Compressor stator, permanent magnet motor, compressor and stator coil winding method

Abstract

The present invention discloses a compressor stator, a permanent magnet motor, a compressor and a stator coil winding method. The stator comprises a stator iron core and coils. The stator iron core is provided with a plurality of circumferentially spaced winding teeth and a winding slot is formed between every two adjacent winding teeth. M coils are sequentially wound onto each winding tooth from the inside to the outside, wherein the line outgoing taps of the m coils for each winding tooth are connected, and the line incoming taps of the m coils for each winding tooth are connected. M is larger than or equal to 2. According to the technical scheme of the invention, during the winding process, coils are not easily scratched or knotted, and are arranged more orderly. Meanwhile, the production efficiency is high, and the manufacturability is improved. The slot fullness rate of the motor is improved.

Description

technical field [0001] The invention belongs to the technical field of compressor manufacturing, and in particular relates to a stator of a compressor, a permanent magnet motor with the stator, a compressor with the permanent magnet motor, and a winding method for stator coils of the compressor. Background technique [0002] In the motor manufacturing process, low-voltage and high-current motors are generally wound in parallel or parallel or a combination of the two. Since the process of paralleling multi-strand enameled wires is relatively difficult, multi-strand wires are generally selected for winding through a single-hole winding nozzle, which requires increased winding tension and increased friction between multi-strand wires, which is prone to wire Injury will affect the quality of the motor. At the same time, double-wire winding increases the maximum inner diameter of the winding nozzle. When the winding nozzle maintains a certain strength, the width of the winding n...

AI Technical Summary

Problems solved by technology

Since the process of paralleling multi-strand enameled wires is relatively difficult, multi-strand wires are generally selected for winding through a single-hole winding nozzle, which requires increased winding tension and increased friction between multi-strand wires, which is prone to wire Injury, affecting the quality of the motor

At the same time, double-wire winding increases the maximum inner diameter of the winding nozzle. When the winding nozzle maintains a certain strength, the width of the winding nozzle must be increased. When the stator core mold remains unchanged, the slot size remains unchanged. During the winding process, it is easy to have the problem that the winding wire hits the winding nozzle. What is more important is that during the winding process, multiple strands of enameled wire are wound together and tend to cross, resulting in a large gap between the coils, which greatly reduces the slot fill rate and seriously affects the motor. performance

[0003] In the related art, in order to solve the above problems, some solutions set multiple separate wire outlet holes in a single winding nozzle, so that each strand of wire uses a separate wire outlet hole, and at the same time, the size of each hole along the axial direction of the hole is based on the actual wire winding. The setting of the situation is different, which can reduce the damage point of the wire, and can also reduce the crossover phenomenon, but the requirement for precision is particularly high. , high difficulty, time-consuming, difficult to achieve mass production, there is room for improvement

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