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BQ40Z80 FCC(full charging capacity)满充容量偏低

Other Parts Discussed in Thread: BQ40Z80

我们在使用BQ40Z80设计6/7串电池包时,电量计是经过完整老化学习的,CHEM_ID正确,配置设计正确;发现电量计的FCC值总不能有效更新为实际满充容量,FCC显示值偏小,而实际老化是可以放出更多容量的,电量计的QMAX能更新到8000左右,但FCC只显示7259,且3次循环后仍不能有效更新为实际放出容量,且电池包静置几天后FCC会缓慢降低。