DocumentCode :
2727093
Title :
Impedance measurements combined with the fuzzy logic methodology to assess the SOC and SOH of lithium-ion cells
Author :
Zenati, A. ; Desprez, Ph ; Razik, H. ; Rael, S.
Author_Institution :
SAFT, Bordeaux, France
fYear :
2010
fDate :
1-3 Sept. 2010
Firstpage :
1
Lastpage :
6
Abstract :
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.
Keywords :
Nyquist diagrams; ageing; electric impedance measurement; electrochemical impedance spectroscopy; fuzzy logic; fuzzy systems; lithium; power engineering computing; secondary cells; Nyquist diagram; SOC; SOH; climatic test chamber; electrochemical impedance spectroscopy; fuzzy logic system; impedance measurement; lithium ion battery; lithium ion cell; state of charge; state of health; Aging; Batteries; Battery charge measurement; Current measurement; Fuzzy logic; System-on-a-chip; Temperature measurement; Aging; EIS; Fuzzy Logic System; Lithium-ion batteries; State Of Charge; State Of Health;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicle Power and Propulsion Conference (VPPC), 2010 IEEE
Conference_Location :
Lille
Print_ISBN :
978-1-4244-8220-7
Type :
conf
DOI :
10.1109/VPPC.2010.5729069
Filename :
5729069
Link To Document :
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