12-slot motor winding structure

Abstract

A 12-slot motor winding structure comprises a stator assembly, a stator iron core comprises a yoke part and a plurality of teeth extending from the yoke part to the center direction of the stator iron core, and the number of the teeth is 12; a winding structure is wound on the teeth, the winding structure forms a triangular circuit by a UW circuit, a VW circuit and a VU circuit, each circuit in the triangular circuit comprises two winding circuits connected in parallel, the winding circuits start to wind from one wire hanging terminal, and the winding head passes through the upper end part / lower end part of the insulating framework; and after being wound around the two teeth at the mechanical angle of 60 degrees in sequence, the wire passes through or does not pass through the transition wire, then is wound around the two teeth at the mechanical angle of 60 degrees in sequence, passes through the upper end part / lower end part of the insulating framework, and finally ends to be hung on the other wire hanging terminal. According to the utility model, automatic wire hanging and automatic wire passing of the winding machine are realized, an automatic parallel winding process is realized, manual wire cutting and doubling are not needed, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the stator winding structure of a brushless DC motor, specifically to a winding structure for an 8-pole 12-slot motor and a 10-pole 12-slot motor. Background Technology

[0002] Brushless DC motors mainly consist of the motor body and a controller. The permanent magnet magnetic field of the rotor interacts with the alternating magnetic field of the stator to generate permanent magnet torque, driving the rotor to rotate. It is a mainstream integrated permanent magnet motor product. The stator winding is a concentrated winding with overlapping parallel connections, resulting in low automation and a tendency for inter-turn defects.

[0003] The existing technical solution is as follows: Currently, the winding of an 8-pole 12-slot motor is a two-way parallel winding structure with angle connection. The electrical principle is as follows: Figure 1 As shown, the U, V, and W phases are at a 120° angle, with a 7.5° slot angle and a 60° phase band; 12 wire ends emerge from the hanging terminal, and there is overlap and crossing of the wires. The defects are: manual wire cutting and merging are required, resulting in low production efficiency and poor quality stability and consistency.

[0004] The existing winding scheme has the following drawbacks:

[0005] ① The distance between the motor's lower wire W1 and the output wire U2 and the W and U terminals is relatively far, requiring manual wiring, which is difficult to operate;

[0006] ② If the U, V, or W wire ends are wound around the lower end of the cable and cannot pass through the upper end, the cable must be manually cut. Figure 2 The process is complicated, labor costs are high, and quality stability is poor. Utility Model Content

[0007] The technical problem this utility model aims to solve is: addressing the issues of low production efficiency, insufficient technical production capabilities, and the need for manual wire cutting and winding, which are difficult to operate, this utility model provides a winding scheme for 8-pole 12-slot and 10-pole 12-slot motors, solving the problems of manual wire cutting and winding during the winding process, which are difficult to operate, have low production efficiency, and suffer from poor quality stability and consistency.

[0008] To solve the above problems, this utility model is achieved through the following technical solution:

[0009] A 12-slot motor winding structure includes a stator assembly, which includes an insulating frame, a stator core nested inside the insulating frame, enameled wire wound on the winding teeth of the stator core, and a hanging terminal provided on the insulating frame; the stator core includes a yoke and a plurality of teeth extending from the yoke toward the center of the stator core, the number of teeth being 12.

[0010] The toothed winding structure consists of a UW line, a VW line, and a VU line forming a triangular circuit. Each line in the triangular circuit includes two parallel winding lines. The winding line starts from a hanging terminal, passes through the upper / lower end of the insulating frame, passes through two teeth at a 60° mechanical angle, passes through or does not pass through the transition line, passes through two more teeth at a 60° mechanical angle, passes through the upper / lower end of the insulating frame, and finally ends up on another hanging terminal.

[0011] The insulating frame is equipped with three hanging terminals: W-phase hanging terminal, V-phase hanging terminal and U-phase hanging terminal.

[0012] The upper end of the insulating frame is provided with a terminal insertion hole, and a hanging terminal is inserted into the terminal insertion hole.

[0013] S1: UW line winding: The winding start is hung on the W phase terminal; the winding start passes through the upper end of the insulating frame, winds through tooth 4, passes through the lower end of the insulating frame, winds through tooth 1, and hangs on the U phase terminal after winding; then, the transition wire passes through the lower end of the insulating frame, winds through tooth 10, passes through the lower end of the insulating frame, winds through tooth 7, and hangs on the W phase terminal after winding.

[0014] S2: VW line winding: The winding starts by passing through the W phase hanging terminal and then around the wire tool post, and then hanging on the V phase hanging terminal; the winding starts by passing through the upper end of the insulating frame, winding around tooth 2, passing through the lower end of the insulating frame, winding around tooth 11, and hanging on the W phase hanging terminal after winding; then, the transition wire passes through the lower end of the insulating frame, winding around tooth 8, passing through the lower end of the insulating frame, winding around tooth 5, passing through the upper end of the insulating frame, and hanging on the V phase hanging terminal after winding.

