Motor and vehicle
By setting a mating structure of protrusions and recesses in the motor, the problem of busbar displacement is solved, the stable positioning of the busbar terminals is achieved, the safety and reliability of the motor are improved, and the assembly process is simplified.
Patent Information
- Application Number
- CN202520231622.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-02-13
AI Technical Summary
In the prior art, when the busbar of the motor is welded to the stator, it is easy to shift, resulting in terminal position deviation, which affects the safety and reliability of the vehicle.
By setting a mating structure of protrusions and recesses in the housing and stator core, the position of the busbar is defined along the radial, circumferential and axial directions of the stator. Combined with the interference fit between the stator core and the housing, the terminal position of the busbar is ensured to be stable.
It effectively fixes the position of the busbar, optimizes the electrical contact between the terminals and the controller, improves the safety, reliability and stability of the vehicle, simplifies the assembly process, and reduces production costs.
Smart Images
Figure CN223928142U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of electric machines, in particular to an electric machine and a vehicle. BACKGROUND
[0002] With the increasing demand for intelligentization of vehicles, most mainstream new energy vehicles are equipped with hydraulic brake systems.
[0003] The hydraulic brake system includes an electric machine, which adopts a busbar output line structure and is connected to a controller through the terminals of the busbar. Since the electric machine is a safety component of the new energy vehicle, the position of the terminals of the busbar has a high requirement.
[0004] In the related art, the busbar is arranged on one side of the stator along the axial direction of the stator, and the busbar is welded to the winding of the stator and is limited and fixed by the stator. During assembly of the electric machine, the stator is prone to displacement relative to the casing of the electric machine, so that the busbar is displaced, the position of the terminals of the busbar deviates greatly, and the electrical contact between the terminals of the busbar and the controller is poor, which affects the safety and reliability of the vehicle in use. CONTENT OF THE UTILITY MODEL
[0005] The present application aims to at least solve one of the problems in the prior art or related art.
[0006] To this end, the first aspect of the present application provides an electric machine.
[0007] The second aspect of the present application provides a vehicle.
[0008] Therefore, the first aspect of the present application provides an electric machine, which includes a casing, a stator located in the casing, the stator including a stator core and a winding, the winding being wound around the stator core, and an outer peripheral wall of the stator core being in interference fit with an inner surface of the casing. One of the casing and the stator core is provided with a protruding portion, and the other is provided with a recessed portion, and the protruding portion is inserted into the recessed portion.
[0009] The electric machine provided by the present application includes a casing and a stator.
[0010] The stator is located in the casing.
[0011] The stator includes a stator core and a winding. The winding is connected to the busbar of the electric machine, and the stator serves as a mounting carrier of the busbar and has the function of mounting and positioning the busbar.
[0012] The one of the casing and the stator core is provided with a protrusion, and the other is provided with a recess, and the protrusion is inserted into the recess. That is, the casing is provided with the protrusion, and the stator core is provided with the recess, and the protrusion is inserted into the recess. Alternatively, the casing is provided with the recess, and the stator core is provided with the protrusion, and the protrusion is inserted into the recess. The protrusion and the recess cooperate to limit the cooperation size of the stator and the casing in the radial direction and the circumferential direction of the stator, so as to limit the setting position of the bus bar in the radial direction and the circumferential direction of the stator, and further limit the position of the terminal of the bus bar in the radial direction and the circumferential direction of the stator.
[0013] And the outer circumferential wall of the stator core is in interference fit with the inner surface of the casing to limit the cooperation size of the stator and the casing in the axial direction, the circumferential direction and the radial direction of the stator, so as to limit the setting position of the bus bar in the axial direction, the radial direction and the circumferential direction of the stator, and further limit the position of the terminal of the bus bar in the axial direction, the radial direction and the circumferential direction of the stator.
[0014] Therefore, the cooperation structure of the outer circumferential wall of the stator core and the inner surface of the casing, combined with the cooperation structure of the protrusion and the recess, limits the cooperation size of the stator and the casing in multiple directions in multiple ways, reduces the displacement of the stator relative to the casing when the motor is assembled, effectively fixes the bus bar, limits the position of the terminal of the bus bar, optimizes the position of the terminal of the bus bar, ensures the effectiveness of the electrical contact between the terminal of the bus bar and the controller of the vehicle during use of the vehicle, and provides structural support for ensuring the safety, reliability and stability of the vehicle.
[0015] It can be understood that the bus bar has a terminal, and the terminal of the bus bar is used for electrical connection with the controller of the vehicle.
[0016] It can be understood that the stator further includes a skeleton, which is located between the stator core and the bus bar.
[0017] According to the motor described above, the motor can further have the following additional technical features:
[0018] In some technical solutions, the motor further includes a bus bar located in the casing and arranged on one side of the stator in the axial direction of the stator, and the bus bar is connected with the winding.
[0019] In this technical solution, the motor further includes a bus bar, and the stator and the bus bar are both located in the casing. In the axial direction of the stator, the bus bar is arranged on one side of the stator.
[0020] The bus bar is connected with the winding. Specifically, the bus bar is connected with the winding by welding. That is, the stator serves as a mounting carrier of the bus bar and has the function of mounting and positioning the bus bar.
[0021] The outer peripheral wall of the stator core cooperates with the inner surface of the housing, and the protrusion and the recess cooperate to limit the fitting size of the stator and the housing in multiple directions in multiple ways, so as to reduce the displacement of the stator relative to the housing when the motor is assembled, effectively fix the bus bar.
[0022] In some embodiments, the protrusion and the recess both extend along the axial direction of the stator.
[0023] In this embodiment, the extending direction of the protrusion and the recess is limited.
[0024] The protrusion and the recess both extend along the axial direction of the stator. That is, the protrusion extends along the axial direction of the stator, and the recess extends along the axial direction of the stator.
[0025] The extending direction of the protrusion and the recess is adapted to the direction in which the stator is assembled into the housing, which simplifies the assembly process of the stator and the housing, reduces the assembly difficulty of the stator and the housing, and is beneficial to improving the assembly efficiency of the motor.
[0026] In some embodiments, the stator core has a first axial end surface and a second axial end surface; when the stator core is provided with the recess, the recess penetrates the first axial end surface and the second axial end surface.
[0027] In this embodiment, the structure of the stator core is further limited.
[0028] The stator core has a first axial end surface and a second axial end surface, that is, the first axial end surface and the second axial end surface are oppositely arranged along the axial direction of the stator.
