Motor assembly and vehicle

Abstract

The present disclosure provides a motor assembly and a vehicle, and belongs to the technical field of vehicles. The motor assembly comprises a motor, a motor shell and a fixing support. The motor shell surrounds a stator of the motor, the inner wall of the motor shell is provided with a stopper, and the first end of the stator is in abutment with the stopper. The fixing support is fixedly connected with the motor shell, and the fixing support presses the second end of the stator. By arranging the stopper and the fixing support, the connection strength between the stator and the motor shell in the motor is improved, thereby the natural frequency of the stator is reduced, the possibility of resonance of the stator is reduced, and the generation of noise is reduced on the sound source, and the NVH performance of the vehicle is improved.

Description

Technical Field

[0001] This disclosure relates to the field of vehicle technology, and in particular to an electric motor assembly and a vehicle. Background Technology

[0002] A car's motor assembly includes components such as the motor and its housing. The motor assembly generates noise during operation. Active noise sources in the motor assembly include electromagnetic noise, primarily caused by the vibration of the stator within the motor, which pulsates the surrounding air. Electromagnetic noise can easily cause resonance in the vehicle body, making what would otherwise be low-intensity noise become uncomfortable for occupants, leading to a deterioration in the vehicle's NVH (Noise, Vibration, Harshness) performance.

[0003] In related technologies, to reduce electromagnetic noise, the motor assembly is wrapped with a material that has a sound-insulating effect, thereby achieving a sound insulation effect.

[0004] However, this only reduces noise at the transmission path and does not reduce noise at the source. Therefore, how to effectively reduce the generation of electromagnetic noise at the source is a key problem that needs to be solved. Summary of the Invention

[0005] This disclosure provides an electric motor assembly and a vehicle, which can solve the technical problems existing in the related art. The technical solutions of the electric motor assembly and the vehicle are as follows:

[0006] In a first aspect, this disclosure provides a motor assembly, which includes a motor, a motor housing, and a mounting bracket;

[0007] The motor housing is fitted around the stator of the motor, and the inner wall of the motor housing has a stop, with the first end of the stator abutting against the stop;

[0008] The fixed bracket is fixedly connected to the motor housing, and the fixed bracket presses against the second end of the stator.

[0009] In one possible implementation, the fixed bracket has a first mounting hole, the stator has a second mounting hole that extends through a first end and a second end of the stator, and the stop has a third mounting hole;

[0010] The motor assembly also includes a stator fixing bolt, which passes through the first mounting hole, the second mounting hole and the third mounting hole in sequence, and is screwed into the third mounting hole.

[0011] In one possible implementation, the fixed bracket is fixedly connected to the motor housing by bracket fixing bolts.

[0012] In one possible implementation, the fixing bracket includes a first leg, a second leg, and a stator fixing part;

[0013] Both the first leg and the second leg have a fourth mounting hole for the bracket fixing bolt to pass through;

[0014] The stator fixing part has the first mounting hole.

[0015] In one possible implementation, the stator fixing portion is recessed toward the stop relative to the first leg portion and the second leg portion.

[0016] In one possible implementation, the first leg and the second leg are symmetrical about the stator fixing part.

[0017] In one possible implementation, the motor housing has a fixing structure, which includes a first fixing groove and a second fixing groove;

[0018] The first fixing groove is fixedly connected to the first support leg, and the second fixing groove is fixedly connected to the second support leg.

[0019] In one possible implementation, the first fixing groove has a fifth mounting hole, and the second fixing groove has a sixth mounting hole.

[0020] In one possible implementation, the fifth mounting hole is bolted to the fourth mounting hole, and the sixth mounting hole is bolted to the fourth mounting hole.

[0021] In one possible implementation, the stator sidewall has a protruding mounting portion, the mounting portion having the second mounting hole;

[0022] The inner side wall of the motor housing has a receiving groove that accommodates the mounting part. The first end of the receiving groove has the stop. The first fixing groove and the second fixing groove are located on both sides of the second end of the receiving groove, respectively.

