Top ten maintenance methods for APC UPS power lead-acid batteries

著者：Iflowpower – Lieferant von tragbaren Kraftwerken

The battery is an important part of the UPS power system. Its advantages and disadvantages are directly related to the reliability of the entire APCUPS power system. No matter how advanced the APCUPS power design, how is the function, once the battery is invalid, the APCUPS power supply cannot supply uninterrupted power supply.

Don't choose inferior lead-acid batteries because of the cheap map, which will affect the reliability of the entire APCUPS power supply (http://www.zhenchina.com/) system and will cause greater losses.

1. Ambooting the battery in ambient temperature. The ambient temperature is too high, which will cause the battery to overcharge the gas.

If the ambient temperature is too low, it will cause the battery to charge, which will affect the battery life. Therefore, it is generally required that the ambient temperature is about 25 ° C, and the APCUPS power floating voltage value is also set according to this temperature. In actual application, the battery is typically charged in the range of 5 ° C to 35 ° C, which is less than 5 ° C or higher than 35 ° C, which greatly reduces the capacity of the battery, shortening the battery life.

2, the impact of discharge depth on battery life is also very large. The deeper the battery discharge, the less the number of cycles, so deep discharge should be prevented during use. Although the APCUPS power supply has battery low potential protection, the APCUPS power is automatically turned off when the unit battery is discharged to about 10.

5V. However, if the APCUPS power supply is in a light discharge or no-load discharge, the depth discharge of the battery will also cause. 3.

The battery is stored, transported, and the part capacity is lost due to self-discharge. Therefore, before the installation is installed, the residual capacity of the battery should be determined according to the battery's open circuit voltage, and then supplement the battery to supplement the battery. Battery for standby shelves, supplementary charging should be performed every 3 months.

It can be determined by measuring the battery open circuit. Take 12V battery as an example. If the open circuit voltage is higher than 12.

5V, it indicates that the battery energy is more than 80%. If the open circuit voltage is below 12.5V, supplement charging should be performed immediately.

If the open circuit voltage is less than 12V, it means that the battery storage electrical can be less than 20%, the battery is unable. 4, charging voltage. Since the APCUPS power battery is a standby mode of operation, the mainstation of the main electricity is in the state of charge, only when power is powered off.

In order to extend the battery life, the charger of the APCUPS power supply generally controls the constant voltage limit. After the battery is full, it is converted to a floating state, each floating voltage is set to 13.6V.

If the charging voltage is too high, the battery will be overcharge, and it will make the battery insufficient charging. The charging voltage abnormality may be caused by a battery configuration error, or due to the charger failure. Therefore, when installing the battery, be sure to pay attention to the correctness of the battery, the quantity of the number, different specifications, and different batches of batteries do not mix.

Do not use inferior chargers, and consider heat dissipation during installation. At present, in order to further improve battery life, advanced APCUPS power supplies use ABM (AdvanceDbatteryManagement) three-stage intelligent battery management method, that is, charging is divided into three phases of initial charging, floating charge and rest: the first stage is constant current equalization charging The battery capacity is charged to 90%; the second phase is floating charging, charge the battery capacity to 100%, then stop charging; the third stage is natural discharge, in this stage, the battery uses its own leakage current discharge, always To the specified voltage limit, then repeat the above three stages. In this way, after the previous charge is filled, it still has a floating state of the battery in 24 hours, so it extends the life of the battery.

5, maintenance-free battery due to the adoption of the absorbent electrolyte system, there is no gas in normal use, but if the user uses improper use, the battery will be charged, and the gas will appear, and the internal pressure of the battery will increase. The pressure valve on the battery is open, which will cause the battery to burst the battery. 6, battery charging current is generally expressed in C, the actual value of C is related to battery capacity.

For example, 100AH ​​battery, c = 100A. Panasonic lead acid freely maintains the best charging current of the battery is about 0.1c, the charging current cannot be greater than 0.

3c. The charging current is too large or too small to affect the battery life. The discharge current is generally required between 0.

05C to 3C, and the APCUPS power supply can meet this requirement in normal use, but it is necessary to prevent accidental situation, such as battery short circuit, etc. 7, the APCUPS power supply is during operation, pay attention to monitor the end voltage value of the battery pack, the floating current value, the voltage value of each battery, the battery pack and the DC bus to the ground resistance and insulation. 8.

Do not add or reduce the load of several monomer batteries in the battery pack, which will result in uniformity of unbalanced cell capacity and charging, reduce battery life. 9, the battery should be installed as much as possible in clean, cool, ventilated, dry, and prevent the effects of sunlight, heater or other radiation heat sources. Battery should be placed correctly, non-inclined angles.

Each battery is connected to a firm connection. 10, regular maintenance. The battery should be periodically checked after using a time, such as observing whether the appearance is abnormal, measuring whether the voltage of each battery is average.

If the battery will continue to be charged for a long time, the battery will make the activity of the battery becomes poor. Therefore, even if it is not stopped, the APCUPS power supply also periodically discharges the discharge test to keep the battery activity. The discharge test can generally be carried out three months, the practice is the APCUPS power supply - preferably 50%, then disconnect the market, so that the APCUPS power supply is in battery discharge, and the discharge duration is generally a few MS to dozens of MS, restore the city power supply after discharge, continue to charge the battery.

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