Stator assembly of linear motor, linear motor, suspension apparatus, and vehicle

Abstract

A stator assembly (400) of a linear motor, a linear motor, a suspension apparatus (500), and a vehicle. The stator assembly (400) comprises multiple layers of stator cores (200), the multiple layers of stator cores (200) being sequentially stacked along the axial direction of the stator assembly (400); each stator core (200) comprises a stator body (204) and tooth crown structures (30), wherein the tooth crown structures (30) are disposed on the outer peripheral wall of the stator body (204), and the tooth crown structures (30) and the stator body (204) jointly define a recess structure (206) used for mounting a winding coil (300).

Description

Stator assembly of linear motor, linear motor, suspension device, and vehicle

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application with application number 202311872132.9 and application date December 29, 2023, and claims the priority of the above-mentioned Chinese patent application. The entire content of the above-mentioned Chinese patent application is hereby introduced into this application as a reference. Technical Field

[0003] The present application relates to the field of motor technology, and in particular to a stator assembly of a linear motor, a linear motor, a suspension device, and a vehicle. Background Art

[0004] In related art, because a linear motor's stator assembly consists of multiple stator cores stacked together, two stator cores are inevitably located at the ends, generating end stress. Furthermore, winding slots are formed on the stator core surface, generating cogging forces. These end stresses and cogging forces are collectively known as magnetic drag. This magnetic drag is a significant factor in the periodic fluctuations in thrust of a linear motor, a major bottleneck restricting its application and affecting its performance. Summary of the Invention

[0005] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present application is to propose a stator assembly for a linear motor, which, by virtue of a tooth crown structure disposed on the outer peripheral wall of the stator body, can reduce magnetic drag and thus reduce thrust fluctuations of the linear motor, thereby improving the operating performance of the linear motor.

[0006] The present application further proposes a linear motor.

[0007] The present application further proposes a suspension device.

[0008] The present application further proposes a vehicle.

[0009] The stator assembly of the linear motor according to the present application includes:

[0010] A multi-layer stator core is stacked in sequence along the axial direction of the stator assembly. The stator core includes a stator body and a crown structure. The crown structure is arranged on the outer peripheral wall of the stator body. The crown structure and the stator body jointly define a slot structure for installing a winding coil.

[0011] According to the stator assembly of the linear motor of the present application, the tooth crown structure is provided on the outer peripheral wall of the stator body, which can reduce the magnetic resistance and the thrust fluctuation of the linear motor, thereby improving the working performance of the linear motor.

[0012] The linear motor according to the present application includes the above-mentioned stator assembly.

[0013] According to the linear motor of the present application, the tooth crown structure is provided on the outer peripheral wall of the stator body, which can reduce the magnetic resistance and the thrust fluctuation of the linear motor, thereby improving the working performance of the linear motor.

[0014] The suspension device according to the present application includes the above-mentioned linear motor.

[0015] According to the suspension device of the present application, the linear motor is arranged in the suspension device, which can reduce the magnetic resistance and the thrust fluctuation of the linear motor, thereby improving the working performance of the linear motor and further improving the working performance of the suspension device.

[0016] The vehicle according to the present application includes the above-mentioned linear motor.

[0017] The vehicle according to the present application includes a suspension device, which can improve the performance of the vehicle.

[0018] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a schematic diagram of a suspension device according to an embodiment of the present application;

[0020] FIG2 is a schematic diagram of the assembly of a stator assembly, a stator insulation frame, and a winding coil according to an embodiment of the present application;

[0021] 3 is a schematic diagram of the assembly of the middle stator core, the stator insulation frame and the winding coil according to an embodiment of the present application;

[0022] FIG4 is a schematic diagram of an end stator core according to an embodiment of the present application;

[0023] FIG5 is a schematic diagram of another end stator core according to an embodiment of the present application;

[0024] FIG6 is a schematic diagram of stacking multiple middle stator cores according to an embodiment of the present application;

[0025] FIG7 is a front view of a plurality of stator bodies stacked according to an embodiment of the present application;

[0026] FIG8 is a schematic diagram of the structure of a tooth crown according to an embodiment of the present application. DETAILED DESCRIPTION

[0027] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0028] The following describes a stator assembly 400 of a linear motor according to an embodiment of the present application with reference to Figures 1-8. The linear motor can be a cylindrical three-phase permanent magnet synchronous linear motor, comprising a stator core 200, a stator insulation frame 100, and winding coils 300. The stator insulation frame 100 is mounted on the stator core 200 of the linear motor, and the winding coils 300 of the linear motor are disposed on the stator insulation frame 100. The stator insulation frame 100 and the stator core 200 are assembled in a stacked manner. When the stator insulation frame 100 and the stator core 200 are assembled, the stator insulation frame 100 and the stator core 200 are stacked.

