Why pay attention to fire protection for lithium batteries?

Lithium batteries have the advantages of light weight and low temperature resistance (-40°C). The 0.3mm thick and stamp-sized lithium batteries can continue to be used for more than 5 years. In recent years, the current alkaline dry batteries and manganese batteries are being phased out. Many home appliances and mobile phones. Lithium batteries are different from the zinc chloride and potassium hydroxide water-soluble electrolytes of current manganese batteries and alkaline dry batteries. They use organic solvents. The positive electrode of lithium battery uses materials such as manganese dioxide, lead fluoride, and sulfurous chloride. Compared with the zinc chloride used in the negative electrode of general batteries, the lithium metal foil used in the negative electrode has a strong ionization tendency and a large difference in voltage between the positive and negative electrodes, which improves the working efficiency of the lithium battery. However, power lithium-ion batteries often generate heat and combustion during use. The lighter ones will affect the use of the host, and the more serious ones will burn the host and cause a fire. According to reports, there have been many domestic fire accidents caused by heat and burning of lithium batteries in Japan in recent years. So why do lithium batteries generate heat and burn? When many materials in lithium batteries come into contact with water, they can undergo violent chemical reactions and release a large amount of heat energy to cause heating and burning. The manganese dioxide in the positive electrode of a lithium battery can generate heat with only a small drop of water. After the sulfur chloride in the lithium battery comes into contact with water, it generates hydrochloric acid and sulfur dioxide while releasing heat energy. Several factors make lithium batteries a kind of fire in life. Therefore, people must pay attention to waterproof and moisture-proof when using lithium batteries. After the various hosts are out of service, the lithium batteries should be removed and stored in a dry, low-temperature place for safekeeping to guard against household fire accidents caused by improper use of lithium batteries. How to buy lithium batteries 1. Is there a clear capacity label? Batteries without a clearly marked capacity (such as 1000mAh or 1000 mAh) are likely to use inferior batteries or recycled batteries. Many cheap lithium batteries on the market are made from recycled batteries. Although they are cheap, they have short lifespan and unstable quality. Careless use may damage the phone. What are the tips for purchasing lithium batteries? 2. Is there any guarantee of standby time? Standby time refers to the continued use time after the battery is installed in the phone to the next charge. Generally, the batteries sold in the market cannot guarantee the standby time for customers. This is because the quality of the power lithium-ion battery is unstable, so the standby time is very short. 3. Is it to install a safety protection circuit board? Without the protection circuit board, there is a danger of deformation, leakage, and leakage of the lithium battery. Under the vicious price cut competition, various companies seek low-cost protection circuit boards, or omit this device at all, making the market full of dangerous lithium batteries. Consumers cannot tell from the appearance whether there is a protective circuit board, so they choose a reputable merchant to buy it. 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 the influencing factors of lithium battery life