[0029] When the housing is provided with the protrusion and the stator core is provided with the recess, the recess penetrates the first axial end surface and the second axial end surface.
[0030] Specifically, the stator core includes a plurality of stator laminations, and the plurality of stator laminations are stacked, and the recess penetrates the plurality of stator laminations along the axial direction of the stator. This arrangement not only meets the use requirement that the stator core is provided with the recess, but also simplifies the processing difficulty of the stator laminations, so that the plurality of stator laminations of the stator core can be punched by one die, which is beneficial to reducing the production cost of the stator core.
[0031] In addition, the recess penetrates the first axial end surface and the second axial end surface, and when the stator and the housing are assembled, the protrusion of the housing can be effectively inserted into the recess, which simplifies the assembly process of the stator and the housing and improves the assembly efficiency of the stator and the housing.
[0032] In some embodiments, the axial length of the protrusion is less than or equal to the axial length of the recess.
[0033] In this embodiment, the fitting structure of the protrusion and the recess is further limited.
[0034] The axial length of the convex portion is less than or equal to the axial length of the concave portion. That is, when the housing is provided with the convex portion and the stator core is provided with the concave portion, the length of the convex portion is less than or equal to the length of the concave portion along the axial direction of the stator.
[0035] Specifically, the length of the convex portion is equal to the length of the concave portion along the axial direction of the stator.
[0036] Specifically, the length of the convex portion is less than the length of the concave portion along the axial direction of the stator. This arrangement not only ensures that the convex portion and the concave portion cooperate to limit the cooperation size of the stator and the housing in the radial and circumferential directions of the stator, but also helps to ensure the circularity of the housing, reduce the processing difficulty of the housing, and ensure the cooperation size of the housing and other components of the motor.
[0037] In some embodiments, when the axial length of the convex portion is less than the axial length of the concave portion, the convex portion extends from one of the first axial end face and the second axial end face to the other, and the convex portion is spaced apart from the other of the first axial end face and the second axial end face; or when the axial length of the convex portion is less than the axial length of the concave portion, the convex portion is located between the first axial end face and the second axial end face.
[0038] In this embodiment, the cooperation structure of the convex portion and the concave portion is further limited.
[0039] When the axial length of the convex portion is less than the axial length of the concave portion, the convex portion extends from one of the first axial end face and the second axial end face to the other, and the convex portion is spaced apart from the other of the first axial end face and the second axial end face. That is, the convex portion extends from the first axial end face to the second axial end face, and the convex portion is spaced apart from the second axial end face. Alternatively, the convex portion extends from the second axial end face to the first axial end face, and the convex portion is spaced apart from the first axial end face.
[0040] Alternatively, when the axial length of the convex portion is less than the axial length of the concave portion, the convex portion is located between the first axial end face and the second axial end face.
[0041] This arrangement not only meets the use requirement that the axial length of the convex portion is less than the axial length of the concave portion, but also helps to ensure the circularity of the housing, reduce the processing difficulty of the housing, and ensure the cooperation size of the housing and other components of the motor.
[0042] In some embodiments, when the axial length of the convex portion is less than the axial length of the concave portion, the convex portion includes a plurality of convex segments, and the plurality of convex segments are spaced apart along the axial direction of the stator.
[0043] In this embodiment, the cooperation structure of the convex portion and the concave portion is further limited. When the axial length of the convex portion is less than the axial length of the concave portion, the convex portion includes a plurality of convex segments, and the plurality of convex segments are spaced apart along the axial direction of the stator. Each convex segment is inserted into the concave portion.
[0044] The setting meets the use requirement that the axial length of the convex part is less than the axial length of the concave part, and helps to ensure the circularity of the shell.
[0045] In some technical solutions, a part of the shell is recessed towards the stator to form the convex part; and the shell is a drawn metal shell.
[0046] In the technical solution, the structure of the shell is limited.
[0047] A part of the shell is recessed towards the stator to form the convex part. Specifically, a part of the inner surface of the shell is protruded towards the stator to form the convex part, and a part of the outer surface of the shell is protruded towards the stator to form the concave groove.
[0048] The setting meets the use requirement that the shell is provided with the convex part, and can reduce the processing difficulty of the shell, which helps to improve the structural strength of the shell at the convex part.
[0049] The shell is a drawn metal shell, i.e., the material of the shell is limited. Specifically, the shell forms the convex part by stamping.
[0050] Exemplarily, the shell is a drawn iron shell or a drawn aluminum shell.
[0051] In some technical solutions, the shell includes a first shell segment and a second shell segment, and along the axial direction of the stator, the first shell segment is connected to one side of the second shell segment. The first shell segment has the convex part, and the thickness of the first shell segment is greater than the thickness of the second shell segment.
[0052] In the technical solution, the structure of the shell is limited.
[0053] The shell includes a first shell segment and a second shell segment, and along the axial direction of the stator, the first shell segment is connected to one side of the second shell segment. That is, the first shell segment is connected to the axial side of the second shell segment.
[0054] The first shell segment has the convex part, and the thickness of the first shell segment is greater than the thickness of the second shell segment. That is, the thicknesses of the first shell segment and the second shell segment are different. By changing the thicknesses of the first shell segment and the second shell segment, the use requirement that the convex part is formed at the first shell segment is met. That is, by increasing the thickness of the first shell segment, the use requirement that the shell is provided with the convex part is met.
[0055] It can be understood that the outer surface of the first shell segment and the outer surface of the second shell segment are smoothly transitioned, and the inner surface of the first shell segment protrudes out of the inner surface of the second shell segment to form the convex part.
[0056] In some embodiments, the stator core has a first axial end surface and a second axial end surface; when the stator core is provided with the protruding portion, the protruding portion extends from the first axial end surface to the second axial end surface, and the axial length of the recess is greater than or equal to the axial length of the protruding portion.
[0057] In this embodiment, the cooperation structure of the casing and the stator is defined.
[0058] The stator core has a first axial end surface and a second axial end surface, i.e., the first axial end surface and the second axial end surface are oppositely arranged along the axial direction of the stator.
[0059] When the casing is provided with the recess and the stator core is provided with the protruding portion, the protruding portion extends from the first axial end surface to the second axial end surface.
