Hub drive motor with radial and tangential permanent magnet steel embedded in rotor

Abstract

The invention provides a hub drive motor with radial and tangential permanent magnet steel embedded in a rotor, and belongs to the technical field of automobile motor electric appliances. The hub drive motor with the radial and tangential permanent magnet steel embedded in the rotor is composed of a shaft, a front end cover, a rear end cover, a hub type motor shell, the rotor, a stator and a stator support. The rectangular permanent magnet steel is embedded in tangential rectangular grooves and radial rectangular grooves of a rotor iron core respectively, rotor fields of the hub drive motor are formed by tangential magnetic fields and radial magnetic fields jointly, the magnetic field intensity is large, output power is high, electric exciting windings are not needed, power consumption is little, carbon brushes and mechanical commutators do not exist, the fault rate is low, and the hub drive motor with the radial and tangential permanent magnet steel embedded in the rotor has the advantages of being high in efficiency, high in power density, compact in structure, reliable in work and the like.

Description

technical field [0001] The invention provides a rotor-embedded radial and tangential permanent magnet steel hub drive motor, which belongs to the technical field of automobile motors and electrical appliances. Background technique [0002] At present, most of the driving motors used with electric vehicles are DC motors with carbon brushes and mechanical commutators. Although DC motors have simple structure, high controllability, wide speed range, relatively simple control circuit, and low cost, but Since the magnetic field of the DC drive motor is generated by the electric excitation winding, the power consumption is large and the output power is small. In addition, due to the existence of carbon brushes and mechanical commutators, it not only limits the improvement of the overload capacity and speed of the drive motor, but also if it runs for a long time, it is bound to Frequent maintenance and replacement of carbon brushes and commutators is required, so the DC motor consu...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the driving motors used with electric vehicles are DC motors with carbon brushes and mechanical commutators. Although DC motors have simple structure, high controllability, wide speed range, relatively simple control circuit, and low cost, but Since the magnetic field of the DC drive motor is generated by the electric excitation winding, the power consumption is large and the output power is small. In addition, due to the existence of carbon brushes and mechanical commutators, it not only limits the improvement of the overload capacity and speed of the drive motor, but also if it runs for a long time, it is bound to Frequent maintenance and replacement of carbon brushes and commutators is required, so the DC motor consumes a lot of energy and has a high failure rate, and its performance needs to be further improved

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