electric machine

Abstract

The application provides a motor, the motor comprises a flexible circuit member, each turn of the winding of the flexible circuit member comprises a first main body segment, a second main body segment, a first sub-connection segment, a second sub-connection segment, a third sub-connection segment and a fourth sub-connection segment, one end of the first sub-connection segment is electrically connected with the first main body segment, one end of the second sub-connection segment is electrically connected with the end of the first sub-connection segment away from the first main body segment, the other end of the second sub-connection segment is lower than the one end of the second sub-connection segment, one end of the third sub-connection segment is electrically connected with the second main body segment, one end of the fourth sub-connection segment is electrically connected with the end of the third sub-connection segment away from the second main body segment, the other end of the fourth sub-connection segment is lower than the one end of the fourth sub-connection segment, the height of the connection segment is reduced, so that the height of the flexible circuit member is reduced, and the size of the motor is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric machines, and particularly relates to an electric machine. BACKGROUND

[0002] Slotless electric machines are applied in fields requiring miniaturization and high performance, such as high-end equipment fields of robots and medical devices. In the related art, a flexible circuit is used as a winding of an electric machine, specifically, the flexible circuit is wound and formed, the flexible circuit is provided with a conductive layer, the conductive layer is provided with a winding, the winding includes a coil, the coil includes a straight line segment and an inclined line segment, the inclined line segment is located on both sides of the straight line segment, the length of the region where the inclined line segment is located is relatively long, and the height of the electric machine needs to be further reduced. SUMMARY

[0003] The present application provides an electric machine, which comprises a stator assembly and a rotor assembly, the stator assembly comprises a flexible circuit and a stator yoke, the flexible circuit is provided with a conductive layer, the flexible circuit comprises a winding, the winding is located on the conductive layer, the stator yoke is sleeved on the flexible circuit, the rotor assembly comprises a magnetic member and a rotor shaft, the magnetic member is connected with the rotor shaft, the flexible circuit is surrounded by the magnetic member, each turn of the winding comprises a main body segment and a first connecting segment, the main body segment comprises a first main body segment and a second main body segment, the first connecting segment comprises a first sub-connecting segment, a second sub-connecting segment, a third sub-connecting segment and a fourth sub-connecting segment, the first connecting segment is located on the same side of the main body segment, one end of the first sub-connecting segment is electrically connected with the first main body segment, one end of the second sub-connecting segment is electrically connected with an end of the first sub-connecting segment away from the first main body segment, the other end of the second sub-connecting segment is lower than the one end of the second sub-connecting segment, one end of the third sub-connecting segment is electrically connected with the second main body segment, one end of the fourth sub-connecting segment is electrically connected with an end of the third sub-connecting segment away from the second main body segment, and the other end of the fourth sub-connecting segment is lower than the one end of the fourth sub-connecting segment.

[0004] The motor comprises a flexible circuit member, the flexible circuit member has a conductive layer, the winding is located on the conductive layer, the stator yoke is sleeved on the flexible circuit member, each turn of the winding comprises a main body segment and a first connecting segment, the main body segment comprises a first main body segment and a second main body segment, the first connecting segment comprises a first sub-connecting segment, a second sub-connecting segment, a third sub-connecting segment and a fourth sub-connecting segment, the first connecting segment is located on the same side of the main body segment, one end of the first sub-connecting segment is electrically connected with the first main body segment, one end of the second sub-connecting segment is electrically connected with the end of the first sub-connecting segment away from the first main body segment, the other end of the second sub-connecting segment is lower than the one end of the second sub-connecting segment, one end of the third sub-connecting segment is electrically connected with the second main body segment, one end of the fourth sub-connecting segment is electrically connected with the end of the third sub-connecting segment away from the second main body segment, the other end of the fourth sub-connecting segment is lower than the one end of the fourth sub-connecting segment, the height of the connecting segment is reduced, thereby the height of the flexible circuit member is reduced, and the size of the motor is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0005] Figure 1 It is a schematic diagram of the three-dimensional structure of the stator assembly in the application;

[0006] Figure 2 It is a schematic diagram of the three-dimensional structure of the flexible circuit member in the application; Figure 1