[0060] Specifically, the stator core includes a plurality of stator laminations, and the plurality of stator laminations are stacked together. Each stator lamination has a protruding structure, and the protruding structures of the plurality of stator laminations enclose the protruding portion. This arrangement not only meets the use requirement that the stator core is provided with the protruding portion, but also simplifies the processing difficulty of the stator laminations, so that the plurality of stator laminations of the stator core can be punched by one die, which is conducive to reducing the production cost of the stator core.
[0061] In addition, the axial length of the recess is greater than or equal to the axial length of the protruding portion, and when the stator and the casing are assembled, the protruding portion of the stator core can be effectively inserted into the recess.
[0062] In some embodiments, the number of the protruding portions and the number of the recesses are both plural, each protruding portion cooperates with one recess, and the plurality of protruding portions are arranged at intervals along the circumferential direction of the stator.
[0063] In this embodiment, the number and the cooperation structure of the protruding portions and the recesses are defined.
[0064] The number of the protruding portions is plural, the number of the recesses is plural, the plurality of protruding portions are arranged at intervals along the circumferential direction of the stator, and each protruding portion cooperates with one recess. That is, the plurality of protruding portions and the plurality of recesses correspond to each other in cooperation.
[0065] This arrangement defines the cooperation structure of the plurality of recesses and the plurality of protruding portions, increases the cooperation area and the cooperation angle of the protruding portions and the recesses, and the plurality of recesses and the plurality of protruding portions cooperate to effectively define the cooperation size of the stator and the casing along the radial direction and the circumferential direction of the stator, so as to achieve the purpose of defining the arrangement position of the bus bar along the radial direction and the circumferential direction of the stator, and further define the position of the terminal of the bus bar along the radial direction and the circumferential direction of the stator.
[0066] In some embodiments, the stator core includes a plurality of sub-core blocks, the plurality of sub-core blocks are sequentially connected in a head-to-tail manner along the circumferential direction of the stator, and each sub-core block is provided with one of the recess and the protruding portion.
[0067] In this embodiment, the structure of the stator core is defined.
[0068] The stator core comprises a plurality of split cores, which are connected in sequence along the circumferential direction of the stator.
[0069] When the shell is provided with a plurality of protrusions and the stator core is provided with a plurality of recesses, each split core is provided with a recess.
[0070] When the shell is provided with a plurality of recesses and the stator core is provided with a plurality of protrusions, each split core is provided with a protrusion.
[0071] The arrangement makes each split core and the shell be insertedly fitted through the recesses and the protrusions.
[0072] Specifically, for the shell and each split core, the outer circumferential wall of the split core is in interference fit with the inner surface of the shell, and in combination with the fitting structure of the protrusions and the recesses, the fitting size of the split core and the shell is defined in multiple ways along multiple directions, so as to reduce the displacement of the stator relative to the shell when the motor is assembled, effectively fix the busbars, effectively limit the position of the terminals of the busbars, optimize the position degree of the terminals of the busbars, and ensure the effectiveness of the electrical contact between the terminals of the busbars and the controller of the vehicle during use of the vehicle, thereby providing structural support for ensuring the safety, reliability and stability of the vehicle in use.
[0073] In some technical solutions, optionally, the protrusions and the recesses are in shape matching; a cross section of the recess is taken along the axial direction perpendicular to the stator, and in the cross section, the inner contour line of the recess comprises an arc segment and / or a polyline segment.
[0074] In this technical solution, the fitting structure of the protrusions and the recesses is defined.
[0075] A cross section of the recess is taken along the axial direction perpendicular to the stator, and in the cross section, the inner contour line of the recess comprises an arc segment and / or a polyline segment.
[0076] Specifically, in the cross section, the inner contour line of the recess comprises an arc segment. For example, the recess is an arc-shaped groove, for example, the recess is a spherical groove.
[0077] Specifically, in the cross section, the inner contour line of the recess comprises a polyline segment. For example, the recess is a rectangular groove, for example, the recess is a trapezoidal groove.
[0078] Specifically, in the cross section, the inner contour line of the recess comprises an arc segment and a polyline segment.
[0079] In some technical solutions, optionally, the protrusions and the recesses are in interference fit; or the protrusions and the recesses are in transition fit.
[0080] In this technical solution, the specific fitting structure of the protrusions and the recesses is defined.
[0081] Exemplarily, the protrusions and the recesses are in interference fit.
[0082] Exemplarily, the convex portion and the concave portion are in transition fit.
[0083] In some embodiments, the stator core comprises a stator yoke and a plurality of stator teeth, each of the stator teeth is connected to an inner circumferential wall of the stator yoke, the plurality of stator teeth are arranged at intervals around an axis of the stator, and the convex portion or the concave portion of the stator core is arranged opposite to the stator teeth.
[0084] In this embodiment, the structure of the stator core is further limited.
[0085] The stator core comprises a stator yoke and a plurality of stator teeth. The stator yoke is annular in structure, each of the stator teeth is connected to an inner circumferential wall of the stator yoke, and the plurality of stator teeth are arranged at intervals around an axis of the stator.
[0086] When the stator core is provided with the convex portion, the convex portion is arranged opposite to the stator teeth.
[0087] When the stator core is provided with the concave portion, the concave portion is arranged opposite to the stator teeth.
[0088] By limiting the matching structure of the convex portion, the concave portion and the stator teeth, the influence on the magnetic circuit can be reduced while ensuring the effective matching size of the stator and the housing, that is, the influence of the convex portion and the concave portion on the magnetic circuit can be reduced, and the safety, stability and reliability of the motor can be ensured.
[0089] The second aspect of the present application provides a vehicle comprising the motor as in the first aspect.
[0090] The vehicle provided by the present application comprises the motor as in the first aspect, and therefore has all the beneficial effects of the motor, which will not be described one by one.
[0091] It is worth noting that the vehicle can be a new energy vehicle. The new energy vehicle includes a pure electric vehicle, a range-extended electric vehicle, a hybrid electric vehicle, a fuel cell electric vehicle, a hydrogen engine vehicle, etc.
[0092] The vehicle can also be a fuel vehicle.
[0093] Additional aspects and advantages of the present application will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS
[0094] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the following drawings, in which:
[0095] Figure 1 Fig. 1 shows a first partial structure schematic diagram of a motor of a first embodiment of the present application;
[0096] Figure 2Fig. 2 shows a second partial structural schematic diagram of the motor of the first embodiment of the present application;
[0097] Figure 3 Fig. 3 shows a third partial structural schematic diagram of the motor of the first embodiment of the present application;
[0098] Figure 4 Fig. 4 shows a partial structural schematic diagram of the motor of the second embodiment of the present application;
[0099] Figure 5 Fig. 5 shows a partial structural schematic diagram of the motor of the third embodiment of the present application;
[0100] Figure 6 Fig. 6 shows a structural schematic diagram of the housing of one embodiment of the present application;
[0101] Figure 7 Fig. 7 shows a structural schematic diagram of the split core of one embodiment of the present application.
