Nominal energy optimisation method of constrained battery packs through the iteration of the series-parallel topology

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dc.citation.journalTitleInternational Journal of Energy Researchspa
dc.contributor.authorFernández-Montoya, M.
dc.contributor.authorArias-Rosales, A.
dc.contributor.authorOsorio-Gómez, G.
dc.contributor.authorMejía-Gutiérrez, R.
dc.contributor.departmentUniversidad EAFIT. Departamento de Ingeniería de Diseño
dc.contributor.researchgroupIngeniería de Diseño (GRID)spa
dc.date.accessioned2021-04-12T21:14:11Z
dc.date.available2021-04-12T21:14:11Z
dc.date.issued2017-10-10
dc.description.abstractThe design of a battery pack commonly deals with high performance goals and challenging constraints in terms of cost, volume or weight. One of the most crucial variables to maximise is the nominal energy, which depends on the number of discrete battery cells that can be allocated and their individual technical specifications. This work proposes a systematic method to optimise the nominal energy of a constrained battery pack from the perspective of the series-parallel topology. A mathematical and graphical characterisation is presented on how the main battery's variables are related to a topology bounded to discretisation procedures. It was theoretically found that the effects of rounding the values of the topology may lead to a considerable loss of potential nominal energy, a risk that increases linearly with the number of series. The behaviour of the battery is assessed under nominal conditions and under the event of a cell failure. The theoretical analysis suggests that the detrimental effects due to an open-circuit increase as the number of series increases, while it is the opposite in the case of a shorted cell. The method is satisfactorily implemented in the development of two different battery packs for solar competition cars with limiting regulations. The candidate topologies outperformed the nominal energy of topologies defined without the method in up to 5%. It was also found that selecting an energy-maximising topology is not always the most convenient choice, because other variables may be of interest and are dependent on the topology as well. The method is of great use to guide the topology definition process in early theoretical stages, which is usually a compromise between allocating as much cells as possible within constraints, and approaching other performance goals such as a given nominal voltage or capacity. Copyright (c) 2017 John Wiley & Sons, Ltd.eng
dc.identifierhttps://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=6527
dc.identifier.doi10.1002/er.3734
dc.identifier.issn0363907X
dc.identifier.issn1099114X
dc.identifier.otherWOS;000411332400003
dc.identifier.otherSCOPUS;2-s2.0-85014737462
dc.identifier.urihttp://hdl.handle.net/10784/28928
dc.language.isoengeng
dc.publisherJohn Wiley and Sons Ltd
dc.relationDOI;10.1002/er.3734
dc.relationWOS;000411332400003
dc.relationSCOPUS;2-s2.0-85014737462
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85014737462&doi=10.1002%2fer.3734&partnerID=40&md5=a3f220c1f4a2c52a9bf05b6918d2c914
dc.rightshttps://v2.sherpa.ac.uk/id/publication/issn/0363-907X
dc.sourceInternational Journal of Energy Research
dc.subject.keywordbatteryeng
dc.subject.keywordseries-parallel topologyeng
dc.subject.keywordoptimisationeng
dc.subject.keywordsolar careng
dc.subject.keywordcell failureeng
dc.titleNominal energy optimisation method of constrained battery packs through the iteration of the series-parallel topologyeng
dc.typeinfo:eu-repo/semantics/articleeng
dc.typearticleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.typepublishedVersioneng
dc.type.localArtículospa

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