To reduce tolerance dose, volume and costs for a resistive element for a battery charging/discharging device.SOLUTION: A ground fault detection circuit 16 is connected with a feed line 15 connecting a charging/discharging connector 11 which is connected with an external battery 22 and a charging/discharging capacitor 14 which is connected with a DC/AC inverter 13. A serial circuit of a first relay 17 and a double use resistive element 18 is inserted between the ground fault detection circuit and the charging/discharging capacitor, and a second relay 20 is connected in parallel with the serial circuit. A circuit breaker 21 for discharge is connected between a connection point N1 between the first relay and the double use resistive element and a grounding part. When the circuit breaker for discharge is turned on from a state in which the second relay is on, the second relay is switched to an off state before turning on of the circuit breaker for discharge, and after that, the circuit breaker for discharge is turned on.SELECTED DRAWING: Figure 1

    【課題】バッテリ充放電装置につき、抵抗素子についての耐量の低減、体積の縮小、コストの低減を図る。【解決手段】外部のバッテリ22に接続される充放電コネクタ11とDC/ACインバータ13に接続される充放電用コンデンサ14をつなぐ給電ライン15に地絡検出回路16が接続されている。地絡検出回路と充放電用コンデンサとの間で第1のリレー17および兼用抵抗素子18の直列回路が挿入され、直列回路に第2のリレー20が並列接続されている。第1のリレーと兼用抵抗素子との接続点N1と接地部との間に放電用の開閉器21が接続されている。第2のリレーがオンの状態から放電用の開閉器をオンするときには、それに先だって第2のリレーをオフ状態に切り替え、その後に放電用の開閉器をオンにする。【選択図】図1


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    Title :

    BATTERY CHARGING/DISCHARGING DEVICE


    Additional title:

    バッテリ充放電装置


    Contributors:

    Publication date :

    2019-09-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / 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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