Vehicle-mounted device and electric vehicle

Abstract

The embodiment of the invention provides a vehicle-mounted device and an electric vehicle, the vehicle-mounted device comprises at least one of a vehicle-mounted charger or a motor controller, a shell of the vehicle-mounted device comprises an integrated shell and an electrical cover plate, the integrated shell comprises an electrical containing groove, and the electrical cover plate is used for enclosing the electrical containing groove. Wherein the electrical containing groove is used for containing the integrated support and the first circuit board, the groove bottom of the electrical containing groove is used for fixing the integrated support, the first circuit board is used for bearing at least one electrical assembly in the vehicle-mounted charger or the motor controller, and the integrated support is used for fixing and cooling the at least one electrical assembly in the vehicle-mounted charger or the motor controller. The integrated supports are arranged between the first circuit board and the bottom of the electrical containing groove.

Description

Technical Field

[0001] The present application relates to the technical field of electric vehicles, and in particular to a vehicle-mounted device and an electric vehicle. Background Art

[0002] Existing electric vehicles usually use a powertrain as a power source. At present, the powertrain includes multiple components such as a motor, a reducer and a power supply device. In order to realize the diversification of the powertrain functions, more and more functional modules will be integrated into the power supply device, but the diversified functional modules will make the size of the power supply device large, the internal wiring of the power supply device complicated, the installation is difficult, and the integration is not high. The current layout of the all-in-one power supply device mainly uses multiple circuit boards. The layout of the electrical components of each functional module occupies a large space volume, which is not conducive to the miniaturization of the power supply device. Fixing the electrical components of each functional module in the shell of the all-in-one power supply device requires forming multiple fixing holes and multiple fixing structural parts in the shell, which makes the shell structure of the all-in-one power supply device complex and the installation is complex. Summary of the invention

[0003] The present application provides a vehicle-mounted device and an electric vehicle. An integrated bracket is used to fix the motor controller of the vehicle-mounted device and the electrical components of the vehicle-mounted charger together to form an integrated module, which simplifies the assembly process, improves the integration and integration of the vehicle-mounted device, and miniaturizes the vehicle-mounted device.

[0004] In a first aspect, the present application provides a vehicle-mounted device, the vehicle-mounted device includes at least one of a vehicle-mounted charger or a motor controller, the housing of the vehicle-mounted device includes an integrated housing and an electrical cover, the integrated housing includes an electrical receiving slot, and the electrical cover is used to enclose the electrical receiving slot. The electrical receiving slot is used to accommodate an integrated bracket and a first circuit board, the bottom of the electrical receiving slot is used to fix the integrated bracket, the first circuit board is used to carry at least one electrical component of the vehicle-mounted charger or the motor controller, the integrated bracket is used to fix and cool at least one electrical component of the vehicle-mounted charger or the motor controller, and the integrated bracket is arranged between the first circuit board and the bottom of the electrical receiving slot.

[0005] In the embodiment of the present application, the first circuit board is used to carry at least one electrical component of the on-board charger or motor controller, and the integrated bracket is arranged between the first circuit board and the bottom of the electrical receiving slot, so that the integrated bracket can support at least one electrical component of the on-board charger or motor controller, so that when the on-board device is assembled, at least one electrical component of the on-board charger or motor controller can be installed and fixed in the electrical receiving slot after the integrated bracket is assembled, which facilitates the assembly process and reduces the difficulty of assembly. The bottom of the electrical receiving slot is not a flat installation surface, and the integrated bracket is arranged between the first circuit board and the bottom of the electrical receiving slot. The use of the integrated bracket to install and fix at least one electrical component of the on-board charger or motor controller also makes it unnecessary for the at least one electrical component of the on-board charger or motor controller to be directly fixed on the bottom of the electrical receiving slot, which facilitates the installation and arrangement of the on-board charger or motor controller, helps to make the on-board charger or motor controller more regularly arranged, and can also improve the stability of the electrical connection of the on-board device.

[0006] In the embodiment of the present application, the bottom of the electrical receiving groove is used to fix the integrated bracket, which is used to fix and cool the electrical components of at least one of the on-board charger or the motor controller. The motor controller of the on-board device and the electrical components of the on-board charger are fixed together by an integrated bracket to form an integrated module. During assembly, the motor controller and the on-board charger can be installed on the integrated bracket and then installed in the electrical receiving groove, making the assembly and installation process of the motor controller and the on-board charger simpler. It can also make the components in the on-board device more integrated and more integrated, which is conducive to the miniaturization of the on-board device.

[0007] In one embodiment, the integrated bracket also includes a plurality of first support members, which are distributed on one side of the slot of the integrated bracket facing the receiving slot, and the plurality of first support members are used to fix and support the first circuit board, and the side of the first circuit board facing the receiving slot is used to fix the electrical components of at least one of the vehicle charger or the motor controller.

[0008] In an embodiment of the present application, the integrated bracket is arranged between the first circuit board and the bottom of the electrical receiving slot. The integrated bracket also includes multiple first support members. The first support members are distributed on one side of the slot of the integrated bracket facing the electrical receiving slot, so that the multiple first support members are closer to the first circuit board, making it convenient for the multiple first support members to fix and support the first circuit board, making the structure of the vehicle-mounted device more reliable.

[0009] In an embodiment of the present application, the side of the first circuit board facing the electrical receiving groove is used to fix the electrical components of at least one of the on-board charger or the motor controller, so that the electrical components of at least one of the on-board charger or the motor controller can be arranged between the first circuit board and the integrated bracket, limiting the movement space of at least one of the electrical components of the on-board charger or the motor controller, which is conducive to making the installation and fixation of at least one of the electrical components of the on-board charger or the motor controller more secure, thereby improving the reliability of the on-board device.

[0010] In one embodiment, the electrical receiving slot is also used to accommodate a second circuit board, and the second circuit board is used to carry at least one electrical component of the vehicle charger. The integrated bracket also includes a plurality of second support members, and the plurality of second support members are distributed on one side of the notch of the integrated bracket facing the electrical receiving slot. The plurality of second support members are used to fix and support the second circuit board, and the second circuit board is arranged between the first circuit board and the integrated bracket.

[0011] In an embodiment of the present application, the second circuit board is arranged between the first circuit board and the integrated bracket, and the integrated bracket also includes a plurality of second support members, which are distributed on one side of the slot of the integrated bracket facing the electrical receiving slot, so that the plurality of second support members are closer to the second circuit board, making it convenient for the plurality of second support members to support and fix the second circuit board, thereby making the structure of the vehicle-mounted device more reliable.

[0012] In the embodiment of the present application, the second circuit board is arranged between the first circuit board and the integrated bracket, which can save space compared to arranging the second circuit board and the first circuit board flat. Since the second circuit board is used to carry at least one electrical component of the on-board charger, and the first circuit board also carries the electrical components of the on-board charger, the second circuit board is arranged between the first circuit board and the integrated bracket, which can also make the electrical components of the on-board charger more compact, improve the integration and integration of the on-board device, and facilitate the miniaturization of the on-board device.

[0013] In one embodiment, the second circuit board is used to carry a DC converter of an on-board charger. In one embodiment, the DC converter is used to convert high-voltage DC power into low-voltage DC power to power an on-board low-voltage load or a on-board low-voltage battery.

[0014] In one embodiment, the height of the second support member is smaller than the height of the first support member, so that the second circuit board is stacked between the first circuit board and the integrated bracket, so that the first circuit board, the second circuit board and the electrical components carried by each can be stacked, making the electrical components of the vehicle charger more compact, improving the integration and fusion of the vehicle-mounted device, and facilitating the miniaturization of the vehicle-mounted device.

[0015] In one embodiment, the integrated bracket also includes at least one shielding wall, at least one shielding wall is distributed on one side of the slot of the integrated bracket facing the electrical receiving slot, and at least one shielding wall includes a first shielding wall, and the first shielding wall is used to isolate the electrical components of the on-board charger and the electrical components of the motor controller.

[0016] In the embodiment of the present application, at least one shielding wall is distributed on one side of the notch of the integrated bracket facing the electrical receiving slot, so that at least one shielding wall can fix and support the first circuit board, further improving the reliability of the vehicle-mounted device. The first shielding wall is used to isolate the electrical components of the vehicle-mounted charger and the electrical components of the motor controller, so that the first shielding wall can electrically isolate the electrical components of the vehicle-mounted charger and the electrical components of the motor controller, which is conducive to the electrical components of the vehicle-mounted charger and the electrical components of the motor controller to work relatively independently, ensuring the normal operation of the vehicle-mounted device.

[0017] In one embodiment, the integrated bracket also includes a avoidance hole, which passes through the integrated bracket along the stacking direction of the electrical cover plate and the electrical accommodating groove. The avoidance hole is used to accommodate the bus capacitor of the motor controller. The avoidance hole is located on the side of the first shielding wall away from the electrical components of the vehicle charger.

[0018] In the embodiment of the present application, since the height of the bus capacitor of the motor controller along the stacking direction of the electrical cover and the electrical receiving slot is relatively large, the bus capacitor of the motor controller is accommodated in the avoidance hole of the integrated bracket. This allows the bus capacitor of the motor controller to not occupy additional space of the vehicle-mounted device along the stacking direction of the electrical cover and the electrical receiving slot, which is beneficial for making the volume of the vehicle-mounted device smaller.

[0019] In the embodiment of the present application, the avoidance hole is located on the side of the first shielding wall away from the electrical components of the vehicle-mounted charger, so that the arrangement of the bus capacitor of the motor controller can make full use of the space on the side of the first shielding wall away from the electrical components of the vehicle-mounted charger, and also allows the motor controller and the vehicle-mounted charger to be arranged flat, and thus can share the first circuit board, which is beneficial to simplifying the electrical connection lines between the vehicle-mounted charger and the motor controller, thereby making the vehicle-mounted charger and the motor controller more integrated, reducing the space volume occupied by the vehicle-mounted charger and the motor controller, and facilitating the miniaturization of the vehicle-mounted device.

[0020] In one embodiment, the three-phase output copper busbar of the motor controller passes through a portion of the avoidance holes between the bus capacitor of the motor controller and the first shielding wall.

[0021] In an embodiment of the present application, the three-phase output copper busbar is used to supply power to the stator winding of the drive motor. The three-phase output copper busbar transmits the alternating current converted by the power module of the motor controller to the stator winding of the drive motor, thereby causing the drive motor to move.

[0022] In an embodiment of the present application, the three-phase output copper busbar passes through a partial avoidance hole between the bus capacitor of the motor controller and the first shielding wall, making the arrangement of the electrical components of the motor controller and the on-board charger more compact, making more effective use of the space of the integrated bracket, and facilitating the miniaturization of the on-board device. It also makes the distance between the three-phase output copper busbar and the stator winding of the drive motor closer, which can shorten the length of the three-phase output copper busbar. Compared to extending the three-phase output copper busbar from the side of the on-board device, the position of the on-board device used to connect the stator winding of the drive motor in this solution is located in the middle of the on-board device, which can simplify the side structure of the on-board device.

[0023] In one embodiment, at least one shielding wall further includes a second shielding wall, which is arranged on a side of the first shielding wall facing away from the electrical components of the motor controller, and the space between the second shielding wall and the first shielding wall is used to accommodate the electrical components of the vehicle charger.

[0024] In the embodiment of the present application, the second shielding wall can provide support for the first circuit board, thereby improving the reliability of the vehicle-mounted device. The space between the second shielding wall and the first shielding wall is used to accommodate the electrical components of the vehicle-mounted charger. The first shielding wall and the second shielding wall can shield the electrical signals of the electrical components of the vehicle-mounted charger from the electrical signals of other electrical components in the vehicle-mounted device, which is conducive to ensuring the normal operation of the electrical components of the vehicle-mounted charger.

[0025] In one embodiment, at least one shielding wall also includes a third shielding wall. Along the arrangement direction of the first shielding wall and the second shielding wall, the second shielding wall, the third shielding wall and the first shielding wall are arranged in sequence. The space between the second shielding wall and the third shielding wall is used to accommodate the AC filter component. The second shielding wall and the third shielding wall form a first opening at one end of the slot wall close to the electrical receiving slot. The first opening is used to accommodate the first interface. The on-board charger is used to receive AC power provided by an external power source through the first interface. The electrical receiving slot includes a first mounting hole, the first mounting hole is aligned with the first opening, the first mounting hole is used to install a first connector, and the first connector is used to electrically connect the first interface and the external power source.

[0026] In the embodiment of the present application, the third shielding wall can provide support for the first circuit board, thereby improving the reliability of the vehicle-mounted device. Along the arrangement direction of the first shielding wall and the second shielding wall, the second shielding wall, the third shielding wall and the first shielding wall are arranged in sequence, and the space between the second shielding wall and the third shielding wall is used to accommodate the AC filter component, so that the AC filter component can be electrically isolated from other electrical components of the vehicle-mounted charger along the arrangement direction of the first shielding wall and the second shielding wall, and the operation of the AC filter component is guaranteed not to be electrically interfered with by other electrical components. The second shielding wall and the third shielding wall form a first opening at one end of the groove wall close to the electrical accommodation groove, and the first opening is used to accommodate the first interface. The vehicle-mounted charger is used to receive the AC power provided by the external power supply through the first interface, so that the first interface can be electrically isolated from other electrical components of the vehicle-mounted charger along the arrangement direction of the first shielding wall and the second shielding wall, and the operation of the first interface is guaranteed not to be electrically interfered with by other electrical components. It also allows the AC power transmitted from the first interface to the vehicle-mounted charger to be first filtered by the AC filter component for harmonics before being transmitted to other electrical components of the vehicle-mounted charger.

[0027] In an embodiment of the present application, the electrical accommodating slot includes a first mounting hole, which is aligned with the first opening, so as to facilitate the plug-in connection between the first connector passing through the first mounting hole of the electrical accommodating slot and the first interface accommodated by the first opening, and the first connector is used to electrically connect the first interface and the external power supply, so that the input alternating current of the external power supply can be transmitted from the first connector and the first interface to the electrical components of the vehicle-mounted charger in sequence, which is conducive to making the layout of the components of the vehicle-mounted device more compact and reasonable, and is conducive to the miniaturization of the vehicle-mounted device.

[0028] In one embodiment, at least one shielding wall also includes a fourth shielding wall, and along the arrangement direction of the first shielding wall and the second shielding wall, the third shielding wall, the fourth shielding wall and the first shielding wall are arranged in sequence, and the third shielding wall and the fourth shielding wall form a second opening at one end of the slot wall close to the electrical receiving slot, and the second opening is used to accommodate the second interface, and the on-board charger is used to supply power to the compressor through the second interface, and the second opening is on the same side as the first opening. The electrical receiving slot also includes a second mounting hole, and the second mounting hole is aligned with the second opening, and the second mounting hole is used to install a second connector, and the second connector is used to electrically connect the second interface and the compressor, and the second mounting hole is on the same side as the first mounting hole.

[0029] In the embodiment of the present application, the fourth shielding wall can provide support for the first circuit board, thereby improving the reliability of the vehicle-mounted device. Along the arrangement direction of the first shielding wall and the second shielding wall, the third shielding wall, the fourth shielding wall and the first shielding wall are arranged in sequence, and the third shielding wall and the fourth shielding wall form a second opening at one end of the groove wall close to the electrical receiving groove, and the second opening is used to accommodate the second interface, so that along the arrangement direction of the first shielding wall and the second shielding wall, the second interface can be electrically isolated from the AC filter component, the first interface and other electrical components of the vehicle-mounted charger, so that the operation of the second interface is not subject to electrical interference from other electrical components.

[0030] In an embodiment of the present application, the on-board charger is used to supply power to the compressor through the second interface, and the second opening and the first opening are on the same side, so that the first interface and the second interface of the on-board charger are arranged more regularly.

