Winding structure, stator assembly, suspension motor, electromagnetic suspension, and vehicle

Abstract

The present application discloses a winding structure, a stator assembly, a suspension motor, an electromagnetic suspension, and a vehicle. The winding structure comprises: two winding layers, wherein the two winding layers are stacked in the axial direction, the winding directions of the two winding layers are the same, and the two winding layers are arranged to each other. According to the winding structure provided by embodiments of the present application, the winding structure can reduce the winding difficulty and the manufacturing cost, and improve the winding efficiency.

Description

Winding structure, stator assembly, suspension motor, electromagnetic suspension and vehicle

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application number 2024206867635, filed on April 3, 2024, entitled “Winding structure, stator assembly, suspended motor, electromagnetic suspension and vehicle,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of motors, and in particular to a winding structure, a stator assembly, a suspended motor, an electromagnetic suspension, and a vehicle. Background Art

[0004] In the related art, most cylindrical suspension motors mainly use windings with large volumes, which cannot achieve high power within a limited space. 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 winding structure that can reduce the difficulty of winding and the manufacturing cost and improve the winding efficiency.

[0006] The present application also provides a stator assembly having the above winding structure.

[0007] The present application also proposes a suspension motor having the above-mentioned stator assembly.

[0008] The present application also proposes an electromagnetic suspension having the above-mentioned suspension motor.

[0009] The present application also proposes a vehicle having the electromagnetic suspension.

[0010] According to an embodiment of the present application, the winding structure includes: two winding layers, the two winding layers are stacked in the axial direction, the winding directions of the two winding layers are the same, and the two winding layers are adjacent to each other.

[0011] According to the winding structure of the embodiment of the present application, the winding structure includes two winding layers, which are adjacent and stacked in the axial direction. The winding structure adopts the method of winding the two winding layers in the same direction, thereby effectively improving the winding efficiency, reducing the winding difficulty, and reducing the cost. At the same time, since there is no other structure between the two winding layers, the volume of the winding structure can be effectively reduced, and greater power can be achieved in a limited space.

[0012] In some embodiments of the present application, the two winding layers are connected by a first connecting segment. In the axial direction, the first connecting segment is located on a side of one of the winding layers away from the other winding layer.

[0013] In some embodiments of the present application, the first connecting segment extends radially.

[0014] In some embodiments of the present application, the inner end and the outer end of each winding layer are arranged opposite to each other in the radial direction, or the inner end and the outer end are arranged alternately in the circumferential direction.

[0015] In some embodiments of the present application, the two winding layers respectively include: a first winding layer, the first winding layer having a first outer end, the first winding layer being wound from the radial outer side to the radial inner side of the first outer end, and a first inner end being arranged on the inner side of the first winding layer; a second winding layer, the second winding layer having a second outer end, the second outer end being connected to the first inner end through a first connecting section, and the second winding layer being wound from the second outer end from the radial outer side to the radial inner side.

[0016] In some embodiments of the present application, the winding structure further includes: a second connecting segment, the second winding layer is provided with a second inner end located on the inner side, and the second connecting segment is connected to the second inner end and extends radially.

[0017] In some embodiments of the present application, in the axial direction, the first connecting segment is arranged on a side of the first winding layer facing away from the second winding layer, and the second connecting segment is arranged on a side of the second winding layer facing away from the first winding layer.

[0018] In some embodiments of the present application, the starting section of one of the winding layers is the first outer end of the first winding layer; and the ending section of another winding layer is the second connecting section of the second winding layer.

[0019] In some embodiments of the present application, the winding structure is provided with a through hole extending in the axial direction, and the first inner end and the second inner end are located on the inner side wall of the through hole.

[0020] In some embodiments of the present application, the first winding layer and the second winding layer are formed by winding the same wire.

[0021] In some embodiments of the present application, the winding structure includes: a lead-out section, which is arranged radially outside the winding layer.

[0022] In some embodiments of the present application, the lead-out section further includes: a first lead-out section, which is formed by axially extending the starting section of one winding layer; and a second lead-out section, which is formed by axially extending the ending section of another winding layer.

[0023] In some embodiments of the present application, the first lead-out section and the second lead-out section are arranged correspondingly in the axial direction.

