CN115104187A - Improved photovoltaic device - Google Patents
Improved photovoltaic device Download PDFInfo
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- CN115104187A CN115104187A CN202180014068.3A CN202180014068A CN115104187A CN 115104187 A CN115104187 A CN 115104187A CN 202180014068 A CN202180014068 A CN 202180014068A CN 115104187 A CN115104187 A CN 115104187A
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- 238000007650 screen-printing Methods 0.000 claims description 4
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S20/00—Supporting structures for PV modules
- H02S20/20—Supporting structures directly fixed to an immovable object
- H02S20/22—Supporting structures directly fixed to an immovable object specially adapted for buildings
- H02S20/26—Building materials integrated with PV modules, e.g. façade elements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Photovoltaic Devices (AREA)
Abstract
An improved photovoltaic device. Provided is a photovoltaic device, including: a solar cell; a sealing member for sealing the solar cell; a first cover member disposed on the sealing member at one side of the solar cell; a second cover member disposed on the sealing member at the other side of the solar cell; a heterogeneous patterned layer for providing a patterned photovoltaic device, the heterogeneous patterned layer disposed on or adjacent to a surface of a solar cell; and a homogeneous base layer adjacent to the non-homogeneous patterned layer, the homogeneous base layer being closer to the solar cell than the non-homogeneous patterned layer.
Description
Technical Field
The present invention relates to an improved photovoltaic device.
Background
Photovoltaic (PV) devices are typically installed on roofs. However, in order to obtain maximum utilization, it is advantageous to use photovoltaic devices on the exterior walls of buildings to efficiently utilize sunlight.
While it is advantageous to mount photovoltaic devices on the exterior walls of buildings, this practice is not widespread. One reason for this is that the mounting of conventional photovoltaic devices on exterior walls can affect the aesthetics of the building. Therefore, a photovoltaic device having a building integrated structure is required to have excellent aesthetic characteristics that can be integrated with the overall appearance of a building.
Colored solar panels are known in the art, wherein a colored layer or film is provided on a photovoltaic device. However, the amount of light incident on the solar cell included in the photovoltaic device may be reduced, and thus the output of the photovoltaic device may be reduced. Furthermore, it may be difficult to achieve a color, pattern, and/or texture that blends the photovoltaic device with the rest of the building in which it is used while maintaining the efficiency of the photovoltaic device. Specific patterns can now be obtained, but this is at the cost of power loss.
Accordingly, there is a need for an improved photovoltaic device suitable for use as a Building Integrated Photovoltaic (BIPV) module while minimizing the loss of power efficiency of the photovoltaic device.
Disclosure of Invention
The present invention seeks to address these problems and/or to provide an improved photovoltaic device.
According to a first aspect, the present invention provides a Photovoltaic (PV) device comprising:
-a solar cell;
-a sealing member for sealing the solar cell;
a first cover member disposed on the sealing member at one side of the solar cell;
-a second cover member disposed on the sealing member at the other side of the solar cell;
-a heterogeneous patterned layer for providing a patterned photovoltaic device, the heterogeneous patterned layer being arranged on or adjacent to a surface of the solar cell; and
-a homogeneous base layer adjacent to the inhomogeneous patterned layer, the homogeneous base layer being closer to the solar cell than the inhomogeneous patterned layer.
The heterogeneous pattern layer may be disposed on a surface of the first cover member or a surface of the sealing member adjacent to the first cover member. In particular, the heterogeneous pattern layer may be disposed on a surface of the first cover member facing the sealing member.
The heterogeneous patterned layer may be formed by any suitable method. For example, the heterogeneous patterning layer may be formed by, but is not limited to: screen printing, digital printing, frit printing, or a combination thereof.
According to a particular aspect, the homogeneous base layer may be disposed on a surface of the sealing member.
The homogeneous base layer may be formed by any suitable method. For example, the homogeneous base layer may be formed by, but is not limited to: interference spray, sputter spray, scattering, or combinations thereof. In particular, the homogeneous base layer may comprise a spectrally selective reflective material.
