Noncontact power transmitting apparatus

  • US 5,923,544 A
  • Filed: 07/21/1997
  • Issued: 07/13/1999
  • Est. Priority Date: 07/26/1996
  • Status: Expired due to Term
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First Claim
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1. A noncontact power transmitting apparatus comprising:

  • a transmitting part including a high-frequency oscillating circuit having a parallel resonance circuit formed by a capacitor and a power-transmitting coil, said power-transmitting coil including a first power-transmitting coil portion and a second power-transmitting coil portion; and

    a receiving part including a power-receiving coil portion for inducing a voltage by electromagnetically coupling with said power-transmitting coil of said high-frequency oscillating circuit;

    in a power transmitting state in that said receiving part is magnetically coupled with the charging part, the power-receiving coil portion is inserted in a space between the first power-transmitting coil portion and the second power-transmitting coil portion, and the first power-transmitting coil portion, the power-receiving coil portion, and the second power-transmitting coil portion are arranged in such a manner that the power-receiving coil portion is located in the magnetic flux generated by the first and second power-transmitting coil portions.

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