Paraffin/graphite/boron nitride composite as a novel phase change material for rapid heat absorption in battery thermal management technology

被引：1

作者：

Chen, Yijun ^{[1
]}

Tian, Chengxiang ^{[1
,2
]}

Tu, Yibo ^{[1
]}

Zhang, Zhen ^{[1
]}

Wu, Yining ^{[1
]}

Wang, Donghua ^{[1
]}

Jiang, Ming ^{[1
]}

Zang, Yue ^{[1
]}

Weng, Lei ^{[3
]}

Yan, Wensheng ^{[1
]}

机构：

[1] Hangzhou Dianzi Univ, Inst Carbon Neutral & New Energy, Sch Elect & Informat, Hangzhou 310018, Peoples R China

[2] Tianjin Univ, Coll Elect Automat & Informat Engn, Tianjin 300072, Peoples R China

[3] Zhejiang Minglei Lithium Energy Technol Co Ltd, 188 Yingdong north Rd, Ningbo 315145, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2024年 / 235卷

关键词：

Thermal management; Phase change material; Lithium-ion battery; Rapid heat absorption; Cost-effective; OPTIMIZATION; GRAPHITE; MODULE;

D O I：

10.1016/j.ijheatmasstransfer.2024.126214

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Phase change material (PCM) cooling is widely employed in the thermal management of compact battery packs. Thermal protection triggered by rapid temperature rise shortens the effective discharge time in high-rate discharge, making it essential to prepare PCM that rapidly absorbs heat at high temperatures. However, research on the thermal absorption performance and insulating properties of PCM at high-rate discharge remains limited. Herein, we innovatively propose a thermally conductive and insulating PCM with a wide phase transition temperature to address the overheating issue in batteries at 7 C, 8 C and 9 C discharge rates. The C236 consists of paraffin (PA236), graphite and boron nitride with a ratio of 6: 2: 2, which achieves outstanding thermal performance with a latent heat of up to 138.0 J/g and a high-volume resistivity of 1.6 x 108 Omega & sdot;m. It is found that at a discharge rate of 7 C, the C236 with a thickness of 3 mm effectively maintains the temperature below 80 degrees C. At discharge rates of 8 C and 9 C, the PCM significantly reduces the battery temperature by 26.9 % and 32.5 %, respectively, highlighting the rapid heat absorption capability at high temperatures. Furthermore, after four cycles at a 9 C discharge rate, the temperature differential of the battery remains below 5 degrees C. The lowcost PCM provides a new experimental reference for battery thermal management in high-rate discharge, with broad application prospects.

引用

页数：10

共 41 条

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