Motor and vehicle

Abstract

The utility model discloses a motor and a vehicle, the motor comprises a first shell, an inner rotor, an inner stator, an outer stator, an outer rotor, a rotor shaft and a stator support frame, the rotor shaft, the inner rotor, the inner stator, the outer stator and the outer rotor are coaxial and are sequentially arranged outwards along the radial direction of the rotor shaft, the inner rotor is coaxially connected with the rotor shaft, the first shell comprises an end plate, and the stator support frame is arranged on the end plate. The stator supporting frame is located on the sides, away from the end plate, of the inner stator and the outer stator, the inner stator and the outer stator are connected between the end plate and the stator supporting frame through fasteners, and the rotor shaft is rotationally installed on the end plate and the stator supporting frame. The motor provided by the utility model has the advantage of high reliability of supporting the inner stator and the outer stator.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and particularly relates to an electric motor and a vehicle. Background Art

[0002] Range-extended or hybrid-driven vehicles need to adopt a dual-motor system. To reduce the axial dimension of the dual-motor system, the stators and rotors of the two motors are usually nested radially, that is, the stator and rotor of one motor are nested on the stator and rotor of the other motor, and both stators are fixed to the motor housing by bolts. In the related art, in order to facilitate the outer rotor to protrude out of the motor housing, usually only an end plate is provided at one end of the motor housing, and the two stators are connected to the end plate by bolts. One end of the stator away from the end plate is not restricted. At this time, there are defects that the connection strength requirements for the bolts and the end plate are high, and the support reliability of the housing for the two stators is poor. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems in the related art to a certain extent.

[0004] To this end, an embodiment of the utility model provides an electric motor, which has the advantage of high support reliability for the inner stator and the outer stator.

[0005] An embodiment of the utility model also provides a vehicle.

[0006] The electric motor according to the embodiment of the utility model includes a first housing, an inner rotor, an inner stator, an outer stator, an outer rotor, a rotor shaft and a stator support frame. The rotor shaft, the inner rotor, the inner stator, the outer stator and the outer rotor are coaxial and are arranged in sequence radially outward along the rotor shaft. The inner rotor is coaxially connected to the rotor shaft.

[0007] The first housing includes an end plate. The stator support frame is located on the side of the inner stator and the outer stator away from the end plate. The inner stator and the outer stator are both connected between the end plate and the stator support frame by fasteners. The rotor shaft is rotatably installed on the end plate and the stator support frame.

[0008] According to the electric motor of the embodiment of the utility model, the outer rotor and the outer stator form an outer motor, and the rotor shaft, the inner rotor and the inner stator form an inner motor. The outer motor and the inner motor meet the dual-motor use requirements of range-extended and hybrid-driven vehicles. Among them, while the first ends of the inner stator and the outer stator are connected to the end plate, the second ends of the inner stator and the outer stator are also connected to the stator support frame, and the stator support frame is pivotally connected to the rotor shaft. At this time, the first housing realizes the support for the second ends of the inner stator and the outer stator through the rotor shaft and the stator support frame, thereby effectively avoiding the offset of the inner stator and the outer stator, and the electric motor has high support reliability for the inner stator and the outer stator.

[0009] In some embodiments, the motor also includes a rotor hub, which is located in the first shell and coaxially connected to the outer rotor. At least a portion of the rotor hub is located on a side of the stator support frame away from the end plate and is used to be driven and connected to the crankshaft of the engine or the flange of the range extender.

[0010] In some embodiments, the motor further comprises a first bearing, a first stepped hole is provided on the end plate, at least a portion of the rotor shaft passes through the first stepped hole and is exposed outside the first housing, and the first bearing is fitted between an inner wall surface of the first stepped hole and an outer peripheral surface of the rotor shaft;

[0011] The motor further comprises a second bearing. A second stepped hole is provided on the stator support frame. The second bearing is fitted between the inner wall surface of the second stepped hole and the outer peripheral surface of the rotor shaft.

[0012] In some embodiments, the motor also includes a third bearing, a third stepped hole is provided on the rotor hub, the stator support frame includes a support portion located in the third stepped hole, and the third bearing is fitted between the inner wall surface of the third stepped hole and the outer peripheral surface of the support portion.

