Modeling of Lithium Battery Cells for Plug-In Hybrid Vehicles

Online simulations are utilized to reduce time and cost in the development and performance optimization of plug-in hybrid electric vehicle (PHEV) and electric vehicles (EV) systems. One of the most important factors in an online simulation is the accuracy of the model. In particular, a model of a battery should accurately reflect the properties of an actual battery. However, precise dynamic modeling of high-capacity battery systems, which significantly affects the performance of a PHEV, is difficult because of its nonlinear electrochemical characteristics. In this study, a dynamic model of a high-capacity battery cell for a PHEV is developed through the extraction of the equivalent impedance parameters using electrochemical impedance spectroscopy (EIS). Based on the extracted parameters, a battery cell model is implemented using MATLAB/Simulink, and charging/discharging profiles are executed for comparative verification. Based on the obtained results, the model is optimized for a high-capacity battery cell for a PHEV. The simulation results show good agreement with the experimental results, thereby validating the developed model and verifying its accuracy.

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Cite this article

[IEEE Style]

D. Shin, J. Jeong, T. Kim, H. Kim, "Modeling of Lithium Battery Cells for Plug-In Hybrid Vehicles," Journal of Power Electronics, vol. 13, no. 3, pp. 429-436, 2013. DOI: 10.6113/JPE.2013.13.3.429.

[ACM Style]

Dong-Hyun Shin, Jin-Beom Jeong, Tae-Hoon Kim, and Hee-Jun Kim. 2013. Modeling of Lithium Battery Cells for Plug-In Hybrid Vehicles. Journal of Power Electronics, 13, 3, (2013), 429-436. DOI: 10.6113/JPE.2013.13.3.429.