Winding structure, stator and motor
Through the movable connection between the first winding module and the second winding module, the welding process of the flat wire motor is simplified, the problem of high defect rate of finished products caused by the many solder joints is solved, and a winding structure with high reliability and easy maintenance is achieved.
Patent Information
- Application Number
- CN202421218118.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-05-30
AI Technical Summary
There are many welding points in the production of existing flat wire motors, resulting in high defect rate of finished products, complex welding process and poor reliability.
The ring-shaped winding structure in which the first winding module and the second winding module are movably connected, simplifying the twist head welding process, and movable connection is achieved through the complementary angle or convex structure of the first connecting teeth and the second connecting teeth.
Reduces the defect rate, improves product performance and reliability, and facilitates disassembly and repairs.
Smart Images
Figure CN223168110U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of motors, and particularly to a winding structure, a stator and a motor. Background Art
[0002] With the continuous improvement of the energy density requirements of the electric drive system for new energy vehicles, round wire motors can no longer meet the needs of the electric drive, and flat wire motors are gradually applied to the new energy vehicle industry.
[0003] In the production of flat wire motors, it is necessary to twist the wires in opposite directions so that the welding ends of different wires are aligned in a preset order and then welded. The number of stator welds increases from 4 star point welds to hundreds of copper wire welds, and the motor welding process is complex, difficult and unreliable, greatly increasing the risk of defective products.
[0004] Therefore, how to provide a winding structure, a stator and a motor that reduce the number of welding points and simplify the motor manufacturing process is an urgent problem to be solved at present. Summary of the Utility Model
[0005] The purpose of the embodiments of the present application is to provide a winding structure, a stator and a motor, which solve the problem that there are many welding points in the production of existing flat wire motors, thus increasing the defective rate of finished products.
[0006] To solve the above technical problems, the embodiments of the present application provide the following technical solutions:
[0007] The first aspect of the present application provides a winding structure, which includes a first winding part and a second winding part. The first winding part includes an annular first wire package, and a plurality of first winding modules are arranged at intervals along the circumference of the top of the first wire package and extend axially; the second winding part includes an annular second wire package, and a plurality of second winding modules are arranged at intervals along the circumference of the bottom of the second wire package and extend axially; wherein, the plurality of first winding modules and the plurality of second winding modules correspond to each other one by one and are movably connected so that the second winding part is movably sleeved on the first winding part axially to form a circular winding structure.
[0008] In some embodiments, the first wire package is a multi-layer annular structure formed by staggering the first connection ends of a plurality of first flat wires, and each first flat wire includes two first flat wire columns extending axially, and the first connection end is arranged between the ends of the two first flat wire columns; each layer of first flat wire columns in the multi-layer annular structure corresponds to the first flat wire columns of other layers to form a plurality of first winding modules; the second wire package is a multi-layer annular structure formed by staggering the second connection ends of a plurality of second flat wires, and each second flat wire includes two second flat wire columns extending axially, and the second connection end is arranged between the ends of the two second flat wire columns; each layer of second flat wire columns in the multi-layer annular structure corresponds to the second flat wire columns of other layers to form a plurality of second winding modules.
[0009] In some embodiments, the heights of the plurality of first flat wire columns of the first winding module increase or decrease from the inside to the outside of the loop of the first wire coil to form a stepped shape; the heights of the plurality of second flat wire columns of the second winding module decrease or increase from the inside to the outside of the loop of the second wire coil to form a stepped shape adapted to the first winding module.
[0010] In some embodiments, one end of each first flat wire column opposite to the first connection end is provided with a first connection tooth, one end of each second flat wire column opposite to the second connection end is provided with a second connection tooth, and the first flat wire column and the corresponding second flat wire column are movably connected through the first connection tooth and the second connection tooth.
[0011] In some embodiments, a first included angle is formed between the first connection end face of the first connection tooth and the radial face of the first winding part, and first saw teeth are arranged on the first connection end face; a second included angle is formed between the second connection end face of the second connection tooth and the radial face of the second winding part, and second saw teeth engaged with the first saw teeth are arranged on the second connection end face; the first included angle and the second included angle form complementary angles.
[0012] In some embodiments, one end of each first flat wire column opposite to the first connection end is provided with a connection convex part or a connection concave part, one end of each second flat wire column opposite to the second connection end is provided with a connection concave part or a connection convex part, and the first flat wire column and the corresponding second flat wire column are movably connected through the connection convex part and the connection concave part.
