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BQ76930: 检测负载或者充电器

Part Number: BQ76930

两片BQ76930级联监测20S电池。充电MOS和放电MOS管的关断和开启通过MCU分别读取两个BQ76930的CHG和DSG的状态后,MUC控制逻辑芯片(输出12V)来控制MOS管的开和关。在这样情况在怎么检测负载和充电器?