Patent Description:
A battery for an existing electric vehicle is generally installed in a fixed manner or in a replaceable manner. As for the fixed manner, the battery is generally fixed to the vehicle, and the vehicle is directly used as a charging target during charging. As for the replaceable manner, the battery is generally detachable, that is, the battery can be removed at any time for replacement or for charging and can be mounted to a vehicle body after the replacement or charging.

When the battery is charged, the battery is connected to an external power source by means of a corresponding electrical connector. The electrical connector needs to keep in contact with the battery during the whole charging period. All the existing charging plugs are of fixed structures and have no active adjustment. Once the battery moves or waggles, charging contact points may deviate, resulting in interruption in charging. In addition, due to a large size of the battery, when its charging interface is in contact with the electrical connector, they cannot always align accurately, or the battery may move after the alignment, which both influence a charging effect. Furthermore, the existing electrical connector employs a fixed plug for connection with the battery, and the plug is easy to damage when pressed in a vertical direction. High and low voltage wires in the electrical connector are fixed outlet wires with rigid connection at terminals, the contact points may be disconnected under various influences, such as environment, temperature, and vibration of the vehicle body, resulting in unstable electrical connection, and even abnormalities such as failure of electrical connection or burnout.

In addition, the charging manner for a replaceable battery usually works in this way that the battery is removed and put in a designated location, and then is manually connected to a charging device. This manner needs manual work at any time, which increases work intensity and is unsuitable for fast-paced line production.

Application <CIT> discloses a quick connecting device of a power battery for an electric vehicle. The quick connecting device comprises an insulation base, two pole terminals and a limiting device, wherein the two pole terminals are arranged on the insulation base in a penetrating way along the vertical direction; the limiting device is used for limiting the displacement stroke of the pole terminals on the insulation base in the vertical direction; gaps are arranged between the pole terminals and the insulation base.

Application <CIT> discloses a structure of a plane connector of a power conversion and charging system of an electric vehicle. The structure is characterized in that all high-voltage electrodes and low-voltage electrodes of the plane connector of the power conversion and charging system of the electric vehicle are all arranged on an integral installing seat; an external cable is connected onto a switching seat separated from the integral installing seat; meanwhile, at least one high-voltage electrode is connected with a flexible lead; and the other end of the flexible lead is connected onto the switching seat and is connected with the external cable by the switching seat.

Application <CIT> discloses a floating type end face contact connector. The connector comprises a bottom plate and a contact cavity. Supporting plates are arranged on the bottom plate. The supporting plates and the bottom plate form a groove. A first long-strip-shaped installation hole is formed in the middle of the bottom plate. Positioning pins are arranged at the four corners of the bottom plate respectively. A contact cavity flat plate is installed in the groove, and a second long-strip-shaped installation hole is formed in the middle of the contact cavity flat plate. An insulator is arranged in the contact cavity, and the insulator is internally provided with a large contact and a small contact.

Application <CIT> discloses a connector assembly for coupling an electric motor to a power source. The power source comprises a first conductive member. The connector assembly comprises a non-conductive member having an inner channel configured to receive at least a portion of the first conductive member, a second conductive member slidably disposed within the inner channel, coupled to the electric motor, and configured to be coupled to, and to receive a force having a first direction from, the first conductive member, and a spring member, retained between the non-conductive member and the second conductive member and configured to resist movement of the second conductive member in the first direction.

Application <CIT> discloses an electric car vehicle-mounted power cell charging platform. The platform comprises a support and an installing pedestal for installing a charging pole column; a bracket for placing a vehicle-mounted power cell is arranged on the support through an elastic mechanism, the installing pedestal can be movably arranged on the bracket; a guiding mechanism is arranged on the support. When the vehicle-mounted power cell is arranged on the bracket, the installing pedestal is guided by the guiding mechanism to move toward the vehicle-mounted power cell.

Application <CIT> discloses a pole component relating to the preamble of claim <NUM>, in particular a connector with a first coupling device with a first connection for a first electrical cable and a second coupling device with a second connection for a second electrical cable and wherein both coupling devices are interlocking for electrical contact. The second coupling device includes a first component to contact the first coupling device by interlocking, a second component that includes the second connection, and a coupling device for electrical coupling of the first component with the second component, wherein both components are flexible relative to each other in radial and/or axial direction.

The present disclosure aims to overcome a defect in the related art that a charging contact point is easily displaced when a battery is charged. Accordingly, the present disclosure provides a pole component as defined in claim <NUM>, a high-voltage assembly as defined in claim <NUM>, and an electrical connector as defined in claim <NUM>.

The present disclosure provides an elastic pole in an embodiment which does not fall within the subject-matter of the claimed invention.

The elastic pole includes: a pole body having an electrical contact terminal for contact with another electrical contact terminal to establish electrical connection and a cable connecting terminal for connection with a power cable, the electrical contact terminal and/or the cable connecting terminal being provided with a limiting member configured to mount the pole body on a pole mounting seat in a limiting manner; and an elastic member fitted over an outer surface of the pole body, located between the electrical contact terminal and the cable connecting terminal, and configured to cooperate with the limiting member to floatingly mount the pole body on the pole mounting seat.

Preferably, the limiting member includes a snap ring, the electrical contact terminal and/or the cable connecting terminal of the pole body has a groove into which the snap ring is snapped, and the snap ring inserted into the groove has an outer diameter larger than an outer diameter of the pole body to limit the elastic member to the pole body.

Preferably, the pole is a high-voltage pole, and a diameter of an electrical contact terminal of the high-voltage pole is larger than a diameter of a cable connecting terminal thereof, the snap ring is arranged at an end of the cable connecting terminal of the high-voltage pole, the elastic member is pressed and fixed to the pole body between the electrical contact terminal and the snap ring; or the pole is a low-voltage pole, an end of an electrical contact terminal of the low-voltage pole and an end of a cable connecting terminal thereof are both provided with a snap ring, and the elastic member is pressed and fixed between snap rings at two ends.

Preferably, the elastic member is a spring.

Preferably, the cable connecting terminal has a cable clamping groove recessed along an axis of the pole body, and the cable clamping groove is configured to mount a power cable.

The present disclosure further provides a pole component according to the invention as claimed. The pole component includes a pole, a conductive joint, and at least one conductive elastic member, wherein the pole has two ends provided with a first electrical connecting portion and a second electrical connecting portion respectively, the first electrical connecting portion is electrically connected to the conductive elastic member, the conductive joint includes a flexible member and a first contact, and the first contact has a first end connected to the flexible member and a second end electrically connected to the second electrical connecting portion.

Preferably, the pole component includes a pole plate having a receiving chamber, each of two ends of the receiving chamber defines a guiding hole, the pole runs through the receiving chamber, and two ends of the pole are exposed out of two guiding holes. In the solution, by means of the two guiding holes, the pole can only move in a direction defined by the two guiding holes and hence be limited, thereby preventing offset and malposition of the pole, and improving stability of the electrical connection.

Preferably, the pole has an end adjacent to the conductive joint, and the end has an outer wall provided with a limiting portion, the limiting portion has a first end connected to an outer surface of the pole and a second end extending and protruding in a radial direction of the pole, and the limiting portion is located outside the receiving chamber and abuts an outer surface of the receiving chamber. In the solution, with the above structure, the limiting portion can prevent the pole from falling off the pole plate, and ensure that the pole always runs through the two guiding holes. In addition, during movement of the pole, the limiting portion effectively prevents the pole from moving in a direction of the first electrical connecting portion, such that disengagement between the pole and the conductive joint can be prevented, and the stability of electrical connection between the pole and the conductive joint can be improved.

Preferably, the pole has an outer wall provided with an annular groove, and the limiting portion is a snap ring embedded in the annular groove. In the solution, with the above structure, the pole can be easily mounted to and dismounted from the pole plate and has a simple structure.

