Water-cooling heat dissipation vehicle-mounted device and electric vehicle

Abstract

The invention provides a water-cooling heat dissipation vehicle-mounted device and an electric vehicle. A shell of the vehicle-mounted device comprises an integrated shell, and the integrated shell comprises an electrical containing groove and an internal water inlet channel. Wherein the electrical containing groove is used for containing the integrated support and the first circuit board, 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 arranged between the first circuit board and the groove bottom of the electrical containing groove. The integrated support comprises a support water channel inlet and at least one radiator water channel connector, the support water channel inlet is used for receiving cooling water output by the outlet of the internal water inlet channel, and each radiator water channel connector is used for conveying cooling liquid to at least one of a water cooling radiator of the vehicle-mounted charger or a water cooling radiator of the motor controller. The water cooling radiator of the vehicle-mounted charger and the water cooling radiator of the motor controller are communicated with the internal water inlet channel of the integrated shell through the integrated support, so that the vehicle-mounted device is small in size under the condition that the cooling efficiency of the vehicle-mounted device is improved.

Description

Technical Field

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

[0002] Existing electric vehicles usually use powertrains as their power source. At present, the powertrain includes multiple components such as motors, reducers, and power supply devices. In order to achieve the diversification of powertrain functions, more and more functional modules will be integrated into the power supply device. The functional modules will generate heat during operation, and a radiator needs to be added to cool the functional modules, which is not conducive to the miniaturization of the power supply device and will also make the housing structure of the power supply device complex and the installation complicated. Summary of the invention

[0003] The present application provides a water-cooled vehicle-mounted device and an electric vehicle. The water-cooled radiator of the vehicle-mounted charger and the water-cooled radiator of the motor controller are connected through the internal flow channel of the integrated bracket, so that the cooling efficiency of the vehicle-mounted device is improved while having a smaller volume.

[0004] In the first aspect, the present application provides a water-cooled on-board device, the on-board device includes at least one of an on-board charger or a motor controller, the housing of the on-board device includes an integrated housing and an electrical cover, the integrated housing includes an electrical receiving slot and an internal water inlet channel, the electrical cover is used to enclose the electrical receiving slot, the inlet of the internal water inlet channel is distributed outside the slot of the electrical receiving slot, and the outlet of the internal water inlet channel is distributed inside the slot of the electrical receiving slot. Among them, the electrical receiving slot is used to accommodate an integrated bracket and a first circuit board, the first circuit board is used to carry at least one electrical component of the on-board charger or the motor controller, and the integrated bracket is arranged between the first circuit board and the bottom of 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 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.

[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 the motor controller, and the integrated bracket is arranged between the first circuit board and the bottom of the electrical receiving groove, so that the integrated bracket can support at least one electrical component of the on-board charger or the motor controller, so that when the on-board device is assembled, at least one electrical component of the on-board charger or the motor controller can be installed and fixed in the electrical receiving groove after the integrated bracket is assembled, which is convenient for the assembly process, reduces the difficulty of assembly, and can also improve the integration and integration of the on-board device, which is conducive to the miniaturization of the on-board device. When the bottom of the electrical receiving groove is not a flat installation surface, the integrated bracket is arranged between the first circuit board and the bottom of the electrical receiving groove, and the use of the integrated bracket to install and fix at least one electrical component of the on-board charger or the motor controller also makes it unnecessary for the on-board charger or the motor controller to be directly fixed on the bottom of the electrical receiving groove, which is convenient for the installation and arrangement of the on-board charger or the motor controller, which is conducive to making the arrangement of the on-board charger or the motor controller more regular, and can also improve the stability of the electrical connection of the on-board device.

[0006] 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.

[0007] 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.

[0008] 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 water channel is more integrated with the structure of the on-board device. 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 for making the on-board device have a smaller volume while improving the cooling efficiency of the on-board device.

[0009] In one embodiment, the outlet of the internal water inlet channel is distributed at the bottom of the electrical receiving slot, and the bracket water channel inlet 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 bracket water channel is oriented in the opposite direction to the slot opening of the electrical receiving slot.

[0010] 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.

[0011] 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.

[0012] In one embodiment, the outlet of the internal water inlet channel protrudes from the bottom of the electrical receiving slot, and the bracket water channel inlet is used to be embedded in the outlet of the internal water inlet channel.

[0013] In an embodiment of the present application, the outlet of the internal water inlet channel protrudes from the bottom of the electrical receiving slot, which facilitates the embedding of the bracket water channel inlet of the integrated bracket into the outlet of the internal water inlet channel. The outlet of the internal water inlet channel can also provide support for the integrated bracket, making the integrated bracket more securely fixed to the bottom of the electrical receiving slot. The bracket water channel inlet is used to be embedded in the outlet of the internal water inlet channel, which facilitates the positioning and installation of the integrated bracket and the electrical receiving slot. It can also make the connection between the outlet of the internal water inlet channel and the bracket water channel inlet more sealed to avoid cooling water leakage. The bracket water channel inlet is directly embedded in the outlet of the internal water inlet channel, without the need for additional connecting pipes, so that the integration of components in the vehicle-mounted device is higher, and it can also save space in the vehicle-mounted device, which is conducive to the miniaturization of the vehicle-mounted device.

