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比亚迪BYD秦电压过低，电机控制器采样电路故障—新能源汽车维修
比亚迪BYD秦报动力电池电压过低故障，无法上高压，经检查后发现MCU电机控制器电路板采样电路，运算放大器出现故障，更换后故障处理
新能源电动汽车维修培训、原理与结构451/1380
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