储能科学与技术2025，Vol.14Issue(2)：479-487,9.DOI:10.19799/j.cnki.2095-4239.2024.0784
多孔隔热板对锂离子电池模组热蔓延阻隔效果研究
The effect of porous heat insulation plate on the heat spread barrier of lithium-ion battery module
摘要
Abstract
Lithium-ion batteries have the potential risk of thermal runaway,and a single heat spread can result in the burning of the module or whole package,causing casualties and loss of property,which is a thorny problem that currently hinders the adoption and use of electric vehicles.In this study,a design concept of a porous thermal insulation boardis proposed.This concept uses the low thermal conductivity of the static air in the hole as a sandwich layer between the monomers to prevent heat spread.First,two heat transmission paths of porous heat insulation plates were analyzed:solid heat transfer and gas heat transfer.The heat propagation characteristics of the heat insulation plate under different thicknesses and different hole area ratios were simulated,and the delayed effect of the hole area ratio on heat propagation was verified by experiments.The results showed that at the same thickness,the larger the hole area ratio of the heat insulation plate,the better the thermal runaway barrier effect.The heat spread time within a 3-mm-thick heat insulation board with a 42.12%hole area was 51%higher than that of a non-porous heat insulation board with the same thickness.In addition,the porous heat insulation plate exhibited high structural strength,which could not easily crushable when the battery thermal runaway occurs,preventing the direct contact of adjacent monomer heat transfer.The materials for manufacturing porous heat insulation plates are readily available,it has a simple structure and is easy to process,thereby offering valuable guidance for the structural safety design of future battery modules.关键词
锂离子电池/热失控蔓延/隔热板/多孔结构/孔占比Key words
lithium-ion batteries/thermal runaway spread/heat insulation board/porous structure/hole area ratio分类
信息技术与安全科学引用本文复制引用
李和雨,洪小波,陈子涵,阮殿波..多孔隔热板对锂离子电池模组热蔓延阻隔效果研究[J].储能科学与技术,2025,14(2):479-487,9.基金项目
宁波市重大科技任务攻关项目(2022Z206),浙江省科技计划项目(2022C01072). （2022Z206）
