Common anomalies in the winding process of aluminum shell batteries

Uneven winding, inconsistent winding tightness, residual gas or pollutants.

1. Uneven winding: When the battery core is wound, the positive and negative plates in the aluminum case are not evenly wound together, resulting in unbalanced and asymmetrical winding. Will affect the performance and stability of the battery.

2. Inconsistent winding tightness: due to improper operation or equipment problems, the tightness between metal foils will be inconsistent when winding the battery core. It will lead to uneven stress and compression inside the battery cell, which will further affect the performance and life of the battery.

3. Residual gas or pollutants: During the winding process of the battery core, residual gas or pollutants will enter the aluminum case, which will affect the performance and safety of the battery. It is caused by equipment problems, raw material pollution or improper operation.