Magnetic gear-type composite hub motor

Abstract

The invention provides a magnetic gear-type composite hub motor. The magnetic gear-type composite hub motor comprises a motor mandrel, an inner stator, a high-speed inner rotor, a magnetic modulation ring, and a low-speed outer rotor, wherein the inner stator, the inner rotor, the magnetic modulation ring, and the outer rotor are arranged around the motor mandrel in sequence, and are sequentially nested along the radial direction of the motor mandrel; the inner stator is fixed in the motor mandrel; the inner rotor is supported by an inner rotor support assembly and can rotate around the motor mandrel; the inner rotor support assembly is arranged on both sides of the inner rotor along the axial direction of the motor mandrel; the magnetic modulation ring is fixed on the motor mandrel through a magnetic modulation ring fixing panel; the magnetic modulation ring fixing panel is arranged on both sides of the magnetic modulation ring along the axial direction of the motor mandrel; the outer rotor is supported by an outer rotor support assembly and can rotate around the motor mandrel; the outer rotor support assembly is arranged on both sides of the outer rotor along the axial direction of the motor mandrel. The magnetic gear-type composite hub motor provided by the invention has high structural strength and rigidity, large rotation accuracy and output torque, is compact in structure, high in efficiency, small in vibration, and is suitable for direct-driven hub motor.

Description

technical field [0001] The invention relates to a hub motor, in particular to a magnetic gear type composite hub motor. Background technique [0002] The magnetic gear compound hub motor is a hub motor that combines an ordinary motor and a concentric magnetic gear in a sleeve type. The currently disclosed magnetic gear compound hub motor is an article "An integrated magnetic-geared permanent-magnet" proposed by Linni Jian, K.T.Chau, and J.Z. Jiang of the University of Hong Kong at the IEEE VPPC conference from September 3 to 5, 2008. In-wheel motor drive for electric vehicles "in-wheel motor drive for electric vehicles" proposed in-wheel motor, its structure diagram is as follows figure 1 As shown, it consists of a motor spindle 10 , a stator armature 20 , a high-speed inner rotor 30 , a magnetization ring 40 and a low-speed outer rotor 50 . The high-speed inner rotor 30 is cantilevered by the inner rotor support member 60 and has a cup shape. The magnetism adjusting ring...

AI Technical Summary

Problems solved by technology

Since the high-speed inner rotor 30 and the magnetic adjustment ring 40 in this structure are supported by cantilever, the rigidity, strength and rotation accuracy are low, and the noise and vibration are large, so it is not suitable for electric vehicles directly driven by low speed and high torque.

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