The first cover member may be of any suitable material. For example, the first cover member may include, but is not limited to, the following materials: glass, thermoplastic polymer, polymethyl methacrylate, polycarbonate, or a combination thereof.
The solar cells included in the photovoltaic device may be any suitable solar cells. For example, the solar cell may include, but is not limited to: a perovskite solar cell, a Copper Indium Gallium Selenide (CIGS) solar cell, a copper indium gallium selenide sulfide (CIGSSe) solar cell, a silicon solar cell, or a combination thereof.
The invention also provides a Building Integrated Photovoltaic (BIPV) module comprising a photovoltaic apparatus as described in the first aspect.
Drawings
In order that the invention may be fully understood and readily put into practical effect, there shall now be described by way of non-limitative example embodiments thereof, the present invention being with reference to the accompanying illustrative drawings. In the drawings:
fig. 1 shows a schematic view of a photovoltaic device of one embodiment of the present invention;
FIG. 2 shows a schematic view of a photovoltaic device of one embodiment of the present invention; and
fig. 3 shows an example of the appearance of the heterogeneous patterned layer and the homogeneous base layer of the photovoltaic device of one embodiment of the present invention.
Detailed Description
As noted above, there is a need for an improved photovoltaic (BIPV) device that can be incorporated into Building Integrated Photovoltaic (BIPV) modules.
In general, the present invention relates to a photovoltaic device for use in a BIPV module that can enable the BIPV module to mimic the aesthetic characteristics of building materials. Thus, the photovoltaic device can mimic the look and feel of various building materials while minimizing power loss.
According to a first aspect, the present invention provides a Photovoltaic (PV) device comprising:
-a solar cell;
-a sealing member for sealing the solar cell;
a first cover member disposed on the sealing member at one side of the solar cell;
-a second cover member disposed on the sealing member at the other side of the solar cell;
-a heterogeneous patterned layer for providing a patterned photovoltaic device, the heterogeneous patterned layer being arranged on or adjacent to a surface of the solar cell; and
-a homogeneous base layer adjacent to the inhomogeneous patterned layer, the homogeneous base layer being closer to the solar cell than the inhomogeneous patterned layer.
The combination of the heterogeneous patterned layer and the homogeneous base layer supports photovoltaic devices of different BIPV module designs. For example, the heterogeneous patterning layer may be used as a patterning layer to provide different patterns and designs. The homogeneous base layer may serve as a base color layer to provide any desired aesthetic.
Fig. 1 provides a schematic illustration of a photovoltaic device of one embodiment of the present invention. However, FIG. 1 is not intended to limit the present invention, and it should be understood that other arrangements may be included within the scope of the present invention.
Fig. 1 provides a photovoltaic device 100, the photovoltaic device 100 including a first cover member 102, sealing members 104a and 104b, a solar cell 106, and a second cover member 108. The sealing members 104a and 104b surround and seal the solar cell 106. The first cover member 102 may be located at a surface of the solar cell 106, for example, at a front surface, on the sealing member 104a, and the second cover member 108 may be located at another surface of the solar cell 106, for example, at a rear surface, on the sealing member 104 b.
The heterogeneous pattern layer may be disposed on a surface of the first cover member or a surface of the sealing member adjacent to the first cover member. In particular, the heterogeneous pattern layer may be disposed on a surface of the first cover member facing the sealing member. Referring to fig. 1, the first cover member 102 may include a heterogeneous pattern layer, and the sealing member 104a may include a homogeneous base layer. In particular, the heterogeneous pattern layer may be disposed on a surface of the first cover member facing the sealing member 104 a. However, as described above, the heterogeneous pattern layer does not necessarily have to be included in the first cover member 102, but may be provided on the surface of the sealing member 104a, or as a unique independent layer at any position above the solar cell 106.
The heterogeneous patterning layer may be formed by any suitable method. According to a particular aspect, the heterogeneous patterning layer may be formed by a printing process. In particular, the printing process may include screen printing, digital printing, frit printing, or a combination thereof. For example, the printing process may include, but is not limited to: screen printing, ink jet printing, offset printing, laser printing, frit printing, or combinations thereof. The inkjet printing may be digital injection printing.