[0014] 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, and the bracket water channel inlet is distributed on the side of the integrated bracket away from the electrical cover plate, and the direction of the first radiator water channel interface is opposite to the direction of the bracket water channel inlet.

[0015] 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.

[0016] 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.

[0017] 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.

[0018] In one embodiment, the integrated bracket includes a support column, which protrudes from a side of the integrated bracket facing the electrical cover plate, and the end surface of the support column facing the electrical cover plate includes a groove, which is used to fix the water-cooled radiator of the vehicle charger, and the first circuit board is arranged between the water-cooled radiator of the vehicle charger and the integrated bracket.

[0019] In an embodiment of the present application, the support column protrudes from the side of the integrated bracket facing the electrical cover, so that the support column can support the water-cooled radiator, so that the gravity of the water-cooled radiator will not directly act on the first circuit board, and thus will not affect the normal operation of the first circuit board.

[0020] In the embodiment of the present application, the end surface of the support column facing the electrical cover plate includes a groove, which is used to fix the water-cooling radiator of the on-board charger, so that the water-cooling radiator of the on-board charger can be directly positioned through the groove of the support column during assembly, simplifying the assembly process. It can also make the layout of the components of the on-board device more compact and more integrated, which is conducive to the miniaturization of the on-board device.

[0021] In the embodiment of the present application, the first circuit board is arranged between the water-cooled radiator of the on-board charger and the integrated bracket, so that the electrical components of the on-board charger can be arranged between the water-cooled radiator of the on-board charger and the internal flow channel of the integrated bracket, so that the cooling water in the water-cooled radiator of the on-board charger and the internal flow channel of the integrated bracket can cool down the electrical components of the on-board charger at the same time, thereby improving the cooling efficiency of the on-board charger, and further improving the cooling efficiency of the on-board device.

[0022] In one embodiment, the first radiator water channel interface is distributed at the bottom of the groove, and the inlet and outlet of the water-cooled radiator of the on-board charger are used to be embedded in the groove. The first radiator water channel interface includes a radiator water inlet interface and a radiator water outlet interface. The radiator water inlet interface is used to connect to the inlet of the water-cooled radiator of the on-board charger, and the radiator water outlet interface is used to connect to the outlet of the water-cooled radiator of the on-board charger.

[0023] In the embodiment of the present application, the first radiator water channel interface is distributed at the bottom of the groove, the inlet and outlet of the water-cooled radiator of the on-board charger are used to be embedded in the groove, and the radiator water inlet interface is used to connect to the inlet of the water-cooled radiator of the on-board charger, so that the cooling water output from the radiator water inlet interface of the first radiator water channel interface can be input into the inlet of the water-cooled radiator of the on-board charger in the shortest path. The radiator water outlet interface is used to connect to the outlet of the water-cooled radiator of the on-board charger, so that the cooling water flowing out of the water-cooled radiator of the on-board charger can also flow back from the outlet of the water-cooled radiator of the on-board charger to the first radiator water channel interface and then connect with the bracket water channel. The cooling water flowing in the water-cooled radiator of the on-board charger can dissipate heat for the electrical components of the on-board charger, thereby ensuring the normal operation of the on-board device.

[0024] In one embodiment, the integrated bracket includes a first internal flow channel and a second internal flow channel, the first internal flow channel is used to connect the bracket water channel inlet and the radiator water inlet interface, the second internal flow channel is used to connect the radiator water outlet interface and the water cooling radiator inlet of the motor controller, the first internal flow channel and the second internal flow channel are distributed inside the support column, and the first internal flow channel and the second internal flow channel penetrate the support column along the stacking direction of the electrical cover plate and the electrical containing groove.

[0025] In the embodiment of the present application, the first internal flow channel is used to connect the bracket water channel inlet and the radiator water inlet interface, so that the cooling water flowing into the integrated bracket from the bracket water channel inlet can flow through the first internal flow channel, the radiator water inlet interface, and the inlet of the water-cooled radiator of the on-board charger in sequence and flow into the water-cooled radiator of the on-board charger to cool down the electrical components of the on-board charger. The second internal flow channel is used to connect the radiator water outlet interface and the inlet of the water-cooled radiator of the motor controller, so that the cooling water flowing through the water-cooled radiator of the on-board charger can flow from the outlet of the water-cooled radiator of the on-board charger, the radiator water outlet interface, and the second internal flow channel into the inlet of the water-cooled radiator of the motor controller, so that the water-cooled radiator of the motor controller can cool down the electrical components of the motor controller, and also realize the series connection of the water-cooled radiator of the on-board charger and the water-cooled radiator of the motor controller, so that the integration of the on-board device is higher.

