Vehicle-mounted power supply device, power assembly and electric vehicle

Abstract

The application discloses a vehicle-mounted power supply device, a power assembly and an electric vehicle, and relates to the technical field of electric vehicles, the vehicle-mounted power supply device comprises a liquid cooling radiator and a power module, the power module comprises a packaging shell and a plurality of electrical connectors protruding from the surface of the packaging shell, and the vehicle-mounted power supply device comprises a vertical insulating plate located between two electrical connectors on the same side of the packaging shell. The vertical insulating plate is arranged on the vehicle-mounted power supply device, and the electrical gap and the creepage distance between the two adjacent electrical connectors are increased by installing the vertical insulating plate between the two adjacent electrical connectors, so that the problems of short circuit and failure of the power module are avoided, and the overall performance of the motor controller and the electric vehicle is improved. Moreover, the vertical insulating plate is matched with the main body of the power module, so that the assembly is simple and the cost is low.

Description

Technical Field

[0001] This application relates to the field of electric vehicle technology, and in particular to an on-board power supply device, powertrain, and electric vehicle. Background Technology

[0002] Electric vehicles use a powertrain as their power source, which converts electrical energy from the battery into mechanical energy to propel the vehicle forward. The powertrain drives the motor through a motor controller. When the motor controller is operating, its internal power modules generate heat, increasing internal pressure. When the motor controller stops working, the internal air temperature drops, causing condensation to form on the surfaces of the power modules. This condensation can easily lead to short circuits and other malfunctions, endangering the safe operation of the motor controller. Utility Model Content

[0003] This application provides an on-board power supply device, a powertrain, and an electric vehicle. In a first aspect, the on-board power supply device is used to supply power to the load of the electric vehicle. The on-board power supply device includes a liquid-cooled radiator and a power module, the liquid-cooled radiator and the power module being stacked along the thickness direction of the liquid-cooled radiator. The power module includes a housing and a plurality of electrical connectors protruding from the surface of the housing. At least two of the plurality of electrical connectors are arranged on the same side of the housing along one direction perpendicular to the thickness of the liquid-cooled radiator. The on-board power supply device includes a vertical insulating plate extending along the thickness direction of the liquid-cooled radiator, the vertical insulating plate being located between the two electrical connectors on the same side of the housing.

[0004] This application installs a vertical insulating plate on the vehicle power supply device. By installing the vertical insulating plate between two adjacent electrical connectors, the electrical clearance and creepage distance between the two adjacent electrical connectors can be increased, avoiding problems such as short circuits and failures of the power module, thereby improving the overall performance of the motor controller and the electric vehicle. Moreover, the vertical insulating plate is compatible with the main body of the power module, making assembly simple and cost-effective.

[0005] In one possible implementation, the power module further includes a lateral insulating plate that extends along the thickness direction of the vertical insulating plate, protruding from a surface of the package housing and connected to the vertical insulating plate.

[0006] In this embodiment, a horizontal insulating plate is provided on the vertical insulating plate. The horizontal insulating plate can be attached to the package housing to prevent two adjacent electrical connectors from creeping along the surface of the package housing. This increases the creepage distance between two adjacent electrical connectors and prevents short circuits between two adjacent electrical connectors from causing short circuits in the power module.

[0007] In one possible implementation, along the arrangement direction of the at least two electrical connectors, the sum of the lengths of two adjacent electrical connectors and the length of the gap between two adjacent electrical connectors is less than or equal to the length of the transverse insulating plate, the length of the transverse insulating plate being less than the length of the encapsulation housing.

[0008] In this embodiment, a transverse insulating plate can completely protect the encapsulation housing and electrical connectors to prevent two adjacent electrical connectors from creeping along the surface of the encapsulation housing, increase the creepage distance between two adjacent electrical connectors, prevent short circuits in the power module, and ensure that the length of the transverse insulating plate does not protrude beyond the length of the encapsulation housing to prevent interference with the installation of other electrical components.

[0009] In one possible implementation, the power module further includes another lateral insulating plate extending along the thickness direction of the vertical insulating plate. The other lateral insulating plate is positioned on both sides of the encapsulation housing along the thickness direction of the liquid cooler, protruding from another surface of the encapsulation housing and connected to the vertical insulating plate.

[0010] In this embodiment, another horizontal insulating plate is provided on the vertical insulating plate. The other horizontal insulating plate and the horizontal insulating plate are attached to the encapsulation housing together to clamp the vertical insulating plate, preventing the vertical insulating plate from falling off during the operation of the vehicle power supply device, thereby ensuring the stability of the vertical insulating plate on the vehicle power supply device during operation.

[0011] In one possible implementation, the power module includes a connecting plate, the vertical insulating plate is used to fix the connecting plate, and the connecting plate is used to connect the horizontal insulating plate and the other horizontal insulating plate along the thickness direction of the liquid cooler.

[0012] In this embodiment of the application, by setting a connecting plate and a vertical insulating plate fixedly connected on the vehicle power supply device, and having a connecting plate, a horizontal insulating plate, and another horizontal insulating plate together clamp the encapsulation shell, the connection stability between a connecting plate and multiple electrical connectors can be enhanced, the creepage distance between two adjacent electrical connectors along the surface of the encapsulation shell can be increased, and short circuits of the power module can be prevented.

[0013] In one possible implementation, the connecting plate includes a through hole for penetrating the connecting plate along the arrangement direction of the electrical connector and the encapsulation housing, for accommodating the electrical connector.

[0014] In this embodiment, a through hole is provided on a connecting plate, allowing the electrical connector to pass through the through hole. In one possible implementation, the electrical connector abuts against the inner wall of the through hole to increase the connection stability between the electrical connector and the through hole and prevent relative sliding between the electrical connector and the insulating component.

[0015] In one possible implementation, the power module includes another connecting plate, the vertical insulating plate is used to fix the other connecting plate, the other connecting plate is located on the same side of the electrical connector along the thickness direction of the liquid cooler and the liquid cooler, the other connecting plate includes another through hole, the other through hole is used to penetrate the other connecting plate along the thickness direction of the liquid cooler.

[0016] In this embodiment of the application, by setting another connecting plate on the vehicle power supply device, it is possible to carry the electrical connector and use it to separate electrical components from other electrical components, so as to prevent other electrical components from interfering with the electrical connector and increase the insulation distance between other electrical components and the electrical connector.

[0017] In one possible implementation, the length of the other connecting plate along the arrangement direction of the at least two electrical connectors is greater than or equal to the length of at least one of the electrical connectors, and the length of the other connecting plate on one side of the vertical insulating plate is less than or equal to the length of the encapsulation housing on the same side of the vertical insulating plate.

[0018] In this embodiment, the length of the other connecting plate is greater than or equal to the length of an electrical connector to ensure that the other connecting plate can fully support an electrical connector and isolate interference between an electrical component and other electrical components. The length of the other connecting plate will not protrude beyond the length of the encapsulation housing to avoid interference during the installation of other electrical components.

[0019] In one possible implementation, the number of the other connecting plates is at least two, and at least two of the connecting plates are located on both sides of the vertical insulating plate along the arrangement direction of the at least two electrical connectors.

[0020] In this embodiment, each connecting plate can support an electrical connector, and the vertical insulating plate can separate the connecting plates, thus providing protection for each electrical connector.

[0021] In one possible implementation, the vehicle power supply device includes a fixing plate, and the fixing plate, the liquid cooling radiator and the power module are arranged sequentially along the thickness direction of the liquid cooling radiator. The fixing plate includes a third through hole, and the outer wall surface of the other connecting plate facing the fixing plate includes a third protrusion. The third protrusion along the thickness direction of the liquid cooling radiator is used to pass through the third through hole.

[0022] In this embodiment, a fixing plate is provided on the vehicle power supply device to fix the liquid cooler and increase the stability of the liquid cooler. A third through hole is provided on the fixing plate and a third protrusion is provided on another connecting plate so that the third protrusion passes through the third through hole, preventing the vertical insulation plate from moving in the direction perpendicular to the thickness of the liquid cooler and ensuring the reliability and stability of the vertical insulation plate.

[0023] In one possible implementation, at least three of the plurality of electrical connectors are arranged on the same side of the encapsulation housing, and at least one vertical insulating plate is included between any two adjacent electrical connectors along the arrangement direction of the at least three electrical connectors.

[0024] In this embodiment of the application, by setting a vertical insulating plate between two adjacent electrical connectors, the electrical clearance and creepage distance between the two adjacent electrical connectors can be increased, ensuring the safety between the two adjacent electrical connectors and preventing short circuits in the power module.

[0025] In one possible implementation, one side of the encapsulation housing includes a groove for accommodating one side of the vertical insulating plate. The length of the groove along the arrangement direction of the at least two electrical connectors is equal to the length of the vertical insulating plate. The one side of the vertical insulating plate along the arrangement direction of the electrical connectors and the encapsulation housing is used to fit against the bottom wall of the groove.

[0026] In this embodiment, a groove is formed on one side of the encapsulation housing, and the vertical insulating plate and the groove are interference-fitted to avoid gaps. This prevents condensation or other impurities from flowing into the gaps and causing creepage between adjacent electrical connectors, which could lead to short circuits or failures in the power module.

[0027] In one possible implementation, the vehicle power supply device includes a water-absorbing layer, and the liquid-cooled radiator is used to fix the water-absorbing layer. The water-absorbing layer, the liquid-cooled radiator, and the power module are arranged sequentially along the thickness direction of the liquid-cooled radiator.

[0028] In this embodiment, a water-absorbing layer is provided on the vehicle power supply device. The water-absorbing layer is attached to the side of the liquid cooler away from the power module to absorb the condensate generated by the liquid cooler during the cooling process of the power module. This prevents the condensate from flowing into the power module and causing a short circuit, thus ensuring the safety of the power module.

[0029] Secondly, this application provides a powertrain including an on-board power supply device as described in any of the preceding claims, the on-board power supply device being used to connect the motor. By integrating the on-board power supply device into the electrical control slot of the powertrain, this application simplifies the structural design and manufacturing process, improving the integration level of the powertrain. Furthermore, by providing a vertical insulating plate on the on-board power supply device, and by installing the vertical insulating plate between two adjacent electrical connectors, the electrical clearance and creepage distance between the two adjacent electrical connectors can be increased, avoiding problems such as short circuits and failures of the power module, thereby improving the overall performance of the powertrain. Moreover, the vertical insulating plate cooperates with the main body of the power module, simplifying assembly and reducing cost.

[0030] Thirdly, this application provides an electric vehicle, including wheels and a powertrain as described above, the powertrain being used to drive the wheels. This application, by providing a vertical insulating plate on the on-board power supply device of the powertrain, and by installing the vertical insulating plate between two adjacent electrical connectors, can increase the electrical clearance and creepage distance between the two adjacent electrical connectors, avoiding problems such as short circuits and failures of the power module, thereby improving the overall performance of the motor controller and the electric vehicle. Attached Figure Description

[0031] Figure 1 A schematic diagram of an electric vehicle provided in an embodiment of this application;

[0032] Figure 2 A schematic diagram of the powertrain provided in an embodiment of this application;

[0033] Figure 3 This is an assembly diagram of the powertrain provided in an embodiment of this application;

[0034] Figure 4 This is a schematic diagram of the electrical control slot of the powertrain provided in the embodiments of this application;

[0035] Figure 5 This is an exploded schematic diagram of the vehicle-mounted power supply device provided in the embodiments of this application;

[0036] Figure 6 Another schematic diagram of the vehicle-mounted power supply device provided in the embodiments of this application;

[0037] Figure 7 A schematic diagram illustrating the relationship between the power module and the vertical insulating plate provided in an embodiment of this application;

[0038] Figure 8 Another schematic diagram illustrating the relationship between the power module and the vertical insulating plate provided in the embodiments of this application;

[0039] Figure 9 Another schematic diagram illustrating the relationship between the power module and the vertical insulating plate provided in the embodiments of this application;

[0040] Figure 10 Another schematic diagram illustrating the relationship between the power module and the vertical insulating plate provided in the embodiments of this application;

[0041] Figure 11 Another schematic diagram illustrating the relationship between the power module and the vertical insulating plate provided in the embodiments of this application;

[0042] Figure 12 Another schematic diagram illustrating the relationship between the power module and the vertical insulating plate provided in the embodiments of this application;

[0043] Figure 13 Another schematic diagram illustrating the relationship between the power module and the vertical insulating plate provided in the embodiments of this application;

[0044] Figure 14 A schematic diagram showing the relationship between the mounting plate, liquid cooler, and power module provided in an embodiment of this application;

[0045] Figure 15 Another schematic diagram illustrating the relationship between the power module and the vertical insulating plate provided in the embodiments of this application;

[0046] Figure 16 A schematic diagram of a vertical insulating plate provided in an embodiment of this application;

[0047] Figure 17 Another schematic diagram of the vertical insulating plate provided in the embodiments of this application;

[0048] Figure 18 Another schematic diagram of the vehicle-mounted power supply device provided in the embodiments of this application;

[0049] Figure 19 Another schematic diagram of the vehicle-mounted power supply device provided in the embodiments of this application. Detailed Implementation

[0050] The embodiments of this application are described below with reference to the accompanying drawings.

[0051] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0052] Electric vehicles use a powertrain as their power source, which converts electrical energy from the battery into mechanical energy to propel the vehicle forward. The powertrain drives the motor through a motor controller. When the motor controller is working, its internal power modules generate heat, increasing internal pressure. When the motor controller stops working, the internal air temperature drops, causing condensation to form on the surfaces of the power modules inside the controller. This condensation can easily lead to short circuits and other malfunctions, endangering the safe operation of the motor controller.

[0053] To address the aforementioned issues, this application provides an on-board power supply device applied to a powertrain, which in turn is used in an electric vehicle to improve the overall performance of the electric vehicle.

[0054] This application provides an on-board power supply device for electric vehicles, which supplies power to the load of the electric vehicle. The on-board power supply device includes a liquid-cooled radiator and a power module. The liquid-cooled radiator and the power module are stacked along the thickness direction of the liquid-cooled radiator. The power module includes a housing and a plurality of electrical connectors protruding from the surface of the housing. At least two of the plurality of electrical connectors are arranged on the same side of the housing along one of the directions perpendicular to the thickness of the liquid-cooled radiator. The on-board power supply device includes a vertical insulating plate extending along the thickness direction of the liquid-cooled radiator. The vertical insulating plate is located between the two electrical connectors on the same side of the housing.

