比亚迪秦EV纯电动新能源汽车高压不上电问题时有发生,对车辆正常使用有很大影响。基于此,本文介绍比亚迪秦EV高压系统结构和控制逻辑,分析高压不上电故障的类型,阐述此类故障的诊断流程与方法,并结合实际案例提出常见故障原因、表现与维修方法。

The problem of high voltage failure to power on BYD Qin EV pure electric new energy vehicles occurs from time to time, which has a significant impact on the normal use of the vehicle. Based on this, this article introduces the high-voltage system structure and control logic of BYD Qin EV, analyzes the types of high-voltage non power on faults, explains the diagnostic process and methods of such faults, and proposes common fault causes, manifestations, and maintenance methods based on practical cases.