[0023] In one possible implementation, there are multiple stops and multiple fixing brackets;

[0024] The plurality of stops are evenly distributed along the circumference of the motor housing, and the plurality of fixing brackets are evenly distributed along the circumference of the motor housing, with each of the plurality of fixing brackets being opposite to the plurality of stops.

[0025] In one possible implementation, there are multiple mounting portions, which are evenly distributed circumferentially along the outer wall of the stator, and each mounting portion is opposite to a plurality of third mounting holes.

[0026] In one possible implementation, the motor assembly also includes a gearbox, a differential assembly, reduction gears, a motor controller, and an electronic oil pump.

[0027] In a second aspect, this disclosure provides a vehicle that includes an electric motor assembly as described in any of the first aspects.

[0028] The technical solution provided in this disclosure includes at least the following beneficial effects:

[0029] This disclosure provides a motor assembly including a motor, a motor housing, and a mounting bracket. The motor housing has an internal stop, and a first end of the stator abuts against the stop. The mounting bracket is fixedly connected to the motor housing and presses against a second end of the stator. By providing the stop and the mounting bracket, the connection strength between the stator and the motor housing is improved, thereby increasing the structural rigidity of the stator. This, in turn, increases the natural frequency of the stator, reduces the possibility of stator resonance, and thus reduces noise generation at the sound source.

[0030] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0031] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. In the drawings:

[0032] Figure 1 This is a schematic diagram of the structure of a motor assembly shown in an embodiment of this disclosure;

[0033] Figure 2 This is a schematic diagram of a fixed bracket according to an embodiment of the present disclosure;

[0034] Figure 3 This is a schematic diagram of the structure of a motor housing shown in an embodiment of this disclosure;

[0035] Figure 4 This is a schematic diagram of the structure of an electric motor shown in an embodiment of this disclosure.

[0036] Legend:

[0037] 1. Electric motor;

[0038] 11. Stator;

[0039] 110. Second mounting hole; 111. Mounting part;

[0040] 12. Rotor;

[0041] 13. Rotor shaft;

[0042] 2. Motor housing;

[0043] 21. Stop talking;

[0044] 22. Fixed structure;

[0045] 221, First fixing groove; 221a, Fifth mounting hole; 222, Second fixing groove; 222a, Sixth mounting hole;

[0046] 23. Receiving tank;

[0047] 3. Fixed bracket;

[0048] 30. Fourth mounting hole;

[0049] 31. The first leg;

[0050] 311. First fixed structure; 312. Second fixed structure; 313. Third fixed structure;

[0051] 32. The second leg;

[0052] 321. Fourth fixed structure; 322. Fifth fixed structure; 323. Sixth fixed structure;

[0053] 33. Stator fixing part;

[0054] 330. First mounting hole;

[0055] 4. Stator fixing bolts;

[0056] 5. Bracket fixing bolts.

[0057] The accompanying drawings have illustrated specific embodiments of this disclosure, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this disclosure to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings.

[0059] The terminology used in the embodiments of this disclosure is for illustrative purposes only and is not intended to limit the disclosure. Unless otherwise defined, the technical or scientific terms used herein should be understood in their ordinary sense by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” “third,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “a” or “one,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising,” “including,” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected,” “linked,” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0060] With the rapid development of new energy vehicles, the high efficiency and high power density of permanent magnet synchronous motors have led to their widespread application in electric vehicles. The motor assembly of a car consists of components such as the motor, motor housing, reducer, and controller. The motor assembly generates noise (active noise) during operation. The active noise sources of the motor assembly include mechanical noise and electromagnetic noise. Mechanical noise is caused by reducer excitation, bearing excitation, and rotor eccentricity excitation. Electromagnetic noise is mainly caused by the vibration of the stator in the motor, which causes pulsation in the surrounding air. The stator vibration is due to rotating radial electromagnetic force waves of various frequencies and frequencies existing in the motor's air gap. Each radial force wave acts on the stator core and rotor core, causing radial deformation of the stator core, frame, and rotor that changes periodically over time, thus causing stator vibration.

