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Contactless power transmitting device

  • US 20050134213A1
  • Filed: 11/04/2004
  • Published: 06/23/2005
  • Est. Priority Date: 11/05/2003
  • Status: Active Grant
First Claim
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1. A contactless power transmitting device, comprising:

  • a power transmitting device;

    a power transmitting-receiving sharing device; and

    a power receiving device, wherein the power transmitting device includes;

    a first coil; and

    a power transmitting means producing an alternating current supplied to the first coil if electromagnetically coupling the first coil to one of a second coil and a third coil;

    the power transmitting-receiving sharing device includes;

    the second coil;

    a first secondary battery;

    a power transmitting means producing an alternating current supplied to the second coil using the first secondary battery as a power supply if electromagnetically coupling the second coil to the third coil; and

    a power receiving means converting an alternating current induced in the second coil to a direct current if electromagnetically coupling the second coil to the first coil to charge the first secondary battery with the converted direct current; and

    the power receiving device includes;

    the third coil;

    a second secondary battery; and

    a power receiving means converting an alternating current induced in the third coil to a direct current if electromagnetically coupling the third coil to one of the first coil and the second coil to charge the second secondary battery with the converted direct current.

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