[0029] As shown in Figure 2, the stator assembly 400 of the linear motor according to an embodiment of the present application includes: a multi-layer stator core 200, which is stacked in sequence along the axial direction of the stator assembly 400, and the stator core 200 includes a stator body 204 and a tooth crown structure 30. The tooth crown structure 30 is arranged on the outer peripheral wall of the stator body 204. The tooth crown structure 30 and the stator body 204 jointly define a slot structure 206 for installing the winding coil 300.

[0030] The stator core 200 is the central stator core 40 of the stator assembly 400. When the stator assembly 400 is placed in the orientation shown in FIG2 , the axial direction of the stator assembly 400 is the Z direction shown in FIG2 . The multi-layer stator core 200 is stacked in sequence along the axial direction of the stator assembly 400. Each stator core 200 includes a stator body 204 and a tooth crown structure 30. The tooth crown structure 30 is provided on the outer peripheral wall of the stator body 204. In some embodiments, the tooth crown structure 30 and the stator body 204 are bonded or snap-connected, but the present application is not limited thereto. The tooth crown structure 30 and the stator body 204 may also be connected by other means as long as the tooth crown structure 30 and the stator body 204 can be fixed. The crown structure 30 and the stator body 204 together define a slot structure 206 for installing the winding coil 300. Specifically, the winding coil 300 is arranged on the stator insulation frame 100, and the stator insulation frame 100 is installed on the slot structure 206. The winding coil 300 is installed in the slot structure 206 through the stator insulation frame 100.

[0031] Along the axial direction of the stator assembly, since the number of stator cores of the linear motor cannot be continuous, there must be two stator cores located at the end, which will generate end stress. At the same time, the slotted structure on the surface of the stator core (i.e., the middle stator core) and the end stator core will generate cogging force. The end stress and cogging force are collectively called magnetic resistance. Magnetic resistance is an important factor causing periodic fluctuations in the thrust of the linear motor and is the main bottleneck restricting its application, especially in motion control and high-precision applications.

[0032] In the present application, by arranging the crown structure 30 of the stator core 200 on the outer peripheral wall of the stator body 204, the magnetic resistance can be reduced, the negative impact of thrust fluctuation on the linear motor can be reduced, and the thrust fluctuation of the linear motor can be reduced, thereby improving the working performance of the linear motor.

[0033] Therefore, by disposing the crown structure 30 of the stator core 200 on the outer peripheral wall of the stator body 204 , the magnetic resistance can be reduced, and the thrust fluctuation of the linear motor can be reduced, thereby improving the working performance of the linear motor.

[0034] In some embodiments of the present application, as shown in FIG. 2 and FIG. 3 , the stator bodies 204 of the plurality of stator cores 200 are an integral piece, and the stator bodies 204 and the tooth crown structure 30 are detachably connected.

[0035] The stator body 204 of the stator core 200 and the tooth crown structure 30 can be fixedly connected by a snap-fit ​​connection, or can be fixedly connected by bolts, but the present application is not limited thereto. As long as the stator body 204 of the stator core 200 and the tooth crown structure 30 are detachably connected, the stator core 200 can be located between the two end stator cores 50 along the axial direction of the stator assembly 400. To address winding issues, the stator body 204 and the crown structure 30 of the central stator core 40 are detachably connected. After the winding coils 300 are wound and assembled on the corresponding stator insulation frame 100, and the stator insulation frame 100 is installed on the stator body 204 of the corresponding stator core 200, the stator insulation frame 100 can be injection molded within the slot structure 206 of the stator core 200, and the crown structure 30 can be assembled on the corresponding stator body 204, completing the assembly of the stator core 200, the stator insulation frame 100, and the winding coils 300. The detachable connection between the stator body 204 and the crown structure 30 of the stator core 200 facilitates the winding of the winding coils 300 on the corresponding stator insulation frame 100, thereby improving the production efficiency of the stator assembly 400 and the linear motor.