[0061] The stator electromagnetic noise in an electric motor is mainly affected by two factors: the electromagnetic excitation force and the structural response and sound radiation caused by the corresponding excitation force. The main magnetic flux in the motor enters the air gap roughly radially, generating radial forces on the stator and rotor, thus causing electromagnetic vibration and noise. The electromagnetic force generated by the air gap magnetic field is a rotating force wave with radial and tangential components. The radial component causes radial deformation and periodic vibration of the stator and rotor, and is the main source of electromagnetic noise. The tangential component is the torque corresponding to the electromagnetic torque, which can cause local vibration and deformation of the stator, and is a secondary source of electromagnetic noise. In many cases, such as motor misalignment, large tangential vibrations can easily cause resonance in components connected to the motor, generating radiated noise.

[0062] Electromagnetic noise in motors is related not only to the electromagnetic force waves generated by the air gap magnetic field but also to the inherent modes of the motor's structure. When the frequency of the radial force wave is equal to or close to the natural frequency of the stator, resonance occurs. Even if the amplitude of the radial force wave is small, it can cause significant stator vibration, resulting in substantial electromagnetic noise. This electromagnetic noise can easily cause resonance in the vehicle body, making previously low-intensity noise uncomfortable for passengers. The resulting "humming" vibration can even be irritating. This "humming" sound is electromagnetic noise, or rather, electromagnetic noise amplified by the vehicle body resonance. Therefore, effectively reducing or minimizing electromagnetic noise is crucial when designing motors.

[0063] In related technologies, sound-insulating materials are used to wrap the motor assembly to reduce electromagnetic noise, thereby achieving a sound insulation effect. However, this only reduces noise at the transmission path and does not reduce noise at the source. Therefore, how to effectively reduce the generation of electromagnetic noise at the source is a key problem that needs to be solved.

[0064] This disclosure provides a motor assembly, such as... Figure 1 As shown, the motor assembly includes a motor 1, a motor housing 2, and a mounting bracket 3. The motor housing 2 surrounds the stator 11 of the motor 1, as shown... Figure 3 As shown, the inner wall of the motor housing 2 has a stop 21, and the first end of the stator 11 abuts against the stop 21. The fixing bracket 3 is fixedly connected to the motor housing 2, and the fixing bracket 3 presses against the second end of the stator 11.

[0065] The motor 1 can convert electromagnetic energy into rotational kinetic energy. It includes a stator 11, a rotor 12 and a rotor shaft 13. The rotor shaft 13 is coaxial with the motor 1. The rotor 12 is a rotating body and rotates around the rotor shaft 13. The stator 11 is a component fixed to the motor housing 2. The stator 11 has a stator core, a coil and an insulating component between the stator core and the coil.

[0066] The motor housing 2 is a one-piece die-cast structure, and the material can be aluminum alloy. The motor housing 2 can be an electric drive housing, and is an integrated housing of the motor housing, reducer housing, and microcontroller housing.

[0067] The stop 21 can be regarded as a stepped structure inside the motor housing 2.

[0068] The fixed bracket 3 can be a one-piece die-cast structure, and the material can be aluminum alloy.

[0069] The technical solution provided in this embodiment improves the connection strength between the stator 11 and the motor housing 2 in the motor 1 by setting the stop 21 and the fixing bracket 3, thereby improving the structural rigidity of the stator 11 and thus increasing the natural frequency of the stator 11. This makes the electromagnetic force frequency and the natural frequency of the stator 11 significantly different, reducing the possibility of resonance in the stator 11, thereby reducing noise generation at the sound source and improving the NVH performance of the vehicle.

[0070] In some examples, such as Figure 2 As shown, the fixing bracket 3 has a first mounting hole 330, such as Figure 4 As shown, the stator 11 has a second mounting hole 110, which penetrates through the first end and the second end of the stator 11, as... Figure 3 As shown, the stop 21 has a third mounting hole 21a. Furthermore, the first mounting hole 330, the second mounting hole 110, and the third mounting hole 21a are aligned.

[0071] To stably connect the motor housing 2 to the stator 11, such as Figure 1 As shown, the motor assembly also includes a stator fixing bolt 4, which passes through the first mounting hole 330, the second mounting hole 110 and the third mounting hole 21a in sequence, and is screwed into the third mounting hole 21a.