[0055] This application installs a vertical insulating plate on the vehicle power supply device. By installing the vertical insulating plate between two adjacent electrical connectors, the electrical clearance and creepage distance between the two adjacent electrical connectors can be increased, avoiding problems such as short circuits and failures of the power module, thereby improving the overall performance of the motor controller and the electric vehicle. Moreover, the vertical insulating plate is compatible with the main body of the power module, making assembly simple and cost-effective.

[0056] This application provides an electric vehicle, which includes a two-wheeled, three-wheeled, or four-wheeled vehicle. In this application embodiment, the electric vehicle 1 includes a battery electric vehicle (BEV), a hybrid electric vehicle (HEV), and a range-extended battery vehicle (REEV).

[0057] See Figure 1 As shown and Figure 2 As shown, Figure 1 This is a schematic diagram of an electric vehicle provided in an embodiment of this application. Figure 2This is a schematic diagram of the powertrain provided in an embodiment of this application. The electric vehicle 1 includes a powertrain 10, a frame 20, and a power battery 30. The frame 20 is used to fix the power battery 30 and the powertrain 10. The frame 20 serves as the structural skeleton of the electric vehicle 1, supporting and fixing the powertrain 10 and the power battery 30, and bearing the loads from the internal and external environments of the vehicle system. The drive motor 100 of the powertrain 10 is used to drive the two front wheels 40 or the two rear wheels 40 of the electric vehicle 1.

[0058] In one embodiment, the electric vehicle 1 includes a frame 20 for fixing the power battery 30 and the powertrain 10. The frame 20 serves as the structural skeleton of the electric vehicle 1, supporting and fixing the powertrain 10 and the power battery 30, and bearing the loads of the internal and external environment of the vehicle system.

[0059] This application provides a powertrain embodiment. See also... Figure 1 and Figure 2 As shown, the powertrain 10 includes a drive motor 100, an on-board power supply unit 200, and a reducer 300. In one embodiment, the reducer 300 includes a single-speed reducer, a two-speed reducer, or a gearbox. In another embodiment, the reducer 300 includes an input shaft 310, an intermediate shaft 320, and an output shaft 330. Figure 2 As shown, the reducer 300 includes an input shaft 310, an intermediate shaft 320, and an output shaft 330. The input shaft 310 is used to drive the drive motor 100 and the intermediate shaft 320, the intermediate shaft 320 is used to drive the output shaft 330, and the output shaft 330 is used to drive the wheels 40. In one embodiment, the reducer 300 drives two wheels 40 respectively via two half-shafts 50. In one embodiment, the on-board power supply device 200 is used to supply power to the load of the electric vehicle, including a power battery, a DC-DC module, and the vehicle's air conditioning system. In one embodiment, the on-board power supply device 200 receives AC power and converts it into DC power to charge the power battery 30. In one embodiment, the on-board power supply device 200 receives high-voltage DC power and supplies it to charge the power battery 30. In one embodiment, the on-board power supply device includes an on-board charger, a motor controller, a DC-DC converter, and other on-board power supply components.

[0060] In one embodiment, the on-board power supply device 200 receives DC power from the power battery 30, converts it into AC power, and transmits it to the drive motor 100. The drive motor 100 converts electrical energy into mechanical energy and is connected to a reducer 300 for transmission. The drive motor 100 drives the wheels 40 of the electric vehicle 1 to rotate through the reducer 300. In another embodiment, the on-board charger converts AC power from the power grid into DC power and transmits it to the power battery 30 for charging. In yet another embodiment, the on-board charger includes a DC-DC converter module that converts high-voltage DC power into low-voltage DC power to power the low-voltage electrical systems within the electric vehicle 1, such as lights, dashboard, or air conditioning.

[0061] Figure 3 This is an assembly diagram of the powertrain provided in an embodiment of this application. Figure 4 This is a schematic diagram of the electrical control slot of the powertrain provided in the embodiments of this application.

[0062] In one embodiment, see Figure 3 and Figure 4 As shown, the housing 400 of the powertrain 10 includes an electrical control slot 410, a motor slot 420, and a reducer slot 430. This application provides an on-board power supply device. In this embodiment, the on-board power supply device 200 uses a motor controller as an example. The motor controller is only one embodiment for illustrative purposes. In practical applications, the on-board power supply device is not limited to a motor controller. Other similar structures, such as other on-board power supply devices with vertical insulating plates including liquid-cooled radiators and power modules, are all within the scope of protection of this application. The on-board power supply device 200 is part of the powertrain 10 and is integrated into the housing 400 of the powertrain 10. The electrical control slot 410 of the powertrain is used to accommodate multiple electrical components of the motor controller, including components or combinations of components such as capacitors or inductors. These electrical components are used for power conversion within the motor controller. The motor slot 420 and reducer slot 430 of the powertrain are distributed on both axial sides of the powertrain housing 400. The motor slot 420 is used to accommodate the drive motor of the powertrain 10. The axis of the drive motor is parallel to the axis of the motor slot 420, and the slot opening orientation of the motor slot 420 and the slot opening orientation of the reducer slot 430 are opposite along the axial direction of the housing 400. The powertrain housing 400 includes a motor end cover and a reducer end cover, wherein the motor end cover is used to enclose the motor slot 420, and the reducer end cover is used to enclose the reducer slot 430. The electrical control slot 410 is located on the radial side of the motor slot 420. The inner wall of the electrical control slot 410 can be part of the outer wall surface of the motor slot 420, thereby forming a large-capacity receiving cavity to meet the installation requirements of the on-board power supply device 200.

[0063] Figure 5 This is an exploded schematic diagram of the vehicle-mounted power supply device provided in the embodiments of this application. Figure 6 This is another schematic diagram of the vehicle-mounted power supply device provided in the embodiments of this application. Figure 7 This is a schematic diagram illustrating the relationship between the power module and the vertical insulating plate provided in an embodiment of this application.

[0064] In one embodiment, see Figure 5 As shown, the vehicle power supply device 200 includes a circuit board 201, a liquid cooler 210, a power module 220, a capacitor, and a housing 202. The circuit board 201, liquid cooler 210, power module 220, and capacitor are integrated into the housing 202, which optimizes the space utilization of the vehicle power supply device 200. The circuit board 201, liquid cooler 210, and power module 220 are stacked along the thickness direction of the liquid cooler 210, achieving an efficient heat dissipation path. Electrically connected to the power module 220, the liquid cooler 210 controls the operation of the power module 220. The power module 220 converts DC power to AC power. During operation, the power module 220 generates heat. The liquid cooler 210 dissipates heat from the circuit board 201 and the power module 220 to ensure their normal operation. The number of liquid coolers 210 can be one, two, or three, etc. Using multiple liquid coolers 210 improves the heat dissipation effect on the power module 220. In one embodiment, the liquid cooler 210 can be a single-layer heat sink structure, with the liquid cooler 210 and the power module 220 stacked along the thickness direction for heat dissipation. In another embodiment, the liquid cooler 210 can be a double-layer heat sink structure, with the two layers symmetrically arranged on both sides of the power module 220. This improves the heat dissipation effect on the power module 220 and ensures uniform temperature distribution.

[0065] In one embodiment, see Figure 6 and Figure 7 As shown, the vehicle power supply device 200 includes a liquid-cooled radiator 210 and a power module 220. The liquid-cooled radiator 210 and the power module 220 are stacked along the thickness direction of the liquid-cooled radiator 210, achieving an efficient heat dissipation path. The liquid-cooled radiator 210 has a single-layer heat dissipation plate structure. The thickness direction of the liquid-cooled radiator 210 and the axial direction perpendicular to the electrical control slot 410 are the Z-direction. The liquid-cooled radiator 210 is located on one side of the power module 220 in the positive Z-direction. In one embodiment, the power module 220 includes an insulated gate bipolar transistor (IGBT) module, a silicon carbide power module, etc., suitable for high-voltage and high-power scenarios in new energy vehicles.

[0066] In this embodiment, an IGBT module is used as an example of a power module. The IGBT module is only one embodiment for illustrative purposes; in practical applications, the power module is not limited to an IGBT module. Other similar power modules are all within the scope of protection of this application. In one embodiment, the power module 220 includes a housing 221 and at least two electrical connectors 222. The housing 221 protects the internal structure of the power module 220 and also provides insulation and heat conduction. The at least two electrical connectors 222 are located on the same side of the housing 221 along one direction perpendicular to the thickness of the liquid cooler 210. The direction from the housing 221 towards the electrical connectors 222 is the positive X direction, and the at least two electrical connectors 222 are located at opposite ends of the X direction. The arrangement direction of the at least two electrical connectors 222 is the Y direction. In one embodiment, one side of the housing 221 along the X direction is the AC power terminal side, used to convert AC power to DC power output, and the other side of the housing 221 along the X direction is the DC power terminal side, used to convert DC power to DC power output. In one embodiment, the electrical connector 222 includes a copper busbar connector, pins, etc., and the electrical connector 222 is used to electrically connect with the package housing 221.

[0067] In one embodiment, see Figure 7 As shown, the vehicle power supply device 200 includes a vertical insulating plate 230. The vertical insulating plate 230 is located between two adjacent electrical connectors 222 along the arrangement direction of at least two electrical connectors 222. The vertical insulating plate 230 is used to fit the encapsulation housing along the arrangement direction of the electrical connectors 222 and the encapsulation housing 221.

[0068] In one embodiment, see Figure 7 As shown, the vertical insulating plate 230 can be rectangular in shape. The vertical insulating plate 230 extends along the Z direction, and along the X direction, one sidewall of the vertical insulating plate 230 facing the encapsulation housing 221 connects to the corresponding sidewall of the encapsulation housing 221 to fit snugly against the encapsulation housing 221. This ensures a stable connection between the vertical insulating plate 230 and the encapsulation housing 221, preventing the vertical insulating plate 230 from sliding or falling off during operation. In one embodiment, this application provides a vertical insulating plate on the vehicle power supply device. By installing the vertical insulating plate between two adjacent electrical connectors, the electrical clearance and creepage distance between the two adjacent electrical connectors can be increased, avoiding problems such as short circuits and failures of the power module. This improves the overall performance of the motor controller and the electric vehicle. Furthermore, the vertical insulating plate mates with the main body of the power module, making assembly simple and cost-effective.

[0069] In one embodiment, the liquid-cooled radiator 210 includes a water channel plate and a water channel within it. The water channel circulates coolant, which dissipates heat from the power module 220. In another embodiment, the liquid-cooled radiator 210 and the power module 220 can be fixed together using clips, screws, or other means to achieve a close fit and improve the heat dissipation efficiency of the liquid-cooled radiator 210 on the power module 220.

[0070] In one embodiment, a sidewall of the vertical insulating plate 230 facing the encapsulation housing 221 along the X direction is connected to the sidewall of the encapsulation housing 221 corresponding to the sidewall of the vertical insulating plate 230. A sidewall of the vertical insulating plate 230 along the Y direction is connected to the sidewall of an electrical connector 222. Another sidewall of the vertical insulating plate 230, which is disposed opposite to the sidewall of the vertical insulating plate 230 along the Y direction, is connected to the sidewall of another electrical connector 222 adjacent to the electrical connector. This arrangement enables the vertical insulating plate 230 to be located between two adjacent electrical connectors 222, increasing the electrical clearance between the two adjacent electrical connectors 222. The vertical insulating plate 230 fits against the encapsulation housing 221 and the electrical connector 222, providing connection stability between the vertical insulating plate 230, the encapsulation housing 221, and the electrical connector 222, preventing the vertical insulating plate 230 from sliding or falling off during operation. In one embodiment, the length of the vertical insulating plate 230 along the Z direction is greater than the length of the encapsulation housing 221. One side of the vertical insulating plate 230 along the positive Z direction and the liquid-cooled heat sink 210 are located on the same side of the electrical connector 222, so that the vertical insulating plate 230 achieves a better protective effect and prevents creepage between adjacent electrical connectors 222. In another embodiment, the length of the vertical insulating plate 230 along the Z direction is equal to the length of the encapsulation housing 221. One side of the vertical insulating plate 230 along the positive Z direction and the liquid-cooled heat sink 210 are located on the same side of the electrical connector 222. The horizontal plane containing one side of the vertical insulating plate 230 along the X direction is on the same horizontal plane as the bottom wall of the encapsulation housing 221. In yet another embodiment, the length of the vertical insulating plate 230 along the Z direction is less than the length of the encapsulation housing 221. One side of the vertical insulating plate 230 along the positive Z direction and the liquid-cooled heat sink 210 are located on the same side of the electrical connector 222. In one embodiment, the vertical insulating plate 230 along the Y direction has a certain width and is located between two adjacent electrical connectors 222 to increase the insulation distance between the two adjacent electrical connectors 222.

[0071] In one embodiment, the vertical insulating plate 230 and the encapsulation shell 221 are separable independent structures. The vertical insulating plate 230 and the encapsulation shell 221 can be fixed together by means of adhesive, clips and screws to achieve a close fit between the vertical insulating plate 230 and the encapsulation shell 221.

[0072] In one embodiment, the vertical insulating plate 230 and the electrical connectors 222 can be fixed together by means of adhesive, clips and screws to achieve a close fit between the vertical insulating plate 230 and the two electrical connectors 222.

[0073] In one embodiment, the vertical insulating plate 230 can be made of insulating materials such as silicone rubber or silicone. The vertical insulating plate 230 uses a soft insulating material to facilitate the installation or replacement of the vertical insulating plate 230, making disassembly convenient and cost-effective.

[0074] In one embodiment, the housing 400 of the powertrain 10 and the housing of the vehicle power supply device 200 are an integral structure, that is, the housing of the vehicle power supply device 200 is the housing 400 of the powertrain 10. The housing 400 includes an electrical control slot 410, which is used to accommodate multiple electrical components of the vehicle power supply device 200. The electrical components refer to components or combinations of components such as capacitors and inductors, which are located inside the vehicle power supply device 200 to perform power conversion.

[0075] Figure 8 Another schematic diagram illustrating the relationship between the power module and the vertical insulating plate provided in the embodiments of this application.

[0076] In one embodiment, see Figure 8 As shown, the power module 220 also includes a transverse insulating plate 231, which extends along the thickness direction of the vertical insulating plate 230. The transverse insulating plate 231 protrudes from one surface of the package housing 221 and is connected to the vertical insulating plate 230.

