전기식 건설·농기계 충전용 배터리팩 콜드플레이트 냉각 성능 최적화 = Optimization of Cold-Plate Cooling Performance for Charging Battery Packs in Electric Construction and Agricultural Machinery

다국어 초록 (Multilingual Abstract)

This study focused on enhancing the thermal reliability of mobile lithium-ion battery packs used in construction and agricultural machinery by optimizing cold-plate cooling performance. Two controllable factors, coolant velocity (A) and channel diameter (B), were tested at three levels each, arranged using a Taguchi L9 orthogonal array. A U-shaped cold plate was modeled for conjugate Computational Fluid Dynamics (CFD) analysis with a structured hexahedral mesh. The response variables were defined as the temperature difference ( ) between the coolant inlet and outlet, and the maximum top-plate temperature (max). Analysis of Variance (ANOVA) revealed that channel diameter had the most significant impact (  ) =69.2 %, max=66.3 %), while coolant velocity also had meaningful effects (25.3 % and 28.5 %). The residuals for both responses were less than 6%, indicating that the main factors accounted for most of the variation. The optimal conditions (velocity = 1.6 m/s, diameter = 9 mm) resulted in max=54.08 ℃ and  =10.79 ℃. Unlike methods that focus on increasing channel count, this study demonstrates that cold-plate performance can be enhanced through easily adjustable factors, offering practical design guidance for the thermal management of battery packs in electric construction and agricultural machinery.