Design of a contactless cellular phone charging platform

LI Juan, ZHENG Meifen, ZHANG Yu, YAO Yingying

(College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China)

Abstract: Aiming at charging mobile phone and other small electronic device,the contactless power transmission principle  was discussed  Three measures were taken to achieve stable and high efficiency charging for small electronic equipment including improving the system working frequency, capacitance compensation and circuit topology The planar inductor was used to be  instead of the traditional belt core of the loosely coupled transformer in electromagnetic energy transmission to realize the multiload operation The results indicate that it not only completes a single mobile phone charging system, but also uses the theory on the charging platform design Based on a simple modification of mobile phone, the results show that the charger can be omitted through noncontact charging, which is simple and convenient

Key words: contactless charging; planar inductor; charging platform; multiple loads