Modeling the Electrical Behavior of Lithium-Ion Batteries for Electric Vehicles

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Abstract:

The present paper describes the modeling of the energy-storage unit - a battery that consists of several lithium-ion cells. Identification by means of frequency measurements at different operating points and subsequent verification in the time domain serve to identify both the modeling structure and the system parameters. For the frequency measurement the Electrochemical Impedance Spectroscopy (EIS) is used. The iterative character of the selected procedure is exemplified. On the basis of dynamical testing cycles, the accuracy of the battery model is verified even in case of high frequencies.

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Periodical:

Solid State Phenomena (Volume 214)

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40-47

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February 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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