[0026] In the embodiment of the present application, the first internal flow channel and the second internal flow channel are distributed inside the support column, so that the first internal flow channel and the second internal flow channel can be directly formed with the help of the support column, and the first internal flow channel and the second internal flow channel can also cool down the electrical components of the on-board charger fixed by the integrated bracket. The first internal flow channel and the second internal flow channel penetrate the support column along the stacking direction of the electrical cover plate and the electrical receiving groove, which is convenient for processing the first internal flow channel and the second internal flow channel on the support column, and can also make the flow channel length of the first internal flow channel and the second internal flow channel shorter, which is conducive to the cooling water of the internal water inlet channel of the integrated shell can quickly enter the water-cooled radiator of the on-board charger from the first internal flow channel to cool down the electrical components of the on-board charger, and it is also conducive to quickly transporting the cooling water in the water-cooled radiator of the on-board charger from the second internal flow channel to the water-cooled radiator of the motor controller, thereby accelerating the cooling efficiency. Directly using the support column to form the first internal flow channel and the second internal flow channel can also make the arrangement of the cooling water pipeline in the on-board device conducive to saving space and making the overall volume of the on-board device smaller.

[0027] In one embodiment, the integrated bracket also includes a cooling groove and a cooling cover plate. The cooling groove is distributed on the side of the integrated bracket away from the electrical cover plate. The cooling cover plate is used to enclose the cooling groove to form a third internal flow channel. The bracket water channel inlet is distributed on the cooling cover plate. The bottom of the cooling groove includes a first connecting hole and a second connecting hole. The first connecting hole and the second connecting hole respectively penetrate the bottom of the cooling groove. The first connecting hole is used to connect to the radiator water inlet interface through the first internal flow channel, and the second connecting hole is used to connect to the radiator water outlet interface through the second internal flow channel. The first connecting hole and the second connecting hole are also used to connect to the inlet of the water-cooled radiator of the motor controller through the third internal flow channel.

[0028] In the embodiment of the present application, the cooling grooves are distributed on a side of the integrated bracket away from the electrical cover plate, so that the distribution of the cooling grooves will not interfere with the arrangement of the electrical components of the on-board charger and the electrical components of the motor controller.

[0029] In the embodiment of the present application, the bracket water channel inlet is distributed on the cooling cover plate, and the first connecting hole is used to connect the radiator water inlet interface through the first internal flow channel, so that the cooling water flowing into the integrated bracket from the bracket water channel inlet can flow into the water-cooled radiator of the on-board charger from the first connecting hole, the first internal flow channel, the radiator water inlet interface, and the inlet of the water-cooled radiator of the on-board charger. The second connecting hole is used to connect the radiator water outlet interface through the second internal flow channel, so that the cooling water flowing out of the outlet of the water-cooled radiator of the on-board charger can flow out from the radiator water outlet interface and the second internal flow channel to the second connecting hole. The first connecting hole and the second connecting hole are also used to connect to the inlet of the water-cooling radiator of the motor controller through the third internal flow channel, so that the cooling water flowing out of the water-cooling radiator of the vehicle-mounted charger and flowing to the second connecting hole can flow to the inlet of the water-cooling radiator of the motor controller through the third internal flow channel. That is, the water-cooling radiator of the vehicle-mounted charger and the water-cooling radiator of the motor controller can be connected in series through the cooperation of the first connecting hole, the second connecting hole and the third internal flow channel, so that the flow channel of the cooling water in the vehicle-mounted device is more integrated and fused, which is conducive to the miniaturization of the vehicle-mounted device.

[0030] In the embodiment of the present application, the third internal flow channel is located at the bottom of the integrated bracket, and the third internal flow channel is used to cool multiple capacitors, multiple inductors, and multiple transformers of the on-board charger.

[0031] In one embodiment, the bottom of the cooling groove also includes a first dividing protrusion and a second dividing protrusion, the first dividing protrusion is used to separate the first connecting hole and the second connecting hole, the second dividing protrusion is distributed on the side of the first dividing protrusion facing the first connecting hole, the height of the second dividing protrusion is less than the height of the first dividing protrusion, and the projection of the bracket water channel inlet along the stacking direction of the cover plate and the electrical containing groove is located on the side of the second dividing protrusion facing the first connecting hole.

