Source: https://patents.google.com/patent/CN106915264A/en
Timestamp: 2020-08-11 11:25:47
Document Index: 344998522

Matched Legal Cases: ['art 15', 'art 15', 'art 15', 'art 15', 'art 15', 'art 15']

CN106915264A - For the onboard charger of electric vehicle - Google Patents
For the onboard charger of electric vehicle Download PDF
CN106915264A
CN106915264A CN201611272946.9A CN201611272946A CN106915264A CN 106915264 A CN106915264 A CN 106915264A CN 201611272946 A CN201611272946 A CN 201611272946A CN 106915264 A CN106915264 A CN 106915264A
CN201611272946.9A
G·R·马西普
法可特里亚股份有限公司
2015-12-24 Priority to EP15382662.3 priority
2016-12-23 Application filed by 法可特里亚股份有限公司 filed Critical 法可特里亚股份有限公司
2017-07-04 Publication of CN106915264A publication Critical patent/CN106915264A/en
For the onboard charger of electric vehicle.A kind of onboard charger for electric vehicle, there is the onboard charger exchange input and direct current power to export and including housing, the housing accommodates Power Electronic Circuit, control electronic circuit, capacitor, inverter, at least one transformer, at least one input inductor and at least one output inductor are allowing input AC electricity to be converted to output direct current, the base portion of housing is combined with cooling circuit, so that at least one transformer, at least one input inductor and at least one output inductor are disposed in the compartment that the base portion of the housing by least one inwall and onboard charger and multiple sides wall are limited, compartment is at least partially filled with embedding part, embedding part covers at least one transformer at least in part, at least one input inductor and at least one output inductor, these three elements constitute a magnetic patch.
For the onboard charger of electric vehicle
The present invention relates to onboard charger (OBC), belong to the type of the charger for electric vehicle battery, it will exchange Electricity is converted to direct current and is charged with to electric vehicle battery.
Onboard charger is electric power converter, and it generally includes multiple blocks and stage：
- input：Including being input to the electrical power conversion of direct current intermediate capacitance tank (tank) from exchange, and one may be needed A little inductors.
- capacitor groove：For filtering and intermediate energy storage.
- inverter：It is using energy of the storage in capacitor groove and converts thereof into alternating current transmission to transformer Power electronics block.
- transformer：It is magnetic part, for isolation and the regulation of voltage/current between input side and outlet side (adaptation)。
- output：Including the electrical power conversion exported to the direct current power for being transferred to battery to be charged from transformer alternating output. For the electrical power conversion, it is necessary to some inductors to output current in order to be filtered.
- power supply PCB：For the electronic circuit of the regulation of the electrical power conversion in all stages.Realized including electric adjustment With the sensor for voltage and electric current.
- control PCB：Control the electronic circuit of the function of onboard charger.Control PCB communicates with setting with power supply PCB The value of required charge parameter.Control PCB also receives the information on actual value from power supply PCB.Control PCB be also connected to vehicle with For communicating.
Magnetic part (input inductor, transformer, output inductor) is generally arranged on vehicle-mounted filling with three independent magnetic patch Electrical equipment inside.Each in these blocks is generally by thread one or two element group of the copper around ferrite core FCl Into, it is contained in aluminum enclosure and is fixed in housing with by part by embedding part (potting) covering, and as medium Stop (dielectric barrier).Each in these blocks is assembled in OBC housings by screw (it is also made of aluminum) It is interior.
This arrangement of the magnetic part of OBC has multiple shortcomings from from the perspective of fixation and takes big quantity space. By screw be mechanically fixed so that OBC to by be transferred to the base portion of the housing of OBC vibration and impact caused by damage more It is sensitive.
It is therefore an object of the present invention to provide a kind of onboard charger, wherein magnetic part (input inductor, transformer, Output inductor) there is greater compactness of arrangement in OBC, while improving the fixation with the housing of OBC.
The present invention provides a kind of onboard charger for electric vehicle, and the onboard charger has exchange input and direct current Electric power output and including housing, the housing accommodates Power Electronic Circuit, control electronic circuit, capacitor, inverter, at least one Individual transformer, at least one input inductor and at least one output inductor are converted to output direct current to allow input AC electricity Electricity, the base portion of housing is combined with cooling circuit so that at least one transformer, at least one input inductor and at least one are defeated Go out inductor and be disposed in the compartment that the base portion of the housing by least one inwall and onboard charger is limited with multiple sides wall Interior, the compartment is at least partially filled with embedding part, and embedding part covers at least one transformer, at least one at least in part Input inductor and at least one output inductor, these three elements constitute a magnetic patch.