[0007] Figure 3 It is a schematic diagram of the top view of the stator and rotor assembly in the application;

[0008] Figure 4 It is a schematic diagram of the sectional view of A-A in the application; Figure 3

[0009] Figure 5 It is a schematic diagram of the distribution of the three-phase winding in the application;

[0010] Figure 6 It is a schematic diagram of the three-dimensional structure of the first-phase winding in the application; Figure 5

[0011] Figure 7 It is a schematic diagram of the partial enlarged view of the B part in the application; Figure 5

[0012] Figure 8 It is a schematic diagram of the top view of the application; Figure 5

[0013] Figure 9 It is a schematic diagram of the front view of one of the windings in the application; Figure 5

[0014] Figure 10 It is a schematic diagram of one of the turns of the winding in the application; Figure 5

[0015] Figure 11 ​​​​​​​Fig. 2 is a plan view of a stator yoke according to the present application including 2 stator yoke portions, each of which has a central angle of 180°;

[0016] Figure 12 Fig. 3 is a plan view of a stator yoke according to the present application including 3 stator yoke portions, each of which has a central angle of 120°;

[0017] Figure 13 Fig. 4 is a plan view of a stator yoke according to the present application including 3 stator yoke portions, one of which has a central angle of 180°.

[0018] Reference Signs:

[0019] Stator yoke 1, stator yoke portion 11, first stator yoke portion 12, second stator yoke portion 13, third stator yoke portion 14,

[0020] Flexible circuit member 2, winding 21, first phase winding 211, second phase winding 212, third phase winding 213, first main body segment 221, second main body segment 222, first sub-connection segment 231, second sub-connection segment 232, third sub-connection segment 233, fourth sub-connection segment 234, first conductive connection portion 24, second conductive connection portion 25, third conductive connection portion 26, fifth sub-connection segment 271, sixth sub-connection segment 272, seventh sub-connection segment 273, eighth sub-connection segment 274, main body portion 281, first end portion 282, second end portion 283, magnetic member 3, rotor shaft 4. DETAILED DESCRIPTION

[0021] Reference Figures 4-10The motor comprises a stator assembly and a rotor assembly, the stator assembly comprises a flexible circuit 2 and a stator yoke 1, the flexible circuit 2 has a conductive layer, the flexible circuit 2 is provided with a winding 21 on the conductive layer, the stator yoke 1 is sleeved on the flexible circuit 2, the rotor assembly comprises a magnetic piece 3 and a rotor shaft 4, the magnetic piece 3 is connected with the rotor shaft 4, the flexible circuit 2 surrounds the magnetic piece 3, the winding 21 comprises a coil, each turn of the coil comprises a main body section and a first connecting section, the main body section comprises a first main body section 221 and a second main body section 222, the first connecting section comprises a first sub-connecting section 231, a second sub-connecting section 232, a third sub-connecting section 233 and a fourth sub-connecting section 234, the first connecting section is located on the same side of the main body section, one end of the first sub-connecting section 231 is electrically connected with the first main body section 221, one end of the second sub-connecting section 232 is electrically connected with the end of the first sub-connecting section 231 away from the first main body section 221, the other end of the second sub-connecting section 232 is lower than the one end of the second sub-connecting section 232, one end of the third sub-connecting section 233 is electrically connected with the second main body section 222, one end of the fourth sub-connecting section 234 is electrically connected with the end of the third sub-connecting section 233 away from the second main body section 222, the other end of the fourth sub-connecting section 234 is lower than the one end of the fourth sub-connecting section 234.

