WIRELESS POWER TRANSMISSION DEVICE AND OPERATION MODE CONTROL METHOD BASED ON DETECTING WIRELESS POWER RECEPTION DEVICE BY WIRELESS POWER TRANSMISSION DEVICE

WIPO Patent Application WO/2023/058886

A1

A wireless power transmission device according to various embodiments of the present document may comprise a communication module, a power transmission circuit, and at least one processor, wherein the at least one processor is configured to: output first power for detecting of an external wireless power reception device through the power transmission circuit before wireless power transmission; identify a first phase of a first voltage and/or a first current at the output of the first power; identify a second phase of a second voltage or a second current by the wireless power reception device through the power transmission circuit during the output of the first power; identify a difference between the first phase and the second phase; identify the wireless power reception device on the basis of the difference between the first phase and the second phase; and control the power transmission circuit to transmit second power for wireless power transmission to the identified wireless power reception device. Other embodiments may also be possible.

LEE KYUNGMIN (KR)
PARK SUNGBUM (KR)
LEE SANGWOOK (KR)
CHOI BOHWAN (KR)
CHOI JINSU (KR)

PCT/KR2022/012120

April 13, 2023

August 12, 2022

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SAMSUNG ELECTRONICS CO LTD (KR)

H02J50/80; H02J7/00; H02J50/12; H02J50/40; H04B5/00

WO2013098975A1

2013-07-04

KR20130096210A	2013-08-29
KR20170035213A	2017-03-30
KR20150093588A	2015-08-18
US20180323637A1	2018-11-08

LEE, Keon-Joo et al. (KR)

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