Title:
WIRELESS POWER SUPPLY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2014/136391
Kind Code:
A1
Abstract:
A wireless power supply system includes a plurality of primary coils (L1) and a movable secondary coil (L2). The primary coils (L1) excited by the supply of high-frequency current are configured so as to generate an alternating magnetic field by which secondary power is generated in the secondary coil (L2). The resonance characteristics of a resonator including excited primary and secondary coils vary with the movement of the secondary coil within a variation range. The power supply frequency (fn) of the high-frequency current is set to the frequency (fp) corresponding to the intersection point (P) between a first resonance characteristic line (A1) and a second resonance characteristic line (A2), which correspond to the respective two ends of the variation range of the resonance characteristics and are farthest apart from each other.
Inventors:
OGASAWARA KIYOSHI
ABE HIDEAKI
AKIYAMA TOSHIHIRO
ABE HIDEAKI
AKIYAMA TOSHIHIRO
Application Number:
PCT/JP2014/000883
Publication Date:
September 12, 2014
Filing Date:
February 20, 2014
Export Citation:
Assignee:
PANASONIC CORP (JP)
International Classes:
H01F38/14
Foreign References:
| JP2002249285A | 2002-09-03 | |||
| JP2005289101A | 2005-10-20 | |||
| JP2013027132A | 2013-02-04 | |||
| JP2009290251A | 2009-12-10 | |||
| JP2011199975A | 2011-10-06 |
Other References:
See also references of EP 2985866A4
Attorney, Agent or Firm:
ONDA, Makoto et al. (JP)
Makoto Onda (JP)
Makoto Onda (JP)
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