An Accurate SOC Estimation Method for Lithium-ion Batteries which Considers Thermal Variation

An Accurate SOC Estimation Method for Lithium-ion Batteries which Considers Thermal Variation

This paper discusses an SOC estimation system for lithium ion batteries based on the extended Kalman filter. The accuracy of the estimation is strongly dependent on accuracy of the battery model. We have newly formulated the equivalent circuit model that covers temperature and SOC dependencies. As t...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Denki kagaku oyobi kōgyō butsuri kagaku 2015/10/05, Vol.83(10), pp.852-854
Hauptverfasser: ISHIZAKI, Ryu, LIN, Lei, FUKUI, Masahiro
Format: Artikel
Sprache:eng
Schlagworte:
Accuracy
Electric batteries
Electric charge
Equivalent circuits
Errors
Extended Kalman filter
Karman Filter
Lithium-ion batteries
Lithium-ion Battery
Rechargeable batteries
State of Charge
Temperature Dependency
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:This paper discusses an SOC estimation system for lithium ion batteries based on the extended Kalman filter. The accuracy of the estimation is strongly dependent on accuracy of the battery model. We have newly formulated the equivalent circuit model that covers temperature and SOC dependencies. As the result, the error rate of the estimation has been improved significantly. The experimental results show that the new SOC estimation system derives very accurate results for wide range of temperature.
ISSN:1344-3542
2186-2451
DOI:10.5796/electrochemistry.83.852