[0013] In some embodiments, the outer stator is provided with a plurality of first through holes extending along the axial direction of the outer stator, and the inner stator is provided with a plurality of second through holes extending along the axial direction of the inner stator, any one of the first through holes and any one of the second through holes are arranged at intervals along the circumferential direction of the inner rotor, the outer stator is connected to the end plate and the stator support frame by a first fastener passing through the first through hole, and the inner stator is connected to the end plate and the stator support frame by a second fastener passing through the second through hole.

[0014] In some embodiments, the outer stator includes an outer stator yoke, and the inner stator includes an inner stator yoke. The inner circumferential surface of the outer stator yoke is provided with a plurality of first connection parts extending toward the inner stator yoke, and the outer circumferential surface of the inner stator yoke is provided with a plurality of second connection parts extending toward the outer stator yoke. The plurality of first connection parts and the plurality of second connection parts are alternately arranged along the circumferential direction of the inner rotor, and each of the first connection parts is provided with a first through hole, and each of the second connection parts is provided with a second through hole.

[0015] In some embodiments, the inner circumferential surface of the outer stator yoke is provided with a first groove for at least partial cooperation with the second connecting portion, and the outer circumferential surface of the inner stator yoke is provided with a second groove for at least partial cooperation with the first connecting portion.

[0016] In some embodiments, a surface of the end plate facing the inner stator is provided with a plurality of first threaded holes and a plurality of second threaded holes;

[0017] A plurality of third through holes corresponding to the first through hole and a plurality of fourth through holes corresponding to the second through hole are provided on the stator support frame;

[0018] Both the first fastener and the second fastener are threaded members. The first fastener passes through the third through hole and the first through hole and is in threaded cooperation with the first threaded hole. The second fastener passes through the fourth through hole and the second through hole and is in threaded cooperation with the second threaded hole.

[0019] In some embodiments, the motor further includes:

[0020] A second housing, which is integrally formed with the first housing, and the inner cavity of the second housing is communicated with the inner cavity of the first housing through the first stepped hole;

[0021] An input shaft, which is rotatably installed in the second housing and is coaxially connected to the rotor shaft;

[0022] An output shaft and a gear transmission mechanism. The output shaft is rotatably installed on the second housing, and the output shaft is drivingly connected to the input shaft through the gear transmission mechanism.

[0023] In some embodiments, the rotor shaft, the inner rotor and the inner stator form a three-phase asynchronous motor;

[0024] And / or, the outer rotor and the outer stator form a permanent magnet synchronous motor.

[0025] A vehicle according to an embodiment of the present invention includes the motor as described in any one of the above embodiments.

[0026] The technical advantages of the vehicle according to an embodiment of the present invention are the same as those of the motor in the above embodiments. Description of the Drawings

[0027] Figure 1 is a cross-sectional view of the motor according to an embodiment of the present invention.

[0028] Figure 2 is another cross-sectional view of the motor according to an embodiment of the present invention.

[0029] Reference Numerals:

[0030] 1. First housing; 11. End plate; 111. Threaded hole; 2. Inner rotor; 3. Inner stator; 31. Inner stator yoke; 311. First connection part; 312. First groove; 313. First through hole; 4. Outer stator; 41. Outer stator yoke; 411. Second connection part; 412. Second groove; 413. Second through hole; 5. Outer rotor; 6. Rotor shaft; 7. Stator support frame; 71. Support part; 8. Rotor hub; 9. First bearing; 10. Second bearing; 110. Third bearing; 120. Second housing; 130. Input shaft; 140. Gear transmission mechanism; 150. Engine; 160. Rotor balance plate. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0032] Combine the following Figure 1 and Figure 2 A motor according to an embodiment of the present invention is described.

