Powertrain and electric vehicle with integrated domain controller arrangement

Abstract

The application provides a power assembly and an electric vehicle of an integrated domain controller arrangement, and relates to the technical field of electric vehicles.The power assembly comprises an integrated shell, the integrated shell comprises a motor shell and an electric control shell, the motor shell is used for forming a motor accommodating groove, the electric control shell is used for forming an electric control accommodating groove, a groove bottom of the electric control accommodating groove and a peripheral wall part of the motor shell are partially overlapped, the integrated shell further comprises a domain control mounting groove used for mounting and fixing a domain controller, the domain control mounting groove is formed by being surrounded by four side walls and the peripheral wall of the motor shell, the domain control mounting groove and the electric control accommodating groove are spaced from each other, a groove bottom of the domain control mounting groove and the peripheral wall of the motor shell are overlapped, a depth of the domain control mounting groove is smaller than a depth of the electric control accommodating groove, and an area of the groove bottom of the domain control mounting groove is smaller than an area of the groove bottom of the electric control accommodating groove.The power assembly provided by the application integrates the domain controller without increasing the outer envelope size of the power assembly, saves the mounting space of the domain controller, and makes the electric vehicle have a higher integration degree.

Description

Technical Field

[0001] This application relates to the field of electric vehicle technology, specifically to powertrains with integrated domain controllers and electric vehicles. Background Technology

[0002] The powertrain is used to rotate the wheels to drive the electric vehicle. Existing domain controllers are mostly independent modules, requiring additional installation space and occupying too much of the electric vehicle's internal space, resulting in low integration. The significant distance between the domain controller and the powertrain also increases communication latency between them. Summary of the Invention

[0003] This application provides a powertrain and an electric vehicle with an integrated domain controller layout. The integrated housing of the powertrain includes a domain controller mounting slot for mounting a fixed domain controller, enabling the domain controller to be integrated into the powertrain without increasing the overall envelope size of the powertrain, saving the installation space required for the domain controller, and resulting in a high degree of integration for the electric vehicle.

[0004] In a first aspect, this application provides a powertrain with an integrated domain controller arrangement. The powertrain includes an integrated housing, which includes an integrally formed motor housing and an electronic control housing. The motor housing forms a motor receiving slot for accommodating a motor, and the electronic control housing forms an electronic control receiving slot for accommodating a motor controller. The bottom of the electronic control receiving slot partially overlaps with the outer peripheral wall of the motor housing. The integrated housing also includes a domain controller mounting slot for mounting and fixing the domain controller. The domain controller mounting slot is formed by four side walls and the outer peripheral wall of the motor housing. The four side walls protrude from the outer peripheral wall of the motor housing in a direction away from the motor receiving slot. The domain controller mounting slot and the electronic control receiving slot are spaced apart from each other. The bottom of the domain controller mounting slot overlaps with the outer peripheral wall of the motor housing. The depth of the domain controller mounting slot is less than the depth of the electronic control receiving slot, and the area of ​​the bottom of the domain controller mounting slot is less than the area of ​​the bottom of the electronic control receiving slot.

[0005] The powertrain provided in this application has an integrally formed motor housing and an electronic control housing. The motor housing forms a motor housing slot to accommodate the motor. The electronic control housing forms an electronic control housing slot to accommodate the motor controller. The motor controller is used for electrical connection to the motor. The motor is used to transmit power to the wheels of the electric vehicle to drive the wheels to rotate.

[0006] The integrated housing for the powertrain provided in this application includes a domain controller mounting slot. The domain controller mounting slot is used to mount and fix the domain controller. The domain controller mounting slot in the integrated housing serves as a reserved mounting interface for the domain controller. The domain controller can be integrated into the powertrain, saving the installation space required for the domain controller and enabling the electric vehicle to have a high degree of integration. The domain controller is integrated into the outer peripheral wall of the motor housing, reducing the distance between the domain controller and the motor controller, which helps to reduce the communication latency between the domain controller and the motor controller.

[0007] The domain controller mounting slot for the powertrain provided in this application is formed by four side walls and the outer peripheral wall of the motor housing. The bottom of the domain controller mounting slot reuses the outer peripheral wall of the motor housing, reducing the material required to enclose the slot and improving the integration of the powertrain. Compared to the electronic control housing slot, the domain controller mounting slot has a smaller depth and a smaller bottom area. The domain controller mounting slot can utilize the radial space of the outer peripheral wall of the motor housing occupied by the electronic control housing slot, ensuring that the arrangement of the domain controller mounting slot does not increase the outer envelope size of the powertrain, thus avoiding an excessively large overall powertrain size due to the integration of the domain controller.

[0008] In one implementation, a domain controller mounting slot is used to fix a slot-shaped domain controller cover plate, the domain controller cover plate is used to cover the opening of the domain controller mounting slot, the bottom of the domain controller cover plate is used to fix a circuit board, and the circuit board and the bottom of the domain controller mounting slot are spaced apart from each other along the arrangement direction of the domain controller mounting slot and the domain controller cover plate.

[0009] In this implementation, the domain controller cover is fixedly connected to the four side walls of the domain controller mounting slot. The slot opening of the slot-shaped domain controller cover communicates with the slot opening of the domain controller mounting slot. The space formed by the domain controller cover and the domain controller mounting slot is used to accommodate the circuit board of the domain controller, thereby protecting the circuit board. The circuit board is fixed to the domain controller cover, making the circuit board integrated into the domain controller cover, which facilitates the installation and fixing of the domain controller in the domain controller mounting slot, thereby improving the installation efficiency of installing and fixing the domain controller to the powertrain. The circuit board is fixed to the bottom of the slot of the slot-shaped domain controller cover, which can also accommodate part of the circuit board, thereby reducing the depth required for the domain controller mounting slot and reducing the manufacturing difficulty of the integrated housing.

[0010] In one implementation, a portion of the bottom of the domain controller cover is recessed in a direction away from the opening of the domain controller cover to form a groove. A circuit board covers the opening of one of the grooves, and the space formed by the circuit board and the groove is used to accommodate the signal connector of the domain controller.

[0011] In this implementation, a portion of the bottom of the slot-shaped domain controller cover is recessed to form a groove. The space enclosed by this groove and the circuit board along the arrangement direction of the domain controller cover and the domain controller mounting slot has a large dimension, thus accommodating the domain controller's signal connector. Since the signal connector is located on the side of the circuit board away from the domain controller mounting slot, it does not need to occupy the internal space of the domain controller mounting slot, resulting in a smaller required depth for the domain controller mounting slot and further reducing the manufacturing difficulty of the integrated housing. The bottom of the groove is formed by the partial recess of the slot-shaped domain controller cover, giving the side of the domain controller cover away from the domain controller mounting slot a larger surface area, which is beneficial for heat dissipation of the electrical components on the circuit board through the domain controller cover.

[0012] In one implementation, the distance between the slot of the domain controller cover and the bottom of a groove is greater than half the depth of the domain controller mounting groove, and the distance between the slot of the domain controller cover and the bottom of the groove is less than half the depth of the domain controller mounting groove.

[0013] In this implementation, the distance between the slot of the domain controller cover and the bottom of a recess is relatively large, ensuring that the domain controller cover has sufficient space to accommodate the domain controller's signal connector. Conversely, the distance between the slot and the bottom of the recess is relatively small, reducing the overall size of the domain controller cover and the space it occupies.

[0014] In one implementation, the area of ​​the slot of the domain controller cover is smaller than the area of ​​the slot of the domain controller mounting slot. The domain controller cover includes a flange that surrounds the outer side of the sidewall of the domain controller cover. The flange is flush with the surface of the domain controller cover facing the domain controller mounting slot. The flange is used to fix and connect the four sidewalls of the domain controller mounting slot.

[0015] In this implementation, a flange is provided on the outer side of the side wall of the domain control cover. The domain control cover is fixedly connected to the four side walls of the domain control mounting slot through the flange, so that the domain control mounting slot with a larger opening can fit with the domain control cover with a smaller opening, thereby reducing the space occupied by the domain control cover and providing more space on the outer peripheral wall of the motor housing for installing other components of the powertrain.

[0016] In one implementation, a sidewall of a recess includes a signal interface mounting hole for fixing a signal connector of a domain controller, the signal connector and a circuit board being electrically connected to the surface of the recess.

[0017] In this implementation, a signal interface mounting hole penetrates one sidewall of a recess. One end of the domain controller's signal connector protrudes to the outside of the recess through the signal interface mounting hole. This end of the signal connector is used for communication with onboard electrical components. The other end of the signal connector is electrically connected to the surface of the circuit board facing the recess, thereby enabling communication between the circuit board's components and the onboard electrical components. The domain controller's signal connector is integrated into the domain controller cover via the signal interface mounting hole, further improving the installation efficiency of mounting and securing the domain controller in the domain controller mounting slot.

[0018] In one implementation, a sidewall of a recess includes two spaced-apart signal interface mounting holes, the arrangement of which intersects the arrangement of the domain controller cover and the domain controller mounting slot. Each signal interface mounting hole is used to fix a signal connector of the domain controller, and each signal connector is electrically connected to the surface of the circuit board facing the recess.

[0019] In this implementation, the circuit board includes a main control circuit and a redundant control circuit. The main control circuit communicates with the vehicle-mounted electrical components via a signal connector. The redundant control circuit communicates with the vehicle-mounted electrical components via another signal connector. The redundant control circuit can replace the main control circuit in communicating with the vehicle-mounted electrical components when the main control circuit fails, thereby ensuring the normal operation of the domain controller and making the domain controller more reliable.

[0020] In addition, each signal connector is fixed to a signal interface mounting hole. The arrangement of the two signal interface mounting holes intersects with the arrangement of the domain controller cover and the domain controller mounting slot, which helps to reduce the depth of one groove, thereby reducing the overall size of the domain controller cover.

[0021] In one implementation, the domain controller cover includes a support protrusion that protrudes from the bottom of a groove toward the opening of the domain controller cover. The support protrusion is used to support and fix a circuit board toward the side of the groove, and the length of the support protrusion is less than the distance between the bottom of the groove and the opening of the domain controller cover.

[0022] In this implementation, the circuit board is fixed to the bottom of the groove in the domain controller cover. Because the bottom of one groove is spaced apart from the circuit board, the circuit board lacks a fixed connection at one groove, resulting in low reliability of the connection between the circuit board and the domain controller cover. Uneven stress on the circuit board can easily cause deformation, which is detrimental to the long-term operation of the domain controller. By supporting and fixing the circuit board to one side of the groove with support protrusions, and by providing fixation at all positions of the circuit board, the reliability of the connection between the circuit board and the domain controller cover is improved.

