Title:
MULTI-COIL BASED WIRELESS POWER TRANSMISSION DEVICE AND METHOD
Document Type and Number:
WIPO Patent Application WO/2019/004753
Kind Code:
A1
Abstract:
The present invention relates to a multi-coil based wireless power transmission device and method. Disclosed in the present specification is a wireless power transmission device comprising: a primary coil array forming a magnetic coupling with a secondary coil, which is provided in a wireless power reception device, so as to transmit wireless power to the wireless power reception device; a plurality of inverters connected to a plurality of primary coils one-to-one so as to selectively drive each of the plurality of primary coils; a communication and control unit, which controls the plurality of inverters and communication with the wireless power reception device such that at least one primary coil is driven on the basis of the degree of magnetic coupling formed by each primary coil and the secondary coil, thereby determining output, which can be provided by the primary coil array, within a value obtained by summing all the maximum outputs individually set to the respective primary coils. In an intermediate power level wireless power transmission system, a non-chargeable state due to coil misalignment can be compensated for on the basis of multi-coils, an expanded design of a charging area at low cost is simple, and the degree of freedom of the position or the alignment of a reception device can be increased.
Inventors:
KIM SUNGKYU (KR)
SEO JEONGKYO (KR)
PARK JINMOO (KR)
LEE SEONGHUN (KR)
KWAK BONGSIK (KR)
LEE JAESUNG (KR)
LEE JIHYUN (KR)
YOOK GYUNGHWAN (KR)
PARK JOONHO (KR)
CHO YOUNGCHAN (KR)
SEO JEONGKYO (KR)
PARK JINMOO (KR)
LEE SEONGHUN (KR)
KWAK BONGSIK (KR)
LEE JAESUNG (KR)
LEE JIHYUN (KR)
YOOK GYUNGHWAN (KR)
PARK JOONHO (KR)
CHO YOUNGCHAN (KR)
Application Number:
PCT/KR2018/007357
Publication Date:
January 03, 2019
Filing Date:
June 28, 2018
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H02J50/90; H01F38/14; H02J5/00; H02J7/02; H02J50/60; H02J50/80
Foreign References:
| KR20110137393A | 2011-12-22 | |||
| KR20160057278A | 2016-05-23 | |||
| KR20130099071A | 2013-09-05 | |||
| KR20150057963A | 2015-05-28 | |||
| KR20140012359A | 2014-02-03 |
Attorney, Agent or Firm:
ENVISION PATENT & LAW FIRM (KR)
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