Source: https://patents.google.com/patent/CN105164771B/en
Timestamp: 2020-01-22 16:28:32
Document Index: 389591741

Matched Legal Cases: ['art 532', 'art 532', 'art 15', 'art 6', 'art 660', 'art.\n7', 'art.\n23']

CN105164771B - Vehicular charging pad with reduce thickness - Google Patents
Vehicular charging pad with reduce thickness Download PDF
CN105164771B
CN105164771B CN201480024017.9A CN201480024017A CN105164771B CN 105164771 B CN105164771 B CN 105164771B CN 201480024017 A CN201480024017 A CN 201480024017A CN 105164771 B CN105164771 B CN 105164771B
CN201480024017.9A
CN105164771A (en
史蒂文·丹尼尔·尼德豪泽
尼古拉斯·阿索尔·基林
汉斯皮特·威德默
2013-05-01 Priority to US201361818387P priority Critical
2013-05-01 Priority to US61/818,387 priority
2014-01-15 Priority to US14/155,638 priority
2014-01-15 Priority to US14/155,638 priority patent/US9676285B2/en
2014-04-29 Application filed by 高通股份有限公司 filed Critical 高通股份有限公司
2014-04-29 Priority to PCT/US2014/035884 priority patent/WO2014179320A1/en
2015-12-16 Publication of CN105164771A publication Critical patent/CN105164771A/en
2018-05-29 Publication of CN105164771B publication Critical patent/CN105164771B/en
System, method and apparatus the present invention is provided to the charging pad that is used together with wireless power system.In an aspect, the Vehicular charging pad with the thickness reduced is provided.Charging pad can include multiple wire coils and ferrite block backing.By forming the slit of Longitudinal extending in ferrite block, a part for the electric wire extended from the coil may pass through the ferrite slit wiring in the block to reduce the integral thickness of the charging pad.
Vehicular charging pad with reduce thickness
The present invention relate generally to wireless power transmission, and systems with to remote system (for example, comprising The vehicle of battery) wireless power transfer relevant device, system and method, and more particularly to the charging with reduce thickness Pad, such as Vehicular charging pad.
The remote system of such as vehicle is introduced, it includes obtained from the electricity received from the energy storing device of such as battery Moving electric power.For example, hybrid electric vehicle is included using the airborne charger for the electric power braked from vehicle and to vehicle Charge conventional motor.Only electronic vehicle usually receives electricity for charging to battery from other sources.Cell type is electronic Vehicle (electric vehicle) is usually proposed to come via wired alternating current (AC) (for example, domestic or commercial AC electric power) of a certain type It charges.Wired charging connection needs cable or is physically connected to other similar connectors of electric supply.Cable and similar company Connecing device sometimes inconvenient or trouble and can have the shortcomings that other.Electric power can be transferred in free space (for example, via wireless ) some shortcomings of wired charging solution can be overcome to the wireless charging system to electric vehicle charging.Have as a result, It imitates and safely transfers electric power to give the wireless charging system of electric vehicle charging and method.
System, the various embodiments of method and device within the scope of the appended claims each have several sides Face, without being solely responsible for desirable attribute described herein in terms of single one in the aspect.Do not limiting institute In the case of the scope of attached claims, some key characters described herein.
The details of one or more embodiments of the object described in this specification is given in the accompanying drawings and the following description To illustrate.Other feature, aspect and advantage will become apparent from the description, the schema and claims.It should Note that the relative size of following figure may be not drawn on scale.
One aspect of the present invention provides a kind of charging pad, it includes：First coil structure, the first coil structure bag Containing the first coil section wound in a first direction and it is coplanar with the first coil section and with the first direction phase The second coil section wound in anti-second direction；Second loop construction；And ferrite block structure, the ferrite block structure At least one extended comprising the separated two ferrite block sections of slit by Longitudinal extending and from the first coil structure Root electric wire and at least one cored wire extended from second loop construction, extend through the institute in the ferrite block structure State a part for the slit of Longitudinal extending.
The first coil section can surround the winding of the first pole and second coil section can surround the second pole and wind, and The slit of the Longitudinal extending can be substantially parallel to the geometrical line extended between first and second pole.From described One and second the flux of pole can be in the opposite direction.
Second loop construction can surround the first pole and wind, and the slit of the Longitudinal extending can be generally with described the One is extremely intersecting.Second loop construction can interact with perpendicular flux.
The slit of the Longitudinal extending in the ferrite block structure can pass through described the of the first coil structure One and second coil section center, and the center of second loop construction can be passed through.
The ferrite block structure can be positioned on the opposite side with the first coil structure of second loop construction On.The ferrite block structure can be the modularization ferrite block sub-assembly comprising multiple ferrite tiles.The ferrite watt Each of corner of piece can include at least slight inclined-plane.The ferrite tile can include multiple general rectangular ferrites Tile, and multiple ferrite tiles have at least one beveling corner, wherein four in the multiple ferrite tile are through fixed Position is so that described chamfer corner positioning located adjacent one another to form the aperture for extending through the ferrite block sub-assembly.
The pad can also include the bottom plate for supporting the ferrite block structure and the pad cover of the support first coil structure, Wherein described bottom plate is fastened to the pad cover, wherein the first coil structure, second loop construction and the ferrite Block structure is arranged there between.
The first coil structure can include the first electric wire for extending from the first coil section and from second line The second electric wire of section extension is enclosed, and second loop construction can include from second loop construction and extend internally the Three electric wires and external the 4th electric wire extended from second loop construction, wherein at least described first, second, and third electricity Line extends through a part for the slit of the Longitudinal extending in the ferrite block structure.First and second electric wire can Through the center of second loop construction and in described first with the first coil structure of second loop construction With pass through second loop construction on the opposite side of the second coiler part.
The pad can additionally comprise the support plate for supporting second loop construction.The support plate can additionally comprise positioning More than first a groove segments on the inside of second loop construction and the institute for being located in second loop construction It states on outside and cooperates to define with more than described first a groove segments and extend past at least three of second loop construction A groove segment more than the second of electric wiring path, wherein first, second, and third electric wire is maintained at least three electric wire In path.
One aspect of the present invention provides a kind of ferrite block structure in charging pad, the structure include bottom plate, By the first ferrite block section of the backplanes support and by the backplanes support and pass through the slit of Longitudinal extending and described the The second separated ferrite block section of one ferrite block section.
The dimension of first ferrite block section can be equal to the dimension of the second ferrite block section.According to technical solution 18 Structure, wherein the slit of the Longitudinal extending can be aligned with the center line of the Longitudinal extending of bottom plate.According to 18 institute of technical solution The structure stated, wherein the first and second ferrite blocks section can be fixed to the bottom plate by adhesive.
The ferrite block structure can be the modularization ferrite block sub-assembly comprising multiple ferrite tiles.The iron oxygen Each of corner of body tile can include at least slight inclined-plane.The ferrite tile can include multiple general rectangular iron Oxysome tile, and multiple ferrite tiles have at least one beveling corner, wherein four in the multiple ferrite tile The beveling corner positioning located adjacent one another is positioned so as to form the aperture for extending through the ferrite block sub-assembly.
One aspect of the present invention provides a kind of charging pad, and it includes for from the water in the magnetic field intercepted by the charging pad The first device of flat component extraction electric power；For extracting electric power from the vertical component in the magnetic field intercepted by the charging pad Second device；For promoting the device of the coupling between the first and second power extractions device and wireless charging system；And For permitting extending from an at least electric wire for the first power extraction device extension and from the second power extraction device An at least electric wire it is described coupling promote device section between by device.
The first power extraction device can include first coil structure, and it includes the First Lines wound in a first direction Enclose section and the second line that is coplanar with the first coil section and being wound in second direction opposite to the first direction Section is enclosed, wherein the first coil section is wound around the first pole and second coil section is wound around the second pole, and Wherein it is described for permit it is described coupling promote device section between by device be substantially parallel to described first And second the geometrical line extended between pole and extend.Flux from first and second pole can be in the opposite direction.
The second power extraction device can include the second loop construction around the winding of the first pole, and wherein described be used for Permit it is described coupling promote device section between by device generally extremely intersect with described first.Second coil Structure can interact with perpendicular flux.
The first power extraction device can include first coil structure, and it includes the First Lines wound in a first direction Enclose section and the second line that is coplanar with the first coil section and being wound in second direction opposite to the first direction Section is enclosed, the coupling promote device can include ferrite block structure, and the ferrite block structure includes Liang Ge ferrite blocks area Section, it is described for permit it is described coupling promote device section between by device can be included in described two ferrite blocks The slit of Longitudinal extending between section, and the slit of the Longitudinal extending in the ferrite block structure can pass through described first The center of first and second coil section of loop construction, and the center of second loop construction can be passed through.
Fig. 1 is to be used to transmit to the exemplary radio power of electric vehicle charging according to exemplary embodiment of the invention The figure of system.
Fig. 3 is the displaying exemplary core of wireless power transmission system of Fig. 1 and another functional block diagram of accessory part.
Fig. 4 is the replaceable contactless battery being placed in electric vehicle of displaying according to an exemplary embodiment of the invention Functional block diagram.
Fig. 5 A, 5B, 5C and 5D are to be used for induction coil and Ferrite Material phase according to exemplary embodiment of the invention For the figure of the exemplary configuration of the placement of battery.
Fig. 6 A are the decomposition views of vehicle pad cover and DD loop constructions.
Fig. 6 B are the perspective views of the vehicle pad cover and DD coils after the assembling of Fig. 6 A.
Fig. 7 A are the quadrature coils and the decomposition view of support plate shown compared with the vehicle pad cover and DD coils of Fig. 6 B.
Fig. 7 B are the perspective views of the component after the assembling of Fig. 7 A.
Fig. 7 C are the plan view from above of the component after the assembling of Fig. 7 B.