[0023] Furthermore, the lack of a fixed connection in a recessed area of ​​the circuit board will cause the signal connector to need to support part of the circuit board, which is not conducive to the long-term use of the signal connector. The support protrusion provides support for the circuit board, improves the stress state of the signal connector, and thus extends the service life of the signal connector.

[0024] In one implementation, the side of the circuit board facing away from a groove is used to fix a shielding cover. Along the arrangement direction of the domain controller cover and the domain controller mounting slot, the distance between the shielding cover and the bottom of the domain controller mounting slot is less than the depth of the domain controller mounting slot. The projection of the shielding cover on the bottom of the domain controller cover slot is spaced apart from a groove.

[0025] In this implementation, the shielding cover is fixed to the side of the circuit board opposite to a recess. The shielding cover extends into the domain controller mounting slot along the direction of the domain controller cover and the domain controller mounting slot arrangement, fully utilizing the internal space of the domain controller mounting slot and improving the integration of the domain controller. The shielding cover is used to shield the electrical components on the circuit board, and the shielding cover and the circuit board together form a shielded space, reducing electromagnetic interference to the electrical components on the circuit board from the signal connectors. The projection of the shielding cover onto the bottom of the slot in the domain controller cover is spaced apart from a recess, thus isolating the shielding cover from the signal connectors and further improving the shielding effect against electromagnetic interference.

[0026] In one implementation, the four sidewalls of the domain controller mounting slot include two opposing sidewalls arranged along the arrangement direction of the electrical control receiving slot and the domain controller mounting slot. The surface of the sidewall closest to the electrical control receiving slot includes a through hole through the sidewall for the signal connection line of the domain controller to pass through.

[0027] In this implementation, the two sidewalls of the domain controller mounting slot are arranged along the direction of the electrical control receiving slot and the domain controller mounting slot. A through-hole is provided on the sidewall closer to the electrical control receiving slot. Signal cables can extend into the domain controller mounting slot through the through-hole and electrically connect to the circuit board. The signal cables are used to enable communication between the motor controller and the domain controller. The signal cables are pre-installed on the sidewall of the domain controller mounting slot, reducing the installation steps for the domain controller and facilitating communication between the domain controller and the motor controller. The through-hole is located on the sidewall of the domain controller mounting slot facing the electrical control receiving slot, thereby reducing the length of the signal cables and lowering the communication delay between the motor controller and the domain controller. The through-hole's location within the domain controller mounting slot allows the through-hole and signal connectors to be positioned on opposite sides of the circuit board, which helps reduce electromagnetic interference from the signal connectors to the signal cables.

[0028] In one implementation, one of the two sidewalls, the one closest to the electrical control receiving slot, partially overlaps with the sidewall of the electrical control receiving slot, and a through hole is used to connect the electrical control receiving slot and the domain control mounting slot respectively.

[0029] In this implementation, the domain controller mounting slot and the electrical control housing slot share the same sidewall. Through-holes are used to penetrate this shared sidewall. Because the through-holes directly connect the domain controller mounting slot and the electrical control housing slot, signal cables extend from the electrical control housing slot through the through-holes into the domain controller mounting slot. The signal cables are located inside the electrical control housing or within the domain controller mounting slot, and are not exposed to the outside of the integrated housing, thus protecting the signal cables and extending their service life. The small spacing between the domain controller mounting slot and the electrical control housing slot, which share the same sidewall, requires shorter signal cable lengths, which helps reduce communication latency between the domain controller and the motor controller.

[0030] One implementation involves the through-hole and a groove in the domain controller cover plate being spaced apart along the extension direction of one sidewall where the through-hole is located.

[0031] In this implementation, the through hole and a groove are spaced apart, so that the signal connection line passing through the through hole and the signal connector in the groove are spaced apart, thereby reducing the electromagnetic interference generated by the signal connector to the signal connection line.

[0032] In one implementation, a portion of the shielding cover is located between the through hole and a groove along the extension direction of one sidewall where the through hole is located, and the through hole and the shielding cover partially overlap along the direction in which the domain controller cover plate and the domain controller mounting groove are arranged.

[0033] In this implementation, the gap between the through-hole and the groove can also be used to arrange a shield. The shield is used to partially overlap the through-hole with the shield along the direction of the domain controller cover and the domain controller mounting slot, thereby separating the signal connection line and the signal connector in the extension direction of one sidewall where the through-hole is located, further reducing the electromagnetic interference of the signal connector to the signal connection line, and making the communication between the domain controller and the motor controller more reliable.

[0034] In one implementation, the shield includes a notch extending along the sidewall where the through hole is located, on the side of the shield opposite to a groove, the notch being used to expose a communication interface of the circuit board, the communication interface being used for communication connection with a signal connection line.

[0035] In this implementation, the communication interface of the circuit board is located inside the shielding cover. The shielding cover separates the communication interface from the signal connector, reducing electromagnetic interference from the signal connector to the communication interface. The communication interface is exposed through a notch, facilitating communication between the communication interface and the signal connection line, thereby enabling communication between the circuit board and the motor controller. The notch is located on the side of the shielding cover opposite to a recess, and the distance between the notch and the signal connector is relatively large, thus reducing the impact of the notch on the overall shielding effect of the shielding cover.

[0036] The communication interface is exposed through a notch on the side of the shield that faces away from the recess. That is, compared to the side of the shield facing the recess, the communication interface is closer to the side of the shield that faces away from the recess. This results in a larger distance between the communication interface and the signal connector, reducing electromagnetic interference from the signal connector to the communication interface, and improving the reliability of communication between the circuit board and the motor controller.

[0037] In one implementation, the four sidewalls of the domain controller mounting slot include two third sidewalls, each of which is connected to the two sidewalls respectively. One of the two third sidewalls is flush with the sidewall of a groove in the domain controller cover plate of the domain controller. The distance between the through hole and one of the third sidewalls along the direction of the arrangement of the two third sidewalls is greater than the distance between the through hole and the other of the two third sidewalls.

[0038] In this implementation, each third sidewall is connected to two sidewalls respectively. That is, the four sidewalls are connected sequentially to form a domain control mounting groove with the outer peripheral wall of the motor housing. The larger distance between the through hole and the third sidewall closest to a groove results in a larger distance between the signal connection line and the signal connector, further reducing the electromagnetic interference generated by the signal connector on the signal connection line.

[0039] In one implementation, the lengths of the two sidewalls along their own extension direction are each smaller than the length of the third sidewall along its own extension direction.

[0040] In this implementation, the small spacing between the two third sidewalls of the domain controller mounting slot allows the domain controller to have more space to accommodate other powertrain components. These other powertrain components can also utilize the radial space of the outer peripheral wall of the motor housing occupied by the electronic control housing, without increasing the overall size of the powertrain and improving its integration.

[0041] In one implementation, the four side walls of the domain control mounting slot are integrally formed with the outer peripheral wall of the motor housing.

[0042] In this implementation, the four side walls of the domain controller mounting slot are integrally formed with the motor housing, eliminating the need for additional installation of the four side walls and improving powertrain assembly efficiency. The integrally formed domain controller mounting slot also provides high structural strength, resulting in a highly reliable connection between the domain controller and the powertrain.

[0043] In one implementation, the projections of the four sidewalls of the domain controller mounting slot along the arrangement direction of the domain controller mounting slot and the electrical control receiving slot are located within the electrical control housing.

[0044] In this embodiment, the projections of all four sidewalls of the domain control mounting slot are located within the electrical control housing. That is, the dimensions of the two opposite sidewalls of the domain control mounting slot along the direction in which the domain control mounting slot and the electrical control receiving slot are smaller along their own extension direction. The space occupied by the domain control mounting slot on the outer peripheral wall of the motor housing is smaller, allowing the outer peripheral wall of the motor housing to have more space to install other components of the powertrain.

[0045] In one implementation, the powertrain includes a heat exchanger fixed to the outer peripheral wall of the motor housing, and the arrangement direction of the heat exchanger intersects the arrangement direction of the domain control mounting slot and the electrical control receiving slot.

[0046] In this embodiment, the outer peripheral wall of the motor housing is also used to fix the heat exchanger. The arrangement direction of the heat exchanger and the domain control mounting slot intersects the arrangement direction of the domain control mounting slot and the electrical control receiving slot, which can reduce the single-directional space required to arrange the heat exchanger on the outer peripheral wall of the motor housing.

[0047] In one implementation, the heat exchanger and the domain control mounting slot overlap with the electrical control receiving slot, respectively, along the arrangement direction of the heat exchanger and the domain control mounting slot.

[0048] In this embodiment, the heat exchanger and the domain control mounting slot make full use of the space on the outer peripheral wall of the motor housing occupied by the electronic control housing, without increasing the outer envelope size of the powertrain, thereby improving the integration of the powertrain.

[0049] In one implementation, the powertrain includes a charging and distribution device, which is fixed to the outer peripheral wall of the motor housing. The arrangement direction of the charging and distribution device intersects the arrangement direction of the domain control mounting slot and the electrical control receiving slot.

[0050] In this embodiment, the outer peripheral wall of the motor housing is also used to fix the charging and distribution device. The arrangement direction of the charging and distribution device and the domain control mounting slot intersects the arrangement direction of the domain control mounting slot and the electrical control receiving slot, which can reduce the single-directional space required to arrange the charging and distribution device on the outer peripheral wall of the motor housing.

[0051] In one implementation, the charging and distribution device and the domain controller mounting slot overlap with the electrical control receiving slot, respectively, along the arrangement direction of the charging and distribution device and the domain controller mounting slot.

[0052] In this embodiment, the charging and distribution device and the domain control mounting slot make full use of the space occupied by the electric control housing on the outer peripheral wall of the motor housing, without increasing the outer envelope size of the powertrain, thereby improving the integration of the powertrain.

[0053] Secondly, this application provides an electric vehicle. The electric vehicle includes wheels, a frame, and a powertrain provided in any of the above implementations. The powertrain is fixed to the frame and is used for transmission connection with the wheels and for driving the wheels to rotate.