[0024] In some embodiments of the present application, the winding layer is surrounded by a flat wire.

[0025] The stator assembly according to an embodiment of the present application is briefly described below.

[0026] According to an embodiment of the present application, the stator assembly includes a stator core and the winding structure of the above embodiment. The stator core is formed with a plurality of stator slots spaced apart from each other in the axial direction. The winding structure is constructed as a plurality of winding structures spaced apart in the axial direction, and each winding structure is accommodated in a corresponding stator slot. Therefore, the winding structure of the stator assembly includes two winding layers, and the two winding layers are adjacent and stacked in the axial direction. The winding structure adopts the method of winding the two winding layers in the same direction, thereby effectively improving the winding efficiency, reducing the winding difficulty, and reducing the cost.

[0027] In some embodiments of the present application, an extension slot suitable for accommodating at least one of the first connecting segment and the second connecting segment is formed on the stator core.

[0028] The following briefly describes the levitation motor according to an embodiment of the present application.

[0029] According to the embodiment of the present application, the levitation motor is provided with the stator assembly of the above embodiment. Since the levitation motor of the embodiment of the present application is provided with the stator assembly of the above embodiment, the stator assembly of the levitation motor has a winding structure, and the winding structure includes two winding layers. The two winding layers are adjacent and stacked in the axial direction. The winding structure adopts the method of winding the two winding layers in the same direction, thereby effectively improving the winding efficiency, reducing the winding difficulty, and reducing the cost.

[0030] The following briefly describes a vehicle according to an embodiment of the present application.

[0031] According to the embodiment of the present application, the vehicle is provided with the electromagnetic suspension of the above embodiment. Since the vehicle of the embodiment of the present application is provided with the electromagnetic suspension of the above embodiment, the electromagnetic suspension of the vehicle has a suspension motor of the above embodiment, and the suspension motor is provided with a stator assembly of the above embodiment. The winding structure in the stator assembly includes two winding layers, and the two winding layers are adjacent and stacked in the axial direction. The winding structure adopts the method of winding the two winding layers in the same direction, thereby effectively improving the winding efficiency, reducing the winding difficulty, and reducing the cost.

[0032] 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

[0033] FIG1 is a schematic structural diagram of multiple winding layers of a winding structure according to an embodiment of the present application;

[0034] FIG2 is a schematic structural diagram of two winding layers of a winding structure according to an embodiment of the present application;

[0035] FIG3 is another schematic structural diagram of the two winding layers in FIG2 ;

[0036] FIG4 is a side view schematic diagram of the winding structure in FIG1 ;

[0037] FIG5 is a schematic structural diagram of a stator core according to an embodiment of the present application;

[0038] FIG6 is another structural schematic diagram of the stator core in FIG5 ;

[0039] FIG7 is a schematic structural diagram of a stator assembly according to an embodiment of the present application;

[0040] FIG8 is a schematic cross-sectional view of FIG7 .

[0041] Figure numerals: 10, winding structure; 11, first connecting section; 12, first winding layer; 121, first outer end; 122, first inner end; 13, second winding layer; 131, second outer end; 132, second inner end; 14, second connecting section; 15, first lead-out section; 16, second lead-out section; 20, stator assembly; 21, stator core; 211, first extension slot; 212, second extension slot. DETAILED DESCRIPTION

[0042] 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.

[0043] The following describes a winding structure 10 according to an embodiment of the present application with reference to Figures 1 to 8. The winding structure 10 includes two winding layers, which are stacked in the axial direction. Each winding layer is a structure wound along a first direction, wherein the two winding layers are adjacent to each other.

[0044] At present, most cylindrical suspension motors mainly use windings with large volume, which cannot achieve high power in a limited space. The winding form of the suspension motor is to lead out from the inside and outside of the coil, and the inner lead needs to cross the entire winding to the outside and then be connected to another coil by welding. However, this winding form will cause the winding directions of two adjacent coils in the radial direction to be different, which increases the winding difficulty and manufacturing cost.