[0015] S3: VU line winding: After the winding starts through the V phase terminal, it is wound around the wire tool post and then hung on the U phase hanging terminal; the winding starts from the upper end of the insulating frame, winding through tooth 3, then from the lower end of the insulating frame, winding through tooth 12, and after winding, it is hung on the V phase hanging terminal; then, the transition wire passes through the lower end of the insulating frame, winding through tooth 9, then from the lower end of the insulating frame, winding through tooth 6.

[0016] S4: Winding out: The wire passes through the upper end of the insulating frame and ends at the U-phase terminal.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention optimizes the stator winding path, the wire hanging position, the wire cutting position, and the insulation plastic-coated skeleton, thereby realizing automatic wire hanging and automatic wire passing of the winding machine, realizing automatic parallel winding process, eliminating the need for manual wire cutting and parallel winding, improving production efficiency, saving labor costs, improving product competitiveness, and improving product production stability and consistency. Attached Figure Description

[0018] Figure 1 This is the electrical schematic diagram of the winding structure;

[0019] Figure 2 It is a schematic diagram of existing technology for routing, passing, and cutting wires;

[0020] Figure 3 This is a diagram of the winding structure of this utility model;

[0021] Figure 4 This is the main view of the stator component;

[0022] Figure 5 This is a side view of the stator assembly;

[0023] Figure 6 This is a 3D view of the stator assembly;

[0024] Figure 7 This is another winding structure diagram of this utility model. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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. Therefore, they should not be construed as limitations on this utility model.

[0027] like Figure 4 , Figure 5 , Figure 6 As shown, a 12-slot motor winding structure includes a stator assembly. The stator assembly includes an insulating frame 1, inside which a stator core 2 is nested. Enamelled wire is wound around the winding teeth of the stator core 2. The upper end of the insulating frame 1 is provided with a terminal insertion hole, into which a hanging terminal 3 is inserted. In this case, the insulating frame 1 is provided with three hanging terminals 3, namely the W-phase hanging terminal, the V-phase hanging terminal, and the U-phase hanging terminal. The stator core 2 includes a yoke and a plurality of teeth 4 extending from the yoke towards the center of the stator core 2, the number of teeth 4 being 12.

[0028] like Figure 3 As shown, a 12-slot motor winding structure includes 8-pole 12-slot and 10-pole 12-slot winding structures. It consists of a delta circuit formed by UW, VW, and VU lines. Each line in the delta circuit includes two parallel winding lines. The winding line starts from a hanging terminal 3, passes through the upper / lower end of the insulating frame 1, passes around two teeth 4 at a 60° mechanical angle, and then passes through two teeth 4 at a 60° mechanical angle again, with or without transition wire treatment. Finally, it passes through the upper / lower end of the insulating frame 1 and ends up hanging on another hanging terminal 3.

[0029] There are 12 teeth, named sequentially as tooth 1, tooth 2, ... tooth 12. It should be noted that the position of tooth 1 can be arbitrarily determined and has no relation to the position of the hanging terminal 3.

[0030] Example 1 (after transition line treatment)

[0031] like Figure 3 As shown, the connection starts from the W-phase terminal and ends at the U-phase terminal.

[0032] S1: UW Line Winding: The winding begins by attaching the wire to the winding fixture (existing equipment). The winding machine's nozzle drives the enameled wire to hang on the W-phase terminal 3, thus starting the winding process. The starting wire passes through the upper end of the insulating frame 1, winds through tooth 4, then through the lower end of the insulating frame 1, winds through tooth 1, and is then hung on the U-phase terminal (transition). The transition wire then passes through the lower end of the insulating frame 1, winds through tooth 10, winds through the lower end of the insulating frame 1, winds through tooth 7, and is then hung on the W-phase terminal. It should be noted that the 12 teeth 4 are distributed in a 360° pattern; therefore, tooth 4 and tooth 1 form a 60° mechanical angle, and tooth 10 and tooth 7 also form a 60° mechanical angle.

[0033] S2: VW line winding: After passing through the W phase hanging terminal, the wire is wound around the wire tool post, and then hung on the V phase hanging terminal. The winding begins from the upper end of the insulating frame 1, winds around tooth 2, passes through the lower end of the insulating frame, winds around tooth 11, and hangs on the W phase hanging terminal after winding; then, the transition wire passes through the lower end of the insulating frame, winds around tooth 8, passes through the lower end of the insulating frame, winds around tooth 5, passes through the upper end of the insulating frame, and hangs on the V phase hanging terminal after winding.

