Technology for manufacturing lead-acid battery pole plate

A lead-acid battery and manufacturing process technology, applied to the electrodes of lead-acid batteries, can solve the problems of short plate life and low battery capacity, and achieve the effect of reducing power generation costs and improving market competitiveness

Active Publication Date: 2011-02-09
CHAOWEI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a lead-acid battery pole plate manufacturing process, which c...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The manufacturing process of the lead-acid battery plate includes the following steps in sequence:

[0017] A. Mixing: In vacuum or inert gas or reducing gas environment, mix lead powder, carbon black powder and graphite powder evenly, the oxidation degree of described lead powder is lower than 5%, and the granularity of described lead powder is 30~ 800 mesh, the particle size of the carbon black powder is 100-3000 mesh, the particle size of the graphite powder is 20-600 mesh, the mass percentage of each component is 40% of lead powder, 25% of carbon black powder, and 35% of graphite powder ;

[0018] B. Compression: Compress the powder mixed in step A into a semi-finished electrode plate under a pressure condition of 100-1000 MPa;

[0019] C. Sintering: put the semi-finished polar plate pressed and formed in step B into the temperature condition of 140-450° C. and sinter for 0.5-5 hours to form a finished polar plate.

Embodiment 2

[0021] The manufacturing process of the lead-acid battery plate includes the following steps in sequence:

[0022] A. Mixing: In vacuum, inert gas or reducing gas environment, mix lead powder, carbon black powder and graphite powder evenly, the oxidation degree of described lead powder is lower than 5%, and the granularity of described lead powder is 30~ 800 mesh, the particle size of the carbon black powder is 100-3000 mesh, the particle size of the graphite powder is 20-600 mesh, the mass percentage of each component is 68% of lead powder, 13% of carbon black powder, and 19% of graphite powder ;

[0023] B. Compression: Compress the powder mixed in step A into a semi-finished electrode plate under a pressure condition of 100-1000 MPa;

[0024] C. Sintering: put the semi-finished polar plate pressed and formed in step B into a sintered finished polar plate at a temperature of 140-450°C.

Embodiment 3

[0026] The manufacturing process of the lead-acid battery plate includes the following steps in sequence:

[0027] A. Mixing: In vacuum, inert gas or reducing gas environment, mix lead powder, carbon black powder and graphite powder evenly, the oxidation degree of described lead powder is lower than 5%, and the granularity of described lead powder is 30~ 800 mesh, the particle size of the carbon black powder is 100-3000 mesh, the particle size of the graphite powder is 20-600 mesh, the mass percentage of each component is 97% of lead powder, 1% of carbon black powder, and 3% of graphite powder ;

[0028] B. Compression: Compress the powder mixed in step A into a semi-finished electrode plate under a pressure condition of 100-1000 MPa;

[0029] C. Sintering: put the semi-finished polar plate pressed and formed in step B into a sintered finished polar plate at a temperature of 140-450°C.

[0030] In the above three embodiments, if the mixing is performed under an inert gas env...

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Abstract

The invention discloses a technology for manufacturing a lead-acid battery pole plate, which comprises the following steps: A, mixing: mixing lead powder, carbon black powder and graphite powder evenly in the environment of vacuum or inert gases or reducing gases; B, compressing: carrying out compression molding on the mixed powder in step A to form a pole plate semi-finished product under the pressure condition of 100-1000MPa; and C, sintering: sintering the pole plate semi-finished product subject to compression modling in step B at the temperature of 140-450 DEG C for 0.5-5 hours to obtain a pole plate finished product. The invention has the advantages that after being subject to compression molding and sintering, substances for preparing the pole plates do not loose and drop in the recycling process, the service life of the battery is several times longer than that of the grid type plate, the carbon black on the sintered pole plate surface layer is oxidized in the charge-discharge cycle so as to leave larger actively porous lead, and the battery capacity of the lead-acid battery pole plate is higher than that of a formed type plant plate.

Description

technical field [0001] The invention relates to a manufacturing process of a lead-acid storage battery pole plate. Background technique [0002] A lead-acid battery consists of a positive plate, a negative plate, and a separator between the positive and negative plates. The substance that can release electricity by reacting with sulfuric acid is called active substance. According to the form of active substance and the way of forming active substance, the plates of lead-acid batteries are divided into three categories: paste type, tube type and formed type plate. [0003] The paste-coated plate is filled and coated with lead powder with an oxidation degree of 60-80%, sulfuric acid, water and paste on the grid, cured and dried to make a raw plate, and formed after charging and discharging in the electrolyte. A cooked plate that can release electricity; the lead powder that forms the active material of the tubular plate is the same as that of the paste plate, which is lead po...

Claims

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Application Information

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IPC IPC(8): H01M4/22H01M4/16
CPCY02E60/126Y02E60/10
Inventor 沈浩宇
Owner CHAOWEI POWER CO LTD
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