锂离子电池组耦合相变材料优化及液冷热管理

IF 6.1 2区工程技术 Q2 ENERGY & FUELS

Applied Thermal Engineering Pub Date : 2025-04-15 DOI:10.1016/j.applthermaleng.2025.126508

Zhuang Kang , Xiaoyuan Wang , Ruixue Yin , Li Xu , Jinxing Wu , Sen Wang , Qingguo Peng

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引用次数: 0

摘要

电动汽车（EV）的快速发展对电池的高放电率、长循环寿命和高能量密度等先进性能提出了更高的要求。为确保高倍率放电电池的安全运行，提出了一种集成相变材料（PCM）和液体冷却的混合电池热管理系统（BTMS），该系统采用多鳍片通道包裹电池和多层 PCM 混合，以实现电池组在高倍率放电时更好的热性能。对采用风冷、液冷、PCM 冷和耦合 BTMS 的电池组的热性能进行了评估和比较，并测试了液冷配置、PCM 层厚度、冷却剂流速和环境温度对热调节的影响。结果表明，耦合 BTMS 具有提高电池安全性和性能的潜力，为在高放电率下运行的电动汽车电池的热管理提供了可行的解决方案。此外，还确定了一种具有良好工作性能和高效率的热管理方法。耦合 BTMS 电池组表现出更好的性能和温度均匀性，即在放电速率为 5C 时，Tmax = 36.13 °C，ΔT = 4.04 °C。它为动力电池在高放电率下的安全运行提供了可行的解决方案。

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Optimizing of coupled phase change materials and liquid cooling thermal management for Li-ion battery pack

The rapid augment of electric vehicles (EVs) intensifies the requirements for advanced battery performance in terms of high discharge rates, long cycle life, and high energy density. To ensure the safe operation of high-rate discharge batteries, a hybrid battery thermal management system (BTMS) integrating phase-change material (PCM) and liquid cooling is proposed, which adopts multi-fin channel wrapped cells and multi-layer PCM mixing to achieve better thermal performance of the battery pack at a high discharge rate. The thermal performance of packs with air-cooled, liquid-cooled, PCM-cooled, and coupled BTMSs are evaluated and compared, and effects of liquid-cooling configurations, PCM layer thickness, coolant flow rate, and ambient temperature on thermal regulation are tested. The results demonstrate the coupled BTMS's potential to improve battery safety and performance, providing a viable solution for thermal management in EV batteries operating under high discharge rates. Furthermore, a thermal management approach with good working performance and high efficiency is identified. The coupled BTMS battery pack exhibits better performance and temperature uniformity, i.e., T_max = 36.13 °C and ΔT = 4.04 °C, at discharge rate 5C. It provides a feasible solution for the safe operation of power battery at a high discharge rate.

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来源期刊

Applied Thermal Engineering 工程技术-工程：机械

CiteScore

11.30

自引率

15.60%

发文量

1474

审稿时长

57 days

期刊介绍： Applied Thermal Engineering disseminates novel research related to the design, development and demonstration of components, devices, equipment, technologies and systems involving thermal processes for the production, storage, utilization and conservation of energy, with a focus on engineering application. The journal publishes high-quality and high-impact Original Research Articles, Review Articles, Short Communications and Letters to the Editor on cutting-edge innovations in research, and recent advances or issues of interest to the thermal engineering community.