Journal
JOURNAL OF POWER SOURCES
Volume 110, Issue 2, Pages 437-444Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0378-7753(02)00209-4
Keywords
lithium-ion; battery modeling; cell testing; lumped-parameter model; PNGV battery; hybrid electric vehicle
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A computer design modeling technique has been developed for lithium-ion batteries to assist in setting goals for cell components, assessing materials requirements, and evaluating thermal management strategies. In this study, the input data for the model included design criteria from Quallion, LLC for Gen-2 18650 cells, which were used to test the accuracy of the dimensional modeling. Performance measurements on these cells were done at the electrochemical analysis and diagnostics laboratory (EADL) at Argonne National Laboratory. The impedance and capacity related criteria were calculated from the EADL measurements. Five batteries were designed for which the number of windings around the cell core was increased for each succeeding battery to study the effect of this variable upon the dimensions, weight, and performance of the batteries. The lumped-parameter battery model values were calculated for these batteries from the laboratory results, with adjustments for the current collection resistance calculated for the individual batteries. (C) 2002 Published by Elsevier Science B.V.
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