Stator assembly for motor, motor, electric drive assembly system and vehicle
By designing a stator assembly for motors and extending the insulating crawl path using the set groove of the end insulation plate, the problems of motor size expansion and high material cost due to the increase in the length of the insulation paper in the prior art are solved, and a compact motor structure and cost-effective integration is achieved.
Patent Information
- Application Number
- CN202311786077.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-22
- Publication Date
- 2025-06-24
AI Technical Summary
In existing motor stator assemblies, in order to ensure electrical insulation, it is necessary to set the insulating paper to be sufficiently long beyond the axial end of the stator core, which results in an increase in the length of the winding conductor, thereby increasing the overall size of the stator assembly and the motor, limiting the integration of the motor in the confined space and increasing the material cost.
A stator assembly for a motor is designed, including a stator core of a hollow cylinder, with a plurality of axially extending teeth and conductor grooves arranged on the peripheral wall, and a winding conductor is arranged in the conductor groove, the insulator surrounds the conductor in the conductor groove, and the insulating circuit path is extended through the set groove of the end insulating plate, avoiding the use of insulating paper and the increase in conductor length.
This ensures electrical insulation between the stator core and the winding conductor without increasing the axial dimensions of the stator assembly and the length of the winding conductor, saving materials, reducing costs, and facilitating the integration of the motor in confined spaces.
Smart Images
Figure CN120200401A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of electric motors, and more particularly to a stator assembly for an electric motor and an electric motor including such a stator assembly. Background Art
[0002] A stator assembly for an electric motor includes a stator core and conductors disposed in recesses of the stator core for forming windings. The conductors of the windings typically protrude at two axial ends of the stator core, for example to form bunches of the windings. The prior art typically uses insulating paper to achieve electrical insulation between the stator core and the winding conductors. To ensure that there is a sufficient creepage distance between the winding conductors outside the axial ends of the stator core and the axial ends of the stator core to avoid electrical conduction between the conductors and the stator core and thus have an adverse effect on the performance of the electric motor, the insulating paper needs to be set to extend beyond the corresponding axial ends of the stator core by a sufficient length, which increases the length of the winding conductors extending beyond the axial ends of the stator core and thus increases the axial dimension of the stator assembly, and inevitably makes the overall dimension of the electric motor using such a stator assembly too large. On the one hand, this is not conducive to the integration of the electric motor in a limited space, and on the other hand, it also unfavorably increases the material costs of the winding wires, the motor housing, etc.
[0003] There is still a need for a stator assembly for an electric motor with a completely new design that can solve the above technical problems. Summary of the Invention
[0004] To this end, the present disclosure provides a stator assembly for an electric motor. According to one embodiment, the stator assembly includes:
[0005] A stator core, the stator core being configured as a hollow cylinder, and a plurality of axially extending teeth being provided on the peripheral wall of the stator core, with conductor slots being formed between adjacent teeth;
[0006] A winding, the winding including conductors disposed in the conductor slots;
[0007] An insulator, the insulator surrounding the conductors within the conductor slots;
[0008] An end insulating plate, provided with an end plate radially extending along the outer end face of the axial end of the stator core and a plurality of sleeve slots axially extending from the end plate, each sleeve slot being inserted into a corresponding conductor slot so that the conductors extend through the corresponding sleeve slots.
[0009] Thus, in the present disclosure, the axially extending sleeve slots in the end insulating plates inserted into the corresponding conductor slots elongate the insulation creepage path around the corresponding winding conductors in a manner of axially inwardly extending from the axial ends of the stator core. More specifically, the insulation creepage path between the winding conductors located at the axial ends of the stator core and the stator core is elongated, so that there is no need to use insulating paper for the winding conductors extending beyond the axial ends of the stator core, thus not increasing the length of the winding conductors extending beyond the axial ends of the stator core, and therefore not increasing the axial dimension of the stator assembly, and being able to save the material of the winding conductors and increase the cost-effectiveness. When the stator assembly is used in a motor, this is also beneficial to forming a motor with a more compact overall structure, facilitating the integration of the motor in a limited space, and at the same time reducing the use of materials such as the housing of the motor, thereby reducing costs. In addition, the end plates of the end insulating plates radially extending along the outer end faces of the axial ends of the stator core create a circumferential insulation creepage path between the circumferentially adjacent sleeve slots, that is, a creepage distance for electrical insulation is generated between the circumferentially adjacent winding conductors extending beyond the axial ends of the stator core, ensuring the electrical insulation between the winding conductors.