[0045] As shown in Figures 1 to 4, specifically, the winding structure 10 includes two winding layers, and the two winding layers can be stacked in sequence in the axial direction. It should be explained that the axial direction can be the axial direction of the winding structure 10, and the two winding layers can be arranged on the same stator core 21. The winding directions of the two winding layers are the same, wherein the winding direction can be the line winding method or winding direction of the wire. In a specific embodiment, each winding layer is a structure wound along a first direction, where the first direction referred to here can be the radial direction of the winding structure 10, and the winding method of the winding layer can be winding from the outside to the inside, and the winding directions of the two adjacent winding layers are the same, and the winding directions can be clockwise winding and counterclockwise winding. By winding the two winding layers in the same direction, the winding difficulty and manufacturing cost can be reduced, and the winding efficiency can be improved.

[0046] In short, the winding structure 10 of the present application includes two winding layers, which are adjacent and stacked in the axial direction. The winding structure 10 adopts the method of winding the two winding layers in the same direction, thereby effectively improving the winding efficiency, reducing the winding difficulty, and reducing the cost. At the same time, since there is no other structure between the two winding layers, the volume of the winding structure can be effectively reduced, and greater power can be achieved in a limited space.

[0047] In some embodiments of the present application, the winding structure includes at least two winding layers, which are stacked in the axial direction, wherein the winding direction of each winding layer is the same, and at least two winding layers are adjacently arranged, that is, in the axial direction, at least two winding layers are adjacently arranged, wherein adjacent arrangement means that in the axial direction, there is no other structure between the two winding layers, and they are directly connected, thereby reducing the volume of the winding structure.

[0048] As shown in Figures 2 and 3, in some embodiments of the present application, two winding layers can be connected through a first connecting segment 11, one end of the first connecting segment 11 can be connected to the winding-out end of one of the winding layers, and the other end of the first connecting segment 11 can be connected to the winding-in end of the other winding layer, so that the first connecting segment 11 connects the two adjacent winding layers. In addition, the winding structure 10 can ensure that the lead wires of the multiple winding layers are located in the same axial space, and the stator core 21 does not need to be additionally slotted, which reduces the risk of sudden changes in the electromagnetic wires and ensures the lifting force of the motor. In addition, using the first connecting segment 11 to connect the two winding layers also has the effect of interrupting the eddy current circuit and reducing eddy current losses. By setting the first connecting segment 11, the welding process can be eliminated, and the risk of insulation withstand voltage failure at the welding point due to the welding process can be eliminated.

[0049] Furthermore, the first connecting section 11 can be located on the side of one winding layer away from the other winding layer, thereby ensuring that the first connecting section 11 is not located between the two winding layers, avoiding the first connecting section 11 affecting the positions of the two winding layers and causing a gap between the two winding layers, making it easier to wind the winding layers, and at the same time improving the slot fill rate, thereby increasing the power of the suspension motor.

[0050] As shown in Figures 2 and 3, in some embodiments of the present application, each winding layer has an inner end and an outer end, the outer end of the winding layer can be the end of the flat wire away from the axis, and the inner end of the winding layer can be the end of the flat wire close to the axis, wherein the inner end and the outer end of the winding layer can be arranged opposite each other in the radial direction, or the inner end and the outer end of the winding layer can be staggered in the circumferential direction, and the two adjacent winding layers can be wound clockwise and counterclockwise, respectively, to ensure that the winding layers are arranged tightly and make full use of the space.

[0051] As shown in Figures 2 and 3, in some embodiments of the present application, the first connecting section 11 can extend radially, so that the first connecting section 11 interrupts the eddy current formed by the winding structure 10 after power is applied, reduces eddy current loss, and makes the heat generated by the winding structure 10 during operation smaller, thereby reducing the heat generation of the winding structure 10, helping to improve the performance of the winding structure 10 and improve the lifting force of the motor.

