Subframe assembly, electromagnetic suspension and vehicle

Abstract

The application discloses a subframe assembly, an electromagnetic suspension and a vehicle. The subframe assembly comprises a subframe body and a power structure. The subframe body comprises a first frame body and a second frame body. The first frame body comprises a first cross beam and two first connecting portions which are arranged at intervals on the first cross beam. The second frame body comprises a second cross beam and two second connecting portions which are arranged at intervals on the second cross beam. Each first connecting portion is detachably connected with one second connecting portion. The second cross beam is provided with a first cavity. Each second connecting portion is provided with a second cavity. The first cavity and each second cavity are in communication with each other to form a chamber. The power structure is arranged in the chamber. The power structure has an output shaft which is exposed to the second frame body. The power structure is arranged in the chamber, thereby saving the space outside the subframe body which is occupied by the external installation of the power structure.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a subframe assembly, an electromagnetic suspension, and a vehicle. Background Technology

[0002] The subframe is part of the vehicle's chassis structure, connected to the body, and supports and connects the powertrain, linkage mechanisms, steering gear, and other components of the steering system. The powertrain is typically mounted externally on the subframe, which takes up considerable installation space in the vehicle. Utility Model Content

[0003] This application provides a subframe assembly, an electromagnetic suspension, and a vehicle that can save installation space.

[0004] One embodiment of this application provides a subframe assembly, including a subframe body and a power structure. The subframe body includes a first frame and a second frame connected to each other. The first frame includes a first crossbeam and two first connecting portions spaced apart from the first crossbeam. The second frame includes a second crossbeam and two second connecting portions spaced apart from the second crossbeam. Each first connecting portion is detachably connected to one of the second connecting portions. The second crossbeam has a first cavity, and each second connecting portion has a second cavity. The first cavity and each second cavity are interconnected to form a chamber. The power structure is disposed in the chamber and has an output shaft that protrudes from the second frame.

[0005] In the aforementioned subframe assembly, the subframe body is formed by connecting the first connecting part and the second connecting part. The second frame has a cavity, in which the power structure is located. Compared to the power structure being externally mounted on the subframe body, this saves the space occupied by the external mounting of the power structure on the outside of the subframe body, thus allowing the subframe body assembly to occupy less installation space in the vehicle.

[0006] In some embodiments, each first connecting portion has two ribs at one end away from the first crossbeam, and the two ribs are spaced apart along the length of the first crossbeam; each second connecting portion has a mounting portion located between the two ribs, and the two ribs and the mounting portion are configured to be connected by fasteners.

[0007] The mounting part is inserted between the two ribs to position the first and second frames relative to each other, preventing misalignment. Fasteners allow for a detachable connection between the first and second frames, facilitating their assembly and disassembly.

[0008] In some embodiments, the power structure includes a control component, two motor components and two transmission components, each motor component is connected to a transmission component, a motor component and a transmission component connected to each other are disposed in the same second cavity, an output shaft is disposed in the transmission component, a control component is disposed in the first cavity, and the control component is electrically connected to the two motor components.

[0009] The second crossbeam is located between the two second connecting parts, which facilitates the electrical connection of the control component to the two motor components. Thus, the two motor components can be controlled simultaneously by one control component, and the two motor components can drive the controlled object to move through the speed change component.

[0010] In some embodiments, the second cavity is cylindrical, and the motor assembly and the transmission assembly are distributed in the second cavity along the length direction of the second crossbeam. The length direction of the second crossbeam is parallel to the length direction of the first crossbeam, and the output shaft extends outward from the outer side of the closed ring structure along the length direction of the second crossbeam to form a second connecting portion.

[0011] The output shaft extends in the same direction as the distribution of the motor assembly and the speed change assembly, which facilitates the assembly of the motor assembly and the speed change assembly. The output shaft extending out of the second connecting part can connect to and control the movement of the controlled component, and the connection between the output shaft and the controlled component is convenient.

[0012] In some embodiments, the subframe assembly further includes a cooling assembly disposed within a cavity to cool the powertrain.

[0013] Cooling components are used to cool the power structure, thereby preventing overheating and damage.

[0014] In some embodiments, a cooling jacket is provided in the second cavity, which divides the second cavity into a first cooling cavity and a first receiving cavity. The first receiving cavity is used to receive a motor assembly and / or a transmission assembly, and the first cooling cavity is used to receive a cooling medium.

[0015] A cooling jacket separates the first cooling chamber and the first receiving chamber to prevent the cooling medium from damaging the motor assembly and / or the transmission assembly.

[0016] In some embodiments, along the length of the second crossbeam, the cooling sleeve is provided with two retaining rings at intervals, both of which abut against the inner wall of the second connecting portion to separate the first cooling chamber.

[0017] The first cooling chamber is separated by two retaining rings to prevent the cooling medium in the first cooling chamber from entering the first receiving chamber and damaging the motor assembly and transmission assembly.