Preferably, the pole has the outer wall provided with a protrusion, the protrusion extends and protrudes outwardly in the radial direction of the pole, the protrusion runs through the guiding hole, the pole component includes an elastic body, the elastic body is located in the receiving chamber and located between the limiting portion and the protrusion, and the elastic body has two ends abutting an inner wall of the receiving chamber and the protrusion respectively. In the solution, with the above structure, a force along the first electrical connecting portion is exerted on the pole by the elastic body, and the first electrical connecting portion can retract under stress upon contact, thereby reducing rigid impact on the first electrical connecting portion. The floating connection can be achieved during the electrical connection, desired contact of the first electrical connecting portion is ensured, and the stability of the electrical connection of the first electrical connecting portion is greatly improved.

Preferably, the elastic body is a reset spring, and the pole runs through the reset ring. In the solution, with the above structure, the reset spring has high elasticity and good property, and is easy to restore. In addition, the pole is subjected to uniform force, and offset and malposition of the pole can be effectively prevented.

Preferably, the pole component includes an insulating bush, the insulating bush is connected to the pole plate and defines a cavity therein, and the conductive joint is located in the cavity. In the solution, with the above structure, the insulating bush protects, insulates, and seals the conductive joint well, thereby improving safety and reliability of the electrical connector.

Preferably, the insulating bush is provided with a wavy portion, and/or the insulating bush is connected to the pole plate by snapping. In the solution, with the wavy portion, the insulating bush has good flexibility, deformability of the insulating bush can be improved, and the insulating bush can insulate and seal the conductive joint in an improved way. The insulating bush is easy to mount on and dismount from the pole plate by a snapping connection.

Preferably, the first electrical connecting portion is provided with at least one placing chamber, the conductive elastic member has a contact portion and a pressing portion, the pressing portion is mounted in the placing chamber, and the contact portion is exposed out of an outer surface of the first electrical connecting portion. In the solution, with the above structure, the conductive elastic member is pressed and mounted on the first electrical connecting portion to achieve floating connection of the pole and a more stable electrical connection.

Preferably, the conductive elastic member is a first conductive spring.

According to this invention, the flexible member includes a cavity body, and the cavity body is made of a flexible conductive material. In the solution, with the above structure, when the conductive joint is employed, the cavity body can be stretch and compressed, or twisted in the radial direction, to adapt relative displacement of connection between the structures, performance of the electrical connection can be prevented from getting worse due to changes of relative displacement, stability of electrical connection of the pole component is greatly improved.

According to this invention, the conductive joint further includes a second contact, the flexible member has two ends connected to the first contact and the second contact respectively, and the flexible member further includes a spring located in the cavity body. In the solution, with the above structure, structural strength of the conductive joint is effectively enhanced by the spring, such that electrical connection of the conductive joint can be ensured even relative displacement of two ends the flexible member changes. In addition, the spring is conductive, which further improves stability of the electrical connection between the first contact and the second contact.

More preferably, the cavity body is crimped or welded to the first contact and the second contact. In the solution, with the above structure, strength of structural connection of the conductive joint is enhanced and the stability of electrical connection of the conductive joint is ensured.

Preferably, at least one second conductive spring is provided and pressed between the pole and the first contact. In the solution, with the above structure, the pole is floatingly connected to the first contact by the second conducive spring, thereby improving stability of electrical connection between the pole and the conductive joint.

Preferably, the second electrical connecting portion is provided with a first cavity portion, the first contact has an outer wall provided with at least one first annular spring groove, and the second conductive spring is provided and pressed between the first cavity portion and the first annular spring groove. In the solution, with the above structure, the second conducive spring is pressed and mounted between the pole and the conductive joint, achieving stable electrical connection.

The present disclosure further provides a high-voltage assembly. The high-voltage assembly includes the above pole component and a high-voltage pin. The high-voltage pin is electrically connected to the conductive joint, at least one conductive elastic body is provided and pressed between the high-voltage pin and the conductive joint, and the conductive elastic body is used to maintain electrical connection between the high-voltage pin and the conductive joint in case of floating between the high-voltage pin and the conductive joint. In the solution, with the above structure, the high-voltage pin is floatingly connected to the conductive joint by the conductive elastic body, thereby improving the stability of the electrical connection between the high-voltage pin and the conductive joint.

Preferably, the high-voltage pin is connected to the conductive joint by means of a socket, two ends of the socket are each provided with a second cavity portion, an outer wall of the high-voltage pin and an outer wall of the conductive joint each define at least one second annular spring groove, and the conductive elastic body is pressed between the second cavity portion and the second annular spring groove. In the solution, with the above structure, strength of mounting connection of the conductive elastic body is effectively enhanced, and the electrical connection is more stable.

Optionally, the conductive elastic body is a third conductive spring.

The present disclosure further provides an electrical connector. The electrical connector includes the above high-voltage assembly.

The present disclosure further provides another electrical connector in an embodiment which does not fall within the subject-matter of the claimed invention.

The electrical connector includes the above elastic pole.

Preferably, the electrical connector further includes: a baseplate configured to provide a mounting base, and a floating plate movably mounted to a surface of the baseplate by means of an elastic member, the elastic pole for electrical connection being mounted to the floating plate.

Preferably, the elastic pole is mounted to the floating plate by means of a pole mounting plate, the pole mounting plate defines a mounting hole, and the elastic pole runs through the mounting hole and is mounted in the mounting hole by means of a limiting member.

Preferably, the pole mounting plate is further provided with positioning columns, the positioning columns are mounted at two ends of the pole mounting plate and configured to limit a position where the elastic pole is in contact with a battery, each of the positioning columns has a first end fixed to the pole mounting plate and a second end configured as a tapered end, and a baffle is provided between the two ends and protrudes from the pole body; and/or the pole mounting seat is mounted on the floating plate by means of a screw.

Preferably, an edge of the baseplate and an edge of the floating plate are provided with a holder for mounting the elastic member, the holder includes a first fixing block provided around a baseplate mounting opening and a second fixing block provided on the floating plate and opposite to the first fixing block, and the elastic member is clamped and fixed by the first fixing block and the second fixing block from two ends.

Preferably, the floating plate is movably connected to the baseplate by means of a guiding member, the guiding member includes a guiding sleeve and a guiding screw, the guiding sleeve is mounted on the baseplate, and the guiding screw runs through the floating plate to be threadedly connected to the guiding sleeve.

More preferably, the floating plate is provided with a plurality of bumps on a side facing the baseplate, such that the floating plate can be spaced apart from the baseplate, or the pole mounting plate is provided with a boss on a side mounted with the elastic pole, the elastic pole is mounted on the boss, the pole mounting plate defines a groove recessed towards the boss on the other side, a closing plate is mounted on a surface of the groove, and the closing plate and the boss defines an accommodating space for accommodating the elastic pole.

Preferably, the baseplate and the floating plate define a baseplate mounting opening and a floating plate mounting opening respectively at positions corresponding to the pole mounting plate, and the cable connecting terminal of the elastic pole runs through the baseplate mounting opening and the floating plate mounting opening.

The present disclosure further provides a battery charging board for an electric vehicle in an embodiment which does not fall within the subject-matter of the claimed invention.

The battery charging board includes: an upper frame assembly configured to place a battery, and including an upper frame; a lower frame assembly located under the upper frame assembly, configured to elastically support the upper frame, and including a lower frame and an elastic device arranged on an upper surface of the lower frame; and a floating charging plate mounted on an end of the upper frame, configured to charge the battery, and including a mounting seat movably connected to the upper frame and the lower frame, and the electrical connector mounted on the mounting seat as described above.

Preferably, the mounting seat is connected to the upper frame by means of a slide rail device and connected to the lower frame by means of an orienting device; the slide rail device and the orienting device cooperate with each other to move the floating charging plate towards the battery to establish electrical insertion.