[0077] In this embodiment, one side of the power module along the positive X direction is the AC power terminal side. The AC power terminal side of the power module 220 includes two electrical connectors 222, both of which are copper busbar connectors 222a, including a positive copper busbar connector and a negative copper busbar connector. The power module 220 includes a transverse insulating plate 231 extending along the reverse X direction. A transverse insulating plate 231 extends along the Y direction towards the two electrical connectors 222 respectively. A transverse insulating plate 231 and the liquid cooling heat sink 210 are located on the same side of the encapsulation housing 221 along the positive Z direction. The transverse insulating plate 231 and the encapsulation housing 221 are fitted together to prevent two adjacent copper busbar connectors 222a from creeping along the surface of the encapsulation housing 221, increase the creepage distance between two adjacent copper busbar connectors 222a, and prevent short circuits between two adjacent copper busbar connectors 222a that could cause a short circuit in the power module 220.

[0078] In one embodiment, the vertical insulating plate 230 and the horizontal insulating plate 231 are separable independent structures. The vertical insulating plate 230 and the horizontal insulating plate 231 can be fixed together by means of adhesive, clips, and screws to achieve a close fit. In another embodiment, the vertical insulating plate 230 and the horizontal insulating plate 231 are an integral structure, with one horizontal insulating plate 231 formed simultaneously during integral injection molding.

[0079] In one embodiment, the transverse insulating plate 231 and the encapsulation housing 221 are separable independent structures. The transverse insulating plate 231 and the encapsulation housing 221 can be fixed together by means of adhesive, snaps and screws to achieve a close fit between the transverse insulating plate 231 and the encapsulation housing 221.

[0080] In the embodiments of this application, see Figure 8As shown, one side of the power module along the X-direction is the DC power terminal side. The DC power terminal side of the power module 220 includes three electrical connectors 222. The three electrical connectors 222 include a copper busbar connector 222a and multiple pins 222b. The copper busbar connector 222a is located between the multiple pins 222b. There are two vertical insulating plates 230 and two horizontal insulating plates 231. A vertical insulating plate 230 is set between two adjacent electrical connectors 222. The power module 220 includes a horizontal insulating plate 231 extending along the X-direction. Along the Z-direction, a horizontal insulating plate 231 and the liquid cooling heat sink 210 are located on the same side of the package housing 221. The horizontal insulating plate 231 and the package housing 221 are attached to each other to prevent two adjacent electrical connectors 222 from creeping along the surface of the package housing 221, increase the creepage distance between two adjacent electrical connectors 222, and prevent short circuits between two adjacent electrical connectors 222 that could cause a short circuit in the power module 220.

[0081] Figure 9 Another schematic diagram illustrating the relationship between the power module and the vertical insulating plate provided in the embodiments of this application.

[0082] In one embodiment, see Figure 9 As shown, the sum of the lengths of two adjacent electrical connectors 222 along the arrangement direction of at least two electrical connectors 222 and the length of the gap between two adjacent electrical connectors 222 is less than or equal to the length of a transverse insulating plate 231, and the length of a transverse insulating plate 231 is less than the length of the encapsulation housing 221.

[0083] In the embodiments of this application, see Figure 9As shown, one side of the power module along the positive X direction is the AC power terminal side. The AC power terminal side of the power module 220 includes two electrical connectors 222, both of which are copper busbar connectors 222a, including one positive copper busbar connector and one negative copper busbar connector. A vertical insulating plate 230 along the Y direction separates two adjacent copper busbar connectors 222a. A horizontal insulating plate 231 extends along the Y direction to both sides of the vertical insulating plate 230, and the length of the two adjacent copper busbar connectors 222a and the length of the gap between the adjacent copper busbar connectors 222a are... The length of the transverse insulating plate 231 is less than or equal to the length of a transverse insulating plate 231. The transverse insulating plate 231 can completely protect the encapsulation housing 221 and the copper busbar connector 222a to prevent two adjacent copper busbar connectors 222a from creeping along the surface of the encapsulation housing 221, increase the creepage distance between two adjacent copper busbar connectors 222a, and prevent the power module 220 from short-circuiting. The length of the transverse insulating plate 231 in the Y direction is less than the length of the encapsulation housing 221. The length of the transverse insulating plate 231 will not protrude beyond the length of the encapsulation housing 221 to prevent interference with the installation of other electrical components.

[0084] In the embodiments of this application, see Figure 9 As shown, one side of the power module along the X-direction is the DC power terminal side. The DC power terminal side of the power module 220 includes three electrical connectors 222. The three electrical connectors 222 include a copper busbar connector 222a and multiple pins 222b. The copper busbar connector 222a is located between the multiple pins 222b. A horizontal insulating plate 231 extends along the Y-direction towards the direction where the copper busbar connector 222a is located. Two vertical insulating plates 230 jointly fix the horizontal insulating plate 231. The length of the copper busbar connector 222a is less than or equal to that of the horizontal insulating plate 231. The length of the insulating plate 231 is such that a transverse insulating plate 231 can completely protect the package housing 221 and the copper busbar connector 222a, so as to prevent creepage between adjacent copper busbar connectors 222a and multiple pins 222b along the surface of the package housing 221, increase the creepage distance between two adjacent electrical connectors 222, and prevent the power module 220 from short-circuiting. The length of a transverse insulating plate 231 in the Y direction is less than the length of the package housing 221, and the length of a transverse insulating plate 231 will not protrude beyond the length of the package housing 221, so as to prevent interference with the installation of other electrical components.

[0085] In one embodiment, the two vertical insulating plates 230 and the horizontal insulating plate 231 are separable independent structures. The two vertical insulating plates 230 and the horizontal insulating plate 231 can be fixedly connected by means of adhesive, snaps and screws, etc. Alternatively, the two vertical insulating plates 230 and the horizontal insulating plate 231 are an integral structure, and a horizontal insulating plate 231 is formed simultaneously during integral injection molding.

[0086] In one embodiment, see further. Figure 9 As shown, a transverse insulating plate 231 includes a protrusion 2311 extending along the Y direction, and the length of the protrusion 2311 along the Y direction is less than or equal to the length of the transverse insulating plate 231. The length of the protrusion 2311 along the X direction is less than the length of the transverse insulating plate 231. It is used to cooperate with other electrical components or other fixed plates to increase the insulation distance between the transverse insulating plate 231 and other electrical components.

[0087] In one embodiment, a transverse insulating plate 231 extends a certain length in the opposite X direction. The sum of the length of the transverse insulating plate 231 and the length of the liquid-cooled radiator 210 in the X direction is less than or equal to the length of the power module 220, so as to save installation space.

[0088] In one embodiment, see Figure 10 As shown, the power module 220 also includes another transverse insulating plate 232, which extends along the thickness direction of the vertical insulating plate 230. Along the thickness direction of the liquid cooler 210, the other transverse insulating plate 232 is located on both sides of the package housing 221, protruding from another surface of the package housing 221 and connected to the vertical insulating plate 230.

[0089] In this embodiment, one side of the power module along the positive X direction is the AC power terminal side. The AC power terminal side of the power module includes two electrical connectors 222, both of which are copper busbar connectors 222a, including a positive copper busbar connector and a negative copper busbar connector. The vertical insulating plate 230 includes another horizontal insulating plate 232 extending along the opposite X direction. Along the Y direction, one horizontal insulating plate 231 extends in the direction where the two electrical connectors 222 are located. Along the thickness direction of the liquid-cooled radiator 210, another horizontal insulating plate 232 extends in the opposite X direction. An insulating plate 232 and a horizontal insulating plate 231 are located on both sides of the encapsulation housing 221. Another horizontal insulating plate 232 is attached to the encapsulation housing 221 and together with the horizontal insulating plate 231, they are attached to the encapsulation housing 221. The other horizontal insulating plate 232 and the horizontal insulating plate 231 are used to clamp the vertical insulating plate 230 together to prevent the vertical insulating plate 230 from falling off during the operation of the vehicle power supply device 200, thereby ensuring the stability of the vertical insulating plate 230 on the vehicle power supply device 200 during the operation.

[0090] In one embodiment, another transverse insulating plate 232 extends a certain length in the opposite X direction. The length of the other transverse insulating plate 232 extending in the X direction is equal to the length of the transverse insulating plate 231 extending.

[0091] In one embodiment, the vertical insulating plate 230 and the other horizontal insulating plate 232 are separable independent structures. They can be fixed together by adhesive, clips, or screws to achieve a close fit. In another embodiment, the vertical insulating plate 230, one horizontal insulating plate 231, and the other horizontal insulating plate 232 are an integral structure. During integral injection molding, one horizontal insulating plate 231 and the other horizontal insulating plate 232 are formed simultaneously, resulting in a high connection strength between them.

[0092] In the embodiments of this application, see Figure 10 As shown, one side of the power module along the X-direction is the DC power terminal side. The DC power terminal side of the power module 220 includes three electrical connectors 222, each consisting of a copper busbar connector 222a and multiple pins 222b. The copper busbar connector 222a is located between the multiple pins 222b. There are two vertical insulating plates 230, located between two adjacent electrical connectors 222. Each vertical insulating plate 230 includes another horizontal insulating plate 232, which extends along the X-direction and along the liquid-cooled heat sink 21. Another transverse insulating plate 232 in the thickness direction of 0 is located on both sides of the encapsulation housing 221 along with a transverse insulating plate 231. The other transverse insulating plate 232 and the encapsulation housing 221 are attached together, and the other transverse insulating plate 231 is attached together with the encapsulation housing 221. The other transverse insulating plate 232 and the transverse insulating plate 231 are used to clamp the vertical insulating plate 230 together to prevent the vertical insulating plate 230 from falling off during the operation of the vehicle power supply device 200, thereby ensuring the stability of the vertical insulating plate 230 on the vehicle power supply device 200 during the operation.

[0093] In one embodiment, see Figure 10 As shown, a vertical insulating plate 230 along the Y direction separates two adjacent electrical connectors 222. Another horizontal insulating plate 232 extends along the Y direction to both sides of the vertical insulating plate 230. The sum of the lengths of the two adjacent electrical connectors 222 and the length of the gap between them is less than or equal to the length of the other horizontal insulating plate 232. Along the Y direction, the length of the other horizontal insulating plate 232 is less than the length of the encapsulation housing 221, and the length of the other horizontal insulating plate 232 is equal to the length of one horizontal insulating plate 231. In one embodiment, the length of the other horizontal insulating plate along the Y direction is less than the length of one horizontal insulating plate 231. In another embodiment, the length of the other horizontal insulating plate along the Y direction is greater than the length of one horizontal insulating plate 231.

[0094] In one embodiment, see further. Figure 10 As shown, a transverse insulating plate 231 and another transverse insulating plate 232 are arranged opposite to each other along the Z direction. Specifically, the transverse insulating plate 231 and the other transverse insulating plate 232 are respectively attached to both sides of the encapsulation housing 221. By setting another transverse insulating plate 232, the protection area of ​​the encapsulation housing 221 can be increased. The transverse insulating plate 231 and the other transverse insulating plate 232 can clamp the encapsulation housing 221 and the vertical insulating plate 230, preventing the vertical insulating plate 230 from falling off during the operation of the vehicle power supply device 200, ensuring the stability of the vertical insulating plate 230 on the vehicle power supply device 200 during the operation, better protecting the power module 220, and preventing the power module 220 from short-circuiting.

[0095] Figure 11 Another schematic diagram illustrating the relationship between the power module and the vertical insulating plate provided in the embodiments of this application.

[0096] In one embodiment, see Figure 11 As shown, the vehicle power supply device 200 includes a connecting plate 240, a vertical insulating plate 230 for fixing the connecting plate 240, and a connecting plate 240 for connecting a horizontal insulating plate 231 and another horizontal insulating plate 232 along the thickness direction of the liquid cooler 210.

[0097] In the embodiments of this application, please continue to refer to Figure 11 As shown, the end face of the encapsulation housing 221 facing the vertical insulating plate 230 is a smooth horizontal surface. The vehicle power supply device 200 includes a connecting plate 240, which extends along the Z direction and is fitted to the plane. The vertical insulating plate 230 and the connecting plate 240 are fixedly connected and perpendicular to each other along the X direction, which can enhance the connection stability between the connecting plate 240 and multiple electrical connectors 222, thereby increasing the creepage distance between two adjacent electrical connectors 222 along the surface of the encapsulation housing 221. Along the positive X direction, the end face of one transverse insulating plate 231 and the end face of another transverse insulating plate 232 are located on the same side of a plane of the encapsulation housing 221. Along the Z direction, the connecting plate 240 connects one transverse insulating plate 231 and another transverse insulating plate 232 to facilitate fixing one transverse insulating plate 231 and another transverse insulating plate 232.

[0098] In one embodiment, a connecting plate 240 has a certain width along the positive X direction, and the length of a connecting plate 240 along the Z direction is equal to the sum of the lengths of a transverse insulating plate 231, another transverse insulating plate 232, and the encapsulation housing 221. The length of a connecting plate 240 does not protrude beyond the lengths of a transverse insulating plate 231 and another transverse insulating plate 232 to prevent interference with the installation of other electrical components.

[0099] In one embodiment, a transverse insulating plate 231, another transverse insulating plate 232, and a connecting plate 240 together enclose a receiving groove. The opening of the receiving groove along the X direction faces one side wall of the encapsulation housing 221. The receiving groove is used to accommodate the side of the encapsulation housing 221 facing the vertical insulating plate 230, so that the receiving groove clamps the two sides of the encapsulation housing 221 along the Z direction, thereby enhancing the connection stability between the connecting plate 240 and the multiple electrical connectors 222, increasing the creepage distance between two adjacent electrical connectors 222 along the surface of the encapsulation housing 221, and enhancing the protective effect on the encapsulation housing 221.

[0100] In one embodiment, a connecting plate 240, a transverse insulating plate 231, and another transverse insulating plate 232 are fixedly connected. The connecting plate 240, the transverse insulating plate 231, and the other transverse insulating plate 232 can be fixed by means of adhesive, clips, or bolts. Alternatively, the connecting plate 240, the transverse insulating plate 231, and the other transverse insulating plate 232 are an integral structure, which is integrally injection molded and has high connection strength.

