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Title:
POWER TRANSMISSION DEVICE AND NONCONTACT POWER SUPPLY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/064955
Kind Code:
A1
Abstract:
A noncontact power supply system comprising a power transmission device having a power-transmitting-side resonance circuit containing a power-transmitting-side coil, and a power reception device having a power-receiving-side resonance circuit containing a power-receiving-side coil, and capable of transmitting and receiving power using magnetic resonance, wherein a control circuit of the power transmission device supplies a prescribed determination-use AC voltage to the power-transmitting-side resonance circuit prior to power transmission, and detects the current amplitude of the power-transmitting-side coil at that time. Next, the current amplitude detection value (VR) is compared to a prescribed reference value (VRREF), and if the current amplitude detection value is equal to or less than the reference value it is determined that appropriate power reception is possible, and the execution of power transmission is permitted; otherwise, the execution of power transmission is restricted.

Inventors:
IKEFUJI YOSHIHIRO (JP)
Application Number:
PCT/JP2016/076547
Publication Date:
April 20, 2017
Filing Date:
September 09, 2016
Export Citation:
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Assignee:
ROHM CO LTD (JP)
International Classes:
H02J50/90; H02J7/00; H02J50/12; H02J50/60; H02J50/80; H04B5/02
Foreign References:
JP2014239638A2014-12-18
JP2014155304A2014-08-25
JP2014183731A2014-09-29
JP2012075200A2012-04-12
Attorney, Agent or Firm:
SANO PATENT OFFICE (JP)
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