[0102] wherein, Figures 1 to 7 The correspondence between the reference signs and the component names in the above description is as follows:
[0103] 10 motor, 100 housing, 110 first housing segment, 120 second housing segment, 200 stator, 210 stator core, 212 first axial end face, 214 second axial end face, 216 split core, 217 stator yoke, 218 stator tooth, 220 winding, 230 skeleton, 300 bus bar, 310 terminal, 400 protrusion, 410 protruding segment, 500 recess. DETAILED DESCRIPTION
[0104] In order to enable a more complete understanding of the above-mentioned objects, features and advantages of the present application, the present application will be described in further detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.
[0105] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, and therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below.
[0106] The motor 10 and the vehicle according to some embodiments of the present application will be described below with reference to Figures 1 to 7
[0107] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, an electric machine 10 according to some embodiments of the present application comprises a housing 100, a stator 200 and a busbar 300.
[0108] The stator 200 is located in the housing 100.
[0109] The stator 200 comprises a stator core 210 and a winding 220.
[0110] The winding 220 is wound around the stator core 210.
[0111] The outer peripheral wall of the stator core 210 is in interference fit with the inner surface of the housing 100.
[0112] One of the housing 100 and the stator core 210 is provided with a protrusion 400, and the other is provided with a recess 500, the protrusion 400 being inserted into the recess 500.
[0113] An electric machine 10 according to some embodiments of the present application comprises a housing 100 and a stator 200.
[0114] The stator 200 is located in the housing 100. The stator 200 comprises a stator core 210 and a winding 220. The winding 220 is connected with the busbar 300 of the electric machine 10, and the stator 200 serves as a mounting carrier of the busbar 300, and has the function of mounting and positioning the busbar 300.
[0115] One of the housing 100 and the stator core 210 is provided with a protrusion 400, and the other is provided with a recess 500, the protrusion 400 being inserted into the recess 500. That is, the housing 100 is provided with the protrusion 400, and the stator core 210 is provided with the recess 500, the protrusion 400 being inserted into the recess 500. Alternatively, the housing 100 is provided with the recess 500, and the stator core 210 is provided with the protrusion 400, the protrusion 400 being inserted into the recess 500. The protrusion 400 and the recess 500 cooperate to limit the fitting size of the stator 200 and the housing 100 along the radial direction and the circumferential direction of the stator 200, so as to limit the setting position of the busbar 300 along the radial direction and the circumferential direction of the stator 200, and further limit the position of the terminal 310 of the busbar 300 along the radial direction and the circumferential direction of the stator 200.
[0116] The outer peripheral wall of the stator core 210 is in interference fit with the inner surface of the housing 100, so as to limit the fitting size of the stator 200 and the housing 100 along the axial direction, the radial direction and the circumferential direction of the stator 200, so as to limit the setting position of the busbar 300 along the axial direction, the radial direction and the circumferential direction of the stator 200, and further limit the position of the terminal 310 of the busbar 300 along the axial direction, the radial direction and the circumferential direction of the stator 200.
[0117] Therefore, the outer peripheral wall of the stator core 210 cooperates with the inner surface of the housing 100, and cooperates with the protrusion 400 and the recess 500 to limit the cooperation size of the stator 200 and the housing 100 in multiple directions in multiple ways, so as to reduce the displacement of the stator 200 relative to the housing 100 when the motor 10 is assembled, effectively fix the bus bar 300, effectively limit the position of the terminal 310 of the bus bar 300, optimize the position of the terminal 310 of the bus bar 300, and ensure the effectiveness of the electrical contact between the terminal 310 of the bus bar 300 and the controller of the vehicle during use of the vehicle, thereby providing structural support for ensuring the safety, reliability and stability of the vehicle in use.
[0118] It can be understood that the bus bar 300 has a terminal 310, and the terminal 310 of the bus bar 300 is used to be electrically connected with the controller of the vehicle.
[0119] It can be understood that the stator 200 further includes a skeleton 230, and the skeleton 230 is located between the stator core 210 and the bus bar 300.
[0120] The embodiment provides a motor 10, in addition to the technical features of the above-mentioned embodiments, the embodiment further includes the following technical features, as shown in Figure 1 、 Figure 2 、 Figure 3 and Figure 5 The motor 10 further includes a bus bar 300, and the bus bar 300 is located in the housing 100.
[0121] Along the axial direction of the stator 200, the bus bar 300 is arranged on one side of the stator 200.
[0122] The bus bar 300 is connected with the winding 220.
[0123] In this embodiment, the motor 10 further includes a bus bar 300.
[0124] The stator 200 and the bus bar 300 are located in the housing 100. Along the axial direction of the stator 200, the bus bar 300 is arranged on one side of the stator 200.
[0125] The bus bar 300 is connected with the winding 220, specifically, the bus bar 300 is welded with the winding 220. That is, the stator 200 serves as a mounting carrier of the bus bar 300, and has the function of mounting and positioning the bus bar 300.
[0126] The outer peripheral wall of the stator core 210 cooperates with the inner surface of the housing 100, and cooperates with the protrusion 400 and the recess 500 to limit the fitting size of the stator 200 and the housing 100 in multiple directions in multiple ways, so as to reduce the displacement of the stator 200 relative to the housing 100 when the motor 10 is assembled, and effectively fix the busbar 300.
[0127] The motor 10 provided in the embodiment further comprises the following technical features in addition to the technical features of the above embodiments: The protrusion 400 and the recess 500 both extend along the axial direction of the stator 200.
[0128] In the embodiment, the extending directions of the protrusion 400 and the recess 500 are limited.
[0129] The protrusion 400 and the recess 500 both extend along the axial direction of the stator 200. That is, the protrusion 400 extends along the axial direction of the stator 200, and the recess 500 extends along the axial direction of the stator 200.
[0130] The extending directions of the protrusion 400 and the recess 500 are adapted to the direction in which the stator 200 is assembled into the housing 100, so as to effectively limit the stator 200, simplify the assembly process of the stator 200 and the housing 100, reduce the assembly difficulty of the stator 200 and the housing 100, and improve the assembly efficiency of the motor 10.
[0131] The motor 10 provided in the embodiment further comprises the following technical features in addition to the technical features of the above embodiments: As shown in Figure 1 and Figure 5 The stator core 210 has a first axial end face 212 and a second axial end face 214.
[0132] When the stator core 210 is provided with the recess 500, the recess 500 penetrates the first axial end face 212 and the second axial end face 214.
[0133] In the embodiment, the structure of the stator core 210 is further limited.
[0134] The stator core 210 has a first axial end face 212 and a second axial end face 214, that is, the first axial end face 212 and the second axial end face 214 are oppositely arranged along the axial direction of the stator 200.
[0135] When the housing 100 is provided with the protrusion 400 and the stator core 210 is provided with the recess 500, the recess 500 penetrates the first axial end face 212 and the second axial end face 214.
[0136] Specifically, the stator core 210 comprises a plurality of stator laminations which are stacked, and the recess 500 penetrates the plurality of stator laminations along the axial direction of the stator 200. This arrangement not only meets the use requirement that the stator core 210 is provided with the recess 500, but also simplifies the processing difficulty of the stator laminations, so that the plurality of stator laminations of the stator core 210 can be punched by one die, which is conducive to reducing the production cost of the stator core 210.
[0137] In addition, the recess 500 penetrates the first axial end surface 212 and the second axial end surface 214, and when the stator 200 and the housing 100 are assembled, the protrusion 400 of the housing 100 can be effectively inserted into the recess 500, which simplifies the assembly process of the stator 200 and the housing 100 and improves the assembly efficiency of the stator 200 and the housing 100.
[0138] The motor 10 provided in the embodiment further comprises the following technical feature in addition to the technical features of the above-mentioned embodiments: the axial length of the protrusion 400 is less than or equal to the axial length of the recess 500.
[0139] In this embodiment, the matching structure of the protrusion 400 and the recess 500 is further limited.
[0140] The axial length of the protrusion 400 is less than or equal to the axial length of the recess 500. That is, when the housing 100 is provided with the protrusion 400 and the stator core 210 is provided with the recess 500, the length of the protrusion 400 is less than or equal to the length of the recess 500 along the axial direction of the stator 200.
[0141] Specifically, the length of the protrusion 400 is equal to the length of the recess 500 along the axial direction of the stator 200.
[0142] Specifically, the length of the protrusion 400 is less than the length of the recess 500 along the axial direction of the stator 200. This arrangement not only ensures that the protrusion 400 and the recess 500 match to limit the matching size of the stator 200 and the housing 100 along the radial direction and the circumferential direction of the stator 200, but also facilitates ensuring the circularity of the housing 100, reducing the processing difficulty of the housing 100, and ensuring the matching size of the housing 100 and other components of the motor 10.
[0143] The motor 10 provided in the embodiment further comprises the following technical feature in addition to the technical features of the above-mentioned embodiments: as shown in Figure 1 When the axial length of the protrusion 400 is less than the axial length of the recess 500, the protrusion 400 extends from one of the first axial end surface 212 and the second axial end surface 214 to the other, and the protrusion 400 is arranged in spaced relation to the other of the first axial end surface 212 and the second axial end surface 214.
[0144] In this embodiment, the matching structure of the convex portion 400 and the concave portion 500 is further defined.
[0145] When the axial length of the convex portion 400 is less than the axial length of the concave portion 500, the convex portion 400 extends from one of the first axial end face 212 and the second axial end face 214 to the other, and the convex portion 400 is arranged spaced apart from the other of the first axial end face 212 and the second axial end face 214. That is, the convex portion 400 extends from the first axial end face 212 to the second axial end face 214, and the convex portion 400 is arranged spaced apart from the second axial end face 214. Alternatively, the convex portion 400 extends from the second axial end face 214 to the first axial end face 212, and the convex portion 400 is arranged spaced apart from the first axial end face 212.
[0146] This arrangement not only meets the use requirement that the axial length of the convex portion 400 is less than the axial length of the concave portion 500, but also helps to ensure the circularity of the machine shell 100, reduces the machining difficulty of the machine shell 100, and ensures the matching size of the machine shell 100 and other components of the motor 10.
[0147] In addition to the technical features of the above-mentioned embodiments, the motor 10 of the present embodiment further comprises the following technical features: when the axial length of the convex portion 400 is less than the axial length of the concave portion 500, the convex portion 400 is located between the first axial end face 212 and the second axial end face 214.
[0148] In this embodiment, the matching structure of the convex portion 400 and the concave portion 500 is further defined.
[0149] When the axial length of the convex portion 400 is less than the axial length of the concave portion 500, the convex portion 400 is located between the first axial end face 212 and the second axial end face 214.
[0150] This arrangement not only meets the use requirement that the axial length of the convex portion 400 is less than the axial length of the concave portion 500, but also helps to ensure the circularity of the machine shell 100, reduces the machining difficulty of the machine shell 100, and ensures the matching size of the machine shell 100 and other components of the motor 10.
[0151] In addition to the technical features of the above-mentioned embodiments, the motor 10 of the present embodiment further comprises the following technical features: as shown in Figure 4 When the axial length of the convex portion 400 is less than the axial length of the concave portion 500, the convex portion 400 comprises a plurality of convex segments 410.
[0152] The plurality of convex segments 410 are arranged spaced apart in the axial direction of the stator 200.
[0153] In this embodiment, the matching structure of the convex portion 400 and the concave portion 500 is further defined. When the axial length of the convex portion 400 is less than the axial length of the concave portion 500, the convex portion 400 comprises a plurality of convex segments 410 which are arranged axially spaced apart from each other along the stator 200, and each convex segment 410 is inserted into the concave portion 500.
[0154] This arrangement not only meets the use requirement that the axial length of the convex portion 400 is less than the axial length of the concave portion 500, but also helps to ensure the circularity of the casing 100 and the matching dimension of the casing 100 with other components of the motor 10.
[0155] In addition to the technical features of the above-mentioned embodiments, the motor 10 of the present embodiment further comprises the following technical features, such as Figure 1 As shown in the figure, a portion of the casing 100 is recessed towards the stator 200 to form the convex portion 400; and the casing 100 is a drawn metal shell.
[0156] In this embodiment, the structure of the casing 100 is defined.