According to one particular aspect, the heterogeneous patterning layer may be formed such that the photovoltaic device 100 has one or more of a desired color, image, pattern, feel, texture, or the like. In particular, in order to obtain a desired color and/or pattern, the printing may be performed using a coloring material to form a heterogeneous pattern layer. The coloring material may include, but is not limited to, ceramic frit, color pigment, enamel ink, dye, or combinations thereof. The coloring material may be selected to reflect and/or absorb light of a particular wavelength. In particular, the perceived color obtained may be due to reflected light.
According to one particular aspect, the homogeneous base layer may be disposed adjacent to the heterogeneous patterned layer such that the homogeneous base layer is below the heterogeneous patterned layer. The homogeneous base layer may be disposed on a surface of the sealing member. Alternatively, the homogeneous base layer may be provided as a distinct, independent layer over the solar cells 106.
The homogeneous base layer may be formed by any suitable method. For example, the homogeneous base layer may be formed by, but is not limited to: interference spray, sputter spray, scattering, or combinations thereof. In particular, the homogeneous base layer may comprise a spectrally selective reflective material. The spectrally selective reflective material may be in the form of photonic structures, crystals, or particles disposed on the sealing member 104 a. The spectrally selective reflective material can be deposited on the surface by any suitable method. According to a particular aspect, the spectrally selective reflective material may be mixed with the material forming the sealing member such that the homogeneous base layer is formed on or within the sealing member.
The homogeneous base layer may serve as an additional color layer. In particular, the homogeneous base layer can selectively reflect wavelengths of interest with minimal absorption, and thus can provide colors of interest with minimal power loss. More specifically, the spectrally selective reflective material contained in the homogeneous base layer selectively reflects light of a specific wavelength to realize a specific color.
According to a particular aspect, the heterogeneous patterning layer may be disposed over a smaller surface area than the homogeneous base layer.
In general, the inclusion of a coloring material in a heterogeneous patterned layer may cause the efficiency of the photovoltaic device to decrease in the form of power loss due to the combined effect of the coloring material's reflection and absorption of light. However, in the present invention, since the heterogeneous pattern layer and the homogeneous base layer are separately provided, the photovoltaic device can achieve appropriate efficiency while still maintaining desired patterns and colors. In particular, the heterogeneous patterned layer provides the desired pattern and/or design with minimal coverage as a heterogeneous layer, while the homogeneous base layer provides the desired color with full coverage as a homogeneous layer. More specifically, the heterogeneous patterned layer formed by printing has a large power loss but a wide range of aesthetic flexibility, while the homogeneous base layer formed of a spectrally selective reflective material has a minimal power loss but less aesthetic flexibility. However, since the area on which the heterogeneous patterned layer is formed is much smaller compared to the homogeneous base layer, the overall power loss is reduced while enabling the desired aesthetic effect of the photovoltaic device.
According to a particular aspect, the photovoltaic device of the present invention comprises a pattern with a small coverage and a spectrally selective reflective filter layer that selectively reflects light (the color of interest) as a homogeneous base color layer, thereby achieving the desired aesthetic effect with minimal power loss.
The first cover member 102 and the second cover member 108 may be any suitable material. The first and second cover members 102 and 108 may be formed of a heat insulating material capable of protecting the solar cell 106 from external impact, moisture, ultraviolet rays, and the like.
The first and second cover members 102 and 108 may have a predetermined structure, such as a predetermined color, image, pattern, feel, texture, etc., that gives the photovoltaic device 100 a desired appearance.
The first cover member 102 may have light transmission characteristics that allow light to pass therethrough so as not to block light incident on the solar cell 106. The first cover member 102 may be a substrate, a film, a sheet, a panel, or the like. The first cover member 102 may include, but is not limited to: glass, thermoplastic polymer, polymethyl methacrylate, polycarbonate, or a combination thereof. In particular, the first cover member 102 is made of glass.
