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BQ78350-R1: RESET前SOC100%,reset后soc为7%

user6569090
Part Number: BQ78350-R1

CEDV已经提交完成且已经修改对应的参数，有如下两个问题：1 将电池充满电后，SOC显示99%，但是我点击RESET后，SOC变成7%，完全不对

2：校准电流后，20A放电时电流初始是对的，但是随着时间推移，电流值慢慢增大，半个小时候大约涨到26A，但充电的电流是准确的’

附件是我提交生成的报告及提交的log文件5270.GPCPackaged.zip

  • 0
    TI__Guru*** 130456 points

    您好

    1，At reset or boot the capacity is estimated using the chemistry data loaded the gauge and the cell voltage. The gauge will attempt to underestimate the state of charge so the system does not expect more capacity than is available. The error is set to 100% so that the system knows it is an estimate.
     If the wrong chemistry for the cells is loaded the estimate will be wrong.
     If the battery was idle and the cells are at rest, the estimate maybe good. If the battery was in use either in charge or discharge, the estimate may be high or low since the cells are not relaxed.
     Also the gauge's estimate will be for the full capacity of the selected chemistry. If the voltage range is reduced to extend the cycle life of the pack, the estimate will not be as good.

    2， 20A放电请确认是不是横流放电。如果是恒流放电，电流是不会增加的。