[0034] S3: VU line winding: After passing through the V phase terminal, the wire is wound onto the wire tooling post, and then hung on the U phase hanging terminal. The winding begins from the upper end of the insulating frame 1, winding around tooth 3, passing through the lower end of the insulating frame, winding around tooth 12, and after winding, it is hung on the V phase hanging terminal; then, the transition wire passes through the lower end of the insulating frame, winding around tooth 9, passing through the lower end of the insulating frame, and winding around tooth 6;

[0035] S4: Winding Out: The wire passes through the upper end of the insulating frame, hangs the U-phase terminal, hangs on the winding fixture column, ends, and is cut.

[0036] S5: After winding, pre-tighten the U, V, and W three-phase terminals, and cut the transition wires between the U, V, and V, and V and W terminals.

[0037] Example 2 (without transition line processing)

[0038] like Figure 7 As shown, the connection starts from the U-phase terminal and ends at the W-phase terminal.

[0039] T1: Start the winding and hang the U-phase terminal. The winding starts from the lower end of the insulating frame 1, passes the wire, winds the No. 3 tooth, then winds the No. 12 tooth, hangs the V-phase terminal, winds the No. 9 tooth, and then winds the No. 6 tooth.

[0040] T2: After winding tooth 6, hang the U and V phase wire terminals, then wind the other phase. After the V phase wire terminal is down, wind tooth 2, tooth 11, tooth 8, and tooth 5 in sequence.

[0041] T3: After winding the No. 5 tooth, connect the V and W phase terminals, wind the last phase, and then wind the W phase terminal in sequence, followed by the No. 4, No. 1, No. 10, and No. 7 teeth.

[0042] T4: The W-phase terminal is connected at the end.

[0043] The above description is only a preferred embodiment of the present utility model. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present utility model, and these should also be considered within the protection scope of the present utility model.

Claims

1. A 12-slot motor winding structure, characterized in that: The stator assembly includes an insulating frame (1), a stator core (2) is nested inside the insulating frame (1), enameled wire is wound on the winding teeth of the stator core (2), and a hanging terminal (3) is provided on the insulating frame (1); the stator core (2) includes a yoke and a plurality of teeth (4) extending from the yoke toward the center of the stator core (2), the number of teeth (4) being 12; The winding structure is wound around the teeth (4). The winding structure is composed of UW line, VW line and VU line forming a triangle circuit. Each line in the triangle circuit includes two parallel winding lines. The winding line starts from a hanging terminal (3). The winding starts from the upper / lower end of the insulating frame (1), passes around the two teeth (4) with a mechanical angle of 60°, passes through or does not pass through the transition line, passes around the two teeth (4) with a mechanical angle of 60°, passes through the upper / lower end of the insulating frame (1), and finally ends up on another hanging terminal (3).

2. The 12-slot motor winding structure according to claim 1, characterized in that: The insulating frame (1) is provided with three hanging terminals (3), namely the W-phase hanging terminal, the V-phase hanging terminal and the U-phase hanging terminal.

3. The 12-slot motor winding structure according to claim 1, characterized in that: The upper end of the insulating frame (1) is provided with a terminal insertion hole, and a hanging terminal (3) is inserted into the terminal insertion hole.

4. The 12-slot motor winding structure according to claim 1, characterized in that: S1: UW line winding: The winding start is hung on the W phase hanging terminal (3); the winding start passes through the upper end of the insulating frame (1), winds through tooth 4, passes through the lower end of the insulating frame (1), winds through tooth 1, and after winding, hangs on the U phase hanging terminal; then, the transition wire passes through the lower end of the insulating frame (1), winds through tooth 10, passes through the lower end of the insulating frame (1), winds through tooth 7, and after winding, hangs on the W phase hanging terminal; S2: VW line winding: The winding starts by passing through the W phase hanging terminal and then around the wire tool post, and then hanging on the V phase hanging terminal; the winding starts by passing through the upper end of the insulating frame (1), winding around tooth 2, passing through the lower end of the insulating frame, winding around tooth 11, and hanging on the W phase hanging terminal after winding; then, the transition wire passes through the lower end of the insulating frame, winding around tooth 8, passing through the lower end of the insulating frame, winding around tooth 5, passing through the upper end of the insulating frame, and hanging on the V phase hanging terminal after winding. S3: VU line winding: After the winding starts through the V phase terminal, it is wound around the wire tool post and then hung on the U phase hanging terminal; the winding starts from the upper end of the insulating frame (1), and winds through tooth 3, then through the lower end of the insulating frame, and winds through tooth 12, and hangs on the V phase hanging terminal after winding; then, the transition wire passes through the lower end of the insulating frame, winds through tooth 9, then through the lower end of the insulating frame, and winds through tooth 6. S4: Winding out: The wire passes through the upper end of the insulating frame and ends at the U-phase terminal.

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