Title:
POWER TRANSMISSION DEVICE, POWER RECEPTION DEVICE, AND CONTACTLESS POWER SUPPLY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/006946
Kind Code:
A1
Abstract:
A contactless power supply system comprising a power transmission device having a power-transmission-side resonance circuit including a power-transmission-side coil, and a power reception device having a power-reception-side resonance circuit including a power-reception-side coil, the contactless power supply system being capable of transmitting and receiving power by magnetic field resonance, wherein the power transmission device monitors the amplitude of current flowing to the power-transmission-side coil when power is being transmitted. When a power amplitude detection value (VmFOD) is outside a prescribed normal range, foreign matter is determined to be present, and power transmission is stopped.
Inventors:
IKEFUJI YOSHIHIRO (JP)
OKUI AKIHIRO (JP)
UTSUNOMIYA KIMITAKE (JP)
OKUI AKIHIRO (JP)
UTSUNOMIYA KIMITAKE (JP)
Application Number:
PCT/JP2016/069947
Publication Date:
January 12, 2017
Filing Date:
July 05, 2016
Export Citation:
Assignee:
ROHM CO LTD (JP)
International Classes:
H02J50/12; H01F38/14; H02J7/00; H02J50/60; H04M1/04
Domestic Patent References:
| WO2015097807A1 | 2015-07-02 |
Foreign References:
| JP2014183731A | 2014-09-29 |
Other References:
See also references of EP 3322068A4
Attorney, Agent or Firm:
SANO PATENT OFFICE (JP)
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