[0052] Specifically, the extension direction of the first connecting segment 11 can be radial or close to radial. It can be understood that the first connecting segment 11 can extend radially along the winding structure 10, or the first connecting segment 11 can extend radially and tiltedly in the circumferential direction of the winding structure 10. The inclination angle of the first connecting segment 11 can be arranged according to actual winding requirements. It should be noted that the position of the inner end and the outer end of each winding layer is set according to the winding process of the winding, the length of the winding in each winding and the size of the winding. When the inner end and the outer end of each winding layer are arranged opposite each other in the radial direction, the extension direction of the first connecting segment 11 can be radial. When the inner end and the outer end of each winding layer are staggered in the circumferential direction, the extension direction of the first connecting segment 11 can be close to radial, that is, it is tilted in the radial direction. Therefore, the extension direction of the first connecting segment 11 of the winding structure 10 of the present application can be radial extension or relative circumferential extension to meet the winding process of different windings, and has better adaptability.

[0053] As shown in Figures 1 to 4, in some embodiments of the present application, the two winding layers include a first winding layer 12 and a second winding layer 13, respectively. The first winding layer 12 has a first outer end 121, and the first winding layer 12 is wound from the radial outer side to the radial inner side, wherein the winding can be stacked and wrapped in a circumferential cycle. A first inner end 122 is provided on the inner side of the first winding layer 12. It should be noted that the first outer end 121 is the starting section of the first winding layer 12, and the first inner end 122 is the ending section of the first winding layer 12. The second winding layer 13 has a second outer end 131. It should be noted that the second outer end 131 is the starting section of the second winding layer 13, and the second outer end 131 and the first inner end 122 are connected by the first The winding structure 10 is connected to a connecting segment 11, and the second winding layer 13 is formed by winding radially outward from the second outer end 131 to the radial inner side. It can be understood that in the actual winding process, the winding structure 10 starts from the first outer end 121 of the first winding layer 12 and is wound radially outward to the radial inner side until the first inner end 122 is drawn out after the winding of the first winding layer 12 is completed. The first inner end 122 is then connected to one end of the first connecting segment 11. The first connecting segment 11 extends radially or nearly radially, and the other end of the first connecting segment 11 is connected to the second outer end 131 of the second winding layer 13. The winding structure 10 is then wound radially inward from the second outer end 131 to complete the winding of the first winding layer 12 and the second winding layer 13. The winding structure 10 is provided with an axially extending through hole, and the first inner end 122 and the second inner end 132 are located on the inner side wall of the through hole. The first inner end 122 and the second inner end 132 can be connected to the inner side wall of the through hole or can be inside the through hole.

[0054] It can be understood that, after the first inner end 122 extends in the axial direction, it is connected to the first connecting section 11 extending in the radial direction.

[0055] Furthermore, the first winding layer 12 and the second winding layer 13 can be arranged around a flat wire, wherein the first winding layer 12, the first connecting section 11 and the second winding layer 13 can be continuously wound using a single seamless flat wire, without the need for welding points, thereby reducing the welding process steps and saving costs. In addition, in order to ensure that the space of the stator core 21 can be utilized to a greater extent, the winding structure 10 of the present application adopts a technology that can regularize and miniaturize the coil. It can be understood that the winding structure 10 uses flat wire for winding. Through the above technical solution, a low-height and more regular coil can be obtained. In the related art, most suspension motor coils use circular cross-section windings. Although the production and winding are simpler, more core space will be wasted due to the structural limitations of the circular winding. Using flat wire for winding can better fill these gaps and make the entire flat wire more neat and compact after winding, reducing the gap between the flat wire and the stator core 21, thereby greatly improving the slot fill rate of the stator core 21 and increasing the power of the suspension motor. Furthermore, since no etching process is required, the device can be manufactured safely and at low cost, and can operate well in high-frequency bands, resulting in a significant improvement in overall performance.

[0056] As shown in FIG3 , in some embodiments of the present application, the winding structure 10 may further include a second connecting segment 14. The second winding layer 13 is radially arranged inward from the second outer end 131 to form a second inner end 132 located on the inner side. The second connecting segment 14 can be connected to the second inner end 132, and the second connecting segment 14 can extend radially to ensure that the end of the first connecting segment 11 and the end of the second connecting segment 14 can be located in the same axial space. The second connecting segment 14 can be used to connect to an adjacent winding layer or a second lead-out segment 16, thereby ensuring that the second winding layer 13 is connected to other adjacent winding layers or the second lead-out segment 16. In some embodiments, the second connecting segment 14 and the second winding layer 13 can use the same flat wire, eliminating the need for an additional lead-out wire, thereby reducing welding process steps and saving costs. The starting section of one winding layer is the first outer end 121 of the first winding layer 12 , and the ending section of the other winding layer is the second connecting section 14 of the second winding layer 13 . The second connecting section 14 can be formed by extending axially away from the second inner end 132 .

