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Patent Searching and Data


Title:
POWER SUPPLY DEVICE AND POWER SUPPLY METHOD
Document Type and Number:
WIPO Patent Application WO/2015/001745
Kind Code:
A1
Abstract:
This power supply device (100) supplies electric power to an external power reception unit (154) by means of electromagnetism. A power supply coil (104a) supplies electric power by means of electromagnetism. A power-supply-side control unit (103) acquires the frequency characteristics of the levels of the current passing through the power supply coil (104a) being supplied with electric power by a power source, specifies the number of resonant frequencies on the basis of the acquired frequency characteristics, and determines the presence/absence of the power reception unit (154) on the basis of the specified number of resonant frequencies.

Inventors:
ASAOKA NORIAKI
OHASHI OSAMU
NISHIO TSUYOSHI
KOIZUMI MASAYOSHI
Application Number:
PCT/JP2014/003298
Publication Date:
January 08, 2015
Filing Date:
June 19, 2014
Export Citation:
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Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
B60L11/18; H02J7/00
Domestic Patent References:
WO2012165242A12012-12-06
Foreign References:
JP2011177009A2011-09-08
JP2010239690A2010-10-21
JP2010136464A2010-06-17
JP2012065477A2012-03-29
Attorney, Agent or Firm:
FUJII, Kentaro et al. (JP)
Fujii Kentaro (JP)
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