Liu Zeyu, Xiong Chengfeng, Du Xiaofang
College of Automotive Engineering, Wuhan University of Technology, Wuhan, 430070, China.
Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan 430070, China.
Heliyon. 2024 Aug 3;10(15):e35387. doi: 10.1016/j.heliyon.2024.e35387. eCollection 2024 Aug 15.
As one of the key components of electric vehicles, the enhancement of the performance of the power battery is closely intertwined with an efficient Battery Thermal Management System (BTMS). In the realm of BTMS, Flat Heat Pipes (FHP) have garnered considerable attention due to their lightweight structure and excellent thermal conductivity. Thus, a BTMS configuration scheme based on FHP is proposed in this study. Utilizing orthogonal design and fuzzy grey relational analysis as the evaluation methods, coupled with numerical simulations, an investigation into the influence of four structural parameters of the novel biomimetic fins (namely, the diameter, height, spacing of protrusions, and height of cooling fins) on the temperature distribution of the battery pack is conducted. The research findings indicate that to maintain the battery within an optimal operational temperature range, the optimal dimensional parameters should be controlled at 17.5 mm, 4 mm, 13 mm, and 90 mm, respectively. Subsequent sensitivity analysis reveals that the height of the protrusions exhibits the most significant influence on the maximum temperature of the module, whereas the height of the cooling fins exerts a considerable impact on the consistency of the module temperature. The optimized maximum temperature is determined to be 36.52 °C, with a temperature difference of 2.65 °C.
作为电动汽车的关键部件之一，动力电池性能的提升与高效的电池热管理系统（BTMS）密切相关。在BTMS领域，扁平热管（FHP）因其轻质结构和出色的导热性而备受关注。因此，本研究提出了一种基于FHP的BTMS配置方案。采用正交设计和模糊灰色关联分析作为评价方法，并结合数值模拟，研究了新型仿生翅片的四个结构参数（即直径、高度、凸起间距和散热鳍片高度）对电池组温度分布的影响。研究结果表明，为了将电池维持在最佳工作温度范围内，最佳尺寸参数应分别控制在17.5毫米、4毫米、13毫米和90毫米。随后的敏感性分析表明，凸起高度对模块的最高温度影响最为显著，而散热鳍片高度对模块温度的一致性有相当大的影响。优化后的最高温度为36.52℃，温差为2.65℃。
