Electric vehicles (EVs) are becoming more popular as they offer a more sustainable and efficient way of transportation. However, EVs also face some challenges, such as the safety and performance of their battery packs. One of the main risks associated with lithium-ion batteries is thermal runaway, which is a chain reaction of overheating and fire that can spread from one cell to another and cause catastrophic damage.
In this blog post, we will show you how you can prevent thermal runaway and protect your battery pack from fire with aerogel felt, a flexible and porous blanket made of silica aerogel particles.
What is thermal runaway and why is it dangerous?
Thermal runaway is a phenomenon that occurs when a lithium-ion battery cell experiences an internal short circuit or external damage that causes its temperature to rise rapidly. This can trigger a positive feedback loop that leads to further heating and gas generation within the cell. The gas pressure can cause the cell to rupture or vent, releasing flammable electrolyte and sparks that can ignite nearby cells or materials. This can result in a domino effect that spreads the fire throughout the battery pack and beyond.
Thermal runaway can pose a serious threat to the safety of EV drivers, passengers, and bystanders. It can also damage the vehicle and the surrounding environment. According to a report by the U.S. Department of Energy (DOE), there were 64 reported incidents of thermal runaway in EVs in the U.S. between 2011 and 2019, resulting in 23 injuries and two fatalities.
What is aerogel felt and how does it work?
Aerogel felt is a type of thermal barrier that can prevent or delay thermal runaway propagation in EV battery packs. It is made of silica aerogel particles that are bonded together by ceramic fibers to form a flexible and porous blanket. Aerogel felt has several advantages over conventional materials, such as:
• Low thermal conductivity: Aerogel felt has extremely low thermal conductivity, which means it can effectively block heat transfer and prevent thermal runaway propagation. Aerogel felt can also withstand high temperatures without losing its insulation performance.
• Ultra-thin forms: Aerogel felt can be manufactured into thin and lightweight products that can fit into tight spaces and reduce the overall weight of the battery pack. Aerogel felt can also accommodate different cell shapes and sizes, such as pouch or prismatic cells.
• Compression response: Aerogel felt can provide both thermal protection and mechanical support to the cells. Aerogel felt can also adapt to cell breathing and swelling during the battery lifecycle without compromising its thermal resistance.
How to use aerogel felt in different types of thermal barriers?
Aerogel felt can be used in different types of thermal barriers, such as blankets, pads, sheets, films, foams, and coatings. Depending on the application, aerogel felt can be customized to meet specific thermal, mechanical, and thickness requirements.
For example, aerogel felt blankets can be used as cell-to-cell barriers that isolate and insulate each cell from its neighbors. Aerogel felt pads can be used as module or pack barriers that separate and protect the modules or packs from each other or from the external environment. Aerogel felt sheets can be used as top or bottom plates that cover the entire battery pack. Aerogel felt films can be used as coatings that wrap around each cell or module.
Where can you buy aerogel felt products?
One of the leading manufacturers and suppliers of aerogel felt products is Fuzhou Fuqiang Precision Co., Ltd., which specializes in new energy vehicles EV battery thermal runaway ceramic fiber aerogel felt. Their products have been tested and certified by authoritative institutions and have been widely used in various EV models.
If you are interested in learning more about their aerogel felt products and how they can improve the safety and performance of your EV battery pack, please visit their website or contact them directly.
Conclusion
As you can see, aerogel felt is a smart solution for thermal runaway prevention in EV battery packs. It can provide both thermal protection and mechanical support to the cells, while being thin and lightweight. It can also be customized to fit different cell shapes and sizes, as well as different types of thermal barriers.
If you are looking for a reliable and cost-effective way to protect your EV battery pack from thermal runaway and fire, you should consider using aerogel felt products from Fuzhou Fuqiang Precision Co., Ltd. They have a proven track record of delivering high-quality products that meet your needs and expectations.
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