[0010] According to various embodiments of the present disclosure, the stator assembly proposed by the present disclosure may include one or more of the following further developments.
[0011] In some embodiments, each of the sleeve slots is located between the corresponding insulator and the stator core in the corresponding conductor slot. This further ensures the electrical insulation between the stator core and the winding conductors.
[0012] In some embodiments, the end insulating plate is annular, and a flange extending from the end plate is provided on the radially inner side of the end insulating plate. The provision of this flange can further increase the insulation creepage path between the winding conductors located at the axial ends of the stator core and the stator core.
[0013] In some embodiments, the flange axially extends in a direction opposite to the extending direction of the sleeve slot. Due to the provision of the sleeve slot, the flange does not need to axially extend too much. More specifically, the flange does not need to axially extend outwardly in a manner that requires increasing the length of the winding conductors extending beyond the axial ends of the stator core.
[0014] In some embodiments, the end insulating plate further includes a plurality of separating ribs extending outwardly from the end plate, and each separating rib is provided at the joint between two adjacent sleeve slots. The provision of such separating ribs can further increase the creepage distance for electrical insulation between the adjacent winding conductors extending beyond the axial ends of the stator core.
[0015] In some embodiments, the separating ribs axially extend in a direction opposite to the extending direction of the sleeve slot. More specifically, the separating ribs do not need to axially extend outwardly in a manner that requires increasing the length of the winding conductors extending beyond the axial ends of the stator core.
[0016] In some embodiments, the end insulating plate is a single piece made of plastic. Thus, the end insulating plate can be made in a way that saves processes and materials and thus costs, and the end insulating plate in the form of a single piece saves the assembly process, which is further beneficial to cost-effectiveness.
[0017] In some embodiments, the sleeve groove of the end insulating plate is elastically deformable. This is beneficial to the installation of the sleeve groove of the end insulating plate in the conductor groove of the stator core in place and is beneficial to the retention of the end insulating plate on the stator core.
[0018] In some embodiments, the end plate of the end insulating plate covers at least a part or all of the outer end face of the axial end of the stator core.
[0019] In some embodiments, one end insulating plate is provided at each axial end of the stator core.
[0020] In some embodiments, the notch cross-section of the section of the conductor groove that receives the corresponding sleeve groove is larger than the notch cross-section of the remaining part of the conductor groove. On the one hand, this is beneficial to the installation of the sleeve groove of the end insulating plate in the corresponding conductor groove in place, while still ensuring the slot fill factor of the conductor groove, so that the performance of the stator assembly will not be adversely affected due to the setting of the end insulating plate.
[0021] According to another aspect of the present disclosure, the present disclosure also provides a motor, which includes the stator assembly according to any one of the above embodiments. And thus, the motor provided by the present disclosure has all the advantages described above regarding the stator assembly.
[0022] According to still another aspect of the present disclosure, the present disclosure also provides an electric drive assembly system, which includes the stator assembly or the motor as described above.
[0023] According to still another aspect of the present disclosure, the present disclosure also provides a vehicle, which includes the stator assembly, the motor as described above or the electric drive assembly system as described above. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following will briefly introduce the drawings required in the embodiments. It should be understood that the following drawings only show some embodiments of the present disclosure, and thus should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings. In the drawings:
[0025] Figure 1 is a perspective schematic view of a stator assembly according to an exemplary embodiment, in which most of the winding wires are removed;
[0026] Figure 2 is a perspective view of an end insulating plate of a stator assembly according to an exemplary embodiment;
[0027] Figure 3 is shown from another angle Figure 2 of the end insulating plate in
[0028] Figure 4 is shown from another angle Figure 1 of the stator assembly shown in
[0029] Figure 5 is a partial longitudinal sectional view of a stator assembly according to an exemplary embodiment;
[0030] Figure 6 is a partial longitudinal sectional view of a stator assembly according to an exemplary embodiment shown from another angle;
[0031] Figure 7 shows the extension lengths of the sleeving grooves, flanges and separating ribs of the end insulating plate according to an exemplary embodiment in a partially enlarged sectional view.
