A new approach to the internal thermal management of cylindrical battery cells for automotive applications

Worwood, Daniel, Kellner, Quirin, Wojtala, Malgorzata, Widanage, WD, McGlen, Ryan, Greenwood, David and Marco, James (2017) A new approach to the internal thermal management of cylindrical battery cells for automotive applications. Journal of Power Sources, 346. pp. 151-166.

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Official URL: http://dx.doi.org/10.1016/j.jpowsour.2017.02.023

Abstract

Conventional cooling approaches that target either a singular tab or outer surface of common format cylindrical lithium-ion battery cells suffer from a high cell thermal resistance. Under an aggressive duty cycle, this resistance can result in the formation of large in-cell temperature gradients and high hot spot temperatures, which are known to accelerate ageing and further reduce performance. In this paper, a novel approach to internal thermal management of cylindrical battery cells to lower the thermal resistance for heat transport through the inside of the cell is investigated. The effectiveness of the proposed method is analysed for two common cylindrical formats when subject to highly aggressive electrical loading conditions representative of a high performance electric vehicle (EV) and hybrid electric vehicle (HEV). A mathematical model that captures the dominant thermal properties of the cylindrical cell is created and validated using experimental data. Results from the extensive simulation study indicate that the internal cooling strategy can reduce the cell thermal resistance by up to 67.8 ± 1.4% relative to single tab cooling, and can emulate the performance of a more complex pack-level double tab cooling approach whilst targeting cooling at a single tab.

Item Type:	Article
Additional Information:	publisher: Elsevier articletitle: A new approach to the internal thermal management of cylindrical battery cells for automotive applications journaltitle: Journal of Power Sources articlelink: http://dx.doi.org/10.1016/j.jpowsour.2017.02.023 content_type: article copyright: © 2017 The Authors. Published by Elsevier B.V.
Uncontrolled Keywords:	7 Affordable and Clean Energy
Depositing User:	Symplectic Admin
Date Deposited:	21 Feb 2019 11:20
Last Modified:	16 Mar 2024 22:11
DOI:	10.1016/j.jpowsour.2017.02.023
Open Access URL:	https://www.sciencedirect.com/science/article/pii/...
Related URLs:	Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3033206