State of Charge Depended Modeling of an Equivalent Circuit of Zinc Air Batteries Using Electrochemical Impedance Spectroscopy

  • Metal air batteries provide a high energy density as the ca-thodic reaction uses the surrounding air. Different metals can be usedbut zinc is very promising due to its disposability and nontoxic behav-ior. State estimation is quite complicated as the voltage characteristicof the battery is rather flat. Especially estimating the state of chargeis important as a secondary electrolysis process during overcharging canlead to an unsafe state. Another technique for state estimation is theelectrochemical impedance spectroscopy. Therefore, this paper describesthe process of setup and measuring a time series of impedance spectraat known states of charge. Then these spectra are used to derive anequivalent circuit. Finally the development of the circuit’s parameter areanalyzed to extract most important parameters.

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Author:Andre Löchte, Ole Gebert, Ludwig Horsthemke, Daniel Heming, Peter Glösekötter
Parent Title (German):International Conference on Time Series and Forecasting: Proceedings of Papers, 19-21 September 2018, Granada (Spain)
Document Type:Conference Proceeding
Date of Publication (online):2019/05/20
Year of first Publication:2018
Provider of the Publication Server:FH Münster - University of Applied Sciences
Release Date:2019/05/20
First Page:625
Last Page:636
Faculties:Elektrotechnik und Informatik (ETI)
Publication list:Glösekötter, Peter
Licence (German):License LogoBibliographische Daten