What are the important reasons for the bulging and deformation of UPS power batteries?

UPS power batteries have been used for a long time, and sometimes they will bulge and deform. In fact, no matter what type of batteries, including our commonly used mobile phone batteries, they will also bulge if they are used for a long time. The bulge has a great influence on the use of the battery and may even cause an explosion hazard. The bulging deformation of the UPS power battery is mainly caused by the sudden increase in internal pressure. The main reasons are as follows: (1) During the charging operation of the sealed battery, especially in the series UPS battery pack, if the battery pack has been used Charging, if there is a battery of poor quality, there will often be phenomena such as poor internal gas recombination, resulting in bulging. (2) The opening pressure of the safety valve is too high, or the safety valve is blocked. When the internal pressure increases to a certain level, the valve cannot be opened normally. In this case, it is bound to cause bulge deformation. (3) Since the sealed battery is a lean-liquid design, there is a reserved way for the combination of gases, and if there is a rich liquid phenomenon, it will block the O2 that appears from diffusing to the negative electrode, reduce the recombination rate of O2, and increase the pressure in the body . (4) The float charge voltage is set too high and the charge current is large, which causes the O2 to precipitate on the positive electrode plate to accelerate, and it is too late to recombine on the negative electrode. At the same time, the temperature in the UPS power battery rises quickly. , Which makes the battery bulge and deform. 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 relationship between the voltage and capacity of the lithium iron phosphate battery pack?