Direct-drive high-performance permanent magnet brushless motor for electric vehicle

Abstract

The invention relates to a direct-drive high-performance permanent magnet brushless motor for an electric vehicle, comprising an internal stator part and an external rotor part, wherein the external rotor part is used for connecting with tyres; the internal stator part is connected with an automobile suspension; the internal stator part comprises a motor stator, a motor winding and a motor controller; the external rotor part comprises a motor rotor and a permanent magnet; the motor stator has a coiling and superposing structure of a helical strip-shaped iron sheet; furthermore, the coiling and superposing structure is a structure with spaced wide teeth and narrow teeth; the motor winding enwinds the wide teeth of the motor stator; and the narrow teeth are not wound by wires. The direct-drive high-performance permanent magnet brushless motor for the electric vehicle has the advantages of small motor vibration, low noise, high transmission efficiency, good heat dissipation, and the like.

Description

technical field [0001] The invention relates to a direct-drive high-performance permanent magnet brushless motor for electric vehicles, belonging to the technical field of electric vehicle drive motor manufacturing. Background technique [0002] At present, the supply of global oil resources is becoming increasingly tense, and climate issues such as the greenhouse effect are getting more and more attention from all countries in the world. It has become a global consensus to develop a low-carbon economy and take the road of sustainable development. Compared with the 20% to 30% output efficiency of traditional fuel / steam engine-driven vehicles, the maximum output efficiency of electric vehicles can reach more than 85%. Due to its advantages of high efficiency and energy saving, low or zero emission, superior performance and relatively low price, it has been widely recognized and welcomed by the market, and has increasingly become the focus of the global automobile industry, sh...

AI Technical Summary

Problems solved by technology

[0008] However, at present, domestic pure electric vehicle drive motor systems generally have problems such as small starting torque of AC induction motors, low power density, large volume, low efficiency, complex structure, high cost, low reliability and high noise of general brushless permanent magnet motors. There is a big gap with foreign advanced pure electric vehicle drive motors

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