Case of Thermal Protection for Energy Storage Containers: Nanoporous Thermal Insulation Materials Safeguard the Safety of Lithium Energy Storage

Under the promotion of the "dual carbon" goal, the electrochemical energy storage industry has entered a period of rapid growth. Containerized energy storage systems, due to their flexible deployment and strong scalability, are widely used in scenarios such as power grid peak shaving, new energy matching, and industrial and commercial energy storage. At the same time, frequent energy storage fire accidents caused by thermal runaway of lithium batteries have made thermal safety protection a top priority in the design and operation of energy storage systems. In response to the high temperature fire and insulation requirements in compact spaces of energy storage containers, nano porous insulation materials with nano silica as the core material have excellent performance to build a comprehensive thermal safety barrier for energy storage containers.

Silicon dioxide based nanoporous insulation material

This scheme adopts nanoporous insulation material with high-purity nanoporous silicon dioxide as the core material, and uses nanoporous structure to achieve all-round barrier of heat conduction, convection, and radiation, providing graded customized thermal protection for energy storage containers:

· Module level protection: Place insulation pads between battery PACKs and cell clusters to form a single thermal runaway barrier layer, block lateral heat transfer, minimize faults, and avoid chain thermal runaway;

Cabin level protection: Insulation panels are laid on the inner walls, ceilings, and floors of the container to construct an overall insulation layer for the cabin. This not only isolates the impact of external temperature fluctuations on the battery's working state, but also blocks the transmission of high temperatures to the outside in the event of a fire, reducing secondary risks.

· Zone level protection: In conjunction with the design of fire compartments in the cabin, as the core material of fire partitions, it delays the spread of fires across areas and reserves sufficient time for fire response and emergency response.