Manufacturing technology of copper strip for photovoltaic solar device

A photovoltaic solar energy and production process technology, which is applied in the production process field of copper strips for photovoltaic solar energy, can solve the problems of difficult processing, high requirements on performance, tolerance and surface quality, and difficulty in obtaining copper strips, and achieves excellent electrical and thermal conductivity, The effect of good comprehensive mechanical properties and excellent surface quality

Active Publication Date: 2013-10-02
江苏富威科技股份有限公司
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Problems solved by technology

The requirements for copper strip in the industry standard are: tensile strength ≥ 210MPa, elongation ≥ 20%, HV ≤ 52, tolerance accuracy of ± (0.003-0.004) mm, due to its high performance, tolerance and surface quality requirements, processing is difficult , it is difficult to obtain copper strip products that meet the requirements

Method used

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  • Manufacturing technology of copper strip for photovoltaic solar device

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[0038] Firstly, high-quality high-purity cathode copper is selected as raw material, followed by smelting, component analysis, heat preservation, and drawing casting processes. The temperature during smelting is controlled between 1180°C and 1220°C, and its composition is analyzed at the same time to ensure that each component is in the preset range. Within the range, the holding temperature is controlled at 1150°C to 1200°C. Finally, a slab with a thickness of 17.5mm is obtained by drawing casting. The content of Cu+Ag in the slab is ≥99.98%, and the oxygen content is ≤10ppm. Conductivity ≥ 100%IACS, in line with TU0 or TU1 standards. Then mill the upper and lower surfaces in the direction of the thickness of the slab to remove the casting defect layer with defects such as pores, inclusions, and cold shuts on the surface of the slab. Double-sided milling can be used for milling, and the blade is made of hard alloy YG8. Inlaid inserts, the milling depth of one side is 0.6mm,...

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Abstract

The invention discloses a manufacturing technology of a copper strip for a photovoltaic solar device. According to a soft state finished copper strip obtained through the manufacturing technology, the content of Cu + Ag in the copper strip is larger than or equal to 99.98%, the oxygen content is smaller than or equal to 10ppm, the electric conductivity is larger than or equal to 100%IACS, and excellent electric conductivity and excellent thermal conductivity are achieved. The soft state finished copper strip also has a good comprehensive mechanical property, high tolerance precision and excellent surface quality, meets the performance requirement and the precision requirement for the copper strip in photovoltaic solar energy industries, and can be widely applied to manufacturing of interconnecting strips and confluence belts of the photovoltaic solar device.

Description

[0001] technical field [0002] The invention relates to a production process of a copper strip, in particular to a production process of a copper strip for photovoltaic solar energy. [0003] Background technique [0004] As a kind of renewable energy, solar energy will become an important part of the future energy structure. Copper tape is an important electrical and thermal conductive raw material for solar energy. It is usually used to manufacture interconnection strips and busbars for solar devices. It is required to have good thermal conductivity, easy tinning, and high standard dimensional tolerance and surface quality. The requirements for copper strip in the industry standard are: tensile strength ≥ 210MPa, elongation ≥ 20%, HV ≤ 52, tolerance accuracy of ± (0.003-0.004) mm, due to its high performance, tolerance and surface quality requirements, processing is difficult , it is difficult to obtain copper strip products that meet the requirements. [0005] Cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
Inventor 朱荣华苏平冯忠强殷明亮
Owner 江苏富威科技股份有限公司
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