To provide a battery charging controller for an electric vehicle, which is able to charge a consumed auxiliary machine battery by means of a simple circuit configuration without adding a charging function for the auxiliary machine battery.SOLUTION: When an auxiliary machine battery 3 is normal, a vehicle control ECU 17, an on-vehicle charger 22 and a DC-DC converter 23 are started by power from the auxiliary machine battery 3. When DC 12V is input to the on-vehicle control ECU 17 as a connector connection signal due to connection of charging connectors 7, 8, a drive battery 2 is charged by the on-vehicle charger 22, and the auxiliary machine battery 3 is charged by the DC-DC converter 23. When the auxiliary machine battery 3 is consumed, DC 12V of the connector connection signal, instead of power from the auxiliary machine battery 3, is supplied, through an external power supply line 52 and a fuse 54, to the vehicle control ECU 17, the on-vehicle charger 22 and the DC-DC converter 23, to start these devices 17, 22, 23.SELECTED DRAWING: Figure 1

    【課題】補機用バッテリの充電機能を追加することなく、簡素な回路構成によりバッテリ上がりした補機用バッテリを充電できる電動車両のバッテリ充電制御装置を提供することにある。【解決手段】補機用バッテリ3の正常時には、補機用バッテリ3からの電力により車両制御ECU17、車載充電器22及びDC-DCコンバータ23が起動され、充電コネクタ7,8の接続によりコネクタ接続信号としてDC12Vが車両制御ECU17に入力されると、車載充電器22により駆動用バッテリ2が充電され、DC-DCコンバータ23により補機用バッテリ3が充電される。補機用バッテリ3が上がっている場合には、補機用バッテリ3からの電力に代えて、コネクタ接続信号のDC12Vが外部電力供給線52及びヒューズ54を経て車両制御ECU17、車載充電器22及びDC-DCコンバータ23に供給されて、これらの機器17,22,23を起動する。【選択図】図1


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    Title :

    BATTERY CHARGING CONTROLLER FOR ELECTRIC VEHICLE


    Additional title:

    電動車両のバッテリ充電制御装置


    Contributors:

    Publication date :

    2019-10-03


    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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