Power structure, auxiliary frame assembly, electromagnetic suspension and vehicle

Abstract

The invention discloses a power structure, an auxiliary frame assembly, an electromagnetic suspension and a vehicle. The power structure comprises a first shell and a second shell which are connected with each other, and further comprises a motor assembly, a speed change assembly, a control assembly and a cooling assembly. The motor assembly is arranged in the first shell; the speed change assembly is connected to the motor assembly and arranged in the first shell. The control assembly is connected to the motor assembly, and the control assembly is arranged in the second shell; the cooling assembly comprises a first cooling part and a second cooling part which are communicated with each other, the first cooling part is arranged between the first shell and the motor assembly and / or the speed change assembly, and the second cooling part is arranged between the second shell and the control assembly. The motor assembly and the control assembly are cooled through the cooling assembly to prevent the motor assembly or the control assembly from being overheated to damage the power structure; due to the integrated arrangement of the power structure, the stability of connection between the control assembly and the motor assembly is improved, and space can be saved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a power structure, a subframe assembly, an electromagnetic suspension, and a vehicle. Background Art

[0002] The subframe is part of the vehicle's chassis structure, connected to the vehicle body. It supports and connects the powertrain, linkage, and steering gear of the steering system. Traditionally, the powertrain is mounted externally on the subframe, which takes up a significant amount of space within the vehicle. Summary of the Invention

[0003] Embodiments of the present application provide a power structure, a subframe assembly, an electromagnetic suspension, and a vehicle that can save installation space.

[0004] An embodiment of the present application provides a power structure comprising a first housing and a second housing connected to each other, a motor assembly, a speed change assembly, a control assembly, and a cooling assembly. The motor assembly is disposed within the first housing; the speed change assembly is connected to the motor assembly and is also disposed within the first housing; the control assembly is connected to the motor assembly and is disposed within the second housing; and the cooling assembly comprises a first cooling portion and a second cooling portion connected to each other, the first cooling portion being disposed between the first housing and the motor assembly and / or the speed change assembly, and the second cooling portion being disposed between the second housing and the control assembly.

[0005] In the above power structure, the interconnected motor assembly and speed change assembly are built into a first shell, the control assembly is built into a second shell, and the first shell is connected to the second shell, so that the control assembly is conveniently electrically connected to the motor assembly through a wire, so that the control assembly can control the motor assembly to drive the speed change assembly to work, thereby causing the speed change assembly to drive the controlled component to move; the motor assembly and the control assembly are cooled by the cooling assembly to prevent the motor assembly or the control assembly from overheating and causing damage to the power structure; the motor assembly, speed change assembly, wires, control assembly and cooling assembly are all integrated into the first shell and the second shell to realize the integrated setting of the power structure, improve the stability of the connection between the control assembly and the motor assembly, and reduce the unnecessary shells of the motor assembly, speed change assembly and control assembly to save space.

[0006] In some embodiments, the first cooling portion includes a cooling jacket, which forms a first cooling cavity and a first accommodating cavity in the first shell, and the first accommodating cavity is used to accommodate the motor assembly and / or the speed change assembly.

[0007] The interior of the first housing is divided into a first cooling cavity and a first accommodating cavity by the cooling jacket, so that the cooling medium in the first cooling cavity can cool the motor assembly and / or the speed change assembly in the first accommodating cavity.

[0008] In some embodiments, two retaining rings are provided at both ends of the cooling jacket along the length direction of the first shell, and the two retaining rings abut against the inner wall of the first shell to separate the first cooling cavity.

[0009] The first cooling cavity is separated by two retaining rings to prevent the cooling medium in the first cooling cavity from entering the first accommodating cavity and damaging the motor assembly and the speed change assembly.

[0010] In some embodiments, the second cooling part includes a partition, which extends along the length direction of the second shell, and forms a second accommodating cavity between the upper side of the partition and the second shell. The second accommodating cavity is used to accommodate the control component, and a second cooling cavity is formed between the lower side of the partition and the second shell.

[0011] A second cooling cavity and a second accommodating cavity are formed by the partition, so that the cooling medium in the second cooling cavity can cool the control component in the second accommodating cavity.

[0012] In some embodiments, the first shell is connected to a pipeline, the pipeline includes a connecting interface and a channel, the channel is connected to the first cooling cavity, and the cooling medium can enter the channel through the interface.

[0013] The cooling medium can be introduced into the channel through the interface of the pipeline, so that the cooling medium enters the first cooling cavity.

[0014] In some embodiments, a stop bar is provided on the side of the cooling jacket facing the first shell, the stop bar abuts against the inner wall of the first shell, and is constructed between the pipeline and the second cooling cavity along the height direction of the first shell to guide the cooling medium to flow in one direction.

[0015] The stop bar stops the cooling medium from circulating in the first cooling cavity and guides the cooling medium into the channel or the second cooling cavity, thereby guiding the cooling medium to flow in one direction, thereby improving the cooling efficiency and enhancing the cooling effect.

[0016] In some embodiments, a limiting surface is provided in the first housing, and the limiting surface is used to abut against a retaining ring provided near the speed change assembly to position the cooling jacket.

[0017] The installation position of the motor assembly in the first housing can be positioned by the limiting surface abutting against the retaining ring.

[0018] In some embodiments, a first wire groove is provided in the first shell, and a second wire groove is provided in the second shell. The first wire groove is connected to the second wire groove, and both the first wire groove and the second wire groove are used to accommodate wires.

[0019] The wires are located inside the second shell and the first shell, which can reduce the electromagnetic interference caused by the current in the wires to the surrounding area; the wires are accommodated by the first wire groove and the second wire groove, which can prevent the wires from being entangled.

