Hysteresis Modeling of Lithium-Silicon Half Cells Using Krasnosel'skii-Pokrovskii Model

Chayratsami, Pornpimon; Plett, Gregory L.

doi:10.1109/CCTA.2019.8920524

Hysteresis Modeling of Lithium-Silicon Half Cells Using Krasnosel'skii-Pokrovskii Model

Author(s)

Chayratsami, Pornpimon

Plett, Gregory L.

Date Issued

August 1, 2019

Type

Conference Paper

DOI

10.1109/CCTA.2019.8920524

Abstract

Unmodeled battery-cell voltage hysteresis can cause state-of-charge (SOC) estimation error in a battery-management system (BMS) of an EV system. To improve BMS performance, hysteresis voltage must be modeled correctly. This paper presents the use of linear least-squares identification of a Krasnosel'skii-Pokrovskii (KP) model to estimate hysteresis for a Li//Si half cell. We find that the KP model provides good estimates and has lower root-mean-squared estimation error than a classical discrete Preisach model with the same degree of discretization.

Citation

Ccta 2019 3rd IEEE Conference on Control Technology and Applications, 470-475, 2019