Motor and vehicle

Abstract

The utility model provides a motor and a vehicle. The motor comprises a stator component, a shell and a fastener. The stator component comprises a first cylindrical surface arranged on the peripheral side wall of the stator component; the shell is provided with an accommodating space, and the stator component is accommodated in the accommodating space; the shell comprises a second cylindrical surface arranged on the inner side wall, and the second cylindrical surface is in transition fit with the first cylindrical surface; and the fastener penetrates through the stator component along the axial direction of the motor and is fixedly connected with the shell, and the fastener is used for fixing the stator component in the accommodating space. According to the motor and the vehicle provided by the invention, the assembly coaxiality precision of the stator and the shell can be improved, and the operation performance of the motor and the vehicle is further improved.

Description

Technical Field

[0001] The present application belongs to the technical field of motor assembly, and in particular, relates to a motor and a vehicle. Background Art

[0002] The drive motor is the power source of new energy vehicles. As a key component for converting power and mechanical energy, its operating performance directly affects the performance of new energy vehicles. New energy drive motors are currently tending to have high torque power output, high speed, and compact structure. Under high-speed operation conditions, the coaxiality of the drive motor assembly has a great impact on the performance of the drive motor.

[0003] In order to allow the oil to flow better between the stator and the casing, the current drive motors are designed and assembled with a large clearance between the stator and the casing. Under the premise of a large clearance, the casing provides less support for the stator, resulting in poor coaxiality accuracy between the stator and the casing, which in turn affects the operating performance of the drive motor and new energy vehicles. Utility Model Content

[0004] In order to overcome the deficiencies in the prior art, the present application provides a motor and a vehicle, which can improve the coaxiality accuracy of the stator and housing assembly, thereby improving the operating performance of the motor and the vehicle.

[0005] In one aspect, the present application provides a motor, comprising:

[0006] The stator component comprises a first cylindrical surface arranged on a peripheral side wall of the stator component;

[0007] A housing having a receiving space, wherein the stator component is received in the receiving space; the housing comprises a second cylindrical surface arranged on an inner side wall, wherein the second cylindrical surface is transitionally matched with the first cylindrical surface; and

[0008] A fastener is arranged along the axial direction of the motor through the stator component and is fixedly connected to the housing, and the fastener is used to fix the stator component in the receiving space.

[0009] In a possible implementation manner, the first cylindrical surface and the second cylindrical surface are interference fit; or, the first cylindrical surface and the second cylindrical surface are clearance fit, and the clearance amount of the clearance fit is less than or equal to 0.08 mm.

[0010] In a possible implementation, the first cylindrical surface extends along the axial direction of the stator component, and the second cylindrical surface is arranged to extend along the axial direction of the housing; the length of the first cylindrical surface extending along the axial direction of the stator component is smaller than the length of the second cylindrical surface extending along the circumferential direction of the housing.

[0011] In a possible implementation, the stator component includes a stator body and a stator ear seat, the stator ear seat is arranged on a peripheral side wall of the stator body, and the fastener passes through the stator ear seat along the axial direction of the stator component and is fixedly connected to the housing.

[0012] In a possible embodiment, the shell includes a mounting end surface, the mounting end surface is arranged at one end of the second cylindrical surface and intersects with the second cylindrical surface, the second cylindrical surface and the mounting end surface enclose the accommodating space, and the mounting end surface abuts against one end of the stator component; the mounting end surface includes an annular surface and a convex surface that are connected, and the convex surface extends from the inside to the outside relative to the annular surface; the annular surface abuts against one end of the stator body, and the convex surface abuts against the stator ear seat.

[0013] In a possible implementation, the receiving space includes a main receiving cavity and an ear seat receiving cavity which are connected to each other, and the ear seat receiving cavity is arranged on the peripheral side of the main receiving cavity; the stator body is received in the main receiving cavity, and the stator ear seat is received in the ear seat receiving cavity.

[0014] In a possible embodiment, the inner side wall of the shell further includes an ear seat support surface, and the ear seat support surface is arranged at the connection between the inner side wall forming the main receiving cavity and the inner side wall forming the ear seat receiving cavity, and the ear seat support surface is an arc-shaped surface, and the ear seat support surface is used to support the stator ear seat.

[0015] In a possible implementation manner, the ear seat support surface is clearance-matched with the stator ear seat.

[0016] In a possible embodiment, an oil collecting groove and an oil guiding groove are provided on the shell, and both the oil collecting groove and the oil guiding groove are provided on the second cylindrical surface. The oil collecting groove is extended along the axial direction of the shell, and the oil guiding groove is extended along the circumferential direction of the shell, and the oil guiding groove is connected with the oil collecting groove.

