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ISSN Online: 2377-424X

ISBN Print: 978-1-56700-474-8

ISBN Online: 978-1-56700-473-1

International Heat Transfer Conference 16
August, 10-15, 2018, Beijing, China

THE EFFECT OF THERMAL AND PHYSICAL PARAMETERS OF A LITHIUM ION BATTERY ELECTRODE ON THE INTERNAL CELL RESISTANCE

Get access (open in a dialog) DOI: 10.1615/IHTC16.ctm.023907
pages 4043-4056

Résumé

The overall performance of Li-ion battery as a single cell or in a pack is greatly determined by the internal ionic and electronic resistance during battery cycling. Similarly these internal resistances affected by the internal microstructure of the electrodes and the temperature profile of the battery. The aim of this work is to estimate numerically the total impedance arises in the Li-ion battery graphite electrode at a different temperatures. The complex anisotropic microstructure of negative electrode (graphite) was reconstructed using simulated annealing method (SAM) and numerical investigation of the underlying species and charge transport was carrying out using equivalent circuit method.
The results of the total impedance and the transfer function of ionic and electronic diffusions are presented in Nyquist and Bode plots respectively. Finally, numerical results thus obtained were validated against the experimental data from literature and they were in a good agreement with a relative error of about 5%.