WIRELESS CHARGING PAD HAVING PLURALITY OF SMALL POWER TRANSMISSION COILS IN WIRELESS POWER TRANSMISSION SYSTEM, AND DEVICE AND METHOD FOR DRIVING WIRELESS CHARGING PAD - UNIV INDUSTRY COOPERATION GROUP KYUNG HEE UNIV

Title:

WIRELESS CHARGING PAD HAVING PLURALITY OF SMALL POWER TRANSMISSION COILS IN WIRELESS POWER TRANSMISSION SYSTEM, AND DEVICE AND METHOD FOR DRIVING WIRELESS CHARGING PAD

Document Type and Number:

WIPO Patent Application WO/2019/103241

Kind Code:

A1

Abstract:

A wireless charging pad having a plurality of small power transmission coils, and a device and a method for driving the wireless charging pad are disclosed. The pad comprises: a driving control unit for generating a first control signal so as to apply a first driving voltage having a first phase to a power transmission coil to be driven, which is matched with a device to be charged, among the plurality of small power transmission coils, and generating a second control signal so as to apply, to the peripheral power transmission coils, a second driving voltage having a phase opposite to the first phase; and a coil driving unit for applying the first driving signal and the second driving signal to the wireless charging pad.

Inventors:

LEE BOM SON (KR)
KIM JOON HWAN (KR)
HONG EEN KEE (KR)
KIM GUN YOUNG (KR)

Application Number:

PCT/KR2018/002019

Publication Date:

May 31, 2019

Filing Date:

February 19, 2018

Export Citation:

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Assignee:

UNIV INDUSTRY COOPERATION GROUP KYUNG HEE UNIV (KR)

International Classes:

H02J50/40; H01F38/14; H02J7/02

Domestic Patent References:

WO2015177860A1

2015-11-26

Foreign References:

KR20160147238A	2016-12-22
KR20150055087A	2015-05-20
KR20130119585A	2013-11-01
US20170005481A1	2017-01-05
KR20120117262A	2012-10-22

Other References: