Thermal Insulation and Cell Protection in Electric Vehicle Battery Packs

As electric vehicles (EVs) become more popular, the performance and safety of their batteries are increasingly important. One key aspect is the thermal management of the battery pack, which can prevent overheating and potential fires. In this post, we'll discuss some materials and features used for thermal insulation and cell protection in EV battery packs.

First, let's look at two materials suitable for different types of battery cells: MPP10 and Aerogel. MPP10 is ideal for low-energy-density cells, while Aerogel is better suited for high-energy-density cells. MPP10 is primarily used for thermal insulation, which helps to prevent a cell's high temperature from affecting neighbouring cells. Additionally, it can protect the cells if the battery bulges. While MPP10 is flame-resistant, this isn't its primary feature. Flame-resistant materials like Aerogel, ceramic composite tape, and mica sheet are more appropriate for battery bonding, the top of the mold, and the sides and bottom of the pack. These materials can withstand high temperatures, giving people enough time to escape in case of a battery fire.

Another important aspect of battery pack safety is the sealing gasket. Silicone foam gaskets are commonly used in EV battery packs because they can withstand long-term compression with less than 5% deformation. This means the gasket maintains its seal over time, reducing the risk of leaks.

When it comes to protecting the battery mold wire, PC blister is often used because it is fire-resistant and has a long lifespan. Meanwhile, FPU and RPU products are commonly used to protect the sides and bottom of the battery pack.

Overall, the thermal insulation and cell protection features of EV battery packs are crucial to ensure their safety and performance. By using materials like MPP10, Aerogel, flame-resistant materials, and silicone foam gaskets, along with protective products like PC blister, FPU, and RPU, manufacturers can create battery packs that are both efficient and safe.

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