[0013] The second aspect of the present application provides a stator, which includes a winding structure and a stator core; a plurality of first winding modules of the winding structure correspond to a plurality of core slots arranged at intervals along the circumference of the stator core one by one and are movably connected to the corresponding second winding modules in the core slots, so that the first wire coil and the second wire coil are respectively exposed at both ends of the stator core.
[0014] In some embodiments, an arc part is provided on one side of each core slot close to the inner peripheral wall of the stator core.
[0015] In some embodiments, an opening is provided on one side of the core slot opposite to the outer peripheral wall of the stator core, and convex parts extending along the circumference of the stator core are provided on the opposite side walls of the opening.
[0016] The third aspect of the present application provides a motor, which includes a winding structure, a stator core and a rotor; for the stator core, a plurality of first winding modules of the winding structure correspond to a plurality of core slots arranged at intervals along the circumference of the stator core one by one and are movably connected to the corresponding second winding modules in the core slots, so that the first wire coil and the second wire coil are respectively exposed at both ends of the stator core; the rotor is coaxial with the stator core and is movably connected in the stator core.
[0017] By the above technical solutions, the winding structure, stator and motor of the present utility model at least have the following advantages:
[0018] A winding structure provided in the first aspect of the present application, the winding structure includes a first winding part and a second winding part. When manufacturing the winding structure, only by corresponding a plurality of first winding modules of the first winding part and a plurality of second winding modules of the second winding part one by one and applying pressure, the plurality of first winding modules and their corresponding second winding modules can be movably connected, so that the second winding part is movably sleeved on the first winding part along the axial direction to form a loop-shaped winding structure. By setting the first winding module and the second winding module, the present application simplifies the twisting welding process in the existing winding structure, reduces the defective rate, and improves the product performance and reliability.
[0019] A stator provided in the second aspect of the present application has the same effect as the above winding structure.
[0020] A motor provided in the third aspect of the present application has the same effect as the above winding structure.
[0021] The above description is only an overview of the technical solutions of the present utility model. In order to be able to understand the technical means of the present utility model more clearly and implement it according to the content of the specification, the following describes in detail with reference to the preferred embodiments of the present utility model and the accompanying drawings. Description of the Drawings
[0022] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present application will become easy to understand. In the drawings, several embodiments of the present application are shown in an exemplary rather than restrictive manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:
[0023] Figure 1 Schematically shows a structural diagram of a combination of a winding structure provided by the present utility model and a stator core;
[0024] Figure 2 Schematically shows a structural diagram of the first winding part of a winding structure provided by the present utility model;
[0025] Figure 3 Schematically shows a structural diagram of the second winding part of a winding structure provided by the present utility model;
[0026] Figure 4 Schematically shows an enlarged view of a partial area A;
[0027] Figure 5 Schematically shows a top view structural diagram of the stator core provided by the present utility model.
[0028] Explanation of the Reference Numerals in the Drawings:
[0029] 1. First winding part; 2. First wire package; 3. First winding module; 31. First flat wire; 311. First connection end; 312. First flat wire column; 3121. First connection end face; 3121a. First sawtooth; 4. Second winding part; 5. Second wire package; 6. Second winding module; 61. Second flat wire; 611. Second connection end; 612. Second flat wire column; 6121. Second connection end face; 6121a. Second sawtooth; α. First included angle; β. Second included angle; 7. Stator core; 71. Core slot; 711. Arc part; 712. Opening; 7121. Protrusion part. Specific embodiments
[0030] The following further describes the embodiments of the present application in detail with reference to the drawings and embodiments. The detailed description and drawings of the following embodiments are used to exemplarily illustrate the principle of the present application, but cannot be used to limit the scope of the present application. The present application can be implemented in many different forms, not limited to the specific embodiments disclosed in the text, but including all technical solutions falling within the scope of the claims.
[0031] It should be noted that in the description of the present application, unless otherwise specified, the meaning of "a plurality" is greater than or equal to two; the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present application. When the absolute position of the described object changes, the relative position relationship may also change accordingly.
[0032] In addition, the "first", "second" and similar terms used in the present application do not represent any order, quantity or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. The terms "including" or "comprising" and the like mean that the elements before the term cover the elements listed after the term, and do not exclude the possibility of also covering other elements.
[0033] It should also be noted that in the description of this application, unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances. All terms used in this application have the same meanings as those understood by those of ordinary skill in the art to which this application belongs, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as, should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such here.
[0034] Technologies, methods, and devices known to those of ordinary skill in the relevant field may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification.
