Stator assembly and motor
By designing multiple first and second core components in the stator assembly of the axial flux permanent magnet synchronous motor, the teeth are set in a one-to-one correspondence, which solves the problem of insufficient motor reliability and achieves higher assembly accuracy and cost-effectiveness.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- MIDEA GROUP CO LTD
- Filing Date
- 2025-12-24
- Publication Date
- 2026-05-01
AI Technical Summary
The reliability of existing axial flux permanent magnet synchronous motors is insufficient, which limits their application.
The stator assembly is composed of multiple first core components and second core components. Each first core component includes N circumferentially spaced first teeth, and each second core component includes M circumferentially spaced second teeth, where M>=N and N>=2. The teeth on the first core ring and the second core ring are arranged in a one-to-one correspondence. The assembly accuracy and reliability are improved by the design of rivet holes and V-grooves.
It improves the assembly accuracy and reliability of stator components, reduces assembly requirements, minimizes positional changes caused by thermal expansion and contraction, enhances the performance stability of the motor, and reduces mold development and production costs.
Smart Images
Figure CN121966049A_ABST
Abstract
Description
Stator assembly and motor Technical Field
[0001] This application relates to the field of motor technology, and in particular to a stator assembly and a motor. Background Technology
[0002] Permanent magnet synchronous motors (PMSMs) have advantages such as high efficiency, high power density, and high power factor, and have been widely used. Among them, the axial flux PMSM is a type of PMSM that has even higher power density and can be used in scenarios with high power density requirements. However, the reliability of existing axial flux PMSMs limits their application. Summary of the Invention
[0003] This application provides a stator assembly and a motor to improve the reliability of the motor.
[0004] To solve the above-mentioned technical problems, this application provides a stator assembly, which includes a plurality of first iron core members and a plurality of second iron core members. Each first iron core member includes N first teeth spaced apart along the circumference of the stator assembly; each second iron core member includes M second teeth spaced apart along the circumference, wherein M>=N, N>=2; wherein the plurality of first iron core members are arranged to form a first iron core ring along the circumference of the stator assembly, and the plurality of second iron core members are arranged to form a second iron core ring along the circumference, wherein the number of first teeth on the first iron core ring is the same as the number of second teeth on the second iron core ring, and the first teeth and second teeth are arranged one-to-one opposite each other along the axial direction of the stator assembly.
[0005] In one embodiment, the vertical distance between the rivet hole and the wall of the V-groove is greater than or equal to 2 mm.
[0006] In one embodiment, M=N, and the first core component and the second core component are connected in a one-to-one correspondence.
[0007] In one embodiment, the first core component and the second core component are connected in a staggered manner.
[0008] In one embodiment, the first core ring and the second core ring are detachably connected.
[0009] In one embodiment, the first tooth has a first positioning groove on one side in the axial direction, and the second tooth has a second positioning post on one side in the axial direction, the second positioning post being configured to be disposed in the first positioning groove.
[0010] In one embodiment, the first tooth is provided with a first positioning post on one side in the axial direction, and the second tooth is provided with a second positioning groove on one side in the axial direction, wherein the first positioning post is configured to be disposed in the second positioning groove.
[0011] In one embodiment, a plurality of first core components are integrally formed; or a plurality of second core components are integrally formed.
[0012] In one embodiment, the stator assembly further includes: a first pole shoe connected to the first core member and located on the side of the first core member facing away from the first tooth in the axial direction of the stator assembly; and a second pole shoe connected to the second core member and located on the side of the second core member facing away from the second tooth in the axial direction of the stator assembly.
[0013] In one embodiment, the first pole shoe is integrally formed with the first iron core component; the second pole shoe is integrally formed with the second iron core component.
[0014] In one embodiment, the first core component is a core made of a composite soft magnetic material; or the second core component is a core made of a composite soft magnetic material.
[0015] In one embodiment, adjacent first core members are spaced apart in the circumferential direction; or adjacent second core members are spaced apart in the circumferential direction.
[0016] To solve the above-mentioned technical problems, this application provides an electric motor, which includes: the stator assembly of any of the above-mentioned components.
