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1. (WO2018077204) SELF-ADAPTIVE TUNING SYSTEM, APPARATUS, AND METHOD FOR USE IN WIRELESS ELECTRIC ENERGY TRANSMISSION

Pub. No.:    WO/2018/077204    International Application No.:    PCT/CN2017/107734
Publication Date: Fri May 04 01:59:59 CEST 2018 International Filing Date: Fri Oct 27 01:59:59 CEST 2017
IPC: H02J 7/02
H02J 50/12
Applicants: CHENGDU YICHONG WIRELESS POWER TECHNOLOGY CO., LTD
成都市易冲无线科技有限公司
Inventors: PAN, Siming
潘思铭
HE, Dawei
贺大玮
LI, Tun
李暾
Title: SELF-ADAPTIVE TUNING SYSTEM, APPARATUS, AND METHOD FOR USE IN WIRELESS ELECTRIC ENERGY TRANSMISSION
Abstract:
A self-adaptive tuning circuit system, apparatus, and method for use in a wireless electric energy transmission system comprising an inductor and a capacitor. The input may be configured to receive an alternating current (AC) power supply. An RC circuit may comprise a resistor and a power supply capacitor, a first diode being configured to be positively biased when the AC power is positive in order to charge the power supply capacitor, and the second diode being configured to be positively biased when the AC power is negative in order to minimise the power discharge from the power supply capacitor. The provided tuning logic is used for controlling the power from the power supply capacitor to the tuning circuit comprising a tuning capacitor and a switch apparatus, the tuning circuit being configured to be connected in parallel with a capacitor of a wireless power transmission system.