一款高压直流接触器结构研发及优化

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Development and Optimization of a HVDC Contactor Structure

Wan Qian，Zhuang Daojian，Zhuang Xiaohang，Chang Wenxin，Ran Yi，Wu Wulue （Zhejiang Huanfang Automobile Electric Appliance Co.，Ltd.，Taizhou ，China）

【Abstract】Based on the structure and processof a HVDC contactor，the mechanical stress of auxiliary shrapnel andauxiliarypuller，thedistributionof magnetic fieldlines inthestateof magneticcircuit drawing，and thedirectionof magnetic field lines of thearcquenching structure inthe magneticfieldareanalyzedby simulation technology.At the same time，DOE verification of contact structure and inflation pressure was carried out，circuit boards with PWM power were optimized，and epoxyglue curing processwas explored.On this basis，a HVDC contactor with high performance andhighreliability has beensuccesfullydeveloped toachieve non-polarityof theloadand non-polarityof hecoil external power supply，which meets the user'sconvenience.After rigorous testing，the product successfully pased the type testand national 3C certification.This research，combined with theoretical basisand application experience，has important engineering value for designing and optimizing the performance of HVDC contactors.

【Key words】HVDC contactor；auxiliary contact；circuit board with PWM function；arc extinguishing gas；the load is non-polar； epoxy glue

0 引言

高压直流接触器自 世纪中期起步，最初配套航空、船舶项目发展，已广泛应用到新能源行业，涵盖了新能源行业的各类车辆 （乘用车、商用车、电动、叉车、自动导向车 等）、充电桩、储能及光伏系统等领域。（剩余6097字）