電動交通工具之電池殘餘電量估測(ARTC)

節能電動化車輛關鍵模組技術暨產業化發展計畫

翁國樑、邱奕超、許家興

一種電動交通工具之電池殘餘電量估測，其係利用庫倫檢測法取得電池殘餘電量，並於滿足修正條件下使用開路電壓法輔助修正庫倫檢測法，並依據電池特性與不同使用情況以開路電壓法修正庫倫檢測法；且該交通工具之電池殘餘電量估測可進行電池芯於每階段的離散程度檢測，當檢測值超過設定啟動自我調整機制對電池修正電量進行修正；而當電池進行較長時間充電時，將原有電池特性以曲線回歸法方式建立修正方程式，藉以提高電池殘餘電量估測準確度。

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.