[0031] In an embodiment of the present application, the electrical accommodating slot also includes a second mounting hole, which is aligned with the second opening, so as to facilitate the plug-in connection between the second connector passing through the second mounting hole of the electrical accommodating slot and the second interface accommodated by the second opening, and the second connector is used to electrically connect the second interface and the compressor, so as to facilitate the on-board charger to provide current to the compressor and drive the compressor to work.

[0032] In the embodiment of the present application, the second mounting hole is on the same side as the first mounting hole, so that the opening of the electrical receiving slot is more regular, and the current flowing into the on-board charger from the first interface passing through the first mounting hole is transmitted to the compressor more quickly through the second interface passing through the second mounting hole.

[0033] In one embodiment, the integrated bracket further includes a low-voltage installation groove, the notch of the low-voltage installation groove faces the electrical cover plate, the low-voltage installation groove is used to accommodate the third interface, the on-board charger is used to supply power to the on-board load through the third interface, and the low-voltage installation groove is opposite to the first opening along the opening direction of the first installation hole. The electrical accommodation slot further includes a third installation hole, the third installation hole is aligned with the low-voltage installation groove, the third installation hole is used to install a third connector, and the third connector is used to electrically connect the third interface and the on-board load.

[0034] In the embodiment of the present application, the low-voltage installation groove is used to accommodate the third interface, and the low-voltage installation groove can serve as a shielding chamber for the third interface, so that the third interface can be electrically isolated from other electrical components of the on-board charger, reducing the electrical interference of other electrical components to the third interface. The notch of the low-voltage installation groove faces the electrical cover plate, which is convenient for installing and placing the third interface from above the low-voltage installation groove. The third interface is used to connect the DC converter of the on-board charger carried by the second circuit board.

[0035] In the embodiment of the present application, the low-voltage mounting groove is opposite to the first opening along the opening direction of the first mounting hole, so that the low-voltage mounting groove and the first opening on the integrated bracket are arranged more regularly. The opening direction of the first mounting hole is the same as the axial direction of the drive motor.

[0036] In the embodiment of the present application, the electrical receiving slot also includes a third mounting hole, which is aligned with the low-voltage mounting groove, so that the third connector passing through the third mounting hole of the electrical receiving slot can be connected to the third interface accommodated in the low-voltage mounting groove, and the third connector is used to electrically connect the third interface and the vehicle load, so that the vehicle charger can provide current to the vehicle load through the third interface and the third connector. In the embodiment of the present application, the vehicle load is a 12V low-voltage load.

[0037] In one embodiment, the low-voltage installation groove includes two notches, one notch faces away from the electrical receiving slot along the stacking direction of the electrical cover plate and the electrical receiving slot, and the other notch faces away from the first opening along the opening direction of the first installation hole.

[0038] In an embodiment of the present application, a slot along the stacking direction of the electrical cover plate and the electrical receiving slot faces away from the electrical receiving slot, so that the third interface can be installed and placed from above one slot, simplifying the assembly process of the vehicle-mounted device, and another slot along the opening direction of the first mounting hole faces away from the first opening, which facilitates the installation of the third interface and the third connecting member for connecting to the external vehicle-mounted load at the position of another slot, which is conducive to simplifying the connection cable between the third interface and the external load.

[0039] In one embodiment, the integrated bracket further includes a transformer slot, a PFC inductor slot and a PFC capacitor slot. The first shielding wall, the transformer slot, the PFC inductor slot and the second shielding wall are arranged in sequence along the arrangement direction of the first shielding wall and the second shielding wall, and the third shielding wall, the PFC inductor slot and the PFC capacitor slot are arranged in sequence along the opening direction of the first mounting hole.

[0040] In the embodiment of the present application, the transformer slot is used to accommodate the transformer of the vehicle-mounted device, the PFC inductor slot is used to accommodate multiple inductors of the vehicle-mounted charger, and the PFC capacitor slot is used to accommodate multiple capacitors of the vehicle-mounted charger. The arrangement of the transformer slot, the PFC inductor slot, and the PFC capacitor slot can improve the structural firmness of the vehicle-mounted charger, which is conducive to improving the stability of the vehicle-mounted charger and reducing the electrical influence between the various electrical components of the vehicle-mounted charger.

[0041] In one embodiment, the integrated shell includes an internal water inlet channel, the inlet of the internal water inlet channel is distributed outside the electrical receiving slot, and the outlet of the internal water inlet channel is distributed inside the electrical receiving slot. The integrated bracket includes a bracket water channel inlet and at least one radiator water channel interface. The bracket water channel inlet is used to receive cooling water output from the outlet of the internal water inlet channel, and each radiator water channel interface is used to transport coolant to at least one of the water-cooled radiator of the vehicle charger or the water-cooled radiator of the motor controller.

[0042] In an embodiment of the present application, the inlet of the internal water inlet channel is distributed outside the electrical receiving slot, which is convenient for connecting the inlet of the internal water inlet channel with the external cooling water pipe. The outlet of the internal water inlet channel is distributed inside the electrical receiving slot, so that the cooling water in the vehicle cooling system can flow into the internal water inlet channel of the integrated shell through the outlet of the internal water inlet channel, and enter the interior of the electrical receiving slot of the integrated shell through the outlet of the internal water inlet channel to cool down the electrical components in the electrical receiving slot.

[0043] In an embodiment of the present application, the integrated bracket includes a bracket water channel inlet and at least one radiator water channel interface, and the bracket water channel inlet is used to receive cooling water output from the outlet of the internal water inlet channel, so that the cooling water flowing into the electrical receiving groove from the internal water inlet channel of the integrated housing can flow from the bracket water channel inlet into the internal flow channel of the integrated bracket to dissipate heat for at least one electrical component of the on-board charger or the motor controller fixed to the integrated bracket. Each radiator water channel interface is used to deliver cooling water to at least one of the water-cooled radiator of the on-board charger or the water-cooled radiator of the motor controller, so that the water-cooled radiator of the on-board charger and the water-cooled radiator of the motor controller can be connected to the internal water inlet of the integrated housing through the integrated bracket, so that the coolant from the vehicle cooling system can be delivered to the water-cooled radiator of the on-board charger and the water-cooled radiator of the motor controller, thereby cooling the on-board charger and the motor controller to ensure the normal operation of the on-board device.

[0044] In an embodiment of the present application, the water-cooled radiator of the on-board charger and the water-cooled radiator of the motor controller installed in the electrical receiving slot are connected to the internal water inlet channel of the integrated shell by utilizing the internal flow channel of an integrated bracket, so that the cooling system layout in the on-board device is more compact and the structural integration of the water channel is higher. The integrated bracket can also be used to carry at least one electrical component of the on-board charger or the motor controller, so that the electrical components in the integrated shell are highly integrated with the water cooling system, and the components of the on-board device can be made more compact, which is beneficial to making the on-board device have a smaller volume while improving the cooling efficiency of the on-board device.

[0045] In one embodiment, the outlet of the internal water inlet channel is distributed at the bottom of the electrical receiving slot, and the inlet of the internal water channel of the bracket is used to connect with the outlet of the internal water inlet channel. The outlet of the internal water inlet channel is oriented in the same direction as the slot opening of the electrical receiving slot, and the inlet of the internal water channel of the bracket is oriented in the opposite direction to the slot opening of the electrical receiving slot.

[0046] In an embodiment of the present application, the outlet of the internal water inlet channel is distributed at the bottom of the electrical accommodation groove, and the bracket water channel inlet is used to connect with the outlet of the internal water inlet channel, so that the cooling water flowing into the internal water inlet channel of the integrated shell can enter the integrated bracket from the bracket water channel inlet, thereby cooling the electrical components of the vehicle charger and the electrical components of the motor controller.

[0047] In the embodiment of the present application, the outlet of the internal water inlet channel is oriented in the same direction as the notch of the electrical receiving slot, and the inlet of the bracket water channel is oriented in the opposite direction to the notch of the electrical receiving slot, so that the outlet of the internal water inlet channel is oriented opposite to the inlet of the bracket water channel, which facilitates the inlet of the bracket water channel to receive the cooling water output from the outlet of the internal water inlet channel more smoothly, speeds up the delivery speed of the cooling water into the internal flow channel of the integrated bracket, and enables each radiator water channel interface of the integrated bracket to deliver cooling water to the water-cooled radiator of the on-board charger or the water-cooled radiator of the motor controller more quickly, which is beneficial to improving the cooling efficiency of the on-board device. It is also possible to make the internal water inlet channel and the internal flow channel of the integrated bracket arranged more compactly, which is beneficial to the miniaturization of the on-board device.

[0048] In one embodiment, at least one radiator water channel interface includes a first radiator water channel interface, and the first radiator water channel interface is used to connect to the water cooling radiator of the on-board charger. The first radiator water channel interface is distributed on the side of the integrated bracket facing the electrical cover plate, the bracket water channel inlet is distributed on the side of the integrated bracket away from the cover plate, and the direction of the first radiator water channel interface is opposite to the direction of the bracket water channel inlet.

[0049] In the embodiment of the present application, the water-cooled radiator of the on-board charger is arranged close to the electrical cover plate, and the first radiator water channel interface is distributed on the side of the integrated bracket facing the electrical cover plate, which facilitates the connection between the first radiator water channel interface and the water-cooled radiator of the on-board charger, thereby delivering the cooling water in the internal water inlet channel to the water-cooled radiator of the on-board charger, thereby cooling the electrical components of the on-board charger. In one embodiment, multiple power switch tubes in the on-board charger are carried on the side of the first circuit board facing the electrical cover plate, and the water-cooled radiator of the on-board charger is used to cool the multiple power switch tubes in the on-board charger.

[0050] In the embodiment of the present application, the bracket water channel inlet is distributed on the side of the integrated bracket away from the electrical cover plate, so as to facilitate the connection between the bracket water channel inlet and the outlet of the internal water inlet channel.

[0051] In the embodiment of the present application, the direction of the first radiator water channel interface is opposite to the direction of the bracket water channel inlet, so that the cooling water from the vehicle cooling system can smoothly flow through the inlet of the internal water inlet channel, the outlet of the internal water inlet channel, the bracket water channel inlet, and the first radiator water channel interface in sequence into the water-cooled radiator of the on-board charger, thereby cooling the electrical components of the on-board charger.

[0052] In one embodiment, the at least one radiator water channel interface further includes a second radiator water channel interface, and the second radiator water channel interface is used to connect to the water cooling radiator of the motor controller. The second radiator water channel interface is used to receive coolant from at least one of the water cooling radiator of the vehicle charger or the bracket water channel inlet through the internal flow channel of the integrated bracket.

[0053] In an embodiment of the present application, the second radiator water channel interface is used to connect to the water-cooled radiator of the motor controller, and the second radiator water channel interface is used to receive cooling water from at least one of the water-cooled radiator of the on-board charger or the bracket water channel inlet through the internal flow channel of the integrated bracket. When the second radiator water channel interface is used to receive cooling water from the water-cooled radiator of the on-board charger through the internal flow channel of the integrated bracket, the cooling water in the water-cooled radiator of the motor controller can be connected in series with the cooling water in the water-cooled radiator of the on-board charger. When the second radiator water channel interface is used to receive cooling water from the bracket water channel inlet through the internal flow channel of the integrated bracket, the cooling water in the water-cooled radiator of the motor controller can be connected in parallel with the cooling water in the water-cooled radiator of the on-board charger, which is beneficial to improving the overall cooling efficiency of the vehicle-mounted device.

[0054] In one embodiment, the integrated bracket includes a support arm, which extends from the first shielding wall away from the second shielding wall along the arrangement direction of the first shielding wall and the second shielding wall, the support arm is used to fix the bus capacitor of the motor controller and the water-cooling radiator of the motor controller, the space between the support arm and the first shielding wall is used to accommodate the bus capacitor of the motor controller and the water-cooling radiator of the motor controller, the second radiator water channel interface is located at one end of the support arm away from the first shielding wall, and the second radiator water channel interface is away from the bottom protrusion of the electrical containing slot along the stacking direction of the electrical cover plate and the electrical containing slot.

[0055] In an embodiment of the present application, the support arm extends from the first shielding wall away from the second shielding wall along the arrangement direction of the first shielding wall and the second shielding wall, and the support arm is used to fix the bus capacitor of the motor controller and the water-cooling radiator of the motor controller, so that the bus capacitor of the motor controller and the water-cooling radiator of the motor controller are fixed to the same bracket as the electrical components of the vehicle-mounted charger, thereby improving the structural strength of the vehicle-mounted device.

[0056] In the embodiment of the present application, the space between the support arm and the first shielding wall is used to accommodate the bus capacitor of the motor controller and the water-cooled radiator of the motor controller, so that the space between the support arm and the first shielding wall can be fully utilized, and the bus capacitor of the motor controller will not occupy too much space of the integrated bracket along the arrangement direction of the first shielding wall and the second shielding wall, which is conducive to the miniaturization of the vehicle-mounted device. In the embodiment of the present application, the space between the support arm and the first shielding wall is used to enclose a position avoidance hole.

[0057] In an embodiment of the present application, the second radiator water channel interface is located at an end of the support arm away from the first shielding wall, which facilitates the connection between the internal flow channel of the integrated bracket and the water-cooled radiator of the motor controller. The second radiator water channel interface is protruded away from the bottom of the electrical containing groove along the stacking direction of the electrical cover plate and the electrical containing groove, so that the second radiator water channel interface can not only achieve connection with the water-cooled radiator of the motor controller, but also provide support for the water-cooled radiator of the motor controller, and also facilitate the installation and fixing of the water-cooled radiator of the motor controller to the integrated bracket.

[0058] In one embodiment, the vehicle-mounted device further includes a driving motor and a reducer, the housing of the vehicle-mounted device further includes a motor end cover and a reducer end cover, the integrated housing further includes a motor receiving slot and a reducer receiving slot, the motor receiving slot is used to fix and receive the stator of the driving motor, the motor end cover is used to enclose the motor receiving slot, the reducer receiving slot is used to receive the gear set of the reducer, and the reducer end cover is used to enclose the reducer receiving slot. The motor receiving slot and the reducer receiving slot are arranged adjacent to each other along the axial direction of the driving motor, the notch direction of the motor receiving slot is opposite to the notch direction of the reducer receiving slot, and the notch direction of the electrical receiving slot is perpendicular to the notch direction of the motor receiving slot and the notch direction of the reducer receiving slot. The groove walls of the electrical receiving groove include a first groove wall, a second groove wall, a third groove wall and a fourth groove wall. The first groove wall and the second groove wall are arranged relative to each other along the axial direction of the drive motor, and the third groove wall and the fourth groove wall are arranged relative to each other in a direction perpendicular to the axial direction of the drive motor. The distance between the first groove wall and the groove opening of the motor receiving groove is greater than the distance between the second groove wall and the groove opening of the motor receiving groove. The distance between the third groove wall and the motor shaft of the drive motor is smaller than the distance between the fourth groove wall and the motor shaft of the drive motor. The entrance of the internal water inlet channel is distributed on the third groove wall, the power battery interface of the vehicle-mounted device and the load power supply interface of the vehicle-mounted device are distributed on the first groove wall, the three-phase copper discharge line holes of the vehicle-mounted device are distributed on the second groove wall, and the outlet of the internal water outlet channel is distributed on the outside of the fourth groove wall.

