Title:
無線電力伝送装置
Document Type and Number:
Japanese Patent JP6964693
Kind Code:
B2
Abstract:
The present invention relates to a wireless power transfer apparatus. The wireless power transfer apparatus includes: a resonant circuit unit including a plurality of coils and a plurality of capacitor elements respectively connected to the plurality of coils; and a controller configured to calculate individual quality factor of each of the plurality of coils and a total quality factor of the plurality of coils, at a resonant frequency, and calculate whether foreign matter exists on a charging surface, based on the total quality factor and the individual quality factor, at the resonance frequency. Accordingly, foreign matter on the charging surface can be detected more easily.
Inventors:
Junho Park
Song Hoonri
Bonsik Kwak
Jihyun
Sungkyu Kim
Song Hoonri
Bonsik Kwak
Jihyun
Sungkyu Kim
Application Number:
JP2020002643A
Publication Date:
November 10, 2021
Filing Date:
January 10, 2020
Export Citation:
Assignee:
LG ELECTRONICS INC.
International Classes:
H02J50/60; H02J7/00; H02J50/12; H02J50/80
Domestic Patent References:
| JP2018046746A | ||||
| JP2015053751A | ||||
| JP2013027255A | ||||
| JP2016220523A | ||||
| JP2016007124A |
Foreign References:
| US20180323658 | ||||
| US20150162785 |
Attorney, Agent or Firm:
Takeshi Katata
Kobayashi Hideyoshi
Hiroyuki Ohno
Osamu Tsuda
Matsuno Chihiro
Seiichi Sakitani
Hiroshi Nomoto
Kobayashi Hideyoshi
Hiroyuki Ohno
Osamu Tsuda
Matsuno Chihiro
Seiichi Sakitani
Hiroshi Nomoto