采用平板型印制电路板作为能量传输设备薄型无接触充电器研制.e.pdf

140 IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOL. 51, NO. 1, FEBRUARY 2004 Design and Implementation of Low-Profile Contactless Battery Charger Using Planar Printed Circuit Board Windings as Energy Transfer Device Byungcho Choi, Member, IEEE, Jaehyun Nho, Honnyong Cha, Taeyoung Ahn, Member, IEEE, and Seungwon Choi, Member, IEEE Abstract— This paper paper presents the practical details in- volved in the design and implementation of a contactless battery charger that employs a pair of neighboring printed circuit board (PCB) windings as a contactless energy transfer device. A proto- type contactless battery charger developed for application with cel- lular phones is used as an example to address the design consid- erations for the PCB windings and energy transfer circuit, plus demonstrates the performance of the contactless charger adapted to a practical application system. Index Terms—Contactless battery charger for cellular phones, contactless energy transfer, coupled printed circuit board (PCB) (a) windings. I. INTRODUCTION ARLIER studies [1]–[3] have shown that substantial Einductive coupling exists between two spiral windings printed on the opposite sides of a double-sided printed circuit board (PCB). Accordingly, a doubled-sided PCB with spiral windings on its surfaces can be used as a substitute for a conventional core-based transformer in certain low-to-medium (b) power applications, for example, isolated gate drive circuits for