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Communication Dans Un Congrès Année : 2010

Impedance Measurements combined with the Fuzzy Logic methodology to assess the SOC and SOH of Lithium-ion Cells

Ali Zenati
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Philippe Desprez
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Hubert Razik

Résumé

This paper describes experimental results aiming at analyzing lithium-ion batteries performances with aging, for different state of charge and temperatures. The results are provided from electrochemical impedance spectroscopy (EIS) measurements on new and aged cells. A climatic test chamber is used during experiments to simulate the conditions of the temperature. Experimental data are plotted over a broad spectrum of frequencies on Nyquist diagrams. We will also inspect the impact of the presence of a DC current during the EIS measurement. Finally, obtained results will be processed in a way to be used in a fuzzy logic system (FLS), to assess either the state of charge (SOC) or the state of health (SOH) of cells.
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Dates et versions

hal-00539051 , version 1 (25-03-2011)

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Ali Zenati, Philippe Desprez, Hubert Razik, Stéphane Rael. Impedance Measurements combined with the Fuzzy Logic methodology to assess the SOC and SOH of Lithium-ion Cells. VPPC, Sep 2010, Lille, France. pp.DI-1-14 (Actes électroniques), ⟨10.1109/VPPC.2010.5729069⟩. ⟨hal-00539051⟩
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