[0020] In some embodiments, the power structure includes two motor assemblies, two speed transmission assemblies and two first housings, each speed transmission assembly is connected to a motor assembly, and the interconnected speed transmission assemblies and motor assemblies are arranged in the same first housing, and the two first housings are connected to the second housing at intervals along the length direction of the second housing.

[0021] The two first housings are spaced apart from each other within the second housing, facilitating the electrical connection of the control assembly to the two motor assemblies via wires. This allows the control assembly to simultaneously control both motor assemblies, driving the controlled components through the speed change assembly. The two motor assemblies, speed change assembly, wires, and control assembly are integrated within the first and second housings, achieving an integrated powertrain design and improving the stability of the connection between the control assembly and the two speed change assemblies.

[0022] In some embodiments, the motor assembly includes a motor, the speed change assembly includes a reducer, the power shaft of the motor is coaxially connected to the input shaft of the reducer, the motor drives the power shaft to rotate, so that the output shaft of the reducer can transmit power to the controlled device.

[0023] The motor can output power, and the reducer can convert the high speed of the motor into a low speed, while outputting a greater rotational force to better drive the controlled object to move.

[0024] In some embodiments, the motor assembly is connected to a sensor module, which is disposed in the first housing and electrically connected to the control assembly. The sensor module is used to sense the position and / or temperature of the motor assembly.

[0025] The sensor module senses the condition of the motor assembly, and the control assembly controls the motor to work or stop the workpiece according to the condition of the motor assembly, which can prevent damage to the power assembly.

[0026] In some embodiments, the control component includes a first circuit board and a second circuit board electrically connected to each other, the first circuit board and the second circuit board are arranged at an interval, the first circuit board is electrically connected to the sensor module, and the second circuit board is electrically connected to the motor assembly. The first circuit board is used to receive and analyze the sensing results of the sensor module and send instructions to the second circuit board. The second circuit board controls the operation of the motor assembly according to the instructions.

[0027] Disposing the first circuit board and the second circuit board at a distance from each other can prevent signal interference between the first circuit board and the second circuit board.

[0028] In some embodiments, a mounting plate is provided in the second shell, and the mounting plate extends along the length direction of the second shell. The first circuit board and the second circuit board are respectively provided on both sides of the mounting plate to install and separate the first circuit board and the second circuit board.

[0029] The mounting plate can install and fix the first circuit board and the second circuit board to prevent the first circuit board and the second circuit board from shaking in the second shell; the mounting plate can also separate the first circuit board and the second circuit board to further prevent signal interference between the first circuit board and the second circuit board.

[0030] An embodiment of the present application also provides a subframe assembly, including a crossbeam, two longitudinal beams and a power structure as in the previous embodiment, wherein the crossbeam extends along the length direction of the second shell; the two longitudinal beams both extend along the width direction of the second shell, and along the length direction of the second shell, the two longitudinal beams are respectively arranged at opposite ends of the crossbeam; along the width direction of the second shell, one end of each longitudinal beam facing away from the crossbeam is connected to a first shell, or connected to the second shell, so that the crossbeam, the two longitudinal beams, the second shell and the two first shells together form a closed ring structure.

[0031] In the aforementioned subframe assembly, the second housing and the crossbeam extend in the same direction, allowing the ends of the two longitudinal beams to connect to the crossbeam and the second housing / first housing, respectively. This allows the first housing, the two second housings, the two longitudinal beams, and the crossbeam to collectively form a closed loop structure. Specifically, the first housing, the two second housings, the two longitudinal beams, and the crossbeam collectively form the subframe. The motor assembly, the speed change assembly, and the control assembly are integrated within the first and second housings, allowing the first and second housings to both house the powertrain and serve as another crossbeam for the subframe. Compared to mounting the powertrain externally on the subframe, this reduces the space occupied by the externally mounted powertrain, resulting in a smaller installation space for the subframe assembly.

[0032] In some embodiments, two ribs are provided at one end of the longitudinal beam away from the transverse beam, and the two ribs are spaced apart along the length direction of the second shell; a ridge is provided at one end of each first shell away from the second shell, and the ridge is provided between the two ribs, and the two ribs and the ridge are configured to be connected by threaded fasteners.

[0033] The first housing, the second housing and the longitudinal beam are detachably connected by threaded fasteners, which facilitates installation and disassembly of the subframe assembly.

[0034] An embodiment of the present application further provides an electromagnetic suspension system comprising a connecting rod mechanism, an elastic damping mechanism, and a subframe assembly as described in the previous embodiment, wherein the subframe assembly is configured to connect to a main body. The connecting rod mechanism connects the output shaft of a transmission assembly and a control unit, thereby enabling relative movement of the control unit and the main body under the drive of the transmission assembly. The elastic damping mechanism is configured to connect the main body and the control unit and elastically deforms when the control unit and the main body move relative to each other.

[0035] In the aforementioned electromagnetic suspension, the subframe assembly controls the movement of the output shafts of both transmission assemblies through a control assembly. These output shafts drive the controlled component through a connecting rod mechanism. The controlled component and the main component move relative to each other, and the elastic damping mechanism deforms elastically to support the main component. The subframe assembly occupies less installation space, leaving more space for the connecting rod mechanism and elastic damping mechanism.

[0036] An embodiment of the present application also provides a vehicle, comprising a vehicle body, wheels, and an electromagnetic suspension as in the previous embodiment, wherein the wheels are rotatably arranged on the vehicle body, and the electromagnetic suspension is configured to connect the vehicle body and the wheels and drive the wheels to move relative to the vehicle body.

