Production technique of copper strips for solar modules

A solar cell and production process technology, applied in electrical components, circuits, semiconductor devices, etc., can solve the problems of unstable oxygen content, difficult processing, and high performance requirements of copper strips for solar cell modules, and achieves optimized annealing process, no Residual stains, the effect of superior mechanical properties

Inactive Publication Date: 2010-06-02
浙江力博实业股份有限公司
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Problems solved by technology

[0003] The invention provides a production process of copper strips for solar cell components. In order to solve the problems of high performance requirements, unstable oxygen content and difficult processing of copper strips for solar cell components, the oxygen co...

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  • Production technique of copper strips for solar modules
  • Production technique of copper strips for solar modules
  • Production technique of copper strips for solar modules

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Embodiment Construction

[0028] like figure 1 As shown, the process scheme adopted by the present invention is as follows: upward continuous casting oxygen-free copper rod——continuously extruded copper strip billet—rough rolling—intermediate rolling—intermediate annealing—finish rolling—degreasing and cleaning—finished product Annealing—cleaning, grinding and passivation—slitting and cutting—packing and warehousing

[0029] 1. Upward continuous casting oxygen-free copper rod

[0030] Choose A-grade electrolytic copper as the raw material, preheat and dry the electrolytic copper, and then melt it in a melting furnace at 1150°C±10°C. The furnace is kept warm, and the temperature of the copper liquid is 1150°C ± 10°C. use figure 2 In the online degassing and deoxidizing stirring device shown, the copper liquid is filled with 99.996% argon or nitrogen, and the metered amount of argon or nitrogen is pressed into the copper liquid through the controlled rotating graphite shaft and rotor and broken up in...

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Abstract

The invention discloses a production technique of copper strips for solar modules, which belongs to the technical field of nonferrous metal processing and comprises the following steps: drawing-up of continuous-casting oxygen-free copper bar: using high-quality electrolytic copper as the raw material, melting at 1150+/-10 DEG C, keeping the temperature, covering the copper liquid surface with charcoal and graphite scales to ensure the vacuum state during melting, degassing on line, deoxidizing, stirring, and drawing up the copper bar with a tractor set in an on-off vacuum way; continuous extrusion of copper strip blanks: using oxygen-free copper rods as the raw material, producing copper strip blanks by using a continuous extruder set, cooling the extruded copper strip blanks through a vacuum oxidation-resisting pipe and a water tank, drying and coiling; and rough-rolling the copper strip blanks, medium-rolling, interstage annealing, finish rolling, degreasing, washing, annealing the finished product, washing, grinding the surface to passivate, and longitudinally cutting to obtain the finished product. The product of the invention has the advantages of high purity, low oxygen content and high electrical conductivity.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal processing, and in particular relates to a production process of a copper strip for a solar battery module. Background technique [0002] As a widely distributed, inexhaustible and inexhaustible green, pollution-free and clean energy, solar energy is the preferred energy source for the sustainable development of human society; a solar cell is a device that converts solar energy into electrical energy by using the photoelectric effect. Copper strip is the base material for making tin-coated solder strips for solar cell modules, and its performance requirements: conductivity ≥ 100% IACS, elongation ≥ 40%, tensile strength 240-260MPa, hardness HV ≤ 50, oxygen content less than 10ppm . Due to its high performance requirements, unstable oxygen content and difficult processing, it is currently imported in China. Contents of the invention [0003] The invention provides a production process ...

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Application Information

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IPC IPC(8): H01L31/18
CPCY02P70/50
Inventor 骆业奎姚幼甫毛毅中
Owner 浙江力博实业股份有限公司
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