[0032] In the embodiment of the present application, the first connecting hole is connected to the first internal flow channel, the second connecting hole is connected to the second internal flow channel, and the first dividing protrusion is used to separate the first connecting hole and the second connecting hole, so that the first internal flow channel and the second internal flow channel do not flow in parallel, so that the cooling water can flow from the first internal flow channel into the water-cooled radiator of the on-board charger. The second dividing protrusion is distributed on the side of the first dividing protrusion facing the first connecting hole, and the height of the second dividing protrusion is less than the height of the first dividing protrusion, so that a part of the cooling water flowing into the integrated bracket from the bracket water channel inlet can flow from the first connecting hole into the first internal flow channel, and then flow into the water-cooled radiator of the on-board charger, cool the electrical components of the on-board charger, and then flow out from the water-cooled radiator of the on-board charger, flow through the second internal flow channel and the third internal flow channel, and then flow into the water-cooled radiator of the motor controller to cool the electrical components of the motor controller. It also allows another portion of cooling water that flows into the integrated bracket from the bracket water channel inlet to flow directly into the water-cooled radiator of the motor controller through the third internal flow channel, thereby cooling the electrical components of the motor controller, thereby realizing the diversion and parallel flow of cooling water output from the internal water inlet channel to the bracket water channel inlet, thereby improving the cooling efficiency of the vehicle-mounted device.

[0033] In an embodiment of the present application, the projection of the bracket water channel inlet along the stacking direction of the electrical cover plate and the electrical containing groove is located on the side of the second dividing protrusion facing the first connecting hole, so that the cooling water flowing into the integrated bracket from the bracket water channel inlet will not directly flow away from the third internal flow channel, that is, the water-cooled radiator of the on-board charger will not be without cooling water flowing through, thereby ensuring that the water-cooled radiator of the on-board charger can also cool the electrical components of the on-board charger.

[0034] In one embodiment, the second dividing protrusion has a throttling effect, so that the amount of cooling water flowing from the bracket water channel inlet into the first connecting hole of the integrated bracket and further flowing into the first internal flow channel is greater than the amount of cooling water flowing directly from the bracket water channel inlet into the third internal flow channel, thereby improving the overall cooling efficiency of the vehicle-mounted device.

[0035] In one embodiment, the bottom of the cooling groove further includes a plurality of heat dissipation teeth and a plurality of flow guide teeth, wherein the plurality of heat dissipation teeth are distributed on both sides of the first partition protrusion, and the plurality of flow guide teeth are distributed on both sides of the first partition protrusion, and at least one of the flow guide teeth or heat dissipation teeth on both sides of the first partition protrusion is different in number, shape or arrangement.

[0036] In an embodiment of the present application, the bottom of the cooling groove also includes a plurality of heat dissipation teeth and a plurality of guide teeth. The heat dissipation teeth and the guide teeth have a guiding and stirring effect on the cooling water. The plurality of heat dissipation teeth are distributed on both sides of the first partition protrusion, and the plurality of guide teeth are distributed on both sides of the first partition protrusion, so that the cooling water directly flowing into the third internal flow channel from the water channel inlet of the bracket and the cooling water flowing out from the water-cooled radiator of the on-board charger to the second connecting hole and flowing into the third internal flow channel can have more heat dissipation area with the bottom of the cooling groove, which is beneficial to improving the cooling efficiency of the electrical components of the on-board charger in the integrated bracket.

[0037] In an embodiment of the present application, at least one of the number, shape or arrangement of the guide teeth or the heat dissipation teeth on both sides of the first dividing protrusion is different, which can enhance the flow guiding and stirring effect of the heat dissipation teeth and the guide teeth, so that the cooling water stays in the third internal flow channel longer, which is more conducive to cooling the electrical components of the vehicle charger.

[0038] In one embodiment, the bottom of the cooling groove can be divided into a first channel groove and a second channel groove by a first dividing protrusion. The first dividing protrusion also divides the third internal flow channel into two third internal sub-flow channels. The first channel groove is used to form a third internal sub-flow channel, and the second channel groove is used for another third internal sub-flow channel. One third internal sub-flow channel is used to receive cooling water from the water channel inlet of the bracket directly delivered to the water-cooled radiator of the motor controller, and the other third internal sub-flow channel is used to receive cooling water output from the second connecting hole and flowing through the water-cooled radiator of the on-board charger, so that the third internal flow channels can achieve parallel flow, which is more conducive to cooling the electrical components of the on-board charger.

[0039] 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 cooling water from at least one of the water cooling radiator of the on-board charger or the bracket water channel inlet through the internal flow channel of the integrated bracket.

[0040] 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.

[0041] In one embodiment, the inlet of the water-cooled radiator of the motor controller is used to connect to the second radiator water channel interface. The direction of the second radiator water channel interface is opposite to the direction of the bracket water channel inlet, the direction of the inlet of the water-cooled radiator of the motor controller is the same as the direction of the bracket water channel inlet, and the inlet of the water-cooled radiator of the motor controller is used to be embedded in the second radiator water channel interface.