[0101] In one embodiment, the vertical insulating plate 230 and the connecting plate 240 are fixedly connected. The vertical insulating plate 230 and the connecting plate 240 can be fixed by means of adhesive, clips and screws, etc. Alternatively, the vertical insulating plate 230 and the connecting plate 240 are an integral structure, which is integrally injection molded.

[0102] Figure 12 Another schematic diagram illustrating the relationship between the power module and the vertical insulating plate provided in the embodiments of this application.

[0103] In one embodiment, see Figure 12 As shown, a connecting plate 240 includes a through hole 241 for passing through the connecting plate 240 along the arrangement direction of the electrical connector 222 and the encapsulation housing 221, and for accommodating the electrical connector 222.

[0104] In the embodiments of this application, see Figure 12As shown, one side of the power module along the positive X direction is the AC power terminal side. The AC power terminal side of the power module 220 includes two electrical connectors 222, both of which are copper busbar connectors 222a, including a positive copper busbar connector and a negative copper busbar connector. Taking the AC power terminal side of the power module as an example, a through hole 241 is provided on a connecting plate along the X direction, and the through hole 241 penetrates a connecting plate 240 along the X direction. A through hole 241 is strip-shaped and is used to accommodate a copper busbar connector 222a. The copper busbar connector 222a passes through the through hole 241. The length of the through hole 241 in the Y direction is equal to the length of the copper busbar connector 222a, and the length of the through hole 241 in the Z direction is equal to the length of the copper busbar connector 222a. Along the Y direction, the two sides of the copper busbar connector 222a are abutted against the two sides of the inner wall of the through hole 241, and along the Z direction, the two sides of the copper busbar connector 222a are abutted against the two sides of the inner wall of the through hole 241 to increase the connection stability between the copper busbar connector 222a and the through hole 241 and prevent the copper busbar connector 222a from sliding. In one embodiment, the length of the through hole 241 in the Y direction is greater than the length of the copper busbar connector 222a, and the length of the through hole 241 in the Z direction is greater than the length of the copper busbar connector 222a. The through hole 241 is used to accommodate one copper busbar connector 222a.

[0105] In one embodiment, there are two through holes 241. One through hole 241 of the same shape and size is provided on a connecting plate 240 located on both sides of the vertical insulating plate 230 along the Y direction. Each through hole 241 is used to accommodate each copper busbar connector 222a located on both sides of the vertical insulating plate 230, so as to increase the structural stability between each copper busbar connector 222a and the through hole 241 used to accommodate one copper busbar connector 222a, prevent each copper busbar connector 222a from sliding, and ensure the stability of the copper busbar connector 222a.

[0106] Figure 13 Another schematic diagram illustrating the relationship between the power module and the vertical insulating plate provided in the embodiments of this application.

[0107] In one embodiment, see Figure 13 As shown, the vehicle power supply device 200 includes another connecting plate 250, and a vertical insulating plate 230 is used to fix the other connecting plate 250. The other connecting plate 250 is located on the same side of the electrical connector 222 along the thickness direction of the liquid cooler 210. The other connecting plate 250 includes another through hole 251, which is used to penetrate the other connecting plate 250 along the thickness direction of the liquid cooler 210.

[0108] In the embodiments of this application, see Figure 13 As shown, one side of the power module along the positive X direction is the AC power terminal side. The AC power terminal side of the power module 220 includes two electrical connectors 222, both of which are copper busbar connectors 222a, including a positive copper busbar connector and a negative copper busbar connector. Taking the AC power terminal side of the power module as an example, the vehicle power supply device 200 includes another connecting plate 250. Along the Z direction, the other connecting plate 250 and the liquid cooling radiator 210 are located on the same side of the electrical connector 222. The vertical insulating plate 230 and a connecting plate 240 are fixedly connected, and the vertical insulating plate 230 and the other connecting plate 250 are perpendicular to each other. Along the Z direction, the other connecting plate 250 and the electrical connector 222 are stacked in sequence to separate the electrical connector 222 from other electrical components to prevent interference from other electrical components to the electrical connector 222.

[0109] In one embodiment, see Figure 13 As shown, a vertical insulating plate 230 and a horizontal insulating plate 231 are both fixedly connected to another connecting plate 250. Along the X direction, one horizontal insulating plate 231 is connected to another connecting plate 250, and the other connecting plate 250 extends a certain length along the positive X direction. The bottom wall of the other connecting plate 250 and the bottom wall of the horizontal insulating plate 231 are located on the same horizontal plane.

[0110] In the embodiments of this application, see Figure 13 As shown, the vertical insulating plate 230 can be trapezoidal in shape. The width of the vertical insulating plate 230 gradually extends along the positive Z direction in the Y direction, and is used to fix it to another connecting plate 250. The trapezoidal shape of the vertical insulating plate 230 makes the connection stability of the part where the vertical insulating plate 230 and the other connecting plate 250 meet better, prevents the vertical insulating plate 230 from falling off during the operation of the vehicle power supply device 200, and ensures the connection stability between the vertical insulating plate 230 and the other connecting plate 250.

[0111] In the embodiments of this application, see Figure 13 As shown, another through hole 251 is provided on another connecting plate 250 along the Z direction. The other through hole 251 penetrates the other connecting plate 250 along the Z direction. The other through hole 251 is circular in shape, but can also be other shapes. The other through hole 251 is used to penetrate the other connecting plate 250 along the Z direction. A copper busbar connector 222a includes a copper busbar through hole 2221. The copper busbar through hole 2221 is circular in shape, but can also be other shapes. The copper busbar through hole 2221 is used to penetrate the copper busbar connector 222a along the Z direction. The copper busbar through hole 2221 and the other through hole 251 are arranged opposite to each other along the Z direction. Along the X direction, the inner diameter of the copper busbar through hole 2221 is smaller than the inner diameter of the other through hole 251. Both the copper busbar through hole 2221 and the other through hole 251 are used to connect other electrical components.

[0112] In one embodiment, a copper busbar through hole 2221 and another through hole 251 are arranged opposite to each other along the Z direction, and the inner diameter of the copper busbar through hole 2221 is equal to the inner diameter of the other through hole 251 along the X direction. Both the copper busbar through hole 2221 and the other through hole 251 are used to connect other electrical components.

[0113] In one embodiment, see Figure 13 As shown, along the arrangement direction of at least two electrical connectors 222, the length of another connecting plate 250 is greater than or equal to the length of at least one electrical connector 222, and the length of another connecting plate 250 on one side of the vertical insulating plate 230 is less than or equal to the length of the encapsulation housing on the same side of the vertical insulating plate 230.

[0114] In the embodiments of this application, see Figure 13 As shown, one side of the power module along the positive X direction is the AC power terminal side. The AC power terminal side of the power module 220 includes two electrical connectors 222, both of which are copper busbar connectors 222a, including a positive copper busbar connector and a negative copper busbar connector. Taking the AC power terminal side of the power module as an example, another connecting plate 250 and a copper busbar connector 222a are arranged opposite each other along the Z direction. The length of the other connecting plate 250 along the Y direction is greater than the length of the copper busbar connector 222a corresponding to the other connecting plate 250, so that the other connecting plate 250 can fully support the copper busbar connector 222a. In one embodiment, another connecting plate 250 and a copper busbar connector 222a are arranged opposite each other along the Z direction, and the length of the other connecting plate 250 along the Y direction is equal to the length of the copper busbar connector 222a corresponding to the other connecting plate 250.

[0115] In the embodiments of this application, see further reference. Figure 13 As shown, another connecting plate 250 along the Y direction is disposed on either side of the vertical insulating plate 230. The length of the other connecting plate 250 on one side of the vertical insulating plate 230 is less than the length of the encapsulation housing on the same side of the vertical insulating plate 230. The other connecting plate 250 along the Y direction does not protrude beyond the encapsulation housing 221 on the same side to prevent interference with the installation of other electrical components. In one embodiment, another connecting plate 250 along the Y direction is disposed on either side of the vertical insulating plate 230. The length of the other connecting plate 250 on one side of the vertical insulating plate 230 is equal to the length of the encapsulation housing on the same side of the vertical insulating plate 230. The other connecting plate 250 along the Y direction does not protrude beyond the encapsulation housing 221 on the same side to prevent interference with the installation of other electrical components.

[0116] In one embodiment, see Figure 13 As shown, the number of the other connecting plates 250 is at least two, and the number of the other connecting plates 250 may include two, three, or four, etc. At least two other connecting plates 250 are located on both sides of the vertical insulating plate 230 along the arrangement direction of the at least two electrical connectors 222.

[0117] In the embodiments of this application, see Figure 13 As shown, one side of the power module along the positive X direction is the AC power terminal side. The AC power terminal side of the power module 220 includes two electrical connectors 222, both of which are copper busbar connectors 222a, including a positive copper busbar connector and a negative copper busbar connector. Taking the AC power terminal side of the power module as an example, and taking the number of the other connecting plates 250 as two, the number of the other connecting plates 250 is two, and the two other connecting plates 250 are arranged sequentially along the Y direction, distributed on both sides of the vertical insulating plate 230. The bottom walls of the two other connecting plates 250 along the Y direction are located on the same horizontal plane.

[0118] In one embodiment, the sum of the lengths of the two additional connecting plates 250 along the Y direction is greater than the sum of the lengths of two adjacent copper busbar connectors 222a and the length of the gap between two adjacent copper busbar connectors 222a, to protect each copper busbar connector 222a. The sum of the lengths of the two additional connecting plates 250 along the Y direction is less than the length of the encapsulation housing 221, and the length of the additional connecting plates 250 does not protrude beyond the length of the encapsulation housing 221 to prevent interference with the installation of other electrical components. In another embodiment, the sum of the lengths of the two additional connecting plates 250 along the Y direction is equal to the sum of the lengths of two adjacent copper busbar connectors 222a and the length of the gap between two adjacent copper busbar connectors 222a. In yet another embodiment, the sum of the lengths of the two additional connecting plates 250 along the Y direction is equal to the length of the encapsulation housing 221.

[0119] In one embodiment, there are two additional through holes. Two additional through holes 251 of the same shape and size are respectively provided on two additional connecting plates 250 along the Y direction. The two additional through holes 251 are distributed on both sides of the vertical insulating plate 230. Each additional through hole 251 is used to be arranged opposite to each copper busbar through hole 2221, and each additional through hole 251 is used to connect other electrical components.

[0120] Figure 14 This is a schematic diagram showing the relationship between the mounting plate, liquid cooler, and power module provided in the embodiments of this application.

[0121] In one embodiment, see Figure 14As shown, the vehicle power supply device 200 includes a fixing plate 260. The fixing plate 260, the liquid cooling radiator 210 and the power module 220 are arranged in sequence along the thickness direction of the liquid cooling radiator 210. The fixing plate 260 includes a third through hole 261. Another connecting plate 250 has a third protrusion 252 on its outer wall facing the fixing plate 260. The third protrusion 252 along the thickness direction of the liquid cooling radiator 210 is used to pass through the third through hole 261.

[0122] In the embodiments of this application, see Figure 14 As shown, the vehicle power supply device 200 includes a fixing plate, a fixing plate 260 along the Z direction, a liquid cooler 210 and a power module 220 are stacked in sequence, wherein the length of the fixing plate 260 along the X direction is greater than the length of the liquid cooler 210, and the length of the fixing plate 260 along the Y direction is greater than the length of the liquid cooler 210. The fixing plate 260 is used to fix the liquid cooler 210 and increase the stability of the liquid cooler 210.

[0123] In one embodiment, the fixing plate 260 and the liquid cooling radiator 210 can be fixed together by means of adhesive, clips and screws to fix the fixing plate 260 and the liquid cooling radiator 210 together and achieve a close fit between the fixing plate 260 and the liquid cooling radiator 210.

[0124] In the embodiments of this application, see Figure 14 As shown, a third through hole 261 is provided on the fixing plate 260, extending through the fixing plate 260 along the Z direction. The third through hole 261 is a circular hole, but it can also be of other shapes. A third protrusion 252 is provided on the outer wall surface of the other connecting plate 250 facing the fixing plate 260. The third protrusion 252 is a cylindrical protrusion, but it can also be of other shapes. The inner diameter of the third through hole 261 is larger than the outer diameter of the third protrusion 252. The third protrusion 252 along the Z direction passes through the third through hole 261 to fix the other connecting plate 250, preventing the other connecting plate 250 from sliding left and right, and ensuring the stability of the vertical insulating plate 230. In one embodiment, the third through hole 261 is a circular hole, the third protrusion 252 is a cylindrical protrusion, and the inner diameter of the third through hole 261 is equal to the outer diameter of the third protrusion 252.

[0125] In the embodiments of this application, please continue to refer to Figure 14As shown, a fourth through hole 262 is provided on the fixing plate 260. There are two fourth through holes 262. The fourth through hole 262 penetrates the fixing plate 260 along the Z direction. The fourth through hole 262 is a circular hole, but it can also be other shapes. The fourth through hole 262 and the other through hole 251 are arranged opposite to each other along the Z direction. The inner diameter of the fourth through hole 262 along the X direction is greater than or equal to the inner diameter of the other through hole 251, so as to ensure that the fourth through hole 262 and the other through hole 251 can be used to connect other electrical components.

[0126] In one embodiment, see further. Figure 13 As shown, the vehicle power supply device 200 includes at least three electrical connectors 222. The number of electrical connectors 222 may include three, four, etc. At least three electrical connectors 222 are located on the same side of the encapsulation housing 221 along one of the directions perpendicular to the thickness of the liquid cooler 210. At least one vertical insulating plate 230 is included between any two adjacent electrical connectors 222 along the arrangement direction of the at least three electrical connectors 222.

[0127] In the embodiments of this application, please continue to refer to Figure 12 As shown, one side of the power module 220 along the X-direction is the DC power terminal side, which is used to convert DC power into DC power output. The DC power terminal side of the power module 220 includes three electrical connectors 222, one of which is a copper busbar connector 222a, and the other two electrical connectors 222 are multiple pins 222b. Along the Y direction, one copper busbar connector 222a is located between the multiple pins 222b.

[0128] In one embodiment, see further. Figure 12 As shown, a vertical insulating plate 230 is provided between a copper busbar connector 222a and multiple pins 222b along the Y direction. That is, a vertical insulating plate 230 is provided between any two adjacent electrical connectors 222. The vertical insulating plate 230 extends along the Z direction. Along the X direction, the vertical insulating plate 230 is connected to the side wall of the package housing 221 corresponding to one side wall of the package housing 221. By providing a vertical insulating plate 230 between any two adjacent electrical connectors 222, the electrical clearance and creepage distance between any two adjacent electrical connectors 222 are increased, ensuring the safety between any two adjacent electrical connectors 222 and preventing short circuit of the power module 220.