[0032] List of Reference Numerals
[0033] 10 Stator assembly
[0034] 100 Stator core
[0035] 110 Tooth
[0036] 120 Conductor groove
[0037] 130 Outer end face
[0038] 150, 160 Axial ends of the stator core
[0039] 170 Hollow part
[0040] 200 Conductor
[0041] 300 Insulator
[0042] 400 End insulating plate
[0043] 410 End plate
[0044] 420 Sleeving groove
[0045] 430 Flange
[0046] 440 Separating rib
[0047] 470 Hole
[0048] a First extension length
[0049] b Second extension length
[0050] c Third extension length Specific embodiments
[0051] Next, a stator assembly according to an embodiment of the present disclosure will be described in detail with reference to the accompanying drawings. To make the objectives, technical solutions, and advantages of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are some, but not all, of the embodiments of the present disclosure.
[0052] Therefore, the following detailed description of the embodiments of the present disclosure provided in conjunction with the accompanying drawings is not intended to limit the scope of the present disclosure claimed, but merely represents selected embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present disclosure without creative efforts fall within the scope of protection of the present disclosure.
[0053] Unless otherwise defined in the context, the singular forms include the plural forms. Throughout the specification, the terms "including", "having", etc. are used herein to specify the presence of the described features, numbers, steps, operations, elements, components, or combinations thereof, but do not exclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof.
[0054] In addition, even though ordinal terms such as "first", "second", etc. may be used to describe various components, these components are not limited by these terms, and these terms are only used to distinguish one element from other elements. For example, without departing from the scope of the present disclosure, the first component may be referred to as the second component, and similarly, the second component may be referred to as the first component.
[0055] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship when the disclosed product is normally placed, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present disclosure and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present disclosure.
[0056] As Figures 1-6 shown, a stator assembly 10 for an electric machine is proposed according to one aspect of the present disclosure. According to one embodiment, the stator assembly 10 includes a stator core 100, windings, an insulator 300, and an end insulating plate 400.
[0057] In one embodiment, as Figure 1 and 4 shown in -6, the stator core 100 is configured as a hollow cylinder, and a plurality of axially extending teeth 110 are provided on the circumferential wall of the stator core 100. More specifically, the teeth 110 open on the inner circumferential wall, and conductor slots 120 are formed between adjacent teeth 110. For example, the hollow portion 170 of the stator core 100 can accommodate a rotor (not shown) for forming an electric motor. The winding can include conductors 200 arranged in the conductor slots 120. In some embodiments, the stator core 100 of the stator assembly 10 can be formed by stacking thin metal plates. The stator core 100 can be provided with slots 120 that open inwardly on its inner circumferential wall, and these slots 120 are defined by stator teeth 110 in the circumferential direction. The slots 120 are for receiving windings that form each phase winding. The windings pass axially through the slots 120 and form loops that protrude at each axial end 150, 160 of the stator core 100. The windings are obtained, for example, by winding a continuous wire covered with enamel or conductive elements in the form of pins connected to each other by welding around the corresponding teeth 110. These windings form a multi-phase winding, which is connected, for example, in a star or delta configuration, and its output is connected to an inverter (not shown), which can also be used as a rectifier bridge.
[0058] It should be noted that, in the context of this document, "axial" refers to the direction along the central longitudinal axis X of the stator assembly 10 (schematically shown by a dashed line in Figure 1 ), and more specifically, the axial direction can be along the rotational axis of the rotor shaft of the electric motor including the stator assembly 100; "circumferential" is the direction that surrounds the axial direction, and more specifically, the direction that surrounds the central longitudinal axis X of the stator assembly 10; "radial" is the direction orthogonal to the central longitudinal axis X of the stator assembly 100, and more specifically, the direction that extends from the central longitudinal axis X of the stator assembly 100 in a direction perpendicular to the central longitudinal axis X towards the outside of the stator assembly 100.
