Title:
RESONANT TRANSMITTING POWER-SUPPLY DEVICE AND RESONANT TRANSMITTING POWER-SUPPLY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2015/097809
Kind Code:
A1
Abstract:
This resonant transmitting power-supply device is provided with the following: a pulse input circuit (134) that inputs voltage pulses to a transmission antenna (2) at set intervals; a resonant-frequency-varying circuit (11) that, when a voltage pulse is inputted by the pulse input circuit (134), varies the resonant frequency of the transmission antenna (2) so as to perform resonant-frequency sweep detection; a frequency-characteristics detection circuit (12) that detects the frequency characteristics of the transmission antenna (2) when the resonant-frequency-varying circuit (11) performs the aforementioned resonant-frequency sweep detection; a foreign-object detection circuit (136) that uses detection results from the frequency-characteristics detection circuit (12) to detect the presence or absence of foreign objects in an electromagnetic field generated by the transmission antenna (2); and a power control circuit (137) that reduces or stops the supply of power to the transmission antenna (2) if a foreign object has been detected by the foreign-object detection circuit (136).
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Inventors:
AKUZAWA YOSHIYUKI (JP)
SAKAI KIYOHIDE (JP)
EZOE TOSHIHIRO (JP)
ITO YUKI (JP)
SAKAI KIYOHIDE (JP)
EZOE TOSHIHIRO (JP)
ITO YUKI (JP)
Application Number:
PCT/JP2013/084838
Publication Date:
July 02, 2015
Filing Date:
December 26, 2013
Export Citation:
Assignee:
MITSUBISHI ELECTRIC ENG (JP)
International Classes:
H02J50/00; H02J50/05; H02J50/12; H02J50/40; H02J50/60
Foreign References:
| JP2012016171A | 2012-01-19 | |||
| JP2011083078A | 2011-04-21 |
Attorney, Agent or Firm:
TAZAWA, Hideaki et al. (JP)
Hideaki Tazawa (JP)
Hideaki Tazawa (JP)
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