To prevent completion of precharge from being erroneously determined due to a failure of a current sensor in a precharge control device.SOLUTION: A precharge control device comprises a main contactor 24, a capacitor 16, a precharge contactor 28, a current sensor 20 and a control unit 30. When starting power supply from a battery 2 to loads 10-14, the control unit closes the precharge contactor 28 and starts precharge when a detected current is equal to or less than a predetermined current. After the start of the precharge, the control unit determines that the precharge is completed, and closes the main contactor when the detected current, after having become equal to or more than a first threshold, becomes equal to or less than a second threshold.SELECTED DRAWING: Figure 1

    【課題】プリチャージ制御装置において、電流センサの故障によってプリチャージの完了が誤判定されるのを抑制する。【解決手段】プリチャージ制御装置は、メインコンタクタ24と、コンデンサ16と、プリチャージコンタクタ28と、電流センサ20と、制御部30とを備える。バッテリ2から負荷10〜14への電力供給を開始する際、制御部は、検出電流が所定電流以下であるときに、プリチャージコンタクタ28を閉じてプリチャージを開始し、プリチャージ開始後は、検出電流が第1閾値以上となり、その後、検出電流が第2閾値以下となった際に、プリチャージが完了したと判定し、メインコンタクタを閉じる。【選択図】図1


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    Title :

    PRECHARGE CONTROL DEVICE


    Additional title:

    プリチャージ制御装置


    Contributors:

    Publication date :

    2020-06-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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