[0059] In some embodiments, as Figures 5-6 shown, the insulator 300 then surrounds the winding conductor 200 within the corresponding conductor slot 120 to ensure electrical insulation between the conductor 200 and the stator core 100. More specifically, the insulator 300 is insulating paper. For example, the insulating paper can be folded to match the shape of the inner circumference of the conductor slot 120 so as to be able to be laid in the conductor slot 120 in a form-fitting manner.
[0060] In some embodiments, as Figures 2-6As shown, the end insulating plate 400 may be provided with an end plate 410 extending radially along the outer end face 130 of the axial end 150 of the stator core 100 and a plurality of sleeve slots 420 axially extending from the end plate 410. Each sleeve slot 420 is inserted into a corresponding conductor slot 120 such that the conductor 200 received in the corresponding conductor slot 120 can also extend through the corresponding sleeve slot 420 and reach beyond the axial end 150 of the stator core 100, for example, to form a bun-shaped portion. In some embodiments, the end plate 410 of the end insulating plate 400 covers at least a part of the outer end face 130 of the corresponding axial end 150 of the stator core 100. In other embodiments, the end plate 410 of the end insulating plate 400 covers the entire outer end face 130 of the corresponding axial end 150 of the stator core 100. More specifically, the end plate 410 of the end insulating plate 400 is disposed against the outer end face 130 of the corresponding axial end 150 of the stator core 100. More specifically, the sleeve slots 420 may be disposed against the inner wall of the corresponding conductor slots 120.
[0061] Thus, in the present disclosure, the axially extending sleeve slots 420 of the end insulating plate 400 inserted into the corresponding conductor slots 120 of the stator core 100 elongate the insulation creepage path around the corresponding winding conductors 200 in a manner of axially inwardly extending from the axial ends 150, 160 of the stator core 100. More specifically, it elongates the insulation creepage path between the winding conductors 200 located at the axial ends 150, 160 of the stator core 100 and the stator core 100. Thus, it is no longer necessary to use insulating paper for the winding conductors 200 extending beyond the axial ends 150, 160 of the stator core 100, thereby not increasing the length of the winding conductors 200 extending beyond the axial ends 150, 160 of the stator core 100, and thus not increasing the axial dimension of the stator assembly 10, and being able to save the material of the winding conductors 200 and increase the cost effectiveness. When the stator assembly 10 is used in a motor, this is also beneficial to forming a motor with a more compact overall structure, facilitating the integration of the motor in a limited space, and at the same time reducing the use of materials such as the housing of the motor, thereby reducing costs. In addition, the end plate 410 of the end insulating plate 400 extending radially along the outer end faces 130 of the axial ends 150, 160 of the stator core 100 generates a circumferential insulation creepage path between the circumferentially adjacent sleeve slots 420, that is, in the circumferential direction, an insulation creepage distance is generated between the adjacent winding conductors 200 extending beyond the axial ends 150, 160 of the stator core 100, ensuring the electrical insulation between the winding conductors 200.
[0062] More specifically, the end insulating plate 400 of the present disclosure may be provided at one or both of the two axial ends 150, 160 of the stator core 100.
[0063] In some embodiments, as Figures 5-6As shown, the sleeve groove 420 of the end insulating plate 400 can be set to be located between the corresponding insulator 300 and the stator core 100. This further ensures the electrical insulation between the stator core 100 and the winding conductor 200. In a more specific embodiment, the notch cross-section of the section of the conductor groove 120 of the stator core 100 that receives the corresponding sleeve groove 420 can be set to be larger than the notch cross-section of the remaining part of the conductor groove 120. On the one hand, this is conducive to the installation of the sleeve groove 420 of the end insulating plate 400 in the corresponding conductor groove 120, and at the same time, it can still ensure the slot fill factor of the conductor groove 120, so that the performance of the stator assembly 10 will not be adversely affected due to the setting of the end insulating plate 400. More specifically, when end insulating plates 400 are provided at both axial ends 150 and 160 of the stator core 100 of the stator assembly 10, the conductor groove 120 of the stator core 100 is formed such that the notch cross-section near the two axial ends is larger than the notch cross-section of the axial middle section, and the end section with a large notch cross-section is used to receive the sleeve groove 420 and the optional insulator 300.