[0072] In some examples, such as Figure 1 As shown, the fixed bracket 3 is fixedly connected to the motor housing 2 by the bracket fixing bolt 5, and each fixed bracket 3 is fixedly connected to the motor housing 2 by two fixing bolts 5, which increases the connection strength between the fixed bracket 3 and the motor housing 2.

[0073] It is understandable that if the fixed bracket 3 is connected to the motor housing 2 by only one fixing bolt 5, the fixed bracket 3 may rotate or even fall off the motor housing 2 when the fixing bolt 5 loosens.

[0074] In some examples, such as Figure 2 As shown, the fixing bracket 3 includes a first leg 31, a second leg 32, and a stator fixing part 33. Both the first leg 31 and the second leg 32 have a fourth mounting hole 30 for the bracket fixing bolt 5 to pass through. The stator fixing part 33 has a first mounting hole 330. Thus, the fixing bracket 3 can be connected to both the stator 11 and the motor housing 2 simultaneously.

[0075] Since the stator 11 is located inside the motor housing 2, and the end face of the stator 11 is lower than the end face of the motor housing 2, the fixing bracket 3 is bent to connect the stator 11 to the motor housing 2 via the fixing bracket 3. Figure 1 and Figure 2As shown, the stator fixing part 33 is recessed towards the stop 2 relative to the first leg 31 and the second leg 32, and the stator fixing part 33 extends in the opposite direction to the first leg 31 and the second leg 32. In this way, the stator fixing part 33 can be connected to the end face of the second end of the stator 11, and the first leg 31 and the second leg 32 can be connected to the motor housing 2.

[0076] For example, such as Figure 2 As shown, the first leg 31 includes a first fixing structure 311, a second fixing structure 312, and a third fixing structure 313 connected in sequence. The first fixing structure 311 is connected to the stator fixing part 33, and the third fixing structure 313 has a fourth mounting hole 30. The first fixing structure 311 and the second fixing structure 312 are arranged in a bent manner, and the second fixing structure 312 and the third fixing structure 313 are also arranged in a bent manner. The first fixing structure 311 and the third fixing structure 313 extend in opposite directions relative to the second fixing structure 312.

[0077] The second leg 32 includes a fourth fixing structure 321, a fifth fixing structure 322, and a sixth fixing structure 323 connected in sequence. The fourth fixing structure 321 is connected to the stator fixing part 33, and the sixth fixing structure 323 has a fourth mounting hole 30. The fourth fixing structure 321 and the fifth fixing structure 322 are arranged in a bent manner, and the fifth fixing structure 322 and the sixth fixing structure 323 are also arranged in a bent manner. The fourth fixing structure 321 and the sixth fixing structure 323 extend in opposite directions relative to the fifth fixing structure 322.

[0078] In some examples, such as Figure 2 As shown, the first leg 31 and the second leg 32 are symmetrical about the stator fixing part 33, which can make the overall force of the fixing bracket 3 balanced. When the fixing bracket 3 is subjected to a large force, it is not easy to cause local twisting or breakage.

[0079] In some examples, such as Figure 3 As shown, the motor housing 2 has a fixing structure 22, which includes a first fixing groove 221 and a second fixing groove 222. The first fixing groove 221 is fixedly connected to the first support leg 31, and the second fixing groove 222 is fixedly connected to the second support leg 32. The first fixing groove 221 and the second fixing groove 222 can be regarded as countersunk holes, which can ensure the flatness of the mounting surfaces of the first fixing groove 221 and the second fixing groove 222.

[0080] In addition, by providing the first fixing groove 221 and the second fixing groove 222 on the motor housing 2, the space occupied by the motor assembly can be reduced. If the fixing structure 22 (such as bolt holes) is directly provided on the motor housing 2, the bracket fixing bolt 5 will extend to the outside of the motor housing 2, causing the bracket fixing bolt 5 to rub or collide with the parts outside the motor housing 2, which will lead to the bracket fixing bolt 5 loosening.