[0017] In another aspect, the present application provides a vehicle, comprising:

[0018] The motor described above.

[0019] The motor and vehicle provided by the present application are axially penetrated through the stator component by fasteners and fixedly connected to the housing, so that the stator component is axially fixed in the housing. At the same time, by fitting the first cylindrical surface of the stator component and the second cylindrical surface of the housing, the fitting of the first cylindrical surface and the second cylindrical surface can radially limit the stator component, so that the stator component is circumferentially fixed in the housing. In the process of assembling the stator component and the housing, by limiting and fixing the axial direction of the stator component and limiting and fixing the circumferential direction of the stator component, it is beneficial to improve the installation accuracy of the stator component installed in the receiving cavity of the housing, and then improve the coaxiality accuracy of the stator component and the housing, so that the performance of the motor is more stable during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some implementation methods provided by the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 is an assembly diagram of a motor provided in one embodiment of the present application;

[0022] Figure 2 yes Figure 1 The motor shown is a partial enlarged view at A;

[0023] Figure 3 This is a structural diagram of a stator component and an oil pipe provided in one embodiment of the present application;

[0024] Figure 4 This is a structural diagram of a shell provided in one embodiment of the present application. DETAILED DESCRIPTION

[0025] The technical solution of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described implementation methods are only part of the implementation methods of the present application, rather than all the implementation methods. Based on the implementation methods in the present application, all other implementation methods obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0026] The following descriptions of the embodiments are with reference to the attached diagrams to illustrate specific embodiments that the present application can be implemented in. The directional terms mentioned in the description of the present application, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "top surface", "side", "bottom surface", "top wall", "side wall", "bottom wall", "inner side wall", "circumferential side wall", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the present application, 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 cannot be understood as a limitation on the present application. In the description of the present application, the "connection" and "coupling" involved, unless otherwise specified, include direct connection (coupling) and indirect connection (coupling).

[0027] The drive motor is the power source of new energy vehicles. As a key component for converting power and mechanical energy, the operating performance of the drive motor directly affects the performance of new energy vehicles. New energy drive motors currently tend to have high torque power output, high speed, and compact structure. Under high-speed operation conditions, the coaxiality of the drive motor assembly has a great impact on the performance of the drive motor. However, in order to allow the oil to flow better between the stator and the casing, the current drive motor has a large gap fit between the stator and the casing during design and assembly. Under the premise of large gap fit, the casing provides less support for the stator, resulting in poor coaxiality accuracy of the stator and casing assembly, which in turn affects the operating performance of the drive motor and new energy vehicles.

[0028] Based on the above technical problems, the present application provides a vehicle, the vehicle includes a motor, the motor is used as a power source of the vehicle to drive the vehicle to run. In the vehicle provided by the present application, the motor has a high assembly coaxiality accuracy, so that the motor has better performance under high-speed operation conditions, thereby improving the running performance of the vehicle.

[0029] It is understandable that in some other embodiments, the motor can also be used in mechanical equipment in the fields of industrial production, transportation, household appliances, medical equipment, etc., and the present application does not limit this.

[0030] The electrode provided in this application is described in detail below.

[0031] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 1 is an assembly diagram of a motor provided in one embodiment of the present application, Figure 2 yes Figure 1 The enlarged view of the motor at point A is shown. Figure 3is a structural diagram of a stator component and an oil pipe provided in one embodiment of the present application. Figure 4 This is a structural diagram of a shell provided in one embodiment of the present application.

[0032] The motor 100 provided in the present application includes a stator component 10, a housing 20, a fastener 30 and an oil pipe 40. The stator component 10 is installed in the housing 20, the fastener 30 passes through the stator component 10 and is fixedly connected to the housing 20, and the oil pipe 40 is installed on the housing 20.

[0033] In this embodiment, the stator component 10 includes a first cylindrical surface 11 disposed on the peripheral side wall of the stator component 10. The housing 20 has a receiving space 21, and the stator component 10 is received in the receiving space 21. The housing 20 includes a second cylindrical surface 22 disposed on the inner side wall, and the second cylindrical surface 22 is transitionally matched with the first cylindrical surface 11. The fastener 30 passes through the stator component 10 along the axial direction of the motor 100 and is fixedly connected to the housing 20, and the fastener 30 is used to fix the stator component 10 in the receiving space 21. Among them, the transition fit can be an interference fit or a clearance fit.

