PROBLEM TO BE SOLVED: To provide a vehicular power supply device capable of avoiding such a situation that a vehicle becomes unable to travel at an occurrence of relay failure, by an inexpensive configuration.SOLUTION: A main relay 17 is interposed between a main battery 11 and a sub-battery 12. The sub-battery 12 is connected in parallel to the main battery 11 in a state where the main relay 17 is turned on, and the sub-battery 12 is electrically cut off from the main battery 11 in a state where the main relay 17 is tuned off. When a failure occurs such that a contact point does not open in the main relay 17, the power generation mount of ISG3 is regulated and thereby, the current input to or output from the sub-battery 12 is made to 0.

    【課題】低コストな構成により、リレーの故障発生時に車両が走行不能となることを回避できる、車両用電源装置を提供する。【解決手段】メインバッテリ11とサブバッテリ12との間には、メインリレー17が介装されている。メインリレー17がオンの状態で、サブバッテリ12がメインバッテリ11に並列に接続され、メインリレー17がオフの状態で、サブバッテリ12がメインバッテリ11から電気的に切り離される。メインリレー17に接点が開かない故障が発生すると、ISG3の発電量が調整されて、サブバッテリ12に入出力される電流が0にされる。【選択図】図1


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    Title :

    VEHICULAR POWER SUPPLY DEVICE


    Additional title:

    車両用電源装置


    Contributors:

    Publication date :

    2015-07-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen / 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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