Sleeve, stator assembly, motor and vehicle

Abstract

The invention relates to a sleeve, a stator assembly, a motor and a vehicle. The sleeve is arranged in a stator. The stator comprises a plurality of stator laminations stacked in the first direction, at least one through hole extending in the first direction is formed in the stator, the through hole is formed in the periphery of the stator, the sleeve is configured to be arranged in the through hole, and the sleeve is continuous in the first direction and extends from one end of the through hole to the other end of the through hole. The part, located in the through hole, of the sleeve is configured to be in contact with the stator lamination; the sleeve can limit displacement and deformation of the stator laminations in the radial direction of the stator in the process that the stator is fixed to the motor through bolts.

Description

Technical Field

[0001] The present application relates to the field of electric motors, and in particular to a sleeve, a stator assembly, an electric motor and a vehicle. Background Art

[0002] In the related art, the stator in the motor is formed by stacking multiple stator laminations, which are fixed to the battery housing by bolts. However, since the bolts exert a certain pressure on the stator laminations when fixing the stator laminations, the multiple stator laminations in the stator will be displaced and deformed in the radial direction of the stator after being fixed by the bolts. Summary of the invention

[0003] The embodiments of the present application provide a sleeve, a stator assembly, a motor and a vehicle, which can prevent the stator laminations from being displaced and deformed during the bolt fixing process, so as to at least partially solve the above-mentioned technical problems.

[0004] In order to achieve the above object, according to a first aspect of the present application, there is provided a sleeve, which is arranged in a stator, wherein the stator comprises a plurality of stator laminations stacked along a first direction, the stator is provided with at least one through hole extending along the first direction, the through hole is arranged at an outer peripheral position of the stator, and the sleeve is configured to be arranged in the through hole;

[0005] The sleeve is continuous in the first direction and extends from one end of the through hole to the other end of the through hole, and a portion of the sleeve located in the through hole is configured to contact the stator laminations.

[0006] In one embodiment, the sleeve has a first cavity extending along a first direction, and at least one first groove and at least one second groove are provided on the sleeve. The first groove extends from the inner wall of the sleeve to the interior of the sleeve and is connected with the first cavity, and the second groove is connected with the first cavity and the external environment.

[0007] In one embodiment, the sleeve has a first cavity extending along a first direction, and at least one first groove and at least one second groove are provided on the sleeve. The first groove extends from the inner wall of the sleeve to the interior of the sleeve and is connected with the first cavity, and the second groove is connected with the first cavity and the external environment.

[0008] In one embodiment, the sleeve comprises:

[0009] A first sub-portion extending along a first direction, a second cavity being disposed on the first sub-portion, and the second cavity extending along the first direction; and

[0010] The second sub-part extends along the first direction, a portion of the second sub-part is located in the second cavity and is interference fit with the first sub-part, so that a portion of the first sub-part in contact with the second sub-part is deformed.

[0011] In one embodiment, the first subsection includes a first subsection and a second subsection connected to each other in a first direction, and the second cavity is arranged on the first subsection;

[0012] The second subsection includes a third subsection and a fourth subsection connected to each other in the first direction, one end of the third subsection in the first direction abuts against the first subsection, and the fourth subsection is located in the second cavity and has an interference fit with the first subsection.

[0013] In one embodiment, a third groove is provided on the first sub-segment, and the third groove is connected to the second cavity and the external environment.

[0014] In one embodiment, a plurality of third grooves are provided;

[0015] The first sub-segment includes a plurality of second deformation parts, two adjacent third grooves are located on both sides of the second deformation part, and the second deformation part is connected to the second sub-segment.

[0016] In one embodiment, a size of the fifth subsegment is smaller than a size of the fourth subsegment, and the fifth subsegment is configured to guide the fourth subsegment to extend into the second cavity.

[0017] In one embodiment, the second cavity penetrates the first subsection in the first direction;

[0018] A third cavity is disposed in the second sub-section. The third cavity penetrates the second sub-section in the first direction, and the third cavity is communicated with the second cavity.

[0019] In one embodiment, the sleeve has a first cavity extending along a first direction. A fastener is inserted into the first cavity of the sleeve. The fastener cooperates with the sleeve to fix the stator in the motor.

