POWER TRANSMISSION DEVICE, WIRELESS POWER SUPPLY SYSTEM, AND WIRELESS POWER SUPPLY DEVICE

  • US 20120119914A1
  • Filed: 01/23/2012
  • Published: 05/17/2012
  • Est. Priority Date: 07/23/2009
  • Status: Active Grant
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First Claim
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1. A power transmission device comprising:

  • a power supply unit configured to supply power by a resonance frequency for magnetic resonance;

    a power transmission resonance coil capable of magnetic resonance with a power reception resonance coil in said resonance frequency, the power transmission resonance coil being configured to supply said power from said power supply unit as magnetic field energy caused by said magnetic resonance;

    a temperature detector provided in said power transmission resonance coil; and

    a control unit configured to refer to a table stored in a memory expressing an allowable temperature range, determine whether a detected temperature detected by said temperature detector at an elapsed time is within said allowable temperature range at said elapsed time, and stop an operation of said power supply unit when said detected temperature is not within said allowable temperature range.

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