[0054] The electric vehicle provided in this application uses a powertrain with an integrated domain controller as described above. The domain controller makes full use of the radial space on the outer peripheral wall of the motor housing occupied by the electronic control housing. The domain controller can be integrated into the powertrain without increasing the outer envelope size of the powertrain, saving the installation space required for the domain controller and making the electric vehicle have a high degree of integration. Attached Figure Description

[0055] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0056] Figure 1 This is a schematic diagram of the external structure of an electric vehicle provided in one embodiment of this application; Figure 2 This is a partial structural diagram of an electric vehicle provided in one embodiment of this application; Figure 3 This is a schematic diagram of another part of the structure of an electric vehicle provided in one embodiment of this application; Figure 4 A schematic diagram of a partial structure of a powertrain provided in one embodiment of this application; Figure 5 This is a schematic diagram of another part of the powertrain provided in one embodiment of this application; Figure 6 This is a partially exploded structural diagram of an electric vehicle provided in one embodiment of this application; Figure 7 This is a schematic diagram of a partial communication structure of an electric vehicle provided in one embodiment of this application; Figure 8 This is a partial cross-sectional structural diagram of an electric vehicle provided in one embodiment of this application; Figure 9 This is a schematic diagram of another part of the structure of an electric vehicle provided in one embodiment of this application; Figure 10 This is a schematic diagram of another part of the structure of an electric vehicle provided in one embodiment of this application; Figure 11 This is a schematic cross-sectional view of another part of the electric vehicle provided in one embodiment of this application; Figure 12 This is a schematic diagram of a domain control cover provided in one embodiment of this application; Figure 13 This is a schematic diagram of another part of the powertrain provided in one embodiment of this application; Figure 14 This is a schematic cross-sectional view of another part of the electric vehicle provided in one embodiment of this application; Figure 15 This is a schematic cross-sectional view of another part of the electric vehicle provided in one embodiment of this application; Figure 16 This is a schematic diagram of another part of the powertrain provided in one embodiment of this application; Figure 17 This is a schematic diagram of another part of the structure of an electric vehicle provided in one embodiment of this application. Detailed Implementation

[0057] The technical solutions of the embodiments of this application will now be described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0058] This application provides a powertrain with an integrated domain controller arrangement. The powertrain includes an integrated housing, which includes an integrally formed motor housing and an electronic control housing. The motor housing forms a motor housing slot for accommodating the motor, and the electronic control housing forms an electronic control housing slot for accommodating the motor controller. The bottom of the electronic control housing slot partially overlaps with the outer peripheral wall of the motor housing. The integrated housing also includes a domain controller mounting slot for mounting and fixing the domain controller. The domain controller mounting slot is formed by four side walls and the outer peripheral wall of the motor housing. The four side walls protrude from the outer peripheral wall of the motor housing in a direction away from the motor housing slot. The domain controller mounting slot and the electronic control housing slot are spaced apart from each other. The bottom of the domain controller mounting slot overlaps with the outer peripheral wall of the motor housing. The depth of the domain controller mounting slot is less than the depth of the electronic control housing slot, and the area of ​​the bottom of the domain controller mounting slot is less than the area of ​​the bottom of the electronic control housing slot.

[0059] The integrated housing for the powertrain provided in this application includes a domain controller mounting slot. The domain controller mounting slot is used to mount and fix the domain controller. The domain controller mounting slot in the integrated housing serves as a reserved mounting interface for the domain controller. The domain controller can be integrated into the powertrain, saving the installation space required for the domain controller and enabling the electric vehicle to have a high degree of integration. The domain controller is integrated into the outer peripheral wall of the motor housing, reducing the distance between the domain controller and the motor controller, which helps to reduce the communication latency between the domain controller and the motor controller.

[0060] The domain controller mounting slot for the powertrain provided in this application is formed by four side walls and the outer peripheral wall of the motor housing. The bottom of the domain controller mounting slot reuses the outer peripheral wall of the motor housing, reducing the material required to enclose the domain controller mounting slot and improving the integration of the powertrain. Compared to the electronic control housing slot, the domain controller mounting slot has a smaller depth and a smaller bottom area. The domain controller mounting slot can utilize the radial space of the outer peripheral wall of the motor housing occupied by the electronic control housing slot, ensuring that the arrangement of the domain controller mounting slot does not increase the outer envelope size of the powertrain, thus avoiding an excessively large overall powertrain size due to the integration of the domain controller.

[0061] This application provides an electric vehicle. The electric vehicle includes wheels, a frame, and a powertrain provided by any of the above implementations. The powertrain is fixed to the frame and is used for transmission connection with the wheels and for driving the wheels to rotate.

[0062] Please see Figure 1 This is a schematic diagram of the external structure of an electric vehicle 200 provided in one embodiment of this application.

[0063] like Figure 1 As shown, the electric vehicle 200 provided in this embodiment includes a frame 210, wheels 220, and a powertrain 100. The powertrain 100 is fixed to the frame 210. The powertrain 100 is used for transmission connection with the wheels 220. The powertrain 100 is used to drive the wheels 220 to rotate, thereby moving the frame 210 and driving the electric vehicle 200. The powertrain 100 is the powertrain provided concurrently in this embodiment.

[0064] In one embodiment, such as Figure 1 As shown, the powertrain 100 is used for transmission connection with the wheels 220 of the electric vehicle 200 to drive the wheels 220 to rotate. The wheels 220 are the rear wheels of the electric vehicle 200. In other embodiments, the powertrain can also be used for transmission connection with the front wheels of the electric vehicle 200 to drive the front wheels to rotate; this embodiment of the present application does not particularly limit this.

[0065] In one embodiment, the electric vehicle 200 also includes a power battery 230. The power battery 230 is fixed to the frame 210. The power battery 230 is used to supply power to the powertrain 100.

[0066] Please see Figures 2-4 ,in Figure 2 This illustration shows a partial structural diagram of an electric vehicle 200 provided in one embodiment of this application; Figure 3 This illustration shows another partial structural diagram of an electric vehicle 200 provided in one embodiment of this application; Figure 4 This illustration shows a partial structural diagram of a powertrain 100 provided in one embodiment of this application.

[0067] like Figure 2 and Figure 3 As shown, the powertrain 100 provided in this embodiment includes an integrated housing 10 and a motor 20. The integrated housing 10 includes a motor housing 11. The motor housing 11 is used to enclose a motor receiving slot 111. The motor receiving slot 111 is used to receive the motor 20.

[0068] In one embodiment, such as Figure 2 and Figure 3 As shown, the motor housing 11 is cylindrical. The motor housing 11 includes a cylindrical wall and a cylindrical bottom. An opening is formed at each of the opposite ends of the cylindrical wall along its axial direction. The cylindrical bottom is used to cover one of the openings in the cylindrical wall and for fixed connection with the cylindrical wall. The cylindrical wall and the cylindrical bottom together form a motor receiving groove 111.

[0069] In one embodiment, such as Figure 4 As shown, the motor 20 includes a stator 21, a rotor 22, and a motor shaft 23. The stator 21, rotor 22, and motor shaft 23 are all located within the motor housing 111. The rotor 22 is coaxially fixed to the outside of the motor shaft 23. The stator 21 includes a stator core 211 and a stator winding 212. The stator core 211 is sleeved on the outside of the rotor 22. The stator winding 212 is wound around the stator core 211. The stator winding 212 receives three-phase alternating current to form an alternating magnetic field in the stator 21. The alternating magnetic field drives the rotor 22 to rotate, thereby causing the motor shaft 23 to rotate coaxially. The motor shaft 23 is used for transmission connection with the wheel 220. The motor shaft 23 transmits the driving force of the motor 20 to the wheel 220, thereby driving the wheel 220 to rotate.

[0070] In one embodiment, such as Figure 2 As shown, the powertrain 100 includes a reducer 30. The reducer 30 includes a gear set 31. An integrated housing includes a reducer housing 14. The reducer housing 14 is used to enclose a reducer receiving groove 141. The reducer receiving groove 141 is used to receive the gear set 31 of the reducer 30. The reducer receiving grooves 141 are arranged along the axial direction A of the motor 20 on one side of the motor receiving groove 111. The reducer receiving groove 141 communicates with the motor receiving groove 111. The gear set 31 is used for drive connection with the motor shaft 23 of the motor 20 and for drive connection with the wheel 220. The motor shaft 23 is used to transmit driving force to a wheel 220 through the gear set 31, thereby driving the wheel 220 to rotate.

[0071] In one embodiment, such as Figure 3As shown, the powertrain 100 includes two motors 20 and two reducers 30. Both motors 20 are located within motor housings 111. The two motors 20 are arranged along an axial direction A. The integrated housing 10 includes two reducer housings 14. The two reducer housings 14 are positioned on opposite sides of the motor housing 11 along the axial direction A of the motors 20. Each gear set 31 is used to receive the driving force from an adjacent motor 20 and to transmit the driving force to a wheel 220. That is, the powertrain 100 is used to drive a pair of wheels 220 to rotate.

[0072] Please see Figures 5-7 ,in Figure 5 This illustration shows another partial structural diagram of the powertrain 100 provided in one embodiment of this application; Figure 6 This illustration shows a partially exploded structural diagram of an electric vehicle 200 provided in one embodiment of this application; Figure 7 This illustration shows a partial communication structure diagram of an electric vehicle 200 provided in one embodiment of this application.

[0073] like Figure 5 and Figure 6 As shown, the integrated housing 10 provided in this embodiment includes an electrical control housing 12. The electrical control housing 12 is integrally formed with the motor housing 11. The electrical control housing 12 is used to form an electrical control receiving groove 121. The bottom of the electrical control receiving groove 121 partially overlaps with the outer peripheral wall of the motor housing 11. The powertrain 100 includes a motor controller 40. The electrical control receiving groove 121 is used to receive the motor controller 40. The motor controller 40 is used to control the output torque and speed of the motor 20.

[0074] In one embodiment, such as Figure 5 and Figure 6 As shown, the electronic control housing 12 includes an electronic control sidewall 122 and an electronic control cover 123. The electronic control sidewall 122 protrudes from the outer peripheral wall of the motor housing 11 in a direction away from the motor receiving groove 111. The electronic control sidewall 122 and the outer peripheral wall of the motor housing 11 enclose and form the electronic control receiving groove 121. The electronic control receiving groove 121 and the motor receiving groove 111 are arranged at intervals along the radial direction R of the motor 20. The electronic control cover 123 is used to cover the opening of the electronic control receiving groove 121. The space formed by the electronic control cover 123 and the electronic control receiving groove 121 is used to accommodate the motor controller 40.

[0075] In one embodiment, the powertrain 100 includes a three-phase copper busbar. The three-phase copper busbar extends radially R along the motor 20. One end of the three-phase copper busbar is located within the motor housing slot 111. The other end of the three-phase copper busbar extends through a shared slot wall between the control housing slot 121 and the motor housing slot 111 and into the motor housing slot 111. A motor controller 40 is electrically connected to the stator winding 212 of the motor 20 via the copper busbar. The motor controller 40 outputs three-phase alternating current to the stator winding 212 of the motor 20. The motor controller 40 controls the output torque and speed of the motor 20 by adjusting the output three-phase alternating current.

