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Modelling and experimental validation of the electrochemical behaviour of a li-ion battery during repetitive pulses of charge and discharge
KTH, Superseded Departments, Chemical Engineering and Technology.ORCID iD: 0000-0002-0861-7342
KTH, Superseded Departments, Chemical Engineering and Technology.ORCID iD: 0000-0001-9203-9313
2004 (English)Conference paper, Published paper (Refereed)
Abstract [en]

In this study, a mathematical model describing the electrochemical and thermal behaviour of a cylindrical lithium-ion battery during high rate discharge and charge using a pulse typical for hybrid electric vehicles (HEV) is validated against experimental data. Experiments on the battery were performed in various constant temperature environments during a repeated pulse using high rate charge and discharge. The results show that the voltage losses increase as the temperature is lowered. The measurements show that as a good approximation, the surface temperature during the pulses can be assumed constant. The open circuit potential of LiNi0.8Co0.15Al0.05 was measured using GITT-experiments. The temperature dependence of the open circuit potential of LiNi0.8Co0.15Al0.05 was shown to be negligible. The experimental data will be used to validate the battery model. Some of the model parameters have yet to be fitted to the experimental results before a good agreement between experimental and model results is obtained.

Place, publisher, year, edition, pages
2004. 150-160 p.
Series
Proceedings - Electrochemical Society, PV 2003-24
Keyword [en]
Electric discharges, Electric vehicles, Electrochemistry, Mathematical models, Hybrid electric vehicles (HEV), Li-ion battery, Open circuit potential, Repetitive pulses, Lithium batteries
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-157274Scopus ID: 2-s2.0-33645283345OAI: oai:DiVA.org:kth-157274DiVA: diva2:771267
Conference
204th Electrochemical Society Fall Meeting, 12 October 2003 through 16 October 2003, Orlando, FL, United States
Note

QC 20141212

Available from: 2014-12-12 Created: 2014-12-08 Last updated: 2014-12-12Bibliographically approved

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Elger, RagnaLindbergh, Göran

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CiteExportLink to record
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