Journal
JOURNAL OF POWER SOURCES
Volume 268, Issue -, Pages 895-903Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2014.06.133
Keywords
Thermal stability; Remaining capacity; Sample entropy; Particle filter
Funding
- National Natural Science Foundation of China [51107021]
- Fundamental Research Funds for the Central Universities [HIT. NSRIF. 2014021]
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Currently, safety issue on Li-ion battery caused by thermal stability is one of the main factors that restricts its developmental application. In this paper, from a perspective of heat generation, we present a method to estimate remaining capacity of single Li-ion battery. Sample entropy (SampEn) is employed for the calculation of surface temperature in charging process and the relationship between SampEn and capacity fading in aging process is built. Considering various factors of capacity attenuation, an intelligent estimation approach is proposed by the combination of SampEn and particle filter (PF). (C) 2014 Elsevier B.V. All rights reserved.
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