[0037] When the electromagnetic suspension is used in a vehicle, the controlled components are the wheels, the main component is the vehicle body, and the subframe assembly supports the vehicle body. The subframe assembly also enables relative movement between the vehicle body and the wheels through a linkage mechanism to change the vehicle's posture. This electromagnetic suspension occupies less installation space in the vehicle, saving space. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 Schematic diagram of an electromagnetic suspension in one embodiment of the present application.

[0039] Figure 2 yes Figure 1 Side view of the electromagnetic suspension.

[0040] Figure 3 yes Figure 1 Schematic diagram of the structure of the middle subframe assembly.

[0041] Figure 4 yes Figure 3 Exploded view of the middle subframe assembly.

[0042] Figure 5 yes Figure 4 Partial view of the cross-sectional view at III-III.

[0043] Figure 6 yes Figure 4 Cross-sectional view at IV-IV in the middle.

[0044] Figure 7 yes Figure 4 Cross-sectional view at VV in the middle.

[0045] Figure 8 yes Figure 3 Schematic diagram of the cooling jacket connected to the motor assembly.

[0046] Figure 9 yes Figure 3 A cross-sectional view of the first shell.

[0047] Figure 10 yes Figure 3 Schematic diagram of the connection between the motor assembly and the first circuit board.

[0048] Figure 11 yes Figure 3 Schematic diagram of the connection between the motor assembly and the second circuit board.

[0049] Description of main component symbols 100. Electromagnetic suspension; 10. Subframe assembly; 11. Crossbeam; 12. Longitudinal beam; 121. Rib; 122. First connecting hole; 123. Threaded fastener; 13. Rubber bushing; 14. First housing; 14a. Rib; 141. First wire trough; 142. First cooling chamber; 143. First accommodating chamber; 144. Limiting surface; 145. End cover; 146. Sealing cover; 15. Second housing; 15a. Slotted body; 15b. Cover plate; 151. Second wire trough; 152. Second cooling chamber; 153. Second accommodating chamber; 154. Mounting plate; 16. Pipeline; 161. Passageway; 162. Interface; 20. Power structure; 21. Motor assembly; 211. Motor; 211a. Power shaft; 22. Transformer Speed ​​component; 21. Reducer; 2211. Mounting shell; 221a. Input shaft; 221b. Output shaft; 23. Control component; 231. First circuit board; 2311. First connector; 232. Second circuit board; 2321. Second connector; 24. Sensor module; 241. Temperature sensor; 242. Position sensor; 25. Cooling component; 251. First cooling part; 2511. Cooling jacket; 2512. Stop bar; 2513. Stop ring; 252. Second cooling part; 2521. Partition; 30. Connecting rod mechanism; 40. Elastic shock absorbing mechanism; 50. Swing arm mechanism; 200. Wire; 300. Wheel; 400. Vehicle body; X, first direction; Y, second direction; Z, third direction.

[0050] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0053] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0054] The term "perpendicular" is used to describe an ideal position between two components. In actual production or use, the position between two components may be approximately perpendicular.

[0055] Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments.

[0056] The subframe is part of the vehicle's chassis structure, connected to the vehicle body. It supports and connects the powertrain, linkage, and steering gear of the steering system. Traditionally, the powertrain is mounted externally on the subframe, which takes up a significant amount of space within the vehicle.

[0057] An embodiment of the present application provides a power structure comprising a first housing and a second housing connected to each other, a motor assembly, a speed change assembly, a control assembly, and a cooling assembly. The motor assembly is disposed within the first housing; the speed change assembly is connected to the motor assembly and is also disposed within the first housing; the control assembly is connected to the motor assembly and is disposed within the second housing; and the cooling assembly comprises a first cooling portion and a second cooling portion connected to each other, the first cooling portion being disposed between the first housing and the motor assembly and / or the speed change assembly, and the second cooling portion being disposed between the second housing and the control assembly.

[0058] In the above power structure, the interconnected motor assembly and speed change assembly are built into a first shell, the control assembly is built into a second shell, and the first shell is connected to the second shell, so that the control assembly is conveniently electrically connected to the motor assembly through a wire, so that the control assembly can control the motor assembly to drive the speed change assembly to work, thereby causing the speed change assembly to drive the controlled component to move; the motor assembly and the control assembly are cooled by the cooling assembly to prevent the motor assembly or the control assembly from overheating and causing damage to the power structure; the motor assembly, speed change assembly, wires, control assembly and cooling assembly are all integrated into the first shell and the second shell to realize the integrated setting of the power structure, improve the stability of the connection between the control assembly and the motor assembly, and reduce the unnecessary shells of the motor assembly, speed change assembly and control assembly to save space.

[0059] The following further describes the embodiments of the present application in conjunction with the accompanying drawings. In the absence of conflict, the various embodiments of the present application can be combined with each other.

[0060] Please combine Figure 1 and Figure 2 An embodiment of the present application provides a vehicle (not shown), which includes a vehicle body 400, wheels 300 and an electromagnetic suspension 100. The wheels 300 are rotatably arranged on the vehicle body 400. The electromagnetic suspension 100 is configured to connect the vehicle body 400 and the wheels 300, and drive the wheels 300 to move relative to the vehicle body 400, thereby achieving position adjustment between the wheels 300 and the vehicle body 400 to adjust the posture of the vehicle body 400.

