A contactless power supply system (10) is capable of contactlessly supplying electric power from a power transmission unit (220) to a power receiving unit (110). The contactless power supply system is provided with: a raising/lowering mechanism (105) for moving the power receiving unit between a standby position, and a power receiving position facing the power transmission unit; and an ECU (300) for controlling the raising/lowering mechanism. In a period in which electric power is being received from the power transmission unit after the power receiving unit has been moved into the power receiving position, in cases when the distance between the power transmission unit and the power receiving unit increases in comparison to when power reception started, the ECU activates a movement device to bring the power receiving unit closer to the power transmission unit. As a result, a reduction in power transmission efficiency during power transmission, said reduction being caused by variation in the distance between the power transmission unit and the power receiving unit, is inhibited.


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    Title :

    Power transmission device, power receiving device, vehicle, and contactless power supply system


    Contributors:

    Publication date :

    2015-11-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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