[0057] As shown in Figures 2 and 3, in some embodiments of the present application, the first connecting segment 11 can be arranged on the side of the first winding layer 12 away from the second winding layer 13, and the second connecting segment 14 can be arranged on the side of the second winding layer 13 away from the first winding layer 12, so as to ensure that the first connecting segment 11 and the second connecting segment 14 are not located between the first winding layer 12 and the second winding layer 13, thereby avoiding the first connecting segment 11 and the second connecting segment 14 affecting the position of the first winding layer 12 and the second winding layer 13, thereby causing a gap to be generated between the first winding layer 12 and the second winding layer 13, and the arrangement position of the above-mentioned first connecting segment 11 and the second connecting segment 14 is also beneficial to the winding of the first winding layer 12 and the second winding layer 13, and can also improve the slot fill rate, thereby improving the power of the suspension motor.

[0058] As shown in Figures 2 and 3, in other embodiments of the present application, the first connecting segment 11 and the second connecting segment 14 can be respectively arranged on the side of the first winding layer 12 away from the second winding layer 13, and an extension groove extending in the axial direction needs to be processed on the stator core 21. The extension groove can be constructed in multiple forms and respectively accommodate the first connecting segment 11 and the second connecting segment 14. When the first connecting segment 11 and the second connecting segment 14 are located on the same side, it is only necessary to process the extension groove on the same side of the stator core 21, thereby reducing the processing difficulty of the stator core 21.

[0059] As shown in Figures 1 to 4, in some embodiments of the present application, the winding structure 10 further includes a lead-out section, which can be arranged on the radially outer side of the winding layer, and the lead-out section can connect multiple winding layers. By arranging the lead-out section on the radially outer side of the winding layer, it is convenient to arrange the lead wire, making it easier to slot the stator core 21 on the periphery and providing sufficient installation space for the arrangement of the lead-out section. Furthermore, the lead-out section further includes a first lead-out section 15 and a second lead-out section 16. The first lead-out section 15 and the second lead-out section 16 can be arranged to extend in the axial direction, wherein the first lead-out section 15 can be connected to the first outer end 16. 121 is connected, the second lead-out section 16 can be connected to the free end of the second connecting section 14, the first lead-out section 15 and the second lead-out section 16 can be arranged opposite each other in the axial direction and extend in the direction away from each other. It can be understood that the first lead-out section 15 is extended in the direction away from the second winding layer 13, and the second lead-out section 16 is extended in the direction away from the first winding layer 12. The first lead-out section 15 and the second lead-out section 16 can be arranged opposite each other in the axial direction and can also reduce the number of slots in the stator core 21, thereby improving the structural strength of the stator core 21 and making the structure of the stator core 21 more regular.

[0060] In a specific embodiment of the present application, the first winding layer 12 has a first outer end 121 and a first inner end 122. The first outer end 121 can be the starting section of the first winding layer 12, and the first inner end 122 can be the ending section of the first winding layer 12. The first winding layer 12 is wound from the outside to the inside, and the first inner end 122 can be connected to one end of the first connecting section 11.

[0061] The second winding layer 13 has a second outer end 131 and a second inner end 132, the second outer end 131 can be the starting section of the second winding layer 13, and the second inner end 132 can be the ending section of the second winding layer 13, the second outer end 131 can be connected to the other end of the first connecting section 11, and the second winding layer 13 is also wound from the outside to the inside, and the second inner end 132 is connected to the second connecting section 14, wherein the first outer end 121 and the second connecting section 14 are respectively formed with a first lead-out section 15 and a second lead-out section 16 facing away from each other, and the first lead-out section 15 and the second lead-out section 16 are extended in the axial direction.

[0062] The stator assembly 20 according to an embodiment of the present application is briefly described below.

