Multistage constant-current charging method for Li-Ion batteries

This paper proposes a unique method to find the optimal charge pattern (OCP) of multistage constant-current charging (MSCCC) method by using RC based equivalent circuit model for Li-Ion batteries. Both 3 and 5 stages based MSCCC methods are discussed. The method of finding the equivalent circuit mod...

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Bibliographic Details
Published in2016 IEEE Transportation Electrification Conference and Expo, Asia-Pacific (ITEC Asia-Pacific) pp. 381 - 385
Main Authors Khan, Abdul Basit, Van-Long Pham, Thanh-Tung Nguyen, Woojin Choi
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.06.2016
Subjects
Fast charging
Li-Ion battery
Multi-stage charging
Optimal charge pattern
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Summary:This paper proposes a unique method to find the optimal charge pattern (OCP) of multistage constant-current charging (MSCCC) method by using RC based equivalent circuit model for Li-Ion batteries. Both 3 and 5 stages based MSCCC methods are discussed. The method of finding the equivalent circuit model and optimal charge pattern by equations are also explained. Experimental results with a 2.6 Ah Li-ion battery are used to validate the proposed method. The proposed method is unique in that it can charge the battery upto 100 % capacity in a shorter time. Compared with conventional CC-CV method, the charging time (CT) and the charging efficiency by the proposed method are improved by approximately 12% and 0.54% respectively.
DOI:10.1109/ITEC-AP.2016.7512982