The Solution For New Energy Battery Pack - Fireproof Insulation And Sealing Buffer Material

New energy batteries, especially lithium batteries used in electric vehicles, have extremely high safety requirements to prevent overheating, short circuits, and even fires. In order to enhance the safety of battery packs, fire-resistant and heat-insulating materials, as well as sealing and cushioning materials, have become essential components. The following outlines some common solutions for fire-resistant, heat-insulating, sealing, and cushioning materials, and discusses their applications in new energy batteries.

Fire-resistant and Heat-insulating Material Solutions

1. Ceramic fiber materials: These materials are resistant to high temperatures and have good heat insulation effects, and are widely used in battery insulation layers to effectively prevent or slow down the spread of fire.

2. Aerogel: Aerogels have excellent heat-insulating properties and are lightweight, not only preventing the spread of heat but also reducing the overall weight of battery packs.

3. Expandable graphite: At high temperatures, expandable graphite can rapidly expand to form a heat-insulating layer, providing thermal protection for batteries.

4. High-temperature flame-retardant tape: Used for insulation and heat insulation between battery modules, it is simple and easy to use.

Sealing and Cushioning Material Solutions

1. Silicone gel: Silicone gel has good sealing properties, preventing electrolyte leakage, and its softness allows it to act as a cushioning material to absorb impacts.

2. Foam materials: Foam materials are not only waterproof and dustproof, but also have a certain cushioning ability, providing flexible support between battery packs.

3. PVC/PU foam: These foam materials can be cut and shaped as needed for sealing and impact absorption in battery packs.

4. Double-sided tape and sealing strips: Provide sealing and bonding at multiple connection points of the battery pack and are easy to assemble.

Application Examples

- Battery module insulation: Insulation materials are used to isolate between battery modules to prevent overheating of one cell from affecting surrounding cells, providing thermal management.

- Battery pack casing insulation: Insulating materials are used around the battery casing to ensure that external temperature changes do not directly affect battery performance and lifespan.

- Battery Management System (BMS) protection: Applying insulation materials near critical electronic components, such as BMS, to protect these components from high temperatures.

- Battery cell cushioning: Using cushioning materials around individual battery cells to reduce physical impact or vibration damage.

Conclusion

New energy batteries, especially those in the electric vehicle industry, are receiving increasing attention in terms of battery safety. By applying appropriate fire-resistant, heat-insulating, sealing, and cushioning materials, not only can the safety of the battery pack be effectively enhanced, but the battery's operational efficiency can also be improved, and its service life extended. With the development of materials science, there may be more new types of materials applied to battery packs in the future to meet higher safety standards and performance requirements.