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A heat-dissipating photovoltaic backplane and its preparation method

A photovoltaic backplane and heat dissipation technology, applied in photovoltaic power generation, chemical instruments and methods, final product manufacturing, etc., can solve the problem of affecting the photoelectric conversion efficiency of cells, the decrease of cell efficiency, and the impact of heat dissipation on the conversion efficiency of solar cells. Service life and other issues, achieve excellent insulation performance and heat dissipation performance, improve bonding performance, and excellent heat dissipation performance

Active Publication Date: 2019-08-09
南通北外滩建设工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The temperature rise of the solar cell module will seriously affect the photoelectric conversion efficiency of the cell, resulting in a significant drop in the efficiency of the cell, so the heat dissipation performance of the solar cell backplane will affect the conversion efficiency and service life of the solar cell

Method used

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  • A heat-dissipating photovoltaic backplane and its preparation method
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  • A heat-dissipating photovoltaic backplane and its preparation method

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preparation example Construction

[0021] The method for preparing a heat-dissipating photovoltaic backplane provided by the present invention includes the following steps:

[0022] 1) A plurality of via holes are respectively formed in the first metal substrate and the third metal substrate, and a plurality of columnar protrusions are respectively formed on the upper surface and the lower surface of the second metal substrate;

[0023] 2) Coat the adhesive on one side of the fluororesin outer weathering layer and the EVA layer respectively, and apply the adhesive on the upper and lower surfaces of the PET layer and the PEN layer respectively, and dry them;

[0024] 3) Laying the fluororesin outer weathering layer on the lower surface of the first metal substrate, laying a PET layer on the upper surface of the first metal substrate, and then laying the second metal substrate on the PET layer, Next, a PEN layer is laid on the upper surface of the second metal substrate, then the third metal substrate is laid on the PEN...

Embodiment 1

[0029] A method for preparing a heat-dissipating photovoltaic backplane includes the following steps:

[0030] 1) A plurality of via holes are respectively formed in the first metal substrate and the third metal substrate, a plurality of columnar protrusions are respectively formed on the upper surface and the lower surface of the second metal substrate, the first metal substrate and the third metal substrate A plurality of via holes in the metal substrate are arranged in a matrix, and a plurality of columnar protrusions on the upper surface and the lower surface of the second metal substrate are arranged in a matrix. The diameter of the via holes is 4 mm. The distance between the columnar protrusions is 8 mm, the diameter of the columnar protrusions is 4 mm, the distance between adjacent columnar protrusions is 8 mm, and the material of the first, second, and third metal substrates is aluminum;

[0031] 2) Apply adhesive to one side of the fluororesin outer weathering layer and on...

Embodiment 2

[0036] A method for preparing a heat-dissipating photovoltaic backplane includes the following steps:

[0037] 1) A plurality of via holes are respectively formed in the first metal substrate and the third metal substrate, a plurality of columnar protrusions are respectively formed on the upper surface and the lower surface of the second metal substrate, the first metal substrate and the third metal substrate A plurality of via holes in the metal substrate are arranged in a matrix, and a plurality of columnar protrusions on the upper surface and the lower surface of the second metal substrate are arranged in a matrix. The diameter of the via holes is 5 mm. The distance between the columnar protrusions is 7 mm, the diameter of the columnar protrusions is 5 mm, the distance between adjacent columnar protrusions is 7 mm, and the material of the first, second, and third metal substrates is copper;

[0038] 2) Apply adhesive to one side of the fluororesin outer weathering layer and one ...

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Abstract

The invention provides a heat-dissipation photovoltaic backplane and a preparation method thereof. The preparation method of the heat-dissipation photovoltaic backplane comprises the steps of 1) respectively forming a plurality of via holes in a first metal substrate and a third metal substrate, and respectively forming a plurality of cylindrical bulges at the upper surface and the lower surface of a second metal substrate; 2) respectively coating the surfaces of a fluororesin outer weather-resistant layer, a PET layer, a PEN layer and an EVA layer with a binding agent, and performing drying treatment; 3) successively laminating the fluororesin outer weather-resistant layer, the first metal substrate,, the PET layer, the second metal substrate, the PEN layer, the third metal substrate andthe EVA layer; and 4) performing thermal compression to obtain the photovoltaic backplane. The photovoltaic backplane prepared according to the method has excellent heat dissipation performance, and thus the stability of a corresponding photovoltaic assembly can be improved.

Description

Technical field [0001] The invention relates to the technical field of photovoltaic cells, in particular to a heat-dissipating photovoltaic backplane and a preparation method thereof. Background technique [0002] Crystalline silicon solar cells are widely used due to their high efficiency and mature manufacturing process. Corresponding crystalline silicon solar modules usually include tempered glass, adhesive layer, cell layer, adhesive layer and solar cell back sheet. The solar cell back sheet is located on the back of the solar cell module, which protects and supports the cells and has a reliable Insulation, water resistance, and aging resistance. The solar cell backsheet is usually a multi-layer composite material, which generally has a three-layer structure. The outer protective layer has good resistance to environmental erosion, the middle layer has good insulation properties, and the inner layer and the solar cell module adhesive layer have good The bonding performance. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/049H01L31/18B32B15/082B32B27/30B32B27/18B32B15/09B32B15/08B32B27/36B32B27/28B32B3/06B32B7/12B32B7/08B32B33/00B32B37/12B32B37/10B32B37/06B32B38/00
CPCB32B3/06B32B7/08B32B7/12B32B15/08B32B15/082B32B15/09B32B27/18B32B27/28B32B27/30B32B27/36B32B33/00B32B37/06B32B37/10B32B37/12B32B38/00B32B2307/302B32B2457/10H01L31/049H01L31/18Y02E10/50Y02P70/50
Inventor 张军
Owner 南通北外滩建设工程有限公司