Why does the lithium battery explode or burn?

Why does the power lithium battery explode or burn? The most important thing for everyone now is to worry about the burning and explosion of lithium batteries. Isn't the power lithium battery claimed to be highly safe? Why are there frequent explosions? In addition to the dangers caused by fake and inferior products, most of the lithium batteries are explosions caused by improper operation during use. When using lithium batteries, you must strictly follow the usage specifications to prevent accidents. Why do lithium batteries explode or burn? Why does the lithium battery explode or burn? Combustion or explosion usually occurs because heat is accumulated and cannot be diffused, and it accumulates to the point of fire, or if heat accumulates to a certain extent in a certain space, it will happen. As a battery, in the final analysis, the above-mentioned situation usually does not have the following four reasons. 1. Internal short circuit (mostly soft package large monomer): structure or process defects lead to the insertion of the tabs, the surplus of the diaphragm is too small, burrs, and the diaphragm is discounted. Interpolation of tabs often occurs in thick batteries and internal parallel structures. Insulation of tabs is not in place. Adding a protective plate to the subsequent product or using the process can easily cause an internal acute short circuit and cause combustion or explosion. Less, unless external factors. 2. External short circuit: The explosion after burning caused by the external short circuit of the lithium battery below 1AH is rare. It is usually caused by bulging or simply burning the tabs. The personal analysis is the external short circuit of the power lithium ion battery or the large-capacity mobile phone battery. Resulted burning. This involves customers improperly installing the metal outer box without considering the insulation of the tabs. At the installation site, the battery smokes and burns abnormally; the power lithium-ion battery also has insufficient structural fixing measures, and the battery pack shakes during the user’s use. The insulation protection film is damaged or the connecting wire skin is damaged, which will eventually cause a short circuit and burn. 3. Overcharge explosion: This is the most dangerous and the one that the company fears most, but it still happens occasionally. From what we know, there are two points: a. The user does not use the matching charger as required, thereby destroying the protection circuit and the user often charges for an unlimited time. In this case, it is difficult to not explode; b. If it is unreasonable and the protection board fails, it will be a mess in this case. The same applies to single-cell batteries. 4. The material of the lithium battery itself is not good enough. If the material is not good enough, it may overheat under the calibrated voltage and current, which may cause an accident. 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 article: How is the lithium battery assembled?