In fact, using the configuration, the embedding part for covering magnetic part is fixed firmly on the wall of the housing of OBC, its Robustness there is provided the arrangement of magnetic part and in a straightforward manner.
It is a further advantage of the invention that it allows to reduce the external dimensions of OBC, this is due to for each magnetic part The fact that need not individually fix.
It is a further advantage of the invention that magnetic patch provides EMC shieldings, this is due to the shell that magnetic patch is preferably made of aluminum The wall of body is surrounded.
In addition, arrangement of the invention allows the more preferable distribution (avoiding focus) of hot-fluid, and including being magnetic Contact between the magnetic patch of part and the housing (it is used as radiator) of OBC is greatly increased to improve radiating.This is allowed in tool Have the OBC of relatively low pressure drop housing base portion on realize simpler cooling circuit, this is very important, because cooling agent General cooling circuit from vehicle.
For the more complete understanding present invention, the present invention is more fully described below with reference to accompanying drawings, wherein：
Fig. 1 is the stereogram of the onboard charger in the prior art do not covered, and shows its internal part.
Fig. 2 is the stereogram of the onboard charger of the invention not covered.
Fig. 3 is the schematic block diagram of onboard charger of the invention.
Fig. 4 is the stereogram of the housing of the onboard charger of the invention with lid.
Fig. 5 shows the stereogram of the internal structure of onboard charger of the invention.
Fig. 6 shows the side view of the internal structure of the onboard charger of the invention of no housing.
Fig. 7 is the stereogram of the internal structure of the onboard charger of the invention of the side wall without housing.
Fig. 8 is the plan of onboard charger of the invention, shows heat generating components.
Fig. 9 is the stereogram of onboard charger of the invention, show cooling circuit and heat generating components and coldplate it Between contact.
Figure 10 is the stereogram of onboard charger of the invention, shows cooling circuit and cooling agent in cooling circuit Flowing.
Fig. 1 corresponds to the onboard charger (OBC) in the prior art without lid, shows its internal part.In the figure, Magnetic part (input inductor, transformer, output inductor) is arranged in inside OBC with three independent magnetic patch.In these blocks Each be made up of thread two elements of copper around ferrite core FCl, be contained in aluminum enclosure and lead to Embedding part (potting) covering is crossed to be fixed in housing with by part, and as dielectric impedance.Each in these blocks It is assembled into OBC housings (it is also made of aluminum) by screw.
Fig. 2 corresponds to OBC of the invention 1, and its middle cover 19 is removed seeing internal part.In the figure, As can be seen that created in OBC 1 to have compartment 13 to place input inductor 10, the and of transformer 9 in shared public space Output inductor 11, constitutes magnetic patch 8.In the implementation method of Fig. 2, compartment 13 is by three side walls of housing 4, the base portion of housing 4 And an inwall 14 is limited, it separates magnetic part with the miscellaneous part being placed in OBC 1.
Fig. 3 is the schematic block diagram of OBC of the present invention 1, including input, capacitor, inverter, transformer, output, power supply PCB, control PCB and magnetic patch 8.OBC 1 allows input AC electricity to be converted into exporting direct current, and meaning property shows as shown in the block diagram 's.
Fig. 4 shows the substantially external view of the housing 4 of the OBC 1 with lid 19 of the invention.It is also shown at it just The connector (exchange input 2, direct current output 3, inlet connector 16, Outlet connector 17) in face.
Fig. 5 to Fig. 7 is the different views of the part of OBC 1, which also illustrates its internal structure.In these figures, can be with Find out, the compartment 13 for accommodating transformer 9, input inductor 10 and output inductor 11 is partially filled with embedding part 15, the filling Sealing 15 partly covers transformer 9, input inductor 10 and output inductor 11, and these three parts constitute a magnetic patch 8.By It is accurate (delicate) in some magnetic parts, therefore it is expedient to is completely covered without embedding part 15.
Preferably, embedding part 15 filling compartment 13 height at least 3/4ths, such as in figure 6 it can be seen that Sample.
The fixation of magnetic part (input inductor 10, transformer 9, output inductor 11) to housing 4 be it is more firm, Because magnetic patch 8 is fixed directly to the housing 4 of OBC 1 by embedding part 15, as can see in these figures, pass through This mode eliminates screw.
