Numerical study of fin geometry on the heat transfer characteristics of 72 V ECU heatsink for an electric three-wheeler

Abstract

This study aimed to numerically investigate the parametric effects of fin geometry on the heat transfer characteristics of 72 V electronic control unit (ECU) heatsink for an electric three-wheeler. The temperature distribution, fin efficiency, and thermal resistance of the 72 V ECU heatsink were compared by varying the fin geometry parameters, including fin thickness, number, height, and depth. The maximum cooling performance was observed for the proposed fin arrangement with a fin thickness of 2.1 mm, fin number of 60, fin height of 16 mm, and fin depth of 8 mm, in comparison with the existing heatsink model. The proposed 72 V ECU heatsink model was validated with the experimental results of the existing heatsink model and indicated a good agreement within ±4.97 %. The optimized ECU heatsink enhanced the heat transfer performance, thereby decreasing the temperatures of the heatsink, capacitor, and metal-oxidesemiconductor field-effect transistor for the proposed 72 V ECU heatsink model by 16.88 %, 12.71 % and 18.95 %, respectively, in comparison with the existing heatsink model.

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Correspondence to Moo-Yeon Lee.

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Recommended by Associate Editor Chang Yong Park

Gihan Ekanayake is currently a master candidate at the Department of Mechanical Engineering, Dong-A University, Republic of Korea. He received his bachelor’s degree from the University of Peradeniya, Sri Lanka, in 2013. His research interests include electric vehicle power train and thermal management of lithium ion battery.

Mahesh Suresh Patil is currently a Ph.D. candidate at the Department of Mechanical Engineering, Dong-A University, Republic of Korea. He received his master’s degree in Thermal Sciences from the National Institute of Technology Calicut, India, in 2015. He received his bachelor’s degree from the Sardar Vallabhbhai National Institute of Technology, Surat, India, in 2011. His research interests include electric cars and thermal management systems.

Jae-Hyeong Seo is currently a Ph.D. candidate at the Department of Mechanical Engineering, Dong-A University, Republic of Korea. He received his master’s degree from the same university in 2011. His research interests include thermal management system for an electric vehicle and nanofluid heat transfer.

Moo-Yeon Lee is currently an Associate Professor at the Department of Mechanical Engineering, Dong-A University, Republic of Korea. His main research interests include heat and mass transfer, new and renewable energy conversion system, and thermal management system for electric cars.

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Ekanayake, G., Patil, M.S., Seo, JH. et al. Numerical study of fin geometry on the heat transfer characteristics of 72 V ECU heatsink for an electric three-wheeler. J Mech Sci Technol 33, 1451–1462 (2019). https://doi.org/10.1007/s12206-019-0247-8

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Keywords

  • Electronic control unit
  • Electric three-wheel
  • Fin number
  • Fin thickness