Deep-cycle-resistant lead-acid storage battery cathode lead paste formula and preparation process thereof

A lead-acid battery, negative lead paste technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of poor deep discharge capacity, poor overcharge resistance, short cycle life, etc. The effect of strong overcharge capability and long cycle life

Active Publication Date: 2015-02-25
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 deep-cycle-resistant lead-acid battery negative electrode lead paste formula that improves the cycle life of the battery in order to solve the defects of poor deep discharge capacity, poor overcharge resistance and short cycle life of the existing lead-acid battery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of preparation technology of deep-cycle lead-acid storage battery negative electrode lead paste, described preparation technology comprises the following steps:

[0027] a) Add lead powder, short fiber, elm wood particles, acetylene black, humic acid, barium sulfate and sodium lignosulfonate into the paste machine according to the formula, and dry mix for 6 minutes; (see Table 1 for the formula)

[0028] b) Add silicon dioxide emulsion, polytetrafluoroethylene emulsion and deionized water of formula quantity while stirring in the pasting machine of step a), then continue to stir for 4min; Silicon dioxide emulsion, polytetrafluoroethylene emulsion and deionized water The ionized water is added within 1 min; the mass percentage concentration of the polytetrafluoroethylene emulsion is 15%, and the mass percentage concentration of the silicon dioxide emulsion is 10%;

[0029] c) Add the sulfuric acid with the density of 1.4g / cm3 to the paste mixing machine of step b)...

Embodiment 2

[0032] A kind of preparation technology of deep-cycle lead-acid storage battery negative electrode lead paste, described preparation technology comprises the following steps:

[0033] a) Add lead powder, short fiber, elm wood particles, acetylene black, humic acid, barium sulfate and sodium lignosulfonate into the paste mixing machine according to the formula, and dry mix for 7 minutes; (see Table 1 for the formula)

[0034] b) Add silicon dioxide emulsion, polytetrafluoroethylene emulsion and deionized water of formula amount while stirring in the pasting machine of step a), then continue to stir for 5min; Silicon dioxide emulsion, polytetrafluoroethylene emulsion and deionized water The ionized water was added within 2 minutes; the mass percentage concentration of the polytetrafluoroethylene emulsion was 55%, and the mass percentage concentration of the silicon dioxide emulsion was 30%;

[0035] c) Add the sulfuric acid with the density of 1.4g / cm3 to the paste mixing machin...

Embodiment 3

[0038] A kind of preparation technology of deep-cycle lead-acid storage battery negative electrode lead paste, described preparation technology comprises the following steps:

[0039] a) Add lead powder, short fiber, elm wood particles, acetylene black, humic acid, barium sulfate and sodium lignosulfonate into the paste mixing machine according to the formula, and dry mix for 8 minutes; (see Table 1 for the formula)

[0040] b) Add silicon dioxide emulsion, polytetrafluoroethylene emulsion and deionized water of formula amount while stirring in the pasting machine of step a), then continue to stir for 8min; Silicon dioxide emulsion, polytetrafluoroethylene emulsion and deionized water The ionized water was added within 3 minutes; the mass percentage concentration of the polytetrafluoroethylene emulsion was 85%, and the mass percentage concentration of the silicon dioxide emulsion was 50%;

[0041] c) Add the formula amount while stirring in the compound paste machine of step b...

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Abstract

The invention relates to a deep-cycle-resistant lead-acid storage battery cathode lead paste formula which comprises the following components by the weight percentage: 70-90% of a lead powder, 2-15% of sulfuric acid, 5-20% of water, 0.05-2% of short fibers, 0.2-0.5% of acetylene black, 0.2-0.5% of humic acid, 0.1-1.2% of barium sulfate, 0.1-0.4% of sodium ligninsulfonate, 0.05-0.3% of elm particles, 0.1-1.5% of a silica emulsion, and 0.1-10% of a polytetrafluoroethylene emulsion, wherein the particle size of the elm particles is 5-20 microns. After a storage battery is assembled from a polar plate prepared from a lead paste prepared by the formula and a preparation process, the storage battery has the advantages of strong deep discharge capability, strong overcharge resistant capability, and long cycle life.

Description

technical field [0001] The invention belongs to the technical field of lead-acid batteries, and relates to lead-acid battery negative lead paste, in particular to a deep-cycle-resistant lead-acid battery negative lead paste formula and a preparation process for improving battery cycle life. Background technique [0002] At present, the application mode of lead-acid batteries has changed from the conventional standby and low current and low power application mode to the high current and high power application mode. Commonly used valve-regulated sealed lead-acid batteries face the dilemma of poor deep discharge capability, poor overcharge resistance, and short cycle life. Common methods to improve their performance include: 1. Increase the thickness of the plate to improve electrode overcharge and overdischarge. 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. Reduc...

Claims

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Application Information

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IPC IPC(8): H01M4/57H01M4/62
CPCH01M4/57H01M4/621H01M4/628Y02E60/10
Inventor 祝皎皎赵文超马洪涛贡全富张余霞
Owner CHAOWEI POWER CO LTD
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