TY - GEN
T1 - Combined estimation of State-of-Charge and State-of-Health of Li-ion battery cells using SMO on electrochemical model
AU - Dey, Satadru
AU - Ayalew, Beshah
AU - Pisu, Pierluigi
N1 - Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 2014
Y1 - 2014
N2 - Advanced battery management systems require accurate information of battery State-of-Charge (SOC) and State-of-Health (SOH) for diagnostics and prognostics as well as for efficient capacity utilization. In this paper, an integrated SOC and SOH estimation scheme is presented that applies sliding modes on an electrochemical model for Li-ion battery cell. The electrochemical model is selected and progressively reduced to sufficiently describe the relevant temporal and spatial evolution of Li-ion concentration in each electrode. The proposed estimation scheme is comprised of three sub-estimators which work jointly: two separate adaptive sliding mode observers (SMO) for estimation of Li-ion concentration and film resistance, and a separate parameter estimator for the solid state diffusion coefficient of negative electrode. Convergence of the observers has been proven using Lyapunov's stability theory. Simulation results are included to demonstrate the effectiveness of the overall scheme.
AB - Advanced battery management systems require accurate information of battery State-of-Charge (SOC) and State-of-Health (SOH) for diagnostics and prognostics as well as for efficient capacity utilization. In this paper, an integrated SOC and SOH estimation scheme is presented that applies sliding modes on an electrochemical model for Li-ion battery cell. The electrochemical model is selected and progressively reduced to sufficiently describe the relevant temporal and spatial evolution of Li-ion concentration in each electrode. The proposed estimation scheme is comprised of three sub-estimators which work jointly: two separate adaptive sliding mode observers (SMO) for estimation of Li-ion concentration and film resistance, and a separate parameter estimator for the solid state diffusion coefficient of negative electrode. Convergence of the observers has been proven using Lyapunov's stability theory. Simulation results are included to demonstrate the effectiveness of the overall scheme.
UR - http://www.scopus.com/inward/record.url?scp=84906807339&partnerID=8YFLogxK
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U2 - 10.1109/VSS.2014.6881140
DO - 10.1109/VSS.2014.6881140
M3 - Conference contribution
AN - SCOPUS:84906807339
SN - 9781479955664
T3 - Proceedings of IEEE Workshop on Applications of Computer Vision
BT - VSS 2014 - Proceedings of 13th International Workshop on Variable Structure Systems
PB - IEEE Computer Society
T2 - 13th International Workshop on Variable Structure Systems, VSS 2014
Y2 - 29 June 2014 through 2 July 2014
ER -