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Will polymer lithium batteries be incinerated or exploded in high temperature environments?

by:Vglory      2021-05-14
The polymer lithium battery will not burst in high temperature environment; the working temperature of the lithium battery is -20°C~+50°C. Low temperature will affect the function of the lithium battery, the capacity will be lower and the internal resistance will increase; the temperature is normal, and it can be recovered. The soft-packed polymer lithium battery has many distinct advantages, such as high energy density, smaller size, ultra-thinness, light weight, and high safety. It is a new type of battery. In terms of shape, lithium polymer batteries have the characteristics of ultra-thin, and can be made into batteries of any shape and capacity to meet the needs of various products. The minimum thickness that this type of battery can reach can reach 0.5mm, and there is no memory effect. The soft-packed polymer lithium battery is a kind of lithium battery product made of flexible packaging and polymer electrolyte. It will not explode in normal use and storage, unless it is short-circuited by man-made strong damage. At that time, most of the polymer lithium batteries were soft pack batteries, and aluminum plastic film was used as the outer shell. When the organic electrolyte was used inside, it would not burst even if the liquid was hot, because the aluminum plastic film polymer battery used solid or colloidal without leakage. , It's just a natural break. But nothing is certain. If the instantaneous current is large enough and a short circuit occurs, it is not impossible for the battery to spontaneously ignite or burst. The occurrence of security incidents in mobile phones and tablet computers is mostly caused by this situation. In order to reduce the occurrence of blasting incidents, polymer lithium batteries are being used in more and more occasions. Although the replacement of other types of batteries by lithium batteries is still in progress, among the types of lithium batteries, polymer lithium batteries have begun to replace in some areas. General lithium battery. The study found that the lithium battery is in a sub-stable state after storing electric energy, and excessively high temperature will cause the lithium battery to generate heat out of control. Lithium batteries will generate a lot of heat energy during charging and discharging, especially when charging. If the heat is not discharged in time and accumulates inside the battery, the temperature will continue to rise. When the critical point is reached, the metastable battery positive and negative data will react violently with the electrolyte, rapidly generating a large amount of heat energy, and causing thermal runaway. A large amount of electrolyte will vaporize and destroy the battery case under high temperature applications, and will burn or even explode after being in contact with air. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Analysis of the primary method to solve the thermal runaway of power lithium battery
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