Switch magnetic flux motor for directly driven electric vehicle

Abstract

The invention provides a switch magnetic flux motor for a directly driven electric vehicle, and the motor comprises a switch magnetic flux motor, a rotary transformer, a main reducing gear, a differential mechanism, a semi-axis, an axle housing and driving wheels. The speed of the output power end of the switch magnetic flux motor is reduced by the main reducing gear, the differential operation among the driving wheels is realized through the differential mechanism and transmitted to the driving wheels by the semi-axis so as to realize the power transmission of the whole vehicle; the device is of an integral rotor structure without any coil winding or permanent magnet body and realizes the direct driving of the motor and a driving axle with the rotary transformer as the monitoring and feedback device of the output rotating speed of the motor and the phase of a rotor, with the driving gear shaft of the main reducing gear of the vehicle as a motor shaft, and with the main reducing gear shell of the vehicle as part of the outer shell of the motor. According to the device, the whole structure is compact, particularly a motor rotor has the advantages of simple structure, convenience in use and maintenance, good capability in resisting impact and vibration, low production cost, large output torque, high output rotating speed and the like, and the requirements on the running of the vehicle under various complicated working conditions are met.

Description

technical field [0001] The invention belongs to the technical field of automobile engineering, and in particular relates to a switched magnetic flux motor for a direct drive electric vehicle. Background technique [0002] According to the draft of my country's "New Energy Vehicle Industry Development Plan", by 2020, the industrialization and market scale of new energy vehicles should reach the first place in the world. New energy vehicles (plug-in hybrid vehicles, pure electric vehicles, hydrogen fuel cell vehicles, etc.) The inventory has reached 5 million vehicles. Therefore, the development of electric vehicles has broad prospects. [0003] At present, there are many types of driving motors used in pure electric vehicles and combinations with transmission systems of electric vehicles. However, various motors and electric vehicle drive systems are common: AC induction motors have small starting torque, brushless permanent magnet motors have defects such as low power densi...

AI Technical Summary

Problems solved by technology

However, various motors and electric vehicle drive systems are common: AC induction motors have small starting torque, brushless permanent magnet motors have defects such as low power density, large volume, low efficiency, complex structure, high cost, low reliability, and high noise.

In addition, the performance requirements of the motors used in electric vehicles are special, that is, the motor speed changes rapidly and frequently during the driving process, and the vibration and impact received are large, and the operating environment is harsh.

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