This content is not included in your SAE MOBILUS subscription, or you are not logged in.
A Lithium-Ion Battery Optimized Equivalent Circuit Model based on Electrochemical Impedance Spectroscopy
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 14, 2015 by SAE International in United States
Annotation ability available
An electrochemical impedance spectroscopy battery model based on the porous electrode theory is used in the paper, which can comprehensively depict the internal state of the battery. The effect of battery key parameters (the radius of particle, electrochemical reaction rate constant, solid/electrolyte diffusion coefficient, conductivity) to the simulated impedance spectroscopy are discussed. Based on the EIS analysis, a lithium-ion battery optimized equivalent circuit model is built. The parameters in the equivalent circuit model have more clear physical meaning. The reliability of the optimized equivalent circuit model is verified by compared the model and experiments. The relationship between the external condition and internal resistance could be studied according to the optimized equivalent circuit model. Thus the internal process of the power battery is better understood. Where the warburg impedance is used in the model, alternatives instead of warburg impedance to better response the time domain characteristics of the battery is the next exploration to enhance and improve the BMS performance on vehicle.
CitationZhu, J., Sun, Z., Wei, X., and Dai, H., "A Lithium-Ion Battery Optimized Equivalent Circuit Model based on Electrochemical Impedance Spectroscopy," SAE Technical Paper 2015-01-1191, 2015, https://doi.org/10.4271/2015-01-1191.
- Takahashi M, Tobishima S, Takei K, et al.“Characterization of LiFePO4 as the cathode material for rechargeable lithium batteries[J]”. Journal of Power Sources, 2001,97-98,508-511.
- Karden E, Ploumen S, Fricke B, Miller T, et al. “Energy storage devices for future hybrid electric vehicles[J]”.Journal of Power Sources,2007,168,2-11.
- Mauracher P., Karden E.. “Dynamic modelling of lead/acid batteries using impedance spectroscopy for parameter identification[J]”. Journal of Power Sources, 1997,67,69-84.
- Buller S., Karden E., Kok D., et al. Doncker De. “Modeling the dynamic behavior of supercapacitors using impedance spectroscopy[J]”. IEEE Transactions on Industry Applications, 2002,38,1622-1626.
- Xu J., Mi C. Chris, Cao B., et al. “A new method to estimate the state of charge of lithium-ion batteries based on the battery impedance model[J]”. Journal of Power Sources,2013,233,227-284.
- Karden E., Buller S., R.W. et al. “A method for measurement and interpretation of impedance spectra for industrial batteries[J]”. Journal of Power Sources,2000,85, 72-78.
- Dagci, O. and Chandrasekaran, R., “Li-Ion Battery Pack Characterization and Equivalent Electrical Circuit Model Development,” SAE Technical Paper 2014-01-1839, 2014, doi:10.4271/2014-01-1839.
- Gomez J, Nelson R, Kalu E E, et al. “Equivalent circuit model parameters of a high-power Li-ion battery: Thermal and state of charge effects[J]”. Journal of Power Sources,2011, 196(10): 4826-4831.
- Zhu J G, Sun Z C, Wei X Z, et al. “A new electrochemical impedance spectroscopy model of a high-power lithium-ion battery[J]”. RSC Advances, 2014, 4(57): 29988-29998.
- Srinivasan V, Newman J. “Discharge model for the lithiumiron-phosphate electrode[J]”. J Electrochem Soc,2004,151(10),A1517-1529.
- Jin J., Li H.H., Wei J.P., et al. Li/LiFePO4 batteries with room temperature ionic liquid as electrolyte[J].Electrochemistry Communications,2009,11, 1500-1503.