[0022] The motor comprises a flexible circuit 2, the flexible circuit 2 has a conductive layer, the flexible circuit 2 is provided with a winding 21 on the conductive layer, the stator yoke 1 is sleeved on the flexible circuit 2, the winding 21 comprises a coil, each turn of the coil comprises a main body section and a first connecting section, the main body section comprises a first main body section 221 and a second main body section 222, the first connecting section comprises a first sub-connecting section 231, a second sub-connecting section 232, a third sub-connecting section 233 and a fourth sub-connecting section 234, the first connecting section is located on the same side of the main body section, one end of the first sub-connecting section 231 is electrically connected with the first main body section 221, one end of the second sub-connecting section 232 is electrically connected with the end of the first sub-connecting section 231 away from the first main body section 221, the other end of the second sub-connecting section 232 is lower than the one end of the second sub-connecting section 232, one end of the third sub-connecting section 233 is electrically connected with the second main body section 222, one end of the fourth sub-connecting section 234 is electrically connected with the end of the third sub-connecting section 233 away from the second main body section 222, the other end of the fourth sub-connecting section 234 is lower than the one end of the fourth sub-connecting section 234, which is equivalent to continuously bending the connecting section, reduces the height of the connecting section, thereby reducing the height of the flexible circuit 2 and the size of the motor, and improving the efficiency of the motor.

[0023] The winding 21 is arranged on the flexible circuit 22, so that the radial thickness of the winding 21 is relatively thin compared with the thickness of the winding 21 formed by the enameled wire, and the heat dissipation is relatively better, and the scheme adopted can reduce the risk of coil misalignment, thereby improving the magnetic field balance and consistency.

[0024] The flexible circuit member 22 is formed by rolling the flexible circuit board, before rolling, the winding 21 is formed on the flexible substrate by etching or other processes, the flexible circuit member 22 is rolled to improve the uniformity of the magnetic gap between the stator and the rotor and improve the smoothness of the motor rotation.

[0025] The main body section includes a first main body section 221 and a second main body section 222, and the flexible circuit member 2 includes a substrate, the first main body section 221 and the second main body section 222 are located on both sides of the substrate, and the substrate 21 is made of polyimide or other high-temperature-resistant and good-insulating materials to prevent short circuit of the conductive layer on both sides of the substrate. The coil is arranged in the conductive layer, and the conductive layer has a protective effect on the coil. The manufacturing process of the flexible circuit member 22 can realize high-precision manufacturing of the coil through photolithography, etching and deposition technology.

[0026] After the flexible circuit member 2 is rolled, the conductive layer has a spiral shape, and in the radial direction of the rotor shaft 4, the conductive layer where the first main body section 221 is located is located on the outside of the conductive layer where the second main body section 222 is located; the conductive layer and the conductive layer are provided with a substrate or the like.

[0027] The conductive layer where the second sub-connection section 232 is located is located on the outside of the conductive layer where the first main body section 221 is located, and the conductive layer where the fourth sub-connection section 234 is located is located on the outside of the conductive layer where the first main body section 221 is located, or the conductive layer where the second sub-connection section 232 is located is located on the inside of the conductive layer where the second main body section 222 is located, and the conductive layer where the fourth sub-connection section 234 is located is located on the inside of the conductive layer where the second main body section 222 is located, reducing the thickness of the main body part below, reducing the size of the motor, reducing the air gap, increasing the air gap magnetic flux, and improving the efficiency of the motor.

[0028] The first sub-connection section 231 and the first main body section 221 are located in the same conductive layer, the third sub-connection section 233 and the second main body section 222 are located in the same conductive layer, the conductive layer where the second sub-connection section 232 is located is located on the inside of the conductive layer where the fourth sub-connection section 234 is located, or the conductive layer where the second sub-connection section 232 is located is located on the outside of the conductive layer where the fourth sub-connection section 234 is located, reducing the span of the wiring and reducing the thickness of the end of the flexible circuit member 2.

[0029] Reference Figure 9, the distance between the first sub-connection section 231 and the second sub-connection section 232 is L1, the distance between the second sub-connection section 232 and the fourth sub-connection section 234 is L2, the distance between the fourth sub-connection section 234 and the third sub-connection section 233 is L3, the distance between the first sub-connection section 231 and the third sub-connection section 233 is L4, L1=L3, L2=L4, 0≤L3-2L2≤0.0125mm, improve the uniformity of the wiring, the heat is uniformly conducted in the flexible circuit 2, avoid local overheating, improve the heat dissipation performance, after the flexible circuit 2 is coiled, further uniformly disperse the mechanical stress, reduce the risk of fracture or poor flatness.

