Motor stator having high coil space factor and adopting pressed trapezoidal enamelled wires

Abstract

The invention provides a motor stator having a high coil space factor and adopting pressed trapezoidal enamelled wires. A piece of slot insulation paper is put in the slot of stator core of the motor stator in S shape, and is 3-5 mm higher than the end face of the stator core; an inner-layer enamelled wire is embedded in the upper part of the S-shaped insulation paper, and an outer-layer enamelled wire is embedded in the lower part of the S-shaped insulation paper; the inner-layer enamelled wire and the outer-layer enamelled wire are both pressed to be trapezoidal externally and bent to be U-shaped. The coil space factor of the motor stator can be up to 82-90%; with the same power, the motor is light in weight and low in heat productivity; the slot insulation paper is S-shaped, so that in the structure is simple and the mounting and dismounting are convenient.

Description

technical field [0001] The invention relates to the field of automobile motors, in particular to a high-slot full-rate motor stator using pressed trapezoidal enameled wires. Background technique [0002] At present, the structure of the stator slot of the existing traditional automobile motor is complex, and its main structure is as follows: Figure 4 As shown, the slot insulating paper 1a is first inserted into the stator core 7a, and then the inner layer enameled wire group 2a is inserted, which is cut off by the interlayer insulating paper 3a, and then the outer layer enameled wire group 4a is inserted into the cover slot paper 5a, and finally inserted into the slot Wedge 6a, this structure has the following defects: [0003] 1. The motor coils are all artificially embedded, which is labor-intensive, low in production efficiency, and difficult to achieve mechanical automation production; [0004] 2. The full rate of the stator coil slots of the motor is low, all below 75...

AI Technical Summary

Problems solved by technology

[0003] 1. The motor coils are all embedded manually, which is labor-intensive, low in production efficiency, and it is difficult to realize mechanical automation production;

[0004] 2. The slot full rate of the stator coil of the motor is low, all below 75%, and the operating efficiency of the motor is low;

[0005] 3. The size of the end of the stator coil is high, resulting in a large volume, heavy weight and high cost of the motor

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