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Melting process for positive electrode lead belt of lead-acid storage battery

A lead-acid battery, spraying technology, applied in metal material coating process, electrode carrier/collector, fusion spraying, etc., can solve the problem of affecting the deep cycle life of the battery and the closer combination of the positive grid and the positive lead paste , positive grid refractory oxidation reaction and other issues

Active Publication Date: 2022-04-08
CAMEL GRP XIANGYANG BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the rich tin in the positive grid also makes it more difficult for the positive grid to participate in the oxidation reaction during the curing process, which affects the tighter combination between the positive grid and the positive lead paste, thereby affecting the deep cycle life of the battery

Method used

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  • Melting process for positive electrode lead belt of lead-acid storage battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Use the positive electrode grid alloy of the conventional start-up lead-acid battery, and adopt the method of continuous casting and rolling lead strip to produce the positive electrode grid alloy billet, and the thickness H1 of the positive electrode grid alloy billet is 8.0mm;

[0019] The configured Pb (99.86 parts)-Sn (0.1 parts)-Bi (0.03 parts)-Sb (0.01 parts) alloy is attached to the positive electrode grid alloy blank by spraying, and the thickness of the sprayed alloy film layer is controlled at 150um-180um;

[0020] The lead billet attached to the sprayed alloy film layer is prepared into a positive electrode lead strip with a thickness H of 1.0mm through 5 rollings;

[0021] The positive electrode lead strip is punched to make a positive electrode grid, which is prepared into a 70Ah AGM start-stop battery through a conventional production process.

Embodiment 2

[0023] Use the positive electrode grid alloy of the conventional start-up lead-acid battery, and adopt the method of continuous casting and rolling lead strip to produce the positive electrode grid alloy billet, and the thickness H1 of the positive electrode grid alloy billet is 8.0mm;

[0024] The positive electrode grid alloy billet is prepared into a 3.1mm pre-rolled positive electrode grid alloy strip through two rolling passes;

[0025] The pre-rolled positive electrode grid alloy strip is cleaned by spraying pure water on-line, and dried by hot air through an air duct with a temperature of 100°C-130°C;

[0026] The configured Pb (97.95 parts)-Sn (0.5 parts)-Bi (1.5 parts)-Sb (0.05 parts) alloy is attached to the dry and clean surface of the pre-rolled positive grid alloy strip by spraying On the surface, the thickness of the sprayed alloy film is controlled at 20um-30um;

[0027] The pre-rolled positive electrode grid alloy strip with the sprayed alloy film layer is pre...

Embodiment 3

[0030] Use the positive electrode grid alloy of the conventional start-up lead-acid battery, and adopt the method of continuous casting and rolling lead strip to produce the positive electrode grid alloy billet, and the thickness H1 of the positive electrode grid alloy billet is 8.0mm;

[0031] The positive electrode grid alloy billet is prepared into a 3.1mm pre-rolled positive electrode grid alloy strip through two rolling passes;

[0032] The pre-rolled positive electrode grid alloy strip is cleaned by spraying pure water on-line, and dried by hot air through an air duct with a temperature of 100°C-130°C;

[0033] The configured Pb (98.92 parts)-Sn (0.3 parts)-Bi (0.75 parts)-Sb (0.03 parts) alloy is attached to the dry and clean surface of the pre-rolled positive grid alloy strip by spraying On the surface, the thickness of the sprayed alloy film is controlled at 20um-30um;

[0034] The pre-rolled positive electrode grid alloy strip with the sprayed alloy film layer is pr...

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Abstract

The invention belongs to the technical field of lead-acid storage batteries, and particularly relates to a lead-acid storage battery positive electrode lead belt meltallizing process. According to the lead-acid storage battery positive electrode lead strip meltallizing process, a positive grid alloy blank or an alloy strip obtained after pre-rolling is used as a meltallizing matrix, Pb (97.95%-99.86%)-Sn (0.1%-0.5%)-Bi (0.03%-1.5%)-Sb (0.01%-0.05%) alloy is used as a meltallizing material, and a 20-200 [mu] m alloy film layer is meltallizing on the positive grid alloy blank or the pre-rolled positive grid alloy strip. And then the positive grid alloy blank or the positive grid alloy strip attached with the meltallizing alloy film layer is continuously rolled to obtain the positive lead strip with the required thickness. After the positive lead belt prepared by the process is further prepared into a positive grid, the conductivity of the positive grid can be improved, and the deep cycle life of the storage battery can be greatly prolonged after the grid is used for preparing the lead-acid storage battery.

Description

technical field [0001] The invention belongs to the technical field of lead-acid storage batteries, and in particular relates to a melting process of lead strips of positive poles of lead-acid storage batteries. Background technique [0002] The positive grid alloy of the lead-acid battery is mainly Pb-Ca-Sn-Al alloy. In order to slow down the early capacity loss of the lead-acid battery, the content of Sn in the positive grid alloy is generally between 1% and 2%. Rich tin in the gate is beneficial to suppress PbO and PbSO with poor conductivity 4 The formation of the anode film significantly reduces the interface resistance of the anode film and enhances the conductive current collection function of the grid. However, the richness of tin in the positive grid also makes it more difficult for the positive grid to participate in the oxidation reaction during the curing process, which affects the tighter combination between the positive grid and the positive lead paste, thereb...

Claims

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Application Information

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IPC IPC(8): C23C4/123C23C4/14C23C4/08C23C4/02C22C11/06C22C11/10H01M4/68H01M4/73H01M4/84
CPCY02E60/10
Inventor 刘长来夏诗忠刘小锋高国兴张仁银邓国强
Owner CAMEL GRP XIANGYANG BATTERY
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