Preferably, the slide rail device includes a slide rail mounted on an upper surface of the upper frame and a sliding block fixedly mounted to a lower surface of the mounting seat in a corresponding position, and the sliding block defines a sliding slot fitted with the slide rail.

Preferably, the orienting device includes a pulley base provided to the lower surface of the mounting seat and having a pulley, and an orientation limiting base mounted on the upper surface of the lower frame and having an oblique groove, the oblique groove inclines in a direction identical to a direction of the slide rail, and the pulley is mounted in the oblique groove.

Preferably, the elastic device is a spring arranged on the upper surface of the lower frame, and a fixing cartridge for mounting and limiting the spring is provided in a corresponding position of a lower surface of the upper frame.

Preferably, the upper surface of the lower frame is provided with a limiting device to limit a downward moving track of the upper frame assembly, and the limiting device includes a limiting plate mounted on the lower frame assembly and having a longitudinal sliding groove, and a limiting rod provided to the upper frame and inserted in the longitudinal sliding groove.

Preferably, the limiting device further includes a positioning rod provided to the lower surface of the upper frame and a positioning base provided on the upper surface of the lower frame in a corresponding position, the positioning rod being inserted into the positioning base.

Preferably, a supporting plate is mounted above the upper frame assembly to limit movement of the battery, and the supporting plate is movably placed on the upper surface of the upper frame.

Preferably, a lower surface of the supporting plate is provided with an L-shaped right-angle mounting bar, the upper surface of the upper frame is provided with a stepped snapping plate, and the supporting plate is snapped to the snapping plate by means of the L-shaped right-angle mounting bar.

Preferably, the electrical connector is a floating electrical connector floatingly mounted on the mounting seat.

Various preferable embodiments can be achieved by arbitrary combination of the above preferable conditions according with the common knowledge in the art.

The positive advanced effects are reflected as follows.

According to the elastic pole of the present disclosure, the pole body is movably mounted on an assigned part and cannot escape from the mounting position due to a limiting member snapped into the annular groove. Meanwhile, the spring always exerts the elastic force on the pole body for maintaining a current state by means of cooperation with the assigned part. When in contact with a charging jack of a battery to be charged, the pole body can retract under stress, thereby achieving good contact effect with reduction in rigid impact.

According to the pole component and the high-voltage assembly of the present disclosure, the floating connections at two ends of the pole can be achieved by means of the conductive elastic body and the flexible member, abnormal situations, such as failure on the electrical connection, overburning, etc., due to loose connection can be effectively prevented, and the stability of the electrical connection in the electrical connector is improved.

According to the electrical connector of the present disclosure, an elastic fixation is provided between the floating plate and the baseplate, the floating plate can horizontally move relative to the baseplate to adapt to longitudinal movement of the battery. In addition, the elastic pole capable of retracting is inserted to the battery to adapt to lateral movement of the battery. With the present disclosure, stable electrical contact can be maintained all along in case of movement or waggle of the battery, improving charging effect.

According to the battery charging board of the present disclosure, the upper frame assembly, the lower frame assembly and the floating charging plate make a battery automatically move to charge after placement, insertion connection between the floating charging plate and the battery to be charged can be achieved automatically by means of cooperation among the interacting three during movement, such that the battery to be charged can be charged automatically. With the embodiment, the battery for an electric vehicle can be automatically charged completely without manual work, automatic processing during the whole charging period can be improved, and the charging efficiency can be increased. In addition, a plurality of battery charging boards cam be provided to automatically charge a plurality of batteries placed at any time, achieving line charging work for replaced batteries in bulk.

The present disclosure will be described hereafter via embodiments and shall not be construed to be limited within the scope of the embodiments. Moreover, embodiments that are not according to the invention are presented for illustration purposes only.

As shown in <FIG>, in an example of an embodiment which does not fall within the subject-matter of the claimed invention, an elastic pole <NUM> generally includes a pole body <NUM> and a spring <NUM>.

The pole body <NUM> has a first end configured as an electrical contact terminal <NUM> for contact with a battery, and a second end configured as a cable connecting terminal <NUM> for connection with a power supply line. The pole body <NUM> has an end outer surface defining an annular groove <NUM>. The contact terminal <NUM> can be in a planar shape to increase a contact area. The annular groove <NUM> can be used to mount a limiting member, such that the elastic pole <NUM> is mounted on a pole mounting seat <NUM> in a limiting manner.

The spring <NUM> is fitted over an outer surface of the pole body <NUM> and restricted in the pole mounting seat <NUM> after the mounting. The spring can generate an elastic force in a direction opposite a pressing direction when the contact terminal <NUM> of the pole body <NUM> is pressed, such that the pole body is mounted on the pole mounting seat <NUM> in a floating manner, and the pole is in good electrical connection with an electrical contact terminal of the battery.

In the example, the pole body <NUM> is movably mounted on an assigned part, such as an electrical connector for charging the battery, and cannot escape from the mounting position due to a limiting member snapped into the annular groove <NUM>. Meanwhile, the spring <NUM> always exerts the elastic force on the pole body <NUM> to maintain a current state under the cooperation between the limiting member and the pole mounting seat. When in contact with a charging jack of a battery to be charged, the pole body <NUM> can retract under stress, thereby achieving a good contact effect while reducing rigid impact.

In an example of the embodiment, the cable connecting terminal <NUM> of the pole body <NUM> can define a cable clamping groove <NUM> recessed along an axis of the pole body <NUM> in order to mount a charging cable easily. The charging cable can be inserted into the cable clamping groove <NUM> and connected to a corresponding pole body <NUM>.

In an example of the embodiment, the limiting member snapped into the annular groove <NUM> can be a C-shaped snap ring <NUM> having an opening, and the snap ring <NUM> has an outer diameter larger than a diameter of the pole body <NUM> and an inner diameter equal to a diameter of the annular groove <NUM>. When the snap ring <NUM> is snapped into a corresponding annular groove <NUM>, the spring is constrained to the pole body in the snap ring <NUM>, while the pole is mounted on the pole mounting seat in the limiting manner via the snap ring <NUM>, such that the pole cannot escape from the pole mounting seat when it is pressed by a charging end of the battery.

As shown in <FIG>, in an example of the embodiment, the pole body <NUM> can include a high-voltage pole <NUM> and a low-voltage pole <NUM> which are mounted on a pole mounting plate through a high-voltage mounting hole and a low-voltage mounting hole respectively, and an electrical contact terminal of the high-voltage pole <NUM> has a diameter larger than an electrical contact terminal of the low-voltage pole <NUM>.

In an example of the embodiment, in order to take full advantage of the structure of the high-voltage pole, a pole body diameter at the electrical contact terminal of the high-voltage pole <NUM> is larger than a pole body diameter at the cable connecting terminal thereof, that is the high-voltage pole can include a diameter-reducing segment <NUM> and a diameter-constant segment <NUM>. When inserted into a mounting hole in the pole mounting seat, the diameter-reducing segment <NUM> has an end exposed outside, and the annular groove <NUM> is provided in the exposed end, that is, the annular groove is located in an end outer surface of the cable connecting terminal outside the high-voltage mounting hole. The snap ring is snapped in the groove, such that the high-voltage pole is prevented from escaping from the mounting seat. The spring <NUM> is fitted over the diameter-reducing segment <NUM> and is clamped by the diameter-constant segment <NUM> and the high-voltage mounting hole so to be restricted in a current position. The pressed spring exerts an elastic force pushing the high-voltage pole towards the electrical contact terminal, and the snap ring cooperates with this mounting position, such that the pole is clamped in the mounting seat, that is, the high-voltage pole <NUM> will be blocked by the snap ring <NUM> snapped into the annular groove <NUM> at the second end if it is going to come out of the mounting position under the elastic force of the spring <NUM>. When the high-voltage pole <NUM> is under pressure in a vertical direction, the diameter-constant segment <NUM> can compress the spring <NUM> at the current mounting position, such that the high-voltage pole can move in a certain range.

