To suppress the occurrence of a data loss and/or a malfunction due to a forced reset and suppress complete discharging of a battery due to an increase of dark current without involving cost increase.SOLUTION: A vehicular power supply control system 1 for use in controlling power supply to in-vehicle ECUs 30, 40, 50, 60, includes: an auxiliary-equipment battery 10 for supplying the plurality of ECUs 30, 40, 50, 60 with electric power; a current sensor 15 for detecting a discharge current of the auxiliary-equipment battery 10; a relay 13 that switches between a closed state and an open state; and a battery ECU 20 capable of switching the relay 13 and communicating with the plurality of ECUs 30, 40, 50, 60. In a case where a dark current value during an ignition Off is equal to or higher than a threshold, the ECU 20 first notifies the ECUs 30, 40, 50, 60 of shutting off the power, and then executes post-notification reset control for placing the relay 13 in the open state then returning it into the close state.SELECTED DRAWING: Figure 2

    【課題】コストの上昇を抑えつつ、強制リセットによるデータ消失や機能不具合の発生を抑えるとともに、暗電流の増加によるバッテリ上がりを抑制する。【解決手段】車載のECU30,40,50,60に対する電力供給を制御する車両用電源制御システム1である。複数のECU30,40,50,60に電力を供給する補機バッテリ10と、補機バッテリ10の放電電流を検出する電流センサ15と、クローズ状態とオープン状態とに切り替わるリレー13と、リレー13を切り替え可能で且つ複数のECU30,40,50,60と通信可能なバッテリECU20と、を備えている。バッテリECU20は、イグニッションOFF中における暗電流値が閾値以上の場合には、通電の遮断をECU30,40,50,60に通知した後に、リレー13をオープン状態にしてからクローズ状態に戻す通知後リセット制御を実行するように構成されている。【選択図】図2


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    Titel :

    VEHICULAR POWER SUPPLY CONTROL SYSTEM


    Weitere Titelangaben:

    車両用電源制御システム


    Beteiligte:
    MORIFUJI MASAYUKI (Autor:in) / HORITAKE SUNAO (Autor:in) / ONOYAMA HIROKI (Autor:in)

    Erscheinungsdatum :

    2022-10-17


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / 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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