[0033] The motor of the embodiment of the utility model comprises a first housing 1, an inner rotor 2, an inner stator 3, an outer stator 4, an outer rotor 5, a rotor shaft 6 and a stator support frame 7. The rotor shaft 6, the inner rotor 2, the inner stator 3, the outer stator 4 and the outer rotor 5 are coaxial and arranged in sequence radially outward of the rotor shaft 6, and the inner rotor 2 is coaxially connected to the rotor shaft 6. The first housing 1 comprises an end plate 11, and the stator support frame 7 is located on the side of the inner stator 3 and the outer stator 4 away from the end plate 11. The inner stator 3 and the outer stator 4 are both connected between the end plate 11 and the stator support frame 7 by fasteners, and the rotor shaft 6 is rotatably mounted on the end plate 11 and the stator support frame 7.

[0034] According to the motor of the embodiment of the utility model, the outer rotor 5 and the outer stator 4 constitute the outer motor, the rotor shaft 6, the inner rotor 2 and the inner stator 3 constitute the inner motor, and the outer motor and the inner motor meet the dual motor use requirements of the extended-range and hybrid drive vehicles. Among them, while the first ends of the inner stator 3 and the outer stator 4 are connected to the end plate 11, the second ends of the inner stator 3 and the outer stator 4 are also connected to the stator support frame 7, and the stator support frame 7 is pivotally connected to the rotor shaft 6. At this time, the first housing 1 supports the second ends of the inner stator 3 and the outer stator 4 through the rotor shaft 6 and the stator support frame 7, thereby effectively avoiding the offset of the inner stator 3 and the outer stator 4, and the motor has high support reliability for the inner stator 3 and the outer stator 4.

[0035] It should be noted that the inner stator 3 and the outer stator 4 are spaced apart radially along the inner rotor 2, thereby avoiding electromagnetic interference between the two and ensuring the working reliability of the inner motor and the outer motor. The inner rotor 2 is sleeved on the rotor shaft 6 in a key-connected manner. Rotor balance plates 160 are coaxially fixed on both axial sides of the outer rotor 5 to ensure the dynamic performance and stability of the outer rotor 5. The rotor laminations forming the inner rotor 2, the stator laminations forming the inner stator yoke 31, the stator laminations forming the outer stator yoke 41, and the rotor laminations forming the outer rotor 5 are all made by the same set of lamination dies, and at this time, the waste rate of the raw material is low and the utilization rate of the raw material is high.

[0036] In some embodiments, as Figure 1 shown, the motor further includes a rotor hub 8. The rotor hub 8 is located in the first housing 1 and is coaxially connected to the outer rotor 5. At least part of the rotor hub 8 is located on the side of the stator support frame 7 away from the end plate 11 and is used for driving connection with the crankshaft of the engine 150 or the flange of the range extender.

[0037] At this time, the first housing 1 can be provided with an opening at one end away from the end plate 11. After the rotor hub 8 is connected to the outer rotor 5, it can shield the outer rotor 5, the outer stator 4, the inner stator 3, and the inner rotor 2, and at the same time, the part of the rotor hub 8 located on the side of the stator support frame 7 away from the end plate 11 is drivingly connected to the crankshaft of the engine 150 or the flange of the range extender to realize the start and stop of the engine 150 or the range extender, without the need for a support bearing, thereby effectively reducing the manufacturing cost of the motor.

[0038] Specifically, mounting holes for connecting with the housing of the engine 150 or the range extender are provided on the end face of the first housing 1 away from the end plate 11 to ensure the fixed connection between the housing of the engine 150 or the range extender and the first housing 1. The rotor hub 8 is provided with an assembly hole with an opening facing the end plate 11, and the outer rotor 5 is press-fitted into the assembly hole.

[0039] In some embodiments, as Figure 1 shown, the motor further includes a first bearing 9. A first stepped hole is provided on the end plate 11. At least part of the rotor shaft 6 passes through the first stepped hole and is exposed outside the first housing 1. The first bearing 9 is fitted between the inner wall surface of the first stepped hole and the outer peripheral surface of the rotor shaft 6. The motor further includes a second bearing 10. A second stepped hole is provided on the stator support frame 7. The second bearing 10 is fitted between the inner wall surface of the second stepped hole and the outer peripheral surface of the rotor shaft 6. The motor further includes a third bearing 110. A third stepped hole is provided on the rotor hub 8. The stator support frame 7 includes a support portion 71 located in the third stepped hole. The third bearing 110 is fitted between the inner wall surface of the third stepped hole and the outer peripheral surface of the support portion 71.

