Simulation Study and Experimental Verification of a Universal Contactless Battery Charging Platform With Localized Charging Features

• Published in: IEEE transactions on power electronics Vol. 22; no. 6; pp. 2202 - 2210
• Main Authors: Xun Liu, Hui, S.Y.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.11.2007; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Applied sciences; Batteries; Battery; Battery charger; Charging; Computer platforms; Computer simulation; Consumer electronics; Design optimization; Electric batteries; Electrical engineering. Electrical power engineering; Electrical equipment; Electromagnetic forces; Electronic equipment and fabrication. Passive components, printed wiring boards, connectics; Electronics; Exact sciences and technology; Excitation; Finite element analysis; Finite element method; Finite element methods; finite element simulation; Iron; Magnetic fields; Magnetic multilayers; Magnetic shielding; Miscellaneous; Platforms; selective excitation; shielding; Simulation; Transformers and inductors; Various equipment and components; Visualization; Electric transformer; Numerical method; Electromagnetic shielding; Optimal design; Finite element method; Magnetic field; Multilayered circuit; Machine windings; Battery chargers; Electronic equipment; Electromagnetism; Printed circuit board; finite element simulation; Shielding; Battery charging; Experimental study; Field distribution; selective excitation; System simulation; Battery charger; Portable equipment; Printed circuit; Consumer electronics; Comparative study; Planar technology
• ISSN: 0885-8993; 1941-0107
• DOI: 10.1109/TPEL.2007.909301

This paper presents a finite-element (FE) simulation study of a planar contactless battery charging platform for portable consumer electronic equipment. Magnetic field plots of the charging platform are generated under no-load and loaded conditions so that the field distribution of the planar charging platform can be visualized. Three working modes of the platform have been investigated and compared, including full excitation and two forms of selective excitation. With new results arising from this FE simulation study and practical experiments, the theory of the magnetomotive force (mmf) generation of the multilayer planar printed-circuit-board winding array structure can be further understood. The results obtained in this paper provide a foundation of understanding for future design and optimization of planar contactless charging platforms. In addition, it has been confirmed that an electromagnetic shield structure that has been applied to coreless planar transformer applications, can work equally well for the planar charging platform.