CN220106553U - BIPV double-sided photovoltaic module - Google Patents
BIPV double-sided photovoltaic module Download PDFInfo
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- CN220106553U CN220106553U CN202320521888.8U CN202320521888U CN220106553U CN 220106553 U CN220106553 U CN 220106553U CN 202320521888 U CN202320521888 U CN 202320521888U CN 220106553 U CN220106553 U CN 220106553U
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- 238000013084 building-integrated photovoltaic technology Methods 0.000 title claims abstract 15
- 239000002313 adhesive film Substances 0.000 claims abstract description 127
- 238000006243 chemical reaction Methods 0.000 claims abstract description 46
- 238000005538 encapsulation Methods 0.000 claims description 9
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 229920006280 packaging film Polymers 0.000 claims description 2
- 239000012785 packaging film Substances 0.000 claims description 2
- 238000004806 packaging method and process Methods 0.000 abstract description 9
- 238000002310 reflectometry Methods 0.000 abstract description 7
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 244000264648 Rhus coriaria Species 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
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- Photovoltaic Devices (AREA)
Abstract
The utility model discloses a BIPV double-sided photovoltaic module, which comprises a panel, a battery piece layer, packaging adhesive films and a back plate, wherein the packaging adhesive films are positioned between the panel and the battery piece layer, the battery piece comprises a plurality of double-sided solar battery pieces which are arranged at intervals, the BIPV double-sided photovoltaic module also comprises a plurality of reflecting adhesive film strips, a light conversion adhesive film used for converting long-wave light into visible light and a reflecting adhesive film layer used for reflecting the visible light to the back surface of the double-sided solar battery pieces, the reflecting adhesive film strips are filled in gaps among the double-sided solar battery pieces and around the battery piece layer, and the reflectivity of the reflecting adhesive film strips to the long-wave light is more than or equal to 30 percent; the reflective film layer is laminated on the back plate, the light conversion film layer is laminated on the reflective film layer, and the battery plate layer is laminated on the light conversion film layer. The BIPV double-sided photovoltaic module has higher light conversion efficiency.
Description
Technical Field
The utility model belongs to the technical field of solar cells, and particularly relates to a BIPV double-sided photovoltaic module.
Background
Building Integrated Photovoltaic (BIPV) is a technology that integrates solar power generation (photovoltaic) products into a building. The integration of photovoltaic architecture is different from the form in which the photovoltaic system is attached to the building. Photovoltaic building integration can be divided into two main categories: one is the combination of the photovoltaic square matrix and the building, and the other is the integration of the photovoltaic square matrix and the building, such as a photovoltaic tile roof, a photovoltaic curtain wall, a photovoltaic daylighting roof and the like. In both ways, the combination of the photovoltaic array with the building is a common form, in particular with the roof of the building.
The photovoltaic module has rich product types and can meet various application scenes. For the purpose of enabling the photovoltaic module to be more attractive after being matched with a roof to obtain market favor, the white backboard is generally replaced by a black backboard or the transparent adhesive film on the back is replaced by a black adhesive film, so that the appearance of the front surface of the packaged photovoltaic module presents a black visual effect, the attractive appearance is guaranteed, but the power loss is relatively large compared with that of a common color module, because the reflectivity of the black adhesive film or the black backboard to light is relatively low, and the light utilization efficiency of the battery piece is reduced.
Disclosure of Invention
In order to solve the technical problems, the utility model provides an improved BIPV double-sided photovoltaic module.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the BIPV double-sided photovoltaic module comprises a panel, a cell layer, an encapsulation adhesive film and a back plate, wherein the encapsulation adhesive film is positioned between the panel and the cell layer, the cell comprises a plurality of double-sided solar cells arranged at intervals, the BIPV double-sided photovoltaic module further comprises a plurality of reflection adhesive film strips, the reflection adhesive film strips are filled in gaps among the double-sided solar cells and around the cell layer, and the reflectivity of the reflection adhesive film strips to long-wave light is more than or equal to 30%; the BIPV double-sided photovoltaic module further comprises a light conversion adhesive film layer for converting the long-wave light into visible light and a reflecting adhesive film layer for reflecting the visible light to the back surface of the double-sided solar cell, wherein the reflecting adhesive film layer is laminated on the back plate, the light conversion adhesive film layer is laminated on the reflecting adhesive film layer, and the cell layer is laminated on the light conversion adhesive film layer; the wavelength of the long-wave light is 640-2600nm, and the wavelength of the visible light is 390-780 nm.