[0017] The beneficial effects of this application are as follows: The stator assembly of this application includes a plurality of first iron core members and a plurality of second iron core members. Each first iron core member includes N first teeth spaced apart circumferentially. Each second iron core member includes M second teeth spaced apart circumferentially, wherein M>=N and N>=2. The plurality of first iron core members are arranged circumferentially to form a first iron core ring, and the plurality of second iron core members are arranged circumferentially to form a second iron core ring. The number of first teeth on the first iron core ring is the same as the number of second teeth on the second iron core ring, and the first teeth and the second teeth are arranged one-to-one opposite each other along the axial direction of the stator assembly. The first and second core components of this application both include two or more teeth. Compared to a stator core with only one tooth or an independent stator tooth, the stator assembly of this application only needs to ensure the positional accuracy of the first and second core components in the circumferential direction during assembly, without needing to consider the assembly accuracy between individual stator teeth. This reduces the external assembly requirements of the stator assembly, while improving the assembly accuracy of the stator assembly. Furthermore, the stator teeth are less prone to positional changes due to factors such as thermal expansion and contraction, which could affect the performance of the motor. Therefore, the stator assembly provided by this application can improve the reliability of the motor. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 is a structural schematic diagram of an embodiment of the stator assembly provided by this application; Figure 2 is an exploded view of the structure of the stator assembly in the embodiment of Figure 1; Figure 3 is a structural schematic diagram of another embodiment of the stator assembly provided by this application; Figure 4 is an exploded view of the structure of the stator assembly in the embodiment of Figure 3; Figure 5 is a structural schematic diagram of an embodiment of the first core ring / second core ring provided by this application; Figure 6 is a structural schematic diagram of an embodiment of the first core component / second core component provided by this application.
[0019] Reference numerals: 10 Stator assembly; 100 First core ring; 110 First core component; 111 First tooth; 112 First positioning post; 113 First positioning groove; 114 First pole shoe; 200 Second core ring; 210 Second core component; 211 Second tooth; 212 Second positioning post; 213 Second positioning groove; 214 Second pole shoe. Detailed Implementation
[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0021] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.
[0022] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.
[0023] This application provides a stator assembly 10, referring to Figures 1 to 6. The stator assembly 10 includes a plurality of first core members 110 and a plurality of second core members 210. Each of the plurality of first core members 110 includes N first teeth 111 spaced apart circumferentially along the stator assembly 10, that is, each first core member 110 includes N first teeth 111 spaced apart circumferentially along the stator assembly 10. Each second core member 210 includes M second teeth 211 spaced apart circumferentially, where M>=N and N>=2. In this configuration, a plurality of first core components 110 are arranged circumferentially around the stator assembly 10 to form a first core ring 100, and a plurality of second core components 210 are arranged circumferentially to form a second core ring 200. The number of first teeth 111 on the first core ring 100 and the number of second teeth 211 on the second core ring 200 are the same, and the first teeth 111 and the second teeth 211 are arranged opposite to each other along the axial direction of the stator assembly 10.
[0024] Each first core member 110 includes N first teeth 111 spaced circumferentially along the stator assembly 10. This means that each of the multiple first core members 110 provided in this application has N first teeth 111 spaced circumferentially along the stator assembly 10. The number N of the first teeth 111 on the first core member 110 is divisible by the number of stator teeth in the stator assembly 10, and the number is at least 2, but can also be 3, 4, 6, etc., without limitation. For example, when the number of stator teeth is 24, N can be 2, 3, 4, 6, 8, 12, etc. Each first tooth 111 and each second tooth 211 constitute a stator tooth. Multiple first core members 110 are arranged to form a first core ring 100, which is a ring structure coaxially arranged with the stator assembly 10.
