Why is foaming silica gel strip the best choice for new energy lithium battery? According to the data of China Automobile Association, in 2018, there were 1275000 vehicles in China, and more than 5 million in the world, accounting for nearly half of the country, which has been developing so rapidly in just a few years. The safety and practicability of the vehicle, especially the new energy lithium battery, has been concerned by users, and the lithium battery is a thermal management system. The foam silica gel strip under the system is an important gate.
Lithium battery thermal management system is the key target of new energy vehicles, also known as nev. Once the door of the thermal management system is improperly treated, not only the vehicle cannot land, but also the life and stability of the lithium battery are affected. The worst result is that the lithium battery can not effectively conduct heat through the foam silicone strip, which causes serious damage to the lithium battery and vehicle fire The result is that when the vehicle is parked in the sun, the direct temperature can reach 40-100 ° (it can be imagined that an egg can be fried by knocking on the car cover).
At this time, if there is no effective thermal evacuation of foam silica gel strip, the life of lithium battery will be seriously affected. In the assembly process of lithium battery, foam silica gel strip is one of the last processes. Its function is not only heat conduction, but also fire-retardant and sealing effect. Lithium battery is easy to ignite under high temperature and time, and foam silica gel strip can effectively control the fire in the lithium battery without diffusion Strive for an effective treatment time. After the internal factors are treated, the foaming silica gel strip should also block the external factors and play a role of sealing to avoid the influence of water and impurities on the operation of lithium battery.
The sealing performance of foam silicone strip is better than that of conventional silicone strip. Therefore, most lithium battery manufacturers use flame-retardant foam silicone strip. The reason why they use foam silicone strip is that there is no dead angle at all when it is sealed (similar to sponge in constitution, where there is a gap, it will be squeezed). The sealing performance will be improved a lot. The second is the conduction of heat management system The heat of lithium battery is determined by the size of contact surface, which is the reason why a piece of heat-conducting silicon film or heat-conducting silicone grease is needed inside the lithium battery, and the deformation of the foam silicone strip under pressure increases, which results in the more extensive heat conduction of the contact surface, which is why the first choice of the thermal management system of lithium battery is the foam silicone strip That's why.
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