Power distribution module, battery and vehicle

Abstract

The utility model discloses a power distribution module, battery and vehicle, including shell, electrical device and connecting piece, electrical device is provided in the shell, connecting piece is electrically connected with electrical device, connecting piece is provided in the shell, and at least part of connecting piece is exposed relative to the shell to form heat conduction area. The power distribution module disclosed by the utility model is high in overall integration level and has relatively good heat dissipation performance, and the condition that the temperature is too high during operation is avoided.

Description

Technical Field

[0001] The present disclosure relates to the field of battery technology, and in particular, to a power distribution module, a battery and a vehicle. Background Art

[0002] In recent years, with the rise of new energy vehicles, power batteries, as the power source of new energy vehicles, have also developed rapidly. Power batteries are usually equipped with high-voltage distribution boxes for distributing high-voltage currents, but existing high-voltage distribution boxes have problems such as low integration and poor heat dissipation. Utility Model Content

[0003] The present disclosure aims to solve one of the technical problems in the related art at least to some extent.

[0004] To this end, the embodiments of the present disclosure provide a power distribution module, which has high overall integration and good heat dissipation effect.

[0005] The disclosed embodiment also provides a battery including the above-mentioned power distribution module.

[0006] The disclosed embodiment also provides a vehicle including the battery.

[0007] The power distribution module of the embodiment of the present disclosure includes:

[0008] case;

[0009] An electrical component, wherein the electrical component is disposed in the housing;

[0010] A connecting piece is electrically connected to the electrical device, the connecting piece is arranged in the shell, and at least a part of the connecting piece is exposed relative to the shell to form a heat conduction area.

[0011] In some embodiments, an insulating layer is included, and the insulating layer covers the heat conducting area.

[0012] In some embodiments, a heat-conducting layer is included, and the heat-conducting layer is disposed on a side of the insulating layer facing away from the housing.

[0013] In some embodiments, at least part of the connector is integrally injection molded with the housing.

[0014] In some embodiments, the shell has an opening and a shell bottom wall arranged opposite to the opening, the electrical device is arranged in the shell through the opening, at least part of the connecting member is arranged in the shell bottom wall, and at least part of the connecting member is exposed relative to the shell bottom wall to form the heat conduction zone.

[0015] In some embodiments, the connecting member includes a plate body and a column body, the plate body and the shell bottom wall are integrally injection molded, the column body is located in the shell body and extends along the direction from the opening to the shell bottom wall, and the plate body is exposed from the shell bottom wall and forms the heat conduction area.

[0016] In some embodiments, the electrical device includes a relay, which is assembled in the housing. The power distribution module also includes a power distribution mainboard, which is arranged at the opening of the housing and is electrically connected to the relay. The column is connected between the power distribution mainboard and the board body, and the board body is electrically connected to the relay.

[0017] In some embodiments, the column is connected to the power distribution mainboard via a fastener, and an assembly hole for inserting the fastener is provided in the column.

[0018] In some embodiments, the power distribution main board includes a plurality of connecting plates, and the plurality of connecting plates are arranged at intervals along the circumference of the power distribution main board. The connecting member is provided with a plurality of the columns, and at least some of the columns are connected to the plurality of connecting plates one by one, and the connection points between some of the columns and the connecting plates are used to form circuit sampling points, and the connection points between some of the columns and the connecting plates are used to output current to the outside.

[0019] The battery of the embodiment of the present disclosure includes a power distribution module as described in any of the above embodiments.

[0020] In some embodiments, a management control module is included, the management control module includes a management control system and / or a charging controller, and the management control module includes a control mainboard, and the control mainboard is electrically connected to the power distribution mainboard of the power distribution module.

[0021] In some embodiments, a base plate is included, the power distribution module and the management control module are both arranged on the base plate, and the base plate is used to conduct heat with the heat conduction area and realize cooling of the power distribution module.

[0022] In some embodiments, a channel is provided in the bottom plate, the channel is used for circulating a cooling liquid, the cooling liquid is used to cool the heat transfer area, and the channel is connected to an interface for introducing the cooling liquid into the channel.

[0023] The vehicle of the embodiment of the present disclosure includes a battery as described in any of the above embodiments.

