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Alloy material for positive grid of storage battery and preparation method thereof

An alloy material and battery technology, applied in the direction of electrode carrier/current collector, etc., can solve the problems of destroying the lead furnace, corrosion and fracture of the grid, shortening the service life of the lead pump, etc., to improve the castability, cycle life, and combination performance effect

Active Publication Date: 2011-04-27
ANHUI LEOCH BATTERY TECH
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AI Technical Summary

Problems solved by technology

However, adding Al to the lead liquid will cause many problems, such as high temperature must be used, and the use of high temperature will cause a large number of pores and shrinkage holes in the microstructure of the cast grid
At the same time, high temperature will also damage the iron metal components in the lead furnace, and shorten the service life of the lead pump, etc.
Moreover, after Al inclusions are cooled in the alloy lead liquid, metal Al particles will be formed in the alloy lead liquid, which leads to the problem of potential grid corrosion cracking
Therefore, the existing Pb-Ca-Sn-Al quaternary alloys or multi-element alloys containing Pb-Ca-Sn-Al four elements can no longer meet the production needs of high-performance lead-acid batteries.

Method used

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  • Alloy material for positive grid of storage battery and preparation method thereof
  • Alloy material for positive grid of storage battery and preparation method thereof
  • Alloy material for positive grid of storage battery and preparation method thereof

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Embodiment 1

[0038] Take the preparation of 100kg alloy material as an example to describe in detail.

[0039] 1: Raw material selection and weighing:

[0040] 1. Lead ingot: 1# electrolytic lead

[0041] 2. Copper or copper alloy: pure copper or copper alloy, wherein the copper content in the copper alloy is greater than or equal to 90%, totaling 0.02kg to 0.04kg;

[0042] 3. Calcium block: purity ≥99%, 0.10~0.13kg;

[0043] 4. Tin ingot: grade above 99.9, flat-type front grid: 0.3-0.6kg; tube-type front grid: 1.0-1.3kg;

[0044] Two: Preparation process and key points

[0045] Such as figure 1 Shown is the flow chart of the method for preparing Pb-Ca-Sn-Cu quaternary alloy material or multi-element alloy II in the present invention.

[0046] 1. Wrap and seal copper or copper alloy with lead foil, or fill it in a hollow lead block for use.

[0047] 2. Weigh 1# electrolytic lead with 80% of the volume of the lead pot, heat to melt the electrolytic lead to form lead liquid, and keep t...

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Abstract

The invention discloses an alloy material for a positive grid of a storage battery, which comprises lead, calcium, tin, and copper. The alloy material for preparing a flat positive grid consists of the following components in percentage by weight: 0.10 to 0.13 percent of calcium, 0.30 to 0.60 percent of tin, 0.02 to 0.04 percent of copper, and the balance of lead; and the alloy material for preparing a tubular positive grid consists of the following components in percentage by weight: 0.10 to 0.13 percent of calcium, 1.00 to 1.30 percent of tin, 0.02 to 0.04 percent of copper and the balance of lead. Through the invention, the alloy material for the positive grid of the storage battery with good casting property, mechanical properties and corrosion resistance can be manufactured.

Description

technical field [0001] The invention relates to the technical field of storage battery production, in particular to an alloy material of a storage battery positive grid and a preparation method thereof. Background technique [0002] At present, the commonly used grid alloys for existing valve-regulated and maintenance-free lead-acid batteries are Pb-Ca-Sn-Al quaternary alloys or multi-element alloys containing four elements of Pb-Ca-Sn-Al. Compared with Pb-Sb alloys, Pb-Ca alloys are poor in castability, mechanical properties, grid and active material bonding properties, and corrosion resistance. Especially for the Pb-Ca positive grid alloy, the Ca content is usually about 0.08%, and the alloy crystal grains of the cast positive grid are relatively large, and the formed boundaries are relatively few. Therefore, compared with the Pb-Sb alloy, the bonding force of the grid to the active material is relatively poor. In the prior art, in order to solve the problem of poor bond...

Claims

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Application Information

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IPC IPC(8): H01M4/68C22C11/06C22C11/04
CPCY02E60/12Y02E60/10
Inventor 董李熊正林
Owner ANHUI LEOCH BATTERY TECH
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