RESONANCE-TYPE NON-CONTACT CHARGING APPARATUS

  • US 20100156346A1
  • Filed: 12/23/2009
  • Published: 06/24/2010
  • Est. Priority Date: 12/24/2008
  • Status: Active Grant
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First Claim
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1. A resonance type non-contact charging apparatus comprising:

  • a high frequency power source;

    a primary side resonance coil that receives a high frequency power from the high frequency power source;

    a secondary side resonance coil arranged separated from and in a non-contact manner with respect to the primary side resonance coil, the secondary side resonance coil receiving a power from the primary side resonance coil through magnetic field resonance between the primary side resonance coil and the secondary side resonance coil;

    a charger that receives the high frequency power from the secondary side resonance coil;

    a power ratio detecting section that detects a ratio of a reflected power from the primary side resonance coil to the high frequency power source with respect to an output power from the high frequency power source to the primary side resonance coil; and

    a stop control section that stops the high frequency power source when the ratio detected by the power ratio detecting section becomes greater than or equal to a predetermined threshold value.

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