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High-reflectivity black solar cell backboard and preparation method thereof

A technology of solar cells and high reflectivity, applied in the field of solar cells, can solve the problems of low photoelectric conversion efficiency and potential safety hazards, and achieve the effects of inhibiting the UV light damage process, excellent bonding performance, and improving the conversion efficiency of solar spectrum absorption.

Active Publication Date: 2020-09-18
SUZHOU MINGGUAN NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology describes an improved method called Black Solar Battery Backsheets (BSB) with special layers made from materials like acrylic acid polymers mixed together. These coatings help absorb sunlight more efficiently while still being durable over time without losing their ability to function properly. By controlling these factors, this new design improves the quality and lifespan of SBC components such as laminates, electrodes, solder masks, etc., resulting in longer outdoor use times and increased overall functionality of the component.

Problems solved by technology

This technical problem addressed in this patents relates to improving solar cell performance when integrated onto buildings due to its darkness (black) colored rear sheet material used for integration purposes. However, current methods involve adding special chemicals like carbon black to improve heat dissipation without affecting visual appeal.

Method used

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  • High-reflectivity black solar cell backboard and preparation method thereof
  • High-reflectivity black solar cell backboard and preparation method thereof
  • High-reflectivity black solar cell backboard and preparation method thereof

Examples

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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 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 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, ch...

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 adhesive 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, chlo...

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Abstract

The invention relates to the technical field of solar cells, in particular to a high-reflectivity black solar cell backboard and a preparation method thereof. The solar cell backboard comprises a weather-proof layer, a bonding layer and a black reflecting layer which are sequentially arranged from top to bottom, wherein the black reflecting layer comprises the following raw materials in parts by weight: 20-90 parts of first polyolefin resin, 15-90 parts of first bonding resin and 10-25 parts of black functional master batch. The backboard provided by the invention has the advantages that the reflectivity on near-infrared light with the wavelength of 700 to 1,100 nanometers is 25 to 80 percent; in addition, the preparation method is simple, efficient, convenient to operate and control, highin quality of produced products and beneficial to industrial production, and meanwhile, the solar spectrum absorption and conversion efficiency of the prepared solar cell backboard is improved.

Description

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Claims

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Application Information

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Owner SUZHOU MINGGUAN NEW MATERIAL TECH CO LTD
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