4.7 Article

Experimental study on the thermal performance of a battery thermal management system using heat pipes

Journal

CASE STUDIES IN THERMAL ENGINEERING
Volume 26, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.csite.2021.101029

Keywords

Electric vehicle; Battery thermal management system; Water cooling; Heat pipe

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Funding

  1. Research Chair Grant National Science and Technology Development Agency (NSTDA)
  2. King Mongkut's University of Technology Thonburi through the KMUTT 55th Anniversary Commemorative Fund

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This study designed and experimented a heat pipe-based battery thermal management system under high input power, showing that the system could effectively control the battery temperature within an acceptable range and had a high heat transfer efficiency.
A battery thermal management system (BTMS) plays a significant role in an electric vehicle (EV)'s battery pack to avoid the adverse effect of extreme heat being generated during application. A heat pipe-based BTMS is regarded as an alternative technique to maintain an optimum working temperature of the lithium-ion batteries (LIBs) used in EVs. In this study, the heat pipe-based BTMS was designed and experimented under high input power. The battery surrogate was sandwiched with L- and I-shaped heat pipes, and heated at 30, 40, 50 and 60 W. The heat pipes' condenser sections were cooled by water at 0.0167, 0.0333 and 0.05 kg/s. Findings revealed that the designed heat pipe-based BTMS could give the maximum temperature (T-max) below 55 degrees C, even at the highest input power, and provide the temperature difference (Delta T) below 5 degrees C. It exhibited capability to transfer more than 92.18% of the heat generated. Controlling the T-max and Delta T within the desirable range demonstrates that the heat pipe-based BTMS is viable and effective at higher heat loads.

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