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Author ：Iflowpower – Portable Power Station Supplier
How much fault occurs when the UPS power supply is used for a long time, and the statistics of UPS maintenance work. Reserve UPS power supply is 50% due to battery triggers. Online UPS power supply is reasonable for designing circuitry, the balance taken by the drive power component capacity, so the power supply circuit is very low, and there is a battery failure rate of 60%.
Therefore, the correct use of maintaining the life of the UPS battery is one of the key factors that reduce the failure of uninterruptible power supply. The following detailed description: 1. Regular inspection periodically check the end voltage and internal resistance of each unit battery periodically.
For a 12V unit battery, if the end voltage difference between the unit cells is found to be more than 0.4V or more than 80m or more, the unit cell should be balanced to restore the internal resistance of the battery. And eliminate end voltage between each unit cell.
The charging voltage takes 13.5 ~ 13.8V when charging.
The vast majority of batteries that have been balanced charging can return its internal resistance to 30m or less. During operation, the UPS power supply is eliminated due to the above-described imbalance of each unit battery characteristics, which is not possible to rely on the charging circuit inside the UPS power supply, so a significantly unbearable battery has undergone such characteristics. Group, if the offline is not charged in time, its unevenness will become more and more serious.
2. Re-floating the UPS power stop for more than 10 days, before rebooting, the UPS power supply should be launched without the load to re-use the charging sub-product electrical circuit in the machine to recharge the battery to the battery. run.
The UPS power supply is in a floating state without discharge, which is equivalent to the storage of storage. If this state has been too long, the battery has not been scrapped due to the storage of too long, it is important that the battery internal resistance is increased, and the internal resistance can reach a few times. We found that after 2 months of room temperature, it is stored for 1 month, and the capacity of the battery is about 97% of its rated value.
If it is not used for 6 months, its use capacity becomes 80% of the rated capacity. If the storage temperature is increased, its use capacity will decrease. It is therefore recommended that the user is best to unplug the mains input every 20c, so that the UPS power supply is operated by the battery supply energy to the inverter.
However, this operation should not be too long, and about 30% of the load is about 30% of the rated output, it can be discharged. 3. Reduce the service life of deep discharge electricity is closely related to the depth of it is discharged.
The lighter the load of the UPS power supply, the larger the battery supply of the battery, the larger the amount of capacity of the battery and its rated capacity, in which case the battery is discharged when the UPS power is automatically turned off due to the low low battery voltage. Deep is relatively deep. How does the actual process reduce the battery in depth? Method is simple: When the UPS power supply is in the middle of the electric power supply interruption, most of the UPS power supplies will be around 4s at the gap 4S when the UPS power supply is powered by the electric power supply.
Periodic alarm sound, notify the user to supply energy by the battery. When he heard the alarm sound is urgent, the power supply is already in depth, and should immediately perform emergency treatment, close the UPS power supply. Not forced, generally don't let the UPS power have been working until the battery voltage is too low and the automatic shutdown ends.
4. Using the high peak charging of the power supply About UPS power supply for a long time in the market, low-voltage power supply or frequently-powered power, to prevent the battery from being damaged by the long-term charging, it should make full use of the power supply peak (such as late night) to charge the battery Ensure that the battery has sufficient charging time after each discharge. When the battery is depressed, it is more than 90% of the rated capacity to at least 10 to 12 h.
Note that the charger is used for the UPS power supply-free seal battery that cannot be charged with a controlled silicon-type fast charger. This is because this charger can cause the battery while being in the harsh charging state of the transient overflow and instantaneous transient charging. This state will make the battery greatly decreased, and the battery will be scrapped when it is severe.
When using the UPS power supply of the constant voltage cut-off charging loop, be careful not to transfer the battery voltage too low protection work points, otherwise, over-flow charge can be easily charged in the initial stage of charging. Of course, it is best to use a charger that has both constant current, and constant pressure. 5.
Ensure that the capacity of the power supply temperature battery is closely related to the ambient temperature. In general, the performance parameters of the battery are calibrated at room temperature for 20 ¡ã C, and when the temperature is less than 20 ¡ã C, the power storage capacity will be reduced, while the temperature is higher than 20 ¡ã C, it is available The capacity used will increase slightly. Different models of different models of different models are different from the degree of temperature.
According to statistics, when at -20 ¡ã C, the battery can only reach around 60% of the nominal capacity. The impact of visible temperature cannot be ignored. Of course, to extend the service life of the battery pack not only pay attention to maintenance, but also consider load characteristics (resistivity, inductance, capacitance) and size when selecting.
Don't make the battery last over light load operation, so as not to avoid the UPS battery discharge current, the battery is scrap.
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