Journal
JOURNAL OF POWER SOURCES
Volume 174, Issue 1, Pages 2-8Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2007.03.019
Keywords
battery; cyclic voltammetry; chronopotentiometry; equivalent circuit; lithium titanate
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We derive and implement analytic solutions for the description of batteries subject to cyclic voltage and current sources of varying amplitudes, consistent with vehicle drive events. An equivalent circuit comprising a resistor in series with a parallel resistor-capacitor combination is employed. The method we develop is applied to a high-power lithium ion cell, thereby allowing us to obtain parameters and overall characteristics useful for (1) representing the battery in system (e.g., vehicle) models and (2) providing a quantitative means of comparing and classifying battery systems. Closed-form analytic solutions derived using Fourier series are compared with experimental data. (c) 2007 Elsevier B.V. All rights reserved.
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