[0020] According to a second aspect of the present application, there is provided a stator assembly, comprising:

[0021] A stator, comprising a plurality of stator laminations stacked along a first direction, wherein the stator is provided with at least one through hole extending along the first direction; and

[0022] At least one sleeve is disposed in the through hole and contacts the stator laminations.

[0023] According to a third aspect of the present application, a motor is provided, comprising a stator assembly.

[0024] According to a fourth aspect of the present application, a vehicle is provided, comprising an electric motor.

[0025] The sleeve of the embodiment of the present application is arranged in a through hole in the stator, that is, the sleeve abuts against a plurality of stator laminations in the radial direction of the stator, thereby limiting the displacement and deformation of the stator laminations in the radial direction of the stator when the stator is fixed to the motor by bolts.

[0026] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0028] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0029] Figure 1 is a schematic assembly diagram of a stator assembly provided in an exemplary embodiment of the present application;

[0030] Figure 2 is a schematic structural diagram of a stator provided in an exemplary embodiment of the present application;

[0031] Figure 3 is a schematic structural diagram of a sleeve provided in an exemplary embodiment of the present application;

[0032] Figure 4 is a schematic diagram of the assembly of a stator and a motor housing provided in an exemplary embodiment of the present application;

[0033] Figure 5 is a schematic structural diagram of a sleeve provided in an exemplary embodiment of the present application;

[0034] Figure 6 yes Figure 5 A magnified schematic diagram of part A;

[0035] Figure 7 is a schematic diagram of the internal structure of a sleeve provided in an exemplary embodiment of the present application;

[0036] Figure 8 is a schematic structural diagram of a sleeve provided in an exemplary embodiment of the present application;

[0037] Fig. 9 is a schematic structural diagram of a first subunit provided in an exemplary embodiment of the present application;

[0038] Fig.10 is a schematic structural diagram of a second subunit provided in an exemplary embodiment of the present application;

[0039] Fig.11 is a schematic cross-sectional view of a first sub-portion provided in an exemplary embodiment of the present application.

[0040] Description of Reference Numerals

[0041] 1000, sleeve; 1, stator; 11, stator laminations; 2, through hole; 3, fastener; 4, first groove; 5, second groove; 6, first deformation portion; 7, first sub-portion; 71, first sub-segment; 701, second deformation portion; 72, second sub-segment; 8, second cavity; 81, first sub-cavity; 82, second sub-cavity; 83, third sub-cavity; 9, second sub-portion; 91, third sub-segment; 92, fourth sub-segment; 93, fifth sub-segment; 10, third groove; 12, third cavity; 13, first cavity; 14, motor housing; 15, bearing chamber. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be described clearly and completely 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 of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0043] The present application proposes a sleeve. Figures 1 to 11 Please refer to the drawings of the present application, in which the X direction is the first direction, and the first direction X is used in the following description.

[0044] See also Figures 1 to 3 In some embodiments of the present application, the stator 1 includes a plurality of stator laminations 11 stacked along a first direction X, and the stator 1 is provided with at least one through hole 2 extending along the first direction X, and the through hole 2 is arranged at a peripheral position of the stator 1; wherein holes are arranged at positions corresponding to the through holes 2 on the stator laminations 11, and the plurality of stator laminations 11 are stacked in the first direction X, so that the plurality of holes on the plurality of stator laminations 11 are stacked to form the through hole 2.

[0045] In some embodiments of the present application, the sleeve 1000 is disposed in the through hole 2, the sleeve 1000 is continuous in the first direction X and extends from one end of the through hole 2 to the other end of the through hole 2, and the portion of the sleeve 1000 located in the through hole 2 is configured to contact the stator laminations 11; such a configuration enables the sleeve 1000 to contact each stator lamination 11 in the stator 1.

[0046] The sleeve 1000 extends along the first direction X, and the axial direction of the sleeve 1000 is the same as the first direction X.

[0047] In the technical solution of the present application, the sleeve 1000 is arranged in the through hole 2 in the stator 1, that is, the sleeve 1000 is abutted against the plurality of stator laminations 11 in the radial direction of the stator 1, so that the displacement and deformation of the stator laminations 11 in the radial direction of the stator 1 can be limited during the process of fixing the stator 1 to the motor by bolts.

[0048] It should be noted that the axial direction of the stator 1 is the same as the first direction X, and the radial direction of the stator 1 is any direction perpendicular to the axial direction of the stator 1. Similarly, the axial direction of the sleeve 1000 is the same as the first direction X, and the radial direction of the sleeve 1000 is any direction perpendicular to the axial direction of the sleeve 1000.

