What standards need to be met for customized special low-temperature lithium batteries

　　1. One of the prerequisites for special low-temperature batteries is that the larger the capacity and lighter the weight, the better

　　At present, there are many kinds of low-temperature batteries, each of which has various advantages and disadvantages. The only batteries that can meet the requirements are polymer lithium ion batteries, Lithium iron phosphate ion batteries and ternary lithium cobalt oxide batteries. Among the three kinds of low temperature lithium ion batteries, polymer lithium ion batteries have the highest energy density and lightest weight, followed by ternary cobalt acid lithium ion batteries, and finally Lithium iron phosphate ion batteries.

　　2. Low temperature lithium-ion batteries used in the military must meet certain testing standards

　　The Factor of safety of the battery is a key factor that must be taken into account in the machinery and equipment of civil, special or special industries. The specifications for the Factor of safety of rechargeable batteries are different only for different purposes or application sites. Special low-temperature lithium-ion batteries have high requirements for Factor of safety. First, rechargeable batteries must undergo gunshot tests, and the batteries will not explode or ignite. Second, in the case of high-intensity collisions and collisions, batteries must ensure safety without causing casualties.

　　3. The specifications for special low-temperature lithium-ion batteries should meet certain charging regulations at a certain temperature

　　Due to the significant harm of low-temperature natural environment to battery performance, charging rechargeable batteries in low-temperature natural environment is a relatively difficult technical task. Special low-temperature lithium batteries are generally charged in outdoor rooms, and the working temperature is common; At around 20 ℃, it is necessary to consider this basic standard for special low-temperature batteries. Especially when charging in the open air, it should be considered to charge the battery at around -40 degrees Celsius.

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