动力电池用导热硅胶材料研制及性能研究
Study on Preparation and Properties of Thermal Conductive Silica Gel for Power Battery

新能源汽车动力电池热管理是保障电池安全运行的决定性因素，也是提升电池系统寿命等性能指标的关键所在。导热硅胶材料是动力电池热管理的最佳解决方案。本文采用真空搅拌、压延成型等工艺制备了导热硅胶材料。材料性能测试表面，导热系数在1.56 W/m？K，击穿电压为11,056 Vac/mm，具有优异的导热、绝缘、减震、阻燃特性，可用于新能源汽车动力电池模组之间不规则缝隙部位，实现电池组与铝散热器的热量传递，同时形成电气绝缘层与缓冲层，对电池组形成保护，延长使用寿命。
The thermal management of the power battery of new energy vehicles is the decisive factor to ensure the safe operation of the battery, and is also the key to improve the battery system life and other performance indicators. Thermal conductive silicone material is the best solution for thermal management of power batteries. The thermal conductive silica gel material was prepared by vacuum stirring and calendering. Material performance test surface, thermal conductivity of 1.56 W/m？K, breakdown voltage of 11,056 Vac/mm, with excellent thermal conductivity, insulation, shock absorption, flame retardant characteristics, can be used for new energy vehicle power battery module between the irregular gap, to achieve the heat transfer between the battery pack and alu-minum radiator, while forming an electrical insulation layer and buffer layer. It protects the battery pack and prolongs the service life.