Title:
POWER TRANSMISSION DEVICE, POWER TRANSMISSION AND RECEIVING DEVICE, METHOD FOR DETECTING POWER RECEIVING DEVICE, POWER RECEIVING DEVICE DETECTION PROGRAM, AND SEMICONDUCTOR DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/148315
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a power transmission device capable of highly accurate discrimination between a device placed on a secondary side and a foreign object without additional complex circuitry. The power transmission device comprises: a control unit (5a) for setting the drive frequency of a signal which drives a resonant circuit; an inverter unit (2) for driving the resonant circuit at three or more drive frequencies on the basis of the settings of the control unit (5a); and a waveform monitoring unit (4) for detecting the drive waveform of the resonant circuit. The control unit (5a), in accordance with the procedures of a program stored in a storage unit (5b), sets the three or more drive frequencies, compares signal data in each drive frequency detected by a drive waveform detection unit, and detects a power receiving device (50) on the basis of the comparison results.
Inventors:
KANNO MASAYOSHI (JP)
Application Number:
PCT/JP2014/056317
Publication Date:
September 25, 2014
Filing Date:
March 11, 2014
Export Citation:
Assignee:
DEXERIALS CORP (JP)
International Classes:
H02J7/00
Foreign References:
| JP2006230129A | 2006-08-31 | |||
| JP2010200471A | 2010-09-09 |
Attorney, Agent or Firm:
KOIKE, Akira et al. (JP)
Akira Koike (JP)
Akira Koike (JP)
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