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1. (WO2018021665) LOCATION CHECKING METHOD AND APPARATUS FOR WIRELESS POWER RECEIVER

Pub. No.:    WO/2018/021665    International Application No.:    PCT/KR2017/005366
Publication Date: Fri Feb 02 00:59:59 CET 2018 International Filing Date: Thu May 25 01:59:59 CEST 2017
IPC: H02J 50/80
H02J 50/90
H02J 7/02
Applicants: LG INNOTEK CO., LTD.
엘지이노텍(주)
Inventors: JUNG, Woo Kil
정우길
Title: LOCATION CHECKING METHOD AND APPARATUS FOR WIRELESS POWER RECEIVER
Abstract:
The present invention relates to a location checking method and apparatus for a wireless power receiver. A method for controlling a wireless power transmitter according to an embodiment of the present invention may comprise the steps of: transmitting power to a wireless power receiver identified using ping signals that are transmitted during a first time; halting power transmission to the identified wireless power receiver during a pre-determined time if a power transmission halt condition is satisfied; after the pre-determined time has passed, transmitting ping signals to the wireless power receiver during a second time that is shorter than the first time; receiving acknowledgement signals with respect to the ping signals from the wireless power receiver during the second time; and determining whether the wireless power receiver is located in a charging region using the acknowledgement signals.