Finishing methods and techniques for analyzing UPS lithium ion battery systems

2022/04/08

  Author :Iflowpower – Portable Power Station Supplier

First test the working state of the battery on the UPS, specifically record the floating voltage of each battery. It is necessary to relevant related experiences, the battery should be in each single-single voltage of 2.25V, that is, the voltage of the 12V battery should be strict 13.

5V. If it is lower than this voltage, it is necessary to suspect that the battery is increeding. If the battery voltage is higher than this voltage, it is necessary to doubt whether the battery has lost water.

To install this requirement, observe the total voltage of the lithium ion battery UPS. If the 48V battery is used in series, the calculation of single-finger battery voltage 2.25V is installed, it should be 54V.

Below this voltage, the battery is under charging, higher than this voltage, battery is lost. When testing the lithium-ion battery UPS, it is very not normal to see a lot of UPS. The battery is then charged and discharge, and the capacity of the UPS lithium-ion battery is then tested.

Pay attention to the charging of 2.4V / single, 0.1c ~ 0.

25c current limitation to charge. When the battery charges reaches 0.01C current after entering the constant pressure, the charging ends.

The battery is then discharged according to the current discharge of about 0.1c to 0.25c, the discharge is completed, the discharge time, the battery capacity is calculated.

2. Battery with high voltage, straight into pulse repair vulcanization. UPS lithium ion batteries after hydrating also need pulse repair vulcanization.

Since the vulcanization of the UPS lithium-ion battery is quite serious, the general repair time is greater than 3 days. Every 3 days, a charge and discharge test battery capacity is performed. If the battery capacity is not rising or rising, it must be repaired.

Also, I found that the battery will no longer rose, this time the battery repair is over. And recording the capacity of the battery. What to add here is that each time the battery is discharged, it must be charged in time, and then save or continue repair the battery.

Otherwise, the battery will quickly vulcanize after 12 hours. 3, the grouping of repaired batteries, saves 1 day, measure its open circuit voltage. Communicate according to the battery's open circuit voltage and battery capacity.

Ask the battery's open circuit voltage error no more than 0.03V, the battery capacity difference is not more than 10%. In this way, a part of a battery and voltage deviation is required.

Also remove the battery with large voltage deviation. There is also a battery with a capacity of less than 70%. As far as my related experience, the use of batteries is about 60% to 85%.

To add other lithium-ion batteries ups to supplement. Therefore, when repairing the lithium-ion battery UPS, it is often fixed at the same time to fix the same UPS, with 6 to 7 batteries, and help users buy 3 ~ 4 batteries. There must be capacity to meet the requirements and battery capacity cannot be grouped, and use it for it.

4. Maintain the lithium-ion battery associated with the repair, usually hang the battery pulse protector to the battery so that the battery will not vulcanize. The way to give the battery and protector is to hang a protector every 12V battery.

And test each 3 months, timely remove the low voltage low, charge and discharge and pulse repair of the battery. In this way, it can generally increase the battery life from 1 to 4 years.

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