[0035] In the existing flat wire winding structure, multiple turns need to be made and then welded. The inventor wants to design a winding structure that can replace the turn welding with tenon and mortise connections and does not require multiple weldings to reduce the defect rate.
[0036] Embodiment 1
[0037] Embodiment 1 of this application provides a winding structure, which includes a first winding portion 1 and a second winding portion 4. The first winding portion 1 includes an annular first wire package 2, and a plurality of first winding modules 3 are arranged at the top of the first wire package 2 at intervals along its circumference and extending axially; the second winding portion 4 includes an annular second wire package 5, and a plurality of second winding modules 6 are arranged at the bottom of the second wire package 5 at intervals along its circumference and extending axially; wherein, the plurality of first winding modules 3 and the plurality of second winding modules 6 are respectively in one-to-one correspondence and movably connected so that the second winding portion 4 is movably sleeved on the first winding portion 1 axially to form a circular winding structure.
[0038] Specifically, as Figures 1-3As shown, the diameters of the first wire package 2 and the second wire package 5 can be set according to actual needs. The number of the first winding modules 3 and the second winding modules 6 is equal and not less than four. The first winding modules 3 and the second winding modules 6 have the same height extending along the axial direction, and the extending directions are opposite. A plurality of first winding modules 3 and a plurality of second winding modules 6 correspond to each other one by one and are movably connected. The movable connection here includes, but is not limited to, detachable connection methods such as snap connection and plug connection. The second winding part 4 is movably sleeved on the first winding part 1 along the axial direction to form a loop-shaped winding structure. The positional relationship between the second winding part 4 and the first winding part 1 can be: the second winding part 4 is sleeved on the outside of the first winding part 1 or the second winding part 4 is sleeved on the inside of the first winding part 1.
[0039] A winding structure provided by the present application includes a first winding part 1 and a second winding part 4. When manufacturing the winding structure, only by corresponding the plurality of first winding modules 3 of the first winding part 1 with the plurality of second winding modules 6 of the second winding part 4 one by one and applying pressure, the first winding module 3 can be movably connected with its corresponding second winding module 6, so that the second winding part 4 is movably sleeved on the first winding part 1 along the axial direction to form a loop-shaped winding structure. By setting the first winding module 3 and the second winding module 6, the present application simplifies the twisting welding process in the existing winding structure, reduces the defective rate, and improves the product performance and reliability. In addition, the first winding module 3 and the second winding module 6 are movably connected, which is convenient for disassembling between the first winding part 1 and the second winding part 4, so as to facilitate maintenance or replacement of the winding.
[0040] In some embodiments, the first wire package 2 is a multi-layer ring structure formed by staggering the first connection ends 311 of a plurality of first flat wires 31 and enclosing them. Each first flat wire 31 includes two first flat wire columns 312 extending along the axial direction, and the first connection end 311 is arranged between the ends of the two first flat wire columns 312; each layer of first flat wire columns 312 in the multi-layer ring structure corresponds to the first flat wire columns 312 of other layers to form a plurality of first winding modules 3; the second wire package 5 is a multi-layer ring structure formed by staggering the second connection ends 611 of a plurality of second flat wires 61 and enclosing them. Each second flat wire 61 includes two second flat wire columns 612 extending along the axial direction, and the second connection end 611 is arranged between the ends of the two second flat wire columns 612; each layer of second flat wire columns 612 in the multi-layer ring structure corresponds to the second flat wire columns 612 of other layers to form a plurality of second winding modules 6.
[0041] Specifically, as Figure 2 and Figure 3As shown, the first flat wire 31 includes two first flat wire columns 312 and a first flat wire connection end 311 located between the ends of the two first flat wire columns 312. The distance between the two first flat wire columns 312 and the shape of the first connection end 311 can be set according to actual needs. The first wire package 2 is a multi-layer annular structure formed by staggering a plurality of first flat wires 31 so that their first connection ends 311 enclose each other. The number of layers of this multi-layer annular structure is at least 2 layers. When the number of layers of the multi-layer annular structure is 2 layers, the number of first flat wires 31 in the first winding module 3 is 2. Adjacent first flat wires 31 are staggered, and the staggering distance is such that the distance between the first flat wire column 312 and the adjacent first flat wire column 312 is greater than or equal to 8 mm. The second flat wire 61 includes two second flat wire columns 612 and a second connection end 611 located between the ends of the two second flat wire columns 612. The distance between the two second flat wire columns 612 and the shape of the second connection end 611 can be set according to actual needs. The second wire package 5 is a multi-layer annular structure formed by staggering a plurality of second flat wires 61 so that their second connection ends 611 enclose each other. The number of layers of this multi-layer annular structure is at least 2 layers and the number of layers of this multi-layer annular structure is the same as the number of layers of the multi-layer annular structure formed by staggering the first flat wires 31. In addition, adjacent second flat wires 61 are staggered, and the staggering distance is such that the distance between the second flat wire column 612 and the adjacent second flat wire column 612 is greater than or equal to 8 mm, and the staggering distance between the second flat wire columns 612 is equal to the staggering distance of the first flat wire columns 312.
