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Title:
SHAPE OF WIRELESS POWER TRANSMISSION COIL AND COIL CONFIGURATION METHOD
Document Type and Number:
WIPO Patent Application WO/2018/004130
Kind Code:
A1
Abstract:
An electromagnetic resonance-type wireless power transmitter according to one embodiment of the present invention may comprise: a power conversion unit including a converter capable of converting a voltage received from a power supply unit into a particular voltage; a power transmission unit including a wireless power transmission coil for receiving the particular voltage from the power conversion unit and wirelessly transmitting power, using a particular resonance frequency; a communication unit capable of performing data communication with a wireless power receiver; and a control unit for controlling the power conversion unit, the power transmission unit, and the communication unit, wherein the wireless power transmission coil may comprise an outer coil part having a first loop shape, and an inner coil part disposed within the first loop shape and having a second loop shape, the direction of a current flowing through the outer coil part may be opposite to that of a current flowing through the inner coil part adjacent to the outer coil part, and the direction of a magnetic field generated by the outer coil part may be identical to that of a magnetic field generated by the inner coil part in a first area between the outer coil part and the inner coil part adjacent to the outer coil part.

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Inventors:
BAE SU HO (KR)
Application Number:
PCT/KR2017/005368
Publication Date:
January 04, 2018
Filing Date:
May 24, 2017
Export Citation:
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Assignee:
LG INNOTEK CO LTD (KR)
International Classes:
H02J50/12; H02J7/02; H02J50/80
Domestic Patent References:
WO2014109460A12014-07-17
WO2015167099A12015-11-05
WO2013141620A12013-09-26
Foreign References:
US20130241300A12013-09-19
KR20150090179A2015-08-05
Other References:
See also references of EP 3480918A4
Attorney, Agent or Firm:
PARK, Young Bok et al. (KR)
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