As shown in <FIG>, in an example of the embodiment, the low-voltage pole <NUM> can be a cylinder having a constant diameter, and two ends of the low-voltage pole are each provided with an annular groove. The annular grooves can be located in an end surface of the cable connecting terminal of the low-voltage pole outside the low-voltage mounting hole and be located in an end surface of the electrical contact terminal inside the low-voltage mounting hole. Similarly, the annular grooves are used to mount corresponding limiting members, such as the snap ring <NUM>. The spring is fitted over the pole body between the two annular grooves. During mounting, the low-voltage pole can use two snap rings to be snapped at the same side of two ends of the low-voltage mounting hole in the pole mounting seat, while the spring is located in the low-voltage mounting hole to simultaneously exert elastic forces towards the two ends of the low-voltage pole on the two ends of the mounting hole. When subjected to a vertical pressure from one end of the mounting hole, the low-voltage pole can compress the spring to move towards the other end, such that a certain pressure can always be maintained between the low-voltage pole and a pressing member, thereby improving an electrical connection effect.

An electrical connector in another example of the embodiment can be a floating electrical connector, and include a baseplate <NUM> to provide a mounting base, a floating plate <NUM> floatingly connected to the baseplate <NUM> by means of an elastic member <NUM>, and a pole mounting seat <NUM> fixed to the floating plate <NUM> by means of screws <NUM>. The pole mounting seat <NUM> defines a mounting groove for mounting the elastic pole <NUM>. The elastic pole <NUM> is mounted on the pole mounting seat <NUM> by means of the mounting groove. The baseplate <NUM> and the floating plate <NUM> define mounting openings through which the cable connecting terminal of the elastic pole <NUM> passes.

As shown in <FIG>, an electrical connector of an embodiment according to the invention includes an electric-connector vehicle end <NUM> and an electrical connector battery end <NUM>. The electric-connector vehicle end <NUM> includes a vehicle-end floating plate <NUM>, a vehicle-end fixing plate <NUM>, and a high-voltage assembly <NUM>, the high-voltage assembly <NUM> has two ends connected to the vehicle-end floating plate <NUM> and the vehicle-end fixing plate <NUM> respectively. A floating electrical connection of the high-voltage assembly <NUM> is achieved by means of the vehicle-end floating plate <NUM> and the vehicle-end fixing plate <NUM>, thereby ensuring stability of the electrical connector during connection and operation.

The high-voltage assembly <NUM> includes a pole component <NUM> and a high-voltage pin <NUM>, the high-voltage pin <NUM> is connected to the vehicle-end fixing plate <NUM>, the pole component <NUM> is connected to the vehicle-end floating plate <NUM>, and the high-voltage pin <NUM> is electrically connected to the pole component <NUM>. At least one conductive elastic body is arranged between the high-voltage pin <NUM> and the pole component <NUM>, the conductive elastic body is used to keep electrical connection all along when the high-voltage pin <NUM> is floating relative to the pole component <NUM>. The floating connection between the high-voltage pin <NUM> and the pole component <NUM> by means of the conductive elastic body, which improves stability of the electrical connection between the high-voltage pin <NUM> and the pole component <NUM>.

As shown in <FIG>, <FIG> and <FIG>, the pole component <NUM> includes a pole <NUM>, a conductive joint <NUM>, at least one conductive elastic member (not shown in the drawings). The pole <NUM> has two ends provided with a first electrical connecting portion <NUM> and a second electrical connecting portion <NUM> respectively. The first electrical connecting portion <NUM> is electrically connected to the conductive elastic member, the conductive elastic member can be electrically connected to the first electrical connecting portion <NUM> by crimping. The first electrical connecting portion <NUM> is electrically connected to an electric-connector battery end <NUM>. The conductive elastic member is arranged between the first electrical connecting portion <NUM> and electrical connector battery end <NUM>, achieving the floating connection between the pole <NUM> and electrical connector battery end <NUM>, such that the electrical connection is more stable, especially for the electrical connection in the case of dynamic load and vibration environment, abnormal situations, such as failure on the electrical connection, overburning, etc., due to loose connection can be effectively prevented, and the reliability of the electrical connection is greatly enhanced and the service life is prolonged.

The conductive joint <NUM> includes a flexible member <NUM> and a first contact <NUM>. The first contact <NUM> has a first end connected to the flexible member <NUM> and a second end electrically connected to the second electrical connecting portion <NUM>. The flexible member <NUM> is electrically connected to the high-voltage pin <NUM>, the flexible member <NUM> is arranged between the pole <NUM> and the high-voltage pin <NUM>, achieving the floating connection between the pole <NUM> and the high-voltage pin <NUM>, abnormal situations, such as failure on the electrical connection, overburning, etc., due to loose connection can be effectively prevented, and the stability of the electrical connection of the pole <NUM> in the electrical connector is improved.

For improvement on stability of the electrical connection of the pole <NUM>, the pole component <NUM> can include a pole plate <NUM>, the pole plate <NUM> has a receiving chamber <NUM>. The receiving chamber <NUM> has two ends each provided with a guiding hole, the pole <NUM> runs through the receiving chamber <NUM> with two ends extending out of two guiding holes. With the two guiding holes, the pole <NUM> can only move back and forth in a direction defined by the two guiding holes, the pole <NUM> is effectively limited, offset and malposition of the pole <NUM> can be prevented, and the electrical connection of the pole <NUM> is improved.

The pole <NUM> has an end adjacent to the conductive joint <NUM>, and the end has an outer wall provided with a limiting portion, the limiting portion has a first end connected to an outer surface of the pole <NUM> and a second end extending and protruding in a radial direction of the pole <NUM>. That is, the limiting portion is protruding. The limiting portion can be a snap ring <NUM>, the pole <NUM> defines an annular groove (not shown in the drawings) in an outer wall, and the snap ring <NUM> is snapped into the annular groove, such that the pole <NUM> can be mounted to and dismounted from the pole plate <NUM> with a simple structure.

The snap ring <NUM> is located outside the receiving chamber <NUM>, and the snap ring <NUM> abuts an outer surface of the receiving chamber <NUM>. With the snap ring <NUM>, the pole <NUM> can be prevented from falling off the pole plate <NUM>, and the pole <NUM> can be ensured to always run through the two guiding holes. Meanwhile, during movement of the pole <NUM>, the snap ring <NUM> effectively prevents the pole <NUM> move towards the first electrical connecting portion <NUM>, the pole <NUM> and the conductive joint <NUM> cannot be disengaged from each other, and the stability of the electrical connection between the pole <NUM> and the conductive joint <NUM> can be prevented.

The pole <NUM> has another end way from the conductive joint <NUM>, and the another end has an outer wall provided with a protrusion <NUM>, the protrusion <NUM> extends out in the radial direction of the pole <NUM>, and the protrusion <NUM> runs through the guiding hole, that is the protrusion <NUM> is protruding. The pole component <NUM> can include an elastic body (not shown in the drawings), the elastic body is located in the receiving chamber <NUM> and between the snap ring <NUM> and the protrusion <NUM>, and the elastic body has two ends abutting an inner wall of the receiving chamber <NUM> and the protrusion <NUM> respectively. With the elastic body, a force is exerted on the pole <NUM> in the direction along the first electrical connecting portion <NUM>, and the first electrical connecting portion <NUM> can retract under stress upon contact with the electric-connector battery end <NUM>, thereby reducing rigid impact on the first electrical connecting portion <NUM>. The floating connection can be achieved during the electrical connection, desired contact between the first electrical connecting portion <NUM> and electrical connector battery end <NUM> is ensured, and the stability of the electrical connection between the first electrical connecting portion <NUM> and electrical connector battery end <NUM> is greatly improved.

