Water-cooled on-board device and electric vehicle

Abstract

The present application provides a water-cooled on-board device and an electric vehicle. A housing of the on-board device comprises an integrated housing. The integrated housing comprises an electric accommodating recess and an internal water inlet channel. The electric accommodating recess is used for accommodating an integrated support and a first circuit board. The first circuit board is used for bearing an electric component of at least one of an on-board charger or a motor control unit, and the integrated support is arranged between the first circuit board and the bottom of the electric accommodating recess. The integrated support comprises a support water channel inlet and at least one cooler water channel interface. The support water channel inlet is used for receiving cooling water outputted by an outlet of an internal water inlet channel, and each cooler water channel interface is used for conveying cooling liquid to at least one of a water-cooling cooler of the on-board charger or a water-cooling cooler of the motor control unit. The integrated support is used to communicate the water-cooling cooler of the on-board charger and the water-cooling cooler of the motor control unit with the internal water inlet channel of the integrated housing, so that the on-board device has a smaller volume while the cooling efficiency of the on-board device is improved.

Description

Water-cooled vehicle-mounted devices and electric vehicles

[0001] This application claims priority to Chinese Patent Application No. 202411767227.9, filed on November 30, 2024, entitled "Water-cooled heat dissipation vehicle device and electric vehicle", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of electric vehicle technology, and in particular to a water-cooled heat dissipation vehicle-mounted device and an electric vehicle. Background Technology

[0003] Current electric vehicles typically use a powertrain as their power source. Currently, a powertrain includes multiple components such as a motor, reducer, and power supply unit. To achieve diversified powertrain functions, more and more functional modules are integrated into the power supply unit. These modules generate heat during operation, requiring additional heat sinks for cooling. This hinders the miniaturization of the power supply unit and also complicates its housing structure and installation. Summary of the Invention

[0004] This application provides a water-cooled vehicle-mounted device and an electric vehicle. The water-cooled radiator of the on-board charger and the water-cooled radiator of the motor controller are connected through an internal flow channel of an integrated bracket, thereby improving the cooling efficiency of the vehicle-mounted device while maintaining a smaller size.

[0005] In a first aspect, this application provides a water-cooled vehicle-mounted device. The vehicle-mounted device includes at least one of an on-board 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 encloses the electrical receiving slot. The inlet of the internal water inlet channel is located outside the slot, and the outlet of the internal water inlet channel is located inside the slot. The electrical receiving slot accommodates an integrated bracket and a first circuit board. The first circuit board carries electrical components of at least one of the on-board charger or the motor controller. The integrated bracket is arranged between the first circuit board and the bottom of the slot. The integrated bracket includes a bracket water channel inlet and at least one radiator water channel interface. The bracket water channel inlet receives cooling water output from the outlet of the internal water inlet channel. Each radiator water channel interface supplies cooling water to at least one of the water-cooled radiators of the on-board charger or the motor controller.

[0006] In this embodiment, the first circuit board is used to support at least one electrical component of the on-board charger or motor controller. An integrated bracket is arranged between the first circuit board and the bottom of the electrical receiving slot, allowing the integrated bracket to support at least one electrical component of the on-board charger or motor controller. This facilitates the assembly process by fixing the at least one electrical component of the on-board charger or motor controller to the integrated bracket before assembling it into the electrical receiving slot. This reduces assembly difficulty and improves the integration and cohesion of the on-board device, contributing to its miniaturization. When the bottom of the electrical receiving slot is not a flat mounting surface, the integrated bracket, positioned between the first circuit board and the bottom of the electrical receiving slot, allows for the installation and fixing of at least one electrical component of the on-board charger or motor controller. This eliminates the need for the component to be directly fixed to the bottom of the electrical receiving slot, simplifying the installation and arrangement of the on-board charger or motor controller. This results in a more organized layout of the on-board charger or motor controller and improves the stability of the electrical connections of the on-board device.

[0007] In this embodiment, the inlet of the internal water inlet channel is located outside the electrical housing slot, facilitating connection between the inlet of the internal water inlet channel and the external cooling water pipe. The outlet of the internal water inlet channel is located inside the electrical housing slot, allowing the cooling water in the vehicle cooling system to flow into the internal water inlet channel of the integrated housing through the outlet of the internal water inlet channel, and then into the interior of the electrical housing slot of the integrated housing through the outlet of the internal water inlet channel, thereby cooling the electrical components inside the electrical housing slot.

[0008] In this embodiment, the integrated bracket includes a bracket water channel inlet and at least one radiator water channel interface. The bracket water channel inlet receives cooling water output from the outlet of the internal water inlet channel, allowing cooling water flowing from the internal water inlet channel of the integrated housing into the electrical receiving tank to flow through the bracket water channel inlet into the internal flow channel of the integrated bracket to dissipate heat from at least one electrical component of the on-board charger or motor controller mounted and fixed on the integrated bracket. Each radiator water channel interface supplies cooling water to at least one of the water-cooled radiators of the on-board charger or motor controller. This allows the integrated bracket to connect the water-cooled radiators of the on-board charger and motor controller to the internal water inlet channel of the integrated housing, thereby delivering coolant from the vehicle cooling system to the water-cooled radiators of the on-board charger and motor controller, thus cooling the on-board charger and motor controller and ensuring the normal operation of the on-board device.

[0009] In this embodiment, an integrated bracket is used to connect the water-cooled radiator of the on-board charger and the water-cooled radiator of the motor controller, which are installed in the electrical housing, to the internal water inlet channel of the integrated housing. This makes the cooling system layout in the on-board device more compact and the water channel more integrated with the structure of the on-board device. The integrated bracket can also be used to support at least one electrical component of the on-board charger or the motor controller, which makes the electrical components in the integrated housing more integrated with the water cooling system. This also makes the components of the on-board device more compact, which is beneficial to improve the cooling efficiency of the on-board device while keeping the on-board device smaller in size.

[0010] In one embodiment, the outlet of the internal water inlet channel is located at the bottom of the electrical receiving tank, and the inlet of the support water channel is used to connect to the outlet of the internal water inlet channel. The outlet of the internal water inlet channel faces the same direction as the opening of the electrical receiving tank, while the inlet of the support water channel faces the opposite direction to the opening of the electrical receiving tank.

[0011] In this embodiment, the outlet of the internal water inlet channel is located at the bottom of the electrical housing, 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 in from the internal water inlet channel of the integrated housing can enter the integrated bracket through the bracket water channel inlet, thereby cooling down the electrical components of the on-board charger and the electrical components of the motor controller.

[0012] In this embodiment, the outlet of the internal water inlet channel faces the same direction as the opening of the electrical receiving slot, while the inlet of the bracket water channel faces the opposite direction. This ensures that the outlet of the internal water inlet channel faces the inlet of the bracket water channel, facilitating smoother reception of cooling water from the outlet of the internal water inlet channel. This accelerates the flow of cooling water into the internal channels of the integrated bracket, allowing for faster delivery of cooling water from each radiator water channel interface of the integrated bracket to the water-cooled radiator of the on-board charger or the motor controller, thus improving the cooling efficiency of the on-board device. Furthermore, it allows for a more compact arrangement of the internal water inlet channel and the internal channels of the integrated bracket, promoting miniaturization of the on-board device.

[0013] In one embodiment, the outlet of the internal water inlet channel protrudes from the bottom of the electrical receiving tank, and the support water inlet is used to be embedded in the outlet of the internal water inlet channel.

[0014] In this embodiment, the outlet of the internal water inlet channel protrudes from the bottom of the electrical receiving slot, facilitating the embedding of the bracket water channel inlet of the integrated bracket into the outlet of the internal water inlet channel. This also allows the outlet of the internal water inlet channel to provide support for the integrated bracket, making its fixation to the bottom of the electrical receiving slot more secure. The bracket water channel inlet, embedded in the outlet of the internal water inlet channel, facilitates the positioning and installation of the integrated bracket and the electrical receiving slot. It also improves the sealing of the connection between the outlet of the internal water inlet channel and the bracket water channel inlet, preventing cooling water leakage. The direct embedding of the bracket water channel inlet into the outlet of the internal water inlet channel eliminates the need for additional connecting pipes, resulting in higher integration of components within the vehicle-mounted device and saving space, thus contributing to the miniaturization of the vehicle-mounted device.

[0015] In one embodiment, at least one radiator water channel interface includes a first radiator water channel interface for connecting to the water-cooled radiator of the on-board charger. The first radiator water channel interface is located on the side of the integrated bracket facing the electrical cover, while the bracket water channel inlet is located on the side of the integrated bracket away from the electrical cover. The orientation of the first radiator water channel interface is opposite to the orientation of the bracket water channel inlet.

[0016] In this embodiment, the water-cooled radiator of the on-board charger is arranged close to the electrical cover plate. The first radiator water channel interface is distributed on the side of the integrated bracket facing the electrical cover plate, facilitating the connection between the first radiator water channel interface and the water-cooled radiator of the on-board charger. This allows cooling water from the internal water inlet channel to be delivered 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 switching transistors in the on-board charger are supported 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 switching transistors in the on-board charger.

[0017] In this embodiment, the water channel inlet of the bracket is located on the side of the integrated bracket away from the electrical cover plate, which facilitates the connection between the water channel inlet of the bracket and the outlet of the internal water inlet channel.

[0018] In this embodiment, the orientation of the first radiator water channel interface is opposite to that of the bracket water channel inlet, so that the cooling water from the vehicle cooling system can flow smoothly 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 into the water-cooled radiator of the on-board charger, thereby cooling the electrical components of the on-board charger.

[0019] In one embodiment, the integrated bracket includes a support column protruding from the side of the integrated bracket facing the electrical cover plate. The end face of the support column facing the electrical cover plate includes a groove for fixing the water-cooled radiator of the on-board charger. A first circuit board is arranged between the water-cooled radiator of the on-board charger and the integrated bracket.

[0020] In this embodiment, 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 weight 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.

[0021] In this embodiment, the end face of the support column facing the electrical cover includes a groove for fixing the water-cooled radiator of the on-board charger. This allows the water-cooled radiator of the on-board charger to be directly positioned through the groove of the support column during assembly, simplifying the assembly process. It also allows for a more compact and integrated layout of the components of the on-board device, which is beneficial for miniaturization.

[0022] In this embodiment, the first circuit board is arranged between the water-cooled radiator and the integrated bracket of the on-board charger, so that the electrical components of the on-board charger can be arranged between the internal flow channels of the water-cooled radiator and the integrated bracket. This allows the cooling water in the internal flow channels of the water-cooled radiator and the integrated bracket to simultaneously cool the electrical components of the on-board charger, thereby improving the cooling efficiency of the on-board charger and thus improving the cooling efficiency of the on-board device.

[0023] In one embodiment, a first radiator water channel interface is distributed at the bottom of the groove, and the inlet and outlet of the on-board charger's water-cooled radiator are embedded in the groove. The first radiator water channel interface includes a radiator inlet interface and a radiator outlet interface. The radiator inlet interface is used to connect to the inlet of the on-board charger's water-cooled radiator, and the radiator outlet interface is used to connect to the outlet of the on-board charger's water-cooled radiator.

