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Lead-acid battery positive-grid low antimony alloy

A technology of lead-acid batteries and antimony alloys, which is applied in the direction of lead-acid battery electrodes, battery electrodes, circuits, etc., can solve the problems of easy water loss, good corrosion resistance and electrical conductivity, and low hydrogen evolution overpotential, so as to reduce serious water loss, Improved corrosion resistance and durability, simple preparation process

Inactive Publication Date: 2018-02-09
WUHAN YIWEIDENG TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the above-mentioned defects in the prior art, the present invention provides a low-antimony alloy for the positive grid of a lead-acid battery, which solves the problems of low hydrogen evolution overpotential and easy dehydration of the lead-antimony alloy, and has corrosion resistance and less dehydration. , good electrical conductivity

Method used

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  • Lead-acid battery positive-grid low antimony alloy

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Comparison scheme
Effect test

Embodiment 1

[0020] A low-antimony alloy for the positive grid of a lead-acid storage battery, comprising the following components in weight percentages:

[0021] Manganese 0.07%, silver 0.008%, tin 0.09%, antimony 1.2%, ytterbium 0.08%, and the balance is lead.

[0022] According to the proportioning of the above-mentioned grid alloy, the preparation method is as follows:

[0023] Step 1. Divide the lead into two parts. One part of lead is melted at 450-470°C, and the other part is used; after the lead is melted, a part of tin is added. After it is completely melted, stir evenly, and when it is lowered to 500-550°C, take it out of the furnace to obtain lead-antimony-tin alloy;

[0024] Step 2: Melt ytterbium in a high-temperature furnace at 950°C. After it is completely melted, raise the temperature to 1000-1100°C, and then add silver. After it is completely melted, stir evenly; Ytterbium alloy;

[0025] Step 3. Put another part of lead into the lead pot, and heat up to 450-470°C to me...

Embodiment 2

[0028] A low-antimony alloy for the positive grid of a lead-acid storage battery, comprising the following components in weight percentages:

[0029] Manganese 1.3%, silver 0.005%, tin 0.06%, antimony 2.0%, ytterbium 0.08%, lanthanum 0.04%, and the balance is lead.

[0030] According to the proportioning of the above-mentioned grid alloy, the preparation method is as follows:

[0031] Step 1. Divide the lead into two parts. One part of lead is melted at 450-470°C, and the other part is used; after the lead is melted, a part of tin is added. After it is completely melted, stir evenly, and when it is lowered to 500-550°C, take it out of the furnace to obtain lead-antimony-tin alloy;

[0032] Step 2: Melt ytterbium and lanthanum 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; Obtain silver ytterbium lanthanum alloy;

[0033] Step 3: Put another part of lead into the lead pot...

Embodiment 3

[0036] A low-antimony alloy for the positive grid of a lead-acid storage battery, comprising the following components in weight percentages:

[0037] Manganese 1.2%, silver 0.007%, tin 0.08%, antimony 1.5%, ytterbium 0.07%, samarium 0.02%, and the balance is lead.

[0038] According to the proportioning of the above-mentioned grid alloy, the preparation method is as follows:

[0039] Step 1. Divide the lead into two parts. One part of lead is melted at 450-470°C, and the other part is used; after the lead is melted, a part of tin is added. After it is completely melted, stir evenly, and when it is lowered to 500-550°C, take it out of the furnace to obtain lead-antimony-tin alloy;

[0040] Step 2: Melt ytterbium and samarium in a high-temperature furnace at 950°C. After melting completely, raise the temperature to 1000-1100°C, then add silver, and stir evenly after it is completely melted; Obtain silver ytterbium samarium alloy;

[0041] Step 3: Put another part of lead into...

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Abstract

The present invention relates to a lead-acid battery positive-grid low antimony alloy. The alloy comprises, by weight, 0.07-1.5% of manganese, 0.005-0.008% of silver, 0.05-0.12% of tin, 1.2-2.5% of antimony, 0.07-0.15% of rare earth element(s), and the balance lead. The rare earth element(s) is one kind or several kinds of ytterbium, samarium and lanthanum. According to the alloy, by adding the manganese, the silver and the rare earth element(s) into the low antimony alloy, the problems of low hydrogen evolution over-potential and easiness for losing water of the low antimony alloy are solved,the electrical conductivity, the strength, the hardness and the creep resistance of the alloy are improved, the capability of deep discharging cycle of a battery is improved, and the life of the battery is greatly improved.

Description

technical field [0001] The invention relates to the field of lead-acid batteries, in particular to a low-antimony alloy on the positive grid of a lead-acid battery. Background technique [0002] The grid material of lead-acid batteries initially uses pure lead as the positive and negative electrodes, but its strength is low and easy to deform, resulting in poor vibration resistance of the battery. The lead-acid batteries currently used in the market can be divided into lead-antimony alloys and lead-calcium-tin-aluminum alloys for the positive grid lead alloys used. Lead-antimony alloy has the advantages of good deep cycle performance and low cost. The disadvantage is that its hydrogen evolution overpotential is low, and it is easy to lose water, so it cannot be used as a grid alloy for maintenance-free batteries. research. Although the addition of cadmium can increase the hydrogen evolution overpotential, cadmium will pollute the environment. With the enhancement of people...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/68H01M4/22
CPCH01M4/22H01M4/685Y02E60/10
Inventor 余俊
Owner WUHAN YIWEIDENG TECH DEV
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