[0157] A portion of the casing 100 is recessed towards the stator 200 to form the convex portion 400. Specifically, a portion of the casing 100 is stamped to form the convex portion 400. That is, a portion of the inner surface of the casing 100 is protruded towards the stator 200 to form the convex portion 400, and a portion of the outer surface of the casing 100 is protruded towards the stator 200 to form the concave groove.
[0158] This arrangement not only meets the use requirement that the casing 100 is provided with the convex portion 400, but also can reduce the processing difficulty of the casing 100, and helps to improve the structural strength of the casing 100 at the convex portion 400.
[0159] The casing 100 is a drawn metal shell, that is, the material of the casing 100 is defined. Specifically, the casing 100 is formed by stamping to form the convex portion 400.
[0160] For example, the casing 100 is a drawn iron shell or a drawn aluminum shell.
[0161] In addition to the technical features of the above-mentioned embodiments, the motor 10 of the present embodiment further comprises the following technical features, such as Figure 5 As shown in the figure, the casing 100 comprises a first shell segment 110 and a second shell segment 120.
[0162] Along the axial direction of the stator 200, the first shell segment 110 is connected to one side of the second shell segment 120.
[0163] The first shell segment 110 has the convex portion 400.
[0164] The thickness of the first shell segment 110 is greater than the thickness of the second shell segment 120.
[0165] In this embodiment, the structure of the casing 100 is defined.
[0166] The casing 100 includes a first casing segment 110 and a second casing segment 120, and the first casing segment 110 is connected to one side of the second casing segment 120 in the axial direction of the stator 200. That is, the first casing segment 110 is connected to the axial side of the second casing segment 120.
[0167] The first casing segment 110 has a protrusion 400, and the thickness of the first casing segment 110 is greater than the thickness of the second casing segment 120. That is, the thicknesses of the first casing segment 110 and the second casing segment 120 are different, and the thicknesses of the first casing segment 110 and the second casing segment 120 are changed to meet the use requirement that the protrusion 400 is formed at the first casing segment 110. That is, the thickness of the first casing segment 110 is increased to meet the use requirement that the casing 100 is provided with the protrusion 400.
[0168] It can be understood that the outer surface of the first casing segment 110 and the outer surface of the second casing segment 120 are smoothly transitioned, and the inner surface of the first casing segment 110 protrudes out of the inner surface of the second casing segment 120 to form the protrusion 400.
[0169] The motor 10 of the present embodiment further includes the following technical features in addition to the technical features of the above embodiment. The stator core 210 has a first axial end face 212 and a second axial end face 214.
[0170] When the stator core 210 is provided with the protrusion 400, the protrusion 400 extends from the first axial end face 212 to the second axial end face 214.
[0171] The axial length of the recess 500 is greater than or equal to the axial length of the protrusion 400.
[0172] In this embodiment, the matching structure of the casing 100 and the stator 200 is defined.
[0173] The stator core 210 has a first axial end face 212 and a second axial end face 214, that is, the first axial end face 212 and the second axial end face 214 are oppositely arranged in the axial direction of the stator 200.
[0174] When the casing 100 is provided with the recess 500 and the stator core 210 is provided with the protrusion 400, the protrusion 400 extends from the first axial end face 212 to the second axial end face 214.
[0175] Specifically, the stator core 210 includes a plurality of stator laminations stacked together, each stator lamination having a protruding structure, and the protruding structures of the plurality of stator laminations enclose the protrusion 400. This arrangement not only meets the use requirement that the stator core 210 is provided with the protrusion 400, but also simplifies the processing difficulty of the stator laminations, so that the plurality of stator laminations of the stator core 210 can be punched by one die, which is conducive to reducing the production cost of the stator core 210.
[0176] In addition, the axial length of the recess 500 is greater than or equal to the axial length of the protrusion 400, and when the stator 200 and the housing 100 are assembled, the protrusion 400 of the stator core 210 can be effectively inserted into the recess 500.
[0177] The motor 10 provided in the embodiment further includes the following technical features in addition to the technical features of the above-mentioned embodiments: the number of the protrusions 400 and the number of the recesses 500 are both plural.
[0178] Each protrusion 400 is matched with one recess 500.
[0179] The plurality of protrusions 400 are arranged at intervals along the circumference of the stator 200.
[0180] In this embodiment, the number and matching structure of the protrusions 400 and the recesses 500 are defined.
[0181] The number of the protrusions 400 is plural, the number of the recesses 500 is plural, the plurality of protrusions 400 are arranged at intervals along the circumference of the stator 200, and each protrusion 400 is matched with one recess 500. That is, the plurality of protrusions 400 and the plurality of recesses 500 are matched one by one.
[0182] This arrangement defines the matching structure of the plurality of recesses 500 and the plurality of protrusions 400, increases the matching area and the matching angle of the protrusions 400 and the recesses 500, and the plurality of recesses 500 and the plurality of protrusions 400 are matched to effectively define the matching size of the stator 200 and the housing 100 along the radial direction and the circumferential direction of the stator 200, so as to achieve the purpose of defining the arrangement position of the bus bar 300 along the radial direction and the circumferential direction of the stator 200, and further define the position of the terminal 310 of the bus bar 300 along the radial direction and the circumferential direction of the stator 200.
[0183] The motor 10 provided in the embodiment further includes the following technical features in addition to the technical features of the above-mentioned embodiments: as shown in Figure 7 The stator core 210 includes a plurality of block cores 216.
[0184] The plurality of block cores 216 are connected in sequence along the circumference of the stator 200.
[0185] Each block core 216 is provided with one of the recess 500 and the protrusion 400.
[0186] In this embodiment, the structure of the stator core 210 is defined.
[0187] The stator core 210 comprises a plurality of segment cores 216, which are connected in sequence along the circumferential direction of the stator 200.
[0188] When the housing 100 is provided with a plurality of protrusions 400 and the stator core 210 is provided with a plurality of recesses 500, each segment core 216 is provided with a recess 500.
[0189] When the housing 100 is provided with a plurality of recesses 500 and the stator core 210 is provided with a plurality of protrusions 400, each segment core 216 is provided with a protrusion 400.
[0190] This arrangement allows each segment core 216 to be insertedly fitted with the housing 100 through the recess 500 and the protrusion 400.
