Continuous winding assembly

Abstract

The present invention relates to a continuous winding assembly, and more particularly, to a continuous winding assembly for winding on a motor stator. The continuous winding assembly of the present invention can simplify a coil forming process by using continuous wires having a standard pitch, minimize errors caused by erroneous processing or the like, and reduce the overall size of a stator by including a terminal portion connecting each continuous wire having a standard pitch along a shortest possible path.

Description

Technical Field

[0001] The present invention relates to a continuous winding assembly, and more specifically, to a continuous winding assembly for winding on a motor stator. Background Technology

[0002] In motor winding design, the phase of the magnetomotive force (MMF) in each slot and the difference in inductance in each layer occur, and these factors pose a key challenge in maintaining MMF balance in parallel windings. The MMF phase of each slot is determined by dividing 360 degrees by the number of slots per pole. For example, when the total number of slots is 72 and the number of poles is 8, the MMF phase can be 40 degrees. This forms a repeating pattern for each group of slots corresponding to the respective pole. In this case, the number of slots corresponding to one pole (72 / 8), i.e., 9 slots, is called the standard pitch. However, conventional techniques have limitations in achieving MMF balance in parallel circuits using only the standard pitch, and to overcome this, winding patterns that combine standard and non-standard pitches have been applied.

[0003] In conventional continuous hairpin winding methods, braiding and non-standard pitch are used to adjust the amplitude and phase of the MMF in parallel windings, resulting in each parallel winding requiring a different winding pattern. For example, conventional windings need to follow a repeating pattern such as 10-10-7-10-10-7-9, or alternatively, a repeating pattern such as 10-7-10-10-7-10-9, resulting in each winding requiring a different winding configuration.

[0004] This method requires complex patterns for all windings that make up the parallel circuit, and the coil forming process is performed inefficiently due to the increased diversity of winding types. More specifically, the continuous hairpin winding process begins with the coil forming (bending) step, followed by lamination, crimping, winding, insertion, slot wedge insertion, compaction, peeling, and welding. In conventional techniques, the complex winding pattern requires six forming machines in this process, leading to manufacturing inefficiency. Furthermore, the complex pattern increases the likelihood of errors and defects in subsequent processes. As a result, conventional techniques lead to both complexity and inefficiency in the design and manufacturing processes when achieving MMF balance in parallel windings.

[0005] Related technical documents

[0006] (Patent Document 1) Korean Patent Publication 10-2021-0031762, "Method for Weaving Windings of Electromechanical Components" Summary of the Invention

[0007] The present invention has been conceived to solve the above-mentioned problems, and the object of the present invention is to provide a continuous winding assembly that simplifies the coil forming process and minimizes errors caused by operational mistakes by using continuous windings with standard pitch.

[0008] Another object of the present invention is to provide a continuous winding assembly that minimizes the overall size of the stator by including terminal portions of continuous windings with standard pitch connected along the shortest path.

[0009] To achieve the above objectives, a continuous winding assembly according to an embodiment of the present invention is applied to a stator comprising predetermined slot groups adjacent to and arranged in continuous positions with respect to the poles of the rotor, wherein each rotor pole corresponds to one slot group. The continuous winding assembly comprises: a first winding portion comprising a plurality of conductors having a standard pitch that continuously pass through the plurality of slot groups, wherein each slot group corresponds to one conductor; a second winding portion comprising a plurality of conductors having a standard pitch that continuously pass through the plurality of slot groups, wherein each slot group corresponds to one conductor, the conductors being stacked on the outside of the slots relative to the conductors of the first winding portion; and a terminal portion electrically connected to at least two of the conductors included in the first winding portion and the second winding portion.

[0010] Furthermore, each conductor of the first winding portion is wound twice around the outer periphery of the stator, and the layers of conductors stacked in the slot are defined from the innermost side of the slot as a first layer, a second layer, a third layer, a fourth layer, a fifth layer, and a sixth layer. The first winding portion includes a first-1 conductor wound in the first and third layers and a first-2 conductor wound in the second and fourth layers at a position opposite to the first-1 conductor relative to the axis of the stator.

[0011] In addition, each wire of the second winding section is wound once around the outer periphery of the stator, and the second winding section includes the 2-1 wire wound in the fifth layer and the 2-2 wire wound in the sixth layer.

