What is the principle of the lead-acid battery for UPS power supply

In the later period of charging, the positive and negative electrodes of the lead-acid battery for Shante UPS power supply have gas respectively. It is generally believed that oxygen will precipitate when the positive electrode is charged to 70% of its full charge, and hydrogen gas will be precipitated when the negative electrode is charged to 90%. The VRLA battery is designed to prevent hydrogen from evolving as much as possible, and the oxygen precipitated in the later stage of charging should be recombined as much as possible to prevent oxygen loss, and even if the oxygen is eliminated, the acid filter in the safety valve is used to reduce acid mist, etc. Precipitation, beware of electrolyte loss. The discharge process of the lead-acid battery for Santak UPS power supply: The battery for Santak UPS power supply converts chemical energy into electrical energy output. For the negative electrode, it loses electrons and is oxidized to form lead sulfate; for the positive electrode, it is reduced by electrons, which also forms lead sulfate. The net result of the reaction is the presence of directional moving negative charges in the external circuit. Since both polar active materials are converted into lead sulfate after discharge, it is called bipolar sulfation theory. The reaction between the positive and negative electrode active materials and the spongy metal lead and the diluted sulfuric acid of the electrolyte tends to be stable when the valve-regulated lead-acid battery of Santak is in an open circuit state, that is, the oxidation rate and reduction rate of the electrode are equal, and the electrode potential at this time Balance the electrode potential. When the charge-discharge reaction progresses, the positive and negative active materials and the spongy metallic lead are respectively transformed back and forth through the electrolyte and its discharged state lead sulfate. The most basic electrode reaction formula is Pb+PbO2+2H2SO42PbSO4+2H20. Due to its structural advantages, the lead-acid battery for Shante UPS power supply consumes a very small amount of electrolyte, so it is basically not necessary to add distilled water during the service life. It also has the characteristics of shock resistance, high temperature resistance, small size, and small self-discharge. The service life is generally twice that of ordinary batteries. There are also two types of maintenance-free batteries on the market: the first is to add electrolyte once at the time of purchase, and then do not maintain it during use (add supplementary fluid); the other is that the battery itself has been filled with electrolyte and sealed when it leaves the factory. The user cannot add refill at all. 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: What are the advantages of power lithium batteries?