A novel tree -like bionic structure for liquid-cooled lithium-ion battery plates

IF 4.9 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Thermal Sciences Pub Date : 2024-05-03 DOI:10.1016/j.ijthermalsci.2024.109098

Sen Zhan , Yuchen Que , Yanli Yin , Zonghua Li , Cheng Yu

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Abstract

To maintain the optimal operating temperature range for the power batteries of new energy vehicles, this paper proposes a novel tree-structured channel cold plate. An orthogonal experimental approach was employed to investigate the effects of inlet flow rate m, inlet channel quantity n, channel width d, and hierarchy ratio α on battery temperatures T_max, standard temperature difference T_σ, and pressure drop ΔP. Non-dominated sorting genetic algorithm II (NSGA-II) was utilized to obtain an optimized solution set. The results reveal that the tree-like cold plate configuration including m = 15 g/s, n = 7 and 8, d = 3 mm, and α = 1:2:1 demonstrates superior performance. Thus, the developed cold plate was further compared with the conventional straight-through cold plate design. The results indicate that the proposed tree-like cold plate exhibits the maximum decreases of 13.94% in T_max, 52.94% in T_σ, and 61.5% in ΔP. The most significant improvement in the composite indicator PEC was 89%. In conclusion, the tree-like channel cold plate developed in this study provides excellent heat dissipation capability for power batteries, offering valuable insights for the thermal design of battery liquid cooling systems.

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用于液冷锂离子电池板的新型树状仿生结构

为了保持新能源汽车动力电池的最佳工作温度范围，本文提出了一种新型树状结构通道冷板。采用正交实验方法研究了入口流量 m、入口通道数量 n、通道宽度 d 和层次结构比 α 对电池温度 Tmax、标准温差 Tσ 和压降 ΔP 的影响。利用非支配排序遗传算法 II (NSGA-II) 获得了优化解集。结果表明，树状冷板配置（包括 m = 15 g/s、n = 7 和 8、d = 3 mm 和 α = 1:2:1）性能优越。因此，我们进一步将开发的冷板与传统的直通式冷板设计进行了比较。结果表明，所提出的树状冷板的 Tmax 最大下降了 13.94%，Tσ 下降了 52.94%，ΔP 下降了 61.5%。综合指标 PEC 的最大改进幅度为 89%。总之，本研究中开发的树状通道冷板为动力电池提供了出色的散热能力，为电池液冷系统的热设计提供了宝贵的启示。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.