A contactless power transmission device includes a power receiver (110), a power feeder (101) configured to contactlessly feed power to the power receiver (110), the power feeder (101) including a primary coil (122) configured to generate magnetic flux by an input alternating current voltage, and a cover (121) configured to cover the primary coil (122), and a capacitive sensor (106) configured to supply an alternating current voltage to an electrode (117) to measure a capacitance occurring between the electrode (117) and foreign matter (123) present around the cover (121) and thereby detect the foreign matter (123). The frequency of the alternating current voltage of the capacitive sensor (106) is set to be higher than the frequency of the magnetic flux generated by the primary coil (122).


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    Title :

    CONTACTLESS POWER TRANSMISSION DEVICE


    Additional title:

    KONTAKTLOSES ENERGIEÜBERTRAGUNGSSYSTEM
    DISPOSITIF DE TRANSFERT D'ÉNERGIE SANS CONTACT


    Contributors:

    Publication date :

    2017-03-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    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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