To facilitate start-up of a vehicle when battery exhaustion of a low-voltage battery occurs in the vehicle.SOLUTION: An electric connection box 10 has a special simple power supply 25. An internal circuit of the electric connection box 10 supplies an output of the simple power supply 25 as operation voltage of a DC/DC converter and starts the DC/DC converter when battery exhaustion of a low-voltage battery occurs. When the DC/DC converter is started, power of high voltage stored by a high-voltage battery on a vehicle is stepped down and can be supplied to a circuit on the low-voltage battery side, so that a normal start operation such as an engine start becomes possible. An emergency start mode can be selected by a switch operation of a user or automatic detection of voltage drop of power supply.SELECTED DRAWING: Figure 1

    【課題】車両において低圧バッテリのバッテリ上がりが生じた場合に、車両の始動を容易にすること。【解決手段】電気接続箱10が特別な簡易電源25を装備している。電気接続箱10の内部回路は、低圧バッテリのバッテリ上がりが生じた場合に、簡易電源25の出力をDC/DCコンバータの動作電圧として供給し、DC/DCコンバータを起動する。DC/DCコンバータが起動すると、車両上の高圧バッテリが蓄積している高電圧の電力を降圧して低圧バッテリ側の回路に供給できるので、エンジン始動等の通常の始動動作が可能になる。ユーザのスイッチ操作、又は電源電圧低下の自動検出により非常時始動モードを選択できる。【選択図】図1


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    Title :

    VEHICULAR ELECTRIC CONNECTION BOX


    Additional title:

    車両用電気接続箱


    Contributors:

    Publication date :

    2024-04-08


    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 / F02N STARTING OF COMBUSTION ENGINES , Anlassen 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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