PROBLEM TO BE SOLVED: To provide a current cutoff device capable of suppressing an increase in external size together with diameter reduction of a wire harness and reduction of weight.SOLUTION: A current division section 11 branches a flow path of a current i1 into a plurality of flow paths, a first current cutoff circuit 12 including a fusible link is connected to one flow path 15, and a second current cutoff circuit 13 including semiconductor switch circuits 13a, 13b is connected to the other flow path 16. Resistance values of respective circuits are adjusted so that a ratio between a current i2 of the flow path 15 and a current i3 of the flow path 16 becomes a fixed ratio. Since a cutoff current of the fusible link is reduced, wire diameters of an upstream side wire 22 and a downstream side wire 23 required to be matched with the cutoff current can be reduced. By configuring a parallel circuit in combination with the fusible link, an increase in the external size of the second current cutoff circuit 13 can be prevented.SELECTED DRAWING: Figure 1

    【課題】ワイヤハーネスの細径化および重量の低減と共に、外形サイズの増大を抑制することが可能な電流遮断装置を提供する。【解決手段】分流部11で電流i1の流路を複数に分岐させ、一方の流路15にはヒュージブルリンクを含む第1の電流遮断回路12を接続し、他方の流路16には半導体スイッチ回路13a、13bを含む第2の電流遮断回路13を接続する。流路15の電流i2と流路16の電流i3とが一定の比率になるように、各回路の抵抗値を調整する。ヒュージブルリンクの遮断電流が小さくなるため、この電流と整合させる必要のある上流側電線22および下流側電線23の電線径を細径化できる。ヒュージブルリンクと組み合わせて並列回路を構成することにより、第2の電流遮断回路13における外形サイズの大型化も防止できる。【選択図】図1


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    Title :

    CURRENT CUTOFF DEVICE AND WIRE HARNESS


    Additional title:

    電流遮断装置及びワイヤハーネス


    Contributors:
    SATO KOKI (author) / UESONO KOICHI (author) / KOJIMA NAOYA (author) / INOUE HIROMICHI (author)

    Publication date :

    2017-08-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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