This battery capacity estimation device is provided with: a condition variable acquisition unit which acquires standard variable values (Tstd, Istd, V1std, V2std) indicating a standard charging condition in a secondary battery and measurement variable values (Tmes, Imes, V1mes, V2mes) indicating an actual charging condition obtained by measurement; and a capacity estimation unit which estimates the maximum capacity from a relationship between the standard variable values and the measurement variables acquired by the condition variable acquisition unit, wherein the capacity estimation unit calculates an apparent capacity (ΔQmes/ΔSOC) by using a uniform calculation method regardless of a change in charging condition, and estimates the maximum capacity (Qmax) by adding, to the apparent capacity, a correction amount obtained by using the differences between the measurement variables and the standard variables.


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    Title :

    Battery capacity estimation device, method and program


    Contributors:

    Publication date :

    2020-12-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES



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