A hybrid magnetic field rotor and an assembly method of the hybrid magnetic field rotor

Abstract

This application relates to the technical field of permanent magnet motors, and provides a hybrid magnetic field rotor and an assembly method of the hybrid magnetic field rotor. The hybrid magnetic field rotor includes: a tangential rotor part, an axial rotor part, and a plurality of connected iron cores; The tangential rotor part and the axial rotor part are arranged coaxially, and a plurality of the connecting iron core bodies are respectively assembled in the tangential rotor part, and one end of the plurality of connecting iron cores is connected to the axial rotor part contact; the respective magnetic poles of the tangential rotor part and the axial rotor part correspond one-to-one in the axial direction, and the polarities of the corresponding positions in the axial direction are all the same. When in use, the internal space structure of the rotor is fully utilized, and the magnetic performance of the rotor is greatly improved by using the combination technology of mixed magnetic fields in different directions, which solves the bottleneck technical problem of the structural limitation of the magnetic performance of the rotor in the industry, and improves the power density of the motor.

Description

technical field [0001] The present application relates to the field of permanent magnet motor equipment, in particular to a hybrid magnetic field rotor and an assembly method for the hybrid magnetic field rotor. Background technique [0002] With the guidance of the government's energy-saving policy and the needs of market development, the direct current of household appliances fans has gradually become a trend. At present, the brushless motors used in the industry are radial magnetic field surface-mounted structures, and the power density of the motors is low and the material utilization rate is low. [0003] Affected by the rising market price of motor raw materials, high power density motors have become the development trend of brushless DC motors. In permanent magnet motors, in order to improve the performance of the motor, it is usually necessary to obtain higher rotor magnetic properties. Under the limited structure, compared with the surface-mounted and embedded radia...

AI Technical Summary

Problems solved by technology

However, the embedded permanent magnet with tangential structure is limited by the design of magnetic isolation bridges on the inner and outer sides of the radial direction, and there is a certain amount of magnetic flux leakage that leads to performance degradation. The structural strength of the rotor and the magnetic isolation effect are mutually restricted.

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