Why is the UPS battery short-circuited?

Causes and consequences of UPS power battery output short circuit: UPS power battery fire case On May 1, 2005, a fire broke out in an access network computer room of Guangzhou Netcom branch. The area of u200bu200bthe fire was about 10m2, and the battery pack and nearby cables were burned. The accident caused all 465 households and data 20 lines of the access network to be interrupted (the user is mainly a company user). After investigation by the fire department, the cause of the fire was a short circuit of the UPS power supply system in the computer room and ignited the combustibles. To. Reasons for short circuit of UPS battery: 1. Corrosion of the internal terminal of the battery, the connection piece of the same pole and the electrode joint 2. The foreign metal or active material of the electrode plate is stuck between the electrode plates after the loss 3. The isolation plate is damaged or penetrated 4 . Too much sediment, causing a short circuit at the bottom of the plate, etc. These reasons are mostly because the connection is not strong enough when installing the battery terminals and connecting strips or the poor contact is not handled in time during daily maintenance operations, which causes the contact resistance between the connecting strip and the pole to increase. During the charging and discharging of the battery pack, the temperature of the contact point rises sharply, and the long-term accumulated heat causes the terminal and the connecting bar to short-circuit and heat, which in turn causes the terminal (connecting piece) to be short-circuited, and the shell is less melted, leading to fire. 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 article: What are the stages of the lithium battery charging process?