Journal
APPLIED ENERGY
Volume 86, Issue 9, Pages 1506-1511Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.apenergy.2008.11.021
Keywords
Coulomb counting method; Lithium-ion battery; State-of-charge; State-of-health
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The coulomb counting method is expedient for state-of-charge (SOC) estimation of lithium-ion batteries with high charging and discharging efficiencies. The charging and discharging characteristics are investigated and reveal that the coulomb counting method is convenient and accurate for estimating the SOC of lithium-ion batteries. A smart estimation method based on coulomb counting is proposed to improve the estimation accuracy. The corrections are made by considering the charging and operating efficiencies. Furthermore, the state-of-health (SOH) is evaluated by the maximum releasable capacity. Through the experiments that emulate practical operations, the SOC estimation method is verified to demonstrate the effectiveness and accuracy. (C) 2008 Elsevier Ltd. All rights reserved.
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