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BQ76930数据错误问题

Other Parts Discussed in Thread: BQ76930

BQ76930采集8串磷酸铁锂电池单体电压错误。

仅使用BQ76930的数据采集功能,与STM32通信;充放电流和驱动功能并不使用,SRN和SRP引脚通过0R电阻接地,CHG和DSG引脚悬空。

结果是BQ76930读取的电池单体电压几乎都是错误的,尤其是第五节单体,仅为0.5~0.6V。

测量得到:单体电压输入没问题,经1K电阻后电压异常,导致BQ76930采集到的数据错误;怀疑是电池和BQ76930接入方式错误。