CN215184006U

CN215184006U - Semi-flexible solar photovoltaic module

Info

Publication number: CN215184006U
Application number: CN202120549803.8U
Authority: CN
Inventors: 潘胜浆; 蒋前哨; 汪浩; 杨立友
Original assignee: Ningbo Sandi Solartech Co ltd
Current assignee: Ningbo Sandi Solartech Co ltd
Priority date: 2021-03-17
Filing date: 2021-03-17
Publication date: 2021-12-14
Anticipated expiration: 2031-03-17

Abstract

The utility model discloses a semi-flexible solar photovoltaic module. It includes lower encapsulated layer, transparent last encapsulated layer and by the polylith battery piece lamellar body that solar wafer cutting formed, polylith battery piece lamellar body carries out the conductive connection through conducting material, each after the connection bond between battery piece lamellar body and the last encapsulated layer and have last encapsulation glued membrane, each after the connection bond between battery piece lamellar body and the lower encapsulated layer and have down encapsulation glued membrane. After the structure is adopted, the packaging materials are all flexible high polymer materials, the assembly has the function of flexibility, and the battery piece is not easy to crack under the long-term bending state of the assembly; the solar cell is a crystalline silicon solar cell, is the most mainstream technology in the photovoltaic industry at present, has the characteristic of high cost performance, and has wide application scenes.

Description

Semi-flexible solar photovoltaic module

Technical Field

The utility model relates to a photovoltaic module, specifically speaking are semi-flexible solar photovoltaic module.

Background

Solar photovoltaic is widely applied as a clean energy source, the conventional crystalline silicon photovoltaic module is mainly packaged by using glass as a front plate material, the glass has the advantages of high light transmittance, high strength and the like, but the rigidity and the density of the glass are large, so that the photovoltaic module cannot be applied to surfaces which are bent or have low bearing capacity. The photovoltaic industry also has crystalline silicon photovoltaic modules which are packaged by replacing glass with polymer plastic films, so that the modules can be bent, but crystalline silicon battery pieces with conventional sizes are used in the modules, the battery pieces are very easy to crack under the influence of stress in the bending modules for a long time, and further the electrical performance of the whole module is influenced, the application range of the modules is limited, and the photovoltaic industry also has flexible film photovoltaic modules which can be applied on the surfaces with bending or low bearing capacity, but the flexible film photovoltaic modules have higher current cost and lower conversion efficiency, and the application range of the modules is limited.

Disclosure of Invention

The to-be-solved technical problem of the utility model provides a have flexible function, the deformation volume that single battery piece received during the bending is little, and the battery piece is difficult cracked and conversion efficiency is high and with low costs semi-flexible solar PV modules also under the state of long-term bending.

In order to solve the technical problem, the utility model discloses a semi-flexible solar photovoltaic module, including lower encapsulated layer, transparent last encapsulated layer and by the polylith battery piece lamellar body that solar wafer cutting formed, polylith battery piece lamellar body carries out the conductive connection through conducting material, each after connecting bond between battery piece lamellar body and the last encapsulated layer and have last packaging adhesive film, each after connecting bond between battery piece lamellar body and the lower encapsulated layer and have lower packaging adhesive film.

The conductive material is a tinned copper strip or conductive adhesive.

The lower packaging layer and the upper packaging layer are both made of high-molecular flexible packaging materials.

The high polymer flexible packaging material is a PET, ETFE, PC or PMMA material.

The upper packaging adhesive film and the lower packaging adhesive film are EVA, POE, PVB or TPU adhesive films.

And each solar cell is cut into a plurality of cell sheets through laser.

The solar cell is a crystalline silicon solar cell.

After the structure is adopted, the conventional large-size crystalline silicon solar cell is cut into a plurality of cell slice bodies by utilizing laser, then all the cut cell slice bodies are connected in series and parallel through a conductive material, and are packaged into a photovoltaic module by using a flexible high polymer packaging material, the packaging material is made of a flexible high polymer material, the module has the function of flexibility and bending, and meanwhile, as the size of the single cell slice is reduced, the deformation of the single cell slice body is reduced when the module is bent, and the stress borne by the single cell slice body is reduced, the cell slice is not easy to crack under the long-term bending state of the module; the solar cell is a crystalline silicon solar cell, is the most mainstream technology in the photovoltaic industry at present, has the characteristic of high cost performance, and has wide application scenes.

Drawings

Fig. 1 is a schematic view of a solar cell cutting process according to the present invention;

fig. 2 is the schematic view of the cross-section structure of the semi-flexible crystalline silicon solar photovoltaic module of the present invention.

