A battery performance evaluation device executes an alternating current impedance acquiring process (S1), an OCV acquiring process (S2), and an SOC estimating process (S3). The alternating current impedance acquiring process involves acquiring a measurement result of an alternating current impedance of a target secondary battery, the alternating current impedance measured by applying an application signal to the target secondary battery within a specific frequency range. The OCV acquiring process involves acquiring an OCV of the target secondary battery. The SOC estimating process involves estimating an SOC of the target secondary battery to be 0%, if an imaginary component of the measurement result of the acquired alternating current impedance at a predetermined frequency within the specific frequency range is greater than or equal to a first threshold value and the acquired OCV value is less than or equal to a second threshold value.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    BATTERY PERFORMANCE EVALUATION DEVICE, AND BATTERY PERFORMANCE EVALUATION METHOD


    Beteiligte:
    MITSUI MASAHIKO (Autor:in) / IZUMI JUNTA (Autor:in) / YASOSHIMA JUNI (Autor:in)

    Erscheinungsdatum :

    2020-07-02


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G06N COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS , Rechnersysteme, basierend auf spezifischen Rechenmodellen / 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



    Battery performance evaluation device, and battery performance evaluation method

    MITSUI MASAHIKO / IZUMI JUNTA / YASOSHIMA JUNI | Europäisches Patentamt | 2022

    Freier Zugriff

    EV battery performance evaluation method

    CHANG SOK HO / KIM HYUNG JIN / KO YONGJE et al. | Europäisches Patentamt | 2023

    Freier Zugriff

    RECHARGEABLE BATTERY EVALUATION DEVICE, RECHARGEABLE BATTERY EVALUATION METHOD, AND RECHARGEABLE BATTERY EVALUATION SYSTEM

    YAMAMOTO TAKAHIRO / KOIWA KAORU / HATANO HISAAKI et al. | Europäisches Patentamt | 2021

    Freier Zugriff

    Low Temperature Performance Evaluation of Battery Management Technologies

    Hammoud, Ahmad / Elbuluk, Malik E. / Patterson, Richard L. et al. | SAE Technical Papers | 1999


    EVALUATION DEVICE OF BATTERY

    UCHIDA MASATOSHI | Europäisches Patentamt | 2017

    Freier Zugriff