Why does the soft-pack lithium battery have gas?

Causes of flatulence of soft-packed lithium batteries Poor packaging: moisture in the air enters the inside of the cell during the production process, causing the electrolyte to decompose and produce gas. Cell water content exceeds the standard: In the process, once the water content exceeds the standard, the electrolyte will fail and produce gas. Corrosion: The core of the soft-packed lithium battery is corroded, the aluminum layer is consumed by the reaction, and it loses its barrier to water, resulting in flatulence. Surface damage: Damaged by external force, puncture 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 lithium metal is exposed to the air, it will undergo a violent oxidation reaction with oxygen. Bump: Aluminum material is very 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. Short circuit: The contact between the positive and negative electrodes leads to a short circuit, and the polymer lithium battery cell generates gas or even smoke. Internal short circuit: Shrinkage, curling, breakage, and burr piercing the isolating film of polymer lithium battery will cause internal open circuit and bulge. 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: What are the advantages and disadvantages of lithium batteries for electric vehicles?