A battery diagnosis apparatus includes a battery monitor to detect a voltage of each of a plurality of battery cells included in a battery module; and a control circuit to determine a latest value of a first voltage deviation indicating a difference between a voltage behavior of each battery cell and an average voltage behavior of the plurality of battery cells over a relaxation period from a start time of a resting event. For each battery cell, the control circuit determines a latest value of a second voltage deviation by applying a smoothing algorithm to the latest value of the first voltage deviation, determines a latest value of a third voltage deviation indicating a difference between the latest value of the first voltage deviation and the latest value of the second voltage deviation, determines a latest value of a fourth voltage deviation indicating a difference between the latest value of the third voltage deviation and a previous value of the third voltage deviation, determines a latest value of a threshold deviation using a distribution of a time series of the fourth voltage deviation having a predetermined size, and determines whether the corresponding battery cell has a micro short circuit by comparing the latest value of the third voltage deviation with the latest value of the threshold deviation..


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    Titel :

    BATTERY DIAGNOSIS APPARATUS, BATTERY PACK, ELECTRIC VEHICLE, AND BATTERY DIAGNOSIS METHOD


    Weitere Titelangaben:

    BATTERIEDIAGNOSEVORRICHTUNG, BATTERIEPACK, ELEKTROFAHRZEUG UND BATTERIEDIAGNOSEVERFAHREN
    APPAREIL DE DIAGNOSTIC DE BATTERIE, BLOC-BATTERIE, VÉHICULE ÉLECTRIQUE ET PROCÉDÉ DE DIAGNOSTIC DE BATTERIE


    Beteiligte:
    SUNG YONG-CHUL (Autor:in) / KIM CHEOL-TAEK (Autor:in)

    Erscheinungsdatum :

    2023-12-20


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

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



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