To provide a vehicle power source device that, even if a rare short occurs on a power source line to which a load capable of being supplied with power from two power source system is connected, is able to prevent a voltage decrease of the power source of either one of the systems.SOLUTION: A vehicle power source device comprises: a first relay circuit that connects a first load to a first system power source in an ON state and disconnects the first load from the first system power source in an OFF state; a second relay circuit that connects a second load to a second system power source in an ON state and disconnects the second load from the second system power source in an OFF state; a third relay circuit that connects a third load to the second system power source in an ON state and connects the third load to the first system power source in an OFF state; and a control unit that controls ON/OFF state of each of first, second, and third relay circuits. The control unit resets all the first, second, and third relay circuits to OFF states in a case where the voltage of the second system power source decreases to a predetermined value while all the first, second, and third relay circuits are driven in ON states.SELECTED DRAWING: Figure 1

    【課題】2つの電源系統から電源供給が可能な負荷が接続された電源線路上でレアショートが発生しても、いずれかの系統の電源電圧が低下してしまうことを防止できる車両用電源装置を提供する。【解決手段】ON状態で第1負荷を第1系統の電源に接続し、OFF状態で第1負荷を第1系統の電源から切り離す第1のリレー回路と、ON状態で第2負荷を第2系統の電源に接続し、OFF状態で第2負荷を第2系統の電源から切り離す第2のリレー回路と、ON状態で第3負荷を第2系統の電源に接続し、OFF状態で第3負荷を第1系統の電源に接続する第3のリレー回路と、第1、第2、及び第3のリレー回路のON/OFF状態を制御する制御部とを備え、制御部は、第1、第2、及び第3のリレー回路を全てON状態で駆動中に、第2系統の電源電圧が所定値まで低下した場合、第1、第2、及び第3のリレー回路を全てOFF状態にリセットする。【選択図】図1


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    Title :

    VEHICLE POWER SOURCE DEVICE


    Additional title:

    車両用電源装置


    Contributors:
    ITO JIRO (author)

    Publication date :

    2019-08-22


    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 / 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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