新能源汽车高压互锁技术及其故障诊断探析——以比亚迪e5为例

Analysis of High Voltage Interlock Technology and Fault Diagnosis for New Energy Vehicles-Taking BYD e5 as an Example

为保证新能源汽车的用车安全,主机厂普遍采用高压互锁技术,本文概述了新能源汽车高压互锁的作用、设计原则、接口和工作原理,介绍了比亚迪e5的高压系统,分析了比亚迪e5高压互锁典型故障案例,总结了比亚迪e5高压互锁系统的故障诊断思路和方法,为相关售后维修工程师的提供参考。

To ensure the safety of new energy vehicles,high voltage interlocking technology is widely used by main engine manufacturers.This article outlines the role,design principles,interfaces,and working principles of high voltage interlocking for new energy vehicles,introduces the high voltage system of BYD e5,analyzes typical fault cases of BYD e5 high voltage interlocking,and summarizes the fault diagnosis ideas and methods of BYD e5 high voltage interlocking system,providing reference for relevant after-sales maintenance engineers..