本論文建構衝擊式線上殘電量測系統,使用微控制器搭配可程式邏輯閘及周邊IC來實現,利用演算法計算出Index(SOC),並測試不同受測電池對不同負載放電,討論Index(SOC)的變化及誤差,經過實驗後驗證利用Index(SOC)進行殘電量查表,得到準確的殘電量結果可行性高。 This thesis is to develop an on-line state-of-charge(SOC) estimation. Use the micro-controller, field programmable gate array and integrated circuit to construct it. Finally, using an algorithms to find Index(SOC) and look up table method can estimate SOC accurately.