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bq30z554停止充电或放电后,current不能立即(3-5秒)归零



1. bq30z554的保护板,不论是充电或者放电,当外部负载或者电源撤掉时,即时电流current,不能立即归零,有的板子需要5-10秒才能归零。

有的板子充电时撤掉外部电源,current还会显示负电流(本来应该显示越来越小的正电流),持续10秒多才能完全归零;

2、已经试过校准coulomb couter和board offset 没有用,换过ic也不行,电容也试着换过,请问整个与底板的铜箔厚度有关系或者是其他问题?