[0059] In the embodiment of the present application, the third groove wall and the fourth groove wall are arranged relative to each other along the axis perpendicular to the drive motor, the inlet of the internal water inlet channel is distributed on the third groove wall, and the outlet of the internal water outlet channel is distributed on the outside of the fourth groove wall. The cooling water entering the internal flow channel of the integrated bracket, the water-cooling radiator of the vehicle-mounted charger, and the water-cooling radiator of the motor controller from the inlet of the internal water inlet channel and finally flowing out from the outlet of the internal water outlet channel has a longer flow path, which is beneficial for the internal flow channel of the integrated bracket, the water-cooling radiator of the vehicle-mounted charger, and the water-cooling radiator of the motor controller to dissipate heat for the electrical components of the vehicle-mounted charger and the electrical components of the motor controller, and is beneficial to improving the cooling efficiency of the vehicle-mounted devices.

[0060] In an embodiment of the present application, the electrical components of the on-board charger in the on-board device are stacked on the drive motor, and the inlet of the internal water inlet channel is distributed on the outer side of the third groove wall, so that the cooling water enters the integrated bracket from the inlet of the internal water inlet channel and quickly flows into the water-cooled radiator of the on-board charger and the third internal flow channel at the bottom of the integrated bracket to achieve heat dissipation of the on-board charger, and the third internal flow channel at the bottom of the integrated bracket is also stacked on the drive motor, which can also cool the drive motor, thereby improving the cooling and heat dissipation effect of the on-board device.

[0061] In an embodiment of the present application, the outlet of the internal water outlet channel is arranged on the fourth slot wall close to the reducer, and the electrical components of the motor controller in the vehicle-mounted device are stacked in the gap between the drive motor and the reducer. Since the busbar capacitor height of the motor controller is relatively high, the gap between the drive motor and the reducer can be fully utilized by stacking the electrical components of the motor controller in the gap between the drive motor and the reducer. The outlet of the internal water outlet channel connected to the water-cooled radiator of the motor controller can be connected to the external pipeline from the gap between the drive motor and the reducer, thereby fully utilizing the gap between the drive motor and the reducer, making the structure of the vehicle-mounted device compact and facilitating the miniaturization of the vehicle-mounted device.

[0062] In an embodiment of the present application, the first slot wall and the second slot wall are arranged relative to each other along the axial direction of the drive motor, and the power battery interface of the vehicle-mounted device and the load power supply interface of the vehicle-mounted device are distributed on the first slot wall, wherein the load power supply interface is the second connector, and the load power supply interface is used to connect the compressor. The three-phase copper discharge line holes of the vehicle-mounted device are distributed on the second slot wall, so that the current input from the power battery into the vehicle-mounted charger can be more smoothly output from the three-phase output copper busbar passing through the three-phase copper discharge line holes to the stator winding of the drive motor, thereby driving the drive motor. The fact that the power battery interface of the vehicle-mounted device and the load power supply interface of the vehicle-mounted device are both distributed on the first slot wall makes it convenient for the vehicle-mounted charger to energize the load of the vehicle-mounted device more quickly through the load power supply interface.

[0063] In an embodiment of the present application, the power battery interface of the vehicle-mounted device and the load power supply interface of the vehicle-mounted device are distributed on the first slot wall, the three-phase copper discharge line holes of the vehicle-mounted device are distributed on the second slot wall, the entrance of the internal water inlet channel is distributed on the third slot wall, and the outlet of the internal water outlet channel is distributed on the outside of the fourth slot wall, so that the opening of the electrical accommodation slot is more reasonable and regular.

[0064] In one embodiment, the first mounting hole and the second mounting hole are located in the first slot wall, the first connector installed in the first mounting hole passes through the first slot wall, and the second connector installed in the second mounting hole passes through the first slot wall. The third mounting hole is located in the second slot wall, and the third connector installed in the third mounting hole passes through the second slot wall. The first connector is plugged into the power battery interface, the second connector is plugged into the load power supply interface of the vehicle-mounted device, and the third connector is plugged into the interface of the 12V low-voltage load.

[0065] In one embodiment, the vehicle-mounted device further includes a vehicle controller, and the communication connector mounting hole of the vehicle controller passes through the bottom of the electrical receiving slot, so that the communication connector connected to the vehicle controller does not occupy additional space of the electrical receiving slot along the axial direction of the drive motor and the opening direction of the first mounting hole, which is conducive to the miniaturization of the vehicle-mounted device. The cable of the communication connector can also pass through the bottom of the electrical receiving slot, making the wiring of the vehicle-mounted device more beautiful.

[0066] In a second aspect, the present application provides an electric vehicle, comprising a power battery and a vehicle-mounted device as in the first aspect, wherein the vehicle-mounted device is used to receive power from the power battery to drive at least one of the wheels or loads of the vehicle, or the vehicle-mounted device is used to receive power from an external power source to charge the power battery.

[0067] In the vehicle-mounted device in the embodiment of the present application, an integrated bracket is used to fix the electrical components of the motor controller and the vehicle-mounted charger of the vehicle-mounted device together to form an integrated module. During assembly, the motor controller and the vehicle-mounted charger can be installed in the integrated bracket and then installed in the electrical receiving slot, making the assembly and installation process of the motor controller and the vehicle-mounted charger simpler. It also makes the integration and integration of the components of the vehicle-mounted device higher, which is conducive to the miniaturization of the vehicle-mounted device. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments of the present application will be described below.

[0069] Figure 1 is a schematic diagram of an electric vehicle provided in an embodiment of the present application;

[0070] Figure 2 is a schematic diagram of a vehicle-mounted device provided in an embodiment of the present application;

[0071] Figure 3 is another schematic diagram of the vehicle-mounted device provided in an embodiment of the present application;

[0072] Figure 4 yes Figure 3 An exploded view of the vehicle-mounted device in FIG.

[0073] Figure 5 is a schematic diagram of a vehicle-mounted device provided by another embodiment of the present application;

[0074] Figure 6 yes Figure 5 An exploded view of the vehicle-mounted device;

[0075] Figure 7 is a schematic diagram of an integrated housing provided in an embodiment of the present application;

[0076] Figure 8 is an exploded diagram of the vehicle-mounted device provided in an embodiment of the present application;

[0077] Fig. 9 is another schematic diagram of the vehicle-mounted device provided in an embodiment of the present application;

[0078] Fig.10 is a schematic diagram of an integrated bracket provided in an embodiment of the present application;

[0079] Fig.11 is another exploded diagram of the vehicle-mounted device provided in an embodiment of the present application;

[0080] Fig.12 is another schematic diagram of the vehicle-mounted device provided in an embodiment of the present application;

[0081] Fig.13 is another exploded diagram of the vehicle-mounted device provided in an embodiment of the present application;

[0082] Fig.14 is another schematic diagram of an integrated bracket provided in an embodiment of the present application;

[0083] Fig.15 yes Fig.14 A cross-sectional view of the integrated bracket along AA;

[0084] Fig.16 is another exploded diagram of the vehicle-mounted device provided in an embodiment of the present application;

[0085] Fig.17 is a schematic diagram of an integrated housing provided by another embodiment of the present application;

[0086] Fig.18 This is another schematic diagram of an integrated housing provided in another embodiment of the present application. DETAILED DESCRIPTION

[0087] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0088] For ease of understanding, the English abbreviations and related technical terms involved in the embodiments of the present application are explained and described below.

[0089] PFC: The abbreviation of Power Factor Correction, also known as power factor correction, is mainly to control the waveform of the input current to synchronize it with the input voltage waveform, improve the power factor and reduce the harmonic content.

[0090] The embodiment of the present application provides a vehicle-mounted device including at least one of a vehicle-mounted charger or a motor controller, the housing of the vehicle-mounted device includes an integrated housing and an electrical cover, the integrated housing includes an electrical receiving slot, and the electrical cover is used to enclose the electrical receiving slot. The electrical receiving slot is used to accommodate an integrated bracket and a first circuit board, the bottom of the electrical receiving slot is used to fix the integrated bracket, the first circuit board is used to carry at least one electrical component of the vehicle-mounted charger or the motor controller, the integrated bracket is used to fix and cool at least one electrical component of the vehicle-mounted charger or the motor controller, and the integrated bracket is arranged between the first circuit board and the bottom of the electrical receiving slot.

[0091] An integrated bracket is used to fix the electrical components of the motor controller and the on-board charger of the vehicle device together to form an integrated module. During assembly, the motor controller and the on-board charger can be installed on the integrated bracket and then installed in the electrical receiving slot, making the assembly and installation process of the motor controller and the on-board charger simpler. It also makes the integration and integration of the components of the vehicle device higher, which is conducive to the miniaturization of the vehicle device.

[0092] Figure 1 It is a schematic diagram of the electric vehicle 1 provided in an embodiment of the present application.

[0093] In one embodiment, an electric vehicle 1 includes a power battery 10 and an onboard device 20, such as Figure 1As shown, the vehicle-mounted device 20 is used to receive power from the power battery 10 to drive the wheels 30 of the electric vehicle 1 or to supply power to the load. In the embodiment of the present application, the electric vehicle 1 refers to a wheeled device driven or towed by a power device. In one embodiment, the vehicle-mounted device 20 may be a vehicle-mounted charger or a motor controller. In one embodiment, the vehicle-mounted device 20 may be a power supply device including a vehicle-mounted charger and a motor controller. In one embodiment, the vehicle-mounted device 20 may be an all-in-one power supply device including multiple functional devices such as an on-board charger, a motor controller, a power distribution device, and a vehicle controller. In one embodiment, the vehicle-mounted device 20 includes a power supply device, a drive motor, and a reducer, wherein the vehicle-mounted device 20 may also be referred to as a powertrain or an all-in-one powertrain.

[0094] Figure 2 It is a schematic diagram of the vehicle-mounted device 20 provided in an embodiment of the present application.

[0095] In one embodiment, if Figure 1 and Figure 2 As shown, the vehicle-mounted device 20 includes a power supply device 21, a drive motor 22 and a reducer 23. In the embodiment of the present application, the power supply device 21 supplies power to the drive motor 22, the power supply device 21 receives the high-voltage direct current delivered by the power battery 10, and converts the high-voltage direct current into high-voltage alternating current and delivers it to the drive motor 22, driving the drive motor 22 to rotate. The drive motor 22 is transmission-connected to the reducer 23, and the drive motor 22 drives the reducer 23 to rotate. In the embodiment of the present application, the vehicle-mounted device 20 can also be referred to as a powertrain.

[0096] In the embodiment of the present application, the drive motor 22 includes a motor shaft (not shown), a motor stator (not shown) and a motor rotor (not shown). The reducer 23 includes a gear set (not shown), an input shaft (not shown) and an output shaft (not shown). The motor rotor in the drive motor 22 is fixedly sleeved on the motor shaft, and the motor stator drives the motor 22 rotor to rotate after receiving alternating current, thereby driving the motor shaft to rotate. The motor shaft of the drive motor 22 is transmission-connected to the input shaft of the reducer 23, and the input shaft receives the power transmitted by the motor shaft of the drive motor 22 and transmits the power to the output shaft through the gear assembly, and the output shaft drives the wheels 30 of the electric vehicle 1 to travel.

[0097] Figure 3 is another schematic diagram of the vehicle-mounted device 20 provided in an embodiment of the present application, Figure 4 yes Figure 3 FIG. 2 is an exploded view of the vehicle-mounted device 20.

[0098] In one embodiment, if Figure 3 and Figure 4As shown, the power supply device 21 includes a motor controller 100, an on-board charger 200, and a vehicle controller 300. The full name of the motor controller 100 is Motor Control Unit, abbreviated as MCU. In one embodiment, the motor controller 100 is used to receive direct current from the power battery 10 and convert the direct current into alternating current and transmit it to the stator winding of the drive motor 22 to enable the drive motor 22 to operate.

[0099] The on-board charger 200 is called On-Bord Charger, or OBC in English. In one embodiment, the on-board charger 200 is used to convert AC power from the power grid into DC power or directly transmit DC power to charge the power battery 10 or to supply power to the load of the vehicle.

[0100] The vehicle controller 300 is called Vehicle Control Unit (VCU) in English. In one embodiment, the vehicle controller 300 is responsible for the normal driving of the vehicle, brake energy feedback, energy circuits of the vehicle drive system and the power battery 10, network circuits, fault diagnosis and processing, and vehicle status monitoring.

[0101] In one embodiment, the vehicle-mounted device 20 is used to receive power from an external power source to charge the power battery 10. In the embodiment of the present application, the vehicle-mounted device 20 may also be referred to as a power supply device 21.

[0102] In one embodiment, if Figure 4 As shown, the vehicle-mounted device 20 includes a shell 400 and an integrated bracket 500, the shell 400 includes an electrical receiving groove 411, the groove bottom 4111 of the electrical receiving groove 411 is used to fix and accommodate the integrated bracket 500, and the integrated bracket 500 is used to carry the electrical components of at least one of the vehicle-mounted charger 200 or the motor controller 100.

[0103] In one embodiment, if Figure 4 As shown, the housing 400 of the vehicle-mounted device 20 includes a plurality of mounting holes 401, and the plurality of mounting holes 401 are used to fix a plurality of connectors 402. The plurality of connectors 402 include connectors for connecting the vehicle-mounted device 20 with the power battery 10, the vehicle load, the compressor, the stator winding of the drive motor 22, the vehicle controller 300, etc.

[0104] In one embodiment, if Figure 4As shown, the vehicle-mounted device 20 includes a water-cooling radiator 110 of the motor controller 100 and a water-cooling radiator 210 of the vehicle-mounted charger 200. The water-cooling radiator 110 of the motor controller 100 is used to cool down the electrical components of the motor controller 100, and the water-cooling radiator 210 of the vehicle-mounted charger 200 is used to cool down the electrical components of the vehicle-mounted charger 200. The integrated bracket 500 includes a water-cooling channel (not shown). The water-cooling radiator 110 of the motor controller 100 and the water-cooling radiator 210 of the vehicle-mounted charger 200 are connected in parallel or in series through the water-cooling channel in the integrated bracket 500, so that the overall cooling efficiency of the vehicle-mounted device 20 is higher.

[0105] Figure 5 is a schematic diagram of a vehicle-mounted device 20 provided in another embodiment of the present application. Figure 6 yes Figure 5 FIG. 2 is an exploded view of the vehicle-mounted device 20 .

[0106] In one embodiment, if Figure 5 and Figure 6 As shown, the vehicle-mounted device 20 further includes a driving motor 22 and a reducer 23, and the housing 400 includes an integrated housing 410, which includes an electrical receiving slot 411, a motor receiving slot 412, and a reducer receiving slot 413. The electrical receiving slot 411 is used to receive at least one electrical component of the vehicle-mounted charger 200 or the motor controller 100, and the bottom 4111 of the electrical receiving slot 411 is used to fix and receive the integrated bracket 500, which is used to carry at least one electrical component of the vehicle-mounted charger 200 or the motor controller 100. The motor receiving slot 412 is used to fix and receive the stator of the driving motor 22, and the reducer receiving slot 413 is used to receive the gear set of the reducer 23. Among them, the motor accommodating groove 412 and the reducer accommodating groove 413 are arranged adjacent to each other along the axial direction Y of the driving motor 22, the notch direction of the motor accommodating groove 412 is opposite to the notch direction of the reducer accommodating groove 413, and the direction of the notch 4112 of the electrical accommodating groove 411 is perpendicular to the notch direction of the motor accommodating groove 412 and the notch direction of the reducer accommodating groove 413.

[0107] The vehicle-mounted device 20 provided in an embodiment of the present application will be described in detail below.

[0108] Figure 7 is a schematic diagram of an integrated housing 410 provided in an embodiment of the present application. Figure 8 is an exploded view of the vehicle-mounted device 20 provided in an embodiment of the present application, Fig. 9 is another schematic diagram of the vehicle-mounted device 20 provided in an embodiment of the present application, Fig.10 It is a schematic diagram of an integrated bracket 500 provided in an embodiment of the present application.