[0024] Beneficial effects: The power distribution module and the battery and vehicle including the power distribution module of the embodiments of the present disclosure have high overall integration of the power distribution module and good heat dissipation performance, thereby avoiding the situation of excessive temperature during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an exploded schematic diagram of the housing and connectors of the power distribution module of the embodiment of the present disclosure.

[0026] Figure 2 It is a bottom schematic diagram of the integrated shell and connectors of the power distribution module of the embodiment of the present disclosure.

[0027] Figure 3 It is a schematic longitudinal cross-sectional view of a partial structure of a power distribution module according to an embodiment of the present disclosure.

[0028] Figure 4 It is a schematic diagram of the overall structure of the power distribution module of an embodiment of the present disclosure.

[0029] Figure 5 This is a schematic diagram of a partial structure of a battery in an embodiment of the present disclosure. Figure 1 .

[0030] Figure 6 This is a schematic diagram of a partial structure of a battery in an embodiment of the present disclosure. Figure 2 .

[0031] Reference numerals:

[0032] Power distribution module 100;

[0033] Shell 11; opening 111; shell bottom wall 112;

[0034] Connecting member 12; plate 121; column 122;

[0035] Insulation layer 13;

[0036] Heat conducting layer 14;

[0037] Power distribution main board 15; connecting piece 151;

[0038] Electrical device 16;

[0039] Management control module 200;

[0040] Control main board 21;

[0041] Adapter cable 300;

[0042] Base plate 400;

[0043] Interface 500;

[0044] Cover body 600. DETAILED DESCRIPTION

[0045] Embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, but should not be understood as limiting the present disclosure.

[0046] like Figure 1 As shown, the power distribution module 100 of the embodiment of the present disclosure includes a housing 11, a connector 12 and an electrical device 16. The power distribution module 100 may be a high voltage distribution box (BDU). In some examples, the housing 11 may be made of plastic, and during processing, the housing 11 may be processed and formed by injection molding.

[0047] The electrical device 16 is assembled in the housing 11. For example, the electrical device 16 can be directly placed in the housing 11, or the electrical device 16 can be inserted and assembled in the housing through a slot, hole, or other structure in the housing. Figure 2 As shown, part of the connector 12 is exposed outside the housing 11 and forms a heat transfer zone. For example, during injection molding, the bottom surface of the connector 12 can be flush with the bottom surface of the housing 11, that is, these surfaces will not be covered by the injection liquid during injection molding. After the injection liquid solidifies, these exposed surfaces form a heat transfer zone. Alternatively, the housing 11 is formed with a hole, and the connector 12 is set at the position of the hole. Part of the connector 12 is exposed through the hole to form a heat transfer zone. The connector 12 can be fixedly connected to the housing by riveting, bolts, etc.

[0048] It is understandable that the heat transfer area can be located on any surface of the housing 11, for example, it can be located on the bottom surface, top surface or side surface of the housing 11, which can be determined according to actual installation conditions.

[0049] When assembling the power distribution module 100 , the electrical device 16 can be electrically connected to the connector 12 , so that power can be supplied to the electrical device 16 by means of the connector 12 , and the collection and use needs of the electrical device 16 can also be realized through the connector 12 .

[0050] The heat conduction zone can be connected to a heat conduction plate, a liquid cooling plate, etc., which can be a direct connection or an indirect connection, so that the heat on the connector 12 can be conducted outward through the heat conduction zone, thereby achieving rapid heat dissipation of the connector 12, avoiding the situation where the temperature of the connector 12 is too high when current passes through the connector 12.

[0051] In the power distribution module 100 of the disclosed embodiment, part of the surface of the connector 12 is directly exposed to the outside and forms a heat conduction zone. The heat on the connector 12 can be quickly dissipated through the heat conduction zone, avoiding heat accumulation, thereby improving the heat dissipation performance of the connector 12 and avoiding the connector 12 from overheating when high voltage current passes through it for a long time.

[0052] In some embodiments, the power distribution module 100 includes an insulating layer 13, which is insulated and disposed on the bottom side of the housing 11, and the insulating layer 13 covers the heat transfer area. The insulating layer 13 can be an insulating material, for example, the insulating layer 13 can be a layer of insulating film, and the material of the insulating film can be polyimide, polyethylene, polyvinylidene fluoride, polytetrafluoroethylene, etc.

