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Requirements and testing methods for charging and discharging UPS power batteries. The quality of UPS power battery usage is closely related to the safety and reliability of communication, and has a direct impact on the service life of the battery. Maintaining the battery should ensure that it is always in good and reliable condition, and the power supply should be uninterrupted under any circumstances.
UPS power battery charging and discharging requirements
UPS power battery is a traditional traction battery, and there are certain requirements for charging, using, and discharging. Especially in harsh working environments, temperature control is more stringent. When the ambient temperature is above 25 ℃, the capacity of UPS power battery is higher than the rated capacity.
When the ambient temperature is below 25 ℃, the battery capacity is lower than the rated capacity. The capacity of UPS power batteries varies with temperature, and maintenance personnel must carefully adjust the discharge current of the battery according to the actual temperature changes, while controlling the temperature of the battery to maintain it within the range of 22 ℃ to 35 ℃. The high temperature usage environment is the main reason why the actual life of the battery cannot reach the design life.
For every 10 ℃ increase in battery temperature, the amount of charging current accepted under constant voltage will double, and the battery life will be shortened due to the increase in the total accumulated amount of overcharging. The basic requirements for the operation and maintenance of UPS power batteries are: to keep the battery in a fully charged state without overcharging, and to discharge more than 80% of the rated capacity when supplying power to the host separately.
The UPS battery discharge tester is designed specifically for conducting verification discharge experiments, capacity tests, daily maintenance, engineering acceptance, and other DC power load capacity tests on battery packs. The power consumption part of the battery discharge tester uses a new PTC ceramic resistor as the discharge load, completely avoiding the phenomenon of red heat, and is safe, reliable, and pollution-free.
The whole machine is controlled by a microprocessor, with LCD display and Chinese menu. The appearance design is novel, with small size, light weight, and easy mobility. After setting various discharge parameters, the entire constant current discharge process is automatically completed. Fully realize intelligence. Make the entire discharge process safer. Especially suitable for battery acceptance, verification discharge testing, and regular deep discharge applications.
UPS power battery testing method
1. Measure the voltage of the UPS battery pack and individual cells once a month. If the voltage of the battery is found to be low or uneven, handle it promptly;
2. Check the capacity of the battery once a year and activate the battery pack to ensure even battery capacity;
3. Verify the mains power switching device annually by disconnecting power supply one and power supply two from the incoming side respectively, to check the accuracy of the incoming switching module action and ensure that the switching action is correct;
4. Regularly inspect the UPS power battery switching module every year, by disconnecting the mains power supply 1, mains power supply 2, and bypass power supply from the incoming side of the power supply. While checking whether the switching function of the switching module is accurate, also check whether the inverter function is normal.
Test method for battery capacity
1、 Measurement of Floating Voltage Method
2、 Capacity measurement method
3、 Internal resistance or conductivity testing method
4、 Traditional offline capacity testing method
The above are the requirements and testing methods for charging and discharging UPS power batteries. It is necessary to understand the operation of UPS equipment in the station, conduct inspections, surveys, and charging and discharging tests on the batteries, identify damaged or failed single batteries, restore the overall performance of the battery pack, and ensure the normal operation of the UPS system.

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