[0036] In some embodiments of the present application, as shown in FIG2 and FIG3 , the crown structure 30 and the stator body 204 jointly define two slot structures 206. Along the axial direction of the stator assembly 400, the two slot structures 206 are respectively located on either side of the stator core 200. Specifically, the crown structure 30 and the stator body 204 of the stator core 200 jointly define two slot structures 206. Along the axial direction of the stator assembly 400, one slot structure 206 is located on one side of the stator core 200, and the other slot structure 206 is located on the other side of the stator core 200. A stator insulation frame 100 can be disposed within each of the slot structures 206 of the stator core 200, thereby allowing winding coils 300 to be disposed within each of the slot structures 206 of the stator core 200. Multiple layers of winding coils 300 can be installed on the same stator core 200, thereby improving the space utilization of the stator assembly 400 and the slot fill rate of the stator assembly 400.

[0037] In some embodiments of the present application, as shown in Figures 6 to 8, the crown structure 30 includes a connected crown body 301 and a mounting boss 302. The mounting boss 302 is located on the surface of the crown body 301 facing the stator body 204. The outer peripheral wall of the stator body 204 has a mounting groove 205. The mounting boss 302 is assembled in the mounting groove 205. The crown body 301 and the stator body 204 jointly define a slot structure 206.

[0038] The crown structure 30 can be arc-shaped. As an example, the crown structure 30 can be circular arc-shaped, and the central angle of the crown structure 30 can be 60°. The crown structure 30 is arranged around the stator body 204 along the circumference of the corresponding stator body 204. The crown structure 30 includes a connected crown body 301 and a mounting boss 302. The crown body 301 and the mounting boss 302 can be integrally formed or snap-connected. In the radial direction of the stator core 200, the mounting boss 302 is located on the surface of the crown body 301 facing the stator body 204. The outer peripheral wall of the stator body 204 has a mounting groove 205. The mounting groove 205 is open toward the end of the crown structure 30 in the radial direction of the stator core 200. The mounting boss 302 is assembled into the mounting groove 205 from the open end of the mounting groove 205 so that the mounting boss 302 and the mounting groove 205 are nested and fitted. The mounting boss 302 can be embedded in the mounting groove 205 , thereby fixing the crown structure 30 to the stator body 204 .

[0039] In some embodiments of the present application, the surface of the tooth crown body 301 facing the stator body 204 abuts against the outer peripheral wall of the stator body 204. In the radial direction of the stator core 200, the surface of the tooth crown body 301 facing the stator body 204 contacts the outer peripheral wall of the stator body 204, which allows the tooth crown structure 30 and the corresponding stator body 204 to be assembled compactly, thereby reducing the volume of the stator core 200 and, consequently, the stator assembly 400.

[0040] In some embodiments of the present application, as shown in Figures 6 to 8, the crown body 301 includes: a first body 303 and a second body 304, the first body 303 is connected between the mounting boss 302 and the second body 304, and along the axial direction of the stator assembly 400, both sides of the second body 304 protrude from the first body 303.

[0041] As shown in Figures 2 and 8 , the first body 303 is located between the mounting boss 302 and the second body 304. The mounting boss 302, the first body 303, and the second body 304 can be integrally formed. Along the axial direction of the stator assembly 400, both sides of the second body 304 protrude from the first body 303. When the crown structure 30 is mounted on the stator body 204, the protrusion of the first body 303 from both sides of the second body 304 allows the crown structure 30 and the stator body 204 to jointly define two slot structures 206, thereby ensuring a reasonable structural design for the crown structure 30.

[0042] In some embodiments of the present application, as shown in FIG. 6 to FIG. 8 , along the axial direction of the stator assembly 400 , the first body 303 is located in the middle of the second body 304 .

[0043] In which, along the axial direction of the stator assembly 400, the first body 303 is assembled in the middle position of the second body 304. As an example, the first body 303 is assembled in the middle position of the second body 304 along the axial direction of the stator assembly 400. When the crown structure 30 is installed on the stator body 204, such a configuration is conducive to forming a slot structure 206 of the same structural shape on both sides of the stator core 200, thereby improving the structural consistency of the stator core 200.

[0044] In some embodiments of the present application, as shown in FIG. 2 , FIG. 4 and FIG. 5 , the end stator core 50 may also include a stator body 204 and a tooth crown structure 30 , and the stator body 204 and the tooth crown structure 30 are integrally formed.