[0053] like Figure 4 As shown, the insulating film can be laid on the bottom side of the shell 11. The insulating film can shield and cover the heat conduction area. The insulating film can play an insulating protection effect, avoid leakage, and improve the safety of use.

[0054] In some embodiments, the power distribution module 100 includes a heat-conducting layer 14, which is disposed on the bottom side of the insulating layer 13, and both the insulating layer 13 and the heat-conducting layer 14 have thermal conductivity. Figure 4 As shown, the heat-conducting layer 14 can be made of a material such as a heat-conducting adhesive. After the insulating film is laid, the heat-conducting layer 14 can be laid on the lower side of the insulating film. When in use, the heat on the connector 12 can be transferred to the insulating layer 13 and the heat-conducting layer 14 in sequence through the heat-conducting area, thereby ensuring a good heat dissipation effect while having good insulation protection.

[0055] In some embodiments, at least part of the connector 12 is integrally injection molded with the housing 11. For example, during processing, the connector 12 can be first placed in a corresponding mold, and then a liquid injection molding liquid can be poured into the mold. After the injection molding liquid solidifies, the housing 11 can be formed, and the connector 12 is integrally fixed to the housing 11. The material of the connector 12 can be aluminum, aluminum alloy, etc., so that the connector 12 has thermal conductivity and electrical conductivity, thereby meeting the needs of actual use.

[0056] The connector 12 is integrally injection molded with the shell 11, which avoids the situation in the prior art where the assembly space of the connector 12 and the shell 11 needs to be considered when the shell 11 and the connector 12 are arranged separately. The connector 12 can utilize the space inside the shell wall of the shell 11, thereby improving the overall integration and space utilization.

[0057] In some embodiments, the shell 11 has an opening 111 and a shell bottom wall 112 arranged opposite to the opening 111. For example, the shell 11 as a whole can be a box-shaped structure, the opening 111 can be arranged on the top side of the shell 11, and the shell bottom wall 112 is the shell wall of the shell 11 located on the bottom side.

[0058] The electrical component 16 is disposed in the housing 11 through the opening 111, at least a portion of the connector 12 is disposed in the housing bottom wall 112, and at least a portion of the connector 12 is exposed relative to the housing bottom wall 112 to form a heat conduction zone. Specifically, the electrical component 16 can be directly placed or plugged into the housing 11 from the opening 111, a portion of the connector 12 can be embedded or integrally formed in the housing bottom wall 112, and a portion of the surface of the connector 12 can be exposed from the housing bottom wall 112, and the exposed portion of the connector 12 forms the heat conduction zone.

[0059] In some embodiments, the connector 12 includes a plate 121 and a column 122. The plate 121 and the shell bottom wall 112 are injection molded. The column 122 is located in the shell 11 and extends in a direction from the opening 111 to the shell bottom wall 112. The plate 121 is exposed from the shell bottom wall 112 to form a heat conduction area.

[0060] For example, Figure 1 As shown, the plate body 121 can be strip-shaped, the column 122 can be cylindrical, the column 122 can be integrally formed with the plate body 121, and the column 122 can be located on the top side of the plate body 121. During processing, only the plate body 121 and the shell bottom wall 112 of the shell 11 can be injection molded as a whole, and the column 122 can be located in the shell 11 and can extend in the up and down directions.

[0061] Thus, the injection molding position of the connector 12 can be located at the bottom of the housing 11, which facilitates the one-piece injection molding process and is also conducive to simplifying the processing technology. The column 122 can be used to electrically connect the connector 12 with other components, and because the column 122 is located in the housing 11, the housing 11 can play a protective role.

[0062] It should be noted that the connector 12 may include a plurality of sub-rows, each of which may include a plate 121 and a column 122. During assembly, each sub-row may be connected between two electrical components, thereby achieving electrical connection between the corresponding two electrical components. Figure 3 As shown, at least a portion of the bottom surface of each sub-row may be exposed from the shell bottom wall 112 to form a heat conduction area.

[0063] In some embodiments, the electrical device 16 of the distribution module may include a relay, which is assembled in the shell 11. The distribution module 100 also includes a distribution main board 15, which is arranged at the opening 111 of the shell 11 and is electrically connected to the relay. The column 122 is connected between the distribution main board 15 and the board body 121, and the board body 121 is electrically connected to the relay.

