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BQ30Z55 RSOC变化



请教下,在实际的生产过程中遇到如下问题,

BQ30Z55 烧录量产文件校准测保护--"21"开启阻抗跟踪--》0.5C充电至RSOC74%,静置30分钟---->使用EV2300下指令“10”或“21”

此时在去读取电池RSOC就发生变化,只有70%,不管是下21或10都影响RSOC,这是什么原因导致的?开关阻抗跟踪或shutdown会让ic重新计算吗?