A vehicle includes a traction battery having a plurality of battery cells and a balance circuit configured to selectively discharge one or more of the battery cells. A controller is programmed to estimate charge capacities of the battery cells and determine a standard deviation of the estimated capacities. The controller is further programmed to determine a skewness of the estimated capacities. The controller is also programmed to, in response to the skewness exceeding a first threshold, command the balance circuit to discharge one or more of the battery cells when a state of charge (SOC) of the traction battery is less than a second threshold, and, in response to the skewness being less than the first threshold, command the balance circuit to discharge one or more of the battery cells when the SOC of the traction battery is greater than the second threshold.


    Access

    Download


    Export, share and cite



    Title :

    BALANCING CELLS OF A TRACTION BATTERY USING STATISTICAL ANALYSIS


    Contributors:
    WANG RUI (author) / YANG XIAO GUANG (author) / ZHANG YUAN (author) / WANG XU (author)

    Publication date :

    2021-05-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung



    Balancing cells of a traction battery using statistical analysis

    WANG RUI / YANG XIAO GUANG / ZHANG YUAN et al. | European Patent Office | 2022

    Free access

    BALANCING CELLS OF A TRACTION BATTERY USING STATISTICAL ANALYSIS

    WANG RUI / YANG XIAOGUANG / ZHANG YUAN et al. | European Patent Office | 2021

    Free access

    Dual traction battery power system with charge balancing circuit

    CHEN LIHUA / KURUVEGA BORIS / GE BAOMING | European Patent Office | 2024

    Free access

    Dual traction battery power system with charge balancing circuitry

    CHEN LIHUA / CURUVIJA BORIS / GE BAOMING | European Patent Office | 2024

    Free access

    DUAL TRACTION BATTERY POWER SYSTEM WITH CHARGE BALANCING CIRCUITRY

    CHEN LIHUA / CURUVIJA BORIS / GE BAOMING | European Patent Office | 2024

    Free access