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BQ76PL536芯片连接电池问题

Other Parts Discussed in Thread: BQ76PL536

现在我用两片BQ76PL536芯片级联,每片芯片采集六路电池电压,先记作bat1bat12,主BQ芯片采集bat1bat6电池电压;从BQ芯片采集bat7bat12电池电压。先将主BQ芯片与电池bat2bat5的连接线断开且bat1bat5之间不在连接,示意图见附图。这样理论上测量电池组两端电压应该是没有电压的(bat2bat5断开,肯定不会有整组电压),但是我用万用表测试电池组两端有电压;板子已经测试没问题,然后想问下BQ芯片内部有通路吗?期待您的回答!