Formation method of lead-acid storage battery

Abstract

The invention relates to a formation method of a lead-acid storage battery. The formation method comprises the following steps: standing for 1 hour; charging for 1 hour at a current of 0.05 amperes; charging for 36-42 hours at the current of 0.15 amperes; charging for 10-14 hours at the current of 0.12 amperes; discharging at 0.5 amperes at the voltage of 11.2-10.5V; charging for 10-12 hours at 10.5 amperes; charging for 5-8 hours at 0.15 amperes; charging for 3-5 hours at the 0.05-0.1 amperes and carrying out acid extraction; charging for 2-6 hours at 0.02C-0.08 amperes; discharging at 0.5 amperes at the voltage of 10.5V; and charging for 12-20 hours at 0.05-0.1C amperes and measuring open-circuit voltage after the battery stands for 24 hours. According to the invention, the consistency of the acid liquor in the battery can be ensured.

Description

Technical field [0001] The invention relates to a method for forming a lead-acid battery. Background technique [0002] In view of the proven high performance, low cost, easy recycling and reliable safety of lead-acid batteries, it has been widely used worldwide. After the lead-acid battery is assembled, the battery needs to be acidified. During the acid addition, the battery cannot hold such dilute sulfuric acid. It is necessary to put an acid pot on the battery to ensure the acid required by the battery and the acid between the batteries. Consistency of concentration. In the current production operation, the acid is pumped after the battery is formed and the battery capacity is tested. The 0.025C ampere battery or 15v voltage 2H is used to pump the acid, including the large acid in the conjoined pot and the battery cell. Draw out the small acid. 1. Due to the difference in volume between the lead-acid battery plates and separators, according to the existing operation method,...

AI Technical Summary

Problems solved by technology

1. Due to the difference in volume between the plates and separators of lead-acid batteries, according to the existing operation method, there will be too much acid in the battery and the difference between the batteries is very large.

2. When pumping small acid from the battery, because it needs to be inserted into the upper part of the electrode group, because of the size of the insertion force, the size of the negative pressure, and the difference between the tubes, the consistency of the acid pumping varies greatly.

When the battery is used, it is charged and discharged according to the group of batteries. If the acid content of each battery varies greatly, it will cause the entire group of batteries to be undercharged during charging, and some batteries will be overcharged, which will cause the group of batteries to fail. Single lag affects battery life

If the acid is pumped after the completion of the formation, that is, after the discharge, because the battery needs to measure the termination voltage of the battery at the end of the discharge, the discharge process must be arranged according to the production, and a small current is required in this process. Charging basically does not generate much gas; during the discharge process, the liquid in the acid pot will continuously enter the battery. After measuring the cut-off voltage, the charged power is 1.1-1.3 times the discharged power. It is impossible to discharge the acid After charging, there is a certain difference between the polar plate and the separator paper, resulting in different volumes in the plastic case. If the amount of acid liquid entering the plastic case is different, the acid in the battery cannot be guaranteed. liquid consistency