PROBLEM TO BE SOLVED: To provide a power supply circuit device capable of protecting a circuit even in a case of ON failures of a switch.SOLUTION: In a case where no ON failure of a second switch is detected during an IG OFF state in which a first switch SW1 and the second switch SW2 are turned off, a controller 50 controls a bypass switch SW3 so that a bypass path B1 is in an energization state. On the other hand, ON failures of the second switch SW2 are detected on the basis of a detection signal from a voltage detection circuit 60, the controller 50 controls the bypass switch SW3 so that the bypass path B1 is in an energization interruption state. Thereby, in a case of ON failures of the second switch SW2, a lead accumulator battery 11 and a lithium ion accumulator battery 12 can be prevented from being unintendedly connected with each other via the bypass switch SW3.SELECTED DRAWING: Figure 1

    【課題】スイッチがオン故障した場合であっても、回路を保護することができる電源回路装置を提供すること。【解決手段】第1スイッチSW1及び第2スイッチSW2がオフされるIGオフ状態中、第2スイッチのオン故障が検出されていない場合、制御部50は、バイパス経路B1が通電の状態となるようにバイパススイッチSW3を制御する。その一方、電圧検出回路60からの検出信号に基づき、第2スイッチSW2のオン故障が検出された場合、制御部50は、バイパス経路B1が通電遮断の状態となるようにバイパススイッチSW3を制御する。これにより、第2スイッチSW2がオン故障した場合、鉛蓄電池11とリチウムイオン蓄電池12とが、バイパススイッチSW3を介して、意図せずに接続されることを防止できる。【選択図】 図1


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    Title :

    POWER SUPPLY CIRCUIT DEVICE


    Additional title:

    電源回路装置


    Contributors:

    Publication date :

    2018-06-14


    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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