With the rapid growth of the new energy vehicle market, the safety performance of battery packs has become a key focus for both consumers and manufacturers. In new energy vehicles, battery packs are not only the core of the powertrain but also crucial to safety. To enhance the safety performance of battery packs, manufacturers are constantly exploring innovative materials and technologies, with ceramic fibre blankets proving particularly popular due to their excellent fire-resistant properties. Today, Mu Yi will delve into the application of ceramic fibre blankets in new energy vehicle battery packs and explore how they establish a robust safety barrier against fire.
Ceramic Fibre Blankets: A Leader Among Fire-Resistant Materials
Ceramic fibre blankets are high-temperature-resistant, fire-resistant materials made from ceramic fibres. Thanks to their excellent thermal insulation properties, high-temperature resistance and chemical stability, they are widely used across numerous industrial sectors. In new energy vehicle battery packs, ceramic fibre blankets primarily serve as a fire-resistant and thermal insulation layer, providing reliable safety protection for the battery pack.
Fire Protection and Thermal Insulation: The Core Function of Ceramic Fibre Blankets
High-Efficiency Thermal Insulation: Ceramic fibre blankets have a low thermal conductivity coefficient, enabling them to effectively block the transfer of heat. During the operation of the battery pack, they prevent the high temperatures generated inside the cells from spreading to the exterior, thereby preventing fires caused by overheating.
Fire Resistance and Flame Retardancy: Ceramic fibre blankets are inherently flame-resistant and non-combustible.

Even in the event of thermal runaway within the battery pack or ignition from an external fire source, they can effectively prevent the spread of flames, providing valuable escape time for passengers and the vehicle.
Chemical Stability: Ceramic fibre blankets exhibit excellent resistance to chemicals such as the electrolyte found inside battery packs, and their fireproof and thermal insulation properties are not compromised by chemical reactions.
Applications of Ceramic Fibre Blankets in New Energy Vehicle Battery Packs
In new energy vehicle battery packs, ceramic fibre blankets are typically installed in critical locations such as between battery modules and on the inner surfaces of the battery pack casing. These areas are prone to battery pack fires and are key points for fire protection and thermal insulation. Installing ceramic fibre blankets in these locations can effectively enhance the safety performance of the battery pack.
For example, installing ceramic fibre blankets between battery modules can prevent heat generated by thermal runaway in a single module from transferring to other modules, thereby preventing the spread of fire. Installing ceramic fibre blankets on the inner surface of the battery pack casing provides a robust fire barrier for the battery pack in the event of ignition by an external fire source.
Case Study: Successful Application of Ceramic Fibre Blankets in New Energy Vehicles
Taking a well-known brand of new energy vehicle as an example, this model utilises ceramic fibre blankets as a fire-resistant and thermal insulation layer in its battery pack design. Following rigorous testing and validation, the battery pack was able to maintain stable performance under extreme conditions—such as extreme high temperatures and ignition by external fire sources—without any safety incidents such as fires occurring. This successful case study fully demonstrates the vital role of ceramic fibre blankets in new energy vehicle battery packs.
Development Trends for Ceramic Fibre Blankets in the New Energy Vehicle Sector
With the continuous expansion of the new energy vehicle market and ongoing technological advancements, the prospects for the application of ceramic fibre blankets in this sector are set to become even broader. In the future, as materials science advances further and manufacturing processes continue to innovate, the performance of ceramic fibre blankets will improve significantly whilst costs are further reduced. This will enable their adoption in a wider range of new energy vehicle models, providing a more robust guarantee of safety for these vehicles.
At the same time, as the demands for lightweight construction and high efficiency in new energy vehicles continue to rise, ceramic fibre blankets will be combined with other new materials to jointly drive the continuous innovation and development of new energy vehicle battery pack technology.