Title:
WIRELESS POWER TRANSMISSION ANTENNA, AND DEVICE AND SYSTEM USING SAME
Document Type and Number:
WIPO Patent Application WO/2017/217648
Kind Code:
A1
Abstract:
The present invention relates to: a wireless power transmission antenna capable of maximizing wireless power transmission efficiency and minimizing heating; and a wireless power transmission device and a wireless charging system, which comprise the same. The wireless power transmission device according to one embodiment of the present invention can include: the wireless power transmission antenna, which has a multi-layer structure in which a charging bed, a control circuit board, and a plane-shaped spiral transmission coil, for transmitting wireless power, disposed at the lower end of the charging bed, are stacked, wherein the number of windings is different on at least one of the layers; and a shielding material disposed at a lower end of the wireless power transmission antenna so as to block a magnetic field, having been transmitted by the wireless power transmission antenna, from being transferred to the control circuit board.
Inventors:
LEE DONG HYUK (KR)
Application Number:
PCT/KR2017/003856
Publication Date:
December 21, 2017
Filing Date:
April 10, 2017
Export Citation:
Assignee:
LG INNOTEK CO LTD (KR)
International Classes:
H02J50/70; H02J7/02; H02J50/23; H05K9/00
Domestic Patent References:
| WO2013142720A1 | 2013-09-26 |
Foreign References:
| KR20150131910A | 2015-11-25 | |||
| KR101610678B1 | 2016-04-08 | |||
| KR20130049608A | 2013-05-14 | |||
| KR101181816B1 | 2012-09-11 |
Attorney, Agent or Firm:
PARK, Young Bok et al. (KR)
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