Abstract

This study addresses the critical issue of thermal management in lithium-ion batteries, presenting an innovative battery thermal management system that integrates heat pipes and a cold plate (IHPCP). Effective thermal management is crucial for enhancing the performance and longevity of lithium-ion batteries. Using three-dimensional numerical simulations, the study evaluates the impact of various parameters, including the number of heat pipes, the ratio of the plate runner's width to the heat pipe's thickness (ω), and the ratio of the cold plate's thickness to the battery's thickness (ζ), on battery temperature regulation. The results demonstrate that incorporating heat pipes significantly reduces the maximum battery temperature and improves temperature uniformity. Optimal heat transfer efficiency was achieved with seven heat pipes, resulting in a 21.7% reduction in maximum dimensionless temperature and a 16.4% decrease in temperature variance at a Reynolds number of 100. The Performance Evaluation Criterion (PEC) reached 3.1, indicating superior thermal management performance. This work surpasses previous efforts in the literature by demonstrating the enhanced thermal regulation capabilities of the IHPCP system, offering a compact and efficient solution for battery thermal management.