[0034] The motor 100 provided in the present application is axially penetrated through the stator component 10 by the fastener 30 and fixedly connected to the housing 20, so that the stator component 10 is axially fixed in the housing 20. At the same time, by the first cylindrical surface 11 of the stator component 10 and the second cylindrical surface 22 of the housing 20 being fitted, the first cylindrical surface 11 and the second cylindrical surface 22 are fitted to radially limit the stator component 10, so that the stator component 10 is circumferentially fixed in the housing 20. In the process of assembling the stator component 10 and the housing 20, by limiting and fixing the axial direction of the stator component 10 and limiting and fixing the circumferential direction of the stator component 10, it is beneficial to improve the installation accuracy of the stator component 10 installed in the receiving cavity of the housing 20, thereby improving the accuracy of the coaxiality of the stator component 10 and the housing 20, so that the performance of the motor 100 is more stable during operation, thereby making the operation performance of the vehicle better.

[0035] In this embodiment, the fasteners 30 are bolts, and there are four fasteners 30. The four bolts penetrate the stator component 10 respectively and are fixedly connected to the housing 20, so that the stator component 10 is stably installed in the receiving space 21 of the housing 20.

[0036] It can be understood that in some other embodiments, the number of fasteners 30 can be three, five, etc., and the present application does not impose any limitation on this.

[0037] In one embodiment, the first cylindrical surface 11 and the second cylindrical surface 22 are interference fit. Through the interference fit between the stator component 10 and the housing 20, the limiting effect of the second cylindrical surface 22 on the first cylindrical surface 11 can be ensured, thereby ensuring the coaxiality accuracy of the stator component 10 and the housing 20 after installation.

[0038] It is understandable that in some other embodiments, the first cylindrical surface 11 and the second cylindrical surface 22 may be clearance matched, and the clearance matched is a small clearance matched. The clearance amount of the small clearance matched between the first cylindrical surface 11 and the second cylindrical surface 22 is less than or equal to 0.08 mm. By the small clearance matched between the stator component 10 and the housing 20, and limiting the clearance amount of the small clearance matched to be less than or equal to 0.08 mm, the second cylindrical surface 22 plays a limiting role on the first cylindrical surface 11, thereby ensuring the coaxiality accuracy of the stator component 10 and the housing 20 after installation.

[0039] In one embodiment, the first cylindrical surface 11 extends along the axial direction of the stator component 10, and the first cylindrical surface 11 is in the shape of a cylindrical tube. The second cylindrical surface 22 is arranged to extend along the axial direction of the housing 20, and the second cylindrical surface 22 is in the shape of a cylindrical tube. The first cylindrical surface 11 is located inside the second cylindrical surface 22, and the first cylindrical surface 11 and the second cylindrical surface 22 are transitionally matched. The first cylindrical surface 11 extends along the axial direction, and the second cylindrical surface 22 also extends along the axial direction, so that the matching length of the first cylindrical surface 11 and the second cylindrical surface 22 in the axial direction is longer, which is conducive to strengthening the limiting effect of the second cylindrical surface 22 of the housing 20 on the first cylindrical surface 11 of the stator component 10, so as to further improve the coaxiality of the stator component 10 and the housing 20.

[0040] Specifically, the length of the first cylindrical surface 11 extending in the axial direction of the stator component 10 is less than the length of the second cylindrical surface 22 extending in the circumferential direction of the housing 20. By limiting the length of the first cylindrical surface 11 extending in the axial direction of the stator component 10 to be less than the length of the second cylindrical surface 22 extending in the circumferential direction of the housing 20, that is, the length of the second cylindrical surface 22 extending in the circumferential direction of the housing 20 is greater than the length of the first cylindrical surface 11 extending in the axial direction of the stator component 10, the first cylindrical surface 11 can be fully matched with the second cylindrical surface 22, so as to further strengthen the limiting effect of the second cylindrical surface 22 of the housing 20 on the first cylindrical surface 11 of the stator component 10, thereby facilitating the improvement of the coaxiality of the stator component 10 and the housing 20.

[0041] In one embodiment, the stator component 10 includes a stator body 12 and a stator ear seat 13, wherein the stator ear seat 13 is arranged on the peripheral side wall of the stator body 12, and the fastener 30 penetrates the stator ear seat 13 along the axial direction of the stator component 10 and is fixedly connected to the housing 20. The stator body 12 is cylindrical, and the stator ear seat 13 is a protruding structure arranged on the peripheral side wall of the stator body 12, and the stator ear seat 13 is extended along the axial direction of the stator body 12. Through the arrangement of the stator ear seat 13, it is convenient for the fastener 30 to penetrate the stator component 10 along the axial direction and fix the stator component 10 in the receiving space 21 of the housing 20. Moreover, since the stator ear seat 13 is arranged to protrude relative to the peripheral side wall of the stator body 12 to limit the rotation of the stator component 10 in the receiving space 21 of the housing 20, it is beneficial to improve the stability of the stator component 10 installed in the receiving space 21 of the housing 20.

