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BQ40Z80: 请教BQ40z80用于6串磷酸铁锂电池均衡异常问题。

Part Number: BQ40Z80

我司量产BQ40Z80保护板用在客户产品上,发现均衡异常启动,电池压差只有1-2mV。

这时并没有充电,但是CB已经置位,通讯已经联到主机。如果把SMBus通讯端断开主机,均衡就关闭了,请问这是什么原因?