[0076] like Figure 5 and Figure 6 As shown, the integrated housing 10 of the powertrain 100 provided in this embodiment of the application also includes four side walls 13. The four side walls 13 protrude from the outer peripheral wall of the motor housing 11 in a direction away from the motor receiving groove 111. The four side walls 13 and the outer peripheral wall of the motor housing 11 are used to enclose and form a domain control mounting groove 101.

[0077] The electric vehicle 200 provided in this embodiment includes a domain controller 240. A domain controller mounting slot 101 is used to mount and fix the domain controller 240. The domain controller 240 is used for communicative connection with a motor controller 40. The domain controller 240 is used to send signals to the motor controller 40, thereby controlling the motor controller 40.

[0078] In one embodiment, such as Figure 5 and Figure 6 As shown, adjacent sidewalls 13 of the four sidewalls 13 are interconnected. Two of the four sidewalls 13, arranged opposite each other, extend along the axial direction A of the motor 20. The other two of the four sidewalls 13, arranged opposite each other, extend along the circumferential direction C of the motor 20. Each sidewall 13 has multiple connection holes 131 at its end away from the motor housing 11. Each connection hole 131 is for fasteners to pass through. Each sidewall 13 is used to mount and fix the domain controller 240 using multiple fasteners.

[0079] In one embodiment, such as Figure 5 As shown, the powertrain 100 includes a signal connection line 244. The signal connection line 244 is used for communication connections with the domain controller 240 and the motor controller 40, respectively.

[0080] In one embodiment, such as Figure 7 As shown, the electric vehicle 200 also includes on-board electrical components 250. A domain controller 240 is used to communicate with the on-board electrical components 250. The domain controller 240 is used to send signals to the on-board electrical components 250, thereby controlling the on-board electrical components 250.

[0081] In one embodiment, such as Figure 7As shown, the electric vehicle 200 includes a central controller 201 (Vehicle Control Unit, VCU). A domain controller 240 is used to communicate with the central controller 201 and to receive instructions from the central controller 201. That is, the domain controller 240 controls the on-board electrical components 250 according to the instructions from the central controller 201.

[0082] In one embodiment, the domain controller 240 is also capable of receiving instructions from a user. That is, the domain controller 240 controls the vehicle electrical components 250 according to the user's instructions.

[0083] In one embodiment, the electric vehicle 200 includes an accelerator pedal sensor. Domain controller 240 is used to receive signals from the brake / accelerator pedal sensor and to send commands to motor controller 40.

[0084] In one embodiment, such as Figure 7 As shown, the electric vehicle 200 includes a brake pedal sensor and a braking system 260. A domain controller 240 receives signals from the brake pedal sensor. The domain controller 240 sends signals to the braking system 260 to control it. The braking system 260 includes a brake motor and a brake motor controller. The brake motor controller is communicatively connected to both the brake motor and the domain controller 240. The brake motor controller receives commands from the domain controller 240 and sends signals to the brake motor.

[0085] In one embodiment, the braking system 260 further includes friction pads. The wheel 220 includes a brake disc. The brake disc is fixed to the hub of the wheel 220. The brake disc is used to rotate synchronously with the hub of the wheel 220. The motor shaft of the brake motor is drivenly connected to the friction pads. The brake motor is used to receive commands from a brake motor controller to drive the friction pads to move toward the brake disc. The friction pads contact the brake disc to generate friction, thereby limiting the rotation of the wheel 220 and braking the electric vehicle 200.

[0086] In one embodiment, such as Figure 7 As shown, the electric vehicle 200 includes a height sensor and a suspension system 270. A domain controller 240 receives signals from the height sensor. The suspension system 270 connects the frame 210 and the wheels 220. The domain controller 240 sends signals to the suspension system 270 to control it.

[0087] In one embodiment, the suspension system 270 includes an air spring and an air pump. A domain controller 240 is communicatively connected to the air pump and sends signals to it. The air pump controls the amount of gas in the air spring, thereby controlling the height and stiffness of the air spring. In other words, the domain controller 240 can control the height and stiffness of the air spring, thereby adjusting the height and stiffness of the suspension system 270.

[0088] In one embodiment, such as Figure 7 As shown, the electric vehicle 200 includes a steering system 280. A domain controller 240 sends signals to the steering system 280 to control it. The steering system 280 includes a steering motor and a steering motor controller. The steering motor is driven to drive the wheels 220. The steering motor controller is communicatively connected to both the steering motor and the domain controller 240. The steering motor controller receives commands from the domain controller 240 and sends signals to the steering motor. The steering motor is driven to drive the wheels 220. The steering motor steers the wheels 220, thereby steering the electric vehicle 200.

[0089] In one embodiment, the electric vehicle 200 includes a differential, a differential lock, and a differential lock sensor. The differential is drivenly connected to the half-shafts of two wheels 220 respectively, transmitting the driving force of the motor 20 to the two wheels 220 so that the two wheels 220 can rotate at different speeds. The differential lock is used to lock the half-shafts of the two wheels 220 in a locked state, so that the two wheels 220 rotate synchronously. The differential lock sensor is used to detect the locking state of the differential lock. A domain controller 240 is communicatively connected to the differential lock sensor and is used to receive signals from the differential lock sensor. The domain controller 240 is also communicatively connected to the differential lock and is used to send commands to the differential lock to control it.

[0090] In the above embodiments, domain controller 240 serves as the chassis domain controller of electric vehicle 200. Domain controller 240 is communicatively connected to braking system 260 to send signals to control braking system 260. Domain controller 240 is communicatively connected to suspension system 270 to send signals to control suspension system 270. Domain controller 240 is communicatively connected to steering system 280 to send signals to control steering system 280.

[0091] In one embodiment, the domain controller 240 is communicatively connected to the accelerator pedal sensor, brake pedal sensor, and height sensor, respectively. In scenarios such as intelligent driving, drifting, and driving on bumpy roads, the domain controller 240 can coordinate the control of the powertrain 100, braking system 260, suspension system 270, and steering system 280, thereby achieving integrated control of the overall vehicle attitude of the electric vehicle 200.

[0092] In existing electric vehicles, domain controllers are typically mounted and fixed to the vehicle frame. This requires additional installation space. Furthermore, the integration between the domain controller and the powertrain is not high. The significant distance between the domain controller and the powertrain results in substantial communication delays between the domain controller and the motor controller.

[0093] like Figure 5 and Figure 6 As shown, the domain control mounting groove 101 and the electronic control receiving groove 121 of the powertrain 100 provided in this embodiment are spaced apart from each other. The domain control mounting groove 101 overlaps with the outer peripheral wall of the motor housing 11. The depth of the domain control mounting groove 101 is less than the depth of the electronic control receiving groove 121. The area of ​​the bottom of the domain control mounting groove 101 is less than the area of ​​the bottom of the electronic control receiving groove 121.

[0094] In one embodiment, such as Figure 5 and Figure 6 As shown, the domain control mounting slot 101 and the electrical control receiving slot 121 along the radial direction R of the motor 20 are located on the same side of the motor housing 11. The depth of the domain control mounting slot 101 is less than the depth of the electrical control receiving slot 121. Since the four side walls 13 of the domain control mounting slot 101 and the electrical control side wall 122 of the electrical control receiving slot 121 all protrude from the outer peripheral wall of the motor housing 11, the dimensions of the four side walls 13 along the protrusion direction are all smaller than the dimensions of the electrical control side wall 122 along the protrusion direction. That is, the space occupied by the four side walls 13 along the radial direction R of the motor 20 is smaller than the space occupied by the electrical control side wall 122. The domain control mounting slot 101 can utilize the radial space of the outer peripheral wall of the motor housing 11 occupied by the electrical control receiving slot 121, so that the arrangement of the domain control mounting slot 101 will not increase the radial boundary of the powertrain 100, and avoid the outer envelope size of the powertrain 100 being too large due to the integration of the domain controller 240.

[0095] In one embodiment, such as Figure 5 As shown, the electrical control housing 121 and the domain controller mounting slot 101 are spaced apart to reduce electromagnetic interference from the motor controller 40 to the domain controller 240. The motor controller 40 and the domain controller 240 each have independent mounting spaces to prevent a failure of one motor controller 40 from affecting the normal operation of the other.

[0096] In one embodiment, such as Figure 5 As shown, the dimension of the electronic control receiving slot 121 along the axial direction A of the motor 20 is smaller than its dimension along the circumferential direction C of the motor 20. The domain control mounting slot 101 and the electronic control receiving slot 121 are arranged alternately along the axial direction A of the motor 20. Because the dimension of the electronic control receiving slot 121 along the axial direction A of the motor 20 is smaller, the domain control mounting slot 101 is arranged along the axial direction A of the motor 20 on one side of the electronic control receiving slot 121, reducing the space occupied by the domain control mounting slot 101 and the electronic control receiving slot 121 in a single direction, thereby reducing the dimension of the powertrain 100 in a single direction.

[0097] In one embodiment, such as Figure 5As shown, the circumferential C-domain control mounting slot 101 of the motor 20 overlaps with the electrical control receiving slot 121. The bottom dimension of the circumferential C-domain control mounting slot 101 of the motor 20 is smaller than the bottom dimension of the electrical control receiving slot 121. The domain control mounting slot 101 occupies less space on the outer peripheral wall of the motor housing 11, which facilitates the installation of other components of the powertrain 100 on the outer peripheral wall of the motor housing 11.

[0098] In one embodiment, such as Figure 6 As shown, the powertrain 100 includes two motor controllers 40. Each motor controller 40 controls the output torque and speed of one motor 20. Since the two motors 20 are arranged along the axial direction A of the motors 20, the two motor controllers 40 are also arranged along the axial direction A of the motors 20, facilitating the electrical connection of each motor controller to one motor 20 via a three-phase copper busbar. The two motor controllers 40 are located within the electrical control receiving slot 121. The arrangement of the two motor controllers 40 along the axial direction A of the motors 20 results in a larger dimension of the electrical control receiving slot 121 along the axial direction A of the motors 20. The circumferential control mounting slot 101 and the electrical control receiving slot 121 are spaced apart along the circumferential direction C of the motors 20, reducing the space occupied by the control mounting slot 101 and the electrical control receiving slot 121 in a single direction, thereby reducing the dimension of the powertrain 100 in a single direction.

[0099] Therefore, the motor housing 11 and the electronic control housing 12 of the powertrain 100 provided in this application embodiment are integrally formed. The motor housing 11 is used to form a motor receiving groove 111 for accommodating the motor 20. The electronic control housing 12 is used to form an electronic control receiving groove 121 for accommodating the motor controller 40. The motor controller 40 is used to be electrically connected to the motor 20. The motor 20 is used to transmit power to the wheels 220 of the electric vehicle 200 to drive the wheels 220 to rotate.