[0042] In some embodiments, the heights of the multiple first flat wire columns 312 of the first winding module 3 increase or decrease from the inside of the ring of the first wire package 2 to the outside of the ring to form a stepped shape; the heights of the multiple second flat wire columns 612 of the second winding module 6 decrease or increase from the inside of the ring of the second wire package 5 to the outside of the ring to form a stepped shape adapted to the first winding module 3.
[0043] Specifically, as Figure 2 and Figure 3As shown, the heights of multiple first flat wire columns 312 increase from the inner ring to the outer ring of the first wire wrap 2. Then, the heights of multiple second flat wire columns 612 decrease from the inner ring to the outer ring of the second wire wrap 5 to match the first flat wire columns 312. Or the heights of multiple first flat wire columns 312 decrease from the inner ring to the outer ring of the first wire wrap 2, and the heights of multiple second flat wire columns 612 increase from the inner ring to the outer ring of the second wire wrap 5 to match the first flat wire columns 312. The height of the first flat wire column 312 increases or decreases from the inner ring to the outer ring of the first wire wrap 2. The range of the increasing or decreasing distance of the first flat wire column 312 is 5 - 10 mm. For example, the increasing distance can be 5 mm, 7 mm, or 10 mm, etc. In addition, the increase and decrease of the first flat wire column 312 can be an even increase or decrease, or an uneven increase or decrease. The second flat wire column 612 has the same range of decreasing or increasing distance as its corresponding first flat wire column 312. The stepped first winding module 3 and the stepped second winding module 6 are to prevent conduction between the first flat wire columns 312 in adjacent layer structures or between the second flat wire columns 612, and also facilitate differentiating the wire types.
[0044] In some embodiments, each first flat wire column 312 is provided with a first connecting tooth at one end opposite to the first connection end 311, and each second flat wire column 612 is provided with a second connecting tooth at one end opposite to the second connection end 611. The first flat wire column 312 and its corresponding second flat wire column 612 are movably connected through the first connecting tooth and the second connecting tooth.
[0045] Specifically, as Figure 1 shown, the first connecting tooth and the second connecting tooth can be connected by clamping or plugging. This facilitates the disassembly between the first winding part 1 and the second winding part 4, and also facilitates the connection between the first winding part 1 and the second winding part 4. There is no need to make multiple turns and then weld. Just align and contact multiple first winding modules 3 and multiple second winding modules 6 one by one to complete the winding.
[0046] In some embodiments, the first connection end face 3121 of the first connecting tooth forms a first angle α with the radial face of the first winding part 1, and a first sawtooth 3121a is provided on the first connection end face 3121; the second connection end face 6121 of the second connecting tooth forms a second angle β with the radial face of the second winding part 4, and a second sawtooth 6121a that engages with the first sawtooth 3121a is provided on the second connection end face 6121; the first angle α and the second angle β form complementary angles.
[0047] Specifically, as Figure 4As shown, a first included angle α is formed between the first connection end face 3121 and the radial face of the first winding part 1. The specific angle of the first included angle α is not limited herein. The degree of the first included angle α can be 30°, 50°, 120°, etc. Here, the second included angle β formed between the second connection end face 6121 and the radial face of the second winding part 4 is not specifically limited either, and it can be set according to the degree of the first included angle α, as long as the first included angle α and the second included angle β form a complementary angle. For example, when the degree of the first included angle α is 30°, the degree of the second included angle β is 150°; when the degree of the first included angle α is 50°, the degree of the second included angle β is 130°, and so on. In addition, first sawteeth 3121a are provided on the first connection end face 3121, and second sawteeth 6121a are provided on the second connection end face 6121. The shapes of the first sawteeth 3121a and the second sawteeth 6121a are not limited herein, as long as the second sawteeth 6121a can be engaged with the first sawteeth 3121a. The first connection teeth and the second connection teeth are arranged in the above structure to make the connection between the first winding part 1 and the second winding part 4 more labor-saving.
