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Conductive composite metal sheet between lugs in batteries or batteries and machining method

A processing method and metal sheet technology, which is applied to battery pack parts, circuits, electrical components, etc., can solve problems affecting battery pack performance, high welding requirements, and insufficient bonding strength of the alloy layer, etc.

Inactive Publication Date: 2015-11-04
谢振华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For the tabs inside the battery or the conductive composite metal sheets between the batteries produced by the existing processing technology, due to the high welding requirements after copper-nickel compounding, it is easy to produce false welding, which will affect the performance of the entire battery pack; in addition, the material The cleaning treatment is slightly neglected, and the alloy layer formed between the nickel and copper molecules has insufficient bonding strength, which will also affect the performance of the battery pack in subsequent use.

Method used

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  • Conductive composite metal sheet between lugs in batteries or batteries and machining method
  • Conductive composite metal sheet between lugs in batteries or batteries and machining method

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Embodiment 1, select the copper strip that is TP1, TP2, TU1 or TU2 for use, purity is the nickel strip of 99.5%, offer one deep 0.01um in the middle of the nickel strip, the groove of wide 1cm, the groove of copper strip corresponding nickel strip etc. The nickel and copper strips are cleaned with degreasing agent, and then the copper and nickel strips are respectively heated to 600 degrees Celsius and cooled naturally; the copper and nickel strips are cleaned and polished with polishing equipment made of steel wire wheels; Copper and nickel strips are compounded on a clad rolling mill; the clad strip is heated to 750 degrees Celsius, cooled naturally, and finally the clad copper-nickel strip is cold-rolled to the required thickness, and then annealed according to customer requirements.

Embodiment 2

[0025] Embodiment 2, select the copper strip that is TP1, TP2, TU1 or TU2 for use, purity is the nickel strip of 99.5%, offer one deep 0.9um in the middle of nickel strip, the groove of wide 8cm, the groove of copper strip corresponding nickel strip etc. Width cutting, nickel strips and copper strips are cleaned with degreasing agent, and then the copper strips and nickel strips are heated to 700 degrees Celsius and cooled naturally; the copper strips and nickel strips are cleaned and polished with polishing equipment made of steel wire wheels; Copper and nickel strips are compounded on a clad rolling mill; the clad strip is heated to 800 degrees Celsius, cooled naturally, and finally the clad copper-nickel strip is cold-rolled to the required thickness, and then annealed according to customer requirements.

[0026] In the above-mentioned embodiments, the composite surfaces of the copper strip and the nickel strip can be composited on one side or on both sides as required.

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Abstract

The invention discloses a machining method for a conductive composite metal sheet between lugs in batteries or the batteries. According to the conductive composite metal sheet located between the lugs in the batteries or the batteries and produced through the method, the thickness of a nickel metal layer on the surface of the metal sheet is much larger than the thickness of an electroplated coating, so that the welding strength is high, the welding difficulty is low, and a cold solder joint is not prone to being generated; and the binding strength between the nickel metal layer and a copper belt is higher, and the performance of a whole battery set is ensured. The method is characterized by comprising the following steps of conducting grooving and tailoring on a copper belt and a nickel belt, conducting cleaning and oil removal on the copper belt and the nickel belt, conducting annealing on the copper belt and the nickel belt, polishing of the surfaces of the copper belt and the nickel belt, compositing, annealing and cold rolling finally.

Description

technical field [0001] The invention relates to a tab inside a battery or a conductive composite metal sheet between batteries and a processing method thereof. Background technique [0002] BACKGROUND OF THE INVENTION Spot welding technology is widely used in secondary battery and other electronic industries. 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 generally nickel-plated steel, and the performance of spot welding between two parts of the same material is bett...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00H01M2/20H01M2/26H01M50/503H01M50/522H01M50/526H01M50/528H01M50/54
CPCY02E60/10
Inventor 谢振华
Owner 谢振华
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