[0018] In some embodiments, each first cavity is provided with a partition extending along the length of the second crossbeam, the partition dividing the first cavity into a second cooling cavity and a second receiving cavity, the second receiving cavity being used to receive a control component, and the second cooling cavity being used to receive a cooling medium.

[0019] The second cooling chamber and the second receiving chamber are separated by a partition to prevent the cooling medium from damaging the control components.

[0020] In some embodiments, the first cooling chamber is connected to the second cooling chamber; the second connection is connected to a pipe, the pipe has a joint and is provided with a channel, the channel is connected to the first cooling chamber, the joint extends out to a second crossbeam, so that the cooling medium can enter the channel through the joint and flow into the first cooling chamber and the second cooling chamber.

[0021] The connector extending from the second crossbeam can be connected to an external cooling medium supply source, allowing the cooling medium to be introduced into the pipe channel through a connector of a pipe. The cooling medium sequentially enters a second cooling chamber, a first cooling chamber, and another second cooling chamber before entering the channel of another pipe and flowing back through the connector, thus enabling the coolant to circulate.

[0022] In some embodiments, the cooling sleeve is provided with a stop bar that abuts against the inner wall of the second connection portion. Along the height direction of the first crossbeam, the stop bar is constructed between the pipe and the second cooling chamber to guide the unidirectional flow of the cooling medium.

[0023] The stop bar stops the cooling medium from circulating in the first cooling chamber and guides the cooling medium into the channel or the second cooling chamber, thereby guiding the cooling medium to flow in one direction and preventing irregular flow of the cooling medium from reducing the cooling effect.

[0024] In some embodiments, the cavity is further provided with a wire groove for accommodating wires.

[0025] By using wire channels to hold the wires, it is possible to prevent the wires from getting tangled.

[0026] In some embodiments, the motor assembly is connected to a sensor module, which is disposed in the second cavity and electrically connected to the control component. The sensor module is used to sense the position and / or temperature of the motor assembly.

[0027] By sensing the position and temperature of the motor assembly through the sensor module, the control component controls the motor to work or stop the workpiece according to the condition of the motor assembly, which can prevent the power component from being damaged due to overheating or misalignment.

[0028] In some embodiments, the control component includes a first circuit board and a second circuit board that are electrically connected to each other. A first cavity is provided with a mounting plate that extends along the length of a second crossbeam. The first circuit board and the second circuit board are respectively disposed on both sides of the mounting plate. The first circuit board is configured to electrically connect to a sensor module, and the second circuit board is configured to electrically connect to a motor assembly.

[0029] The mounting plate is used to install and fix the positions of the first and second circuit boards to prevent them from shaking within the second crossbeam; the mounting plate separates the first and second circuit boards to prevent signal interference between them.

[0030] Embodiments of this application also provide an electromagnetic suspension, including a linkage mechanism, an elastic damping mechanism, and a subframe assembly as described in any of the above embodiments, wherein the subframe body is configured to connect to the main body. The linkage mechanism connects the output shaft of the power structure and the controlled component to cause relative movement between the controlled component and the main body under the drive of the power structure; the elastic damping mechanism is configured to connect the main body and the controlled component and elastically deforms when the controlled component moves relative to the main body.

[0031] In the aforementioned electromagnetic suspension, the subframe assembly controls the movement of the output shaft via a power structure. The output shaft, through a linkage mechanism, drives the movement of the controlled components. The controlled components move relative to the main body, and the elastic damping mechanism undergoes elastic deformation to support the main body. The subframe assembly occupies less installation space, leaving more space for the linkage mechanism and the elastic damping mechanism.

[0032] Embodiments of this application also provide a vehicle including a main body, a control device, and an electromagnetic suspension as described in any of the above embodiments. The control device is rotatably disposed on the main body, and the electromagnetic suspension is configured to connect the main body and the control device and drive the control device to move relative to the main body.

[0033] When the aforementioned electromagnetic suspension is used in a vehicle, the subframe assembly supports the main body and, through a linkage mechanism, allows the main body to move relative to the controlled components, thereby changing the posture of the main body. This electromagnetic suspension occupies relatively little installation space in the vehicle, saving space. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of an electromagnetic suspension in one embodiment of this application.

[0035] Figure 2 yes Figure 1 Side view of the electromagnetic suspension.

[0036] Figure 3 yes Figure 1 A schematic diagram of the middle subframe assembly.

[0037] Figure 4 yes Figure 3 Exploded view of the subframe assembly.

[0038] Figure 5 yes Figure 4 A partial view of the section view at point III-III.

[0039] Figure 6 yes Figure 4 Sectional view at point IV-IV.

[0040] Figure 7 yes Figure 4 A cross-sectional view at point VV.

[0041] Figure 8 yes Figure 3 A schematic diagram showing the connection of the intermediate cooling jacket to the motor assembly.

