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Lead-acid accumulator grid alloy additive and preparation method thereof

A lead-acid battery and additive technology, applied in the direction of electrode carrier/current collector, can solve the problems of pollution and cadmium damage to the environment, and achieve the effects of increasing the occupation, prolonging the service life, and improving the casting performance and corrosion resistance.

Inactive Publication Date: 2014-05-21
GUANGXI SHAHU STORAGE BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although lead-antimony-cadmium alloys are superior to other alloys, cadmium is harmful to the human body and pollutes the environment, and its use is gradually banned in the battery industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Prepare 1000kg lead-acid battery grid alloy according to the following proportions by weight:

[0021] Lead (1# electrolytic lead) 940kg

[0022] Antimony (1# antimony) 20kg

[0023] Tin (1# tin) 8kg

[0024] Selenium (lead-selenium alloy, selenium content 5%) 12kg

[0025] Copper, sulfur (lead-copper-sulfur alloy, copper content 30%, sulfur content 5%) 2.5kg

[0026] (2) Alloys containing selenium, copper, and sulfur are mixed with lead to make lead-selenium-copper-sulfur alloy for later use;

[0027] (3) Put the lead into a high-temperature furnace to heat up and melt;

[0028] (4) After the lead liquid reaches a temperature of 600°C~650°C, add antimony and the pre-prepared lead-selenium-copper-sulfur alloy in turn, and stir under heating. The stirring time is 30-40 minutes, and the stirring speed is 500-1400 rpm / minute;

[0029] (5) Then add tin and carry out stirring treatment. The stirring time is 30-40 minutes, the stirring speed is 500-1400 rpm, and fi...

Embodiment 2

[0031] (1) Prepare 1000kg lead-acid battery grid alloy according to the following proportions by weight:

[0032] Lead (1# electrolytic lead) 950kg

[0033] Antimony (1# antimony) 40kg

[0034] Tin (1# tin) 12kg

[0035] Selenium (lead-selenium alloy, selenium content 5%) 13kg

[0036] Copper, sulfur (lead-copper-sulfur alloy, copper content 30%, sulfur content 5%) 2.8kg

[0037] (2) Alloys containing selenium, copper, and sulfur are mixed with lead to make lead-selenium-copper-sulfur alloy for later use;

[0038] (3) Put the lead into a high-temperature furnace to heat up and melt;

[0039] (4) After the lead liquid reaches a temperature of 600°C~650°C, add antimony and the pre-prepared lead-selenium-copper-sulfur alloy in turn, and stir under heating. The stirring time is 30-40 minutes, and the stirring speed is 500-1400 rpm / minute;

[0040] (5) Then add tin and carry out stirring treatment. The stirring time is 30-40 minutes, the stirring speed is 500-1400 rpm, and f...

Embodiment 3

[0042] (1) Prepare 1000kg lead-acid battery grid alloy according to the following proportions by weight:

[0043] Lead (1# electrolytic lead) 960kg

[0044] Antimony (1# antimony) 30kg

[0045] Tin (1# tin) 10kg

[0046] Selenium (lead-selenium alloy, selenium content 5%) 14kg

[0047] Copper, sulfur (lead-copper-sulfur alloy, copper content 30%, sulfur content 5%) 2.8kg

[0048] (2) Alloys containing selenium, copper, and sulfur are mixed with lead to make lead-selenium-copper-sulfur alloy for later use;

[0049] (3) Put the lead into a high-temperature furnace to heat up and melt;

[0050] (4) After the lead liquid reaches a temperature of 600°C~650°C, add antimony and the pre-prepared lead-selenium-copper-sulfur alloy in turn, and stir under heating. The stirring time is 30-40 minutes, and the stirring speed is 500-1400 rpm / minute;

[0051] (5) Then add tin and carry out stirring treatment. The stirring time is 30-40 minutes, the stirring speed is 500-1400 rpm, and f...

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Abstract

The invention discloses a lead-acid accumulator grid alloy additive and a preparation method thereof. The lead-acid accumulator grid alloy additive comprises the following raw materials in parts by weight: 940-960 parts of lead, 20-40 parts of antimony, 5-12 parts of tin, 0.55-0.65 part of selenium, 0.7-0.9 part of copper and 0.1-0.2 part of sulfur. The preparation method of the lead-acid accumulator grid alloy additive comprises the steps of preparing an alloy which contains selenium, copper and sulfur elements and lead into a lead-selenium-copper-sulfur alloy for later use; then placing the lead into a high-temperature furnace for heating and melting, and then adding all additives in batches; carrying out stirring treatment, then removing residues, and casting an ingot to obtain a lead-acid accumulator grid alloy; melting to obtain the lead-acid accumulator grid alloy additive. The lead-acid accumulator grid alloy additive disclosed by the invention has the advantages of good flowability and uniformity, convenience for accumulator grid casting and reasonability in alloy component collocation; an accumulator grid poured by using the lead-acid accumulator grid alloy additive has good corrosion resistance and tensile strength and prolongs the service life of a grid in the charge and discharge circulation of the accumulator.

Description

technical field [0001] The invention relates to a lead-acid battery grid alloy additive, in particular to a lead-acid battery grid alloy additive and a preparation method thereof. [0002] Background technique [0003] At present, lead-acid battery grid alloys generally use lead-antimony-cadmium alloys, lead-antimony-tin alloys, lead-calcium-tin-alloys, and lead-antimony alloys. Although lead-antimony-cadmium alloys are superior to other alloys, cadmium is harmful to the human body and pollutes the environment, and its use is gradually banned in the storage battery industry. The life of the battery is mainly composed of grids and active materials, and the performance of the grid directly affects the life of the battery. Therefore, improving the composition of the lead alloy can effectively resist the oxidation and corrosion of the grid and increase the mechanical strength, prolonging the life of the battery. The basic requirement of battery manufacturing is to make the ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C11/10C22C1/03H01M4/66H01M4/73
CPCY02E60/10
Inventor 毛金息冯因飞
Owner GUANGXI SHAHU STORAGE BATTERY
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