A method of estimating remaining battery power in electric vehicles is provided. The method uses coulometric detection method to obtain remaining battery power and uses an open voltage method to modify the coulometric detection method when modified conditions are met as well as different battery characteristics and conditions when in use. The remaining battery power in electric vehicles can conduct a dispersion degree detection at every stage and when a detection value is larger than a preset value, a self-adjusting mechanism will be activated to modify the battery power. When the battery is charged for a longer period of time, a regression method is used to establish a modified equation to increase precision of estimating remaining battery power.

Applied Country	Category	專利狀態	證書號	專利權期間	研究成果公告日期
US	Elecric vehicle technology	獲證	CN103176129B	2016/03/02~2031/12/20
CN	Elecric vehicle technology	獲證	CN103176129B	2016/03/02~2031/12/20