Abstract The relationship between voltage and current inside a battery, or the impedance, plays an important role in the simulation and design of hybrid electric vehicle (HEV) power systems. This paper proposes a new approach employing the Bode plot for evaluation of equivalent circuit parameters for a lithium polymer battery (LiPB) for HEV application. The main concept of the proposed circuit-parameter-based model approach is the application of a transfer function used to process the frequency response of the battery for calculation of accurate circuit parameters. Additionally, the Bode plot is also applied to derive the impedance-based model directly from frequency response measurements for short time simulations and practical use in the HEV. Two methods for battery modeling are proposed and verified experimentally with the voltage-current profile of a conventional HEV using the battery measured in this paper. The results show that the proposed circuit-parameter-based technique provides a satisfactory battery equivalent circuit model.
Impedance-based and circuit-parameter-based battery models for HEV power systems
International Journal of Automotive Technology ; 9 , 5 ; 615-623
2008-10-01
9 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Impedance-based and circuit-parameter-based battery models for HEV power systems
Online Contents | 2008
|Impedance-based and circuit-parameter-based battery models for HEV power systems
British Library Online Contents | 2008
|