[0100] The integrated housing 10 of the powertrain 100 provided in this embodiment includes a domain controller mounting slot 101. The domain controller mounting slot 101 is used to mount and fix the domain controller 240. The domain controller mounting slot 101 of the integrated housing 10 serves as a reserved mounting interface for the domain controller 240. The domain controller 240 can be integrated into the powertrain 100, saving the installation space required for the domain controller 240 and resulting in a higher degree of integration for the electric vehicle 200. The domain controller 240 is integrated into the outer peripheral wall of the motor housing 11, reducing the distance between the domain controller 240 and the motor controller 40, which helps to reduce the communication delay between the domain controller 240 and the motor controller 40.

[0101] The domain controller mounting slot 101 of the powertrain 100 provided in this embodiment is formed by four side walls 13 and the outer peripheral wall of the motor housing 11. The bottom of the domain controller mounting slot 101 reuses the outer peripheral wall of the motor housing 11, reducing the material required to surround the domain controller mounting slot and improving the integration of the powertrain 100. Compared with the electronic control receiving slot 121, the depth and bottom area of ​​the domain controller mounting slot 101 are smaller. The domain controller mounting slot 101 can utilize the radial space outside the motor housing 11 occupied by the electronic control receiving slot 121, so that the arrangement of the domain controller mounting slot 101 does not increase the outer envelope size of the powertrain 100, avoiding the overall size of the powertrain 100 being too large due to the integration of the domain controller 240.

[0102] The electric vehicle 200 provided in this application embodiment uses the powertrain 100 arranged with the integrated domain controller 240 described above. The domain controller 240 makes full use of the radial space of the outer peripheral wall of the motor housing 11 occupied by the electronic control housing 12. The domain controller 240 can be integrated into the powertrain 100 without increasing the outer envelope size of the powertrain 100, saving the installation space required for the domain controller 240, and making the electric vehicle 200 have a high degree of integration.

[0103] Please see Figures 8-11 ,in Figure 8 This illustration shows a partial cross-sectional structural diagram of an electric vehicle 200 provided in one embodiment of this application; Figure 9 This illustration shows another partial structural diagram of an electric vehicle 200 provided in one embodiment of this application; Figure 10 This illustration shows another partial structural diagram of an electric vehicle 200 provided in one embodiment of this application; Figure 11 This illustration shows another partial cross-sectional structural diagram of an electric vehicle 200 provided in one embodiment of this application.

[0104] In one embodiment, a domain controller mounting slot 101 is used to fix a slot-shaped domain controller cover 102. The domain controller cover 102 is used to cover the opening of the domain controller mounting slot 101. The bottom of the domain controller cover 102 is used to fix a circuit board 241. Along the arrangement direction of the domain controller mounting slot 101 and the domain controller cover 102, the circuit board 241 and the bottom of the domain controller mounting slot 101 are spaced apart from each other.

[0105] In one embodiment, such as Figures 8-11As shown, the four sidewalls 13 of the domain controller mounting slot 101 are fixedly connected to the domain controller cover plate 102 by fasteners. The domain controller cover plate 102 covers the opening of the domain controller mounting slot 101. The domain controller cover plate 102 is slot-shaped. The bottom of the slot of the domain controller cover plate 102 is used to fix the circuit board 241 of the domain controller 240. For ease of description, in the following embodiments, the slot-shaped domain controller cover plate 102 is defined as forming the circuit board mounting slot 1021. That is, the opening of the domain controller cover plate 102 is the opening of the circuit board mounting slot 1021. The bottom of the slot of the domain controller cover plate 102 is the bottom of the circuit board mounting slot 1021.

[0106] The opening of the circuit board mounting slot 1021 faces the domain controller mounting slot 101. The opening of the circuit board mounting slot 1021 communicates with the opening of the domain controller mounting slot 101. The bottom of the circuit board mounting slot 1021 is used to fix and connect the circuit board 241 of the domain controller 240. Along the arrangement direction of the domain controller mounting slot 101 and the domain controller cover plate 102, the circuit board 241 and the bottom of the domain controller mounting slot 101 are spaced apart. That is, the space enclosed by the domain controller mounting slot 101 and the circuit board mounting slot 1021 is used to accommodate the circuit board 241 of the domain controller 240. The four side walls 13 of the domain controller mounting slot 101 and the domain controller cover plate 102 serve as the housing of the circuit board 241, preventing external substances from contacting the circuit board 241, thereby protecting the circuit board 241.

[0107] Circuit board 241 is fixed to the domain controller cover 102, making circuit board 241 integrated into the domain controller cover 102. This facilitates the installation and fixing of domain controller 240 to domain controller mounting slot 101, improving the installation efficiency of installing and fixing domain controller 240 to powertrain 100. Circuit board 241 is fixed to the bottom of circuit board mounting slot 1021. Circuit board mounting slot 1021 can accommodate at least part of circuit board 241, thereby reducing the required depth of domain controller mounting slot 101 and reducing the manufacturing difficulty of integrated housing 10.

[0108] In one embodiment, the four sidewalls 13 of the domain controller cover 102 and the domain controller mounting slot 101 are all made of metal. The metal material used for the domain controller cover 102 and the domain controller mounting slot 101 provides better electromagnetic shielding, reducing the impact of external electromagnetic interference on the circuit board 241 and ensuring high reliability of the domain controller 240. In other embodiments, the four sidewalls 13 of the domain controller cover 102 and the domain controller mounting slot 101 can be made of other materials with electromagnetic shielding effects, which can also reduce the impact of external electromagnetic interference on the circuit board 241.

[0109] In one embodiment, a portion of the bottom of the domain controller cover 102 is recessed away from the opening of the domain controller cover 102 to form a groove 1022. A circuit board 241 covers the opening of one of the grooves 1022. The space formed by the circuit board 241 and the groove 1022 is used to accommodate the signal connector 242 of the domain controller 240.

[0110] In one embodiment, such as Figure 9 and Figure 10 As shown, a portion of the bottom of the circuit board mounting slot 1021 is recessed in a direction away from the opening of the circuit board mounting slot 1021, forming a groove 1022. The distance between the bottom of the groove 1022 and the opening of the circuit board mounting slot 1021 is relatively large, resulting in a larger space formed by the circuit board 241 and the groove, along the arrangement direction of the domain controller cover 102 and the domain controller mounting slot 101, thereby accommodating the signal connector 242 of the domain controller 240. One end of the signal connector 242 is used for electrical connection to the circuit board 241, and the other end is used for electrical connection to the vehicle-mounted electrical device 250, enabling the circuit board 241 to be electrically connected to the vehicle-mounted electrical device 250 via the signal connector 242, thus realizing communication between the domain controller 240 and the vehicle-mounted electrical device 250.

[0111] The signal connector 242 is located on the side of the circuit board 241 opposite to the domain controller mounting slot 101. The signal connector 242 does not occupy space within the domain controller mounting slot 101, further reducing the required depth of the domain controller mounting slot 101 and lowering the manufacturing difficulty of the integrated housing 10. A groove 1022 is formed by a partial recess in the bottom of the circuit board mounting slot 1021. Along the arrangement direction of the domain controller cover 102 and the domain controller mounting slot 101, the bottom of the groove 1022 is located on the side of the bottom of the circuit board mounting slot 1021 opposite to the domain controller mounting slot 101. A portion of the surface of the domain controller cover 102 on the side opposite to the domain controller mounting slot 101 protrudes in the direction opposite to the domain controller mounting slot 101, giving the surface of the domain controller cover 102 on the side opposite to the domain controller mounting slot 101 a larger surface area, which is beneficial for heat dissipation of the electrical components on the circuit board 241 through the domain controller cover 102.

[0112] In one embodiment, such as Figure 11 As shown, the circuit board mounting slot 1021 includes a heat dissipation protrusion 1027. The heat dissipation protrusion 1027 protrudes from the bottom of the circuit board mounting slot 1021 toward the opening of the circuit board mounting slot 1021. The heat dissipation protrusion 1027 is used to abut against electrical components on the circuit board 241. The heat dissipation protrusion 1027 is used to conduct heat from the electrical components to the domain controller cover 102, so that the domain controller 240 has a high heat dissipation efficiency.

[0113] In one embodiment, the heat dissipation protrusion 1027 is positioned opposite the bottom of the circuit board mounting slot 1021 to secure the thermal pad. The thermal pad is used to adhere to the electrical components on the circuit board 241, which helps to dissipate heat from the circuit board 241 as a whole and further improves the heat dissipation efficiency of the domain controller 240.

[0114] In one embodiment, the other end of the signal connector 242 is used to be fixed to the side of the circuit board 241 opposite to a recess 1022 by selective wave soldering. Selective wave soldering results in a lower defect rate of solder joints, ensuring the consistency and reliability of the solder joints between the signal connector 242 and the circuit board 241.

[0115] In one embodiment, the distance between the opening of the domain controller cover 102 and the bottom of a recess 1022 is greater than half the depth of the domain controller mounting slot 101. The distance between the opening of the domain controller cover 102 and the bottom of the recess 102 is less than half the depth of the domain controller mounting slot 101.

[0116] In one embodiment, such as Figure 8 As shown, the distance between the opening of the circuit board mounting slot 1021 and the bottom of the recess 1022 is H1. The depth of the domain controller mounting slot 101 is H2. Compared to half the depth H2 of the domain controller mounting slot 101, the distance H1 between the opening of the circuit board mounting slot 1021 and the bottom of the recess 1022 is larger, ensuring that the space enclosed by the circuit board 241 and the recess 1022 is larger, thereby accommodating the signal connector 242 of the domain controller 240. The distance between the opening of the circuit board mounting slot 1021 and the bottom of the circuit board mounting slot 1021 is H3. Compared to half the depth H2 of the domain controller mounting slot 101, the distance H3 between the opening of the circuit board mounting slot 1021 and its bottom is smaller, reducing the overall size of the domain controller cover 102, thereby reducing the space occupied by the domain controller cover 102.

[0117] In one embodiment, the distance between the surface of the domain control cover 102 facing away from the domain control mounting groove 101 and the outer peripheral wall of the motor housing 11 is less than the radial dimension R of the electrical control housing 12 along the motor 20.

[0118] In one embodiment, the electronic control cover 123 is fixed to the side wall of the electronic control receiving slot 121. The distance between the surface of the domain control cover 102 facing away from the domain control mounting slot 101 and the outer peripheral wall of the motor housing 11 is smaller than the radial dimension R of the electronic control housing 12 along the motor 20. This allows the domain control cover 102 to also utilize the radial space of the outer peripheral wall of the motor housing 11 occupied by the electronic control housing 12, ensuring that the arrangement of the domain control cover 102 does not increase the outer envelope size of the powertrain 100, thus avoiding an excessively large overall size of the powertrain 100 due to the integration of the domain controller 240.