[0024] In this embodiment, the first radiator water channel interface is distributed at the bottom of the groove. The inlet and outlet of the on-board charger's water-cooled radiator are embedded in the groove. The radiator inlet interface is connected to the inlet of the on-board charger's water-cooled radiator, allowing cooling water output from the radiator inlet interface of the first radiator water channel interface to enter the inlet of the on-board charger's water-cooled radiator via the shortest path. The radiator outlet interface is connected to the outlet of the on-board charger's water-cooled radiator, allowing cooling water flowing out of the on-board charger's water-cooled radiator to flow back to the first radiator water channel interface from the outlet of the on-board charger's water-cooled radiator and connect with the bracket water channel. The cooling water flowing inside the on-board charger's water-cooled radiator can dissipate heat from the on-board charger's electrical components, thereby ensuring the normal operation of the on-board device.

[0025] 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 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 penetrate the support column along the stacking direction of the electrical cover plate and the electrical receiving groove.

[0026] In this embodiment, the first internal flow channel connects the bracket water inlet and the radiator water inlet, allowing cooling water flowing into the integrated bracket from the bracket water inlet to sequentially flow through the first internal flow channel, the radiator water inlet, and the inlet of the on-board charger's water-cooled radiator to cool the electrical components of the on-board charger. The second internal flow channel connects the radiator water outlet and the inlet of the motor controller's water-cooled radiator, allowing cooling water flowing through the on-board charger's water-cooled radiator to flow from the outlet of the on-board charger's water-cooled radiator, the radiator water outlet, and the second internal flow channel into the inlet of the motor controller's water-cooled radiator. This enables the motor controller's water-cooled radiator to cool the electrical components of the motor controller. Furthermore, it achieves series connection between the on-board charger's water-cooled radiator and the motor controller's water-cooled radiator, resulting in higher integration of the on-board device.

[0027] In this embodiment, the first and second internal flow channels are distributed inside the support column, allowing them to be directly formed using the support column. These channels also provide cooling for the electrical components of the on-board charger mounted on the integrated bracket. The first and second internal flow channels penetrate the support column along the stacking direction of the electrical cover and the electrical receiving groove. This facilitates the fabrication of the channels within the support column and allows for shorter channel lengths. This enables the cooling water from the internal water inlet channel of the integrated housing to quickly enter the water-cooled radiator of the on-board charger from the first internal flow channel, cooling the electrical components. It also facilitates faster delivery of cooling water from the on-board charger's water-cooled radiator to the motor controller's water-cooled radiator via the second internal flow channel, increasing cooling efficiency. Directly utilizing the support column to form the first and second internal flow channels also allows for a more space-efficient arrangement of the cooling water pipes within the on-board device, resulting in a smaller overall size.

[0028] In one embodiment, the integrated bracket further includes a cooling tank and a cooling cover plate. The cooling tank 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 tank to form a third internal flow channel. The water channel inlet of the bracket is distributed on the cooling cover plate. The bottom of the cooling tank 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 tank. 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.

[0029] In this embodiment, the cooling slots are distributed on the side of the integrated bracket away from the electrical cover, so that the distribution of the cooling slots will not interfere with the arrangement of the electrical components of the on-board charger and the electrical components of the motor controller.

[0030] In this embodiment, the bracket water channel inlets are distributed on the cooling cover plate. The first connecting hole is used to connect to 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 on-board charger's water-cooled radiator through the first connecting hole, the first internal flow channel, the radiator water inlet interface, and the inlet of the on-board charger's water-cooled radiator. The second connecting hole is used to connect to the radiator water outlet interface through the second internal flow channel, so that the cooling water flowing out from the on-board charger's water-cooled radiator outlet can flow out through the radiator water outlet interface, the second internal flow channel, and the second connecting hole. The first and second connecting holes are also used to connect the inlet of the water-cooled radiator of the motor controller through the third internal flow channel, so that the cooling water flowing out of the water-cooled radiator of the on-board charger to the second connecting hole can flow through the third internal flow channel to the inlet of the water-cooled radiator of the motor controller. That is, the water-cooled radiator of the on-board charger and the water-cooled 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 integration and fusion of the cooling water flow channels in the on-board device are higher, which is conducive to the miniaturization of the on-board device.

[0031] In this embodiment, the third internal flow channel is located at the bottom of the integrated bracket and is used to cool multiple capacitors, multiple inductors, and multiple transformers of the on-board charger.

[0032] In one embodiment, the bottom of the cooling tank further 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. The projection of the support water channel inlet along the stacking direction of the cover plate and the electrical receiving tank is located on the side of the second dividing protrusion facing the first connecting hole.

[0033] In this embodiment, the first connecting hole communicates with the first internal flow channel, and the second connecting hole communicates with the second internal flow channel. The first dividing protrusion separates the first connecting hole and the second connecting hole, preventing the first internal flow channel and the second internal flow channel from flowing in parallel, allowing cooling water to 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. This allows a portion of the cooling water flowing into the integrated bracket from the bracket water channel inlet to flow from the first connecting hole into the first internal flow channel, and then into the water-cooled radiator of the on-board charger. After cooling the electrical components of the on-board charger, the water flows out of the water-cooled radiator of the on-board charger, flows through the second internal flow channel and the third internal flow channel, and then into the water-cooled radiator of the motor controller to cool the electrical components of the motor controller. It also allows another portion of the cooling water flowing 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. This achieves the splitting and parallel flow of cooling water output from the internal water inlet channel to the bracket water channel inlet, which can improve the cooling efficiency of the vehicle-mounted device.

[0034] In this embodiment, the projection of the bracket water channel inlet along the stacking direction of the electrical cover and the electrical receiving groove is located on the side of the second partition protrusion facing the first connecting hole, so that the cooling water flowing into the integrated bracket from the bracket water channel inlet will not flow directly away from the third internal flow channel, that is, the water-cooled radiator of the vehicle charger will not be without cooling water flowing through it, ensuring that the water-cooled radiator of the vehicle charger can also cool down the electrical components of the vehicle charger.

[0035] In one embodiment, the second partition protrusion has a throttling effect, such that the amount of cooling water flowing from the bracket water channel inlet into the first connecting hole of the integrated bracket and further 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.

[0036] In one embodiment, the bottom of the cooling tank further includes a plurality of heat dissipation teeth and a plurality of flow guiding teeth. The plurality of heat dissipation teeth are distributed on both sides of the first dividing protrusion, and the plurality of flow guiding teeth are also distributed on both sides of the first dividing protrusion. At least one of the flow guiding teeth or heat dissipation teeth on both sides of the first dividing protrusion differs in number, shape, or arrangement.

[0037] In this embodiment, the bottom of the cooling tank also includes multiple heat dissipation teeth and multiple flow guide teeth. The heat dissipation teeth and flow guide teeth have the functions of guiding and stirring the cooling water. The multiple heat dissipation teeth are distributed on both sides of the first partition protrusion, and the multiple flow guide teeth are distributed on both sides of the first partition protrusion, so that the cooling water flowing directly into the third internal flow channel from the bracket water channel inlet 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 tank, which is beneficial to improving the cooling efficiency of the electrical components of the on-board charger in the integrated bracket.

[0038] In the embodiments of this application, at least one of the flow guide teeth or heat dissipation teeth on both sides of the first dividing protrusion has different numbers, shapes or arrangements, which can enhance the flow guiding and stirring effects of the heat dissipation teeth and flow guide teeth, so that the cooling water stays in the third internal flow channel for a longer time, which is more conducive to cooling down the electrical components of the on-board charger.

[0039] In one embodiment, the bottom of the cooling tank can be divided into a first channel tank and a second channel tank 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 tank is used to form one third internal sub-flow channel, and the second channel tank is used for the other third internal sub-flow channel. One third internal sub-flow channel is used to receive cooling water directly supplied to the water-cooled radiator of the motor controller from the bracket water channel inlet. The other third internal sub-flow channel is used to receive cooling water flowing through the water-cooled radiator of the on-board charger output from the second connecting hole, so that the third internal flow channels can achieve parallel flow, which is more conducive to cooling down the electrical components of the on-board charger.

[0040] In one embodiment, at least one radiator water channel interface further includes a second radiator water channel interface for connecting to the water-cooled radiator of the motor controller. The second radiator water channel interface is used to receive cooling water from at least one of the water-cooled radiators of the on-board charger or the water channel inlet of the bracket through the internal flow channels of the integrated bracket.

[0041] In this embodiment, the second radiator water channel interface is used to connect to the water-cooled radiator of the motor controller. 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 water channel inlet of the bracket 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 water channel inlet of the bracket 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 on-board device.

[0042] In one embodiment, the inlet of the water-cooled radiator of the motor controller is used to connect to the water channel interface of the second radiator. The orientation of the second radiator water channel interface is opposite to the orientation of the bracket water channel inlet, while the orientation of the water-cooled radiator inlet of the motor controller is the same as the orientation of the bracket water channel inlet. The inlet of the water-cooled radiator of the motor controller is used to be embedded in the second radiator water channel interface.

[0043] In this embodiment, the inlet of the water-cooled radiator of the motor controller is used to connect to the water channel interface of the second radiator, so that the cooling water output from the water channel interface of the second radiator 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 down the electrical components of the motor controller.

[0044] In this embodiment, the orientation of the second radiator water channel interface is opposite to that of the bracket water channel inlet, and the orientation of the inlet of the motor controller's water-cooled radiator is the same as that of the bracket water channel inlet, so that the orientation of the second radiator water channel interface is opposite to that of the inlet of the motor controller's water-cooled radiator, which facilitates the input of cooling water from the second radiator water channel interface to the inlet of the motor controller's water-cooled radiator.

[0045] In this embodiment, the inlet of the water-cooled radiator of the motor controller is embedded in the water channel interface of the second radiator. This facilitates the positioning and installation of the water-cooled radiator of the motor controller with the integrated bracket, and also improves the sealing of the connection between the water channel interface of the second radiator and the inlet of the water-cooled radiator of the motor controller, preventing cooling water leakage. Since the inlet of the water-cooled radiator of the motor controller is directly embedded in the water channel interface of the second radiator, no additional connecting pipes are needed. This results in higher integration of components within the vehicle-mounted device, saves space in the device, and promotes miniaturization.

[0046] In one embodiment, the cooling tank further includes a connecting flow channel located on the support arm. The connecting flow channel is connected to the water channel interface of the second radiator. The connecting flow channel receives cooling water from the first channel and the second channel. The cooling water in the connecting flow channel can cool the bus capacitor of the motor controller.

[0047] In one embodiment, the integrated housing further includes an internal water outlet channel, the inlet of which is used to receive cooling water discharged from the outlet of the motor controller's water-cooled radiator. The inlet of the internal water outlet channel is located at the bottom of the electrical receiving slot, while the outlet is located outside the electrical receiving slot. The inlet of the internal water outlet channel faces the same direction as the water channel interface of the second radiator, and the inlet and outlet of the motor controller's water-cooled radiator face the same direction. The outlet of the motor controller's water-cooled radiator is embedded within the inlet of the internal water outlet channel.

[0048] In this embodiment, 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 whole vehicle cooling system can flow back to the whole vehicle cooling system after flowing through the on-board device, forming a recycling of cooling water.

[0049] In this embodiment, the inlet of the internal water outlet channel is located at the bottom of the electrical housing, so that the inlet of the internal water outlet channel can be connected to the outlet of the water-cooled radiator of the motor controller arranged in the electrical housing. The outlet of the internal water outlet channel is located outside the electrical housing, so that the cooling water in the water-cooled radiator of the motor controller can be discharged outside the integrated housing, and it is also convenient for the outlet of the internal water outlet channel to be connected to the external cooling pipe, so that the cooling water can flow back to the vehicle cooling system.

