CN220604698U - Photovoltaic glass cover plate and photovoltaic module - Google Patents
Photovoltaic glass cover plate and photovoltaic module Download PDFInfo
- Publication number
- CN220604698U CN220604698U CN202320467208.9U CN202320467208U CN220604698U CN 220604698 U CN220604698 U CN 220604698U CN 202320467208 U CN202320467208 U CN 202320467208U CN 220604698 U CN220604698 U CN 220604698U
- Authority
- CN
- China
- Prior art keywords
- cover plate
- glass cover
- photovoltaic glass
- photovoltaic
- heterogeneous
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000011521 glass Substances 0.000 title claims abstract description 76
- 229910000679 solder Inorganic materials 0.000 claims description 4
- 230000004313 glare Effects 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 24
- 230000003287 optical effect Effects 0.000 abstract description 7
- 238000002834 transmittance Methods 0.000 description 9
- 239000002313 adhesive film Substances 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model provides a photovoltaic glass cover plate and a photovoltaic module, and belongs to the technical field of photovoltaic; the surface of the photovoltaic glass cover plate is provided with a plurality of heterogeneous structures, so that multiple reflections of light on the surface of the photovoltaic glass cover plate are realized, and the light trapping performance of the photovoltaic glass cover plate is improved; the photovoltaic glass cover plate is transparent and has regular strong and weak light areas, and the sizes and positions of the strong light areas and the weak light areas can be controlled by controlling structural parameters; the photovoltaic module prepared based on the photovoltaic glass cover plate can enable the welding strip to be located in a weak light area, so that strong light can just irradiate the battery piece and is not shielded by the welding strip, the utilization rate of light is greatly improved, and the module power reduction caused by optical loss is avoided.
Description
Technical Field
The utility model belongs to the technical field of photovoltaics, and particularly relates to a photovoltaic glass cover plate and a photovoltaic assembly.
Background
The photovoltaic module is a device for converting light energy into electric energy, and reducing the power loss of the photovoltaic module is an important content for optimizing the manufacturing process of the module. Photovoltaic module power losses can be categorized into optical losses and electrical losses. In the prior art, compared with the situation that sunlight directly irradiates the battery, a welding strip and a grid line paved on the surface of the battery piece can shield the battery piece, so that the difference of irradiation quantity is generated to cause optical loss, the actual light receiving area of the battery piece is reduced, and finally, the power of the assembly is reduced.
In addition, the light transmittance of the photovoltaic glass is an important factor influencing the conversion efficiency of the solar photovoltaic cell, and the higher the light transmittance is, the higher the light utilization degree of the component is, so that the improvement of the light transmittance of the photovoltaic glass is a great research subject in the photovoltaic industry. The most commonly used photovoltaic module cover plates are glass with flat surfaces, about 4% of incident sunlight is reflected out of the glass surface due to fresnel reflection and does not penetrate into the module, and the proportion of reflected sunlight increases with increasing incidence angle, resulting in a substantial reduction in the amount of light penetrating into the module.
Accordingly, it is desirable to provide a photovoltaic module with high conversion efficiency.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model provides a photovoltaic glass cover plate and a photovoltaic module; the surface of the photovoltaic glass cover plate is provided with a plurality of heterogeneous structures, so that multiple reflections of light on the surface of the photovoltaic glass cover plate are realized, and the light trapping performance of the photovoltaic glass cover plate is improved; the photovoltaic glass cover plate is transparent and has regular strong and weak light areas, and the sizes and positions of the strong light areas and the weak light areas can be controlled by controlling structural parameters; the photovoltaic module prepared based on the photovoltaic glass cover plate can enable the welding strip to be located in a weak light area, so that strong light can just irradiate the battery piece and is not shielded by the welding strip, the utilization rate of light is greatly improved, and the module power reduction caused by optical loss is avoided.
The utility model firstly provides a photovoltaic glass cover plate, wherein the surface of the photovoltaic glass cover plate comprises a plurality of heterogeneous structures, and the heterogeneous structures are three-dimensional structures with inclined planes.
Preferably, the heterogeneous structure comprises one or more of a pyramidal structure, an inverted pyramidal structure, a trench structure or an inverted cone structure.
Preferably, when the heterogeneous structure is a pyramid structure, an inverted pyramid structure or an inverted cone structure, the side length of the heterogeneous structure is 1 μm-5 mm;
when the heterogeneous structure is a groove structure, the groove spacing of the groove structure is 10 mu m-5 mm.