[0191] Specifically, for the housing 100 and each segment core 216, the outer circumferential wall of the segment core 216 is in interference fit with the inner surface of the housing 100, and in combination with the fitting structure of the protrusion 400 and the recess 500, the fitting size of the segment core 216 and the housing 100 is defined in multiple ways and in multiple directions, so as to reduce the displacement of the stator 200 relative to the housing 100 when the motor 10 is assembled, effectively fix the busbar 300, effectively limit the position of the terminal 310 of the busbar 300, optimize the position of the terminal 310 of the busbar 300, and ensure the effectiveness of the electrical contact between the terminal 310 of the busbar 300 and the controller of the vehicle during use of the vehicle, thereby providing structural support for ensuring the safety, reliability and stability of the vehicle in use.
[0192] The motor 10 provided in this embodiment further comprises the following technical features in addition to the technical features of the above-mentioned embodiments: the shapes of the protrusion 400 and the recess 500 are matched; the recess 500 is sectioned along an axial direction perpendicular to the stator 200, and in the section, the inner contour line of the recess 500 comprises an arc segment and / or a polyline segment.
[0193] In this embodiment, the fitting structure of the protrusion 400 and the recess 500 is defined.
[0194] The recess 500 is sectioned along an axial direction perpendicular to the stator 200, and in the section, the inner contour line of the recess 500 comprises an arc segment and / or a polyline segment.
[0195] Specifically, in the section, the inner contour line of the recess 500 comprises an arc segment. For example, the recess 500 is an arc-shaped groove, and for example, the recess 500 is a spherical groove.
[0196] Specifically, in cross section, the inner contour line of the recess 500 comprises a curved segment and a broken line segment.
[0197] Specifically, in cross section, the inner contour line of the recess 500 comprises a curved segment and a broken line segment.
[0198] The embodiment provides the motor 10, and in addition to the technical features of the above-mentioned embodiment, the embodiment further comprises the following technical features: the convex portion 400 is in interference fit with the recess 500; or the convex portion 400 is in transition fit with the recess 500.
[0199] In the embodiment, the specific fitting structure of the convex portion 400 and the recess 500 is limited.
[0200] Exemplarily, the convex portion 400 is in interference fit with the recess 500.
[0201] Exemplarily, the convex portion 400 is in transition fit with the recess 500.
[0202] The embodiment provides the motor 10, and in addition to the technical features of the above-mentioned embodiment, the embodiment further comprises the following technical features: as shown in the figure Figure 7 As shown in the figure, the stator core 210 comprises a stator yoke 217 and a plurality of stator teeth 218.
[0203] Each stator tooth 218 is connected to the inner peripheral wall of the stator yoke 217.
[0204] The plurality of stator teeth 218 are arranged at intervals around the axis of the stator 200.
[0205] The convex portion 400 or the recess 500 provided on the stator core 210 is arranged opposite to the stator tooth 218.
[0206] In the embodiment, the structure of the stator core 210 is further limited.
[0207] The stator core 210 comprises a stator yoke 217 and a plurality of stator teeth 218. The stator yoke 217 is of an annular structure, each stator tooth 218 is connected to the inner peripheral wall of the stator yoke 217, and the plurality of stator teeth 218 are arranged at intervals around the axis of the stator 200.
[0208] When the stator core 210 is provided with the convex portion 400, the convex portion 400 is arranged opposite to the stator tooth 218.
[0209] When the stator core 210 is provided with the recess 500, the recess 500 is arranged opposite to the stator tooth 218.
[0210] By limiting the matching structure of the convex portion 400, the concave portion 500 and the stator tooth 218, the influence on the magnetic circuit can be reduced while ensuring the effective matching size of the stator 200 and the shell 100, that is, the influence of the convex portion 400 and the concave portion 500 on the magnetic circuit can be reduced, and the safety, stability and reliability of the motor 10 can be ensured.
[0211] According to another embodiment of the present application, a vehicle comprises the motor 10 according to any one of the above embodiments.
[0212] The present application provides a vehicle comprising the motor 10.
[0213] The motor 10 comprises a shell 100, a stator 200 and a busbar 300.
[0214] The stator 200 and the busbar 300 are both located in the shell 100. Along the axial direction of the stator 200, the busbar 300 is arranged on one side of the stator 200.
[0215] The stator 200 comprises a stator core 210 and a winding 220. The busbar 300 is connected with the winding 220, specifically, the busbar 300 is welded with the winding 220. That is, the stator 200 serves as a mounting carrier of the busbar 300, and has the function of mounting and positioning the busbar 300.
[0216] One of the shell 100 and the stator core 210 is provided with a convex portion 400, and the other is provided with a concave portion 500, and the convex portion 400 is inserted into the concave portion 500. That is, the shell 100 is provided with the convex portion 400, and the stator core 210 is provided with the concave portion 500, and the convex portion 400 is inserted into the concave portion 500. Alternatively, the shell 100 is provided with the concave portion 500, and the stator core 210 is provided with the convex portion 400, and the convex portion 400 is inserted into the concave portion 500. The convex portion 400 and the concave portion 500 match to limit the matching size of the stator 200 and the shell 100 along the radial direction and the circumferential direction of the stator 200, so as to limit the setting position of the busbar 300 along the radial direction and the circumferential direction of the stator 200, and further limit the position of the terminal 310 of the busbar 300 along the radial direction and the circumferential direction of the stator 200.
[0217] And the outer circumferential wall of the stator core 210 is in interference fit with the inner surface of the shell 100 to limit the matching size of the stator 200 and the shell 100 along the axial direction, the circumferential direction and the radial direction of the stator 200, so as to limit the setting position of the busbar 300 along the axial direction, the radial direction and the circumferential direction of the stator 200, and further limit the position of the terminal 310 of the busbar 300 along the axial direction, the radial direction and the circumferential direction of the stator 200.
[0218] Therefore, the outer peripheral wall of the stator core 210 cooperates with the inner surface of the casing 100, and cooperates with the protrusion 400 and the recess 500 to limit the cooperation size of the stator 200 and the casing 100 in multiple directions in multiple ways, so as to reduce the displacement of the stator 200 relative to the casing 100 when the motor 10 is assembled, effectively fix the busbar 300, effectively limit the position of the terminal 310 of the busbar 300, optimize the position of the terminal 310 of the busbar 300, and ensure the effectiveness of the electrical contact between the terminal 310 of the busbar 300 and the controller of the vehicle during use of the vehicle, thereby providing structural support for ensuring the safety, reliability and stability of the vehicle.