[0012] In addition, the terminal portion includes a first terminal, which includes a plurality of connecting portions, one end of which is connected to a first-1 wire or a first-2 wire, and the other end of which is connected to a second-1 wire or a second-2 wire. Each of the connecting portions includes a first end connected to the first-1 wire or the first-2 wire, a second end connected to the second-1 wire or the second-2 wire, and a connecting member connecting the first end and the second end.

[0013] Furthermore, the first terminal includes a first connecting portion and a second connecting portion. In the first connecting portion, the connecting member extends to a length greater than the standard pitch. In the second connecting portion, the connecting member extends to a length equal to or less than the standard pitch. The extension lengths of the first end and the second end of the first connecting portion are longer than the extension lengths of the first end and the second end of the second connecting portion.

[0014] Furthermore, the two ends of the 2-1 wire and the 2-2 wire extend outward along their respective extension directions, and the terminal portion includes a second terminal, which includes a plurality of third connection portions, each third connection portion having one end connected to the 2-1 wire and the other end connected to the 2-2 wire.

[0015] Furthermore, both ends of the 2-1 conductor extend outward along its extension direction, one end of the 2-2 conductor extends outward along its extension direction, and the other end of the 2-2 conductor extends inward along its extension direction.

[0016] Furthermore, the ends of wires 2-1 and 2-2 are directly connected to each other.

[0017] Furthermore, the 2-1 wire and the 2-2 wire are integrally formed and extend in the same direction along the circumferential direction of the motor.

[0018] Furthermore, the 2-1 wire and the 2-2 wire are integrally formed and extend in opposite directions along the circumferential direction of the motor. Attached Figure Description

[0019] Figure 1 This is a plan view showing a stator wound using the continuous winding assembly of the present invention;

[0020] Figure 2 This is a schematic diagram showing the conductors of the first winding portion and the second winding portion of a continuous winding assembly according to a first embodiment of the present invention;

[0021] Figure 3 This is a partial plan view showing the layers of the groove of the present invention;

[0022] Figure 4 A table illustrating the winding position of the first conductor of the first winding portion of the present invention is shown;

[0023] Figure 5 A table illustrating the winding positions of the first and second conductors of the first winding portion according to the present invention is shown;

[0024] Figure 6 A table illustrating the winding position of the second-1 conductor of the second winding portion according to the present invention is shown;

[0025] Figure 7This is a table showing the winding positions of the 2-2 conductor of the second winding portion according to the present invention;

[0026] Figure 8 This is a schematic diagram showing the connection relationship between the first winding portion and the second winding portion of a continuous winding assembly according to a first embodiment of the present invention;

[0027] Figure 9 This is a partial perspective view showing the terminal shapes of the first winding portion and the second winding portion of a continuous winding assembly according to a first embodiment of the present invention;

[0028] Figure 10 This is a schematic diagram showing the first connecting portion of the first terminal according to the present invention;

[0029] Figure 11 This is a schematic diagram showing the second connection portion of the first terminal according to the present invention;

[0030] Figure 12 This is a partial perspective view showing the terminal shape of the second winding portion of a continuous winding assembly according to a first embodiment of the present invention;

[0031] Figure 13 This is a schematic diagram showing the conductors of the first winding portion and the second winding portion of a continuous winding assembly according to a second embodiment of the present invention;

[0032] Figure 14 This is a partial perspective view showing the terminal shape of the second winding portion of a continuous winding assembly according to a second embodiment of the present invention;

[0033] Figure 15 This is a schematic diagram illustrating the connection relationship between the first winding portion and the second winding portion of a continuous winding assembly according to the third and fourth embodiments of the present invention;

[0034] Figure 16 This is a schematic diagram showing the conductors of the first and second winding portions of a continuous winding assembly according to a third embodiment of the present invention.

[0035] Explanation of reference numerals in the attached figures

[0036] 1000: Continuous winding assembly

[0037] 100: First winding section

[0038] 110: Wire No. 1-1

[0039] 120: Wires 1-2

[0040] 200: Second winding section

[0041] 210: Wire No. 2-1

[0042] 220: Wire No. 2-2

[0043] 300: Terminal section

[0044] 310: First terminal

[0045] 311: First End

[0046] 312: Second end

[0047] 313: Connecting components

[0048] 314: First connecting part

[0049] 315: Second connecting part

[0050] La: First layer

[0051] Lb: Second layer

[0052] Lc: Third layer

[0053] Ld: Fourth layer

[0054] Le: Fifth Floor

[0055] Lf: Sixth layer

[0056] St: Stator

[0057] Sl: slot Detailed Implementation

[0058] The technical aspects of the invention will be described in more detail below with reference to the accompanying drawings. Prior to this, the terms and words used in the specification and claims should not be construed as limiting in their ordinary or dictionary sense, but should be interpreted based on the meaning and conception consistent with the technical idea of ​​the invention, as the inventors could appropriately define the terms to best describe the principles of their invention.

