Motor stator and iron core

Abstract

The invention discloses a motor stator and an iron core. The iron core comprises an outer ring, an inner ring and a connecting part; the inner ring is arranged at the inner side of the outer ring; the inner ring comprises multiple punching sheets which are arranged at intervals along the periphery of the outer ring; the connecting part is connected between each punching sheet and the outer ring; and the inner surface of the punching sheet is subjected to arc-cutting processing along the side part of the outer ring. According to the iron core of the embodiment, arc-cutting processing is carried out at the side part of the inner surface of the punching sheet 12, and the influence from a teeth and slot effect to the motor is reduced.

Description

technical field [0001] The invention relates to the technical field of power equipment, in particular to a motor stator and iron core. Background technique [0002] In the structure of the stamping plate of the permanent magnet synchronous motor in the related art, the stator teeth are mostly composed of a full circle with multiple arcs, or multiple straight lines. For a multi-stage arc whose teeth are a full circle, when the motor is running at high speed, the torque ripple of the motor is relatively large, which easily causes vibration of the motor and increases the vibration noise of the motor. For stator stampings with teeth formed by multi-segment straight lines, manufacturability is poor due to more dimensional positioning during stator overmolding. [0003] When the stator stamping structure in the related art operates at high speed, the efficiency and output power of the motor are low, and the iron loss of the stator and rotor is relatively large. Contents of the ...

AI Technical Summary

Problems solved by technology

For a multi-segment arc with a full circle of teeth, when the motor is running at high speed, the torque ripple of the motor is relatively large, which is likely to cause vibration of the motor and increase the vibration noise of the motor

For the stator punching with teeth formed by multi-segment straight lines, the manufacturability is poor due to the large number of dimensional positioning when the stator is overmolded

[0003] When the stator punching structure in the related art operates at high speed, the efficiency and output power of the motor are low, and the iron loss of the stator and rotor is relatively large

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