What are the factors related to the flatulence of polymer soft-pack lithium batteries?

The flatulence bulge of the polymer soft-packed lithium battery is related to many factors such as the quality of the lithium battery, the usage method, and the environment. 1. Poor packaging: air moisture enters the cell during the production process, causing the electrolyte to decompose and produce gas. 2. Excessive water content in the battery cell: In the process, once the water content exceeds the standard, the electrolyte will fail and cause gas. 3. Corrosion: The polymer soft-packed lithium battery core is corroded, the aluminum layer is consumed by the reaction, and it loses its barrier to water and causes flatulence. 4. Surface damage: damaged by external force, piercing causes moisture to enter the inside of the cell. In addition, the chemical properties of lithium materials are too active, which brings extremely high risks. When exposed to the air, lithium metal will undergo a violent oxidation reaction with oxygen. 5. Knocking: Aluminum material is easy to deform, and it will be easily knocked. The larger the battery cell and the larger the air bag, the easier it is to damage. 6. Short circuit: The contact between the positive and negative electrodes causes a short circuit, and the polymer lithium battery cell generates gas or even smoke. 7. Internal short circuit: Shrinkage, curling, breakage, and burr piercing the isolation film of the polymer lithium battery will cause internal open circuit and bulge. 8. Overcharge and overdischarge: The polymer soft-pack battery is overcharged or overdischarged, and the protection board is abnormal, and the battery core will be seriously outgassed. 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: What is the working principle of hydrogen new energy fuel power battery?