리튬이온 배터리 방전 시 발열 특성 및 냉각 실험과 유한요소 해석

• 영문명: Thermal Characteristics and Cooling Experiments and Analysis of Finite Elements in the Discharge of Lithium-Ion Batteries
• 발행기관: 강원대학교 산업기술연구소
• 저자명: 김석일(Seokil Kim) 강신유(Shin You Kang)
• 간행물 정보: 『산업기술연구』vol.43, 15~23쪽, 전체 9쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 2023.12.31

영문 초록

Lithium-ion batteries are predominantly employed in electric vehicles and energy storage devices, offering the advantage of high energy density. However, they are susceptible to efficiency degradation when operated at high temperatures due to their sensitivity to the external environment. In this study, we conducted experiments using an indirect cooling method to prevent thermal runaway and explosions in lithium-ion batteries. The results were validated by comparing them with heat transfer simulations conducted through a commercial finite element analysis program. The experiments included single-cell exothermic tests and cooling experiments on a battery pack with 10 cells connected in series, utilizing 21700 lithium-ion batteries. To block external temperature influences, the experimental environment featured an extrusion method insulation in the environmental chamber. The cooling system, suitable for indirect cooling, was constructed with copper tubes and pins. The heat transfer analysis began by presenting a single-cell heating model using commercial software, which was then employed to analyze the heating and cooling of the battery pack.

목차

1. 서 론

2. 연구목적

3. 리튬이온 배터리 방전 실험

4. 유한요소 해석

5. 결과

References

키워드

Li-ion Battery Heat Transfer Cooling Finite Element Analysis