[0025] Each second core member 210 includes M second teeth 211 spaced apart circumferentially. This means that each of the multiple second core members 210 provided in this application has M second teeth 211 spaced apart circumferentially along the stator assembly 10. The number M of the second teeth 211 on the second core member 210 is divisible by the number of stator teeth in the stator assembly 10, and the number is at least 2, but can also be 3, 4, 6, etc., without limitation. For example, when the number of stator teeth is 24, M can be 2, 3, 4, 6, 8, 12, etc. Multiple second core components 210 are arranged to form a second core ring 200, wherein the second core ring 200 is a ring structure coaxially arranged with the first core ring 100 and the stator assembly 10, and the inner and outer diameters of the first core ring 100 and the second core ring 200 are the same, or in other words, the first core ring 100 and the second core ring 200 are two ring structures of the same size.
[0026] In this configuration, the number of first teeth 111 on the first core ring 100 is the same as the number of second teeth 211 on the second core ring 200, and the first teeth 111 and second teeth 211 are arranged one-to-one opposite each other along the axial direction of the stator assembly 10. It can be understood that the first core ring 100 and the second core ring 200 are arranged along the axial direction of the stator assembly 10, and the first teeth 111 and second teeth 211 are arranged one-to-one to form stator teeth. When the number of first teeth 111 on the first core member 110 is the same as the number of second teeth 211 on the second core member 210, the number of multiple first core members 110 and multiple second core members 210 is the same, thus the number of teeth on the first core ring 100 and the second core ring 200 is the same, allowing them to be arranged one-to-one along the axial direction. Alternatively, when the number of first teeth 111 on the first core member 110 is different from the number of second teeth 211 on the second core member 210, the number of multiple first core members 110 and multiple second core members 210 is also different. Since the number of second teeth 211 on the second core member 210 is greater than the number of first teeth 111 on the first core member 110, the number of first core members 110 is greater than the number of second core members 210. This makes the number of teeth on the first core ring 100 and the second core ring 200 the same, allowing them to be arranged in a one-to-one correspondence along the axial direction. Each adjacent first tooth 111 and each adjacent second tooth 211 has a receiving groove (not shown in the figure), and the corresponding upper and lower receiving grooves constitute the space for accommodating the motor windings.
[0027] In this embodiment, the stator assembly 10 is formed by setting a plurality of first core members 110 to surround and form a first core ring 100, and setting a plurality of second core members 210 to surround and form a second core ring 200, so that the first core ring 100 and the second core ring 200 are arranged axially to form the main body of the stator assembly 10. The first core component 110 and the second core component 210 each include two or more teeth. Compared with a stator core with only one tooth or an independent stator tooth, the stator assembly 10 of this application only needs to ensure the positional accuracy of the first core component 110 and the second core component 210 in the circumferential direction during assembly, without needing to consider the assembly accuracy between individual stator teeth. This reduces the assembly requirements of the stator assembly 10, and the stator teeth are less likely to change position due to factors such as thermal expansion and contraction, thus affecting the performance of the motor. Therefore, the stator assembly 10 provided by this application can improve the reliability of the motor. In addition, when the number of the first teeth 111 and the second teeth 211 on the first core component 110 and the second core component 210 is the same, only one core component mold needs to be developed, which can reduce the mold development cost and thus reduce the cost of the stator assembly 10.
[0028] In one embodiment, to reduce costs, simplify the assembly requirements of the stator assembly 10, and improve the reliability of the motor, the first core ring 100 is integrally formed from multiple first core components 110. Understandably, during stator assembly 10 assembly, the first core ring 100 directly integrates multiple first core components 110 in the circumferential direction, eliminating the need to consider assembly precision between the multiple first core components 110. Instead, it is integrally formed using a mold, which reduces the assembly requirements of the stator assembly 10 and improves the reliability of the motor. Furthermore, it reduces the number of assembly steps for the first core ring 100, thereby increasing production speed and ultimately reducing costs.
[0029] In one embodiment, to reduce costs, simplify the assembly requirements of the stator assembly 10, and improve the reliability of the motor, the second core ring 200 is integrally formed from multiple second core components 210. Understandably, during stator assembly 10 assembly, the second core ring 200 directly integrates multiple second core components 210 in the circumferential direction, eliminating the need to consider assembly precision between the multiple second core components 210. Instead, it is integrally formed using a mold, which reduces the assembly requirements of the stator assembly 10 and improves the reliability of the motor. Furthermore, it reduces the number of assembly steps for the second core ring 200, thereby increasing production speed and ultimately reducing costs.
