CN211208460U - Synergistic solar photovoltaic module - Google Patents
Synergistic solar photovoltaic module Download PDFInfo
- Publication number
- CN211208460U CN211208460U CN201922429366.1U CN201922429366U CN211208460U CN 211208460 U CN211208460 U CN 211208460U CN 201922429366 U CN201922429366 U CN 201922429366U CN 211208460 U CN211208460 U CN 211208460U
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- China
- Prior art keywords
- eva
- eva layer
- photovoltaic module
- solar photovoltaic
- layer
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- 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.)
- Expired - Fee Related
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- 230000002195 synergetic effect Effects 0.000 title claims abstract description 7
- 239000005341 toughened glass Substances 0.000 claims abstract description 8
- 238000002834 transmittance Methods 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 4
- 229920001688 coating polymer Polymers 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- 238000001579 optical reflectometry Methods 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000002310 reflectometry Methods 0.000 abstract description 3
- 238000009826 distribution Methods 0.000 abstract description 2
- 239000005022 packaging material Substances 0.000 abstract description 2
- 238000005286 illumination Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Images
Classifications
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- 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
Abstract
The utility model discloses a synergistic solar photovoltaic module, include from last toughened glass, first EVA layer, solar wafer, second EVA layer, third EVA layer and the backplate that sets up extremely down, first EVA layer is ultraviolet to be less than 280 nm's high EVA of passing through by the wavelength, and the second EVA layer is ultraviolet to be 360 nm's ordinary EVA by the wavelength, and the third EVA layer is the white EVA that upper surface texturing handled, and the slot of upper surface distribution regular spread. The utility model discloses a cooperation is used and is had high luminousness and high reflectivity's packaging material, has realized the high-efficient utilization to the regional sunlight of subassembly non-solar wafer, has promoted the whole output and the conversion efficiency of subassembly, has guaranteed the quality and the reliability of subassembly.
Description
Technical Field
The utility model relates to a solar energy technical field, in particular to increase solar PV modules.
Background
Solar energy is more and more concerned as a clean and renewable pollution-free new energy source, the application of the solar energy is more and more extensive, and the most important thing in the utilization of the solar energy is photovoltaic power generation at present. In a specific application, a plurality of solar cells are generally formed into a photovoltaic module, and then the plurality of photovoltaic modules are connected in series and in parallel and combined with an inverter, a power distribution cabinet and other components to form a photovoltaic system.
The photovoltaic module widely used at present mainly comprises toughened glass, EVA, a solar cell sheet packaged between two layers of EVA and a back plate. The cell absorbs sunlight penetrating through the toughened glass to generate current, and when the assembly is connected with a load, power is output.
Since the output power of the device is proportional to the illumination intensity of the surface, increasing the illumination intensity will directly increase the output power of the device. At present, the light energy utilization rate of a photovoltaic module is generally improved in the industry by adopting the following modes so as to increase the illumination intensity on the surface of a solar cell piece: 1) using coated glass; 2) using a reflective welding strip; 3) pasting a reflective film on the surface of the welding strip; 4) white EVA is used. For the fourth mode, although the output power of the module can be improved through the high reflectivity of the white EVA to light, the white EVA is unstable in performance, and there are many problems in the production process, such as the wavy lines on the surface of the white EVA, the battery piece and the solder strip shielded by the white EVA overflow glue, and the reliability and weather resistance of the white EVA, which seriously affect the quality of the module. Therefore, how to improve the light energy utilization rate of the device and ensure the quality and reliability of the device is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
To above problem, the utility model aims at providing a synergistic solar photovoltaic module has high reflectivity's packaging material through the use, has realized the high-efficient utilization to the regional sunlight of subassembly non-battery piece, has promoted the whole output and the conversion efficiency of subassembly, has guaranteed the quality and the reliability of subassembly.
The utility model discloses a can realize like this: the utility model provides a synergistic solar photovoltaic module, includes from last toughened glass, first EVA layer, solar wafer, second EVA layer, third EVA layer and the backplate that sets up extremely down, first EVA layer is that the ultraviolet cutoff wavelength is less than 280 nm's high EVA that passes through, and the second EVA layer is the ordinary EVA that the ultraviolet cutoff wavelength is 360nm, and the third EVA layer is the white EVA that upper surface texturing handled.
The thickness of the first EVA layer is 0.45 mm-0.7 mm, and the visible light transmittance is higher than 91%.
The thickness of the second EVA layer is 0.05 mm-0.45 mm, and the visible light transmittance is higher than 91%.
The thickness of the third EVA layer is 0.25 mm-0.6 mm, and the light reflectivity is higher than 90%.
And grooves which are regularly arranged are distributed on the upper surface of the third EVA layer, and the grooves are in one or more of V shape, semi-V shape, pyramid shape, semi-circle shape, semi-ellipse shape, conical shape or triangular cone shape.
The back plate is a composite polymer back plate or a coating polymer back plate or glass.
