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Conductive lead-free tin alloy -coated copper belt for solar photovoltaic cell

A photovoltaic cell, tin alloy technology, applied in the direction of metal/alloy conductors, circuits, electrical components, etc., can solve the revelation that the combination of Si, P and Cu, Ti is not disclosed, the technical solution that contains Cu and Ti at the same time is not disclosed, and there is no disclosure. Alloy mechanical properties, physical properties test data reports and other issues, to achieve the effect of dense crystallization, lower production costs, and increased strength

Inactive Publication Date: 2010-07-28
昆明三利特科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there is an embodiment of adding 0.7% Cu and 0.01% Ti, there is no disclosure of a technical solution containing Cu, Ti, Si, and P at the same time, nor is there any revelation of combining Si, P, Cu, and Ti, and there is no Test data reports on the mechanical properties and physical properties of the alloy

Method used

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  • Conductive lead-free tin alloy -coated copper belt for solar photovoltaic cell
  • Conductive lead-free tin alloy -coated copper belt for solar photovoltaic cell
  • Conductive lead-free tin alloy -coated copper belt for solar photovoltaic cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Such as figure 1 with 2 As shown, 1 in the figure is a copper strip, and 2 is a tin alloy layer wrapped on the outside of the copper strip. Said tin alloy layer is clad on the copper strip by hot dip coating method. The total thickness of the tin alloy copper strip is 0.05mm, the width is 0.10mm, and the thickness of the tin alloy layer is 0.015mm. The composition of the tin alloy layer is calculated by weight %: Cu1.00, Ti0.05, Si0.05, P0.05, and the balance is Sn.

Embodiment 2

[0018] The situation is basically the same as in Example 1, except that the total thickness of the tin-alloy-coated copper strip is 0.16mm, the width is 2.0mm, and the thickness of the tin-alloy layer is 0.032mm. The composition of the tin alloy layer is calculated by weight %: Cu0.10, Ti0.30, Si0.01, P0.20, and the balance is Sn.

Embodiment 3

[0020] The situation is basically the same as in Example 1, except that the total thickness of the tin-alloy-coated copper strip is 0.2mm, the width is 8mm, and the thickness of the tin-alloy layer is 0.04mm. The composition of the tin alloy layer is calculated by weight %: Cu2.00, Ti0.01, Si0.50, P0.8, and the balance is Sn.

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Abstract

The invention discloses a conductive lead-free tin alloy-coated copper belt for a solar photovoltaic cell. The conductive lead-free tin alloy-coated copper belt for the solar photovoltaic cell consists of a copper belt (1) and a tin alloy layer (2) coated outside the copper belt (1), and is characterized in that the tin alloy layer (2) comprises the following components in percentage by weight: 0.10 to 2.00 percent of Cu, 0.01 to 0.30 percent of Ti, 0.01 to 0.50 percent of Si, 0.05 to 0.8 percent of P, and the balance of Sn. The tin alloy coating of the lead-free tin alloy-coated copper belt of the invention contains no lead, so that the material reduces the damage to human health and the pollution to the environment in the production and application processes of the material, has remarkable environmental protection advantages, and adapts to international lead-free, environmental protection and green resource trend. The lead-free tin alloy-coated copper belt of the invention is mainly used as a conductive functional component material of the solar photovoltaic cell.

Description

technical field [0001] The invention relates to solar photovoltaic cell functional component materials, in particular to a conductive lead-free tin-coated alloy copper strip for solar photovoltaic cells. Background technique [0002] Due to the shortage of energy resources, human beings must develop new energy sources and high-efficiency energy-saving materials as soon as possible. This is a major issue that must be solved in the 21st century. Clean and renewable solar energy is valued globally. Therefore, the research and development of solar cells is one of the key research and development directions of the world's scientific and technological circles and industrial circles. At present, the tin-alloyed copper strips used as photovoltaic cell functional component materials in the solar cell market are mostly lead-containing tin alloys, which brings unavoidable problems in the production and use of tin-coated copper strips. Lead pollution and poisoning problems are not cond...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/02H01B1/02
Inventor 刘雅洲李志平刘颖绚刘璐刘艳绚
Owner 昆明三利特科技有限责任公司
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