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Flexible thin film solar cell and packaging method thereof

A technology of solar cells and flexible films, applied in chemical instruments and methods, circuits, photovoltaic power generation, etc., can solve problems such as battery weight, reduce quality, improve photoelectric conversion efficiency, and facilitate transmission.

Inactive Publication Date: 2011-11-23
上海联孚新能源科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of this packaging method is that it can be made into a light-transmitting BIPV (Building Integrated Photovoltaic, Building Integrated Photovoltaic) module, and can even be made translucent by matching the process. However, because there are two pieces of glass, the packaged battery is relatively heavy.

Method used

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  • Flexible thin film solar cell and packaging method thereof
  • Flexible thin film solar cell and packaging method thereof
  • Flexible thin film solar cell and packaging method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] a. According to the process requirements, the cutting size is 35×35cm 2 Teflon plastic film and EVA cross-linked layer, use 95% alcohol to clean the surface of Teflon plastic film;

[0055] b. According to figure 1 In the five-layer structure shown, one layer of Teflon plastic film and one layer of EVA cross-linked layer are arranged in sequence;

[0056] c. Use a welding machine to connect the 3 unit cells together with a welding strip in the order of positive and negative poles;

[0057] d. According to the process requirements, arrange the battery strings welded in step c on the EVA cross-linked layer completed in step b in turn, and connect the positive and negative electrodes of the solar cell strings in sequence with welding tape through a welding machine to lead out the positive and negative electrodes pole terminal;

[0058] e. Arrange one deck of EVA cross-linked layer and one deck of Teflon plastic film successively on the solar cell string that step d is f...

Embodiment 2

[0063] According to the method in Example 1, except that the following steps are modified, other steps are identical.

[0064] f. Put the 5-layer structure completed in step e into a fully automatic laminator, vacuumize for 10 minutes, heat at 125°C, and laminate for 35 minutes.

[0065]

Embodiment 3

[0067] According to the method in Example 1, except that the following steps are modified, other steps are identical.

[0068] f. Put the 5-layer structure completed in step e into a fully automatic laminator, vacuumize for 15 minutes, heat at 130°C, and laminate for 30 minutes.

[0069]

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Abstract

The invention discloses a flexible thin film solar cell, which comprises a solar cell layer and a packaging layer, wherein the packaging layer comprises a first packaging layer and a second packaging layer; the solar cell layer is packaged between the first packaging layer and the second packaging layer; and the packaging layer consists of a first ethylene vinyl acetate (EVA) crosslinking layer, a second EVA crosslinking layer, a first Teflon layer and a second Teflon layer. The invention also provides a packaging method, which comprises the following steps of: 1, arranging the first Teflon layer, the first EVA crosslinking layer, the solar cell layer, the second EVA crosslinking layer and the second Teflon layer in turn to form a five-layer structure; and 2, laminating and packaging the five-layer structure in the step 1. In the flexible thin film solar cell manufactured by the packaging method, Teflon plastic layers are introduced to serve as packaging materials, so that the photoelectric conversion efficiency of the solar cell is obviously improved, and the cost of packaging the solar cell is reduced.

Description

technical field [0001] The invention relates to the field of thin-film solar cells, in particular to a flexible thin-film solar cell with high photoelectric conversion efficiency and a packaging method thereof. Background technique [0002] Due to the depletion of traditional energy and the increasingly serious energy crisis, it has become an inevitable trend for new energy to replace traditional energy. As an inexhaustible, clean and non-polluting green energy, solar energy has become one of the most dynamic research fields for its effective development and utilization. The first-generation solar cells are crystalline silicon solar cells, and the second-generation solar cells are thin-film solar cells. [0003] For thin-film solar cells, in order to protect the cells against mechanical stress, exposure to sunlight and moisture, the cells connected in series are embedded in a transparent encapsulation material, which at the same time provides electrical insulation for the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/048H01L31/18B32B27/08B32B27/30B32B7/12
CPCY02E10/50Y02P70/50
Inventor 苏青峰赖建明张根发冯世军韩新江
Owner 上海联孚新能源科技集团有限公司
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