Electric drive of automobile

Abstract

The invention relates to an electric drive of automobile, which is characterized in: it comprises a motor housing, a main shaft, a rotor embedded with winding and permanent magnets disposed on the inner circumference of the housing; further comprises a reversing device, a energy storage and transduction device and a decelerator; the permanent magnets on the inner circumferential surface of the motor housing are arranged in multiple groups and multiple blocks; each permanent magnet is in tile shaped; the multiple permanent magnets of each group on the same end face are combined in by same poles; and the multiple groups of permanent magnets are alternated by N and S poles. The invention can start under the low voltage small current state, and can achieve the same torque, has small instantaneous peak current when zero locked rotor starting, can store energy when motor idling, and can hold the temperature rise below 100 degrees centigrade.

Description

technical field [0001] The invention relates to a vehicle power device, which is an automobile pure electric driving machine. Background technique [0002] In the prior art, the power plant of automobile is mainly gasoline engine and diesel engine. As people's voice for reducing environmental pollution is getting higher and higher and natural resources such as oil are becoming less and less, driving devices such as hybrid power and battery + electric motor are developing rapidly. At present, in the research and development of pure electric vehicles, the motors generally use permanent magnet AC and DC motors and are powered by batteries. Since the existing AC / DC permanent magnet motors are used in pure electric vehicles, they start with zero load stalling, and their instantaneous peak currents are generally several times or even ten times higher than the rated operating current. Such a large instantaneous peak current If it exceeds several times or even more than ten times ...

AI Technical Summary

Problems solved by technology

And, the present inventor finds in the long-term study new application of permanent magnet magnetic performance, permanent magnet has two parts of available kinetic energy and potential energy, and existing permanent magnet motor just uses the activation potential kinetic energy of permanent magnet singly, as making electric energy Converted into electrical torque without fully utilizing the potential energy in the permanent magnet

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