Axial flux motor distributed winding structure and flux motor

Abstract

The application relates to an axial flux motor distributed winding structure, which comprises a copper wire winding, the copper wire winding comprises an outer layer winding, a middle layer winding and an inner layer winding; the middle part of the outer layer winding is bent to form an outer layer crown section, the outer layer crown section is formed with a first bending part and a second bending part; the middle layer winding is bent upwards to form a middle layer avoiding bending part, and the inner layer winding is bent upwards to form an inner layer avoiding bending part; the axial flux motor distributed winding structure is bent by a flat copper wire unit, the winding end height is reduced, the gap between the flat copper wires is increased, the situations that the inner circle circumference of the axial flux motor distributed winding stator core is small and cannot accommodate large-span winding, the end winding is densely intertwined, is easy to be stuck and scratched and insulated, and the like are effectively solved, the bent design solves the heat concentration caused by the densely intertwined inner circle winding, reduces the temperature rise risk, the special wire arrangement layout and space structure design improve the space utilization rate of the stator inner circle, and the winding end height is reduced.

Description

Technical Field

[0001] This invention relates to the field of flux motors, specifically to a distributed winding structure for an axial flux motor and a flux motor. Background Technology

[0002] An axial flux motor is a type of motor in which the magnetic field is parallel to the rotor axis. It converts electrical energy into mechanical energy based on the law of electromagnetic induction. With its significant advantages such as compact structure, small size, light weight, high power density, and excellent heat dissipation, axial flux motors have shown broad application prospects in high-tech fields such as new energy vehicles and aerospace.

[0003] However, due to the flat, disc-shaped structure of the stator in axial flux motors, the inner ring circumference is short and the slot spacing is narrow, making it difficult to accommodate large-span coils. Concentrated windings are typically used. Although the traditional concentrated winding manufacturing process is relatively simple, its high back EMF harmonic content, large torque ripple, and low winding factor lead to additional losses, exacerbating NVH problems and reducing control accuracy. Furthermore, concentrated windings have low effective air gap magnetic field utilization, often requiring increased current or permanent magnets to compensate for the output torque. Due to structural and manufacturing limitations, it is difficult to effectively suppress harmonics using short-slot windings, and it is extremely sensitive to pole-slot combinations, requiring specific combinations to avoid severe harmonics, resulting in insufficient design flexibility and difficulty in adapting to diverse application requirements. In contrast, distributed windings, by optimizing the magnetic field distribution, can significantly reduce harmonic losses and improve control performance, enabling the motor to operate efficiently and stably even near its speed limits, making it particularly suitable for high-speed applications. Actual test data shows that the torque ripple of the distributed winding is usually more than 50% lower than that of the concentrated winding, which significantly improves the stability of high-speed operation. Under high-speed conditions of 15,000 rpm, the permanent magnet eddy current loss caused by the distributed winding is lower than that of the concentrated winding, which effectively suppresses high-frequency eddy current loss and avoids high-speed overheating. Under rated conditions, the overall efficiency can usually be improved, and the advantages are more obvious in the high-speed range.

[0004] Despite the superior performance of distributed windings, their manufacturing process in axial flux motors is extremely complex, with the main bottleneck lying in the winding profile design. Due to the large span of the copper conductors within the stator slots, the insulation layer at bends is highly susceptible to stretching or compression, leading to cracks and subsequent insulation failure or inter-turn short circuits. For example, patent CN108768033A discloses a design and processing method for conventional radial motor flat copper wire forming windings, but this solution cannot solve the insulation problem inherent in axial flux motors with their large-span bends, nor can it meet their specific winding process requirements. Furthermore, patent CN109861427A proposes a spring-shaped coil structure for disc motors. This structure is formed by stamping or wire cutting a copper plate into a flat part, which is then bidirectionally bent to form a three-dimensional coil. However, this process is lengthy and complex, involving multiple steps such as high-precision stamping / laser cutting, multi-axis bending, nesting positioning, and laser welding. More importantly, severe stress concentration occurs at the bends of the copper plate, easily leading to cracking of the insulation coating.

