Title:
WIRELESS POWER FEEDING DEVICE, AND WIRELESS POWER TRANSMISSION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2012/081424
Kind Code:
A1
Abstract:
A wireless power feeding device (116) can perform the wireless power feeding from a power feeding coil (L2) to a power receiving coil (L3) on the basis of a magnetic resonance phenomenon between the power feeding coil (L2) and the power receiving coil (L3). A power feeding control circuit (200) feeds an alternate current to the power feeding coil (L2) at a driving frequency (fo). The power feeding coil (L2) outputs the alternate current electric power while being not substantially resonated with a circuit element on the power feeding side. An electric power is fed to a power receiving coil circuit (130) by the action of the magnetic resonance between the power feeding coil (L2) and the power receiving coil (L3).
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Inventors:
URANO TAKASHI (JP)
Application Number:
PCT/JP2011/077927
Publication Date:
June 21, 2012
Filing Date:
December 02, 2011
Export Citation:
Assignee:
TDK CORP (JP)
URANO TAKASHI (JP)
URANO TAKASHI (JP)
International Classes:
H02J17/00
Foreign References:
| JP2010183757A | 2010-08-19 | |||
| JP2010166693A | 2010-07-29 | |||
| JP2009124878A | 2009-06-04 | |||
| JP2010252497A | 2010-11-04 |
Attorney, Agent or Firm:
WASHIZU Mitsuhiro et al. (JP)
Mitsuhiro Washizu (JP)
Mitsuhiro Washizu (JP)
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Claims: