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Motor stator core

A motor stator and iron core technology, applied to the static parts of the magnetic circuit, the shape/style/structure of the magnetic circuit, etc., to achieve the effects of reducing loss, reducing magnetic flux leakage coefficient, and reducing air gap magnetic flux pulsation

Pending Publication Date: 2019-06-07
苏州英磁新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The non-oriented silicon steel sheet used as the core material of the motor cannot meet these requirements; the anisotropic characteristics of the oriented silicon steel sheet make it possible, but the current orientation technology is mainly used in large hydroelectric generators and transformers, and in new energy The field of automotive motors has not yet

Method used

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Embodiment Construction

[0030] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] The invention provides a motor stator core, for details, refer to figure 1 , which differs from the prior art in that: the stator core is nested by an annular oriented silicon steel core 2 and an annular non-oriented silicon steel core 1 outside the annular oriented silicon steel core, and the annular oriented silicon steel core is used as the stator teeth The annular non-oriented silicon steel core is used as the stator yoke, and the annular oriented silicon steel core is formed by superimposing two ki...

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Abstract

The invention relates to a motor stator core. The stator core is formed by nesting an annular oriented silicon steel core and an annular non-oriented silicon steel core arranged at the external of theannular oriented silicon steel core; the annular oriented silicon steel core is formed by superposing two kinds of oriented silicon steel sheets, and is provided with oriented grooves; the oriented grooves and the annular non-oriented silicon steel core are fitted with each other to form enclosing grooves; and notch magnetic bridges are arranged between the oriented grooves and the inner side wall of the annular oriented silicon steel core and provided with magnetic bridge through holes, so that magnetic circuits of the notch magnetic bridges can be saturated. During usage, the magnetic bridge through holes can saturate the magnetic circuits of the notch magnetic bridges, so that air-gap flux density can be enhanced, magnetic flux leakage coefficients can be reduced, and motor power density can be increased; and dovetail grooves can effectively reduce notch magnetic flux leakage and air gap flux pulsation, so that the output torque of motors can be enhanced.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a motor stator core, in particular to a mixed stator core with orientation and non-orientation. Background technique [0002] At present, the electric vehicle motor stator adopts non-oriented silicon steel sheets, and the average efficiency range of the motor is 50-80%. Especially for high-speed motors, as the operating frequency increases, the core loss in the iron core increases significantly, which not only reduces the efficiency of the motor, but also affects the long-term stable operation of the motor. [0003] With the continuous improvement of the cruising range of the whole vehicle, the driving motor of new energy vehicles needs high power density, high torque, high efficiency, wide high-efficiency area, and low loss. The non-oriented silicon steel sheet used as the core material of the motor cannot meet these requirements; the anisotropic characteristics of the oriented ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/12H02K1/16
Inventor 裴瑞琳张翔建
Owner 苏州英磁新能源科技有限公司
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