[0109] In one embodiment, if Figure 3 and Figure 4 As shown, a water-cooled vehicle-mounted device 20 includes at least one of a vehicle-mounted charger 200 or a motor controller 100, and a housing 400 of the vehicle-mounted device 20 includes an integrated housing 410 and an electrical cover 420, such as Figure 7 As shown, the integrated housing 410 includes an electrical receiving slot 411, and the electrical cover 420 is used to enclose the electrical receiving slot 411, wherein Figure 4 and Figure 8 As shown, the electrical receiving groove 411 is used to accommodate the integrated bracket 500, the first circuit board 600 and the electrical components of at least one of the on-board charger 200 or the motor controller 100. The first circuit board 600 is used to carry the electrical components of at least one of the on-board charger 200 or the motor controller 100. The integrated bracket 500 is arranged between the first circuit board 600 and the groove bottom 4111 of the electrical receiving groove 411.

[0110] In the embodiment of the present application, the first circuit board 600 is used to carry at least one electrical component of the on-board charger 200 or the motor controller 100, and the integrated bracket 500 is arranged between the first circuit board 600 and the bottom 4111 of the electrical receiving slot 411, so that the integrated bracket 500 can support at least one electrical component of the on-board charger 200 or the motor controller 100, so that when the on-board device 20 is assembled, at least one electrical component of the on-board charger 200 or the motor controller 100 can be installed and fixed to the integrated bracket 500 and then assembled into the electrical receiving slot 411, which facilitates the assembly process and reduces the difficulty of assembly. Figure 7 It can be seen that the bottom 4111 of the electrical receiving groove 411 is not a flat installation surface. The integrated bracket 500 is arranged between the first circuit board 600 and the bottom 4111 of the electrical receiving groove 411. The integrated bracket 500 is used to install and fix at least one electrical component of the on-board charger 200 or the motor controller 100. It also makes it unnecessary for at least one electrical component of the on-board charger 200 or the motor controller 100 to be directly fixed on the bottom 4111 of the electrical receiving groove 411, which facilitates the installation and arrangement of the on-board charger 200 or the motor controller 100, helps to make the arrangement of the on-board charger 200 or the motor controller 100 more regular, and can also improve the stability of the electrical connection of the on-board device 20.

[0111] In one embodiment, if Figure 8As shown, the bottom 4111 of the electrical receiving groove 411 is used to fix the integrated bracket 500. In the embodiment of the present application, the integrated bracket 500 is used to fix the electrical components of at least one of the on-board charger 200 or the motor controller 100. The motor controller 100 of the on-board device 20 and the electrical components of the on-board charger 200 are fixed together by an integrated bracket 500 to form an integrated module 20a. During assembly, the motor controller 100 and the on-board charger 200 can be installed on the integrated bracket 500 and then installed in the electrical receiving groove 411, so that the assembly and installation process of the motor controller 100 and the on-board charger 200 is simpler.

[0112] In one embodiment, the integrated bracket 500 is also used to cool the electrical components of at least one of the onboard charger 200 or the motor controller 100. Figure 7 As shown, the integrated housing 410 further includes an internal water inlet channel 430, an inlet 431 of the internal water inlet channel 430 is distributed outside the electrical receiving slot 411, and an outlet 432 of the internal water inlet channel 430 is distributed inside the electrical receiving slot 411. Fig. 9 and Fig.10 As shown, the integrated bracket 500 includes a bracket water channel inlet 501 and at least one radiator water channel interface 502. Figure 7 and Fig. 9 As shown, the bracket water channel inlet 501 is used to receive cooling water output from the outlet 432 of the internal water inlet channel 430, and each radiator water channel interface 502 is used to deliver cooling water to at least one of the water-cooled radiator 210 of the on-board charger 200 or the water-cooled radiator 110 of the motor controller 100.

[0113] In the embodiment of the present application, the inlet 431 of the internal water inlet channel 430 is distributed outside the groove of the electrical receiving groove 411, so that the inlet 431 of the internal water inlet channel 430 is conveniently connected to the external cooling water pipe, and the outlet 432 of the internal water inlet channel 430 is distributed inside the groove of the electrical receiving groove 411, so that the cooling water in the cooling system of the whole vehicle can flow into the internal water inlet channel 430 of the integrated shell 410 through the outlet 432 of the internal water inlet channel 430, and enter the interior of the electrical receiving groove 411 of the integrated shell 410 through the outlet 432 of the internal water inlet channel 430, so as to cool down the electrical components in the electrical receiving groove 411.

[0114] In an embodiment of the present application, the integrated bracket 500 includes a bracket water channel inlet 501 and at least one radiator water channel interface 502. The bracket water channel inlet 501 is used to receive cooling water output from the outlet 432 of the internal water inlet channel 430, so that the cooling water flowing into the electrical containing groove 411 from the internal water inlet channel 430 of the integrated shell 410 can flow from the bracket water channel inlet 501 into the internal flow channel 570 of the integrated bracket 500 to dissipate heat for at least one electrical component of the on-board charger 200 or the motor controller 100 installed and fixed on the integrated bracket 500. Each radiator water channel interface 502 is used to deliver cooling water to at least one of the water-cooled radiator 210 of the on-board charger 200 or the water-cooled radiator 110 of the motor controller 100, so that the water-cooled radiator 210 of the on-board charger 200 and the water-cooled radiator 110 of the motor controller 100 can be connected to the internal water inlet of the integrated shell 410 through the integrated bracket 500, so that the coolant from the cooling system of the whole vehicle can be delivered to the water-cooled radiator 210 of the on-board charger 200 and the water-cooled radiator 110 of the motor controller 100, thereby cooling the on-board charger 200 and the motor controller 100 to ensure the normal operation of the on-board device 20.

[0115] In the embodiment of the present application, the internal flow channel 570 of an integrated bracket 500 is used to connect the water-cooled radiator 210 of the on-board charger 200 and the water-cooled radiator 110 of the motor controller 100 installed in the electrical receiving groove 411 with the internal water inlet channel 430 of the integrated shell 410, so that the cooling system layout in the on-board device 20 is more compact and the structural integration of the water channel is higher. The integrated bracket 500 can also be used to carry at least one electrical component of the on-board charger 200 or the motor controller 100, so that the electrical components in the integrated shell 410 are highly integrated with the water cooling system, and the components of the on-board device 20 can also be made more compact, which is beneficial to make the on-board device 20 have a smaller volume while improving the cooling efficiency of the on-board device 20.

[0116] In one embodiment, if Figure 7 , Figure 8 and Fig.10 As shown, the bottom 4111 of the electrical receiving slot 411 is used to fix the integrated bracket 500. Fig.10 As shown, the integrated bracket 500 also includes a plurality of first support members 511, which are distributed on one side of the integrated bracket 500 facing the slot 4112 of the electrical receiving slot 411, and the plurality of first support members 511 are used to fix and support the first circuit board 600, and the side of the first circuit board 600 facing the electrical receiving slot 411 is used to fix the electrical components of at least one of the on-board charger 200 or the motor controller 100.

[0117] In an embodiment of the present application, the integrated bracket 500 is arranged between the first circuit board 600 and the bottom 4111 of the electrical receiving slot 411. The integrated bracket 500 also includes a plurality of first support members 511. The first support members 511 are distributed on the side of the integrated bracket 500 facing the slot 4112 of the electrical receiving slot 411, so that the plurality of first support members 511 are closer to the first circuit board 600, making it convenient for the plurality of first support members 511 to fix and support the first circuit board 600, thereby making the structure of the vehicle-mounted device 20 more secure.

[0118] In the embodiment of the present application, the side of the first circuit board 600 facing the electrical receiving groove 411 is used to fix the electrical components of at least one of the on-board charger 200 or the motor controller 100, so that the electrical components of at least one of the on-board charger 200 or the motor controller 100 can be arranged between the first circuit board 600 and the integrated bracket 500, limiting the movement space of at least one of the electrical components of the on-board charger 200 or the motor controller 100, which is conducive to making the installation and fixation of at least one of the electrical components of the on-board charger 200 or the motor controller 100 more firmly, thereby improving the reliability of the vehicle-mounted device 20.

[0119] Fig.11 It is another exploded view of the vehicle-mounted device 20 provided in an embodiment of the present application.

[0120] In one embodiment, if Fig.10 and Fig.11 As shown, the electrical receiving slot 411 is also used to accommodate a second circuit board 700, and the second circuit board 700 is used to carry at least one electrical component of the vehicle charger 200. The integrated bracket 500 also includes a plurality of second support members 512, and the plurality of second support members 512 are distributed on one side of the integrated bracket 500 facing the notch 4112 of the electrical receiving slot 411. The plurality of second support members 512 are used to fix and support the second circuit board 700, and the second circuit board 700 is arranged between the first circuit board 600 and the integrated bracket 500.

[0121] In an embodiment of the present application, the second circuit board 700 is arranged between the first circuit board 600 and the integrated bracket 500. The integrated bracket 500 also includes a plurality of second support members 512. The plurality of second support members 512 are distributed on one side of the integrated bracket 500 facing the slot 4112 of the electrical receiving slot 411, so that the plurality of second support members 512 are closer to the second circuit board 700, making it convenient for the plurality of second support members 512 to support and fix the second circuit board 700, thereby making the structure of the vehicle-mounted device 20 more secure.

[0122] In the embodiment of the present application, the second circuit board 700 is arranged between the first circuit board 600 and the integrated bracket 500, which can save space compared to arranging the second circuit board 700 and the first circuit board 600 in a flat manner. Since the second circuit board 700 is used to carry at least one electrical component of the on-board charger 200, and the first circuit board 600 also carries the electrical components of the on-board charger 200, the second circuit board 700 is arranged between the first circuit board 600 and the integrated bracket 500, which can also make the electrical components of the on-board charger 200 more compact, thereby improving the integration and integration of the on-board device 20.

[0123] In one embodiment, the second circuit board 700 is used to carry the DC converter of the vehicle charger 200. In one embodiment, the DC converter is used to convert high-voltage DC power into low-voltage DC power to power the vehicle low-voltage load or the vehicle low-voltage battery.

[0124] In one embodiment, the height of the second support member 512 is less than the height of the first support member 511, so that the second circuit board 700 is stacked between the first circuit board 600 and the integrated bracket 500, so that the first circuit board 600, the second circuit board 700 and the electrical components carried by each can be stacked, making the electrical components of the vehicle charger 200 more compact, thereby improving the integration and fusion of the vehicle device 20.

[0125] Fig.12 It is another schematic diagram of the vehicle-mounted device 20 provided in an embodiment of the present application.

[0126] In one embodiment, if Figures 10 to 12 As shown, the integrated bracket 500 also includes at least one shielding wall 520, and the at least one shielding wall 520 is distributed on one side of the integrated bracket 500 facing the slot 4112 of the electrical receiving slot 411, and the at least one shielding wall 520 includes a first shielding wall 521, and the first shielding wall 521 is used to isolate the electrical components of the on-board charger 200 and the electrical components of the motor controller 100.

[0127] In the embodiment of the present application, at least one shielding wall 520 is distributed on one side of the integrated bracket 500 facing the notch 4112 of the electrical receiving slot 411, so that at least one shielding wall 520 can fix and support the first circuit board 600, further improving the reliability of the vehicle-mounted device 20. The first shielding wall 521 is used to isolate the electrical components of the vehicle-mounted charger 200 and the electrical components of the motor controller 100, so that the first shielding wall 521 can electrically isolate the electrical components of the vehicle-mounted charger 200 and the electrical components of the motor controller 100, which is conducive to the electrical components of the vehicle-mounted charger 200 and the electrical components of the motor controller 100 can work relatively independently, and ensure the normal operation of the vehicle-mounted device 20.

[0128] In one embodiment, if Fig.10 and Fig.11 As shown, the integrated bracket 500 further includes a position avoidance hole 530, and the position avoidance hole 530 penetrates the integrated bracket 500 along the stacking direction Z of the electrical cover plate 420 and the electrical receiving slot 411, as shown in FIG. Fig. 9 and Fig.12 As shown, the avoidance hole 530 is used to accommodate the bus capacitor 120 of the motor controller 100 , and the avoidance hole 530 is located on a side of the first shielding wall 521 away from the electrical components of the on-board charger 200 .

[0129] In the embodiment of the present application, since the height of the bus capacitor 120 of the motor controller 100 along the stacking direction Z of the electrical cover 420 and the electrical receiving groove 411 is relatively large, the bus capacitor 120 of the motor controller 100 is accommodated in the avoidance hole 530 of the integrated bracket 500. This allows the bus capacitor 120 of the motor controller 100 to not occupy additional space of the vehicle-mounted device 20 along the stacking direction Z of the electrical cover 420 and the electrical receiving groove 411, which is beneficial for making the volume of the vehicle-mounted device 20 smaller.

[0130] In the embodiment of the present application, the avoidance hole 530 is located on the side of the first shielding wall 521 away from the electrical components of the on-board charger 200, so that the arrangement of the bus capacitor 120 of the motor controller 100 can make full use of the space on the side of the first shielding wall 521 away from the electrical components of the on-board charger 200, and also allows the motor controller 100 and the on-board charger 200 to be arranged flat, and then can share the first circuit board 600, which is beneficial to simplify the electrical connection lines between the on-board charger 200 and the motor controller 100, thereby making the on-board charger 200 and the motor controller 100 more integrated and reducing the space volume occupied by the on-board charger 200 and the motor controller 100.

[0131] In one embodiment, if Fig. 9 and Fig.12 As shown, the three-phase output copper busbar 130 of the motor controller 100 passes through a portion of the avoidance hole 530 between the bus capacitor 120 of the motor controller 100 and the first shielding wall 521 .

[0132] In the embodiment of the present application, the three-phase output copper bus 130 is used to power the stator winding of the drive motor 22. The three-phase output copper bus 130 transmits the alternating current converted by the power module 140 of the motor controller 100 to the stator winding of the drive motor 22, so that the drive motor 22 moves.

[0133] In the embodiment of the present application, the three-phase output copper bar 130 passes through the partial avoidance hole 530 between the bus capacitor 120 of the motor controller 100 and the first shielding wall 521, so that the arrangement of the electrical components of the motor controller 100 and the on-board charger 200 is more compact, and the space of the integrated bracket 500 is more fully utilized, which is conducive to the miniaturization of the vehicle-mounted device 20. It also makes the distance between the three-phase output copper bar 130 and the stator winding of the drive motor 22 closer, and the length of the three-phase output copper bar 130 can be shortened. Compared with the three-phase output copper bar 130 coming out from the side of the vehicle-mounted device 20, the position of the vehicle-mounted device 20 used to connect the stator winding of the drive motor 22 in this solution is located in the middle position of the vehicle-mounted device 20, which can make the side structure of the vehicle-mounted device 20 simpler.

[0134] In one embodiment, if Fig.10 and Fig.12 As shown, at least one shielding wall 520 also includes a second shielding wall 522, which is arranged on the side of the first shielding wall 521 away from the electrical components of the motor controller 100, and the space between the second shielding wall 522 and the first shielding wall 521 is used to accommodate the electrical components of the vehicle charger 200.

[0135] In the embodiment of the present application, the second shielding wall 522 can provide support for the first circuit board 600, thereby improving the reliability of the vehicle-mounted device 20. The space between the second shielding wall 522 and the first shielding wall 521 is used to accommodate the electrical components of the vehicle-mounted charger 200. The first shielding wall 521 and the second shielding wall 522 can shield the electrical signals of the electrical components of the vehicle-mounted charger 200 from the electrical signals of other electrical components in the vehicle-mounted device 20, which is conducive to ensuring that the electrical components of the vehicle-mounted charger 200 work normally.