In a more preferred embodiment, the reflective adhesive film strip has a reflectance of visible light of less than 4%.
In a more preferred embodiment, the BIPV bifacial photovoltaic module is a black module and the reflective adhesive strips are black in color.
In a preferred embodiment, the plurality of reflective adhesive film strips are elongated and are spliced with each other according to the shape of the bifacial solar cell sheet, and are adhered to each other at the splice.
In a preferred embodiment, the reflective adhesive film strips comprise a first reflective adhesive film strip arranged at a gap between the double-sided solar cells and a second adhesive film strip arranged at the periphery of the cell layer, wherein the thickness of the first adhesive film strip and the second adhesive film strip is 10-300 μm.
In a more preferred embodiment, the width of the first reflective adhesive film strip is 1-20 mm, and the width of the second reflective adhesive film strip is 10-30 mm.
In a preferred embodiment, the packaging adhesive film is a POE adhesive film or an EVA adhesive film.
In a preferred embodiment, the back surface of the bifacial solar cell is opposite to the light conversion adhesive film layer, and the front surface of the bifacial solar cell is opposite to the packaging adhesive film.
The utility model adopts the following technical scheme:
the BIPV double-sided photovoltaic module comprises a panel, a cell layer, an encapsulation adhesive film and a back plate, wherein the encapsulation adhesive film is positioned between the panel and the cell layer, the cell comprises a plurality of double-sided solar cells arranged at intervals, the BIPV double-sided photovoltaic module further comprises a plurality of reflection adhesive film strips, the reflection adhesive film strips are filled in gaps among the double-sided solar cells and around the cell layer, and the reflectivity of the reflection adhesive film strips to long-wave light is more than or equal to 30%; the BIPV double-sided photovoltaic module further comprises a light conversion adhesive film layer for converting the long-wave light into visible light, the back surface is provided with a reflecting surface for reflecting the visible light to the back surface of the double-sided solar cell, the light conversion adhesive film layer is laminated on the back plate, and the cell layer is laminated on the light conversion adhesive film layer.
In a more preferred embodiment, the reflective adhesive film strip has a reflectance of visible light of less than 4%.
In a more preferred embodiment, the BIPV bifacial photovoltaic module is a black module and the reflective adhesive strips are black in color.
In a preferred embodiment, the plurality of reflective adhesive film strips are elongated and are spliced with each other according to the shape of the bifacial solar cell sheet, and are adhered to each other at the splice.
In a preferred embodiment, the reflective adhesive film strips comprise a first reflective adhesive film strip arranged at a gap between the double-sided solar cells and a second adhesive film strip arranged at the periphery of the cell layer, wherein the thickness of the first adhesive film strip and the second adhesive film strip is 10-300 μm.
In a more preferred embodiment, the width of the first reflective adhesive film strip is 1-20 mm, and the width of the second reflective adhesive film strip is 10-30 mm.
In a preferred embodiment, the packaging adhesive film is a POE adhesive film or an EVA adhesive film.
In a preferred embodiment, the back surface of the bifacial solar cell is opposite to the light conversion adhesive film layer, and the front surface of the bifacial solar cell is opposite to the packaging adhesive film.
Herein, the term "visible light" refers to light having a wavelength in the range of 390nm-780nm. The term "long-wave light" refers to light having a wavelength in the range of 640-2600nm, preferably a wavelength greater than 780nm and less than 2600nm.
