储能科学与技术 ›› 2023, Vol. 12 ›› Issue (9): 2888-2903.doi: 10.19799/j.cnki.2095-4239.2023.0269

• 储能系统与工程 • 上一篇    下一篇

锂离子电池浸没式冷却技术研究综述

曾少鸿1(), 吴伟雄1(), 刘吉臻1, 汪双凤2, 叶石丰3, 冯振宇3   

  1. 1.暨南大学能源电力研究中心,广东 珠海 519070
    2.华南理工大学传热强化与过程节能教育部重点实验室,广东 广州 510641
    3.广东电网有限责任公司广州供电局,广东 广州 510620
  • 收稿日期:2023-04-25 修回日期:2023-05-16 出版日期:2023-09-05 发布日期:2023-09-16
  • 通讯作者: 吴伟雄 E-mail:1042446057@qq.com;weixiongwu@jnu.edu.cn
  • 作者简介:曾少鸿(1995—),男,硕士研究生,研究方向为电池热管理,E-mail:1042446057@qq.com
  • 基金资助:
    国家自然科学基金(52106244);汽车安全与节能国家重点实验室开放基金课题(KFY2223);广东省基础与应用基础研究基金(2022A1515011936);珠海市基础与应用基础研究基金(ZH22017003210053PWC);南方电网公司科技项目资助(GDKJXM20230246(030100 KC23020017)

A review of research on immersion cooling technology for lithium-ion batteries

Shaohong ZENG1(), Weixiong WU1(), Jizhen LIU1, Shuangfeng WANG2, Shifeng YE3, Zhenyu FENG3   

  1. 1.Energy and Electricity Research Center, Jinan University, Zhuhai 519070, Guangdong, China
    2.Key Laboratory of Enhanced Heat Transfer and Energy Conservation of the Ministry of Education, South China University of Technology, Guangzhou 510641, Guangdong, China
    3.Guangzhou Power Supply Bureau of Guangdong Power Grid Co. , Ltd. , Guangzhou 510620, Guangdong, China
  • Received:2023-04-25 Revised:2023-05-16 Online:2023-09-05 Published:2023-09-16
  • Contact: Weixiong WU E-mail:1042446057@qq.com;weixiongwu@jnu.edu.cn

摘要:

电池热管理系统对锂离子电池的安全高效运行具有重要意义。浸没式冷却技术较传统热管理技术在温控性能和能效等方面优势明显,而且随着电动汽车和储能电站的快速发展,浸没式冷却系统的研究逐渐受到重视。本文首先从导热性、黏性、密度、安全性、环保性、经济性等角度,系统总结目前常用的五类介电流体:电子氟化液、碳氢化合物、酯类、硅油类和水基流体,指出不同介电流体的优势与劣势。然后依据电池系统工作温度特性,详细评述国内外浸没式冷却在低温预热、常温冷却、热失控抑制方面的研究进展。低温预热研究尚少,常温冷却分为单相液体冷却和气液相变冷却,具有高闪点的介电流体在热失控发展的不同时期均起到抑制作用。最后,介绍了该领域目前的探索或示范性工作,并提出锂离子电池浸没式系统介电流体未来的发展方向。其中,电子氟化液和合成碳氢化合物相对使用成熟,酯类和硅油类的研究较少,水基流体亟需解决电绝缘问题。本文可为电化学储能系统浸没式冷却系统设计提供参考。

关键词: 锂离子电池, 电池热管理, 浸没式冷却, 介电流体

Abstract:

The thermal management system of batteries is of great significance to the safe and efficient operation of lithium batteries. Compared with traditional thermal management technology, immersion cooling technology has obvious advantages in controlling temperature and energy efficiency. With the rapid development of electric vehicles and energy storage power stations, research on immersion cooling systems has gained increasing attention. This paper first systematically summarizes the five commonly used dielectric fluids, including electronic fluorinated fluids, hydrocarbons, esters, silicone oils, and water-based fluids, from thermal conductivity, viscosity, density, safety, environmental protection, and economy perspectives. Then, according to the battery system's operating temperature characteristics, the research progress of immersion cooling in low-temperature preheating, room temperature cooling, and thermal runaway suppression is reviewed in detail. There is still a lack of research on low-temperature preheating. Ambient temperature cooling can be achieved through single-phase liquid cooling or gas-liquid phase change cooling. Dielectric fluids with high flash points may be crucial in suppressing thermal runaway during the battery system failure. Finally, the current progress of this field is introduced, and the future development direction of dielectric fluids for lithium-ion battery immersion systems is proposed. Among them, electronic fluorinated fluids and synthetic hydrocarbons are relatively mature, esters and silicone oils are less studied, and water-based fluids urgently need to solve the electrical insulation problem. This paper can provide a reference for designing an immersion cooling system for electrochemical energy storage systems.

Key words: lithium-ion battery, battery thermal management, immersion cooling, dielectric fluid

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