Detailed Description

The semi-flexible crystalline silicon solar photovoltaic module of the present invention will be described in further detail with reference to the accompanying drawings and the detailed description.

As shown in the figures, the utility model discloses a semi-flexible crystalline silicon solar photovoltaic module, including the lower encapsulated layer 8 and the transparent upper encapsulated layer 5 that adopt the flexible encapsulating material of the polymer that possesses the function of blocking water to make and a plurality of battery pieces lamellar body 3 that are formed by the infrared laser cutting of conventional large-size crystalline silicon solar cell 1, it is visible by figure 1, in this embodiment, adopt conventional length of side to be 156mm, 166mm, 182mm, 210 mm's crystalline silicon solar cell 1 to cut along the orbit 2 of laser cutting and form a plurality of battery pieces lamellar body 3, a plurality of battery pieces lamellar body 3 play the effect that the photoelectricity was installed and is traded, wherein, the orbit 2 of laser cutting can be according to the corresponding cutting figure of design demand adjustment; the battery piece lamellar body 3 that the polylith formed after the cutting uses tinned copper strip or conducting resin or other materials that play the electrically conductive effect to carry out the electrical connection of series-parallel connection, each after the connection bond between battery piece lamellar body 3 and last encapsulation layer 5 and have encapsulation glued membrane 6, bond between each battery piece lamellar body 3 after the connection and the encapsulation layer 8 down and have encapsulation glued membrane 7 down, carry out the electrically conductive connection with conducting material after cutting apart into battery piece lamellar body with laser with conventional battery piece from this, at last will adopt flexible encapsulation material of polymer to make lower encapsulation layer 8 and last encapsulation layer 5 cooperate on encapsulation glued membrane 6 and encapsulation glued membrane 7 down to encapsulate a plurality of battery piece lamellar bodies 3, form photovoltaic module through the solidification of piece technology of closing.

Furthermore, the polymer flexible packaging material is a material such as PET, ETFE, PC or PMMA, and the like, and plays a role in protecting the battery piece, for the upper packaging layer, the light receiving surface of the upper packaging layer needs to be transparent, and for the lower packaging layer, the transparent or opaque polymer flexible packaging material can be adopted; the upper packaging adhesive film 6 and the lower packaging adhesive film 7 play a role in bonding the upper packaging layer and the lower packaging layer with the battery piece, and can be common packaging adhesive films such as EVA, POE, PVB, TPU and the like.

The specific manufacturing steps of this example are as follows:

dividing a crystalline silicon solar cell with the side length of 156mm into small cell pieces with the width of 31.6mm by using infrared laser 5 with the wavelength of 1064 nm; connecting the positive and negative electrodes of a small battery piece body with the width of 31.6mm in series by using a tinned copper strip; sequentially typesetting and laminating the PET transparent front plate, the upper POE, the crystalline silicon battery string, the lower POE and the TPT back plate from top to bottom, and placing the assembly with the typesetting and the laminating in a laminator for heating, pressurizing and laminating; and installing a junction box for leading out current for the assembly after the sheet combination.

Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.

Claims

1. The utility model provides a semi-flexible solar PV modules which characterized in that: including lower encapsulated layer (8), transparent go up encapsulated layer (5) and by polylith battery piece lamellar body (3) that solar wafer (1) cutting formed, the polylith battery piece lamellar body (3) carry out the conductive connection through conducting material (4), each after the connection bond between battery piece lamellar body (3) and last encapsulated layer (5) and have last encapsulation glued membrane (6), each after the connection bond between battery piece lamellar body (3) and lower encapsulated layer (8) and have down encapsulation glued membrane (7).

2. The semi-flexible solar photovoltaic module of claim 1, wherein: the conductive material (4) is a tinned copper strip or conductive adhesive.

3. The semi-flexible solar photovoltaic module according to claim 1 or 2, characterized in that: the lower packaging layer (8) and the upper packaging layer (5) are both made of high polymer flexible packaging materials.

4. The semi-flexible solar photovoltaic module of claim 3, wherein: the high polymer flexible packaging material is a PET, ETFE, PC or PMMA material.

5. The semi-flexible solar photovoltaic module of claim 1, 2 or 4, wherein: the upper packaging adhesive film (6) and the lower packaging adhesive film (7) are both EVA, POE, PVB or TPU adhesive films.

6. The semi-flexible solar photovoltaic module of claim 5, wherein: each solar cell (1) is cut into a plurality of cell pieces (3) by laser.

7. The semi-flexible solar photovoltaic module of claim 1, 2, 4 or 6, wherein: the solar cell (1) is a crystalline silicon solar cell.