Fig. 8 is the decomposed of the bottom plate of the Vehicular charging pad and modularization ferrite block sub-assembly for supporting on it Perspective view.
Fig. 9 A are the cross sections of the Vehicular charging pad after assembling.
Fig. 9 B are the detailed views of the section B of Fig. 9 A.
Fig. 9 C are the detailed views of the section C of Fig. 9 A.
Figure 10 is the bottom plate of Fig. 8 and the partial exploded perspective view of modularization ferrite block sub-assembly, is schematically described The flux generated by DD loop constructions.
Figure 11 is the bottom plate of Fig. 8 and the partial exploded perspective view of modularization ferrite block sub-assembly, is schematically described The flux generated by quadrature coil.
Figure 12 A are the partial exploded perspective views of another vehicle pad for the single loop construction for including two multiturn rings.
Figure 12 B are the partial exploded perspective views of the vehicle pad for the single loop construction for including single multiturn ring.
Various features illustrated in schema may be not drawn on scale.Therefore, for clarity, arbitrarily it can expand or contract The size of small various features.In addition, some schemas may not describe all components of given system, method or apparatus.Finally, phase It can be used to represent similar features through this specification and each figure like reference number.
The detailed description illustrated below in conjunction with attached drawing is intended to the description as exemplary embodiment, and is not intended to represent The only embodiment that wherein the present invention may be practiced.Refer to " serve as example, example throughout term " exemplary " used in this description Or explanation ", and may not should be interpreted preferably or more favourable than other exemplary embodiments.In order to provide to the exemplary of the present invention The thorough understanding of embodiment, detailed descriptions contain specific details.In some instances, some devices are shown in form of a block diagram.
Electric power is wirelessly transferred to can refer to any type of energy associated with electric field, magnetic field, electromagnetic field or other persons Receiver is transferred to from transmitter, and without using physics electric conductor (for example, electric power can be transferred by free space).It is output to Electric power in wireless field (for example, magnetic field) can be received, captured or coupled to realize that electric power is transferred by " receiving coil ".
For electric vehicle herein to describe remote system, the example of remote system is to include from chargeable energy stores The electric power that device (for example, one or more rechargeable electrochemical cells or other types of battery) obtains is as its locomitivity Part vehicle.As non-limiting examples, some electric vehicles can be also to be included for direct in addition to electro-motor The hybrid electric vehicle for the traditional combustion engine that movement or battery used for vehicles charge.Other electric vehicles can be from power draw All locomitivities.Electric vehicle is not limited to automobile, and can include motorcycle, trolley, motor scooter, and so on. For example it is unrestricted, the remote system in electric vehicle (EV) form is described herein.In addition, it is further anticipated that it can be used chargeable Energy storing device and power at least partly other remote systems (for example, the electronic device such as personal computing device and Its fellow).
Fig. 1 is the exemplary radio for being used to charge to electric vehicle 112 according to the exemplary embodiment of the present invention The figure of power delivery system 100.When electric vehicle 112 stops near pedestal wireless charging system 102a, wireless power transfers System 100 realizes the charging of electric vehicle 112.It illustrates to be used to treat parking in corresponding pedestal wireless charging system in parking area The space of two electric vehicles above system 102a and 102b.In some embodiments, region distributing center 130 may be connected to electricity Advocate to do 132 and be configured to via power link 110 provide and arrive pedestal wireless charging exchange (AC) or direct current (DC) power supply System 102a.Pedestal wireless charging system 102a also includes wirelessly to transfer or receive the fundamental system induction coil of electric power 104a and antenna 136.Electric vehicle 112 can include battery unit 118, electric vehicle induction coil 116, electric vehicle wireless charging Electric system 114 and antenna 140.Electric vehicle induction coil 116 can be produced (for example) via by support system induction coil 104a The region of raw electromagnetic field to interact with support system induction coil 104a.
In some exemplary embodiments, when electric vehicle induction coil 116 is located at by support system induction coil 104a When in generated energy field, electric vehicle induction coil 116 can receive electric power.The field, which corresponds to, to be sensed by electric vehicle Coil 116 is captured by the region of the support system induction coil 104a energy exported.For example, by the support system line of induction The energy of circle 104a outputs can be at being enough electric vehicle 112 is charged or powered (such as, it is sufficient to charge to battery unit 118) Level.In some cases, the field may correspond to " near field " of support system induction coil 104a.Near field may correspond to deposit In the region by the electric current in support system induction coil 104a and the strong reacting field of charge generation, the strong reacting field is not separate Support system induction coil 104a radiates electric power.In some cases, near field may correspond in support system induction coil 104a About 1/2 π wavelength in region (and for electric vehicle induction coil 116, vice versa), such as will further below Description.
Regional distribution center 130 can be configured to communicate and pass through with external source (for example, power grid) via communication back-haul 134 It is communicated by communication link 108 with pedestal wireless charging system 102a.
In some embodiments, electric vehicle induction coil 116 can be aligned with support system induction coil 104a, and therefore It is simply placed in by driver near field region, so as to correctly position electric vehicle compared with support system induction coil 104a 112.In other embodiments, driver's visual feedback, audio feedback or its combination can be given, when to determine electric vehicle 112 It is properly placed and is transferred for wireless power.In other embodiments again, electric vehicle 112 can pass through automated driving system Positioning, the automated driving system electric vehicle 112 can be moved back and forth (for example, in zigzag move) until alignment error Until reaching allowable value.This can in the case where no driver interferes or in the case where only having minimum driver's interference (premise It is electric vehicle 112 equipped with servo steering wheel, ultrasonic sensor and intelligence to adjust vehicle) it is automatic by electric vehicle 112 It ground and independently performs.In still other embodiments, electric vehicle induction coil 116, support system induction coil 104a or its Combination can have that the induction coil 116 is made to be displaced relative to each other and move more accurately to orient them with 104a And the functionality of coupling more efficiently is formed therebetween.
Pedestal wireless charging system 102a can be located in a variety of positions.As non-limiting examples, some suitable position bags The parking area that is contained in the family of 112 owner of electric vehicle, be modeled behind the conventional gas station based on oil it is electronic Automobile wireless charges retained parking area and in the parking lot of the other positions such as such as shopping center and workplace.
Wirelessly numerous benefits can be provided to electric vehicle charging.For example, charging can be automatically carried out, and hardly Intervene with driver and manipulate, thus improve the convenience of user.Exposed electric contact also may not be present and without mechanical wear, borrow This improves the reliability of wireless power transmission system 100.The manipulation to cable and connector is may not be needed, and may not be present can Exposed to moisture and cable, plug or the socket of water in outdoor environment, security is improved whereby.It also may not be present visible or can Close socket, cable and plug reduces the Latent destruction behavior to power charge device whereby.Further, since can will be electronic Vehicle 112 is used as distributed storage devices so that the stabilization of power grids, is directed to so can be used and be docked to power grid solution to increase The vehicle availability that vehicle is operated to power grid (V2G).
Wireless power transmission system 100 as described with reference to Figure 1 may also provide aesthstic and non-obstruction advantage.Citing comes It says, the charging column and cable that can hinder vehicle and/or pedestrian may not be present.
As vehicle being explained further to power grid ability, wireless power transmitting and receiving ability can be configured into it is reciprocal Formula so that pedestal wireless charging system 102a delivers power to electric vehicle 112 and electric vehicle 112 delivers power to bottom Seat wireless charging system 102a (for example, in energy deficiency).This ability can be used for by generating electricity by renewable (for example, wind Or solar energy) in excess demand or deficiency caused by energy deficiency when allow the electric vehicle to be to entire distribution by electricity contribution It unites to stablize power distribution network.
Fig. 2 is the schematic diagram of the exemplary component of the wireless power transmission system 100 of Fig. 1.As shown in Figure 2, radio Power delivery system 200 can include support system radiating circuit 206, and the support system radiating circuit 206, which includes, has inductance L1 Support system induction coil 204.Wireless power transmission system 200 further includes electric vehicle receiving circuit 222, the electricity Motor-car receiving circuit 222, which includes, has inductance L2Electric vehicle induction coil 216.Embodiment described herein can make With capacitance support type line loop (that is, multiturn coil), so as to formed can via magnetic near field or electromagnetic near field by energy from primary Structure (transmitter) is efficiently coupled to secondary structure (receiver) (if both primary structure and secondary structure are tuned to Common resonance frequency) resonance structure.Coil can be used for electric vehicle induction coil 216 and support system induction coil 204.Make It can relate to " magnetic couplings resonance ", " electromagnetic coupling resonance " and/or " resonant inducing " with for coupling the resonance structure of energy. Wireless power transmission system will be described based on being transferred from pedestal wireless power charging system 202 to the electric power of electric vehicle 112 200 operation, but not limited to this.For example, as discussed above, it is wireless can to deliver power to pedestal for electric vehicle 112 Charging system 102a.
With reference to figure 2, electric supply 208 (for example, AC or DC) is by electric power PSDCIt is fed to pedestal wireless power charging system 202 to transfer energy to electric vehicle 112.Pedestal wireless power charging system 202 includes pedestal charging system electrical power conversion Device 236.Pedestal charging system electric power converter 236 can include the circuit of such as the following：AC/DC converters, are configured Electric power is transformed into the DC electric power in appropriate voltage level from standard main line AC；And DC/ low frequencies (LF) converter, warp Configuration is in the electric power for the operating frequency for being suitable for wireless high power transmission DC electric power to be transformed into.Pedestal charging system electric power Converter 236 is by electric power P1It is fed to comprising the capacitor C to connect with support system induction coil 2041Support system transmitting electricity Road 206, to issue incident electromagnetic field in required frequency.Capacitor C can be provided1To be formed in institute with support system induction coil 204 Want the resonance circuit of resonating at frequencies.Support system induction coil 204 receives electric power P1And it is being enough to charge to electric vehicle 112 Or wirelessly transmitting electric power under the level of power supply.For example, the power electricity wirelessly provided by support system induction coil 204 It is flat to may be about thousands of watts (kW) (for example, appointing whichever or higher or lower from 1kW to 110kW).
