阅读说明：本技术 一种蓄电池的制造方法 (Method for manufacturing storage battery ) 是由 杨新新 周刚 程志明 于 2020-01-19 设计创作，主要内容包括：本发明涉及一种蓄电池的制造方法,包括如下步骤：步骤1：向待化成的铅酸蓄电池中加入第一密度硫酸溶液,所述第一密度位于1.04g/cm3～1.28g/cm3之间,通电,完全化成。本发明的制造方法可以提高铅酸蓄电池循环寿命,提高化成效率。(The invention relates to a method for manufacturing a storage battery, which comprises the following steps: step 1: adding a first-density sulfuric acid solution into a lead-acid storage battery to be formed, wherein the first density is between 1.04g/cm3 and 1.28g/cm3, and electrifying to completely form the lead-acid storage battery. The manufacturing method of the invention can prolong the cycle life of the lead-acid storage battery and improve the formation efficiency.)

1. A method for manufacturing a lead-acid battery, characterized by comprising the steps of: step 1: adding a first-density sulfuric acid solution into a lead-acid storage battery to be formed, wherein the first density is between 1.04g/cm3 and 1.28g/cm3, and electrifying to completely form the lead-acid storage battery.

2. The method for manufacturing a lead-acid storage battery according to claim 1, wherein after step 1 is completed, the method further comprises step 2: and adding a second density sulfuric acid solution into the completely formed lead-acid storage battery, and electrifying, wherein the second density is higher than the first density.

3. The method of claim 2, wherein the second density is between 1.25 and 1.6g/cm 3.

Technical Field

The invention relates to the field of storage batteries, in particular to a manufacturing method of a storage battery.

Background

At present, the lead-acid storage battery needs to be formed in the manufacturing process, because the cell space of the battery is small, in order to ensure enough acid amount for formation, no matter how many times of acid addition is adopted to complete formation, a step of adding high-density acid liquor for liquid-enriched formation is needed, the high-density acid liquor is added as a formation medium to complete the liquid-enriched formation, white spots are easily generated on the surface of a polar plate, the AbO2 conversion rate is low, the cycle life of the battery is short, in addition, the rich-liquid formation is adopted, the formation efficiency is low, the time consumption is long, the energy consumption is large, and the like.

Disclosure of Invention

In order to solve the technical problem, the invention provides a method for manufacturing a storage battery, which comprises the following steps: step 1: adding a first-density sulfuric acid solution into a lead-acid storage battery to be formed, wherein the first density is between 1.04g/cm3 and 1.28g/cm3, and electrifying to completely form the lead-acid storage battery.

Further, after step 1 is completed, step 2 is further included: and adding a second density sulfuric acid solution into the completely formed lead-acid storage battery, and electrifying, wherein the second density is higher than the first density.

Further, the second density is between 1.25 and 1.6g/cm 3.

The manufacturing method of the invention can prolong the cycle life of the lead-acid storage battery and improve the formation efficiency.

Drawings

FIG. 1 is a graph showing cycle life curves of examples 1 to 4 of the present invention and comparative example 1.

Detailed Description

The invention is further described with reference to specific examples.

The manufacturing method of the storage battery comprises the following steps: step 1, adding a sulfuric acid solution with a first density into a lead-acid storage battery to be formed, wherein the first density is preferably 1.04g/cm 3-1.28 g/cm3, and selecting a proper density sulfuric acid solution according to the requirements of field actual conditions on a production field, for example, adding a sulfuric acid solution with a density of 1.05-1.15 g/cm3 to obtain a battery with relatively high service life requirement and relatively low capacity requirement after formation is finished; the method comprises the steps of obtaining a battery with relatively low service life requirement and relatively high capacity requirement after formation is finished, adding 1.16-1.28 g/cm3 sulfuric acid solution, wherein the volume of the added sulfuric acid solution can be 70% -110%, preferably 70% -99% of the saturated acid absorption amount of a lead storage battery partition plate, and when the acid absorption amount in the formation process is lower than 100%, namely the acid absorption amount of the lead storage battery partition plate is in an unsaturated state, the battery enters a barren solution state, an oxygen composite channel is opened, and oxygen circulation starts, so that the formation efficiency can be greatly improved, water loss is reduced, electric energy is saved, the formation time is shortened, and the production efficiency is improved; step 2, electrifying to complete formation; in the formation process, the sulfuric acid solution with the first density is used as a medium to participate in the formation reaction, and after the formation is completed, namely after the basic lead sulfate and the lead oxide are converted, the battery with the formation completed has a longer service life; and 3, adding a sulfuric acid solution with a second density into the battery after the formation is finished, wherein the second density is preferably 1.25-1.6 g/cm3(25 ℃), because the capacity of the sulfuric acid solution with the first density after the formation is low, in order to achieve the required battery capacity, the density of the sulfuric acid solution with the second density is required to be higher than that of the sulfuric acid solution with the first density, and the sulfuric acid solution with the second density is used for mixing with the acid after the formation of the battery so as to be regulated into the actually required sulfuric acid with a specific concentration. And 4, finishing the formation, and extracting free acid if the battery saturation is higher than 100%. The first addition of the low-density sulfuric acid solution can be 1 addition of the low-density sulfuric acid solution or multiple additions of the low-density sulfuric acid solution, and when the low-density sulfuric acid solution is added multiple times, the volume of the low-density sulfuric acid solution added at the next time is preferably larger than that of the low-density sulfuric acid solution added at the previous time. The second addition of the high-density sulfuric acid solution can be 1 addition of the high-density sulfuric acid solution or multiple additions of the high-density sulfuric acid solution, and when the high-density sulfuric acid solution is added multiple times, the volume of the high-density sulfuric acid solution added at the next time is preferably smaller than that of the high-density sulfuric acid solution added at the previous time.