The invention relates to a method for determining a state value of a power battery of an electric vehicle, which state value characterizes a state of aging of the power battery, preferably a SoH value of the power battery, in which the power battery is charged or discharged by a test load, and at at least one point in time, the state value characterizes the state of aging of the power battery, preferably the SoH value of the power battery. A corresponding output voltage and load current value pair of the power battery is obtained, the ohmic internal resistance of the power battery is determined based on the obtained output voltage and load current value pair, and the state value of the power battery is determined based on the determined ohmic internal resistance. It is provided that at least one normalized variable characterizing the power battery is established, and a normalized internal resistance based on a reference value of the normalized variable is established based on the established ohmic internal resistance and the at least one normalized variable, where a state value of the power battery is established based on the normalized internal resistance. The invention also relates to a diagnostic device for determining a state value of a power battery of an electric vehicle, said diagnostic device having an evaluation unit which can be coupled directly or indirectly to the power battery and is designed to carry out the method.

    本发明涉及一种用于确定电动车辆的动力电池的状态值的方法,该状态值表征动力电池的老化状态,优选地表征动力电池的SoH值,其中动力电池通过测试负载充电或放电,并且在至少一个时间点,获取动力电池的相应输出电压和负载电流值对,其中基于所获取的输出电压和负载电流值对确立动力电池的欧姆内阻,并且其中基于所确立的欧姆内阻确立动力电池的状态值。提供了,确立表征动力电池的至少一个标准化变量,并且基于所确立的欧姆内阻和至少一个标准化变量,确立基于标准化变量的参考值的标准化内阻,其中基于标准化内阻确立动力电池的状态值。本发明还涉及一种用于确定电动车辆的动力电池的状态值的诊断设备,其中该诊断设备具有评估单元,该评估单元可直接或间接地耦接到动力电池并且被设置为执行该方法。


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Method for determining state value of power battery


    Weitere Titelangaben:

    用于确定动力电池的状态值的方法


    Beteiligte:
    RICHTER ANDREAS (Autor:in) / HASSLER CHRISTOPH (Autor:in) / VON GREB KIM (Autor:in) / MAURER HANS JURGEN (Autor:in) / TILGNER SIMON (Autor:in)

    Erscheinungsdatum :

    2022-07-22


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung



    METHOD FOR DETERMINING A STATE VALUE OF A TRACTION BATTERY

    RICHTER ANDREAS / HÄUSSLER CHRISTOPH / GRABE KIM VON et al. | Europäisches Patentamt | 2023

    Freier Zugriff

    Method for determining a state value of a traction battery

    RICHTER ANDREAS / HÄUSSLER CHRISTOPH / GRABE KIM VON et al. | Europäisches Patentamt | 2024

    Freier Zugriff

    Method and device for determining power limit value of power battery

    WANG WENTING / WANG SHUYANG / WANG YEBIN et al. | Europäisches Patentamt | 2023

    Freier Zugriff

    Method and device for determining state-of-charge value of power battery of vehicle

    WU MAIQING / SONG DANDAN / WANG SHENGBO et al. | Europäisches Patentamt | 2021

    Freier Zugriff

    METHOD FOR DETERMINING A STATE VALUE OF A TRACTION BATTERY

    RICHTER ANDREAS / HAUSSLER CHRISTOPH / VON GRABE KIM et al. | Europäisches Patentamt | 2023

    Freier Zugriff