Title:
ACCESS CONTROL METHOD AND DEVICE IN WIRELESS POWER TRANSMISSION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2020/246685
Kind Code:
A1
Abstract:
The present invention relates to an access control method and device in a wireless power transmission system. A wireless power transmission device comprises: a power conversion circuit configured to have a plurality of primary coils and transmit wireless power to a wireless power reception device by using the primary coil which has formed magnetic coupling to the wireless power reception device at an operating frequency; and a communication/control circuit configured to perform in-band communication with the wireless power reception device by using the operating frequency and perform out-band communication with the wireless power reception device by using a frequency other than the operating frequency, wherein the communication/control circuit can transmit information for notifying whether or not connection to the wireless power reception device is possible by using the out-band communication.
Inventors:
CHOI JINGU (KR)
LIM JINKWON (KR)
LEE MINSOO (KR)
PARK JOONHO (KR)
KIM JAEHYU (KR)
PARK YONGCHEOL (KR)
LIM JINKWON (KR)
LEE MINSOO (KR)
PARK JOONHO (KR)
KIM JAEHYU (KR)
PARK YONGCHEOL (KR)
Application Number:
PCT/KR2020/001428
Publication Date:
December 10, 2020
Filing Date:
January 30, 2020
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H02J50/80; H02J50/10; H02J50/40; H02J50/90
Domestic Patent References:
| WO2018093099A1 | 2018-05-24 | |||
| WO2016179271A1 | 2016-11-10 | |||
| WO2019059427A1 | 2019-03-28 |
Foreign References:
| KR20160041571A | 2016-04-18 | |||
| KR20120068412A | 2012-06-27 |
Attorney, Agent or Firm:
ENVISION PATENT & LAW FIRM (KR)
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