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BQ4050: Max Error 更新值是8%

xiaotian YI
Prodigy 50 points
Part Number: BQ4050


    各位大佬请问，Max Error更新值是8%，是哪个值设定有问题？我采用的是固定EDV， 设定值:Design Capacity mAhrlrl容量为：6200mAh, EDV0=3000mAh、EDV1=3073mAh、EDV2=3146mAh,老化后 Learned Fui Charge Capacity容量为6253mAh    手册说FCC更新容量下降不超过256 mAh 上升不超过512 mAh都是正常, 6253-6200=上升不超过53mAh，什么原因导致Max Error更新不到2%？

  • 0
    Prodigy 50 points

    Part Number: BQ4050

    各位大佬请问，Max Error更新值是8%，是哪个值设定有问题？我采用的是固定EDV， 设定值:Design Capacity mAhrlrl容量为：6200mAh, EDV0=3000mAh、EDV1=3073mAh、EDV2=3146mAh,老化后 Learned Fui Charge Capacity容量为6253mAh    手册说FCC更新容量下降不超过256 mAh 上升不超过512 mAh都是正常, 6253-6200=上升不超过53mAh，什么原因导致Max Error更新不到2%？

  • 0
    TI__Guru*** 130456 points

    您好，The Max Error should update when the device has had a qualified discharge to the EDV2 voltage which will cause it to update the learned Full Charge Capacity. If the Full Charge Capacity is never updated, the accuracy of the gauging will decrease over time as the battery ages.