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Due to the large total voltage and working current needed in the power sector, thousands of single lithium-ion battery packs are often used in groups. The safety of batteries is a growing concern. The safety problem hasn’t been fully resolved as far as battery material technology goes. Heat insulation, flame retardant, and fire protection are all effective methods to reduce harm caused by lithium-ion battery thermal runaway.
Aerogel has a very low thermal conductivity
Researchers have tested the thermal insulation effect of heat insulation boards between single cells. The thermal runaway experiment was used to test the aerogel separator. A 6Ah battery module was placed in a module of 20mm with four insulation materials of 200mm and added a board of 1cm thickness between two monomers. The thermal runaway effect on the single cell compartment.
The results from the experiments show that when monomer A becomes thermally out-of-control, monomer in the blank groups without thermal protection quickly heats and becomes thermally out-of control. In contrast, experimental monomer with an aerogel between the monomers reaches only 110°C. It successfully blocks the thermal spread of a 6Ah battery cell at 20mm.
Due to its excellent properties of heat insulation and flame retardance, aerogel is able to further reduce the safe distance between monomers. Aerogel companies have created a range of ultra-thin aerogel sheets, insulation paper, and other products that are designed to maximize the power of battery packs and reduce space.
Aerogel will be used more widely in battery applications as my country develops its aerogel industry. This will include the latest military thermal batteries and more civilian battery uses, including new energy power, thermal insulation, and flame retardant protection of lithium-ion and accumulator batteries in electronic equipment.
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