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Internal formation lead plaster preparation process

A technology of internalization and lead paste, applied in electrical components, battery electrodes, circuits, etc., to achieve the effect of improving high-current cycle life, reducing self-discharge, and avoiding pollution

Active Publication Date: 2014-03-26
JIANGXI XINWEI POWER ENERGY TECH
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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.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of internalization of the present invention into lead paste synthesis process embodiment 1, comprises the following steps successively:

[0021] Step 1. Add dilute sulfuric acid to prepare the preparatory solution: add short fibers and additives to dilute sulfuric acid, stir evenly with high-speed shearing for 3 minutes, and then quickly freeze to obtain the preparatory solution; put the weighed short fibers and additives through suction The powder device is sucked into the shearing machine, mixed and sheared for 3-6 minutes, the purpose is to make the additives soluble in acid dissolve in acid in advance, such as bismuth trioxide is insoluble in water, but soluble in acid, in order to better dissolve the additives Dispersion, so the process of mixing and dispersing with acid in advance is adopted. Through this process, bismuth trioxide can completely dissolve the acid and better disperse in the acid solution. It also makes the acid-insoluble additives evenly dis...

Embodiment 2

[0032] A kind of internalization of the present invention into lead paste synthesis process embodiment 2, comprises the following steps successively:

[0033] Step 1. Adding dilute sulfuric acid to prepare the preparatory solution: adding short fibers and additives to dilute sulfuric acid, stirring evenly at high speed for 6 minutes, and then rapidly freezing to obtain the preparatory solution;

[0034] Step 2, prefabricated lead hydroxide solution: preheat the lead powder and stir slowly for 8 minutes; add the preheated lead powder into water, stir evenly with high speed shear, and stir for 8 minutes to obtain the lead hydroxide solution ; Wherein, the lead powder can be Shimadzu type lead powder or Barton type lead powder.

[0035] Step 3: Mix the preparation solution with the lead hydroxide solution to form a paste: slowly and uniformly add the lead hydroxide solution prepared in the step 2 to the preparation solution prepared in the step 1 while stirring continuously, and ...

Embodiment 3

[0042] A kind of internalization of the present invention into lead paste synthesis process embodiment 3, comprises the following steps successively:

[0043] Step 1. Adding dilute sulfuric acid to prepare the preparatory solution: adding short fibers and additives to dilute sulfuric acid, stirring evenly at high speed for 5 minutes, and then rapidly freezing to obtain the preparatory solution;

[0044] Step 2, prefabricated lead hydroxide solution: preheat the lead powder and stir slowly for 8 minutes; add the preheated lead powder into water, stir evenly with high speed shear, and stir for 8 minutes to obtain the lead hydroxide solution ; Wherein, the lead powder can be Shimadzu type lead powder or Barton type lead powder.

[0045] Step 3: Mix the preparation solution with the lead hydroxide solution to form a paste: slowly and uniformly add the lead hydroxide solution prepared in the step 2 to the preparation solution prepared in the step 1 while stirring continuously, and ...

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Abstract

The invention discloses an internal formation lead plaster preparation process. The internal formation lead plaster preparation process comprises the following steps in sequence: step one. adding dilute sulphuric acid so as to prepare preparatory liquid; step two. pre-preparing a lead hydroxide solution in advance; and step three. mixing the preparatory liquid and the lead hydroxide solution so as to form the lead plaster. According to the internal formation lead plaster preparation process, in order to ensure that additives soluble in acid dissolve in acid in advance, and meanwhile, additives insoluble in acid are uniformly dispersed, firstly short fibers and the additives are sheared and mixed with the dilute sulphuric acid in advance, so that a system is highly dispersed, and then the lead hydroxide prepared in advance is added to the dispersed system. The internal formation lead plaster preparation process has the advantages that the wet process charging is realized, materials can be uniformly dispersed, 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. 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 storage batteries, and relates to a process for making internalized lead paste. Background technique [0002] The traditional paste mixing process is to mix various powder additives with lead powder in a dry state. Since the specific gravity of the additives is different and the addition ratio is small, simple mechanical stirring cannot make it fully mixed evenly. The role in the paste is very important. Therefore, if the additives are not mixed uniformly, the ratio of the components in the combined lead paste will be unbalanced. The consistency of the plate made by the traditional process is poor. The only reason behind is the large number of battery returns, so uniform consistency of lead paste formulation is critical. [0003] The Chinese patent application with application number 201210375188.9 discloses a lead-carbon super battery negative electrode preparation process. The carbon material...

Claims

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Application Information

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IPC IPC(8): H01M4/56H01M4/62
CPCH01M4/57H01M4/62Y02E60/10
Inventor 周明明张森
Owner JIANGXI XINWEI POWER ENERGY TECH
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