[0219] It should be noted that the vehicle can be a new energy vehicle. The new energy vehicle includes a pure electric vehicle, a range-extended electric vehicle, a hybrid electric vehicle, a fuel cell electric vehicle, a hydrogen engine vehicle, etc.
[0220] The vehicle can also be a fuel vehicle.
[0221] Exemplarily, the motor 10 includes a stator 200, the stator 200 includes a stator core 210, the stator core 210 is provided with a recess 500, the recess 500 penetrates a first axial end surface 212 and a second axial end surface 214 of the stator core 210. The busbar 300 has a terminal 310. In the axial direction of the stator 200, the busbar 300 is arranged on one side of the stator 200, and the busbar 300 is welded to the winding 220 of the stator 200.
[0222] Exemplarily, the motor 10 further includes a casing 100, the casing 100 is a metal shell, the casing 100 is integrally punched with a protrusion 400, and the protrusion 400 cooperates with the recess 500.
[0223] Exemplarily, the recess 500 provided on the stator core 210 is an arc-shaped groove, a rectangular groove, a trapezoidal groove, etc., which are not listed one by one here.
[0224] Exemplarily, the number of the protrusion 400 and the recess 500 is one.
[0225] Exemplarily, the number of the protrusion 400 and the recess 500 is multiple, and the multiple protrusions 400 and the multiple recesses 500 are one-to-one corresponding cooperation. The multiple protrusions 400 are arranged at intervals along the circumferential direction of the stator 200, and the multiple recesses 500 are arranged at intervals along the circumferential direction of the stator 200.
[0226] Exemplarily, when the casing 100 is provided with the protrusion 400 and the stator core 210 is provided with the recess 500, the axial length of the protrusion 400 is less than or equal to the axial length of the recess 500.
[0227] Exemplarily, the recess 500 and the protrusion 400 are transitionally cooperated.
[0228] Exemplarily, the concave part 500 is in interference fit with the convex part 400. This arrangement can fix the stator core 210 in the circumferential direction of the stator 200.
[0229] Exemplarily, the bus bar 300 is welded with the winding 220, the convex part 400 on the casing 100 is in interference fit with the concave part 500 of the stator core 210, and the position of the bus bar 300, i.e. the position of the terminal 310 of the bus bar 300, is fixed.
[0230] Exemplarily, the present application realizes the interference fit between the stator core 210 and the casing 100 by arranging the convex part 400 on the sidewall of the casing and arranging the concave part 500 on the stator core 210, and the convex part 400 is in interference fit with the concave part 500. The position of the stator 200 in the circumferential direction is preferably limited, so as to optimize the position degree of the terminal 310 of the bus bar 300 located on the upper part of the stator 200 in the circumferential direction, and the stability of the motor 10 during operation is improved.
[0231] In the present application, the term "a plurality of" refers to two or more, unless otherwise explicitly limited. The terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, "connecting" can be fixed connection, or detachable connection, or integral connection; "connecting" can be direct connection, or indirect connection through intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0232] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "a specific embodiment" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. The above description is only the preferred embodiment of the present application, and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. An electric machine characterized in that, Comprising: a housing; a stator located in the housing, the stator comprising a stator core and windings, the windings being wound around the stator core, an outer circumferential wall of the stator core being in interference fit with an inner surface of the housing; one of the housing and the stator core is provided with a protrusion, and the other is provided with a recess, the protrusion being inserted into the recess.
2. The electric machine of claim 1, wherein, Further comprising: a busbar located in the housing along an axial direction of the stator, the busbar being located at one side of the stator, the busbar being connected with the windings.
3. The electric machine of claim 1 or 2, characterized in that The protrusion and the recess both extend along the axial direction of the stator.
4. The electric machine of claim 1 or 2, wherein, The stator core has a first axial end face and a second axial end face; When the stator core is provided with the recess, the recess penetrates through the first axial end face and the second axial end face.
5. The electric machine of claim 4, wherein, An axial length of the protrusion is less than or equal to an axial length of the recess.
6. The electric machine of claim 5, wherein, When the axial length of the protrusion is less than the axial length of the recess, the protrusion extends from one of the first axial end face and the second axial end face to the other, and the protrusion is spaced apart from the other of the first axial end face and the second axial end face; or When the axial length of the protrusion is less than the axial length of the recess, the protrusion is located between the first axial end face and the second axial end face.
7. The electric machine of claim 5, wherein, When the axial length of the protrusion is less than the axial length of the recess, the protrusion comprises a plurality of protruding segments, the plurality of protruding segments being spaced apart along the axial direction of the stator.
8. The electric machine of claim 4, wherein, A portion of the housing is recessed towards the stator to form the protrusion; The housing is a drawn metal shell.
9. The electric machine of claim 4, wherein, The housing comprises a first shell segment and a second shell segment, along the axial direction of the stator, the first shell segment being connected to one side of the second shell segment, the first shell segment having the protrusion, a thickness of the first shell segment being greater than a thickness of the second shell segment.
10. The electric machine of claim 1 or 2, wherein, The stator core has a first axial end face and a second axial end face; When the stator core is provided with the protrusion, the protrusion extends from the first axial end face to the second axial end face, an axial length of the recess being greater than or equal to an axial length of the protrusion.
11. The electric machine of claim 1 or 2, wherein, The number of the protrusions and the number of the recesses are both plural, each of the protrusions is matched with one of the recesses, and the plurality of protrusions are spaced apart along a circumferential direction of the stator.
12. The electric machine of claim 11, wherein, The stator core comprises a plurality of split cores, the plurality of split cores are sequentially connected in a head-to-tail manner along a circumferential direction of the stator, and each of the split cores is provided with one of the recesses and the protrusions.
13. The electric machine of claim 1 or 2, wherein, The protrusions and the recesses are in shape matching; A cross section of the recess is taken along a direction perpendicular to the axial direction of the stator, in the cross section, an inner contour line of the recess comprises an arc segment and / or a polyline segment.
14. The electric machine of claim 1 or 2, wherein, The protrusions and the recesses are in interference fit; or The protrusions and the recesses are in transition fit.
15. The electric machine of claim 1 or 2, wherein, The stator core comprises a stator yoke and a plurality of stator teeth, each of the stator teeth is connected to an inner circumferential wall of the stator yoke, the plurality of stator teeth are spaced apart along an axial line of the stator, and the protrusions or the recesses provided in the stator core are oppositely arranged with the stator teeth.
16. A vehicle characterized by comprising: Comprising: The electric machine according to any one of claims 1 to 15.