[0005] Therefore, to solve the above problems, a distributed winding structure for an axial flux motor is needed. Summary of the Invention

[0006] The axial flux motor distributed winding structure of this invention, through a unique bending design of the flat copper wire units, allows the windings between layers to be arranged in an interleaved manner, reducing the height of the winding ends and increasing the gap between the flat copper wires. This effectively solves the problems of the small circumference of the inner ring of the stator core in the axial flux motor distributed winding, which cannot accommodate large-span windings, and the dense interweaving of the end windings, which is prone to jamming and scratching the insulation. The unique bending design effectively solves the problem of heat concentration caused by the dense interweaving of the inner ring windings, reducing the risk of temperature rise. Through a special wiring layout and spatial structure design, the space utilization rate of the stator inner ring is effectively improved, and the height of the winding ends is significantly reduced.

[0007] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0008] On one hand, an axial flux motor distributed winding structure includes a copper wire winding installed in conjunction with a stator core. The copper wire winding includes an outer layer winding, a middle layer winding, and an inner layer winding installed in conjunction with the stator core. The outer layer winding has an outer crown section formed by bending in the middle. The outer crown section has a first outer bend portion protruding outward along the axial direction of the stator core and a second outer bend portion protruding inward along the axial direction of the stator core. Adjacent outer layer windings are installed to avoid each other through the first and second outer bend portions. The middle layer winding has a middle layer avoidance bend portion formed by bending to avoid the outer layer winding. The inner layer winding has an inner layer avoidance bend portion formed by bending to avoid the middle layer winding.

[0009] Furthermore, the stator core is provided with core winding slots for installing copper wire windings, and the core winding slots are provided in multiple ways and are evenly distributed in the circumferential direction of the stator core.

[0010] Furthermore, the middle layer winding has a middle layer crown section, and a middle layer avoidance bend is disposed on the middle layer crown section. The middle layer crown section has a first middle layer bend that protrudes outward along the axial direction of the stator core and a second middle layer bend that protrudes inward along the axial direction of the stator core.

[0011] Furthermore, the outer crown segment and the middle crown segment are respectively formed with an outer crown end and a middle crown end, and the distance from the outer first bend portion to the outer crown end installed in the same iron core winding slot is less than the distance from the middle first bend portion to the middle crown end.

[0012] Furthermore, the inner winding has an inner crown section, and an inner avoidance bend is disposed on the inner crown section. The inner crown section has an inner first bend that protrudes outward along the axial direction of the stator core and an inner second bend that protrudes inward along the axial direction of the stator core. The inner second bend is formed between the inner first bend and the inner avoidance bend.

[0013] Furthermore, an inner crown end is formed on the inner crown segment, and the distance from the inner first bend to the inner crown end is greater than the distance from the middle first bend to the middle crown end.

[0014] Furthermore, the outer winding also includes a straight section and a welded section. The straight section is connected to the welded section and the outer crown section. The straight section is installed in conjunction with the slotted iron core winding.

[0015] Furthermore, the end of the welded section is bent outward along the axial direction of the stator core to form the outer welded section bending angle.

[0016] Furthermore, the ends of the middle layer winding and the inner layer winding are bent, and the welding section is arranged parallel to the ends of the middle layer winding and the inner layer winding.

[0017] On the other hand, a flux motor employs the aforementioned axial flux motor distributed winding structure.

[0018] The beneficial effects of this technical solution are:

[0019] The axial flux motor distributed winding structure of the present invention has the following technical advantages:

[0020] 1. The distributed winding design significantly optimizes the electromagnetic performance of the motor. In addition to the conventional advantages such as high torque density and high power density, the speed bottleneck of the axial flux motor is improved, which greatly enhances the motor's operating efficiency under high-speed conditions.

[0021] 2. Applying multi-layer distributed flat wire windings to axial flux motors, through specific wiring layout and spatial structure design, effectively improves the space utilization of the stator inner ring and significantly reduces the winding end height, which is conducive to the miniaturization design of the motor. The flat wire embedded installation process fundamentally avoids the technical defect of traditional radial motors that are prone to puncturing the insulation paper during the flat wire insertion process.

