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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.

Inventors:
YOO, Dong Han (98 Huam-ro, Jung-gu, Seoul, 04637, KR)
KWON, Yong Il (98 Huam-ro, Jung-gu, Seoul, 04637, KR)
LEE, Jae Kyu (98 Huam-ro, Jung-gu, Seoul, 04637, KR)
Application Number:
KR2017/003935
Publication Date:
December 07, 2017
Filing Date:
April 12, 2017
Export Citation:
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Assignee:
LG INNOTEK CO., LTD. (98 Huam-ro, Jung-gu, Seoul, 04637, KR)
International Classes:
H02J50/12; H02J7/02; H02J50/10; H02J50/80; H02J50/90
Attorney, Agent or Firm:
PARK, Young Bok et al. (KPH & Associates, 2nd Floor Erum Bldg., 225-18, Pangyoyeok-ro, Bundang-gu,Seongnam-si, Gyeonggi-do, 13494, KR)
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