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WIRELESS POWER TRANSFER APPARATUS AND WIRELESS POWER TRANSFER METHOD

  • US 20130234529A1
  • Filed: 03/05/2013
  • Published: 09/12/2013
  • Est. Priority Date: 03/08/2012
  • Status: Abandoned Application
First Claim
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1. A wireless power transfer apparatus comprising:

  • a power transmitter including a power transmission resonator composed of a power transmission coil and a resonant capacitance; and

    a power receiver including a power receiving resonator composed of a power receiving coil and a resonant capacitance,thereby transferring power from the power transmitter to the power receiver through an interaction between the power transmission coil and the power receiving coil,further comprising;

    a power-transmission auxiliary device including an auxiliary resonator composed of an auxiliary coil and a resonant capacitance;

    a resonance control unit for adjusting a resonant frequency of the auxiliary resonator; and

    a linking supporting mechanism for keeping a coil distance between the power receiving coil and the auxiliary coil constant,wherein the power transmitter and the power-transmission auxiliary device are disposed so as to face each other, forming a power receiving space for disposing the power receiving coil between the power transmission coil and the auxiliary coil, andthe resonance control unit adjusts a resonant frequency of the auxiliary resonator in accordance with a coil distance between the power transmission coil and the auxiliary coil in an axial direction, thereby optimizing receiving power supplied to the power receiver.

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