Support system radiating circuit 206 comprising support system induction coil 204 and include electric vehicle induction coil 216 Electric vehicle receiving circuit 222 can be tuned substantially the same frequency, and can be positioned at by support system induction coil In the near field of the electromagnetic field of one of 204 and electric vehicle induction coil 216 transmitting.In the case, support system senses Coil 204 and electric vehicle induction coil 116 can become coupled to each other so that electric power can be passed to comprising capacitor C2And electricity The electric vehicle receiving circuit 222 of motor-car induction coil 116.Capacitor C can be provided2With with electric vehicle induction coil 216 It is formed in the resonance circuit of resonance under required frequency.Element k (d) represents the mutual coupling factor of the gained under coil separation.Deng Imitate resistance Req,1And Req,2Expression can be induction coil 204 and 216 and anti-reactive capacitance device C1And C2Intrinsic loss.Bag Induction coil containing electric vehicle 216 and capacitor C2Electric vehicle receiving circuit 222 receive electric power P2And by electric power P2It provides The electric vehicle electric power converter 238 of charging system for motor-driven vehicle 214.
Electric vehicle electric power converter 238 can especially include LF/DC converters, the LF/DC converters be configured to by Electrical power conversion in operating frequency, which returns to, to be in and the voltage level of the voltage levels match of electric vehicle battery unit 218 DC electric power.Electric vehicle electric power converter 238 can provide converted electric power PLDCTo charge to electric vehicle battery unit 218.Electricity Power supply 208, pedestal charging system electric power converter 236 and support system induction coil 204 can be static and positioned at a variety of positions Place is put, as discussed above.Battery unit 218, electric vehicle electric power converter 238 and electric vehicle induction coil 216 can wrap It is contained in the charging system for motor-driven vehicle 214 of the part for the part of electric vehicle 112 or battery pack (not shown).Electric vehicle Charging system 214 also can be configured that electric power is wirelessly provided to pedestal radio via electric vehicle induction coil 216 Power charging system 202 by electric power feed-in to return to power grid.In electric vehicle induction coil 216 and support system induction coil 204 Each may act as the transmitting based on the operation mode or induction receiving coil.
Although it is not shown, but wireless power transmission system 200 can include load switching units (LDU) to be passed from wireless power Delivery system 200 safely disconnects electric vehicle battery unit 218 or electric supply 208.For example, in the event of urgent or system In the case of barrier, LDU can be triggered with from 200 disconnecting consumers of wireless power transmission system.LDU can be provided using as to being used to manage It is the part of battery management system to manage to the supplement or LDU of battery to the battery management system to charge.
In addition, charging system for motor-driven vehicle 214 can include on-off circuit (not shown) for by the electric vehicle line of induction Circle 216 is used to selectively connect to electric vehicle electric power converter 238 and selectively disconnects electric vehicle induction coil 216.It is disconnected Opening electric vehicle induction coil 216 can stop to charge and also can adjust such as by pedestal wireless charging system 102a (serving as transmitter) " load " of " seeing " can be used for (serving as and connecing from pedestal wireless charging system 102a " cover " charging system for motor-driven vehicle 214 Receive device).Detection load it can change in the case where transmitter includes load sense.Thus, for example pedestal wireless charging system 202 grade transmitters of uniting can have to determine when the receiver such as charging system for motor-driven vehicle 214 is present in support system Mechanism in the near field of induction coil 204.
As described above, in operation, it is assumed that towards the energy transmission of vehicle or battery, carried from electric supply 208 For input electric power so that support system induction coil 204 generates to provide the field of energy transmission.Electric vehicle induction coil 216 are coupled to radiation field and generate the output power for storing or consuming for electric vehicle 112.As described above, in some realities It applies in example, support system induction coil 204 and electric vehicle induction coil 216 are configured according to mutual resonant relationship so that The resonant frequency of electric vehicle induction coil 216 and the resonant frequency of support system induction coil 204 are closely or generally It is identical.When in the near field for being located at support system induction coil 204 in electric vehicle induction coil 216, pedestal wireless power charges Launch loss between system 202 and charging system for motor-driven vehicle 214 is minimum.
As stated, by the way that the major part of the energy in the near field of transmitting induction coil is coupled to induction receiving coil Rather than the most of of energy is subjected to effective energy transmission with Electromagnetic Wave Propagation to far field.When near field, it can send out It penetrates and coupled mode is established between induction coil and induction receiving coil.Can wherein occur this near-field coupling around induction coil Region be referred to herein as near-field coupling Mode Areas.
Although it is not shown, but both pedestal charging system electric power converter 236 and electric vehicle electric power converter 238 can wrap Containing oscillator, the drive circuit such as power amplifier, wave filter and for wireless power induction coil efficient coupling Match circuit.The oscillator can be configured to generate required frequency, may be in response to adjustment signal and adjusts the frequency.It can lead to Overpower amplifier is in response to the amplification quantity of control signal amplification oscillator signal.Filtering and match circuit can be included to filter out Harmonic wave or other undesired frequencies, and make power switching module is impedance-matched to wireless power induction coil.Electrical power conversion Device 236 and 238 can also include rectifier and switching circuit and be charged with generating suitable electric power output to battery.
As through revealed embodiment and described in electric vehicle induction coil 216 and support system induction coil 204 " annular " antenna is can be referred to or be configured as, and is more particularly multiturn loop aerial.Induction coil 204 and 216 may be used also Herein referred to as or it is configured as " magnetism " antenna.Term " coil " is set to be referred to wirelessly to export or receive to be used for coupling Close the component of the energy of another " coil ".Coil is also known as being configured to wirelessly exporting or receiving the type of electric power " antenna ".As used herein, coil 204 and 216 be configured to wirelessly to export, wirelessly receive and/or wirelessly in After " the electric power transmitting assembly " of the type of electric power.Annular (for example, multiturn is annular) antenna may be configured to include air-core or object Manage core, such as ferrite core.In addition, air-core loop aerial allows other components being placed in core region.Comprising ferromagnetic The physics core antenna of body or ferrimagnet allows to form stronger electromagnetic field and improved coupling.
As discussed above, the matching between transmitter and receiver or almost during matched resonance transmitter occurs Effective transmission of energy between receiver.However, when the resonance even between transmitter and receiver mismatches, also may be used Energy is transferred under more inefficient.Have by the energy coupling in the near field of spontaneous emission in future induction coil to foundation is resided therein The reception sense of (for example, in the scheduled frequency range of resonant frequency or in preset distance of near field region) in the area in this near field It answers coil rather than travels in free space to carry out the transmission of energy from transmitting induction coil by energy.
Resonant frequency can be based on the inductance of the radiating circuit comprising induction coil (for example, support system induction coil 204) And capacitance, as described above.As shown in Figure 2, inductance can be generally the inductance of induction coil, and can add capacitance to sense Coil is answered to generate resonance structure under desired resonant frequency.It as non-limiting examples, as shown in FIG. 2, can be with sense Answer coil in series add capacitor with formed generate electromagnetic field resonance circuit (for example, support system radiating circuit 206).Cause This, for larger diameter induction coil, for induce the capacitance of resonance value can with the diameter or inductance of coil increase and Reduce.Inductance may also depend upon the number of turn of induction coil.In addition, increase with the diameter of induction coil, the effective energy near field Transmission area can increase.Other resonance circuits are possible.As another non-limiting example, capacitor can be positioned in parallel (for example, antiresonant circuit) between two terminals of induction coil.In addition, induction coil can be designed to high quality (Q) factor is to improve the resonance of induction coil.For example, Q factor can be 300 or bigger.
As described above, according to some embodiments, disclose two senses electric power being coupled in mutual near field It answers between coil.As described above, near field may correspond to the area around induction coil there are electromagnetic field, but can not be separate Induction coil is propagated or radiation.Near-field coupling Mode Areas may correspond to the volume near the physical size of induction coil, usually In the small fraction of wavelength.According to some embodiments, by electromagnetic induction coil (for example, single turn cycle antenna and multiturn cycle day Line) for emitting and receiving the two, this is because the electric near field phase with electric type antenna (for example, small dipole) in an actual embodiment Than, magnetic-type coil magnetic near field amplitude be intended to it is higher.This allows the potential higher coupling between antenna.It in addition, can Use " electricity " antenna (for example, dipole and monopole) or the magnetic combination with electric antenna.
Fig. 3 is the displaying exemplary core component of wireless power transmission system 100 of Fig. 1 and another function of accessory part Block diagram.Wireless power transmission system 300 illustrates for the logical of support system induction coil 304 and electric vehicle induction coil 316 Believe link 376, guiding link 366 and to Barebone 352,354.As described by above referring to Fig. 2 and assume energy towards electronic Vehicle 112 flows, and in figure 3, pedestal charging system electricity interface 360 can be configured to supply electric power from such as AC or DC electric power 126 grade power supplys of device is answered to provide to charging system electric power converter 336.Pedestal charging system electric power converter 336 can be filled from pedestal Electric system electricity interface 360 receives AC or DC electric power to be excited at or near the resonant frequency of support system induction coil 304 Support system induction coil 304.Electric vehicle induction coil 316 can be from the near-field coupling when in near-field coupling Mode Areas Mode Areas receives energy at the resonant frequency fx or to oscillate around.Electric vehicle electric power converter 338 will come from electric vehicle sense The oscillator signal of coil 316 is answered to be transformed into the electric power signal for being suitable for charging to battery via electric vehicle electricity interface.
Pedestal wireless charging system 302 includes pedestal charging system controller 342 and charging system for motor-driven vehicle 314 includes Electric vehicle controller 344.Pedestal charging system controller 342 can cover other systems (not shown) (for example, computer, Wireless device and distribution center or intelligent grid) pedestal charging system communication interface.Electric vehicle controller 344 can cover Other systems (not shown) are (for example, other electronics in airborne computer, other battery charge controllers, vehicle on vehicle System and remote electronic system) electric vehicle communication interface.
Pedestal charging system controller 342 and electric vehicle controller 344, which can include, to be used for independent communication channel The subsystem or module of specific application.These communication channels can be individual physical channel or individual logic channel.As non- Limitative examples, pedestal charging can communicate to Barebone 352 via communication link 356 with electric vehicle to Barebone 354 with It provides that support system induction coil 304 and the electric vehicle line of induction independently or in the case where operator aids in is more closely aligned The feedback mechanism of circle 316.Similarly, pedestal charging guidance system 362 can be guided via guiding link 366 with electric vehicle is 364 communication of system is to provide feedback mechanism, in the mistake of alignment fundamental system induction coil 304 and electric vehicle induction coil 316 Operator is guided in journey.In addition, the list supported by pedestal charging communication system 372 and electric vehicle communication system 374 may be present Only general communications link (for example, channel) (for example, communication link 376), for pedestal wireless power charging system 302 with Other information is conveyed between charging system for motor-driven vehicle 314.This information can be included on electric vehicle characteristic, battery behavior, filled The information of electricity condition and pedestal wireless power charging system 302 and the power capability of both charging system for motor-driven vehicle 314 and The repair of electric vehicle 112 and diagnostic data.These communication links or channel can be independent physical communication channels (for example, bluetooth, Zigbee, honeycomb fashion etc.).
Electric vehicle controller 344 can also include：Manage the battery management system of the charging and discharging of electric vehicle main battery System (BMS) (not shown), the parking assistance system based on microwave or ultrasonic radar principle；Braking system is configured to hold The semi-automatic shut-down operation of row；And steering wheel servo-drive system, the larger journey of higher parking accuracy can be provided by being configured to auxiliary The parking " stopping by line " of automation is spent, therefore is reduced to pedestal wireless power charging system 102a and charging system for motor-driven vehicle The demand of the horizontal induction coil alignment of machinery in any one of 114.In addition, electric vehicle controller 344 can be configured with It communicates with the electronic device of electric vehicle 112.For example, electric vehicle controller 344 can be configured to lead to the following Letter：Visual output devices (for example, instrument panel display), acoustics/audio output device (for example, buzzer, loud speaker), machinery Input equipment (for example, keyboard, touch screen and indicator device such as control stick, trace ball) and audio input device (example Such as, there is the microphone of electronic speech identification).
In addition, wireless power transmission system 300 can include detection and sensing system.For example, wireless power transfers System 300 can include to be used together properly to direct into driver or vehicle into the sensor of charge point with system, with institute Separation/the coupling needed is to be aligned with each other the sensor of induction coil, detection can hinder electric vehicle induction coil 316 to be moved to spy Fixed height and/or position with the sensor of realizing the object of coupling and for system be used together to perform system it is reliable, The safety sensor of harmless and safe operation.For example, safety sensor can include the sensor for following purposes： Detect close to wireless power induction coil 104a, 116 be more than radius of safety animal or children presence, detection can heating (sense Should heat) the metal object near support system induction coil 304, detection hazard event (for example, the support system line of induction Incandescent object on circle 304) and to pedestal wireless power charging system 302 and 314 component of charging system for motor-driven vehicle into Trip temperature monitors.
Wireless power transmission system 300 can also support the plug-in type charging via wired connection.Wired charging port can be It delivers power to electric vehicle 112 or integrates the output of two different chargers before transferring electric power from electric vehicle 112. On-off circuit can provide the functionality for supporting wireless charging and the two that charges via wired charging port on demand.
To communicate between pedestal wireless charging system 302 and charging system for motor-driven vehicle 314, wireless power transfers System 300 can be used frequency in-band signaling and RF data modem units (for example, in unauthorized frequency band via radio Ethernet) both.Frequency out-of-band communication can provide enough bandwidth for value-added service is distributed to vehicle user/owner. The low depth amplitude or phase-modulation of wireless power carrier wave may act as having signaling system in the frequency band of least interference.
In addition, a certain communication can be performed via wireless power link in the case of without using specific communications antenna.It lifts For example, wireless power induction coil 304 and 316 also can be configured to serve as radio communications transmitter.Therefore, pedestal radio Some embodiments of power charging system 302 can include to enable the controller of keying type protocol on wireless power path (not shown).Keying transmitted power level (amplitude shift keying) is come with predefined interval by using predefined agreement, is received Device can detect the serial communication from transmitter.Pedestal charging system electric power converter 336 (can not scheme comprising load sense Show) for detect in the effect as caused by support system induction coil 304 near near field electric vehicle receiver Existence or non-existence.For example, load sense monitoring flows to the electric current of power amplifier, by by support system sense Answering the existence or non-existence of receiver in the effect caused by coil 104a near near field influences.To negative on power amplifier The detection of the change of load can by pedestal charging system controller 342 come monitor for determine whether to enable oscillator for Emitted energy, whether will in effect receiver communication or its combine in use.
In order to realize that wireless high power transfers, some embodiments can be configured in the range of from 10kHz to 60kHz Electric power is transferred under frequency.The permissible efficient electrical power conversion that solid-state device can be used and realize of this low frequency coupling.In addition, with it is other Frequency band is compared, and the less coexistence problems with radio system may be present.
Described wireless power transmission system 100 can be with including a variety of electric vehicles of rechargeable or replaceable battery 102 are used together.Fig. 4 is the replaceable nothing being placed in electric vehicle 412 of displaying according to an exemplary embodiment of the invention Contact the functional block diagram of battery.In this embodiment, low battery location for integrated wireless electric power interface (for example, charger arrives The cordless interface 426 of battery) and can be from the charger being embedded in the ground electric vehicle battery list (not shown) for receiving electric power Can be useful for member.In Fig. 4, electric vehicle battery unit can be rechargeable battery cells, and can be contained in battery In compartment 424.Electric vehicle battery unit also provides wireless power interface 426, and the wireless power interface 426 can collect on demand (resonant inducing coil, power conversion circuit and other controls and communication work(are included into entire electric vehicle wireless power subsystem Can) for carrying out effective and safe wireless energy between the wireless charging unit based on ground and electric vehicle battery unit Amount is transferred.
Make electric vehicle induction coil be integrated into flushed with the bottom side of electric vehicle battery unit or automobile body so that It to the gap of automobile body can be useful that protrusion and causing, which must be not present, and can maintain specified ground.This configuration can need Some spaces in electric vehicle battery unit is wanted to be exclusively used in electric vehicle wireless power subsystem.Electric vehicle battery unit 422 can also include battery to the cordless interface 422 and charger of EV to the cordless interface 426 of battery, provide electric vehicle Contactless electric power and communication between 412 and pedestal wireless charging system 102a as Figure 1 shows.
It can locate in some embodiments and referring to Fig. 1, support system induction coil 104a and electric vehicle induction coil 116 In fixed position, and the induction coil by electric vehicle induction coil 116 compared with pedestal wireless charging system 102a's Entirety is placed and is brought into near-field coupling area.However, in order to it is quick, efficiently and safely perform energy transmission, it may be desired to subtract The distance between handle base system induction coil 104a and electric vehicle induction coil 116 are coupled with improving.Therefore, in some realities It applying in example, support system induction coil 104a and/or electric vehicle induction coil 116 can be that can dispose and/or movably, with Them is made preferably to be aligned.
Fig. 5 A, 5B, 5C and 5D are to be used for induction coil and Ferrite Material phase according to exemplary embodiment of the invention For the figure of the exemplary configuration of the placement of battery.Fig. 5 A show the complete embedded induction coil 536a of ferrite.It is described wireless Eletric power induction coil can include the Ferrite Material 538a and coil 536a around Ferrite Material 538a windings.Coil 536a is certainly Body can be made of twisted litz wire.Electrically conductive shield 532a can be provided so that the passenger of vehicle to be protected to emit shadow from excessive EMF It rings.Conductive shield can be particularly useful in the vehicle made of plastics or composite material.
Fig. 5 B shows most preferably set to enhance coupling and reduce the warp of the vortex flow (heat dissipation) in electrically conductive shield 532b The ferrite-plate (that is, ferrite backing) being sized.Ferrite Material 538b can be provided especially for intensifier coil 536b and nothing The device of coupling between micro USB electric system.Specifically, Ferrite Material 538b can provide for promoting coil 536b and bottom The dress of coupling between base system induction coil (such as support system induction coil 104a (referring to Fig. 1) of wireless charging system) It puts.Coil 536b can be completely embedded in non-conductive non magnetic (for example, plastics) material.For example, such as institute in Fig. 5 A to 5D Illustrate, coil 536b can be embedded in protectiveness shell 534b.Due to magnetism between coil 536b and Ferrite Material 538b Coupling with the choice between ferrite magnetic hystersis loss and there may be separate.
Fig. 5 C illustrate that its coil 536c (for example, copper litz wire multiturn coil) can be moved on lateral (" X ") direction Another embodiment.Fig. 5 D illustrate another embodiment that wherein induction coil module is disposed in a downward direction.At some In embodiment, battery unit, which includes, can dispose and can not dispose one of electric vehicle induction coil module 540d as wireless The part of electricity interface.Magnetic field penetration into battery space 530d and is penetrated into the inside of vehicle in order to prevent, empty in battery Between conductive layer shielding case 532d (for example, copper foil) may be present between 530d and vehicle.In addition, non-conductive (for example, plastics) are protected Sheath 534d can be used to protection electrically conductive shield 532d, coil 536d and Ferrite Material 538d exempt from it is affected by environment (for example, machine Tool damage, oxidation etc.).In addition, coil 536d can be moved on lateral X and/or Y-direction.Fig. 5 D explanations wherein electric vehicle The embodiment that induction coil module 540d is disposed compared with cell body in downward Z-direction.
