Communication - Prediction of thermal issues for larger format 4680 cylindrical cells and their mitigation with enhanced current collection

Author: 

Tranter, T
Timms, R
Shearing, P
Brett, D

Publication Date: 

29 December 2020

Journal: 

Journal of The Electrochemical Society

Last Updated: 

2021-10-11T08:48:01.47+01:00

Issue: 

16

Volume: 

167

DOI: 

10.1149/1945-7111/abd44f

page: 

160544-160544

abstract: 

The paper numerically explores the electrochemical and thermal behaviour of a larger format 4680 cylindrical cell recently proposed by Tesla and explains the need to go "tabless." An idealized spiral geometry is used for 2D simulations with the traditional tab-based current collection method and a new continuous current collection method compared. The new design is found to mitigate the ohmic losses experienced around the "jelly-roll" current collectors which are significant for the traditional tabbed case, thus leading to higher efficiency and capacity and reduced heat production.

Symplectic id: 

1151503

Submitted to ORA: 

Submitted

Publication Type: 

Journal Article