What are the reasons for the swelling of the battery?

Reasons for the swelling of the battery 1. The vent hole is blocked. If the vent hole on the battery filling cover is blocked or not unblocked, the gas that appears when the charging time is too long or the charging voltage is too high will gradually accumulate, which will cause the pressure in the battery shell to increase. The bigger it comes, the battery will swell eventually. 2. The charging time is too long. When the UPS battery charging current is too large or the charging time is too long, a lot of gas will appear. In addition, too much current or too long charging time will also cause the electrolyte temperature to increase rapidly, and this will easily cause the battery to swell. 3. Vulcanization of the battery plate If the plate of the UPS battery is vulcanized, the cell voltage and electrolyte temperature will rise rapidly during the charging process, and bubbles will appear earlier and the reaction will be violent. Cause the battery to swell. 4. Insufficient welding between the electrode plate tabs and poles of the battery and the bus bar. When the tabs and poles of the battery plate are not firmly welded to the bus bar, if a large current is discharged, the welding point will be too thin or poor contact. It will cause sparks and ablation, which will cause sparks to ignite the hydrogen-oxygen mixture present in the battery, which will cause the battery to explode. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete it. Previous post: In what ways does the separator affect the performance of lithium batteries?