CN215896416U

CN215896416U - Full-black double-sided photovoltaic module

Info

Publication number: CN215896416U
Application number: CN202122158851.7U
Authority: CN
Inventors: 李世海; 李建国
Original assignee: Shanghai Maidian Technology Co ltd
Current assignee: Shanghai Maidian Technology Co ltd
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2022-02-22
Anticipated expiration: 2031-09-07

Abstract

The utility model discloses a full-black double-sided photovoltaic module which comprises a surface cover plate layer, a first packaging layer, a solar cell layer, a second packaging layer and a back plate layer, wherein the surface cover plate layer, the first packaging layer, the solar cell layer, the second packaging layer and the back plate layer are arranged from top to bottom, the solar cell layer comprises a plurality of cell strings, the cell strings comprise a plurality of double-sided solar cells which are connected in series through welding strips, the cell strings are connected in series or in parallel through convergence strips, and black material layers are arranged on the lower surface of the surface cover plate layer and the upper surface of the back plate layer in partial areas. According to the utility model, the black material layers are arranged on the partial areas of the lower surface of the cover plate layer and the upper surface of the back plate layer on the surface of the component, so that the non-black areas such as welding strips, battery piece gaps, gaps between the battery pieces and the edge of the cover plate layer on the surface of the component are completely shielded, the front surface and the back surface of the component are completely black, and the appearance attractiveness of the component is greatly improved.

Description

Full-black double-sided photovoltaic module

Technical Field

The utility model relates to the technical field of solar energy, in particular to a full-black double-sided photovoltaic module.

Background

Solar energy is more and more concerned as a clean and renewable pollution-free new energy source, the application of the solar energy is more and more extensive, and the most important thing in the utilization of the solar energy is photovoltaic power generation at present. In a specific application, a plurality of solar cells are connected and encapsulated to form a photovoltaic module, and then the plurality of photovoltaic modules are connected in series and in parallel and combined with an inverter, a power distribution cabinet and other devices to form a photovoltaic system.

At present, the widely used photovoltaic module is mainly a single-sided photovoltaic module, but in recent years, with the development of technology, the double-sided module can convert light energy into electric energy by virtue of the front side and the back side of the double-sided module, has lower cost and longer service life, and gradually becomes a main product in the photovoltaic market. The black double-sided photovoltaic module has a completely black appearance, and has better appearance attractiveness when applied to a roof of a building. However, the existing black double-sided module generally uses silver solder strips and silver bus strips, and the solder strips and the bus strips have a reflection effect on light, so that the module cannot achieve a full black effect. The current industry practice is to use black tape to adhere to the solder strips and bus bars, or to shield the bus bars by using black spacers, but these methods are costly and prone to poor assembly due to black tape displacement or black spacer displacement during lamination. Therefore, how to improve the appearance consistency of the black photovoltaic module and ensure the quality and reliability of the module is a technical problem that needs to be solved by those skilled in the art at present.

Disclosure of Invention

In view of the above problems, an object of the present invention is to provide a full-black double-sided photovoltaic module, in which black material layers are disposed on partial regions of the lower surface of a cover plate layer and the upper surface of a back plate layer on the surface of the module, so as to completely shield non-black regions such as solder strips, gaps between battery pieces and the edges of the cover plate layer, and the like in the module, so that the front and back surfaces of the module are fully black, and the appearance attractiveness of the module is greatly improved.

The utility model provides a full black two-sided photovoltaic module, includes from last surface apron layer, first encapsulated layer, solar wafer layer, second encapsulated layer and the backsheet layer that sets up extremely down, solar wafer layer includes a plurality of battery cluster, the battery cluster includes that a plurality of uses welds the two-sided solar wafer that the area was established ties, a plurality of battery cluster uses to converge and takes series connection or parallelly connected, surface apron layer lower surface and backsheet layer upper surface partial region are provided with the black material layer.

The black material layer of the lower surface of the surface cover plate layer is respectively arranged in the gap area corresponding to the welding strip, the gap between the double-sided solar cells and the gap area between the peripheral double-sided solar cells and the edge of the surface cover plate layer, and the black material layer of the upper surface of the back plate layer is arranged in the area corresponding to the welding strip.

The width of the black material layer in the area corresponding to the solder strip is not more than the width of the solder strip, and the width of the black material layer in the area corresponding to the gap between the double-sided solar cells is not more than the width of the gap.

The black material layer is a black film, a black adhesive tape or a black coating.

The thickness of the black material layer is 0.05 mm-0.5 mm.

The back plate layer is toughened glass or a transparent polymer back plate.

The double-sided solar cell is a monocrystalline silicon double-sided cell or a polycrystalline silicon double-sided cell.

The double-sided solar cell is a whole cell or a sliced cell.

The first encapsulation layer and the second encapsulation layer are one of ethylene-vinyl acetate copolymer, polyvinyl butyral, polyolefin, or silicone.

Compared with the prior art, the solar module has the advantages that the black material layers are arranged on the lower surface of the cover plate layer on the surface of the module and the upper surface of the back plate layer in partial areas, and the black material layers respectively correspond to the welding strips, the gaps among the double-sided solar cells, the gaps between the peripheral double-sided solar cells and the edges of the cover plate layer on the surface and other non-black areas in the module, so that the areas are completely shielded, the color difference in the module is avoided, the light reflection phenomenon of the welding strips and the converging strips and the light transmission phenomenon of the gap areas are prevented, the front side and the back side of the module are enabled to have completely black appearances, and the attractiveness of the module is greatly improved.