[0042] Figure 9 yes Figure 3 A cross-sectional view of the second connecting part.

[0043] Figure 10 yes Figure 3 A schematic diagram showing the connection between the motor assembly and the first circuit board.

[0044] Figure 11 yes Figure 3 A schematic diagram showing the connection between the motor assembly and the second circuit board.

[0045] Explanation of main component symbols

[0046] 100. Subframe assembly; 10. Subframe main body; 11. First frame; 111. First crossbeam; 112. First connecting part; 1121. Rib; 1122. First connecting hole; 12. Second frame; 12c. Chamber; 121c. First cavity; 122c. Second cavity; 1201. Cable tray; 121. Second crossbeam; 1211. Mounting plate; 121a. Channel body; 121b. Cover plate; 122. Second connecting part; 1221. Mounting part; 1222. Fastener; 1223. Limiting surface; 1225. End cap; 1226. Sealing cap; 1227. Limiting surface; 13. Pipe; 131. Channel; 132. Connector; 14. Bushing; 20. Power structure; 21. Motor assembly; 21a. Power shaft; 22. Transmission assembly; 2 21. Reducer; 222. Mounting housing; 22a. Input shaft; 22b. Output shaft; 23. Control assembly; 231. First circuit board; 2311. First connector; 232. Second circuit board; 2321. Second connector; 30. Cooling assembly; 31. Cooling jacket; 311. First cooling chamber; 312. First receiving chamber; 313. Retaining ring; 314. Stop bar; 32. Partition; 321. Second cooling chamber; 322. Second receiving chamber; 40. Sensor module; 41. Temperature sensor; 42. Position sensor; 200. Electromagnetic suspension; 210. Linkage mechanism; 220. Elastic damping mechanism; 230. Swing arm mechanism; 300. Wire; 400. Control device; 500. Main body; X, First direction; Y, Second direction; Z, Third direction.

[0047] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0048] To make the technical problems, technical solutions, and beneficial effects solved by this application clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0049] The subframe is part of the vehicle's chassis structure, connected to the body, and supports and connects the powertrain, linkage mechanisms, steering gear, and other components of the steering system. The powertrain is typically mounted externally on the subframe, which takes up considerable installation space in the vehicle.

[0050] One embodiment of this application provides a subframe assembly, including a subframe body and a power structure. The subframe body includes a first frame and a second frame connected to each other. The first frame includes a first crossbeam and two first connecting portions spaced apart from the first crossbeam. The second frame includes a second crossbeam and two second connecting portions spaced apart from the second crossbeam. Each first connecting portion is detachably connected to one of the second connecting portions. The second crossbeam has a first cavity, and each second connecting portion has a second cavity. The first cavity and the two second cavities are interconnected to form a chamber. The power structure is disposed in the chamber and has an output shaft that protrudes from the second frame.

[0051] In the aforementioned subframe assembly, the subframe body is formed by connecting the first connecting part and the second connecting part. The second frame has a cavity, in which the power structure is located. Compared to the power structure being externally mounted on the subframe body, this saves the space occupied by the external mounting of the power structure on the outside of the subframe body, thus allowing the subframe body assembly to occupy less installation space in the vehicle.

[0052] The embodiments of this application will be further described below with reference to the accompanying drawings. Unless otherwise specified, the various embodiments in this application can be combined with each other.

[0053] Please combine Figure 1 and Figure 2 One embodiment of this application provides a vehicle (not shown in the figure). The vehicle includes a main body 500, a control device 400, and an electromagnetic suspension 200. The control device 400 is rotatably disposed on the main body 500. The electromagnetic suspension 200 is configured to connect the main body 500 and the control device 400 and drive the control device 400 to move relative to the main body 500, thereby realizing the position adjustment between the control device 400 and the main body 500 to adjust the posture of the main body 500.

[0054] In some embodiments, the main body 500 is the vehicle body, and the control 400 is the wheel.

[0055] Please combine Figure 1 and Figure 2 In one embodiment, the electromagnetic suspension 200 includes a subframe assembly 100, a linkage mechanism 210, and an elastic damping mechanism 220. The subframe assembly 100 connects to and supports the main body 500. The linkage mechanism 210 connects the subframe assembly 100 and the control device 400 to move the control device 400 relative to the main body 500 under the drive of the subframe assembly 100. The elastic damping mechanism 220 connects the main body 500 and the control device 400 to elastically deform when the control device 400 moves relative to the main body 500.

[0056] In the aforementioned electromagnetic suspension 200, the main body 500 is supported by the subframe assembly 100, which drives the controlled element 400 to move relative to the main body 500. The elastic damping mechanism 220 can elastically deform relative to the main body 500 to support the main body 500 and provide elastic damping for it. The subframe assembly 100 occupies less installation space, leaving more space for the linkage mechanism 210 and the elastic damping mechanism 220.