[0129] Figure 15 Another schematic diagram illustrating the relationship between the power module and the vertical insulating plate provided in this application embodiment. Figure 16 This is a schematic diagram of a vertical insulating plate provided in an embodiment of this application. Figure 17 This is another schematic diagram of a vertical insulating plate provided in an embodiment of this application.

[0130] In one embodiment, see Figure 15 As shown, one side of the encapsulation housing 221 includes a groove 224 for accommodating one side of the vertical insulating plate 230. The length of the groove 224 along the arrangement direction of at least two electrical connectors 222 is equal to the length of the vertical insulating plate 230. The one side of the vertical insulating plate 230 along the arrangement direction of the electrical connectors 222 and the encapsulation housing 221 is used to fit against the bottom wall of the groove.

[0131] In the embodiments of this application, see Figure 15 As shown, the encapsulation housing 221 along the X direction includes two oppositely arranged sides. One side of the encapsulation housing 221 includes a groove 224. The groove 224 along the X direction is used to accommodate the side of the vertical insulating plate 230 facing the encapsulation housing 221. The length of the groove 224 along the Y direction is equal to the length of the side of the vertical insulating plate 230 accommodated by the groove 224. The side of the vertical insulating plate 230 along the opposite X direction abuts against the bottom wall of the groove 224 to fit the groove 224, so that the vertical insulating plate 230 and the groove 224 cooperate to prevent the power module 220 from short-circuiting or failing due to the generation of condensate or other impurities in the gap.

[0132] In one embodiment, the length of a groove 224 along the Z direction is equal to the length of the vertical insulating plate 230 contained in the groove 224. A side edge of one side of the vertical insulating plate 230 along the X-opposite direction abuts against the bottom wall of a groove 224, and an inner wall of the vertical insulating plate 230 along the X-opposite direction abuts against the bottom wall of a groove 224, so that the vertical insulating plate 230 and the groove 224 are interference fit.

[0133] In one embodiment, see Figure 15 and Figure 16As shown, one side of the power module along the positive X direction is the AC power terminal side. The AC power terminal side of the power module includes two electrical connectors 222, both of which are copper busbar connectors 222a. There is one vertical insulating plate 230. The side of the encapsulation housing 221 along the positive X direction includes one groove 224. This groove 224 is located between the two copper busbar connectors 222a, used to increase the electrical clearance and creepage distance between adjacent copper busbar connectors 222a, and to isolate creepage phenomena between the two adjacent electrical connectors 222. The vertical insulating plate 230 along the X direction includes one protrusion 233. The protrusion 233 is divided into... The vertical insulating plate 230 is perpendicular to one horizontal insulating plate 231 and another horizontal insulating plate 232. A protrusion 233 is parallel to a connecting plate 240. A groove 224 in the X direction is used to accommodate a protrusion 233 of the vertical insulating plate 230. The length of the groove 224 in the Y direction is equal to the length of the protrusion 233. The length of the groove 224 in the Z direction is equal to the length of the protrusion 233. The bottom wall of the groove 224 in the X direction abuts against the bottom wall of the protrusion 233, so that the protrusion 233 and the groove 224 are interference fit. This prevents the phenomenon of creepage between two adjacent copper busbar connectors 222a caused by the condensation or other impurities flowing into the gap, which could cause the power module 220 to short circuit or fail.

[0134] In one embodiment, see Figure 15 and Figure 17As shown, one side of the power module 220 along the X-direction is the DC power terminal side. The DC power terminal side of the power module 220 includes three electrical connectors 222, each including a copper busbar connector 222a and multiple pins 222b. Along the Y-direction, the copper busbar connector 222a is located between the multiple pins 222b. There are two vertical insulating plates 230. The side of the encapsulation housing 221 along the X-direction includes two grooves 224. The two grooves 224 are respectively disposed between the copper busbar connector 222a and the multiple pins 222b adjacent to the copper busbar connector 222a, to increase the gap and insulation distance between the copper busbar connector 222a and the multiple pins 222b adjacent to the copper busbar connector 222a. The vertical insulating plate 230 along the X-direction includes a protrusion 233 and a... There are two protrusions 233. One protrusion 233 is perpendicular to one horizontal insulating plate 231 and another horizontal insulating plate 232. The other protrusion 233 is parallel to a connecting plate 240. A groove 224 along the X direction is used to accommodate one protrusion 233 of the vertical insulating plate 230. The length of the groove 224 along the Y direction is equal to the length of the protrusion 233 it accommodates. The length of the groove 224 along the Z direction is equal to the length of the protrusion 233 it accommodates. The bottom wall of the groove 224 along the X direction abuts against the bottom wall of the protrusion 233 it accommodates, so that the groove 224 and the protrusion 233 it accommodates are interference fit. This prevents condensation or other impurities from flowing into the gap and causing creepage between adjacent copper busbar connectors 222a and multiple pins 222b, which could cause short circuits or failures in the power module 220.

[0135] Figure 18 Another schematic diagram of the vehicle-mounted power supply device provided in the embodiments of this application.

[0136] In one embodiment, see Figure 18 As shown, the number of power modules 220 is at least two, including two, three, or four, etc. Each power module 220 is arranged sequentially along the Y direction, and adjacent power modules 220 are fixed by bolts or other means to ensure the stability of the power modules 220.

[0137] In one embodiment, see Figure 18 As shown, there are two liquid cooling radiators 210. One liquid cooling radiator 210 is located on the side of the power module 220 in the positive Z direction, and the other liquid cooling radiator 210 is located on the side of the power module 220 in the negative Z direction. The two liquid cooling radiators 210 are sandwiched between the power module 220. Both liquid cooling radiators 210 are provided with water channels, and the water channels in the two liquid cooling radiators 210 are connected. Both are used to dissipate heat from the power module 220, improve the cooling effect, and make the heat dissipation efficiency better.

[0138] Figure 19 Another schematic diagram of the vehicle-mounted power supply device provided in the embodiments of this application.

[0139] In one embodiment, see Figure 19 As shown, the vehicle power supply device 200 includes a water-absorbing layer 270, and a liquid-cooled radiator 210 is used to fix the water-absorbing layer 270. The water-absorbing layer 270, the liquid-cooled radiator 210 and the power module 220 are arranged in sequence along the thickness direction of the liquid-cooled radiator 210.

[0140] In the embodiments of this application, see Figure 19 As shown, the vehicle power supply device 200 includes a water-absorbing layer 270. The water-absorbing layer 270, the liquid-cooled radiator 210 and the power module 220 are arranged in sequence along the Z direction. The length of the water-absorbing layer 270 along the X direction is less than the length of the liquid-cooled radiator 210, and the length of the water-absorbing layer 270 along the Y direction is less than the length of the liquid-cooled radiator 210. The liquid-cooled radiator 210 is used to fix the water-absorbing layer 270 and increase the stability of the water-absorbing layer 270.

[0141] In one embodiment, the absorbent layer 270 and the liquid-cooled radiator 210 can be fixed together by adhesive to fix the absorbent layer 270 and the liquid-cooled radiator 210 together and achieve a close fit between the absorbent layer 270 and the liquid-cooled radiator 210.

[0142] In one embodiment, the absorbent layer 270 is made of absorbent materials such as porous foam and sponge, and is used to absorb the condensate generated by the liquid cooler 210 during the cooling process of the power module 220, so as to prevent the condensate generated by the liquid cooler 210 from flowing onto the power module 220 and causing the power module 220 to short-circuit.

[0143] In one embodiment, there are two liquid-cooled radiators 210 and two water-absorbing layers 270. Each liquid-cooled radiator 210 is provided with a water-absorbing layer 270 on the side away from the power module 220 along the Z direction, which is used to absorb the condensate generated by the liquid-cooled radiator 210 in the process of cooling the power module 220.

[0144] This application provides a powertrain embodiment. See also... Figure 1 and Figure 2 As shown, the powertrain 10 includes a drive motor 100, an on-board power supply unit 200, and a reducer 300. In one embodiment, the reducer 300 includes a single-speed reducer, a two-speed reducer, or a gearbox. In another embodiment, the reducer 300 includes an input shaft 310, an intermediate shaft 320, and an output shaft 330. Figure 2As shown, the reducer 300 includes an input shaft 310, an intermediate shaft 320, and an output shaft 330. The input shaft 310 is used to drive the drive motor 100 and the intermediate shaft 320, the intermediate shaft 320 is used to drive the output shaft 330, and the output shaft 330 is used to drive the wheels 40. In one embodiment, the reducer 300 drives two wheels 40 respectively via two half-shafts 50. In one embodiment, the on-board power supply device 200 is used to receive AC power and convert it into DC power to charge the power battery 30. In one embodiment, the on-board power supply device 200 is used to receive high-voltage DC power and supply DC power to charge the power battery 30. In one embodiment, the on-board power supply device includes an on-board charger, a motor controller, a DC-DC converter, and other on-board power supply components.

[0145] In one embodiment, the on-board power supply device 200 receives DC power from the power battery 30, converts it into AC power, and transmits it to the drive motor 100. The drive motor 100 converts electrical energy into mechanical energy and is connected to a reducer 300 for transmission. The drive motor 100 drives the wheels 40 of the electric vehicle 1 to rotate through the reducer 300. In another embodiment, the on-board charger converts AC power from the power grid into DC power and transmits it to the power battery 30 for charging. In yet another embodiment, the on-board charger includes a DC-DC converter module that converts high-voltage DC power into low-voltage DC power to power the low-voltage electrical systems within the electric vehicle 1, such as lights, dashboard, or air conditioning.

[0146] Figure 3 This is an assembly diagram of the powertrain provided in an embodiment of this application. Figure 4 This is a schematic diagram of the electrical control slot of the powertrain provided in the embodiments of this application.

[0147] In one embodiment, see Figure 3 and Figure 4As shown, the housing 400 of the powertrain 10 includes an electrical control slot 410, a motor slot 420, and a reducer slot 430. This application provides an on-board power supply device. In this embodiment, the on-board power supply device 200 uses a motor controller as an example. The motor controller is only one embodiment for illustrative purposes. In practical applications, the on-board power supply device is not limited to a motor controller. Other similar structures, such as other on-board power supply devices with vertical insulating plates including liquid-cooled radiators and power modules, are all within the scope of protection of this application. The on-board power supply device 200 is part of the powertrain 10 and is integrated into the housing 400 of the powertrain 10. The electrical control slot 410 of the powertrain is used to accommodate multiple electrical components of the motor controller, including components or combinations of components such as capacitors or inductors. These electrical components are used for power conversion within the motor controller. The motor slot 420 and reducer slot 430 of the powertrain are distributed on both axial sides of the powertrain housing 400. The motor slot 420 is used to accommodate the drive motor of the powertrain 10. The axis of the drive motor is parallel to the axis of the motor slot 420, and the slot opening orientation of the motor slot 420 and the slot opening orientation of the reducer slot 430 are opposite along the axial direction of the housing 400. The powertrain housing 400 includes a motor end cover and a reducer end cover, wherein the motor end cover is used to enclose the motor slot 420, and the reducer end cover is used to enclose the reducer slot 430. The electrical control slot 410 is located on the radial side of the motor slot 420. The inner wall of the electrical control slot 410 can be part of the outer wall surface of the motor slot 420, thereby forming a large-capacity receiving cavity to meet the installation requirements of the on-board power supply device 200. In one embodiment, the housing 400 of the powertrain 10 and the housing of the vehicle power supply device 200 are an integral structure, that is, the housing of the vehicle power supply device 200 is the housing 400 of the powertrain 10. The housing 400 includes an electrical control slot 410, which is used to accommodate multiple electrical components of the vehicle power supply device 200. The electrical components refer to components or combinations of components such as capacitors and inductors, which are located inside the vehicle power supply device 200 to perform power conversion.

[0148] Figure 5 This is an exploded schematic diagram of the vehicle-mounted power supply device provided in the embodiments of this application. Figure 6 This is another schematic diagram of the vehicle-mounted power supply device provided in the embodiments of this application. Figure 7 This is a schematic diagram illustrating the relationship between the power module and the vertical insulating plate provided in an embodiment of this application.

[0149] In one embodiment, see Figure 5As shown, the vehicle power supply device 200 includes a circuit board 201, a liquid cooler 210, a power module 220, and a housing 202. The circuit board 201, liquid cooler 210, and power module 220 are integrated within the housing 202, optimizing space utilization. The circuit board 201, liquid cooler 210, and power module 220 are stacked along the thickness of the liquid cooler 210, achieving an efficient heat dissipation path. The circuit board 201 controls the operation of the power module 220, and the liquid cooler 210 dissipates heat from the circuit board 201 and power module 220 to ensure their normal operation. The number of liquid coolers 210 can be one, two, or three, etc. Using multiple liquid coolers 210 improves the heat dissipation effect on the power module 220. In one embodiment, the liquid cooler 210 can be a single-layer heat sink structure. In one embodiment, the liquid-cooled heat sink 210 can be a double-layer heat sink structure, with the double-layer heat sink symmetrically arranged on both sides of the power module 220, which is beneficial to improve the heat dissipation effect of the heat sink on the power module 220 and ensures uniform temperature.

[0150] In one embodiment, see Figure 6 and Figure 7 As shown, the vehicle power supply device 200 includes a liquid-cooled heat sink 210 and a power module 220. The liquid-cooled heat sink 210 and the power module 220 are stacked along the thickness direction of the liquid-cooled heat sink 210, achieving an efficient heat dissipation path. The thickness direction of the liquid-cooled heat sink 210 and the axial direction perpendicular to the electrical control groove 410 are the Z-direction, and the liquid-cooled heat sink 210 is located on one side of the power module 220 in the positive Z-direction. In one embodiment, the power module 220 includes an insulated gate bipolar transistor (IGBT) module, a silicon carbide power module, etc., suitable for high-voltage and high-power scenarios in new energy vehicles.

