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Heat dissipation type solar cell back film

A solar cell and heat dissipation technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of reducing the insulation of the backplane, affecting the safety and service life of solar cells, and achieving film-forming performance and good thermal conductivity. , Solve the effect of poor processing performance

Active Publication Date: 2014-12-10
乐凯胶片股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The patent with the publication number CN 102306671 A discloses a modified solar cell back sheet, which increases heat dissipation by replacing the ordinary polyester substrate with an aluminum substrate, but the existence of the aluminum sheet will greatly reduce the back sheet. The insulation of the board affects the safety and service life of solar cells

Method used

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  • Heat dissipation type solar cell back film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Take 100kg PET resin, 10kg titanium dioxide (Ti-pure R902), 1kg ultraviolet absorber UV-P, 0.5kg antioxidant 1010, 0.5kg antihydrolysis agent carbodiimide, mix them evenly and add them to the twin-screw extruder to melt Extruded to obtain polyester layer chips.

[0037] Get 100kg of PET resin, 10kg of aluminum nitride particles processed through hyperbranched polyester grafting, and 5kg of graphite processed through hyperbranched polyester grafting, mix them uniformly and add them to a twin-screw extruder for melting and extrusion to obtain the first A thermally conductive polyester layer slice.

[0038] Take 100kg of PET resin and 20kg of aluminum nitride particles that have been grafted with hyperbranched polyester, mix them evenly, and put them into a twin-screw extruder to melt and extrude to obtain slices of the second heat-conducting polyester layer.

[0039] The polyester layer slices obtained above, the first heat-conducting polyester layer slices and the secon...

Embodiment 2

[0042] Take 100kg PET resin, 10kg titanium dioxide (Ti-pure R902), 1kg ultraviolet absorber UV-P, 0.5kg antioxidant 1010, 0.5kg antihydrolysis agent carbodiimide, mix them evenly and add them to the twin-screw extruder to melt Extruded to obtain polyester layer chips.

[0043] Get 100kg of PET resin, 16kg of alumina particles processed through hyperbranched polyether grafting, and 4kg of aluminum powder processed through hyperbranched polyether grafting, mix them uniformly and add them to a twin-screw extruder for melting and extrusion to obtain the first A thermally conductive polyester layer slice.

[0044] Take 100kg of PET resin and 5kg of silicon carbide particles grafted with hyperbranched polyether, mix them evenly, and put them into a twin-screw extruder to melt and extrude to obtain slices of the second heat-conducting polyester layer.

[0045] The polyester layer slices obtained above, the first heat-conducting polyester layer slices and the second heat-conducting p...

Embodiment 3

[0048] Take 100kg PET resin, 10kg titanium dioxide (Ti-pure R902), 1kg ultraviolet absorber UV-P, 0.5kg antioxidant 1010, 0.5kg antihydrolysis agent carbodiimide, mix them evenly and add them to the twin-screw extruder to melt Extruded to obtain polyester layer chips.

[0049] Get 100kg of PET resin, 2.5kg of aluminum nitride particles processed by hyperbranched polysiloxane grafting, and 2.5kg of graphite processed by hyperbranched polysiloxane grafts, mix them evenly and add them to the twin-screw extruder Melt extrusion to obtain slices of the first heat-conducting polyester layer.

[0050] Take 100kg of PET resin and 30kg of aluminum nitride particles grafted with hyperbranched polysiloxane, mix them evenly, and put them into a twin-screw extruder to melt and extrude to obtain slices of the second heat-conducting polyester layer.

[0051] The polyester layer slices obtained above, the first heat-conducting polyester layer slices and the second heat-conducting polyester la...

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Abstract

The invention relates to a heat dissipation type solar cell back film. The film comprises a weather-proof layer, a base material and an adhesive layer, wherein the base material is made from a heat dissipation type polyester film, and the heat dissipation type polyester film is formed by successively placing a polyester layer, a first heat conducting polyester layer and a second heat conducting polyester layer from top to bottom. The first heat conducting polyester layer contains first heat conducting particles occupying 5%-20% polyester weights of the first heat conducting polyester layer, the second heat conducting polyester layer contains second heat conducting particles occupying 5%-30% polyester weights of the second heat conducting polyester layer, and surface grafting treatment is performed on the first heat conducting particles and the second heat conducting particles by a hyperbranched polymer. The heat dissipation type solar cell back film has the advantages that the heat dissipation property, the heat conducting property and the film forming property are good; the heat quantity generated by a solar cell module is discharged in time; the operating temperature of a solar cell is reduced; the transfer efficiency of the solar cell is improved; and the service life of the solar cell is prolonged.

Description

technical field [0001] The invention relates to the field of new energy, in particular to a heat dissipation solar cell back film. Background technique [0002] A solar cell is a device that directly uses solar energy and converts it into electrical energy through the photovoltaic effect. It mainly uses sunlight in the wavelength range of 400-1100nm for photoelectric conversion, and part of it is converted into electrical energy, and the other part is converted into thermal energy. Infrared rays with a wavelength greater than 1100nm in sunlight do not undergo photoelectric conversion, but are directly converted into heat energy, and these two parts of heat energy heat up the interior of the solar module. The temperature coefficient of a general crystalline silicon solar cell is between -0.4 to -0.5% / °C, that is, the working efficiency of the solar cell decreases as the temperature of the component increases. Therefore, improving the heat dissipation of the solar cell module...

Claims

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Application Information

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IPC IPC(8): H01L31/049H01L31/052B32B27/36B32B27/20
CPCY02E10/50H01L31/052B32B27/20B32B27/36
Inventor 杨辉王莉梁宏陆林浩杰李亚钊李华锋
Owner 乐凯胶片股份有限公司
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