Title:
METHOD FOR DETECTING FOREIGN MATERIAL, AND APPARATUS AND SYSTEM THEREFOR
Document Type and Number:
WIPO Patent Application WO/2017/217663
Kind Code:
A1
Abstract:
The present invention relates to a method and an apparatus for detecting foreign material for wireless charging, and according to one embodiment of the present invention, a method by which a wireless power transmitter detects foreign material comprises the steps of: measuring the strength of a current inputted into an inverter in a ping step; receiving a packet including a receiver type identifier; determining a threshold value for detecting the foreign material corresponding to the receiver type identifier; and comparing the measured strength of current with the threshold value so as to determine whether the foreign material is present.
Inventors:
PARK JAE HEE (KR)
KWON YONG IL (KR)
KWON YONG IL (KR)
Application Number:
PCT/KR2017/005147
Publication Date:
December 21, 2017
Filing Date:
May 18, 2017
Export Citation:
Assignee:
LG INNOTEK CO LTD (KR)
International Classes:
H02J50/60; G01N27/20; G01V3/10; H02J5/00; H02J7/02; H02J50/80
Domestic Patent References:
| WO2013089311A1 | 2013-06-20 | |||
| WO2012091210A1 | 2012-07-05 | |||
| WO2010068062A2 | 2010-06-17 |
Foreign References:
| KR20150059069A | 2015-05-29 | |||
| US20130069441A1 | 2013-03-21 |
Attorney, Agent or Firm:
PARK, Young Bok et al. (KR)
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