[0136] In one embodiment, if Figure 4 As shown, at least one shielding wall 520 further includes a third shielding wall 523. Along the arrangement direction X of the first shielding wall 521 and the second shielding wall 522, the second shielding wall 522, the third shielding wall 523 and the first shielding wall 521 are arranged in sequence. The space between the second shielding wall 522 and the third shielding wall 523 is used to accommodate the AC filter component 220. Figure 8 and Fig.10 As shown, the second shielding wall 522 and the third shielding wall 523 form a first opening 503 at one end of the slot wall close to the electrical receiving slot 411. The first opening 503 is used to accommodate the first interface 230. The on-board charger 200 is used to receive the AC power provided by the external power supply through the first interface 230. The electrical receiving slot 411 includes a first mounting hole 4113, which is aligned with the first opening 503. The first mounting hole 4113 is used to install the first connector 201, and the first connector 201 is used to electrically connect the first interface 230 and the external power supply.

[0137] In the embodiment of the present application, the third shielding wall 523 can provide support for the first circuit board 600, thereby improving the reliability of the vehicle-mounted device 20. Along the arrangement direction X of the first shielding wall 521 and the second shielding wall 522, the second shielding wall 522, the third shielding wall 523 and the first shielding wall 521 are arranged in sequence, and the space between the second shielding wall 522 and the third shielding wall 523 is used to accommodate the AC filter component 220, so that along the arrangement direction X of the first shielding wall 521 and the second shielding wall 522, the AC filter component 220 can be electrically isolated from other electrical components of the vehicle-mounted charger 200, ensuring that the operation of the AC filter component 220 is not subject to electrical interference from other electrical components. The second shielding wall 522 and the third shielding wall 523 form a first opening 503 at one end of the groove wall near the electrical receiving groove 411. The first opening 503 is used to accommodate the first interface 230. The on-board charger 200 is used to receive the AC power provided by the external power supply through the first interface 230, so that the first interface 230 can be electrically isolated from other electrical components of the on-board charger 200 along the arrangement direction X of the first shielding wall 521 and the second shielding wall 522, ensuring that the operation of the first interface 230 is not subject to electrical interference from other electrical components. It also allows the AC power transmitted from the first interface 230 to the on-board charger 200 to be filtered for harmonics by the AC filter component 220 before being transmitted to other electrical components of the on-board charger 200.

[0138] In an embodiment of the present application, the electrical accommodating slot 411 includes a first mounting hole 4113, which is aligned with the first opening 503, so as to facilitate the plug-in connection between the first connector 201 passing through the first mounting hole 4113 of the electrical accommodating slot 411 and the first interface 230 accommodated in the first opening 503, and the first connector 201 is used to electrically connect the first interface 230 and the external power supply, so that the input alternating current of the external power supply can be transmitted from the first connector 201 and the first interface 230 to the electrical components of the vehicle charger 200 in sequence.

[0139] In one embodiment, at least one shielding wall 520 further includes a fourth shielding wall 524, such as Fig.10 As shown, along the arrangement direction X of the first shielding wall 521 and the second shielding wall 522, the third shielding wall 523, the fourth shielding wall 524 and the first shielding wall 521 are arranged in sequence, and the third shielding wall 523 and the fourth shielding wall 524 are close to one end of the groove wall of the electrical receiving groove 411 to form a second opening 504, as shown in FIG. Figure 8 and Fig.10As shown, the second opening 504 is used to accommodate the second interface 240, the on-board charger 200 is used to supply power to the compressor through the second interface 240, and the second opening 504 is on the same side as the first opening 503. The electrical receiving slot 411 also includes a second mounting hole 4114, which is aligned with the second opening 504, and the second mounting hole 4114 is used to mount the second connector 202, which is used to electrically connect the second interface 240 and the compressor, and the second mounting hole 4114 is on the same side as the first mounting hole 4113.

[0140] In the embodiment of the present application, the fourth shielding wall 524 can provide support for the first circuit board 600, thereby improving the reliability of the vehicle-mounted device 20. Along the arrangement direction X of the first shielding wall 521 and the second shielding wall 522, the third shielding wall 523, the fourth shielding wall 524 and the first shielding wall 521 are arranged in sequence, and the third shielding wall 523 and the fourth shielding wall 524 form a second opening 504 at one end of the groove wall close to the electrical accommodation groove 411. The second opening 504 is used to accommodate the second interface 240, so that along the arrangement direction X of the first shielding wall 521 and the second shielding wall 522, the second interface 240 can be electrically isolated from the AC filter component 220, the first interface 230 and other electrical components of the vehicle-mounted charger 200, so that the operation of the second interface 240 is not subject to electrical interference from other electrical components.

[0141] In the embodiment of the present application, the on-board charger 200 is used to supply power to the compressor through the second interface 240, and the second opening 504 and the first opening 503 are on the same side, so that the first interface 230 and the second interface 240 of the on-board charger 200 are arranged more regularly.

[0142] In an embodiment of the present application, the electrical receiving slot 411 also includes a second mounting hole 4114, which is aligned with the second opening 504, so as to facilitate the plug-in connection between the second connector 202 passing through the second mounting hole 4114 of the electrical receiving slot 411 and the second interface 240 accommodated by the second opening 504, and the second connector 202 is used to electrically connect the second interface 240 and the compressor, so as to facilitate the on-board charger 200 to provide current to the compressor and drive the compressor to work.

[0143] In the embodiment of the present application, the second mounting hole 4114 is on the same side as the first mounting hole 4113, so that the opening of the electrical receiving slot 411 is more regular, and the current flowing into the on-board charger 200 from the first interface 230 passing through the first mounting hole 4113 is more quickly transmitted to the compressor through the second interface 240 passing through the second mounting hole 4114.

[0144] In one embodiment, if Fig.10 and Fig.11As shown, the integrated bracket 500 further includes a low-voltage installation groove 540, the notch 541 of the low-voltage installation groove 540 faces the electrical cover 420, the low-voltage installation groove 540 is used to accommodate the third interface 250, the on-board charger 200 is used to supply power to the on-board load through the third interface 250, and the low-voltage installation groove 540 is opposite to the first opening 503 along the opening direction Y of the first installation hole 4113. The electrical accommodation slot 411 further includes a third installation hole 4115, the third installation hole 4115 is aligned with the low-voltage installation groove 540, the third installation hole 4115 is used to install the third connector 203, and the third connector 203 is used to electrically connect the third interface 250 and the on-board load.

[0145] In the embodiment of the present application, the low-voltage installation groove 540 is used to accommodate the third interface 250. The low-voltage installation groove 540 can serve as a shielding chamber for the third interface 250, so that the third interface 250 can be electrically isolated from other electrical components of the on-board charger 200, reducing the electrical interference of other electrical components to the third interface 250. The notch 541 of the low-voltage installation groove 540 faces the electrical cover 420, which facilitates the installation and placement of the third interface 250 from above the low-voltage installation groove 540. The third interface 250 is used to connect the DC converter of the on-board charger 200 carried by the second circuit board 700.

[0146] In the embodiment of the present application, the low-voltage mounting groove 540 is opposite to the first opening 503 along the opening direction Y of the first mounting hole 4113, so that the low-voltage mounting groove 540 and the first opening 503 on the integrated bracket 500 are arranged more regularly. Among them, the opening direction Y of the first mounting hole 4113 is the same as the axial direction Y of the drive motor 22.

[0147] In the embodiment of the present application, the electrical receiving slot 411 further includes a third mounting hole 4115, which is aligned with the low-voltage mounting groove 540, so that the third connector 203 passing through the third mounting hole 4115 of the electrical receiving slot 411 can be docked with the third interface 250 accommodated in the low-voltage mounting groove 540, and the third connector 203 is used to electrically connect the third interface 250 and the vehicle load, so that the vehicle charger 200 can provide current to the vehicle load through the third interface 250 and the third connector 203. In the embodiment of the present application, the vehicle load is a 12V low-voltage load.

[0148] In one embodiment, the low-pressure mounting groove 540 includes two notches 5411, 5412. Fig.10 and Fig.11 As shown, along the stacking direction Z of the electrical cover plate 420 and the electrical receiving slot 411 , one slot 5411 faces away from the electrical receiving slot 411 , and along the opening direction Y of the first mounting hole 4113 , another slot 5412 faces away from the first opening 503 .

[0149] In the embodiment of the present application, along the stacking direction Z of the electrical cover 420 and the electrical receiving slot 411, one slot 5411 faces away from the electrical receiving slot 411, so that the third interface 250 can be installed and placed from above one slot 5411, simplifying the assembly process of the vehicle-mounted device 20, and along the opening direction Y of the first mounting hole 4113, another slot 5412 faces away from the first opening 503, which facilitates the installation of the third interface 250 and the third connecting member 203 for connecting to the external vehicle-mounted load at the position of the other slot 5412, which is beneficial to simplify the connection cable between the third interface 250 and the external load.

[0150] In one embodiment, if Fig.10 As shown, the integrated bracket 500 further includes a transformer slot 551, a PFC inductor slot 552 and a PFC capacitor slot 553. The first shielding wall 521, the transformer slot 551, the PFC inductor slot 552 and the second shielding wall 522 are sequentially arranged along the arrangement direction X of the first shielding wall 521 and the second shielding wall 522, and the third shielding wall 523, the PFC inductor slot 552 and the PFC capacitor slot 553 are sequentially arranged along the opening direction Y of the first mounting hole 4113.

[0151] In the embodiments of the present application, Fig.10 and Fig.12 As shown, the transformer slot 551 is used to accommodate the transformer 260 of the vehicle-mounted device 20, the PFC inductor slot 552 is used to accommodate multiple inductors 270 of the vehicle-mounted charger 200, and the PFC capacitor slot 553 is used to accommodate multiple capacitors 280 of the vehicle-mounted charger 200. The arrangement of the transformer slot 551, the PFC inductor slot 552, and the PFC capacitor slot 553 can improve the structural firmness of the vehicle-mounted charger 200, which is conducive to improving the stability of the vehicle-mounted charger 200 and reducing the electrical influence between the various electrical components of the vehicle-mounted charger 200.

[0152] in, Fig.12 The transformer 260, inductor 270 and capacitor 280 are only for illustration and do not represent specific structures.

[0153] In one embodiment, if Figure 7 and Fig. 9 As shown, the outlet 432 of the internal water inlet channel 430 is distributed at the bottom 4111 of the electrical receiving slot 411, and the bracket water channel inlet 501 is used to connect with the outlet 432 of the internal water inlet channel 430. The direction of the outlet 432 of the internal water inlet channel 430 is the same as the direction of the slot 4112 of the electrical receiving slot 411, and the direction of the bracket water channel inlet 501 is opposite to the direction of the slot 4112 of the electrical receiving slot 411.

[0154] In the embodiment of the present application, the outlet 432 of the internal water inlet channel 430 is distributed at the bottom 4111 of the electrical containing groove 411, and the bracket water channel inlet 501 is used to connect with the outlet 432 of the internal water inlet channel 430, so that the cooling water flowing into the internal water inlet channel 430 of the integrated shell 410 can enter the integrated bracket 500 from the bracket water channel inlet 501, thereby cooling the electrical components of the on-board charger 200 and the electrical components of the motor controller 100.

[0155] In the embodiment of the present application, the orientation of the outlet 432 of the internal water inlet channel 430 is the same as the orientation of the slot 4112 of the electrical receiving slot 411, and the orientation of the bracket water channel inlet 501 is opposite to the orientation of the slot 4112 of the electrical receiving slot 411, so that the orientation of the outlet 432 of the internal water inlet channel 430 is opposite to the orientation of the bracket water channel inlet 501, which facilitates the bracket water channel inlet 501 to more smoothly receive the cooling water output from the outlet 432 of the internal water inlet channel 430, speeds up the delivery speed of the cooling water into the internal flow channel 570 of the integrated bracket 500, and enables each radiator water channel interface 502 of the integrated bracket 500 to more quickly deliver cooling water to the water-cooled radiator 210 of the on-board charger 200 or the water-cooled radiator 110 of the motor controller 100, which is beneficial to improving the cooling efficiency of the on-board device 20.

[0156] In one embodiment, if Figure 7 and Fig. 9 As shown, the outlet 432 of the internal water inlet channel 430 protrudes from the bottom 4111 of the electrical receiving groove 411 , and the bracket water channel inlet 501 is used to be embedded in the outlet 432 of the internal water inlet channel 430 .

[0157] In the embodiment of the present application, the outlet 432 of the internal water inlet channel 430 protrudes from the bottom 4111 of the electrical receiving groove 411, which facilitates the bracket water channel inlet 501 of the integrated bracket 500 to be embedded in the outlet 432 of the internal water inlet channel 430, and also enables the outlet 432 of the internal water inlet channel 430 to provide support for the integrated bracket 500, so that the integrated bracket 500 is fixed to the bottom 4111 of the electrical receiving groove 411 more firmly. The bracket water channel inlet 501 is used to be embedded in the outlet 432 of the internal water inlet channel 430, which facilitates the positioning and installation of the integrated bracket 500 and the electrical receiving groove 411. It can also make the connection between the outlet 432 of the internal water inlet channel 430 and the bracket water channel inlet 501 more sealed to prevent cooling water leakage.

[0158] In one embodiment, a sealing ring is provided between the bracket water channel inlet 501 and the outlet 432 .

[0159] Fig.13 It is another exploded view of the vehicle-mounted device 20 provided in an embodiment of the present application.

[0160] In one embodiment, if Figure 4 and Fig.10 As shown, at least one radiator water channel interface 502 includes a first radiator water channel interface 502a, and the first radiator water channel interface 502a is used to connect to the water cooling radiator 210 of the on-board charger 200. Figure 4 As shown, the first radiator water channel interface 502a is distributed on one side of the integrated bracket 500 facing the electrical cover 420, as shown in FIG. Fig. 9 and Fig.11 As shown, the bracket water channel inlet 501 is distributed on a side of the integrated bracket 500 away from the electrical cover 420 , and the direction of the first radiator water channel interface 502 a is opposite to the direction of the bracket water channel inlet 501 .

[0161] In the embodiment of the present application, the water-cooled radiator 210 of the on-board charger 200 is arranged close to the electrical cover 420, and the first radiator water channel interface 502a is distributed on the side of the integrated bracket 500 facing the electrical cover 420, so as to facilitate the communication between the first radiator water channel interface 502a and the water-cooled radiator 210 of the on-board charger 200, thereby delivering the cooling water of the internal water inlet channel 430 to the water-cooled radiator 210 of the on-board charger 200, thereby cooling the electrical components of the on-board charger 200. In one embodiment, as Figure 8 As shown, the multiple power switch tubes 290 in the on-board charger 200 are carried on the side of the first circuit board 600 facing the electrical cover 420 , and the water-cooled radiator 210 of the on-board charger 200 is used to cool the multiple power switch tubes 290 in the on-board charger 200 .

[0162] In the embodiment of the present application, the bracket water channel inlet 501 is distributed on a side of the integrated bracket 500 away from the electrical cover 420 , so as to facilitate the connection between the bracket water channel inlet 501 and the outlet 432 of the internal water inlet channel 430 .

[0163] In the embodiments of the present application, Figure 7 , Fig. 9 and Fig.10 As shown, the direction of the first radiator water channel interface 502a is opposite to the direction of the bracket water channel inlet 501, so that the cooling water from the vehicle cooling system can smoothly flow through the inlet 431 of the internal water inlet channel 430, the outlet 432 of the internal water inlet channel 430, the bracket water channel inlet 501, and the first radiator water channel interface 502a into the water-cooled radiator 210 of the on-board charger 200, thereby cooling the electrical components of the on-board charger 200.

