PROBLEM TO BE SOLVED: To provide a secondary battery residual capacity calculation device that can improve estimation accuracy of residual capacity by reducing an influence of the polarization of a secondary battery even in a case of a long-range travel by electricity supply from the secondary battery.SOLUTION: EVECU 6 includes: using an estimation SOC as it is (S7) if the estimation SOC deviates from a corrected SOC slightly (S6:YES); using a corrected SOC utilizing an electric power consumption calculated by an inverter control, a DC/DC converter control and an electrically-driven compressor control if the deviation is large (S6:NO). This can reduce the influence of the polarization of a secondary battery 2 according to a travel state, thus increasing an EV travel distance.

    【課題】二次電池からの電力供給で長距離走行した場合であっても、二次電池の分極の影響を低減して残存容量の推定精度を高めることができる二次電池残存容量算出装置を提供する。【解決手段】EVECU6は、推定SOCと補正SOCとの乖離が小さい場合は(S6:YES)、推定SOCをそのまま使用し(S7)、乖離が大きい場合は(S6:NO)、インバータ制御、DC/DCコンバータ制御、電動コンプレッサ制御で演算される電力消費量を利用した補正SOCを使用する。これにより、走行状態に応じて二次電池2の分極の影響を低減することができ、EV走行距離を伸ばすことができる。【選択図】図5


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    Title :

    SECONDARY BATTERY RESIDUAL CAPACITY CALCULATION DEVICE


    Additional title:

    二次電池残存容量算出装置


    Contributors:

    Publication date :

    2015-11-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / 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 / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung



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