[0050] In this embodiment, the inlet of the internal water outlet channel faces the same direction as the water channel interface of the second radiator. The inlet and outlet of the water-cooled radiator of the motor controller also face the same direction. This allows the inlet and outlet of the water-cooled radiator to be arranged opposite to the water channel interface of the second radiator and the inlet of the internal water outlet channel, respectively, along the stacking direction of the electrical cover and the electrical receiving groove. This ensures smooth flow of cooling water through the water-cooled radiator of the motor controller. Furthermore, the outlet of the water-cooled radiator is embedded in the inlet of the internal water outlet channel, facilitating the positioning and installation of the water-cooled radiator with the integrated bracket and integrated housing, and simplifying the assembly and replacement of the water-cooled radiator.

[0051] In this embodiment, the internal water inlet channel of the integrated housing is used to supply cooling water to the integrated bracket. The integrated bracket supplies 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. After cooling and heat exchange of the water-cooled radiator of the on-board charger and the water-cooled radiator of the motor controller, the cooling water is discharged from the vehicle device through the internal water outlet channel of the integrated housing. Thus, after the integrated bracket fixes the on-board charger and the motor controller into an integrated module, it can also cool and dissipate heat from the electrical components of the on-board charger and the motor controller. This not only improves the integration of the electrical components of the on-board charger and the motor controller, but also improves the installation convenience of the structural components of the vehicle device, and enhances the cooling and heat dissipation effect of the vehicle device.

[0052] In one embodiment, the vehicle-mounted device further includes a drive motor and a reducer. The housing of the vehicle-mounted device also 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 drive 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. 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 drive motor. The slot opening orientation of the motor receiving slot is opposite to that of the reducer receiving slot. The slot opening orientation of the motor receiving slot is perpendicular to the slot opening orientation of both the motor receiving slot and the reducer receiving slot. The electrical receiving tank has four walls: a first wall, a second wall, a third wall, and a fourth wall. The first and second walls are arranged opposite each other along the axial direction of the drive motor, while the third and fourth walls are arranged opposite each other along an axial direction perpendicular to the drive motor. The distance between the first wall and the opening of the motor receiving tank is greater than the distance between the second wall and the opening of the motor receiving tank. The distance between the third wall and the motor shaft of the drive motor is less than the distance between the fourth wall and the motor shaft of the drive motor. The inlet of the internal water inlet channel is located on the third wall. The power battery interface and the load power supply interface of the vehicle-mounted device are located on the first wall. The three-phase copper discharge hole of the vehicle-mounted device is located on the second wall. The outlet of the internal water outlet channel is located on the outside of the fourth wall.

[0053] In this embodiment, the third and fourth tank walls are arranged opposite each other along an axis perpendicular to the drive motor. The inlet of the internal water inlet channel is located on the third tank wall, and the outlet of the internal water outlet channel is located on the outside of the fourth tank wall. This allows the cooling water to have a longer flow path from the inlet of the internal water inlet channel into the internal flow channel of the integrated bracket, the water-cooled radiator of the on-board charger, and the water-cooled radiator of the motor controller, and finally out of the outlet of the internal water outlet channel. This is beneficial for the internal flow channel of the integrated bracket, the water-cooled radiator of the on-board charger, and the water-cooled radiator of the motor controller to dissipate heat from the electrical components of the on-board charger and the electrical components of the motor controller, thereby improving the cooling efficiency of the on-board device.

[0054] In this embodiment, the electrical components of the on-board charger in the vehicle device are stacked on the drive motor. The inlet of the internal water inlet channel is distributed on the outside of the third tank wall, so that the cooling water enters the integrated bracket from the inlet of the internal water inlet channel and flows quickly into the water-cooled heat sink of the on-board charger and the third internal flow channel at the bottom of the integrated bracket to dissipate heat from the on-board charger. Furthermore, 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 effect of the vehicle device.

[0055] In this embodiment, the outlet of the internal water outlet channel is located on the fourth groove wall near the reducer. The electrical components of the motor controller in the vehicle device are stacked in the gap between the drive motor and the reducer. Since the bus capacitor 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. It also allows the outlet of the internal water outlet channel, which is connected to the water-cooled radiator of the motor controller, to be connected to an external pipeline from the gap between the drive motor and the reducer. This fully utilizes the gap between the drive motor and the reducer, making the structure of the vehicle device compact and facilitating the miniaturization of the vehicle device.

[0056] In this embodiment, the first and second slot walls are arranged opposite each other along the axial direction of the drive motor. The power battery interface and the load power supply interface of the vehicle-mounted device are located on the first slot wall, where the load power supply interface is a second connector used to connect to the compressor. The three-phase copper output cable holes of the vehicle-mounted device are located on the second slot wall, allowing the current input from the power battery to the vehicle charger to flow more smoothly through the three-phase output copper busbars to the stator windings of the drive motor, thereby driving the drive motor. The fact that both the power battery interface and the load power supply interface of the vehicle-mounted device are located on the first slot wall facilitates faster power supply from the vehicle charger to the load of the vehicle-mounted device via the load power supply interface.

[0057] In this embodiment, the power battery interface and the load power supply interface of the vehicle device are distributed on the first groove wall, the three-phase copper discharge hole of the vehicle device is distributed on the second groove wall, 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, making the opening of the electrical receiving groove more reasonable and regular.

[0058] Secondly, this application provides an electric vehicle, which includes a power battery and an on-board device as described in the first aspect. The on-board 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 on-board device is used to receive power from an external power source to charge the power battery.

[0059] In the vehicle-mounted device of this application embodiment, at least one of the water-cooled radiators of the vehicle-mounted charger and the motor controller in the electrical housing slot is connected to the internal water inlet channel of the integrated housing by utilizing the internal flow channel of the integrated bracket. This makes the cooling system layout in the vehicle-mounted device more compact and the integration of the water channel and the vehicle-mounted device structure higher. The integrated bracket can also be used to support the electrical components of at least one of the vehicle-mounted charger or the motor controller, making the electrical components in the integrated housing highly integrated with the water cooling system. This also makes the components of the vehicle-mounted device more compact, which is beneficial to improve the cooling efficiency of the vehicle-mounted device while keeping its size smaller. Attached Figure Description

[0060] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments of this application will be described below.

[0061] Figure 1 is a schematic diagram of an electric vehicle provided in an embodiment of this application;

[0062] Figure 2 is a schematic diagram of a vehicle-mounted device provided in an embodiment of this application;

[0063] Figure 3 is another schematic diagram of the vehicle-mounted device provided in an embodiment of this application;

[0064] Figure 4 is an exploded view of the vehicle-mounted device in Figure 3;

[0065] Figure 5 is a schematic diagram of a vehicle-mounted device provided in another embodiment of this application;

[0066] Figure 6 is an exploded view of the vehicle-mounted device in Figure 5;

[0067] Figure 7 is a schematic diagram of an integrated housing provided in an embodiment of this application;

[0068] Figure 8 is an exploded view of a vehicle-mounted device provided in an embodiment of this application;

[0069] Figure 9 is another schematic diagram of the vehicle-mounted device provided in an embodiment of this application;

[0070] Figure 10 is a schematic diagram of an integrated bracket provided in an embodiment of this application;

[0071] Figure 11 is another exploded view of the vehicle-mounted device provided in an embodiment of this application;

[0072] Figure 12 is another schematic diagram of the vehicle-mounted device provided in an embodiment of this application;

[0073] Figure 13 is another exploded view of the vehicle-mounted device provided in an embodiment of this application;

[0074] Figure 14 is another schematic diagram of the integrated bracket provided in an embodiment of this application;

[0075] Figure 15 is a cross-sectional view of the integrated support along AA in Figure 14;

[0076] Figure 16 is another exploded view of the vehicle-mounted device provided in an embodiment of this application;

[0077] Figure 17 is a schematic diagram of an integrated housing provided in another embodiment of this application;

[0078] Figure 18 is another schematic diagram of an integrated housing provided in another embodiment of this application. Detailed Implementation

[0079] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0080] For ease of understanding, the English abbreviations and related technical terms used in the embodiments of this application will be explained and described below.

[0081] PFC: an abbreviation for Power Factor Correction, also known as power factor correction, mainly controls the waveform of the input current to synchronize it with the waveform of the input voltage, thereby improving the power factor and reducing harmonic content.

[0082] This application provides a water-cooled vehicle-mounted device. The vehicle-mounted device includes at least one of an on-board charger or a motor controller. The housing of the vehicle-mounted device includes an integrated housing and an electrical cover plate. The electrical cover plate encloses an electrical receiving slot. The integrated housing includes the electrical receiving slot and an internal water inlet channel. The inlet of the internal water inlet channel is located outside the slot, and the outlet of the internal water inlet channel is located inside the slot. The electrical receiving slot accommodates an integrated bracket and a first circuit board. The first circuit board carries electrical components of at least one of the on-board charger or motor controller. The integrated bracket is arranged between the first circuit board and the bottom of the slot. The integrated bracket includes a bracket water channel inlet and at least one radiator water channel interface. The bracket water channel inlet receives cooling water output from the outlet of the internal water inlet channel. Each radiator water channel interface supplies coolant to at least one of the water-cooled radiators of the on-board charger or the motor controller.

[0083] By utilizing the internal flow channels of the integrated bracket to connect at least one of the water-cooled radiators of the on-board charger and the motor controller in the electrical housing slot to the internal water inlet channel of the integrated housing, the cooling system layout within the on-board device becomes more compact, and the water channel structure is more integrated. The integrated bracket can also be used to support electrical components of at least one of the on-board charger or the motor controller, resulting in a high degree of integration between the electrical components and the water cooling system within the integrated housing. This also makes the components of the on-board device more compact, which is beneficial for improving the cooling efficiency of the on-board device while maintaining a smaller size.

[0084] Figure 1 is a schematic diagram of an electric vehicle 1 provided in an embodiment of this application.

[0085] In one embodiment, an electric vehicle 1 includes a power battery 10 and an on-board unit 20, as shown in FIG1. ​​The on-board unit 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 a load. In this embodiment, the electric vehicle 1 refers to a wheeled device driven or towed by a power device. In one embodiment, the on-board unit 20 can be an on-board charger or a motor controller. In one embodiment, the on-board unit 20 can be a power supply device including an on-board charger and a motor controller. In one embodiment, the on-board unit 20 can be a multi-functional power supply device including an on-board charger, a motor controller, a power distribution device, a vehicle controller, and other functional devices. In one embodiment, the on-board unit 20 includes a power supply device, a drive motor, and a reducer, wherein the on-board unit 20 can also be referred to as a powertrain or a multi-functional powertrain.

[0086] Figure 2 is a schematic diagram of a vehicle-mounted device 20 provided in an embodiment of this application.

[0087] In one embodiment, as shown in Figures 1 and 2, the vehicle-mounted device 20 includes a power supply device 21, a drive motor 22, and a reducer 23. In this embodiment, the power supply device 21 supplies power to the drive motor 22. The power supply device 21 receives high-voltage direct current (DC) from the power battery 10 and converts it into high-voltage alternating current (AC) to drive the drive motor 22, causing it to rotate. The drive motor 22 is connected to the reducer 23, and the drive motor 22 drives the reducer 23 to rotate. In this embodiment, the vehicle-mounted device 20 can also be referred to as a powertrain.

