Preparation method of lead plaster for negative plate of lead-acid battery

A lead-acid battery, negative plate technology, applied in lead-acid batteries, lead-acid battery construction, battery electrodes, etc., can solve the problems of short cycle life, poor overcharge resistance, poor deep discharge capacity, etc., and achieve long cycle life. , The effect of strong overcharge resistance and deep discharge ability

Inactive Publication Date: 2015-09-30
周国贞
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Problems solved by technology

[0002] At present, the application mode of lead-acid batteries has changed from conventional backup and low current and low power application methods to high current and high power application methods. Commonly used valve-regulated sealed lead-acid batteries face poor deep discharge capacity and overcharge resistance. The common methods to improve its performance are: 1. Increase the thickness of the electrode to improve the overcharge and overdischarge ability of the electrode, but there are shortcomings of high production control quality cost and low efficiency; 2. Add soluble additives And improve the specific surface of the battery in the early stage, but this method cannot continue to maintain the battery capacity; 3. Reduce the concentration of the electrolyte, but there is a disadvantage of low utilization of active materials

Method used

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Embodiment

[0010] Lead paste formula, the weight percentage of the ingredients is: 140kg of lead powder, 0.08kg of liquid paraffin, 0.60kg of sodium lignosulfonate, 0.45kg of acetylene black, 1.20kg of strontium sulfate, 14000g of deionized water, and the concentration is 1.80g / cm 3 1. The temperature is 7000ml of sulfuric acid at 25°C.

[0011] A preparation method of lead paste for lead-acid battery negative plate: mix the prepared lead powder, liquid paraffin, sodium lignin sulfonate, acetylene black, and strontium sulfate, stir at a constant speed for 12 minutes; add deionized powder at a uniform speed within 2 minutes water, and continue to stir at a constant speed for 10 minutes; then add the concentration of 1.8g / cm 3 1. Sulfuric acid at a temperature of 25°C, continue to stir for no less than 10 minutes until uniform, and control the temperature within 60°C throughout the process. Finally, fine-tune with deionized water to control the density of the lead paste before discharging...

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Abstract

The invention discloses a preparation method of lead plaster for a negative plate of a lead-acid battery. The lead plaster is prepared from the following materials: 120-150kg of lead powder, 0.05-0.09kg of liquid paraffin, 0.30-0.60kg of sodium lignosulfonate, 0.20-0.60kg of acetylene black, 0.80-1.20kg of strontium sulfate, 13000-14500g of deionized water, and 6000-7000ml of 1.70-1.90g / cm<3> sulfuric acid with the temperature of 25 DEG C. By virtue of the scientific processing method, the lead plaster has the advantages of high deep discharge capacity, high overcharge resistance and long service life.

Description

technical field [0001] The invention belongs to the technical field of accumulators, and in particular relates to a method for preparing a lead paste for a negative plate of a lead-acid accumulator. Background technique [0002] At present, the application mode of lead-acid batteries has changed from conventional backup and low current and low power application methods to high current and high power application methods. Commonly used valve-regulated sealed lead-acid batteries face poor deep discharge capacity and overcharge resistance. The common methods to improve its performance are: 1. Increase the thickness of the electrode to improve the overcharge and overdischarge ability of the electrode, but there are shortcomings of high production control quality cost and low efficiency; 2. Add soluble additives And improve the specific surface of the battery in the early stage, but this method cannot continue to maintain the battery capacity; 3, reduce the concentration of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/57
CPCH01M4/57H01M10/12Y02E60/10
Inventor 周国贞
Owner 周国贞
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