Do you know what are the charging methods for UPS power batteries?

Analysis of UPS power battery charging method ■UPS constant current charging, as the name implies, constant current charging refers to charging the UPS power battery with a fixed current. If the charging current is set to be large, when starting charging, compare with other charging methods Close to the optimal charging curve, however, as the charging time increases, the charging will become less and less able to meet the charging requirements of the battery due to its larger size. ■Constant voltage and current-limiting charging. Constant-voltage and current-limiting charging is important to remedy the shortcomings of excessive initial charging current during constant voltage charging. It is a method of connecting a resistor in series between the charging power supply and the battery to be charged. Adjust the charging current. When the charging current is too large, the voltage drop on the current-limiting resistor is also large, thereby reducing the charging voltage; when the charging current is small, the voltage drop on the current-limiting resistor is also very small, so that the charging current is automatically adjusted to make It does not exceed a certain limit. Since most of the energy is consumed on the current-limiting resistor, the energy utilization rate is reduced. ■UPS fast charging Fast charging refers to a charging method with a large current method. Fast charging does not produce a large number of bubbles and does not generate heat, which can shorten the charging time. At present, the commonly used fast charging mainly includes pulse charging and high current fast deceleration and fast charging. The battery is charged in stages. At the beginning, high-current constant-current charging is used. When the battery charge reaches a stage, the lower-level current constant-current charging is used, and finally constant voltage charging is used to stabilize the DC bus voltage. The float voltage value. And detect the ambient temperature, according to stable changes, temperature compensation of the battery float voltage, to prevent the battery from being overcharged or undercharged. ■Intelligent charging Intelligent charging is currently a more advanced charging method. The principle is to dynamically track the acceptable charging current of the UPS power battery during the entire charging process. The du/dt technology is applied, that is, the charging power source automatically determines the charging process parameters according to the state of the battery, so that the charging current is kept near the acceptable charging battery curve from the beginning to the end, and the battery is charged in a state where there is almost no gas, thereby protecting the battery. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.