The elastic body can be a reset spring, the pole <NUM> runs through the reset spring. The reset spring has high elasticity and good property, and is easy to restore after removing an external force. Meanwhile, the reset spring exerts a force on the pole <NUM>, such that the pole <NUM> is under uniform force, and offset and malposition of the pole <NUM> can be effectively prevented.

In order to enhance the intensity of connection between the pole <NUM> and the conductive elastic member, the first electrical connecting portion <NUM> can be provided with at least one placing chamber <NUM>, the conductive elastic member has a contact portion and a pressing portion, and the conductive elastic member is mounted in the placing chamber <NUM> by means of the pressing portion, thereby effectively preventing the conductive elastic member from disengaging. The contact portion is exposed out of an outer surface of the first electrical connecting portion <NUM> and can abut on the electrical connector battery end <NUM>, achieving the floating connection of the pole <NUM> and more stable electrical connection. Preferably, the conductive elastic member can be a first conductive spring.

In order to improve safety of the pole component <NUM>, the pole component <NUM> can include an insulating bush <NUM>, the insulating bush <NUM> defines a cavity <NUM> therein, the conductive joint <NUM> is located in the cavity <NUM>. The insulating bush <NUM> protects, insulates, and seals the conductive joint <NUM> well. The insulating bush <NUM> is connected to the pole plate <NUM>, the insulating bush <NUM> and the pole plate <NUM> protect the pole <NUM> and the conductive joint <NUM>, thereby improving safety and reliability of the electrical connector. Preferably, the insulating bush <NUM> is connected to the pole plate <NUM> by snapping, such that the insulating bush <NUM> can be mounted on and dismounted from the pole plate <NUM>.

The insulating bush <NUM> can be provided with a wavy portion <NUM>. With the wavy portion <NUM> on an outer surface of the insulating bush <NUM>, the insulating bush <NUM> has good flexibility, deformability of the insulating bush <NUM> can be improved, and the insulating bush <NUM> can insulate and seal the conductive joint <NUM> in a better way.

As shown in <FIG>, <FIG>, <FIG>, the conductive joint <NUM> further includes a second contact <NUM>, the flexible member <NUM> has two ends connected to the first contact <NUM> and the second contact <NUM> respectively, the conductive joint <NUM> is electrically connected to the pole <NUM> by means of the first contact <NUM>, and is electrically connected to the high-voltage pin <NUM> by means of the second contact <NUM>. The conductive elastic body can be a third conductive spring <NUM>, the third conductive spring <NUM> is pressed between the high-voltage pin <NUM> and the second contact <NUM>, improving stability of electrical connection between the high-voltage pin <NUM> and the conductive joint <NUM>. At least one second conductive spring <NUM> can be pressed between the pole <NUM> and the first contact <NUM>. With the second conductive spring <NUM>, floating connection between the pole <NUM> and the first contact <NUM> is achieved, and stability of the electrical connection between the pole <NUM> and the conductive joint <NUM> is improved.

In order to enhance stability of electrical connection between the pole <NUM> and the conductive joint <NUM> and electrical connection between the conductive joint <NUM> and the high-voltage pin <NUM>, the second electrical connecting portion <NUM> can be provided with the first cavity portion <NUM>, the first contact <NUM> is inserted in the first cavity portion <NUM>, the first contact <NUM> defines at least one first annular spring groove in an outer wall, the second conductive spring <NUM> is pressed in the first annular spring groove, and the second conductive spring <NUM> is pressed between the first cavity portion <NUM> and the first annular spring groove. The second conductive spring <NUM> is effectively pressed and mounted between the pole <NUM> and the conductive joint <NUM>, the electrical connection is more stable. Similarly, the high-voltage pin <NUM> can be connected to the conductive joint <NUM> by means of a socket, the socket has a second cavity portion at each of two ends thereof, and the high-voltage pin <NUM> and the second contact <NUM> are inserted in second cavity portions at the two ends of the socket respectively. The high-voltage pin <NUM> and the second contact <NUM> each define at least one second annular spring groove in outer walls thereof, the third conductive spring <NUM> is pressed in the second annular spring groove, and the third conductive spring <NUM> is pressed between the second cavity portion and the second annular spring groove. Intensity of connection and arrangement of the third conductive spring <NUM> is effectively enhanced, and the electrical connection is more stable.

The flexible member <NUM> includes a cavity body <NUM>, the cavity body <NUM> has two ends connected to the first contact <NUM> and the second contact <NUM> respectively. The cavity body <NUM> is made of flexible material. When the conductive joint <NUM> is employed, the cavity body <NUM> can be stretch and compressed, or twisted in the radial direction, to adapt relative displacement of connection between the conductive joint <NUM> and the pole <NUM>, and relative displacement of connection between the conductive joint <NUM> and the high-voltage pin <NUM> in the axial direction and radial direction, performance of the electrical connection of the conductive joint <NUM> can be prevented from getting worse due to changes of relative displacement, stability of electrical connection of the high-voltage assembly <NUM> is greatly improved. Preferably, the cavity body <NUM> is crimped or welded to the first contact <NUM> and the second contact <NUM>, thereby enhancing intensity of structural connection of the conductive joint <NUM>, and ensuring stability of the electrical connection of the conductive joint <NUM>.

The cavity body <NUM> can be a spherical-like elastic cavity body enclosed by a plurality of flexible conductive bars, the cavity body <NUM> also can be a spherical-like elastic cavity body enclosed by a grid flexible conductive member. The cavity body <NUM> also can be a spherical-like elastic cavity body woven from metal wires or formed by stretching a metal conductive tape.

The flexible member <NUM> further includes a spring <NUM>, the spring <NUM> is located in the cavity body <NUM> and is located between the first contact <NUM> and the second contact <NUM>. The spring <NUM> has two ends connected to the first contact <NUM> and the second contact <NUM> respectively by welding and crimping. With the spring <NUM>, structural strength of the conductive joint <NUM> is effectively enhanced, such that electrical connection of the conductive joint <NUM> can be ensured even relative displacement of two ends the flexible member <NUM> changes. Meanwhile, the spring <NUM> is conductive, which further improves stability of the electrical connection between the first contact <NUM> and the second contact <NUM>.

As shown in <FIG>, an embodiment which does not fall within the subject-matter of the claimed invention is used to charge a replaced battery for an electric vehicle. An electrical connector in the embodiment generally includes a baseplate <NUM> and a floating plate <NUM>. The baseplate <NUM> includes a hollow baseplate mounting opening <NUM>. The floating plate <NUM> is movably mounted on a surface of the baseplate <NUM> by means of an elastic member <NUM>. The floating plate <NUM> is provided with an elastic pole <NUM> for electrical connection.

When the electrical connector is used to charge a battery to be charged, the elastic pole <NUM> is inserted into a charging interface of the battery to be charged, the elastic pole <NUM> can have certain elasticity for stretching out and drawing back after being in contact with the battery to be charged, which enhances a contact effect at a contact point. In addition, the floating plate <NUM> translates relative to the baseplate <NUM> to some extent under the control of the elastic member <NUM> when the floating plate <NUM> is affected by an external force, thereby improving connection of the elastic pole and preventing rigid damage.

Elastic members <NUM> can be symmetrically arranged around the mounting opening <NUM> of the baseplate <NUM>, such that the floating plate <NUM> is under a uniform force. In the example, the elastic pole <NUM> used to bear a pressure perpendicular to the baseplate <NUM>, while the elastic members <NUM> can enable the elastic pole <NUM> to bear a pressure parallel to the baseplate <NUM>, such that the elastic pole is in elastic connection in both a vertical and horizontal direction, enlarging an adaptive range of the electrical connector.

As shown in <FIG>, in an example of the embodiment, the elastic members <NUM> can be mounted as follows.

