Title:
DEVICE AND METHOD FOR WIRELESS POWER TRANSFER TO MULTIPLE DEVICES USING MULTI-COIL
Document Type and Number:
WIPO Patent Application WO/2020/149492
Kind Code:
A1
Abstract:
The present invention relates to a device and method for wireless power transfer to multiple devices using a multi-coil. The device disclosed in the specification comprises: a power pickup unit configured to receive wireless power from a wireless power transfer device having a plurality of primary coils at an operation frequency by magnetic coupling to the wireless power transfer device and convert an alternating current signal generated by the wireless power into a direct current signal; a communication/control unit including an in-band communication module configured to be supplied with the direct current signal from the power pickup unit and perform communication with the wireless power transfer device by using the operation frequency, and an out-band communication module configured to perform communication with the wireless power transfer device by using a frequency other than the operation frequency; and a load configured to be supplied with the direct current signal from the power pickup unit. In a one-to-multiple wireless power transfer system using a multi-coil, various applications of wireless power can be efficiently supported by defining configuration information, control information, management information, and procedures for the exchanges thereof as an out-band communication protocol.
Inventors:
CHOI JINGU (KR)
LIM JINKWON (KR)
SONG TAEYOUNG (KR)
PARK YONGCHEOL (KR)
PARK JOONHO (KR)
LIM JINKWON (KR)
SONG TAEYOUNG (KR)
PARK YONGCHEOL (KR)
PARK JOONHO (KR)
Application Number:
PCT/KR2019/012956
Publication Date:
July 23, 2020
Filing Date:
October 02, 2019
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H02J50/90; H02J7/02
Foreign References:
| KR20140124709A | 2014-10-27 | |||
| KR20140076626A | 2014-06-20 | |||
| US20120306433A1 | 2012-12-06 | |||
| KR20130044494A | 2013-05-03 | |||
| KR20140136536A | 2014-12-01 |
Attorney, Agent or Firm:
ENVISION PATENT & LAW FIRM (KR)
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