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Composite wire for grid, preparation method of composite wire, grid and lead-acid storage battery

A lead-acid battery, composite wire technology, applied in lead-acid battery, secondary battery repair/maintenance, electrode carrier/current collector, etc. The effect of low grid resistivity and easy industrialization

Active Publication Date: 2022-07-12
CHAOWEI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above analysis, the embodiment of the present invention aims to provide a composite wire for a grid and its preparation method, a grid, and a lead-acid battery, so as to solve the problem of high lead content, poor corrosion resistance, and poor preparation process of existing grid materials. cumbersome questions

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  • Composite wire for grid, preparation method of composite wire, grid and lead-acid storage battery
  • Composite wire for grid, preparation method of composite wire, grid and lead-acid storage battery

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preparation example Construction

[0046] In a second aspect, the present invention also provides a method for preparing a composite wire for a grid, which is used for preparing the composite wire for a grid of the present invention, and the preparation method includes:

[0047] (1) placing the aluminum or aluminum alloy wire base in a zinc solution for zinc immersion treatment, and forming a zinc film layer on the surface of the aluminum or aluminum alloy wire base;

[0048] (2) placing the aluminum or aluminum alloy wire substrate with a zinc film layer on the surface to carry out copper plating treatment in a copper plating solution, and forming a copper plating layer on the surface of the zinc film layer;

[0049] (3) the aluminum or the aluminum alloy wire base that the surface contains zinc film layer, copper coating layer successively is placed in lead-tin plating solution and carries out lead-tin alloy plating process, and the lead-tin alloy coating layer is formed on the copper coating layer surface;

...

Embodiment 1

[0077] (1) The aluminum alloy wire base with a diameter of 0.8mm was degreasing in 22g / L NaOH, the temperature was 56 °C, and the wire base was washed with water after 58s of treatment; the washed wire base was immersed in a nitric acid solution with a mass fraction of 50% 58s, temperature 30℃, washed with deionized water;

[0078] (2) The aluminum alloy wire base body treated in step (1) is subjected to a zinc immersion treatment for 1.5 minutes at a temperature of 26 ° C. The zinc immersion solution formula is: NaOH 280g / L, ZnO 50g / L, potassium sodium tartrate 30g / L, FeCl 3 2.5g / L, KNO3 2.5g / L.

[0079] (3) Place the aluminum alloy wire after the first dipping in nitric acid solution for 28s to de-zinc, and wash the wire with deionized water for a second dipping treatment for 2min, and the temperature is controlled at 33°C;

[0080] (4) place the aluminum alloy wire rod treated in step (3) in an alkaline copper plating solution, the red copper plate is the anode, and the...

Embodiment 2

[0085] (1) Degrease the aluminum alloy wire base with a diameter of 1.2 mm in 20g / L NaOH, at a temperature of 70 °C, and wash the wire base after 60s of treatment; the washed wire base is immersed in a nitric acid solution with a mass fraction of 50%. 60s, temperature 35℃, washed with deionized water;

[0086] (2) The aluminum alloy wire substrate treated in step (1) is subjected to a zinc immersion treatment for 3 minutes at a temperature of 34 ° C. The zinc immersion solution formula is: NaOH 300g / L, ZnO 55g / L, potassium sodium tartrate 35g / L, FeCl 3 3g / L, KNO 3 3g / L;

[0087] (3) Place the aluminum alloy wire after dipping in nitric acid solution for 30s to remove zinc, and wash the wire with deionized water for 2.5min, and control the temperature at 35°C;

[0088] (4) Place the aluminum alloy wire rod treated in step (3) in an alkaline copper plating solution, the red copper plate is the anode, and the current density is 1.5A / dm 2 , pH was controlled at 8, and washed ...

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Abstract

The invention relates to a composite wire for a grid, a preparation method of the composite wire, the grid and a lead-acid storage battery, belongs to the technical field of lead-acid storage batteries, and solves the problems of high lead consumption, poor corrosion resistance and tedious preparation process of a grid material in the prior art. The composite wire for the grid comprises an aluminum or aluminum alloy wire base body, a copper plating layer coated on the surface of the aluminum or aluminum alloy wire base body, a lead-tin alloy plating layer coated on the surface of the copper plating layer and a lead alloy layer coated on the surface of the lead-tin alloy plating layer. The composite wire is light in weight, low in resistivity and good in corrosion resistance, and the preparation method is simple.

Description

technical field [0001] The invention relates to the technical field of lead-acid batteries, in particular to a composite wire for a grid and a preparation method thereof, as well as a grid and a lead-acid battery. Background technique [0002] Lead-acid batteries are widely used in the fields of electric energy and energy storage because of their advantages of stability and reliability, no memory effect, low price, and can be made into a single large-capacity battery. The grid is the main component of the lead-acid battery and the current collecting skeleton of the battery, which plays the role of conducting and collecting current and making the current distribution uniform. At the same time, it supports the active material and is the carrier of the active material. [0003] Existing lead-acid battery grids are usually made of lead or lead alloy plates, usually by gravity casting or continuous casting and rolling. This kind of grid material has high lead consumption, poor c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/66H01M4/73H01M4/82H01M10/06H01M10/42
CPCH01M4/667H01M4/662H01M4/661H01M4/68H01M4/685H01M4/73H01M4/82H01M10/06H01M10/4235Y02E60/10
Inventor 杨彤王新虎项晨钱胜强代少振刘孝伟
Owner CHAOWEI POWER CO LTD
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