[0057] In some embodiments, the electromagnetic suspension 200 further includes a swing arm mechanism 230, which is rotatably connected to the control unit 400 and the subframe assembly 100. An elastic damping mechanism 220 connects the main body 500 and the swing arm mechanism 230, such that the elastic damping mechanism 220 is connected to the control unit 400 via the swing arm mechanism 230, thereby enabling the swing arm mechanism 230 to support the elastic damping mechanism 220.

[0058] Please combine Figures 3 to 5 In one embodiment, the subframe assembly 100 includes a subframe body 10 and a power structure 20.

[0059] The subframe body 10 includes a first frame 11 and a second frame 12. The first frame 11 includes a first crossbeam 111 and two first connecting portions 112 spaced apart from each other on the first crossbeam 111. The second frame 12 includes a second crossbeam 121 and two second connecting portions 122 spaced apart from each other on the second crossbeam 121. Each first connecting portion 112 is detachably connected to one second connecting portion 122, so that the first frame 11 and the second frame 12 together form a closed ring structure. The second crossbeam 121 has a first cavity 121c, and each second connecting portion 122 has a second cavity 122c. The first cavity 121c and the two second cavities 122c are interconnected to form a chamber 12c.

[0060] The power structure 20 is located inside the chamber 12c, so that the power structure 20 does not occupy the external space of the second frame 12. Compared with the power structure 20 being externally installed on the subframe body 10, it saves the external space of the subframe body 10 occupied by the external installation of the power structure 20, thereby making the subframe body 10 assembly occupy less installation space in the vehicle.

[0061] The power structure 20 has an output shaft 22b exposed in the second frame 12, so that the power structure 20 can be connected to and control the movement of the controlled component 400 relative to the main body 500 via the output shaft 22b.

[0062] In some embodiments, when the subframe assembly 100 is used in the electromagnetic suspension 200, the subframe body 10 is connected to the main body 500, and the output shaft 22b exposed in the second frame 12 is connected to the connecting mechanism 210. The connecting mechanism 210 is connected to the receiving control 400 so that the connecting mechanism 210 transmits the torque of the power structure 20 to the receiving control 400, so that the receiving control 400 and the main body 500 move relative to each other under the action of the power structure 20.

[0063] In some embodiments, both the first crossbeam 111 and the second crossbeam 121 extend along a first direction X, that is, the length directions of the first crossbeam 111 and the second crossbeam 121 are parallel to the first direction X. Two first connecting portions 112 are spaced apart at both ends of the first crossbeam 111 along the first direction X. Two second connecting portions 122 are spaced apart at both ends of the second crossbeam 121 along the first direction X, such that each second connecting portion 122 can correspond to and connect to one first connecting portion 112, so that the first frame 11 and the second frame 12 can form a subframe body 10.

[0064] In some embodiments, the two first connecting portions 112 extend along the width direction of the first crossbeam 111, that is, the two first connecting portions 112 extend along the second direction, where the second direction Y and the first direction X are two horizontal directions that are perpendicular to each other.

[0065] In some embodiments, two second connecting portions 122 are symmetrically arranged on the same side of the second crossbeam 121 along the second direction Y. In some embodiments, the outer walls of both second connecting portions 122 are provided with reinforcing ribs to improve the structural strength of the second connecting portions 122.

[0066] In some embodiments, each first connecting portion 112 has two ribs 1121 at one end away from the first crossbeam 111. The two ribs 1121 are spaced apart along a first direction X, and each rib 1121 has a first connecting hole 1122. Each second connecting portion 122 has a mounting portion 1221 on the side opposite to the second crossbeam 121. The mounting portion 1221 has a second connecting hole that extends along the first direction X. A fastener 1222 passes through the second connecting hole and the two first connecting holes 1122, thereby connecting the first connecting portion 112 with the second connecting portion 122.

[0067] In some embodiments, the mounting portion 1221 is a protrusion.

[0068] The second connecting part 122 and the first connecting part 112 can be detachably connected by fastener 1222, which facilitates the connection and separation of the first frame 11 and the second frame 12.

[0069] In some embodiments, the power structure 20 includes a control component 23, two motor assemblies 21, and two transmission components 22. Each motor assembly 21 is coaxially connected to a transmission component 22, and the interconnected motor assemblies 21 and transmission components 22 are integrated into the same second cavity 122c. The control component 23 is located in the first cavity 121c, and the control component 23 is electrically connected to the two motor assemblies 21 respectively via wires 300. An output shaft 22b is located on the transmission component 22.

[0070] Along the first direction X, the second crossbeam 121 is located between the two second connecting parts 122. The control component 23 located on the second crossbeam 121 can be electrically connected to the motor components 21 located in the two second cavities 122c through wires 300, so that the two motor components 21 can be controlled to work simultaneously by one control component 23. The two motor components 21 can drive the output shaft 22b of the coaxially connected speed change component 22 to rotate, thereby causing the controlled device 400 to move.

