To provide a battery state diagnosing device and a battery state diagnosis method with which it is possible to suppress the occurrence of misdetection of a second peak due to the effect of environment noise and detect the second peak with high accuracy.SOLUTION: Sixteen (N, natural number) of latest moving average voltage values AV(moving average value, A) in measured voltage values PV(measured value, P) of voltage value V are calculated. By comparing with the immediately preceding moving average voltage value AV(moving average value, A), a rise "1" or a fall "0" is successively determined, and a change point Tc of time where the determination result turns from the rise "1" to the fall "0" is detected, with a second peak Pdetected from this change point Tc of time. The state of a battery B is diagnosed on the basis of a measured voltage value PVat this second peak P.SELECTED DRAWING: Figure 3

    【課題】環境ノイズの影響による第2ピークの誤検出の発生を抑制するとともに第2ピークを精度良く検出することができるバッテリ状態診断装置、及びバッテリ状態診断方法を提供する。【解決手段】電圧値Vの電圧計測値PVt(計測値、Pt)において直近の16(N、自然数)個の電圧移動平均値AVt(移動平均値、At)を算出する。そして、直前の電圧移動平均値AVt-1(移動平均値、At-1)と比較して上昇「1」又は下降「0」を逐次判定し、その判定結果が、上昇「1」から下降「0」に転じる変化時点Tcを検出し、この変化時点Tcから第2ピークP2を検出する。この第2ピークP2おける電圧計測値PVtに基づいてバッテリBの状態を診断する。【選択図】図3


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    Titel :

    BATTERY STATE DIAGNOSING DEVICE AND BATTERY STATE DIAGNOSIS METHOD


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    Patent


    Format :

    Elektronische Ressource



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