Calibration of EIS analyzers using reference impedances

Konferenz: Sensoren und Messsysteme 2014 - Beiträge der 17. ITG/GMA-Fachtagung
03.06.2014 - 04.06.2014 in Nürnberg, Deutschland

Tagungsband: ITG-Fb. 250: Sensoren und Messsysteme 2014

Seiten: 4Sprache: EnglischTyp: PDF

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Autoren:
Funck, Torsten; Eberhardt, Ralf; Heine, Jessica; Bastkowski, Frank; Spitzer, Petra (PhysikalischTechnische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany)

Inhalt:
The electrochemical impedance spectroscopy (EIS) is used to estimate the state of charge and the state of health of batteries made from lithiumion cells. A calibration traceable to SI units of such instruments is up to now possible only to a very limited extend. However, such calibration is essential in order to ensure comparable measurement results for a reliable battery diagnosis. To meet this demand, a prototype of a reference impedance was realized using electronic components. Also a calibration procedure has been developed, that can be carried out using only the standard equipment of a calibration laboratory for AC quantities.