[0063] As shown in Figures 7 and 8, the stator assembly 20 according to an embodiment of the present application includes a stator core 21 and the winding structure 10 of the above embodiment. The stator core 21 is formed with a plurality of stator slots spaced apart from each other in the axial direction. The winding structure 10 is constructed as a plurality of winding structures spaced apart in the axial direction, and each winding structure 10 is accommodated in a corresponding stator slot. Therefore, the winding structure 10 of the stator assembly 20 includes two winding layers, and the two winding layers are adjacent and stacked in the axial direction. The winding structure 10 adopts the method of winding the two winding layers in the same direction, thereby effectively improving the winding efficiency, reducing the winding difficulty, and reducing the cost.

[0064] As shown in Figures 5 and 6, in some embodiments of the present application, an extension slot is formed on the stator core 21. The extension slot can be recessed toward the interior of the stator core 21. The extension slot can be used to accommodate the first connecting segment 11 or the second connecting segment 14, or the extension can be used to accommodate the first connecting segment 11 and the second connecting segment 14, thereby avoiding the first connecting segment 11 and / or the second connecting segment 14 causing a spatial air gap between the winding structure 10, reducing the risk of electromagnetic wire mutation. In a specific embodiment, the extension slot can include a first extension slot 211 and a second extension slot 212. The first extension slot 211 can be used to accommodate the first connecting segment 11, and the second extension slot 212 can be used to accommodate the second connecting segment 14. The first extension slot 211 and the second extension slot 212 can be arranged on both sides or the same side of the stator core 21 in the axial direction. Specifically, when the first extension slot 211 and the second extension slot 212 are arranged on the same side of the stator core 21 in the axial direction, the extension slots only need to be processed on the same side of the stator core 21, reducing the difficulty of processing the stator core 21.

[0065] In some embodiments of the present application, each winding structure 10 is provided with an odd number of winding layers, and in two adjacent winding structures 10, the inner end of the starting winding layer of one winding structure 10 is connected to the outer end of the ending winding layer of the other winding structure 10. In other embodiments of the present application, each winding structure 10 is provided with an even number of winding layers, and the inner end of the starting winding layer of one winding structure 10 is connected to the outer end of the ending winding layer of the other winding unit. This arrangement can adapt to different voltage platforms, has more winding form options in high-voltage platforms, and facilitates better optimization design of various motor parameters such as thrust, loss, and heat dissipation.

[0066] In some embodiments of the present application, winding layers of the same phase are placed within a stator slot. These same-phase winding layers do not require interphase insulation; instead, each winding layer can be insulated by its own paint film, eliminating interlayer insulation. Eliminating interlayer insulation between each winding layer improves the overall core design by increasing space utilization within the stator core 21 and reducing the cost of manufacturing and using interlayer insulation.

[0067] The following briefly describes the levitation motor according to an embodiment of the present application.

[0068] According to the embodiment of the present application, the levitation motor is provided with the stator assembly 20 of the above embodiment. Since the levitation motor of the embodiment of the present application is provided with the stator assembly 20 of the above embodiment, the stator assembly 20 of the levitation motor has a winding structure 10. The winding structure 10 includes two winding layers. The two winding layers are adjacent and stacked in the axial direction. The winding structure 10 adopts the method of winding the two winding layers in the same direction, thereby effectively improving the winding efficiency, reducing the winding difficulty, and reducing the cost.

[0069] The following briefly describes the electromagnetic suspension according to an embodiment of the present application.

[0070] The electromagnetic suspension according to the embodiment of the present application is provided with the suspension motor of the above embodiment. Since the electromagnetic suspension according to the embodiment of the present application is provided with the suspension motor of the above embodiment, the suspension motor in the electromagnetic suspension has a stator assembly 20. The winding structure 10 in the stator assembly 20 includes two winding layers, and the two winding layers are adjacent and stacked in the axial direction. The winding structure 10 adopts the method of winding the two winding layers in the same direction, thereby effectively improving the winding efficiency, reducing the winding difficulty, and reducing the cost.

[0071] The following briefly describes a vehicle according to an embodiment of the present application.

