Author(s)

Zheng Xijiang, Wang Ligong, Lv Yuanfeng

Corresponding Author

Zheng Xijiang

Abstract

Pure electric vehicles play an important role in the rapid development of new energy vehicles due to their simple structure, zero emissions and high energy efficiency. With the implementation of the national electric vehicle strategy, the technology and products in the field of electric vehicles and their charging have developed rapidly, and the problems of charging safety and compatibility have become increasingly prominent. The structure of variable voltage charging of hub motor based on BMS and the working principle of variable voltage charging regenerative braking control method are introduced; Based on the theoretical model of variable voltage charging of hub motor, the control law of variable voltage charging regenerative braking of hub motor electric vehicle is explored. Firstly, the structure of electromechanical composite brake assembly of pure electric vehicle, the working principle of energy recovery and the main factors affecting the feedback effect of regenerative braking are analyzed in detail, and the distribution mode of electromechanical braking effort of regenerative braking system is studied. The solutions to the charging safety are given from the perspective of technology and management, and the safety issues that need to be studied are also put forward, so as to provide reference for the healthy development of electric vehicle industry.

Keywords

Electric vehicle; Charging safety; Braking stability