电动汽车用直流接触器的电动斥力仿真及优化  

Simulation and optimization of electric repulsion force of DC contactor for electric vehicle

作　　者：陈晨 迟长春(指导)[1] CHEN Chen;CHI Changchun(School of Electrical Engineering,Shanghai Dianji University,Shanghai 201306,China)

机构地区：[1]上海电机学院电气学院,上海201306

出　　处：《上海电机学院学报》2022年第2期76-81,共6页Journal of Shanghai Dianji University

摘　　要：针对电动汽车用直流接触器在通过大电流时,会产生较大电动斥力的问题,通过在直流接触器动触板上增加隔磁块,对电动斥力进行优化设计。基于SolidWorks软件对直流接触器触头系统建立导电桥模型,模拟动静触头间电流收缩现象。通过增加隔磁块改变磁场分布,降低触头间电动斥力,基于Maxwell软件对不同方案进行电动斥力仿真计算。结果表明:优化后触头系统的电动斥力明显降低,提高了直流接触器的短时耐受电流能力,为直流接触器的发展提供了参考。Due to the problem that the DC contactor for electric vehicles will generate a large electric repulsion force when a large amount of current passes through it, the electric repulsion force is optimized by adding a magnetic isolation block on the moving contact plate of the DC contactor. The Solid Works software is used to establish a conductive bridge model for the DC contactor contact system to simulate the current shrinkage between the dynamic and static contacts. The magnetic field distribution is changed by adding a magnetic isolation block, and the electrodynamic repulsion between the contacts is reduced. The Maxwell software is used to simulate and calculate the electrodynamic repulsion of different schemes. The results show that the electrodynamic repulsion of the contact system is significantly reduced after optimization, and the short-time withstand current capability of the DC contactor is improved, which provides a reference for the future development of the DC contactor.

关 键 词：直流接触器 导电桥 电动斥力 短时耐受能力 隔磁块 

分 类 号：TM572.1[电气工程—电器]