基于控制原理的比亚迪秦EV快充系统故障诊断

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中图分类号：U469.72 文献标识码：B 文章编号：1003-8639（2026）02-0162-03

Fault Diagnosis of BYD Qin EV Fast Charging System Based on Control Principles

Xiao Jinlong

（Departmentof Vehicle Engineeing，Henan Industryand Trade Vocational Colege， Zhengzhou 451191， China）

【Abstract】This paper focuses on the fast charging system of BYDQin EV.Based on the control principle，itanalyzes its structureandcontrollogic，andthrough experiments，summarizes thekeycontrol procesesandsignalcharacteristics. Forthree typical faultssuch as the wake-upsignal，CAN network，and positivecontactorcontrol circuit，thephenomena， diagnosis，and elimination methodsareelaborated.Theresearchresultsprovideareferenceforthe maintenanceandteaching of new energy vehicles，and help to improve the eficiency offault diagnosis and operational standardization.

【Key words】Electric Vehicle；fast charging system；control principles；fault diagnosis；skills competition

0 引言

电动汽车作为绿色交通核心载体快速发展，动力电池性能及充电效率直接影响使用体验{]。（剩余3596字）