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BQ20Z45软体侦测电压以及校准问题

Other Parts Discussed in Thread: BQ20Z45

请教大侠们一个问题,我在使用bq20Z45时总是遇到软体侦测电压与实际电压相差很大,单个电芯误差在6-10mV,PACK相差20mV左右,而且校正不过来,我想问一下这具体可能跟什么有关?求解!