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Ear-pole of battery inner and electric sheet metal between batteries and processing method

A technology of conductive metal sheets and processing methods, which is applied to battery pack components, conductive materials, conductive materials, etc., and can solve problems such as copper and nickel-plated steel shells, poor spot welding performance of pure nickel, and easy to rust

Inactive Publication Date: 2006-01-18
YIXING HUIHUA COMPOSITE MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For the tabs inside the existing battery and the conductive metal sheets between the batteries, pure nickel or nickel-plated steel is used to meet the welding performance requirements, but pure nickel is expensive and nickel-plated steel is easy to rust, and copper strips with low resistance are used Its price is relatively low, but the spot welding performance of copper and nickel-plated steel shell and pure nickel is not good. The performance is good, and the conductivity and other comprehensive properties are better than pure nickel and nickel-plated steel. For this reason, the invention also provides a processing method for the tabs inside the battery and the conductive metal sheets between the batteries.

Method used

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  • Ear-pole of battery inner and electric sheet metal between batteries and processing method

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Embodiment 1

[0021] Embodiment 1: Select the copper strip whose grade is TP1, TP2, TU1 or TU2, clean it with detergent, then remove the oxide layer on the surface of the copper strip with a wire brush, place the copper strip in a mixture of sulfuric acid and hydrofluoric acid Immerse in the acid for 10 hours, wherein the volume ratio of sulfuric acid and hydrofluoric acid is 2: 1, take 450 parts of nickel sulfamate, 30 parts of boric acid, and 0.056 parts of wetting agent to configure the electroplating solution by weight ratio; the pH value of the electroplating solution is 4.2. Electroplating the surface of the copper strip at a temperature of 50 degrees Celsius, and the current density of the electroplating is 8A / D m 2 ; Heat the nickel-plated copper strip to 950 degrees Celsius in a vacuum furnace, keep it warm for 1.5 hours, stop heating, and cool naturally; finally, cold-roll the copper strip to the required thickness with a rolling mill, and then anneal and cold-roll again according ...

Embodiment 2

[0022] Embodiment 2, select the copper strip that the grade is TP1, TP2, TU1 or TU2, clean with detergent, then remove the oxide layer on the surface of the copper strip with a wire brush, place the copper strip in a mixture of sulfuric acid and hydrofluoric acid Soak in acid for 10 hours, wherein the volume ratio of sulfuric acid and hydrofluoric acid is 3: 1, get 290 parts of nickel sulfamate, 40 parts of boric acid, NICL 2 .6H 2 O 27 parts of configuration electroplating solution, the pH value of electroplating solution is 3.8, and temperature is carried out electroplating to the surface of copper strip under the condition of 60 degrees centigrade, the current density of electroplating is 40A / Dm 2 ;Heat the nickel-plated copper strip at 1000 degrees Celsius in a vacuum furnace, keep it warm for 1.8 hours, stop heating, and cool naturally; finally, cold-roll the copper strip to the required thickness with a rolling mill, and then anneal and cold-roll again according to the n...

Embodiment 3

[0023] Embodiment 3, select the copper strip that the trade mark is TP1, TP2, TU1 or TU2, clean with detergent, then remove the oxide layer on the surface of the copper strip with a wire brush, place the copper strip in a mixture of sulfuric acid and hydrofluoric acid Soak in acid for 10 hours, wherein the volume ratio of sulfuric acid and hydrofluoric acid is 4: 1, get 720 parts of nickel sulfamate, 42 parts of boric acid, NICL 2 .6H 2 O 12 parts of configuration electroplating solution, the pH value of electroplating solution is 4, and temperature is carried out electroplating to the surface of copper strip under the condition of 65 degrees centigrade, and the current density of electroplating is 80A / D m 2 ; Heat the nickel-plated copper strip to 1150 degrees Celsius in a vacuum furnace, keep it warm for 2 hours, stop heating, and cool naturally; finally, cold-roll the copper strip to the required thickness with a rolling mill, and then anneal and cold-roll again according t...

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Abstract

This invention relates to electrode ear in the cell and conductive metal sheet among the cells and their processing method, with the advantages of low price, good weldability, conductivity and comprehensive property better than pure nickel and nickel-plating steel. The invention comprises base plate in copper material, characterized in that the base plate surface is nickel-copper alloy layer, and comprising the following steps: cleaning the copper belt, eliminating oil, dealing deoxidation and ion treatment to the copper belt surface, then electroplating, percolation annealing and at last cold rolling.

Description

(1) Technical field [0001] The invention relates to the tab inside the battery and the conductive metal sheet between the batteries, and also relates to a processing method for the tab inside the battery and the conductive metal sheet between the batteries. (2) Background technology [0002] In the secondary battery and other electronic industries, spot welding technology is widely used. Most of the traditional soldering and welding techniques that require solder are replaced by spot welding, because those that require solder will produce lead-tin dust during the welding process, which pollutes the environment and the welding strength is not enough. It is difficult to dispose of materials after scrapping, and it is easy to re-contaminate environment. The tabs inside the existing battery and the conductive metal sheets between the batteries are generally made of pure nickel or nickel-plated steel, because the shell material of the battery is pure nickel or nickel-plated stee...

Claims

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Application Information

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IPC IPC(8): H01M2/20H01B1/00H01B13/00H01M50/536
CPCY02E60/10
Inventor 谢振华
Owner YIXING HUIHUA COMPOSITE MATERIAL CO LTD
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