CN112018205A - Photovoltaic module with good backboard light acceptance rate - Google Patents
Photovoltaic module with good backboard light acceptance rate Download PDFInfo
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- CN112018205A CN112018205A CN202011072388.8A CN202011072388A CN112018205A CN 112018205 A CN112018205 A CN 112018205A CN 202011072388 A CN202011072388 A CN 202011072388A CN 112018205 A CN112018205 A CN 112018205A
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- photovoltaic glass
- photovoltaic
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- reflecting layer
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- 239000011521 glass Substances 0.000 claims abstract description 66
- 239000000463 material Substances 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 238000004049 embossing Methods 0.000 claims description 6
- 235000012239 silicon dioxide Nutrition 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 27
- 238000010586 diagram Methods 0.000 description 5
- 239000002313 adhesive film Substances 0.000 description 4
- 239000011247 coating layer Substances 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000006124 Pilkington process Methods 0.000 description 1
- 101100409194 Rattus norvegicus Ppargc1b gene Proteins 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
- H01L31/056—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means the light-reflecting means being of the back surface reflector [BSR] type
-
- 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
- H01L31/0216—Coatings
- H01L31/02161—Coatings for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/02167—Coatings for devices characterised by at least one potential jump barrier or surface barrier for solar cells
- H01L31/02168—Coatings for devices characterised by at least one potential jump barrier or surface barrier for solar cells the coatings being antireflective or having enhancing optical properties for the solar cells
-
- 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
- H01L31/0236—Special surface textures
-
- 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
- Y02E10/52—PV systems with concentrators
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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)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a photovoltaic module with good back plate light receiving rate, which comprises front photovoltaic glass, back photovoltaic glass, a plurality of battery pieces, a reflecting layer and an antireflection film, wherein the back photovoltaic glass is arranged opposite to the front photovoltaic glass, the outer surface of the back photovoltaic glass is provided with a patterned surface, the battery pieces are distributed between the front photovoltaic glass and the back photovoltaic glass in an array manner, gaps are formed between adjacent battery pieces, the reflecting layer is arranged on the outer surface of the back photovoltaic glass, the reflecting layer is positioned at the position of the gaps in the orthographic projection of the outer surface of the back photovoltaic glass, the antireflection film is arranged on the outer surface of the reflecting layer, and the antireflection film covers the outer surface of the whole back photovoltaic glass. The photovoltaic module with the good backboard light receiving rate has the advantages of being simple in structure, effectively improving the backboard light receiving rate and the like.
Description
Technical Field
The invention belongs to the technical field of solar cells, and particularly relates to a photovoltaic module with a good backboard light acceptance rate.
Background
Nowadays, as green and environment-friendly energy is more and more emphasized by many people, photovoltaic energy is gradually popular among people as an environment-friendly energy by converting light energy into electric energy by using semiconductor materials. The back power of the double-sided photovoltaic module is lower in the past, so the back power cannot be taken into consideration, the power of the back of the double-sided photovoltaic module is increasingly increased along with the development of the double-sided photovoltaic module technology, however, the light between the double-sided photovoltaic module battery pieces cannot be basically utilized on the back, so that the back light receiving rate of the double-sided photovoltaic module on the market at present is still far smaller than the front light receiving rate, and therefore a method for improving the back light receiving rate of the double-sided photovoltaic module is urgently needed to be found, and the whole light energy utilization rate of the photovoltaic module is improved.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to solve the problem that the back light receiving rate of the double-sided photovoltaic module is far smaller than that of the front light receiving rate, the invention provides the photovoltaic module with good back plate light receiving rate.
The technical scheme adopted by the invention for solving the technical problems is as follows: a photovoltaic module having good backsheet acceptance, comprising: front photovoltaic glass; the back photovoltaic glass is arranged opposite to the front photovoltaic glass, and the outer surface of the back photovoltaic glass is provided with an embossing surface; the plurality of battery pieces are distributed between the front photovoltaic glass and the back photovoltaic glass in an array manner, and gaps are formed between the adjacent battery pieces; the reflecting layer is arranged on the outer surface of the back photovoltaic glass and is positioned at the position of the gap in the orthographic projection on the outer surface of the back photovoltaic glass; and the antireflection film is arranged on the outer surface of the reflecting layer and covers the outer surface of the whole back photovoltaic glass. According to the photovoltaic module with the good back plate light receiving rate, the embossing surface is arranged on the outer surface of the back photovoltaic glass, the reflecting layer is positioned at the position of the gap in the orthographic projection of the outer surface of the back photovoltaic glass, and finally the antireflection film is arranged on the outer side of the reflecting layer. Light shines the reflector layer through the clearance of battery piece, and the reflector layer utilizes self can high efficiency reflection light's principle, with light reflection to the battery piece to the photic rate of backplate has been improved.
Further, in order to ensure that the back of the battery piece can receive the reflected light of the reflecting layer, the distance of the orthographic projection of the reflecting layer beyond the gap is S, and the range of S is 0-10 mm.