[0030] Reference Figure 5 and Figures 9-10 , the flexible circuit 2 includes a first via, the flexible circuit 2 includes a first conductive connection part 24, the first conductive connection part 24 is at least partially located in the first via, one end of the first conductive connection part 24 is connected with the first sub-connection section 231, the other end of the first conductive connection part 24 is connected with the second sub-connection section 232; the flexible circuit 2 includes a second via, the flexible circuit 2 includes a second conductive connection part 25, the second conductive connection part 25 is at least partially located in the second via, one end of the second conductive connection part 25 is connected with the third sub-connection section 233, the other end of the second conductive connection part 25 is connected with the fourth sub-connection section 234, the first conductive connection part 24 and the second conductive connection part 25 are located at the same height, the end height is consistent, improve the density of the flexible circuit wiring.

[0031] The flexible circuit 2 includes a third via, the flexible circuit 2 includes a third conductive connection part 26, the third conductive connection part 26 is at least partially located in the third via, one end of the third conductive connection part 26 is connected with the end of the second sub-connection section 232 away from the first sub-connection section 231, the other end of the third conductive connection part 26 is connected with the end of the fourth sub-connection section 234 away from the third sub-connection section 233.

[0032] Of course, a plurality of connection sections similar to the first sub-connection section 231 and the second sub-connection section 232 can be provided between the second sub-connection section 232 and the fourth sub-connection section 234, and a plurality of first conductive connection parts 24, second conductive connection parts 25 and third conductive connection parts 26 are also provided, the first conductive connection part 24 and the second conductive connection part 25 are located at the same height, and a plurality of third conductive connection parts 26 are located at the same height, which will not be described here.

[0033] Reference Figure 10 , the angle between the first sub-connection section 231 and the second sub-connection section 232 is α1, the angle between the second sub-connection section 232 and the fourth sub-connection section 234 is α2, the angle between the third sub-connection section 233 and the fourth sub-connection section 234 is α3, α1=α2=α3, improve the balance of the magnetic flux of the coil, reduce the vibration noise.

[0034] Referring to Figures 5-10 , each turn of the coil comprises a second connecting section, the second connecting section comprises a fifth sub-connecting section 271, a sixth sub-connecting section 272, a seventh sub-connecting section 273 and an eighth sub-connecting section 274, the second connecting section is located on the side of the main body section away from the first connecting section, one end of the fifth sub-connecting section 271 is electrically connected with the first main body section 221, one end of the seventh sub-connecting section 273 is electrically connected with the second main body section 222, one end of the eighth sub-connecting section 274 is electrically connected with the end of the seventh sub-connecting section 273 away from the second main body section 222, the other end of the eighth sub-connecting section 274 is lower than the one end of the eighth sub-connecting section 274, one end of the sixth sub-connecting section 272 is electrically connected with the other end of the eighth sub-connecting section 274, the other end of the sixth sub-connecting section 272 is lower than the one end of the sixth sub-connecting section 272, the other end of the sixth sub-connecting section 272 is at the same height as the other end of the fifth sub-connecting section 271, the height of the flexible circuit 2 is further reduced, thereby further reducing the height of the motor, which will not be described here.

[0035] The main body section and the connecting section are both straight sections, and the main body section extends in the axial direction of the rotor shaft 4, which will not be described here.

[0036] Referring to Figures 5-8 , the winding 21 comprises a first phase winding 211, a second phase winding 212 and a third phase winding 213 arranged in the circumferential direction of the flexible circuit, the second main body section 222 of the first phase winding 211 overlaps the first main body section 221 of the second phase winding 212 adjacent thereto in the radial direction of the motor, and the second main body section 222 of the second phase winding 211 overlaps the first main body section 221 of the third phase winding 213 adjacent thereto in the radial direction of the motor, thereby improving the wiring density.