The utility model has the advantages of, through the first EVA layer that has low ultraviolet cutoff wavelength in solar wafer top setting, guaranteed that the ultraviolet ray can see through this layer EVA and reach the battery piece surface, promoted the utilization ratio of battery piece to solar spectrum especially ultraviolet ray. The second EVA layer has higher ultraviolet cut-off wavelength, forms good barrier to ultraviolet light, has good ultraviolet aging resistance and provides protection for the material of the lower layer. The third EVA layer is white EVA with high light reflection rate, the textured upper surface of the third EVA layer effectively adjusts and optimizes a light reflection path incident to a gap area of the solar cell, reflected light can be utilized by the cell through secondary reflection, waste of reflected light is basically prevented, light energy incident to the surface of the assembly is utilized to the maximum extent, and output power and conversion efficiency of the assembly are greatly improved. In addition, the transparent EVA layer and the white EVA layer are simultaneously used below the solar cell, so that the problems of bubbles, white overflow, wrinkles and the like in the production process of the module are solved, and the quality and the reliability of the module are ensured.
Drawings
Fig. 1 is a cross-sectional view of the present invention.
Wherein, 1 is toughened glass, 2 is first EVA layer, 3 is the solar wafer, 4 is the second EVA layer, 5 is the third EVA layer, 6 is the backplate.
Detailed Description
For further understanding of the technical features and contents of the present invention, reference is made to the following description taken in conjunction with the accompanying drawings.
As shown in fig. 1, a synergistic solar photovoltaic module comprises a toughened glass 1, a first EVA layer 2, a solar cell 3, a second EVA layer 4, a third EVA layer 5 and a back plate 6, which are arranged from top to bottom, wherein the first EVA layer is a high-transmittance EVA with an ultraviolet cut-off wavelength lower than 280nm, the second EVA layer is a common EVA with an ultraviolet cut-off wavelength of 360nm, and the third EVA layer is a white EVA with an upper surface textured treatment. The first EVA layer has very low ultraviolet cut-off wavelength and has high transmittance to ultraviolet light, so that the ultraviolet light in the solar spectrum can reach the surface of the cell through the EVA layer, and the utilization rate of the cell to light in each wave band of the solar spectrum is improved. The second EVA layer has higher ultraviolet cut-off wavelength, forms good barrier to ultraviolet light, has good ultraviolet aging resistance, and provides protection for the third EVA layer and the back plate material of the lower layer.
The third EVA layer is white EVA with high light reflection rate, has a textured upper surface, has high reflection capacity to incident light, and can selectively design the reflection path of the light. In this embodiment, a plurality of V-shaped grooves are regularly arranged on the upper surface of the white EVA layer, and the light reflection path incident to the gap region of the solar cell can be adjusted by setting the inner included angle of the V-shaped grooves. For example, when the included angle in the V-shaped groove is 120 ° to 137 °, the light incident into the V-shaped groove is reflected for the first time, and the reflected light reaches the upper surface of the tempered glass, at this time, the incident angle of the light at the interface between the glass and the air is 43 ° to 60 °, which is greater than the critical angle 42 ° of the glass-air interface, and the light at the interface will be reflected for the second time and be reflected to the surface of the solar cell. Therefore, the texturing structure of the white EVA surface basically prevents the waste of reflected light, realizes the maximum utilization of incident light on the surface of the component, and greatly improves the output power and the conversion efficiency of the component.
The above embodiments are only for the purpose of illustration and are not intended to be limiting, and those skilled in the art can make various changes and modifications without departing from the scope of the present invention. Changes and modifications to the above-described embodiments are intended to fall within the scope of the appended claims, as long as they are within the true spirit of the invention.
Claims (6)
1. The utility model provides a synergistic solar photovoltaic module, includes from last toughened glass, first EVA layer, solar wafer, second EVA layer, third EVA layer and the backplate that sets up extremely down, its characterized in that: the first EVA layer is high-transmittance EVA with the ultraviolet cut-off wavelength being lower than 280nm, the second EVA layer is common EVA with the ultraviolet cut-off wavelength being 360nm, and the third EVA layer is white EVA subjected to upper surface texturing treatment.
2. The solar photovoltaic module of claim 1, wherein: the thickness of the first EVA layer is 0.45 mm-0.7 mm, and the visible light transmittance is higher than 91%.
3. The solar photovoltaic module of claim 1, wherein: the thickness of the second EVA layer is 0.05 mm-0.45 mm, and the visible light transmittance is higher than 91%.
4. The solar photovoltaic module of claim 1, wherein: the thickness of the third EVA layer is 0.25 mm-0.6 mm, and the light reflectivity is higher than 90%.
5. The solar photovoltaic module of claim 1, wherein: and grooves which are regularly arranged are distributed on the upper surface of the third EVA layer, and the grooves are in one or more of V shape, semi-V shape, pyramid shape, semi-circle shape, semi-ellipse shape, conical shape or triangular cone shape.
6. The solar photovoltaic module of claim 1, wherein: the back plate is a composite polymer back plate or a coating polymer back plate or glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922429366.1U CN211208460U (en) | 2019-12-29 | 2019-12-29 | Synergistic solar photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922429366.1U CN211208460U (en) | 2019-12-29 | 2019-12-29 | Synergistic solar photovoltaic module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211208460U true CN211208460U (en) | 2020-08-07 |
Family
ID=71886307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922429366.1U Expired - Fee Related CN211208460U (en) | 2019-12-29 | 2019-12-29 | Synergistic solar photovoltaic module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211208460U (en) |
-
2019
- 2019-12-29 CN CN201922429366.1U patent/CN211208460U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200807 |
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| CF01 | Termination of patent right due to non-payment of annual fee |