[0061] Please combine Figure 1 and Figure 2 The present application also provides an electromagnetic suspension system 100, which includes a subframe assembly 10, a linkage mechanism 30, and an elastic shock-absorbing mechanism 40. The subframe assembly 10 connects to and supports the main body. The linkage mechanism 30 connects the subframe assembly 10 and the controlled component, allowing the controlled component to move relative to the main body under the drive of the subframe assembly 10. The elastic shock-absorbing mechanism 40 connects the main body and the controlled component, allowing the controlled component to elastically deform when the controlled component and the main body move relative to each other.

[0062] In the electromagnetic suspension system 100, the subframe assembly 10 supports the main component and drives the controlled component to move relative to the main component. The elastic damping mechanism 40 elastically deforms as the controlled component moves relative to the main component, thereby supporting and damping the main component. The subframe assembly 10 occupies a relatively small installation space, leaving more space for the connecting rod mechanism 30 and the elastic damping mechanism 40.

[0063] In some embodiments, the electromagnetic suspension system 100 further includes a swing arm mechanism 50, which rotatably connects the controlled component and the subframe assembly 10. The elastic shock absorbing mechanism 40 connects the main body and the swing arm mechanism 50, so that the elastic shock absorbing mechanism 40 is connected to the controlled component via the swing arm mechanism 50, thereby enabling the swing arm mechanism 50 to support the elastic shock absorbing mechanism 40.

[0064] In some embodiments, the main body is the vehicle body 400 , and the controlled part is the wheel 300 .

[0065] Please combine Figures 3 to 5, an embodiment of the present application also provides a subframe assembly 10, the subframe assembly 10 includes a crossbeam 11, two longitudinal beams 12 and a power structure 20. The power structure 20 includes a first shell 14, a second shell 15, a motor assembly 21, a speed change assembly 22 and a control assembly 23. The first shell 14 is connected to the second shell 15, and the first shell 14 and the second shell 15 both have cavities that are interconnected. The motor assembly 21 is coaxially connected to the speed change assembly 22, and the connected motor assembly 21 and the speed change assembly 22 are integrated in the cavity of the same first shell 14, and the control assembly 23 is integrated in the cavity of the second shell 15. The control assembly 23 is electrically connected to the motor assembly 21 through a wire 200 to drive the speed change assembly 22 to move by controlling the operation of the motor assembly 21.

[0066] The crossbeam 11 extends along a first direction X, and the two longitudinal beams 12 extend along a second direction Y. The two longitudinal beams 12 are spaced apart along the first direction X and fixedly connected to the crossbeam 11. The second housing 15 extends along the first direction X, and the two longitudinal beams 12 are disposed between the second housing 15 and the crossbeam 11. The crossbeam 11, the two longitudinal beams 12, the two second housings 15, and the first housing 14 collectively form a closed annular structure. Specifically, the first housing 14, the two second housings 15, the two longitudinal beams 12, and the crossbeam 11 collectively form a complete subframe. In this manner, the second housing 15 can serve as another crossbeam of the subframe.

[0067] In the aforementioned subframe assembly 10, the motor assembly 21, the transmission assembly 22, and the control assembly 23 (collectively referred to as the drive assembly) are integrated within the cavities of the first and second housings 14, 15. This allows the first and second housings 14, 15 to both house the drive assembly and serve as another cross member of the subframe. Compared to mounting the drive assembly externally on the subframe, this saves space, allowing the subframe assembly 10 to occupy less space within the vehicle. When the subframe assembly 10 occupies less space within the vehicle, more space is left for the connecting rod mechanism 30 and the elastic damping mechanism 40.

[0068] In the illustrated embodiment, the first direction X is the length direction of the beam 11, that is, the first direction X is the length direction of the second shell 15. The second direction Y is the width direction of the beam 11 and the second shell 15. The first direction X is perpendicular to the second direction Y.

[0069] In some embodiments, the two first shells 14 are fixedly connected to the same side of the second shell 15 along the second direction Y, and the two first shells 14 are spaced apart from the second shell 15 along the first direction X. Each first shell 14 is fixedly connected to a longitudinal beam 12, so that the cross beam 11, the two longitudinal beams 12, the two second shells 15 and the first shell 14 together form a closed ring structure.

[0070] In some embodiments, the two longitudinal beams 12 may also be directly fixedly connected to the second shell 15 .

[0071] When the longitudinal beam 12 is connected to the first shell 14 , the second shell 15 and the two longitudinal beams 12 can better support the two ends of the first shells 14 along the second direction Y, making the closed ring structure more structurally stable.

[0072] In some embodiments, the end of the longitudinal beam 12 facing away from the transverse beam 11 is provided with two ribs 121 spaced apart along the first direction X. The two ribs 121 are symmetrically provided with first connection holes 122, which extend through the ribs 121. The first connection holes 122 extend through the ribs 121. A ridge 14a is provided on the side of the first shell 14 facing away from the second shell 15. The ridge 14a extends along the first direction X and has second connection holes extending through it along the first direction X. A threaded fastener 123 can pass through the second connection hole and the two first connection holes 122, thereby connecting the longitudinal beam 12 to the first shell 14. The structure of the two longitudinal beams 12 and the method of connection to the first shell 14 are identical, and will not be further described in this application.

[0073] The first housing 14 and the longitudinal beam 12 are detachably connected by the threaded fasteners 123 , thereby facilitating assembly and disassembly of the power structure 20 and the longitudinal beam 12 .

[0074] In some embodiments, rubber bushings 13 are provided at both ends of the second housing 15 and the crossbeam 11 along the first direction X, and the sub-frame assembly 10 is connected to the main body via four rubber bushings 13 .