[0059] In the following text, reference will be made to Figures 1 to 3 The basic configuration of the continuous winding assembly 1000 of the present invention is described.

[0060] like Figure 1 As shown, the continuous winding assembly 1000 of the present invention can be applied to a stator St, which includes predetermined slot groups Sg disposed adjacent to the poles of the rotor at continuous positions, wherein each pole of the rotor corresponds to one slot group Sg. More specifically, the stator St of a motor using the continuous winding assembly 1000 of the present invention can be of an 8-pole, 72-slot, 6-layer type. The continuous winding assembly 1000 of the present invention may include a first winding portion 100 and a second winding portion 200 connected to each other to form a series circuit.

[0061] More specifically, the first winding portion 100 may include multiple conductors with a standard pitch of 9, continuously passing through multiple slot groups Sg, wherein each slot group Sg corresponds to one conductor. The second winding portion 200 may also include multiple conductors with a standard pitch, said multiple conductors being stacked relative to the conductors of the first winding portion 100 on the outermost side of slot Sl and continuously passing through multiple slot groups Sg, wherein each slot group Sg corresponds to one conductor. Figure 2 As shown, the conductors of the first winding portion 100 and the conductors of the second winding portion 200 may each be formed with a standard pitch, and the continuous winding assembly 1000 of the present invention may include a terminal portion 300 that electrically connects at least two conductors among the conductors in the first winding portion 100 and the second winding portion 200. The specific shape of the terminal portion 300 will be described later with reference to the accompanying drawings.

[0062] More specifically, such as Figure 3 As shown, the layers of wires stacked in a single slot Sl can be distinguished from the innermost side of slot Sl into a first layer La, a second layer Lb, a third layer Lc, a fourth layer Ld, a fifth layer Le, and a sixth layer Lf. Each wire of the first winding portion 100 can be wound twice around the outer periphery of the stator St, and more specifically, the first winding portion 100 may include a first-1 wire 110 wound in the first layer La and the third layer Lc, and a first-2 wire 120 wound in the second layer Lb and the fourth layer Ld, positioned relative to the motor axis and positioned opposite to the first-1 wire 110. Furthermore, each wire of the second winding portion 200 can be wound once around the outer periphery of the stator St, and the second winding portion 200 may include a second-1 wire 210 wound in the fifth layer Le and a second-2 wire 220 wound in the sixth layer Lf.

[0063] In the following text, reference will be made to Figures 4 to 7 A more detailed description of the winding arrangement of the first winding portion 100 and the second winding portion 200 of the present invention is given.

[0064] Figures 4 to 7 This is a table showing the entry and exit positions of the wires, where Figure 4 The wires numbered 1 to 9 correspond to the first-1 wire 110 of the first winding section 100. Figure 5 The wires numbered 10 to 18 correspond to the first and second wires 120 of the first winding section 100. Figure 6 The conductors numbered 19 to 27 correspond to the 2-1 conductor 210 of the second winding section 200, and Figure 7 The conductors numbered 28 to 36 correspond to conductor 220 of the second winding section 200.

[0065] like Figure 4As shown, the first-1 conductor 110 of the first winding portion 100 can be continuously inserted with the same phase. A segment can be initially inserted into the first layer La of slots S1 1 to 9 adjacent to a pole, then retracted by jumping to the first layer La of slots S1 10 to 18 adjacent to the next pole, and subsequently inserted by jumping to the first layer La of slots S1 19 to 27 adjacent to the following pole, wherein this pattern is repeated until slots S1 64 to 72, after which the winding can continue into the third layer Lc and be wound again. This repetition can continue until the end retracts from the third layer Lc of slots S1 64 to 72.

