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Positive electrode and paste process

A positive electrode and process technology, applied to battery electrodes, lead-acid battery electrodes, structural parts, etc., can solve the problems of large differences in the acid absorption value and porosity of the plates, and achieve the effect of increasing the acid absorption value and increasing the service life

Active Publication Date: 2018-11-02
济源市万洋绿色能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The acid content of the battery is mainly composed of the acid absorption value of the separator and the plate. At present, the AGM glass fiber cotton separator is commonly used in the lead-acid battery, and the difference in the acid content is not large. Differences in technology and paste formulations lead to large differences in the acid absorption value and porosity of the plates

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0015] The positive electrode and paste process includes the following steps: (1) dry stirring: mixing raw materials with parts by weight of 1039.2-1076 and stirring for 5-7 minutes; (2) wet stirring: adding pure water with parts by weight of 112.2-132.6, and continuing to stir 4-5min; (3) Add acid: add 90.5-91.0 parts by weight, density is 1.4g / cm 3 (4) Water cooling: when the paste temperature is 55-58°C, start circulating water to cool down; (5) Air cooling: when the paste temperature is between 65-75°C (6) Paste: the stirring time after adding acid is greater than or equal to 7min, the temperature of paste is less than or equal to 48℃, and the density of lead paste is 4.4-4.5g / cm 3 .

[0016] The raw materials in the step (1) are composed of the following components in parts by weight: 990-1010 parts of lead powder, 4.7-5.0 parts of additives, 1.4-2 parts of lead tetroxide, 20-24 parts of raw powder, leaching acid 8-10 parts of powder, 15-25 parts of solid modified silic...

Embodiment 2

[0022] The positive electrode and paste process includes the following steps: (1) dry stirring: mix and stir 1039.2 parts by weight of raw materials for 5 minutes; (2) wet stirring: add 112.2 parts by weight of pure water, and continue stirring for 4 minutes; (3) add Acid: The added weight is 90.5, and the density is 1.4g / cm 3 (4) Water cooling: when the paste temperature is 55°C, start circulating water to cool down; (5) Air cooling: when the paste temperature is 65°C, start air cooling; ( 6) Paste out: the stirring time after adding acid is equal to 7min, the paste out temperature is equal to 43℃, and the lead paste density is 4.4g / cm. 3 .

[0023] The raw materials in the step (1) are composed of the following components by weight: 990 parts of lead powder, 4.7 parts of additives, 1.4 parts of lead tetroxide, 20 parts of raw powder, 8 parts of acid powder, solid modified two parts. 15 parts of silicon oxide.

[0024] The particle size of the solid modified silica is 9 na...

Embodiment 3

[0029] The positive electrode and paste process includes the following steps: (1) Dry stirring: mix 1076 parts by weight of raw materials and stir for 7 minutes; (2) Wet stirring: add 132.6 parts by weight of pure water, and continue stirring for 5 minutes; (3) add Acid: the added weight is 91.0, and the density is 1.4g / cm 3 (4) Water cooling: when the paste temperature is 58°C, start circulating water to cool down; (5) Air cooling: when the paste temperature is between 75°C, start air cooling ; (6) Paste: the stirring time after adding acid is equal to 17min, the temperature of paste is equal to 48°C, and the density of lead paste is 4.5g / cm. 3 .

[0030] The raw materials in the step (1) are composed of the following components in parts by weight: 1010 parts of lead powder, 5.0 parts of additives, 2 parts of lead tetroxide, 24 parts of raw powder, 10 parts of acid powder, solid modified two parts. 25 parts of silicon oxide.

[0031] The particle size of the solid modified...

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Abstract

The invention provides a positive paste mixing technology, and relates to the technical field of storage batteries. The positive paste mixing technology comprises the following steps of (1) dry stirring, namely mixing and stirring raw materials for 5-7 minutes; (2) wet stirring, adding pure water and further stirring for 4-5 minutes; (3) acid adding, adding a sulfuric acid and continuously stirring; (4) water cooling, when the temperature of paste is 55-58 DEG C, starting circulating water cooling; (5) air cooling, when the temperature of the paste is 65-75 DEG C, starting air cooling; and (6) paste discharging, wherein the stirring time after acid adding is greater than or equal to 7 minutes, the temperature of the discharged paste is smaller than or equal to 48 DEG C and the density of lead paste when discharged is 4.4-4.5g / cm<3>. The invention provides the positive paste mixing technology. An acid absorption value of a positive electrode generated by the technology is increased; and the positive electrode is not easily softened, so that the service lifetime of the lead-acid storage battery is prolonged.

Description

technical field [0001] The present invention relates to the technical field of storage batteries, in particular to a positive electrode and a paste process. Background technique [0002] At present, the life of lead-acid batteries is generally only 350 deep cycles or about 15-18 months. In addition to manufacturing defects, most of the battery failures are caused by the softening of the plates. As for the softening of the plate, the market return caused by this reason is still the first major item in the long-term use of lead-acid batteries. Many research teams are studying the failure mode and improvement methods of this problem, but it has been generally recognized. of no. [0003] After a lot of anatomical analysis, our company believes that the acid content of the battery is one of the reasons that has a great influence on the softening of the front plate. The acid content of the battery is mainly composed of the acid absorption value of the separator and the electrode...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/16H01M4/62
CPCH01M4/16H01M4/624Y02E60/10
Inventor 张腾薛卫杰黄华侯慧敏
Owner 济源市万洋绿色能源有限公司