[0022] 3. This invention, through a unique bending design of the flat copper wire unit, allows the windings between layers to be arranged in an alternating manner, reducing the height of the winding ends and increasing the gap between the flat copper wires. This effectively solves the disadvantages of the axial flux motor distributed winding stator core with a small inner ring circumference that cannot accommodate large-span windings, and the dense interweaving of the end windings that makes them prone to jamming and scratching the insulation. The unique bending design effectively solves the problem of heat concentration caused by the dense interweaving of the inner ring windings, reducing the risk of temperature rise.

[0023] 4. This invention, through a unique bending design of the flat copper wire unit, can make the flat copper wires in the same layer have the same shape while ensuring that the flat copper wire unit has sufficient insulation gap, thereby reducing the motor production cost and process difficulty.

[0024] 5. The concentric lap winding scheme features shorter ends and lower copper loss. The winding pitch selection is highly flexible and can adapt to different electromagnetic design requirements. For three-phase outputs and star-point connections, round copper busbars are used instead of traditional flat wires, making the connection parts easier to form. This effectively reduces the complexity of the overall winding wire type, simplifies the production process, and reduces manufacturing costs. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall invention;

[0026] Figure 2 This is a schematic diagram of the outer winding of the present invention installed in slots in different iron core windings;

[0027] Figure 3 for Figure 2 Enlarged schematic diagram of the middle crown section;

[0028] Figure 4 This is a schematic diagram of the installation of different copper wire windings in the same iron core through slotting.

[0029] Figure 5 This is a schematic diagram of the explosion of the crown section of the copper wire winding of the present invention;

[0030] Figure 6 This is a schematic diagram of the installation of the outer winding and the middle winding of the present invention;

[0031] Figure 7 This is a schematic diagram of the installation of the middle layer winding and the inner layer winding in this invention;

[0032] Figure 8 This is a schematic diagram of the outer winding of the present invention;

[0033] Figure 9 This is a top view of the outer winding of the present invention;

[0034] Figure 10 This is a schematic diagram of the middle layer winding of the present invention;

[0035] Figure 11 This is a top view of the middle layer winding of the present invention;

[0036] Figure 12 This is a schematic diagram of the inner winding of the present invention;

[0037] Figure 13 This is a top view of the inner winding of the present invention;

[0038] Figure 14 This is a schematic diagram of the copper wire winding of the present invention;

[0039] Figure 15 This is a side view of the copper wire winding of the present invention;

[0040] Figure 16 This is a schematic diagram of the copper wire winding connection of the present invention;

[0041] Figure 17 This is a schematic diagram of the bridge wiring of the present invention.

[0042] The attached diagram lists the components represented by each number as follows:

[0043] 1-Stator core; 2-Copper wire winding; 3-Three-phase output; 4-Bridge connection; 5-Star copper busbar; 11-Axial oil hole; 12-Radial oil hole; 13-Locating pin hole; 14-Threaded hole; 21-Outer winding; 22-Middle winding; 23-Inner winding; 41-Bridge straight section; 42-Bridge connection section; 211-Welded section; 212-Straight section; 213-Outer crown section ; 221-Middle layer first bend; 222-Middle layer second bend; 223-Middle layer avoidance bend; 224-Middle layer welding bend; 231-Inner layer first bend; 232-Inner layer second bend; 233-Inner layer avoidance bend; 234-Inner layer welding bend; 2131-Outer layer first bend; 2132-Outer layer second bend; 2133-Outer layer welding bend. Detailed Implementation

[0044] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0045] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0046] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0047] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0048] like Figure 1-4 As shown in the embodiment of this application, a distributed winding structure for an axial flux motor includes a copper wire winding 2 installed in conjunction with a stator core 1. The copper wire winding 2 includes an outer winding 21, a middle winding 22, and an inner winding 23 installed in conjunction with the stator core 1. The outer winding 21 has an outer crown section 213 formed by bending in the middle. The outer crown section 213 has an outward protrusion along the axial direction of the stator core 1 (i.e., Figure 2 The outermost first bent portion 2131 (outward along the Z-axis) and the innermost portion (inward along the axial direction of the stator core) Figure 2 The outer second bend 2132 protrudes inward along the Z-axis, and the adjacent outer winding 21 is installed by avoiding the outer first bend 2131 and the outer second bend 2132; the middle winding 22 is bent to form a middle layer avoidance bend 223 to cooperate with the outer winding 21 for avoidance installation, and the inner winding 23 is bent to form an inner layer avoidance bend 233 to cooperate with the middle winding 22 for avoidance installation.

