Optimal cell tab design and cooling strategy for cylindrical lithium-ion batteries

Shen Li; Niall Kirkaldy; Cheng Zhang; Krishnakumar Gopalakrishnan; Tazdin Amietszajew; Laura Bravo Diaz; Jorge Varela Barreras; Mosayeb Shams; Xiao Hua; Yatish Patel; Gregory J. Offer; Monica Marinescu

doi:10.1016/j.jpowsour.2021.229594

Optimal cell tab design and cooling strategy for cylindrical lithium-ion batteries

Shen Li, Niall Kirkaldy, Cheng Zhang, Krishnakumar Gopalakrishnan, Tazdin Amietszajew, Laura Bravo Diaz, Jorge Varela Barreras, Mosayeb Shams, Xiao Hua, Yatish Patel, Gregory J. Offer, Monica Marinescu

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Abstract

The ability to correctly predict the behavior of lithium ion batteries is critical for safety, performance, cost and lifetime. Particularly important for this purpose is the prediction of the internal temperature of cells, because of the positive feedback between heat generation and current distribution. In this work, a comprehensive electro-thermal model is developed for a cylindrical lithium-ion cell. The model is comprehensively parameterized and validated with experimental data for 2170 cylindrical cells (LG M50T, NMC811), including direct core temperature measurements. The validated model is used to study different cell designs and cooling approaches and their effects on the internal temperature of the cell. Increasing the number of tabs connecting the jellyroll to the base of the cylindrical-can reduces the internal thermal gradient by up to 25.41%. On its own, side cooling is more effective than base cooling at removing heat, yet both result in thermal gradients within the cell of a similar magnitude, irrespective of the number of cell tabs. The results are of immediate interest to both cell manufacturers and battery pack designers, while the modelling and parameterization framework created is an essential tool for energy storage system design.

Original language	English
Article number	229594
Number of pages	16
Journal	Journal of Power Sources
Volume	492
Early online date	18 Feb 2021
DOIs	https://doi.org/10.1016/j.jpowsour.2021.229594
Publication status	Published - 30 Apr 2021

Bibliographical note

NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Power Sources. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Power Sources, 492, (2021) DOI: 10.1016/j.jpowsour.2021.229594

© 2021, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

Funder

Funding Information:
This work was supported by the Faraday Institution (grant no. EP/S003053/1 , FIRG003 ), the Innovate UK BATMAN project (grant no. 104180 ), the Innovate UK WIZer project (grant no. 104427 ), and the UK EPSRC TRENDs project (grant no. EP/R020973/1 ).

Funding

This work was supported by the Faraday Institution (grant no. EP/S003053/1 , FIRG003 ), the Innovate UK BATMAN project (grant no. 104180 ), the Innovate UK WIZer project (grant no. 104427 ), and the UK EPSRC TRENDs project (grant no. EP/R020973/1 ).

Funders	Funder number
Innovate UK	104180, 104427
The Faraday Institution	EP/S003053/1, FIRG003
Engineering and Physical Sciences Research Council	EP/R020973/1

Keywords

Cell design
Electro-thermal model
Lithium-ion battery
Thermal management

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.jpowsour.2021.229594

Post-PrintAccepted author manuscript, 1.46 MBLicence: CC BY-NC-ND

Cite this

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abstract = "The ability to correctly predict the behavior of lithium ion batteries is critical for safety, performance, cost and lifetime. Particularly important for this purpose is the prediction of the internal temperature of cells, because of the positive feedback between heat generation and current distribution. In this work, a comprehensive electro-thermal model is developed for a cylindrical lithium-ion cell. The model is comprehensively parameterized and validated with experimental data for 2170 cylindrical cells (LG M50T, NMC811), including direct core temperature measurements. The validated model is used to study different cell designs and cooling approaches and their effects on the internal temperature of the cell. Increasing the number of tabs connecting the jellyroll to the base of the cylindrical-can reduces the internal thermal gradient by up to 25.41%. On its own, side cooling is more effective than base cooling at removing heat, yet both result in thermal gradients within the cell of a similar magnitude, irrespective of the number of cell tabs. The results are of immediate interest to both cell manufacturers and battery pack designers, while the modelling and parameterization framework created is an essential tool for energy storage system design.",

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AU - Diaz, Laura Bravo

AU - Barreras, Jorge Varela

AU - Shams, Mosayeb

AU - Hua, Xiao

AU - Patel, Yatish

AU - Offer, Gregory J.

AU - Marinescu, Monica

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N2 - The ability to correctly predict the behavior of lithium ion batteries is critical for safety, performance, cost and lifetime. Particularly important for this purpose is the prediction of the internal temperature of cells, because of the positive feedback between heat generation and current distribution. In this work, a comprehensive electro-thermal model is developed for a cylindrical lithium-ion cell. The model is comprehensively parameterized and validated with experimental data for 2170 cylindrical cells (LG M50T, NMC811), including direct core temperature measurements. The validated model is used to study different cell designs and cooling approaches and their effects on the internal temperature of the cell. Increasing the number of tabs connecting the jellyroll to the base of the cylindrical-can reduces the internal thermal gradient by up to 25.41%. On its own, side cooling is more effective than base cooling at removing heat, yet both result in thermal gradients within the cell of a similar magnitude, irrespective of the number of cell tabs. The results are of immediate interest to both cell manufacturers and battery pack designers, while the modelling and parameterization framework created is an essential tool for energy storage system design.

AB - The ability to correctly predict the behavior of lithium ion batteries is critical for safety, performance, cost and lifetime. Particularly important for this purpose is the prediction of the internal temperature of cells, because of the positive feedback between heat generation and current distribution. In this work, a comprehensive electro-thermal model is developed for a cylindrical lithium-ion cell. The model is comprehensively parameterized and validated with experimental data for 2170 cylindrical cells (LG M50T, NMC811), including direct core temperature measurements. The validated model is used to study different cell designs and cooling approaches and their effects on the internal temperature of the cell. Increasing the number of tabs connecting the jellyroll to the base of the cylindrical-can reduces the internal thermal gradient by up to 25.41%. On its own, side cooling is more effective than base cooling at removing heat, yet both result in thermal gradients within the cell of a similar magnitude, irrespective of the number of cell tabs. The results are of immediate interest to both cell manufacturers and battery pack designers, while the modelling and parameterization framework created is an essential tool for energy storage system design.

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Optimal cell tab design and cooling strategy for cylindrical lithium-ion batteries

Abstract

Bibliographical note

Funder

Funding

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

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