Research on Perfluoropolyether Phase Change Immersion Thermal Management System for Lithium Battery Energy Storage

LI Jiangang; RAO Xiaoyu; SHENG Shitao; DONG Ti; MA Qingshan; CAO Wenjiong

doi:10.14044/j.1674-1757.pcrpc.2026.02.006

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Research on Perfluoropolyether Phase Change Immersion Thermal Management System for Lithium Battery Energy Storage

POWER CAPACITOR & REACTIVE POWER COMPENSATION | Development of New Energy Storage Technologies Such as Supercapacitors and Their Applications in the New Power System

Research on Perfluoropolyether Phase Change Immersion Thermal Management System for Lithium Battery Energy Storage
锂电储能全氟聚醚相变浸没热管理系统研究
School of New Energy and Power Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
Gansu Province Energy Storage System and Operation Control Technology Innovation Center, Lanzhou 730070, China
Vol. 47, Issue 2, Pages: 52-59(2026)
DOI：10.14044/j.1674-1757.pcrpc.2026.02.006
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LI Jiangang, RAO Xiaoyu, SHENG Shitao, et al. Research on Perfluoropolyether Phase Change Immersion Thermal Management System for Lithium Battery Energy Storage[J]. Power Capacitor & Reactive Power Compensation, 2026, 47(2): 52-59.
DOI：

LI Jiangang, RAO Xiaoyu, SHENG Shitao, et al. Research on Perfluoropolyether Phase Change Immersion Thermal Management System for Lithium Battery Energy Storage[J]. Power Capacitor & Reactive Power Compensation, 2026, 47(2): 52-59. DOI： 10.14044/j.1674-1757.pcrpc.2026.02.006.

摘要

针对高能量密度锂电储能系统面临的热失控及热均衡问题，本文提出一种基于相变材料全氟聚醚与浸没式冷却技术结合的复合热管理系统。系统利用浸没冷却与主动循环回路相结合，构建包含冷凝器、循环泵、电池箱、及传感器网络的实验平台，分析电池在不同放电工况下的产热行为，并实时监测温度、产热功率等关键参数。通过实验验证系统在1C、4C放电倍率下的散热能力与温度均衡性的控制效果。结果表明，该复合系统能够将电池模组的最高温度控制在45℃以内，同时将模组内部温升保持在7℃以内。本研究成果为提升锂电储能系统的热安全性与能量效率提供一种新的热管理方案，具有重要的工程应用价值。

Abstract

As for the issues of thermal runaway and thermal balance in high energydensity lithium battery energy storage systems，in this paper a hybrid thermal management system that combinines phase change material perfluoropolyether with immersion cooling technology is proposed. The system integrates immersion cooling with an active circulation loop to establish an experimental platform comprising a condenser， circulation pump，battery pack and sensor network. It analyzes the heat generation behavior of batteries under different discharge conditions and monitors such key parameters as temperature and heat generation power in real time. The control effect of both heat dissipation and temperature uniformity of the system at 1C and 4C discharge rates is verified by experiment. The result shows that the hybrid system can maintain the maximum temperature of the battery module within 45℃，while simultaneously limiting the internal temperature rise of the module under 7℃. The research results of this study provide a novel thermal management solution for enhancing the thermal safety and energy efficiency of lithium battery energy storage systems，demonstrating significant engineering application value..

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Li Jiangang

Rao Xiaoyu

Sheng Shitao

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School of New Energy and Power Engineering, Lanzhou Jiaotong University., Ltd

Gansu Province Energy Storage System and Operation Control Technology Innovation Center., Ltd

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