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A kind of preparation method of long-life lead-acid battery positive plate

A lead-acid battery, positive plate technology, applied to lead-acid battery electrodes and other directions, can solve the problems of short service life, softening and falling off of positive lead paste, etc., and achieves the effect of long service life, large initial capacity, and guaranteed stability.

Active Publication Date: 2019-01-04
陕西凌云蓄电池有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for preparing the positive plate of a long-life lead-acid battery, which solves the problem that the existing lead-acid battery has a short service life due to the softening and falling off of the positive electrode paste

Method used

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  • A kind of preparation method of long-life lead-acid battery positive plate
  • A kind of preparation method of long-life lead-acid battery positive plate

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Experimental program
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Effect test

Embodiment 1

[0029] In this embodiment, the lead oxide content is 75% and the tap density is 2.5g / cm. 3 100kg of lead powder for battery production, sodium perborate monohydrate (NaBO 3 ·H 2 0) 0.1kg, 0.08kg of special polyester staple fiber for battery, 1.0kg of ultrafine tetrabasic lead sulfate additive with average particle size of 2 microns, added in the paste machine and stirred and mixed for 2min; added 9kg of pure water, stirred and oxidized for 10min. Add density of 1.40g / cm during stirring 3 H 2 SO 4 The aqueous solution is 14kg, the time of the addition process is controlled at 10min, and the temperature of the pre-mixture of the lead paste during the addition process is controlled below 65°C. Continue stirring until the temperature drops to 53°C, stop stirring, and complete the paste to obtain lead paste; then fill the lead paste on the grid to make an uncured positive plate; finally, send the uncured positive plate into the In the curing chamber, curing is performed in the...

Embodiment 2

[0033] In this embodiment, the lead oxide content is 80% and the tap density is 2.2g / cm. 3 100kg of lead powder for battery production, sodium perborate tetrahydrate (NaBO 3 ·4H 2 0) 0.4kg, 0.1kg of special polyester staple fiber for battery, 1.0kg of ultrafine tetrabasic lead sulfate additive with an average particle size of 4 microns, add in the paste machine and stir and mix for 1min; add 8kg of pure water, stir and oxidize for 15min. Add density of 1.40g / cm during stirring 3 H 2 SO 4 The aqueous solution is 16kg, the time of the addition process is controlled at 12min, and the temperature of the addition process is controlled below 65°C. Continue stirring until the temperature drops to 50°C, stop stirring, and complete the paste to obtain lead paste; then fill the lead paste on the grid to make an uncured positive plate; finally, send the uncured positive plate into the In the curing chamber, curing is performed in the following four stages in sequence:

[0034]

...

Embodiment 3

[0038] In this embodiment, the lead oxide content is 85% and the tap density is 2.7g / cm. 3 100kg of lead powder for battery production, sodium perborate tetrahydrate (NaBO 3 ·4H 2 0) 0.5kg, 0.1kg of special polyester staple fiber for storage battery, 1.0kg of ultrafine tetrabasic lead sulfate additive with an average particle size of 5 microns, added and stirred and mixed in the paste machine for 1min; added 7kg of pure water, stirred and oxidized for 20min. Add density of 1.40g / cm during stirring 3 H 2 SO 4 The aqueous solution is 18kg, the time of the addition process is controlled at 15min, and the temperature of the addition process is controlled below 65°C. Continue stirring until the temperature drops to 47 °C, stop stirring, and complete the paste to obtain lead paste; then fill the lead paste on the grid to make an uncured positive plate; finally, send the uncured positive plate into the In the curing chamber, curing is performed in the following four stages in se...

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Abstract

The invention discloses a fabrication method for a long-service lifetime positive plate of a lead-acid storage battery. The fabrication method comprises the following steps of separately weighing and stirring lead powder for production of the storage battery, sodium perborate, polyester short fiber special for the storage battery and a superfine tetrabasic lead sulfate additive; adding pure water, performing stirring and oxidizing, and adding a sulfuric acid aqueous solution during the stirring and oxidizing process; continuously stirring and stopping stirring until a stirring temperature is lower than 47-53 DEG C to obtain lead paste; filling the lead paste on a grid to fabricate a non-cured positive plate; and introducing the non-cured positive plate in a curing chamber for curing to obtain the positive plate. The fabrication method for the long-service lifetime positive plate of the lead-acid storage battery is stable in fabrication process, the curing time of the plate is shortened, the fabricated positive plate lead paste is high in content of the tetrabasic lead sulfate, small in crystalline particle and uniform in granularity, and thus, the storage battery has the advantages of high charging formation efficiency, large initial capacity, long service lifetime and high storage battery consistency.

Description

technical field [0001] The invention belongs to the technical field of battery material preparation, and in particular relates to a preparation method of a positive plate of a long-life lead-acid battery. Background technique [0002] The battery is mainly composed of a battery cell, a positive plate, a negative plate, a separator and an electrolyte. During the use of lead-acid batteries, there is a problem that the cycle life of the battery is short due to the softening and falling off of the positive lead paste. At present, the content of tetrabasic lead sulfate in the positive electrode lead paste is increased by adopting conventional high temperature (above 72°C) curing, modified high temperature curing and adding ultra-fine tetrabasic lead sulfate additives to the lead paste, thereby preventing the positive electrode The softening of the lead paste falls off. The crystal size of tetrabasic lead sulfate in the positive plate prepared by conventional high temperature (a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/20H01M4/21
CPCH01M4/20H01M4/21Y02E60/10
Inventor 孙言行张文欢杨广福
Owner 陕西凌云蓄电池有限公司
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