Compared with the prior art, the utility model has the following advantages:
when the solar light irradiates the gap of the battery piece or the periphery of the battery piece layer, the light rays are reflected to the inner surface of the panel through the reflecting adhesive film strips and then reach the front surface of the battery piece layer under the action of total reflection; when the solar light irradiates the battery piece, the long-wave light passes through the battery piece and falls on the light conversion adhesive film layer, the light conversion adhesive film layer converts the long-wave light into visible light, irradiates on the reflecting adhesive film layer and is reflected to penetrate through the light conversion adhesive film layer again, and finally irradiates on the back of the battery piece, so that the light utilization rate and the power of the component are improved.
Drawings
In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an exploded schematic view of a BIPV bifacial photovoltaic module in accordance with embodiment 1 of the present utility model;
FIG. 2 is a cross-sectional view of a BIPV bifacial photovoltaic module in accordance with embodiment 1 of the utility model;
FIG. 3 is an exploded view of a BIPV double-sided photovoltaic module in accordance with example 2 of this utility model;
fig. 4 is a cross-sectional view of a BIPV bifacial photovoltaic module according to embodiment 2 of the present utility model.
Wherein,
1. BIPV double-sided photovoltaic module; 11. a panel; 12. a battery sheet layer; 121. double-sided solar cells; 122. a front face; 123. a back surface; 13. packaging the adhesive film; 14. a back plate; 15. a reflective adhesive film strip; 151. a first reflective adhesive film strip; 152. a second reflective adhesive film strip; 16. a light conversion adhesive film layer; 17. and a reflective adhesive film layer.
Detailed Description
Preferred embodiments of the present utility model will be described in detail below with reference to the attached drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art. The description of these embodiments is provided to assist understanding of the present utility model, but is not intended to limit the present utility model. In addition, technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
Example 1
Referring to fig. 1 and 2, the BIPV double-sided photovoltaic module 1 provided in this embodiment includes a panel 11, a cell layer 12, an encapsulating film 13 located between the panel 11 and the cell layer 12, and a back plate 14, where the cell layer 12 includes a plurality of double-sided solar cells 121 arranged at intervals.
Further, the front and back sheets 11 and 14 are glass, the packaging adhesive film 13 is POE adhesive film or EVA adhesive film, and each double-sided solar cell 121 has a front surface 122 and a back surface 123.
The BIPV double-sided photovoltaic module 1 further comprises a plurality of reflective adhesive film strips 15, a light conversion adhesive film layer 16 and a reflective adhesive film layer 17, wherein the reflective adhesive film strips 15, the light conversion adhesive film layer 16 and the reflective adhesive film layer 17 are sequentially arranged from top to bottom. Further, the BIPV double-sided photovoltaic module 1 is a black module, the color of the reflective adhesive film strip 15 is black, the double-sided solar cell is a dark color system, and the classical color system is more attractive after being matched with a roof. The plurality of reflection adhesive film strips 15 are long and are spliced with each other according to the shape of the double-sided solar cell 121, and are adhered to each other at the splice.
The thickness of the reflective adhesive film strip 15 is 10-300 mu m, the reflective adhesive film strip has higher reflectivity in the infrared band, the reflectivity for visible light is less than 4%, and the photoelectric conversion efficiency is higher. The reflective adhesive film strip 15 is an outsourced existing material, and the composition of the reflective adhesive film strip is not the main point of the utility model, for example, a POE composite adhesive film of the T22W type purchased from Suzhou Saiwu applied technology Co., ltd, and the main component of the reflective adhesive film strip is POE added with black coloring agent and long-band high-reflection barium sulfate filler, and the surface of the reflective adhesive film strip is black, so that the reflective adhesive film strip can be better combined with a building roof and has better aesthetic property.
The reflective adhesive film strips 15 are filled in the gaps between the double-sided solar cells 121 and the periphery of the cell layer 12, and the reflectivity of the reflective adhesive film strips 15 to long-wave light is greater than or equal to 30%. More specifically, the reflective adhesive film strip 15 includes a first reflective adhesive film strip 151 and a second reflective adhesive film strip 152, the first reflective adhesive film strip 151 is disposed at a gap between the bifacial solar cells 121, and the second reflective adhesive film strip 152 is disposed around the cell layer 12. The thickness of the first and second adhesive film stripes 151 and 152 is 10 μm to 300 μm.