[0088] In this embodiment, 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 of the drive motor 22 is fixedly sleeved on the motor shaft. After receiving AC power, the motor stator drives the rotor of the motor 22 to rotate, thereby driving the motor shaft to rotate. The motor shaft of the drive motor 22 is connected to the input shaft of the reducer 23. The input shaft receives the power transmitted from the motor shaft of the drive motor 22 and transmits the power to the output shaft through the gear assembly. The output shaft drives the wheels 30 of the electric vehicle 1 to move.

[0089] Figure 3 is another schematic diagram of the vehicle-mounted device 20 provided in the embodiment of this application, and Figure 4 is an exploded view of the vehicle-mounted device 20 in Figure 3.

[0090] In one embodiment, as shown in Figures 3 and 4, 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 receives DC power from the power battery 10 and converts it into AC power, which is then transmitted to the stator windings of the drive motor 22 to enable the drive motor 22 to operate.

[0091] The English name for the on-board charger 200 is On-Board Charger, abbreviated as OBC. 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 vehicle's load.

[0092] The English name of the vehicle controller 300 is Vehicle control unit, abbreviated as VCU. In one embodiment, the vehicle controller 300 is responsible for the normal driving of the vehicle, braking energy feedback, energy pipelines and network pipelines of the vehicle drive system and power battery 10, fault diagnosis and handling, vehicle status monitoring and other functions.

[0093] 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 this embodiment, the vehicle-mounted device 20 may also be referred to as a power supply device 21.

[0094] In one embodiment, as shown in FIG4, the vehicle-mounted device 20 includes a housing 400 and an integrated bracket 500. The housing 400 includes an electrical receiving groove 411. The bottom 4111 of the electrical receiving groove 411 is used to fix and receive the integrated bracket 500. The integrated bracket 500 is used to carry electrical components of at least one of the vehicle-mounted charger 200 or the motor controller 100.

[0095] In one embodiment, as shown in FIG4, the housing 400 of the vehicle-mounted device 20 includes a plurality of mounting holes 401 for fixing a plurality of connectors 402. The plurality of connectors 402 include connectors for connecting the vehicle-mounted device 20 to the power battery 10, vehicle load, compressor, stator winding of drive motor 22, vehicle controller 300, etc.

[0096] In one embodiment, as shown in FIG4, the vehicle-mounted device 20 includes a water-cooled radiator 110 for a motor controller 100 and a water-cooled radiator 210 for an on-board charger 200. The water-cooled radiator 110 for the motor controller 100 is used to cool down the electrical components of the motor controller 100, and the water-cooled radiator 210 for the on-board charger 200 is used to cool down the electrical components of the on-board charger 200. The integrated bracket 500 includes a water-cooling channel (not shown). The water-cooled radiator 110 for the motor controller 100 and the water-cooled radiator 210 for the on-board 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 high.

[0097] Figure 5 is a schematic diagram of a vehicle-mounted device 20 provided in another embodiment of this application, and Figure 6 is an exploded view of the vehicle-mounted device 20 in Figure 5.

[0098] In one embodiment, as shown in Figures 5 and 6, the on-board unit 20 further includes a drive motor 22 and a reducer 23. The housing 400 includes an integral 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 electrical components of at least one of the on-board charger 200 or the motor controller 100. The bottom 4111 of the electrical receiving slot 411 is used to fix and receive an integrated bracket 500, which is used to support electrical components of at least one of the on-board charger 200 or the motor controller 100. The motor receiving slot 412 is used to fix and receive the stator of the drive motor 22, and the reducer receiving slot 413 is used to receive the gear set of the reducer 23. Among them, 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 slot opening of the motor receiving slot 412 is opposite to the slot opening of the reducer receiving slot 413. The slot opening 4112 of the electrical receiving slot 411 is perpendicular to the slot opening of the motor receiving slot 412 and the slot opening of the reducer receiving slot 413.

[0099] The vehicle-mounted device 20 provided in the embodiments of this application will be described in detail below.

[0100] Figure 7 is a schematic diagram of an integrated housing 410 provided in an embodiment of this application; Figure 8 is an exploded view of a vehicle-mounted device 20 provided in an embodiment of this application; Figure 9 is another schematic diagram of a vehicle-mounted device 20 provided in an embodiment of this application; and Figure 10 is a schematic diagram of an integrated bracket 500 provided in an embodiment of this application.

[0101] In one embodiment, as shown in Figures 3 and 4, a water-cooled vehicle-mounted device 20 includes at least one of an on-board charger 200 or a motor controller 100. The housing 400 of the vehicle-mounted device 20 includes an integrated housing 410 and an electrical cover 420. As shown in Figure 7, the integrated housing 410 includes an electrical receiving groove 411, and the electrical cover 420 is used to enclose the electrical receiving groove 411. As shown in Figures 4 and 8, the electrical receiving groove 411 is used to accommodate electrical components of an integrated bracket 500, a first circuit board 600, and at least one of the on-board charger 200 or the motor controller 100. The first circuit board 600 is used to support 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 bottom 4111 of the electrical receiving groove 411.

[0102] In this embodiment, 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. 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. This allows at least one electrical component of the on-board charger 200 or the motor controller 100 to be installed and fixed in the integrated bracket 500 and then assembled into the electrical receiving slot 411 during the assembly of the on-board device 20, which facilitates the assembly process and reduces the assembly difficulty. As can be seen from Figure 7, the bottom 4111 of the electrical receiving slot 411 is not a flat mounting surface. The integrated bracket 500 is arranged between the first circuit board 600 and the bottom 4111 of the electrical receiving slot 411. Using the integrated bracket 500 to install and fix at least one electrical component of the on-board charger 200 or the motor controller 100 also means that at least one electrical component of the on-board charger 200 or the motor controller 100 does not need to be directly fixed to the bottom 4111 of the electrical receiving slot 411. This facilitates the installation and arrangement of the on-board charger 200 or the motor controller 100, and helps to make the arrangement of the on-board charger 200 or the motor controller 100 more regular. It can also improve the stability of the electrical connection of the on-board device 20.

[0103] In one embodiment, as shown in FIG8, the bottom 4111 of the electrical receiving slot 411 is used to fix the integrated bracket 500. In this embodiment, 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 integrated bracket 500 is used to fix the electrical components of the motor controller 100 and the on-board charger 200 of the on-board device 20 together to form an integrated module 20a. During assembly, the motor controller 100 and the on-board charger 200 can be installed in the integrated bracket 500 and then installed in the electrical receiving slot 411, which makes the assembly and installation process of the motor controller 100 and the on-board charger 200 simpler.

[0104] In one embodiment, the integrated bracket 500 is also used to cool electrical components of at least one of the on-board charger 200 or the motor controller 100. In one embodiment, as shown in FIG7, the integrated housing 410 further includes an internal water inlet channel 430, with an inlet 431 of the internal water inlet channel 430 distributed outside the slot of the electrical receiving slot 411, and an outlet 432 of the internal water inlet channel 430 distributed inside the slot of the electrical receiving slot 411. As shown in FIG9 and FIG10, the integrated bracket 500 includes a bracket water channel inlet 501 and at least one radiator water channel interface 502. As shown in FIG7 and FIG9, 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 supply 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.

[0105] In this embodiment, the inlet 431 of the internal water inlet channel 430 is located outside the electrical receiving groove 411, facilitating connection between the inlet 431 of the internal water inlet channel 430 and the external cooling water pipe. The outlet 432 of the internal water inlet channel 430 is located inside the electrical receiving groove 411, allowing the cooling water in the vehicle cooling system to flow into the internal water inlet channel 430 of the integrated housing 410 through the outlet 432 of the internal water inlet channel 430, and then into the interior of the electrical receiving groove 411 of the integrated housing 410 through the outlet 432 of the internal water inlet channel 430, thereby cooling the electrical components inside the electrical receiving groove 411.

[0106] In this embodiment, 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 from the internal water inlet channel 430 of the integrated housing 410 into the electrical receiving tank 411 can flow from the bracket water channel inlet 501 into the internal flow channel 570 of the integrated bracket 500 to dissipate heat from at least one electrical component of the on-board charger 200 or the motor controller 100 mounted and fixed on the integrated bracket 500. Each radiator water channel interface 502 is used to supply cooling water to at least one of the water-cooled radiators 210 of the on-board charger 200 or the water-cooled radiator 110 of the motor controller 100. Thus, the water-cooled radiators 210 of the on-board charger 200 and the water-cooled radiators 110 of the motor controller 100 can be connected to the internal water inlet channels of the integrated housing 410 through the integrated bracket 500. This allows coolant from the vehicle cooling system to be delivered to the water-cooled radiators 210 of the on-board charger 200 and the water-cooled radiators 110 of the motor controller 100, thereby cooling down the on-board charger 200 and the motor controller 100 and ensuring the normal operation of the on-board device 20.

[0107] In this embodiment, the water-cooled radiator 210 of the on-board charger 200 and the water-cooled radiator 110 of the motor controller 100, which are installed in the electrical housing 411, are connected to the internal water inlet channel 430 of the integrated housing 410 through the internal flow channel 570 of the integrated bracket 500. This makes the cooling system layout in the on-board device 20 more compact and the water channel structure more integrated. The integrated bracket 500 can also be used to support electrical components of at least one of the on-board charger 200 or the motor controller 100, making the electrical components in the integrated housing 410 more integrated with the water cooling system. This also makes the components of the on-board device 20 more compact, which is beneficial to improve the cooling efficiency of the on-board device 20 while keeping the on-board device 20 smaller in size.

[0108] In one embodiment, as shown in Figures 7, 8 and 10, the bottom 4111 of the electrical receiving groove 411 is used to fix the integrated bracket 500. As shown in Figure 10, 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 opening 4112 of the electrical receiving groove 411. The plurality of first support members 511 are used to fix and support the first circuit board 600. The side of the first circuit board 600 facing the electrical receiving groove 411 is used to fix an electrical component of at least one of the on-board charger 200 or the motor controller 100.

[0109] In this embodiment, 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 also includes a plurality of first support members 511, which are distributed on the side of the integrated bracket 500 facing the opening 4112 of the electrical receiving groove 411. This makes the plurality of first support members 511 closer to the first circuit board 600, which facilitates the fixation and support of the first circuit board 600 by the plurality of first support members 511, making the structure of the vehicle device 20 more robust.

[0110] In this embodiment, the side of the first circuit board 600 facing the electrical receiving slot 411 is used to fix at least one electrical component of the on-board charger 200 or the motor controller 100, so that the electrical component of at least one electrical component 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, which restricts the movement space of the electrical component of at least one electrical component of the on-board charger 200 or the motor controller 100, which is beneficial to make the installation and fixation of the electrical component of at least one electrical component of the on-board charger 200 or the motor controller 100 more secure and improves the reliability of the on-board device 20.

[0111] Figure 11 is another exploded view of the vehicle-mounted device 20 provided in an embodiment of this application.

[0112] In one embodiment, as shown in Figures 10 and 11, the electrical receiving slot 411 is also used to receive a second circuit board 700, which is used to carry at least one electrical component of the on-board charger 200. The integrated bracket 500 also includes a plurality of second supports 512, which are distributed on one side of the integrated bracket 500 facing the slot 4112 of the electrical receiving slot 4111. The plurality of second supports 512 are used to fix and support the second circuit board 700, which is arranged between the first circuit board 600 and the integrated bracket 500.

[0113] In this embodiment, 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 the side of the integrated bracket 500 facing the slot 4112 of the electrical receiving groove 411, so that the plurality of second support members 512 are closer to the second circuit board 700, which facilitates the plurality of second support members 512 to support and fix the second circuit board 700, making the structure of the vehicle device 20 more robust.

