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Photovoltaic module and local concentrating photovoltaic glass used for photovoltaic module

A photovoltaic module and photovoltaic glass technology, which is applied in photovoltaic power generation, electrical components, semiconductor devices, etc., can solve the problems of increased battery loss, low battery welding tension, and reduced light utilization rate, so as to reduce light and improve photoelectric conversion efficiency , Improve the effect of light utilization

Pending Publication Date: 2020-07-28
凤阳硅谷智能有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the production process of photovoltaic solar cell modules, the connection method between multiple single-piece cells is generally connected by ribbon welding, but this connection method causes most of the sunlight irradiated on the module ribbon area to be unable to be absorbed by the battery. Absorbed by the film, resulting in a reduction in light utilization
[0003] In order to reduce the shielding of the light-receiving area of ​​the solar cell by the solder ribbon, the width of the solder ribbon selected in the prior art is relatively narrow, which will lead to a low welding tension of the solar cell and increase the loss of the battery inside the module, so it is necessary to The existing photovoltaic modules are improved with local concentrating glass to improve the light utilization rate of photovoltaic modules

Method used

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  • Photovoltaic module and local concentrating photovoltaic glass used for photovoltaic module
  • Photovoltaic module and local concentrating photovoltaic glass used for photovoltaic module
  • Photovoltaic module and local concentrating photovoltaic glass used for photovoltaic module

Examples

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Comparison scheme
Effect test

Embodiment 1

[0060] Such as Figure 5 As shown, a locally concentrating photovoltaic glass 20 according to an embodiment of the present invention has a length D1 of 700 mm, a width D2 of 678 mm, and a plane length of 15 mm in both sections in the width direction.

[0061] At the same time, a first refracting part 30 is provided on one side of the local concentrating photovoltaic glass 20. The first refracting part 30 is composed of 4 sets of equal-distance refraction units parallel to the length direction of the local concentrating photovoltaic glass. The first refractive part 30 structure with the same and equidistant strip shape and the second refractive part 40 structure with two different equidistant shapes on both sides are composed.

[0062] The spacing d of the refractive surfaces 31 of the first refractive part 40 is 31.2mm, the width c of the refractive surface 31 of the first refractive part 30 is 1.8mm, the depth e of the refractive surface 31 of the first refractive part 30 is 0.15mm...

Embodiment 2

[0064] A photovoltaic module 100 according to an embodiment of the present invention includes a front photovoltaic glass 21, a high refractive index encapsulating film, and a battery string.

[0065] Among them, the battery string group is composed of 4×4 battery cells 10 arranged in a matrix in series. The first refractive part 30 on the front photovoltaic glass 21 or the front photovoltaic glass 21 and the back photovoltaic glass 22 corresponds to the welding ribbon 50, and the front photovoltaic glass 21 or The second refractive parts 40 on the front photovoltaic glass 21 and the back photovoltaic glass 22 correspond to the two sides of the battery string. The first refractive part 30 and the second refractive part 40 are parallel to the solder ribbon 50 and the battery string, respectively. The visible light refractive index is 1.52.

[0066] In the photovoltaic module 100, after the light from both sides of the ribbon 50 and the battery string is refracted by the first refract...

Embodiment 3

[0068] First, according to the string arrangement method in Example 2, the double-sided battery strings are arranged, and the partially concentrating photovoltaic glass prepared in Example 1 is used as the back photovoltaic glass 21 to align the battery string with the battery string. A refraction part 30 and a second refraction part 40 respectively cover the area of ​​the ribbon 50 and the two sides of the battery string. The second refraction part 40 covers the edge of the battery string and exposes 1mm, and then completely according to the laminated method of the back photovoltaic glass 22, will have the same The morphology of the front photovoltaic glass 21 is aligned with the battery string group, and finally the morphology of the local concentrating photovoltaic glass prepared in Example 1 is always parallel to the solder ribbon and the edge of the battery on both sides.

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Abstract

The invention discloses a photovoltaic module and local photovoltaic concentrating glass used for the photovoltaic module. The photovoltaic module comprises: a plurality of battery pieces, wherein oneside of each battery piece forms a front light surface, the other side of each battery piece forms a back light surface, at least one of the front light surface and the back light surface is providedwith a plurality of welding strips arranged at intervals, and an area between every two adjacent welding strips or an area between each welding strip and the edge of the corresponding battery piece forms an effective power generation area; front photovoltaic glass, which is arranged on the front light surface; back photovoltaic glass, which is arranged on the back light surface, wherein the sides, facing the battery pieces, of the photovoltaic glass forms light-emitting surfaces, and the sides, back on to the battery pieces, of the photovoltaic glass form light-entering surfaces; and first refraction parts, which are arranged on the light-entering surfaces of the photovoltaic glass and located above the welding strips, wherein light above the welding strips is refracted to the battery pieces through the first refraction parts to form light spots, and the light spots are located in the effective power generation area. According to the photovoltaic module provided by an embodiment of the invention, the structure of a light path can be changed and finally deviated to the effective power generation area, so a light utilization rate is improved.

Description

Technical field [0001] The invention belongs to the technical field of photovoltaic modules, and in particular relates to a photovoltaic module and a locally concentrating photovoltaic glass used therefor. Background technique [0002] At present, in the production process of photovoltaic solar cell modules, the connection between multiple monolithic cells is generally connected by welding with ribbon, but this connection method causes most of the solar light irradiated on the ribbon area of ​​the module to be unable to be used by the battery. The sheet is absorbed, resulting in a decrease in light utilization. [0003] In order to reduce the shielding of the light-receiving area of ​​the cell by the soldering ribbon, the width of the soldering ribbon selected in the prior art is relatively narrow, which will cause the soldering force of the cell to be low, and also increase the loss of the battery inside the module. The existing photovoltaic modules are improved by partially conc...

Claims

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Application Information

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IPC IPC(8): H01L31/05H01L31/054H01L31/048H01L31/068
CPCH01L31/0504H01L31/0543H01L31/0488H01L31/0684Y02E10/547Y02E10/52
Inventor 林垦苏维燕林俊良陈燕平林金锡林金汉
Owner 凤阳硅谷智能有限公司