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A positive electrode grid alloy for maintenance-free lead-acid batteries

A technology of lead-acid battery and positive plate, applied in the direction of electrode carrier/collector, etc., to achieve the effect of preventing floating, uniform distribution, and increasing strength

Active Publication Date: 2016-08-31
CAMEL GRP HUAZHONG BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the alloys prepared in the above literatures have their own advantages, they still need to be improved in terms of corrosion resistance, high strength, and uniform element distribution.

Method used

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  • A positive electrode grid alloy for maintenance-free lead-acid batteries

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A positive grid alloy for a maintenance-free lead-acid battery, comprising the following components in weight percentages:

[0038] Barium 0.02%,

[0039] Silver 0.002%,

[0040] Calcium 0.04%,

[0041] Tin 0.25%,

[0042] Lanthanum 0.02%,

[0043] lead balance;

[0044] According to the proportioning of above-mentioned grid alloy, make following preparation:

[0045] (1) Divide the lead into two parts, one part is melted at 410-440°C, and the other part is used; after the lead is melted, add tin; after it is completely melted, heat up to 1500-1600°C, and add calcium; After melting, stir evenly; when the temperature drops to 500-550°C, take it out of the furnace to obtain lead-tin-calcium alloy;

[0046] (2) Melt rare earth elements in a high-temperature furnace at 950°C. After complete melting, heat up to 1000-1100°C, then add silver, and stir evenly after it is completely melted; when it drops to 400-450°C, take it out of the furnace to obtain Silver rare earth...

Embodiment 2

[0050] A positive grid alloy for a maintenance-free lead-acid battery, comprising the following components in weight percentages:

[0051] Barium 0.05%,

[0052] Silver 0.003%,

[0053] Calcium 0.08%,

[0054] Tin 0.95%,

[0055] Praseodymium 0.02%,

[0056] Neodymium 0.04%,

[0057] lead balance;

[0058] According to the proportioning of above-mentioned grid alloy, make following preparation:

[0059] (1) Divide the lead into two parts, one part is melted at 410-440°C, and the other part is used; after the lead is melted, add tin; after it is completely melted, heat up to 1500-1600°C, and add calcium; After melting, stir evenly; when the temperature drops to 500-550°C, take it out of the furnace to obtain lead-tin-calcium alloy;

[0060] (2) Melt rare earth elements in a high-temperature furnace at 950°C. After complete melting, heat up to 1000-1100°C, then add silver, and stir evenly after it is completely melted; when it drops to 400-450°C, take it out of the furnace ...

Embodiment 3

[0064] A positive grid alloy for a maintenance-free lead-acid battery, comprising the following components in weight percentages:

[0065] Barium 0.05%,

[0066] Silver 0.003%,

[0067] Calcium 0.08%,

[0068] Tin 0.95%,

[0069] Praseodymium 0.04%,

[0070] Neodymium 0.02%,

[0071] lead balance;

[0072] According to the proportioning of above-mentioned grid alloy, make following preparation:

[0073] (1) Divide the lead into two parts, one part is melted at 410-440°C, and the other part is used; after the lead is melted, add tin; after it is completely melted, heat up to 1500-1600°C, and add calcium; After melting, stir evenly; when the temperature drops to 500-550°C, take it out of the furnace to obtain lead-tin-calcium alloy;

[0074] (2) Melt rare earth elements in a high-temperature furnace at 950°C. After complete melting, heat up to 1000-1100°C, then add silver, and stir evenly after it is completely melted; when it drops to 400-450°C, take it out of the furnac...

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Abstract

The invention provides positive electrode grid alloy for a maintenance-free lead-acid storage battery and a preparing method of positive electrode grid alloy. The alloy is prepared from, by weight, 0.02%-0.15% of barium, 0.002%-0.01% of silver, 0.04%-0.15% of calcium, 0.25%-1.80% of tin, 0.02%-0.20% of rare earth elements and the balance lead. The strength of the alloy is improved, the corrosion resistance of the alloy is improved, and accordingly the high-temperature floating life and the deep cycle life of the battery are prolonged.

Description

technical field [0001] The invention belongs to the field of lead-acid batteries, in particular to a positive electrode grid alloy for maintenance-free lead-acid batteries. Background technique [0002] Since the French G.Plante invented the lead-acid battery in 1859, it has a history of more than 100 years, during which it has experienced major changes and developments. With the deterioration of the environment and the continuous improvement of people's awareness of environmental protection, maintenance-free lead-acid batteries account for an increasing proportion of people's lives. Therefore, further improving and enhancing the performance of maintenance-free lead-acid batteries has become the focus of researchers and manufacturers, among which reducing the water loss of maintenance-free lead-acid batteries by improving the grid alloy composition is one of the research focuses. [0003] The grid material of lead-acid batteries initially uses pure lead as the positive and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C11/06C22C1/02H01M4/68
CPCY02E60/10
Inventor 张祖波张行祥史俊雷夏诗忠刘长来
Owner CAMEL GRP HUAZHONG BATTERY
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