一种电动汽车模式二充电剩余电流检测设计

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关键词：充电桩；剩余电流；分立元件；检测

中图分类号：TM452文献标志码：A 文章编号：2095-8188（2025）08-0052-06

DOI： 10.16628/j. cnki. 2095-8188.2025.08.008

Design for Residual Current Detection in Mode 2 Charging of Electric Vehicles

ZHOU Zhiliang， GUO Chengtong （State-Owned Luoyang Dancheng Radio Factory，Luoyang 471OOO，China）

Abstract：In the field of new energy electric vehiclecharging piles，residual current detection isan important measure to ensure personal safety and has been implemented asa mandatory standard.At present，residual current detection is realized by means of magnetic ring induction for current signalsand single-chip microcomputer processing for acquisition.This methodnotonly requiresself-inspection to verify the working status at power-on initialization butalso has a long response time，leading to high design costs forthe power-of protection actuator. Meanwhile，the single-chip microcomputer processing mode has therisk of system freeze，which easily causes the failure of residualcurrent detection.In view ofthe above shortcomings，a method for detecting residual currnt using discretecomponents isproposed，whicheliminatestheneedforself-ispection，avoidstheriskofsystemfreeze，and featuresa fast response speed.The response time can be reduced to less than 50% of that of existing products， providing sufficient actiontime forthepower-off protection actuator.

Keywords：charging pile；residual current；discrete components；detection

0 引言

随着新能源汽车行业发展，充电桩也得到了快速发展，欧美及中国出台了相应剩余电流检测和保护标准，剩余电流的检测方法已成为重要的研究课题之一[1]。（剩余6240字）