PROBLEM TO BE SOLVED: To provide a vehicular power supply device capable of suppressing useless power consumption due to an abnormal movement of each electronic control unit of a power supply destination.SOLUTION: A dark current monitor circuit 15 which detects the extent of a dark current of an electric source power to be supplied to each ECU when each ECU 21 to 24 is in a sleep state is provided on a smart electric source box 10 and, when the dark current is abnormally large, a movement of the ECU is forcibly reset. States of signals of communication buses 34, 35 are monitored by using a communication interface 14 and it is discriminated whether each ECU is in a sleep state or not. When the dark current is abnormal, power supply for each ECU 21 to 24 is temporarily stopped and, then, the supply is reopened. Thereby, power-on reset is operated on each ECU 21 to 24, execution of a program is normally returned and power consumption in a sleep state is reduced.SELECTED DRAWING: Figure 1

    【課題】電力供給先の各電子制御ユニットの異常な動作による無駄な電力消費を抑制することが可能な車両用電力供給装置を提供する。【解決手段】各ECU21〜24がスリープ状態の時に、各ECUに供給される電源電力の暗電流の大きさを検出する暗電流モニタ回路15をスマート電源ボックス10に備えて、暗電流が異常に大きい場合にはECUの動作を強制的にリセットする。通信インタフェース14を用いて通信バス34、35の信号の状態を監視し、各ECUがスリープ状態か否かを識別する。暗電流が異常の場合には、各ECU21〜24に対する電力供給を一時的に遮断してから供給を再開する。これにより、各ECU21〜24にパワーオンリセットがかかり、プログラムの実行が正常に戻るので、スリープ状態における消費電力も小さくなる。【選択図】図1


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    Title :

    VEHICULAR POWER SUPPLY DEVICE


    Additional title:

    車両用電力供給装置


    Contributors:

    Publication date :

    2016-04-25


    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



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