[0119] In one embodiment, the area of ​​the slot in the domain controller cover 102 is smaller than the area of ​​the slot in the domain controller mounting slot 101. The domain controller cover 102 includes a flange 1023. The flange 1023 surrounds the outer side of the sidewall of the domain controller cover 102. The flange 1023 is flush with the surface of the domain controller cover 102 facing the domain controller mounting slot 101. The flange 1023 is used to securely connect the four sidewalls 13 of the domain controller mounting slot 101.

[0120] In one embodiment, such as Figure 11 As shown, a flange 1023 is provided on the outer side of the sidewall of the circuit board mounting slot 1021. The flange 1023 protrudes from the outer side of the sidewall of the circuit board mounting slot 1021 in a direction away from the circuit board mounting slot 1021. The surface of the flange 1023 facing the domain controller mounting slot 101 is used to form a mounting surface 1023a. The mounting surface 1023a is used to abut against the four sidewalls 13 of the domain controller mounting slot 101 on the side away from the motor housing 11. The flange 1023 includes mating holes 1023b. A plurality of mating holes 1023b extend through the flange 1023 along the arrangement direction of the domain controller cover 102 and the domain controller mounting slot 101. Each mating hole 1023b is used to align with a connection hole 131 of the sidewall 13. Each mating hole 1023b is used for fasteners to pass through, so that the domain controller cover 102 is fixed to the four sidewalls 13 by fasteners.

[0121] The domain control cover 102 is fixedly connected to the four side walls 13 of the domain control mounting slot 101 via flanges 1023, so that the domain control mounting slot 101 with a larger opening can cooperate with the circuit board mounting slot 1021 with a smaller opening, thereby reducing the size of the domain control cover 102 along the direction perpendicular to the arrangement of the domain control cover 102 and the domain control mounting slot 101, thus reducing the space occupied by the domain control cover 102, and the outer peripheral wall of the motor housing 11 has more space to install other components of the powertrain 100.

[0122] In one embodiment, a sidewall of a recess 1022 includes a signal interface mounting hole 1024. The signal interface mounting hole 1024 is used to secure a signal connector 242 of a domain controller 240. The signal connector 242 and a circuit board 241 are electrically connected to the surface of a recess 1022.

[0123] In one embodiment, such as Figure 11As shown, a signal interface mounting hole 1024 penetrates one sidewall of a recess 1022. One end of the signal connector 242 of the domain controller 240 protrudes to the outside of the recess 1022 through the signal interface mounting hole 1024. One end of the signal connector 242 is used for communication connection with the vehicle-mounted electrical device 250. The other end of the signal connector 242 is bent towards the circuit board 241. The other end of the signal connector 242 is fixed to the circuit board 241 and electrically connected to the surface of the circuit board 241 facing the recess 1022, thereby enabling communication between the electrical device on the circuit board 241 and the vehicle-mounted electrical device 250. The signal connector 242 of the domain controller 240 is integrated into the domain controller cover 102 through the signal interface mounting hole 1024, further improving the installation efficiency of mounting and fixing the domain controller 240 in the domain controller mounting slot 101.

[0124] In one embodiment, such as Figure 11 As shown, one sidewall of a recess 1022 includes a notch. The sidewall of a circuit board mounting slot 1021 includes another notch. One sidewall of a recess 1022 is aligned with the sidewall of a circuit board mounting slot 1021. The two notches are joined to form a signal interface mounting hole 1024. The dimension of the signal interface mounting hole 1024 along the arrangement direction of the domain control cover 102 and the domain control mounting slot 101 is greater than the distance between the opening and bottom of the circuit board mounting slot 1021. The larger dimension of the signal interface mounting hole 1024 along the arrangement direction of the domain control cover 102 and the domain control mounting slot 101 results in a larger exposed area for the signal connector 242, facilitating simultaneous communication between the signal connector 242 and multiple vehicle-mounted electrical devices 250, thereby coordinating and controlling the operation of the multiple vehicle-mounted electrical devices 250.

[0125] In one embodiment, a sidewall of a recess 1022 includes two spaced-apart signal interface mounting holes 1024. The arrangement direction of the two signal interface mounting holes 1024 intersects the arrangement direction of the domain controller cover 102 and the domain controller mounting slot 101. Each signal interface mounting hole 1024 is used to secure a signal connector 242 of the domain controller 240. Each signal connector 242 is electrically connected to a surface of the circuit board 241 facing the recess 1022.

[0126] In one embodiment, such as Figure 9 and Figure 10As shown, circuit board 241 includes a main control circuit 241a and a redundant control circuit 241b. The main control circuit 241a is communicatively connected to the vehicle electrical device 250 via a signal connector 242. The redundant control circuit 241b is communicatively connected to the vehicle electrical device 250 via another signal connector 242. The redundant control circuit 241b can replace the main control circuit in communicating with the vehicle electrical device when the main control circuit 241a fails, thereby ensuring the normal operation of the domain controller 240 and making the domain controller 240 more reliable.

[0127] In one embodiment, such as Figure 9 and Figure 10 As shown, each signal connector 242 is fixed to a signal interface mounting hole 1024. The arrangement direction of the two signal interface mounting holes 1024 intersects with the arrangement direction of the domain controller cover 102 and the domain controller mounting groove 101, which helps to reduce the depth dimension of a groove 1022, thereby reducing the overall size of the domain controller cover 102.

[0128] Two signal connectors 242 are arranged at intervals along the arrangement direction of the two signal interface mounting holes 1024. Each signal connector 242 is exposed to the outside of a recess 1022 through one signal interface mounting hole 1024. The main control circuit 241a and the redundant control circuit 241b of the circuit board 241 are arranged along the arrangement direction of the two signal interface mounting holes 1024, so that the main control circuit 241a and the redundant control circuit 241b can be electrically connected to the two signal connectors 242 respectively.

[0129] In one embodiment, the side of the circuit board 241 facing away from a recess 1022 is used to fix a shield 243. Along the arrangement direction of the domain controller cover 102 and the domain controller mounting slot 101, the distance between the shield 243 and the bottom of the domain controller mounting slot 101 is less than the depth of the domain controller mounting slot 101. The projection of the shield 243 onto the bottom of the domain controller cover 102 is spaced apart from a recess 1022.

[0130] In one embodiment, such as Figure 11 As shown, the shielding cover 243 is fixed to the side of the circuit board 241 opposite to a recess 1022. The shielding cover 243 extends into the domain controller mounting slot 101 along the direction of the domain controller cover plate 102 and the domain controller mounting slot 101, making full use of the internal space of the domain controller mounting slot 101 and improving the integration of the domain controller 240. The shielding cover 243 is used to shield the electrical components on the circuit board 241. The shielding cover 243 and the circuit board 241 together form a shielded space, reducing electromagnetic interference to the electrical components on the circuit board 241 from the signal connector 242.

[0131] The shielding space formed by the shielding cover 243 and the circuit board 241 is located on the side of the circuit board 241 away from the signal connector 242. The relatively large distance between the shielding space and the signal connector 242 is beneficial to improving the shielding effect of the shielding cover 243 against electromagnetic interference. The projection of the shielding cover 243 on the bottom of the groove of the domain control cover plate 102 is spaced apart from a groove 1022, which further improves the shielding effect of the shielding cover 243 against electromagnetic interference by separating the shielding cover 243 from the signal connector 242.

[0132] In one embodiment, the domain control cover 102 includes a protective member 1025. The protective member 1025 protrudes from the outer side of the sidewall of the circuit board mounting slot 1021 toward a direction opposite to the circuit board mounting slot 1021. The protective member 1025 surrounds the outer side of the signal interface mounting hole 1024 to protect the signal connector 242 exposed through the signal interface mounting hole 1024. The protective member 1025 is integrally formed with the sidewall of the circuit board mounting slot 1021, eliminating the space required for mounting the protective member 1025 to the sidewall of the circuit board mounting slot 1021, allowing the domain control cover 102 to have a smaller radial dimension R along the motor 20.

[0133] In one embodiment, the protective member 1025 partially overlaps with the flange 1023, reducing the space occupied by the protective member 1025 and the flange 1023 on the sidewall of the circuit board mounting slot 1021, so that the domain control cover 102 can have a smaller size that decreases along the motor 20.

[0134] Please see Figures 12-15 ,in Figure 12 This illustration shows a structural diagram of a domain control cover 102 provided in one embodiment of this application; Figure 13 This illustration shows another partial structural diagram of the powertrain 100 provided in one embodiment of this application; Figure 14 This illustration shows another partial cross-sectional structural diagram of an electric vehicle 200 provided in one embodiment of this application; Figure 15 This illustration shows another partial cross-sectional structural diagram of an electric vehicle 200 provided in one embodiment of this application.

[0135] In one embodiment, the domain control cover 102 includes a support protrusion 1026. The support protrusion 1026 protrudes from the bottom of a recess 1022 toward the opening of the domain control cover 102. The support protrusion 1026 is used to support and secure the circuit board 241 toward the side facing the recess 1022. The length of the support protrusion 1026 is less than the distance between the bottom of the recess 1022 and the opening of the domain control cover 102.

[0136] In one embodiment, the circuit board 241 is fixed to the bottom of the circuit board mounting groove 1021. Since the bottom of a groove 1022 is spaced apart from the circuit board 241, the fixed connection of the circuit board 241 at one groove 1022 is missing, resulting in low reliability of the connection between the circuit board 241 and the domain controller cover 102. The circuit board 241, which is subjected to uneven force, is prone to deformation, which is not conducive to the long-term operation of the domain controller 240.

[0137] In one embodiment, such as Figure 12 As shown, the domain control cover 102 includes multiple support protrusions 1026. These support protrusions 1026 are spaced apart at the bottom of a recess 1022. Each support protrusion 1026 has one end facing the opening of the circuit board mounting slot 1021 for fixing the circuit board 241. The multiple support protrusions 1026 support and fix the circuit board 241 to the side facing the recess, ensuring that each position of the circuit board 241 is fixed. This improves the reliability of the connection between the circuit board 241 and the domain control cover 102, makes the force on the circuit board 241 uniform, reduces the deformation of the circuit board 241, and ensures that the circuit board 241 can operate for a long time.

[0138] The missing fixing connection of circuit board 241 at a recess 1022 will also cause signal connector 242 to need to support part of circuit board 241, which is not conducive to the long-term use of signal connector 242. By providing support for circuit board 241 through support protrusion 1026, the stress state of signal connector 242 can also be improved, thereby extending the service life of signal connector 242.

