Why do lithium-ion batteries generate heat and burn?

Lithium-ion battery fireproof lithium-ion battery has the advantages of light weight, high efficiency, low resistance temperature (-40°C), 0.3mm thick, stamp-sized lithium-ion battery can be used for more than 5 years, in recent years, alkaline dry batteries and manganese have been gradually eliminated Batteries are widely used in many high-end home appliances and mobile phones. Unlike water-soluble electrolytes such as zinc chloride and potassium hydroxide used in current manganese batteries and alkaline dry batteries, lithium-ion batteries use organic solvents. The positive electrode of lithium ion battery is made of manganese dioxide, lead fluoride, sulfite chloride and other materials. Compared with the zinc chloride used in the positive electrode of a general battery, the lithium foil used in the positive electrode has a strong ionization tendency, and the voltage difference between the positive electrode and the negative electrode is large, which improves the working efficiency of the lithium ion battery. However, heating and burning often occur in the process of using lithium-ion batteries, which will affect the use of the host in the lighter, and cause the host to catch fire. According to reports, in recent years, there have been some domestic fires caused by the burning of lithium-ion batteries. So why do lithium-ion batteries generate heat and burn? When many materials of lithium-ion batteries come into contact with water, they will undergo violent chemical reactions and release large amounts of heat energy, leading to heat generation and combustion. Manganese dioxide is the positive electrode of lithium-ion batteries, and it only needs a drop of water to heat up. After the lithium ion battery is in contact with water, when hydrochloric acid and sulfur dioxide release heat from sulfite chloride, several factors make the lithium ion battery a fire in life, so people must pay attention to waterproof and moisture proof when using lithium ion batteries. When the host is out of service, the lithium-ion battery should be taken out and stored in a dry, low-temperature place for safekeeping to prevent and prevent household fire accidents caused by improper use of lithium-ion batteries. Analysis of the hazard of battery heat If the battery is sealed (Nokia is not sealed, it directly enters the battery), the battery will cause the internal air to swell violently, causing the battery to protrude, and severely cause the battery to explode. C. Long-term heating of the cell phone battery will accelerate the aging process of the cell phone itself and shorten its life. The above is the hazard of long-term heating of mobile phone batteries. Solution: 1. If your mobile phone battery is swollen, there are ways to solve it. Just use your finger to find the gap in the battery (the back of the mobile phone battery is close to the charging electrode of the mobile phone, which is a little soft when pressed down), and then poke a small hole with your finger to let the air out. 2. Buy another battery. 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 post: What impact will the battery type have on the use of electric vehicles?