The second cover member 108 may have excellent fire resistance and thermal insulation. For example, the second cover member 108 may be a substrate, a film, a sheet, a panel, etc., and may be formed of, but is not limited to, the following materials: glass, thermoplastic polymer, polymethyl methacrylate, polycarbonate, or a combination thereof.
The solar cells included in the photovoltaic device may be any suitable solar cells. The solar cell may have any suitable structure. For example, the solar cell may be a compound semiconductor solar cell, a thin film semiconductor solar cell, a dye-sensitized solar cell, or a combination thereof. According to a particular aspect, the solar cell may include, but is not limited to: a perovskite solar cell, a Copper Indium Gallium Selenide (CIGS) solar cell, a copper indium gallium selenide sulfide (CIGSSe) solar cell, a silicon solar cell, or a combination thereof.
The solar cell may include a photoelectric conversion part converting solar energy into electrical energy, and an electrode electrically connected to the photoelectric conversion part and collecting and transferring current. For example, the solar cell may be a solar cell that generates electrical energy from light at wavelengths of 100-1400 nanometers.
According to a particular aspect, the solar cell may include one or more solar cells. When the solar cell comprises a plurality of solar cells, each of the plurality of solar cells may be electrically connected in series, in parallel, or in series-parallel.
The sealing member may include a first sealing member 104a on a front surface of the solar cell 106 and a second sealing member 104b on a rear surface of the solar cell 106. The first and second sealing members 104a and 104b may prevent moisture and oxygen from entering and chemically bonding with the solar cell 106.
The first and second sealing members 104a, 104b may be formed of any suitable material. For example, the first sealing member 104a and the second sealing member 104b may be formed of a heat insulating material having translucency and adhesiveness. Suitable materials for the first and second sealing members 104a, 104b include, but are not limited to, ethylene-vinyl acetate copolymer resin (EVA), polyvinyl butyral, silicone, ester resin, olefin resin, or combinations thereof.
Another embodiment of the present invention includes a conventional photovoltaic device 200 (fig. 2), the photovoltaic device 200 including a first cover member 202, sealing members 204a and 204b, a solar cell 206, a second cover member 208, a heterogeneous patterning layer 210, and a homogeneous base layer 212. The heterogeneous pattern layer 210 and the homogeneous base layer 212 may combine the heterogeneous pattern layer included in the cover member 102 and the homogeneous base layer included in the above-described sealing member 104a as described above.
According to a second aspect, there is also provided a Building Integrated Photovoltaic (BIPV) module comprising a photovoltaic apparatus as described in the first aspect.
Having generally described the invention, the same will be more readily understood through reference to the following examples, which are provided by way of illustration and not limitation.
Examples
Two sets of photovoltaic patterned devices were prepared-a digitally printed conventional photovoltaic device, and another photovoltaic device comprising a heterogeneous patterned layer and a homogeneous base layer. The method of making the photovoltaic device is as follows.
Conventional photovoltaic device
The design/pattern is created using imaging software and then printed on a glass substrate. The printed glass substrate constitutes a first cover member and is placed over the solar cells encapsulated in the sealing member to form a conventional photovoltaic device. The electrical performance of conventional photovoltaic devices was measured using a solar simulator under Standard Test Conditions (STC).
Photovoltaic device including heterogeneous pattern layer and homogeneous base layer
The design/pattern is generated using imaging software. In particular, a homogeneous pattern layer is digitally printed on the surface of the glass substrate forming the first cover member. The encapsulant is deposited with a photonic structure such that the encapsulant in contact with the top surface of the solar cell forms a homogeneous base layer. The printed glass substrate constitutes a first cover member and is placed over the solar cells encapsulated in a sealing member comprising a homogeneous base layer to form the photovoltaic device of the invention (referred to as "hybrid photovoltaic device"). In this way, two photovoltaic devices are formed, one having a pattern that mimics the appearance of concrete and the other having a geometric pattern. Fig. 3 shows the appearance of the heterogeneous patterned layer and the homogeneous base layer.
The electrical performance of the hybrid photovoltaic devices was measured using a solar simulator under Standard Test Conditions (STC).
