The Effect of Tab Attachment Positions and Cell Aspect Ratio on Temperature Difference in Large-Format LIBs Using Design of Experiments

Jeong-Joo Lee, Ji-San Kim, Hyuk-Kyun Chang, Dong-Chan Lee and Chang-Wan Kim
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Jeong-Joo Lee: Graduate School of Mechanical Design & Production Engineering, Konkuk University, 120, Neung Dong-ro, Gwangjin-gu, Seoul 05029, Korea
Ji-San Kim: Graduate School of Mechanical Design & Production Engineering, Konkuk University, 120, Neung Dong-ro, Gwangjin-gu, Seoul 05029, Korea
Hyuk-Kyun Chang: Graduate School of Mechanical Design & Production Engineering, Konkuk University, 120, Neung Dong-ro, Gwangjin-gu, Seoul 05029, Korea
Dong-Chan Lee: School of Mechanical Engineering, Konkuk University, 120, Neung Dong-ro, Gwangjin-gu, Seoul 05029, Korea
Chang-Wan Kim: School of Mechanical Engineering, Konkuk University, 120, Neung Dong-ro, Gwangjin-gu, Seoul 05029, Korea

Energies, 2020, vol. 14, issue 1, 1-12

Abstract: Large-format lithium-ion batteries (LIBs) suffer from problems in terms of their product life and capacity due to large temperature differences in LIB cells. This study analyzes the effect of design factors on temperature distribution using a 3D electrochemical–thermal model. The design of experiments methodology is used to obtain the sampling points and analyze the effect of the cell aspect ratio, negative tab attachment position, and positive tab attachment position. These were considered as design factors for the maximum and minimum temperatures, as well as their difference, in large-format LIB cells. The results reveal that the cell aspect ratio, negative tab attachment position, and positive tab attachment position considerably influence temperature distribution. The cell aspect ratio has the most significant effect on the temperature distribution by changing the longest current pathway and the distance between tabs and the lowest temperature point in the LIB cell. A positive tab attachment position affects the maximum temperature, minimum temperature, and the temperature difference due to the heat generation caused by the high resistance of aluminum, which the positive tab is made. Furthermore, a negative tab attachment position affects the minimum temperature due to low resistance.

Keywords: large-format lithium-ion battery; cell aspect ratio; tab attachment position; temperature difference; 3D electrochemical–thermal model; design of experiments; analysis of variance (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 complete reference list from CitEc
Citations: View citations in EconPapers (1)

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