In the figure 7, it can be seen that fixation and installation design (concept) for OBC of the invention 1.In order to avoid Vibration damage, magnetic patch 8 is fixed to housing 4 by embedding part 15, and capacitor 7 and ferrite are by support 20 and resin embedding part Mode is fixed.Support 20 and wave filter PCB 26 be fixed directly to housing 4 and fixing point using metal insert 21 come Reinforcement avoids ductility crack to improve steadiness.In order to box is fixed on vehicle, according to client's needs, can be in bottom surface reality Existing four M6 blind holes.
Fig. 8 shows the distribution of heat generating components, and it will be considered when cooling circuit is designed.Main heat generating components is power supply mould Block is (for example, the first power module 23：150W；Second source module 24：140W) with magnetic patch 8 (45,50W).Snubber resistance 25 Produce 5W.
Fig. 9 shows all of heat generating components by screw (in the case of power module；Referring to arrow) or pass through Embedding part 15 is (in the case of magnetic patch 8；Referring to dotted line) it is affixed directly to the base portion of housing 4.
In figure 9 and in figure 10, it can be seen that the base portion of the housing 4 of OBC 1 is integrated with cooling circuit 12.Fig. 9's and Figure 10 Cooling circuit 12 includes the cold drawing, the entrance and exit that are integrated in the housing of OBC.Cooling agent is entered by inlet connector 16 Enter, left by Outlet connector 17.Cooling circuit 12 has multiple (several) parts, and it is considering heat generating components It is arranged in the case of distribution, so that the heat that these parts are produced can dissipate away.
Power semiconductor (power semiconductor) is affixed directly to be integrated with the bottom of the housing 4 of cold drawing, to permit Good thermo-contact in cooling allowable.
Preferably, cooling agent is liquid.Can be to use other cooling systems (such as although liquid cooling is preferred Cooled down with nature or the air of forced convertion).
Several fins (fin) can also be set on the lateral wall of the housing 4 of OBC1 with the (not shown) that radiates.
The housing 4 of the onboard charger 1 of the cold drawing including cooling circuit 12 is preferably by high density die casting (HDDC) aluminum Into.
Although combined preferred embodiment has fully described the present invention, but it is clear that can be introduced in the range of it repairing Change, be not considered as that this is limited by these implementation methods, but limited by the content of following claim.
1. a kind of onboard charger (1) for electric vehicle, the onboard charger (1) is with exchange input (2) and direct current Electric power output (3), and including housing (4), the housing (4) accommodates Power Electronic Circuit (5), control electronic circuit (6), electricity Container (7), inverter, at least one transformer (9), at least one input inductor (10) and at least one output inductor (11) to allow input AC electricity to be converted to output direct current, the base portion of the housing (4) is combined with cooling circuit (12), and it is special Levy and be, at least one transformer (9), at least one input inductor (10) and at least one outputting inductance Device (11) is disposed in the base portion of the housing (4) by least one inwall (14) and the onboard charger (1) In the compartment (13) limited with multiple side walls so that the compartment (13) is at least partially filled with embedding part (15), the filling Sealing (15) covers at least one transformer (9), at least one input inductor (10) and described at least in part At least one output inductor (11), these three elements constitute a magnetic patch (8).
2. the onboard charger (1) for electric vehicle according to claim 1, wherein, embedding part (15) filling At least 3/4ths of the height of the compartment (13).
3. the onboard charger (1) for electric vehicle according to claim 1 or claim 2, wherein, the cooling Loop (12) includes the cold drawing, the entrance and exit that are integrated in the housing (4) of the onboard charger (1).
4. the onboard charger (1) for electric vehicle according to any one of the preceding claims, wherein, cooling agent is Liquid.
5. the onboard charger (1) for electric vehicle according to any one of claim 1 to 3, wherein, cooling agent is Air.
6. the onboard charger (1) for electric vehicle according to any one of the preceding claims, wherein, it is described vehicle-mounted The housing (4) of charger (1) is included in the multiple fins on its lateral wall to be radiated.
7. the onboard charger (1) for electric vehicle according to any one of claim 3 to 6, wherein, including it is described The housing (4) of the onboard charger (1) of the cold drawing of cooling circuit (12) is made up of high density die casting aluminium.
CN201611272946.9A 2015-12-24 2016-12-23 For the onboard charger of electric vehicle CN106915264A (en)
EP15382662.3 2015-12-24
CN106915264A true CN106915264A (en) 2017-07-04
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