5串三元锂电池结构,小批量电池半年后,检查有几个电池同现象,BQ40Z80的PIN30限流R1电阻开路或表面有发黑迹象,测量待机功耗500uA,电芯电压低于2.0V欠压,功能失效无通讯,图中参数原理设计是否有问题,或者有没类似案列,求帮助(多次试验,问题没有复现)
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