The present invention provides a battery state determining apparatus which can determine a battery state of a lead battery from an engine starting voltage accurately considering influence of a temperature of a vehicle. An engine starting voltage Vst1 obtained by correcting an engine starting voltage Vst of a lead battery at an engine starting time is calculated based upon an open-circuit voltage OCV and a temperature of a vehicle(S112), a battery determination voltage Vst_th representing a voltage of the lead battery at an engine starting time when a growth rate of internal resistance of the lead battery reaches a predetermined value from the open-circuit voltage OCV is calculated (S126), and a battery state of the lead battery is determined by determining whether an engine starting voltage Vst1 belongs to a predetermined region on a characteristic map (S132). A temperature of the lead battery measured after at least a predetermined time elapsing from engine stopping is regarded as temperature of the vehicle so that the engine starting voltage Vst1 is calculated.


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    Titel :

    BATTERY STATE JUDGING DEVICE


    Weitere Titelangaben:

    VORRICHTUNG ZUR BEURTEILUNG DES BATTERIEZUSTANDS
    DISPOSITIF D'ESTIMATION DE L'ETAT D'UNE BATTERIE


    Beteiligte:
    MACHIYAMA YOSHIAKI (Autor:in) / YAMADA KEIZO (Autor:in) / YAMADA YOSHIFUMI (Autor:in) / HARA TAKASHI (Autor:in)

    Erscheinungsdatum :

    05.12.2018


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    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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