[0049] The axial flux motor distributed winding structure of this invention, through a unique bending design of the flat copper wire unit, allows the windings between layers to be arranged in an interlaced manner, reducing the height of the winding ends and increasing the gap between the flat copper wires. This effectively solves the problems of the small circumference of the inner ring of the stator core 1 of the axial flux motor distributed winding, which cannot accommodate large-span windings, and the dense interlacing of the end windings, which is prone to jamming and scratching the insulation. The unique bending design effectively solves the problem of heat concentration caused by the dense interlacing of the inner ring windings, reducing the risk of temperature rise. Through a special wiring layout and spatial structure design, the space utilization rate of the stator inner ring is effectively improved, and the height of the winding ends is significantly reduced.

[0050] In this embodiment, the stator core 1 is provided with a core winding slot for installing copper wire windings. The core winding slots are provided in multiple ways and are evenly distributed in the circumferential direction of the stator core 1.

[0051] like Figure 1-4 As shown, multiple core winding slots are evenly spaced on the stator core 1 to accommodate corresponding copper wire windings, such as... Figure 2 As shown, the same type of copper wire windings are installed in slots of different iron core windings. The outer first bend 2131 and outer second bend 2132 formed by bending the outer winding 21 are installed to avoid interference with adjacent outer windings 21. Multiple types of copper wire windings are also installed in the same iron core winding slot, such as... Figure 4 As shown, three types of copper wire windings are arranged in the same iron core winding slot, and the middle layer winding 22 is bent to form a middle layer avoidance bend 223, and the inner layer winding 23 is bent to form an inner layer avoidance bend 233, so as to cooperate with different types of copper wire windings for avoidance installation.

[0052] In this embodiment, the middle layer winding 22 has a middle layer crown section, and a middle layer avoidance bend 223 is disposed on the middle layer crown section. The middle layer crown section has a middle layer first bend 221 protruding outward along the axial direction of the stator core and a middle layer second bend 222 protruding inward along the axial direction of the stator core.

[0053] like Figure 6-7 , Figure 10 As shown, the middle layer winding 22 is bent at the middle position to form the middle layer crown section. The corresponding middle layer crown section is also bent multiple times to form multiple bent sections. The middle layer second bending part 222 is bent between the middle layer first bending part 221 and the middle layer avoidance bending part 223. Through the setting of the middle layer second bending part 222 and the middle layer first bending part 221, the middle layer winding 22 in the adjacent iron core winding slots can be effectively installed in an avoidance manner. At the same time, due to the setting of the middle layer avoidance bending part 223, the outer layer winding 21 is installed in an effective avoidance installation space.

[0054] In this embodiment, the outer crown segment 213 and the middle crown segment are respectively formed with an outer crown end and a middle crown end. The distance from the outer first bend 2131 installed in the same iron core winding slot to the outer crown end is less than the distance from the middle first bend 221 to the middle crown end.

[0055] like Figure 4 , 8 As shown in Figure -11, within the same iron core winding slot, the projected distance between the outer first bend 2131 and the outer crown end of different types of copper wire windings is less than the projected distance between the middle first bend 221 and the middle crown end (which can also be expressed as the distance L1 from the outer first bend 2131 to the left-hand slot of the iron core winding where it is installed being greater than the distance L3 from the middle first bend 221 to the left-hand slot of the iron core winding where it is installed). Correspondingly, the distance L2 from the outer second bend 2132 to the right-hand slot of the iron core winding where it is installed being greater than the distance L4 from the middle avoidance bend 223 to the right-hand slot of the iron core winding where it is installed being greater than the distance L4. This arrangement not only satisfies the avoidance installation of the same type of copper wire winding in different slots, but also satisfies the avoidance installation of different copper wire windings in the same slot, maximizing the utilization of installation space.

