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Valve-regulated lead acid battery electrolyte and manufacturing method thereof

A lead-acid battery and a production method technology, applied in the direction of lead-acid battery, lead-acid battery construction, final product manufacturing, etc., can solve the problems of affecting oxygen, termination, water loss battery life, etc., to improve cycle life, internal resistance, etc. Small, lower battery usage effect

Inactive Publication Date: 2009-11-25
WUHAN INTEPOWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If these pores are blocked, it will affect the migration and recombination of oxygen precipitated from the positive electrode to the negative electrode, resulting in water loss and battery life termination

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Get 78 12V100Ah unformed valve-regulated lead-acid batteries, wherein 6 electrolytes do not add silica sol (called A group), and the other 72 add electrolyte of the present invention (called B group), then carry out battery formation, battery production After the completion, measure the battery capacity, qualified and ready to use. Group B batteries were divided into 12 groups according to the weight ratio of the electrolyte components, and tested separately, among them, 6 groups of batteries whose electrolyte did not contain anhydrous sodium sulfate component, and 6 groups of batteries whose electrolyte contained anhydrous sodium sulfate component , each group is 6 batteries. The weight ratio of specific components of battery electrolyte in group B is shown in the table below:

[0019] Component

sulfuric acid

Silica sol

anhydrous sodium sulfate (optional)

Group 1 Weight Ratio (Concentration Ratio)

14 (31%)

0.5 parts (12%)

0.09 ...

Embodiment 2

[0027] Get 78 12V100Ah unformed valve-regulated lead-acid batteries, wherein 6 electrolytes do not add silica sol (called A group), and the other 72 add electrolyte of the present invention (called B group), then carry out battery formation, battery production After the completion, measure the battery capacity, qualified and ready to use. Group B batteries were divided into 12 groups according to the weight ratio of the electrolyte components, and tested separately, among them, 6 groups of batteries whose electrolyte did not contain anhydrous sodium sulfate component, and 6 groups of batteries whose electrolyte contained anhydrous sodium sulfate component , each group is 6 batteries. The weight ratio of specific components of battery group B is shown in the table below:

[0028] Component

sulfuric acid

Silica sol

anhydrous sodium sulfate (optional)

Group 1 Weight Ratio (Concentration Ratio)

14 (31%)

1 serving (12%)

0.09 parts

Gr...

Embodiment 3

[0036] Get 78 12V100Ah unformed valve-regulated lead-acid batteries, wherein 6 electrolytes do not add silica sol (called A group), and the other 72 add electrolyte of the present invention (called B group), then carry out battery formation, battery production After the completion, measure the battery capacity, qualified and ready to use. Group B batteries were divided into 12 groups according to the weight ratio of the electrolyte components, and tested separately, among them, 6 groups of batteries whose electrolyte did not contain anhydrous sodium sulfate component, and 6 groups of batteries whose electrolyte contained anhydrous sodium sulfate component , each group is 6 batteries. The weight ratio of specific components of battery group B is shown in the table below:

[0037] Component

sulfuric acid

Silica sol

anhydrous sodium sulfate (optional)

Group 1 Weight Ratio (Concentration Ratio)

14 (31%)

2 servings (12%)

0.09 parts

G...

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PUM

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Abstract

The invention relates to the field of valve-regulated lead acid battery, more particularly to a valve-regulated lead acid battery electrolyte, differences thereof comprise that: components thereof comprise 14 parts of sulfuric acid and 0.5-3 parts of silica sol based on weight ratio, wherein, the sulfuric acid has the concentration of 30%-40%(Wt), the silica sol has the content of silicon dioxide of 10%-35%(Wt). A manufacturing method of the valve-regulated lead acid battery electrolyte comprises in sequence: the first step of: using deionized water and analytic reagent concentrated sulfuric acid to formulate sulfuric acid solution having the concentration of 30%-40%(Wt); the second step of: adding 0.5-3 parts of silica sol having the content of silicon dioxide of 10%-35%(Wt) into the well-formulated sulfuric acid solution, and after premixing, introducing the sulfuric acid solution into the valve-regulated lead acid battery. The valve-regulated lead acid battery to which the inventive valve-regulated lead acid battery electrolyte is applied has outstanding performances.

Description

technical field [0001] The invention relates to the field of valve-regulated lead-acid batteries, in particular to an electrolyte solution for valve-regulated lead-acid batteries. technical background [0002] In recent years, VRLA battery has developed into a widely used energy storage device. Valve-regulated lead-acid batteries are further divided into AGM (ultrafine glass fiber separator) valve-regulated lead-acid batteries and GEL (gel) valve-regulated lead-acid batteries. AGM valve-regulated lead-acid battery has the characteristics of small internal resistance, good initial performance and high-current discharge characteristics; GEL valve-regulated lead-acid battery has the characteristics of good deep cycle performance and small self-discharge. [0003] As we all know, AGM valve-regulated lead-acid batteries use sulfuric acid aqueous solution as the electrolyte, most of which exist in the glass fiber separator, and at the same time, about 10% of the pores in the sepa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/08H01M10/12
CPCY02E60/126Y02E60/10Y02P70/50
Inventor 张志坚
Owner WUHAN INTEPOWER CO LTD
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