[0042] In an embodiment of the present application, the inlet of the water-cooled radiator of the motor controller is used to connect to the second radiator water channel interface, so that the cooling water output from the second radiator water channel interface of the integrated bracket can flow into the water-cooled radiator of the motor controller from the inlet of the water-cooled radiator of the motor controller, thereby cooling the electrical components of the motor controller.

[0043] In an embodiment of the present application, the orientation of the second radiator water channel interface is opposite to the orientation of the bracket water channel inlet, and the orientation of the inlet of the water-cooled radiator of the motor controller is the same as the orientation of the bracket water channel inlet, so that the orientation of the second radiator water channel interface and the orientation of the inlet of the water-cooled radiator of the motor controller are arranged relative to each other, thereby facilitating the input of cooling water from the second radiator water channel interface to the inlet of the water-cooled radiator of the motor controller.

[0044] In the embodiment of the present application, the inlet of the water-cooled radiator of the motor controller is used to be embedded in the second radiator water channel interface, which can facilitate the positioning and installation of the water-cooled radiator of the motor controller and the integrated bracket, and can also make the connection between the second radiator water channel interface and the inlet of the water-cooled radiator of the motor controller more sealed to avoid cooling water leakage. The inlet of the water-cooled radiator of the motor controller is directly embedded in the second radiator water channel interface, without the need for additional connecting pipes, so that the integration of components in the vehicle-mounted device is higher, and the space of the vehicle-mounted device can also be saved, which is conducive to the miniaturization of the vehicle-mounted device.

[0045] In one embodiment, the cooling groove also includes a connecting flow channel groove, which is located on the support arm, and is connected to the second radiator water channel interface. The connecting flow channel groove receives cooling water from the first channel groove and the second channel groove. The cooling water in the connecting flow channel groove can cool the bus capacitor of the motor controller.

[0046] In one embodiment, the integrated housing further comprises an internal water outlet channel, the inlet of the internal water outlet channel being used to receive cooling water discharged from the outlet of the water cooling radiator of the motor controller. The inlet of the internal water outlet channel is distributed at the bottom of the electrical receiving slot, and the outlet of the internal water outlet channel is distributed outside the electrical receiving slot. The orientation of the inlet of the internal water outlet channel is the same as the orientation of the second radiator water channel interface, the orientation of the inlet of the water cooling radiator of the motor controller is the same as the orientation of the outlet, and the outlet of the water cooling radiator of the motor controller is used to be embedded in the inlet of the internal water outlet channel.

[0047] In an embodiment of the present application, the inlet of the internal water outlet channel is used to receive the cooling water discharged from the outlet of the water-cooled radiator of the motor controller, 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, thereby forming a recycling of cooling water.

[0048] In an embodiment of the present application, the inlet of the internal water outlet channel is distributed at the bottom of the electrical receiving groove, so that the inlet of the internal water outlet channel can be connected with the outlet of the water-cooling radiator of the motor controller arranged in the electrical receiving groove, and the outlet of the internal water outlet channel is distributed outside the electrical receiving groove, so that the cooling water in the water-cooling radiator of the motor controller can be discharged outside the integrated shell, and it is also convenient for the outlet of the internal water outlet channel to be connected with the external cooling pipe, so that the cooling water can flow back to the cooling system of the whole vehicle.

[0049] In the embodiment of the present application, the orientation of the inlet of the internal water outlet channel is the same as the orientation of the second radiator water channel interface, and the orientation of the inlet and outlet of the water-cooled radiator of the motor controller are the same, so that the inlet and outlet of the water-cooled radiator of the motor controller can be arranged relative to the second radiator water channel interface and the inlet of the internal water outlet channel respectively along the stacking direction of the electrical cover plate and the electrical receiving groove, so that the cooling water can flow smoothly through the water-cooled radiator of the motor controller. In addition, the outlet of the water-cooled radiator of the motor controller is used to be embedded in the inlet of the internal water outlet channel, which can facilitate the positioning and installation of the water-cooled radiator of the motor controller with the integrated bracket and the integrated housing, and facilitate the assembly and replacement of the water-cooled radiator of the motor controller.

[0050] In the embodiment of the present application, the internal water inlet channel of the integrated shell is used to transport cooling water to the integrated bracket, and the integrated bracket transports cooling water to the water-cooled radiator of the on-board charger and the water-cooled radiator of the motor controller through the first radiator water channel interface and the second radiator water channel interface respectively. The cooling water after cooling and heat exchange of the water-cooled radiator of the on-board charger and the water-cooled radiator of the motor controller is discharged from the on-board device through the internal water outlet channel of the integrated shell, so that the integrated bracket fixes the on-board charger and the motor controller and integrates them into an integrated module, and can also realize cooling and heat dissipation of the electrical components of the on-board charger and the motor controller, thereby not only improving the integration of the electrical components of the on-board charger and the motor controller, but also improving the installation convenience of the structural components of the on-board device, and also improving the cooling and heat dissipation effect of the on-board device.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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 electric vehicle, or the vehicle-mounted device is used to receive power from an external power source to charge the power battery.