[0075] The subframe assembly 10 is applied to the electromagnetic suspension 100. The speed shift assembly 22 has an output shaft 221b, which is exposed from the first housing 14. The connecting rod mechanism 30 connects the output shaft 221b of the speed shift assembly 22 and the controlled component to transmit the torque of the speed shift assembly 22 to the controlled component, so that the controlled component and the main body move relative to each other under the action of the speed shift assembly 22.

[0076] See also Figure 5 The embodiment of the present application further provides a power structure 20, which includes a first housing 14 and a second housing 15 that are interconnected. The power structure 20 also includes a motor assembly 21, a speed change assembly 22, and a control assembly 23. The motor assembly 21 is coaxially connected to the speed change assembly 22, and the motor assembly 21 and the speed change assembly 22 are disposed together within the cavity of the first housing 14. The control assembly 23 is disposed within the cavity of the second housing 15. The control assembly 23 is connected to and controls the operation of the motor assembly 21, causing the output shaft 221b of the speed change assembly 22 to rotate under the drive of the motor assembly 21.

[0077] Therefore, the motor assembly 21 and the speed change assembly 22 are coaxially connected and integrated in the cavity of a first shell 14, and the control assembly 23 is integrated in the cavity of the second shell 15. The first shell 14 and the second shell 15 are connected to make the two cavities connected; it is convenient for the control assembly 23 to be electrically connected to the motor assembly 21 through the wire 200, so that the control assembly 23 can control the motor assembly 21 to drive the output shaft 221b of the speed change assembly 22 to work, thereby facilitating the control of the movement of the controlled component relative to the main body; it also realizes the integrated setting of the motor assembly 21, the speed change assembly 22, the wire 200 and the control assembly 23 in the connected cavity, improves the stability of the connection between the control assembly 23 and the motor assembly 21, and can also reduce the unnecessary shells of the motor assembly 21, the speed change assembly 22 and the control assembly 23 to save space.

[0078] In some embodiments, a plurality of reinforcing ribs are provided on the outer wall of the first shell 14 to increase the bearing capacity of the first shell 14 .

[0079] The power structure 20 also includes a cooling assembly 25, which includes a first cooling portion 251 and a second cooling portion 252. The first cooling portion 251 is disposed between the side wall of the first housing 14 and the motor assembly 21 and / or the transmission assembly 22 to cool the motor assembly 21 and / or the transmission assembly 22. The second cooling portion 252 is disposed between the side wall of the second housing 15 and the control assembly 23 to cool the control assembly 23.

[0080] The cooling assembly 25 is used to cool the motor assembly 21 and / or the speed change assembly 22 and the control assembly 23 to prevent the motor assembly 21 and / or the speed change assembly 22 or the control assembly 23 from overheating and causing damage to the power structure 20.

[0081] In some embodiments, the power structure 20 includes two motor assemblies 21, two speed change assemblies 22, and two first housings 14. Each motor assembly 21 is coaxially connected to another motor assembly 21, and the interconnected speed change assembly 22 and motor assembly 21 are disposed within the cavity of the same first housing 14. The two first housings 14 are spaced apart along a first direction X and fixedly connected to the second housing 15, such that the cavities of the two first housings 14 communicate with the cavity of the second housing 15.

[0082] Integrating the two motor assemblies 21, two speed change assemblies 22, and one control assembly 23 within a connected cavity facilitates simultaneous control of the two motor assemblies 21 by the control assembly 23. This allows the output shafts 221b of the two speed change assemblies 22 to simultaneously drive the controlled components to move relative to the main body, making the power structure 20 suitable for vehicles and enabling relative movement between the wheels 300 and the vehicle body 400 to adjust the posture of the vehicle body 400. Furthermore, unnecessary housings for the two motor assemblies 21, the two speed change assemblies 22, and the control assembly 23 can be eliminated, saving space.

[0083] See also Figure 6 In some embodiments, a second wire groove 151 is defined within the cavity of the second housing 15, and a first wire groove 141 is defined within the cavity of the first housing 14. The first wire groove 141 communicates with the second wire groove 151. A wire 200 electrically connected to the motor assembly 21 passes through the second wire groove 151 and the first wire groove 141 in sequence before being electrically connected to the control assembly 23. This allows the control assembly 23 to be electrically connected to the motor assembly 21 via the wire 200.

[0084] The first housing 14 and the second housing 15 shield the current in the wire 200 to reduce electromagnetic interference to the surrounding environment caused by the current in the wire 200. The first wire groove 141 and the second wire groove 151 can limit the position of the wire 200 and prevent the wire 200 from being entangled.

[0085] Please combine Figures 6 to 8 In some embodiments, the first cooling portion 251 includes a cooling jacket 2511 disposed within the cavity of the first housing 14. The cooling jacket 2511 abuts against the inner wall of the first housing 14 to divide the cavity into a first cooling chamber 142 and a first accommodating chamber 143. The first accommodating chamber 143 is used to accommodate the motor assembly 21, the speed change assembly 22, and a portion of the wires 200. The first cooling chamber 142 is used to accommodate a cooling medium, so that the cooling medium absorbs heat from the motor assembly 21 and / or the speed change assembly 22 to reduce the temperature of the motor assembly 21 and / or the speed change assembly 22.

[0086] In some embodiments, the cooling sleeve 2511 is fixedly mounted on the motor assembly 21 so that the cooling medium in the first cooling cavity 142 is arranged around the motor assembly 21, so that the cooling medium can mainly absorb the heat generated by the motor assembly 21 to prevent the motor assembly 21 from overheating and damage.

[0087] In other embodiments, the cooling jacket 2511 is fixedly mounted on the motor assembly 21 and the speed change assembly 22 , so that the cooling medium absorbs the heat generated by the motor assembly 21 and the speed change assembly 22 .