[0049] See also Figure 4 In some embodiments of the present application, the stator 1 is fixed to the motor housing 14 of the motor by bolts.

[0050] When the stator 1 is installed in the motor, it is necessary to ensure the coaxiality of the axis of the stator 1 and the axis of the bearing chamber 15 in the motor. The axis of the stator 1 is related to the axis of each stator lamination 11 in the stator 1. If the stator lamination 11 is displaced and deformed, the position of the axis of the stator 1 will change, and the coaxiality of the axis of the stator 1 and the axis of the bearing chamber 15 in the motor cannot be ensured, which will affect the magnetic field distribution of the motor and the comprehensive performance of the vibration and noise of the motor.

[0051] The sleeve 1000 of the embodiment of the present application can limit the displacement and deformation of the stator laminations 11 in the radial direction of the stator 1 when the stator 1 is installed in the motor, thereby ensuring the coaxiality of the axis of the stator 1 and the axis of the bearing chamber 15 in the motor, thereby improving the working efficiency of the motor and suppressing the vibration and noise of the motor.

[0052] In addition, in the embodiments of the present application, there is no limitation on the shape of the sleeve 1000. For example, in one embodiment, the sleeve 1000 located in the through hole 2 is a solid structure; in another embodiment, the sleeve 1000 located in the through hole 2 is a hollow structure.

[0053] In some embodiments of the present application, when the sleeve 1000 is a solid structure, the sleeve 1000 can be inserted into a part of the through hole 2 of the stator 1, and fasteners 3 are provided at the through holes 2 in the stator 1 where the sleeve 1000 is not placed, and the stator 1 is fixed to the motor housing 14 by the fasteners 3; at this time, the sleeve 1000 can limit the radial displacement and deformation of the stator laminations 11 in the stator 1.

[0054] In other embodiments of the present application, when the sleeve 1000 is a hollow structure, that is, the sleeve 1000 has a first cavity 13, a fastener 3 can be inserted into the sleeve 1000 and the stator 1 can be fixed to the motor housing 14 through the fastener 3; at this time, the sleeve 1000 can limit the radial displacement and deformation of the stator laminations 11 in the stator 1.

[0055] In addition, the sleeve 1000 can also space the fastener 3 and the stator lamination 11 to prevent the fastener 3 from directly contacting the stator lamination 11 and causing displacement and deformation of the stator lamination 11 .

[0056] Among them, the fastener 3 is a bolt. When the bolt fixes the stator 1, the nut part of the bolt abuts against one end of the sleeve 1000 in the first direction X, and does not abut against one side of the stator 1 in the first direction X. Therefore, during the bolt tightening process, the stator lamination 11 located on one side of the stator 1 in the first direction X is prevented from being squeezed by the bolt and deformed and displaced.

[0057] A gasket is further provided between the nut of the bolt and one end of the sleeve 1000 in the first direction X.

[0058] In some embodiments of the present application, the sleeve 1000 and the stator 1 are clearance-fitted or interference-fitted, so that the sleeve 1000 can limit the deformation and displacement of the stator laminations 11 .

[0059] See also Figures 5 to 7 In some embodiments of the present application, the sleeve 1000 has a first cavity 13, the first cavity 13 extends along the first direction X, and the sleeve 1000 is provided with at least one first groove 4 and at least one second groove 5, the first groove 4 extends from the inner wall of the sleeve 1000 to the inside of the sleeve 1000 and is connected with the first cavity 13, and the second groove 5 is connected with the first cavity 13 and the external environment. In this embodiment, since the inner wall of the sleeve 1000 is provided with the first groove 4, that is, part of the material located at the inner wall of the sleeve 1000 is missing, when a force in the first direction X is applied to the sleeve 1000, the sleeve 1000 will have a tendency to deform toward the hole wall of the through hole 2 in the radial direction of the sleeve 1000; in addition, the local rigidity of the sleeve 1000 provided with the second groove 5 is weak, so that the sleeve 1000 is more likely to deform when the force in the first direction X is applied to the sleeve 1000. In summary, in this embodiment, the sleeve 1000 is provided with a first groove 4 and a second groove 5, so that the sleeve 1000 can be deformed to abut against the hole wall of the through hole 2 when subjected to a force in the first direction X, thereby providing a certain preload force for the stator lamination 11 to limit the displacement and deformation of the stator lamination 11 in the radial direction of the stator 1.