[0030] In one embodiment, the first core ring 100 is integrally formed from a plurality of first core components 110, and the second core ring 200 is integrally formed from a plurality of second core components 210. Furthermore, when the structures of the first core components 110 and the second core components 210 are identical, the same mold can be used, reducing costs and improving the consistency of the stator assembly 10, thereby enhancing the reliability of the motor.
[0031] In one embodiment, M=N, and the first core member 110 and the second core member 210 are connected one-to-one in the axial direction. It can be understood that the first core member 110 and the second core member 210 in this embodiment have the same number of first teeth 111 and second teeth 211. That is, the structures of the first core member 110 and the second core member 210 in this embodiment can be completely identical, requiring only one mold, thus reducing costs.
[0032] In one embodiment, the first core member 110 and the second core member 210 are connected in a staggered manner in the circumferential direction. This staggered connection can involve the first core member 110 being connected to two second core members 210, or one second core member 210 being connected to two or more first core members 110. For example, when the first core member 110 has two first teeth 111 and the second core member 210 has two second teeth 211, the two first teeth 111 on the same first core member 110 are respectively connected to the two second teeth 211 on two adjacent second core members 210. Similarly, when the first core member 110 has two first teeth 111 and the second core member 210 has three second teeth 211, the three second teeth 211 on the same second core member 210 are respectively connected to the three first teeth 111 on two adjacent first core members 110.
[0033] In this embodiment, the first core component 110 and the second core component 210 are connected in a staggered manner, which enables the first core component 110 and the second core component 210 to be connected simultaneously in the axial and circumferential directions. This improves the assembly accuracy of the first core ring 100 and the second core ring 200, thereby improving the assembly accuracy of the stator assembly 10 and thus improving the reliability of the motor.
[0034] In one embodiment, adjacent first core members 110 are spaced apart in the circumferential direction. Alternatively, adjacent second core members 210 are spaced apart in the circumferential direction. Or, both adjacent first core members 110 and adjacent second core members 210 are spaced apart in the circumferential direction.
[0035] In one embodiment, the first core ring 100 and the second core ring 200 are detachably connected to facilitate subsequent maintenance operations such as repair, care, and replacement of the stator assembly 10. The detachable connection between the second core ring 200 and the first core ring 100 can be achieved through a first core component 110 and a second core component 210, or through an additional detachable structure; no limitation is imposed here.
[0036] In one embodiment, to ensure the assembly accuracy between the first core component 110 and the second core component 210, the first tooth 111 is provided with a first positioning groove 113 on one side of the axial direction, and the second tooth 211 is provided with a second positioning post 212 on one side of the axial direction. The second positioning post 212 is configured to be located within the first positioning groove 113. This embodiment, by providing the first positioning groove 113 in the first tooth 111 and the second positioning post 212 in the second tooth 211, with the second positioning post 212 located within the first positioning groove 113, enables a detachable connection between the first core component 110 and the second core component 210, thereby achieving a detachable connection between the first core ring 100 and the second core ring 200. Furthermore, it prevents circumferential displacement of the first core component 110 and the second core component 210, ensuring the fitting accuracy of the stator assembly 10 during motor operation. Moreover, the above assembly method is simple and easy to operate, reduces additional parts, and lowers costs.
[0037] In one embodiment, to further improve the assembly accuracy between the first core ring 100 and the second core ring 200, the first tooth 111 is provided with a first positioning post 112 on one side in the axial direction, and the second tooth 211 is provided with a second positioning groove 213 on one side in the axial direction. The first positioning post 112 is configured to be located within the second positioning groove 213. Understandably, in this embodiment, the first tooth 111 is provided with a first positioning post 112 and a first positioning groove 113, and the second tooth 211 is provided with a second positioning post 212 and a second positioning groove 213. The first positioning post 112 is located within the second positioning groove 213, and the second positioning post 212 is located within the second positioning groove 213. This method can further prevent the first core member 110 and the second core member 210 from shifting in the circumferential direction, ensuring the fitting accuracy of the stator assembly 10 during motor operation and enhancing the reliability of the motor. The first positioning post 112 and the first positioning groove 113 can be arranged circumferentially, and correspondingly, the second positioning groove 213 and the second positioning post 212 can be arranged circumferentially; or the first positioning post 112 and the first positioning groove 113 can be arranged radially along the stator assembly 10, and correspondingly, the second positioning groove 213 and the second positioning post 212 can be arranged radially, which is not limited here.