The thickness of the light conversion film layer 16 is 10 μm to 300 μm, which is used for converting long-wave light into visible light, the wavelength of the visible light is 390nm to 780nm, and the wavelength of the long-wave light is more than 780nm. The light conversion film layer 16 is an existing material purchased from outside, and its composition is not essential to the present utility model, and for example, POE composite film with light conversion material purchased from sumach application technologies inc, su, can be used, which can convert long-band light into visible-band light.
The main material of the reflective film layer 17 is POE, titanium dioxide is added in the reflective film layer to realize the full-band high reflection effect, the thickness is 10-300 mu m, the light conversion film layer 16 is used for reflecting visible light to the back surface 123 of the double-sided solar cell 121, the reflective film layer 17 is laminated on the back plate 14, the light conversion film layer 16 is laminated on the reflective film layer 17, and the cell layer 12 is laminated on the light conversion film layer 16. Namely, the battery sheet layer 12, the light conversion adhesive film layer 16, the reflective adhesive film layer 17 and the back plate 14 are arranged in sequence from top to bottom.
The width of the first reflective adhesive film strip 151 is 1-20 mm, and the width of the second reflective adhesive film strip 152 is 10-30 mm. The thickness of the light conversion film layer 16 and the reflection film layer 17 is 10 μm to 300 μm. The back surface 123 of the double-sided solar cell 121 faces the light conversion adhesive film layer 16, and the front surface 122 of the double-sided solar cell 121 faces the packaging adhesive film 13.
When the solar light irradiates the component, light falling into the gap of the double-sided solar cell 121 and the periphery of the cell layer 12 is reflected by the reflective adhesive film strips 15 and then is totally reflected by the inner surface of the panel 11 to act on the front surface 122 of the cell, so that the power of the component is improved; on the other hand, a part of long-wave light falling on the front surface 122 of the bifacial solar cell penetrates through the cell 121, and the long-wave light forms visible-wave band light through the light conversion effect of the light conversion film layer 16, irradiates the reflecting film layer 17, is reflected, penetrates through the light conversion film layer 16 again, irradiates the back surface 123 of the cell and is absorbed, and the power of the assembly is further improved.
According to the embodiment, through the structural design of the photovoltaic module, the front appearance of the photovoltaic module presents a black visual effect, and the market appearance requirement is met. When meeting the black outward appearance of subassembly, promote the reflection of subassembly inside light, increase the utilization efficiency of battery piece to light, promote the subassembly power.
Example 2
Referring to fig. 3 and 4, the difference between the present embodiment and embodiment 1 is that the BIPV double-sided photovoltaic module is not provided with a reflective adhesive film layer. The BIPV photovoltaic module of this embodiment includes a panel 11, a cell layer 12, a packaging film 13 between the panel 11 and the cell layer 12, a plurality of reflective film strips 15, a light conversion film layer 16 and a back plate 14, the cell layer 12 includes a plurality of spaced bifacial solar cells 121, the reflective film strips 15 are filled in the gaps between the bifacial solar cells 121 and around the cell layer 12, the light conversion film layer 16 converts long-wave light into visible light, the back plate 14 has a reflective surface for reflecting the visible light to the back surface 123 of the bifacial solar cells 121, the light conversion film layer 16 is stacked on the back plate 14, and the cell layer 12 is stacked on the light conversion film layer 16.
When the solar light irradiates the component, light falling into the gap of the double-sided solar cell 121 and the periphery of the cell layer 12 is reflected by the reflective adhesive film strips 15 and then is totally reflected by the inner surface of the panel 11 to act on the front surface 122 of the cell, so that the power of the component is improved; on the other hand, a part of the long wave light falling on the front surface 122 of the bifacial solar cell penetrates the cell 121, and the long wave light forms visible wave band light through the light conversion effect of the light conversion adhesive film layer 16, irradiates on the reflecting surface of the back plate 14, is reflected again, penetrates the light conversion adhesive film layer 16 again, irradiates on the back surface 123 of the cell, and further improves the power of the assembly.