Preferably, when the heterogeneous structure is a pyramid structure, an inverted pyramid structure or an inverted cone structure, the heterogeneous structure is arranged in a grid shape on the photovoltaic glass cover plate;
when the heterogeneous structure is a groove structure, the heterogeneous structure is equidistantly distributed on the photovoltaic glass cover plate.
Preferably, the inclined plane of the heterogeneous structure forms an included angle of 30-80 degrees with the horizontal plane.
Preferably, the surface light transmission of the photovoltaic glass cover plate comprises a regular strong light area and a regular weak light area; the positions and the sizes of the strong light area and the weak light area of the photovoltaic glass are adjusted according to the needs by controlling the sizes, angles and thicknesses of the heterogeneous structures.
Preferably, when the heterogeneous structure is a trench structure, the strong light region is the top of the heterogeneous structure.
The utility model also provides a photovoltaic module, which comprises the photovoltaic glass cover plate, and the weak light area of the photovoltaic glass cover plate is aligned with the welding strip in the photovoltaic module.
Preferably, the strong light area of the photovoltaic glass cover plate avoids the positions of the welding strips and the main grids on the battery piece.
Preferably, the photovoltaic module comprises a battery piece, a welding strip, a photovoltaic glass cover plate and a back plate; the backboard is crosslinked with the photovoltaic glass cover plate and the adhesive film; the welding strip is paved on the surface of the battery piece along the main grid direction of the battery piece, the welding strip is aligned with the weak light area of the photovoltaic glass cover plate, and the photovoltaic glass cover plate and the backboard which are crosslinked with the adhesive film are respectively packaged on the upper surface and the lower surface of the battery piece through lamination.
Preferably, the strong light area of the photovoltaic glass cover plate avoids the positions of the welding strip and the main grid on the battery piece.
Preferably, the adhesive film comprises an EVA adhesive film.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, the flat structure of the surface of the photovoltaic glass cover plate is adjusted to be an isomerism structure, the isomerism structure comprises one or more of a pyramid structure, an inverted pyramid structure, a groove structure or an inverted cone structure, the isomerism structure can effectively realize multiple reflection of light on the surface of the glass cover plate, and the light trapping performance of the photovoltaic glass cover plate is improved.
The utility model controls the strong light area under the pyramid tower tip by controlling the cover plate structure parameters such as the size, the angle, the thickness and the like of the heterogeneous structures, and the weak light area is arranged at the groove between the heterogeneous structures. And the position of the welding strip is overlapped with the position of the light scattering area by utilizing the illumination characteristic, namely, when the cover plate is packaged, the welding strip is aligned with the boundary groove of the surface heterogeneous structure of the photovoltaic glass cover plate, and strong light can just irradiate the battery piece at the moment and is not blocked by the welding strip, so that the utilization rate of light is greatly improved.
According to the utility model, the surface structure of the photovoltaic glass cover plate is matched with the position of the welding strip, so that the shading effect of the manufactured assembly welding strip is reduced to the minimum, the optical loss of the assembly is reduced, the actual light receiving quantity of the battery piece is improved, and the power generation performance of the assembly is improved. The structure not only reduces the cost of manufacturing components for unit energy production, but also reduces the cost of installation.
Drawings
Fig. 1 is a schematic view of a photovoltaic glass cover plate with a pyramid structure on the surface.
Fig. 2 is a graph of light transmittance of a photovoltaic glass cover plate with a pyramid structure on the surface.
Fig. 3 is a schematic view of a photovoltaic glass cover plate with a groove structure on the surface.
Fig. 4 is a graph of light transmittance of a photovoltaic glass cover plate with a groove structure on the surface.
Fig. 5 is a schematic structural view of a photovoltaic glass cover plate with an inverted pyramid structure on the surface.
Fig. 6 is a schematic structural view of a photovoltaic glass cover plate with an inverted cone structure on the surface.
Fig. 7 is a schematic view of the solder ribbon position.
Reference numerals:
1-an isomeric structure; 2-intense light region; 3-low light region.
Detailed Description
The utility model will be further described with reference to the drawings and the specific embodiments, but the scope of the utility model is not limited thereto.
