A vehicle battery diagnosis apparatus includes: a measurement unit configured to measure a battery cell voltage; and a controller configured to diagnose a cell voltage deviation based on the battery cell voltage. The controller calculates a self-discharge rate for each cell based on the battery cell voltage and a parking time and calculates the cell voltage deviation based on the battery cell voltage, and when the calculated cell voltage deviation is greater than a preset cell balancing reference voltage deviation, the controller compares cell balancing capacitance calculated based on a vehicle usage time with a maximum self-discharge rate among the calculated self-discharge rates for respective cells and determines whether cell balancing is enabled or diagnoses the cell voltage deviation.


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    Title :

    VEHICLE BATTERY DIAGNOSIS APPARATUS, BATTERY DIAGNOSIS METHOD THEREOF, AND VEHICLE INCLUDING VEHICLE BATTERY DIAGNOSIS APPARATUS


    Contributors:
    PARK MAN JAE (author) / LEE JOONG WOO (author) / BAE JIN GEUN (author) / LEE MYUNG WON (author)

    Publication date :

    2020-12-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / G07C TIME OR ATTENDANCE REGISTERS , Zeit- oder Anwesenheitskontrollgeräte



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