[0048] In some embodiments, a connection convex part or a connection concave part is provided at one end of each first flat wire column 312 opposite to the first connection end 311, and a connection concave part or a connection convex part is provided at one end of each second flat wire column 612 opposite to the second connection end 611. The first flat wire column 312 and the corresponding second flat wire column 612 are movably connected through the connection convex part and the connection concave part.
[0049] Specifically, as Figure 1 shown, the connection between the first flat wire column 312 and the second flat wire column 612 can also be connected by a plug-in method. For example, a connection convex part or a connection concave part is provided at one end of the first flat wire column 312 opposite to the first connection end 311, and a connection concave part or a connection convex part is provided at one end of the second flat wire column 612 opposite to the second connection end 611. The specific shapes and sizes of the connection convex part and the connection concave part are not specifically limited herein, as long as the connection convex part and the connection concave part are adapted.
[0050] In some embodiments, the distance between two adjacent first winding modules 3 and the distance between two adjacent second winding modules 6 are both greater than or equal to 8 mm.
[0051] Specifically, as Figure 1 shown, the distance between two adjacent first winding modules 3 and the distance between two adjacent second winding modules 6 can be 8 mm, 9 mm, 11 mm, etc. Here, no specific limitation is made, and the distance between the first winding modules 3 is the same as the distance between the second winding modules 6.
[0052] Embodiment 2
[0053] Embodiment 2 of the present application provides a stator, which includes a winding structure and a stator core 7; multiple first winding modules 3 of the winding structure correspond one-to-one to multiple core slots 71 arranged at intervals along the circumference of the stator core 7, and the corresponding second winding modules 6 are movably connected to the core slots 71, so that the first coil 2 and the second coil 5 are respectively exposed at both ends of the stator core 7.
[0054] Specifically, if Figure 1 As shown, the specific size of the stator core 7 can be selected according to the size of the winding structure. The number of core slots 71 is the same as the number of the first winding module 3 and the second winding module 6. The size of the first coil 2 and the second coil 5 exposed at both ends of the stator core 7 can be set according to actual conditions, and no specific limitation is made here.
[0055] The second embodiment of the present application provides a stator having the same effect as the above winding structure.
[0056] In some embodiments, a side of each core slot 71 close to the inner circumferential wall of the stator core 7 is provided with an arc portion 711 .
[0057] Specifically, if Figure 5 As shown, each core slot 71 has an arc portion 711 on one side close to the inner circumferential wall of the stator core 7 . The arc portion 711 matches the shape of the first flat wire 31 and the second flat wire 61 , thereby improving the slot fill rate.
[0058] In some embodiments, an opening 712 is provided on a side of the core slot 71 opposite to the outer peripheral wall of the stator core 7 , and protrusions 7121 extending along the circumference of the stator core 7 are provided on opposite side walls of the opening 712 .
[0059] Specifically, if Figure 5 As shown, the length of the opening 712 extends along the axial direction of the core slot 71, and the side walls on both sides of the opening 712 are relatively provided with protrusions 7121 extending along the circumferential direction of the stator core 7. The protrusion 7121 can be a protrusion structure extending along the axial direction of the core slot 71 and integrated with the core slot 71, or it can be a plurality of protrusion structures arranged at intervals along the axial direction of the core slot 71. The protrusion 7121 is used to confine the first winding module 3 and the second winding module 6 in the core slot 71 to the core slot 71.
[0060] In addition, insulating paper is laid in the core slot 71, which adapts to the core slot 71 and covers the inner surface of the core slot 71. The insulating paper can effectively isolate the core slot 71 and the winding structure, preventing current short circuit and breakdown between the winding structure and the core slot 71.
[0061] Example 3
[0062] Embodiment 3 of the present application provides a motor, which includes a winding structure, a stator core 7 and a rotor; the multiple first winding modules 3 of the winding structure correspond one-to-one to the multiple core slots 71 arranged at intervals along the circumference of the stator core 7, and the corresponding second winding modules 6 are movably connected to the core slots 71, so that the first coil 2 and the second coil 5 are respectively exposed at the two ends of the stator core 7; the rotor is coaxial with the stator core 7 and is movably connected to the stator core 7.
[0063] Specifically, the motor described in the third embodiment can directly use the winding structure provided in the first embodiment and the stator provided in the second embodiment. For the specific implementation structure, please refer to the relevant contents described in the first and second embodiments, which will not be repeated here.
[0064] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.