[0040] That is, the rotor shaft 6 is rotatably mounted on the end plate 11 and the stator support frame 7 through the first bearing 9 and the second bearing 10 respectively, thereby ensuring the rotational accuracy of the inner rotor 2 and the rotor shaft 6 relative to the inner stator 3 and the first housing 1. On this basis, the design that the rotor hub 8 is rotatably mounted on the stator support frame 7 through the third bearing 110 ensures the coaxiality of each of the outer rotor 5 and the inner rotor 2 with each of the inner stator 3 and the outer stator 4. On the basis that the rotor hub 8 and the first housing 1 are respectively connected to the crankshaft and the housing of the engine 150, the stator support frame 7 and the end plate 11 better achieve reliable support for both ends of the inner stator 3 and the outer stator 4, and the operation reliability of the motor is higher.

[0041] In some embodiments, as Figure 1 and Figure 2 shown, the outer stator 4 is provided with a plurality of first through holes 313 extending along the axial direction of the outer stator 4, and the inner stator 3 is provided with a plurality of second through holes 413 extending along the axial direction of the inner stator 3. Any one of the first through holes 313 and any one of the second through holes 413 are arranged at intervals along the circumferential direction of the inner rotor 2. The outer stator 4 is connected to the end plate 11 and the stator support frame 7 through first fasteners passing through the first through holes 313, and the inner stator 3 is connected to the end plate 11 and the stator support frame 7 through second fasteners passing through the second through holes 413.

[0042] At this time, the portion of the outer stator 4 provided with the first through holes 313 and the portion of the inner stator 3 provided with the second through holes 413 are opposite to each other along the circumferential direction of the rotor shaft 6, rather than being arranged radially along the rotor shaft 6, thereby effectively reducing the radial dimension occupied by the inner stator 3 and the outer stator 4. The inner stator 3 and the outer stator 4 occupy less internal space of the first housing 1, and the volume and weight of the motor are lighter.

[0043] Specifically, the number of the first through holes 313 and the second through holes 413 is equal, and the plurality of first through holes 313 and the plurality of second through holes 413 are alternately arranged at intervals along the circumferential direction of the inner rotor 2.

[0044] In some embodiments, as Figure 2 shown, the outer stator 4 includes an outer stator yoke 41, the inner stator 3 includes an inner stator yoke 31. The inner circumferential surface of the outer stator yoke 41 is provided with a plurality of first connecting portions 311 extending towards the inner stator yoke 31, and the outer circumferential surface of the inner stator yoke 31 is provided with a plurality of second connecting portions 411 extending towards the outer stator yoke 41. The plurality of first connecting portions 311 and the plurality of second connecting portions 411 are alternately arranged at intervals along the circumferential direction of the inner rotor 2. Each first connecting portion 311 is provided with a first through hole 313, and each second connecting portion 411 is provided with a second through hole 413.

[0045] Thus, while ensuring that the first through-hole 313 and the second through-hole 413 are arranged at intervals along the circumferential direction of the inner rotor 2, it is not necessary to thicken the entire inner stator yoke 31 and the outer stator yoke 41, further reducing the space occupied by the inner stator 3 and the outer stator 4, and further reducing the total weight of the motor.

[0046] In some embodiments, as Figure 2 shown, at least a part of the second connecting portion 411 is fitted into the first groove 312 provided on the inner circumferential surface of the outer stator yoke 41, and at least a part of the first connecting portion 311 is fitted into the second groove 412 provided on the outer circumferential surface of the inner stator yoke 31.

[0047] Thus, the distance between the inner circumferential surface of the inner stator yoke 31 and the outer circumferential surface of the outer stator yoke 41 is further reduced, and thus the radial dimension of the motor is lower, the structure of the motor is more compact, the volume is smaller, and the weight is lighter.

[0048] Specifically, the cross-sectional shapes of the first connecting portion 311 and the second connecting portion 411 are generally semi-circular, and the first groove 312 and the second groove 412 are generally semi-circular grooves.