[0042] Specifically, the inner side wall of the receiving space 21 of the housing 20 includes a mounting end surface 23, and the mounting end surface 23 abuts against one end of the stator component 10. The mounting end surface 23 is arranged at one end of the second cylindrical surface 22, and the mounting end surface 23 is arranged perpendicular to the second cylindrical surface 22, and the mounting end surface 23 and the second cylindrical surface 22 enclose the receiving space 21 of the housing 20. Among them, the mounting end surface 23 includes an annular surface 231 and a protruding surface 232 that are connected, and the protruding surface 232 is extended from the inside to the outside relative to the annular surface 231. The annular surface 231 abuts against one end of the stator body 12, and the protruding surface 232 abuts against the stator ear seat 13. The fastener 30 is fixed on the protruding surface 232 after passing through the stator ear seat 13. By setting the mounting end face 23, the annular surface 231 in the mounting end face 23 abuts against the stator body 12, and the protruding surface 232 of the mounting end face 23 abuts against the stator ear seat 13, so that the housing 20 supports the stator component 10 as a whole, which can improve the stability of the stator component 10 installed in the accommodating space 21 of the housing 20.

[0043] Specifically, the receiving space 21 includes a main receiving cavity 211 and an ear seat receiving cavity 212 which are connected to each other, and the ear seat receiving cavity 212 is arranged on the peripheral side of the main receiving cavity 211. The stator body 12 is accommodated in the main receiving cavity 211, and the stator ear seat 13 is accommodated in the ear seat receiving cavity 212. Among them, the first cylindrical surface 11 is arranged on the peripheral side wall of the stator body 12, and the second cylindrical surface 22 is arranged on the inner side wall of the main receiving cavity 211. When the stator body 12 is accommodated in the main receiving cavity 211, the stator ear seat 13 is accommodated in the ear seat receiving cavity 212, and the first cylindrical surface 11 of the stator body 12 and the second cylindrical surface 22 forming the main receiving cavity 211 are transitionally matched.

[0044] In this embodiment, the number of the stator body 12 is one, the number of the stator ear seats 13 is four, the number of the main receiving cavity 211 is one, the number of the ear seat receiving cavities 212 is four, one stator body 12 is received in one main receiving cavity 211, and four stator ear seats 13 are respectively received in four ear seat receiving cavities 212. Correspondingly, the mounting end surface 23 includes an annular surface 231 and four protruding surfaces 232, one mounting end surface 23 abuts against the end surface of one stator body 12, and four end surfaces of four stator ear seats 13 abut against four protruding surfaces 232 respectively.

[0045] It can be understood that in some other embodiments, the number of stator ear seats 13 can be two, three, five, etc., and correspondingly, the number of ear seat receiving cavities 212 can be two, three, five, etc., and the number of protruding surfaces 232 included in the mounting end surface 23 can be two, three, five, etc. It is only necessary to ensure that the number of stator ear seats 13, the number of ear seat receiving cavities 212, and the number of protruding surfaces 232 are equal, and the present application does not impose any restrictions on this.

[0046] Specifically, the inner side wall of the housing 20 further includes an ear seat support surface 24, which is disposed at the connection between the inner side wall forming the main receiving cavity 211 and the inner side wall forming the ear seat receiving cavity 212, and the ear seat support surface 24 is used to support the connection between the stator body 12 and the stator ear seat 13. The ear seat support surface 24 is in an arcuate surface, that is, the ear seat support surface 24 is a smooth transition surface between the inner side wall forming the main receiving cavity 211 and the inner side wall forming the ear seat receiving cavity 212. By providing the ear seat support surface 24, and the ear seat support surface 24 being used to support the stator ear seat 13, the stator body 12 and the stator ear seat 13 can be prevented from rotating around their own axis in the receiving space 21 of the housing 20, which is beneficial to improving the stability of the stator component 10 in the receiving space 21 of the housing 20.

[0047] More specifically, the ear seat support surface 24 is clearance-matched with the stator ear seat 13. The clearance-matched between the ear seat support surface 24 and the stator ear seat 13 can prevent the ear seat support surface 24 from interfering with the process of installing the stator component 10 in the receiving space 21 of the housing 20, so that the stator component 10 is easily installed in the receiving space 21 of the housing 20.

