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Method for laying photovoltaic module

A technology for photovoltaic modules and cells, applied in electrical components, semiconductor devices, sustainable manufacturing/processing, etc., can solve problems such as affecting the quality of finished products, inability to detect debris in real time, and decreasing photoelectric conversion rate of photovoltaic modules.

Inactive Publication Date: 2010-09-08
LIXIAN YINGLI NEW ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] In the preparation method of photovoltaic modules in the prior art, the laying step is to first weld the battery sheets into battery strings, and then bond the battery strings with glass plates and back plates with EVA. Adjustment, and because the semi-finished products cannot be detected during the laying process of photovoltaic modules and the lamination step is directly carried out, the debris phenomenon caused by the hidden cracks of photovoltaic modules cannot be detected immediately, resulting in a decrease in the photoelectric conversion rate of photovoltaic modules and affecting the finished product. quality

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0042] 1. Glass plate pretreatment

[0043] Take tempered glass with a light transmittance greater than 98% and a specification of 1m×0.5m, and the surface of the tempered glass is preferably alcohol-coated in the present invention. After cleaning, dry at 60°C.

[0044] 2. Vacuum evaporation

[0045] The dried glass plate is placed in the vacuum chamber of the vacuum evaporation cabinet, and the pure tin, welding ribbon and confluence strip are placed on the designated positions of the glass plate. Adjust the vacuum degree in the vacuum chamber to 3×10 -4 torr, open the vacuum valve to discharge the air in the vacuum chamber; start the heating device to heat the water in the water storage tank. After the water evaporates, the steam enters the vacuum chamber through the steam port, and the steam temperature is 210°C. When the tin is completely melted, the temperature is lowered slowly, and the solder ribbon and the bus ribbon are fixed on the glass plate

[0046] 3. Laser w...

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Abstract

The invention provides a method for laying a photovoltaic module. The method comprises the following steps of: a) evaporating and plating a solder strip and a bus bar on a glass plate in vacuum; b) welding a battery plate set to the solder strip and the bus bar by using laser to obtain the glass plate welded with the battery plates; c) laying an EVA plate on the battery plate set; and d) laying a back plate on the EVA plate to obtain the laid battery plate. By using the method for laying the photovoltaic module provided by the invention, the glass plate and the battery plate are integrated into a whole; the glass plate is bonded to the battery plate without needing EVA; the thickness of the photovoltaic module is reduced; moreover, the fragments of the battery plate can be detected by using infrared ray after laying and the fragments do not need detecting again after lamination and formation, so that fragmentation rate is reduced and the controllability of the quality of the photovoltaic module is increased.

Description

technical field [0001] The invention relates to the field of photovoltaic module preparation, in particular to a method for laying photovoltaic modules. Background technique [0002] A photovoltaic cell or solar cell is a device that directly converts light energy into electrical energy through the photoelectric effect or photochemical effect. A group of photovoltaic cells that combine solar cells and other auxiliary materials to achieve a certain rated output power and output voltage is called a photovoltaic module. According to the size and scale of photovoltaic power plants, photovoltaic modules can form arrays of various sizes. The extensive application of photovoltaic cells promotes the utilization and development of new energy sources, reduces the amount of coal power generation, and reduces the emission of greenhouse gases such as carbon dioxide and sulfur dioxide, thereby saving non-renewable resources and protecting the environment. [0003] The manufacture of tra...

Claims

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Application Information

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IPC IPC(8): H01L31/18
CPCY02P70/50
Inventor 王士元
Owner LIXIAN YINGLI NEW ENERGY CO LTD
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