This can dispose electric vehicle induction coil mould of the design similar to Fig. 5 B of electric vehicle induction coil module 542b The design of block, in addition to conductive shield is not present at electric vehicle induction coil module 542d.Conductive shielding part 532d with Cell body is treated together.When electric vehicle induction coil module 542d is not in deployed state, protective layer 534d (for example, plastic layer) is provided between conductive shielding part 532d and electric vehicle induction coil module 542d.Electric vehicle The physical separation of induction coil module 542d and cell body can have actively impact to the performance of induction coil.
As discussed above, deployed electric vehicle induction coil module 542d can contain only coil 536d (for example, profit Hereby line) and Ferrite Material 538d.Ferrite backing can be provided to enhance coupling and prevent in the bottom of vehicle or conductive shield Cover the excess eddy current losses in 532d.In addition, electric vehicle induction coil module 542d can be included to conversion electron device Part and the flexible wire connection of sensor electronics power supply.This wirning harness can be integrated into mechanical gear to dispose electronic Vehicle induction coil module 542d.
Referring to Fig. 1, charging system as described above can be used in a variety of positions for charging to electric vehicle 112 or Electric power is communicated back to power grid.For example, the transmission of electric power can occur in the environment of parking lot.It should be noted that " parking area " It is also referred to as herein " parking space ".In order to improve the efficiency of automobile wireless electric power transmission system 100, electric vehicle 112 can along the X direction and Y-direction be aligned so that electric vehicle induction coil 116 in electric vehicle 112 can with it is associated Pedestal wireless charging system 102a in parking area is fully aligned.
In addition, revealed embodiment is suitable for the parking lot with one or more parking spaces or parking area, wherein At least one parking space in parking lot may include pedestal wireless charging system 102a.Guidance system is (not shown) available for auxiliary Help vehicle operators that electric vehicle 112 is located in parking area, by the electric vehicle induction coil in electric vehicle 112 116 are aligned with pedestal wireless charging system 102a.Guidance system can include and position electric car for auxiliary electric vehicle operator 112 so that induction coil 116 in electric vehicle 112 can in charging station (for example, pedestal wireless charging system 102a) The method based on electronics that is fully aligned of charging induction coil (for example, radio-positioning, direction finding principle and/or optics sense Survey method, quasi-optics method for sensing and/or ultrasonic wave method for sensing) or based on machinery method (for example, wheel of vehicle guiding, Tracking stops), or any combination thereof.
As discussed above, charging system for motor-driven vehicle 114 can be positioned on the bottom side of electric vehicle 112 for the bottom of from Seat wireless charging system 102a transmitting electric powers and reception electric power.For example, electric vehicle induction coil 116 can be integrated into preferably Close in the vehicle bottom of center, so as to provide the maximum safe distance in terms of EM exposures and permit electric vehicle just To and reversely park.
In electric vehicle IPT systems 300, in longitudinal direction (that is, compared with 112 forward/backward of vehicle) direction and in transverse direction Tolerance limit on (that is, edge to edge) direction is desirable.In different situations, have to the misalignment in longitudinal or transverse direction A greater degree of tolerance limit can be beneficial.Therefore, electric vehicle IPT systems 300 have flexibility with suitable specific in tolerance limit The requirement of situation is desirable.
According to an embodiment, IPT systems can include the basic coil arrangement being conventionally positioned on ground, the basis coil Arrangement includes two individual coplanar coils being located in above the core formed by high-permeability material (such as ferrite).This Outside, the conductive backings that shielding case and additional flow reshaper are served as below magnetic core may be present.In this arrangement, there is no pass through Through the straight path of the core of coil.As a result, if be especially driven using the electric current on opposite meaning, then be referred to as ' this coil arrangement of double D ' arrangements generates two different pole regions and between them in " flux tube " above coil The magnetic flux camber line of form, high-throughput concentration degree region are referred to as the functional space of IPT systems.With being referred to as the flat of ' circle ' pad Magnetic moment (it is generallyperpendicular) caused by the single loop construction in face is on the contrary, the magnetic moment that thus structure generates is substantial water Flat.
According to various embodiments described herein, three or more coils or ring can also be used for receiver (pickup) dress Put or the coil of base device arrangement in.Acceptor device is also referred to as vehicle pad herein.Three or more described lines First two coils or ring of circle or ring can be the independent coplanar ring of single loop construction, thus shape in being arranged with pedestal coil Into ' double D '.During energy transmission, this ' double D ' in transmitter (pedestal) device ' double D ' are aligned.Herein referred to as The tertiary coil of ' orthogonal ' coil is located on the same side of magnetic conductance core ' above double D '.Except through ' the water of double D ' extractions Outside the amount of dividing equally, ' orthogonal ' coil also allows to extract electric power from the vertical component in the magnetic field intercepted by acceptor device.For electricity Magnet coil structure, ' double D ' have on the direction of their magnetic moment to not right between transmitter and acceptor device Accurate tolerance limit, but with the relatively small tolerances to misalignment on the direction parallel to their magnetic moment.By ' double D ' in vehicle pad (DD) and the three-winding of ' orthogonal ' (Q) construction arrangement can provide the tolerance limit of IPT systems in a parallel direction, therefore increase system pair The total tolerance of misalignment in any direction.However, in other embodiments, coil arrangement can only include single loop construction, Following article is discussed in more detail.Therefore, DD coils can provide for from the magnetic field intercepted by reception device (such as charging pad) Horizontal component extracts the device of electric power, and the vertical component that quadrature coil can provide for from the magnetic field intercepted by reception device carries Take the device of electric power.
The one side of embodiment described herein is directed to improve realizes low hair when performing the charging of electric vehicle Jetting is put down (for example, less than ICNIRP'98 reference levels or radio frequency interference level, for example, less than by European standard EN 300330 Or the EMF exposure levels of limitation that define of FCC part 15) ability loop construction.For example, some embodiments can realize low hair Jetting put down in addition vehicle bottom be metal and/or comprising metallic shield in the case of and/or ground structure include it is good In the case of good conductive material (such as iron bar in armored concrete ground) also so.
Horizontal plane conductive structure above vehicle pad and below base mat generally can not substantially inhibit be located in people The magnetic field at a certain position in normal use situation.In comparison, if with being grasped in the case of there is no this conductive structure The system of work is compared, they may act as increasing the magnetic flux path of the magnetic density at these positions.
With ' circle ' single coil pad on the contrary, the magnetic texure of the pad or other conductive surfaces (such as vehicle can be surround Steel bottom or any other additional bottom shield or conductive earthing structure) conductive backings and its any extension can be helpless to inhibit Emission level at key position (in addition in vehicle interior (passenger accommodation)).This can be related to magnetic field boundaries condition.Vertically In good conductive surface magnetic field component there is substantially no.The vortex flow that they are induced offsets (Lenz's law).
Fig. 6 A are the decomposition views of vehicle pad cover and DD loop constructions.The shape of vehicle pad cover 610 be general rectangular and Substantially planar.In illustrated embodiment, the size of vehicle pad cover 610 is herein referred to as the direction of " longitudinal direction " Or it is maximum on front to back direction, it is herein referred to as smaller on the direction in " transverse direction " or edge to edge direction, and quilt herein It is referred to as much smaller on the direction of " transverse direction " or the direction of top to bottm.Describe in Fig. 6 A and made on Fig. 6 A and associated figure Longitudinally, laterally and lateral shaft and/or direction are for describing charging pad and its component.The use of these terms is not intended to imply that Any specific mounting arrangements of other devices of the charging pad attached by compared with vehicle or charging pad.Although in some embodiments Middle charging pad can be mounted on vehicle so that behind the longitudinal axis of charging pad extends to before vehicle, but also can be used Other mounting arrangements.
General rectangular recess is formed at the lip that in the one side of the vehicle pad cover 610 and periphery by surrounding vehicle pad cover extends Edge 618 surrounds.Multiple concentric grooves 612 are formed in the round rectangle recess 613 in the concave pedestal and shape and ruler The very little coil for being set to receive DD loop constructions 620.Groove 612 in illustrated embodiment is passed through comprising shape and size It sets and the section of two neighbouring groups of the concentric fillet rectangle of DD loop constructions 620 is maintained with desired shape.
The part of groove 612 is together with the groove 619 of described two groups and Longitudinal extending of connection concentric fillet rectangle Transition groove 617 passes through the raised rectangular configuration 615 in concave center together, and the groove of the Longitudinal extending is generallyperpendicular Several grooves in groove 612 and transition groove 617.Although raised section 615 is depicted and described as substantially herein Upper rectangle, but other shapes and/or size can also be used.Vehicle pad cover 610 also includes and extends through the shorter of vehicle pad cover 610 At least one aperture 614 of side wall.Four legs 616 wherein form the surface of groove 612 to extending out from vehicle pad cover 610 Exhibition, two legs 616 are internal in each of two rings of groove 612.