[0071] In some embodiments, the second cavity 122c is cylindrical to fit the shape of the motor assembly 21 and the transmission assembly 22.

[0072] In some embodiments, the motor assembly 21 and the transmission assembly 22 are distributed in the second cavity 122c along a first direction X. The distribution direction of the motor assembly 21 and the transmission assembly 22 is the same as the extension direction of the output shaft 22b, which facilitates the assembly of the motor assembly 21 and the transmission assembly 22.

[0073] In some embodiments, in the two second connecting portions 122, two motor assemblies 21 are located between two speed-changing assemblies 22, and the output shaft 22b extends out of the second connecting portion 122 along the length direction of the second crossbeam 121. The motor assembly 21 is closer to the control assembly 23, which facilitates the control assembly 23 to electrically connect the two motor assemblies 21 respectively. The speed-changing assembly 22 facilitates the output shaft 22b extending out of the second connecting portion 122, connecting to and driving the controlled device 400 to move, thus facilitating the connection between the output shaft 22b and the controlled device 400.

[0074] In some embodiments, bushings 14 are provided at both ends of the first crossbeam 111 and the second crossbeam 121 along the first direction X, and the subframe body 10 contacts the main body 500 through the four bushings 14. The bushings 14 are made of rubber to prevent rigid collision between the subframe body 10 and the main body 500.

[0075] Please see Figure 5 The subframe assembly 100 also includes a cooling assembly 30, which is located in the chamber 12c of the second frame 12 to cool the power structure 20. The cooling assembly 30 cools the power structure 20, thereby preventing the power structure 20 from overheating and being damaged.

[0076] Please combine Figures 5 to 8 In some embodiments, the cooling assembly 30 includes a cooling sleeve 31 disposed within the second cavity 122c. The cooling sleeve 31 abuts against the inner wall of the second connecting portion 122 to divide the second cavity 122c into a first cooling cavity 311 and a first receiving cavity 312. The first receiving cavity 312 is used to receive the motor assembly 21 and / or the transmission assembly 22. The first cooling cavity 311 is used to receive a cooling medium so that the cooling medium absorbs the heat from the motor assembly 21 and / or the transmission assembly 22 to cool the motor assembly 21 and / or the transmission assembly 22.

[0077] In some embodiments, the cooling jacket 31 is fixedly disposed on the motor assembly 21, so that the cooling medium in the first cooling chamber 311 surrounds the motor assembly 21, thereby enabling the cooling medium to mainly absorb the heat generated by the motor assembly 21 to prevent the motor assembly 21 from overheating and being damaged.

[0078] In other embodiments, the cooling jacket 31 is fixedly fitted onto the motor assembly 21 and the transmission assembly 22, so that the cooling medium absorbs the heat generated by the motor assembly 21 and the transmission assembly 22.

[0079] In some embodiments, the cooling sleeve 31 is provided with two retaining rings 313 spaced apart along a first direction. The side of the two retaining rings 313 away from the motor assembly 21 abuts against the inner wall of the second connecting portion 122 to separate the first cooling chamber 311.

[0080] The cooling sleeve 31, the inner wall of the second connecting part 122, and the two retaining rings 313 form a first cooling cavity 311 in the second cavity 122c, which can prevent the leakage of cooling medium from causing damage to the motor assembly 21 and the transmission assembly 22 in the first receiving cavity 312.

[0081] In some embodiments, the retaining ring 313 is made of soft rubber. The retaining ring 313 is fixed to the cooling sleeve 31 by secondary injection molding.

[0082] Please see Figure 5 In some embodiments, the cooling assembly 30 further includes a partition 32 fixedly disposed in the first cavity 121c. The partition 32 extends along the length direction (first direction X) of the second crossbeam 121. The partition 32 divides the first cavity 121c into a second cooling cavity 321 and a second receiving cavity 322. The second receiving cavity 322 is used to receive the control assembly 23. The second cooling cavity 321 is used to receive a cooling medium so that the cooling medium absorbs the heat of the control assembly 23, thereby cooling the control assembly 23.

[0083] In some embodiments, the cooling medium is a liquid medium.

[0084] Please see Figure 6 In some embodiments, a wire trough 1201 is provided in the chamber 12c of the second frame 12. The wire 300 connecting the control component 23 and the motor component 21 passes through the wire trough 1201. The wire trough 1201 is located in the first receiving cavity 312 and the second receiving cavity 322.

[0085] The second frame 12 shields the current within the conductor 300, thereby reducing electromagnetic interference to the surrounding environment. The wire trough 1201 restricts the position of the conductor 300, preventing it from tangling.

[0086] Please see Figure 7 In some embodiments, the second cooling chamber 321 is connected to two first cooling chambers 311, so that the second cooling chamber 321 and the two first cooling chambers 311 can share the cooling medium, which facilitates the centralized introduction or discharge of the cooling medium.

[0087] Please see Figure 5 In some embodiments, each second connection 122 is connected to a conduit 13. The conduit 13 has a connector 132 and a passage 131 extending through it. The passage 131 communicates with the first cooling chamber 311. The connector 132 extends into a second crossbeam 121, allowing the cooling medium to enter the passage 131 through the connector 132.

[0088] Connector 132 protrudes from the second crossbeam 121, facilitating connection of connector 132 to the vehicle's cooling system. The cooling system can supply cooling medium through connector 132 into channel 131. The cooling system can also receive the heat-absorbing cooling medium discharged from connector 132 and cool the heat-absorbing cooling medium, thereby realizing the recycling of the cooling medium.

[0089] In some embodiments, the cooling system connects the joints 132 of two pipes 13. The cooling system introduces cooling medium into a channel 131 through the joints 132 of one pipe 13. After the cooling medium enters a first cooling chamber 311, a second cooling chamber 321 and another first cooling chamber 311, it enters the channel 131 of the other pipe 13 and flows back to the cooling system through the joints 132 of the pipe 13, thereby realizing the circulation of the cooling medium.

[0090] Please combine Figure 7 and Figure 8 In some embodiments, a stop strip 314 is provided on the side of the cooling sleeve 31 facing the sidewall of the second connecting portion 122, so that the stop strip 314 abuts against the inner wall of the second connecting portion 122. The stop strip 314 extends along the first direction X, and two retaining rings 313 are fixedly connected to both ends of the stop strip 314. The height direction of the second crossbeam 121 / first crossbeam 111 is defined as the third direction Z, which is perpendicular to the first direction X and the second direction Y. Along the third direction Z, the stop strip 314 is disposed between a pipe 13 and the second cooling chamber 321, so that the stop strip 314 can guide the cooling medium to flow in one direction (see reference). Figure 7 (direction a in the middle).

[0091] When the cooling medium flows in the first cooling chamber 311, the stop bar 314 can stop the cooling medium from circulating in the first cooling chamber 311, so that the cooling medium enters the channel 131 or enters the second cooling chamber 321, thereby guiding the cooling medium to flow in one direction.

[0092] The stop bar 314 guides the cooling medium to flow in one direction, preventing the mixing of cooling media with different temperatures due to irregular flow, which would reduce the cooling effect. Therefore, the unidirectional flow of the cooling medium can remove more heat generated by the power structure 20 during operation, resulting in better liquid cooling of the power structure 20. Specifically, the cooling medium is at a lower temperature when injected into the first cooling chamber 311, and its temperature increases the longer it flows within the first cooling chamber 311.

[0093] In some embodiments, the stop strip 314 is made of soft rubber. The stop strip 314 and the two retaining rings 313 are fixed to the cooling sleeve 31 by secondary injection molding.

[0094] Please see Figure 9In some embodiments, the inner wall of the second connecting portion 122 is provided with a limiting surface 1224, which is located within the second cavity 122c. The limiting surface 1224 is used to abut against a retaining ring 313 near the transmission assembly 22 to position the cooling sleeve 31 within the second connecting portion 122, thereby positioning the motor assembly 21 within the second connecting portion 122.

[0095] In some embodiments, the motor assembly 21 includes a motor. The speed change assembly 22 includes a reducer 221. The motor's drive shaft 21a is coaxially connected to the reducer 221's input shaft 22a. The motor drives the drive shaft 21a to rotate, enabling the output shaft 22b to transmit power to the controlled device 400.

[0096] The motor can output power, and the reducer 221 can convert the high speed of the motor into a low speed, while outputting a greater rotational force to better drive the movement of the controlled device 400.

[0097] In some embodiments, the reducer 221 is provided with a mounting shell 222, and the mounting shell 222 and the second connecting part 122 are fixed together by inlay die casting.

[0098] In some embodiments, the second connecting portion 122 has two ports through which the reducer 221 is installed into the mounting housing 222. One port of the second connecting portion 122 near the output shaft 22b is closed to confine the reducer 221 within the second connecting portion 122. The output shaft 22b passes through the second connecting portion 122 and is rotatable relative to the mounting housing 222. The cooling sleeve 31 and the motor are installed into the mounting housing 222 through the other unclosed port. After the wire 300 is placed into the wire groove 1201, the other port is sealed by an end cap 1225. The end cap 1225 is bolted to the second connecting portion 122.

[0099] In some embodiments, a sensor module 40 is connected to the motor and is disposed within the second connection portion 122. The sensor module 40 is used to sense the position and / or temperature of the motor. The sensor module 40 is electrically connected to the control component 23, enabling the control component 23 to control the operation of the motor based on the sensing results of the sensor module 40.

