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J. Hefei Univ. Tech. (Nat. Sci.)

合肥工业大学学报(自然科学版)

JOURNAL OF HEFEI UNIVERSITY OF TECHNOLOGY (NATURAL SCIENCE)

Competent Authorities: Ministry of Education of the People's Republic of China

Sponsor by: Hefei University of Technology

ISSN 1000-1646, CN 34-1001/N

Experimental study on liquid cooling performance of batteries with microencapsulated phase change material suspension

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基于相变微胶囊悬浮液的电池液冷性能实验研究

Journal Information

J. Hefei Univ. Tech. (Nat. Sci.), Jan.2026, Vol.49 No.1: 36-42

DOI: 10.3969/j.issn.1003-5060.2026.01.005

Authors

LI Xuechun, YANG Lei

(School of Automobile and Traffic Engineering, Hefei University of Technology, Hefei 230009, China)

Abstract and Keywords

Abstract: This paper builds an experimental platform for battery liquid-cooled plate heat dissipation system. Pure water, microencapsulated phase change material suspension (MEPCMS) and one-component/two-component $ Fe_{3}O_{4} $ nanoparticle-reinforced MEPCMS were used as cooling fluids, respectively. Comparative analysis of the cooling effect of coolants on simulated batteries at different inlet flow rates and suspension mass fractions was conducted. The results show that MEPCMS with a mass fraction of 20% is more effective in cooling compared to pure water, reducing the battery temperature by 8.34% at 2.0C discharge multiplier. The temperature drop performance of MEPCMS increases with increasing inlet flow rate and mass fraction. Matching the mass fraction and inlet flow rate for optimal battery cooling requires that the internal phase change material is always in a molten state during flow. In addition, the nanoparticle-enhanced suspension is cooled more effectively. Considering the two parameter indicators of average battery temperature and flow pressure drop, the one-component suspension with nanoparticles added in the shell is a more suitable cooling medium for heat dissipation in automotive batteries.

Keywords: phase change microcapsule; suspension; battery cooling; convective heat transfer; nanoparticle

作者信息

李雪淳，杨磊

(合肥工业大学汽车与交通工程学院，安徽合肥230009)

摘要和关键词

摘要: 文章搭建了电池液冷散热系统实验平台，分别采用纯水、相变微胶囊悬浮液（microencapsulated phase change material suspension，MEPCMS）及单组分/双组分四氧化三铁纳米强化MEPCMS作为冷却液，在不同入口流量及悬浮液质量分数下，冷却液对模拟电池的冷却效果进行对比分析。结果表明：质量分数为20%的相变微胶囊悬浮液相比纯水冷却效果更好，将2.0C放电倍率下电池温度降低8.34%；相变微胶囊悬浮液的温降性能随入口流量和质量分数的增大而增大，对电池降温效果最佳的质量分数和入口流量进行匹配时，需保持流动时内部相变材料始终处于融化状态。此外，经纳米颗粒强化后的悬浮液冷却效果更佳，综合考虑电池平均温度和流动压降2个参数指标，发现壳体内添加纳米颗粒的单组分悬浮液是一种更为合适的汽车电池散热冷却介质。

关键词: 相变微胶囊；悬浮液；电池冷却；对流换热；纳米颗粒

Funding

国家自然科学基金资助项目（52306194）

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