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Patent Searching and Data


Title:
WIRELESS POWER SUPPLY DEVICE, WIRELESS POWER RECEIVING DEVICE, AND WIRELESS POWER TRANSMISSION SYSTEM AND COIL
Document Type and Number:
WIPO Patent Application WO/2012/118112
Kind Code:
A1
Abstract:
This wireless power supply device wirelessly supplies power from a power supply coil (L2) to a power receiving coil (L3) based on magnetic-field coupling of the power supply coil (L2) and the power receiving coil (L3). The power supply coil (L2) is formed rotatably. A power transmission control circuit supplies alternating current power to the power supply coil (L2), and thereby alternating current power is supplied from the power supply coil (L2) to the power receiving coil (L3). The power transmission control circuit also adjusts the alternating current power supplied from the power supply coil (L2) to the power receiving coil (L3) by changing the opposed surface area of the power supply coil (L2) and the power receiving coil (L3), when viewed from the direction of the axial line of the power supply coil (L2), by rotating the power supply coil (L2).

Inventors:
GOTANI AKIRA (JP)
Application Number:
JP2012/055041
Publication Date:
September 07, 2012
Filing Date:
February 29, 2012
Export Citation:
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Assignee:
TDK CORP (?1038272, JP)
GOTANI AKIRA (JP)
International Classes:
H01F38/14; H01F17/00
Foreign References:
JP2000182864A2000-06-30
JPH04368107A1992-12-21
JPH0590922U1993-12-10
JP2001044054A2001-02-16
JP2007088011A2007-04-05
JP2008235690A2008-10-02
Attorney, Agent or Firm:
WASHIZU Mitsuhiro et al. (?1040061, JP)
Mitsuhiro Washizu (?1040061, JP)
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Claims: