전기자동차용 배터리 Pack의 냉각기술 개발 (II)

김준범; Junbom Kim

Journal of the Korean Industrial and Engineering Chemistry, Vol.14, No.1, 117-121, February, 2003

Export Citation

전기자동차용 배터리 Pack의 냉각기술 개발 (II)

Cooling Efficiency Improvement of Battery Pack for Electric Vehicle (II)

김준범 ^†

울산대학교 화학공학과, 울산 680-749

Junbom Kim^†

Department of Chemical Engineering, Research Center for Machine Parts and Materials Processing, University of Ulsan, Ulsan 680-749, Korea

E-mail:

초록

주행 시험용 차량에 탑재되는 nickel/metal-hydride 배터리 pack의 내부 구조에 대하여 기존에 생산된 기본 골격을 유지하면서도 열관리를 위하여 보완 가능한 대부분의 인자들에 대한 실험을 수행하였다. 공기흡입구의 크기를 확대하면 배터리 pack의 열관리를 수비게 달성할 수 있으나 pack의 구조 강도가 저하되는 문제점이 있다. 배터리 pack의 구조 강도와 module의 온도 강하를 동시에 추구하기 위하여 공기 흡입구 크기와 모양에 대한 최적화 실험을 수행하였다. Module간 온도 편차 저감을 위하여 유동 장애물을 설치하였고 특정 module의 온도 강하를 위하여 후면부 공기 흡입구라는 새로운 개념을 도입하였다. 이와 같은 복합적인 시도를 통하여 module의 온도를 10 ℃ 정도 낮추는 괄목할 만한 결과를 얻을 수 있었다.

Nickel/metal-hydride battery modules in fleet test of an electric vehicle were performed in effort to improve thermal management. Thermal control of battery pack can be accomplished without difficulty if the air inlet hole size was increased but this results in weakening of mechanical strength of the pack. Optimization of the air inlet hole size and shape were conducted to improve thermal control scheme with acceptable mechanical strength loss of the pack. Barriers were installed along flow path to reduce temperature deviation among modules. A new concept of the air inlet hole on the rear side was introduced in this research to reduce temperature of specific modules. A temperature drop of 10 ℃ was achieved with a combination of the above-mentioned methods.

Keywords:battery pack;thermal control;energy efficiency;nickel/metal-hydride;electric vehicle

[References]

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Johansson B, Trans. Res., 29(5), 371 (1995)
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[Related Articles]

[1] Gould J, Golob TF, Trans. Res., 3(3), 157 (1998)

[2] VanVorst WD, George RS, Int. J. Hydrog. Energy, 22(1), 31 (1997)

[3] Johansson B, Trans. Res., 29(5), 371 (1995)

[4] California Air Resource Board, Low-Emission Vehicles/Clean Fuels and New Gasoline Specifications-Progress Report (1989)

[5] Kempton W, Kubo T, Energy Policy, 28(1), 9 (2000)

[6] Funk K, Rabl A, Trans. Res., 4(6), 397 (1999)

[7] Haschka F, Warthmann W, Benczur-Urmossy G, J. Power Sources, 7(1), 32 (1998)

[8] Suzuki K, Nishida K, Tsubota M, J. Power Sources, 59, 171 (1996)

[9] Lenain P, Kechmire M, Smaha JP, J. Power Sources, 53(2), 335 (1995)

[10] Tuphorn H, J. Power Sources, 4(1), 47 (1992)

[11] Botte GG, Subramanian VR, White RE, Electrochim. Acta, 45(15-16), 2595 (2000)

[12] Al Hallaj S, Maleki H, Hong JS, Selman JR, J. Power Sources, 83(1-2), 1 (1999)

[13] Baudry P, Lascaud S, Majastre H, Bloch D, J. Power Sources, 68(2), 432 (1997)

[14] Baudry P, Neri M, Gueguen M, Lonchampt G, J. Power Sources, 54(2), 393 (1995)

[15] Cho YI, Frank H, Halpert G, J. Power Sources, 21(3), 183 (1987)

[16] Lee J, Choi KW, Yao NP, Christianson CC, J. Electrochem. Soc., 133(7), 1286 (1986)

[17] Gay EC, Arntzen JD, Fredrickson DR, Christianson CC, Hornstra F, Yao NP, Impact of Temperature on Cycle Life of Globe ISOA EV-3000 Lead-Acid Batteries, The Electchem. Soc. Extended Abs., 84-2, New Orleans, LA, 55 (1984)