[0114] In this embodiment, the second circuit board 700 is arranged between the first circuit board 600 and the integrated bracket 500, which saves space compared to arranging the second circuit board 700 and the first circuit board 600 in a flat arrangement. 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 arrangement of the second circuit board 700 between the first circuit board 600 and the integrated bracket 500 can also make the electrical components of the on-board charger 200 more compact, improving the integration and cohesion of the on-board device 20.

[0115] In one embodiment, the second circuit board 700 is used to carry the DC-DC converter of the on-board charger 200. In one embodiment, the DC-DC converter is used to convert high-voltage DC power into low-voltage DC power to supply power to low-voltage loads in the vehicle or to supply power to the low-voltage battery in the vehicle.

[0116] 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, allowing the first circuit board 600, the second circuit board 700 and the electrical components they each carry to be stacked, making the electrical components of the on-board charger 200 more compact and improving the integration and fusion of the on-board device 20.

[0117] Figure 12 is another schematic diagram of the vehicle-mounted device 20 provided in the embodiment of this application.

[0118] In one embodiment, as shown in Figures 10 to 12, the integrated bracket 500 further includes at least one shielding wall 520, which is distributed on one side of the integrated bracket 500 facing the slot 4112 of the electrical receiving slot 411. The at least one shielding wall 520 includes a first shielding wall 521, which is used to isolate the electrical components of the on-board charger 200 from the electrical components of the motor controller 100.

[0119] In this embodiment, at least one shielding wall 520 is distributed on the side of the integrated bracket 500 facing the slot 4112 of the electrical receiving slot 411, thereby enabling at least one shielding wall 520 to provide fixed support for 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 beneficial to enable the electrical components of the vehicle-mounted charger 200 and the electrical components of the motor controller 100 to work relatively independently, ensuring the normal operation of the vehicle-mounted device 20.

[0120] In one embodiment, as shown in Figures 10 and 11, the integrated bracket 500 further includes a clearance hole 530. The clearance hole 530 extends through the integrated bracket 500 along the stacking direction of the electrical cover plate 420 and the electrical receiving groove 411, as shown in Figures 9 and 12. The clearance hole 530 is used to accommodate the bus capacitor 120 of the motor controller 100. The clearance hole 530 is located on the side of the first shielding wall 521 away from the electrical components of the on-board charger 200.

[0121] In this embodiment, since the bus capacitor 120 of the motor controller 100 has a large height along the stacking direction Z of the electrical cover plate 420 and the electrical receiving groove 411, accommodating the bus capacitor 120 of the motor controller 100 in the clearance hole 530 of the integrated bracket 500 can prevent the bus capacitor 120 of the motor controller 100 from occupying additional space in the stacking direction Z of the vehicle device 20 along the electrical cover plate 420 and the electrical receiving groove 411, which is beneficial to making the vehicle device 20 smaller.

[0122] In this embodiment, the clearance hole 530 is located on the side of the first shielding wall 521 away from the electrical components of the on-board charger 200. This allows the arrangement of the bus capacitor 120 of the motor controller 100 to fully utilize the space on the side of the first shielding wall 521 away from the electrical components of the on-board charger 200. It also allows the motor controller 100 and the on-board charger 200 to be laid flat and share the first circuit board 600. This simplifies the electrical connection lines between the on-board charger 200 and the motor controller 100, resulting in a higher degree of integration between the on-board charger 200 and the motor controller 100, and reducing the space occupied by the on-board charger 200 and the motor controller 100.

[0123] In one embodiment, as shown in Figures 9 and 12, the three-phase output copper busbar 130 of the motor controller 100 passes through a partial clearance hole 530 between the bus capacitor 120 of the motor controller 100 and the first shielding wall 521.

[0124] In this embodiment, the three-phase output copper busbar 130 is used to supply power to the stator winding of the drive motor 22. The three-phase output copper busbar 130 transmits the AC power 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.

[0125] In this embodiment, the three-phase output copper busbar 130 extends through a portion of the clearance hole 530 between the bus capacitor 120 of the motor controller 100 and the first shielding wall 521, making the arrangement of the electrical components of the motor controller 100 and the on-board charger 200 more compact and making fuller use of the space of the integrated bracket 500, which is beneficial to the miniaturization of the on-board device 20. It also brings the three-phase output copper busbar 130 closer to the stator winding of the drive motor 22, shortening the length of the three-phase output copper busbar 130. Compared to having the three-phase output copper busbar 130 extend from the side of the on-board device 20, the location of the stator winding of the drive motor 22 connected to the on-board device 20 in this solution, in the middle of the on-board device 20, simplifies the side structure of the on-board device 20.

[0126] In one embodiment, as shown in Figures 10 and 12, at least one shielding wall 520 further 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 on-board charger 200.

[0127] In this embodiment, 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 helps to ensure the normal operation of the electrical components of the vehicle-mounted charger 200.

[0128] In one embodiment, as shown in FIG4, 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 sequentially. The space between the second shielding wall 522 and the third shielding wall 523 is used to accommodate the AC filter assembly 220. As shown in FIGS. 8 and 10, the second shielding wall 522 and the third shielding wall 523 form a first opening 503 near the end of 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 AC power supplied by an external power source 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 a first connector 201, which is used to electrically connect the first interface 230 and the external power source.

[0129] In this embodiment, 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 sequentially. The space between the second shielding wall 522 and the third shielding wall 523 is used to accommodate the AC filter assembly 220, thereby electrically isolating the AC filter assembly 220 from other electrical components of the vehicle-mounted 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 AC filter assembly 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 wall near 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 AC power from an external power source through the first interface 230. This allows the first interface 230 to 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 supplied 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.

[0130] In this embodiment, the electrical receiving slot 411 includes a first mounting hole 4113, which is aligned with the first opening 503. This facilitates the insertion and connection of the first connector 201, which passes through the first mounting hole 4113 of the electrical receiving slot 411, and the first interface 230 accommodated by the first opening 503. The first connector 201 is used to electrically connect the first interface 230 and the external power source, so that the AC power input from the external power source can be transmitted sequentially from the first connector 201 and the first interface 230 to the electrical components of the on-board charger 200.

[0131] In one embodiment, at least one shielding wall 520 further includes a fourth shielding wall 524. As shown in FIG10, 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 sequentially. The third shielding wall 523 and the fourth shielding wall 524 form a second opening 504 near the end of the electrical receiving slot 411, as shown in FIG8 and FIG10. The second opening 504 is used to receive the second interface 240. The on-board charger 200 is used to supply power to the compressor through the second interface 240. The second opening 504 and the first opening 503 are on the same side. The electrical receiving slot 411 also includes a second mounting hole 4114. The second mounting hole 4114 is aligned with the second opening 504. The second mounting hole 4114 is used to install a second connector 202. The second connector 202 is used to electrically connect the second interface 240 and the compressor. The second mounting hole 4114 and the first mounting hole 4113 are on the same side.

[0132] In this embodiment, 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 sequentially. The third shielding wall 523 and the fourth shielding wall 524 form a second opening 504 near the end of the electrical receiving slot 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 assembly 220, the first interface 230, and other electrical components of the vehicle-mounted charger 200, ensuring that the operation of the second interface 240 is not subject to electrical interference from other electrical components.

[0133] In this embodiment, the on-board charger 200 is used to supply power to the compressor through the second interface 240. The second opening 504 and the first opening 503 are on the same side, making the arrangement of the first interface 230 and the second interface 240 of the on-board charger 200 more regular.

[0134] In this embodiment, the electrical receiving slot 411 further includes a second mounting hole 4114, which is aligned with the second opening 504. This facilitates the second connector 202, which passes through the second mounting hole 4114 of the electrical receiving slot 411, to be plugged into the second interface 240 accommodated by the second opening 504. The second connector 202 is used to electrically connect the second interface 240 and the compressor, which facilitates the on-board charger 200 to provide current to the compressor and drive the compressor to work.

[0135] In this embodiment, the second mounting hole 4114 is on the same side as the first mounting hole 4113, making the opening of the electrical receiving slot 411 more regular. It also allows the current flowing into the on-board charger 200 from the first interface 230 passing through the first mounting hole 4113 to be transmitted to the compressor more quickly through the second interface 240 passing through the second mounting hole 4114.

[0136] In one embodiment, as shown in Figures 10 and 11, the integrated bracket 500 further includes a low-voltage mounting groove 540, the opening 541 of which faces the electrical cover 420. The low-voltage mounting groove 540 is used to accommodate a third interface 250. The on-board charger 200 is used to supply power to the on-board load through the third interface 250. The low-voltage mounting groove 540 is opposite to the first opening 503 along the opening direction Y of the first mounting hole 4113. The electrical receiving groove 411 also includes a third mounting hole 4115, which is aligned with the low-voltage mounting groove 540. The third mounting hole 4115 is used to install a third connector 203, which is used to electrically connect the third interface 250 and the on-board load.

[0137] In this embodiment, the low-voltage mounting recess 540 is used to accommodate the third interface 250. The low-voltage mounting recess 540 can serve as a shielding cavity for the third interface 250, allowing the third interface 250 to be electrically isolated from other electrical components of the on-board charger 200, reducing electrical interference from other electrical components to the third interface 250. The slot 541 of the low-voltage mounting recess 540 faces the electrical cover plate 420, facilitating the installation of the third interface 250 from above the low-voltage mounting recess 540. The third interface 250 is used to connect to the DC-DC converter of the on-board charger 200 carried by the second circuit board 700.

[0138] In this embodiment, the low-pressure mounting groove 540 along the opening direction Y of the first mounting hole 4113 is opposite to the first opening 503, making the arrangement of the low-pressure mounting groove 540 and the first opening 503 on the integrated bracket 500 more regular. Specifically, the opening direction Y of the first mounting hole 4113 is the same as the axial Y direction of the drive motor 22.

[0139] In this embodiment, the electrical receiving slot 411 further includes a third mounting hole 4115, which is aligned with the low-voltage mounting groove 540. This facilitates the mating of the third connector 203, which passes through the third mounting hole 4115 of the electrical receiving slot 411, with the third interface 250 accommodated in the low-voltage mounting groove 540. The third connector 203 is used to electrically connect the third interface 250 and the vehicle load, allowing the vehicle charger 200 to provide current to the vehicle load through the third interface 250 and the third connector 203. In this embodiment, the vehicle load is a 12V low-voltage load.

[0140] In one embodiment, the low-pressure mounting groove 540 includes two slots 5411 and 5412, as shown in Figures 10 and 11. Along the stacking direction Z of the electrical cover plate 420 and the electrical receiving groove 411, one slot 5411 faces away from the electrical receiving groove 411, and along the opening direction Y of the first mounting hole 4113, the other slot 5412 faces away from the first opening 503.

[0141] In this embodiment, along the stacking direction Z of the electrical cover plate 420 and the electrical receiving groove 411, one slot 5411 faces away from the electrical receiving groove 411, so that the third interface 250 can be installed from above the slot 5411, simplifying the assembly process of the vehicle device 20. Along the opening direction Y of the first mounting hole 4113, another slot 5412 faces away from the first opening 503, so that the third interface 250 and the third connector 203, which are convenient for connecting to the external vehicle load, are installed at the position of the other slot 5412, which helps to simplify the connection cable between the third interface 250 and the external load.

[0142] In one embodiment, as shown in FIG10, 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 arranged sequentially along the X-direction 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 arranged sequentially along the Y-direction of the opening of the first mounting hole 4113.