Further, in order to ensure that the reflected light can be fully received by the cell, each gap is provided with a reflecting layer at the position of the orthographic projection of the outer surface of the back photovoltaic glass.
Furthermore, in order to make full use of the light at the edge of the glass plate, a reflecting layer is further arranged on the outer surface of the back photovoltaic glass close to the edge.
Further, preferably, the distance between adjacent battery pieces with gaps is 2mm-8 mm.
Further, in order to improve the light receiving rate of the photovoltaic module backboard, the embossing surface is provided with a protruding unit.
Further, preferably, the protrusion units are formed in a triangular prism, a quadrangular prism, a semicircular column, or an irregular diffused reflection structure.
Further, the reflecting layer is one or more of high-reflecting materials such as a white glaze coating layer, an aluminum oxide layer, white paint and the like.
Further, preferably, the material of the antireflection film is silicon dioxide.
Furthermore, the front photovoltaic glass is bonded with the plurality of battery pieces, and the back photovoltaic glass is bonded with the plurality of battery pieces. Transparent adhesive films are arranged between the front photovoltaic glass and the plurality of battery pieces, and transparent adhesive films are also arranged between the back photovoltaic glass and the plurality of battery pieces.
The photovoltaic module with good backboard light receiving rate has the advantages that the reflecting layer is arranged on the outer surface of the back photovoltaic glass and is distributed at the gaps of the plurality of battery pieces, light rays in the gaps of the battery pieces can be utilized, the light rays irradiate the reflecting layer through the gaps of the battery pieces, and the reflecting layer reflects the light rays to the battery pieces by utilizing the principle that the reflecting layer can reflect the light rays with high efficiency, so that the backboard light receiving rate is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a cross-sectional view of a photovoltaic module having good back-sheet acceptance according to a first embodiment of the present invention;
fig. 2 is a partially enlarged schematic view of a photovoltaic module with good back-plane light acceptance according to a first embodiment of the invention;
fig. 3 is a schematic structural diagram of a convex unit of a photovoltaic module with good back-plane light acceptance according to a first embodiment of the invention;
fig. 4 is a schematic structural diagram of a photovoltaic module with good back-plate light acceptance according to a first embodiment of the invention;
FIG. 5 is a schematic structural diagram of another protruding unit of a photovoltaic module with good back-plane light acceptance according to the second embodiment of the present invention;
FIG. 6 is a schematic structural diagram of another protruding unit of a photovoltaic module with good back-plane light acceptance according to the third embodiment of the present invention;
fig. 7 is a schematic structural diagram of another protruding unit of a photovoltaic module with good back-plate light acceptance according to the fourth embodiment of the invention.
Reference numerals:
a photovoltaic module 100 having good back-sheet acceptance;
front photovoltaic glass 1; a back photovoltaic glass 2;
an embossed face 3; a battery piece 4; a gap 5;
a light-reflecting layer 6; an antireflection film 7; a projection unit 31.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
As shown in fig. 1-4, a photovoltaic module 100 with good back-sheet acceptance comprises: front photovoltaic glass 1; the back photovoltaic glass 2 is arranged opposite to the front photovoltaic glass 1, and the outer surface of the back photovoltaic glass 2 is provided with an embossing surface 3; the solar photovoltaic glass comprises a plurality of battery pieces 4, wherein the battery pieces 4 are distributed between front photovoltaic glass 1 and back photovoltaic glass 2 in an array manner, and gaps 5 are formed between the adjacent battery pieces 4; the reflecting layer 6 is arranged on the outer surface of the back photovoltaic glass 2, and the reflecting layer 6 is positioned at the position of the gap 5 in the orthographic projection of the outer surface of the back photovoltaic glass 2; the antireflection film 7 is arranged on the outer surface of the reflecting layer 6, and the antireflection film 7 covers the outer surface of the whole back photovoltaic glass 2. The distance of the light reflecting layer 6 beyond the orthographic projection of the gap 5 is S, and the range of S is 0-10 mm. Each gap 5 is provided with a reflecting layer 6 at the position of the orthographic projection of the outer surface of the back photovoltaic glass 2. And a reflecting layer 6 is also arranged on the outer surface of the back photovoltaic glass 2 close to the edge. The distance between adjacent battery plates 4 with gaps 5 is 2mm-8 mm. The embossing surface 3 is provided with a projection unit 31. The protrusion unit 31 is shaped as a triangular prism. The reflecting layer 6 is one or more of a white glaze coating layer, an alumina layer and a white paint high-reflecting material. The material of the antireflection film 7 is silicon dioxide. Transparent adhesive films are arranged between the front photovoltaic glass 1 and the plurality of battery pieces 4, and transparent adhesive films are also arranged between the back photovoltaic glass 2 and the plurality of battery pieces 4.
Comparative example
Compared with a conventional 60 assembly, the common float grid back glass and the antireflection film back glass are adopted respectively, the sheet interval is set to be 6mm, the cell sheet is a perc double-sided cell sheet, and other materials are the same.