[0066] In addition, such as Figure 5 As shown, the first-second conductors 120 of the first winding portion 100 can also be inserted continuously with the same phase, and the first-second conductors 120 can be formed with a phase opposite to that of the first-first conductor 110. More specifically, segments of the first-second conductors 120 can be initially inserted into the second layer Lb of slots S1 10 to 18 adjacent to a pole, then retracted by jumping to the second layer Lb of slots S1 19 to 27 adjacent to the next pole, and subsequently inserted by jumping to the second layer Lb of slots S1 28 to 36 adjacent to the next pole, wherein this pattern is repeated until slots S1 to 9, after which the winding can continue into the fourth layer Ld and be wound again. This repetition can continue until the end retracts from the fourth layer Ld of slots S1 to 9.

[0067] like Figure 6 As shown, the second-1 conductor 210 of the second winding portion 200 can be continuously inserted in the same phase and can be wound only in the fifth layer Le. More specifically, a segment of the second-1 conductor 210 can be initially inserted into the fifth layer Le of slots S1 1 to 9 adjacent to a pole, then retracted by jumping to the fifth layer Le of slots S1 10 to 18 adjacent to the next pole, and subsequently inserted by jumping to the fifth layer Le of slots S1 19 to 27 adjacent to the subsequent pole, wherein the pattern is repeated until slots S1 64 to 72, where the end retracts from the fifth layer Le.

[0068] like Figure 7As shown, the second-2 conductor 220 of the second winding portion 200 can be continuously inserted in the same phase and can be wound only in the sixth layer Lf. More specifically, a segment of the second-2 conductor 220 can be initially inserted into the sixth layer Lf of slots Sl 1 to 9 adjacent to a pole, then retracted by jumping to the sixth layer Lf of slots Sl 10 to 18 adjacent to the next pole, and subsequently inserted by jumping to the sixth layer Lf of slots Sl 19 to 27 adjacent to the subsequent pole, wherein this pattern is repeated until slots Sl 64 to 72, where the end retracts from the sixth layer Lf.

[0069] In the following text, reference will be made to Figures 8 to 14 A more detailed description of the continuous winding assembly 1000 according to the first and second embodiments of the present invention is given.

[0070] As described above, in the continuous winding assembly 1000 according to the first embodiment of the present invention, the first-1 conductor 110 and the first-2 conductor 120 are formed by alternating portions and jumper portions having a standard pitch. The alternating portions extend axially along the motor to insert into slots S1, and the sum of the pitches of the jumper portions is 135 (=72 (total number of slots S1) × 2 to 9). Therefore, the first-1 conductor 110 and the first-2 conductor 120 can be wound around the outer periphery of the stator St twice. Here, the second-1 conductor 210 can be formed with the same shape as the first-1 conductor 110 and the first-2 conductor 120, except that the sum of the pitches of its jumper portions can be 64 (=72 (total number of slots S1) - 9). The second-2 conductor 220 can also be formed with the same shape as the second-1 conductor 210. Therefore, the second-1 conductor 210 and the second-2 conductor 220 can be wound around the outer periphery of the stator St only once.

[0071] like Figure 8As shown, conductor 110 can be connected to conductor 210, conductor 120 can be connected to conductor 220, and conductor 210 and conductor 220 can be connected to each other to form an electrical connection. Here, conductors of the same phase can be connected. For example, the first conductor of conductor 110 (arranged four times in the first layer La with a 0° MMF phase and four times in the third layer Lc with a 0° MMF phase) can be connected to the 20th conductor of conductor 210 (arranged four times in the fifth layer Le with a 40° MMF phase), and the 12th conductor of conductor 120 (arranged four times in the second layer Lb with an 80° MMF phase and four times in the fourth layer Ld with an 80° MMF phase) can be connected to the 29th conductor of conductor 220 (arranged four times in the sixth layer Lf with a 40° MMF phase), while conductors 20 and 29 can also be connected to each other. Therefore, a series circuit can be formed in the order of conductor 110, conductor 210, conductor 220, and conductor 120, thereby achieving both MMF balance and inductance balance.

