Title:
WIRELESS POWER TRANSMISSION DEVICE AND LOAD DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/022742
Kind Code:
A1
Abstract:
A wireless power transmission device (11) and a load device (10). The wireless power transmission device (11) comprises: a direct-current power supply (111); a first power transmission circuit (112) coupled to the direct-current power supply (111) and used for converting the direct-current voltage provided by the direct-current power supply (111) into a rectangular wave voltage and outputting power to the load device (10); a first communication circuit (113) for receiving load information sent by the load device (10); and a first control circuit (114) coupled to the first communication circuit (113) and the power transmission circuit (112) and used for modulating the power transmission circuit (112) according to the load information so as to change the duty cycle of the rectangular wave voltage. In this way, the problem of voltage fluctuations caused by a load change can be prevented, thereby improving safety.
Inventors:
ZUO YUANYANG (CN)
YIN KUNREN (CN)
HOU JUNFENG (CN)
GU SHOULIANG (CN)
YU SANYING (CN)
YIN KUNREN (CN)
HOU JUNFENG (CN)
GU SHOULIANG (CN)
YU SANYING (CN)
Application Number:
PCT/CN2019/123358
Publication Date:
February 11, 2021
Filing Date:
December 05, 2019
Export Citation:
Assignee:
GUANGDONG MIDEA WHITE HOME APPLIANCE TECH INNOVATION CENTER CO LTD (CN)
MIDEA GROUP CO LTD (CN)
MIDEA GROUP CO LTD (CN)
International Classes:
H02J50/00
Foreign References:
| CN110022006A | 2019-07-16 | |||
| CN104838562A | 2015-08-12 | |||
| CN106340974A | 2017-01-18 | |||
| CN106864293A | 2017-06-20 | |||
| CN103414259A | 2013-11-27 | |||
| US20170040843A1 | 2017-02-09 |
Attorney, Agent or Firm:
CHINA WISPRO INTELLECTUAL PROPERTY LLP. (CN)
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