Why does the lithium battery explode?

Why does the lithium battery explode? ⒈ Too high water content, the water can react with the electrolyte in the lithium battery, process gas, and when charging, it can react with the generated lithium to generate lithium oxide, which causes the capacity of the battery to be lost, and it is easy to use The cell is overcharged to generate gas. The decomposition voltage of water is low, and it is easy to decompose to generate gas during charging. When this series of generated gas will increase the internal pressure of the cell, when the shell of the cell cannot withstand it, The lithium battery will explode. ⒉Internal short circuit Due to the internal short circuit phenomenon, the battery core discharges with a large current, and a large amount of heat occurs, which burns the diaphragm, and causes a greater short circuit phenomenon. In this way, the battery core will have a high temperature, causing the electrolyte to decompose into gas, causing internal pressure. If it is too large, when the shell of the battery cell cannot withstand this pressure, the battery cell will explode. ⒊When the overcharged core is overcharged, the excessive release of lithium in the positive electrode will change the structure of the positive electrode. If too much lithium is released, it is easy to be unable to insert into the negative electrode, and it is also easy to cause lithium deposition on the surface of the negative electrode. Moreover, when the voltage reaches 4.5V or more At this time, the electrolyte will decompose and process a large amount of gas. All of the above may cause an explosion. ⒋External short-circuit The external short-circuit may be caused by improper operation or misuse. Due to the external short-circuit, the battery discharge current is very large, which will cause the battery core to heat up, and the high temperature will cause the diaphragm inside the battery cell to shrink or completely break, causing the lithium battery An internal short circuit caused an explosion. 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 article: What are the application advantages of vanadium batteries?