[0081] For example, the first fixing groove 221 and the second fixing groove 222 are located on the motor housing 2 near the second end of the stator 11. The bottom surface shapes of the first fixing groove 221 and the second fixing groove 222 are respectively consistent with the shapes of the ends of the first support leg 31 and the second support leg 32, that is, the inner walls of the first fixing groove 221 and the second fixing groove 222 can fit against the outer walls of the ends of the first support leg 31 and the second support leg 32, respectively. This allows the first fixing groove 221 to be fixedly connected to the first support leg 31, and the second fixing groove 222 to be fixedly connected to the second support leg 32.

[0082] like Figure 2 As shown, the first fixing groove 221 has a fifth mounting hole 221a, the second fixing groove 222 has a sixth mounting hole 222a, the fifth mounting hole 221a is connected to the fourth mounting hole 30 by a bracket fixing bolt 5, and the sixth mounting hole 222a is connected to the fourth mounting hole 30 by a bracket fixing bolt 5.

[0083] For example, the first fixing groove 221 and the second fixing groove 222 are symmetrical about the first mounting hole 330, and the fifth mounting hole 221a and the sixth mounting hole 222a are symmetrical about the first mounting hole 330, so that the fixing bracket 3 can be assembled with the fixing structure 22.

[0084] In some examples, such as Figure 4 As shown, the side wall of the stator 11 has a protruding mounting portion 111, and the mounting portion 111 has a second mounting hole 110. The inner wall of the motor housing 2 has a receiving groove 23, which receives the mounting portion 111. The first end of the receiving groove 23 has a stop 21, and the first fixing groove 221 and the second fixing groove 222 are located on both sides of the second end of the receiving groove 23, respectively.

[0085] The specific shape of the mounting part 111 is not limited in the embodiments disclosed herein. In some instances, such as Figure 4 As shown, the length of the mounting part 111 can be equal to the length of the stator 11, so that the second mounting hole 110 can pass through the entire mounting part 111.

[0086] Of course, in other instances, the mounting portion 111 can also be viewed as a flange connected to the first and second ends of the stator 11, respectively, and the length of the mounting portion 111 is less than the length of the stator 111. This can reduce the overall weight of the stator and lower the cost.

[0087] In some examples, such as Figure 1 and Figure 3 As shown, to ensure a tighter connection between the stator 11 and the motor housing 2, multiple stops 21 and fixing brackets 3 are provided. To ensure a more uniform force distribution on the stator 11, multiple stops 21 are evenly distributed along the circumference of the motor housing 2, and multiple fixing brackets 3 are evenly distributed along the circumference of the motor housing 2, with each fixing bracket 3 facing a different stop 21. Furthermore, multiple first mounting holes 330 are each facing a different third mounting hole 21a.

[0088] In some examples, such as Figure 1 and Figure 2 As shown, multiple fixing structures 22 are provided, and the multiple fixing structures 22 are evenly distributed along the circumference of the motor housing 2. The multiple fixing structures 22 are respectively opposite to multiple fixing brackets 3. Furthermore, multiple fifth mounting holes 221a are respectively opposite to multiple fourth mounting holes 30 of the first leg 31, and multiple sixth mounting holes 222a are respectively opposite to multiple fourth mounting holes 30 of the second leg 32.

[0089] Correspondingly, there are multiple mounting parts 111. The number of mounting parts 111 can be the same as that of the stop 21, and multiple mounting parts 111 are respectively opposite to multiple stop 21. Furthermore, multiple second mounting holes 110 are respectively opposite to multiple third mounting holes 21a.

[0090] For example, such as Figures 1-4 As shown, the number of fixed brackets 3 and the number of mounting parts 111 can be 4.

[0091] The assembly process of the motor assembly provided in the embodiments of this disclosure will be described exemplarily below with reference to the accompanying drawings:

[0092] The first step is to assemble the stator 11, rotor 12 and rotor shaft 13 together according to the specifications to form the motor 1.

[0093] The second step is to clean the inside of the motor housing 2. After cleaning the inside of the motor housing 2, the assembly process can begin.

[0094] The third step is to place the motor 1 into the receiving groove 23 of the motor housing 2, and align the second mounting hole 110 on the stator 11 with the third mounting hole 21a of the stop 21.

