Axial magnetic field motor rotor, axial magnetic field motor and manufacturing method

Abstract

The invention provides an axial magnetic field motor rotor, an axial magnetic field motor and a manufacturing method, the rotor comprises two rotor discs which are laminated along the axial direction, each rotor disc comprises a support, a plurality of magnetic steels and a plurality of high magnetizers, the magnetic steels and the high magnetizers are arranged at the periphery of the support at intervals, and after the two rotor discs are laminated, the magnetic steels and the high magnetizers are separated from each other. The magnetic steel of one rotor disc corresponds to the high magnetizer of the other rotor disc, and the corresponding magnetic steel and the high magnetizer are overlapped along the axial direction to form magnetic poles, so that the overlapping sequence and the magnetization direction of two adjacent magnetic poles are opposite, the use amount of permanent magnets is reduced, and the cost is reduced; compared with the prior art in which magnetization is carried out firstly, the rotor has the advantages that better conditions are provided for magnetization, that is, each rotor disc is magnetized firstly, then the two rotor discs are overlapped in the axial direction to form the rotor, and compared with the prior art in which magnetization is carried out firstly, the problem that the difficulty of assembling the magnetic steel on the support is increased due to interaction between the magnetic steel is avoided.

Description

technical field [0001] The invention relates to the field of axial magnetic field motors, in particular to an axial magnetic field motor rotor, an axial magnetic field motor and a manufacturing method. Background technique [0002] Because of the axial magnetic flux direction, the axial magnetic field motor determines its structure different from ordinary radial motors. The axial magnetic field motor has small volume, low noise, high speed, high power density, excellent heat dissipation performance, etc. Many advantages. Axial field motors are classified according to the number of rotors, relative position and main magnetic circuit, and their structures can be divided into: single stator single rotor structure, double stator single rotor structure, single stator double rotor structure and multi-disk structure. [0003] At present, axial magnetic field motors generally adopt surface-mounted permanent magnet structure. This kind of rotor surface-mounted permanent magnet struc...

AI Technical Summary

Problems solved by technology

[0003] At present, axial magnetic field motors generally adopt surface-mounted permanent magnet structure. This kind of rotor surface-mounted permanent magnet structure motor adjusts the air gap magnetic field of the motor through frequency conversion control, and the ability to change the counter electromotive force is weak, thus limiting the axial Application range of magnetic field motor

In addition, the magnetic steel is magnetized and then assembled on the rotor, which increases the difficulty of assembly

[0004] In addition, most of the permanent magnet materials are rare earth materials. With the continuous increase of the cost of rare earth materials, the cost of the motor is also rising. Therefore, how to reduce the amount of permanent magnets while ensuring the performance of the axial magnetic field motor is a problem to be solved by those skilled in the art. key issues of

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