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Method for manufacturing solar double-glass assembly

A double-glass module and solar energy technology, which is applied in the field of solar energy utilization, can solve the problems of low production efficiency, high cell damage rate, and difficulty in overcoming water mark defects, etc., and achieve improved yield, overcome water mark defects and air bubbles, and completely melt Effect

Inactive Publication Date: 2014-12-03
JIANGSU CHENDIAN SOLAR PHOTOELECTRIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For double-glass components used in glass curtain walls, the lamination time in the prior art generally takes more than 3 hours, and the performance indicators of the produced components can meet the requirements of curtain wall construction. This lamination method not only has low production efficiency, but also Moreover, since the starting temperature and the end point temperature are basically the same, the cell damage rate in the module is relatively high. At the same time, it is difficult to overcome the problems of water mark defects, air bubbles and cell displacement in the module.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for preparing a solar double-glass module, comprising the following steps:

[0031] (1) Lay PVB adhesive film, solar cell strings, PVB adhesive film, and surface tempered glass on the bottom tempered glass in sequence to form a solar double-glass module. After the solar cell strings are laid, use bus bars to connect the solar cells chained together as a whole;

[0032] (2) An EL test, through infrared camera imaging, check step (1) whether there are hidden cracks in the solar cells in the double glass module, and remove hidden cracks;

[0033] (3) Place the double-glass component that has passed an EL test in a laminator, vacuumize the laminator, and maintain it at negative atmospheric pressure for 30-40 minutes, and then make the upper chamber of the laminator at -0.5MPA, The lower room is kept at -1MPA for 20-30 minutes, and then the temperature is raised to 140±5°C, at -0.5~-0.6 MPA, kept for 20-30 minutes to soften the PVB film and toughen the batter...

Embodiment 2

[0044] After placing the double-glass assembly on a shelf in the autoclave,

[0045] Heat up to 50°C, pressure 0.4MPA, and maintain for 20 minutes;

[0046] Heat up to 70°C, pressure 0.6MPA, and maintain for 20 minutes;

[0047] Heat up to 90°C, pressure 0.8MPA, and maintain for 15 minutes;

[0048] Heat up to 110°C, pressure 1.0MPA, and maintain for 40 minutes;

[0049] The temperature was raised to 150°C and the pressure was 1.2MPA, and maintained for 10 minutes.

[0050] All the other implementations are as in Example 1.

Embodiment 3

[0052] After placing the double-glass assembly on a shelf in the autoclave,

[0053] Heating up to 50°C, pressure 0.5MPA, and maintaining for 20 minutes;

[0054] Heat up to 70°C, pressure 0.7MPA, and keep for 20 minutes;

[0055] Heat up to 90°C, pressure 0.9MPA, and maintain for 15 minutes;

[0056] Heat up to 110°C, pressure 1.1MPA, and maintain for 40 minutes;

[0057] The temperature was raised to 150°C and the pressure was 1.3MPA, and maintained for 10 minutes.

[0058] All the other implementations are as in Example 1.

[0059] The damage rate of the double-glass components produced in Examples 1-3 was all lower than 1% after testing, and the water mark defects and air bubble defects were all lower than 1% respectively.

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Abstract

The invention discloses a method for manufacturing a solar double-glass assembly. The method includes the following steps that (1) a PVB adhesive film, a solar battery string, a PVB adhesive film and surface layer tempered glass are sequentially laid on bottom layer tempered glass, so that the solar double-glass assembly is formed; (2) whether hidden cracking pieces exist in solar battery pieces of the double-glass assembly in the first step is checked, and the hidden cracking pieces are removed; (3) the double-glass assembly is placed in a laminating machine under the -1 barometric pressure, the process is kept for 30-40 minutes, then an upper chamber of the laminating machine is placed at the pressure of -0.5 MPA, a lower chamber is placed at the pressure of -1 MPA, the process is kept for 20-30 minutes, afterwards, the temperature rises to be 140+ / -5 DEG C, and at the pressure of -0.5 MPA to -0.6 MPA, the process is kept for 20-30 minutes; (4) whether hidden cracking pieces exist in the solar battery pieces of the laminated double-glass assembly is checked, and the hidden cracking pieces are removed; (5) the double-glass assembly is fixed, the double-glass assembly is placed in an autoclave, and after a dehumidifier is used for dehumidifying, under the conditions of 20-150 DEG C and 0-1.3 MPA, the process is kept for 2-4 hours.

Description

technical field [0001] The invention relates to the field of solar energy utilization, in particular to a preparation method of a solar double-glass component used for a curtain wall. Background technique [0002] As an inexhaustible and inexhaustible green energy, solar energy has attracted widespread attention from the whole society in today's energy shortage. With the advancement of solar cell technology and the reduction of material costs, photovoltaic power generation technology has entered maturity, and solar photovoltaic products have gradually developed from special specialized uses to market-oriented consumer products, and their application range has expanded to various fields. Conventional solar modules are made through welding, laying, and lamination processes. The existing lamination process is to place the double-glass modules after laying in a laminator, and after a certain period of time under the set temperature and pressure Finish. For double-glass compone...

Claims

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Application Information

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IPC IPC(8): H01L31/18B32B37/00B32B37/02B32B37/06
CPCH01L22/30H01L31/0488Y02E10/50Y02P70/50
Inventor 张晨康晋锋刘力锋张森林冷钢丁川
Owner JIANGSU CHENDIAN SOLAR PHOTOELECTRIC TECH
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