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Motor rotor and motor

A technology of motor rotor and rotor core, applied in electrical components, electromechanical devices, electric components, etc., can solve the problems of poor magnetic concentration and difficult magnetization of tangential permanent magnet synchronous motors, and improve the magnetic concentration. , The effect of reducing the difficulty of magnetization and improving the torque density

Pending Publication Date: 2019-01-04
ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a motor rotor and a motor to solve the problems of the tangential permanent magnet synchronous motor in the prior art, which are difficult to magnetize and have poor magnetic gathering ability

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  • Motor rotor and motor
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Embodiment Construction

[0033] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0034] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0035] For the convenience of description, spatially relative terms may be used here, such as "on ...", "over ...", "on the surface of ...", "above", etc., to describe the ...

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Abstract

The invention provides an electric machine rotor and an electric machine. A motor rotor includes a rotor core and a permanent magnet, the rotor core is provided with a plurality of claw-shaped mounting grooves in the circumferential direction, The claw-shaped mounting groove comprises a tail magnetic isolation groove and a plurality of long-bar grooves, wherein the long-bar grooves extend along the inner and outer directions of the rotor core, one end of the long-bar grooves close to the inner side of the rotor core is communicated with the tail magnetic isolation groove, the long-bar groovesare located on the side of the tail magnetic isolation groove away from the center of the rotor of the motor, and permanent magnets are arranged in each long-bar groove. The invention adopts a claw-shaped mounting groove to mount a permanent magnet, and the permanent magnet is divided into a plurality of pieces and installed in the claw-shaped mounting groove, so that the thickness of the permanent magnet can be reduced and the magnetization difficulty of the permanent magnet can be reduced. In addition, the surface area of the permanent magnet in the claw-shaped mounting groove in the invention is improved, which can remarkably improve the magnetic convergence ability of the motor rotor, thereby improving the torque density of the motor rotor, and is particularly suitable for improving the magnetic convergence ability of the motor rotor with a small pole number.

Description

technical field [0001] The invention relates to the technical field of driving devices, in particular to a motor rotor and a motor. Background technique [0002] The permanent magnet synchronous motor with tangential rotor structure has "magnetism gathering effect", and the torque density is typically higher than that of ordinary models, especially in the occasions with a large number of pole pairs. In the case of a small number of motor poles, the traditional tangential rotor structure is also used, and the "magnetism gathering effect" of the motor is significantly reduced. [0003] When the number of pole pairs of the tangential motor made of ferrite is lower than four pairs of poles, the output capacity of the tangential permanent magnet synchronous motor is no different from that of the general structure permanent magnet synchronous motor. [0004] For tangential motors made of NdFeB material, when the number of pole pairs is lower than three pairs of poles, the "magnet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/27
CPCH02K1/2766H02K2213/03
Inventor 高明世刘通马梓净张凯
Owner ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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