Title:
CONTACTLESS POWER TRANSMISSION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/024362
Kind Code:
A1
Abstract:
According to the present invention, a control circuit controls a power supply circuit so as to generate transmission power having a frequency that changes in a predetermined frequency range. On the basis of the detection value of an output voltage of a power reception device, the control circuit determines a stable transmission frequency, which indicates the frequency of the transmission power when the dependency of the output voltage of the power reception device upon a load value of the power reception device is at least locally minimized in the frequency range. On the basis of the detection value of the output voltage of the power reception device, the control circuit determines a power transmission voltage, which indicates the voltage of the transmission power for setting the output voltage of the power reception device to a predetermined target voltage when generating transmission power having the stable transmission frequency. The control circuit controls the power supply circuit so as to generate transmission power having the stable transmission frequency and the power transmission voltage.
Inventors:
MISHIMA TAICHI (JP)
ITO YUKI (JP)
NAGAOKA SHINGO (JP)
UEMATSU TAKESHI (JP)
ITO YUKI (JP)
NAGAOKA SHINGO (JP)
UEMATSU TAKESHI (JP)
Application Number:
PCT/JP2019/030776
Publication Date:
February 11, 2021
Filing Date:
August 05, 2019
Export Citation:
Assignee:
OMRON TATEISI ELECTRONICS CO (JP)
International Classes:
H02J50/80; H02J50/60
Foreign References:
| JP2018186702A | 2018-11-22 | |||
| JP2017112787A | 2017-06-22 | |||
| US20170101016A1 | 2017-04-13 | |||
| JP2017093094A | 2017-05-25 |
Other References:
See also references of EP 4012887A4
Attorney, Agent or Firm:
YAMAO, Norihito et al. (JP)
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