Title:
WIRELESS CHARGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/170460
Kind Code:
A1
Abstract:
The present application discloses a wireless charging device, coupled to an antenna and a battery, for use in charging the battery according to an electric field signal received from the antenna. The wireless charging device comprises a low-frequency blocking circuit, a rectifier circuit, a charging path control circuit, a filter capacitor, an overvoltage protection circuit, a battery management circuit, a near field communication controller, and a matched filter circuit. The low-frequency blocking circuit is used for blocking low-frequency noise in the electric field signal. The rectifier circuit is used for converting the electric field signal into a direct current signal. The charging path control circuit is used for connecting or disconnecting a charging path for a battery according to a charging control signal. The filter capacitor is used for smoothing the waveform of the direct current signal when the charging path is connected. The overvoltage protection circuit is used for reducing the voltage value of the direct current signal when the voltage of the direct current signal exceeds a threshold. The battery management circuit is used for providing charging power to the battery according to the direct current signal. The near field communication controller is used for generating the charging control signal.
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Inventors:
LI JIANXIONG (CN)
WANG HAIXIANG (CN)
WANG HAIXIANG (CN)
Application Number:
PCT/CN2021/076189
Publication Date:
August 18, 2022
Filing Date:
February 09, 2021
Export Citation:
Assignee:
SHENZHEN GOODIX TECH CO LTD (CN)
International Classes:
H02J50/12; H02J50/80; H04B5/00
Foreign References:
| CN111817448A | 2020-10-23 | |||
| CN105245019A | 2016-01-13 | |||
| CN108767999A | 2018-11-06 | |||
| US20200227943A1 | 2020-07-16 |
Attorney, Agent or Firm:
TIANTAI LAW FIRM (CN)
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