Solidifying and drying method for raw plate production of lead acid batteries

A lead-acid battery, curing and drying technology, applied in lead-acid battery electrodes, drying solid materials, heating to dry solid materials, etc., can solve problems such as unfavorable metal lead oxidation, waste of pure water energy, large wind speed and air volume, etc. The effect of enhancing market competitiveness, saving pure water and reducing production costs

Active Publication Date: 2007-12-05
FENGFAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing curing and drying process, under the control conditions of the existing process, the speed of the fan is always at the maximum, and the wind speed and air volume are at the maximum, resulting in excessive water loss, which requires equipment to add more water
This is not conducive to the oxidation of metal lead, but also wastes a lot of pure water energy, causing certain economic losses

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1: The curing time is 20 hours, the frequency conversion of the motor in the pre-drying stage is adjusted to 65%, the wind speed is 3-5m / s, the temperature is set at 37°C and raised to 65°C in 10h, and the humidity is set at 20%. In the post-drying stage, the frequency conversion of the motor is adjusted to 100%, the wind speed is 5-7m / s, the temperature is set at 65°C and rises to 85°C in 4 hours, and the humidity is set at 10%. After sampling and testing, the free lead content, degree of dryness, and strength of the green board all meet the technical requirements.

[0014] The specific test results are shown in the table below:

[0015] Test items

[0016] Test data

Embodiment 2

[0017] Example 2: The curing time is 30 hours, the frequency conversion of the motor in the pre-drying stage is adjusted to 65%, the wind speed is 3-5m / s, the temperature is set at 37°C and raised to 65°C in 5h, and the humidity is set at 20%. In the post-drying stage, the frequency conversion of the motor is adjusted to 100%, the wind speed is 5-7m / s, the temperature is set at 65°C and rises to 85°C in 10 hours, and the humidity is set at 10%. After sampling and testing, the free lead content, degree of dryness, strength of green board and average weight of a single piece of green board all meet the technical requirements.

[0018] The specific test results are shown in the table below:

[0019] Test items

Embodiment 3

[0020] Example 3: The curing time is 30 hours, the frequency conversion of the motor in the pre-drying stage is adjusted to 65%, the wind speed is 3-5m / s, the temperature is set at 37°C and raised to 65°C in 8h, and the humidity is set at 20%. In the post-drying stage, the frequency conversion of the motor is adjusted to 100%, the wind speed is 5-7m / s, the temperature is set at 65°C and rises to 85°C in 5 hours, and the humidity is set at 10%. After sampling and testing, the free lead content, degree of dryness, strength of green board and average weight of a single piece of green board all meet the technical requirements.

[0021] The specific test results are shown in the table below:

[0022] Test items

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PUM

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Abstract

The invention relates to a solidify-dry method which used in the lead-acid battery living-board manufacture, belongs to the accumulator cell technology area, used in solving the parameter optimization question of solidifies drying process. Its technical program is, puts the fresh board which wait the solidification dry to the solidify-drying room, starts the air blower and injects the dry wind, after the improvement, in the solidification stage, maintains the wind speed is 1-3m/s, the temperature hypothesis is 37 degrees, the humidity is bigger than 90%, the hardening time is 20-30 hours; the dry working procedure divides into before and after two stages, the before dry stage, maintains the wind speed is 3-5m/s, the temperature is 37-65 degrees, the humidity is not more than 20%, drying time is 10-20 hours; the after dry stage, maintains the wind speed is 5-7m/s, the temperature is 65-85 degrees, the humidity is not more than 20%, drying time is 2-20 hours. The invention can increased the hardness degree and the mechanical strength of the fresh board, the greatly reduced the paper abscission after drying, enhanced the processing quality of the fresh board, reduced the energy consumption and the used solidification fresh water amount, also strengthened market competitiveness of net battery.

Description

technical field [0001] The invention relates to a raw board solidification and drying method used in the production of lead-acid storage batteries, which belongs to the technical field of storage batteries. Background technique [0002] Green plate curing and drying process is an important process in the production of lead-acid batteries. Its function is to continue to oxidize the lead in the green plate, reduce the free lead content in the green plate; increase the hardness and mechanical strength of the green plate; form basic sulfuric acid Lead; the surface of the grid is corroded and oxidized into lead oxide, which enhances the bonding force between the grid and the active material. Green board curing requires a high-humidity environment. In a high-humidity environment, the water in the lead paste acts as a catalyst to promote the oxidation of metallic lead in the active material. When the moisture content in the lead paste is 7-8.5%, the oxidation of lead The highest r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/16H01M4/21H01M4/23F26B3/02
CPCY02E60/126Y02E60/10
Inventor 董朝晖
Owner FENGFAN
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