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Cooling performance of cylindrical battery pack based on thermal management system with heat pipe

GAN Yunhua1,2 WANG Jianqin1,2 LIANG Jialin1,2

(1.School of Electric Power, South China University of Technology, Guangzhou, Guangdong, China 510640)
(2.Guangdong Province Engineering Research Center of High Efficient and Low Pollution Energy Conversion, Guangzhou, Guangdong, China 510640)

【Abstract】The reasonable design of a thermal management system is a key to improve the battery cooling performance. A battery thermal management system based on the combination of heat pipe and conduction element was proposed for a cylindrical battery pack. A numerical model was developed and validated with experimental results. The effect of conduction element on the thermal performance of the proposed thermal management system was numerically investigated. The results show that the conduction element significantly improves the thermal performance of the proposed thermal management system due to the increase of the contact area between conduction elements and batteries. The thermal performance can be improved by increasing the circumference angle between conduction elements and batteries to enlarge the contact area. But this improvement effect is slight when the circumference angle is greater than 95°. Its temperature can be slightly decreased by increasing the thickness of conduction element, and it is suggested that the thickness should be within 4 mm.

【Keywords】 cylindrical battery; heat pipe; conduction element; cooling performance; experimental validation; numerical analysis;

【DOI】

【Funds】 Guangzhou Science and Technology Plan (201707010071) National Natural Science Foundation of China (51776077)

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This Article

ISSN:0438-1157

CN: 11-1946/TQ

Vol 69, No. 05, Pages 1964-1971

May 2018

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Article Outline

Abstract

  • Introduction
  • 1 Modeling
  • 2 Model validation
  • 3 Results and discussion
  • 4 Conclusions
  • Symbol description
  • References