To provide a secondary battery system for connecting a plurality of secondary batteries in series or parallel, and an industrial vehicle including the same, that prevent a reflux current from flowing between the secondary batteries when switching from a series connection to a parallel connection after completion of charging.SOLUTION: A secondary battery system 1 includes a control unit 2 that controls the operation of a connection circuit so that secondary batteries B1 to B3 are connected in series with each other when charging the secondary batteries B1 to B3 and controls the operation of the connection circuit so that the secondary batteries B1 to B3 are connected in parallel with each other when discharging the secondary batteries B1 to B3. The control unit 2 controls the operation of the connection circuit so that a predetermined secondary battery B is disconnected from the secondary batteries B1 to B3 that are connected in series with each other each time the charging of the predetermined secondary battery B among the secondary batteries B1 to B3 is completed when the control unit 2 charges the secondary batteries B1 to B3.SELECTED DRAWING: Figure 1

    【課題】複数の二次電池を直列接続または並列接続させる二次電池システム及びその二次電池システムを備える産業車両において、充電終了後の直列接続から並列接続への切り替え時に二次電池間に還流電流が流れることを抑制する。【解決手段】二次電池B1〜B3を充電する場合、二次電池B1〜B3が互いに直列接続されるように接続回路の動作を制御し、二次電池B1〜B3を放電する場合、二次電池B1〜B3が互いに並列接続されるように接続回路の動作を制御する制御部2を備えて二次電池システム1を構成し、制御部2は、二次電池B1〜B3を充電する場合、二次電池B1〜B3のうちの所定の二次電池Bの充電が終了する度に、所定の二次電池Bが、互いに直列接続される二次電池B1〜B3から外れるように、接続回路の動作を制御する。【選択図】図1


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    Title :

    SECONDARY BATTERY SYSTEM AND INDUSTRIAL VEHICLE


    Additional title:

    二次電池システム及び産業車両


    Contributors:
    MIYAKE KEIJI (author) / HIROSE SHINJI (author) / IEOKA SHOICHI (author) / MAE SHINICHI (author)

    Publication date :

    2021-08-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / 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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