Title:
WIRELESS POWER TRANSMISSION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2019/083170
Kind Code:
A1
Abstract:
The present invention relates to a wireless power transmitter for wireless charging and a variable frequency switching mode power supplier mounted therein. A wireless power transmission apparatus according to an embodiment of the present invention comprises: a variable frequency switching mode power supplier for converting alternating current power to direct current power; a main controller for supplying a reference clock; a gate driver for generating a plurality of switch control signals by using the reference clock; an inverter for generating an alternating current power signal on the basis of the direct current power and the plurality of switch control signals; and a power transmitter for wirelessly transmitting the alternating current power signal, wherein a reference frequency of the variable frequency switching mode power supplier varies. Therefore, the present invention can provide a wireless power transmission apparatus having excellent EMI performance.
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Inventors:
CHA DAE YOUNG (KR)
Application Number:
PCT/KR2018/011221
Publication Date:
May 02, 2019
Filing Date:
September 21, 2018
Export Citation:
Assignee:
LG INNOTEK CO LTD (KR)
International Classes:
H02M1/44; H02J50/12
Domestic Patent References:
| WO2016140004A1 | 2016-09-09 |
Foreign References:
| KR20170048632A | 2017-05-10 | |||
| KR20100086720A | 2010-08-02 | |||
| KR20170042944A | 2017-04-20 | |||
| KR20170109929A | 2017-10-10 |
Attorney, Agent or Firm:
LEE, Seung Chan (KR)
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