[0072] More specifically, such as Figure 9 As shown, since the layers of the winding portions of the conductors in the first winding portion 100 and the second winding portion 200 are different, a certain radial spacing may occur. Therefore, the terminal portion 300 of the continuous winding assembly 1000 of the present invention may include a first terminal 310 connecting the conductors of the first winding portion 100 and the second winding portion 200. More specifically, the first terminal 310 may include a plurality of connecting portions, each connecting portion having one end connected to the first-1 conductor 110 or the first-2 conductor 120 and the other end connected to the second-1 conductor 210 or the second-2 conductor 220. Each connecting portion may include a first end 311 connected to the first-1 conductor 110 or the first-2 conductor 120, a second end 312 connected to the second-1 conductor 210 or the second-2 conductor 220, and a connecting member 313 connecting the first end 311 and the second end 312.

[0073] Here, as Figure 10 As shown, the first terminal 310 may be one of the connecting portions and may include a first connecting portion 314, wherein the length of the connecting member 313 extends beyond the standard pitch. Furthermore, as... Figure 11 As shown, the second terminal 320 may be one of the connecting portions and may include a second connecting portion 315, wherein the length of the connecting member 313 extends to a length equal to or less than the standard pitch. The extension length d1 of the first end 311 and the second end 312 of the first connecting portion 314 may be formed to be longer than the extension length d2 of the first end 311 and the second end 312 of the second connecting portion 315.

[0074] Furthermore, based on the above conductor arrangement, such as Figure 2 As shown, the two ends of the second-1 conductor 210 and the two ends of the second-2 conductor 220 can be bent and extended outward in their respective extension directions (circumferential directions), thereby allowing the ends of the second-1 conductor 210 and the second-2 conductor 220 to... Figure 12 The arrangement is shown. Terminal portion 300 may include a second terminal 320 that electrically connects the second-1 wire 210 and the second-2 wire 220, and the second terminal 320 may include a plurality of third connection portions (not shown). More specifically, each third connection portion (not shown) may have one end connected to the second-1 wire 210 and the other end connected to the second-2 wire 220.

[0075] In addition, such as Figure 13 As shown, in the continuous winding assembly 1000 according to the second embodiment of the present invention, the first winding portion 100 and the first terminal 310 can be formed in the same manner as in the first embodiment described above, and the second winding portion 200 can be formed such that both ends of the second-1 conductor 210 are bent outward and extend according to their respective extending directions, one end of the second-2 conductor 220 extends outward along its extending direction, and the other end of the second-2 conductor 220 is bent inward along its extending direction. Therefore, as Figure 14 As shown, the second-1 wire 210 and the second-2 wire 220 can be directly connected by contacting and soldering each other without the second terminal 320.

[0076] In the following text, reference will be made to Figures 15 to 16 A more detailed description of the continuous winding assembly 1000 according to the third and fourth embodiments of the present invention is given.

[0077] In the continuous winding assembly 1000 according to the third and fourth embodiments of the present invention, the first winding portion 100 and the first terminal 310 can be formed in the same manner as in the first and second embodiments described above, and the second winding portion 200 can be formed as a single conductor, such as... Figure 14 As shown. That is to say, the second-1 conductor 210 and the second-2 conductor 220 can be integrally formed (corresponding to...). Figure 15 (Wires 19 to 27 in the middle).

[0078] More specifically, in such Figure 16In the continuous winding assembly 1000 according to the third embodiment shown, the second-1 wire 210 and the second-2 wire 220 can be integrally formed. The second-1 wire 210 and the second-2 wire 220 can be connected to each other and extend in the same direction along the circumferential direction of the motor. Therefore, the welding and connection process of the second-1 wire 210 and the second-2 wire 220 becomes unnecessary, thereby improving process efficiency. Furthermore, the end of the second-2 wire 220 portion (i.e., the portion wound in the sixth layer Lf) can be bent inward based on the extension direction. As a result, the extension length of the connecting member 313 connecting the first terminal 310 to the first winding portion 100 and the second winding portion 200 can be shortened.

[0079] Furthermore, in the continuous winding assembly 1000 according to the fourth embodiment, the second-1 wire 210 and the second-2 wire 220 can be integrally formed and preferably extend in opposite directions along the circumferential direction of the motor. Therefore, the welding and connection processes of the second-1 wire 210 and the second-2 wire 220 become unnecessary, thereby improving process efficiency. Furthermore, the end of the second-2 wire 220 portion (i.e., the portion wound in the sixth layer Lf) can be bent inward based on the extension direction. As a result, the extension length of the connecting member 313 connecting the first terminal 310 to the first winding portion 100 and the second winding portion 200 can be shortened.