[0060] It can be understood that, under the action of the force in the first direction X, the first groove 4 and the second groove 5 can guide the entire sleeve 1000 to deform.

[0061] In addition, since the first groove 4 and the second groove 5 can guide the sleeve 1000 to deform, the deformation position of the sleeve 1000 can be adjusted by adjusting the positions of the first groove 4 and the second groove 5 on the sleeve 1000, and then the sleeve 1000 with the first groove 4 and the second groove 5 of different shapes can be designed according to the assembly requirements of the rotor of different types of motors.

[0062] In one embodiment of the present application, after the sleeve 1000 is installed in the through hole 2 in the stator 1, a force in the first direction X is applied to the sleeve 1000 by a tool so that the sleeve 1000 is deformed; in another embodiment of the present application, a bolt may be inserted into the sleeve 1000, and when the bolt is tightened to the stator 1, the nut of the bolt presses against the sleeve 1000 in the first direction X, so that the sleeve 1000 is subjected to the force in the first direction X, so that the sleeve 1000 is deformed.

[0063] It should be noted that when the sleeve 1000 is deformed by the tooling, the sleeve 1000 undergoes plastic deformation, so as to avoid the sleeve 1000 returning to an undeformed state after the tooling is removed, thereby making the sleeve 1000 less effective in limiting the displacement and deformation of the stator laminations 11; when the sleeve 1000 is deformed by the bolts, since the bolts always maintain an assembly relationship with the sleeve 1000, the sleeve 1000 may undergo plastic deformation or elastic deformation.

[0064] In some embodiments of the present application, the first groove 4 extends along the circumference of the sleeve 1000; wherein, the thickness of the sleeve 1000 at the first groove 4 is less than the thickness of the sleeve 1000 without the first groove 4. Since the sleeve 1000 is subjected to the force in the first direction X, the first groove 4 extending along the circumference of the sleeve 1000 can make it easier for the sleeve 1000 to deform, thereby providing a certain preload force for the stator laminations 11 to limit the displacement and deformation of the stator laminations 11 in the radial direction of the stator 1.

[0065] In some embodiments of the present application, the second groove 5 extends along the axial direction of the sleeve 1000; this configuration is due to the fact that a plurality of stator laminations 11 are stacked in the first direction X, and the portions of the sleeve 1000 located on the circumferential side of the second groove 5 are susceptible to deformation, thereby corresponding to the plurality of stator laminations 11, thereby providing a certain preload force for the stator laminations 11 to limit the displacement and deformation of the stator laminations 11 in the radial direction of the stator 1.

[0066] In some embodiments of the present application, a plurality of second grooves 5 are provided, and the plurality of second grooves 5 are arranged along the circumference of the sleeve 1000. By providing a plurality of second grooves 5 arranged along the circumference of the sleeve 1000, the entire sleeve 1000 is easily deformed, thereby providing a certain preload force for the stator laminations 11 to limit the displacement and deformation of the stator laminations 11 in the radial direction of the stator 1.

[0067] In some embodiments of the present application, the sleeve 1000 includes at least one first deformation portion 6, two adjacent second grooves 5 are located on both sides of the first deformation portion 6, and the first groove 4 is arranged on the first deformation portion 6. In this way, when the sleeve 1000 is subjected to a force in the first direction X, the first deformation portion 6 is easily deformed in the radial direction of the sleeve 1000, thereby providing a certain preload force for the stator laminations 11 to limit the displacement and deformation of the stator laminations 11 in the radial direction of the stator 1.

[0068] It should be supplemented that, when a plurality of first deformation portions 6 are provided, a plurality of first grooves 4 are also provided, and at least one first groove 4 is provided on one first deformation portion 6 .

[0069] See also Figures 8 to 10 In some embodiments of the present application, the sleeve 1000 includes a first sub-portion 7 and a second sub-portion 9, the first sub-portion 7 extends along the first direction X, the first sub-portion 7 is provided with a second cavity 8, and the second cavity 8 extends along the first direction X; the second sub-portion 9 extends along the first direction X, a portion of the second sub-portion 9 is located in the second cavity 8 and contacts the first sub-portion 7, so that the contact portion of the first sub-portion 7 and the second sub-portion 9 is deformed; that is, in this embodiment, by inserting the second sub-portion 9 into the second cavity 8, a portion of the first sub-portion 7 can be deformed, so that the first sub-portion 7 provides a certain pre-tightening force for the stator laminations 11, so as to limit the displacement and deformation of the stator laminations 11 in the radial direction of the stator 1.