[0088] In some embodiments, the length of the first housing 14 is defined as parallel to the first direction X. Two retaining rings 2513 are fixedly mounted at both ends of the cooling jacket 2511 along the length of the first housing 14 (i.e., the first direction X). The surfaces of the retaining rings 2513 facing away from the motor abut against the inner wall of the first housing 14 to separate the first cooling chamber 142.

[0089] The first cooling chamber 142 is enclosed in the cavity by the cooling sleeve 2511 , the side wall of the first shell 14 and the two retaining rings 2513 to prevent the cooling medium from leaking and causing damage to the motor assembly 21 , the speed change assembly 22 and the wire 200 in the first accommodating chamber 143 .

[0090] In some embodiments, the retaining ring 2513 is made of soft rubber and is fixed to the cooling jacket 2511 by secondary injection molding.

[0091] See also Figure 5 In some embodiments, the second cooling portion 252 includes a partition 2521. The partition 2521 is fixedly disposed within the cavity of the second housing 15 and extends along the length direction (first direction X) of the second housing 15. A second accommodating cavity 153 is formed between the upper side of the partition 2521 and the second housing 15. The second accommodating cavity 153 accommodates the control assembly 23 and a portion of the wires 200. A second cooling cavity 152 is formed between the lower side of the partition 2521 and the second housing 15. The second cooling cavity 152 is used to accommodate a cooling medium, which absorbs heat from the control assembly 23 to reduce the temperature of the control assembly 23.

[0092] In some embodiments, the cooling medium is a liquid medium.

[0093] See also Figure 7 In some embodiments, the second cooling cavity 152 is connected to the two first cooling cavities 142, so that the second cooling cavity 152 and the two first cooling cavities 142 can share the cooling medium, which facilitates the centralized introduction or discharge of the cooling medium.

[0094] In some embodiments, each first housing 14 is connected to a pipe 16. The pipe 16 includes a port 162 and a channel 161 that communicate with each other. The channel 161 communicates with the first cooling cavity 142. The cooling medium can enter the channel 161 through the port 162.

[0095] See also Figure 5 Pipe 16 extends through second housing 15, exposing port 162 to facilitate connection to the vehicle's cooling system. The cooling system can draw cooling medium into channel 161 through port 162. The cooling system also receives and cools the heat-absorbing cooling medium discharged from port 162, thereby enabling recycling of the cooling medium.

[0096] In some embodiments, the cooling system connects the interfaces 162 of two pipes 16, and the cooling system introduces a cooling medium into a channel 161 through the interface 162 of one pipe 16. After the cooling medium enters a first cooling cavity 142, a second cooling cavity 152 and another first cooling cavity 142 at one time, it enters the channel 161 of another pipe 16 and flows back to the cooling system through the interface 162 of the pipe 16, thereby realizing the circulation of the cooling medium.

[0097] Please combine Figure 7 and Figure 8In some embodiments, a stop bar 2512 is provided on the side of the cooling jacket 2511 facing the sidewall of the first housing 14, so that the stop bar 2512 abuts the inner wall of the first housing 14. The stop bar 2512 extends along the first direction X, with its ends fixedly connected to two retaining rings 2513. The height direction of the second housing 15 is defined as a third direction Z, which is perpendicular to the first direction X and the second direction Y. Along the third direction Z, the stop bar 2512 is disposed between a pipe 16 and the second cooling cavity 152, enabling the stop bar 2512 to guide the unidirectional flow of the cooling medium.

[0098] When the cooling medium flows in the first cooling cavity 142 , the stop bar 2512 can stop the cooling medium from circulating in the first cooling cavity 142 and guide the cooling medium into the channel 161 or into the second cooling cavity 152 , thereby guiding the cooling medium to flow in one direction.

[0099] By guiding the cooling medium to flow unidirectionally through the stop bar 2512, the cooling medium can be prevented from flowing irregularly, which could cause the absorbed cooling medium to mix with the unabsorbed cooling medium, thus affecting the cooling effect. Therefore, the unidirectional flow of the cooling medium can remove more heat generated by the power structure 20 during operation, thereby improving the liquid cooling effect of the power structure 20.

[0100] In some embodiments, the stop bar 2512 is made of soft rubber and the stop bar 2512 and the two stop rings 2513 are fixed to the cooling sleeve 2511 by secondary injection molding.

[0101] See also Figure 9 In some embodiments, a sidewall of the first housing 14 is provided with a limiting surface 144 located within the cavity. The limiting surface 144 is configured to abut a retaining ring 2513 adjacent to the transmission assembly 22 to position the cooling jacket 2511 within the first housing 14, thereby positioning the motor assembly 21 within the first housing 14.

[0102] In some embodiments, the motor assembly 21 includes a motor 211. The speed change assembly 22 includes a reducer 221. The power shaft 211a of the motor 211 is coaxially connected to the input shaft 221a of the reducer 221. The motor 211 drives the power shaft 211a to rotate, so that the output shaft 221b can transmit power to the controlled device.

[0103] The motor 211 can output power, and the reducer 221 can convert the high speed of the motor 211 into a low speed, while outputting a greater rotational force to better drive the controlled object to move.

[0104] In some embodiments, a mounting shell 2211 is provided outside the reducer 221 , and the mounting shell 2211 is fixed to the first housing 14 by insert die-casting.