Claims
1. A winding structure, characterized in that, Comprising: A first winding portion (1), which includes an annular first wire bundle (2), and a plurality of first winding modules (3) are provided at the top of the first wire bundle (2) at intervals along its circumference and extending axially; And A second winding portion (4), which includes an annular second wire bundle (5), and a plurality of second winding modules (6) are provided at the bottom of the second wire bundle (5) at intervals along its circumference and extending axially; Wherein, the plurality of first winding modules (3) and the plurality of second winding modules (6) correspond to each other one by one and are movably connected so that the second winding portion (4) is movably sleeved on the first winding portion (1) axially to form a loop-shaped winding structure.
2. The winding structure according to claim 1, wherein The first wire bundle (2) is a multi-layer annular structure formed by staggering and enclosing the first connection ends (311) of a plurality of first flat wires (31). Each first flat wire (31) includes two first flat wire columns (312) extending axially, and the first connection end (311) is arranged between the ends of the two first flat wire columns (312); Each layer of the first flat wire columns (312) in the multi-layer annular structure corresponds to the first flat wire columns (312) of other layers to form a plurality of first winding modules (3); The second wire bundle (5) is a multi-layer annular structure formed by staggering and enclosing the second connection ends (611) of a plurality of second flat wires (61). Each second flat wire (61) includes two second flat wire columns (612) extending axially, and the second connection end (611) is arranged between the ends of the two second flat wire columns (612); Each layer of the second flat wire columns (612) in the multi-layer annular structure corresponds to the second flat wire columns (612) of other layers to form a plurality of second winding modules (6).
3. The winding structure according to claim 2, wherein The heights of the plurality of first flat wire columns (312) of the first winding module (3) increase or decrease from the inside of the first wire bundle (2) to the outside to form a stepped shape; The heights of the plurality of second flat wire columns (612) of the second winding module (6) decrease or increase from the inside of the second wire bundle (5) to the outside to form a stepped shape adapted to the first winding module (3).
4. The winding structure according to claim 3, wherein A first connection tooth is provided at one end of each first flat wire column (312) opposite to the first connection end (311), a second connection tooth is provided at one end of each second flat wire column (612) opposite to the second connection end (611), and the first flat wire column (312) and the corresponding second flat wire column (612) are movably connected through the first connection tooth and the second connection tooth.
5. The winding structure according to claim 4, wherein The first connection end face (3121) of the first connection tooth forms a first angle (α) with the radial face of the first winding portion (1), and first saw teeth (3121a) are provided on the first connection end face (3121); The second connection end surface (6121) of the second connection tooth forms a second included angle (β) with the radial surface of the second winding portion (4), and the second connection end surface (6121) is provided with a second saw tooth (6121a) engaged with the first saw tooth (3121a); The first angle (α) and the second angle (β) form a complementary angle.
6. The winding structure according to claim 3, characterized in that Each of the first flat wire columns (312) is provided with a connecting protrusion or a connecting recess at an end opposite to the first connecting end (311), and each of the second flat wire columns (612) is provided with a connecting recess or a connecting protrusion at an end opposite to the second connecting end (611), and the first flat wire column (312) and the corresponding second flat wire column (612) are movably connected via the connecting protrusion and the connecting recess.
7. A stator, characterized in that, include: The winding structure according to any one of claims 1 to 6; A stator core (7), wherein a plurality of first winding modules (3) of the winding structure correspond one-to-one to a plurality of core slots (71) spaced apart along the circumference of the stator core (7), and the corresponding second winding modules (6) are movably connected in the core slots (71), so that the first coil (2) and the second coil (5) are respectively exposed at two ends of the stator core (7).
8. The stator according to claim 7, characterized in that An arc portion (711) is provided on a side of each core slot (71) close to the inner peripheral wall of the stator core (7).
9. The stator according to claim 8, characterized in that An opening (712) is provided on the side of the core slot (71) opposite to the outer peripheral wall of the stator core (7), and protrusions (7121) extending along the circumference of the stator core (7) are provided on both side walls of the opening (712).
10. A motor, characterized in that, include: The winding structure according to any one of claims 1 to 6; A stator core (7), wherein a plurality of first winding modules (3) of the winding structure correspond one-to-one to a plurality of core slots (71) spaced apart along the circumference of the stator core (7), and the corresponding second winding modules (6) are movably connected in the core slots (71), so that the first coil (2) and the second coil (5) are respectively exposed at two ends of the stator core (7); and The rotor is coaxial with the stator core (7) and movably connected to the stator core (7).