[0151] In this embodiment, an IGBT module is used as an example of a power module. The IGBT module is only one embodiment for illustrative purposes; in practical applications, the power module is not limited to an IGBT module. Other similar power modules are all within the scope of protection of this application. In one embodiment, the power module 220 includes a housing 221 and at least two electrical connectors 222. The housing 221 protects the internal structure of the power module 220 and also provides insulation and heat conduction. The at least two electrical connectors 222 are located on the same side of the housing 221 along one direction perpendicular to the thickness of the liquid cooler 210. The direction from the housing 221 towards the electrical connectors 222 is the positive X direction, and the at least two electrical connectors 222 are located at opposite ends of the X direction. The arrangement direction of the at least two electrical connectors 222 is the Y direction. In one embodiment, one side of the housing 221 along the X direction is the AC power terminal side, used to convert AC power to DC power output, and the other side of the housing 221 along the X direction is the DC power terminal side, used to convert DC power to DC power output. In one embodiment, the electrical connector 222 includes a copper busbar connector, pins, etc., and the electrical connector 222 is used to electrically connect with the package housing 221.

[0152] In one embodiment, the housing 400 of the powertrain 10 and the housing of the vehicle power supply device 200 are an integral structure, that is, the housing of the vehicle power supply device 200 is the housing 400 of the powertrain 10. The housing 400 includes an electrical control slot 410, which is used to accommodate multiple electrical components of the vehicle power supply device 200. The electrical components refer to components or combinations of components such as capacitors and inductors, which are located inside the vehicle power supply device 200 to perform power conversion.

[0153] In one embodiment, see Figure 8 As shown, the power module 220 also includes a transverse insulating plate 231 extending along the length of the liquid cooler 210.

[0154] In this embodiment, one side of the power module along the positive X direction is the AC power terminal side. The AC power terminal side of the power module 220 includes two electrical connectors 222, both of which are copper busbar connectors 222a, including a positive copper busbar connector and a negative copper busbar connector. The power module 220 includes a transverse insulating plate 231 extending along the reverse X direction. A transverse insulating plate 231 extends along the Y direction towards the two electrical connectors 222 respectively. A transverse insulating plate 231 and the liquid cooling heat sink 210 are located on the same side of the encapsulation housing 221 along the positive Z direction. The transverse insulating plate 231 and the encapsulation housing 221 are fitted together to prevent two adjacent copper busbar connectors 222a from creeping along the surface of the encapsulation housing 221, increase the creepage distance between two adjacent copper busbar connectors 222a, and prevent short circuits between two adjacent copper busbar connectors 222a that could cause a short circuit in the power module 220.

[0155] In one embodiment, the transverse insulating plate 231 and the encapsulation housing 221 are separable independent structures. The transverse insulating plate 231 and the encapsulation housing 221 can be fixed together by means of adhesive, snaps and screws to achieve a close fit between the transverse insulating plate 231 and the encapsulation housing 221.

[0156] In the embodiments of this application, see Figure 8 As shown, one side of the power module along the X-direction is the DC power terminal side. The DC power terminal side of the power module 220 includes three electrical connectors 222. The three electrical connectors 222 include a copper busbar connector 222a and multiple pins 222b. The copper busbar connector 222a is located between the multiple pins 222b. There are two transverse insulating plates 231. The power module 220 includes a transverse insulating plate 231 extending along the positive X-direction. Along the positive Z-direction, a transverse insulating plate 231 and the liquid cooling heat sink 210 are located on the same side of the package housing 221. The transverse insulating plate 231 and the package housing 221 are fitted together to prevent two adjacent electrical connectors 222 from creeping along the surface of the package housing 221, increase the creepage distance between two adjacent electrical connectors 222, and prevent short circuits between two adjacent electrical connectors 222 that could cause a short circuit in the power module 220.

[0157] In one embodiment, see Figure 9 As shown, the sum of the lengths of two adjacent electrical connectors 222 along the arrangement direction of at least two electrical connectors 222 and the length of the gap between two adjacent electrical connectors 222 is less than or equal to the length of a transverse insulating plate 231, and the length of a transverse insulating plate 231 is less than the length of the encapsulation housing 221.

[0158] In the embodiments of this application, see Figure 9As shown, one side of the power module along the positive X direction is the AC power terminal side. The AC power terminal side of the power module 220 includes two electrical connectors 222, both of which are copper busbar connectors 222a, including a positive copper busbar connector and a negative copper busbar connector. The sum of the length of two adjacent copper busbar connectors 222a and the length of the gap between adjacent copper busbar connectors 222a is less than or equal to the length of a transverse insulating plate 231. A transverse insulating plate 231 can completely protect the encapsulation housing 221 and the copper busbar connectors 222a to prevent two adjacent copper busbar connectors 222a from creeping along the surface of the encapsulation housing 221, increase the creepage distance between two adjacent copper busbar connectors 222a, and prevent the power module 220 from short-circuiting. The length of a transverse insulating plate 231 along the Y direction is less than the length of the encapsulation housing 221. The length of a transverse insulating plate 231 will not protrude beyond the length of the encapsulation housing 221 to prevent interference with the installation of other electrical components.

[0159] In the embodiments of this application, see Figure 9 As shown, one side of the power module along the X-direction is the DC power terminal side. The DC power terminal side of the power module 220 includes three electrical connectors 222. Each electrical connector 222 includes a copper busbar connector 222a and multiple pins 222b. The copper busbar connector 222a is located between the multiple pins 222b. A transverse insulating plate 231 extends along the Y-direction towards the direction where the copper busbar connector 222a is located. The length of the copper busbar connector 222a is less than or equal to the length of the transverse insulating plate 231. The insulating plate 231 can completely protect the package housing 221 and the copper busbar connector 222a to prevent creepage between adjacent copper busbar connectors 222a and multiple pins 222b along the surface of the package housing 221, increase the creepage distance between two adjacent electrical connectors 222, and prevent the power module 220 from short-circuiting. The length of a transverse insulating plate 231 in the Y direction is less than the length of the package housing 221, and the length of a transverse insulating plate 231 will not protrude beyond the length of the package housing 221 to prevent interference with the installation of other electrical components.

[0160] In one embodiment, see further. Figure 9 As shown, a transverse insulating plate 231 includes a protrusion 2311 extending along the Y direction, and the length of the protrusion 2311 along the Y direction is less than or equal to the length of the transverse insulating plate 231. The length of the protrusion 2311 along the X direction is less than the length of the transverse insulating plate 231. It is used to cooperate with other electrical components or other fixed plates to increase the insulation distance between the transverse insulating plate 231 and other electrical components.

[0161] In one embodiment, a transverse insulating plate 231 extends a certain length in the opposite X direction. The sum of the length of the transverse insulating plate 231 and the length of the liquid-cooled radiator 210 in the X direction is less than or equal to the length of the power module 220, so as to save installation space.

[0162] In one embodiment, see Figure 10 As shown, the vertical insulating plate 230 along the arrangement direction of the electrical connector 222 and the encapsulation housing 221 includes another horizontal insulating plate 232. The other horizontal insulating plate 232 along the thickness direction of the liquid cooler 210 is located on both sides of the encapsulation housing 221 along with the horizontal insulating plate 231, for attaching the encapsulation housing 221.

[0163] In this embodiment, one side of the power module along the positive X direction is the AC power terminal side. The AC power terminal side of the power module includes two electrical connectors 222, both of which are copper busbar connectors 222a, including a positive copper busbar connector and a negative copper busbar connector. The vertical insulating plate 230 includes another horizontal insulating plate 232 extending along the opposite X direction. Along the Y direction, one horizontal insulating plate 231 extends in the direction where the two electrical connectors 222 are located. Along the thickness direction of the liquid-cooled heat sink 210, another horizontal insulating plate 232 is used to be located on both sides of the encapsulation housing 221 along with the horizontal insulating plate 231. The other horizontal insulating plate 232 and the encapsulation housing 221 are attached together, and together with the horizontal insulating plate 231, they are attached to the encapsulation housing 221 to ensure the stability of the horizontal insulating plate 231 and the other horizontal insulating plate 232 on the vehicle power supply device 200 during operation.

[0164] In one embodiment, another transverse insulating plate 232 extends a certain length in the opposite X direction. The length of the other transverse insulating plate 232 extending in the X direction is equal to the length of the transverse insulating plate 231 extending.

[0165] In the embodiments of this application, see Figure 10 As shown, one side of the power module along the X-direction is the DC power terminal side. The DC power terminal side of the power module 220 includes three electrical connectors 222. The three electrical connectors 222 include a copper busbar connector 222a and multiple pins 222b. The copper busbar connector 222a is located between the multiple pins 222b. Another transverse insulating plate 232 extends along the X-direction. Along the thickness direction of the liquid cooler 210, another transverse insulating plate 232 is used to be located on both sides of the package housing 221 along with a transverse insulating plate 231. The other transverse insulating plate 232 and the package housing 221 are attached together, and together with the transverse insulating plate 231, they are attached to the package housing 221 to ensure the stability of the transverse insulating plate 231 and the other transverse insulating plate 232 on the vehicle power supply device 200 during operation.

[0166] In one embodiment, see Figure 10 As shown, the sum of the lengths of two adjacent electrical connectors 222 and the length of the gap between two adjacent electrical connectors 222 is less than or equal to the length of another transverse insulating plate 232. Along the Y direction, the length of the other transverse insulating plate 232 is less than the length of the encapsulation housing 221, and the length of the other transverse insulating plate 232 is equal to the length of one transverse insulating plate 231. In one embodiment, the length of the other transverse insulating plate along the Y direction is less than the length of one transverse insulating plate 231. In another embodiment, the length of the other transverse insulating plate along the Y direction is greater than the length of one transverse insulating plate 231.

[0167] In one embodiment, see further. Figure 10 As shown, a transverse insulating plate 231 and another transverse insulating plate 232 are arranged opposite to each other along the Z direction. Specifically, the transverse insulating plate 231 and the other transverse insulating plate 232 are respectively attached to both sides of the encapsulation housing 221 along the Z direction. By setting the other transverse insulating plate 232, the protection area of ​​the encapsulation housing 221 can be increased. The transverse insulating plate 231 and the other transverse insulating plate 232 can clamp the encapsulation housing 221, preventing the transverse insulating plate 231 and the other transverse insulating plate 232 from falling off during the operation of the vehicle power supply device 200. This ensures the stability of the transverse insulating plate 231 and the other transverse insulating plate 232 on the vehicle power supply device 200 during the operation, better protects the power module 220, and prevents the power module 220 from short-circuiting.

[0168] In one embodiment, see Figure 11 As shown, the vehicle power supply device 200 includes a connecting plate 240, which is used to connect a transverse insulating plate 231 and another transverse insulating plate 232 along the thickness direction of the liquid cooler 210.

[0169] In the embodiments of this application, please continue to refer to Figure 11 As shown, the vehicle power supply device 200 includes a connecting plate 240. The connecting plate 240 extends along the Z direction and is fitted to the plane. The end face of one transverse insulating plate 231 and the end face of another transverse insulating plate 232 along the positive X direction are located on the same side of a plane of the encapsulation housing 221. The connecting plate 240 connects one transverse insulating plate 231 and another transverse insulating plate 232 along the Z direction to facilitate fixing one transverse insulating plate 231 and another transverse insulating plate 232.

[0170] In one embodiment, a connecting plate 240 has a certain width along the positive X direction, and the length of a connecting plate 240 along the Z direction is equal to the sum of the lengths of a transverse insulating plate 231, another transverse insulating plate 232, and the encapsulation housing 221. The length of a connecting plate 240 does not protrude beyond the lengths of a transverse insulating plate 231 and another transverse insulating plate 232 to prevent interference with the installation of other electrical components.

[0171] In one embodiment, a transverse insulating plate 231, another transverse insulating plate 232, and a connecting plate 240 together form a receiving groove. The opening of the receiving groove along the X direction faces one side wall of the encapsulation housing 221, so that the receiving groove clamps the two sides of the encapsulation housing 221 along the Z direction, thereby enhancing the connection stability between the connecting plate 240 and the multiple electrical connectors 222, increasing the creepage distance between two adjacent electrical connectors 222 along the surface of the encapsulation housing 221, and enhancing the protection of the encapsulation housing 221.

[0172] In one embodiment, a connecting plate 240, a transverse insulating plate 231, and another transverse insulating plate 232 are fixedly connected. The connecting plate 240, the transverse insulating plate 231, and the other transverse insulating plate 232 can be fixed by means of adhesive, clips, or bolts. Alternatively, the connecting plate 240, the transverse insulating plate 231, and the other transverse insulating plate 232 are an integral structure, which is integrally injection molded and has high connection strength.

[0173] In one embodiment, see Figure 12 As shown, a connecting plate 240 includes a through hole 241 for passing through the connecting plate 240 along the arrangement direction of the electrical connector 222 and the encapsulation housing 221, and for accommodating the electrical connector 222.

[0174] In the embodiments of this application, see Figure 12As shown, one side of the power module along the positive X direction is the AC power terminal side. The AC power terminal side of the power module 220 includes two electrical connectors 222, both of which are copper busbar connectors 222a, including a positive copper busbar connector and a negative copper busbar connector. Taking the AC power terminal side of the power module as an example, a through hole 241 is provided on a connecting plate along the X direction, and the through hole 241 penetrates a connecting plate 240 along the X direction. A through hole 241 is strip-shaped and is used to accommodate a copper busbar connector 222a. The copper busbar connector 222a passes through the through hole 241. The length of the through hole 241 in the Y direction is equal to the length of the copper busbar connector 222a, and the length of the through hole 241 in the Z direction is equal to the length of the copper busbar connector 222a. Along the Y direction, the two sides of the copper busbar connector 222a are abutted against the two sides of the inner wall of the through hole 241, and along the Z direction, the two sides of the copper busbar connector 222a are abutted against the two sides of the inner wall of the through hole 241 to increase the connection stability between the copper busbar connector 222a and the through hole 241 and prevent the copper busbar connector 222a from sliding. In one embodiment, the length of the through hole 241 in the Y direction is greater than the length of the copper busbar connector 222a, and the length of the through hole 241 in the Z direction is greater than the length of the copper busbar connector 222a. The through hole 241 is used to accommodate one copper busbar connector 222a.

[0175] In one embodiment, see further. Figure 13 As shown, the vehicle power supply device 200 includes at least three electrical connectors 222. The number of electrical connectors 222 may include three, four, etc. At least three electrical connectors 222 are located on the same side of the encapsulation housing 221 along one of the directions perpendicular to the thickness of the liquid cooler 210.

