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1 lead-acid battery pre-treatment precautions
a. The battery component/or electrolyte is subjected to rapid freezing (0-5 ° C), that is, cold filling.
b. Vacuum acid.
c. Usually acid-immersed irrigation (drip irrigation), gravity infusion, low or high vacuum irrigation, pressure irrigation.
2 main problems of acid filling
a. The uniformity of acid filling, the acid is evenly distributed throughout the battery. If it is unevenly distributed, the grid will be corroded and/or lead crystals will be formed.
b. The plates in the acid-filled battery are as far as possible unaffected by CO2, otherwise the plates of the carbonate will release C2 after being acidified.
c. Avoid excessive temperature rise. When filling, the battery needs to be cooled. If it causes overheating, the plate will bend and the separator will oxidize and deteriorate.
3 injection technology points
a. Pay attention to the standing time after filling, to prevent PbSO4 from dissolving, and soluble lead (Pb2+) diffuses into the separator (AGM) to form a short lead crystal.
b. Pay attention to the flushing effect when filling the acid, damage the plate and the separator. Therefore, it is necessary to lay a protective plate (anti-foaming plate) above the battery. The concentration of the liquid injection should be appropriate, too thin, the battery capacity is low, and the high rate discharge is favorable. After discharge, the recovery performance is good, and the cycle life is long. If the acid solution is too concentrated, the battery capacity is high, the life is short, the battery decays fast, and the “shoe-shaped smooth†PbO2 sludge is generated on the surface of the plate.
c. Alkali metal sulfate (Na2SO4, K2SO4) or H3PO4 is selectively added to the electrolyte. Welcome to login http://Query more