[0056] In this embodiment, the inner layer winding 23 has an inner layer crown section, and an inner layer avoidance bend 233 is disposed on the inner layer crown section. An inner layer first bend 231 protruding outward along the axial direction of the stator core and an inner layer second bend 232 protruding inward along the axial direction of the stator core are formed on the inner layer crown section. The inner layer second bend 232 is formed between the inner layer first bend 231 and the inner layer avoidance bend 233.

[0057] like Figure 4-13 As shown, the inner winding 23 also adopts a similar arrangement as the middle winding 22. The three different types of windings installed in the same slot have their protruding crown ends on the same straight line (basically on the same straight line, with a slight error allowed during installation). The inner winding 23 also achieves installation avoidance between the same type of winding through the first bend 231 and the inner second bend 232, and achieves installation avoidance between different windings through the setting of the inner avoidance bend 233.

[0058] In this embodiment, an inner crown end is formed on the inner crown segment, and the distance from the inner first bend 231 to the inner crown end is greater than the distance from the middle first bend 221 to the middle crown end.

[0059] like Figure 4-13As shown, to avoid interference between adjacent flat copper wire units on the same layer, the bending method of the middle layer copper wire winding unit differs from that of the outer layer copper wire winding unit. The bending angles are set differently, i.e., Q1 > Q3, Q2 > Q4; at the same time, the distance from the slot installation is also different. Specifically, the bending method of the inner layer copper wire winding unit is as follows: the bending angles are Q1 > Q3 > Q5, Q2 > Q4 > Q6; and the lengths from the slot after bending are L1 > L3 > L5, L2 > L4 > L6. Through this special bending method, adjacent flat copper wire units on the same layer can be staggered and evenly distributed without interference. In addition, this bending method can make the flat copper wire units on the same layer have the same wire shape, reducing production costs and process difficulty. This bending method avoids interference between different layers of flat copper wire windings, maximizes the use of the inner diameter space of the stator core, and significantly reduces the end height of the crown end, reducing end eddy current losses and enhancing the compactness of the motor structure.

[0060] In this embodiment, the outer winding 21 further includes a straight section 212 and a welded section 211. The straight section 212 is connected to the welded section 211 and the outer crown section 213. The straight section 212 is installed in conjunction with the iron core winding slot.

[0061] like Figure 2-4 As shown, the outer winding 21, the middle winding 22, and the inner winding 23 all adopt the same structural form. Taking the outer winding 21 as an example, the straight section 212 installed in the iron core winding slot, the welded section 211 extending out of the iron core winding slot, and the crown section 213 together constitute the outer winding 21.

[0062] In this embodiment, the end of the welding section is bent outward along the axial direction of the stator core to form an outer welding section bending angle. A single flat copper wire is combined with the straight section 212 and the crown section 213 to ensure that there is sufficient insulation gap between the flat copper wires, so as to avoid mutual compression when they are stacked in a staggered manner in the stator core 1, and to ensure good insulation and heat dissipation performance of the motor stator winding. The copper wire winding can be directly formed by traditional hard flat copper wire or round copper wire, and is embedded into the stator slot in a full-pitch or short-pitch manner according to the electromagnetic scheme. Multi-layer staggered stacking is adopted, and the layers do not overlap, maximizing the use of the stator inner and outer diameter space.

[0063] The stator core 1 has axial oil holes 11 and radial oil holes 12 respectively for oil spraying cooling of the winding. In addition, the stator core 1 is fixed to the outer casing by a positioning pin hole 13 and six threaded holes 14 in the axial direction, which facilitates precise control of the air gap between the stator and rotor when the motor assembly is assembled.

[0064] In this embodiment, the ends of the middle layer winding 22 and the inner layer winding 23 are both bent, and the welding section is arranged parallel to the ends of the middle layer winding and the inner layer winding.

[0065] like Figure 8-16 As shown, the welding sections of the outer layer winding 21, the middle layer winding 22, and the inner layer winding 23 are all bent. The bending angles of the welding sections of the three windings are the same, causing the overall shape of the welding end to deflect in the positive Z-axis direction, preventing the welding end from tilting upwards and avoiding interference with adjacent flat copper wire windings in the same layer. By changing the bending positions of bends 9, 10, and 11, the interference problem between different layers of the welding section can be solved. The starting position of the welding section bend is different from the stator core slot opening, i.e., L7 > L8 > L9, but the bending angles are all consistent (i.e., the bending angles of outer layer welding bends 21 and 23, middle layer welding bends 22 and 23 are the same, Q9=Q10=Q11). Through this bending design, the gap at the welding end bend can be increased while keeping the end height unchanged, thereby avoiding short circuits between winding turns.