[0164] In one embodiment, if Figure 4 , Fig.10 and Fig.13 As shown, the integrated bracket 500 includes a support column 560, such as Fig.10 As shown, the support column 560 protrudes from the side of the integrated bracket 500 facing the electrical cover plate 420, and the end surface of the support column 560 facing the electrical cover plate 420 includes a groove 561, as shown in FIG. Fig.13 As shown, the groove 561 is used to fix the water-cooling radiator 210 of the on-board charger 200 , and the first circuit board 600 is arranged between the water-cooling radiator 210 of the on-board charger 200 and the integrated bracket 500 .

[0165] In the embodiment of the present application, the support column 560 protrudes from the side of the integrated bracket 500 facing the electrical cover 420, so that the support column 560 can support the water-cooled radiator, so that the gravity of the water-cooled radiator will not directly act on the first circuit board 600, and thus will not affect the normal operation of the first circuit board 600.

[0166] In the embodiment of the present application, the end surface of the support column 560 facing the electrical cover 420 includes a groove 561, and the groove 561 is used to fix the water-cooled radiator 210 of the on-board charger 200, so that the water-cooled radiator 210 of the on-board charger 200 can be directly positioned through the groove 561 of the support column 560 during assembly, thereby simplifying the assembly process.

[0167] In the embodiment of the present application, the first circuit board 600 is arranged between the water-cooled radiator 210 of the on-board charger 200 and the integrated bracket 500, so that the electrical components of the on-board charger 200 can be arranged in the internal flow channel 570 (such as the internal flow channel 570 of the water-cooled radiator 210 of the on-board charger 200 and the integrated bracket 500) of the on-board charger 200. Fig.16 As shown), the cooling water in the water-cooled radiator 210 of the on-board charger 200 and the internal flow channel 570 of the integrated bracket 500 can cool down the electrical components of the on-board charger 200 at the same time, thereby improving the cooling efficiency of the on-board charger 200 and further improving the cooling efficiency of the on-board device 20.

[0168] In one embodiment, if Fig.10 and Fig.13 As shown, the first radiator water channel interface 502a is distributed at the bottom of the groove 561, and the inlet 211 and the outlet 212 of the water-cooled radiator 210 of the on-board charger 200 are used to be embedded in the groove 561. The first radiator water channel interface 502a includes a radiator water inlet interface 5021 and a radiator water outlet interface 5022. The radiator water inlet interface 5021 is used to connect to the inlet 211 of the water-cooled radiator 210 of the on-board charger 200, and the radiator water outlet interface 5022 is used to connect to the outlet 212 of the water-cooled radiator 210 of the on-board charger 200.

[0169] In the embodiment of the present application, the first radiator water channel interface 502a is distributed at the bottom of the groove 561, the inlet 211 and the outlet 212 of the water-cooled radiator 210 of the on-board charger 200 are used to be embedded in the groove 561, and the radiator water inlet interface 5021 is used to connect to the inlet 211 of the water-cooled radiator 210 of the on-board charger 200, so that the cooling water output from the radiator water inlet interface 5021 of the first radiator water channel interface 502a can be input into the inlet 211 of the water-cooled radiator 210 of the on-board charger 200 in the shortest path. The radiator water outlet interface 5022 is used to connect to the outlet 212 of the water-cooled radiator 210 of the on-board charger 200, so that the cooling water flowing out of the water-cooled radiator 210 of the on-board charger 200 can also flow back to the first radiator water channel interface 502a from the outlet 212 of the water-cooled radiator 210 of the on-board charger 200 and then connect with the bracket water channel. The cooling water flowing in the water-cooling radiator 210 of the on-board charger 200 can dissipate the heat of the electrical components of the on-board charger 200 , thereby ensuring that the on-board device 20 works normally.

[0170] Fig.14 is another schematic diagram of an integrated bracket 500 provided in an embodiment of the present application. Fig.15 yes Fig.14 A cross-sectional view of the integrated bracket 500 along AA, Fig.16 It is another exploded view of the vehicle-mounted device 20 provided in an embodiment of the present application.

[0171] In one embodiment, if Figures 13 to 16 As shown, the integrated bracket 500 includes a first internal flow channel 571 and a second internal flow channel 572. The first internal flow channel 571 is used to connect the bracket water channel inlet 501 and the radiator water inlet interface 5021, and the second internal flow channel 572 is used to connect the radiator water outlet interface 5022 and the inlet 111 of the water-cooled radiator 110 of the motor controller 100. The first internal flow channel 571 and the second internal flow channel 572 are distributed inside the support column 560, and the first internal flow channel 571 and the second internal flow channel 572 pass through the support column 560 along the stacking direction Z of the electrical cover plate 420 and the electrical receiving groove 411.

[0172] In the embodiment of the present application, the first internal flow channel 571 is used to connect the bracket water channel inlet 501 and the radiator water inlet interface 5021, so that the cooling water flowing into the integrated bracket 500 from the bracket water channel inlet 501 can flow through the first internal flow channel 571, the radiator water inlet interface 5021, and the inlet 211 of the water-cooled radiator 210 of the on-board charger 200 in sequence and flow into the water-cooled radiator 210 of the on-board charger 200 to cool down the electrical components of the on-board charger 200. The second internal flow channel 572 is used to connect the radiator water outlet interface 5022 and the inlet 111 of the water-cooled radiator 110 of the motor controller 100, so that the cooling water flowing through the water-cooled radiator 210 of the on-board charger 200 can flow from the outlet 212 of the water-cooled radiator 210 of the on-board charger 200, the radiator water outlet interface 5022, and the second internal flow channel 572 into the inlet 111 of the water-cooled radiator 110 of the motor controller 100, so that the water-cooled radiator 110 of the motor controller 100 can cool down the electrical components of the motor controller 100, and also realize the series connection between the water-cooled radiator 210 of the on-board charger 200 and the water-cooled radiator 110 of the motor controller 100, so that the on-board device 20 has a higher degree of integration.

[0173] In the embodiment of the present application, the first internal flow channel 571 and the second internal flow channel 572 are distributed inside the support column 560, so that the first internal flow channel 571 and the second internal flow channel 572 can be directly formed with the help of the support column 560, and the first internal flow channel 571 and the second internal flow channel 572 can also cool down the electrical components of the vehicle charger 200 installed and fixed to the integrated bracket 500. The first internal flow channel 571 and the second internal flow channel 572 penetrate the support column 560 along the stacking direction Z of the electrical cover plate 420 and the electrical receiving groove 411, so as to facilitate the processing of the first internal flow channel 571 and the second internal flow channel 572 on the support column 560, and also make the flow channel lengths of the first internal flow channel 571 and the second internal flow channel 572 shorter, which is beneficial for the cooling water of the internal water inlet channel 430 of the integrated shell 410 to quickly enter the water-cooling radiator 210 of the on-board charger 200 from the first internal flow channel 571, so as to cool down the electrical components of the on-board charger 200, and also to quickly transport the cooling water in the water-cooling radiator 210 of the on-board charger 200 from the second internal flow channel 572 to the water-cooling radiator 110 of the motor controller 100, thereby improving the cooling efficiency.

[0174] In one embodiment, if Fig.15 and Fig.16As shown, the integrated bracket 500 also includes a cooling groove 580 and a cooling cover plate 590. The cooling groove 580 is distributed on the side of the integrated bracket 500 away from the electrical cover plate 420. The cooling cover plate 590 is used to enclose the cooling groove 580 to form a third internal flow channel 573. The bracket water channel inlet 501 is distributed on the cooling cover plate 590. The groove bottom 581 of the cooling groove 580 includes a first connecting hole 5811 and a second connecting hole 5812. The first connecting hole 5811 and the second connecting hole 5812 respectively penetrate the groove bottom 581 of the cooling groove 580. The first connecting hole 5811 is used to connect to the radiator water inlet interface 5021 through the first internal flow channel 571, and the second connecting hole 5812 is used to connect to the radiator water outlet interface 5022 through the second internal flow channel 572. The first connecting hole 5811 and the second connecting hole 5812 are also used to connect to the inlet 111 of the water-cooled radiator 110 of the motor controller 100 through the third internal flow channel 573.

[0175] In the embodiment of the present application, the cooling grooves 580 are distributed on a side of the integrated bracket 500 away from the electrical cover 420 , so that the distribution of the cooling grooves 580 does not interfere with the arrangement of the electrical components of the onboard charger 200 and the electrical components of the motor controller 100 .

[0176] In the embodiments of the present application, Figures 13 to 16 As shown, the bracket water channel inlet 501 is distributed on the cooling cover plate 590, and the first connecting hole 5811 is used to connect to the radiator water inlet interface 5021 through the first internal flow channel 571, so that the cooling water flowing into the integrated bracket 500 from the bracket water channel inlet 501 can flow into the water-cooled radiator 210 of the on-board charger 200 from the first connecting hole 5811, the first internal flow channel 571, the radiator water inlet interface 5021, and the inlet 211 of the water-cooled radiator 210 of the on-board charger 200. The second connecting hole 5812 is used to connect to the radiator water outlet interface 5022 through the second internal flow channel 572, so that the cooling water flowing out from the outlet 212 of the water-cooled radiator 210 of the on-board charger 200 can flow out from the radiator water outlet interface 5022 and the second internal flow channel 572 to the second connecting hole 5812. The first connecting hole 5811 and the second connecting hole 5812 are also used to connect to the inlet 111 of the water-cooled radiator 110 of the motor controller 100 through the third internal flow channel 573, so that the cooling water flowing out from the water-cooled radiator 210 of the on-board charger 200 and flowing to the second connecting hole 5812 can flow to the inlet 111 of the water-cooled radiator 110 of the motor controller 100 through the third internal flow channel 573, that is, the water-cooled radiator 210 of the on-board charger 200 and the water-cooled radiator 110 of the motor controller 100 can be connected in series through the cooperation of the first connecting hole 5811, the second connecting hole 5812 and the third internal flow channel 573, so that the integration and fusion of the cooling water flow channel in the on-board device 20 are higher.

[0177] In the embodiments of the present application, Fig.12 As shown, the third internal flow channel 573 is located at the bottom of the integrated bracket 500 , and the third internal flow channel 573 is used to cool the multiple capacitors 280 , the multiple inductors 270 , and the multiple transformers 260 of the on-board charger 200 .

[0178] In one embodiment, if Fig.16 As shown, the groove bottom 581 of the cooling groove 580 also includes a first dividing protrusion 5813 and a second dividing protrusion 5814, the first dividing protrusion 5813 is used to separate the first connecting hole 5811 and the second connecting hole 5812, the second dividing protrusion 5814 is distributed on the side of the first dividing protrusion 5813 facing the first connecting hole 5811, the height of the second dividing protrusion 5814 is less than the height of the first dividing protrusion 5813, and the projection of the bracket water channel inlet 501 along the stacking direction Z of the electrical cover plate 420 and the electrical containing groove 411 is located on the side of the second dividing protrusion 5814 facing the first connecting hole 5811.

[0179] In the embodiments of the present application, Fig.15 and Fig.16 As shown, the first connecting hole 5811 is connected to the first internal flow channel 571, and the second connecting hole 5812 is connected to the second internal flow channel 572. The first separating protrusion 5813 is used to separate the first connecting hole 5811 and the second connecting hole 5812, so that the first internal flow channel 571 and the second internal flow channel 572 do not flow in parallel, so that the cooling water can flow from the first internal flow channel 571 into the water-cooled radiator 210 of the on-board charger 200. Figures 13 to 16 As shown, the second partition protrusion 5814 is distributed on the side of the first partition protrusion 5813 facing the first connecting hole 5811, and the height of the second partition protrusion 5814 is less than the height of the first partition protrusion 5813, so that a part of the cooling water flowing into the integrated bracket 500 from the bracket water channel inlet 501 can flow into the first internal flow channel 571 from the first connecting hole 5811, and then flow into the water-cooled radiator 210 of the on-board charger 200, cool the electrical components of the on-board charger 200, and then flow out from the water-cooled radiator 210 of the on-board charger 200, flow through the second internal flow channel 572 and the third internal flow channel 573, and then flow into the water-cooled radiator 110 of the motor controller 100 to cool the electrical components of the motor controller 100. It also allows another portion of cooling water flowing into the integrated bracket 500 from the bracket water channel inlet 501 to directly flow into the water-cooled radiator 110 of the motor controller 100 through the third internal flow channel 573, thereby cooling the electrical components of the motor controller 100, thereby realizing the diversion and parallel flow of cooling water output from the internal water inlet channel 430 to the bracket water channel inlet 501, thereby improving the cooling efficiency of the vehicle-mounted device 20.

[0180] In the embodiment of the present application, the projection of the bracket water channel inlet 501 along the stacking direction Z of the electrical cover plate 420 and the electrical containing groove 411 is located on the side of the second partition protrusion 5814 facing the first connecting hole 5811, so that the cooling water flowing into the integrated bracket 500 from the bracket water channel inlet 501 will not directly flow out from the third internal flow channel 573, that is, the water-cooled radiator 210 of the on-board charger 200 will not have cooling water flowing through it, thereby ensuring that the water-cooled radiator 210 of the on-board charger 200 can also cool down the electrical components of the on-board charger 200.

[0181] In one embodiment, if Fig.16 As shown, the second dividing protrusion 5814 has a throttling effect, so that the amount of cooling water flowing from the bracket water channel inlet 501 into the first connecting hole 5811 of the integrated bracket 500 and further into the first internal flow channel 571 is greater than the amount of cooling water flowing directly from the bracket water channel inlet 501 into the third internal flow channel 573, thereby improving the overall cooling efficiency of the vehicle-mounted device 20.

[0182] In one embodiment, if Fig.16 As shown, the bottom 581 of the cooling groove 580 further includes a plurality of heat dissipation teeth 5815 and a plurality of flow guide teeth 5816. The plurality of heat dissipation teeth 5815 are distributed on both sides of the first partition protrusion 5813, and the plurality of flow guide teeth 5816 are distributed on both sides of the first partition protrusion 5813. At least one of the flow guide teeth 5816 or the heat dissipation teeth 5815 on both sides of the first partition protrusion 5813 is different in quantity, shape or arrangement.

[0183] In the embodiment of the present application, the groove bottom 581 of the cooling groove 580 further includes a plurality of heat dissipation teeth 5815 and a plurality of flow guide teeth 5816. The heat dissipation teeth 5815 and the flow guide teeth 5816 have the function of guiding and stirring the cooling water. The plurality of heat dissipation teeth 5815 are distributed on both sides of the first partition protrusion 5813, and the plurality of flow guide teeth 5816 are distributed on both sides of the first partition protrusion 5813. Figures 13 to 16 As shown, the cooling water flowing directly from the bracket water channel inlet 501 into the third internal flow channel 573 and the cooling water flowing out from the water-cooled radiator 210 of the on-board charger 200 to the second connecting hole 5812 and into the third internal flow channel 573 can have more heat dissipation area with the bottom 581 of the cooling groove 580, which is beneficial to improving the cooling efficiency of the electrical components of the on-board charger 200 in the integrated bracket 500.

[0184] In the embodiment of the present application, at least one of the number, shape or arrangement of the guide teeth 5816 or the heat dissipation teeth 5815 on both sides of the first dividing protrusion 5813 is different, which can enhance the flow guiding and stirring effect of the heat dissipation teeth 5815 and the guide teeth 5816, so that the cooling water stays in the third internal flow channel 573 for a longer time, which is more conducive to cooling the electrical components of the on-board charger 200.

[0185] In one embodiment, if Figures 13 to 16 As shown, the bottom 581 of the cooling groove 580 can be divided into a first channel groove 581a and a second channel groove 581b by a first dividing protrusion 5813. The first dividing protrusion 5813 also divides the third internal flow channel 573 into two third internal sub-flow channels 5731 and 5732. The first channel groove 581a is used to form a third internal sub-flow channel 5731, and the second channel groove 581b is used for another third internal sub-flow channel 5732. One third internal sub-flow channel 5731 is used to receive cooling water from the water channel inlet 501 of the bracket directly delivered to the water-cooled radiator 110 of the motor controller 100, and the other third internal sub-flow channel 5732 is used to receive cooling water output from the second connecting hole 5812 and flowing through the water-cooled radiator 210 of the on-board charger 200, so that the third internal flow channel 573 realizes parallel flow, which is more conducive to cooling the electrical components of the on-board charger 200.

