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Internal formation lead plaster preparation process

A preparation process and internalization technology, which is applied in the field of internalization into lead paste preparation process, can solve the problems of battery return, poor plate consistency, and unbalanced composition ratio, and achieve the effects of reducing self-discharge, improving cycle life, and avoiding pollution

Inactive Publication Date: 2014-03-26
CHAOWEI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of high-speed stirring in this preparation process, the dispersion effect of the system can indeed be good, but it is difficult to ensure that the system remains in a good dispersion state when adding materials each time and even when stirring later.
[0004] Because the role of each additive in the lead paste is very important, if the additives are mixed unevenly, the ratio of the local components in the combined lead paste will be unbalanced, and the consistency of the electrode plate made by the traditional process is poor. In the middle and later stages, a large number of batteries will be returned due to a single lagging behind. Therefore, the uniformity of lead paste production is very important

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of internalization into lead paste preparation process embodiment 1 of the present invention, comprises the following steps successively:

[0020] Step 1. Add water to make the preparatory liquid: add the short fibers and additives to the water, stir evenly with high-speed shearing, and the stirring time is 3 minutes to obtain the preparatory liquid; The water additive is evenly dispersed, and at the same time, it also avoids the pollution of the dust to the environment when the powder material is added;

[0021] Step 2, adding lead powder: adding lead powder to the preparatory solution obtained in step 1, and continuing to stir for 6 minutes to obtain a preparatory paste; wherein, the lead powder can be Shimadzu-type lead powder or Barton-type lead powder. Continuous stirring can further oxidize the lead powder, and let the lead oxide generate lead hydroxide, so that the conversion process of lead is greatly accelerated, the stirring time is shortened, and the p...

Embodiment 2

[0030] A kind of internalization of the present invention into lead paste preparation process embodiment 2, comprises the following steps successively:

[0031] Step 1. Add water to make the preparatory liquid: add the short fibers and additives into the water, stir evenly with high-speed shearing, and the stirring time is 8 minutes to obtain the preparatory liquid;

[0032] Step 2, adding lead powder: adding lead powder to the preparatory solution obtained in step 1, and continuing to stir for 8 minutes to obtain a preparatory paste; wherein, the lead powder can be Shimadzu-type lead powder or Barton-type lead powder.

[0033] Step 3. Add dilute sulfuric acid mixture: slowly and uniformly add dilute sulfuric acid to the prepared mixture prepared in step 2, while stirring continuously. After adding dilute sulfuric acid, continue stirring for 20 minutes to complete the mixture. When the temperature is lower than 45°C, the paste.

[0034] In the first step, the polyether type d...

Embodiment 3

[0039] A kind of internalization into lead paste preparation process embodiment 3 of the present invention, comprises the following steps successively:

[0040]Step 1. Add water to make the preparatory liquid: add the short fibers and additives into the water, stir evenly with high-speed shearing, and the stirring time is 5 minutes to obtain the preparatory liquid;

[0041] Step 2. Add lead powder: add lead powder to the preparatory solution obtained in step 1, and continue to stir for 7 minutes to obtain a preparatory paste; wherein, the lead powder can be Shimadzu-type lead powder or Barton-type lead powder.

[0042] Step 3. Add dilute sulfuric acid mixture: slowly and uniformly add dilute sulfuric acid to the prepared mixture prepared in step 2, while stirring continuously. After adding dilute sulfuric acid, continue stirring for 13 minutes to complete the mixture. When the temperature is lower than 45°C, the paste.

[0043] In the first step, the polyether type dispersant...

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Abstract

The invention discloses an internal formation lead plaster preparation process. The internal formation lead plaster preparation technology comprises the following steps in sequence: step one. adding water so as to prepare preparatory liquid; step two. adding lead powder; and step three. adding dilute sulphuric acid so as to form the lead plaster. According to the internal formation lead plaster preparation technology, pure water is used as a solvent and a dispersing agent so as to completely and uniformly disperse materials, so that the uniformity and the consistency of components in the lead plaster are improved, and by adopting a wet-process addition process, the pollution of dust generated during the addition of powder materials to environments is avoided. Compared with a dry-process technology, the internal formation lead plaster preparation process has the advantages that the non-uniform stirring caused by the difference of the powder materials in specific gravity can be solved, meanwhile, the stirring time can aslo be shortened, the production efficiency is improved, as the stirring time is shortened, the good effect of the lead plaster is ensured, and the difficulty in application of the lead plaster is avoided. The self discharge of storage batteries prepared from the lead plaster is obviously reduced, and the heavy current cycle life is obviously prolonged.

Description

technical field [0001] The invention belongs to the technical field of lead-acid batteries, and relates to a preparation process of internalized lead paste. Background technique [0002] The traditional paste mixing process is to mix various powder additives with lead powder in a dry state first, and then add formula water after dry mixing. The dry mixing mechanism of the conventional paste paste machine is to use the stirring blade to force the mixing. Due to the influence of stroke size, the stirring force at the periphery is significantly greater than the force at the center, resulting in curvilinear fluctuations in the stirring and collision rates of various parts. Due to the different proportions of powder additives, the addition ratio is small, and the proportion of lead powder is relatively large. Under the action of gravity, the materials with light specific gravity will finally be concentrated in the heart of the mixer with the shortest stroke. Therefore, simple me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/56H01M4/62
CPCH01M4/57H01M4/62Y02E60/10
Inventor 周明明张森
Owner CHAOWEI POWER CO LTD
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