A liquid-cooled plate based on bionic flow channels evolved from the shape of leaf veins and tree roots

IF 4.9 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Thermal Sciences Pub Date : 2024-10-09 DOI:10.1016/j.ijthermalsci.2024.109468

Hanxu Xia, Jun Wang, Yan Shen, Kai Fang

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引用次数: 0

Abstract

With the rapid development of lithium-ion (Li-ion) batteries, battery thermal management (BTMS) is increasingly essential for the temperature control of Li-ion batteries. The energy required to control temperature is coming into focus. In order to consume less energy to control temperature and improve temperature uniformity, the liquid-cooled plate (LCP) based on bionic flow channels evolved from the shape of leaf veins and tree roots is proposed. In this BLCP, different from the others BLCPs, it is divided into a reinforced heat exchange area located in the middle and back part of the plate and a normal area located in the front part of the plate. Firstly, 16 sets of orthogonal tests are conducted based on four parameters: the distance of the hexagon from the outlet (a), the distance from the inlet (b), the distance between two adjacent hexagons (c) and the size of the hexagon (d). Secondly, Optimization was investigated based on NSGA-II for two objectives: temperature and pressure drop. The simulation results are analyzed based on the optimized structural parameters (a = 30 mm, b = 8 mm, c = 50 mm and d = 90 mm). After Comparing the optimization results with the simulation results, the temperature and pressure drop errors were 0.56 percent and 3.8 percent, respectively. The effects of flow rate and thickness of the fluid domain on temperature and pressure drop are next discussed separately. Finally, after comparing the optimized bionic liquid cooling plate (BLCP) with the conventional liquid cooling plate (CLCP) based on temperature pressure drop, velocity, and synergy angle, conclusions are made at the same inlet width, height, flow rate, and velocity (V = 0.2 m/s). This leads to the criterion of energy loss becoming only the pressure drop. The BLCP for pressure drop is 14.2 percent lower than the CLCP, which means less energy loss. The maximum temperature of the BLCP is 0.7 °C lower than that of the CLCP. Furthermore, the former has a better ability to suppress the rate of temperature rise and better temperature uniformity. In addition, this proposed new structure and research methods can be applied to the subsequent study of LCP.

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基于从叶脉和树根形状演化而来的仿生流道的液体冷却板

随着锂离子（Li-ion）电池的快速发展，电池热管理（BTMS）对锂离子电池的温度控制越来越重要。控制温度所需的能量逐渐成为关注的焦点。为了降低控温能耗并提高温度均匀性，有人提出了基于叶脉和树根形状的仿生流道的液冷板（LCP）。该液冷板与其他液冷板不同，它分为位于液冷板中后部的强化热交换区和位于液冷板前部的普通区。首先，根据四个参数进行了 16 组正交试验：六边形与出口的距离（a）、与入口的距离（b）、相邻两个六边形之间的距离（c）和六边形的尺寸（d）。其次，基于 NSGA-II 对温度和压降这两个目标进行了优化研究。模拟结果根据优化后的结构参数（a = 30 毫米、b = 8 毫米、c = 50 毫米和 d = 90 毫米）进行分析。将优化结果与模拟结果进行比较后发现，温度和压降误差分别为 0.56% 和 3.8%。接下来分别讨论了流速和流体域厚度对温度和压降的影响。最后，在相同的入口宽度、高度、流速和速度（V = 0.2 m/s）条件下，根据温度压降、速度和协同角对优化的仿生液体冷却板（BLCP）和传统液体冷却板（CLCP）进行比较，得出结论。这样，能量损失的标准就只剩下压降了。BLCP 的压降比 CLCP 低 14.2%，这意味着能量损失更少。BLCP 的最高温度比 CLCP 低 0.7 °C。此外，前者抑制温升速度的能力更强，温度均匀性更好。此外，所提出的新结构和研究方法还可应用于 LCP 的后续研究。

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来源期刊

International Journal of Thermal Sciences 工程技术-工程：机械

CiteScore

8.10

自引率

11.10%

发文量

531

审稿时长

55 days

期刊介绍： The International Journal of Thermal Sciences is a journal devoted to the publication of fundamental studies on the physics of transfer processes in general, with an emphasis on thermal aspects and also applied research on various processes, energy systems and the environment. Articles are published in English and French, and are subject to peer review. The fundamental subjects considered within the scope of the journal are: * Heat and relevant mass transfer at all scales (nano, micro and macro) and in all types of material (heterogeneous, composites, biological,...) and fluid flow * Forced, natural or mixed convection in reactive or non-reactive media * Single or multi–phase fluid flow with or without phase change * Near–and far–field radiative heat transfer * Combined modes of heat transfer in complex systems (for example, plasmas, biological, geological,...) * Multiscale modelling The applied research topics include: * Heat exchangers, heat pipes, cooling processes * Transport phenomena taking place in industrial processes (chemical, food and agricultural, metallurgical, space and aeronautical, automobile industries) * Nano–and micro–technology for energy, space, biosystems and devices * Heat transport analysis in advanced systems * Impact of energy–related processes on environment, and emerging energy systems The study of thermophysical properties of materials and fluids, thermal measurement techniques, inverse methods, and the developments of experimental methods are within the scope of the International Journal of Thermal Sciences which also covers the modelling, and numerical methods applied to thermal transfer.