[0058] In the vehicle-mounted device in the embodiment of the present application, the internal flow channel of the integrated bracket is used to connect at least one of the water-cooled radiator of the vehicle-mounted charger and the water-cooled radiator of the motor controller in the electrical receiving slot with the internal water inlet channel of the integrated shell, so that the cooling system layout in the vehicle-mounted device is more compact, and the water channel and the vehicle-mounted device structure are more integrated. The integrated bracket can also be used to carry at least one electrical component of the vehicle-mounted 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 vehicle-mounted device can be made more compact, which is beneficial to making the vehicle-mounted device have a smaller volume while improving the cooling efficiency of the vehicle-mounted device. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] 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.

[0060] Figure 1 is a schematic diagram of an electric vehicle provided in an embodiment of the present application;

[0061] Figure 2 is a schematic diagram of a vehicle-mounted device provided in an embodiment of the present application;

[0062] Figure 3 is another schematic diagram of the vehicle-mounted device provided in an embodiment of the present application;

[0063] Figure 4 yes Figure 3 An exploded view of the vehicle-mounted device in FIG.

[0064] Figure 5 is a schematic diagram of a vehicle-mounted device provided by another embodiment of the present application;

[0065] Figure 6 yes Figure 5 An exploded view of the vehicle-mounted device;

[0066] Figure 7 is a schematic diagram of an integrated housing provided in an embodiment of the present application;

[0067] Figure 8 is an exploded diagram of the vehicle-mounted device provided in an embodiment of the present application;

[0068] Fig. 9 is another schematic diagram of the vehicle-mounted device provided in an embodiment of the present application;

[0069] Fig.10 is a schematic diagram of an integrated bracket provided in an embodiment of the present application;

[0070] Fig.11 is another exploded diagram of the vehicle-mounted device provided in an embodiment of the present application;

[0071] Fig.12 is another schematic diagram of the vehicle-mounted device provided in an embodiment of the present application;

[0072] Fig.13 is another exploded diagram of the vehicle-mounted device provided in an embodiment of the present application;

[0073] Fig.14 is another schematic diagram of an integrated bracket provided in an embodiment of the present application;

[0074] Fig.15 yes Fig.14 A cross-sectional view of the integrated bracket along AA;

[0075] Fig.16 is another exploded diagram of the vehicle-mounted device provided in an embodiment of the present application;

[0076] Fig.17 is a schematic diagram of an integrated housing provided by another embodiment of the present application;

[0077] Fig.18 This is another schematic diagram of an integrated housing provided in another embodiment of the present application. DETAILED DESCRIPTION

[0078] 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.

[0079] For ease of understanding, the English abbreviations and related technical terms involved in the embodiments of the present application are explained and described below.

[0080] 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.

[0081] The present application provides a water-cooled 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 electrical cover is used to enclose an electrical receiving slot, the integrated housing includes an electrical receiving slot and an internal water inlet channel, the inlet of the internal water inlet channel is distributed outside the slot of the electrical receiving slot, and the outlet of the internal water inlet channel is distributed inside the slot of the electrical receiving slot. The electrical receiving slot is used to accommodate an integrated bracket and a first circuit board, the first circuit board is used to carry 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. 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 cooling liquid to at least one of the water-cooled radiator of the vehicle-mounted charger or the water-cooled radiator of the motor controller.

[0082] By utilizing the internal flow channel of the integrated bracket to connect at least one of the water-cooled radiator of the on-board charger and the water-cooled radiator of the motor controller in the electrical receiving slot with the internal water inlet channel of the integrated shell, the cooling system layout in the on-board device is made 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.

[0083] Figure 1 It is a schematic diagram of the electric vehicle 1 provided in an embodiment of the present application.

[0084] In one embodiment, an electric vehicle 1 includes a power battery 10 and an onboard device 20, such as Figure 1 As 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.

[0085] Figure 2 It is a schematic diagram of the vehicle-mounted device 20 provided in an embodiment of the present application.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] In one embodiment, if Figure 3 and Figure 4 As 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.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] In one embodiment, if Figure 4 As 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.

[0096] 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 .

[0097] In one embodiment, if Figure 5 and Figure 6As 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.

[0098] The vehicle-mounted device 20 provided in an embodiment of the present application will be described in detail below.

[0099] 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.

[0100] 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.

[0101] 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.

[0102] In one embodiment, if Figure 8 As 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.

[0103] 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. 9As 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.

[0104] 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.

[0105] 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.