[0095] Step four, as Figure 1As shown, the fixing bracket 3 is placed at the end of the motor housing 2 away from the stop 21, and the first leg 31 is placed in the first fixing groove 211, and the second leg 32 is placed in the second fixing groove 222. Then, one bracket fixing bolt 5 is passed through the fourth mounting hole 30 and the fifth mounting hole 221a in sequence, and another bracket fixing bolt 5 is passed through the fourth mounting hole 30 and the sixth mounting hole 222a in sequence, thereby fixing the fixing bracket 3 to the motor housing 2. At this time, the fixing bracket 3 and the stop 21 form a preliminary positioning of the stator 11.

[0096] Fifth step, as Figure 1 As shown, the stator fixing bolt 4 is passed sequentially through the first mounting hole 330, the second mounting hole 110, and the third mounting hole 21a, and tightened in the third mounting hole 21a, thereby fixing the stator 11, the motor housing 2, and the fixing bracket 3 together. At this time, the fixing bracket 3 can secure the stator 11 to the motor housing 2.

[0097] This disclosure also provides a vehicle that includes the above-described motor assembly.

[0098] The vehicle provided in this embodiment of the present disclosure, by installing the above-mentioned motor assembly, has a lower probability of resonance in the motor 1 of the motor assembly, thereby reducing the vibration of the vehicle body, reducing noise, and improving the driver's comfort.

[0099] The above description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A motor assembly, characterized in that, The motor assembly includes a motor, a motor housing, and a mounting bracket; The motor housing is fitted around the stator of the motor, and the inner wall of the motor housing has a stop, with the first end of the stator abutting against the stop; A fixing structure is provided on the end face of the motor housing near the second end of the stator, the fixing structure including a first fixing groove and a second fixing groove; The fixed bracket includes a first leg, a second leg, and a stator fixing part. The first leg is fixedly connected to the first fixing groove, and the second leg is fixedly connected to the second fixing groove. The stator fixing part sinks towards the stop relative to the first leg and the second leg, and the stator fixing part is connected to the second end of the stator and presses the second end of the stator. The first leg includes a first fixing structure, a second fixing structure, and a third fixing structure connected in sequence. The first fixing structure is connected to the stator fixing part, and the third fixing structure is connected to the first fixing groove. The first fixing structure and the second fixing structure are arranged in a bent manner, and the second fixing structure and the third fixing structure are arranged in a bent manner. The first fixing structure and the third fixing structure extend in opposite directions.

2. The motor assembly according to claim 1, characterized in that, The fixed bracket has a first mounting hole, the stator has a second mounting hole, the second mounting hole passes through the first end and the second end of the stator, and the stop has a third mounting hole; The motor assembly also includes a stator fixing bolt, which passes through the first mounting hole, the second mounting hole and the third mounting hole in sequence, and is screwed into the third mounting hole.

3. The motor assembly according to claim 2, characterized in that, The fixed bracket is fixedly connected to the motor housing by bracket fixing bolts.

4. The motor assembly according to claim 3, characterized in that, Both the first leg and the second leg have a fourth mounting hole for the bracket fixing bolt to pass through; The stator fixing part has the first mounting hole.

5. The motor assembly according to claim 4, characterized in that, The first leg and the second leg are symmetrical about the stator fixing part.

6. The motor assembly according to claim 4, characterized in that, The stator has a protruding mounting portion on its sidewall, and the mounting portion has the second mounting hole; The inner side wall of the motor housing has a receiving groove that accommodates the mounting part. The first end of the receiving groove has the stop. The first fixing groove and the second fixing groove are located on both sides of the second end of the receiving groove, respectively.

7. The motor assembly according to any one of claims 1-6, characterized in that, There are multiple stops and multiple fixing brackets; The plurality of stops are evenly distributed along the circumference of the motor housing, and the plurality of fixing brackets are evenly distributed along the circumference of the motor housing, with each of the plurality of fixing brackets being opposite to the plurality of stops.

8. A vehicle, characterized in that, The vehicle includes the motor assembly as described in any one of claims 1-7.

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