[0037] Referring to Figures 1-4 , the flexible circuit comprises a main body part 281, a first end part 282 and a second end part 283, the first end part 282 is sleeved on one end of the main body part 281, and the second end part 283 is sleeved on the other end of the main body part 281, the main body part 281 comprises a first conductive layer and a second conductive layer, the first main body section 221, the first sub-connecting section 231 and the fifth sub-connecting section 271 are located in the first conductive layer, the second main body section 222, the third sub-connecting section 233 and the seventh sub-connecting section 273 are located in the second conductive layer, the first end part 282 comprises a third conductive layer and a fourth conductive layer, the second sub-connecting section 232 is located in the third conductive layer, and the fourth sub-connecting section 234 is located in the fourth conductive layer, the second end part 283 comprises a fifth conductive layer and a sixth conductive layer, the sixth sub-connecting section 272 is located in the fifth conductive layer, and the eighth sub-connecting section 274 is located in the sixth conductive layer, thereby reducing the cost, reducing the radial size of the motor and reducing the air gap.

[0038] The first and second conductive layers are located on two sides of a substrate, the third and fourth conductive layers are located on two sides of another substrate, and the fifth and sixth conductive layers are located on two sides of a further substrate.

[0039] One end of the first end portion 282 is flush with one end of the main body portion 281, and the other end of the first end portion 282 is flush with an end surface of the main body portion adjacent to the first connecting portion. One end of the second end portion 283 is flush with the other end of the main body portion 281, and the other end of the second end portion 283 is flush with an end surface of the main body portion adjacent to the second connecting portion. This improves the magnetic field strength and improves the efficiency of the motor.

[0040] Of course, one of the first end portion 282 and the second end portion 283 can be located on the outside of the main body portion 281, and the other can be located on the inside of the main body portion 281. Details are not described here.

[0041] Reference Figures 1-4 The stator yoke 1 is sleeved on the main body portion 281, the first end portion 282 abuts against the upper end surface of the stator yoke 1, and the second end portion 283 abuts against the lower end surface of the stator yoke 1 (the fitting gap between the flexible circuit member 2 and the stator yoke 1 in the figure is only schematic, in order to better distinguish the two components and the relationship between the two components). This improves the reliability of the connection between the flexible circuit member 2 and the stator yoke 1, reduces the risk of short circuit caused by wear of the insulating layer, reduces the vibration of the stator assembly, reduces high-frequency whistling, makes the flexible circuit member 2 tightly adhere to the surface of the stator yoke 1, increases the contact area between the flexible circuit member 2 and the stator yoke 1, and improves heat conduction by taking advantage of the heat conduction of the stator yoke 1.

[0042] Reference Figure 1 and Figure 11 The stator yoke 1 includes n stator yoke portions 11, n≥2, n is an integer, and the n stator yoke portions 11 are arranged in the circumferential direction of the stator yoke. The central angle of each stator yoke portion 11 is α, and 0°<α≤180°. During assembly, the outer periphery of each stator yoke portion 11 can be fitted to the outer wall of the flexible circuit member 2, which reduces damage to the flexible circuit member 2 or reduces the roundness during assembly, reduces scratching of the glue during assembly, facilitates assembly of the flexible circuit member 2, and improves the reliability of the bonding between the flexible circuit member 2 and the stator yoke 1. The two side walls of the two stator yoke portions 11 are respectively abutted, and the two side walls of the two stator yoke portions 11 can be bonded by glue and / or welded.

[0043] Another structure of the stator yoke 1 is provided, and reference is made to Figure 12 The stator yoke 1 includes three stator yoke portions 11, and the central angle of each stator yoke portion 11 is 120°. One side wall of each stator yoke portion 11 is abutted with the side wall of one of the stator yoke portions 11, and the other side wall of each stator yoke portion 11 is abutted with the side wall of another of the stator yoke portions 11.

[0044] Another structure of the stator yoke 1 is provided, referring to Figure 13 The stator yoke 1 comprises a first stator yoke part 12, a second stator yoke part 13 and a third stator yoke part 14, the first stator yoke part 12 has a circular angle of 180°, the second stator yoke part 13 has a central angle of 90°, the third stator yoke part 14 has a central angle of 90°, one side wall of the second stator yoke part 13 is butted with one side wall of the first stator yoke part 12, one side wall of the third stator yoke part 14 is butted with another side wall of the first stator yoke part 12, another side wall of the second stator yoke part 13 is butted with another side wall of the third stator yoke part 14.

