Title:
WIRELESS POWER RECEPTION APPARATUS, WIRELESS POWER TRANSMISSION APPARATUS, AND FOREIGN MATTER DETECTION METHOD USING SAME
Document Type and Number:
WIPO Patent Application WO/2021/020833
Kind Code:
A1
Abstract:
A wireless power reception apparatus according to an embodiment of the present specification comprises: a power pickup circuit for receiving, by magnetic coupling to a wireless power transmission apparatus, wireless power from the wireless power transmission apparatus; and a communication/control circuit for communicating with the wireless power transmission apparatus and controlling the received wireless power, wherein the communication/control circuit transmits, before entering a power transmission phase, to the wireless power transmission apparatus, information regarding a first reference quality factor Qt1'(ref) measured at a first frequency f1(ref) and information regarding a second reference quality factor Qt2'(ref) measured at a second frequency f2(ref).
Inventors:
KIM KYUNGHWAN (KR)
YOOK GYUNGHWAN (KR)
KIM HYOUNGSEOK (KR)
KIM HWANYONG (KR)
YOOK GYUNGHWAN (KR)
KIM HYOUNGSEOK (KR)
KIM HWANYONG (KR)
Application Number:
PCT/KR2020/009849
Publication Date:
February 04, 2021
Filing Date:
July 27, 2020
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H02J50/60; H02J50/20; H02J50/80
Domestic Patent References:
| WO2017086804A1 | 2017-05-26 |
Foreign References:
| KR20180009294A | 2018-01-26 | |||
| KR20190082891A | 2019-07-10 | |||
| JP2014187795A | 2014-10-02 | |||
| KR20190050301A | 2019-05-10 |
Attorney, Agent or Firm:
ENVISION PATENT & LAW FIRM (KR)
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