王杰,高星冉,邓其军.基于BUCK降压和红外通信的电动自行车无线充电系统功率控制方法[J].电测与仪表,2020,57(23):92-100. Wang Jie,Gao Xingran,Deng Qijun.A methodology of output power control for electric bike wireless charging systems based on BUCK circuit and infrared communication[J].Electrical Measurement & Instrumentation,2020,57(23):92-100.
基于BUCK降压和红外通信的电动自行车无线充电系统功率控制方法
A methodology of output power control for electric bike wireless charging systems based on BUCK circuit and infrared communication
Due to the virtues of safety and convenience, outdoor wireless charging for electric bikes has been an emerging necessity for citizens. However, during the charging process, the transmitted power needs to be regulated to meet the charging curves of the electric bike-mounted batteries. To realize efficient and controllable wireless charging for electric bikes, a power regulating methodology based on BUCK circuit and infrared communication is proposed. Here, the infrared link is used to feed the charging state of battery back to the controller of transmitter, while the BUCK circuit at the transmitting side is used to regulate the voltage amplitude of the AC driving source, thus regulating the transmitted power. The BUCK circuit at the receiving side is used to protect the battery from the sudden change of transfer distance. With two parameters of charging voltage limit and charging current limit given, the battery can be charged automatically according to its charging curve using the proposed methodology. Besides, the proposed methodology can also realize fast response to distance variation during the charging process.
