Automatic protection function of over discharge of Shengyang battery

Automatic protection function of over discharge of Shengyang battery

The over discharge of Shengyang battery means that when the discharge voltage of the battery drops to the lowest protection voltage, the battery is in the state of deep discharge. The main causes of over discharge of battery are as follows:

① the minimum protection voltage of Shengyang battery is set incorrectly.

② small load, long time, small current discharge. In parallel redundancy system, over discharge caused by this factor is very common. This is because, in the system design, the capacity of UPS has a certain margin, and when equipped with battery, it is generally required to design according to the full load. In practical application, the load can only reach about 30% of UPS capacity. According to this situation, if the backup time of the designed system is 3omin, the actual discharge time can reach about 4h, which is very easy to cause over discharge of Shengyang battery.

The setting error of the minimum protection voltage can be corrected by modifying the relevant settings, but the over discharge caused by small load, long time and small current discharge can not be solved. Therefore, a more advanced protection method is that UPS can dynamically adjust the minimum protection voltage of Shengyang battery according to the load situation. The microprocessor in the intelligent over discharge protection unit will automatically adjust the off voltage according to the discharge current of the battery to protect the Shengyang battery from over discharge damage.