河海大学机电工程学院;
【目的】针对锂电池高倍率放电产热问题,设计一种基于液态金属冷却的高效液冷方案,并通过多目标优化提升散热性能与系统稳定性。【方法】采用镓基液态金属作为冷却剂,设计单入口双出口液冷回路;利用Fluent软件进行数值模拟,分析冷却剂流速、管道高度、分支递增宽度及倾角对散热性能的影响;结合正交实验法筛选关键参数,并基于NSGA-II多目标遗传算法优化参数组合。【结果】优化后最优参数组合为冷却剂流速0.42 m/s、分支递增宽度0.13 mm、倾角87.38°、管道高度5.76 mm,系统最大温度312.66 K,温差11.66 K,压降0.712 kPa。与初始方案相比,最大温度降低0.53%,温差降低8.04%,压降略有增加。【结论】液态金属冷却显著提升散热效率,流速与管道高度对温度控制影响最大;NSGA-II算法可实现散热性能与压降的均衡优化,为高倍率电池热管理提供有效解决方案。
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基本信息:
DOI:10.19944/j.eptep.1674-8069.2025.02.004
中图分类号:TM912
引用信息:
[1]杨利伟,马凯伦,周小明.基于液态金属冷却的电池液冷方案设计及参数多目标优化[J].电力科技与环保,2025,41(02):206-216.DOI:10.19944/j.eptep.1674-8069.2025.02.004.
基金信息:
国家自然科学基金项目(12372261); 国家能源集团科技项目(DY2023FK078); 中国科学院微重力重点实验室课题(NML202305)