[0070] In some embodiments of the present application, the first sub-portion 7 and the second sub-portion 9 are interference fit.

[0071] In some embodiments of the present application, the first sub-section 7 includes a first sub-segment 71 and a second sub-segment 72 connected to each other in the first direction X, and the second cavity 8 is arranged on the first sub-segment 71; the second sub-section 9 includes a third sub-segment 91 and a fourth sub-segment 92 connected to each other in the first direction X, one end of the third sub-segment 91 in the first direction X abuts against the first sub-segment 71, and the fourth sub-segment 92 is located in the second cavity 8 and contacts the first sub-segment 71; in this embodiment, one end of the third sub-segment 91 in the first direction X abuts against the first sub-segment 71, so that the first sub-section 7 and the second sub-section 9 can be limited to continue to approach each other in the first direction X, and by inserting the fourth sub-segment 92 into the second cavity 8, a part of the first sub-segment 71 can be deformed, so that the first sub-segment 71 provides a certain pre-tightening force for the stator laminations 11, so as to limit the displacement and deformation of the stator laminations 11 in the radial direction of the stator 1.

[0072] In some embodiments of the present application, the first sub-segment 71 and the fourth sub-segment 92 are interference fit; that is, in this embodiment, the first sub-segment 71 is deformed by the extrusion of the fourth sub-segment 92, so that the first sub-segment 71 provides a certain preload force for the stator laminations 11 to limit the displacement and deformation of the stator laminations 11 in the radial direction of the stator 1.

[0073] In one embodiment of the present application, the second cavity 8 is disposed in the first subsection 71 and does not extend into the second subsection 72 ; in another embodiment of the present application, the second cavity 8 is disposed in the first subsection 71 and extends into the second subsection 72 .

[0074] It should be supplemented that the second sub-section 9 and the first sub-section 7 are subjected to the force in the first direction X so that the second sub-section 9 can be inserted into the second cavity 8. The force provided to the second sub-section 9 and the first sub-section 7 in the first direction X can be provided by bolts fixing the stator 1 or by tooling, which is not limited here.

[0075] In some embodiments of the present application, a third groove 10 is provided on the first sub-segment 71, and the third groove 10 is connected to the second cavity 8 and the external environment, that is, the third groove 10 penetrates the first sub-segment 71 in the radial direction of the first sub-segment 71; in this embodiment, the local stiffness of the first sub-segment 71 provided with the third groove 10 is weak, so that the sleeve 1000 is more likely to deform when subjected to a force in the first direction X, thereby providing a certain preload force for the stator laminations 11 to limit the displacement and deformation of the stator laminations 11 in the radial direction of the stator 1.

[0076] In some embodiments of the present application, the third groove 10 extends along the first direction X; with such a configuration, the portion of the first sub-segment 71 located on the circumferential side of the third groove 10 is susceptible to deformation, and the deformation position of the first sub-segment 71 corresponds to a plurality of stator laminations 11 stacked in the first direction X, thereby providing a certain preload force for the stator laminations 11 to limit the displacement and deformation of the stator laminations 11 in the radial direction of the stator 1.

[0077] In some embodiments of the present application, a plurality of third grooves 10 are provided, and the plurality of third grooves 10 are arranged along the circumferential direction of the first sub-segment 71. By providing a plurality of third grooves 10 arranged along the circumferential direction of the first sub-segment 71, the entire portion of the first sub-segment 71 is easily deformed, thereby providing a certain preload force for the stator laminations 11 to limit the displacement and deformation of the stator laminations 11 in the radial direction of the stator 1.

[0078] In some embodiments of the present application, the first sub-segment 71 includes a plurality of second deformation portions 701, two adjacent third grooves 10 are located on both sides of the second deformation portion 701, and the second deformation portion 701 is connected to the second sub-segment 72; in this embodiment, since the two adjacent second deformation portions 701 are not connected, when the fourth sub-segment 92 is inserted into the second cavity 8, the second deformation portion 701 is more likely to deform, thereby providing a certain preload force for the stator lamination 11 to limit the displacement and deformation of the stator lamination 11 in the radial direction of the stator 1.

