標題: Built-in Resistance Compensation (BRC) Technique for Fast Charging Li-Ion Battery Charger
作者: Lin, Chia-Hsiang
Huang, Hong-Wei
Chen, Ke-Horng
電控工程研究所
Institute of Electrical and Control Engineering
關鍵字: Li-Ion cell;charger;fast-charging
公開日期: 2008
摘要: This paper presents a BRC technique to speed up the charging time of the Li-Ion battery. Based on the physical properties of the battery cell, the charger circuit charges the cell with three stages, which are trickle current (TC), constant current (CC), and constant voltage (CV) stages. Due to the internal parasitic resistance of the Li-Ion battery pack system, the charger circuit switches from the CC stage to the CV stage without fully charging the cell to the rated voltage value. At the CV stage, the cell is needed to be charged by a degrading current. The longer the cell stays at the CV stage, the longer the charging time is due to the degrading current. The BRC technique can dynamically estimate the internal resistance of the battery pack system to extend the period of the CC stage. The test chip was fabricated in TSMC 0.35-mu m process. Experimental results show the period of the CC stage can extended to about 40% that of the original design. The charging time can be effectively reduced.
URI: http://hdl.handle.net/11536/1264
ISBN: 978-1-4244-2018-6
期刊: PROCEEDINGS OF THE IEEE 2008 CUSTOM INTEGRATED CIRCUITS CONFERENCE
起始頁: 33
結束頁: 36
顯示於類別:會議論文