[0045] Among them, along the axial direction of the stator assembly 400, multiple stator cores 200 are located between the two end stator cores 50, and along the axial direction of the stator assembly 400, the two end stator cores 50 are respectively located at the two ends of the stator core 200. The two end stator cores 50 are respectively the end end core and the starting end core. Since the thickness of the end end core and the starting end core is relatively thin, the end end core and the starting end core are made into a unit module. The end end core and the starting end core are an integral module, that is, the stator body 204 and the tooth crown structure 30 of the end stator core 50 are integrally formed.

[0046] It should be noted that, along the axial direction of the stator assembly 400, a slot structure 206 is formed on the surface of the end stator core 50 facing the middle stator core 40 (i.e., the stator core 200), forming a slot structure 206 within the end stator core 50. When assembling the end stator core 50, the stator insulation frame 100, and the winding coil 300, the stator insulation frame 100 is first assembled to the end stator core 50, and then the winding coil 300 is assembled to the stator insulation frame 100. The integral formation of the stator body 204 and the tooth crown structure 30 of the end stator core 50 enhances the structural strength of the end stator core 50.

[0047] Furthermore, the structures of the two end stator cores 50 can be the same or substantially the same, and the structures of the multiple middle stator cores 40 are the same. This helps to reduce the manufacturing difficulty of the stator assembly 400 and improve the production efficiency of the stator assembly 400.

[0048] In some embodiments of the present application, as shown in Figures 2, 4, and 5, the crown structure 30 of the end stator core 50 and the stator body 204 jointly define a slot structure 206. Along the axial direction of the stator assembly 400, the slot structure 206 is located on the end stator core 50 facing the adjacent middle stator core 40. Because the winding coil 300 is provided on a single side of the end stator core 50, the crown structure 30 of the end stator core 50 and the stator body 204 jointly define a slot structure 206, which can meet the use requirements of the end stator core 50, simplify the manufacturing difficulty of the end stator core 50, and also help improve the structural strength of the end stator core 50.

[0049] In some embodiments of the present application, in the radial direction of the stator core 200, the axial dimension of the outer peripheral wall of at least a portion of the crown structure 30 gradually decreases from the inside to the outside. Specifically, in the radial direction of the stator core 200, the outer side wall of the second body 304 facing away from the first body 303 constitutes the outer peripheral wall of the crown structure 30. In the radial direction of the stator core 200, the longitudinal cross-sectional dimension of the outer peripheral wall of at least a portion of the crown structure 30 gradually decreases from the inside to the outside. This can further reduce the magnetic drag force and the negative impact of thrust fluctuations on the linear motor, further reducing the thrust fluctuations of the linear motor, thereby further improving the operating performance of the linear motor. Furthermore, it can reduce the weight of the stator core 200, which is conducive to the lightweight design of the stator assembly 400.

[0050] In some embodiments of the present application, as shown in Figures 4, 5, 6 and 8, the outer peripheral wall of the crown structure 30 has a notch structure 305. It should be noted that the outer peripheral wall of the crown structure 30 of the middle stator core 40 is provided with a notch structure 305, and the outer peripheral wall of the crown structure 30 of the end stator core 50 may also be provided with a notch structure 305. The present application is described by taking the outer peripheral wall of the crown structure 30 of the stator core 200 and the outer peripheral wall of the crown structure 30 of the end stator core 50 as an example. By providing the notch structure 305, the magnetic resistance can be further reduced, the negative impact of the thrust fluctuation on the linear motor can be further reduced, the thrust fluctuation of the linear motor can be further reduced, thereby further improving the working performance of the linear motor, and the weight of the stator core 200 can also be reduced, which is beneficial to the lightweight design of the stator assembly 400.

[0051] In some embodiments of the present application, as shown in FIG. 4 , FIG. 5 , FIG. 6 and FIG. 8 , there may be a plurality of cutout structures 305 , and the plurality of cutout structures 305 are arranged along the axial direction of the stator assembly 400 .

[0052] Among them, the outer peripheral wall of the tooth crown structure 30 of each stator core 200 can be provided with multiple notch structures 305, and the multiple notch structures 305 of each stator core 200 are arranged in sequence along the axial direction of the stator assembly 400. By providing multiple notch structures 305 on each stator core 200, the magnetic resistance can be further reduced, and the negative impact of thrust fluctuations on the linear motor can be further reduced. The thrust fluctuations of the linear motor can be further reduced, thereby further improving the working performance of the linear motor, and the weight of the stator core 200 can also be further reduced, which is more conducive to the lightweight design of the stator assembly 400.

