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solar cell module

A technology of solar cells and components, applied in the direction of electrical components, circuits, photovoltaic power generation, etc., can solve the problems of light guide film 200 folding and so on

Inactive Publication Date: 2021-07-09
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Therefore, there is an urgent need to solve the problem that the light guide film 200 is easily folded during the module lamination process when a thinner light guide film 200 is arranged on the solar cell surface

Method used

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[0063] Electron beam irradiation was used to crosslink the adhesive. The light guide film uses ethylene-vinyl acetate copolymer (EVA) (eg, extrudable ethylene-vinyl acetate copolymer resin Elvax 3175 or Elvax 3180 produced by DuPont, Wilmington, Delaware, USA) as an adhesive. The adhesive was exposed to an electron beam processor at 120 kV, 7.5 Mrad, and a line speed of 200 feet per minute. Lamination tests showed that with the treated light directing film, there was little displacement. Gel content was used as a measure for crosslinking effectiveness according to ASTM D2765-01 "Standard Test Method for Gel Content and Swelling of Crosslinked Ethylene Plastics". Six replicates with cross-linked adhesive and six replicates with non-cross-linked adhesive were tested. Table 1 lists the gel content results.

[0064] Gel content% Adhesive type 58.54％ Cross-linked 63.52％ Cross-linked 61.57％ Cross-linked 53.72％ Cross-linked 58.66％ Cross-li...

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Abstract

The present invention provides a solar cell assembly, which includes a plurality of solar cells, a light-transmitting element arranged on the light-facing side of the plurality of solar cells, a Between the front encapsulation layer, a plurality of welding ribbons arranged on the light-facing surface of the plurality of solar cells for connecting the plurality of solar cells, and at least one of the welding ribbons arranged on the solar cell A light-guiding film on part of the battery, said light-guiding film comprising an optical structure layer facing said light-transmitting element for reflecting light toward an interface between said light-transmitting element and air, and said light is then absorbed by The interface is totally internally reflected to the surface of the solar cell, wherein the thickness of the light guide film is between 20 μm and 115 μm, and the grammage of the front encapsulation layer is 400 g / m 2 up to 520g / m 2 between. The solar cell assembly has high strength and high power generation efficiency.

Description

technical field [0001] The invention relates to the field of photovoltaic products, in particular to a solar cell module. Background technique [0002] figure 1 Shown in is a typical solar module such as figure 1 As shown in , the solar cell assembly includes a plurality of solar cells 110 (due to illustration, figure 1 Only one of the solar cells 110), the front encapsulation layer 400, the rear encapsulation layer 500, the light-transmitting element 300, and the back plate or back plate glass 600 are shown in the cross-sectional view of the figure, and the plurality of solar cells 110 are composed of a plurality of welding ribbons 120, the plurality of solder ribbons 120 are generally made of copper. In practice, the light-transmitting element 300 is generally made of high-strength tempered glass, the front encapsulation layer 400 and the rear encapsulation layer 500 are generally made of ethylene-vinyl acetate copolymer (commonly known as "EVA") material, and the back ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/054H01L31/05H01L31/048
CPCH01L31/048H01L31/05H01L31/054H01L31/0547Y02E10/52
Inventor 马家颍蒂莫西·尼尔·纳鲁姆马克·布莱恩·奥尼尔聂其红万雨挺
Owner 3M INNOVATIVE PROPERTIES CO