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Photovoltaic solar cell module ribbon

A technology for solar cells and welding strips, applied in photovoltaic power generation, electrical components, circuits, etc., can solve problems such as reducing the conductivity of the welding surface, increasing the manufacturing cost and difficulty of welding strips, and prone to false welding, and improving the power of components. , Improve welding contact and reduce the effect of virtual welding

Inactive Publication Date: 2017-02-01
刘畅
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing welding strips have the following defects: (1) The surface of the welding strip needs to be tinned, which increases the manufacturing cost and difficulty of the welding strip; (2) Due to the tinning on the surface of the welding strip, the conductivity of the welding surface is reduced; ( 3) In the existing welding process of crystalline silicon cells, using traditional electric soldering iron or series welding machine to weld tin-plated copper strips is prone to false welding

Method used

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  • Photovoltaic solar cell module ribbon
  • Photovoltaic solar cell module ribbon
  • Photovoltaic solar cell module ribbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as Picture 1-1 As shown, the photovoltaic solar cell module ribbon includes a ribbon body 1, and the front and back surfaces of the ribbon body 1 are both plane.

[0032] Such as Figure 1-2 As shown, through-holes 2 of various sizes and shapes can also be processed on the welding ribbon body 1 by rolling or stamping, and the through-holes 2 are arranged side by side in the width direction of the welding ribbon body 1. The diameter d of the through hole 2 is 0.1-0.5mm.

Embodiment 2

[0034] Such as figure 2 As shown, the photovoltaic solar cell module welding ribbon includes a ribbon body 1, and the front and back sides of the ribbon body 1 are sawtooth surfaces with the same shape and size; The number of saw teeth is 5-12, the saw tooth depth is 0.1-0.3mm, the included angle Φ1 between the saw tooth surface and the surface of the ribbon body 1=140°~170°, the sawtooth angle Φ2 of the front and back of the ribbon body 1 =110°~130°.

Embodiment 3

[0036] Such as image 3 As shown, through holes 2 of various sizes and shapes are processed on the ribbon body 1 described in the second embodiment.

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Abstract

The invention relates to a solar cell assembly welding band. The photovoltaic solar cell assembly welding band is characterized by comprising a welding band body, a front face and a back face of the welding band body are sequentially provided with welding faces and non-welding faces alternately, the welding faces are provided with multiple chamber zones denting into surfaces of the welding faces, the chamber zones can greatly improve the contact area of the welding band and solder paste, SMT welding performance is improved, and insufficient welding risks can be greatly reduced compared with the traditional welding band welding technology; solidified column-shaped welding slurry is formed in the chamber zones, mechanical connection and electrical connection of the welding slurry and welding portions can be greatly improved, and exhaustion of air generated by the welding slurry in a welding band welding face in the welding process is facilitated. According to the photovoltaic solar cell assembly welding band, the welding band body employs copper bands or surface-processed copper bands instead of tin-plated welding bands utilized by routine photovoltaic assembly, the welding band body does not require tin-plating surface processing, the welding band body employs the surface passivation treatment process or a non-welding face coating anticorrosion material, or the non-welding surfaces are plated with a reflection material layer.

Description

technical field [0001] The invention relates to a photovoltaic solar cell module soldering ribbon, in particular to a soldering ribbon for the SMT welding process of a photovoltaic solar crystalline silicon cell module. Background technique [0002] Solar cell ribbon, also known as tin-plated copper ribbon or tin-coated copper ribbon, is used for the connection of photovoltaic module cells. Ribbon is an important raw material in the welding process of photovoltaic modules. The quality of the ribbon will directly affect the current collection efficiency of photovoltaic modules and greatly affect the power of photovoltaic modules. The welding ribbon must be firmly welded in the process of connecting the cells in series to avoid the occurrence of false welding and false welding. The existing welding strips have the following defects: (1) The surface of the welding strip needs to be tinned, which increases the manufacturing cost and difficulty of the welding strip; (2) Due to t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/05
CPCY02E10/50
Inventor 刘畅
Owner 刘畅
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