[0143] In this embodiment of the application, as shown in Figures 10 and 12, transformer slot 551 is used to accommodate the transformer 260 of the on-board device 20, PFC inductor slot 552 is used to accommodate multiple inductors 270 of the on-board charger 200, and PFC capacitor slot 553 is used to accommodate multiple capacitors 280 of the on-board charger 200. The arrangement of transformer slot 551, PFC inductor slot 552, and PFC capacitor slot 553 can improve the structural robustness of the on-board charger 200, which is beneficial to improving the stability of the on-board charger 200 and reducing the electrical interference between the various electrical components of the on-board charger 200.

[0144] In Figure 12, the transformer 260, inductor 270 and capacitor 280 are only schematic locations and do not represent the actual structure.

[0145] In one embodiment, as shown in Figures 7 and 9, the outlet 432 of the internal water inlet channel 430 is distributed at the bottom 4111 of the electrical receiving tank 411, and the support water inlet 501 is used to connect to the outlet 432 of the internal water inlet channel 430. The outlet 432 of the internal water inlet channel 430 faces the same direction as the opening 4112 of the electrical receiving tank 411, while the support water inlet 501 faces the opposite direction to the opening 4112 of the electrical receiving tank 411.

[0146] In this embodiment, the outlet 432 of the internal water inlet channel 430 is distributed at the bottom 4111 of the electrical receiving tank 411. The bracket water inlet 501 is used to connect to the outlet 432 of the internal water inlet channel 430, so that the cooling water flowing in from the internal water inlet channel 430 of the integrated housing 410 can enter the integrated bracket 500 through the bracket water inlet 501, thereby cooling down the electrical components of the on-board charger 200 and the electrical components of the motor controller 100.

[0147] In this embodiment, the outlet 432 of the internal water inlet channel 430 faces the same direction as the slot 4112 of the electrical receiving slot 411, while the inlet 501 of the bracket water channel faces the opposite direction to the slot 4112 of the electrical receiving slot 411. This makes the outlet 432 of the internal water inlet channel 430 face the same direction as the inlet 501 of the bracket water channel, allowing the bracket water channel inlet 501 to receive the cooling water output from the outlet 432 of the internal water inlet channel 430 more smoothly. This accelerates the delivery speed of cooling water into the internal flow channel 570 of the integrated bracket 500, enabling the cooling water to be delivered more quickly from each radiator water channel interface 502 of the integrated bracket 500 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.

[0148] In one embodiment, as shown in Figures 7 and 9, 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 inlet 501 is used to be embedded in the outlet 432 of the internal water inlet channel 430.

[0149] In this embodiment, the outlet 432 of the internal water inlet channel 430 protrudes from the bottom 4111 of the electrical receiving groove 411, facilitating the embedding of the bracket water channel inlet 501 of the integrated bracket 500 into the outlet 432 of the internal water inlet channel 430. This also allows the outlet 432 of the internal water inlet channel 430 to provide support for the integrated bracket 500, making the integrated bracket 500 more securely fixed to the bottom 4111 of the electrical receiving groove 411. The bracket water channel inlet 501, embedded in the outlet 432 of the internal water inlet channel 430, facilitates the positioning and installation of the integrated bracket 500 and the electrical receiving groove 411. Furthermore, it improves the sealing of the connection between the outlet 432 of the internal water inlet channel 430 and the bracket water channel inlet 501, preventing cooling water leakage.

[0150] In one embodiment, a sealing ring is used to seal between the support waterway inlet 501 and outlet 432.

[0151] Figure 13 is another exploded view of the vehicle-mounted device 20 provided in an embodiment of this application.

[0152] In one embodiment, as shown in Figures 4 and 10, at least one radiator water channel interface 502 includes a first radiator water channel interface 502a, which is used to connect to the water-cooled radiator 210 of the on-board charger 200. As shown in Figure 4, the first radiator water channel interface 502a is located on the side of the integrated bracket 500 facing the electrical cover 420. As shown in Figures 9 and 11, the bracket water channel inlet 501 is located on the side of the integrated bracket 500 away from the electrical cover 420, and the orientation of the first radiator water channel interface 502a is opposite to the orientation of the bracket water channel inlet 501.

[0153] In this embodiment, the water-cooled radiator 210 of the on-board charger 200 is arranged near the electrical cover plate 420. The first radiator water channel interface 502a is distributed on the side of the integrated bracket 500 facing the electrical cover plate 420, facilitating communication between the first radiator water channel interface 502a and the water-cooled radiator 210 of the on-board charger 200. This allows cooling water from the internal water inlet channel 430 to be transported 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 shown in FIG8, multiple power switching transistors 290 in the on-board charger 200 are supported on the side of the first circuit board 600 facing the electrical cover plate 420, and the water-cooled radiator 210 of the on-board charger 200 is used to cool the multiple power switching transistors 290 in the on-board charger 200.

[0154] In this embodiment, the bracket water channel inlet 501 is located on the side of the integrated bracket 500 away from the electrical cover plate 420, which facilitates the connection between the bracket water channel inlet 501 and the outlet 432 of the internal water inlet channel 430.

[0155] In this embodiment of the application, as shown in Figures 7, 9 and 10, the orientation of the first radiator water channel interface 502a is opposite to that of the bracket water channel inlet 501, so that the cooling water from the vehicle cooling system can flow smoothly 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.

[0156] In one embodiment, as shown in Figures 4, 10 and 13, the integrated bracket 500 includes a support column 560. As shown in Figure 10, the support column 560 protrudes from the side of the integrated bracket 500 facing the electrical cover plate 420. The end face of the support column 560 facing the electrical cover plate 420 includes a groove 561. As shown in Figure 13, the groove 561 is used to fix the water-cooled radiator 210 of the on-board charger 200. The first circuit board 600 is arranged between the water-cooled radiator 210 of the on-board charger 200 and the integrated bracket 500.

[0157] In this embodiment, the support column 560 protrudes from the integrated bracket 500 on the side facing the electrical cover plate 420, so that the support column 560 can support the water-cooled radiator, so that the weight 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.

[0158] In this embodiment, the end face of the support column 560 facing the electrical cover plate 420 includes a groove 561. 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, simplifying the assembly process.

[0159] In this embodiment, the first circuit board 600 is arranged between the water-cooled radiator 210 and the integrated bracket 500 of the on-board charger 200, so that the electrical components of the on-board charger 200 can be arranged between the water-cooled radiator 210 and the internal flow channel 570 of the integrated bracket 500 (as shown in FIG. 16). This allows the cooling water in the water-cooled radiator 210 and the internal flow channel 570 of the integrated bracket 500 of the on-board charger 200 to simultaneously cool the electrical components of the on-board charger 200, thereby improving the cooling efficiency of the on-board charger 200 and thus improving the cooling efficiency of the on-board device 20.

[0160] In one embodiment, as shown in Figures 10 and 13, a first radiator water channel interface 502a is distributed at the bottom of the groove 561. The inlet 211 and outlet 212 of the water-cooled radiator 210 of the on-board charger 200 are 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.

[0161] In this embodiment, the first radiator water channel interface 502a is distributed at the bottom of the groove 561. The inlet 211 and outlet 212 of the water-cooled radiator 210 of the on-board charger 200 are embedded in the groove 561. 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 enter the inlet 211 of the water-cooled radiator 210 of the on-board charger 200 through 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 inside the water-cooled radiator 210 of the on-board charger 200 can dissipate heat from the electrical components of the on-board charger 200, thereby ensuring the normal operation of the on-board device 20.

[0162] Figure 14 is another schematic diagram of the integrated bracket 500 provided in the embodiment of this application, Figure 15 is a cross-sectional view of the integrated bracket 500 in Figure 14 along AA, and Figure 16 is another exploded view of the vehicle-mounted device 20 provided in the embodiment of this application.

[0163] In one embodiment, as shown in Figures 13 to 16, 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 inlet 501 and the radiator water inlet interface 5021. 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. 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.

[0164] In this embodiment, 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 sequentially 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 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 outlet 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 outlet 5022, and the second internal flow channel 572 into the inlet 111 of the water-cooled radiator 110 of the motor controller 100. This allows the water-cooled radiator 110 of the motor controller 100 to cool down the electrical components of the motor controller 100. It also realizes 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, making the integration of the on-board device 20 higher.

[0165] In this embodiment, 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 by the support column 560, and also so that the first internal flow channel 571 and the second internal flow channel 572 can cool down the electrical components of the on-board charger 200 installed and fixed on the integrated bracket 500. The first internal flow channel 571 and the second internal flow channel 572 penetrate the support column 560 along the Z-direction of the stacking of the electrical cover plate 420 and the electrical receiving groove 411. This facilitates the machining of the first internal flow channel 571 and the second internal flow channel 572 in the support column 560, and also allows for shorter flow channel lengths. This is beneficial for the cooling water in the internal water inlet channel 430 of the integrated housing 410 to quickly enter the water-cooled radiator 210 of the on-board charger 200 from the first internal flow channel 571, thereby cooling the electrical components of the on-board charger 200. It also facilitates the rapid delivery of cooling water from the water-cooled radiator 210 of the on-board charger 200 to the water-cooled radiator 110 of the motor controller 100, thus accelerating the cooling efficiency.

[0166] In one embodiment, as shown in Figures 15 and 16, the integrated bracket 500 further 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 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 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. 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.

[0167] In this embodiment, the cooling grooves 580 are distributed on the side of the integrated bracket 500 away from the electrical cover plate 420, so that the distribution of the cooling grooves 580 will not interfere with the arrangement of the electrical components of the on-board charger 200 and the electrical components of the motor controller 100.

[0168] In this embodiment of the application, as shown in Figures 13 to 16, the bracket water channel inlet 501 is distributed on the cooling cover plate 590. 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 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 of the water-cooled radiator 210 of the on-board charger 200 and flowing to the second connecting hole 5812 can flow through the third internal flow channel 573 to the inlet 111 of the water-cooled radiator 110 of the motor controller 100. 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 channels in the on-board device 20 are higher.

[0169] In this embodiment of the application, as shown in FIG12, the third internal flow channel 573 is located at the bottom of the integrated bracket 500. The third internal flow channel 573 is used to cool the multiple capacitors 280, multiple inductors 270 and multiple transformers 260 of the on-board charger 200.

[0170] In one embodiment, as shown in FIG16, the bottom 581 of the cooling tank 580 further 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. The projection of the Z-bracket water channel inlet 501 along the stacking direction of the electrical cover plate 420 and the electrical receiving groove 411 is located on the side of the second dividing protrusion 5814 facing the first connecting hole 5811.

[0171] In this embodiment of the application, as shown in Figures 15 and 16, 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 will not flow in parallel, so that cooling water can flow from the first internal flow channel 571 into the water-cooled radiator 210 of the on-board charger 200. As shown in Figures 13 to 16, 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, so that a portion 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 through the first connecting hole 5811, and then into the water-cooled radiator 210 of the on-board charger 200 to cool the electrical components of the on-board charger 200. After cooling the electrical components of the on-board charger 200, the water flows out from the water-cooled radiator 210 of the on-board charger 200, flows through the second internal flow channel 572 and the third internal flow channel 573, and then 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 the cooling water flowing into the integrated bracket 500 from the bracket water channel inlet 501 to flow directly into the water-cooled radiator 110 of the motor controller 100 through the third internal flow channel 573, thereby cooling down the electrical components of the motor controller 100. This achieves the splitting and parallel flow of cooling water output from the internal water inlet channel 430 to the bracket water channel inlet 501, which can improve the cooling efficiency of the vehicle-mounted device 20.