[0053] In some embodiments of the present application, as shown in FIG. 4 , FIG. 5 , FIG. 6 and FIG. 8 , there are two cutout structures 305 , and along the axial direction of the stator assembly 400 , the two cutout structures 305 are respectively arranged close to the edge of the crown structure 30 .

[0054] Among them, two notch structures 305 are provided on the outer peripheral wall of the crown structure 30 of each stator core 200. Along the axial direction of the stator assembly 400, the two notch structures 305 are respectively arranged close to the edge of the corresponding crown structure 30. By arranging the two notch structures 305 of the crown structure 30 of the stator core 200 close to the edge of the corresponding crown structure 30 along the axial direction of the stator assembly 400, the two notch structures 305 can be symmetrically arranged on the corresponding crown structure 30, so that the magnetic resistance forces at different positions of the stator assembly 400 can be the same or approximately the same, thereby improving the force uniformity of the stator assembly 400.

[0055] In some embodiments of the present application, there are a plurality of tooth crown structures 30 , and the plurality of tooth crown structures 30 are arranged around the stator body 204 along the circumference of the stator body 204 .

[0056] Each stator core 200 has a plurality of tooth crown structures 30. Each stator core 200 may have two, three, four, five, six, or other number of tooth crown structures 30. This application uses an example in which each stator core 200 has six tooth crown structures 30. The plurality of tooth crown structures 30 are arranged circumferentially around the stator body 204. This arrangement can further reduce magnetic drag and the negative impact of thrust fluctuations on the linear motor, further reducing thrust fluctuations in the linear motor, thereby further improving the operating performance of the linear motor. Furthermore, the weight of the stator core 200 can be further reduced, further facilitating a lightweight design of the stator assembly 400.

[0057] In some embodiments of the present application, along the circumferential direction of the stator body 204, a plurality of crown structures 30 are arranged around the stator body 204 along the circumference of the corresponding stator body 204, and at least two adjacent crown structures 30 are spaced apart to form an assembly space 201 between the two adjacent crown structures 30. As an example, two adjacent crown structures 30 are spaced apart, and along the circumferential direction of the stator body 204, the interval between every two crown structures 30 is the same angle, and an assembly space 201 is formed between any two adjacent crown structures 30. The assembly space 201 is used for the output and connection of wires between the winding coils 300. After the multi-layer stator core 200 is stacked in sequence along the axial direction of the stator assembly 400, the assembly spaces 201 of the multiple stator cores 200 are arranged one by one along the axial direction of the stator assembly 400. The assembly space 201 reserves space for wiring between the winding coils 300, connecting to an external power supply, and outputting coil wires, thereby facilitating the wiring and routing of the winding coils 300 on the stator assembly 400.

[0058] Furthermore, considering the output and connection of the winding coil 300, six assembly spaces 201 are formed in the circumferential direction of the end end core and the starting end core, and then the end end core and the starting end core are superimposed on the stator core 200 along the axial direction of the stator assembly 400, thereby completing the production of the entire stator assembly 400.

[0059] In some embodiments of the present application, the stator body 204 and the crown structure 30 of the stator core 200 are detachably connected, and the stator body 204 and the crown structure 30 of the stator core 200 are split structures, which facilitates winding the winding coil 300 on the stator insulation frame 100 on the stator core 200.

[0060] The stator body 204 and the tooth crown structure 30 of the end stator core 50 are integrally formed. For insulation considerations, the stator insulation frame 100 is injection-molded in the slot structure 206 of the end stator core 50. This can reduce the number of components constituting the stator assembly 400 and simplify the structure of the stator assembly 400.

[0061] In some embodiments of the present application, under the same size boundary or volume, the thrust of the three-phase cylindrical permanent magnet synchronous linear motor is greater than that of the single-phase cylindrical permanent magnet synchronous linear motor, so the present application adopts a cylindrical three-phase permanent magnet synchronous linear motor.

[0062] It should be noted that the stator assembly 400 of the present application not only effectively minimizes the adverse effects of thrust fluctuations but also resolves the winding difficulties associated with the tooth crown structure 30, significantly improving the performance of the linear motor. Furthermore, the stator assembly 400 of the present application is practical and easy to implement, facilitating mass production and practical applications.

[0063] In some embodiments of the present application, an insulating member is provided between two adjacent stator cores 200. The insulating member may be insulating paper, insulating sheet, etc. The present application uses insulating paper as an example for explanation. The insulating member may separate the two adjacent stator cores 200 to achieve an insulation effect between the two adjacent stator cores 200.