Example 1:
as shown in fig. 1 to 6, the utility model provides a photovoltaic glass cover plate, wherein the surface of the photovoltaic glass cover plate comprises a plurality of heterogeneous structures 1, and the heterogeneous structures 1 are three-dimensional structures with inclined planes. Wherein the heterogeneous structure 1 comprises one or more of a pyramid structure, an inverted pyramid structure, a trench structure or an inverted cone structure. In a specific implementation process, the heterogeneous structures 1 on the surface of the photovoltaic glass cover plate can be the same or different heterogeneous structures 1 and are arranged and combined, and when the heterogeneous structures 1 are in a pyramid structure, an inverted pyramid structure or an inverted cone structure, the side length of the heterogeneous structures 1 is 10 mu m-5 mm; when the heterogeneous structure 1 is a trench structure, the trench spacing of the trench structure is 10 μm to 5mm. When the heterogeneous structure 1 is in a pyramid structure, an inverted pyramid structure or an inverted cone structure, the heterogeneous structure 1 is arranged in a grid shape on the photovoltaic glass cover plate; when the heterogeneous structure 1 is a groove structure, the heterogeneous structure 1 is equidistantly distributed on the photovoltaic glass cover plate. The inclined plane of the heterogeneous structure 1 forms an included angle of 30-80 degrees with the horizontal plane.
As shown in fig. 1 to 6, the surface light transmission of the photovoltaic glass cover plate comprises a regular strong light area 2 and a weak light area 3; the positions and the sizes of the strong light area 2 and the weak light area 3 of the photovoltaic glass are adjusted according to the needs by controlling the size, the angle and the thickness of the heterogeneous structure 1. When the heterogeneous structure 1 is a pyramid structure or a groove structure, the strong light area 2 is the top end of the heterogeneous structure 1, and the weak light area 3 is the junction of adjacent heterogeneous structures 1.
The light transmittance of the plane glass and the different heterostructures according to the utility model were examined in this example, and the examination results are shown in table 1:
TABLE 1 light transmittance of photovoltaic glass cover plates with different surface structures
| Surface structure | Transmittance of light | Light transmission gain (relative to plane) |
| Plane surface | 91.7％ | |
| Pyramid-shaped | 92.2％ | 0.55％ |
| Inverted pyramid | 93.4％ | 1.85％ |
| Groove(s) | 93.9％ | 2.40％ |
| Hexagonal pyramid | 93.7％ | 2.18 |
As can be seen from Table 1, the transmittance of the photovoltaic glass cover plate with the heterogeneous surface is higher than that of the plane glass, and the light trapping performance is improved.
Example 2:
as shown in fig. 7, the present utility model prepares a photovoltaic module based on the photovoltaic glass cover plate described in example 1, the photovoltaic module including a battery sheet, a solder strip, a photovoltaic glass cover plate, and a back plate; the backboard is crosslinked with the photovoltaic glass cover plate and the adhesive film; the welding strips are paved on the surface of the battery piece along the main grid direction of the battery piece, the welding strips shown in a black frame in the figure are aligned with the weak light area 3 of the photovoltaic glass cover plate, and the photovoltaic glass cover plate and the backboard which are crosslinked with the adhesive film are respectively packaged on the upper surface and the lower surface of the battery piece through lamination. The strong light area 2 of the photovoltaic glass cover plate avoids the position of the main grid (welding strip) on the battery piece.
In the specific implementation process, a photovoltaic glass cover plate with a surface structure of a pyramid with an included angle of 45 degrees and a side length of 1.8mm is adopted to replace a traditional plane cover plate, the photovoltaic glass cover plate, a battery piece and a welding strip are assembled into a photovoltaic module, the welding strip in the photovoltaic module is overlapped with a weak light area of the photovoltaic glass cover plate, and the welding strip is completely protected from light, so that the 9BB module is obtained. Through tests, compared with the traditional plane cover plate, the photovoltaic glass cover plate with the surface structure of the pyramid with the side length of 1.8mm and the included angle of 45 degrees can achieve the optical gain of 2.6%.
In summary, the utility model matches the surface structure of the photovoltaic glass cover plate with the position of the welding strip, the shading effect of the manufactured assembly welding strip is reduced to the minimum, the optical loss of the assembly is reduced, the actual light receiving quantity of the battery piece is improved, and the power generation performance of the assembly is improved.
The examples are preferred embodiments of the present utility model, but the present utility model is not limited to the above-described embodiments, and any obvious modifications, substitutions or variations that can be made by one skilled in the art without departing from the spirit of the present utility model are within the scope of the present utility model.