[0100] In some embodiments, the sensor module 40 includes a position sensor 42 disposed on the end cover 1225. The position sensor 42 is used to sense the position of the motor and transmit the position information to the control component 23 via the wire 300.

[0101] After installing the position sensor 42, the wire 300 is placed into the wire groove 1201, and the end cap 1225 is connected to the sealing cap 1226 to seal the sensor. The sealing cap 1226 is made of plastic.

[0102] In some embodiments, the position sensor 42 includes a rotary transformer sensor, a photoelectric encoder sensor, or a magnetic encoder sensor. This application does not limit the choice of sensor, and those skilled in the art can make the selection based on the actual situation.

[0103] In some embodiments, the sensor module 40 includes a temperature sensor 41 (see figure). Figure 10 Temperature sensor 41 is located on the outer periphery of the motor and sandwiched between the motor and cooling jacket 31. Temperature sensor 41 is used to sense the temperature of the motor and transmit the temperature to control component 23 through wire 300. When the motor temperature is too high, control component 23 controls the motor to operate at low speed or stop working to protect the motor and prevent damage.

[0104] In some embodiments, the temperature sensor 41 is a resistance temperature detector (RTD) sensor or a thermocouple sensor. This application does not limit this, and those skilled in the art can choose according to the actual situation.

[0105] Please see Figure 5 In some embodiments, the control component 23 includes a first circuit board 231 and a second circuit board 232. The first circuit board 231 is electrically connected to the second circuit board 232. The first circuit board 231 and the second circuit board 232 are spaced apart along a second direction Y. The first circuit board 231 is electrically connected to the sensor module 40 via a wire 300. The second circuit board 232 is electrically connected to the motor via a wire 300. The first circuit board 231 is used to receive and analyze the sensing results of the sensor module 40, and to send commands to the second circuit board 232 according to the sensing results. The second circuit board 232 controls the motor to operate according to the commands.

[0106] In some embodiments, a mounting plate 1211 is provided inside the first connecting portion 112. The first circuit board 231 and the second circuit board 232 are respectively disposed on opposite sides of the mounting plate 1211 along the second direction Y, so as to mount and separate the first circuit board 231 and the second circuit board 232.

[0107] Mounting plate 1211 secures the first circuit board 231 and the second circuit board 232 with bolts to prevent them from wobbling within the second crossbeam 121. Mounting plate 1211 also separates the first circuit board 231 and the second circuit board 232 to prevent signal interference between them.

[0108] In some embodiments, the mounting plate 1211 is made of aluminum alloy or engineering plastic.

[0109] Please see Figure 10 and Figure 11In some embodiments, the control component 23 further includes a first connector 2311 and a second connector 2321. The first connector 2311 is electrically connected to the first circuit board 231 via a wire 300, and the second connector 2321 is electrically connected to the second circuit board 232 via a wire 300. The first connector 2311 is used to electrically connect to the vehicle's control system, and the second connector 2321 is used to connect to the vehicle's power supply.

[0110] Due to the high cost of connectors, the power structure 20 is integrated into the cavity 12c of the second frame 12. The motor and control component 23, and the sensor module 40 and control component 23 are directly connected by wires 300, which saves the connectors between the motor and control component 23 and between the sensor module 40 and control component 23, thus greatly saving costs.

[0111] Please see Figure 4 and Figure 5 In some embodiments, the second crossbeam 121 includes a channel body 121a and a cover plate 121b, the cover plate 121b being connected to the channel body 121a by fasteners 1222 to form a hollow cuboid structure of the second crossbeam 121.

[0112] During the installation of the control component 23, the second circuit board 232 is bonded to the partition 32, and the partition 32 is connected to the groove 121a by fasteners 1222. Sealing is applied to the gaps to prevent the cooling medium of the first cooling chamber 311 from leaking into the first receiving chamber 312. The wire 300 connected to the motor in the second wire groove 1201 is connected to the second circuit board 232 and placed in the first wire groove 1201. The second connector 2321 is connected to the second circuit board 232, and the first circuit board 231 is electrically connected to one end of a wire 300.

[0113] The first circuit board 231 is connected to the mounting plate 1211 via fastener 1222. The mounting plate 1211 is connected to the second circuit board 232 via fastener 1222. The wire 300 connected to the sensor module 40 in the second wire groove 1201 is connected to the first circuit board 231 and placed into the first wire groove 1201. The first connector 2311 is connected to the first circuit board 231. The second circuit board 232 is electrically connected to the other end of the wire 300, so that the first circuit board 231 and the second circuit board 232 are electrically connected.

[0114] The cover plate 121b is connected to the groove body 121a by fasteners 1222, and the gap between the groove body 121a and the cover plate 121b is sealed with glue.

[0115] In some embodiments, the fastener 1222 includes screws, bolts, threaded rods, or pins. This application does not limit the choice of fastener, and those skilled in the art can select one according to the actual situation.