[0064] The linear motor according to the embodiment of the present application includes the stator assembly 400 of the above embodiment. The tooth crown structure 30 is provided on the outer peripheral wall of the stator body 204, which can reduce magnetic resistance and thrust fluctuation of the linear motor, thereby improving the working performance of the linear motor.

[0065] As shown in Figure 1, the suspension device 500 according to an embodiment of the present application includes the linear motor of the above embodiment. The linear motor is arranged in the suspension device 500, which can reduce the magnetic resistance and the thrust fluctuation of the linear motor, thereby improving the working performance of the linear motor and further improving the working performance of the suspension device 500.

[0066] The vehicle according to the embodiment of the present application includes the suspension device 500 of the above embodiment, which can improve the performance of the vehicle.

[0067] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0068] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A stator assembly (400) of a linear motor, wherein, Comprising: A multi-layer stator core (200), with multiple layers of the stator core (200) stacked in sequence along the axial direction of the stator assembly (400). Each stator core (200) includes a stator body (204) and a tooth crown structure (30). The tooth crown structure (30) is provided on the outer peripheral wall of the stator body (204), and the tooth crown structure (30) and the stator body (204) jointly define a slot structure (206) for installing a winding coil (300).

2. The stator assembly (400) of the linear motor according to claim 1, wherein, The stator bodies (204) of multiple stator cores (200) are an integral part, and the stator body (204) and the tooth crown structure (30) are detachably connected.

3. The stator assembly (400) of the linear motor according to claim 1 or 2, wherein, The tooth crown structure (30) and the stator body (204) jointly define two slot structures (206). Along the axial direction of the stator assembly (400), the two slot structures (206) are respectively located on both sides of the stator core (200).

4. The stator assembly (400) of the linear motor according to any one of claims 1-3, wherein, The tooth crown structure (30) includes a connected tooth crown main body (301) and a mounting boss (302). The mounting boss (302) is located on the surface of the tooth crown main body (301) facing the stator body (204). The outer peripheral wall of the stator body (204) has a mounting groove (205), and the mounting boss (302) is assembled in the mounting groove (205). The tooth crown main body (301) and the stator body (204) jointly define the slot structure (206).

5. The stator assembly (400) of the linear motor according to claim 4, wherein, The surface of the tooth crown main body (301) facing the stator body (204) abuts against the outer peripheral wall of the stator body (204).

6. The stator assembly (400) of the linear motor according to claim 4 or 5, wherein, The tooth crown main body (301) includes: a first main body (303) and a second main body (304). The first main body (303) is connected between the mounting boss (302) and the second main body (304). Along the axial direction of the stator assembly (400), both sides of the second main body (304) protrude from the first main body (303).

7. The stator assembly (400) of the linear motor according to claim 6, wherein, Along the axial direction of the stator assembly (400), the first main body (303) is located in the middle of the second main body (304).

8. The stator assembly (400) of the linear motor according to any one of claims 1-7, wherein, In the radial direction of the stator core (200), the axial dimension of at least part of the outer peripheral wall of the tooth crown structure (30) gradually decreases from the inside to the outside.

9. The stator assembly (400) of the linear motor according to claim 8, wherein, The outer peripheral wall of the tooth crown structure (30) is provided with a notch structure (305).

10. The stator assembly (400) of the linear motor according to claim 9, wherein, There are multiple notch structures (305), and the multiple notch structures (305) are arranged along the axial direction of the stator assembly (400).

11. The stator assembly (400) of the linear motor according to claim 10, wherein, There are two notch structures (305). Along the axial direction of the stator assembly (400), the two notch structures (305) are respectively arranged close to the edges of the tooth crown structure (30).

12. The stator assembly (400) of a linear motor according to any one of claims 1-11, wherein, There are multiple tooth crown structures (30), and the multiple tooth crown structures (30) are arranged around the stator body (204) along the circumferential direction of the stator body (204).

13. The stator assembly (400) of the linear motor according to claim 12, wherein, At least two adjacent tooth crown structures (30) are spaced apart to form an assembly space (201) between the two tooth crown structures (30).

14. A linear motor, wherein, Comprising a stator assembly (400) according to any one of claims 1 - 13.

15. A suspension device (500), wherein, Comprising a linear motor according to claim 14.

16. A vehicle, wherein, Comprising a suspension device (500) according to claim 15.

Images