[0072] According to the embodiment of the present application, the vehicle is provided with the electromagnetic suspension of the above embodiment. Since the vehicle of the embodiment of the present application is provided with the electromagnetic suspension of the above embodiment, the electromagnetic suspension of the vehicle has a suspension motor of the above embodiment, and the suspension motor is provided with the stator assembly 20 of the above embodiment. The winding structure 10 in the stator assembly 20 includes two winding layers, and the two winding layers are adjacent and stacked in the axial direction. The winding structure 10 adopts the method of winding the two winding layers in the same direction, thereby effectively improving the winding efficiency, reducing the winding difficulty, and reducing the cost.

[0073] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do 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 therefore should not be understood as a limitation on the present application.

[0074] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0075] In the description of this application, “plurality” means two or more.

[0076] In the description of the present application, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact with each other, or the first and second features being in contact with each other not directly but via another feature therebetween.

[0077] In the description of this application, a first feature “on”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0078] 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.

[0079] 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 winding structure, characterized in that: include: Two winding layers, the two winding layers are stacked in the axial direction, the winding directions of the two winding layers are the same, and the two winding layers are adjacent to each other.

2. The winding structure according to claim 1, characterized in that The two winding layers are connected via a first connecting section. In the axial direction, the first connecting section is located on a side of one of the winding layers away from the other winding layer.

3. The winding structure according to claim 2, characterized in that: The first connecting section extends in a radial direction.

4. The winding structure according to claim 3, characterized in that: The inner end and the outer end of each winding layer are arranged opposite to each other in the radial direction, or the inner end and the outer end are arranged alternately in the circumferential direction.

5. The winding structure according to any one of claims 1 to 4, characterized in that: The two winding layers respectively include: a first winding layer, the first winding layer having a first outer end, the first winding layer being wound from the first outer end to the radial inner side, and a first inner end being provided on the inner side of the first winding layer; The second winding layer has a second outer end, the second outer end is connected to the first inner end through a first connecting section, and the second winding layer is formed by winding radially outward and laterally radially inward from the second outer end.

6. The winding structure according to claim 5, characterized in that: Also includes: The second connecting section is provided with a second inner end located on the inner side of the second winding layer, and the second connecting section is connected to the second inner end and extends radially.

7. The winding structure according to claim 6, characterized in that In the axial direction, the first connecting section is provided on a side of the first winding layer facing away from the second winding layer, and the second connecting section is provided on a side of the second winding layer facing away from the first winding layer.

8. The winding structure according to claim 6 or 7, characterized in that: The starting section of one of the winding layers is the first outer end of the first winding layer; The terminating section of another winding layer is the second connecting section of the second winding layer.

9. The winding structure according to any one of claims 6 to 8, characterized in that: The winding structure is provided with a through hole extending in the axial direction, and the first inner end and the second inner end are located on the inner side wall of the through hole.

10. The winding structure according to any one of claims 5 to 9, characterized in that: The first winding layer and the second winding layer are formed by winding the same wire.

11. The winding structure according to any one of claims 1 to 10, characterized in that: include: The lead-out section is arranged radially outside the winding layer.

12. The winding structure according to claim 11, characterized in that The lead-out section also includes: a first lead-out section, the first lead-out section being formed by extending axially from a starting section of one of the winding layers; The second lead-out section is formed by extending the terminal section of another winding layer in the axial direction.

13. The winding structure according to claim 12, characterized in that: The first lead-out section and the second lead-out section are correspondingly arranged in the axial direction.

14. The winding structure according to any one of claims 1 to 13, characterized in that: The winding layers are wound around a flat wire.

15. A stator assembly, characterized in that: include: a stator core, wherein the stator core is formed with a plurality of stator slots spaced apart from each other in the axial direction; A winding structure, wherein the winding structure is constructed as the winding structure according to any one of claims 1 to 14 and is accommodated in the corresponding stator slot.

16. The stator assembly according to claim 15, characterized in that An extension slot suitable for accommodating at least one of the first connecting segment and the second connecting segment is formed on the stator core.

17. A suspension motor, characterized in that: The stator assembly comprises the stator assembly described in any one of claims 15-16.

18. A vehicle, characterized in that: Including the electromagnetic suspension according to claim 18.

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