Design of a contactless battery charger for cellular phone
- 1 December 2001
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Industrial Electronics
- Vol. 48 (6), 1238-1247
- https://doi.org/10.1109/41.969404
Abstract
In this paper, the design of a contactless charger for the lithium-ion battery of a cellular phone is presented. In this charger, the primary core of the transformer is in the charger unit and the secondary core is in the telephone. The gap (3 mm) between them is the thickness of the two plastic cases. The transformer core design for the maximum coupling coefficient with the size constraint on the secondary side is presented. Analysis of the primary-side series resonant power converter with the loosely coupled transformer is performed, and the design optimization is presented. For the battery-charging control, a simple control circuit is presented and its performance is verified from the experimental results.Keywords
This publication has 15 references indexed in Scilit:
- Lithium ion battery performance and charge controlPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Software safety protection for lithium-ion batteriesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- A noncontact charger using a resonant converter with parallel capacitor of the secondary coilPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Universal charge algorithm for telecommunication batteriesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Practical study on wireless transmission of power and information for autonomous decentralized manufacturing systemIEEE Transactions on Industrial Electronics, 1999
- A contactless electrical energy transmission systemIEEE Transactions on Industrial Electronics, 1999
- An energy transmission system for an artificial heart using leakage inductance compensation of transcutaneous transformerIEEE Transactions on Power Electronics, 1998
- A magnetic coupled charger with no-load protectionIEEE Transactions on Magnetics, 1998
- Signal transmission for implantable medical devices using figure-of-eight coilsIEEE Transactions on Magnetics, 1996
- Numerical method for the performance of a separate-type transformer connected to battery chargerIEEE Transactions on Magnetics, 1995