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Title:
WIRELESS POWER TRANSMITTER AND WIRELESS POWER TRANSMISSION METHOD BY WIRELESS POWER TRANSMITTER
Document Type and Number:
WIPO Patent Application WO/2022/075779
Kind Code:
A1
Abstract:
In a wireless power transmission method according to an embodiment of the present specification, a power transmission step comprises: receiving, from a wireless power receiver, a reception power packet including information related to a reception power value; stopping transmission of wireless power for a slot time on the basis of the reception power value; and detecting a foreign material on the basis of a change in voltage or current within the slot time.

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Inventors:
KIM JAEYEOL (KR)
KIM HYOUNGSEOK (KR)
LEE SEONGHUN (KR)
YOOK GYUNGHWAN (KR)
KIM HONGKWON (KR)
Application Number:
PCT/KR2021/013817
Publication Date:
April 14, 2022
Filing Date:
October 07, 2021
Export Citation:
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Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H02J50/60; H01F38/14; H02J50/12
Domestic Patent References:
WO2015194969A12015-12-23
Foreign References:
KR20180025602A2018-03-09
KR20170044495A2017-04-25
US20170273025A12017-09-21
KR20160012889A2016-02-03
Attorney, Agent or Firm:
ENVISION PATENT & LAW FIRM (KR)
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