Selection and specifications of UPS battery battery systems, UPS battery cell computing method

　　Author ：Iflowpower – Dodávateľ prenosných elektrární

Selection and specifications of UPS battery systems, UPS battery computing methods. With the development of Internet data, the communication machine room uses the UPS equipment to have more and more, and the battery is used as the backup energy of the UPS device, the capacity configuration determines the backup time of the system, which directly affects the security, reliable and stable operation of the electric equipment. Below Xiaobian to answer how to choose a UPS battery and how to calculate ups batteries.

The selection and specifications of the UPS battery system are in the UPS battery power supply system, and the battery is the pillar of this system. UPS without batteries can only be called a regulator power supply. UPS can achieve uninterrupted power supply, because of the battery.

When designing UPS, you should first consider the choice of battery, that is, the rated voltage, rated capacity of the battery, and the combination of storage batteries, etc. (1) The rated capacity of the battery is selected due to the actual use capacity of the battery, the system voltage, discharge time, the battery operating ambient temperature, battery storage time, and characteristics are closely related. The capacity of the battery is generally referred to at 20 ° C, when discharging to 1.

75V / monomer at 20H, the number of power outputs. (2) Indicators of the battery selection internal resistance: The UPS battery in the internal block should be selected, so that the large current discharge can be continuously discharged. If the internal resistance is large, the power consumption is increased during the charge and discharge process, so that the battery is hot.

Floating voltage: At the same temperature, the floating voltage value is high, and the battery floating voltage value of the battery is generally small. The battery floating voltage value should be corrected at different temperatures. A 2V single-series battery is used in large and medium-sized UPS to prevent mixing with small capacity combined batteries.

The model model of domestic battery-produced Battery is generally labeled on the housing, divided into three sections of 5 parts: series single battery number, battery type and characteristics, rated capacity and special performance. Examples of the model of the model 6-QA (W) -54a showed that there were 6 monobi batteries, each monobic battery voltage is 2V, which is a rated voltage is 12V; 2, Q represents the use of a battery. , Q is the car to start the battery.

M is a motorcycle battery. JC is a battery battery. The HK is a battery battery.

D represents the electric vehicle battery, F represents the valve-type battery; 3, A and W represent the type of battery, A represents a dry-load battery, W Represents a maintenance-free battery, if the normal type battery is not indicated; 4, 54 indicates that the rated capacity of the battery is 54ah; 5, the corner A represents the first improvement of the original product, the name The plus bid b expresses the second improvement, and a class push. UPS battery calculation method 1, constant current mode calculation According to the energy conservation principle: C = (PL * T) / (vbat * η * k) C is battery capacity (AH); PL is UPS output power (W); T is Battery backup time (h); VBAT is the battery pack voltage (VDC); η is the UPS battery inverter efficiency (0.90-0.

95, according to the model selection); k represents battery discharge efficiency. Determine the AH number of the battery according to the calculation result, and select the appropriate configuration according to different brands of UPS batteries, respectively. 2, the constant power calculation formula W = PL ÷ (N * 6 * η) (Watts / Cell) PL is the powdery power (kW) of the UPS rated output; N is 12V number of battery; Vf is the rated voltage of the battery pack; η is Inverter efficiency.

That is to calculate the power required for the unit cell, and then find the battery model that can meet the requirements through the constant power discharge table supplied by the battery manufacturer. Terminate the discharge voltage to determine according to 1.75V / Cell.

Usually the power table given by the battery manufacturer is the power of the monomer 2V / Cell, meaning WATTS / CELL. Some of the power table given by the manufacturer is Watts / Block, then multiply the coefficient. The battery is an important part of the UPS power supply system.

Due to the battery itself or management, there are many UPS faults that are caused by the battery. Therefore, it is necessary to strengthen the understanding of the battery characteristics, correctly select and use the battery, and extend the battery life of the battery as much as possible.