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Preparation method of vale control lead-acid accumulator green plate without crackles

A technology of lead-acid batteries and raw plates, applied in the direction of lead-acid battery electrodes, etc., can solve the problems of increased production costs, little effect, increased curing time, etc., to improve the qualified rate of sub-plates, reduce production costs, and considerable economy benefit effect

Active Publication Date: 2009-10-28
FENGFAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the grid of valve-regulated lead-acid batteries uses lead-calcium alloy, which has low hardness and is more prone to deformation during the manufacturing process of raw plates. After rapid drying, curing and drying processes, cracks will occur, especially the negative plate is particularly serious. More cracks, deeper
The generation of cracks will reduce the adhesion of the active material, and it is very easy to cause the living material to become crisp and fall off when the board is divided, resulting in a large number of waste products, resulting in a greatly increased production cost, and the occurrence of cracks has a high life expectancy. The acid battery has a great influence, it will seriously reduce the service life and output capacity of the battery
At present, the solution to this problem is to increase the curing time, reduce the curing and drying temperature, and spray low density (1.100g / cm 3 ) below dilute sulfuric acid and other means, but the effect is not great, and the crack problem of the raw plate has not been fundamentally solved

Method used

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  • Preparation method of vale control lead-acid accumulator green plate without crackles
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  • Preparation method of vale control lead-acid accumulator green plate without crackles

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Effect test

Embodiment 1

[0018] Embodiment 1: the lead oxide content of the lead powder used in the paste is 65%, and the apparent density of the paste is 4.10g / cm 3 , the paste after the green plate adopts 1.150g / cm 3 The dilute sulfuric acid is subjected to rolling acid treatment, and the plate enters the curing and drying room within 10 minutes after rolling and acid treatment. The curing and drying temperature is controlled at 45°C and the humidity is controlled at 85%.

Embodiment 2

[0019] Embodiment 2: the lead oxide content of the lead powder used in the paste is 75%, and the apparent density of the paste is 4.30g / cm 3 , the paste after the green plate adopts 1.150g / cm 3 The dilute sulfuric acid is subjected to rolling acid treatment, and the plate enters the curing and drying room within 10 minutes after rolling and acid treatment. The curing and drying temperature is controlled at 50°C and the humidity is controlled at 90%.

Embodiment 3

[0020] Embodiment 3: the lead oxide content of the lead powder used in the paste is 70%, and the apparent density of the paste is 4.50g / cm 3 , the paste after the green plate adopts 1.150g / cm 3 The dilute sulfuric acid is subjected to rolling acid treatment, and the plate enters the curing and drying room within 10 minutes after rolling and acid treatment. The curing and drying temperature is controlled at 40°C and the humidity is controlled at 95%.

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Abstract

The invention discloses a preparation method of a vale control lead-acid accumulator green plate without crackles, for the purpose of removing crackles of plates. The improvement of the invention is characterized in that: a pasted green plate is processed by rolling and acid treatment, in which dilute sulphuric acid of 1.150 g / cm is sprinkled on a compression roller; the green plate is rolled under the compression roller; and the dilute sulphuric acid is attached uniformly to the green plate. Relatively high-density dilute sulphuric acid is used for sprinkling on the green plate by rolling, which leads to thicker lead sulfate coating; water loss of the plate is decreased due to quick drying; uncombined lead existing as active substance during solidifying and drying process reacts sufficiently with oxygen, thus producing better solidifying effect and enhancing the bonding force between the active substance and a slab lattice. The vale control lead-acid accumulator green plate made by the method has smooth plate surface without crackles. Therefore, the quality of the plate is significantly improved.

Description

technical field [0001] The invention relates to a method for preparing accumulator parts, in particular to a method for preparing an accumulator raw plate, and belongs to the technical field of accumulators. Background technique [0002] With the rapid development of the automobile industry, the performance requirements of lead-acid batteries are getting higher and higher. As a high-end product of lead-acid battery, valve-regulated sealed battery has been used and researched in the past 20 years. Its actual performance, stability, life and other characteristics have made great progress, and its application fields are more extensive. The raw plate is an important component of the battery, and its quality is directly related to important indicators such as the capacity and life of the battery, and plays a decisive role in the battery. At present, the grid of valve-regulated lead-acid batteries uses lead-calcium alloy, which has low hardness and is more prone to deformation du...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/20
CPCY02E60/126Y02E60/10
Inventor 刘建楼牛冀辉
Owner FENGFAN
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