[0172] In this embodiment, the projection of the Z-bracket water channel inlet 501 along the stacking direction of the electrical cover plate 420 and the electrical receiving groove 411 is located on the side of the second dividing 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 flow directly away from the third internal flow channel 573, that is, the water-cooled radiator 210 of the on-board charger 200 will not be without cooling water flowing through it, 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.

[0173] In one embodiment, as shown in FIG16, the second partition protrusion 5814 has a throttling effect, which makes the amount of cooling water flowing from the first connecting hole 5811 of the bracket water channel inlet 501 into the first internal flow channel 571 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 device 20.

[0174] In one embodiment, as shown in FIG16, the bottom 581 of the cooling tank 580 further includes a plurality of heat dissipation teeth 5815 and a plurality of flow guiding teeth 5816. The plurality of heat dissipation teeth 5815 are distributed on both sides of the first separating protrusion 5813, and the plurality of flow guiding teeth 5816 are also distributed on both sides of the first separating protrusion 5813. At least one of the flow guiding teeth 5816 or heat dissipation teeth 5815 on both sides of the first separating protrusion 5813 may have different numbers, shapes, or arrangements.

[0175] In this embodiment, the bottom 581 of the cooling tank 580 further includes multiple heat dissipation teeth 5815 and multiple 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 multiple heat dissipation teeth 5815 are distributed on both sides of the first partition protrusion 5813, and the multiple flow guide teeth 5816 are distributed on both sides of the first partition protrusion 5813, as shown in Figures 13 to 16. This allows the cooling water flowing directly into the third internal flow channel 573 from the bracket water channel inlet 501 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 to have a larger heat dissipation area with the bottom 581 of the cooling tank 580, which is beneficial to improving the cooling efficiency of the electrical components of the on-board charger 200 in the integrated bracket 500.

[0176] In this embodiment, at least one of the flow guide teeth 5816 or heat dissipation teeth 5815 on both sides of the first dividing protrusion 5813 is different in number, shape or arrangement, which can enhance the flow guiding and stirring effect of the heat dissipation teeth 5815 and the flow 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 down the electrical components of the on-board charger 200.

[0177] In one embodiment, as shown in Figures 13 to 16, the bottom 581 of the cooling tank 580 can be divided into a first channel 581a and a second channel 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 581a is used to form one third internal sub-flow channel 5731, and the second channel 581b is used for the other third internal sub-flow channel 5732. One third internal sub-flow channel 5731 is used to receive cooling water directly supplied from the bracket water inlet 501 to the water-cooled radiator 110 of the motor controller 100. The other third internal sub-flow channel 5732 is used to receive cooling water output from the second connecting hole 5812 flowing through the water-cooled radiator 210 of the on-board charger 200, so that the third internal flow channels 573 can flow in parallel, which is more conducive to cooling down the electrical components of the on-board charger 200.

[0178] In one embodiment, as shown in Figures 14 and 16, at least one radiator water channel interface 502 further includes a second radiator water channel interface 502b, which is used to connect to the water-cooled 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-cooled radiator 210 of the on-board charger 200 or the water channel inlet 501 of the bracket through the internal flow channel 570 of the integrated bracket 500.

[0179] In this embodiment, the second radiator water channel interface 502b is used to connect to the water-cooled 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-cooled radiator 210 or the water channel inlet 501 of the on-board charger 200 through the internal flow channel 570 of the integrated bracket 500. When the second radiator water channel interface 502b receives 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... 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.

[0180] In one embodiment, as shown in FIG16, 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 orientation of the second radiator water channel interface 502b is opposite to the orientation of the bracket water channel inlet 501, while 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. 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.

[0181] In this embodiment of the 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, thereby cooling down the electrical components of the motor controller 100.

[0182] In this embodiment, the orientation of the second radiator water channel interface 502b is opposite to that 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 that of the bracket water channel inlet 501. This arrangement makes the orientation of the second radiator water channel interface 502b opposite to that of the inlet 111 of the water-cooled radiator 110 of the motor controller 100, facilitating the input of cooling water from the second radiator water channel interface 502b to the inlet 111 of the water-cooled radiator 110 of the motor controller 100.

[0183] In this embodiment, the inlet 111 of the water-cooled radiator 110 of the motor controller 100 is embedded in the second radiator water channel interface 502b, which facilitates the positioning and installation of the water-cooled radiator 110 of the motor controller 100 and the integrated bracket 500, and also improves the sealing of 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, thus preventing cooling water leakage.

[0184] In one embodiment, as shown in Figures 10 and 12, the integrated bracket 500 includes a support arm 5100. 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-cooled 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-cooled radiator 110 of the motor controller 100. The second radiator water channel interface 502b is located at the end of the support arm 5100 away from the first shielding wall 521. The second radiator water channel interface 502b protrudes away from the bottom 4111 of the electrical receiving groove 411 along the stacking direction Z of the electrical cover plate 420 and the electrical receiving groove 411.

[0185] In this embodiment, 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-cooled radiator 110 of the motor controller 100, so that the bus capacitor 120 of the motor controller 100 and the water-cooled radiator 110 of the motor controller 100 are fixed with the electrical components of the on-board charger 200 on the same bracket, thereby improving the structural strength of the on-board device 20.

[0186] In this embodiment, 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-cooled radiator 110 of the motor controller 100. This fully utilizes the space between the support arm 5100 and the first shielding wall 521, and prevents the bus capacitor 120 of the motor controller 100 from excessively occupying the 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 beneficial for the miniaturization of the vehicle-mounted device 20. In this embodiment, the space between the support arm 5100 and the first shielding wall 521 is used to form a clearance hole 530.

[0187] In this embodiment, the second radiator water channel interface 502b is located at the 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 receiving groove 411 along the stacking direction Z of the electrical cover plate 420 and the electrical receiving groove 411, so that the second radiator water channel interface 502b can not only connect 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 to the integrated bracket 500.

[0188] In one embodiment, as shown in Figures 12 and 16, the cooling tank 580 further includes a connecting channel 581c, which is located on the support arm 5100. The connecting channel 581c is connected to the second radiator water channel interface 502b. The connecting channel 581c receives cooling water from the first channel 581a and the second channel 581b. The cooling water in the connecting channel 581c can cool the bus capacitor 120 of the motor controller 100.

[0189] In one embodiment, as shown in Figures 10 and 12, the support arm 5100 is used to divide the first shielding wall 521 into two adjacent parts 5211 and 5212 along the opening direction Y of the first mounting hole 4113. The space between the support arm 5100 and one 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 one 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 directions of the bus capacitor 120 of the motor controller 100 and the water-cooled radiator 110 of the motor controller 100 are the same as the opening direction Y of the first mounting hole 4113.

[0190] In this embodiment, the support arm 5100 is used to divide 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 extends from the first shielding wall 521 at 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 have greater strength in the integrated bracket 500, which is beneficial to make the integrated bracket 500 more stable in fixing the bus capacitor 120 of the motor controller 100 and the water-cooled radiator 110 of the motor controller 100.

[0191] In this embodiment, because the bus capacitor 120 of the motor controller 100 is relatively large, a large space is required to house it. The length of 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 smaller, resulting in a smaller overall length of the integrated bracket 500 along the arrangement direction X of the first shielding wall 521 and the second shielding wall 522. By setting a larger length of one of the two parts 5211 and 5212 along the opening direction Y of the first mounting hole 4113, the integrated bracket 500 can still have a larger space between the support arm 5100 and the part of the two parts 5211 and 5212 of the first shielding wall 521 when the length of the integrated bracket 500 along the arrangement direction X of the first shielding wall 521 and the second shielding wall 522 is smaller, so as to accommodate the bus capacitor 120 of the motor controller 100 and the water-cooled radiator 110 of the motor controller 100. It is also convenient to install and fix the integrated bracket 500 to the bottom 4111 of the electrical receiving groove 411.

[0192] In this embodiment, 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. This makes the length direction of the bus capacitor 120 and the water-cooled radiator 110 of the motor controller 100 aligned with the length direction of the longer part of the two parts 5211 and 5212 of the first shielding wall 521. This ensures that the bus capacitor 120 and the water-cooled radiator 110 of the motor controller 100 do not occupy too much space in the integrated bracket 500 outside the arrangement direction X of the first shielding wall 521 and the second shielding wall 522 and the opening direction Y of the first mounting hole 4113, so that the layout of the components in the vehicle device 20 has a smaller volume.

[0193] In one embodiment, as shown in Figures 7 and 16, the integrated housing 410 further includes an internal water outlet channel 440. The inlet 441 of the internal water outlet channel 440 is used to receive cooling water discharged from the outlet 112 of the water-cooled radiator 110 of the motor controller 100. The inlet 441 of the internal water outlet channel 440 is located at the bottom 4111 of the electrical receiving groove 411, and the outlet 442 of the internal water outlet channel 440 is located outside 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 and outlet of the water-cooled radiator 110 of the motor controller 100 is the same. The outlet 112 of the water-cooled radiator 110 of the motor controller 100 is embedded in the inlet 441 of the internal water outlet channel 440.

[0194] In this embodiment of the 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 whole vehicle cooling system can flow back to the whole vehicle cooling system after flowing through the vehicle device 20, forming a recycling of cooling water.

[0195] In this embodiment, the inlet 441 of the internal water outlet channel 440 is located at the bottom 4111 of the electrical receiving groove 411, so that the inlet 441 of the internal water outlet channel 440 can communicate with the outlet 112 of the water-cooled radiator 110 of the motor controller 100 arranged in the electrical receiving groove 411. The outlet 442 of the internal water outlet channel 440 is located outside the electrical receiving groove 411, so that the cooling water in the water-cooled radiator 110 of the motor controller 100 can be discharged outside the integrated housing 410, and it is also convenient for the outlet 442 of the internal water outlet channel 440 to communicate with the external cooling pipe, so that the cooling water can flow back to the vehicle cooling system.

[0196] In this embodiment, 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. The orientations of the inlet 111 and outlet of the water-cooled radiator 110 of the motor controller 100 are the same, allowing the inlet 111 and outlet of the water-cooled radiator 110 of the motor controller 100 to be arranged opposite 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 cooling water can flow smoothly through the water-cooled radiator 110 of the motor controller 100. Furthermore, the outlet 112 of the water-cooled radiator 110 of the motor controller 100 is embedded in the inlet 441 of the internal water outlet channel 440, facilitating the positioning and installation of the water-cooled radiator 110 of the motor controller 100 with the integrated bracket 500 and the integrated housing 410, and facilitating the assembly and replacement of the water-cooled radiator 110 of the motor controller 100.

[0197] In this embodiment, as shown in FIG7, the internal water inlet channel 430 of the integrated housing 410 is used to supply cooling water to the integrated bracket 500. The integrated bracket 500 supplies 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 then transported through the integrated bracket 500. The water outlet channel 440 inside the housing 410 discharges the vehicle-mounted device 20. This allows the integrated bracket 500 to fix the vehicle-mounted charger 200 and the motor controller 100 into an integrated module 20a. It can also cool and dissipate heat from the electrical components of the vehicle-mounted charger 200 and the motor controller 100. This not only improves the integration of the electrical components of the vehicle-mounted charger 200 and the motor controller 100, but also improves the ease of installation of the structural components of the vehicle-mounted device 20 and enhances the cooling and heat dissipation effect of the vehicle-mounted device 20.