[0080] The continuous winding assembly of the present invention with the above configuration is advantageous in simplifying the coil forming process and minimizing errors caused by operational mistakes by using continuous windings with standard pitch.

[0081] The continuous winding assembly of the present invention also benefits from minimizing the overall size of the stator by including terminal portions of continuous windings with standard pitch connected along the shortest path.

[0082] The technical concept of this invention should not be interpreted solely based on the above-described embodiments. It should be understood that various modifications and alterations are possible within the scope of the claims without departing from the essence of the invention as claimed. Therefore, any improvements and modifications that are obvious to those skilled in the art fall within the scope of protection of this invention.

[0083] Cross-reference to related applications

[0084] This application claims priority to Korean Patent Application No. 10-2024-0125577, filed on September 13, 2024, and Korean Patent Application No. 10-2025-0008479, filed on January 21, 2025, the entire contents of which are incorporated herein by reference for all purposes.

Claims

1. A continuous winding assembly applied to a stator, the stator including slots having a plurality of slot groups, the plurality of slot groups being configured adjacent to poles of a rotor and arranged in consecutive positions, wherein each pole of the rotor corresponds to one of the plurality of slot groups, the continuous winding assembly comprising: The first winding portion includes a plurality of first conductors having a standard pitch, the plurality of first conductors continuously passing through the plurality of slot groups, wherein each slot group corresponds to one conductor among the plurality of first conductors; The second winding portion includes a plurality of second conductors having the standard pitch, the plurality of second conductors passing continuously through the plurality of slots, wherein each of the plurality of slots corresponds to one of the plurality of first conductors, and the plurality of second conductors are stacked on the outside of the slots relative to the plurality of first conductors of the first winding portion. as well as The terminal portion electrically connects at least two of the plurality of first wires of the first winding portion and the plurality of second wires of the second winding portion.

2. The continuous winding assembly according to claim 1, wherein, Each of the plurality of first conductors in the first winding portion is wound twice around the outer periphery of the stator. In each of the slots, the multiple layers of the plurality of first conductors stacked in the slots are defined from the innermost side of the slot as a first layer, a second layer, a third layer, a fourth layer, a fifth layer, and a sixth layer, and The plurality of first conductors in the first winding portion include a first-1 conductor wound in the first layer and the third layer, and a first-2 conductor wound in the second layer and the fourth layer at a position relative to the axis of the stator and opposite to the first-1 conductor.

3. The continuous winding assembly according to claim 2, wherein, Each of the plurality of second conductors in the second winding portion is wound once around the outer periphery of the stator, and the plurality of second conductors in the second winding portion includes a 2-1 conductor wound in the fifth layer and a 2-2 conductor wound in the sixth layer.

4. The continuous winding assembly according to claim 3, wherein, The terminal portion includes a first terminal, the first terminal including a plurality of connecting portions, each of the plurality of connecting portions having: a first end connected to one of the first-1 wire or the first-2 wire and a second end connected to one of the second-1 wire or the second-2 wire; and a connecting member connecting the first end and the second end.

5. The continuous winding assembly according to claim 4, wherein, The first terminal includes: a first connecting portion having a first length greater than the standard pitch among the plurality of connecting portions; and a second connecting portion having a second length equal to or less than the standard pitch, and Wherein, the first extension length of the connecting member of the first connecting part is longer than the extension length of the connecting member of the second connecting part.

6. The continuous winding assembly according to claim 3, wherein, Both ends of the second-1 conductor and both ends of the second-2 conductor extend outward along their respective extension directions, and the terminal portion includes a second terminal, the second terminal including a plurality of connecting portions, each connecting portion having a first end connected to the second-1 conductor and a second end connected to the second-2 conductor.

7. The continuous winding assembly according to claim 6, wherein, Both ends of the second-1 conductor extend outward along its first extension direction, and Wherein, the first end of the second-2 conductor extends outward along its second extension direction, and the second end of the second-2 conductor extends inward along its second extension direction.

8. The continuous winding assembly according to claim 7, wherein, The second-1 wire and the second-2 wire are directly connected to each other.

9. The continuous winding assembly according to claim 7, wherein, The second-1 wire and the second-2 wire are integrally formed and extend in the same direction along the circumferential direction of the motor.

10. The continuous winding assembly according to claim 7, wherein, The second-1 wire and the second-2 wire are integrally formed and extend in opposite directions along the circumferential direction of the motor.

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