[0045] Of course, the number of the stator yoke parts 11 can be 4 / 5 / 6 / 7 / 8, etc., as long as the sum of the central angles is 360°, for example, the stator yoke 1 can comprise four stator yoke parts 11, each of which has a central angle of 90°, or the central angles are 60°, 60°, 120° and 120° respectively, one side wall of each stator yoke part 11 is butted with the side wall of one of the stator yoke parts 11, and the other side wall of each stator yoke part 11 is butted with the side wall of another of the stator yoke parts 11, which will not be described here.

[0046] Referring to Figure 1 The stator yoke 1 comprises a plurality of silicon steel sheets, the plurality of silicon steel sheets are stacked, the silicon steel sheets can be bonded by glue or welded, the silicon steel sheets are directly punched, the accuracy of the stator yoke 1 is improved, at the same time, the semicircular silicon steel sheets can be continuously punched, the generation of waste is reduced, thereby reducing the cost.

Claims

1. An electric motor, characterized in that, The motor includes a stator assembly and a rotor assembly. The stator assembly includes a flexible circuit element (2) and a stator yoke (1). The flexible circuit element (2) has a conductive layer and includes a winding (21) located on the conductive layer. The stator yoke (1) is sleeved on the flexible circuit element (2). The rotor assembly includes a magnetic element (3) and a rotor shaft (4). The magnetic element (3) is connected to the rotor shaft (4). The flexible circuit element (2) surrounds the magnetic element (3). Each turn of the winding (21) includes a main body segment and a first connecting segment. The main body segment includes a first main body segment (221) and a second main body segment (222). The first connecting segment includes a first sub-connecting segment (231), a second sub-connecting segment (232), a third sub-connecting segment (233), and a fourth sub-connecting segment (234). The first sub-connecting segment (231), the second sub-connecting segment (232), the first sub-connecting segment (233), the second sub-connecting segment (234), and the third sub-connecting segment (233) are connected in series. The first connecting segment (232), the third sub-connecting segment (233), and the fourth sub-connecting segment (234) are located on different conductive layers. The first connecting segment is located on the same side of the main body segment. One end of the first sub-connecting segment (231) is electrically connected to the first main body segment (221). One end of the second sub-connecting segment (232) is electrically connected to the end of the first sub-connecting segment (231) away from the first main body segment (221). The other end of the second sub-connecting segment (232) is lower than one end of the second sub-connecting segment (232). One end of the third sub-connecting segment (233) is electrically connected to the second main body segment (222). One end of the fourth sub-connecting segment (234) is electrically connected to the end of the third sub-connecting segment (233) away from the second main body segment (222). The other end of the fourth sub-connecting segment (234) is lower than one end of the fourth sub-connecting segment (234).

2. The motor according to claim 1, characterized in that, The conductive layer where the first main body segment (221) is located is located outside the conductive layer where the second main body segment (222) is located; The conductive layer where the second sub-connecting segment (232) is located is outside the conductive layer where the first main body segment (221) is located, and the conductive layer where the fourth sub-connecting segment (234) is located is outside the conductive layer where the first main body segment (221) is located, or the conductive layer where the second sub-connecting segment (232) is located is inside the conductive layer where the second main body segment (222) is located, and the conductive layer where the fourth sub-connecting segment (234) is located is inside the conductive layer where the second main body segment (222) is located; the first sub-connecting segment (231) and the first main body segment (221) are located on the same conductive layer, and the third sub-connecting segment (233) and the second main body segment (222) are located on the same conductive layer, and the conductive layer where the second sub-connecting segment (232) is located is inside the conductive layer where the fourth sub-connecting segment (234) is located, or the conductive layer where the second sub-connecting segment (232) is located is outside the conductive layer where the fourth sub-connecting segment (234) is located.

3. The motor according to claim 2, characterized in that, The distance between the first sub-connecting segment (231) and the second sub-connecting segment (232) is L1, the distance between the second sub-connecting segment (232) and the fourth sub-connecting segment (234) is L2, the distance between the fourth sub-connecting segment (234) and the third sub-connecting segment (233) is L3, and the distance between the first sub-connecting segment (231) and the third sub-connecting segment (233) is L4. L1=L3, L2=L4, 0≤L3-2L2≤0.0125mm.

