PROBLEM TO BE SOLVED: To securely cut off a circuit if a component has been erroneously connected and to prevent frequent situations in which a circuit cannot be recovered from fusion easily.SOLUTION: A cutoff circuit is composed by connecting in parallel two fusible links 13, 14 of relatively small capacity. By making the capacity of each fusible link smaller, characteristic variations resulting from individual differences are reduced, thus improving cut-off accuracy. The resistance value of the first fusible link 13 is made smaller than the resistance value of the second fusible link 14, thereby concentrating currents on one side. After the first fusible link 13 fuses, the second fusible link 14 fuses. The two fusible links 13, 14 different in rating value of cut-off current are used. If a battery is connected in reverse polarity, current can securely be cut off.SELECTED DRAWING: Figure 1

    【課題】部品の誤接続が生じているような場合に確実に回路を遮断すると共に、溶断により回路の復旧が容易にできない状況が頻繁に生じるのを防止する。【解決手段】容量が比較的小さい2つのヒュージブルリンク13、14を並列に接続して遮断回路を構成する。各々のヒュージブルリンクの容量を小さくすることで個体差に起因する特性のばらつきが減り、遮断精度が向上する。第1ヒュージブルリンク13の抵抗値を第2ヒュージブルリンク14の抵抗値よりも小さくして、一方に電流を集中させる。第1ヒュージブルリンク13が溶断した後で、第2ヒュージブルリンク14が溶断する。遮断電流の定格値が互いに異なる2つのヒュージブルリンク13、14を使う。バッテリーが逆極性で接続された時に確実に電流を遮断できる。【選択図】図1


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    Title :

    CURRENT CUTOFF DEVICE


    Additional title:

    電流遮断装置


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