Coil unit, non-contact power transmission device, non-contact power reception device, non-contact power supply system, and vehicle
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United States of America Patent
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Aug 13, 2013
Grant Date -
Feb 14, 2013
app pub date -
Apr 21, 2011
filing date -
Apr 27, 2010
priority date (Note) -
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Abstract
A coil unit performs at least one of transmission and reception of electric power using electromagnetic resonance between the coil unit and a primary resonance coil disposed to face the coil unit. The coil unit includes a secondary resonance coil that includes a plurality of coils, and that electromagnetically resonates with the primary resonance coil. A first coil among the plurality of coils is disposed in a manner such that a magnetic field generated by the first coil has a phase opposite to a phase of a magnetic field generated by at least one coil other than the first coil among the plurality of coils, with respect to a plane that faces the primary resonance coil.
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