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Method for treating aluminum lug

A processing method and a technology for a pole lug are applied in the processing field of aluminum pole lugs, which can solve the problems of increasing cost, increasing the process of converting aluminum strips to nickel, and the like.

Inactive Publication Date: 2012-01-25
TECHNE CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This will not only increase the process of converting aluminum strips to nickel, but also increase the cost

Method used

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  • Method for treating aluminum lug
  • Method for treating aluminum lug
  • Method for treating aluminum lug

Examples

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Embodiment 1

[0031] 1. Drug preparation

[0032] (1) Preparation of lye: Measure 500ml of distilled water and put it into a beaker, weigh 5g of potassium carbonate and 2g of potassium hydroxide into the water, stir with a strong mixer for about 5min until the solution becomes clear and transparent;

[0033] (2) Acid solution preparation: measure 500ml of distilled water and put it into a beaker, weigh 100g of concentrated hydrochloric acid and put it into the water;

[0034] (3) Preparation of treatment solution: Measure 1000ml of distilled water and put it into a beaker, weigh 33.0g of nickel sulfate, 33.0g of sodium hypophosphite, 9.3g of boric acid, 25g of sodium citrate, 30g of sodium acetate, and 3.0g of potassium iodate. Stir with a strong mixer for 10 minutes, adjust the pH value with sodium hydroxide, and keep the pH value of the treatment solution at about 9.0.

[0035] 2. Nickel-plated aluminum lugs

[0036] Electroless nickel plating is carried out according to the nickel plat...

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PUM

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Abstract

The invention discloses a method for treating an aluminum lug. Nickel is directly plated on the aluminum lug by using a chemical method. The method comprises the following steps of: alkaline washing: immersing an aluminum belt in an alkaline liquid with the temperature of 50+ / -5 DEG C to clean the aluminum belt; water washing; acid washing: immersing the aluminum belt in an acid liquid, and cleaning the aluminum belt at normal temperature; water washing; nickel plating: immersing the aluminum lug in a treating liquid containing nickel salt, a complexing agent, a reducing agent, a stabilizing agent; and water washing. Nickel is directly plated on the surface of the aluminum pug through the treatment method, the aluminum lug is then welded with a protection plate or conducting wire without nickel conversion, the nickel conversion procedure during core assembly can be omitted, and the cost is lowered.

Description

technical field [0001] The invention relates to a processing method for aluminum tabs. Background technique [0002] At present, the positive poles used in flexible packaging and polymer lithium-ion batteries are aluminum tabs. During the assembly stage of flexible packaging and polymer lithium-ion batteries, when welding the protective plate, the aluminum tape of the aluminum tab cannot be welded to the pad of the protective plate. It is impossible to directly connect the wire with tin, so it is necessary to convert the aluminum strip to nickel (that is, weld a nickel strip on the aluminum strip) before soldering to the protective plate or tinning the wire. Such as figure 1 As shown, the middle part of the aluminum strip 1' is the tab glue 2', and the nickel strip 3' is welded at the nickel-turning place 4' on the top of the aluminum strip 1', and then welded or tinned through the nickel strip 3'. This will not only increase the process of converting the aluminum strip to...

Claims

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Application Information

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IPC IPC(8): C23C18/36C23C18/18
Inventor 佟健郭也平
Owner TECHNE CORP
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