Method for preparing solar cell assembly

A technology of solar cells and solar cells, applied in electrical components, circuits, photovoltaic power generation, etc., can solve problems such as the decline in yield of solar cell components, residual solar cell components, and degradation of solar cell performance, and achieve high practical value and easy The effect of achieving, reducing the likelihood

Inactive Publication Date: 2012-09-12
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention overcomes the problems such as residual air bubbles, fragments of solar cells, and uneven binder in the solar cell components that are likely to be caused by adopting the existing preparation method to prepare the solar cell components of the hard backboard, which leads to a decline in the performance of the solar cells and causes solar cell The yield rate of battery components decreases, resulting in huge waste and low production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Between the arc-shaped glass light-transmitting upper cover plate with an arch height of 20mm, a size of 1115mm*998mm, and a thickness of 2.0mm, and an arc-shaped glass hard back plate with an arch height of 20mm, a size of 1115mm*998mm, and a thickness of 1.6mm Set up a solar cell square array composed of 6 rows of solar cells in two strings and three in parallel. The size of the cells is 125mm*62.5mm, a total of 84PCS, the design voltage is 14V, and the distance between the solar cells is 2mm. The square array is 961mm*820mm, and a PVB layer with a thickness of 0.76mm is set between the curved glass light-transmitting upper cover plate and the solar cell, and between the solar cell and the curved glass hard backboard, and the 5 layers are stacked in sequence. Wrap a rubber sealing sleeve with air holes around the edge of the stacked 5 layers, and use a vacuum pump to evacuate from the air holes at -101KPa for 10 minutes, the pumping rate is 10KPa / min, the vacuum degree...

Embodiment 2

[0025] Adopt the same method as Example 1 to prepare the solar cell module, the difference is that the pressure of the high temperature and high pressure treatment is 1.5MPa, the appearance of the prepared solar cell is perfect, there are no bubbles, aerosols, microbubbles, etc. in the solar cell module, and the solar cell The sheet has no fragments, and the bonding between the layers is perfect, and the efficiency of the prepared solar cell module is 15.5%.

Embodiment 3

[0027] Adopt the same method as Example 1 to prepare solar cell modules, the difference is that the pressure of high temperature and high pressure treatment is 0.5MPa, the appearance of the solar cells prepared in Example 3 is perfect, there are no bubbles, aerosols, microbubbles, etc. in the solar cell modules, And the solar battery sheet has no fragments, and the bonding between the layers is perfect, and the efficiency of the prepared solar battery module is 14%.

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PUM

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Abstract

The invention provides a method for preparing a solar cell assembly, comprising the steps of: a, carrying out cold vacuumizing and thermal vacuumizing on a glass plate, a bonding agent layer, a solar cell plate, a bonding agent layer and a hard back plate which are sequentially overlapped, wherein the cold vacuumizing refers to vacuumizing at the temperature below 0-50 DEG C, and the thermal vacuumizing refers to vacuumizing at the temperature of 50-200 DEG C; and b, carrying out high temperature and high pressure treatment on a vacuumized product obtained in the step a, wherein the temperature for the high temperature and high pressure treatment is 100-200 DEG C and the pressure intensity is 0.5-1.5MPa. The method can greatly improve the production rate of common products and reduce air bubbles in the process of packaging the solar cell assembly very well, and is simple to complement; and the prepared solar cell assembly has more perfect appearance.

Description

technical field [0001] The invention relates to a method for preparing a solar battery module. Background technique [0002] The large consumption and limited storage of traditional energy such as oil, and the serious pollution to the environment have made clean energy such as wind energy and solar energy more and more the development trend of existing energy sources, especially solar energy is less restricted by regions, and The abundance of energy has increasingly become the focus and focus of existing research. [0003] The solar cell module is a component that receives light and provides electric energy. It is the core component of a solar cell. It has high requirements. The preparation of a solar cell module with excellent performance is the focus of research. Laminate glass / adhesive layer / cell sheet / adhesive layer / flexible backsheet in sequence, heat and laminate after sequentially stacked to form a solar cell module with good airtightness. [0004] In the prior art,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/18H01L31/0203H01L31/0224H01L31/048
CPCY02B10/12Y02E10/50Y02P70/50
Inventor 罗辉
Owner BYD CO LTD
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