[0106] 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.

[0107] 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.

[0108] 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.

[0109] 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.

[0110] Fig.11It is another exploded view of the vehicle-mounted device 20 provided in an embodiment of the present application.

[0111] 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.

[0112] 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.

[0113] 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.

[0114] 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.

[0115] 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.

[0116] Fig.12It is another schematic diagram of the vehicle-mounted device 20 provided in an embodiment of the present application.

[0117] 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.

[0118] 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.

[0119] 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 .

[0120] 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.

[0121] 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.

[0122] 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 .

[0123] 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.

[0124] 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.

[0125] 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.

[0126] 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.

[0127] 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.

[0128] 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.

[0129] 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.

[0130] 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.

[0131] 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.

[0132] 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.

[0133] 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.

[0134] 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.

[0135] 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.

[0136] 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.

[0137] 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.

[0138] 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.

[0139] 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 .

[0140] 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.

[0141] 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.

[0142] 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.

[0143] in, Fig.12 The transformer 260, inductor 270 and capacitor 280 are only for illustration and do not represent specific structures.

[0144] 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.

[0145] 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.

[0146] 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.

[0147] 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 .

[0148] 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.

[0149] In one embodiment, a sealing ring is provided between the bracket water channel inlet 501 and the outlet 432 .

[0150] Fig.13 It is another exploded view of the vehicle-mounted device 20 provided in an embodiment of the present application.

[0151] 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 .

[0152] 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 .

[0153] 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 .

[0154] 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.

[0155] 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 .

[0156] 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.

[0157] 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.

[0158] 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.

[0159] 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.

[0160] 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.

[0161] 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.

[0162] 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.

[0163] 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.

[0164] 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.

[0165] 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.

[0166] 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 .

[0167] 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.

[0168] 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 .

[0169] 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.

[0170] 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.

[0171] 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.

[0172] 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.

[0173] 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.

[0174] 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.

[0175] 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.

[0176] 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.

[0177] 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.

[0178] 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.

[0179] 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.

[0180] 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.

[0181] 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.

[0182] 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.

[0183] 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.

[0184] 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.

[0185] 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.

[0186] 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.

[0187] 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.

[0188] 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.

[0189] 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.

[0190] 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.

[0191] 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.

[0192] 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.

[0193] 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.

[0194] 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.

[0195] 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.

[0196] 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.

[0197] 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.

[0198] In one embodiment, if Figure 3 , Figure 5 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 .

[0199] 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.

[0200] 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.

[0201] 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.

[0202] 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.

[0203] 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.

[0204] 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.

[0205] 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.

[0206] The above is a detailed introduction to the water-cooled vehicle-mounted device and electric vehicle provided in the embodiments of the present application. 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 ideas 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 water-cooled 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 an internal water inlet channel, the electrical cover is used to enclose the electrical receiving slot, the inlet of the internal water inlet channel is distributed outside the slot of the electrical receiving slot, and the outlet of the internal water inlet channel is distributed inside the slot of the electrical receiving slot, wherein: The electrical receiving slot is used to receive an integrated bracket and a first circuit board, the first circuit board is used to carry electrical components of at least one of the on-board charger or the motor controller, and the integrated bracket is arranged between the first circuit board and the bottom of 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 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.

2. The vehicle-mounted device according to claim 1, characterized in that: The outlet of the internal water inlet channel is distributed at the bottom of the electrical receiving slot, and the bracket water channel inlet is used to connect with the outlet of the internal water inlet channel, wherein: The orientation of the outlet of the internal water inlet channel is the same as the orientation of the notch of the electrical receiving slot, and the orientation of the bracket water channel inlet is opposite to the orientation of the notch of the electrical receiving slot.

3. The vehicle-mounted device according to claim 2, characterized in that: The outlet of the internal water inlet channel protrudes from the bottom of the electrical accommodation slot, and the bracket water channel inlet is used to be embedded in the outlet of the internal water inlet channel.

4. The vehicle-mounted device according to any one of claims 1 to 3, 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, the bracket water channel inlet is distributed on a side of the integrated bracket away from the electrical cover, and the direction of the first radiator water channel interface is opposite to that of the bracket water channel inlet.

5. The vehicle-mounted device according to claim 4, characterized in that: The integrated bracket includes a support column, which protrudes from a side of the integrated bracket facing the electrical cover plate. The end surface of the support column facing the electrical cover plate includes a groove, and the groove is used to fix the water-cooled radiator of the on-board charger. The first circuit board is arranged between the water-cooled radiator of the on-board charger and the integrated bracket.

