Thermal modelling and temperature estimation of a cylindrical lithium iron phosphate cell subjected to an automotive duty cycle

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dc.contributor.authorAchanta, Simha Sreekar
dc.contributor.authorFotouhi, Abbas
dc.contributor.authorZhang, Hanwen
dc.contributor.authorAuger, Daniel J.
dc.date.accessioned2025-04-25T13:09:35Z
dc.date.available2025-04-25T13:09:35Z
dc.date.freetoread2025-04-25
dc.date.issued2025-03-22
dc.date.pubOnline2025-03-22
dc.descriptionThis article belongs to the Topic Thermal-Related Design, Application, and Optimization of Fuel Cells and Batteries
dc.description.abstractLi ion batteries are emerging as the mainstream source for propulsion in the automotive industry. Subjecting a battery to extreme conditions of charging and discharging can negatively impact its performance and reduce its cycle life. Assessing a battery’s electrical and thermal behaviour is critical in the later stages of developing battery management systems (BMSs). The present study aims at the thermal modelling of a 3.3 Ah cylindrical 26650 lithium iron phosphate cell using ANSYS 2024 R1 software. The modelling phase involves iterating two geometries of the cell design to evaluate the cell’s surface temperature. The multi-scale multi-domain solution method, coupled with the equivalent circuit model (ECM) solver, is used to determine the temperature characteristics of the cell. Area-weighted average values of the temperature are obtained using a homogeneous and isotropic assembly. A differential equation is implemented to estimate the temperature due to the electrochemical reactions and potential differences. During the discharge tests, the cell is subjected to a load current emulating the Worldwide Harmonised Light Vehicles Test Procedure (WLTP). The results from the finite element model indicate strikingly similar trends in temperature variations to the ones obtained from the experimental tests.
dc.description.journalNameBatteries
dc.description.sponsorshipThis work was co-funded by the UKRI Faraday Battery Challenge project (10048333) called Next Generation LFP Cathode Material (NEXLFP) and the UKRI-APC project (10078104) called High-performance LFP Cathode Active Material (HiCAM). In addition, Abbas Fotouhi acknowledges funding from the Faraday Institution (Industrial Fellowships FIIF-003 and FIIF-014).
dc.identifier.citationAchanta SS, Fotouhi A, Zhang H, Auger DJ. (2025) Thermal modelling and temperature estimation of a cylindrical lithium iron phosphate cell subjected to an automotive duty cycle. Batteries, Volume 11, Issue 4, March 2025, Article number 119
dc.identifier.eissn2313-0105
dc.identifier.elementsID567420
dc.identifier.issn2313-0105
dc.identifier.issueNo4
dc.identifier.paperNo119
dc.identifier.urihttps://doi.org/10.3390/batteries11040119
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/23811
dc.identifier.volumeNo11
dc.languageEnglish
dc.language.isoen
dc.publisherMDPI
dc.publisher.urihttps://www.mdpi.com/2313-0105/11/4/119
dc.relation.isreferencedbyhttps://doi.org/10.17862/cranfield.rd.24953571
dc.rightsAttribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subject40 Engineering
dc.subject4016 Materials Engineering
dc.subject4008 Electrical engineering
dc.subject4014 Manufacturing engineering
dc.subjectlithium iron phosphate cell (LFP)
dc.subjecttemperature estimation
dc.subjectANSYS
dc.subjectmulti-scale multi-domain (MSMD)
dc.subjectequivalent circuit model
dc.subjectidentification
dc.subjectautomotive drive cycle
dc.titleThermal modelling and temperature estimation of a cylindrical lithium iron phosphate cell subjected to an automotive duty cycle
dc.typeArticle
dcterms.dateAccepted2025-03-18

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