[0049] In some embodiments, the surface of the end plate 11 facing the inner stator 3 is provided with a plurality of first threaded holes 111 and a plurality of second threaded holes 111. The stator support frame 7 is provided with a plurality of third through-holes corresponding to the first through-holes 313 and a plurality of fourth through-holes corresponding to the second through-holes 413. The first fastening member and the second fastening member are both threaded members. The first fastening member passes through the third through-hole and the first through-hole 313 and is threadedly engaged with the first threaded hole 111, and the second fastening member passes through the fourth through-hole and the second through-hole 413 and is threadedly engaged with the second threaded hole 111.

[0050] Thus, the connection between each of the inner stator 3 and the outer stator 4 and the stator support frame 7 and the end plate 11 is convenient and reliable, and the motor assembly efficiency is high.

[0051] Specifically, the first fastening member and the second fastening member are both bolts, and the end plate 11 is thickened at the first threaded hole 111 and the second threaded hole 111 to effectively ensure the connection strength between the bolt and the end plate 11.

[0052] In some embodiments, as Figure 1 shown, the motor further includes a second housing 120, an input shaft 130, an output shaft, and a gear transmission mechanism 140. The second housing 120 is integrally formed with the first housing 1, and the inner cavity of the second housing 120 communicates with the inner cavity of the first housing 1 through a first stepped hole. The input shaft 130 is rotatably installed in the second housing 120 and is coaxially connected to the rotor shaft 6. The output shaft is rotatably installed on the second housing 120, and the output shaft is drivingly connected to the input shaft 130 through the gear transmission mechanism 140.

[0053] The input shaft 130, the gear transmission mechanism 140, the output shaft, and the second housing 120 form a speed reducer, that is, a speed reducer for reducing speed and increasing torque is integrated on the motor. It can be directly connected to the vehicle wheels through the output shaft, making the structure of the motor more compact. Moreover, the integrally formed design of the first housing 1 and the second housing 120 further improves the motor assembly efficiency.

[0054] Specifically, the part of the rotor shaft 6 protruding from the first housing 1 is located inside the second housing 120 and is coaxially connected to the input shaft 130 through a spline. The gear transmission mechanism 140 can be a helical gear transmission mechanism 140. One of the helical gears is coaxially fixed on the input shaft 130, and one of the helical gears is coaxially fixed on the output shaft. In addition, one end of the second housing 120 facing away from the end plate 11 is provided with an opening. The input shaft 130, the gear transmission mechanism 140, and the output shaft are assembled inside the second housing 120 through this opening. The motor further includes an end cover, and the end cover is connected to the second housing 120 to close this opening.

[0055] In some embodiments, the rotor shaft 6, the inner rotor 2, and the inner stator 3 form a three-phase asynchronous motor. That is, the inner rotor 2 does not have permanent magnetic materials. The inner rotor 2 has a simple structure, low cost, and convenient maintenance, thereby effectively reducing the manufacturing cost and maintenance cost of the motor.

[0056] The outer rotor 5 and the outer stator 4 form a permanent magnet synchronous motor. By providing that the outer rotor 5 includes permanent magnetic materials, the volume of the outer rotor 5 can be reduced while having the same capacity, and further reducing the volume and weight of the motor.

[0057] The vehicle according to the embodiment of the present invention includes the motor as described in any of the above embodiments.

[0058] The technical advantages of the vehicle according to the embodiment of the present invention are the same as those of the motor in the above embodiments.

[0059] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0060] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0061] In the present utility model, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "connected to", "fixed" and the like shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0062] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0063] In the present utility model, terms such as "an embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0064] Although the above embodiments have been shown and described, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Any changes, modifications, substitutions and variations made by those of ordinary skill in the art to the above embodiments are within the protection scope of the present utility model.