[0064] For example, Figure 4 As shown, the housing 11 may be provided with a plurality of slots, the notches of the plurality of slots may all be arranged upward, and a plurality of relays may also be provided, and the plurality of relays may be inserted into the plurality of slots one by one. The power distribution mainboard 15 is a PCB board, and the power distribution mainboard 15 is arranged on the top side of the housing 11. The relay may be directly connected to the power distribution mainboard 15 by welding, and the top of each column 122 on the above-mentioned connecting member 12 may also be directly connected to the power distribution mainboard 15, so that the corresponding board 121 is also electrically connected to the relay. When in use, the power distribution mainboard 15 may perform operations such as high-voltage sampling and supplying power to the relay.

[0065] In some embodiments, the column 122 is connected to the power distribution mainboard 15 through a fastener, and an assembly hole for inserting the fastener is provided in the column 122. The fastener may be a bolt, and a threaded hole may be provided in the column 122. When assembling, the fastener may be passed through the power distribution mainboard 15 from above and threadedly assembled in the assembly hole of the column 122, thereby facilitating installation and disassembly.

[0066] In some embodiments, the distribution main board 15 includes a plurality of connecting plates 151, which are arranged at intervals along the circumference of the distribution main board 15, and the connecting member 12 is provided with a plurality of columns 122, at least some of the columns 122 are connected to the plurality of connecting plates 151 one by one, and the connection points between some of the columns 122 and the connecting plates 151 are used to form circuit sampling points, and the connection points between some of the columns 122 and the connecting plates 151 are used to output current to the outside.

[0067] For example, Figure 4 As shown, four connecting plates 151 can be provided on the power distribution main board 15, wherein two connecting plates 151 can be located on the left side of the power distribution main board 15 and arranged side by side along the front-to-back direction, and the two connecting plates 151 are connected and fixed to the corresponding two columns 122 by fasteners, and the connection between the two connecting plates 151 and the corresponding columns 122 can form a sampling point for high-voltage sampling.

[0068] The other two connecting pieces 151 can be arranged on the rear side of the power distribution main board 15. The two connecting pieces 151 can be arranged side by side in the left-right direction, and the two connecting pieces 151 can also be connected and fixed with the corresponding two columns 122 by fasteners. When in use, the connection between the two connecting pieces 151 and the corresponding columns 122 can be connected to the external electrical interface, so as to realize the use needs of external power supply.

[0069] The following describes a battery according to an embodiment of the present disclosure.

[0070] The battery of the embodiment of the present disclosure includes a power distribution module 100 , and the power distribution module may be the power distribution module 100 described in any of the above embodiments.

[0071] In some embodiments, Figure 5 As shown, the battery includes a management control module 200, and the management control module 200 includes a management control system (BMS) and / or a charging controller (CCU). For example, the management control module 200 may include both the management control system and the charging controller. In some other embodiments, it may include only one of them.

[0072] like Figure 5As shown, the management control module 200 includes a control mainboard 21, which can also be a PCB board. The control mainboard 21 can be located on the right side of the power distribution mainboard 15, and the control mainboard 21 is electrically connected to the power distribution mainboard 15 of the power distribution module 100. For example, the power distribution mainboard 15 and the control mainboard 21 can be connected through an adapter cable 300. At this time, both the power distribution mainboard 15 and the control mainboard 21 can be provided with an adapter connector for plugging the end of the adapter cable 300.

[0073] In some embodiments, the battery includes a base plate 400 , the power distribution module 100 and the management control module 200 are both disposed on the base plate 400 , and the base plate 400 is used for heat conduction with the heat conduction area and cooling the power distribution module 100 .

[0074] For example, Figure 5 and Figure 6 As shown, the bottom plate 400 may be an aluminum alloy plate, and the bottom plate 400 may be substantially rectangular. The power distribution module 100 and the management control module 200 may be installed on the top side of the bottom plate 400. The heat conduction area of ​​the connector 12 of the power distribution module 100 may be arranged toward the bottom plate 400, and the insulating layer 13 and the heat conduction layer 14 may be sandwiched between the heat conduction area and the bottom plate 400. When in use, the heat on the connector 12 may be sequentially conducted to the insulating layer 13 and the heat conduction layer 14 via the heat conduction area, and finally conducted to the bottom plate 400, and then the heat may be quickly dissipated through the bottom plate 400.

