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A kind of high reflectivity black solar battery back plate and preparation method thereof

A technology of solar cells and high reflectivity, applied in the field of solar cells, can solve problems such as potential safety hazards and low photoelectric conversion efficiency, and achieve the effects of improving production efficiency, simple and efficient preparation methods, and convenient operation and control

Active Publication Date: 2021-10-22
SUZHOU MINGGUAN NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Carbon black absorbs basically all human-visible light. In addition, carbon black also absorbs near-infrared red light with a wavelength of about 700 nm to 1100 nm. Therefore, the existing ordinary black backplane can basically absorb the photoelectric effect of crystalline silicon on sunlight. energy, which causes the photoelectric conversion efficiency of the black module to be lower than that of the white module, and because the black module absorbs more light energy, it will increase the temperature of the backplane and eventually increase the operating temperature of the entire photovoltaic module, causing safety hazards

Method used

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  • A kind of high reflectivity black solar battery back plate and preparation method thereof
  • A kind of high reflectivity black solar battery back plate and preparation method thereof
  • A kind of high reflectivity black solar battery back plate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A high-reflectivity black solar battery backsheet, comprising a weather-resistant layer 1, an adhesive layer 2, and a black reflective layer 3 arranged sequentially from top to bottom, the thickness of the black reflective layer 3 is 20 μm, and the black reflective layer 3 Comprising the following raw materials in parts by weight:

[0051] 20 parts of the first polyolefin resin

[0052] 15 parts of the first bonding resin

[0053] 10 parts of black functional masterbatch.

[0054] Each part of the black functional masterbatch includes the raw materials of the following parts by weight:

[0055] 5 parts of the second polyolefin resin

[0056] 5 parts of the second adhesive resin

[0057] 40 parts of black additives.

[0058] Each part of the first polyolefin resin is a mixture of polyethylene, cross-linked polyethylene and ethylene-propylene copolymer in a weight ratio of 0.8:0.6:0.4.

[0059] Each part of the second polyolefin resin is a mixture of polyethylene, c...

Embodiment 2

[0077] A high-reflectivity black solar cell backsheet, comprising a weather-resistant layer 1, an adhesive layer 2 and a black reflective layer 3 arranged in sequence from top to bottom, the thickness of the black reflective layer 3 is 102 μm, and the black reflective layer 3 Comprising the following raw materials in parts by weight:

[0078] The first polyolefin resin 38 parts

[0079] 33 parts of the first bonding resin

[0080] 13 parts of black functional masterbatch.

[0081] Each part of the black functional masterbatch includes the raw materials of the following parts by weight:

[0082] 10 parts of the second polyolefin resin

[0083] 10 parts of the second bonding resin

[0084] 54 parts of black additives.

[0085] Each part of the first polyolefin resin is a mixture of polyethylene, cross-linked polyethylene and ethylene-propylene copolymer in a weight ratio of 0.9:0.7:0.5.

[0086] Each part of the second polyolefin resin is a mixture of polyethylene, chlorin...

Embodiment 3

[0104] A high-reflectivity black solar cell backsheet, comprising a weather-resistant layer 1, an adhesive layer 2, and a black reflective layer 3 arranged sequentially from top to bottom, the thickness of the black reflective layer 3 is 185 μm, and the black reflective layer 3 Comprising the following raw materials in parts by weight:

[0105] The first polyolefin resin 55 parts

[0106] 51 parts of the first bonding resin

[0107] 17 parts of black functional masterbatch.

[0108] Each part of the black functional masterbatch includes the raw materials of the following parts by weight:

[0109] 15 parts of the second polyolefin resin

[0110] 15 parts of the second bonding resin

[0111] 65 parts of black additives.

[0112] Each part of the first polyolefin resin is a mixture of polyethylene, cross-linked polyethylene and ethylene-propylene copolymer in a weight ratio of 1.0:0.8:0.6.

[0113] Each part of the second polyolefin resin is a mixture of polyethylene, chlor...

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Abstract

The invention relates to the technical field of solar cells, in particular to a high-reflectivity black solar cell backplane and a preparation method thereof. The solar cell backplane comprises a weather-resistant layer, an adhesive layer and a black reflective layer sequentially arranged from top to bottom. The black reflective layer includes the following raw materials in parts by weight: 20-90 parts of a first polyolefin resin, 15-90 parts of a first adhesive resin, and 10-25 parts of a black functional masterbatch. The backplane of the present invention can have a reflectivity of 25-80% for near-infrared light of 700-1100 nanometers, and can reflect the near-infrared light to crystalline silicon, thereby improving the solar cell backplane's absorption and conversion efficiency of the solar spectrum. In addition, the The preparation method is simple and efficient, the operation and control are convenient, and the quality of the produced product is high, which is favorable for industrialized production, and at the same time, the absorption and conversion efficiency of the prepared solar cell back sheet to the solar spectrum is improved.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a high-reflectivity black solar cell back plate and a preparation method thereof. Background technique [0002] Where photovoltaic modules are currently integrated into building structures, their backsheets are usually dark in color, such as black, to allow the photovoltaic modules to blend in with the existing building colour, usually by coating with pigmented carbon black or iron oxide The dark or even black appearance of the backsheet can be produced by mixing these pigments with the constituent materials of the backsheet during the backsheet manufacturing process. Carbon black absorbs basically all human-visible light. In addition, carbon black also absorbs near-infrared red light with a wavelength of about 700 nm to 1100 nm. Therefore, the existing ordinary black backplane can basically absorb the photoelectric effect of crystalline silicon on sunlight. Energy, which ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/049H01L31/048H01L31/054H01L31/18C08J5/18C08J3/22C08L23/06C08L23/16C08L23/28C08L23/08
CPCC08J3/226C08J5/18C08J2323/06C08J2423/06C08J2423/08C08J2423/16C08J2423/28H01L31/0481H01L31/18H01L31/1804H01L31/049H01L31/0547Y02E10/52Y02E10/547
Inventor 王有富徐海燕邱骏卢稳张鹏
Owner SUZHOU MINGGUAN NEW MATERIAL TECH CO LTD
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