Talk about those moths that exploded lithium batteries

The lithium battery exploded, who did it? Like I said last week, I removed a lot of batteries, good ones and bad ones. I don’t know whether the batteries are good or bad because of work. In various situations, it is very common for lithium batteries to catch fire due to operational errors (do not disassemble them without any protection, and do not disassemble them in high temperature and humid environments). No matter what, let's talk about the explosion of lithium batteries. First of all, you have to be clear about some theoretical things. If you are not interested, you can skip them. Lithium batteries, I think we should be more strict, should be called lithium-ion secondary batteries. Li is the smallest diameter of the periodic table and the most active metal. Please quietly look at the middle school memory hydrogen, helium, lithium, beryllium, and boron carbon nitrogen. Oxyfluoride neon lights. Because of these characteristics, he is widely favored by intelligent scientists and engineers. However, this is also a double-edged sword. When metallic lithium is exposed to the air, it will undergo violent oxidation reaction and explosion with oxygen in the air. This is also a problem with lithium salts at this stage. So every day in electrode materials, we usually use alloy materials and graphite to store lithium atoms. The material is like a small storage grid, where lithium atoms lie, and the larger periodic table of molecules (beginning), don't go, they won't happen , Prevent explosion, so as to achieve the purpose of safety. As I mentioned in the previous article, lithium batteries are effective. I won't go into details here. When a lithium battery is charged, lithium atoms lose electrons and oxidize to lithium ions. Lithium ions pass through the electrolyte to the cathode, where they enter the laminar flow structure of the anode, gain an electron, and are reduced to lithium atoms. When unloading, the whole process is reversed. (This is the source of the rocker battery) In order to prevent the battery from being short-circuited through the direct contact between the positive electrode and the negative electrode, a separator with many small holes is added to the battery to prevent short-circuit. A good membrane can also automatically close small holes when the battery temperature is too high, so that lithium ions cannot pass through, thus wasting effort and preventing danger. Common causes of explosion 1. There are serious quality problems in raw materials and incoming materials, and the most important thing is the quality of electrolyte; 2. The pole piece absorbs water and reacts with the electrolyte to produce a large amount of gas and heat; 3. The amount of liquid injection is small, and the charge and discharge are internal Large resistance, affecting lithium ion transmission; 4. Cover plate welding, poor sealing technology, poor sealing performance, air leakage, and external water vapor ingress; 5. Internal micro short circuit, mainly due to dust burrs, mainly from cutting materials and tool burrs; statement: this Some pictures and contents of articles published on the site are from the Internet. If there is any infringement, please contact to delete the previous article: Is the larger the battery capacity the better?