A vehicle (1) includes a chargeable and dischargeable battery (B1), a current sensor (11-1) for detecting electric current of the battery, and a controller (30) for estimating a state of charge of the battery and controlling charging and discharging of the battery based on the state of charge. In a first operation mode in which charging and discharging cycles are repeated, the controller (30) estimates an open-circuit voltage of the battery and determines the state of charge based on a value obtained by correcting the open-circuit voltage based on polarization. In a second operation mode in which one of charging and discharging is continued, the controller (30) determines the state of charge based on a result of integration of the current detected by the current sensor. In this way, the vehicle can be provided in which the secondary battery can be charged with and discharge a large amount of energy and can be effectively used.


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    Title :

    VEHICLE AND METHOD FOR ESTIMATING CHARGED STATE OF SECONDARY BATTERY


    Additional title:

    FAHRZEUG UND VERFAHREN ZUR SCHÄTZUNG DES LADESTATUS EINER SEKUNDÄRBATTERIE
    VEHICULE ET PROCEDE PERMETTANT D'ESTIMER L'ETAT CHARGE DE LA BATTERIE RECHARGEABLE


    Contributors:
    IZUMI JUNTA (author)

    Publication date :

    2016-03-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / 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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