4. The motor according to claim 3, characterized in that, The flexible circuit component (2) includes a first via and a first conductive connection portion (24). The first conductive connection portion (24) is at least partially located in the first via. One end of the first conductive connection portion (24) is connected to the first sub-connection segment (231), and the other end of the first conductive connection portion (24) is connected to the second sub-connection segment (232). The flexible circuit component (2) includes a second via and a second conductive connection portion (25). The second conductive connection portion (25) is at least partially located in the second via. One end of the second conductive connection portion (25) is connected to the third sub-connection segment (233), and the other end of the second conductive connection portion (25) is connected to the fourth sub-connection segment (234). The first conductive connection portion (24) and the second conductive connection portion (25) are at the same height.

5. The motor according to any one of claims 1-4, characterized in that, The angle between the first sub-connecting segment (231) and the second sub-connecting segment (232) is α1, the angle between the second sub-connecting segment (232) and the fourth sub-connecting segment (234) is α2, and the angle between the third sub-connecting segment (233) and the fourth sub-connecting segment (234) is α3, where α1=α2=α3.

6. The motor according to any one of claims 1-4, characterized in that, Each turn of the winding includes a second connecting segment, which includes a fifth sub-connecting segment (271), a sixth sub-connecting segment (272), a seventh sub-connecting segment (273), and an eighth sub-connecting segment (274). The second connecting segment is located on the side of the main body segment away from the first connecting segment. One end of the fifth sub-connecting segment (271) is electrically connected to the first main body segment (221), one end of the seventh sub-connecting segment (273) is electrically connected to the second main body segment (222), and one end of the eighth sub-connecting segment (274) is electrically connected to the first main body segment (221). The end of the seventh sub-connecting segment (273) away from the second main body segment (222) is electrically connected. The other end of the eighth sub-connecting segment (274) is lower than one end of the eighth sub-connecting segment (274). One end of the sixth sub-connecting segment (272) is electrically connected to the other end of the eighth sub-connecting segment (274). The other end of the sixth sub-connecting segment (272) is lower than one end of the sixth sub-connecting segment (272). The other end of the sixth sub-connecting segment (272) is at the same height as the other end of the fifth sub-connecting segment (271).

7. The motor according to claim 6, characterized in that, The winding (21) includes a first phase winding (211), a second phase winding (212) and a third phase winding (213) arranged circumferentially on the flexible circuit element (2). The second main body segment (222) of the first phase winding (211) and the first main body segment (221) of the adjacent second phase winding (212) overlap radially in the motor. The second main body segment (222) of the second phase winding (212) and the first main body segment (221) of the adjacent third phase winding (213) overlap radially in the motor.

8. The motor according to claim 6, characterized in that, The flexible circuit component includes a main body (281), a first end (282), and a second end (283). The first end (282) is sleeved on one end of the main body (281), and the second end (283) is sleeved on the other end of the main body (281). The main body (281) includes a first conductive layer and a second conductive layer. The first main body segment (221), the first sub-connecting segment (231), and the fifth sub-connecting segment (271) are located on the first conductive layer. The second main body segment (222), the third sub-connecting segment (233), and the seventh sub-connecting segment (273) are located on the second conductive layer. The first end (282) includes a third conductive layer and a fourth conductive layer. The second sub-connecting segment (232) is located on the third conductive layer, and the fourth sub-connecting segment (234) is located on the fourth conductive layer. The second end (283) includes a fifth conductive layer and a sixth conductive layer. The sixth sub-connecting segment (272) is located on the fifth conductive layer, and the eighth sub-connecting segment (274) is located on the sixth conductive layer.

9. The motor according to claim 8, characterized in that, One end of the first end (282) is flush with one end of the main body (281), and the other end of the first end (282) is flush with the end face of the main body segment adjacent to the first connecting segment. One end of the second end (283) is flush with the other end of the main body (281), and the other end of the second end (283) is flush with the end face of the main body segment adjacent to the second connecting segment.

10. The motor according to claim 9, characterized in that, The stator yoke (1) is sleeved on the main body (281), with the first end (282) abutting against the upper end face of the stator yoke (1) and the second end (283) abutting against the lower end face of the stator yoke (1).

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