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Production process of storage battery positive plate

A production process and positive plate technology, which is applied in the production process field of battery positive plates, to achieve the effects of inhibiting sulfation of negative electrodes, improving corrosion resistance, and uniform grain distribution

Active Publication Date: 2020-01-14
JIESHOU HUAYU POWER SUPPLY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the application still needs to be improved in terms of the conductivity and service life of the positive plate to meet the high requirements of the modern society on the storage battery

Method used

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  • Production process of storage battery positive plate

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preparation example Construction

[0027] The first step, preparation of alloy grid: Pb-Ca-Sn-Al alloy and alloy additives are gravity casted into lead rod alloy at 500°C, and then the lead rod alloy is made into grid at 500°C;

[0028] Wherein, the alloy additive is TaC (thallium carbide), and the addition amount of the alloy additive is 0.5% of the alloy mass;

[0029] When Pb-Ca-Sn-Al alloy forms grains, due to the precipitation of Ca, it will form unevenly distributed intermetallic compounds, which hinder the growth of grains, resulting in uneven grain distribution and large size differences. After the addition of TaC, TaC can play the role of refining the grain, so that the grain size of the alloy is reduced and the grain distribution is uniform, the microstructure of the alloy is improved, and the corrosion resistance of the grid alloy can be effectively improved;

[0030] The second step is to prepare the positive lead paste, and apply the positive lead paste evenly on the surface of the grid by a coatin...

Embodiment 1

[0044] A production process for a storage battery positive plate, comprising the steps of:

[0045] The first step, preparation of alloy grid: Pb-Ca-Sn-Al alloy and alloy additives are gravity casted into lead rod alloy at 500°C, and then the lead rod alloy is made into grid at 500°C;

[0046] The second step is to prepare the positive lead paste, and apply the positive lead paste evenly on the surface of the grid by a coating machine to obtain a wet grid;

[0047] Positive lead paste is made of the following raw materials by weight: 90 parts of lead powder, 8 parts of sulfuric acid aqueous solution, 14 parts of deionized water, 0.5 part of sodium perborate, 0.15 part of graphene;

[0048] The third step, wet grid curing: in the first stage, the wet grid is cured at a temperature of 48°C and a humidity of 99% for 45 hours; in the second stage, the cured grid in the first stage is cured at a temperature of 84°C without Dry under humidified conditions for 30 hours;

[0049] Th...

Embodiment 2

[0051] A production process for a storage battery positive plate, comprising the steps of:

[0052] The first step, preparation of alloy grid: Pb-Ca-Sn-Al alloy and alloy additives are gravity casted into lead rod alloy at 500°C, and then the lead rod alloy is made into grid at 500°C;

[0053] The second step is to prepare the positive lead paste, and apply the positive lead paste evenly on the surface of the grid by a coating machine to obtain a wet grid;

[0054] Positive lead paste is made of the following raw materials by weight: 95 parts of lead powder, 10 parts of sulfuric acid aqueous solution, 16 parts of deionized water, 0.8 part of sodium perborate, 0.18 part of graphene;

[0055] The third step, wet grid curing: in the first stage, the wet grid is cured at a temperature of 49°C and a humidity of 100% for 44 hours; in the second stage, the cured grid in the first stage is cured at a temperature of 85°C without Dry under humidified conditions for 29 hours;

[0056] ...

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Abstract

The invention discloses a production process of a storage battery positive plate. The production process comprises the following steps: step 1, preparing an alloy grid; step 2, preparing a positive lead paste and uniformly coating the positive lead paste on the surface of the grid through a plate coating machine; step 3, solidifing the wet grid; and step 4, forming the pole plate, wherein the positive lead paste is made of the following raw materials in parts by weight: 90-100 parts of lead powder, 8-12 parts of sulfuric acid aqueous solution, 14-18 parts of deionized water, 0.5-1 part of sodium perborate and 0.15-0.2 part of graphene. The corrosion resistance of the grid is improved by modifying the grid alloy; the modification treatment of the lead paste can improve the bonding force between the lead paste and the grid and effectively inhibit sulfation of the negative electrode and prolong the service life of the storage battery. Meanwhile, the curing is divided into two stages and the temperature and humidity parameters are optimized so that the active substances in the lead paste are firmly combined with the grid and the discharge performance of the battery is improved.

Description

technical field [0001] The invention belongs to the technical field of storage battery pole plate processing, and in particular relates to a production process of a storage battery positive plate. Background technique [0002] As a power source that can store and discharge repeatedly, batteries are widely used in daily life because they are easy to use and can be charged and discharged repeatedly, replacing traditional dry batteries; the plates are an important part of lead-acid batteries. It plays the role of supporting the active material, serving as the carrier of the active material, and conducting the current, so that the current is evenly distributed on the active material. [0003] The positive plate of the lead-acid battery includes a grid and an active material coating coated on the grid, wherein the grid is not only a support for the active material, but also a conductor of current. Therefore, the quality of the grid and the active material have an important impac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/68H01M4/84H01M4/62H01M4/20H01M4/21
CPCH01M4/685H01M4/84H01M4/62H01M4/628H01M4/20H01M4/21Y02E60/10
Inventor 朱保义沈岑宽黄建新刘峰黄镔
Owner JIESHOU HUAYU POWER SUPPLY
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