[0079] See also Figure 10 to Figure 11 In some embodiments of the present application, the second sub-section 9 further includes a fifth sub-segment 93, which is located on a side of the fourth sub-segment 92 away from the third sub-segment 91 and connected to the fourth sub-segment 92; wherein the size of the fifth sub-segment 93 is smaller than the size of the fourth sub-segment 92, and the fifth sub-segment 93 is configured to guide the fourth sub-segment 92 to extend into the second cavity 8; it can be understood that, since the fourth sub-segment 92 is interference-fitted with the first sub-segment 71, that is, the size of the fourth sub-segment 92 is slightly larger than the size of the first sub-segment 71, in order to facilitate the operator or the operating tool to insert the fourth sub-segment 92 into the second cavity 8, a fifth sub-segment 93 having a size smaller than the fourth sub-segment 92 is provided, and when the first sub-section 7 and the second sub-section 9 are inserted in the first direction X, the fifth sub-segment 93 can enter the second cavity 8 without abutting against the cavity wall of the second cavity 8, thereby being able to play a role in guiding the fourth sub-segment 92 to be inserted into the second cavity 8, so as to facilitate the mutual cooperation between the first sub-section 7 and the second sub-section 9.

[0080] In some embodiments of the present application, there is a clearance fit between the outer circumferential surface of the fifth sub-segment 93 and the cavity wall of the second cavity 8 , or the size of the fifth sub-segment 93 is smaller than the size of the second cavity 8 .

[0081] It can be understood that the shape of the second cavity 8 is not limited. In one embodiment of the present application, the second cavity 8 can be composed of multiple cavities of different sizes and interconnected. In another embodiment of the present application, the dimensions of the second cavity 8 are the same at all locations.

[0082] In some embodiments of the present application, the second cavity 8 penetrates the first sub-portion 7 in the first direction X; a third cavity 12 is provided in the second sub-portion 9, the third cavity 12 penetrates the second sub-portion 9 in the first direction X, and the third cavity 12 is communicated with the second cavity 8; such a configuration enables the sleeve 1000 to be inserted with bolts, and the bolts provide force in the first direction X to the first sub-portion 7 and the second sub-portion 9 in the sleeve 1000 when tightening the stator 1.

[0083] In some embodiments of the present application, the second cavity 8 extends into the second sub-segment 72, and the second cavity 8 includes a first sub-cavity 81, a second sub-cavity 82 and a third sub-cavity 83 which are connected in sequence; wherein, the first sub-cavity 81 and the second sub-cavity 82 are both located on the second sub-segment 72, the third sub-cavity 83 is located on the first sub-segment 71, the second sub-cavity 82 is assembled and matched with the fifth sub-segment 93, and the third sub-cavity 83 is assembled and matched with the fourth sub-segment 92.

[0084] Among them, the size relationship between the fifth sub-segment 93 and the second sub-cavity 82 is not restricted. In one embodiment of the present application, the fifth sub-segment 93 and the cavity wall of the second sub-cavity 82 are gap-matched; in another embodiment of the present application, the size of the fifth sub-segment 93 is smaller than the size of the second sub-cavity 82, that is, there is no contact between the fifth sub-segment 93 and the cavity wall of the second sub-cavity 82.

[0085] After the first sub-section 7 and the second sub-section 9 are assembled, the first sub-cavity 81 and the third cavity 12 are used for the bolts to pass through, and there is no restriction on the radial size relationship between the first sub-cavity 81 and the third cavity 12 in the sleeve 1000. The radial sizes of the first sub-cavity 81 and the third cavity 12 in the sleeve 1000 can be equal or unequal.

[0086] The present application also provides a stator assembly, which includes a stator 1 and a sleeve 1000. The stator 1 includes a plurality of stator laminations 11 stacked along a first direction X. The stator 1 is provided with at least one through hole 2 extending along the first direction X, and the through hole 2 is provided at the outer periphery of the stator 1. The sleeve 1000 is provided in the through hole 2. Above the sleeve 1000, the sleeve 1000 is in contact with the stator laminations 11. Since the present stator assembly adopts all the technical solutions of all the above embodiments, it at least has the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0087] In some embodiments of the present application, the size of the sleeve 1000 in the first direction X is not less than the size of the through hole 2 in the first direction X; this configuration ensures that when the sleeve 1000 is deformed under the action of the force in the first direction X, the size of the sleeve 1000 in the first direction X is not less than the size of the through hole 2 in the first direction X, so that the sleeve 1000 can contact each stator lamination 11.