TABLE 1
| Common float grid | Antireflection film back glass | |
| Front side power | 332.5 | 333.6 |
| Back side power | 260.3 | 267.4 |
This subtract anti-membrane back of body glass to the positive power of subassembly promote unobvious, nevertheless to subassembly back power promotion very big, compare ordinary float process net subassembly, but the back can promote power 2.72%, along with the promotion of two-sided battery technique, power promotion proportion can also be higher.
It should be noted that the front incident light ray a reaches the cell 4 through the front photovoltaic glass 1, and a small amount of the back incident light ray B reaches the cell 4 through the back photovoltaic glass. The front incident light A is incident through the front photovoltaic glass 1 and reaches the reflecting layer 6 through the gap of the cell 4, and the light A reaches the cell 4 through the reflection of the reflecting layer 6. Most of the reflected light rays a irradiate the front side of the cell 4, and a small part of the reflected light rays a irradiate the back side of the cell 4. The antireflection film 7 can reflect a small amount of back overflow light to the back of the battery plate 4, so that the back power of the assembly is improved.
Example two
As shown in fig. 5, the difference from the first embodiment is that the projection unit 31 has a quadrangular prism shape.
EXAMPLE III
As shown in fig. 6, the difference from the first embodiment is that the shape of the projection unit 31 is a half cylinder.
Example four
As shown in fig. 7, the difference from the first embodiment is that the shape of the convex unit 31 is an irregular diffuse reflection structure.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A photovoltaic module having good backsheet acceptance, comprising:
front-side photovoltaic glass (1);
the back photovoltaic glass (2) is arranged opposite to the front photovoltaic glass (1), and the outer surface of the back photovoltaic glass (2) is provided with an embossing surface (3);
the solar photovoltaic glass comprises a plurality of battery pieces (4), wherein the battery pieces (4) are distributed between the front photovoltaic glass (1) and the back photovoltaic glass (2) in an array manner, and gaps (5) are formed between the adjacent battery pieces (4);
the reflecting layer (6) is arranged on the outer surface of the back photovoltaic glass (2), and the reflecting layer (6) is positioned at the position of the gap (5) in the orthographic projection of the outer surface of the back photovoltaic glass (2);
the antireflection film (7) is arranged on the outer surface of the reflecting layer (6), and the antireflection film (7) covers the outer surface of the whole back photovoltaic glass (2).
2. The photovoltaic module with good back-plate light acceptance according to claim 1, characterized in that the distance of the orthographic projection of the light-reflecting layer (6) beyond the gap (5) is S, which ranges from 0 to 10 mm.
3. The photovoltaic module with good backplane light acceptance according to claim 1, characterized in that each gap (5) is provided with a light reflecting layer (6) at the position of the orthographic projection of the outer surface of the back photovoltaic glass (2).
4. The photovoltaic module with good backplane light acceptance according to claim 1, characterized in that a light reflecting layer (6) is further provided on the outer surface of the back photovoltaic glass (2) near the edge.
5. The photovoltaic module with good backplane light acceptance according to claim 1, characterized in that the distance with gaps (5) between adjacent cells (4) is 2mm-8 mm.
6. Photovoltaic module with good backsheet acceptance according to claim 1, characterized in that the embossed face (3) is provided with raised elements (31).
7. The photovoltaic module with good backplane light acceptance according to claim 6, characterized in that the protruding units (31) are formed as triangular, quadrangular or semi-cylindrical prisms.
8. The photovoltaic module with good back-sheet light acceptance according to claim 1, characterized in that the light reflecting layer (6) is one or more of a white glazed layer, an aluminum oxide layer, a white painted highly light reflecting material.
9. The photovoltaic module with good backplane light acceptance according to claim 1, characterized in that the material of the antireflection film (7) is silicon dioxide.
10. The photovoltaic module with good backplane light acceptance according to claim 1, characterized in that the front photovoltaic glass (1) is bonded to the plurality of cell pieces (4), and the back photovoltaic glass (2) is bonded to the plurality of cell pieces (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011072388.8A CN112018205A (en) | 2020-10-09 | 2020-10-09 | Photovoltaic module with good backboard light acceptance rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011072388.8A CN112018205A (en) | 2020-10-09 | 2020-10-09 | Photovoltaic module with good backboard light acceptance rate |
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| Publication Number | Publication Date |
|---|---|
| CN112018205A true CN112018205A (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011072388.8A Pending CN112018205A (en) | 2020-10-09 | 2020-10-09 | Photovoltaic module with good backboard light acceptance rate |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114864717A (en) * | 2022-05-07 | 2022-08-05 | 广州祥源涞亮均新能源技术有限公司 | Photovoltaic glass control system |
-
2020
- 2020-10-09 CN CN202011072388.8A patent/CN112018205A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114864717A (en) * | 2022-05-07 | 2022-08-05 | 广州祥源涞亮均新能源技术有限公司 | Photovoltaic glass control system |
| CN114864717B (en) * | 2022-05-07 | 2024-04-16 | 广州祥源涞亮均新能源技术有限公司 | Photovoltaic glass control system |
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