Battery Manufactory

A slight swelling of the polymer lithium battery will affect the use, reduce the battery performance, and in severe cases will burst the packaging aluminum foil, causing leakage and corrosion. Next, let's analyze the reasons for the inflation of polymer lithium batteries. 1. The cause of gas production There are two types of gas production in flexible packaging lithium-ion batteries: normal gas production and abnormal gas production. Normal gas production refers to the chemical formation process in the battery cell production process, which is accompanied by the formation of the SEI film, and is often referred to as chemical production gas. This kind of gas can generally be temporarily stored in the air bag and discharged in the subsequent process, which does not have a significant impact on the cell. Abnormal gas production means that when the air bag is removed and the packaging is completed, the amount of gas is excessive due to an abnormality inside the battery. In this case, t