Title:
DEVICE AND METHOD FOR PERFORMING POWER ALLOCATION AND OUT-BAND ACTIVATION BY USING SHORT-RANGE COMMUNICATION IN WIRELESS POWER TRANSMISSION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2020/166784
Kind Code:
A1
Abstract:
The present invention relates to a device and method for performing power allocation and out-band activation by using short-range communication in a wireless power transmission system. A wireless power receiver device may comprise: a power pick-up circuit configured to receive power wirelessly from a wireless power transmitter device including a plurality of primary coils by magnetic coupling to the wireless power transmitter device at an operating frequency and to convert an alternating current signal induced by the wireless power into a direct current signal; a communication/control circuit receiving the direct current signal supplied from the power pick-up circuit and including an in-band communication module which communicates with the wireless power transmitter device by using the operating frequency, and an out-band communication module which communicates with the wireless power transmitter device by using any frequency except for the operating frequency; and a load configured to receive the direct current signal supplied from the power pick-up circuit, wherein the communication/control circuit transmits a message informing of the start of power allocation negotiation, to other wireless power receiver devices by using the out-band communication module.
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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/KR2019/013589
Publication Date:
August 20, 2020
Filing Date:
October 16, 2019
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H02J50/80; H02J5/00
Foreign References:
KR101743071B1 | 2017-06-02 | |||
KR20190000363A | 2019-01-02 | |||
KR20130027403A | 2013-03-15 | |||
US20160365747A1 | 2016-12-15 |
Other References:
SUZHI BI: "Wireless Powered Communication Networks: An Overview", IEEE WIRELESS COMMUNICATIONS, 31 August 2015 (2015-08-31), pages 1 - 17, XP011607843, DOI: 10.1109/MWC.2016.7462480
Attorney, Agent or Firm:
ENVISION PATENT & LAW FIRM (KR)
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