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Production technique of copper strips for solar modules

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

Inactive Publication Date: 2011-10-26
浙江力博实业股份有限公司
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  • Abstract
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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 content is strictly controlled and the processing technology is optimized to manufacture alternatives. Imported copper strips for solar cell modules are developed and developed to meet the ever-increasing high-quality and high-performance requirements of the solar industry

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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] Such as figure 1 As shown, the process scheme adopted by the present invention is as follows: upward continuous casting oxygen-free copper rod-continuous extruded copper strip blank-rough rolling-intermediate rolling-intermediate annealing-finishing rolling-degreasing cleaning-finished product Annealing-cleaning and passivation of grinding surface-slitting and cutting-packaging and storage

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

[0030] Select Grade A electrolytic copper as the raw material. After preheating and drying the electrolytic copper, it is melted in a melting furnace at 1150℃±10℃, the water pressure of the crystallizer is 2~4MPa, and the temperature of the crystallizer outlet water is controlled at 35℃~50℃. The furnace is insulated, and the copper liquid temperature is 1150℃±10℃. use figure 2 The shown on-line degassing and deoxygenating stirring device, the copper liquid is filled with 99.996% of argon or nitrogen, and the metered argon or ...

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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 non-ferrous metal processing, and particularly relates to a production process of a copper strip for solar cell modules. 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; solar cells are a device that uses the photoelectric effect to convert solar energy into electrical energy. Copper tape is the base material for the production of tin-coated soldering tape for solar cell modules. 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. Summary of the invention [0003] The present invention provides a production process of c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/18
CPCY02P70/50
Inventor 骆业奎姚幼甫毛毅中骆越峰徐高磊
Owner 浙江力博实业股份有限公司
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