[0048] In one embodiment, an oil collecting groove 25 and an oil guiding groove 26 are provided on the inner side wall of the housing 20. The oil collecting groove 25 is provided to extend along the axial direction of the housing 20, and the oil guiding groove 26 is provided to extend along the circumferential direction of the housing 20. The oil guiding groove 26 is communicated with the oil collecting groove 25. The oil guiding groove 26 is used to collect oil and transport the oil to the oil collecting groove 25. The oil collecting groove 25 and the oil guiding groove 26 separate the second cylindrical surface 22 into a plurality of sub-cylindrical surfaces, and the plurality of sub-cylindrical surfaces are arranged at intervals along the circumferential direction of the housing 20. The plurality of sub-cylindrical surfaces are also arranged at intervals along the axial direction of the housing 20. Each sub-cylindrical surface is transitionally matched with the first cylindrical surface 11 to improve the circumferential limiting accuracy of the housing 20 on the stator component 10, which is conducive to improving the coaxiality accuracy of the assembly of the stator component 10 and the housing 20.

[0049] In this embodiment, there is one oil collecting groove 25 and two oil guiding grooves 26 . The two oil collecting grooves 25 are spaced apart along the circumference of the housing 20 . Both the two oil guiding grooves 26 are annular and communicate with the oil collecting groove 25 .

[0050] It is understandable that in some other embodiments, the number of the oil guide grooves 26 may be one, three, etc., and the oil guide grooves 26 may be spiral. It is only necessary to ensure that the oil guide grooves 26 and the oil collecting grooves 25 are connected, and the present application does not impose any restrictions on this.

[0051] The above are some implementation methods of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications are also considered to be within the scope of protection of the present application.

Claims

1. A motor, characterized in that: include: The stator component comprises a first cylindrical surface arranged on a peripheral side wall of the stator component; The housing has a receiving space, and the stator component is received in the receiving space; the housing includes a second cylindrical surface arranged on the inner side wall, and the second cylindrical surface is transitionally matched with the first cylindrical surface; as well as A fastener is arranged along the axial direction of the motor through the stator component and is fixedly connected to the housing, and the fastener is used to fix the stator component in the receiving space.

2. The motor according to claim 1, characterized in that The first cylindrical surface and the second cylindrical surface are interference fit; or, the first cylindrical surface and the second cylindrical surface are clearance fit, and the clearance amount of the clearance fit is less than or equal to 0.08 mm.

3. The motor according to claim 1, characterized in that The first cylindrical surface extends along the axial direction of the stator component, and the second cylindrical surface extends along the axial direction of the housing; the length of the first cylindrical surface extending along the axial direction of the stator component is shorter than the length of the second cylindrical surface extending along the circumferential direction of the housing.

4. The motor according to claim 1, characterized in that The stator component comprises a stator body and a stator ear seat, wherein the stator ear seat is arranged on a peripheral side wall of the stator body, and the fastener penetrates the stator ear seat along the axial direction of the stator component and is fixedly connected to the housing.

5. The motor according to claim 4, characterized in that The shell includes a mounting end surface, which is arranged at one end of the second cylindrical surface and intersects with the second cylindrical surface, the second cylindrical surface and the mounting end surface enclose the accommodating space, and the mounting end surface abuts against one end of the stator component; the mounting end surface includes an annular surface and a convex surface which are connected, and the convex surface extends from the inside to the outside relative to the annular surface; the annular surface abuts against one end of the stator body, and the convex surface abuts against the stator ear seat.

6. The motor according to claim 4, characterized in that The receiving space comprises a main receiving cavity and an ear seat receiving cavity which are connected to each other. The ear seat receiving cavity is arranged on the peripheral side of the main receiving cavity. The stator body is received in the main receiving cavity, and the stator ear seat is received in the ear seat receiving cavity.

7. The motor according to claim 6, characterized in that The inner side wall of the shell also includes an ear seat support surface, which is arranged at the connection between the inner side wall forming the main receiving cavity and the inner side wall forming the ear seat receiving cavity, and the ear seat support surface is an arc-shaped surface, and the ear seat support surface is used to support the stator ear seat.

8. The motor according to claim 7, characterized in that The ear seat support surface is clearance-matched with the stator ear seat.

9. The motor according to claim 1, characterized in that An oil collecting groove and an oil guiding groove are arranged on the shell, and both the oil collecting groove and the oil guiding groove are arranged on the second cylindrical surface. The oil collecting groove is extended along the axial direction of the shell, and the oil guiding groove is extended along the circumferential direction of the shell, and the oil guiding groove is connected with the oil collecting groove.

10. A vehicle, characterized in that: include: A motor as claimed in any one of claims 1 to 9.

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