An edge of the baseplate <NUM> and an edge of the floating plate <NUM> are provided with a holder <NUM> for mounting the elastic member <NUM>, the holder <NUM> includes a first fixing block <NUM> on the baseplate <NUM> around the mounting opening <NUM> and a second fixing block <NUM> on the floating plate <NUM>, and the first fixing block <NUM> corresponds to the second fixing block in position. The elastic member <NUM> has two ends connected to the first fixing block <NUM> and the second fixing block <NUM> respectively and held by them. The whole floating plate <NUM> is held on the baseplate <NUM> by the elastic members <NUM> which are symmetrically arranged.

Specifically, the first fixing block <NUM> and the second fixing block <NUM> can be formed by portions of the baseplate <NUM> and the floating plate <NUM>, and the first fixing block <NUM> is spaced apart from the second fixing block <NUM> at a certain distance to receive the elastic member <NUM>. The elastic member <NUM> in the embodiment can be a spring or an elastic steel roll. In a case that the spring is adopted, the spring can have two ends connected to the first fixing block <NUM> and the second fixing block <NUM>. The first fixing block <NUM> and the second fixing block <NUM> have dimensions smaller than an inner diameter of the spring, such that the spring is fitted over the first and second fixing block. In addition, one of the first fixing block <NUM> and the second fixing block <NUM> can be bent based on a position of the other, such that the first fixing block <NUM> and the second fixing block <NUM> correspond to each other in position and are in the same plane. For easy mounting the elastic member <NUM>, the baseplate <NUM> and the floating plate <NUM> provided with the first fixing block <NUM> and the second fixing block <NUM> can also be provided with corresponding grooves <NUM>.

In an example of the embodiment, in order to make the floating plate <NUM> easily float relative the baseplate <NUM>, the floating plate <NUM> can be provided with a plurality of bumps on a side facing the baseplate <NUM>, such that the floating plate <NUM> can be spaced apart from the baseplate <NUM> at a certain distance.

Furthermore, in an example of the embodiment, the floating plate <NUM> and the baseplate <NUM> can define first fixing holes <NUM>, <NUM> respectively, a guiding member <NUM> is mounted in the first fixing holes <NUM>, <NUM> to limit them together, the guiding member <NUM> includes a guiding sleeve and a guiding screw, the guiding sleeve <NUM> is mounted on the baseplate <NUM>, the guiding screw runs through the floating plate <NUM> to be threadedly connected to the guiding sleeve <NUM>, the guiding sleeve <NUM> located at the baseplate <NUM> has a portion in the first fixing hole <NUM>, and the portion has a diameter less than that of the first fixing hole <NUM>. The guiding sleeve <NUM> has another end outside the first fixing hole, and the another end has a diameter than that of the first fixing hole <NUM>, The guiding screw is connected and fixed to the portion in the first fixing hole of the guiding sleeve <NUM> via an external thread or an internal thread.

The guiding member <NUM> is used to connect the floating plate <NUM> with the baseplate <NUM>, and the floating plate <NUM> can only slide relative to the baseplate <NUM> after being connected, that is, the floating plate can only move within a range of diameters of the first fixing holes <NUM>, <NUM>. In addition, a plurality of first fixing holes <NUM>, <NUM> can be provided and arranged symmetrically around the floating plate <NUM>. In addition, in other embodiment, the guiding member <NUM> may be a rivet.

As shown in <FIG>, in an example of the embodiment, the floating plate <NUM> can define a hollow floating-plate mounting opening <NUM> in a middle portion, a pole mounting plate <NUM> specially for mounting the elastic pole <NUM> is fixed to the mounting opening <NUM>. With the independent pole mounting plate <NUM>, the elastic pole <NUM> can be easily mounted, and the whole electrical connector can be easily dismounted and maintained. A fixed connection can be provided between the pole mounting plate <NUM> and the floating plate <NUM>. For instance, the floating plate <NUM> and the pole mounting plate <NUM> define second fixing holes <NUM>, <NUM> respectively through which a fixing member runs, the baseplate <NUM> defines a receiving hole <NUM> at a position corresponding to the second fixing holes <NUM>, <NUM> for receiving the fixing member. The fixing member herein can be a structure with a screw and a nut. The second fixing holes <NUM>, <NUM> can be arranged at four corners of the pole mounting plate <NUM>. In addition, to avoid that the fixing member affects sliding of the floating plate <NUM> relative to the baseplate <NUM>, the fixing member has a movement range relative to the receiving hole at least equal to those of the first fixing holes <NUM>, <NUM>.

As shown in <FIG>, <FIG>, furthermore, in an example of the embodiment, distance protruding towards the elastic pole <NUM>, the pole mounting plate <NUM> defines a groove retracting towards the boss <NUM> at another side running through the floating plate, a closing plate <NUM> is mounted on a surface of the groove, the closing plate <NUM> and the boss <NUM> define an accommodating space <NUM> for accommodating the elastic pole <NUM>.

In the embodiment, the boss <NUM> can be directly formed on the pole mounting plate <NUM> by stamping, while the closing plate <NUM> can be provided with a snapping boss <NUM> at a side opposite the boss <NUM>, and the snapping boss <NUM> is of a shape the same as that of the accommodating space <NUM>, the closing plate <NUM> is connected to the pole mounting plate <NUM> by snapping after that the snapping boss <NUM> is inserted in the accommodating space <NUM>. The boss <NUM> is more suitable for connection between the elastic pole <NUM> and a charging jack of the battery to be charged.

As shown in <FIG>, in an example of the embodiment, in order to facilitate insertion of the elastic pole <NUM> into the battery to be charged, the pole mounting plate <NUM> can be provided with a positioning column <NUM> for limiting a contact position between the elastic pole <NUM> and the charging jack of the battery to be charged, two positioning columns <NUM> can be mounted at two sides of the boss <NUM>, and the positioning columns <NUM> has a height larger than that of the elastic pole <NUM>. When the electrical connector is in contact with the battery to be charged, the positioning columns <NUM> are firstly inserted in corresponding fixing holes on the battery to be charged, and then the elastic pole <NUM> is inserted in the charging jack of the battery to be charged. The positioning columns <NUM> can also protect the inserted elastic pole from being influenced by a horizontal force.

As shown in <FIG>, in an example of the embodiment, the positioning columns <NUM> has a first end (such as a threaded end <NUM> having an external thread) by which the positioning columns <NUM> can be fixedly connected to the pole mounting plate <NUM>, and a second end configured as a taper end <NUM> for easy insertion, a baffle <NUM> projecting from a pole body can be provided between two ends, and the baffle <NUM> can limit a length by which the positioning columns <NUM> is screwed in.

As shown in <FIG>, in an example of the embodiment, the elastic pole <NUM> can include the pole body <NUM> and the spring <NUM>, the elastic pole <NUM> is mounted on the pole mounting plate, and the pole mounting plate defines a mounting hole through which the elastic pole <NUM> passes.

The pole body <NUM> has a first end, an electrical contact terminal <NUM>, in contact with the battery, and a second end, a cable connecting terminal <NUM>, for connection with a supply line. The pole body <NUM> defines an annular groove <NUM> in an outer surface. The electrical contact terminal <NUM> can be flat for increasing a contact area. The annular groove <NUM> can be used to mount a limiting member, such that the elastic pole <NUM> is mounted on the pole mounting plate in limiting manner. The limiting member is a snap ring, the snap ring has an outer diameter larger than that of the pole body at a portion inserted into the annular grooves1213, such that the spring is limited on the pole body, and the spring cooperates with the snap ring to floatingly mount the pole body on the pole mounting seat.

The spring <NUM> is fitted over an outer surface of the pole body <NUM> and limited in a mounting hole of the pole mounting plate after mounting. The spring generates an elastic force in a direction opposite a pressing direction when the contact terminal <NUM> of the pole body <NUM> is pressed, In the example, the pole body <NUM> is movably mounted on the pole mounting plate and cannot leave a mounting position under limit by the limiting member snapped into the annular groove <NUM>, Meanwhile, the spring <NUM> always exerts an elastic force on the pole body <NUM> for maintaining a current state with cooperation with the pole mounting seat. When in contact with a charging jack of the battery to be charged, the pole body <NUM> can retract under stress, thereby achieving good contact effect with reduction in rigid impact.