[0105] In some embodiments, the first housing 14 is a hollow cylindrical structure. The first housing 14 has two ports, through which the reducer 221 is installed in the mounting shell 2211. A port of the first housing 14 near the output shaft 221b is sealed to confine the reducer 221 in the first housing 14. The output shaft 221b is provided through the first housing 14 and can rotate relative to the mounting shell 2211. The cooling jacket 2511 and the motor 211 are installed in the mounting shell 2211 through the other unsealed port. After the wire 200 is placed in the second wire groove 151, the other port is sealed by an end cap 145. The end cap 145 is connected to the first housing 14 by bolts.

[0106] In some embodiments, the motor 211 is connected to a sensor module 24, which is disposed within the first housing 14. The sensor module 24 is used to sense the position and / or temperature of the motor 211. The sensor module 24 is electrically connected to the control component 23, so that the control component 23 can control the operation of the motor 211 based on the sensing results of the sensor module 24.

[0107] In some embodiments, the sensor module 24 includes a position sensor 242 , which is disposed on the end cap 145 . The position sensor 242 is used to sense the position of the motor 211 and transmit the position information to the control component 23 via the wire 200 .

[0108] After installing the position sensor 242, the wire 200 is placed into the second wire slot 151 and connected to the end cap 145 via a sealing cap 146 to seal the sensor. The sealing cap 146 is made of plastic.

[0109] In some embodiments, the position sensor 242 includes a rotary transformer sensor, a photoelectric encoding sensor, or a magnetic encoding sensor. This application does not impose any restrictions on this, and those skilled in the art can make a selection based on actual conditions.

[0110] In some embodiments, the sensor module 24 includes a temperature sensor 241 (see Figure 10 Temperature sensor 241 is located on the periphery of motor 211 and is sandwiched between motor 211 and cooling jacket 2511. Temperature sensor 241 senses the temperature of motor 211 and transmits the temperature to control assembly 23 via wire 200. When motor 211 overheats, control assembly 23 controls motor 211 to operate at a low speed or stop operating to protect motor 211 and prevent damage.

[0111] In some embodiments, the temperature sensor 241 is a thermal resistor sensor or a thermocouple sensor, which is not limited in this application and can be selected by those skilled in the art according to actual conditions.

[0112] See also Figure 5 In some embodiments, the control assembly 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 the second direction Y to prevent signal interference between the first circuit board 231 and the second circuit board 232. The first circuit board 231 is electrically connected to the sensor module 24 via a wire 200. The second circuit board 232 is electrically connected to the motor 211 via a wire 200. The first circuit board 231 is configured to receive and analyze the sensing results of the sensor module 24 and issue instructions to the second circuit board 232 based on the sensing results. The second circuit board 232 controls the operation of the motor 211 based on the instructions.

[0113] In some embodiments, a mounting plate 154 is disposed in the second housing 15. The first circuit board 231 and the second circuit board 232 are disposed on opposite sides of the mounting plate 154 along the second direction Y to mount and separate the first circuit board 231 and the second circuit board 232.

[0114] The mounting plate 154 is fixed to the first circuit board 231 and the second circuit board 232 by bolts to prevent the first circuit board 231 and the second circuit board 232 from shaking in the second housing 15. The mounting plate 154 separates the first circuit board 231 and the second circuit board 232 to prevent signal interference between the first circuit board 231 and the second circuit board 232.

[0115] In some embodiments, the mounting plate 154 is made of aluminum alloy or engineering plastic.

[0116] See also Figure 10 and Figure 11 In some embodiments, the control component 23 also includes a first connector 2311 and a second connector 2321. The first connector 2311 is electrically connected to the first circuit board 231 through a wire 200, and the second connector 2321 is electrically connected to the second circuit board 232 through a wire 200. The first connector 2311 is used to electrically connect the vehicle's control system, and the second connector 2321 is used to connect the vehicle's power supply.

[0117] Due to the high cost of connectors, the motor assembly 21, the speed change assembly 22 and the control assembly 23 are integrated into the first shell 14 and the second shell 15, and the motor 211 and the control assembly 23, and the sensor module 24 and the control assembly 23 are directly connected through the wire 200, which saves the connector between the motor 211 and the control assembly 23, and the connector between the sensor module 24 and the control assembly 23, which can greatly save costs.

[0118] See also Figure 4 and Figure 5In some embodiments, the second shell 15 includes a groove body 15a and a cover plate 15b, and the cover plate 15b is threadedly connected to the groove body 15a through threaded fasteners to form the second shell 15 with a hollow rectangular parallelepiped structure.

[0119] When installing the control assembly 23, the second circuit board 232 is bonded to the partition 2521. The partition 2521 is then threaded onto the slot body 15a using threaded fasteners. Glue is applied to seal the gap to prevent the cooling medium in the first cooling chamber 142 from leaking into the first accommodating chamber 143. The wire 200 connected to the motor 211 in the second wire duct 151 is connected to the second circuit board 232 and placed into the first wire duct 141. The second connector 2321 is then connected to the second circuit board 232. The first circuit board 231 is then electrically connected to one end of the wire 200.

[0120] The first circuit board 231 is screwed to the mounting plate 154 using threaded fasteners, and the mounting plate 154 is screwed to the second circuit board 232 using threaded fasteners. The wire 200 connected to the sensor module 24 in the second wire groove 151 is connected to the first circuit board 231 and placed in the first wire groove 141. 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 200, thereby electrically connecting the first circuit board 231 and the second circuit board 232.

[0121] The cover plate 15b is threadedly connected to the groove body 15a through threaded fasteners, and glue is applied to seal the gap between the groove body 15a and the cover plate 15b.

[0122] In some embodiments, the threaded fasteners include screws, bolts, or threaded rods, which are not limited in this application and those skilled in the art may make a selection based on actual conditions.

