1, maintain the appropriate ambient temperature:
An important factor affecting the life of the battery is the ambient temperature, and the best ambient temperature required by the battery manufacturer is 20℃-25℃. Although the increase in temperature has improved the discharge capacity of the battery, the cost is that the life of the battery is greatly shortened. According to the test, once the ambient temperature exceeds 25 ° C, the life of the battery will be reduced by half for every 10 ° C increase.
At present, the batteries used by UPS are generally maintenance-free sealed lead-acid batteries, and the design life is generally 5 years, which can be achieved in the environment required by the battery manufacturer. Failure to meet the specified environmental requirements, the length of its life has a great difference. In addition, the increase of the ambient temperature will lead to the enhancement of the chemical activity inside the battery, resulting in a large amount of heat energy, which will in turn promote the increase of the ambient temperature, this vicious cycle will accelerate and shorten the life of the battery.
2, regular charge and discharge:
The floating charge voltage and discharge voltage in the UPS power supply have been adjusted to the rated value at the factory, and the size of the discharge current is added with the increase of the load, and the load should be adjusted reasonably in use, such as controlling the number of electronic devices such as computers. In general, the load should not exceed 60% of the rated load of the UPS. In this range, the discharge current of the battery will not appear excessive discharge.
Because UPS is connected to the mains for a long time, in the use environment with high power supply quality and few mains outages, the battery will be in a floating charge state for a long time, which will lead to the reduction of the activity of the mutual conversion of chemical energy and electric energy of the battery, accelerating aging and shortening the service life. Therefore, it should be fully discharged every 2-3 months, and the discharge time can be determined according to the capacity and load size of the battery. After a full load discharge is completed, charge for more than 8 hours according to regulations.
3. Use communication functions:
At present, the vast majority of large and medium-sized UPS have operational performance such as communication with microcomputer and program control. Install the corresponding software on the microcomputer, connect the UPS through the series/parallel port, run the program, you can use the microcomputer to communicate with the UPS. Generally with information query, parameter setting, time setting, automatic shutdown and alarm functions.
This section describes how to query the information about the mains input voltage, UPS output voltage, load utilization, battery capacity utilization, internal temperature, and mains frequency. This section describes how to set the basic UPS features, battery maintenance time, and battery exhaustion alarm. Through these intelligent operations, it greatly facilitates the use and management of UPS power supplies and batteries.
4, timely replacement of waste/bad battery:
At present, the number of batteries equipped with large and medium-sized UPS power supplies ranges from 3 to 80, or even more. These individual batteries are connected through a circuit to form a battery pack to meet the needs of the UPS DC power supply. In the continuous operation and use of UPS, due to the difference in performance and quality, it is inevitable that the performance of individual batteries will decline and the storage capacity will not meet the requirements.
When one or more batteries in the battery pack are damaged, the maintenance personnel should conduct an inspection test on each battery to remove the damaged battery. When replacing a new battery, we should strive to buy the same type of battery with the same manufacturer, and prohibit the mixed use of acid-proof batteries and sealed batteries and batteries of different specifications.
