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Shenzhen Green Power Energy Battery Co.,ltd specializes in a wide range of digital battery such as environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery, 3.7V lithium polymer battery, NiMH battery, NiCD battery, dry cell battery, alkaline battery, heavy duty battery, button cell battery etc. we devote to R&D, innovation, production & sales. With automatic production machines we have been exported goods to all over the world over 15years. We have complete exported certificate such as KC, CE, UL, BSCI, ROHS, BIS, SGS, PSE etc
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What are the requirements for UPS battery intelligent maintenance management system? Most people think that UPS batteries do not require maintenance, but in fact many fault problems are caused by the lack of battery maintenance and management. The UPS battery remote intelligent charging and discharging management system includes an antenna, a modem connected to the antenna, at least one detection branch, and a capacity test module. The detection branch includes a series-connected battery pack and a detection switch.
What are the requirements for UPS battery intelligent maintenance management system?
Under normal circumstances, the UPS battery is in static storage and backup working status. In order to prevent the UPS from entering the "low battery voltage automatic shutdown" working status in a very short time due to the interruption of the mains power supply without the user's complete knowledge. , thereby stopping power supply to the load.
This requires maintenance personnel not only to conduct on-site inspections according to the prescribed time period every day, but also to incorporate battery management into the UPS monitoring system. The UPS detects the status of the battery in real time and transmits battery-related information to the duty room through the network. or control room so that staff can understand the status of the battery to ensure the working quality of the UPS battery. In order to increase the service life of the battery, reduce maintenance work and reduce maintenance costs. A good battery maintenance system should be established and must have:
First, automatic equalization/float charging conversion. That is, the battery is charged evenly when the power supply is normal. After the battery is discharged, it will automatically charge the battery uniformly. When the battery is fully charged, it will automatically switch to float charging.
Second, charging current is limited. Adopt constant current and then constant voltage charging method. In the early stage of charging, the charging current is relatively large. The UPS automatically limits the charging current to 0.1~0.2C according to the configured battery capacity, and performs constant current charging on the battery to ensure safe and fast battery charging. When the battery capacity reaches 80%, the UPS switches to floating charging voltage to charge the battery at constant voltage.
Third, backup time display and low voltage alarm. When the UPS switches to battery power supply for various reasons, users need to know the backup time of the system in a timely manner and take corresponding measures. When the battery voltage drops to the lowest limit, an alarm will notify the user, and then it will automatically shut down to prevent the battery from being deeply discharged.
Fourth, temperature compensation. When the ambient temperature changes, the float voltage must be corrected, and the correction coefficient is 18mV/℃ (nominal 12V battery). For simplicity, it can be calibrated in stages.
Features of UPS battery intelligent management
●Remote: View battery performance status parameters in real time through the network;
●Centralization: Centralized management of battery packs in all monitoring centers within the jurisdiction is possible;
●Intelligent: Using the latest maintenance technology in the field of battery testing, it is easy to achieve comprehensive and in-place automatic maintenance;
●Online monitoring of battery cell voltage, internal resistance, pole temperature, cell capacity, pack terminal voltage, pack terminal current, ambient temperature, cell ripple voltage, ripple current, etc.;
● Equipped with a variety of internal resistance test modules, it can automatically select the optimal test module according to system interference conditions, ensuring that the true internal resistance of the UPS battery can be accurately and stably tested in various environments to reflect the actual performance of the battery, and Regular automated testing.
Four maintenance methods for UPS batteries
Maintain a suitable ambient temperature
Generally speaking, the factor that affects battery life the most is ambient temperature. Generally, the optimal ambient temperature required by battery manufacturers is between 20-25°C. Although the increase in temperature has improved the battery's discharge capacity, the price paid is that the battery life is greatly shortened. According to experimental measurements, once the ambient temperature exceeds 25℃, the battery life will be shortened by half for every 10℃ of increase.
Charge and discharge regularly
The float voltage and discharge voltage in the UPS power supply have been adjusted to the rated value when leaving the factory, and the discharge current increases with the increase of the load. The load should be reasonably adjusted during use, such as controlling electronic equipment such as microcomputers. The number of units used. Under normal circumstances, the load should not exceed 60% of the UPS rated load. Within this range, the battery's discharge current will not be over-discharged.
Take advantage of communication features
At present, most large and medium-sized UPS have operable functions such as communication with microcomputers and program control. Install the corresponding software on the microcomputer, connect the UPS through the serial/parallel port, and run the program to communicate with the UPS using the microcomputer. Generally, it has functions such as information query, parameter setting, timing setting, automatic shutdown and alarm.
Replace waste/bad batteries promptly
At present, the number of batteries equipped with large and medium-sized UPS power supplies ranges from 3 to 80, or even more. When certain batteries/batteries in the battery pack are damaged, maintenance personnel should inspect and test each battery to eliminate damaged batteries. When replacing a new battery, you should strive to purchase batteries of the same manufacturer and model. It is prohibited to mix acid-proof batteries, sealed batteries, and batteries of different specifications.
When a large number of UPSs fail, the first thing to be thrown away is the expensive batteries. Thousands of dollars were spent to establish the backup power system. Due to the uncertainty of the battery status, the system was paralyzed and important data was lost, with disastrous consequences. The losses were so huge that they could not be compensated with tens of thousands of yuan. Therefore, necessary maintenance of the UPS battery pack is the key to extending the service life of the UPS.
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