WIRELESS CHARGING METHOD AND APPARATUS THEREFOR

WIPO Patent Application WO/2019/088760

A1

An embodiment of the present invention relates to a wireless charging method in a wireless power transmitter, the method comprising: a step of sensing an object in a charging area; a step of measuring a quality factor value; a step of receiving information including a reference quality factor value; a step of detecting a foreign substance by using the measured quality factor value and the reference quality factor value; and a step of transmitting a response signal including ACK or NAK information according to whether or not the foreign substance has been detected, wherein the wireless power transmitter transmits information including a first guaranteed power value when the response signal includes ACK information, and transmits information including a second guaranteed power value when the response signal includes NAK information, wherein the first guaranteed power value is greater than the second guaranteed power value.

JP2021129423	POWER TRANSMISSION DEVICE, POWER RECEIVING DEVICE, CONTROL METHOD PERFORMED BY POWER TRANSMISSION DEVICE, CONTROL METHOD PERFORMED BY POWER RECEIVING DEVICE, AND PROGRAM
WO/2017/012979	INDUCTIVE WIRELESS POWER TRANSFER WITH SYNCHRONIZED POWER MEASUREMENT
WO/2017/076502	DEVICE FOR DETECTING AN INTERFERING METAL OBJECT IN THE EMISSION AREA OF A DEVICE FOR RECHARGING A USER APPARATUS FOR A MOTOR VEHICLE AND DETECTION METHOD

KWON YONG IL (KR)
PARK JAY (KR)

PCT/KR2018/013258

May 09, 2019

November 02, 2018

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LG INNOTEK CO LTD (KR)

H02J50/60; G01V3/00; H02J5/00; H02J7/02

KR20170118571A	2017-10-25
KR20140076626A	2014-06-20
JP2012055045A	2012-03-15
KR20150063933A	2015-06-10
KR20170107155A	2017-09-25

HAW, Yong Noke (KR)

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