A battery diagnosis apparatus according to the present disclosure is for diagnosis of a cell group including a plurality of battery cells connected in series, and includes a voltage sensing circuit configured to periodically generate a voltage signal indicating a cell voltage of each battery cell; and a control circuit configured to generate time series data indicating a change in cell voltage of each battery cell over time based on the voltage signal. The control circuit is configured to (i) determine a first average cell voltage and a second average cell voltage of each battery cell based on the time series data, wherein the first average cell voltage is a short term moving average, and the second average cell voltage is a long term moving average, and (ii) detect an abnormal voltage of each battery cell based on a difference between the first average cell voltage and the second average cell voltage.


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    Title :

    BATTERY DIAGNOSIS DEVICE, BATTERY DIAGNOSIS METHOD, BATTERY PACK, AND VEHICLE


    Additional title:

    BATTERIEDIAGNOSEVORRICHTUNG, BATTERIEDIAGNOSEVERFAHREN, BATTERIEPACK UND FAHRZEUG
    DISPOSITIF DE DIAGNOSTIC DE BATTERIE, PROCÉDÉ DE DIAGNOSTIC DE BATTERIE, BLOC-BATTERIE ET VÉHICULE


    Contributors:

    Publication date :

    2024-01-03


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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