隔热层对锂电池模组热失控蔓延特性影响的实验研究

doi:10.19562/j.chinasae.qcgc.2021.10.005

Abstract

Abstract:

In this paper， an experimental study on the effects of different types of heat insulation layer on the propagation characteristics of thermal runaway in battery modules is conducted. The results show that heat insulation layer can extend the heat spread time of battery module， prevent the fire caused by valve eruption in battery and lower the peak temperature in the thermal runaway of battery module. Among them， the thermal runaway propagation effect of the insulation layer of preoxidized fibers aerogel has the best effect in suppressing the propagation of thermal runaway. Its total propagation time of thermal runaway is 138% longer than that of ceramic aerogel， and 279% longer than that of nano-glass fiber.

Key words: lithium?ion battery module, insulating layer, thermal runaway, heat propagation suppression, aerogel

Runze Chang,Bin Zheng,Xuning Feng,Chengshan Xu,Huaibin Wang,Liduo Chen,Youtang Wang. Experimental Study on the Effects of Thermal Insulation Layers on the Propagation Characteristics of Thermal Runaway in Lithium⁃ion Battery Module[J].Automotive Engineering, 2021, 43(10): 1448-1456.

Figures/Tables 14

References 19

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测温点编号	对应测温点位置
1F	Cell1前表面（与加热器接触面）
1B	Cell1后表面
2F	Cell2前表面
2B	Cell2后表面
3F	Cell3前表面
3B	Cell3后表面
4F	Cell4前表面
4B	Cell4后表面

实验编号	材料类型	隔热层材质	厚度/mm	尺寸/mm
1	纳米纤维类	纳米玻璃纤维	2	150×100
2	气凝胶类	陶瓷气凝胶	2	150×100
3	气凝胶类	预氧化丝气凝胶	2	150×100
4		无

Experimental Study on the Effects of Thermal Insulation Layers on the Propagation Characteristics of Thermal Runaway in Lithium⁃ion Battery Module

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