Title:
METHOD AND APPARATUS FOR SWITCHING WIRELESS POWER TRANSMISSION MODE
Document Type and Number:
WIPO Patent Application WO/2017/209390
Kind Code:
A1
Abstract:
The present invention relates to a method and an apparatus for switching a wireless power transmission mode. According to one embodiment of the present invention, the method by which a multi-mode wireless power transmitter switches a wireless power transmission mode comprises the steps of: detecting a second wireless power receiver while transmitting the power to a first wireless power receiver; calculating second power transmission efficiency for the detected second wireless power receiver; and determining a final wireless power transmission mode by comparing the first power transmission efficiency for the first wireless power receiver with the second power transmission efficiency, wherein the multi-mode wireless power transmitter simultaneously transmits the power by using an electromagnetic induction mode and/or an electromagnetic resonance mode, and the second wireless power receiver can receive the power by using only one mode between the electromagnetic resonance mode and the electromagnetic induction mode at a time.
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Inventors:
YOO DONG HAN (KR)
KWON YONG IL (KR)
LEE JAE KYU (KR)
KWON YONG IL (KR)
LEE JAE KYU (KR)
Application Number:
PCT/KR2017/003935
Publication Date:
December 07, 2017
Filing Date:
April 12, 2017
Export Citation:
Assignee:
LG INNOTEK CO LTD (KR)
International Classes:
H02J50/12; H02J7/02; H02J50/10; H02J50/80; H02J50/90
Foreign References:
| KR20160025314A | 2016-03-08 | |||
| KR20120077444A | 2012-07-10 | |||
| US20120235509A1 | 2012-09-20 | |||
| US20150229134A1 | 2015-08-13 | |||
| KR20150077647A | 2015-07-08 |
Attorney, Agent or Firm:
PARK, Young Bok et al. (KR)
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