DD loop constructions 620 are formed by single-wire, and the single-wire is shaped with the first multiturn ring of formation or coil 622 and the second multiturn ring coplanar with first coil 622 or coil 624.In some embodiments, the electric wire is single line profit Hereby line.In illustrated embodiment, first coil 622 is located in the near-end of the end 626 of electric wire, and first coil 622 It is wound from inside to outside around the first pole 602, and the second coil 624 is located in the distal end of wire terminations 626, and the second coil 624 wind from outside to inside around the second pole 604.Because first coil 622 twines on the direction opposite with the second coil 626 Around as discussed above, different in order to generate two between them so two coils can be driven in an inverse sense Pole regions and magnetic lines of flux, and the flux from 622 and second coil 624 of first coil will in the opposite direction
Fig. 6 B are the perspective views of the vehicle pad cover and DD coils after the assembling of Fig. 6 A.Form the electric wire of DD loop constructions 620 End 626 be located on the side opposite with the groove 612 in vehicle pad cover 610 of first and second coil 622,624, And pass through the aperture 614 in vehicle pad cover 610.The one end 626 for forming the electric wire of DD loop constructions 620 is formed through in cover 610 Raised rectangular section 615 in Longitudinal extending groove 619 (referring to Fig. 6 A), wherein the end 626 is connected to coil 624 Inner loop.It is connected to the transition zone 623 of the end 626 of the inner loop of coil 624 in the electric wire that forms DD loop constructions 620 By the way that the transition groove 617 in the raised rectangular section 615 for partially passing through cover 610 is (referring to figure above or below a part 6A) and by the outer shroud of coil 622 it is connected to the outer shroud of coil 624.
Fig. 7 A are the quadrature coils and the decomposition view of support plate shown compared with the vehicle pad cover and DD coils of Fig. 6 B. Orthogonal support plate 630 includes the central aperture 632 that size is set to receive the raised rectangular section 615 of cover board 610.Orthogonal branch Fagging 630 also include from central aperture 632 outwards positioning and size be set to receive cover board 610 leg 616 four holes Mouth 634.Orthogonal support plate 630 supports circular by the pole 606 for surrounding the central aperture 632 for extending through orthogonal support plate 630 The quadrature coil 640 that two parallel wires are formed.Quadrature coil 640 by with the perpendicular flux phase interaction that is flowed along pole 606 With.
Quadrature coil 640 include first end 642a and second end 642b, in the first end, parallel wires from The outer rim extension of quadrature coil 640, in the second end, parallel wires extends and leads to from the inward flange of quadrature coil 640 Cross the ring of the quadrature coil 640 on the side opposite with orthogonal support plate 630 of quadrature coil 640.Orthogonal support plate 630 also includes Groove segment 636, the groove segment, which is located on the both sides of a section of the ring of quadrature coil 640 and defines, passes through cross line Four electric wiring paths of the ring of circle 640.Electric wire in the second end 642b of quadrature coil 640 is placed in by groove segment 636 In the two in four electric wiring paths defined.
Fig. 7 B are the perspective views of the component after the assembling of Fig. 7 A.Specifically, it can be seen that the leg of vehicle pad cover 610 616, which have already passed through corresponding aperture 634, is inserted into orthogonal support plate 630 so that DD loop constructions 620 are located in vehicle pad cover Between 610 and orthogonal support plate 630.The end 626 of DD loop constructions 620 has already passed through the medium pore in orthogonal support plate 630 Mouth 632 and other two electric wiring path for being placed in the formation of the groove segment 636 on the both sides by the ring of quadrature coil 640 It is interior.Therefore the wire terminations 626 of DD loop constructions 620 and the second end 642b of quadrature coil 640 are placed in by groove segment Extend in one of 636 three electric wiring paths defined and on the ring of quadrature coil 640 with being substantially parallel to each other.Just The outside of the ring of intersection circle 640, the first end 642a of quadrature coil 640 is parallel to the wire terminations 626 of DD loop constructions 620 And quadrature coil 640 second end 640b and extend through the aperture 614 in vehicle pad cover 610.
Fig. 7 C are the plan view from above of the component after the assembling of Fig. 7 B.The first coil 622 and second of DD loop constructions 620 Transition zone 623 between coil 624 can be seen by the aperture 632 in orthogonal support plate 630.It can also be seen that DD coil knots Structure include from the first slope section 621 in the aperture 632 that first coil 622 extends and is upward through in orthogonal support plate 630 and The the second slope section 625 extended from the second coil 624 (it also passes upwardly through the aperture 632 in orthogonal support plate 630).It is described Slope section is connected with the wire terminations 626 being placed in the groove section 636 by the coil of quadrature coil 640.
Fig. 8 is the decomposed of the bottom plate of the Vehicular charging pad and modularization ferrite block sub-assembly for supporting on it Perspective view.Bottom plate 650 is general rectangular planar structure, and it includes the two of the extension of each of shorter side from rectangular configuration The protruding portion 652 of a Longitudinal extending.The periphery that bottom plate 650 is included in bottom plate 650 arranges multiple peripheries in a rectangular shape Aperture 654 and four inner openings 656 in the inner area of bottom plate 650.The rectangular arrangement in peripheral aperture 654 corresponds to vehicle The shape of the antelabium 618 of pad cover 610, and available for vehicle pad cover 610 is fastened to bottom plate 650.Similarly, four internal holes The position for the leg 616 that mouthfuls 656 position corresponds in vehicle pad cover 610 and it can also be used to vehicle pad cover 610 being fastened to bottom Plate 650.Any suitable fastener or other components can be used in combination to provide use with peripheral aperture 654 or inner openings 656 In the device that vehicle pad cover 610 is fastened to bottom plate 650, including but not limited to screw, screw rod, rivet, pliers, nail and hasp Component and welding or the similar approach that two kinds of materials are bonded together.It in some embodiments, can be advance without aperture It is formed in bottom plate 650.
The mounting hole 658 being formed about in the corner of the protruding portion 652 of the Longitudinal extending of bottom plate 650 can be combined on for example Charging pad after assembling is fastened any other suitable component in place by the fastener for the fastener that text is discussed And it uses.In the embodiment for serving as Vehicular charging pad in wherein charging pad, charging pad can be fastened to chassis or the frame of vehicle Vehicular charging pad is located in under-vehicle, as discussed above.
Modularization ferrite block sub-assembly 660 comprising multiple ferrite tiles 670 and 672 is fastened to bottom using adhesive The surface of plate.In illustrated embodiment, it is set to using size substantial with overlying ferrite tile 670 or 672 Identical size and multiple adhesive pads 666 of shape, but in other embodiments, monolithic adhesive or institute is alternatively used The area of application of adhesive.In illustrated embodiment, adhesive can be adhesive tape.
In illustrated embodiment, ferrite tile 670 and 672 is 5mm thickness, is 75mm at their most long It is long, and be arranged in the case of 35mm wide and full-size Longitudinal extending at them at their most long, such as institute Show.Ferrite tile 670 and 672 is arranged in individual 7 tile of as shown two and multiplies in 4 tile arrays to be formed by therebetween Longitudinal extending slit 664 separated two ferrite block sections 662a and 662b.The slit 664 and bottom plate of Longitudinal extending The center line alignment of 650 Longitudinal extending.
Discribed ferrite block section 662a and 662b, which are provided, has the substantially length of 525mm or longitudinal size, substantially The substantial continuous ferrite section of the width or lateral dimensions of 140mm and the substantially thickness of 5mm or lateral dimension.Although Specific dimensions are provided for illustrated embodiment, but Yi Shang tile number and tile dimensions are only exemplary, and can make Desired global shape and the modularization iron oxygen of size are formed with the ferrite tile of any an appropriate number of any desired size Body block sub-assembly 660.For example, in some embodiments, the length of the section of the substantial abutment of ferrite block can be In the range of 100mm to 3m, width can be in the range of 50mm to 3m, and thickness can be in the range of 1mm to 50mm.Iron The appropriate size of the arrangement of the substantial abutment of oxysome block can be changed based on the use of charging pad.For vehicle application, charge Size of the comparable size of pad for the charging pad of electronic device is much bigger.It for example, can be based on charging pad will be installed on it The size of vehicle determines the width and/or length of charging pad.In some embodiments, for example, the width of charging pad can be equal to Or any size of the width less than vehicle, and the length of charging pad can be equal to or less than the vehicle being located in before charging pad Any size of the distance between tire and the tire that is located in behind charging pad.Charging pad also can be used compared with vehicle assembly Other sizes and/or configuration to determine for the appropriate size of Vehicular charging pad.
Modularization ferrite block sub-assembly 660 includes at least two ferrite tiles of different shapes, herein quilt Referred to as ferrite tile 670 and ferrite tile 672.Specifically, modularization ferrite block sub-assembly 660 includes 40 essence Upper rectangle ferrite tile 670 and 16 beveling ferrite tiles 672,16 beveling ferrites tile include beveling iron oxygen 16mm corners inclined-plane 674 at one corner of body tile 672.Beveling iron is arranged by the inner openings 656 for surrounding bottom plate 650 Oxysome block 672 and the near-end that each inclined-plane 674 is located in inner openings 656 is oriented, inclined-plane 674 cooperates to form ferrite block Aperture 668 in section 662a and 662b.These inner openings 676 allow tight inside modularization ferrite block sub-assembly 660 Gu so as to increase the hardness of the Vehicular charging pad after assembling.
In illustrated embodiment, the corner and beveling ferrite block 672 of substantial rectangular ferrite block 670 are not Three corners comprising inclined-plane 674 can also include slight inclined-plane to promote the relatively closely assembling of ferrite block structure.Indivedual iron The air gap between oxysome tile 670 and 672 can significantly affect the electricity of the ferrite backing coil in the charging pad after assembling Sense and Q factor.It, can by being at least slightly slanted substantial rectangular ferrite block 670 and chamferring all corners of ferrite block 672 It better adapts to the small size generated by manufacture tolerance limit to change, so as to fulfill from ferrite tile 670 and 672 pairs of ferrite agllutinations Structure is assembled almost without gap.In the case of there is no these small inclined-planes, the even slight change in size will cause corner Conflict, can cause the air gap between tile.Magnetic simulation has shown that slight inclined-plane has to ferrite backing coil Performance does not significantly affect.
Liang Ge groups by the ferrite tile 670 and 672 for providing close packing, ferrite block sub-assembly 660 can wrap Ferrite block section 662a and 662b containing two substantial abutments.No matter the aperture between indivedual ferrite tiles 670 and 672 668 and the presence on small―gap suture or inclined-plane, when being used in combination with loop construction described herein, the ferrite of substantial abutment The magnetic property of block section 662a and 662b are by the magnetic property of the substantial solid ferrite section through similar setting with a pair of of size It is identical.