[0038] In other embodiments, the first core member 110 may be provided with multiple sets of first positioning posts 112 and first positioning grooves 113, and the second core member 210 may be provided with multiple sets of second positioning posts 212 and second positioning grooves 213, so as to further improve the assembly accuracy between the first core ring 100 and the second core ring 200.
[0039] In one embodiment, the stator assembly 10 further includes a first pole shoe 114 and a second pole shoe 214. The first pole shoe 114 is connected to the first core member 110 and is located on the side of the first core member 110 facing away from the first tooth portion 111 in the axial direction of the stator assembly 10. The second pole shoe 214 is connected to the second core member 210 and is located on the side of the second core member 210 facing away from the second tooth portion 211 in the axial direction of the stator assembly 10.
[0040] In this embodiment, the stator assembly 10 has a first pole shoe 114 and a second pole shoe 214 at both ends in the axial direction. The first pole shoe 114 and the second pole shoe 214 can "guide" and "diffuse" the magnetic field of the main magnetic pole into the air gap, making the magnetic field distribution in the air gap more uniform and closer to a sine wave, thereby reducing electromagnetic losses and vibration noise during motor operation. In addition, the first pole shoe 114 and the second pole shoe 214 are located on the outer side of the first tooth 111 and the second tooth 211 in the axial direction, which can provide a stable installation space and support structure for the winding, preventing the winding from shifting or being damaged during motor operation.
[0041] In one embodiment, the first pole shoe 114 and the first core component 110 are integrally formed. This integral forming of the first pole shoe 114 and the first core component 110 reduces the number of assembly steps in the stator assembly 10, increases processing speed, and thus reduces costs.
[0042] In one embodiment, the second pole shoe 214 and the second core component 210 are integrally formed. This integral forming of the second pole shoe 214 and the second core component 210 reduces the number of assembly steps in the stator assembly 10, increases processing speed, and thus reduces costs.
[0043] In one embodiment, the first pole shoe 114 and the first iron core 110, and the second pole shoe 214 and the second iron core 210 are integrally formed, which can reduce the assembly steps of the stator assembly 10, increase the processing speed, and thus reduce costs.
[0044] In one embodiment, the first core component 110 is a core made of soft magnetic composite (SMC). Alternatively, the second core component 210 is a core made of soft magnetic composite. Or, both the first core component 110 and the second core component 210 are cores made of soft magnetic composite. SMC is composed of high-purity iron powder or alloy powder, such as iron-phosphorus alloy or iron-silicon alloy. The surface of these magnetic particles is coated with a thin layer of insulating material (such as phosphate or resin) to form an insulating layer, providing good electrical insulation between the particles and reducing eddy current losses. Core components made of soft magnetic composite have lower losses and higher permeability. For the same volume, motors with SMC cores can achieve higher power density and support higher speed motors, such as those exceeding 20,000 rpm. The core made of soft magnetic composite can be pure iron SMC, iron-phosphorus alloy SMC, iron-silicon alloy SMC, iron-cobalt alloy SMC, iron-nickel alloy SMC, etc., and is not limited thereto. Depending on the application scenario, a core made of composite soft magnetic material can be selected.
[0045] This application provides an electric motor (not shown in the figure), the motor 30 including a stator assembly 10 and a rotor assembly (not shown in the figure). The stator assembly 10 can be any one of the stator assembly 10 embodiments described above, and is not limited herein. The motor provided in this application includes a stator assembly 10 comprising a plurality of first core members 110 and a plurality of second core members 210. Each first core member 110 includes N first teeth 111 spaced apart circumferentially. Each second core member 210 includes M second teeth 211 spaced apart circumferentially, wherein M>=N and N>=2. The plurality of first core members 110 are arranged circumferentially around the stator assembly 10 to form a first core ring 100, and the plurality of second core members 210 are arranged circumferentially to form a second core ring 200. The number of first teeth 111 on the first core ring 100 and the number of second teeth 211 on the second core ring 200 are the same, and the first teeth 111 and the second teeth 211 are arranged opposite each other along the axial direction of the stator assembly 10. The first core component 110 and the second core component 210 each include two or more teeth. Compared with a stator core with only one tooth or an independent stator tooth, the stator assembly 10 of this application only needs to ensure the positional accuracy of the first core component 110 and the second core component 210 in the circumferential direction during assembly, without having to consider the assembly accuracy between individual stator teeth. This reduces the external assembly requirements of the stator assembly 10, while improving the assembly accuracy of the stator assembly 10. Furthermore, the stator teeth are less likely to change position due to factors such as thermal expansion and contraction, thus affecting the performance of the motor. Therefore, the stator assembly 10 provided by this application can improve the reliability of the motor.
[0046] The above are merely embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.
Claims
1. A stator assembly, characterized in that, The stator assembly includes: a plurality of first core members (110), each first core member (110) including N first teeth (111) spaced apart circumferentially along the stator assembly; a plurality of second core members (210), each second core member (210) including M second teeth (211) spaced apart circumferentially along the stator assembly, wherein M>=N, N>=2; wherein the plurality of first core members (110) are arranged to form a first core ring (100) circumferentially around the stator assembly, and the plurality of second core members (210) are arranged to form a second core ring (200) circumferentially around the stator assembly, wherein the number of first teeth (111) on the first core ring (100) is the same as the number of second teeth (211) on the second core ring (200), and the first teeth (111) and the second teeth (211) are arranged opposite to each other along the axial direction of the stator assembly.
2. The stator assembly according to claim 1, characterized in that, M=N, and the first iron core (110) and the second iron core (210) are connected in a one-to-one correspondence.
3. The stator assembly according to claim 1, characterized in that, The first iron core component (110) and the second iron core component (210) are connected in a staggered manner.
4. The stator assembly according to any one of claims 1-3, characterized in that, The first iron core ring (100) and the second iron core ring (200) are detachably connected.
5. The stator assembly according to claim 4, characterized in that, The first tooth (111) has a first positioning groove (113) on one side of the axial direction, and the second tooth (211) has a second positioning post (212) on one side of the axial direction, and the second positioning post (212) is configured to be located in the first positioning groove (113).
6. The stator assembly according to claim 5, characterized in that, The first tooth (111) is provided with a first positioning post (112) on one side of the axial direction, and the second tooth (211) is provided with a second positioning groove (213) on one side of the axial direction, and the first positioning post (112) is configured to be located in the second positioning groove (213).
7. The stator assembly according to claim 1, characterized in that, The plurality of first core components (110) are integrally formed; or the plurality of second core components (210) are integrally formed.
8. The stator assembly according to claim 1, characterized in that, The stator assembly further includes: a first pole shoe (114), connected to the first core member (110), and located on the side of the first core member (110) facing away from the first tooth (111) in the axial direction of the stator assembly; and a second pole shoe (214), connected to the second core member (210), and located on the side of the second core member (210) facing away from the second tooth (211) in the axial direction of the stator assembly.
9. The stator assembly according to claim 8, characterized in that, The first pole shoe (114) is integrally formed with the first iron core (110); the second pole shoe (214) is integrally formed with the second iron core (210).
10. The stator assembly according to claim 1, characterized in that, The first core component (110) is a core made of composite soft magnetic material; or the second core component (210) is a core made of composite soft magnetic material.
11. The stator assembly according to claim 2 or 3, characterized in that, The adjacent first core members (110) are spaced apart in the circumferential direction; or the adjacent second core members (210) are spaced apart in the circumferential direction.
12. An electric motor, characterized in that, The motor includes: the stator assembly as described in any one of claims 1-11.