Journal
JOURNAL OF POWER SOURCES
Volume 196, Issue 23, Pages 10314-10321Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2011.08.040
Keywords
Lithium-ion batteries; State of health; Remaining useful life; Dempster-Shafer theory; Bayes updating; Monte Carlo
Funding
- Prognostics and Health Management Consortium at CALCE
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A new method for state of health (SOH) and remaining useful life (RUL) estimations for lithium-ion batteries using Dempster-Shafer theory (DST) and the Bayesian Monte Carlo (BMC) method is proposed. In this work, an empirical model based on the physical degradation behavior of lithium-ion batteries is developed. Model parameters are initialized by combining sets of training data based on DST. BMC is then used to update the model parameters and predict the RUL based on available data through battery capacity monitoring. As more data become available, the accuracy of the model in predicting RUL improves. Two case studies demonstrating this approach are presented. (C) 2011 Elsevier B.V. All rights reserved.
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