Title:
POWER MATCHING METHOD AND APPARATUS FOR WIRELESS CHARGING, AND WIRELESS CHARGING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2020/220174
Kind Code:
A1
Abstract:
Disclosed are a power matching method and apparatus for wireless charging, and a wireless charging apparatus. The method comprises: receiving first sensed information sensed from a transmitting coil of a wireless transmitting terminal; detecting, according to the first sensed information, whether a resonant frequency is changed; and when the resonant frequency is changed, adjusting the capacity of a capacitor in the transmitting coil of the wireless transmitting terminal and/or adjusting the inductance of an inductor in the transmitting coil, so that the transmitting power of the wireless transmitting terminal matches the receiving power of a wireless receiving terminal. The first sensed information comprises a first sensed voltage value or a first sensed current value. According to the method, the problems of decrease in charging efficiency and heating of the wireless receiving terminal caused by the change in resonant frequency can be effectively avoided. (FIG. 2)
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Inventors:
WAN SHIMING (CN)
Application Number:
PCT/CN2019/084857
Publication Date:
November 05, 2020
Filing Date:
April 28, 2019
Export Citation:
Assignee:
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD (CN)
International Classes:
H02J50/12
Foreign References:
| CN103595262A | 2014-02-19 | |||
| CN105229896A | 2016-01-06 | |||
| CN103944277A | 2014-07-23 | |||
| CN105914903A | 2016-08-31 | |||
| JPH0795271A | 1995-04-07 |
Other References:
See also references of EP 3955417A4
Attorney, Agent or Firm:
SHENZHEN LUNGTIN LIANDING INTELLECTUAL PROPERTY AGENT LTD. (CN)
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