[0176] In the embodiments of this application, please continue to refer to Figure 12 As shown, one side of the power module 220 along the X-direction is the DC power terminal side, which is used to convert DC power into DC power output. The DC power terminal side of the power module 220 includes three electrical connectors 222, one of which is a copper busbar connector 222a, and the other two electrical connectors 222 are multiple pins 222b. Along the Y direction, one copper busbar connector 222a is located between the multiple pins 222b.

[0177] Figure 18 Another schematic diagram of the vehicle-mounted power supply device provided in the embodiments of this application.

[0178] In one embodiment, see Figure 18As shown, the number of power modules 220 is at least two, including two, three, or four, etc. Each power module 220 is arranged sequentially along the Y direction, and adjacent power modules 220 are fixed by bolts or other means to ensure the stability of the power modules 220.

[0179] In one embodiment, see Figure 18 As shown, there are two liquid cooling radiators 210. One liquid cooling radiator 210 is located on the side of the power module 220 in the positive Z direction, and the other liquid cooling radiator 210 is located on the side of the power module 220 in the negative Z direction. The two liquid cooling radiators 210 are sandwiched between the power module 220. Both liquid cooling radiators 210 are provided with water channels, and the water channels in the two liquid cooling radiators 210 are connected. Both are used to dissipate heat from the power module 220, improve the cooling effect, and make the heat dissipation efficiency better.

[0180] Figure 19 Another schematic diagram of the vehicle-mounted power supply device provided in the embodiments of this application.

[0181] In one embodiment, see Figure 19 As shown, the vehicle power supply device 200 includes a water-absorbing layer 270, and a liquid-cooled radiator 210 is used to fix the water-absorbing layer 270. The water-absorbing layer 270, the liquid-cooled radiator 210 and the power module 220 are arranged in sequence along the thickness direction of the liquid-cooled radiator 210.

[0182] In the embodiments of this application, see Figure 19 As shown, the vehicle power supply device 200 includes a water-absorbing layer 270. The water-absorbing layer 270, the liquid-cooled radiator 210 and the power module 220 are arranged in sequence along the Z direction. The length of the water-absorbing layer 270 along the X direction is less than the length of the liquid-cooled radiator 210, and the length of the water-absorbing layer 270 along the Y direction is less than the length of the liquid-cooled radiator 210. The liquid-cooled radiator 210 is used to fix the water-absorbing layer 270 and increase the stability of the water-absorbing layer 270.

[0183] In one embodiment, the absorbent layer 270 and the liquid-cooled radiator 210 can be fixed together by adhesive to fix the absorbent layer 270 and the liquid-cooled radiator 210 together and achieve a close fit between the absorbent layer 270 and the liquid-cooled radiator 210.

[0184] In one embodiment, the absorbent layer 270 is made of absorbent materials such as porous foam and sponge, and is used to absorb the condensate generated by the liquid cooler 210 during the cooling process of the power module 220, so as to prevent the condensate generated by the liquid cooler 210 from flowing onto the power module 220 and causing the power module 220 to short-circuit.

[0185] In one embodiment, there are two liquid-cooled radiators 210 and two water-absorbing layers 270. Each liquid-cooled radiator 210 is provided with a water-absorbing layer 270 on the side away from the power module 220 along the Z direction, which is used to absorb the condensate generated by the liquid-cooled radiator 210 in the process of cooling the power module 220.

[0186] This application provides a powertrain embodiment. See also... Figure 1 and Figure 2 As shown, the powertrain 10 includes a drive motor 100, an on-board power supply unit 200, and a reducer 300. In one embodiment, the reducer 300 includes a single-speed reducer, a two-speed reducer, or a gearbox. In another embodiment, the reducer 300 includes an input shaft 310, an intermediate shaft 320, and an output shaft 330. Figure 2 As shown, the reducer 300 includes an input shaft 310, an intermediate shaft 320, and an output shaft 330. The input shaft 310 is used to drive the drive motor 100 and the intermediate shaft 320, the intermediate shaft 320 is used to drive the output shaft 330, and the output shaft 330 is used to drive the wheels 40. In one embodiment, the reducer 300 drives two wheels 40 respectively via two half-shafts 50. In one embodiment, the on-board power supply device 200 is used to receive AC power and convert it into DC power to charge the power battery 30. In one embodiment, the on-board power supply device 200 is used to receive high-voltage DC power and supply DC power to charge the power battery 30. In one embodiment, the on-board power supply device includes an on-board charger, a motor controller, a DC-DC converter, and other on-board power supply components.

[0187] In one embodiment, the on-board power supply device 200 receives DC power from the power battery 30, converts it into AC power, and transmits it to the drive motor 100. The drive motor 100 converts electrical energy into mechanical energy and is connected to a reducer 300 for transmission. The drive motor 100 drives the wheels 40 of the electric vehicle 1 to rotate through the reducer 300. In another embodiment, the on-board charger converts AC power from the power grid into DC power and transmits it to the power battery 30 for charging. In yet another embodiment, the on-board charger includes a DC-DC converter module that converts high-voltage DC power into low-voltage DC power to power the low-voltage electrical systems within the electric vehicle 1, such as lights, dashboard, or air conditioning.

[0188] Figure 3 This is an assembly diagram of the powertrain provided in an embodiment of this application. Figure 4 This is a schematic diagram of the electrical control slot of the powertrain provided in the embodiments of this application.

[0189] In one embodiment, see Figure 3 and Figure 4As shown, the housing 400 of the powertrain 10 includes an electrical control slot 410, a motor slot 420, and a reducer slot 430. This application provides an on-board power supply device. In this embodiment, the on-board power supply device 200 uses a motor controller as an example. The motor controller is only one embodiment for illustrative purposes. In practical applications, the on-board power supply device is not limited to a motor controller. Other similar structures, such as other on-board power supply devices with vertical insulating plates including liquid-cooled radiators and power modules, are all within the scope of protection of this application. The on-board power supply device 200 is part of the powertrain 10 and is integrated into the housing 400 of the powertrain 10. The electrical control slot 410 of the powertrain is used to accommodate multiple electrical components of the motor controller, including components or combinations of components such as capacitors or inductors. These electrical components are used for power conversion within the motor controller. The motor slot 420 and reducer slot 430 of the powertrain are distributed on both axial sides of the powertrain housing 400. The motor slot 420 is used to accommodate the drive motor of the powertrain 10. The axis of the drive motor is parallel to the axis of the motor slot 420, and the slot opening orientation of the motor slot 420 and the slot opening orientation of the reducer slot 430 are opposite along the axial direction of the housing 400. The powertrain housing 400 includes a motor end cover and a reducer end cover, wherein the motor end cover is used to enclose the motor slot 420, and the reducer end cover is used to enclose the reducer slot 430. The electrical control slot 410 is located on the radial side of the motor slot 420. The inner wall of the electrical control slot 410 can be part of the outer wall surface of the motor slot 420, thereby forming a large-capacity receiving cavity to meet the installation requirements of the on-board power supply device 200. In one embodiment, the housing 400 of the powertrain 10 and the housing of the vehicle power supply device 200 are an integral structure, that is, the housing of the vehicle power supply device 200 is the housing 400 of the powertrain 10. The housing 400 includes an electrical control slot 410, which is used to accommodate multiple electrical components of the vehicle power supply device 200. The electrical components refer to components or combinations of components such as capacitors and inductors, which are located inside the vehicle power supply device 200 to perform power conversion.

[0190] Figure 5 This is an exploded schematic diagram of the vehicle-mounted power supply device provided in the embodiments of this application. Figure 6 This is another schematic diagram of the vehicle-mounted power supply device provided in the embodiments of this application. Figure 7 This is a schematic diagram illustrating the relationship between the power module and the vertical insulating plate provided in an embodiment of this application.

[0191] In one embodiment, see Figure 5As shown, the vehicle power supply device 200 includes a circuit board 201, a liquid cooler 210, a power module 220, and a housing 202. The circuit board 201, liquid cooler 210, and power module 220 are integrated within the housing 202, optimizing space utilization. The circuit board 201, liquid cooler 210, and power module 220 are stacked along the thickness of the liquid cooler 210, achieving an efficient heat dissipation path. The circuit board 201 controls the operation of the power module 220, and the liquid cooler 210 dissipates heat from the circuit board 201 and power module 220 to ensure their normal operation. The number of liquid coolers 210 can be one, two, or three, etc. Using multiple liquid coolers 210 improves the heat dissipation effect on the power module 220. In one embodiment, the liquid cooler 210 can be a single-layer heat sink structure. In one embodiment, the liquid-cooled heat sink 210 can be a double-layer heat sink structure, with the double-layer heat sink symmetrically arranged on both sides of the power module 220, which is beneficial to improving the heat dissipation effect of the heat sink on the power module 220 and ensuring uniform temperature.

[0192] In one embodiment, see Figure 6 and Figure 7 As shown, the vehicle power supply device 200 includes a liquid-cooled heat sink 210 and a power module 220. The liquid-cooled heat sink 210 and the power module 220 are stacked along the thickness direction of the liquid-cooled heat sink 210, achieving an efficient heat dissipation path. The thickness direction of the liquid-cooled heat sink 210 and the axial direction perpendicular to the electrical control groove 410 are the Z-direction, and the liquid-cooled heat sink 210 is located on one side of the power module 220 in the positive Z-direction. In one embodiment, the power module 220 includes an insulated gate bipolar transistor (IGBT) module, a silicon carbide power module, etc., suitable for high-voltage and high-power scenarios in new energy vehicles.

[0193] In this embodiment, an IGBT module is used as an example of a power module. The IGBT module is only one embodiment for illustrative purposes; in practical applications, the power module is not limited to an IGBT module. Other similar power modules are all within the scope of protection of this application. In one embodiment, the power module 220 includes a housing 221 and at least two electrical connectors 222. The housing 221 protects the internal structure of the power module 220 and also provides insulation and heat conduction. The at least two electrical connectors 222 are located on the same side of the housing 221 along one direction perpendicular to the thickness of the liquid cooler 210. The direction from the housing 221 towards the electrical connectors 222 is the positive X direction, and the at least two electrical connectors 222 are located at opposite ends of the X direction. The arrangement direction of the at least two electrical connectors 222 is the Y direction. In one embodiment, one side of the housing 221 along the X direction is the AC power terminal side, used to convert AC power to DC power output, and the other side of the housing 221 along the X direction is the DC power terminal side, used to convert DC power to DC power output. In one embodiment, the electrical connector 222 includes a copper busbar connector, pins, etc., and the electrical connector 222 is used to electrically connect with the package housing 221.

[0194] In one embodiment, the housing 400 of the powertrain 10 and the housing of the vehicle power supply device 200 are an integral structure, that is, the housing of the vehicle power supply device 200 is the housing 400 of the powertrain 10. The housing 400 includes an electrical control slot 410, which is used to accommodate multiple electrical components of the vehicle power supply device 200. The electrical components refer to components or combinations of components such as capacitors and inductors, which are located inside the vehicle power supply device 200 to perform power conversion.

[0195] In one embodiment, the liquid-cooled radiator 210 includes a water channel plate and a water channel within it. The water channel circulates coolant, which dissipates heat from the power module 220. In another embodiment, the liquid-cooled radiator 210 and the power module 220 can be fixed together using clips, screws, or other means to achieve a close fit and improve the heat dissipation efficiency of the liquid-cooled radiator 210 on the power module 220.

[0196] Figure 19 Another schematic diagram of the vehicle-mounted power supply device provided in the embodiments of this application.

[0197] In one embodiment, see Figure 19 As shown, the vehicle power supply device 200 includes a water-absorbing layer 270, and a liquid-cooled radiator 210 is used to fix the water-absorbing layer 270. The water-absorbing layer 270, the liquid-cooled radiator 210 and the power module 220 are arranged in sequence along the thickness direction of the liquid-cooled radiator 210.

[0198] In the embodiments of this application, see Figure 19 As shown, the vehicle power supply device 200 includes a water-absorbing layer 270. The water-absorbing layer 270, the liquid-cooled radiator 210 and the power module 220 are arranged in sequence along the Z direction. The length of the water-absorbing layer 270 along the X direction is less than the length of the liquid-cooled radiator 210, and the length of the water-absorbing layer 270 along the Y direction is less than the length of the liquid-cooled radiator 210. The liquid-cooled radiator 210 is used to fix the water-absorbing layer 270 and increase the stability of the water-absorbing layer 270.

[0199] In one embodiment, the absorbent layer 270 and the liquid-cooled radiator 210 can be fixed together by adhesive to fix the absorbent layer 270 and the liquid-cooled radiator 210 together and achieve a close fit between the absorbent layer 270 and the liquid-cooled radiator 210.

[0200] In one embodiment, the absorbent layer 270 is made of absorbent materials such as porous foam and sponge, and is used to absorb the condensate generated by the liquid cooler 210 during the cooling process of the power module 220, so as to prevent the condensate generated by the liquid cooler 210 from flowing onto the power module 220 and causing the power module 220 to short-circuit.

[0201] In one embodiment, there is one liquid-cooled radiator 210 and two water-absorbing layers 270. A water-absorbing layer 270 is provided on the side of the liquid-cooled radiator 210 facing the power module 220 along the Z direction, and a water-absorbing layer 270 is also provided on the side of the liquid-cooled radiator 210 away from the power module 220, for absorbing the condensate generated by the liquid-cooled radiator 210 in the process of cooling the power module 220.

[0202] In one embodiment, there are two liquid-cooled radiators 210 and two water-absorbing layers 270. Each liquid-cooled radiator 210 is provided with a water-absorbing layer 270 on the side away from the power module 220 along the Z direction, which is used to absorb the condensate generated by the liquid-cooled radiator 210 in the process of cooling the power module 220.

[0203] In one embodiment, see Figure 11 As shown, the vehicle power supply device 200 includes a connecting plate 240, which is configured to be attached to the encapsulation housing 221 of the vehicle power supply device 200 along the thickness direction of the liquid cooler 210.

[0204] In the embodiments of this application, please continue to refer to Figure 11As shown, the vehicle power supply device 200 includes a connecting plate 240, which extends along the Z direction and is fitted to the vehicle power supply device 200. In one embodiment, the connecting plate 240 has a certain width along the positive X direction, and the length of the connecting plate 240 along the Z direction is equal to the thickness of the encapsulation housing 221 of the vehicle power supply device 200. The length of the connecting plate 240 along the X direction does not protrude beyond the length of the encapsulation housing 221 to prevent interference with the installation of other electrical components.

[0205] In one embodiment, a connecting plate 240 and a housing 221 can be fixed by means of adhesive, snap-fit ​​or bolts, which has high connection strength.

[0206] In one embodiment, see Figure 12 As shown, a connecting plate 240 includes a through hole 241 for passing through the connecting plate 240 along the arrangement direction of the electrical connector 222 and the encapsulation housing 221, and for accommodating the electrical connector 222.

[0207] In the embodiments of this application, see Figure 12 As shown, one side of the power module along the positive X direction is the AC power terminal side. The AC power terminal side of the power module 220 includes two electrical connectors 222, both of which are copper busbar connectors 222a, including a positive copper busbar connector and a negative copper busbar connector. Taking the AC power terminal side of the power module as an example, a through hole 241 is provided on a connecting plate along the X direction, and the through hole 241 penetrates a connecting plate 240 along the X direction. A through hole 241 is strip-shaped and is used to accommodate a copper busbar connector 222a. The copper busbar connector 222a passes through the through hole 241. The length of the through hole 241 in the Y direction is equal to the length of the copper busbar connector 222a, and the length of the through hole 241 in the Z direction is equal to the length of the copper busbar connector 222a. Along the Y direction, the two sides of the copper busbar connector 222a are abutted against the two sides of the inner wall of the through hole 241, and along the Z direction, the two sides of the copper busbar connector 222a are abutted against the two sides of the inner wall of the through hole 241 to increase the connection stability between the copper busbar connector 222a and the through hole 241 and prevent the copper busbar connector 222a from sliding. In one embodiment, the length of the through hole 241 in the Y direction is greater than the length of the copper busbar connector 222a, and the length of the through hole 241 in the Z direction is greater than the length of the copper busbar connector 222a. The through hole 241 is used to accommodate one copper busbar connector 222a.

[0208] In one embodiment, see further. Figure 12As shown, the vehicle power supply device 200 includes at least three electrical connectors 222. The number of electrical connectors 222 may include three, four, etc. At least three electrical connectors 222 are located on the same side of the encapsulation housing 221 along one of the directions perpendicular to the thickness of the liquid cooler 210.

[0209] In the embodiments of this application, please continue to refer to Figure 12 As shown, one side of the power module 220 along the X-direction is the DC power terminal side, which is used to convert DC power into DC power output. The DC power terminal side of the power module 220 includes three electrical connectors 222, one of which is a copper busbar connector 222a, and the other two electrical connectors 222 are multiple pins 222b. Along the Y direction, one copper busbar connector 222a is located between the multiple pins 222b.

[0210] In one embodiment, see Figure 13 As shown, the vehicle power supply device 200 includes another connecting plate 250. A connecting plate 240 is used to fix the other connecting plate 250. Along the thickness direction of the liquid cooler 210, the other connecting plate 250 is located on the same side of the electrical connector 222 as the liquid cooler 210. The other connecting plate 250 includes another through hole 251, which is used to penetrate the other connecting plate 250 along the thickness direction of the liquid cooler 210.

[0211] In the embodiments of this application, see Figure 13 As shown, one side of the power module along the positive X direction is the AC power terminal side. The AC power terminal side of the power module 220 includes two electrical connectors 222, both of which are copper busbar connectors 222a, including a positive copper busbar connector and a negative copper busbar connector. Taking the AC power terminal side of the power module as an example, the vehicle power supply device 200 includes another connecting plate 250. Along the Z direction, the other connecting plate 250 and the liquid cooling radiator 210 are located on the same side of the electrical connector 222. A connecting plate 240 is fixedly connected, and the connecting plate 240 and the other connecting plate 250 are perpendicular to each other. Along the Z direction, the other connecting plate 250 and the electrical connector 222 are stacked in sequence to separate the electrical connector 222 from other electrical components to prevent interference from other electrical components to the electrical connector 222.

[0212] In the embodiments of this application, see Figure 13As shown, another through hole 251 is provided on another connecting plate 250 along the Z direction. The other through hole 251 penetrates the other connecting plate 250 along the Z direction. The other through hole 251 is circular in shape, but can also be other shapes. The other through hole 251 is used to penetrate the other connecting plate 250 along the Z direction. A copper busbar connector 222a includes a copper busbar through hole 2221. The copper busbar through hole 2221 is circular in shape, but can also be other shapes. The copper busbar through hole 2221 is used to penetrate the copper busbar connector 222a along the Z direction. The copper busbar through hole 2221 and the other through hole 251 are arranged opposite to each other along the Z direction. Along the X direction, the inner diameter of the copper busbar through hole 2221 is smaller than the inner diameter of the other through hole 251. Both the copper busbar through hole 2221 and the other through hole 251 are used to connect other electrical components.

[0213] In one embodiment, a copper busbar through hole 2221 and another through hole 251 are arranged opposite to each other along the Z direction, and the inner diameter of the copper busbar through hole 2221 is equal to the inner diameter of the other through hole 251 along the X direction. Both the copper busbar through hole 2221 and the other through hole 251 are used to connect other electrical components.

[0214] In one embodiment, see Figure 13 As shown, along the arrangement direction of at least two electrical connectors 222, the length of another connecting plate 250 is greater than or equal to the length of at least one electrical connector 222.

[0215] In the embodiments of this application, see Figure 13 As shown, one side of the power module along the positive X direction is the AC power terminal side. The AC power terminal side of the power module 220 includes two electrical connectors 222, both of which are copper busbar connectors 222a, including a positive copper busbar connector and a negative copper busbar connector. Taking the AC power terminal side of the power module as an example, another connecting plate 250 and a copper busbar connector 222a are arranged opposite each other along the Z direction. The length of the other connecting plate 250 along the Y direction is greater than the length of the copper busbar connector 222a corresponding to the other connecting plate 250, so that the other connecting plate 250 can fully support the copper busbar connector 222a. In one embodiment, another connecting plate 250 and a copper busbar connector 222a are arranged opposite each other along the Z direction, and the length of the other connecting plate 250 along the Y direction is equal to the length of the copper busbar connector 222a corresponding to the other connecting plate 250.

[0216] In the embodiments of this application, see further reference. Figure 13 As shown, one side of the other connecting plate 250 along the Y direction is not protruding from one side of the same side of the encapsulation housing 221 to prevent interference with the installation of other electrical components.

[0217] In one embodiment, see Figure 13 As shown, the number of the other connecting plates 250 is at least two, and the number of the other connecting plates 250 may include two, three, or four, etc. At least two other connecting plates 250 are arranged sequentially along the Y direction along the arrangement direction of at least two electrical connectors 222.

[0218] In the embodiments of this application, see Figure 13 As shown, one side of the power module along the positive X direction is the AC power terminal side. The AC power terminal side of the power module 220 includes two electrical connectors 222, both of which are copper busbar connectors 222a, including a positive copper busbar connector and a negative copper busbar connector. Taking the AC power terminal side of the power module as an example, and taking the number of the other connecting plates 250 as two, there are two other connecting plates 250, and the two other connecting plates 250 are arranged sequentially along the Y direction. The bottom walls of the two other connecting plates 250 along the Y direction are located on the same horizontal plane.

[0219] In one embodiment, the sum of the lengths of the two additional connecting plates 250 along the Y direction is greater than the sum of the lengths of two adjacent copper busbar connectors 222a and the length of the gap between two adjacent copper busbar connectors 222a, to protect each copper busbar connector 222a. The sum of the lengths of the two additional connecting plates 250 along the Y direction is less than the length of the encapsulation housing 221, and the length of the additional connecting plates 250 does not protrude beyond the length of the encapsulation housing 221 to prevent interference with the installation of other electrical components. In another embodiment, the sum of the lengths of the two additional connecting plates 250 along the Y direction is equal to the sum of the lengths of two adjacent copper busbar connectors 222a and the length of the gap between two adjacent copper busbar connectors 222a. In yet another embodiment, the sum of the lengths of the two additional connecting plates 250 along the Y direction is equal to the length of the encapsulation housing 221.

[0220] In one embodiment, there are two additional through holes. Two additional through holes 251 of the same shape and size are respectively provided on two additional connecting plates 250 along the Y direction. The two additional through holes 251 are distributed on both sides of the vertical insulating plate 230. Each additional through hole 251 is used to be arranged opposite to each copper busbar through hole 2221, and each additional through hole 251 is used to connect other electrical components.

[0221] Figure 18 Another schematic diagram of the vehicle-mounted power supply device provided in the embodiments of this application.

[0222] In one embodiment, see Figure 18As shown, the number of power modules 220 is at least two, including two, three, or four, etc. Each power module 220 is arranged sequentially along the Y direction, and adjacent power modules 220 are fixed by bolts or other means to ensure the stability of the power modules 220.

[0223] In one embodiment, see Figure 18 As shown, there are two liquid cooling radiators 210. One liquid cooling radiator 210 is located on the side of the power module 220 in the positive Z direction, and the other liquid cooling radiator 210 is located on the side of the power module 220 in the negative Z direction. The two liquid cooling radiators 210 are sandwiched between the power module 220. Both liquid cooling radiators 210 are provided with water channels, and the water channels in the two liquid cooling radiators 210 are connected. Both are used to dissipate heat from the power module 220, improve the cooling effect, and make the heat dissipation efficiency better.

[0224] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. An on-board power supply device for electric vehicles, characterized in that, The on-board power supply device is used to supply power to the load of the electric vehicle. The on-board power supply device includes a liquid-cooled radiator and a power module. The liquid-cooled radiator and the power module are stacked along the thickness direction of the liquid-cooled radiator. The power module includes a housing and a plurality of electrical connectors protruding from the surface of the housing. At least two of the plurality of electrical connectors are arranged on the same side of the housing along one of the directions perpendicular to the thickness of the liquid-cooled radiator. The vehicle-mounted power supply device includes a vertical insulating plate extending along the thickness direction of the liquid-cooled heat sink, the vertical insulating plate being located between two electrical connectors on the same side of the encapsulation housing.

2. The vehicle-mounted power supply device according to claim 1, characterized in that, The power module also includes a horizontal insulating plate that extends along the thickness direction of the vertical insulating plate, protrudes from one surface of the package housing and is connected to the vertical insulating plate.

3. The vehicle-mounted power supply device according to claim 2, characterized in that, Along the arrangement direction of the at least two electrical connectors, the sum of the lengths of two adjacent electrical connectors and the length of the gap between two adjacent electrical connectors is less than or equal to the length of the transverse insulating plate, and the length of the transverse insulating plate is less than the length of the encapsulation housing.

4. The vehicle-mounted power supply device according to claim 2 or 3, characterized in that, The power module also includes another horizontal insulating plate, which extends along the thickness direction of the vertical insulating plate. Along the thickness direction of the liquid cooler, the other horizontal insulating plate is located on both sides of the package housing with the first horizontal insulating plate, protrudes from another surface of the package housing, and is connected to the vertical insulating plate.

5. The vehicle-mounted power supply device according to claim 4, characterized in that, The power module includes a connecting plate, the vertical insulating plate is used to fix the connecting plate, and the connecting plate is used to connect the horizontal insulating plate and the other horizontal insulating plate along the thickness direction of the liquid cooler.

6. The vehicle-mounted power supply device according to claim 5, characterized in that, The connecting plate includes a through hole for penetrating the connecting plate along the arrangement direction of the electrical connector and the encapsulation housing, and for accommodating the electrical connector.

7. The vehicle-mounted power supply device according to claim 1, characterized in that, The power module includes another connecting plate, and the vertical insulating plate is used to fix the other connecting plate. The other connecting plate is located on the same side of the electrical connector along the thickness direction of the liquid cooler and the liquid cooler. The other connecting plate includes another through hole, which is used to penetrate the other connecting plate along the thickness direction of the liquid cooler.

8. The vehicle-mounted power supply device according to claim 7, characterized in that, The length of the other connecting plate along the arrangement direction of the at least two electrical connectors is greater than or equal to the length of at least one of the electrical connectors, and the length of the other connecting plate on one side of the vertical insulating plate is less than or equal to the length of the encapsulation housing on the same side of the vertical insulating plate.

9. The vehicle-mounted power supply device according to claim 7 or 8, characterized in that, The number of the other connecting plates is at least two, and at least two of the connecting plates are located on both sides of the vertical insulating plate along the arrangement direction of the at least two electrical connectors.

10. The vehicle-mounted power supply device according to claim 7 or 8, characterized in that, The vehicle power supply device includes a fixing plate, and the fixing plate, the liquid cooling radiator and the power module are arranged in sequence along the thickness direction of the liquid cooling radiator. The fixing plate includes a third through hole, and the outer wall surface of the other connecting plate facing the fixing plate includes a protrusion. The protrusion along the thickness direction of the liquid cooling radiator is used to pass through the third through hole.

11. The vehicle-mounted power supply device according to any one of claims 1, 2, 3, 5, 6, 7, and 8, characterized in that, At least three of the plurality of electrical connectors are arranged on the same side of the encapsulation housing, and at least one vertical insulating plate is included between any two adjacent electrical connectors along the arrangement direction of the at least three electrical connectors.

12. The vehicle-mounted power supply device according to any one of claims 1, 2, 3, 5, 6, 7, and 8, characterized in that, One side of the encapsulation housing includes a groove for accommodating one side of the vertical insulating plate. The length of the groove along the arrangement direction of the at least two electrical connectors is equal to the length of the vertical insulating plate. The one side of the vertical insulating plate along the arrangement direction of the electrical connectors and the encapsulation housing is used to fit against the bottom wall of the groove.

13. The vehicle-mounted power supply device according to any one of claims 1, 2, 3, 5, 6, 7, and 8, characterized in that, The vehicle-mounted power supply device includes a water-absorbing layer, and the liquid-cooled radiator is used to fix the water-absorbing layer. The water-absorbing layer, the liquid-cooled radiator, and the power module are arranged in sequence along the thickness direction of the liquid-cooled radiator.

14. A powertrain, characterized in that, The powertrain includes an electric motor and an on-board power supply device as described in any one of claims 1-13, the on-board power supply device being used to connect the electric motor.

15. An electric vehicle, characterized in that, The electric vehicle includes a plurality of wheels and the powertrain of claim 14, the powertrain being used to drive one or more of the wheels.

Images