Aspects of the disclosure include a battery management system that actively limits the operational voltage of a cell to avoid a cell pressure surge in response to an indicator of battery cell degradation. An exemplary battery management system can include a memory, computer readable instructions, and one or more processors that perform operations that include: measuring a first cell pressure of a cell of the battery pack at a reference voltage and measuring a second cell pressure of the cell of the battery pack at the reference voltage. A moving average of cell pressure progression is determined from the first cell pressure and the second cell pressure. Responsive to the moving average of cell pressure progression exceeding a cell pressure progression threshold, the cell of the battery pack is identified as a degraded cell and an estimate of remaining cycles for the degraded cell is determined.


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    Title :

    OPERATIONAL VOLTAGE LIMITATIONS FOR BATTERIES


    Contributors:
    ZHU YONGJIE (author) / LEE CHUNHAO J (author) / JIANG MENG (author) / CHANG CHEN-FANG (author) / NAIK SANJEEV M (author)

    Publication date :

    2025-01-02


    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 / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY



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