[0139] In addition, the length of each support protrusion 1026 is less than the distance between the bottom of a groove 1022 and the opening of a circuit board mounting slot 1021, so that the circuit board mounting slot 1021 can accommodate at least part of the circuit board 241, reducing the required depth of the domain controller mounting slot 101.

[0140] In one embodiment, the four sidewalls 13 of the domain controller mounting slot 101 include two opposing sidewalls 13 arranged along the alignment direction of the electronic control receiving slot 121 and the domain controller mounting slot 101. The surface of the sidewall 13 closest to the electronic control receiving slot 121 includes a through-hole 132 extending through the sidewall 13. The through-hole 132 is used for a signal connection line 244 of the domain controller 240 to pass through.

[0141] In one embodiment, such as Figure 13As shown, the four sidewalls 13 of the domain control mounting slot 101 include two sidewalls 13 arranged along the arrangement direction of the electrical control receiving slot 121 and the domain control mounting slot 101. For ease of description, in the following embodiments, the two sidewalls 13 are defined as the first sidewall 13a and the second sidewall 13b. Among the two sidewalls 13, the sidewall 13 closer to the electrical control receiving slot 121 is the first sidewall 13a, and the other sidewall 13 is the second sidewall 13b.

[0142] One end of the signal connection cable 244 is located inside the electrical control receiving slot 121 and is used for communication connection with the motor controller 40. A through hole 132 is provided in the first sidewall 13a. The other end of the signal connection cable 244 extends out of the electrical control receiving slot 121 and through the through hole 132 into the domain controller mounting slot 101 to be electrically connected to the circuit board 241. The signal connection cable 244 is used to realize communication between the motor controller 40 and the domain controller 240.

[0143] The signal connection line 244 is pre-installed on the first sidewall 13a of the domain controller mounting slot 101, reducing the installation steps of the domain controller 240 and facilitating communication between the motor controller 40 and the domain controller 240. The through-hole 132 is located on the sidewall of the domain controller mounting slot 101 facing the electrical control receiving slot 121, thereby reducing the length of the signal connection line 244 and lowering the communication delay between the motor controller 40 and the domain controller 240. The through-hole 132's location on the sidewall 13a of the domain controller mounting slot 101 ensures that the through-hole 132 and the signal connector 242 are positioned on opposite sides of the circuit board 241 along the arrangement direction of the domain controller cover plate 102 and the domain controller mounting slot 101, which helps reduce electromagnetic interference from the signal connector 242 to the signal connection line 244.

[0144] In one embodiment, one of the two sidewalls 13 near the electronically controlled receiving slot 121 partially overlaps with the sidewall of the electronically controlled receiving slot 121, and the through hole 132 is used to connect the electronically controlled receiving slot 121 and the domain control mounting slot 101 respectively.

[0145] In one embodiment, the domain controller mounting slot 101 and the electrical control receiving slot 121 share the same sidewall. A through-hole 132, arranged along the direction of the domain controller mounting slot 101 and the electrical control receiving slot 121, is used to penetrate the shared sidewall. Since the opposite ends of the through-hole 132 connect the domain controller mounting slot 101 and the electrical control receiving slot 121 respectively, a signal connection line 244 extends from the electrical control receiving slot 121 through the through-hole 132 into the domain controller mounting slot 101. Each segment of the signal connection line 244 is located within the electrical control receiving slot 121, the through-hole 132, and the domain controller mounting slot 101, respectively. The signal connection line 244 is not exposed to the outside of the integrated housing 10, thereby protecting the signal connection line 244 and giving it a longer service life.

[0146] In addition, the small spacing between the domain controller mounting slot 101 and the electrical control receiving slot 121, which share the same sidewall, results in a shorter required signal connection line 244, which helps to reduce the communication delay between the domain controller 240 and the motor controller 40.

[0147] In one embodiment, the through hole 132 and a groove 1022 of the domain controller 240 are spaced apart along the extension direction of a sidewall 13 where the through hole 132 is located.

[0148] In one embodiment, such as Figure 13 As shown, the electronic control receiving slot 121 and the domain control mounting slot 101 are arranged along the circumferential direction C of the motor 20. The first sidewall 13a and the second sidewall 13b extend along the axial direction A of the motor 20, respectively. A through hole 132 and a groove 1022 are spaced apart along the extension direction of the first sidewall 13a. That is, the through hole 132 and the groove 1022 are spaced apart along the axial direction A of the motor 20, so that the signal connection line 244 passing through the through hole 132 and the signal connector 242 in the groove 1022 are spaced apart, reducing the electromagnetic interference generated by the signal connector 242 on the signal connection line 244.

[0149] In one embodiment, a portion of the shield 243 is located between the through-hole 132 and a recess 1022 along the extending direction of one sidewall 13 where the through-hole 132 is located. The through-hole 132 and the shield 243 partially overlap along the arrangement direction of the domain control cover plate 102 and the domain control mounting slot 101.

[0150] In one embodiment, such as Figure 14 As shown, a partial shield 243 is arranged between the through hole 132 and a recess 1022 along the extension direction of the first sidewall 13a. The shield 243 serves to separate the through hole 132 and the recess 1022, reducing electromagnetic interference from the signal connector 242 within the recess 1022 to the signal connection line 244 at the through hole 132. The shield 243 partially overlaps with the through hole 132 along the arrangement direction of the domain controller cover plate 102 and the domain controller mounting slot 101. The projection of the shield 243 on the first sidewall 13a is used to shield part of the through hole 132, further reducing electromagnetic interference from the signal connector 242 to the signal connection line 244, thereby improving the reliability of communication between the domain controller 240 and the motor controller 40.

[0151] In one embodiment, the shield 243 includes a notch 2431. The notch 2431 extends along the sidewall 13 where the through-hole 132 is located, and is situated on the side of the shield 243 opposite to a recess 1022. The notch 2431 exposes a communication interface 2411 of the circuit board 241. The communication interface 2411 is used for communication connection with a signal connection line.

[0152] In one embodiment, such as Figure 15 As shown, the communication interface 2411 of the circuit board 241 is located inside the shielding cover 243. The signal connector 242 is located outside the shielding cover 243. The shielding cover 243 is used to separate the communication interface 2411 and the signal connector 242, reducing the electromagnetic interference of the signal connector 242 to the communication interface 2411. The communication interface 2411 is exposed through a notch 2431, which facilitates the communication connection between the communication interface 2411 and the signal connection line 244, thereby realizing the communication between the circuit board 241 and the motor controller 40. The notch 2431 is located on the side of the shielding cover 243 opposite to a groove 1022 along the extension direction of the first sidewall 13a. The distance between the notch 2431 and the signal connector 242 is relatively large, thereby reducing the impact of the notch 2431 on the overall shielding effect of the shielding cover 243.

[0153] Furthermore, the communication interface 2411 is exposed through a notch 2431 on the side of the shield 243 facing away from the recess 1022. That is, compared to the side of the shield 243 facing the recess 1022, the communication interface 2411 is closer to the side of the shield 243 facing away from the recess 1022, which results in a larger distance between the communication interface 2411 and the signal connector 242, reducing the electromagnetic interference of the signal connector 242 to the communication interface 2411, and improving the reliability of communication between the circuit board 241 and the motor controller 40.

[0154] In one embodiment, the four sidewalls 13 of the domain controller mounting slot 101 include two third sidewalls 13c. Each third sidewall 13c is connected to the other two sidewalls 13. One of the two third sidewalls 13c is flush with the sidewall of a recess 1022 of the domain controller cover 102 of the domain controller 240. The distance between the through hole 132 and one third sidewall 13c along the direction in which the two third sidewalls 13c are arranged is greater than the distance between the through hole 132 and the other third sidewall 13c.

[0155] In one embodiment, such as Figure 13 As shown, each third sidewall 13c is connected to the first sidewall 13a and the second sidewall 13b, respectively. That is, the four sidewalls 13 are connected in sequence to form a domain control mounting groove 101 with the outer peripheral wall of the motor housing 11. The distance between the through hole 132 and the third sidewall 13c near a groove 1022 is relatively large, which makes the distance between the signal connection line 244 and the signal connector 242 larger, further reducing the electromagnetic interference generated by the signal connector 242 on the signal connection line 244.

[0156] In one embodiment, the length of each of the two sidewalls 13 along its own extending direction is smaller than the length of the third sidewall 13c along its own extending direction.

[0157] In one embodiment, such as Figure 13As shown, the first sidewall 13a and the second sidewall 13b extend circumferentially along the C direction of the motor 20. The two third sidewalls 13c extend axially along the A direction of the motor 20. The lengths of the first sidewall 13a and the second sidewall 13b are smaller than the lengths of the two third sidewalls 13c. The smaller spacing between the two third sidewalls 13c allows the domain controller 240 to have more space to accommodate other components of the powertrain 100. These other components can also utilize the radial space of the outer peripheral wall of the motor housing 11 occupied by the electronic control housing 12, without increasing the overall size of the powertrain 100, thus improving the integration of the powertrain 100.

[0158] In one embodiment, the four sidewalls 13 of the domain controller mounting slot 101 are integrally formed with the outer peripheral wall of the motor housing 11. Since the four sidewalls of the domain controller mounting slot 101 are integrally formed with the motor housing 11, there is no need to separately install the four sidewalls 13 of the domain controller mounting slot 101, thus improving the assembly efficiency of the powertrain 100. The integrally formed domain controller mounting slot 101 has high structural strength, resulting in high reliability of the connection between the domain controller 240 and the powertrain 100.

[0159] Please see Figure 16 and Figure 17 ,in Figure 16 This illustration shows another partial structural diagram of the powertrain 100 provided in one embodiment of this application; Figure 17 This illustration shows another partial structural diagram of an electric vehicle 200 provided in one embodiment of this application.

[0160] In one embodiment, the projections of the four sidewalls 13 of the domain control mounting slot 101 along the arrangement direction of the domain control mounting slot 101 and the electronic control receiving slot 121 are located within the electronic control housing 12.

[0161] In one embodiment, such as Figure 16 As shown, the projections of the four side walls 13 of the domain control mounting slot 101 along the arrangement direction of the domain control mounting slot 101 and the electrical control receiving slot 121 are all located within the electrical control housing 12. That is, the dimensions of the first side wall 13a and the second side wall 13b of the domain control mounting slot 101 along their own extension direction are small, and the space occupied by the domain control mounting slot 101 on the outer peripheral wall of the motor housing 11 is small, so that the outer peripheral wall of the motor housing 11 has more space to install other components of the powertrain 100.