Claims (5)
1. The photovoltaic glass cover plate is characterized in that the surface of the photovoltaic glass cover plate comprises a plurality of heterogeneous structures (1), and the heterogeneous structures (1) are three-dimensional structures with inclined planes;
the heterogeneous structure (1) comprises one or more of a trench structure or an inverted cone structure;
when the heterogeneous structure (1) is an inverted cone structure, the heterogeneous structure (1) is arranged on the photovoltaic glass cover plate in a grid shape;
when the heterogeneous structure (1) is a groove structure, the heterogeneous structure (1) is equidistantly distributed on the photovoltaic glass cover plate;
the inclined plane of the heterogeneous structure (1) forms an included angle of 30-80 degrees with the horizontal plane;
when the heterogeneous structure (1) is an inverted cone structure, the side length of the heterogeneous structure (1) is 10 mu m-5 mm;
when the heterogeneous structure (1) is a groove structure, the groove spacing of the heterogeneous structure (1) is 10 mu m-5 mm.
2. The photovoltaic glass cover plate according to claim 1, characterized in that the photovoltaic glass cover plate surface, when transmitting light, comprises regular strong light areas (2) and weak light areas (3); the positions and the sizes of the strong light area (2) and the weak light area (3) of the photovoltaic glass are adjusted according to the needs by controlling the size, the angle and the thickness of the heterogeneous structure (1).
3. Photovoltaic glass cover plate according to claim 2, characterized in that when the heterogeneous structure (1) is a trench structure, the intense light zone (2) is the top of the heterogeneous structure.
4. A photovoltaic module, characterized in that it comprises a photovoltaic glass cover plate according to any one of claims 1 to 3, the weak light area (3) of which is aligned with a solder strip in the photovoltaic module.
5. The photovoltaic module according to claim 4, characterized in that the glare area (2) of the photovoltaic glass cover plate is kept away from the position of the solder strips and the main grid on the cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320467208.9U CN220604698U (en) | 2023-03-13 | 2023-03-13 | Photovoltaic glass cover plate and photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320467208.9U CN220604698U (en) | 2023-03-13 | 2023-03-13 | Photovoltaic glass cover plate and photovoltaic module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220604698U true CN220604698U (en) | 2024-03-15 |
Family
ID=90179060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320467208.9U Active CN220604698U (en) | 2023-03-13 | 2023-03-13 | Photovoltaic glass cover plate and photovoltaic module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220604698U (en) |
-
2023
- 2023-03-13 CN CN202320467208.9U patent/CN220604698U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102544174B (en) | Solar cell assembly for increasing light energy utilization ratio | |
| CN102347709A (en) | Tapered stereo-shaped array solar cell power generation system | |
| CN110931584A (en) | Folded plate-shaped photovoltaic assembly, front glass used by same and photovoltaic system | |
| WO2011055446A1 (en) | Solar cell module | |
| CN220604698U (en) | Photovoltaic glass cover plate and photovoltaic module | |
| CN203536455U (en) | Solar cell panel | |
| CN109148629A (en) | A kind of stereochemical structure solar battery | |
| CN111640810B (en) | Embossed glass with tapered suede and solar cell module | |
| CN203608146U (en) | Flat type solar concentrator | |
| CN106409953B (en) | Solar cell coated copper wire grid current collector structure and preparation method | |
| CN216563153U (en) | High-power anti-dazzle photovoltaic module | |
| CN202662647U (en) | High-absorption interconnection welding strip | |
| CN2854926Y (en) | Solar multiplier light generator | |
| CN114678437A (en) | Photovoltaic module | |
| CN204651330U (en) | A kind of solar battery structure | |
| CN202957260U (en) | Solar single-crystal cell piece with high light availability | |
| CN206149207U (en) | Solar generation device | |
| CN202977488U (en) | Solar energy polycrystalline cell having high light availability | |
| CN107146819B (en) | Novel thin film solar cell | |
| CN205104506U (en) | Leaded light solar energy component | |
| CN211208460U (en) | Synergistic solar photovoltaic module | |
| CN208225891U (en) | A kind of black photovoltaic welding belt | |
| CN115000223B (en) | Solar cell with multiple main grids | |
| CN217767260U (en) | Reflecting device for photovoltaic system and photovoltaic system | |
| CN216054738U (en) | Photovoltaic solder strip with polygonal-flat integrated structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |