An internal formation charging method for an ultralow temperature starting type lead storage battery

Abstract

The application belongs to the technical field of lead storage battery preparation, and particularly relates to an internal formation and charging method suitable for an ultralow-temperature starting type lead storage battery. The core of the application is a formation process suitable for a -41 DEG C ultralow-temperature starting battery: no water is discharged in the early stage, the battery temperature linearly rises to the interval of 70-80 DEG C, then sharply rises, at this time, the internal temperature is monitored and water is timely discharged to reduce the temperature, so that thermal runaway is prevented, thereby breaking through the conventional current limit of 0.3C 20 . The negative electrode expansion agent is optimized in combination, the electrolyte density is preferably 1.295-1.310 g / ml, the negative plate and thin plate multi-piece structure (12+ / 11-) is adopted, and the constant current charging with the voltage limit of 14.5-14.7 V is adopted. Finally, the low-temperature discharge capacity is increased by 5%, the low-temperature life is increased by 8-15%, and the advantages of low lead consumption, large capacity and long life are achieved.