Hua, X;
Heckel, C;
Modrow, N;
Zhang, C;
Hales, A;
Holloway, J;
Jnawali, A;
... Offer, G; + view all
(2021)
The prismatic surface cell cooling coefficient: A novel cell design optimisation tool & thermal parameterization method for a 3D discretised electro-thermal equivalent-circuit model.
eTransportation
, 7
, Article 100099. 10.1016/j.etran.2020.100099.
Preview |
Text
Shearing_Manuscript_Accepted_12_15_2020.pdf - Accepted Version Download (2MB) | Preview |
Abstract
Thermal management of large format prismatic lithium ion batteries is challenging due to significant heat generation rates, long thermal ‘distances’ from the core to the surfaces and subsequent thermal gradients across the cell. The cell cooling coefficient (CCC) has been previously introduced to quantify how easy or hard it is to thermally manage a cell. Here we introduce its application to prismatic cells with a 90 Ah prismatic lithium iron phosphate cell with aluminium alloy casing. Further, a parameterised and discretised three-dimensional electro-thermal equivalent circuit model is developed in a commercially available software environment. The model is thermally and electrically validated experimentally against data including drive cycle noisy load and constant current CCC square wave load, with particular attention paid to the thermal boundary conditions. A quantitative study of the trade-off between cell energy density and surface CCC, and into casing material selection has been conducted here. The CCC enables comparison between cells, and the model enables a cell manufacturer to optimise the cell design and a systems developer to optimise the pack design. We recommend this is operated together holistically. This paper offers a cost-effective, time-efficient, convenient and quantitative way to achieve better and safer battery designs for multiple applications.
| Type: | Article |
|---|---|
| Title: | The prismatic surface cell cooling coefficient: A novel cell design optimisation tool & thermal parameterization method for a 3D discretised electro-thermal equivalent-circuit model |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.etran.2020.100099 |
| Publisher version: | https://doi.org/10.1016/j.etran.2020.100099 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Lithium-ion battery, Electric vehicle, Prismatic surface cell cooling coefficient, 3D discretised electro-thermal equivalent-circuit model, Cell design, Lithium iron phosphate |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10119861 |
Archive Staff Only
 |
View Item |
