A deterioration degree calculating apparatus for a secondary battery of the invention includes: obtaining a voltage value at a stop time of charge and discharge of a target secondary battery; obtaining a voltage value at a first start time of charge and discharge after that; obtaining an SOC of the target secondary battery at the stop time or at the start time; obtaining a length of an unused period from the stop time to the start time (an elapsed time); obtaining a self-discharge slope of the target secondary battery by dividing an absolute value of a difference between the voltage value at the start time and the voltage value at the stop time by the elapsed time; obtaining a temperature during an unused period by use of a self-discharge map in which the SOC and the self-discharge slope is recorded for each temperature; calculating a progress degree of deterioration of the target secondary battery during the unused period based on the obtained temperature and elapsed time; and accumulating the calculated deterioration progress degree to accurately calculate the deterioration degree of the secondary battery without continuously consuming electric power during the unused period.


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    Title :

    DETERIORATION DEGREE CALCULATING APPARATUS FOR SECONDARY BATTERY, VEHICLE EQUIPPED WITH THE APPARATUS, AND DETERIORATION DEGREE CALULATING METHOD FOR SECONDARY BATTERY


    Additional title:

    VORRICHTUNG ZUR BERECHNUNG DES VERSCHLEISSGRADES EINER SEKUNDÄRBATTERIE, FAHRZEUG DAMIT UND VERFAHREN ZUR BERECHNUNG DES VERSCHLEISSGRADES EINER SEKUNDÄRBATTERIE
    DISPOSITIF DE CALCUL DU DEGRÉ DE DÉTÉRIORATION D'UN ACCUMULATEUR SECONDAIRE, VÉHICULE COMPORTANT CELUI-CI ET PROCÉDÉ DE CALCUL DU DEGRÉ DE DÉTÉRIORATION D'UN ACCUMULATEUR SECONDAIRE


    Contributors:

    Publication date :

    2017-01-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    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 / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES



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