Multi-physical characterization of supercapacitor
Résumé
This paper presents the supercapacitor parameters variations due to number of cycles (NbCy), the frequency of DC-current and the temperature. The goal of this study consists to show the parameters evolution which can serve to determine the supercapacitor energetic performances limits estimation for different conditions of use. The contribution of the paper is focused on the impacts of charge/discharge DC-current's frequency, the temperature and the number of cycles on supercapacitor resistance and capacitance. The proposed method uses several DC-current profiles based on fluctuations and no fluctuations consideration. To do the supercapacitor stress tests, the experimental tests based on charge and discharge operations with fluctuating DC-current are done. To do estimation of the series resistance and capacitance (characterization) a constant DC-current without any fluctuations consideration is used. The experimental tests results are presented and the impacts of the number of cycles, the frequency of DC-current and the temperature are analyzed.
Mots clés
capacitance
electric resistance
supercapacitors
supercapacitor multiphysical characterization
supercapacitor parameter variations
charge-discharge DC-current frequency impact
supercapacitor resistance
supercapacitor capacitance
supercapacitor stress test
DC-current fluctuation
series resistance estimation
series capacitance estimation
Characterization of supercapacitor
ultracapacitor
dynamic DC-current
number of cycles
frequency impact
temperature impact
series resistance variation
capacitance variation