[0116] Terminology Explanation

[0117] In this application, unless otherwise expressly defined, the terms "installation" and "connection" should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0118] The terms “first,” “second,” and “third” used in this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0119] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0120] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A subframe assembly, characterized in that, include: The subframe body includes a first frame and a second frame that are connected to each other. The first frame includes a first crossbeam and two first connecting parts spaced apart from the first crossbeam. The second frame includes a second crossbeam and two second connecting parts spaced apart from the second crossbeam. Each first connecting part is detachably connected to one of the second connecting parts. The second crossbeam is provided with a first cavity, and each second connecting part is provided with a second cavity. The first cavity and each second cavity are interconnected to form a chamber. A power structure is disposed within the cavity, the power structure having an output shaft that protrudes from the second frame.

2. The subframe assembly as described in claim 1, characterized in that, Each of the first connecting parts is provided with two ribs at the end away from the first crossbeam, and the two ribs are spaced apart along the length of the first crossbeam. Each of the second connecting portions is provided with a mounting portion, the mounting portion being disposed between the two ribs, and the two ribs and the mounting portion being configured to be connected by fasteners.

3. The subframe assembly as described in claim 1, characterized in that, The second cavity is cylindrical. The power structure includes a control component, two motor components and two transmission components. Each motor component is connected to one transmission component. A motor component and a transmission component connected to each other are located in the same second cavity. The output shaft is located in the transmission component. The control component is located in the first cavity and is electrically connected to the two motor components.

4. The subframe assembly as described in claim 3, characterized in that, The motor assembly and the transmission assembly are distributed in the second cavity along the length direction of the second crossbeam, the length direction of the second crossbeam is parallel to the length direction of the first crossbeam, and the output shaft extends out to the second connecting portion along the length direction of the second crossbeam.

5. The subframe assembly as described in claim 1, characterized in that, The subframe assembly also includes a cooling assembly located within the cavity to cool the powertrain structure.

6. The subframe assembly as described in claim 3, characterized in that, The second cavity is provided with a cooling jacket, which divides the second cavity into a first cooling cavity and a first receiving cavity. The first receiving cavity is used to receive the motor assembly and / or the transmission assembly, and the first cooling cavity is used to receive the cooling medium.

7. The subframe assembly as described in claim 6, characterized in that, Along the length of the second crossbeam, the cooling sleeve is provided with two retaining rings at intervals, and both retaining rings abut against the inner wall of the second connecting part to separate the first cooling chamber.

8. The subframe assembly as described in claim 6, characterized in that, Each of the first cavities is provided with a partition extending along the length of the second crossbeam. The partition divides the first cavity into a second cooling cavity and a second receiving cavity. The second receiving cavity is used to receive the control component, and the second cooling cavity is used to receive the cooling medium.

9. The subframe assembly as described in claim 8, characterized in that, The first cooling chamber is connected to the second cooling chamber; The second connection is connected to a pipe, the pipe having a joint and a through channel that connects to the first cooling chamber. The joint extends out to form the second crossbeam, allowing the cooling medium to enter the channel through the joint and flow into the first and second cooling chambers.

10. The subframe assembly as described in claim 9, characterized in that, The cooling sleeve is provided with a stop strip, which abuts against the inner wall of the second connection part. Along the height direction of the first crossbeam, the stop strip is constructed between the pipe and the second cooling chamber to guide the cooling medium to flow in one direction.

11. The subframe assembly as described in claim 1, characterized in that, The cavity is also provided with a wire groove, which is used to accommodate wires.

12. The subframe assembly as described in claim 3, characterized in that, The motor assembly is connected to a sensor module, which is located in the second cavity and electrically connected to the control component. The sensor module is used to sense the position of the motor assembly and / or the temperature of the motor assembly.

13. The subframe assembly as described in claim 12, characterized in that, The control component includes a first circuit board and a second circuit board that are electrically connected to each other. The first cavity is provided with a mounting plate that extends along the length of the second crossbeam. The first circuit board and the second circuit board are respectively located on both sides of the mounting plate. The first circuit board is configured to electrically connect to the sensor module, and the second circuit board is configured to electrically connect to the motor assembly.

14. An electromagnetic suspension, characterized in that, include: The subframe assembly as described in any one of claims 1 to 13, wherein the subframe body is configured as a connecting body member; A linkage mechanism connects the output shaft of the power structure and the controlled component, so as to cause the controlled component to move relative to the main body under the drive of the power structure; An elastic damping mechanism is configured to connect the main body and the controlled object, and to elastically deform when the controlled object moves relative to the main body.

15. A vehicle, characterized in that, include: Main components; Subject to the control, the main body component is rotated; The electromagnetic suspension as described in claim 14, wherein the electromagnetic suspension is configured to connect the main body and the controlled object, and to drive the controlled object to move relative to the main body.

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