[0075] In some embodiments, the bottom plate 400 is provided with a channel for circulating a cooling liquid, the cooling liquid is used to cool the heat transfer area, and the channel is connected to an interface 500 for introducing the cooling liquid into the channel. For example, the bottom plate 400 may be a liquid cooling plate, and the channel may be bent and extended in the bottom plate 400, such as Figure 5 and Figure 6 As shown, an interface 500 can be connected to the inlet and outlet of the channel. When in use, the circulation of the coolant in the channel can be achieved through the corresponding interface 500, thereby achieving active cooling of the power distribution module 100 and the management control module 200.

[0076] In some embodiments, Figure 6 As shown, the battery further includes a cover 600 , which can be disposed above the power distribution module 100 and the management control module 200 , and the cover 600 can achieve a shielding and protective effect.

[0077] The following describes a vehicle according to an embodiment of the present disclosure.

[0078] The vehicle of the embodiment of the present disclosure includes a battery, which may be a battery as described in any of the above embodiments. The vehicle may be a new energy vehicle, specifically a sedan, SUV, bus, etc., or other vehicles that require a battery.

[0079] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present disclosure. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present disclosure.

Claims

1. A power distribution module, characterized in that: include: case; An electrical component, wherein the electrical component is disposed in the housing; A connecting piece is electrically connected to the electrical device, the connecting piece is arranged in the shell, and at least a part of the connecting piece is exposed relative to the shell to form a heat conduction area.

2. The power distribution module according to claim 1, characterized in that: An insulating layer is included, and the insulating layer covers the heat conduction area.

3. The power distribution module according to claim 2, characterized in that: A heat-conducting layer is included, and the heat-conducting layer is arranged on a side of the insulating layer away from the shell.

4. The power distribution module according to claim 1, characterized in that: At least part of the connecting member is integrally injection-molded with the housing.

5. The power distribution module according to any one of claims 1 to 4, characterized in that: The shell has an opening and a shell bottom wall arranged opposite to the opening, the electrical device is arranged in the shell through the opening, at least part of the connecting member is arranged in the shell bottom wall, and at least part of the connecting member is exposed relative to the shell bottom wall to form the heat conduction area.

6. The power distribution module according to claim 5, characterized in that: The connecting member includes a plate body and a column body, wherein the plate body and the shell bottom wall are integrally injection molded, the column body is located in the shell body and extends along the direction from the opening to the shell bottom wall, and the plate body is exposed from the shell bottom wall to form the heat conduction area.

7. The power distribution module according to claim 6, characterized in that: The electrical device includes a relay, which is assembled in the shell. The power distribution module also includes a power distribution mainboard, which is arranged at the opening of the shell and is electrically connected to the relay. The column is connected between the power distribution mainboard and the board body, and the board body is electrically connected to the relay.

8. The power distribution module according to claim 7, characterized in that: The column is connected to the power distribution mainboard via a fastener, and an assembly hole for inserting the fastener is provided in the column.

9. The power distribution module according to claim 7, characterized in that: The power distribution mainboard includes a plurality of connecting plates, which are arranged at intervals along the circumference of the power distribution mainboard. The connecting member is provided with a plurality of columns, at least some of the columns are connected to the plurality of connecting plates in a one-to-one correspondence, and the connection points between some of the columns and the connecting plates are used to form circuit sampling points, and the connection points between some of the columns and the connecting plates are used to output current to the outside.

10. A battery, characterized in that: It comprises a power distribution module as described in any one of claims 1 to 9 above.

11. The battery according to claim 10, characterized in that It includes a management control module, which includes a management control system and / or a charging controller, and the management control module includes a control mainboard, which is electrically connected to the power distribution mainboard of the power distribution module.

12. The battery according to claim 11, characterized in that It comprises a base plate, the power distribution module and the management control module are both arranged on the base plate, and the base plate is used for heat conduction with the heat conduction area and realizing cooling of the power distribution module.

13. The battery according to claim 12, characterized in that A channel is provided in the bottom plate, and the channel is used for circulating a cooling liquid, and the cooling liquid is used to cool the heat transfer area. The channel is connected to an interface for introducing the cooling liquid into the channel.

14. A vehicle, characterized in that: Comprising a battery as claimed in any one of claims 10 to 13.

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