The results of the electrical properties are shown in table 1.
Table 1: electrical performance results for photovoltaic devices formed using different methods
As can be seen from the short circuit current of the photovoltaic device measured relative to a standard photovoltaic module with clear glass, the power loss of the hybrid photovoltaic device is lower for concrete and geometric designs than for all-digital printed photovoltaic devices. In practice, the power of concrete and geometric designs is increased by 4-7%.
While the above description describes certain exemplary embodiments, it will be appreciated by those skilled in the art that many changes can be made without departing from the invention.
Claims (11)
1. A Photovoltaic (PV) apparatus, comprising:
-a solar cell;
-a sealing member for sealing the solar cell;
a first cover member disposed on the sealing member at one side of the solar cell;
-a second cover member disposed on the sealing member at the other side of the solar cell;
-a heterogeneous patterned layer for providing a patterned photovoltaic device, the heterogeneous patterned layer being arranged on or adjacent to a surface of the solar cell; and
-a homogeneous base layer adjacent to the inhomogeneous patterned layer, the homogeneous base layer being closer to the solar cell than the inhomogeneous patterned layer.
2. The photovoltaic device of claim 1, wherein the heterogeneous pattern layer is disposed on a surface of the first cover member.
3. The photovoltaic device according to claim 2, wherein the heterogeneous pattern layer is disposed on a surface of the first cover member facing the sealing member.
4. The photovoltaic device of claim 1, wherein the heterogeneous pattern layer is disposed on a surface of the sealing member adjacent to the first cover member.
5. The photovoltaic device of any preceding claim, wherein the homogeneous base layer is disposed on a surface of the encapsulant member.
6. The photovoltaic device of any preceding claim, wherein the heterogeneous pattern layer is formed by: screen printing, digital printing, frit printing, or a combination thereof.
7. The photovoltaic device of any preceding claim, wherein the homogeneous base layer is formed by: interference spray, sputter spray, scattering, or combinations thereof.
8. The photovoltaic device of any preceding claim, wherein the homogeneous base layer comprises a spectrally selective reflective material.
9. The photovoltaic device of any preceding claim, wherein the first cover member is made of: glass, thermoplastic polymer, polymethyl methacrylate, polycarbonate, or a combination thereof.
10. The photovoltaic device of any preceding claim, wherein the solar cell comprises: a perovskite solar cell, a Copper Indium Gallium Selenide (CIGS) solar cell, a copper indium gallium selenide sulfur (CIGSSe) solar cell, a silicon solar cell, or a combination thereof.
11. A Building Integrated Photovoltaic (BIPV) module comprising a photovoltaic apparatus as claimed in any preceding claim.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SG10202001329U | 2020-02-13 | ||
| SG10202001329U | 2020-02-13 | ||
| PCT/SG2021/050073 WO2021162640A1 (en) | 2020-02-13 | 2021-02-11 | An improved photovoltaic device |
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| Publication Number | Publication Date |
|---|---|
| CN115104187A true CN115104187A (en) | 2022-09-23 |
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| CN202180014068.3A Pending CN115104187A (en) | 2020-02-13 | 2021-02-11 | Improved photovoltaic device |
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| WO (1) | WO2021162640A1 (en) |
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| CN202189808U (en) * | 2011-06-17 | 2012-04-11 | 富阳光电股份有限公司 | Patterned solar photovoltaic panel |
| SG11201906398XA (en) * | 2017-01-12 | 2019-08-27 | Rab Global Green Sdn Bhd | Color solar energy module and fabrication method therefor |
| CN107887474B (en) * | 2017-11-10 | 2020-01-14 | 艾尔碧全球绿色科技有限公司 | Color solar module with naked-eye 3D pattern and manufacturing method |
| CN110746681A (en) * | 2018-07-24 | 2020-02-04 | 张伟 | Photovoltaic module imitating natural stone pattern and preparation method thereof |
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- 2021-02-11 WO PCT/SG2021/050073 patent/WO2021162640A1/en active Application Filing
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| WO2021162640A1 (en) | 2021-08-19 |
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