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CONTACTLESS POWER TRANSMISSION DEVICE, CONTACTLESS POWER RECEPTION DEVICE, AND CONTACTLESS POWER TRANSMISSION SYSTEM

  • US 20170126067A1
  • Filed: 04/01/2015
  • Published: 05/04/2017
  • Est. Priority Date: 04/23/2014
  • Status: Active Grant
First Claim
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1. A contactless power transmission device which transmits power to a contactless power reception device including a power reception side coil and a power reception-side resonator which resonates with the power reception side coil, the device comprising:

  • a power transmission unit which includesa power transmission side coil;

    a transmission-side resonator that resonates with the power transmission side coil; and

    an inverter that supplies power to the transmission-side resonator,wherein at least one of an inductance value of the power transmission side coil and a capacitance value of the power transmission-side resonator is set such that a frequency range in which a phase difference of a primary side current flowing in the power transmission unit with respect to a primary side voltage applied to the power transmission unit is equal to or more than 0 is wider than the frequency range in a case where an inductance value of the power reception side coil is equal to the inductance value of the power transmission side coil and a capacitance value of the power reception-side resonator is equal to the capacitance value of the power transmission-side resonator.

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