Analysis of lithium battery fire extinguishing and lithium battery fire precautions

Lithium batteries, containing lithium batteries, have the advantages of high cost performance, light weight, and environmental protection, but because of the large amount of energy they store, they also have a higher risk of fire and explosion. Whether it is a large battery for the energy storage industry, a battery for electric new energy, or a smaller battery for electronic equipment, there are certain risks. No matter when, the energy stored in the first space has a tendency to release, and sometimes it is violent. Therefore, reasonable fire protection and lithium battery life-saving methods should be considered during the entire battery life cycle. This multiple profession has brought new challenges, including battery manufacturing, transportation logistics, warehousing management and battery use. For colleagues engaged in risk control and firefighting professions, how to quantify this risk and how to effectively protect against it has become a new challenge. Lithium batteries and lithium batteries are called similarly, but their practices are different. Lithium batteries cannot be recharged. They contain lithium metal substances, which are highly flammable. Lithium batteries are generally used in military fields, medical fields and some electronic and electrical equipment. DoorFanTest, air tightness test, FM fire pump, CE certified fire protection. Lithium battery is rechargeable. It is lighter than lithium batteries, while providing high energy storage density. Lithium batteries do not contain metal lithium, but they contain lithium ions and a highly flammable electrolyte (liquid). Application areas include laptop computers, mobile phones, electric new energy cars, medical equipment, and energy storage systems. With the rapid increase in the use of lithium (ion) batteries, the risk of fire is also permeating its entire life cycle. From production, logistics, warehousing, to end users, everyone should be more aware that while this excellent thing supplies energy, it also brings fire risks. Every link in the battery supply chain should have a responsible method to ensure safety. Fire characteristics of lithium batteries Lithium batteries can ignite spontaneously, and then explode due to overheating. The causes of overheating include electrical short-circuit, rapid discharge, overcharging, manufacturing defects, poor design or mechanical damage, and so on. Overheating will lead to the onset of thermal runaway processes, that is, the exothermic reaction inside the battery will cause the internal temperature and pressure of the battery to rise at a rapid rate, and then waste energy. Once a battery cell enters a thermal runaway condition, it will generate enough heat to make adjacent battery cells enter a thermal runaway condition. As each battery cell ruptures and releases its contents in turns, a flame of repeated burning occurs. This causes the flammable electrolyte in the battery to leak. If a disposable lithium battery is used, it will also release the incinerable lithium metal. Therefore, a huge problem will arise. These fires cannot be treated like normal fires. Targeted training, prevention and control planning, reasonable storage and establishment of a lithium battery rescue system must be carried out. There are currently limited data on the fire characteristics of large batteries. However, we can speculate that when the battery enters a thermal runaway, the thermal runaway propagation will produce identifiable symbols; the battery will also exhibit corresponding characteristics in some way. The fire may gradually burn out or explode. These two types of incidents, as well as their negative by-products (sprayed shrapnel, molten metal, incineration of electrolytes and other substances, etc.) can be managed and controlled by setting appropriate storage methods and transportation environments for the battery. The system using lithium (ion) batteries may need to continue to use and develop some suppression and lithium battery life-saving systems to reduce the probability of negative incidents, and then control the risks, so that the battery system can make users feel at ease. Lithium (ion) battery fire incidents occur from time to time around the world. These fires occurred in energy storage systems (wind, solar, etc.), battery testing environments, transportation and storage, and many other areas. Spontaneous battery pack fires have occurred in many electric vehicles, many of which have caught fire or exploded. Although in cars, fire research and emergency response professions, many people believe that the fire risk of lithium battery-powered vehicles is not greater than that of conventional vehicle systems, but it is widely recognized that the by-products caused by lithium battery fires, such as heat and flames, will occur. Great risk. These risks include the release of toxic substances and volatile incineration characteristics. In other words, related to conventional fires, although lithium battery fires may not have more risks, they are different from conventional fires and share common risks. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Analysis of battery model