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BQ76940+BQ78350+BQ76200+12节电池组成BMS,上电时间很短,一分钟之后,系统又断电了

Other Parts Discussed in Thread: BQ78350, BQ76200, BQ76940, BQSTUDIO

BQ76940+BQ78350+BQ76200+12节电池组成BMS。

按BOOT键,系统正常启动,bqstudio通过EV2300可以和该系统通信,电池的电压可以读出来。

但是,一分钟之后,系统就掉电了。

系统的原理图如下所示,电路图有错误吗?