[0064] In some embodiments, the end insulating plate 400 can be set such that its sleeve groove 420 is elastically deformable. This is conducive to the installation of the sleeve groove 420 of the end insulating plate 400 in the conductor groove 120 of the stator core 100 and is conducive to the retention of the end insulating plate 400 on the stator core 100.
[0065] In some embodiments, as Figures 2-4 shown, the end insulating plate 400 is integrally set to be annular. For example, the end insulating plate 400 can be provided with a central hole 470 aligned with the hollow portion 170 of the stator core 100 to, for example, allow the rotor extending in the hollow portion 170 of the stator core 100 to be received. In some embodiments, as Figures 2-6 shown, the end insulating plate 400 is provided with a flange 430 extending from its end plate 410 on the radially inner side. The setting of this flange 430 can further increase the insulation creepage path between the winding conductor 200 located at the axial ends 150 and 160 of the stator core 100 and the stator core 100. In an embodiment not shown, the flange 430 can extend radially from the radially inner side of the end insulating plate 400, for example, the side that defines its central hole 440. In another specific embodiment, as shown, the flange 430 can axially extend in a direction opposite to the extending direction of the sleeve groove 420. Due to the setting of the sleeve groove 420, the flange 430 does not have to axially extend too much to achieve a sufficiently long insulation creepage path. More specifically, the flange 430 does not have to axially extend outward in a way that requires increasing the length of the winding conductor 200 extending beyond the axial ends 150 and 160 of the stator core 100. It should be understood that the flange 430 can also extend in other directions as long as it can increase the insulation creepage path and does not increase the axial extension length of the conductor 200.
[0066] In a specific embodiment, as Figure 7 shown, the axial extension length of the sleeve slot is referred to as the first extension length a, and the first extension length a should not be less than the minimum allowable creepage distance between the winding conductors 200 at the axial ends 150, 160 of the stator core 100 and the stator core 100. That is, if it is less than the minimum allowable creepage distance, there will be a risk of current creeping from the winding conductors 200 at the axial ends 150, 160 of the stator core 100 to the stator core 100. The extension length of the flange 430 of the end insulating plate 400, more specifically, the linear extension length from the connection portion with the end plate 410 of the end insulating plate 400 to the free edge of the flange 430 is referred to as the second extension length b, which is less than the first extension length a, and more specifically, b = a / 2 is set.
[0067] In some embodiments, as Figures 3-6 shown, the end insulating plate 400 may further include a plurality of partition ribs 440 extending outward from its end plate 410, and each partition rib 440 is disposed at the joint between two adjacent sleeve slots 420. The setting of such partition ribs 440 can further increase the insulation creepage path between the winding conductors 200 extending out of the axial ends 150, 160 of the stator core 100 adjacent to each other. In some embodiments, as shown in the figure, the partition ribs 440 axially extend in a direction opposite to the extension direction of the sleeve slots 420. More specifically, the partition ribs 440 do not have to axially extend outward in a manner that requires increasing the length of the winding conductors 200 extending out of the axial ends 150, 160 of the stator core 100 to achieve a sufficiently long insulation creepage path. In some embodiments, as shown in the figure, the partition ribs 440 are set to radially extend outward from the above-mentioned flange 430 of the end insulating plate 400 beyond the radial extension range of the adjacent sleeve slots 420. More specifically, in an embodiment not shown, the partition ribs 440 may have a triangular or trapezoidal radial cross-section, that is, it includes inclined surfaces to further increase the creepage path. It should be understood that the partition ribs 440 may extend in other directions as long as they can increase the insulation creepage path and do not increase the axial extension length of the conductors 200. In a specific embodiment, as Figure 7 shown, the extension length of the partition rib 440 from its connection portion with the end plate 410 to its free edge, referred to as the third extension length c, is less than the first extension length a, and the specific value depends on the creepage distance between the winding conductors 200 extending out of the axial ends 150, 160 of the stator core 100 adjacent in the circumferential direction.
[0068] In some embodiments, as Figures 2-4As shown, the end insulating plate 400 is a single piece, that is, an integral part. More specifically, the end insulating plate 400 is made of plastic. Thus, the end insulating plate 400 can be made in a way that saves processes and materials and thus costs, and the end insulating plate 400 in the form of a single piece saves the assembly process, which is further beneficial to cost-effectiveness.
