A battery diagnosis device for a battery including a parallel connection structure of unit cells according to an aspect of the present disclosure includes a data acquisition unit configured to collect charge/discharge data including a voltage time series indicating a time-dependent change of a voltage across the battery and a current time series indicating a time-dependent change of a charge/discharge current flowing through the battery; and a data processing unit configured to determine an estimated capacity value indicating a full charge capacity of the battery based on the charge/discharge data. The data processing unit is configured to diagnose an abnormality in the parallel connection structure by monitoring a time-dependent change of the estimated capacity value.


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    Title :

    BATTERY DIAGNOSIS DEVICE, BATTERY MANAGEMENT SYSTEM, BATTERY PACK, ELECTRIC VEHICLE, AND BATTERY DIAGNOSIS METHOD


    Additional title:

    BATTERIEDIAGNOSEVORRICHTUNG, BATTERIEVERWALTUNGSSYSTEM, BATTERIEPACK, ELEKTROFAHRZEUG UND BATTERIEDIAGNOSEVERFAHREN
    DISPOSITIF DE DIAGNOSTIC DE BATTERIE, SYSTÈME DE GESTION DE BATTERIE, BLOC-BATTERIE, VÉHICULE ÉLECTRIQUE ET PROCÉDÉ DE DIAGNOSTIC DE BATTERIE


    Contributors:

    Publication date :

    2023-10-04


    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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