In an example of the embodiment, the cable connecting terminal <NUM> can define a cable clamping groove <NUM> extending in an axis of the pole body <NUM> for easily mounting a charging cable. The charging cable can be inserted into the cable clamping groove <NUM> and connected to a corresponding pole body <NUM>.

In an example of the embodiment, the limiting member snapped into the annular groove <NUM> can be a C-shaped snap ring <NUM> having an opening, the snap ring <NUM> has an outer diameter larger than a diameter of the pole body <NUM> and an inner diameter equal to that of the annular groove <NUM>. When the snap ring <NUM> is snapped into a corresponding annular groove <NUM>, the end of the pole body <NUM> on which the snap ring <NUM> is mounted cannot escape from another end of the mounting hole.

As shown in <FIG>, in an example of the embodiment, a high-voltage pole <NUM> and a low-voltage pole <NUM> are mounted on the boss <NUM>. A plurality of low-voltage poles <NUM> are provided, and two high-voltage poles are arranged at two sides of the low-voltage pole.

In an example of the embodiment, the boss <NUM> can define a high-voltage mounting hole <NUM> with a step, the high-voltage pole <NUM> is of a shape corresponding to that of the high-voltage mounting hole <NUM> and the high-voltage pole <NUM> can be inserted into the high-voltage mounting hole <NUM>, the inserted high-voltage pole <NUM> is limited in the high-voltage mounting hole <NUM> by the spring <NUM> and the snap ring <NUM> locked in the annular grooves <NUM>.

As shown in <FIG>, a specific mounting structure can be as follows, the high-voltage mounting hole <NUM> includes a first mounting segment <NUM> and a second mounting segment <NUM>, and the second mounting segment <NUM> has a diameter smaller than that of the first mounting segment <NUM>, a diameter of the pole body with the electrical contact terminal of the high-voltage pole <NUM> is larger than that of the pole body with the cable connecting terminal. The pole body at the cable connecting terminal is a diameter-reducing segment <NUM>, and the pole body at the electrical contact terminal is a diameter-constant segment <NUM>. After the high-voltage pole <NUM> is inserted in the high-voltage mounting hole <NUM>, the diameter-constant segment <NUM> corresponds to the first mounting segment <NUM>, the diameter-reducing segment <NUM> corresponds to the second mounting segment <NUM>, and the diameter-reducing segment <NUM> has its end exposed outside after being inserted in the second mounting segment <NUM>. The annular groove <NUM> is arranged at the exposed end of the cable connecting terminal, and the spring <NUM> is fitted over the diameter-reducing segment <NUM> located in the high-voltage mounting hole and limited in the first mounting segment <NUM> by the second mounting segment <NUM> and the diameter-constant segment <NUM> in a compressed state. The high-voltage pole <NUM> moves to the outside of the high-voltage mounting hole <NUM> under elasticity of the spring <NUM>, but is stopped by the snap ring <NUM> locked in the annular groove <NUM>. When the high-voltage pole <NUM> is under a pressure in a vertical direction, the diameter-constant segment <NUM> thereof moves in the first mounting segment <NUM> to press the spring <NUM>.

As shown in <FIG>, in an example of the embodiment, the boss <NUM> of the pole mounting plate <NUM> and the closing plate <NUM> define a low-voltage mounting hole <NUM> with a constant diameter at corresponding positions, the electrical contact terminal and the cable connecting terminal of the low-voltage pole <NUM> run through the boss <NUM> and the closing plate <NUM> respectively, the spring <NUM> is mounted on the pole body of the low-voltage pole <NUM> located in the low-voltage mounting hole <NUM>, the low-voltage pole <NUM> defines two annular grooves <NUM> at an end of the low-voltage pole <NUM> running through the closing plate <NUM> and the pole body located in the low-voltage mounting hole <NUM>.

In the embodiment, the low-voltage pole <NUM> is a cylinder having a constant diameter. The low-voltage mounting hole <NUM> has a constant diameter at the boss <NUM> and the closing plate <NUM>. When the low-voltage pole <NUM> is inserted into the low-voltage mounting hole <NUM> at the boss <NUM> and the closing plate <NUM>, the corresponding snap ring <NUM> is snapped in the annular grooves <NUM> exposed from an end of the closing plate <NUM> to prevent the low-voltage pole <NUM> from escaping in a direction of the boss <NUM>, while after another snap ring <NUM> is snapped into the annular grooves <NUM> located in the mounting hole <NUM>, the spring located between the closing plate <NUM> and the snap ring <NUM> can be clamped, the spring <NUM> can enable the low-voltage pole <NUM> to bear a certain vertical pressure and keep the low-voltage pole <NUM> expose from the boss <NUM> by means of a pressure from the closing plate <NUM>.

In an example of the embodiment, two high-voltage poles <NUM> can be provided and arranged at two ends of the boss <NUM>, and a plurality of low-voltage poles <NUM> can be provided and arranged between the two high-voltage poles <NUM>. For instance, in the embodiment, an upper row of seven low-voltage poles <NUM>, a middle row of six low-voltage poles <NUM>, and a lower row of seven low-voltage poles <NUM>, are provided.

As shown in <FIG>, <FIG>, a battery charging board <NUM> for an electric vehicle provided by an embodiment which does not fall within the subject-matter of the claimed invention and generally includes an upper frame assembly <NUM>, a lower frame assembly <NUM> and a floating charging plate <NUM>.

The upper frame assembly <NUM> is used to place a battery to be charged and includes an upper frame <NUM> supporting the battery. The lower frame assembly <NUM> is used to elastically support the upper frame <NUM>, the lower frame assembly <NUM> includes a lower frame <NUM> and an elastic device <NUM> arranged on an upper surface of the lower frame <NUM>. With the elastic device <NUM>, the upper frame <NUM> can move downwards at a specified distance under the action of a gravity of the battery after the battery is in position. The floating charging plate <NUM> is used to charge the battery and mounted on an end at an upper surface of the upper frame <NUM>, the floating charging plate <NUM> includes a mounting seat <NUM> which is movably connected to the upper frame <NUM> and the lower frame <NUM>, and a floating electrical connector <NUM> which is mounted on the mounting seat <NUM> to be in contact with the battery through insertion. The mounting seat <NUM> can move along with the upper frame <NUM> when the upper frame <NUM> moves downwards, such that the floating electrical connector <NUM> is automatically connected to the battery in position through downward movement.

In the embodiment, with the interconnected upper frame assembly, lower frame assembly and floating charging plate, the battery can automatically move to charge after placement, insertion connection between the floating charging plate and the battery to be charged can be achieved automatically by means of cooperation among the interacting three during movement, such that the battery to be charged can be charged automatically. With the embodiment, the battery for an electric vehicle can be automatically charged completely without manual work, automatic processing during the whole charging period can be improved, and the charging efficiency can be increased.

In an example of the embodiment, a specific elastic device <NUM> can be a hydraulic, pneumatic, or an electric control device, which enables the upper frame <NUM> to move to a designated location after the battery is placed. In another embodiment of the present disclosure, the elastic device <NUM> can further be a compression spring <NUM>, the battery can be moved downwards to the designated location by choosing relation between an elasticity of the spring <NUM> and a weight of the battery.

Furthermore, in an example of the embodiment, in the case that the elastic device <NUM> is the spring, each of a lower surface of the upper frame <NUM> and an upper surface of the lower frame <NUM> can be provided with a fixing cartridge <NUM> for mounting and limiting the spring <NUM>, the compression spring <NUM> has two ends mounted in two fixing cartridges <NUM> respectively. The fixing cartridges <NUM> can prevent the upper frame <NUM> from being disengaged from connection with the spring <NUM>.

