Li, Chaoen;
Wang, Yuhang;
Sun, Zhiwei;
Wen, Xiaodong;
Wu, Jiayu;
Feng, Lei;
Wang, Yuxiang;
... Liu, Dongjing; + view all
(2024)
Two-phase immersion liquid cooling system for 4680 Li-ion battery thermal management.
Journal of Energy Storage
, 97
, Article 112952. 10.1016/j.est.2024.112952.
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Abstract
The demand for large format lithium-ion batteries (LIBs) is rising as they are easier to integrate and control at a system level. While, with increasing size, there is an augmented risk of overheating due to increased heat generation. For 18650 and 21,700 batteries, they can be efficiently cooled either from the base or from the side. Given the widespread adoption of large format 4680-cylindrical cells, it is imperative to possess a comprehensive understanding of their thermal management strategies. The present study proposes a liquid immersion system to investigate the cooling performance of a group 4680 LIBs and assess the impact of thermal management performance on battery pack. A comparison is made among different cooling strategies, including natural convection, forced convection, and SF33 coolant liquid cooling, under various discharge rates. The results indicate that the utilization of two-phase immersion cooling system proved highly efficient in maintaining the cell temperature within the range of 34–35 °C across all tested conditions, exhibiting excellent temperature uniformity. Finally, the influential factors affecting the pool cooling heat transfer were discussed, including the battery surface structure, intracavitary pressure, coolant properties and so on. This study provides fundamental research for direct liquid-cooling technology, which exhibits significant potential in augmenting the durability and safety aspects of LIBs.
| Type: | Article |
|---|---|
| Title: | Two-phase immersion liquid cooling system for 4680 Li-ion battery thermal management |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.est.2024.112952 |
| Publisher version: | https://doi.org/10.1016/j.est.2024.112952 |
| 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: | Large format lithium-ion battery, Two-phase immersion cooling, Thermal management, Pool boiling, 4680 lithium-ion battery |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment > Bartlett School Env, Energy and Resources |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10219080 |
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