[0066] This solution also includes a bridging wire 4, a star-shaped copper busbar 5, and a three-phase output line 3. The bridging wire 4 includes a bridging straight section 41 and a bridging connection section 42, which are used to connect the windings of each branch in series, helping to solve the problem of multiple parallel branches and complex end wiring in concentric lap windings. For the connection of the three-phase output line 3 and the star-shaped copper busbar 5, round copper busbars are used instead of traditional flat wires, making the connection parts easier to form and effectively reducing the complexity of the overall winding wire type.

[0067] On the other hand, a flux motor employs the aforementioned axial flux motor distributed winding structure.

[0068] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0069] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A distributed winding structure for an axial flux motor, characterized in that: The system includes a copper wire winding (2) installed in conjunction with the stator core (1). The copper wire winding (2) includes an outer winding (21), a middle winding (22), and an inner winding (23) installed in conjunction with the stator core (1). The outer winding (21) is bent in the middle to form an outer crown section (213). The outer crown section (213) has an outer first bend (2131) that protrudes outward along the axial direction of the stator core (1) and a section that protrudes outward along the axial direction of the stator core (1). The outer second bend (2132) protrudes inward, and the adjacent outer winding (21) is installed by avoiding the outer first bend (2131) and the outer second bend (2132); the middle winding (22) is bent to form a middle layer avoidance bend (223) to avoid the outer winding (21), and the inner winding (23) is bent to form an inner layer avoidance bend (233) to avoid the middle winding (21).

2. The axial flux motor distributed winding structure of claim 1, wherein: The stator core (1) is provided with a core winding slot for installing copper wire winding (2), and the core winding slot is provided in multiple ways and the multiple core winding slots are evenly distributed in the circumferential direction of the stator core (1).

3. The axial flux motor distributed winding structure of claim 2, wherein: The middle layer winding (22) has a middle layer crown section, and a middle layer avoidance bend (223) is provided on the middle layer crown section. The middle layer crown section has a middle layer first bend (221) protruding outward along the axial direction of the stator core (1) and a middle layer second bend (222) protruding inward along the axial direction of the stator core (1).

4. The axial flux motor distributed winding structure of claim 3, wherein: The outer crown section and the middle crown section are respectively formed with an outer crown end and a middle crown end. The distance from the outer first bend (2131) installed in the same iron core winding slot to the outer crown end is less than the distance from the middle first bend (221) to the middle crown end.

5. The axial flux motor distributed winding structure of claim 4, wherein: The inner winding (23) has an inner crown section, and an inner avoidance bend (233) is disposed on the inner crown section. The inner crown section has an inner first bend (231) protruding outward along the axial direction of the stator core (1) and an inner second bend (232) protruding inward along the axial direction of the stator core (1). The inner second bend (232) is formed between the inner first bend (231) and the inner avoidance bend (233).

6. The axial flux motor distributed winding structure of claim 5, wherein: An inner crown end is formed on the inner crown segment, and the distance from the inner first bend (231) to the inner crown end is greater than the distance from the middle first bend (221) to the middle crown end.

7. The axial flux motor distributed winding structure of claim 2, wherein: The outer winding (21) also includes a straight section (212) and a welded section (211). The straight section (212) is connected to the welded section (211) and the outer crown section (213). The straight section (212) is installed in conjunction with the iron core winding slot.

8. The axial flux motor distributed winding structure of claim 7, wherein: The end of the welded section (211) is bent outward along the axial direction of the stator core (1) to form the outer welded section bending angle.

9. The distributed winding structure of the axial flux motor according to claim 8, characterized in that: The ends of the middle layer winding (22) and the inner layer winding (23) are bent, and the ends of the welding section are arranged parallel to the ends of the middle layer winding and the inner layer winding.

10. A flux motor characterized by: An axial flux motor distributed winding structure as claimed in any one of claims 1 to 9.

Images