As shown in <FIG>, in an example of the embodiment, for easy placement of the battery, a supporting plate <NUM> can be mounted above the upper frame assembly <NUM> for limiting movement of the battery. The supporting plate <NUM> is movably placed on an upper surface of the upper frame <NUM>, and the supporting plate <NUM> can define a through hole. A specific placement can be as follows, the supporting plate <NUM> is provided with two parallel L-shaped right-angle mounting bars <NUM> at a lower surface, the upper frame assembly <NUM> is provided with a step snapping plate <NUM> at an upper surface, each of the right-angle mounting bars <NUM> is fixed to a lower surface of the supporting plate <NUM> by means of one right-angle side with the other right-angle side parallel to the supporting plate <NUM>, and directions of the two right-angle mounting bars <NUM> are opposite.

The snapping plate <NUM> has a stage of a height equal to that of the right-angle mounting bars <NUM>. After placement, the supporting plate <NUM> is locked on the snapping plate <NUM> by means of the right-angle mounting bars <NUM>, each of the two right-angle mounting bars <NUM> is put on the corresponding stage of the snapping plate <NUM> by means of one right-angle side, the supporting plate <NUM> can be prevented from lateral movement, a direction of the limited movement corresponds to that of movement of the floating charging plate <NUM>, a fault of connection between the battery and the floating electrical connector <NUM> can be prevented during downwards movement of the battery.

In an example of the embodiment, in order to prevent the battery from moving during charging, a limiting device <NUM> can be provided between the upper frame <NUM> and the lower frame <NUM> for limiting movement of the upper frame <NUM> relative to the lower frame after placement of the battery.

In an example of the embodiment, the limiting device <NUM> can include a taper positioning rod <NUM> arranged on a lower surface of the upper frame <NUM> and a taper positioning base <NUM> arranged on an upper surface of the lower frame <NUM> and corresponding to the taper positioning rod <NUM> in position. When the battery presses the upper frame <NUM> down, the taper positioning rod <NUM> at a bottom of the upper frame <NUM> can be inserted into the taper positioning base <NUM> at a top of the lower frame <NUM>, thereby preventing the upper frame <NUM> from moving during charging. A plurality of taper positioning rods <NUM> can be arranged on the lower surface of the upper frame, and a plurality of taper positioning bases <NUM> can be arranged on the upper surface of the lower frame.

In an example of the embodiment, in order to prevent the upper frame <NUM> from getting out of control under the elastic device <NUM> and to limit a moving direction of the upper frame <NUM>, the lower frame assembly <NUM> can be provided with a limiting device <NUM> for limiting a downward moving track of the upper frame assembly <NUM>, and the limiting device <NUM> can also limit a range of up-down movement of the upper frame <NUM>. The limiting device <NUM> includes a limiting plate <NUM> mounted on the lower frame <NUM> and having a longitudinal sliding groove <NUM>, and a limiting rod <NUM> arranged on the upper frame <NUM> and inserted in the longitudinal sliding groove <NUM>.

The limiting plate <NUM> surrounds the lower frame <NUM>, the longitudinal sliding groove <NUM> in the limiting plate is perpendicular to the lower frame <NUM>, the limiting rod <NUM> of the upper frame <NUM> is arranged at a position corresponding to the limiting plate <NUM> and inserted into the longitudinal sliding groove <NUM>. When no battery is placed on the upper frame <NUM>, the upper frame <NUM> is jacked up by the elastic device <NUM>, the limiting rod <NUM> is located at a top end of the longitudinal sliding groove <NUM>. When the battery is placed on the upper frame <NUM>, the upper frame <NUM> can only move along the longitudinal sliding groove <NUM> because the longitudinal sliding groove <NUM> limits the limiting rod <NUM>, such that the moving direction of the upper frame <NUM> is limited, a plurality of limiting plates can be arranged at an edge of the upper frame to improve a limiting effect. In addition, the limiting effect of the limiting device <NUM> and the connection effect of the floating charging plate <NUM> can be improved by means of the embodiment.

In an example of the embodiment, in order to enable the mounting seat <NUM> to act synchronously with the upper frame <NUM> and reach a designated position, the mounting seat <NUM> can be connected to the upper frame <NUM> by means of a slide rail device <NUM> and connected to the lower frame <NUM> by means of an orienting device <NUM>. The slide rail device <NUM> is used to limit movement, towards the battery along the upper frame, of the mounting seat <NUM> when the mounting seat <NUM> is pressed down by the upper frame <NUM>, the movement can allow the floating electrical connector <NUM> on the mounting seat <NUM> to automatically make electrical contact with the lowered battery. A positioning device <NUM> is used to guide the floating charging plate to move along with the battery and corresponding to an electrical connection mechanism on a surface of the battery.

In an example of the embodiment, a specific slide rail device <NUM> is provided. The slide rail device <NUM> can include a sliding block <NUM> mounted on a lower surface of the mounting seat <NUM> and having a snapping groove and a slide rail <NUM> mounted on an end of the upper frame <NUM>. The snapping groove of sliding block <NUM> is snapped into the slide rail <NUM>, such that the mounting seat <NUM> is slidingly connected to the upper frame <NUM>, when the upper frame <NUM> is lowered, the slide rail <NUM> exerts a force pulling the sliding block <NUM> downwards, such that the mounting seat <NUM> moves along the slide rail <NUM> under limit of the orienting device <NUM>. When the mounting seat <NUM> moves to another end of the slide rail <NUM>, the floating electrical connector <NUM> is connected to the battery on the upper frame <NUM> via insertion.

An example of the embodiment provide an orienting device <NUM>, the orienting device <NUM> includes a pulley base <NUM> arranged on a lower surface of the mounting seat <NUM> and having a pulley <NUM>, and an orientation limiting base <NUM> mounted on an upper surface of the lower frame <NUM> and having an oblique groove <NUM>, the oblique groove <NUM> inclines in a direction the same as that of the slide rail <NUM>. The pulley base <NUM> can be two parallel plates, while the pulley <NUM> is perpendicularly connected between the two plates. When the mounting seat <NUM> synchronously moves along with the upper frame <NUM> and is lowered, the pulley <NUM> moves along the oblique groove <NUM> of the orientation limiting base <NUM>, an angle of inclination of the oblique groove <NUM> is the same as a sliding and downwards movement track of the mounting seat <NUM>, and the movement of the mounting seat <NUM> can be made not to diverge an insertion track with the battery.

Claim 1:
A pole component (<NUM>) for a high-voltage assembly for charging electric vehicles, comprising: a pole (<NUM>), a conductive joint (<NUM>), and at least one conductive elastic member for achieving a floating connection between the pole (<NUM>) and an electrical connector battery end (<NUM>),
wherein the pole (<NUM>) has two ends provided with a first electrical connecting portion (<NUM>) and a second electrical connecting portion (<NUM>) respectively, the first electrical connecting portion (<NUM>) is electrically connected to the conductive elastic member,
the conductive joint (<NUM>) comprises a flexible member (<NUM>) and a first contact (<NUM>), and the first contact (<NUM>) has a first end connected to the flexible member (<NUM>) and a second end electrically connected to the second electrical connecting portion (<NUM>);
the conductive joint (<NUM>) further comprises a second contact (<NUM>) for connecting a high-voltage pin (<NUM>), and the flexible member (<NUM>) has two ends connected to the first contact (<NUM>) and the second contact (<NUM>) respectively;
characterized in that the flexible member (<NUM>) comprises a cavity body (<NUM>) made of a flexible conductive material and having two ends connected to the first contact (<NUM>) and the second contact (<NUM>) respectively, and
the flexible member (<NUM>) further comprises a conductive spring (<NUM>) located in the cavity body (<NUM>) and connected to the first contact (<NUM>) and the second contact (<NUM>).