[0198] Figure 17 is a schematic diagram of an integrated housing 410 provided in another embodiment of this application, and Figure 18 is another schematic diagram of an integrated housing 410 provided in another embodiment of this application.

[0199] In one embodiment, as shown in Figures 3, 5, and 17, the vehicle-mounted device 20 further includes a drive motor 22 and a reducer 23. The housing 400 of the vehicle-mounted device 20 also includes a motor end cover 450 and a reducer end cover 460. The integrated housing 410 further includes a motor receiving slot 412 and a reducer receiving slot 413. The motor receiving slot 412 is used to fix and receive the stator of the drive motor 22. The motor end cover 450 is used to enclose the motor receiving slot 412. The reducer receiving slot 413 is used to receive the gear set of the reducer 23. The reducer end cover 460 is used to enclose the reducer receiving slot 413. As shown in Figure 17, 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 slot opening orientation of the motor receiving slot 412 is opposite to the slot opening orientation of the reducer receiving slot 413. The orientation of the slot opening 4112 of the electrical receiving slot 411 is perpendicular to the slot opening orientation of the motor receiving slot 412 and the slot opening orientation of the reducer receiving slot 413. As shown in Figure 17, the walls of the electrical receiving slot 411 include a first slot wall 4116, a second slot wall 4117, a third slot wall 4118, and a fourth slot wall 4119. The first slot wall 4116 and the second slot wall 4117 are arranged opposite each other along the axial direction Y of the drive motor 22, and the third slot wall 4118 and the fourth slot wall 4119 are arranged opposite each other along the axial direction Y perpendicular to the drive motor 22. The distance between the first slot wall 4116 and the slot opening of the motor receiving slot 412 is greater than the distance between the second slot wall 4117 and the slot opening of the motor receiving slot 412. The distance between the third slot wall 4118 and the drive motor receiving slot 412 is greater than the distance between the third slot wall 4118 and the slot opening of the motor receiving slot 412. The distance between the motor shafts of motor 22 is less than the distance between the fourth groove wall 4119 and the motor shaft of drive motor 22, as shown in Figures 5 and 17. The power battery interface 204 and the load power supply interface of vehicle device 20 are distributed on the first groove wall 4116, as shown in Figure 18. The three-phase copper discharge hole 4120 of vehicle device 20 is distributed on the second groove wall 4117, as shown in Figure 7. 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.

[0200] In this embodiment of the application, as shown in Figures 6 and 18, the third groove wall 4118 and the fourth groove wall 4119 are arranged opposite 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 outside of the fourth groove wall 4119. This allows the cooling water entering the internal flow channel 570 of the integrated bracket 500, the water-cooled radiator 210 of the on-board charger 200, and the water-cooled radiator 110 of the motor controller 100 from the inlet 431 of the internal water inlet channel 430, and finally flowing out from the outlet 442 of the internal water outlet channel 440, to have a longer flow path. This is beneficial for the internal flow channel 570 of the integrated bracket 500, the water-cooled radiator 210 of the on-board charger 200, and the water-cooled radiator 110 of the motor controller 100 to dissipate heat from the electrical components of the on-board charger 200 and the motor controller 100, thereby improving the cooling efficiency of the on-board device 20.

[0201] In this embodiment, the electrical components of the on-board charger 200 in the vehicle device 20 are stacked on the drive motor 22. The inlet 431 of the internal water inlet channel 430 is distributed on the outside 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 flows quickly 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 dissipate heat from the on-board charger 200. Furthermore, the third internal flow channel 573 at the bottom of the integrated bracket 500 is also stacked on the drive motor 22, which can also cool the drive motor 22, thereby improving the cooling effect of the vehicle device 20.

[0202] In this embodiment, the outlet 442 of the internal water outlet channel 440 is arranged near the fourth groove wall 4119 of the reducer 23. The electrical components of the motor controller 100 in the vehicle 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. It also allows the outlet 442 of the internal water outlet channel 440, which is connected to the water-cooled radiator 110 of the motor controller 100, to 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. This makes the structure of the vehicle device 20 compact and is conducive to the miniaturization of the vehicle device 20.

[0203] In this embodiment, as shown in FIG6, the first slot wall 4116 and the second slot wall 4117 are arranged opposite each other along the axial direction Y of the drive motor 22. The power battery interface 204 and the load power supply interface of the vehicle device 20 are distributed in the first slot wall 4116, wherein the load power supply interface is the second connector 202, which is used to connect to the compressor. As shown in FIG18, the three-phase copper output wire hole 4120 of the vehicle device 20 is distributed in the second slot wall 4117, which allows the current input from the power battery 10 into the vehicle charger 200 to be output more smoothly from the three-phase output copper busbar 130 through the three-phase copper output wire hole 4120 to the stator winding of the drive motor 22, thereby driving the drive motor 22. The fact that the power battery interface 204 and the load power supply interface of the vehicle device 20 are both distributed in the first slot wall 4116 makes it easier for the vehicle charger 200 to quickly power the load of the vehicle device 20 through the load power supply interface.

[0204] In this embodiment, the power battery interface 204 and the load power supply interface of the vehicle device 20 are distributed on the first groove wall 4116, the three-phase copper discharge hole 4120 of the vehicle 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, making the opening of the electrical receiving groove 411 more reasonable and regular.

[0205] In one embodiment, as shown in Figures 5, 6, 17, and 18, a first mounting hole 4113 and a second mounting hole 4114 are located in a first groove wall 4116. A first connector 201 installed in the first mounting hole 4113 passes through the first groove wall 4116, and a second connector 202 installed in the second mounting hole 4114 passes through the first groove wall 4116. A third mounting hole 4115 is located in a second groove wall 4117, and a third connector 203 installed in the third mounting hole 4115 passes through the second groove wall 4117. The first connector 201 is plugged into a power battery interface 204, the second connector 202 is plugged into a load power supply interface of the vehicle-mounted device 20, and the third connector 203 is plugged into a 12V low-voltage load interface.

[0206] In one embodiment, as shown in FIG17, the communication connector mounting hole 4121 of the vehicle controller 300 penetrates the bottom 4111 of the electrical receiving slot 4111. This ensures that the communication connector connected to the vehicle controller 300 does not occupy additional space in 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 beneficial to the miniaturization of the vehicle-mounted device 20. It also allows the communication connector cable to pass through the bottom 4111 of the electrical receiving slot 4111, making the wiring of the vehicle-mounted device 20 more aesthetically pleasing.

[0207] The above provides a detailed description of the water-cooled heat dissipation vehicle device and electric vehicle provided in the embodiments of this application. Specific examples have been used to illustrate the principles and embodiments of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in specific embodiments and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A water-cooled heat dissipation vehicle-mounted device, characterized in that, The vehicle-mounted device includes at least one of an on-board 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 encloses the electrical receiving slot. The inlet of the internal water inlet channel is located outside the slot of the electrical receiving slot, and the outlet of the internal water inlet channel is located 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 being used to carry an electrical component of at least one of the on-board charger or the motor controller, and the integrated bracket being 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 of the radiator water channel interfaces is used to supply cooling water to at least one of the water-cooled radiators 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 outlets of the internal water inlet channels are located at the bottom of the electrical receiving tank, and the support waterway inlet is used to connect to the outlets of the internal water inlet channels, wherein: The outlet of the internal water inlet channel faces the same direction as the opening of the electrical receiving tank, while the inlet of the support waterway faces the opposite direction to the opening of the electrical receiving tank.

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 receiving tank, and the bracket water 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 1-3, characterized in that, The at least one radiator water channel interface includes a first radiator water channel interface, which is used to connect to the water-cooled radiator of the on-board charger, wherein: The first radiator water channel interface is located on the side of the integrated bracket facing the electrical cover plate, and the bracket water channel inlet is located on the side of the integrated bracket away from the electrical cover plate. The orientation of the first radiator water channel interface is opposite to the orientation 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 that protrudes from the integrated bracket on the side facing the electrical cover. The end face of the support column facing the electrical cover includes a groove for fixing 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. The inlet and outlet of the water-cooled radiator of the vehicle charger are used to be embedded in the groove. The first radiator water channel interface includes a radiator inlet interface and a radiator outlet interface. The radiator inlet interface is used to connect to the inlet of the water-cooled radiator of the vehicle charger, and the radiator outlet interface is used to connect to the outlet of the water-cooled radiator of the vehicle 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 water inlet of the bracket and the water inlet of the radiator. The second internal flow channel is used to connect the water outlet of the radiator 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 penetrate the support column along the stacking direction of the electrical cover plate and the electrical receiving groove.

8. The vehicle-mounted device according to claim 7, characterized in that, The integrated bracket also includes a cooling tank and a cooling cover plate. The cooling tank 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 tank to form a third internal flow channel. The water channel inlet of the bracket is distributed on the cooling cover plate. The bottom of the cooling tank 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 tank. The first connecting hole is used to connect to the radiator water inlet through the first internal flow channel. The second connecting hole is used to connect to the radiator water outlet 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 tank 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. The projection of the bracket water channel inlet along the stacking direction of the cover plate and the electrical receiving tank 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 tank also includes multiple heat dissipation teeth and multiple airflow guiding teeth, wherein: The plurality of heat dissipation teeth are distributed on both sides of the first dividing protrusion, and the plurality of flow guiding teeth are distributed on both sides of the first dividing protrusion. At least one of the flow guiding teeth or the heat dissipation teeth on both sides of the first dividing protrusion is different in number, shape or arrangement.

11. The vehicle-mounted device according to any one of claims 1-10, characterized in that, The at least one radiator water channel interface further includes a second radiator water channel interface, the second radiator water channel interface being used to connect to the water-cooled 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 water channel inlet of the bracket 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-cooled radiator of the motor controller is used to connect to the water channel interface of the second radiator, wherein: The orientation of the second radiator water channel interface is opposite to that of the bracket water channel inlet, and the orientation of the water-cooled radiator inlet of the motor controller is the same as that of the bracket water channel inlet. The water-cooled radiator inlet 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 also includes an internal water outlet channel, the inlet of which is used to receive cooling water discharged from the outlet of the water-cooled radiator of the motor controller, wherein: The inlet of the internal water outlet channel is located at the bottom of the electrical receiving tank, and the outlet of the internal water outlet channel is located outside the electrical receiving tank. The orientation of the inlet of the internal water outlet channel is the same as the orientation of the water channel interface of the second radiator. The orientation of the inlet and outlet of the water-cooled radiator of the motor controller is the same. 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 drive 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 drive 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. 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 opening orientation of the motor receiving slot is opposite to that of the reducer receiving slot. The opening orientation of the electrical receiving slot is perpendicular to both the motor receiving slot and the reducer receiving slot. The wall of the electrical receiving slot includes a first wall, a second wall, a third wall, and a fourth wall. The first wall and the second wall are arranged opposite each other along the axial direction of the drive motor, and the third wall and the fourth wall are arranged opposite each other perpendicular to the axial direction of the drive motor. The distance between the first groove wall and the opening of the motor receiving groove is greater than the distance between the second groove wall and the opening of the motor receiving groove. The distance between the third groove wall and the motor shaft of the drive motor is less than the distance between the fourth groove wall and the motor shaft of the drive motor. The inlet of the internal water inlet channel is located on the third groove wall. The power battery interface and the load power supply interface of the vehicle device are located on the first groove wall. The three-phase copper discharge line hole of the vehicle device is located on the second groove wall. The outlet of the internal water outlet channel is located on the outside of the fourth groove wall.

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

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