Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Study of Cooling Characteristics of 18650 Li-ion Cell Module with Different Types of Phase Change Materials (PCMs)

PCM 종류에 따른 18650 리튬-이온 셀 모듈의 냉각 특성 연구

  • YU, SIWON (Department of Mechanical and Automotive Engineering, Seoul National University of Science and Technology) ;
  • KIM, HAN-SANG (Department of Mechanical and Automotive Engineering, Seoul National University of Science and Technology)
  • 유시원 (서울과학기술대학교 기계.자동차공학과) ;
  • 김한상 (서울과학기술대학교 기계.자동차공학과)
  • Received : 2020.10.11
  • Accepted : 2020.12.30
  • Published : 2020.12.30
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Abstract

The performance and cost of electric vehicles (EVs) are much influenced by the performance and service life of the Li-ion battery system. In particular, the cell performance and reliability of Li-ion battery packs are highly dependent on their operating temperature. Therefore, a novel battery thermal management is crucial for Li-ion batteries owing to heat dissipation effects on their performance. Among various types of battery thermal management systems (BTMS'), the phase change material (PCM) based BTMS is considered to be a promising cooling system in terms of guaranteeing the performance and reliability of Li-ion batteries. This work is mainly concerned with the basic research on PCM based BTMS. In this paper, a basic experimental study on PCM based battery cooling system was performed. The main purpose of the present study is to present a comparison of two PCM-based cooling systems (n-Eicosane and n-Docosane) of the unit 18650 battery module. To this end, the simplified PCM-based Li-ion battery module with two 18650 batteries was designed and fabricated. The thermal behavior (such as temperature rise of the battery pack) with various discharge rates (c-rate) was mainly investigated and compared for two types of battery systems employing PCM-based cooling. It is considered that the results obtained from this study provide good fundamental data on screening the appropriate PCMs for future research on PCM based BTMS for EV applications.

Keywords

References

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