关键词: 电池电量, 充电状态, 精确测量

Abstract: With the development of the battery usage，the accurate measurement of battery capacity is getting more and more important.This paper firstly discusses the disadvantage of the current measurement solution，then it also takes many factors which can affect the measurement of battery capacity into account mainly based on the Ampere Hours counting.According to different states of battery to adjust the weighting of these factors，this paper presents a new solution for battery capacity measurement after the voltage and current solution are combined and the temperature compensation is involved.This solution has been implemented to the application engineering projects with more data of experiment and application engineering to verify its usefulness.The precision of battery capacity measurement is controlled within 1%，and the solution is feasible for accurate measurement of battery capacity.

Key words: battery capacity, state of charge, accurate measurement