6. The vehicle-mounted device according to claim 5, characterized in that: The first radiator water channel interface is distributed at the bottom of the groove, and the inlet and outlet of the water-cooled radiator of the on-board charger are used to be embedded in the groove. The first radiator water channel interface includes a radiator water inlet interface and a radiator water outlet interface. The radiator water inlet interface is used to connect to the inlet of the water-cooled radiator of the on-board charger, and the radiator water outlet interface is used to connect to the outlet of the water-cooled radiator of the on-board charger.

7. The vehicle-mounted device according to claim 6, characterized in that: The integrated bracket includes a first internal flow channel and a second internal flow channel. The first internal flow channel is used to connect the bracket water channel inlet and the radiator water inlet interface, and the second internal flow channel is used to connect the radiator water outlet interface and the inlet of the water-cooled radiator of the motor controller. The first internal flow channel and the second internal flow channel are distributed inside the support column, and the first internal flow channel and the second internal flow channel pass through the support column along the stacking direction of the electrical cover plate and the electrical containing groove.

8. The vehicle-mounted device according to claim 7, characterized in that: The integrated bracket also includes a cooling groove and a cooling cover plate, the cooling groove is distributed on the side of the integrated bracket away from the electrical cover plate, the cooling cover plate is used to enclose the cooling groove to form a third internal flow channel, the bracket water channel inlet is distributed on the cooling cover plate, the groove bottom of the cooling groove includes a first connecting hole and a second connecting hole, the first connecting hole and the second connecting hole respectively penetrate the groove bottom of the cooling groove, the first connecting hole is used to connect to the radiator water inlet interface through the first internal flow channel, the second connecting hole is used to connect to the radiator water outlet interface through the second internal flow channel, the first connecting hole and the second connecting hole are also used to connect to the inlet of the water-cooled radiator of the motor controller through the third internal flow channel.

9. The vehicle-mounted device according to claim 8, characterized in that: The bottom of the cooling groove also includes a first dividing protrusion and a second dividing protrusion, the first dividing protrusion is used to separate the first connecting hole and the second connecting hole, the second dividing protrusion is distributed on the side of the first dividing protrusion facing the first connecting hole, the height of the second dividing protrusion is smaller than the height of the first dividing protrusion, and the projection of the bracket water channel inlet along the stacking direction of the cover plate and the electrical containing groove is located on the side of the second dividing protrusion facing the first connecting hole.

10. The vehicle-mounted device according to claim 9, characterized in that: The bottom of the cooling groove further includes a plurality of heat dissipation teeth and a plurality of flow guide teeth, wherein: The multiple heat dissipation teeth are distributed on both sides of the first partition protrusion, and the multiple guide teeth are distributed on both sides of the first partition protrusion. At least one of the number, shape or arrangement of the guide teeth or the heat dissipation teeth on both sides of the first partition protrusion is different.

11. The vehicle-mounted device according to any one of claims 1 to 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 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.

12. The vehicle-mounted device according to claim 11, characterized in that: The inlet of the water cooling radiator of the motor controller is used to connect to the water channel interface of the second radiator, wherein: The direction of the second radiator water channel interface is opposite to the direction of the bracket water channel inlet, the direction of the inlet of the water-cooled radiator of the motor controller is the same as the direction of the bracket water channel inlet, and the inlet of the water-cooled radiator of the motor controller is used to be embedded in the second radiator water channel interface.

13. The vehicle-mounted device according to claim 12, characterized in that: The integrated housing further comprises an internal water outlet channel, the inlet of which is used to receive cooling water discharged from the outlet of the water cooling radiator of the motor controller, wherein: The inlet of the internal water outlet channel is distributed at the bottom of the electrical containing groove, and the outlet of the internal water outlet channel is distributed outside the electrical containing groove; the direction of the inlet of the internal water outlet channel is the same as the direction of the second radiator water channel interface, the direction of the inlet and outlet of the water-cooled radiator of the motor controller are the same, and the outlet of the water-cooled radiator of the motor controller is used to be embedded in the inlet of the internal water outlet channel.

14. The vehicle-mounted device according to claim 13, 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 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 slot wall of the electrical receiving slot includes a first slot wall, a second slot wall, a third slot wall and a fourth slot wall, the first slot wall and the second slot wall are arranged opposite to each other along the axial direction of the drive motor, and the third slot wall and the fourth slot wall are arranged opposite to each other along the axial direction perpendicular to the drive motor , the distance between the first slot wall and the slot opening of the motor accommodating slot is greater than the distance between the second slot wall and the slot opening of the motor accommodating slot, the distance between the third slot wall and the motor shaft of the drive motor is less than the distance between the fourth slot wall and the motor shaft of the drive motor, the entrance of the internal water inlet channel is distributed on the third slot 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 slot wall, the three-phase copper discharge line holes of the vehicle-mounted device are distributed on the second slot wall, and the outlet of the internal water outlet channel is distributed on the outside of the fourth slot wall.

15. An electric vehicle, characterized in that: The electric vehicle comprises 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 electric 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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