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BQ20Z65 电流校准问题



线路板在CC校准为0mA,2A电流校准之后进过测试后装成整机电池,电池经过充放电循环后有约10%电池不充不放时电流在0-3mA跳动,在某种情况下想让电池shutdown状态,但current偶尔会大于0mA,shutdown功能便会失效。请问之前CC已校准到0mA,为什么电池充放电循环后current不保持0mA?这种异常情况通过重新校准CC到0mA可以解决,但仍然担心之后是否会出现不充不放电流不为0mA的现象。盼复!急!