Qi无线充电系统电压增益特性研究  

Research on Voltage Gain Characteristics of Qi Wireless Charging System

作　　者：雷会友 雷紫容 LEI Huiyou;LEI Zirong(Chengdu iSmartWare Micro Electronics Co.,Ltd.,Chengdu 610093,China;Mianyang Nanshan Experimental High School,Mianyang 621000,China)

机构地区：[1]成都智融微电子有限公司,四川成都610093 [2]绵阳南山中学实验学校,四川绵阳621000

出　　处：《通信电源技术》2023年第2期118-121,共4页Telecom Power Technology

摘　　要：介绍了基于感应耦合电能传输的Qi无线充电系统的系统架构,对系统功率通路上的逆变器、发射端谐振槽、接收端谐振槽和整流桥等各功能电路进行了说明;通过松耦合变压器模型和基波近似方法对系统进行建模,在等效交流电路上获得系统电压增益。并对Qi无线充电系统的电压增益特性进行了电路仿真和实验验证。The architecture of Qi wireless charging system based on inductively coupled power transmission is introduced,and the functional circuits of the system power path,such as inverter,resonant channel at the transmitting end,resonant channel at the receiving end and rectifier bridge,are described.The system is modeled by loosely coupled transformer model and fundamental wave approximation method,and the system voltage gain is obtained on the equivalent AC circuit.The voltage gain characteristics of Qi wireless charging system are simulated and verified by experiments.

关 键 词：感应耦合 松散耦合 无线充电 增益 建模 

分 类 号：TM4[电气工程—电器]