[0186] In one embodiment, if Fig.14 and Fig.16 As shown, at least one radiator water channel interface 502 further includes a second radiator water channel interface 502b, and the second radiator water channel interface 502b is used to connect to the water cooling radiator 110 of the motor controller 100. The second radiator water channel interface 502b is used to receive cooling water from at least one of the water cooling radiator 210 of the on-board charger 200 or the bracket water channel inlet 501 through the internal flow channel 570 of the integrated bracket 500.

[0187] In the embodiment of the present application, the second radiator water channel interface 502b is used to connect the water-cooled radiator 110 of the motor controller 100, and the second radiator water channel interface 502b is used to receive cooling water from at least one of the water-cooled radiator 210 of the on-board charger 200 or the bracket water channel inlet 501 through the internal flow channel 570 of the integrated bracket 500. When the second radiator water channel interface 502b is used to receive cooling water from the water-cooled radiator 210 of the on-board charger 200 through the internal flow channel 570 of the integrated bracket 500, the motor controller 100 is connected to the water-cooled radiator 110 of the motor controller 100. The cooling water in the water-cooled radiator 110 of the motor controller 100 can be connected in series with the cooling water in the water-cooled radiator 210 of the on-board charger 200. When the second radiator water channel interface 502b is used to receive cooling water from the bracket water channel inlet 501 through the internal flow channel 570 of the integrated bracket 500, the cooling water in the water-cooled radiator 110 of the motor controller 100 can be connected in parallel with the cooling water in the water-cooled radiator 210 of the on-board charger 200, which is beneficial to improving the overall cooling efficiency of the on-board device 20.

[0188] In one embodiment, if Fig.16 As shown, the inlet 111 of the water-cooled radiator 110 of the motor controller 100 is used to connect to the second radiator water channel interface 502b. The direction of the second radiator water channel interface 502b is opposite to the direction of the bracket water channel inlet 501, and the direction of the inlet 111 of the water-cooled radiator 110 of the motor controller 100 is the same as the direction of the bracket water channel inlet 501, and the inlet 111 of the water-cooled radiator 110 of the motor controller 100 is used to be embedded in the second radiator water channel interface 502b.

[0189] In an embodiment of the present application, the inlet 111 of the water-cooled radiator 110 of the motor controller 100 is used to connect to the second radiator water channel interface 502b, so that the cooling water output from the second radiator water channel interface 502b of the integrated bracket 500 can flow into the water-cooled radiator 110 of the motor controller 100 from the inlet 111 of the water-cooled radiator 110 of the motor controller 100, thereby cooling the electrical components of the motor controller 100.

[0190] In the embodiment of the present application, the orientation of the second radiator water channel interface 502b is opposite to the orientation of the bracket water channel inlet 501, and the orientation of the inlet 111 of the water-cooled radiator 110 of the motor controller 100 is the same as the orientation of the bracket water channel inlet 501, so that the orientation of the second radiator water channel interface 502b and the orientation of the inlet 111 of the water-cooled radiator 110 of the motor controller 100 are arranged relative to each other, which facilitates the cooling water of the second radiator water channel interface 502b to be input into the inlet 111 of the water-cooled radiator 110 of the motor controller 100.

[0191] In the embodiment of the present application, the inlet 111 of the water-cooled radiator 110 of the motor controller 100 is used to be embedded in the second radiator water channel interface 502b, which can facilitate the positioning and installation of the water-cooled radiator 110 of the motor controller 100 and the integrated bracket 500, and can also make the connection between the second radiator water channel interface 502b and the inlet 111 of the water-cooled radiator 110 of the motor controller 100 more sealed to avoid cooling water leakage.

[0192] In one embodiment, if Fig.10 and Fig.12 As shown, the integrated bracket 500 includes a support arm 5100, and the support arm 5100 extends from the first shielding wall 521 away from the second shielding wall 522 along the arrangement direction X of the first shielding wall 521 and the second shielding wall 522. The support arm 5100 is used to fix the bus capacitor 120 of the motor controller 100 and the water-cooling radiator 110 of the motor controller 100. The space between the support arm 5100 and the first shielding wall 521 is used to accommodate the bus capacitor 120 of the motor controller 100 and the water-cooling radiator 110 of the motor controller 100. The second radiator water channel interface 502b is located at one end of the support arm 5100 away from the first shielding wall 521, and the second radiator water channel interface 502b protrudes away from the bottom 4111 of the electrical containing groove 411 along the stacking direction Z of the electrical cover plate 420 and the electrical containing groove 411.

[0193] In an embodiment of the present application, the support arm 5100 extends from the first shielding wall 521 away from the second shielding wall 522 along the arrangement direction X of the first shielding wall 521 and the second shielding wall 522. The support arm 5100 is used to fix the bus capacitor 120 of the motor controller 100 and the water-cooling radiator 110 of the motor controller 100, so that the bus capacitor 120 of the motor controller 100 and the water-cooling radiator 110 of the motor controller 100 are fixed to the same bracket as the electrical components of the vehicle-mounted charger 200, thereby improving the structural strength of the vehicle-mounted device 20.

[0194] In the embodiment of the present application, the space between the support arm 5100 and the first shielding wall 521 is used to accommodate the bus capacitor 120 of the motor controller 100 and the water-cooling radiator 110 of the motor controller 100, so that the space between the support arm 5100 and the first shielding wall 521 can be fully utilized, and the bus capacitor 120 of the motor controller 100 will not occupy too much space of the integrated bracket 500 along the arrangement direction X of the first shielding wall 521 and the second shielding wall 522, which is conducive to the miniaturization of the vehicle-mounted device 20. In the embodiment of the present application, the space between the support arm 5100 and the first shielding wall 521 is used to enclose the avoidance hole 530.

[0195] In the embodiment of the present application, the second radiator water channel interface 502b is located at one end of the support arm 5100 away from the first shielding wall 521, which facilitates the connection between the internal flow channel 570 of the integrated bracket 500 and the water-cooled radiator 110 of the motor controller 100. The second radiator water channel interface 502b protrudes away from the bottom 4111 of the electrical containing groove 411 along the stacking direction Z of the electrical cover plate 420 and the electrical containing groove 411, so that the second radiator water channel interface 502b can not only achieve connection with the water-cooled radiator 110 of the motor controller 100, but also provide support for the water-cooled radiator 110 of the motor controller 100, and also facilitate the installation and fixation of the water-cooled radiator 110 of the motor controller 100 on the integrated bracket 500.

[0196] In one embodiment, if Fig.12 and Fig.16 As shown, the cooling groove 580 also includes a connecting flow channel groove 581c, which is located at the support arm 5100. The connecting flow channel groove 581c is connected to the second radiator water channel interface 502b. The connecting flow channel groove 581c receives cooling water from the first channel groove 581a and the second channel groove 581b. The cooling water in the connecting flow channel groove 581c can cool down the bus capacitor 120 of the motor controller 100.

[0197] In one embodiment, if Fig.10 and Fig.12 As shown, the support arm 5100 is used to separate the first shielding wall 521 into two parts 5211 and 5212 adjacent to each other along the opening direction Y of the first mounting hole 4113, the space between the support arm 5100 and a part 5211 of the two parts 5211 and 5212 of the first shielding wall 521 is used to accommodate the bus capacitor 120 of the motor controller 100, the space between the support arm 5100 and the other part 5212 of the two parts 5211 and 5212 of the first shielding wall 521 is used to accommodate the vehicle controller 300, the length of a part 5211 of the two parts 5211 and 5212 along the opening direction Y of the first mounting hole 4113 is greater than the length of the support arm 5100 along the arrangement direction X of the first shielding wall 521 and the second shielding wall 522, and the length direction of the bus capacitor 120 of the motor controller 100 and the water-cooling radiator 110 of the motor controller 100 is the same as the opening direction Y of the first mounting hole 4113.

[0198] In an embodiment of the present application, the support arm 5100 is used to separate the first shielding wall 521 into two adjacent parts 5211 and 5212 along the opening direction Y of the first mounting hole 4113, that is, the support arm 5100 will extend from the first shielding wall 521 along a position in the middle of the arrangement direction X of the first shielding wall 521 and the second shielding wall 522. Compared with extending at the edge position, the support arm 5100 can be made stronger in the integrated bracket 500, which is beneficial for the integrated bracket 500 to more stably fix the bus capacitor 120 of the motor controller 100 and the water-cooling radiator 110 of the motor controller 100.

[0199] In the embodiment of the present application, since the bus capacitor 120 of the motor controller 100 is relatively large, a larger space is required to place the bus capacitor 120 of the motor controller 100. The length of a part 5211 of the two parts 5211 and 5212 along the opening direction Y of the first mounting hole 4113 is greater than the length of the support arm 5100 along the arrangement direction X of the first shielding wall 521 and the second shielding wall 522. The length of the support arm 5100 along the arrangement direction X of the first shielding wall 521 and the second shielding wall 522 is relatively small, so that the integrated bracket 500 as a whole is relatively small along the arrangement direction X of the first shielding wall 521 and the second shielding wall 522. By setting the length of a part 5211 of the two parts 5211 and 5212 along the opening direction Y of the first mounting hole 4113 to be larger, the integrated bracket 500 can have a larger space between the support arm 5100 and the part 5211 of the two parts 5211 and 5212 of the first shielding wall 521 when the length along the arrangement direction X of the first shielding wall 521 and the second shielding wall 522 is smaller, so that the bus capacitor 120 of the motor controller 100 and the water-cooling radiator 110 of the motor controller 100 can be accommodated, and it is also convenient to install and fix the integrated bracket 500 on the bottom 4111 of the electrical receiving groove 411.

[0200] In the embodiment of the present application, the length direction of the bus capacitor 120 of the motor controller 100 and the water-cooled radiator 110 of the motor controller 100 is the same as the opening direction Y of the first mounting hole 4113, so that the length direction of the bus capacitor 120 of the motor controller 100 and the water-cooled radiator 110 of the motor controller 100 are aligned with the length direction of the longer part of the two parts 5211 and 5212 of the first shielding wall 521, so that the bus capacitor 120 of the motor controller 100 and the water-cooled radiator 110 of the motor controller 100 will not occupy too much space outside the integrated bracket 500 along the arrangement direction X of the first shielding wall 521 and the second shielding wall 522 and along the opening direction Y of the first mounting hole 4113, so that the layout of the components in the vehicle-mounted device 20 has a smaller volume.

[0201] In one embodiment, if Figure 7 and Fig.16 As shown, the integrated housing 410 further includes an internal water outlet channel 440, and an inlet 441 of the internal water outlet channel 440 is used to receive cooling water discharged from the outlet 112 of the water cooling radiator 110 of the motor controller 100. The inlet 441 of the internal water outlet channel 440 is distributed at the bottom 4111 of the electrical receiving groove 411, and the outlet 442 of the internal water outlet channel 440 is distributed outside the groove of the electrical receiving groove 411. The orientation of the inlet 441 of the internal water outlet channel 440 is the same as that of the second radiator water channel interface 502b, the orientation of the inlet 111 of the water cooling radiator 110 of the motor controller 100 is the same as that of the outlet, and the outlet 112 of the water cooling radiator 110 of the motor controller 100 is used to be embedded in the inlet 441 of the internal water outlet channel 440.

[0202] In an embodiment of the present application, the inlet 441 of the internal water outlet channel 440 is used to receive the cooling water discharged from the outlet 112 of the water-cooled radiator 110 of the motor controller 100, so that the cooling water of the vehicle cooling system can flow back to the vehicle cooling system after flowing through the vehicle-mounted device 20, thereby forming a recycling of cooling water.

[0203] In the embodiment of the present application, the inlet 441 of the internal water outlet channel 440 is distributed at the bottom 4111 of the electrical receiving groove 411, so that the inlet 441 of the internal water outlet channel 440 can be connected with the outlet 112 of the water-cooling radiator 110 of the motor controller 100 arranged in the electrical receiving groove 411, and the outlet 442 of the internal water outlet channel 440 is distributed outside the groove of the electrical receiving groove 411, so that the cooling water in the water-cooling radiator 110 of the motor controller 100 can be discharged outside the integrated shell 410, and it is also convenient for the outlet 442 of the internal water outlet channel 440 to be connected with the external cooling pipe, so that the cooling water can flow back to the cooling system of the whole vehicle.

[0204] In the embodiment of the present application, the orientation of the inlet 441 of the internal water outlet channel 440 is the same as the orientation of the second radiator water channel interface 502b, and the orientation of the inlet 111 of the water-cooled radiator 110 of the motor controller 100 is the same as the orientation of the outlet, so that the inlet 111 and outlet of the water-cooled radiator 110 of the motor controller 100 can be arranged relative to the second radiator water channel interface 502b and the inlet 441 of the internal water outlet channel 440 along the stacking direction Z of the electrical cover plate 420 and the electrical receiving groove 411, respectively, so that the cooling water can flow smoothly through the water-cooled radiator 110 of the motor controller 100. In addition, the outlet 112 of the water-cooled radiator 110 of the motor controller 100 is used to be embedded in the inlet 441 of the internal water outlet channel 440, which can facilitate the positioning and installation of the water-cooled radiator 110 of the motor controller 100 and the integrated bracket 500 and the integrated housing 410, and facilitate the assembly and replacement of the water-cooled radiator 110 of the motor controller 100.

[0205] In the embodiments of the present application, Figure 7 As shown, the internal water inlet channel 430 of the integrated shell 410 is used to transport cooling water to the integrated bracket 500. The integrated bracket 500 transports cooling water to the water-cooled radiator 210 of the on-board charger 200 and the water-cooled radiator 110 of the motor controller 100 through the first radiator water channel interface 502a and the second radiator water channel interface 502b respectively. The cooling water after cooling and heat exchange of the water-cooled radiator 210 of the on-board charger 200 and the water-cooled radiator 110 of the motor controller 100 is discharged from the on-board device 20 through the internal water outlet channel 440 of the integrated shell 410, so that the integrated bracket 500 fixes the on-board charger 200 and the motor controller 100 and integrates them into an integrated module 20a. It is also possible to cool and dissipate the electrical components of the on-board charger 200 and the motor controller 100, thereby not only improving the integration of the electrical components of the on-board charger 200 and the motor controller 100, but also improving the installation convenience of the structural components of the on-board device 20, and also improving the cooling and heat dissipation effect of the on-board device 20.

[0206] Fig.17 is a schematic diagram of an integrated housing 410 provided in another embodiment of the present application. Fig.18 It is another schematic diagram of an integrated housing 410 provided in another embodiment of the present application.

