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COIL UNIT AND APPARATUS FOR DETECTING FOREIGN MATTER

  • US 20150145530A1
  • Filed: 11/26/2014
  • Published: 05/28/2015
  • Est. Priority Date: 11/28/2013
  • Status: Active Grant
First Claim
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1. A coil unit, which is used for a contactless power transmission from power feeding side to power receiving side, comprising a coil for power transmission and an apparatus for detecting foreign matter,wherein, the apparatus for detecting foreign matter comprises a plurality of resonators comprising a resonance coil and a resonance capacitor, and an excitation coil for exciting the plurality of resonators,wherein, the plurality of resonators are disposed so as to cover at least an area interlinking with a magnetic flux generated by the coil for power transmission and to decrease an influence of mutual inductance.

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