PROBLEM TO BE SOLVED: To provide a method of disconnecting a secondary battery capable of smoothly disconnecting the secondary battery from the system while suppressing damage to a relay.SOLUTION: A control unit 30 performs an arc-less release control that includes: an abnormality detection step for detecting an abnormality in a secondary battery 20; a current shut-off step for shutting off a flow of a current to a secondary battery 20 side through a battery boost converter 22 after detecting the abnormality in the secondary battery 20; a voltage determination step for determining whether or not a capacitor voltage Vc of a capacitor 17 is greater than a battery voltage Vb of the secondary battery 20 by a predetermined value Vs; and a disconnection step in which when it is determined that the capacitor voltage Vc is greater than the battery voltage Vb by the predetermined value Vs, a relay 21 is operated to disconnect the secondary battery 20 from an electric power supply path B.SELECTED DRAWING: Figure 2

    【課題】リレーの損傷を抑制しつつ二次電池をシステムから円滑に切り離すことが可能な二次電池切り離し方法を提供する。【解決手段】制御部30は、二次電池20の異常を検知する異常検知ステップと、二次電池20の異常の検知後にバッテリ昇圧コンバータ22を通した二次電池20側への電流の流れを遮断する電流遮断ステップと、コンデンサ17のコンデンサ電圧Vcが二次電池20の電池電圧Vbに対して所定値Vsより大きいか否かを判定する電圧判定ステップと、コンデンサ電圧Vcが電池電圧Vbに対して所定値Vsより大きいと判定した際に、リレー21を作動させて二次電池20を電力供給経路Bから切り離す切り離しステップと、を含む無電弧開放制御を行う。【選択図】図2


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    Title :

    METHOD OF DISCONNECTING SECONDARY BATTERY


    Additional title:

    二次電池切り離し方法


    Contributors:
    OYA RYOSUKE (author)

    Publication date :

    2017-08-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    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 / H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / 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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