Intermittent sectional quick solidification method for cadmium-free internal formation storage battery

A rapid curing and segmented technology, applied in the direction of lead-acid battery electrodes, etc., can solve the problems of long drying and curing time of the plate, easy cracks on the plate, and rapid water evaporation, etc., to shorten the curing time, the method is effective, Practical and convenient effect

Active Publication Date: 2012-09-19
江苏超威电源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In this step, if the curing temperature is too low, the constant speed stage will be prolonged, but due to the reduced diffusion rate of oxygen and moisture, the oxidation rate of metal lead in the plate and the corrosion rate of the grid will also be slowed down, resulting in If the drying and curing time is too long, it is easy to produce tribasic lead sulfate (3PbO·PbSO 4 ·H 2 O), directly affects the quality and production efficiency of the product; but if the curing temperature is too high, it will not only cause the water to evaporate too fast, but also destroy the constant speed drying. Although the curing time can be shortened, the plate is prone to cracks, metal lead oxidation and plate Gate corrosion ends prematurely, resulting in active material loosening
At the same time, when the curing temperature is too high, the metal lead will be oxidized, and the temperature of the plate is too high due to the large amount of oxidation heat, resulting in tetrabasic lead sulfate (4PbO·PbSO 4 ·H 2 O) generation, too much tetrabasic lead sulfate will affect the quality of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1, put the paste-coated wet plate in a dedicated curing room. The curing steps are: first stage temperature 80-85°C, humidity above 85%, curing time 1.5-2.2 hours, stop for 0.5 hours. In the second stage, the temperature is 75-80°C, the humidity is above 90%, the curing time is 1.5-2.2 hours, and the curing time is 0.5 hours. The third stage is temperature 70~75℃, humidity over 95%, curing time 1.5~2.2 hours. In the fourth section, the temperature is 65°C, the humidity is above 98%, and the curing time is 3.5 to 4.2 hours. The fifth stage is temperature 60℃, humidity above 98%, curing time 1.5-1.8 hours. The temperature of the sixth stage is 60°C, the humidity is 80%, and the curing time is 2.2 to 3.2 hours. The seventh stage is a temperature of 60°C, a humidity of 60%, and a curing time of 2.2 to 3.2 hours. Complete curing.

Embodiment 2

[0029] Example 2, put the paste-coated wet plate in a dedicated curing room. The curing steps are as follows: the first stage temperature is 84°C, the humidity is above 85%, the curing time is 1.2 hours, and the curing time is 0.5 hours. In the second stage, the temperature is 80°C, the humidity is above 90%, the curing time is 1 hour, and the curing time is 0.5 hours. 2小时。 The third section is a temperature of 74 ° C, a humidity of 95% or more, and a curing time of 1.2 hours. In the fourth section, the temperature is 65°C, the humidity is above 98%, and the curing time is 4.8 hours. The fifth stage is a temperature of 60°C, a humidity of 98% or more, and a curing time of 2 hours. The temperature of the sixth stage is 60°C, the humidity is 80%, and the curing time is 4 hours. The seventh stage is a temperature of 60°C, a humidity of 60%, and a curing time of 4 hours. Complete curing.

Embodiment 3

[0030] Example 3, put the paste-coated wet plate in a dedicated curing room, the curing steps are: first stage temperature 80°C, humidity above 85%, curing time 3 hours, stop for 0.5 hours. In the second stage, the temperature is 75°C, the humidity is above 90%, the curing time is 2.5 hours, and the curing time is 0.5 hours. The third stage is a temperature of 71°C, a humidity of over 95%, and a curing time of 2.5 hours. In the fourth section, the temperature is 65°C, the humidity is above 98%, and the curing time is 3 hours. The fifth stage is a temperature of 60°C, a humidity of 98% or more, and a curing time of 1.5 hours. The temperature of the sixth stage is 60°C, the humidity is 80%, and the curing time is 4 hours. The seventh stage is a temperature of 60°C, a humidity of 60%, and a curing time of 2 hours. Complete curing.

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Abstract

The invention belongs to an intermittent sectional quick solidification method for a cadmium-free internal formation storage battery. An intermittent sectional high-temperature and high-humidity solidification method, a short-time high-temperature high-humidity seven-stage solidification method and a process clearance pause method are combined, and formation of a great amount of tetrabasic lead sulfate (4PbO.PbSO4.H2O) is avoided, so a mixture of tribasic lead sulfate and tetrabasic lead sulfate is easily formed in a pole plate, the tribasic lead sulfate is a major part in the pole plate, the cycle life of the storage battery can be prolonged, and the primary discharge capacity can be improved. The sectional high-temperature and high-humidity solidification method is employed, and the intermittent sectional quick solidification method is effective, practical and convenient and has the advantages that solidification time is greatly shortened, energy is saved, consumption is reduced, the quality of products is improved, and the cycle life of the storage battery is long.

Description

[0001] technical field [0002] The invention belongs to a cadmium-free internalization forming accumulator intermittent segmented rapid curing method. Background technique [0003] There is a step in the manufacturing process of cadmium-free internalized battery plates. Curing is to put the paste-coated wet plates in a special curing room, and use them within a specified time under certain temperature and humidity conditions. The residual free lead in the lead paste is further oxidized into lead oxide and basic lead sulfate. At the same time, the surface of the plate grid is corroded, and lead oxide is formed on the surface of the grid to combine with the lead oxide in the lead paste, thereby improving the grid. Binding power with active substances. The quality of the curing process directly affects the performance of the battery, especially the cycle life of the battery. [0004] In this step, if the curing temperature is too low, the constant speed stage will be prol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/21
CPCY02E60/126Y02E60/10
Inventor 母建平
Owner 江苏超威电源有限公司
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