Research on the thermal protection performance of fireproof and heat-insulating materials with different thicknesses

Abstract

This study systematically analyzes the protective performance of aerogel thermal insulation materials against the thermal runaway of battery modules through a combination of experiments and numerical simulations. The results show that wrapping with fireproof and thermal insulation materials can significantly reduce the peak temperature of the battery and effectively delay the temperature rise rate for more than 40 minutes. Moreover, increasing the thickness significantly improves the protective effect. The fireproof performance of aerogel is jointly affected by thickness, thermal conductivity, density, and specific heat capacity, among which thickness and thermal conductivity have the most prominent effects. Increasing the number of layers and expanding the gaps between materials can enhance the thermal insulation effect. The results of this study can provide theoretical support and practical reference for the design of battery thermal safety protection.