As used in this specification and in the claims, the terms "comprises" and "comprising" merely indicate that the steps and elements are explicitly identified, and do not constitute an exclusive list, as other steps or elements may be included in a method or apparatus. The term "and/or" as used herein includes any combination of one or more of the associated listed items.
It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly or indirectly fixed or connected to the other feature. Further, the descriptions of the upper, lower, left, right, etc. used in the present utility model are merely with respect to the mutual positional relationship of the constituent elements of the present utility model in the drawings.
The above-described embodiments are provided for illustrating the technical concept and features of the present utility model, and are intended to be preferred embodiments for those skilled in the art to understand the present utility model and implement the same according to the present utility model, not to limit the scope of the present utility model. All equivalent changes or modifications made according to the principles of the present utility model should be construed to be included within the scope of the present utility model.
Claims (10)
1. The BIPV double-sided photovoltaic module comprises a panel, a cell layer, an encapsulation adhesive film and a back plate, wherein the encapsulation adhesive film is positioned between the panel and the cell layer, and the cell comprises a plurality of double-sided solar cells arranged at intervals; the BIPV double-sided photovoltaic module further comprises a light conversion adhesive film layer for converting the long-wave light into visible light and a reflecting adhesive film layer for reflecting the visible light to the back surface of the double-sided solar cell, wherein the reflecting adhesive film layer is laminated on the back plate, the light conversion adhesive film layer is laminated on the reflecting adhesive film layer, and the cell layer is laminated on the light conversion adhesive film layer.
2. The biplanar photovoltaic module according to claim 1, wherein the thickness of the light conversion film layer and the reflective film layer is 10 μm to 300 μm.
3. The BIPV double-sided photovoltaic module comprises a panel, a cell layer, an encapsulation adhesive film and a back plate, wherein the encapsulation adhesive film is positioned between the panel and the cell layer, and the cell comprises a plurality of double-sided solar cells arranged at intervals; the BIPV double-sided photovoltaic module further comprises a light conversion adhesive film layer for converting the long-wave light into visible light, the back plate is provided with a reflecting surface for reflecting the visible light to the back surface of the double-sided solar cell, the light conversion adhesive film layer is laminated on the back plate, and the cell layer is laminated on the light conversion adhesive film layer.
4. The BIPV photovoltaic module according to claim 1 or 3, wherein the reflective adhesive film strip has a reflectance of less than 4% for visible light.
5. The BIPV module according to claim 4, wherein the BIPV module is a black module and the reflective adhesive film strip is black in color.
6. The BIPV module according to claim 4, wherein the plurality of reflective adhesive strips are elongated and are spliced to each other according to the shape of the bifacial solar cell sheet and are adhered to each other at the splice.
7. The BIPV module according to claim 6, wherein the reflective adhesive film strips comprise a first reflective adhesive film strip disposed at a gap between the bifacial solar cells and a second reflective adhesive film strip disposed around the cell layer, wherein the first and second reflective adhesive film strips have a thickness of 10 μm to 300 μm.
8. The biplanar photovoltaic module according to claim 7 wherein the width of the first reflective adhesive film strip is 1-20 mm and the width of the second reflective adhesive film strip is 10-30 mm.
9. A BIPV module according to claim 1 or claim 3, wherein the encapsulation film is POE film or EVA film.
10. A BIPV bifacial photovoltaic module according to claim 1 or claim 3, wherein the back side of the bifacial solar cell corresponds to the layer of light conversion film and the front side of the bifacial solar cell corresponds to the packaging film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320521888.8U CN220106553U (en) | 2023-03-17 | 2023-03-17 | BIPV double-sided photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320521888.8U CN220106553U (en) | 2023-03-17 | 2023-03-17 | BIPV double-sided photovoltaic module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220106553U true CN220106553U (en) | 2023-11-28 |
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ID=88865738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320521888.8U Active CN220106553U (en) | 2023-03-17 | 2023-03-17 | BIPV double-sided photovoltaic module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220106553U (en) |
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- 2023-03-17 CN CN202320521888.8U patent/CN220106553U/en active Active
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