1) Before discharging, the battery pack should be made in advance to make the battery pack to reach full charge, usually 12 hours at 2.35V / monomer, and stand for 12-24 h.2) Record the other set parameters of the battery pack floating total voltage, monomer floating voltage, load current, ambient temperature, and rectifier (or switching power), while checking if all screws are tightened.
3) Combining the actual situation of the base station / exchange, disconnecting the connection between the battery pack and the switching power supply, confirming that the fake load is in an air-loaded state, correctly connect the fake load to the positive and negative electrode of the battery pack, and record the battery after 15 minutes. Open circuit.
4) Determine the discharge ratio of the battery pack according to the situation, generally discharged at 3 hours or 10 hours (3 hour discharge current is 0.25C10, 10 hours discharge current is 0.10 C10), in the false load Select the matching load file to discharge the battery pack.
5) In the discharge process, considering the current table display accuracy in the false load, the discharge current is required to detect the discharge current with the clamping current table, and adjust the fake load according to the actual display of the clamp table, so that the battery pack is discharged. The required discharge current, the like for 5 minutes, start recording the total voltage of the battery pack, monomer voltage, discharge current, ambient temperature, and the temperature of the connecting strip.
6) If it is selected for 10 hours, it should be measured every 1 hour (3 hours), and each 30 minutes will measure the discharge total pressure, monomer voltage, and discharge current, etc. in the discharge, the period of the measurement should be improved. The 10-hour rate was measured every 30 minutes after 9 hours; the 3-hour rate was measured every 15 minutes after 2 hours. During the discharge process, the temperature of the ambient temperature, the battery monomer, and the connecting strip should focus on, and there is no abnormal case while the battery pack is the lowest single cell.
7) For newly installed battery packs, the discharge end condition is that the battery pack release capacity reaches the rated capacity requirement or a single unit in the battery pack reaches 1.80 V, and the battery pack used online is 43.2V (48V battery system) is the end of the discharge.
8) For the case of the discharge process, if the capacity of the battery pack released during the discharge is terminated, there may be a problem with the factory capacity of the battery pack, and should contact the relevant manufacturers in time.
9) End of discharge, first let the fake load are unloaded, then disconnect the battery pack and the fake load, connect the battery with the switching power supply, at which point the pressure difference between the over-electric battery pack and the rectifier Larger, the fire can be fired when connecting, it is preferable to lower the floating voltage value of the switching power supply, so that the floating voltage value of the switching power supply is as close to the open circuit voltage of the battery pack to reduce the spark.
10) If the discharge condition is normally observed and recorded, if the discharge is not normal, the charging of the battery pack should be monitored to ensure normal charging of the battery.
11) Tools: false load, connect cable, handling tool, pliers current table, multimeter, etc. Recommend: LiFePO4 Battery Manufacturer Energy storage battery Manufacturer Integrated machine energy storage battery series Manufacturer Lead lithium battery Manufacturer Outdoor Backup Battery Manufacturer Portable outdoor power supply Manufacturer Power battery Manufacturer Powerwall LiFePO4 Battery Manufacturer Battery rack Manufacturers Telecom LiFePO4 Battery Manufacturer Wall mounted battery storage Manufacturer China Lifepo4 Battery