[0088] The present application also proposes a motor, including a stator assembly. As described above, since the motor adopts all the technical solutions of all the above embodiments, it at least has the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0089] The present application also proposes a vehicle, including a motor. As described above, since the vehicle adopts all the technical solutions of all the above embodiments, it at least has the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0090] The vehicle may be a fuel vehicle, a plug-in hybrid vehicle or a new energy vehicle, etc., and this application does not make any specific limitation on this.

[0091] When the motor in the embodiment of the present application is applied to a vehicle, it can be used as a driving motor of the vehicle or as a steering motor of the vehicle, and there is no limitation here.

[0092] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0093] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0094] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0095] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A sleeve, arranged in a stator, the stator comprising a plurality of stator laminations stacked along a first direction, the stator being provided with at least one through hole extending along the first direction, the through hole being arranged at an outer peripheral position of the stator, characterized in that: The sleeve is configured to be disposed in the through hole; The sleeve is continuous in the first direction and extends from one end of the through hole to the other end of the through hole, and the portion of the sleeve located in the through hole is configured to contact the stator laminations.

2. The sleeve according to claim 1, characterized in that The sleeve has a first cavity extending along the first direction. The sleeve is provided with at least one first groove and at least one second groove. The first groove extends from the inner wall of the sleeve to the inside of the sleeve and is connected with the first cavity. The second groove is connected with the first cavity and the external environment.

3. The sleeve according to claim 2, characterized in that The second groove is provided in plurality; The sleeve comprises a plurality of first deformation portions, and two adjacent second grooves are located on both sides of the first deformation portion; The first groove is disposed on the first deformation portion.

4. The sleeve according to claim 1, characterized in that The sleeve comprises: A first sub-portion extending along the first direction, wherein a second cavity is disposed on the first sub-portion, and the second cavity extends along the first direction; and The second sub-portion extends along the first direction, a portion of the second sub-portion is located in the second cavity and is interference fit with the first sub-portion, so that a portion of the first sub-portion in contact with the second sub-portion is deformed.

5. The sleeve according to claim 4, characterized in that The first subsection includes a first subsection and a second subsection connected to each other in the first direction, and the second cavity is arranged on the first subsection; The second sub-section includes a third sub-segment and a fourth sub-segment connected to each other in the first direction, one end of the third sub-segment in the first direction abuts against the first sub-segment, and the fourth sub-segment is located in the second cavity and is interference fit with the first sub-segment.

6. The sleeve according to claim 5, characterized in that A third groove is provided on the first sub-segment, and the third groove is connected to the second cavity and the external environment.

7. The sleeve according to claim 6, characterized in that The third groove is provided in plurality; The first sub-segment includes a plurality of second deformation portions, two adjacent third grooves are located on both sides of the second deformation portion, and the second deformation portion is connected to the second sub-segment.

8. The sleeve according to claim 5, characterized in that The second subsection further includes a fifth subsection, which is located at a side of the fourth subsection away from the third subsection and connected to the fourth subsection; The size of the fifth sub-segment is smaller than that of the fourth sub-segment, and the fifth sub-segment is configured to guide the fourth sub-segment to extend into the second cavity.

9. The sleeve according to claim 4, characterized in that The second cavity penetrates the first sub-section in the first direction; A third cavity is disposed in the second sub-section. The third cavity penetrates the second sub-section in the first direction, and the third cavity is communicated with the second cavity.

10. The sleeve according to claim 1, characterized in that The sleeve has a first cavity extending along the first direction. A fastener is inserted into the first cavity of the sleeve. The fastener cooperates with the sleeve to fix the stator in the motor.

11. A stator assembly, characterized in that: include: A stator, comprising a plurality of stator laminations stacked along a first direction, wherein the stator is provided with at least one through hole extending along the first direction, and the through hole is arranged at an outer peripheral position of the stator; and The sleeve according to any one of claims 1 to 10, wherein the sleeve is disposed in the through hole, and the sleeve is in contact with the stator laminations.

12. A motor, characterized in that: Comprising the stator assembly of claim 11.

13. A vehicle, characterized in that: Comprising the motor as claimed in claim 12.

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