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Some knowledge points of aerogel heat insulation film
Release time:
2024-06-25
Aerogel heat insulation sheet manufacturers believe that the important power of new energy vehicles comes from the power lithium battery system, which determines the driving performance, safety performance and life of new energy vehicles.
Aerogel heat insulation sheet manufacturers believe that the important power of new energy vehicles comes from the power lithium battery system, which determines the driving performance, safety performance and life of new energy vehicles. Power lithium battery system is generally composed of battery module, battery management system BMS, thermal management system and some electrical and mechanical systems. The power lithium battery module consists of several to hundreds of parallel and series battery cells.
Aerogel heat insulation sheet manufacturers believe that under different driving conditions and environments of vehicles, due to their own resistance, a single battery cell will generate a certain amount of heat while outputting electrical energy, making its own temperature higher. High temperatures and intense collisions are the main culprits that destroy lithium-ion batteries and cause them to burn and explode. However, the power battery system will generate a lot of heat in the narrow battery box during operation. If the heat cannot be quickly dissipated in time, the life and performance of the battery module will be greatly affected, and even the heat will be out of control, resulting in fire and explosion.
Aerogel insulation sheet manufacturers believe that the main role of fire insulation materials is to delay or prevent the spread of heat and flame, leaving enough time for passengers to leave the scene of the accident. Generally, in a battery factory or a mainframe factory, a fireproof and heat insulating material is used between the battery and the upper cover of the module and the battery pack. At present, the commonly used power battery insulation materials are foam, plastic foam, ultra-fine glass wool, high silicon cotton, vacuum insulation board, etc. But only aerogel can last 300 seconds.
Aerogel heat insulation sheet manufacturers believe that silica aerogel is a porous solid material with gas as the dispersion medium, which is a lighter solid material used in engineering. Aerogel has low thermal conductivity, good heat insulation effect and non-combustible. Compared with traditional insulation materials, only 1/5-1/3 thickness can achieve the same insulation effect, saving more space for the power battery, and the insulation effect and temperature are more stable.
Characteristics of aerogel insulation sheet;
1. Fire resistance. Excellent fire performance, to ensure the best working temperature of lithium-ion batteries, at the same time in the event of an accidental fire, to provide valuable time for the safe evacuation of personnel;
2. Low thermal conductivity. Low thermal conductivity, good thermal insulation performance, thin insulation layer thickness, effectively improve the space utilization of the battery pack;
3. Long service life. Good waterproof performance and longer service life;
4. Safety and environmental protection. Non-toxic and harmless, no pollution to the environment.
The development of new energy vehicles is the only way for China to move from a big automobile country to a powerful automobile country. It is a strategic measure to deal with climate change and promote green development, and an effective measure to achieve "carbon neutrality. The application of aerogel heat insulation sheet in new energy vehicles can better realize the temperature control, electronic control management and performance improvement of the battery, play the role of heat insulation and fire prevention, and win more escape from the scene and fire extinguishing for users and passengers Time. It is a thinner and more efficient insulation material for new energy vehicles and power lithium batteries.
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