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Electrochemical & Equivalent Circuit Modelling and Validation of Lithium-Ion Cell in GT-AutoLion
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 05, 2022 by SAE International in United States
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High energy and power density Lithium-ion batteries are used as energy storage devices for indispensable applications ranging from cell phones to hybrid electric vehicles, unmanned aerial vehicles and commercial passenger aircrafts. To monitor the health of the battery and its various performances, it is crucial to understand the electrochemical behavior of the battery. The Doyle-Fuller-Newman (DFN) model is a popular electro-chemistry-based model, which characterizes the solid and electrolyte diffusion dynamics in the battery and predicts current/voltage response. However, the DFN model requires many parameters that need to be estimated to obtain an accurate battery model. In this article, an electro-chemistry based cell model is developed using GT-AutoLion to simulate and validate the performance for two different commercially available Lithium Iron Phosphate (LiFePO4) and Nickel Cobalt Aluminum (NCA) cells. GT-AutoLion is a powerful tool for physics-based modeling to predict variations in material, electrode and cell design that can affect performance and characteristics of cells. Two-step procedure is used to estimate the thermodynamic parameters using low-current discharges and kinetic parameters using high pulse discharge current. A parameter sensitivity analysis is performed to understand the critical parameters like diffusivity, conductivity etc. that can significantly affect the performance of cell. The fidelity of the model is confirmed by the satisfactory fit of the model to the experimental data. The developed electrochemical cell model is used to create an equivalent electrical circuit model using Virtual Hybrid Pulse Power Characterization (HPPC) tests. Various parameters like open circuit voltage, internal resistance, and RC circuit parameters are estimated using HPPC test. The equivalent electrical circuit model also has very good correlation with electrochemical cell model which can be used to integrate in any pack level electrical and thermal models
CitationNatarajan, N., Panday, A., Duddu, S., Singh, T. et al., "Electrochemical & Equivalent Circuit Modelling and Validation of Lithium-Ion Cell in GT-AutoLion," SAE Technical Paper 2022-28-0338, 2022, https://doi.org/10.4271/2022-28-0338.
- Lee , D.U. , Xu , P. , Cano , Z.P. , Kashkooli , A.G. et al. Recent Progress and Perspectives on bi-functional Oxygen Electrocatalysts for Advanced Rechargeable metal-air Batteries Journal of Material Chemistry A 4 19 2016 7107 7134
- Doyle , M. , Fuller , T.F. , and Newman , J. Modeling of Galvanostatic Charge and Discharge of the Lithium/Polymer/Insertion Cell Journal of Electrochemical Society 1526 1993 140
- Fuller , T.F. , Doyle , M. , and Newman , J. Simulation and Optimization of the Dual Lithium Ion Insertion Cell Journal of Electrochemical Society 1 1994 141
- Mauger , A. and Julien , C.M. Olivine Positive Electrodes for Li-Ion Batteries: Status and Perspectives Batteries 4 3 2018 39 10.3390/batteries4030039
- Mastali , M. , Farkhondeh , M. , Farhad , S. , Fraser , R.A. et al. Electrochemical Modeling of Commercial LiFePO 4 and Graphite Electrodes: Kinetic and Transport Properties and Their Temperature Dependence Journal of The Electrochemical Society 163 13 2016 A2803 A2816
- Jin , N. , Danilov , D.L. , Van den Hof , P.M.J. , and Donkers , M.C.F. Parameter Estimation of an Electrochemistry-based Lithium-ion Battery Model using a Two-step Procedure and a Parameter Sensitivity Analysis International Journal of Energy Research 42 2018 2417 2430 10.1002/er.4002