PROBLEM TO BE SOLVED: To provide a secondary battery system for a vehicle that can increase the temperature of plural secondary batteries A and B at an early stage and improve the output while suppressing precipitation of lithium under an extremely low temperature environment below -30°C.SOLUTION: When the temperatures of plural secondary batteries A and B detected based on temperature information acquired by temperature sensors A1 and B1 are lower than a predetermined temperature of not more than -30°C, a control device D sets a charging current value when the other secondary batteries are charged by a charging/discharging device C. Then, charging and discharging are performed between the plural secondary batteries by a charging/discharging device. Here, the charging current value is set on the basis of a map M in which the relationship of the temperature, the voltage or the SOC, and the maximum current value at which lithium does not deposit under charging is predetermined.SELECTED DRAWING: Figure 1

    【課題】−30℃を下回るような極低温環境下で、リチウムの析出を抑制しつつ、複数の二次電池A,Bを早期に昇温させ、出力を改善させること【解決手段】制御装置Dは、温度センサA1,B1によって取得された温度情報に基づいて検知された複数の二次電池A,Bの温度が−30℃以下の予め定められた温度よりも低い場合に、充放電装置Cが、他の二次電池を充電する際の充電電流値を設定する。そして、充放電装置によって、複数の二次電池の間で充電と放電とを行なわせる。ここで、充電電流値は、複数の二次電池について、温度と、電圧またはSOCと、充電に伴ってリチウムが析出しない最大電流値との関係が予め定められたマップMに基づいて設定される。【選択図】図1


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    Titel :

    SECONDARY BATTERY SYSTEM FOR VEHICLE


    Weitere Titelangaben:

    車両用二次電池システム


    Beteiligte:

    Erscheinungsdatum :

    25.05.2017


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    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 / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES



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