Modeling and identification of lithium-ion batteries for electric vehicles

Author

Quantmeyer, F. ; Liu-Henke, X.

Author_Institution

Ostfalia Univ. of Appl. Sci., Wolfenbuettel, Germany

fYear

2013

fDate

15-18 May 2013

Firstpage

19

Lastpage

20

Abstract

The present paper describes the modeling of the energy-storage unit - a battery that consists of several lithiumion cells - at various modeling depths. 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 with high frequencies.

Keywords

battery powered vehicles; electrochemical impedance spectroscopy; frequency measurement; secondary cells; EIS; dynamical testing cycle; electric vehicle; electrochemical impedance spectroscopy; energy-storage unit; frequency measurement; iterative character; lithium-ion battery; lithium-ion cell; Accuracy; Batteries; Computational modeling; Equivalent circuits; Frequency measurement; Integrated circuit modeling; Vectors; Battery Model; Identification; Impedance Spectroscopy; Lithium-Ion Battery;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrodynamic and Mechatronic System (SELM), 2013 International Symposium on

Conference_Location

Opole-Zawiercie

Print_ISBN

978-1-4673-5588-9

Type

conf

DOI

10.1109/SELM.2013.6562959

Filename

6562959