New Experimental Approach for the Determination of the Heat Generation in a Li-Ion Battery Cell

With regard to safety, efficiency and lifetime of battery systems, the thermal behavior of battery cells is of great interest. The use of models describing the thermoelectric behavior of battery cells improves the understanding of heat generation mechanisms and enables the development of optimized t...

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Autores principales:	Rouven Christen, Björn Martin, Gerhard Rizzo
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	lithium-ion battery cell experimental method reversible heat equivalent circuit model Technology T
Acceso en línea:	https://doaj.org/article/51f069b346da43d0acc4193b484ed49a
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spelling	oai:doaj.org-article:51f069b346da43d0acc4193b484ed49a2021-11-11T15:47:36ZNew Experimental Approach for the Determination of the Heat Generation in a Li-Ion Battery Cell10.3390/en142169721996-1073https://doaj.org/article/51f069b346da43d0acc4193b484ed49a2021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/21/6972https://doaj.org/toc/1996-1073With regard to safety, efficiency and lifetime of battery systems, the thermal behavior of battery cells is of great interest. The use of models describing the thermoelectric behavior of battery cells improves the understanding of heat generation mechanisms and enables the development of optimized thermal management systems. In this work, a novel experimental approach is presented to determine both the irreversible heat due to ohmic losses and the reversible heat due to entropy changes directly via heat flow measurements. No additional information about thermal properties of the battery cell, such as heat capacity or thermal conductivity, are required. Thus, the exothermic and endothermic nature of reversible heat generated in a complete charge/discharge cycle can be investigated. Moreover, the results of the proposed method can potentially be used to provide an additional constraint during the identification process of the equivalent circuit model parameters. The described method is applied to a 23 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="normal">A</mi></semantics></math></inline-formula><inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="normal">h</mi></semantics></math></inline-formula> lithium titanate cell and the corresponding results are presented.Rouven ChristenBjörn MartinGerhard RizzoMDPI AGarticlelithium-ion battery cellexperimental methodreversible heatequivalent circuit modelTechnologyTENEnergies, Vol 14, Iss 6972, p 6972 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	lithium-ion battery cell experimental method reversible heat equivalent circuit model Technology T
spellingShingle	lithium-ion battery cell experimental method reversible heat equivalent circuit model Technology T Rouven Christen Björn Martin Gerhard Rizzo New Experimental Approach for the Determination of the Heat Generation in a Li-Ion Battery Cell
description	With regard to safety, efficiency and lifetime of battery systems, the thermal behavior of battery cells is of great interest. The use of models describing the thermoelectric behavior of battery cells improves the understanding of heat generation mechanisms and enables the development of optimized thermal management systems. In this work, a novel experimental approach is presented to determine both the irreversible heat due to ohmic losses and the reversible heat due to entropy changes directly via heat flow measurements. No additional information about thermal properties of the battery cell, such as heat capacity or thermal conductivity, are required. Thus, the exothermic and endothermic nature of reversible heat generated in a complete charge/discharge cycle can be investigated. Moreover, the results of the proposed method can potentially be used to provide an additional constraint during the identification process of the equivalent circuit model parameters. The described method is applied to a 23 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="normal">A</mi></semantics></math></inline-formula><inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="normal">h</mi></semantics></math></inline-formula> lithium titanate cell and the corresponding results are presented.
format	article
author	Rouven Christen Björn Martin Gerhard Rizzo
author_facet	Rouven Christen Björn Martin Gerhard Rizzo
author_sort	Rouven Christen
title	New Experimental Approach for the Determination of the Heat Generation in a Li-Ion Battery Cell
title_short	New Experimental Approach for the Determination of the Heat Generation in a Li-Ion Battery Cell
title_full	New Experimental Approach for the Determination of the Heat Generation in a Li-Ion Battery Cell
title_fullStr	New Experimental Approach for the Determination of the Heat Generation in a Li-Ion Battery Cell
title_full_unstemmed	New Experimental Approach for the Determination of the Heat Generation in a Li-Ion Battery Cell
title_sort	new experimental approach for the determination of the heat generation in a li-ion battery cell
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/51f069b346da43d0acc4193b484ed49a
work_keys_str_mv	AT rouvenchristen newexperimentalapproachforthedeterminationoftheheatgenerationinaliionbatterycell AT bjornmartin newexperimentalapproachforthedeterminationoftheheatgenerationinaliionbatterycell AT gerhardrizzo newexperimentalapproachforthedeterminationoftheheatgenerationinaliionbatterycell
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New Experimental Approach for the Determination of the Heat Generation in a Li-Ion Battery Cell

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