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High performance battery plate grid alloy

A battery plate and alloy technology, applied in the direction of electrode carrier/current collector, etc., can solve the problems of uneven cadmium composition, agglomerate frame segregation, and alloy corrosion resistance decline.

Inactive Publication Date: 2006-03-29
上海飞轮有色冶炼厂 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the use of lead-cadmium-antimony alloy, when the cadmium content in the grid alloy is in the range of 1.0%-2.0%, although the strength of the grid is increased, the brittleness and hardness of the alloy are also increased, and when the cadmium content in the alloy When it is greater than 1.5%, there will be agglomerated frame-shaped segregation, uneven cadmium composition, and local corrosion resistance of the alloy, which will affect the use effect of the alloy to a certain extent.

Method used

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Experimental program
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Embodiment Construction

[0019] The present invention is further described below with embodiment again

[0020] Lead Pb

margin

margin

Cadmium Cd

1.60-1.80

1.60-1.80

Antimony Sb

1.50-1.70

1.50-1.70

Tin Sn

0.01-0.05

misch earth

0.01-0.05

Silver Ag

0-0.0005

0-0.0005

Copper Cu

0-0.0001

0-0.0001

Bismuth Bi

0-0.003

0-0.003

Arsenic As

0-0.0005

0-0.0005

Tin Sn

0-0.001

Zinc Zn

0-0.0005

0-0.0005

Iron Fe

0-0.0005

0-0.0005

Sum of Impurities

0-0.006

0-0.006

[0021] The addition of rare earth refines the grains of the alloy, solves the problem of agglomerated frame-shaped segregation, and then significantly improves the corrosion resistance, deep cycle performance and electrochemical performance of the alloy. figure 1 and figure 2 is the comparison of alloy phase diagrams befor...

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Abstract

The invented alloy is applied to complete enclosed maintenance free lead acid cell. The ingredient is Cd:1.5%-2.0%, Sb:1.5%-2.0%, RE:0.01-0.05%, Sn:0.01-0.05%; ingredient of RE is Ce, La, Pr, Nd etc. Adding Pb, Cd, mixed rare earths, stannum etc. constitutes alloy of Pb-Cd-Sb-Re-Sn. Features of the alloy are strong corrosion resistance, high deep cycle duty. Method for manufacturing the alloy includes producing Pb-RE intermediate alloy about 660 deg.C by using general crucible furnace or iron-lead pan; adding prepared antimony and stannum to molten lead at 450-500 deg.C; adding the molten fluid into cadmium and Ph-RE. Qualified alloy is casting into ingot for making sheet grating further.

Description

Technical field [0001] The invention relates to a grid alloy material for fully enclosed maintenance-free lead-acid batteries and a preparation method thereof. The alloy is mainly used in the manufacture of lead-acid batteries, and is especially suitable for making plates of deep-cycle traction-type maintenance-free lead-acid batteries. grid alloy material. Background technique [0002] The reform of industrial structure, environmental protection, effective utilization of resources and the development of resource recycling have put forward many new requirements for lead-acid batteries. In this regard, countries all over the world are researching and developing high-performance batteries to solve problems such as reliability, maintenance-free, deep cycle, and corrosion resistance of lead-acid batteries. As the main part of the battery, the grid alloy plays an important role in the development of the battery. [0003] In recent years, the use of electric scooters and the adv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/68C22C11/00C22C1/02
CPCY02E60/12Y02E60/10
Inventor 沈嘉麟顾秀峰吴建华张忠民韩鹰周正华
Owner 上海飞轮有色冶炼厂
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