UPS battery charging method
In the later stage of UPS constant voltage charging, the charging current gradually decreases. Compared with other charging methods, it is closer to the best charging method, and there are many other more commonly used charging methods. Mainly include UPS constant current charging, constant voltage current limiting charging, UPS fast charging and so on. At this time, the user should choose the most suitable charging method according to actual needs.
At present, UPS power supplies use battery charging methods in three ways: constant current charging, constant voltage charging, and fast charging
1. Constant current charging: Constant current charging uses a segmented constant current method to charge. This is generally achieved by adjusting the charging device itself. The charging current can be selected and adjusted arbitrarily, and it is highly adaptable, especially suitable for long-term charging with small currents, and also beneficial to the charging of batteries with slower capacity recovery. The disadvantage is that the initial charging current is too small, and the later charging current is too large. The charging time is too long and the gas is released. Generally, it is used in the initial charging and desulfurization charging at low current.
2. Constant voltage charging: Constant voltage charging means that each single cell battery is charged with a constant voltage. The characteristics are: the initial charging current is quite large, the battery electromotive force and the relative density of the electrolytic liquid rise rapidly, as the charging continues, the charging current gradually decreases, and only a small current passes at the end of the charge: short charging time, low energy consumption, Generally, the battery can be charged for 4~5h to obtain 90%~95% of its own capacity; if the charging voltage is selected properly, the entire charging process can be completed in 5h, and the entire charging process does not require human attention. This charging method is widely used for supplementary charging .
3. 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.
