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1. (WO2018184230) WIRELESS CHARGING SYSTEM, APPARATUS AND METHOD, AND DEVICE TO BE CHARGED

Pub. No.:    WO/2018/184230    International Application No.:    PCT/CN2017/079784
Publication Date: Fri Oct 12 01:59:59 CEST 2018 International Filing Date: Sat Apr 08 01:59:59 CEST 2017
IPC: H02J 7/00
Applicants: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
OPPO广东移动通信有限公司
Inventors: WAN, Shiming
万世铭
ZHANG, Jialiang
张加亮
Title: WIRELESS CHARGING SYSTEM, APPARATUS AND METHOD, AND DEVICE TO BE CHARGED
Abstract:
A wireless charging system, apparatus, and method, and a device to be charged. The wireless charging system (200) comprises a wireless charging apparatus (220) and a device to be charged (230), the wireless charging apparatus comprising a wireless transmitting circuit (221) used to transmit an electromagnetic signal for wirelessly charging the device to be charged; and a first communication control circuit (222) used to conduct wireless communication with the device to be charged during a wireless charging process; the device to be charged comprises: a battery (232); a wireless receiving circuit (231) used to receive an electromagnetic signal and convert the electromagnetic signal into output voltage and output current of the wireless receiving circuit; a first charging channel (233) used to receive the output voltage and output current of the wireless receiving circuit and charge the battery on the basis of the output voltage and output current of the wireless receiving circuit; a detection circuit (234) used to detect the output voltage and/or output current of the wireless receiving circuit; and a second communication control circuit (235) used to conduct wireless communication with the first communication control circuit according to the output voltage and/or output current of the wireless receiving circuit which is detected by the detection circuit, such that the first communication control circuit adjusts the transmitting power of the wireless transmitting circuit so that the output voltage and/or output current of the wireless receiving circuit match the charging phase which the battery is currently at. The wireless charging system, apparatus, and method, and the device to be charged may improve a wireless charging process.