Photovoltaic module with integrated light-directing structure on the basis of total internal reflection

A photovoltaic module and light-guiding technology, applied in the field of solar cells, can solve the problems of insecure reflection and achieve high-efficiency reflection and low loss

Inactive Publication Date: 2017-08-18
约阿内研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this document, too, the structures used have essentially the shape of a symmetrical prism and thus do not ensure that light is reflected to the solar cell only in the desired direction

Method used

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  • Photovoltaic module with integrated light-directing structure on the basis of total internal reflection
  • Photovoltaic module with integrated light-directing structure on the basis of total internal reflection
  • Photovoltaic module with integrated light-directing structure on the basis of total internal reflection

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Embodiment Construction

[0031] figure 1 A photovoltaic module 1 according to the invention is illustrated in detail. Two solar cells 2 arranged at a distance from one another are schematically depicted in this photovoltaic module 1 . in accordance with figure 1 In the embodiment of the photovoltaic module 1, it can be seen that the edge region 3 of the photovoltaic module 1 does not contain any solar cells 2 and that this edge region 3 cannot contribute to the conversion of sunlight into energy. In order to convert as much sunlight hitting this fringe zone 3 into energy as possible, the figure 1 In the depiction of , a plurality of light-guiding structures 4 having the shape of oblique prisms are provided in both edge regions 3 of the photovoltaic module 1 . When light strikes these substantially prismatic structures 4 of the light-guiding element perpendicularly, it is totally internally reflected towards the interior of the photovoltaic module 1, refracted on one of the adjacent prisms, and then...

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Abstract

In a photovoltaic module (1) comprising a plurality of electrically interconnected solar cells (2) embedded in an encapsulation film (5) at least on one side and arranged at a distance from one another, and, if appropriate, a rear-side film (6) and a light-transmissive cover plate, light-guiding films forming prism-like structures (4) are integrated in regions of the photovoltaic module (1) that are free of solar cells (2) and the prism-like structures (4) and complementary air and gas pockets (8) are arranged alternately. The prism-like structures (4) of the light-guiding films are arranged in such a way that light impinging on the light-guiding, prism-like structures (4) is guided in the direction of the solar cells (2). An encapsulation film (5) is arranged on both sides of the solar cell and the light-guiding film forming prism-like structures (4) is arranged within the encapsulation film (5), and the light-guiding films forming prism-like structures (4) are covered, if appropriate, by a transparent polymer film (6, 12).

Description

technical field [0001] The invention relates to a photovoltaic module comprising on at least one side arranged at a distance from each other and embedded in an encapsulation material, in particular an encapsulation film, and possibly a backside film and a light permeable cover sheet of multiple electrically connected solar cells. Background technique [0002] A photovoltaic module generally comprises a plurality of solar cells, which are electrically connected to each other and are arranged in a planar manner in the interior of the photovoltaic module. Between the individual solar cells, and in particular on the edges of the photovoltaic module, there are areas which are not covered by the solar cells and thus not available for using solar energy. The gaps between the individual cells are generally relatively narrow, but the performance of the module is limited by a margin, typically approximately 2 cm wide, which is electrically inactive and currently unusable, so that in ...

Claims

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Application Information

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IPC IPC(8): H01L31/042H01L31/048H01L31/056H01L31/054
CPCH01L31/0543H01L31/0547H01L31/056H01L31/042H01L31/048Y02E10/52H02S40/22H01L31/0481H01L31/0504
Inventor G.佩哈兹B.拉姆普雷奇特C.索梅W.内米茨V.施米特
Owner 约阿内研究院
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