Transient Thermal Analysis of a Li-Ion Battery Module for Electric Cars Based on Various Cooling Fan Arrangements

Ho Van-Thanh, Kyoungsik Chang, Sang Wook Lee and Sung Han Kim
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Ho Van-Thanh: Department of Mechanical Engineering, University of Ulsan, Ulsan 44610, Korea
Kyoungsik Chang: Department of Mechanical Engineering, University of Ulsan, Ulsan 44610, Korea
Sang Wook Lee: Department of Mechanical Engineering, University of Ulsan, Ulsan 44610, Korea
Sung Han Kim: Scanjet Macron, Ulsan 44988, Korea

Energies, 2020, vol. 13, issue 9, 1-15

Abstract: This paper presents a three-dimensional modeling approach to simulate the thermal performance of a Li-ion battery module for a new urban car. A single-battery cell and a 52.3 Ah Li-ion battery module were considered, and a Newman, Tiedemann, Gu, and Kim (NTGK) model was adopted for the electrochemical modeling based on input parameters from the discharge experiment. A thermal–electrochemical coupled method was established to provide insight into the temperature variations over time under various discharge conditions. The distribution temperature of a single-battery cell was predicted accurately. Additionally, in a 5C discharge condition without a cooling system, the temperature of the battery module reached 114 °C, and the temperature difference increased to 25 °C under a 5C discharging condition. This condition led to the activation of thermal runaway and the possibility of an explosion. However, the application of a reasonable fan circulation and position reduced the maximum temperature to 49.7 °C under the 5C discharge condition. Moreover, accurate prediction of the temperature difference between cell areas during operation allowed for a clear understanding and design of an appropriate fan system.

Keywords: lithium-ion battery; thermal-electrochemical coupled; electric vehicle; computational fluid dynamics (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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