Journal
JOURNAL OF POWER SOURCES
Volume 273, Issue -, Pages 413-422Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2014.09.108
Keywords
Optimal charging current pattern; Taguchi method; Adaptive switching gain sliding mode observer; State of charge estimation; Lithium polymer batteries
Funding
- Commonwealth of Australia, through the Cooperative Research Centre for Advanced Automotive Technology (AutoCRC) under the project of Electric Vehicle Control Systems and Power Management [C2-801]
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In this paper, a new charging strategy of lithium-polymer batteries (LiPBs) has been proposed based on the integration of Taguchi method (TM) and state of charge estimation. The TM is applied to search an optimal charging current pattern. An adaptive switching gain sliding mode observer (ASGSMO) is adopted to estimate the SOC which controls and terminates the charging process. The experimental results demonstrate that the proposed charging strategy can successfully charge the same types of LiPBs with different capacities and cycle life. The proposed charging strategy also provides much shorter charging time, narrower temperature variation and slightly higher energy efficiency than the equivalent constant current constant voltage charging method. (C) 2014 Elsevier B.V. All rights reserved.
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