[0207] In one embodiment, if Figure 3 , Figure 4 and Fig.17 As shown, the vehicle-mounted device 20 further includes a driving motor 22 and a reducer 23, the housing 400 of the vehicle-mounted device 20 further includes a motor end cover 450 and a reducer end cover 460, the integrated housing 410 further includes a motor receiving groove 412 and a reducer receiving groove 413, the motor receiving groove 412 is used to fix and receive the stator of the driving motor 22, the motor end cover 450 is used to enclose the motor receiving groove 412, the reducer receiving groove 413 is used to receive the gear set of the reducer 23, and the reducer end cover 460 is used to enclose the reducer receiving groove 413. Fig.17 As shown, the motor receiving slot 412 and the reducer receiving slot 413 are arranged adjacent to each other along the axial direction Y of the drive motor 22, the notch orientation of the motor receiving slot 412 is opposite to the notch orientation of the reducer receiving slot 413, and the orientation of the notch 4112 of the electrical receiving slot 411 is perpendicular to the notch orientation of the motor receiving slot 412 and the notch orientation of the reducer receiving slot 413. Fig.17As shown, the groove wall of the electrical receiving groove 411 includes a first groove wall 4116, a second groove wall 4117, a third groove wall 4118 and a fourth groove wall 4119, the first groove wall 4116 and the second groove wall 4117 are arranged relatively to each other along the axial direction Y of the drive motor 22, the third groove wall 4118 and the fourth groove wall 4119 are arranged relatively to each other along the axial direction Y perpendicular to the drive motor 22, the distance between the first groove wall 4116 and the groove opening of the motor receiving groove 412 is greater than the distance between the second groove wall 4117 and the groove opening of the motor receiving groove 412, and the distance between the third groove wall 4118 and the motor shaft of the drive motor 22 is less than the distance between the fourth groove wall 4119 and the motor shaft of the drive motor 22, as shown in FIG. Figure 5 and Fig.17 As shown, the power battery interface 204 of the vehicle-mounted device 20 and the load power supply interface of the vehicle-mounted device 20 are distributed on the first slot wall 4116, as shown in FIG. Fig.18 As shown, the three-phase copper discharge line holes 4120 of the vehicle-mounted device 20 are distributed on the second slot wall 4117, as shown in FIG. Figure 7 As shown, the inlet 431 of the internal water inlet channel 430 is distributed on the third groove wall 4118 , and the outlet 442 of the internal water outlet channel 440 is distributed on the outer side of the fourth groove wall 4119 .

[0208] In the embodiments of the present application, Figure 6 and Fig.18 As shown, the third groove wall 4118 and the fourth groove wall 4119 are arranged relative to each other along the axial direction Y perpendicular to the drive motor 22, the inlet 431 of the internal water inlet channel 430 is distributed on the third groove wall 4118, and the outlet 442 of the internal water outlet channel 440 is distributed on the outer side of the fourth groove wall 4119, so that the cooling water flowing from the inlet 431 of the internal water inlet channel 430 into the internal flow channel 570 of the integrated bracket 500, the water-cooling radiator 210 of the on-board charger 200, and the water-cooling radiator 110 of the motor controller 100, and finally flowing out from the outlet 442 of the internal water outlet channel 440 has a longer flow path, which is beneficial for the internal flow channel 570 of the integrated bracket 500, the water-cooling radiator 210 of the on-board charger 200, and the water-cooling radiator 110 of the motor controller 100 to dissipate heat for the electrical components of the on-board charger 200 and the electrical components of the motor controller 100, and is beneficial for improving the cooling efficiency of the on-board device 20.

[0209] In the embodiment of the present application, the electrical components of the on-board charger 200 in the on-board device 20 are stacked on the drive motor 22, and the inlet 431 of the internal water inlet channel 430 is distributed on the outer side of the third groove wall 4118, so that the cooling water enters the integrated bracket 500 from the inlet 431 of the internal water inlet channel 430 and quickly flows into the water-cooled radiator 210 of the on-board charger 200 and the third internal flow channel 573 at the bottom of the integrated bracket 500 to achieve heat dissipation of the on-board charger 200, and the third internal flow channel 573 at the bottom of the integrated bracket 500 is also stacked on the drive motor 22, and can also cool the drive motor 22, thereby improving the cooling and heat dissipation effect of the on-board device 20.

[0210] In the embodiment of the present application, the outlet 442 of the internal water outlet channel 440 is arranged on the fourth groove wall 4119 close to the reducer 23, and the electrical components of the motor controller 100 in the vehicle-mounted device 20 are stacked in the gap between the drive motor 22 and the reducer 23. Since the bus capacitor 120 of the motor controller 100 is relatively high, the gap between the drive motor 22 and the reducer 23 can be fully utilized by stacking the electrical components of the motor controller 100 in the gap between the drive motor 22 and the reducer 23. The outlet 442 of the internal water outlet channel 440 connected to the water-cooled radiator 110 of the motor controller 100 can be connected to an external pipeline from the gap between the drive motor 22 and the reducer 23, making full use of the gap between the drive motor 22 and the reducer 23, making the structure of the vehicle-mounted device 20 compact, and facilitating the miniaturization of the vehicle-mounted device 20.

[0211] In the embodiments of the present application, Figure 6 As shown, the first groove wall 4116 and the second groove wall 4117 are arranged oppositely along the axial direction Y of the drive motor 22, and the power battery interface 204 of the vehicle-mounted device 20 and the load power supply interface of the vehicle-mounted device 20 are distributed on the first groove wall 4116, wherein the load power supply interface is the second connector 202, and the load power supply interface is used to connect the compressor. Fig.18 As shown, the three-phase copper busbars 4120 of the vehicle-mounted device 20 are distributed on the second slot wall 4117, so that the current input from the power battery 10 into the vehicle-mounted charger 200 can be more smoothly output from the three-phase output copper busbars 130 passing through the three-phase copper busbars 4120 to the stator winding of the drive motor 22, thereby driving the drive motor 22. The power battery interface 204 of the vehicle-mounted device 20 and the load power supply interface of the vehicle-mounted device 20 are both distributed on the first slot wall 4116, which facilitates the vehicle-mounted charger 200 to energize the load of the vehicle-mounted device 20 more quickly through the load power supply interface.

[0212] In the embodiment of the present application, the power battery interface 204 of the vehicle-mounted device 20 and the load power supply interface of the vehicle-mounted device 20 are distributed on the first groove wall 4116, the three-phase copper discharge line hole 4120 of the vehicle-mounted device 20 is distributed on the second groove wall 4117, the inlet 431 of the internal water inlet channel 430 is distributed on the third groove wall 4118, and the outlet 442 of the internal water outlet channel 440 is distributed on the outside of the fourth groove wall 4119, so that the opening of the electrical accommodation groove 411 is more reasonable and regular.

[0213] In one embodiment, if Figure 5 , Figure 6 , Fig.17 and Fig.18 As shown, the first mounting hole 4113 and the second mounting hole 4114 are located in the first slot wall 4116, the first connector 201 installed in the first mounting hole 4113 passes through the first slot wall 4116, and the second connector 202 installed in the second mounting hole 4114 passes through the first slot wall 4116. The third mounting hole 4115 is located in the second slot wall 4117, and the third connector 203 installed in the third mounting hole 4115 passes through the second slot wall 4117. The first connector 201 is plugged into the power battery interface 204, the second connector 202 is plugged into the load power supply interface of the vehicle-mounted device 20, and the third connector 203 is plugged into the interface of the 12V low-voltage load.

[0214] In one embodiment, if Fig.17 As shown, the communication connector mounting hole 4121 of the vehicle controller 300 passes through the bottom 4111 of the electrical receiving slot 411, so that the communication connector connected to the vehicle controller 300 does not occupy the space of the electrical receiving slot 411 along the axial Y direction of the drive motor 22 and the opening direction of the first mounting hole 4113, which is conducive to the miniaturization of the vehicle-mounted device 20. The cable of the communication connector can also pass through the bottom 4111 of the electrical receiving slot 411, making the wiring of the vehicle-mounted device 20 more beautiful.

[0215] The vehicle-mounted device and the electric vehicle provided in the embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and embodiments of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific embodiments and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A vehicle-mounted device, characterized in that: The vehicle-mounted device includes at least one of a vehicle-mounted charger or a motor controller, the housing of the vehicle-mounted device includes an integrated housing and an electrical cover, the integrated housing includes an electrical receiving slot, and the electrical cover is used to enclose the electrical receiving slot, wherein: The electrical receiving groove is used to accommodate an integrated bracket and a first circuit board. The bottom of the electrical receiving groove is used to fix the integrated bracket. The first circuit board is used to carry electrical components of at least one of the on-board charger or the motor controller. The integrated bracket is used to fix and cool the electrical components of at least one of the on-board charger or the motor controller. The integrated bracket is arranged between the first circuit board and the bottom of the electrical receiving groove.

2. The vehicle-mounted device according to claim 1, characterized in that: The integrated bracket also includes a plurality of first support members, which are distributed on one side of the integrated bracket facing the slot of the receiving slot, and the plurality of first support members are used to fix and support the first circuit board, and the side of the first circuit board facing the receiving slot is used to fix the electrical components of at least one of the on-board charger or the motor controller.

3. The vehicle-mounted device according to claim 2, characterized in that: The electrical receiving slot is also used to accommodate a second circuit board, and the second circuit board is used to carry at least one electrical component of the vehicle charger. The integrated bracket also includes a plurality of second support members, and the plurality of second support members are distributed on one side of the notch of the integrated bracket facing the electrical receiving slot. The plurality of second support members are used to fix and support the second circuit board, and the second circuit board is arranged between the first circuit board and the integrated bracket.

4. The power supply device according to any one of claims 1 to 3, characterized in that: The integrated bracket also includes at least one shielding wall, which is distributed on one side of the slot of the integrated bracket facing the electrical receiving slot, and the at least one shielding wall includes a first shielding wall, which is used to isolate the electrical components of the on-board charger and the electrical components of the motor controller.

5. The vehicle-mounted device according to claim 4, characterized in that: The integrated bracket also includes a avoidance hole, which passes through the integrated bracket along the stacking direction of the electrical cover plate and the electrical accommodation groove. The avoidance hole is used to accommodate the bus capacitor of the motor controller. The avoidance hole is located on the side of the first shielding wall away from the electrical components of the vehicle charger.

6. The vehicle-mounted device according to claim 4, characterized in that: The at least one shielding wall also includes a second shielding wall, which is arranged on a side of the first shielding wall away from the electrical components of the motor controller, and the space between the second shielding wall and the first shielding wall is used to accommodate the electrical components of the on-board charger.

7. The vehicle-mounted device according to claim 4, characterized in that: The at least one shielding wall further includes a third shielding wall. Along the arrangement direction of the first shielding wall and the second shielding wall, the second shielding wall, the third shielding wall and the first shielding wall are arranged in sequence. The space between the second shielding wall and the third shielding wall is used to accommodate an AC filter component. The second shielding wall and the third shielding wall form a first opening at one end of the slot wall close to the electrical receiving slot. The first opening is used to accommodate a first interface. The on-board charger is used to receive AC power provided by an external power source through the first interface. The electrical accommodation slot includes a first mounting hole, the first mounting hole is aligned with the first opening, the first mounting hole is used to install a first connector, and the first connector is used to electrically connect the first interface and the external power supply.

8. The vehicle-mounted device according to claim 7, characterized in that: The at least one shielding wall further includes a fourth shielding wall. Along the arrangement direction of the first shielding wall and the second shielding wall, the third shielding wall, the fourth shielding wall and the first shielding wall are arranged in sequence. One end of the third shielding wall and the fourth shielding wall close to the slot wall of the electrical receiving slot forms a second opening, the second opening is used to accommodate a second interface, the on-board charger is used to supply power to the compressor through the second interface, and the second opening is on the same side as the first opening; The electrical accommodation slot also includes a second mounting hole, which is aligned with the second opening. The second mounting hole is used to install a second connecting member, and the second connecting member is used to electrically connect the second interface and the compressor. The second mounting hole is on the same side as the first mounting hole.

9. The vehicle-mounted device according to claim 7, characterized in that: The integrated bracket further includes a low-voltage installation groove, the notch of the low-voltage installation groove faces the electrical cover plate, the low-voltage installation groove is used to accommodate a third interface, the on-board charger is used to supply power to the on-board load through the third interface, and the low-voltage installation groove is opposite to the first opening along the opening direction of the first installation hole; The electrical accommodation slot also includes a third mounting hole, which is aligned with the low-voltage mounting groove. The third mounting hole is used to install a third connector, and the third connector is used to electrically connect the third interface and the vehicle-mounted load.

10. The vehicle-mounted device according to any one of claims 1 to 9, characterized in that: The integrated shell includes an internal water inlet channel, the inlet of the internal water inlet channel is distributed outside the electrical containing slot, and the outlet of the internal water inlet channel is distributed inside the electrical containing slot. The integrated bracket includes a bracket water channel inlet and at least one radiator water channel interface. The bracket water channel inlet is used to receive cooling water output from the outlet of the internal water inlet channel, and each of the radiator water channel interfaces is used to transport coolant to at least one of the water-cooled radiator of the vehicle charger or the water-cooled radiator of the motor controller.

11. The vehicle-mounted device according to claim 10, characterized in that: The outlet of the internal water inlet channel is distributed at the bottom of the electrical receiving slot, and the inlet of the internal water channel of the bracket is used to connect with the outlet of the internal water inlet channel, wherein: The outlet of the internal water inlet channel is oriented in the same direction as the notch of the electrical receiving slot, and the inlet of the internal water channel of the bracket is oriented opposite to the notch of the electrical receiving slot.

12. The vehicle-mounted device according to claim 10, characterized in that: The at least one radiator water channel interface includes a first radiator water channel interface, and the first radiator water channel interface is used to connect to the water-cooled radiator of the on-board charger, wherein: The first radiator water channel interface is distributed on a side of the integrated bracket facing the electrical cover plate, the bracket water channel inlet is distributed on a side of the integrated bracket away from the cover plate, and the direction of the first radiator water channel interface is opposite to that of the bracket water channel inlet.

13. The vehicle-mounted device according to claim 10, characterized in that: The at least one radiator water channel interface further includes a second radiator water channel interface, and the second radiator water channel interface is used to connect to the water cooling radiator of the motor controller, wherein: The second radiator water channel interface is used to receive coolant from at least one of the water-cooled radiator of the on-board charger or the bracket water channel inlet through the internal flow channel of the integrated bracket.

14. The vehicle-mounted device according to claim 10, characterized in that: The vehicle-mounted device further includes a driving motor and a reducer, the housing of the vehicle-mounted device further includes a motor end cover and a reducer end cover, the integrated housing further includes a motor receiving slot and a reducer receiving slot, the motor receiving slot is used to fix and receive the stator of the driving motor, the motor end cover is used to enclose the motor receiving slot, the reducer receiving slot is used to receive the gear set of the reducer, and the reducer end cover is used to enclose the reducer receiving slot, wherein: The motor receiving slot and the reducer receiving slot are arranged adjacent to each other along the axial direction of the drive motor, the notch orientation of the motor receiving slot is opposite to the notch orientation of the reducer receiving slot, and the notch orientation of the electrical receiving slot is perpendicular to the notch orientation of the motor receiving slot and the notch orientation of the reducer receiving slot; The groove wall of the electrical containing groove includes a first groove wall, a second groove wall, a third groove wall and a fourth groove wall, the first groove wall and the second groove wall are arranged relative to each other along the axial direction of the drive motor, the third groove wall and the fourth groove wall are arranged relative to each other in a direction perpendicular to the axial direction of the drive motor, the distance between the first groove wall and the groove opening of the motor containing groove is greater than the distance between the second groove wall and the groove opening of the motor containing groove, the distance between the third groove wall and the motor shaft of the drive motor is smaller than the distance between the fourth groove wall and the motor shaft of the drive motor, the entrance of the internal water inlet channel is distributed on the third groove wall, the power battery interface of the vehicle-mounted device and the load power supply interface of the vehicle-mounted device are distributed on the first groove wall, the three-phase copper discharge line holes of the vehicle-mounted device are distributed on the second groove wall, and the outlet of the internal water outlet channel is distributed on the outside of the fourth groove wall.

15. An electric vehicle, characterized in that: The electric vehicle includes a power battery and a vehicle-mounted device as described in any one of claims 1 to 14, wherein the vehicle-mounted device is used to receive power from the power battery to drive at least one of the wheels or loads of the vehicle, or the vehicle-mounted device is used to receive power from an external power source to charge the power battery.

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