Copper-aluminum composite material for soft package battery connecting piece and production process thereof

A technology of copper-aluminum composite materials and soft-pack batteries, which is applied to battery pack parts, electronic equipment, electrical components, etc., can solve the problems of non-continuous large-area compounding, unstable quality, and high production costs, and achieve social and economic benefits. Obvious benefits, simple series-parallel connection, and improved yield

Inactive Publication Date: 2019-09-13
ZHENGZHOU FORCE COPPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Because the traditional copper-aluminum composite panels are mainly produced by explosive welding, brazing, friction welding, flash welding and other methods, there are problems such as low welding rate, easy deformation of the workpiece, unstable quality, high production cost, and inability to continue large-area composites. ; Therefore, it is very necessary to provide a copper-aluminum composite material and production process for pouch battery connectors that are safe, reliable, high in composite strength, and have no contact resistance between copper and aluminum.

Method used

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  • Copper-aluminum composite material for soft package battery connecting piece and production process thereof

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Effect test

Embodiment 1

[0020] like figure 1 Shown, a kind of production technology of copper-aluminum bimetal composite strip, concrete steps are as follows: Copper plate 2 is soaked 5 minutes with the sulfuric acid of concentration 15%, rinses with clear water, cleans with acetone, blows dry, brushes with metal surface cleaning machine To remove the oxide film on the copper surface, clean the aluminum plate 1 with acetone to clean the oil on the aluminum surface, rinse with water, soak with 20% NaOH alkali solution at 60°C for 5 minutes, rinse with water, and rinse with 20% HCl solution at 60°C Neutralize for 5 minutes to form a bright NaCl film on the surface of the aluminum plate 1, wash it with clean water, and fix the prepared core material and the front end of the cladding plate together under an argon protective atmosphere, then send them to a heating furnace for heating , the primary rolling temperature is 350°C, the reduction rate is 65%, the secondary rolling is cold rolling after intermed...

Embodiment 2

[0024] like figure 1 Shown, a kind of production technology of copper-aluminum bimetal composite strip, concrete steps are as follows: Copper plate 2 is soaked 5 minutes with the sulfuric acid of concentration 15%, rinses with clear water, cleans with acetone, blows dry, brushes with metal surface cleaning machine To remove the oxide film on the copper surface, clean the aluminum plate 1 with acetone to clean the oil on the aluminum surface, rinse with water, soak with 20% NaOH alkali solution at 60°C for 5 minutes, rinse with water, and rinse with 20% HCl solution at 60°C Neutralize for 5 minutes to form a bright NaCl film on the aluminum surface, wash it with water, and fix the prepared core material and the front end of the cladding plate together under an argon protective atmosphere, then send them to a heating furnace for heating. The first rolling temperature is 300°C, the reduction rate is 50%, the second rolling adopts cold rolling after intermediate annealing, the red...

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Abstract

The invention relates to a copper-aluminum composite material for a soft package battery connecting piece and a production process thereof. The process comprises the following steps of: pretreating the surfaces of copper and aluminum to remove an oxide film on the surface of the metal, performing hot rolling twice under argon atmosphere protection to achieve the thickness of a finished product, and finally, performing heat treatment annealing to increase the bonding strength of a copper-aluminum composite plate, wherein the aluminum plate in the copper-aluminum composite material comprises thefollowing components percentage by weight: 0-0.2% of Fe, 0-0.1% of Si, 0-0.02% of Zn, 0-0.02% of Ga, and the balance being Al, the thickness of the aluminum plate is 3-13mm, the copper plate is red copper with the purity of 99.993 percent, and the thickness of the copper plate is 0.4-2.0mm. The copper-aluminum composite material and the production process thereof effectively solve the problem ofpack connection of the lithium battery pack, and achieve safe, reliable, light and simple series-parallel connection of the lithium battery pack, and the product has the characteristics of high composite strength, no contact resistance between copper and aluminum, and a reliable quality stability point; and moreover, the copper-aluminum composite material for the soft package battery connecting piece and the production process thereof have the advantages of safety, reliability, high composite strength and no contact resistance between copper and aluminum.

Description

technical field [0001] The invention relates to the technical field of power batteries, in particular to a copper-aluminum composite material for a pouch battery connector and a production process. Background technique [0002] With the increasingly serious environmental protection problems, new energy vehicles have become a key development industry in my country, but the battery assembly technology seriously restricts the development prospects of the new energy industry. Compared with hard shell batteries, soft pack batteries are light in weight and safe. Good and low cost, but the electrical connection between batteries requires riveting or ultrasonic welding, resulting in low production capacity and high processing costs, making it impossible for automated production. [0003] The patent (application number: 201610321267.X) discloses a method for connecting pouch batteries, including the preparation of electrode bodies, electrode tabs, tab connectors and conductive connect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/20C23G1/10C23G1/22C23G5/032C21D1/26B32B15/01B32B15/20B21B1/38
CPCB21B1/38B21B2001/386B32B15/01B32B15/20B32B2307/718B32B2439/00B32B2451/00B32B2457/10B32B2605/08C21D1/26C23G1/103C23G1/22C23G5/032H01M50/502Y02E60/10
Inventor 邓宏权张利明马一博韦丁楠
Owner ZHENGZHOU FORCE COPPER
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