[0162] In one embodiment, the powertrain 100 includes a heat exchanger 50. The heat exchanger 50 is fixed to the outer peripheral wall of the motor housing 11. The arrangement direction of the heat exchanger 50 intersects the arrangement direction of the domain control mounting slot 101 and the electrical control receiving slot 121.

[0163] In one embodiment, such as Figure 16 and Figure 17 As shown, the heat exchanger 50 is fixed to the outer peripheral wall of the motor housing 11. The outer peripheral wall of the motor housing 11 includes two oil ports 112. The oil storage chamber inside the heat exchanger 50 is connected to the two oil ports 112 respectively. The heat exchanger 50 is used to receive oil through one oil port 112 and to output oil to the other oil port 112. The oil is used for cooling the motor 20 or for lubricating the gear set 31 of the reducer 30. The coolant chamber inside the heat exchanger 50 is used to receive coolant. The coolant has a lower temperature and is used to lower the temperature of the oil in the oil storage chamber, so that the heat exchanger 50 outputs lower-temperature oil to the oil inlet.

[0164] The heat exchanger 50, the domain control mounting slot 101, and the electrical control receiving slot 121 along the radial R of the motor 20 are all located on the same side of the outer peripheral wall of the motor housing 11. The arrangement direction of the heat exchanger 50 and the domain control mounting slot 101 intersects the arrangement direction of the domain control mounting slot 101 and the electrical control receiving slot 121, which can reduce the space required in a single direction for arranging the heat exchanger 50 on the outer peripheral wall of the motor housing 11.

[0165] In one embodiment, along the arrangement direction of the heat exchanger 50 and the domain control mounting slot 101, the heat exchanger 50 and the domain control mounting slot 101 overlap with the electrical control receiving slot 121, respectively.

[0166] In one embodiment, such as Figure 16 As shown, the heat exchanger 50 is arranged on one side of the domain control mounting slot 101 along the circumferential direction C of the motor 20. The size of the electrical control receiving slot 121 along the circumferential direction C of the motor 20 is larger than the sum of the size of the heat exchanger 50 and the size of the domain control mounting slot 101. The heat exchanger 50 and the domain control mounting slot 101 overlap with the electrical control receiving slot 121 along the circumferential direction C of the motor 20. The heat exchanger 50 and the domain control mounting slot 101 make full use of the space occupied by the electrical control housing 12 on the outer peripheral wall of the motor housing 11, without increasing the outer envelope size of the powertrain 100, thus improving the integration of the powertrain 100.

[0167] In one embodiment, the size of the heat exchanger 50 along the radial direction R of the motor 20 is smaller than the size of the electrical control housing 12. The heat exchanger 50 makes full use of the radial space of the outer peripheral wall of the motor housing 11 occupied by the electrical control housing 12, without increasing the outer envelope size of the powertrain 100, thereby improving the integration of the powertrain 100.

[0168] In one embodiment, the powertrain 100 includes a charging and distribution device 60. The charging and distribution device 60 is fixed to the outer peripheral wall of the motor housing 11. The arrangement direction of the charging and distribution device 60 intersects the arrangement direction of the domain control mounting slot 101 and the electronic control receiving slot 121.

[0169] In one embodiment, such as Figure 17As shown, the charging and power distribution device 60 is fixed to the outer peripheral wall of the motor housing 11. The charging and power distribution device 60 includes at least one of an on-board charger, a power distributor, and a DC-DC converter. The on-board charger is used to electrically connect to the power battery 230. The on-board charger is used to electrically connect an external power source to the power battery 230, thereby charging the power battery 230. The power distributor is used for power distribution and management in the electric vehicle 200's electrical system. The DC-DC converter is used to receive a first DC power and output a second DC power. The voltage of the second DC power is different from the voltage of the first DC power. The output voltage of the second DC power is used to meet the power requirements of different on-board electrical devices 250.

[0170] The charging and distribution device 60, the domain control mounting slot 101, and the electrical control receiving slot 121 along the radial direction R of the motor 20 are all located on the same side of the outer peripheral wall of the motor housing 11. The arrangement direction of the charging and distribution device 60 and the domain control mounting slot 101 intersects the arrangement direction of the domain control mounting slot 101 and the electrical control receiving slot 121, which can reduce the space required in a single direction for arranging the charging and distribution device 60 on the outer peripheral wall of the motor housing 11.

[0171] In one embodiment, along the arrangement direction of the charging and power distribution device 60 and the domain control mounting slot 101, the charging and power distribution device 60 and the domain control mounting slot 101 overlap with the electronic control receiving slot 121, respectively.

[0172] In one embodiment, such as Figure 17 As shown, the charging and distribution device 60 is arranged on one side of the domain control mounting slot 101 along the axial direction A of the motor 20. The size of the electrical control receiving slot 121 along the axial direction A of the motor 20 is larger than the sum of the sizes of the charging and distribution device 60 and the domain control mounting slot 101. The charging and distribution device 60 and the domain control mounting slot 101 overlap with the electrical control receiving slot 121 along the axial direction A of the motor 20. The charging and distribution device 60 and the domain control mounting slot 101 make full use of the space occupied by the electrical control housing 12 on the outer peripheral wall of the motor housing 11, without increasing the outer envelope size of the powertrain 100, thus improving the integration of the powertrain 100.

[0173] In one embodiment, the size of the charging and distribution device 60 along the radial direction R of the motor 20 is smaller than the size of the electronic control housing 12. The charging and distribution device 60 makes full use of the radial space of the outer peripheral wall of the motor housing 11 occupied by the electronic control housing 12, without increasing the outer envelope size of the powertrain 100, thereby improving the integration of the powertrain 100.

[0174] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the scope of protection of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A powertrain with an integrated domain controller layout, characterized in that, The powertrain includes an integrated housing, which comprises a one-piece molded motor housing and an electronic control housing. The motor housing forms a motor housing groove for accommodating the motor, and the electronic control housing forms an electronic control housing groove for accommodating the motor controller. The bottom of the electronic control housing groove partially overlaps with the outer peripheral wall of the motor housing, wherein: The integrated housing also includes a domain controller mounting slot for mounting a fixed domain controller. The domain controller mounting slot is formed by four side walls and the outer peripheral wall of the motor housing. The four side walls protrude from the outer peripheral wall of the motor housing in a direction away from the motor receiving slot. The domain controller mounting slot and the electrical control receiving slot are spaced apart from each other. The bottom of the domain controller mounting slot overlaps with the outer peripheral wall of the motor housing. The depth of the domain controller mounting slot is less than the depth of the electrical control receiving slot, and the area of ​​the bottom of the domain controller mounting slot is less than the area of ​​the bottom of the electrical control receiving slot.

2. The powertrain according to claim 1, characterized in that, The domain controller mounting slot is used to fix the slot-shaped domain controller cover plate. The domain controller cover plate is used to cover the opening of the domain controller mounting slot. The bottom of the domain controller cover plate is used to fix the circuit board. The circuit board and the bottom of the domain controller mounting slot are spaced apart from each other along the arrangement direction of the domain controller mounting slot and the domain controller cover plate.

3. The powertrain according to claim 2, characterized in that, The bottom of a portion of the domain controller cover plate is recessed in a direction away from the opening of the domain controller cover plate to form a groove. The circuit board covers the opening of the groove, and the space formed by the circuit board and the groove is used to accommodate the signal connector of the domain controller.

4. The powertrain according to claim 3, characterized in that, The distance between the groove opening of the domain controller cover and the bottom of the groove is greater than half the depth of the domain controller mounting groove, and the distance between the groove opening of the domain controller cover and the bottom of the groove is less than half the depth of the domain controller mounting groove.

5. The powertrain according to claim 3 or 4, characterized in that, One sidewall of the recess includes a signal interface mounting hole for securing a signal connector of the domain controller, the signal connector being electrically connected to the surface of the circuit board facing the recess.

6. The powertrain according to claim 5, characterized in that, One sidewall of the recess includes two spaced-apart signal interface mounting holes. The arrangement direction of the two signal interface mounting holes intersects the arrangement direction of the domain controller cover and the domain controller mounting slot. Each signal interface mounting hole is used to fix one of the signal connectors of the domain controller. Each signal connector is electrically connected to the surface of the circuit board facing the recess.

7. The powertrain according to any one of claims 3-6, characterized in that, The domain control cover includes a support protrusion that protrudes from the bottom of the groove toward the opening of the domain control cover. The support protrusion is used to support and fix the circuit board on the side facing the groove. The length of the support protrusion is less than the distance between the bottom of the groove and the opening of the domain control cover.

8. The powertrain according to any one of claims 3-7, characterized in that, The side of the circuit board away from the groove is used to fix the shielding cover. Along the arrangement direction of the domain controller cover and the domain controller mounting slot, the distance between the shielding cover and the bottom of the domain controller mounting slot is less than the depth of the domain controller mounting slot. The projection of the shielding cover on the bottom of the slot of the domain controller cover is spaced apart from the groove.

9. The powertrain according to any one of claims 1-8, characterized in that, The four sidewalls of the domain controller mounting slot include two opposing sidewalls arranged along the arrangement direction of the electrical control receiving slot and the domain controller mounting slot. The surface of one of the two sidewalls, which is closer to the electrical control receiving slot, includes a through hole that passes through the sidewall. The through hole is used for the signal connection line of the domain controller to pass through.

10. The powertrain according to claim 9, characterized in that, Along the extension direction of the sidewall where the through hole is located, the through hole and a groove of the domain controller cover plate are spaced apart.

11. The powertrain according to claim 9 or 10, characterized in that, The four sidewalls of the domain controller mounting slot include two third sidewalls, each of which is connected to the two sidewalls. One of the two third sidewalls is flush with the sidewall of a groove in the domain controller cover plate. The distance between the through hole and one of the third sidewalls along the direction in which the two third sidewalls are arranged is greater than the distance between the through hole and the other of the two third sidewalls.

12. The powertrain according to any one of claims 9-11, characterized in that, The lengths of the two sidewalls along their own extension direction are each smaller than the length of the third sidewall along its own extension direction.

13. The powertrain according to any one of claims 1-12, characterized in that, The four side walls of the domain control mounting slot are integrally formed with the outer peripheral wall of the motor housing.

14. The powertrain according to any one of claims 1-13, characterized in that, The projections of the four side walls of the domain control mounting slot along the arrangement direction of the domain control mounting slot and the electrical control receiving slot are located within the electrical control housing.

15. An electric vehicle, characterized in that, The vehicle includes a frame, wheels, and a powertrain as described in any one of claims 1-14, the powertrain being fixed to the frame and used for drive connection with the wheels and for driving the wheels to rotate.

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