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Packaging method for large area light weight solar battery

A technology for a solar cell and a packaging method, applied in the field of solar cells, can solve the problems of incompatibility, fragile glass, and large quality of the battery panel, and achieve the effects of good surface impact resistance and weight reduction.

Active Publication Date: 2008-01-30
安吉大成太阳能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of packaged solar cell module is suitable for large-area and high-power occasions. The disadvantage is that the glass and battery sheets are easily broken, and the overall mass of the battery panel is relatively large, so it is not suitable for use in occasions that require weight
The disadvantage of this method is that the outermost glass is relatively easy to break when it is impacted, which will cause damage to the solar cells. At the same time, the mass of the entire solar panel assembly is relatively large, so it is not suitable for occasions with strict weight requirements. use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] (1) The solar cell silicon wafers to be packaged are connected in series in rows;

[0014] (2) Stacked in the following order from top to bottom: EVA, solar cells, EVA, PVF film, FR-4 epoxy glass fiber substrate;

[0015] (3) Laminate for 5 minutes, and the lamination temperature is 100°C;

[0016] (4) Perform constant temperature curing at 140° C. for 10 minutes.

[0017] According to this method, 12 pieces of solar battery modules are packaged, 6 pieces are connected in series to form a group, and the two groups are connected in parallel, and installed on a solar electric vehicle, successfully controlling the weight of the vehicle at about 250kg. During the test run, foreign matter impacted the module, leaving obvious marks on the surface EVA, but the solar cells in the module were not damaged, and the whole module can still work normally.

Embodiment 2

[0019] (1) The solar cell silicon wafers to be packaged are connected in parallel in rows;

[0020] (2) Stacked in the following order from top to bottom: EVA, solar cells, EVA, PVF film, FR-4 epoxy glass fiber substrate;

[0021] (3) Laminate for 8 minutes, and the lamination temperature is 100°C;

[0022] (4) Perform constant temperature curing at 146° C. for 7 minutes.

[0023] According to this method, 12 pieces of solar battery modules are packaged, 6 pieces are connected in series to form a group, and the two groups are connected in parallel, and installed on a solar electric vehicle, successfully controlling the weight of the vehicle at about 250kg. During the test run, foreign matter impacted the module, leaving obvious marks on the surface EVA, but the solar cells in the module were not damaged, and the whole module can still work normally.

Embodiment 3

[0025] (1) The solar cell silicon wafers to be packaged are connected in series in rows;

[0026] (2) Stacked in the following order from top to bottom: EVA, solar cells, EVA, PVF film, FR-4 epoxy glass fiber substrate;

[0027] (3) Laminate for 10 minutes, and the lamination temperature is 100°C;

[0028] (4) Perform constant temperature curing at 160° C. for 5 minutes.

[0029] According to this method, 12 pieces of solar battery modules are packaged, 6 pieces are connected in series to form a group, and the two groups are connected in parallel, and installed on a solar electric vehicle, successfully controlling the weight of the vehicle at about 250kg. During the test run, foreign matter impacted the module, leaving obvious marks on the surface EVA, but the solar cells in the module were not damaged, and the whole module can still work normally.

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Abstract

This invention relates to sealing method with large area and solar energy in energy field, which comprises the following steps: a, connecting the sealed solar battery chips by series or by parallel; b, overlapping from top to down in order of EVA, solar battery, EVA, PVF film, PR-4 epoxy glass fiber baseboard; c, laminating for five to ten minutes with temperature of 100 degrees; d, under temperature of 140 to 160 degrees for five to ten minutes for solidifying. This invention improves solar energy battery board with large area and power and removes glass slices and adds solar transparency to improve battery element efficiency.

Description

technical field [0001] The present invention relates to a method in the technical field of solar cells, in particular to a packaging method for large-area and lightweight solar cells. Background technique [0002] There are generally two traditional solar cell packaging methods: epoxy resin packaging and surface glass sheet packaging. Epoxy resin encapsulated solar cells generally have an insulating substrate at the bottom, a solar cell in the middle, and a layer of cured epoxy resin on the top. This type of encapsulated solar cell is resistant to oxidation, high and low temperature, and cold resistance. Good, also resistant to humidity, has a protective effect on battery components, and the service life of the components is relatively long. The disadvantage is that it can only be used in low-power occasions, and it is relatively heavy, so it is not suitable for large-area and high-power conditions. Surface glass sheet encapsulation process component raw materials are PVF, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/18
CPCY02P70/50
Inventor 居小凡陈建平丁麒李川陈关龙
Owner 安吉大成太阳能科技有限公司
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