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CONTACTLESS POWER TRANSMISSION DEVICE, AND POWER FEEDER AND POWER RECEIVER FOR USE IN THE SAME

  • US 20140183970A1
  • Filed: 03/06/2014
  • Published: 07/03/2014
  • Est. Priority Date: 10/28/2011
  • Status: Active Grant
First Claim
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1. A contactless power transmission device for transmitting power between a power feeder and a power receiver via electromagnetic induction, whereinthe power feeder includesa housing base member,a primary coil provided on the housing base member and configured to generate magnetic flux,a cover attached to the housing base member and configured to cover the primary coil,a capacitance sensor including a detection electrode between the primary coil and the cover, and configured to detect foreign matter around the cover based on a change in capacitance detected using the detection electrode, anda high-dielectric member embedded in the cover and having a permittivity higher than that of a material for the cover.

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