[0123] In addition, those skilled in the art should recognize that the above embodiments are merely intended to illustrate the present application and are not intended to limit the present application. As long as they are within the spirit of the present application, appropriate changes and modifications to the above embodiments are within the scope of disclosure of the present application.

Claims

1. A power structure, characterized in that: The power structure comprises a first shell and a second shell connected to each other; the power structure further comprises: a motor assembly, the motor assembly being disposed in the first housing; a speed change assembly, the speed change assembly being connected to the motor assembly and also disposed in the first housing; a control assembly, the control assembly being connected to the motor assembly and disposed in the second housing; A cooling assembly includes a first cooling part and a second cooling part that are connected to each other, the first cooling part is arranged between the first housing and the motor assembly and / or the speed change assembly, and the second cooling part is arranged between the second housing and the control assembly.

2. The power structure according to claim 1, characterized in that: The first cooling portion includes a cooling jacket, which forms a first cooling cavity and a first accommodating cavity in the first shell. The first accommodating cavity is used to accommodate the motor assembly and / or the speed change assembly.

3. The power structure according to claim 2, characterized in that: Two retaining rings are provided at both ends of the cooling jacket along the length direction of the first shell, and the two retaining rings abut against the inner wall of the first shell to separate the first cooling cavity.

4. The power structure according to any one of claims 1 to 3, characterized in that: The second cooling part includes a partition, which extends along the length direction of the second shell. A second accommodating cavity is formed between the upper side of the partition and the second shell. The second accommodating cavity is used to accommodate the control component. A second cooling cavity is formed between the lower side of the partition and the second shell.

5. The power structure according to claim 2, characterized in that: The first shell is connected to a pipeline, and the pipeline includes a connecting interface and a channel. The channel is connected to the first cooling cavity, so that the cooling medium can enter the channel through the interface.

6. The power structure according to claim 5, characterized in that: A stop bar is provided on the side of the cooling jacket facing the first shell, the stop bar abuts against the inner wall of the first shell, and is constructed between the pipe and the second cooling cavity along the height direction of the first shell to guide the cooling medium to flow in one direction.

7. The power structure according to claim 3, characterized in that: A limiting surface is provided in the first shell, and the limiting surface is used to abut against a retaining ring provided near the speed change assembly to position the cooling jacket.

8. The power structure according to claim 1, characterized in that: A first wire groove is provided in the first shell, and a second wire groove is provided in the second shell. The first wire groove is connected to the second wire groove, and both the first wire groove and the second wire groove are used to accommodate wires.

9. The power structure according to claim 1, characterized in that: The power structure includes two motor assemblies, two speed change assemblies and two first housings, each speed change assembly is connected to one motor assembly, and the interconnected speed change assemblies and motor assemblies are arranged in the same first housing, and the two first housings are connected to the second housing at intervals along the length direction of the second housing.

10. The power structure according to claim 1, characterized in that: The motor assembly includes a motor, the speed change assembly includes a reducer, the power shaft of the motor is coaxially connected to the input shaft of the reducer, and the motor drives the power shaft to rotate so that the output shaft of the reducer can transmit power to the controlled device.

11. The power structure according to claim 1 or 10, characterized in that: The motor assembly is connected to a sensor module, which is disposed in the first housing and electrically connected to the control assembly. The sensor module is used to sense the position of the motor assembly and / or the temperature of the motor assembly.

12. The power structure according to claim 11, characterized in that: The control component includes a first circuit board and a second circuit board electrically connected to each other, the first circuit board and the second circuit board are arranged at an interval, the first circuit board is electrically connected to the sensor module, and the second circuit board is electrically connected to the motor assembly. The first circuit board is used to receive and analyze the sensing results of the sensor module and send instructions to the second circuit board. The second circuit board controls the operation of the motor assembly according to the instructions.

13. The power structure according to claim 12, characterized in that: A mounting plate is provided in the second shell, and the mounting plate extends along the length direction of the second shell. The first circuit board and the second circuit board are respectively provided on both sides of the mounting plate to mount and separate the first circuit board and the second circuit board.

14. A subframe assembly, characterized in that: include: a crossbeam extending along the length direction of the second shell; Two longitudinal beams, both extending along the width direction of the second shell, and along the length direction of the second shell, the two longitudinal beams are respectively provided at opposite ends of the cross beam; The power structure according to any one of claims 1 to 13, wherein along the width direction of the second shell, one end of each longitudinal beam facing away from the cross beam is connected to one of the first shells, or connected to the second shell, so that the cross beam, two of the longitudinal beams, the second shell and two of the first shells together form a closed ring structure.

15. The subframe assembly according to claim 14, wherein: Two ribs are provided at one end of the longitudinal beam away from the transverse beam, and the two ribs are spaced apart along the length direction of the second shell; A ridge is provided at one end of each of the first shells facing away from the second shell, and the ridge is provided between the two ribs. The two ribs and the ridge are configured to be connected by a threaded fastener.

16. An electromagnetic suspension, characterized in that: include: The subframe assembly according to claim 14 or 15, wherein the subframe assembly is configured to connect the main body member; a connecting rod mechanism connecting the output shaft of the speed change assembly and the control component so as to enable the control component to move relative to the main body under the drive of the speed change assembly; The elastic shock absorbing mechanism is configured to connect the main body and the controlled part and elastically deform when the controlled part moves relative to the main body.

17. A vehicle, characterized in that: include: Vehicle body; wheels, rotatably disposed on the vehicle body; The electromagnetic suspension according to claim 16 is configured to connect the vehicle body and the wheels and drive the wheels to move relative to the vehicle body.

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