[0069] According to another aspect of the present disclosure, the present disclosure also provides a motor, which includes the stator assembly 10 according to any one of the above embodiments. And thus, the motor provided by the present disclosure has all the advantages described above regarding the stator assembly 10.
[0070] According to another aspect of the present disclosure, the present disclosure also provides an electric drive assembly system, which includes the stator assembly or the motor described above.
[0071] According to another aspect of the present disclosure, the present disclosure also provides a vehicle, which includes the stator assembly, the motor or the electric drive assembly system described above, and has the functions described above. The vehicle can be an electrified vehicle, such as a battery electric vehicle (BEV), a hybrid electric vehicle (HEV), a plug-in hybrid electric vehicle (PHEV), a range extended electric vehicle, a fuel cell electric vehicle (FCEV). The vehicle can also be a hydrogen energy vehicle.
[0072] The exemplary embodiments of the stator assembly proposed by the present invention have been described in detail above with reference to the preferred embodiments. However, those skilled in the art can understand that, without departing from the concept of the present invention, various modifications and variations can be made to the above specific embodiments, and various combinations of the technical features and structures proposed by the present invention can be made, without exceeding the protection scope of the present invention.
[0073] The scope of the present disclosure is not limited by the embodiments described above, but is defined by the appended claims and their equivalent scope.
Claims
1. A stator assembly (10) for an electric machine, comprising: A stator core (100), the stator core (100) being configured as a hollow cylinder, and a plurality of axially extending teeth (110) being provided on the peripheral wall of the stator core (100), with conductor slots (120) formed between adjacent teeth (110); A winding, the winding including conductors (200) arranged in the conductor slots (120); An insulator (300), the insulator surrounding the conductors (200) within the conductor slots (120); An end insulating plate (400), provided with an end plate (410) radially extending along the outer end face (130) of the axial end of the stator core (100) and a plurality of sleeve slots (420) axially extending from the end plate (410), and each sleeve slot (420) is inserted into a corresponding conductor slot (120) such that the conductor (200) extends through the corresponding sleeve slot (420).
2. The stator assembly (10) according to claim 1, wherein, Each of the sleeve slots (420) is located between the corresponding insulator (300) and the stator core (100) within the corresponding conductor slot (120).
3. The stator assembly (10) according to claim 1 or 2, wherein, The end insulating plate (400) is annular, and a flange (430) extending from the end plate (410) is provided on the radially inner side of the end insulating plate (400).
4. The stator assembly (10) according to claim 3, wherein, The flange (430) axially extends in a direction opposite to the extending direction of the sleeve slots (420).
5. The stator assembly (10) according to claim 1 or 2, wherein, The end insulating plate (400) further includes a plurality of separating ribs (440) extending outward from the end plate (410), and each separating rib (440) is provided at the joint between two adjacent sleeve slots (420).
6. The stator assembly (10) according to claim 5, wherein, The separating ribs (440) axially extend in a direction opposite to the extending direction of the sleeve slots (420).
7. The stator assembly (10) according to claim 1 or 2, wherein, The end insulating plate (400) is a single piece made of plastic.
8. The stator assembly (10) according to claim 1 or 2, wherein, The sleeve slots (420) of the end insulating plate (400) are elastically deformable.
9. The stator assembly (10) according to claim 1 or 2, wherein, The end plate (410) of the end insulating plate (400) covers at least a part or all of the outer end face (130) of the axial end of the stator core (100).
10. The stator assembly (10) according to claim 1 or 2, wherein, One end insulating plate (400) is provided at each axial end of the stator core (100).
11. The stator assembly (10) according to claim 1 or 2, wherein, The notch cross-section of the section of the conductor slot receiving the corresponding sleeve slot is larger than the notch cross-section of the remaining part of the conductor slot.
12. An electric machine, comprising the stator assembly (10) according to any one of claims 1 to 11.
13. An electric drive assembly system, comprising the stator assembly (10) according to any one of claims 1 to 11 or the electric machine according to claim 12.
14. A vehicle, comprising the stator assembly (10) according to any one of claims 1 to 11 or the electric machine according to claim 12 or the electric drive assembly system according to claim 13.