Disc type permasyn motor for electric car hub

Abstract

The invention relates to a disc type permasyn motor for an electric car hub, which comprises a fixed mandrel, a rotor outer casing and a stator armature disc, wherein the rotor outer casing is supported on the fixed mandrel; the stator armature disc is fixedly connected with the fixed mandrel. The left and right sides of the rotor outer casing are symmetrically fixedly connected with parallel magnetic steel discs. A circular air gap of which the cross section is in a rectangle shape is formed between the magnetic steel discs. The stator armature disc is arranged in the circular air gap and is provided with an outgoing line. The stator armature disc has no core, and is directly formed by injection molding. The magnetic steel disc adopts a Halbach type permanent magnet array structure. The invention adopts the stator armature disc without a core for direct injection molding, and the magnetic steel disc with the Halbach type permanent magnet array structure, therefore the motor can greatly enhance power density of the motor, decrease the wear and tear of the motor and has the advantages of small volume, compact structure, stable low-speed running, good controllability, light weight, small vortex consumption of the rotor, small rotating inertia, large power density, small electromechanical time constant and the like.

Description

technical field [0001] The invention relates to a permanent magnet synchronous motor, in particular to a direct drive wheel permanent magnet synchronous motor for an electric vehicle. Background technique [0002] In recent years, with people's plundering of the earth's resources and the wanton discharge of pollutants, the earth has been overwhelmed. Among them, the rapid increase in the number of cars is one of the main factors of air pollution, and the large amount of exhaust emissions from traditional fuel vehicles has become an important problem that human beings must face. As a new type of clean energy, electric energy will become an inevitable trend of future energy development, and electric vehicles will inevitably replace traditional fuel vehicles and become the master of the new era. As people pay more and more attention to energy saving and environmental protection, people are looking forward to the emergence of cars with strong power and outstanding fuel efficien...

AI Technical Summary

Problems solved by technology

At present, more than 10% of the energy of the rotating power generated by the motor of an ordinary electric vehicle is lost in the process of driving the wheels through a set of gears or a transmission system.

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