Thermal performance of direct two-phase refrigerant cooling for lithium-ion batteries in electric vehicles
- Authors
- Hong, Seong Ho; Jang, Dong Soo; Park, Seonggi; Yun, Sungho; Kim, Yongchan
- Issue Date
- 5-6월-2020
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Battery thermal management; Refrigerant cooling; Liquid cooling; Electric vehicle; R134a; Temperature distribution
- Citation
- APPLIED THERMAL ENGINEERING, v.173
- Indexed
- SCIE
SCOPUS
- Journal Title
- APPLIED THERMAL ENGINEERING
- Volume
- 173
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/55049
- DOI
- 10.1016/j.applthermaleng.2020.115213
- ISSN
- 1359-4311
- Abstract
- The lithium-ion battery has been considered as a power source of electric vehicles (EVs). An efficient battery thermal management system is essential for lithium-ion batteries with high cooling performance and long lifetime. The objective of this study is to investigate the performance improvement of a novel direct two-phase refrigerant cooling over a conventional liquid cooling for traction batteries of EVs. Based on full-scale experiments under actual vehicle conditions, the thermal performance of the two-phase refrigerant cooling is compared with that of the conventional liquid cooling with the same outer size. The two-phase refrigerant cooling satisfies the maximum cell temperature limit of 45 degrees C even under harsh environmental conditions. During aging, the two-phase refrigerant cooling provides 16.1% higher battery capacity and 15.0% lower internal resistance compared with the liquid cooling under harsh environmental conditions. Overall, the two-phase refrigerant cooling is considered a preferred alternative to the conventional liquid cooling owing to its reliable performance even with a simple and lightweight structure.
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Collections - College of Engineering > Department of Mechanical Engineering > 1. Journal Articles
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