Drawings

Fig. 1 is a cross-sectional view of a full black double-sided photovoltaic module according to the present invention.

Fig. 2 is a schematic front view of a full-black double-sided photovoltaic module according to the present invention.

Wherein, 1 is the surface apron layer, 2 is first encapsulated layer, 3 are solar wafer layer, 4 are the second encapsulated layer, 5 are the backplate layer, 6 are the battery cluster, 7 are two-sided solar wafer, 8 are the solder strip, 9 are the area of converging, 10 are the black material layer.

Detailed Description

For a further understanding of the technical features and content of the present invention, reference is made to the following description taken in conjunction with the accompanying drawings.

As shown in fig. 1 and 2, a full-black double-sided photovoltaic module includes from last surface apron layer 1, first encapsulated layer 2, solar wafer layer 3, second encapsulated layer 4 and the backsheet layer 5 that sets up extremely down, solar wafer layer includes a plurality of battery cluster 6, the battery cluster includes that a plurality of uses the two-sided solar wafer 7 of 8 series connection of solder strip, a plurality of battery cluster uses the confluence strap 9 to establish ties or connect in parallel. The solar cell sheet layer 3 is packaged in the first packaging layer 2 and the second packaging layer 4 and bonded with the surface cover plate layer 1 and the back plate layer 5 into a whole, the process is completed in a laminating machine, the first packaging layer and the second packaging layer are respectively melted, crosslinked and solidified through vacuum high-temperature pressurization, and finally the materials of the layers are formed into a whole. The first and

second encapsulation layers

2 and 4 are hot melt adhesive materials, which may each be one of ethylene vinyl acetate copolymer, polyvinyl butyral, polyolefin, or silicone, and may be of the same material type or of different material types.

The utility model discloses a solar cell panel, including the surface apron layer, back plate layer upper surface, the black material layer 10 that is provided with in surface apron layer lower surface and back plate layer upper surface subregion, the black material layer of surface apron layer lower surface sets up respectively in corresponding to the clearance between welding area, the two-sided solar wafer and the clearance region between peripheral two-sided solar wafer and the surface apron layer edge, and the black material layer of back plate layer upper surface sets up in corresponding to the region of welding the area. The width of the black material layer in the area corresponding to the solder strip is not more than the width of the solder strip, and the width of the black material layer in the area corresponding to the gap between the double-sided solar cells is not more than the width of the gap. Because the gap region of the double-sided solar cell of the double-sided photovoltaic module and the gap region between the peripheral double-sided solar cell and the edge of the surface cover plate layer are transparent, the black material layer is only required to be arranged in the gap region corresponding to the surface cover plate layer or the back plate layer, and the black effect of the region can be achieved. Through set up the black material layer in the foretell region of subassembly, realized welding the complete sheltering from of non-black region such as the clearance at subassembly internal weld area, two-sided solar wafer clearance, two-sided solar wafer and surface apron layer edge, avoided the inside colour difference of subassembly, prevented simultaneously to weld the reflection of light phenomenon and the regional printing opacity phenomenon in clearance in area, the area of converging for subassembly front and reverse side all have full black outward appearance, have promoted the aesthetic property of subassembly by a wide margin. In addition, the preparation process of the assembly is completely consistent with that of a conventional double-sided photovoltaic assembly, the process is simple, and the production of the full-black double-sided photovoltaic assembly can be realized without additionally increasing production equipment and production procedures.

The above embodiments are merely for illustrative purposes and are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the scope of the present invention. Changes and modifications to the above-described embodiments are intended to fall within the scope of the appended claims, as long as they are within the true spirit of the utility model.

Claims

1. The utility model provides a full black two-sided photovoltaic module, includes from last surface apron layer, first encapsulated layer, solar wafer layer, second encapsulated layer and the backsheet layer that sets up down, its characterized in that: the solar cell slice layer comprises a plurality of cell strings, the cell strings comprise a plurality of double-sided solar cells which are connected in series by using welding strips, the cell strings are connected in series or in parallel by using bus strips, and black material layers are arranged on the lower surface of the surface cover plate layer and the upper surface of the back plate layer in partial areas.

2. The photovoltaic module of claim 1, wherein: the black material layer of the lower surface of the surface cover plate layer is respectively arranged in the gap area corresponding to the welding strip, the gap between the double-sided solar cells and the gap area between the peripheral double-sided solar cells and the edge of the surface cover plate layer, and the black material layer of the upper surface of the back plate layer is arranged in the area corresponding to the welding strip.

3. The photovoltaic module of claim 1, wherein: the width of the black material layer in the area corresponding to the solder strip is not more than the width of the solder strip, and the width of the black material layer in the area corresponding to the gap between the double-sided solar cells is not more than the width of the gap.

4. The photovoltaic module of claim 1, wherein: the black material layer is a black film, a black adhesive tape or a black coating.

5. The photovoltaic module of claim 1, wherein: the thickness of the black material layer is 0.05 mm-0.5 mm.

6. The photovoltaic module of claim 1, wherein: the back plate layer is toughened glass or a transparent polymer back plate.

7. The photovoltaic module of claim 1, wherein: the double-sided solar cell is a monocrystalline silicon double-sided cell or a polycrystalline silicon double-sided cell.

8. The photovoltaic module of claim 1, wherein: the double-sided solar cell is a whole cell or a sliced cell.

9. The photovoltaic module of claim 1, wherein: the first encapsulation layer and the second encapsulation layer are one of ethylene-vinyl acetate copolymer, polyvinyl butyral, polyolefin, or silicone.