Fig. 9 A are the cross sections of the Vehicular charging pad after assembling.Fig. 9 B are the detailed views of the section B of Fig. 9 A, and Fig. 9 C are The detailed view of the section C of Fig. 9 A.By the way that bottom plate 650 is fastened to vehicle pad cover 610, fastening module ferrite block group Component 660, quadrature coil 640, orthogonal support plate 630 and DD loop constructions 620 therebetween and the Vehicular charging pad of assembling figure 9A 600.As can be seen that in Fig. 9 B, also insulating layer can be provided between modularization ferrite block sub-assembly 660 and quadrature coil 640 682.Mounting structure 686 is engaged on the mounting hole 658 that the corner of the protruding portion 652 of the Longitudinal extending of bottom plate 650 is formed about (referring to Fig. 8) and allow Vehicular charging pad 600 being fastened to overlying vehicle (not shown).Ferrite is surrounded with wherein wire coil The solenoid structure of core winding is compared, and coil is generally placed in the single side of ferrite block sub-assembly 660, wherein the electricity Slit of the fraction of line through ferrite block sub-assembly 660, coil and ferrite structure in Vehicular charging pad 600 Non-threaded pipe arrangement in.
Because the wire terminations 626 of first end 642b and the DD loop construction 620 of quadrature coil 640 pass through just at them It is substantially parallel to each other during ring (referring to Fig. 7 B) of intersection circle 640 and extends along the center line of vehicle pad 610, so these courts The electric wire section of upper extension can be aligned with the slit 664 of the Longitudinal extending between ferrite block section 662a and 662b (referring to figure 8).It can such as find out in Fig. 9 C, the section 684 extended upward of the wire terminations 626 of DD coils is extended to by modularization iron oxygen In the space that body block sub-assembly 660 occupies, so as to which the integral thickness of Vehicular charging pad 600 is at least reduced quadrature coil 640 The thickness of the wire terminations 626 of first end 642b and DD loop construction 620.Therefore the slit 644 of Longitudinal extending is provided and is used for Permit from quadrature coil 640 extend an at least electric wire (such as first end 642b) and DD loop constructions 620 at least one Root electric wire (such as wire terminations 626) between ferrite block section 662a and 662b by device.
Figure 10 is the bottom plate of Fig. 8 and the partial exploded perspective view of modularization ferrite block sub-assembly, is schematically described The flux generated by DD loop constructions.Figure 11 is the bottom plate of Fig. 8 and the partial exploded perspective view of modularization ferrite block sub-assembly, It schematically describes the flux generated by quadrature coil.Slit 664 is attributed in modularization ferrite block sub-assembly 660 Layout can reduce the integral thickness (referring to Fig. 9 A) of the Vehicular charging pad 600 after assembling without the vehicle after significantly affecting assembling The magnetic property of charging pad.
Because slit 664 extends in a longitudinal direction, by or very close to DD loop constructions 620 First Line The center (referring for example to Fig. 6 A and 6B) of 624 the two of circle 622 and the second coil.Specifically, slit 664 will be substantially with first 602 and second pole 604 of pole is intersecting, and first coil 622 is wound around first pole, and the second coil 624 surrounds second pole Winding.It can such as find out in Fig. 10, the magnetic flux 692 generated by DD loop constructions 620 is substantially parallel to the narrow of Longitudinal extending The direction of slot 664.Because slit is generally aligned with the magnetic flux 692 generated by DD loop constructions, in DD loop constructions Magnetic flux path magnetoresistive (or referred to as magnetic resistance) in almost without increase.
Similarly, because slit 664 extends in a longitudinal direction, slit 664 is extended past in quadrature coil 640 The heart (referring to such as Fig. 7 A and 7B).Can such as find out in fig. 11, slit 664 be again at wherein its to being produced by quadrature coil 640 Raw magnetic flux 694 has at the position of minimum influence, because magnetic flux 694 is combined substantially parallel to modularization ferrite block Part 660 or vertically slave module ferrite block sub-assembly 660 escapes so that in the magneto-resistor of the magnetic-path of quadrature coil 640 In equally exist few increase.Magnetic emulation has shown that, slit 664 is included in ferrite and inductance in conductive backings and returns Have in terms of the two is lost because caused by the induction of vortex flow to the performance of both DD loop constructions 620 and quadrature coil 640 There is slight influence.
As briefly discussed above, the use of the ferrite structure of groove or slit comprising Longitudinal extending is not limited to as above The arrangement of the tricyclic with multiple loop constructions shown in text.In other embodiments, bag can be achieved in groove or including for slit Containing at least electric wire section by another coil section (such as extending internally electric wire section from multiturn ring) The size of the reduction of any charging pad of coil.
Figure 12 A are the partial exploded perspective views of the vehicle pad for the single loop construction for including two multiturn rings.Vehicle The bottom plate 750 that 700a includes support ferrite structure 760 is padded, the ferrite structure is included through the narrow of Longitudinal extending therebetween Slot 764 and separated two ferrites section 762a and 762b.Vehicle pad 700a is also included in the form of DD loop constructions 720 Single loop construction 726 and the vehicle pad cover 710 that can be set to keep the groove 712 of DD loop constructions 720 comprising size.
DD loop constructions 720 include the first multiturn ring or coil 722 and the second multiturn ring coplanar with first coil 722 or Coil 724.As discussed above in relation to DD loop constructions 622 (referring to Fig. 6 A), first coil 722 is located in the end of electric wire 726 near-end, and first coil 722 is wound from inside to outside, and the second coil 724 be located in wire terminations 726 end and from It winds outside to inside.In this arrangement, from first and second coil 722 and 724 to extend internally wire terminations 726 necessary In the upper of first and second coil 722 and 724 or lower section by so as to increase the thickness of DD loop constructions 720.
However, as discussed above, comprising vertical between two ferrite sections 762a and 762b of ferrite structure 760 Allow to connect up wire terminations 726 through slit to the slit 764 of extension so that by the wire terminations by coil 722 and 724 Increase in the thickness of DD loop constructions 720 caused by 726 will not cause in the integral thickness of the charging pad 700a after assembling Increase.
Figure 12 B are the partial exploded perspective views of the vehicle pad for the single loop construction for including single multiturn ring.Vehicle pad 700b includes the bottom plate 750 of support ferrite structure 760, and the ferrite structure includes the slit by Longitudinal extending therebetween 764 and separated two ferrites section 762a and 762b.Vehicle pad 700b is also comprising single in the form of single multiturn ring Loop construction 740 and can include size be set to hold-in winding structure 420 groove 711 vehicle pad cover 710.
The loop construction that single loop construction 740 can be formed by two parallel wires in some embodiments, with Fig. 7 A Quadrature coil 640 as.From the internal stretch of the multiturn ring of loop construction 740 and pass through the section of single loop construction 740 Above or below by wire terminations 742 can increase the thickness of loop construction 740, but do not increase assembling after Vehicular charging pad The thickness of 700b, because wire terminations 742 may pass through the slit 764 of Longitudinal extending.Although it is retouched compared with certain coil structure State the embodiment of Figure 12 A and 12B, but between ferrite section the slit comprising Longitudinal extending or groove can realize wherein one or A part for multiple loop constructions above or below another part of one or more loop constructions by with increase by one or The size of the reduction of any charging pad arrangement of the thickness of multiple loop constructions.
Although having discussed some features of illustrated embodiment above, those not all features are all to substitute The required feature of property embodiment, except nonspecific such identification.The manufacture tolerance limit of ferrite tile is fully accurate real wherein It applies in scheme, the small inclined-plane on the corner of tile can be eliminated.It in some embodiments, can such as smaller charging pad Omit by the immediate vicinity in device that leg and aperture provide by inside fasten.
Although it is described as the module formed by multiple ferrite tiles in ferrite block some embodiments herein Change sub-assembly, but the ferrite block can be, for example, by the separated two adjacent ferrites of slit in other embodiments Block.In the wherein ferrite block embodiment thicker than electric wire, recess can be formed in adjacent ferrite block rather than separate In the slit of two different ferrite block sections.In the wherein ferrite block other embodiments thicker than electric wire, pass through At least some electric wires in the electric wire of slit or groove can not be positioned side by side as demonstrated, but alternately horizontal with other electric wires It deviates to allow thinner groove or slit to ground.In another alternative limitation, slit can extend only through adjacent iron oxygen A part for body block, and edge extensible or that ferrite block can not extended to.
A variety of different any one of skill and technology can be used to represent information and signal.For example, can by voltage, Electric current, electromagnetic wave, magnetic field or magnetic particle, light field or light particle or any combination thereof represent can to run through mentioned by above description Data, instruction, order, information, signal, position, symbol and chip.
Various illustrative components, blocks, module, circuit and the algorithm steps described with reference to embodiment disclosed herein It can be implemented as the combination of electronic hardware, computer software or both.In order to clearly demonstrate hardware and software this is interchangeable Property, usually describe various illustrative components, block, module, circuit and step in terms of functionality above.This is functional real Depending on applying as hardware or software depending on specific application and forcing at the design constraint of whole system.Can be directed to it is each it is specific should Implement described function in a varying manner, but these implementation decisions should not be interpreted as causing the reality for departing from the present invention Apply the scope of example.
General processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field programmable gate can be passed through Array (FPGA) or other programmable logic devices, discrete gate or the transistor for being designed to perform function described herein Logic, discrete hardware component or any combination thereof be practiced or carried out describing various with reference to embodiment disclosed herein Illustrative components, blocks, module and circuit.General processor can be microprocessor, but in alternative solution, processor can be any Conventional processor, controller, microcontroller or state machine.Processor may also be implemented the combination for computing device, for example, DSP and the combination of microprocessor, the combination of multi-microprocessor, one or more microprocessors and DSP core combine or it is any This other configuration.
