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Non-cadmium lead stibium slab lattice alloy for traction type accumulator

A technology of antimony alloy and storage battery, which is applied in the field of metallurgy, can solve the problems of easy thermal cracking and poor toughness, achieve the effects of inhibiting growth, improving service life, and solving thermal cracking problems

Inactive Publication Date: 2008-10-29
上海飞轮有色冶炼厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a cadmium-free lead-antimony grid alloy for traction batteries. The rare-earth lead-antimony alloy needs to solve the problems of the lead-antimony alloy grid used in batteries for electric vehicles in the prior art, which is prone to thermal cracking and toughness. Poor technical problems, but also to solve the problem of product substitution of lead-cadmium-antimony alloy

Method used

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Embodiment 1

[0017] The present invention is a cadmium-free lead-antimony grid alloy for traction batteries. The lead-antimony alloy is composed of antimony, mixed rare earth and lead, and the weight percentage of the antimony in the lead-antimony alloy is 0.5-4.5% %, the weight percentage of the mixed rare earths in the lead-antimony alloy is 0.05-2%, the balance is lead, and the mixed rare earths are lanthanum (La), cerium (Ce), praseodymium (Pr), Any one of rare earth elements such as neodymium (Nd), or a mixture of two or more rare earth elements in any proportion.

[0018] The preparation process of the present invention adopts conventional processes in the prior art.

Embodiment 2

[0020] The present invention is a cadmium-free lead-antimony grid alloy for traction storage batteries. The lead-antimony alloy is composed of antimony, mixed rare earths, tin and lead, and the weight percentage of the antimony in the lead-antimony alloy is 0.5 ~4.5%, the weight percentage of the misch metal in the lead-antimony alloy is 0.05-2%, the balance is lead, and the weight percentage of the tin in the lead-antimony alloy is 0.10-1.00% %, the mixed rare earth is any one of the rare earth elements such as lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), or two or more of the rare earth elements Mixing in any proportion.

[0021] The preparation process of the present invention adopts conventional processes in the prior art.

Embodiment 3

[0023] The present invention is a cadmium-free lead-antimony grid alloy for a traction battery. The lead-antimony alloy is composed of antimony, mixed rare earths, selenium and lead, and the weight percentage of the antimony in the lead-antimony alloy is 0.5-4.5%, the weight percentage of the misch metal in the lead-antimony alloy is 0.05-2%, the weight percentage of the selenium in the lead-antimony alloy is 0.01-0.08%, and the balance is lead, and the mixed rare earth is any one of the rare earth elements such as lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), or two or more of the rare earth elements Mixing in any proportion.

[0024] The preparation process of the present invention adopts conventional processes in the prior art.

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Abstract

The invention discloses a cadmium free lead-antimony grid alloy for traction batteries. The lead-antimony alloy contains antimony, mischmetal and lead and the weight percentage of the antimony in the lead-antimony alloy is 0.5 to 4.5 percent, that of the mischmetal is 0.05 to 2 percent and the rest is the lead. The grid alloy adds rare earth elements into the lead-antimony alloy and causes the grains of the alloy to become small and even, thereby solving the problem of the hot cracking of the lead-antimony alloy and obviously improving and increasing the toughness, aging strength and corrosion resistance of the alloy. Meanwhile, the adding of the rare earth obviously inhibits the growth of the Pb(II) oxide film and reduces the impedance thereof, thus improving the charging and discharging performance and the deep circulation of the battery. Batteries for electric vehicles combined by lead-acid battery grids produced by the alloy have the advantages of corrosion resistance, deep circulation, high-current discharge and long service life.

Description

Technical field: [0001] The invention relates to the field of metallurgy, in particular to a lead-antimony alloy, in particular to a cadmium-free lead-antimony grid alloy for traction batteries. Background technique: [0002] Lead-antimony alloy grids are widely used in traction batteries for electric vehicles. However, the lead-antimony alloy is easy to crack and has poor toughness, which makes the battery poor in corrosion resistance, shallow in cycle and short in life. [0003] At present, many domestic electric bicycle batteries generally use lead-cadmium-antimony alloys. However, cadmium is a toxic element, and products containing cadmium are gradually restricted at home and abroad, which also limits the application prospects of lead-cadmium-antimony alloys. Invention content: [0004] The object of the present invention is to provide a cadmium-free lead-antimony grid alloy for traction batteries. The rare-earth lead-antimony alloy should solve the problem that the l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/68C22C11/00C22C11/08
CPCY02E60/10
Inventor 杨波沈嘉麟顾秀峰吴建华张忠民韩鹰陈正明黄惠民朱卫敏
Owner 上海飞轮有色冶炼厂
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