Claims

1. A motor, characterized in that: The invention comprises a first housing, an inner rotor, an inner stator, an outer stator, an outer rotor, a rotor shaft and a stator support frame, wherein the rotor shaft, the inner rotor, the inner stator, the outer stator and the outer rotor are coaxial and arranged in sequence radially outwardly of the rotor shaft, and the inner rotor is coaxially connected to the rotor shaft; The first shell includes an end plate, the stator support frame is located on the side of the inner stator and the outer stator away from the end plate, the inner stator and the outer stator are connected between the end plate and the stator support frame by fasteners, and the rotor shaft is rotatably mounted on the end plate and the stator support frame.

2. The motor according to claim 1, characterized in that The motor further comprises a rotor hub, which is located in the first housing and coaxially connected to the outer rotor. At least a portion of the rotor hub is located on a side of the stator support frame away from the end plate and is used for driving connection with a crankshaft of an engine (150) or a flange of a range extender.

3. The motor according to claim 2, characterized in that The motor further comprises a first bearing, a first stepped hole is provided on the end plate, at least a portion of the rotor shaft passes through the first stepped hole and is exposed outside the first housing, and the first bearing is fitted between an inner wall surface of the first stepped hole and an outer peripheral surface of the rotor shaft; The motor further comprises a second bearing. A second stepped hole is provided on the stator support frame. The second bearing is fitted between the inner wall surface of the second stepped hole and the outer peripheral surface of the rotor shaft.

4. The motor according to claim 2, characterized in that The motor also includes a third bearing, a third stepped hole is provided on the rotor hub, the stator support frame includes a support portion located in the third stepped hole, and the third bearing is fitted between the inner wall surface of the third stepped hole and the outer peripheral surface of the support portion.

5. The motor according to claim 1, characterized in that The outer stator is provided with a plurality of first through holes extending along the axial direction of the outer stator, and the inner stator is provided with a plurality of second through holes extending along the axial direction of the inner stator. Any one of the first through holes and any one of the second through holes are arranged at intervals along the circumferential direction of the inner rotor. The outer stator is connected to the end plate and the stator support frame by a first fastener passing through the first through hole, and the inner stator is connected to the end plate and the stator support frame by a second fastener passing through the second through hole.

6. The motor according to claim 5, characterized in that The outer stator includes an outer stator yoke, and the inner stator includes an inner stator yoke. The inner circumferential surface of the outer stator yoke is provided with a plurality of first connection parts extending toward the inner stator yoke, and the outer circumferential surface of the inner stator yoke is provided with a plurality of second connection parts extending toward the outer stator yoke. The plurality of first connection parts and the plurality of second connection parts are alternately arranged along the circumferential direction of the inner rotor, and each of the first connection parts is provided with a first through hole, and each of the second connection parts is provided with a second through hole.

7. The motor according to claim 6, characterized in that The inner circumferential surface of the outer stator yoke is provided with a first groove for at least a portion of the second connection portion to be matched with, and the outer circumferential surface of the inner stator yoke is provided with a second groove for at least a portion of the first connection portion to be matched with.

8. The motor according to claim 5, characterized in that The surface of the end plate facing the inner stator is provided with a plurality of first threaded holes and a plurality of second threaded holes; The stator support frame is provided with a plurality of third through holes corresponding to the first through holes and a plurality of fourth through holes corresponding to the second through holes; The first fastener and the second fastener are both threaded members. The first fastener passes through the third through hole and the first through hole and is threadedly matched with the first threaded hole. The second fastener passes through the fourth through hole and the second through hole and is threadedly matched with the second threaded hole.

9. The motor according to claim 3, characterized in that The motor also includes: a second shell, the second shell being integrally formed with the first shell, and an inner cavity of the second shell being connected with the inner cavity of the first shell through the first stepped hole; an input shaft rotatably mounted in the second housing and coaxially connected to the rotor shaft; An output shaft and a gear transmission mechanism, wherein the output shaft is rotatably mounted on the second housing, and the output shaft is transmission-connected to the input shaft through the gear transmission mechanism.

10. The motor according to any one of claims 1 to 9, characterized in that: The rotor shaft, the inner rotor and the inner stator constitute a three-phase asynchronous motor; And / or, the outer rotor and the outer stator constitute a permanent magnet synchronous motor.

11. A vehicle, characterized in that: Comprising a motor according to any one of claims 1-10.

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