The method or algorithm or step and function described with reference to embodiment disclosed herein can directly with hardware, with The software module that is performed by processor is embodied with both described combination.If implemented in software, then the function can be made It is stored in for one or more instructions or program code in tangible, non-transitory computer-readable media or via tangible, non-temporary When property computer-readable media transmits.Software module can reside within random access memory (RAM), flash memory, read-only deposit Reservoir (ROM), electrically programmable ROM (EPROM), electrically erasable ROM (EEPROM), buffer, hard disk, removable magnetic In the storage media of disk, CD-ROM or any other form known in the art.Storage media are coupled to processor makes Information can be read from the storage media and write information to the storage media by obtaining the processor.In alternative solution, Storage media can be integrated into processor.As used herein, disk and CD include compact disk (CD), laser-optical disk, light Disk, digital versatile disc (DVD), floppy discs and Blu-ray Disc, wherein disk usually magnetically reproduce data, and light Disk by laser reproduce data optically.Combinations of the above should also contain in the range of computer-readable media. Processor and storage media can reside in ASIC.The ASIC can reside in user terminal.In alternative solution, processor And storage media can be resided at as discrete elements in user terminal.
For the purpose of the present invention is summarized, certain aspects of the invention, advantage and novel feature has been described herein.It should Understand, all these advantages may not can be achieved according to any particular embodiment of the invention.It is thereby achieved that or optimize such as this The advantage or a group advantage taught in text is without realizing the further advantage as that may teach or propose herein Mode embodies or carries out the present invention.
The various modifications of embodiments described above will be readily apparent, and can not depart from the present invention spirit or Generic principles defined herein is applied to other embodiments in the case of scope.Therefore, the present invention is not intended to be limited to herein Middle shown embodiment, but the widest scope consistent with principle disclosed herein and novel feature will be endowed.
1. a kind of charging pad, including：
First coil structure, is formed by single-wire, and the first coil structure includes：
The first coil section wound in a first direction；And
The second coil area that is coplanar with the first coil section and being wound in second direction opposite to the first direction Section；
Second loop construction；And
Ferrite block structure, the ferrite block structure include the separated Liang Ge ferrite blocks area of slit by Longitudinal extending Section, and the ferrite block structure positioning is on the side opposite with the first coil structure of second loop construction, with So that at least electric wire from first coil structure extension and at least electricity from second loop construction extension Line extends through a part for the slit of the Longitudinal extending in the ferrite block structure.
2. charging pad according to claim 1, wherein the first coil section is wound around the first pole, and described second Coil section is wound around the second pole, and the slit of wherein described Longitudinal extending is substantially parallel in first and second pole Between the geometrical line that extends.
3. charging pad according to claim 2, wherein the flux from first and second pole is in the opposite direction.
4. charging pad according to claim 1, wherein second loop construction is wound around the first pole, and it is wherein described The slit of Longitudinal extending substantially extremely intersects with described first.
5. charging pad according to claim 4, wherein second loop construction interacts with perpendicular flux.
6. charging pad according to claim 1, wherein the slit warp of the Longitudinal extending in the ferrite block structure The center of first and second coil section of the first coil structure is crossed, and by second loop construction The heart.
7. charging pad according to claim 1, wherein the ferrite block structure is to include the mould of multiple ferrite tiles Block ferrite block sub-assembly.
8. charging pad according to claim 7, wherein each of corner of the ferrite tile includes at least gently Slightly-inclined face.
9. charging pad according to claim 7, wherein the ferrite tile includes：
Multiple substantial rectangular ferrite tiles；And
Multiple ferrite tiles at least one beveling corner, wherein four in the multiple ferrite tile are located So that the beveling corner is positioned adjacent to each other to form the aperture for extending through the ferrite block sub-assembly.
10. charging pad according to claim 1, additionally comprises：
Bottom plate supports the ferrite block structure；And
Pad cover, supports the first coil structure, wherein the bottom plate is fastened to the pad cover, wherein the first coil knot Structure, second loop construction and the ferrite block structural arrangement are between the bottom plate and the pad cover.
11. charging pad according to claim 1, wherein：
The first coil structure includes the first electric wire for extending from the first coil section and from second coil section Second electric wire of extension；And
Second loop construction includes from second loop construction and extends internally the 3rd electric wire and from second line 4th electric wire of the external extension of coil structures, wherein at least described first, second, and third electric wire extend through the ferrite A part for the slit of the Longitudinal extending in block structure.
12. charging pad according to claim 11, wherein first and second electric wire passes through second loop construction Center and in the opposite with first and second coiler part of the first coil structure of second loop construction Pass through second loop construction on side.
13. charging pad according to claim 12 additionally comprises the support plate for supporting second loop construction.
14. charging pad according to claim 13, wherein the support plate includes：
A groove segment more than first, is located on the inside of second loop construction；And
A groove segment more than second, be located on the outside of second loop construction and with more than described first a grooves Segment cooperation extends past at least three electric wiring paths of second loop construction to define, wherein first, second He 3rd electric wire is maintained at least three electric wiring path.
15. charging pad according to claim 1, wherein each of described two ferrite block sections are multiple iron oxygen The sub-assembly of the substantial abutment of body block.
16. charging pad according to claim 1, wherein first and second loop construction is placed in the ferrite block In the single side of structure.
17. a kind of ferrite block structure in charging pad, the structure includes：
First ferrite block section, by the backplanes support, wherein the first ferrite block section is comprising more than first First modularization ferrite block sub-assembly of ferrite tile；And
Second ferrite block section, slit and the first ferrite block area by the backplanes support and by Longitudinal extending Section separation, wherein the second ferrite block section is the second modularization ferrite block group for including more than second a ferrite tiles Component；
Each of corner of wherein described ferrite tile includes at least slight inclined-plane to contribute to the ferrite tile Gapless assembling.
18. ferrite block structure according to claim 17, wherein the size of the first ferrite block section is equal to described the The size of two ferrite block sections.
19. ferrite block structure according to claim 17, wherein the slit of the Longitudinal extending and the bottom plate is vertical It is aligned to the center line of extension.
20. ferrite block structure according to claim 17 is glued wherein the first and second ferrite blocks section passes through Mixture is fastened to the bottom plate.
21. ferrite block structure according to claim 17, wherein the ferrite tile includes：
Multiple ferrite tiles, at least one beveling corner, wherein four warps in the multiple ferrite tile are fixed Position is so that the beveling corner is positioned adjacent to each other to form the aperture for extending through the ferrite block sub-assembly.
22. a kind of charging pad, including：
For extracting the first device of electric power from the horizontal component in the magnetic field intercepted by the charging pad, wherein for extracting electric power The first device include the first coil structure that is formed by single-wire；
For extracting the second device of electric power from the vertical component in the magnetic field intercepted by the charging pad, wherein for extracting The second device of electric power includes the second loop construction；
For enhancing to extract the coupling between the first device of electric power and the second device and wireless charging system Device, wherein for enhance coupling described device include ferrite block structure, the ferrite block structure include two iron Oxysome block section；And
For permitting from for at least electric wire for extracting the extension of the first device of electric power and from for extracting electric power An at least electric wire for the second device extension leads between described two ferrite block sections of the coupling intensifier The device crossed；
Wherein described ferrite block structure positioning on the side opposite with the first coil structure of second loop construction, So that from an at least electric wire described in first coil structure extension and from described in second loop construction extension An at least electric wire extends through to permit passing through between described two ferrite block sections of the coupling intensifier Described device a part.
23. charging pad according to claim 22, wherein the first coil structure includes：
The second coil area that is coplanar with the first coil section and being wound in second direction opposite to the first direction Section, wherein the first coil section is wound around the first pole and second coil section is wound around the second pole, and wherein It is described for permit between the section of the coupling intensifier by device substantially parallel to described first and the The geometrical line that extends between two poles and extend.
24. charging pad according to claim 23, wherein the flux from first and second pole is in the opposite direction.
25. charging pad according to claim 22 wherein second loop construction is wound around the first pole, and is wherein used In permit it is described coupling intensifier described two ferrite block sections between by described device substantially with it is described First is extremely intersecting.
26. charging pad according to claim 25, wherein second loop construction interacts with perpendicular flux.
27. charging pad according to claim 22, wherein：
The first coil structure includes：
For permit it is described coupling intensifier described two ferrite block sections between by described device be included in The slit of Longitudinal extending between described two ferrite block sections；And
Described first and of the slit of the Longitudinal extending in the ferrite block structure Jing Guo the first coil structure The center of two coil section, and by the center of second loop construction.
CN201480024017.9A 2013-05-01 2014-04-29 Vehicular charging pad with reduce thickness CN105164771B (en)
US201361818387P true 2013-05-01 2013-05-01
US61/818,387 2013-05-01
US14/155,638 2014-01-15
US14/155,638 US9676285B2 (en) 2013-05-01 2014-01-15 Vehicle charging pad having reduced thickness
PCT/US2014/035884 WO2014179320A1 (en) 2013-05-01 2014-04-29 Vehicle charging pad having reduced thickness
CN105164771A CN105164771A (en) 2015-12-16
CN105164771B true CN105164771B (en) 2018-05-29
ID=51841113
CN201480024017.9A CN105164771B (en) 2013-05-01 2014-04-29 Vehicular charging pad with reduce thickness
US (1) US9676285B2 (en)
EP (1) EP2992537A1 (en)
JP (1) JP6456361B2 (en)
CN (1) CN105164771B (en)
WO (1) WO2014179320A1 (en)
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2014-01-15 US US14/155,638 patent/US9676285B2/en active Active
2014-04-29 WO PCT/US2014/035884 patent/WO2014179320A1/en active Application Filing
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