CN220041880U - TOPCon battery is with high backplate that blocks water - Google Patents
TOPCon battery is with high backplate that blocks water Download PDFInfo
- Publication number
- CN220041880U CN220041880U CN202321212911.1U CN202321212911U CN220041880U CN 220041880 U CN220041880 U CN 220041880U CN 202321212911 U CN202321212911 U CN 202321212911U CN 220041880 U CN220041880 U CN 220041880U
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- Prior art keywords
- layer
- water
- weather
- thickness
- blocking
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 239000010410 layer Substances 0.000 claims abstract description 55
- 239000002346 layers by function Substances 0.000 claims abstract description 25
- 239000011241 protective layer Substances 0.000 claims abstract description 17
- 239000012790 adhesive layer Substances 0.000 claims abstract description 12
- 239000000956 alloy Substances 0.000 claims abstract description 8
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 8
- 229920000098 polyolefin Polymers 0.000 claims abstract description 8
- 230000000903 blocking effect Effects 0.000 claims description 31
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 6
- 239000011527 polyurethane coating Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 claims 4
- 229920002799 BoPET Polymers 0.000 claims 1
- 238000002834 transmittance Methods 0.000 abstract description 4
- 230000007774 longterm Effects 0.000 abstract description 3
- 239000011247 coating layer Substances 0.000 description 6
- 239000010408 film Substances 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 238000007747 plating Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- 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
Abstract
The utility model relates to the technical field of solar cells, in particular to a high-water-resistance backboard for a TOPCon battery, which comprises a weather-resistant PET layer, an undercoat layer coated on the upper surface of the weather-resistant PET layer, a water-resistance functional layer arranged on the upper surface of the undercoat layer, a protective layer arranged on the upper surface of the water-resistance functional layer, an adhesive layer arranged on the upper surface of the protective layer and a polyolefin alloy film layer arranged on the upper surface of the adhesive layer. The high water-blocking backboard provided by the utility model not only provides extremely low water vapor transmittance, but also ensures the long-term weather resistance of the product through the protection of the water-blocking functional layer.
Description
Technical Field
The utility model relates to the technical field of solar cells, in particular to a high water blocking backboard for a TOPCon battery.
Background
The solar cell backboard is an important component of the photovoltaic module, is positioned at the outermost part of the photovoltaic module, plays roles of protecting, insulating, blocking water vapor and the like, and the novel solar cell is very rapid in development, wherein the TOPCon cell has high requirements on the blocking property of the water vapor. In order to improve the water blocking performance of the solar cell backboard, a layer of water blocking layer is added on the basis of the original solar cell backboard structure, but the water blocking layer tends to have the problem of layering after aging.
Disclosure of Invention
In order to solve the problem of ageing layering of a water-resistant layer in the prior art, the utility model aims to provide the high-water-resistant backboard for the TOPCon battery, which can not only meet the requirements of TOPCon battery pieces, but also meet the ageing test requirements of products.
The aim of the utility model is achieved by the following technical scheme: the utility model provides a TOPCon battery is with high backplate that blocks water, includes resistant PET layer, the coating of nai weather PET layer upper surface, sets up the functional layer that blocks water on the primer upper surface, sets up the protective layer of functional layer upper surface that blocks water, sets up the adhesive layer of protective layer upper surface to and set up the polyolefin alloy thin film layer at adhesive layer upper surface.
Further, the weather-resistant PET layer is transparent or white and has a thickness of 40 to 300. Mu.m, preferably 40 μm, 165 μm or 300. Mu.m.
Further, the primer layer is a polyurethane coating or an acrylic coating having a thickness of 0.05 to 2 μm, preferably 0.05 μm, 1 μm or 2 μm.
Further, the water-blocking functional layer is a silicon oxide layer or an aluminum oxide material layer, and the thickness of the water-blocking functional layer is 1-20nm, preferably 1nm, 10nm or 20nm.
Further, the protective layer is a modified polyurethane coating or a modified acrylic coating having a thickness of 0.05 to 10 μm, preferably 0.05 μm, 4 μm or 10 μm.
Further, the thickness of the adhesive layer is 0 μm or 3 to 20 μm, preferably 0 μm, 3 μm, 10 μm or 20 μm.
Further, the polyolefin alloy film layer has a thickness of 0 μm or 15 to 400 μm, preferably 0 μm, 15 μm, 165 μm or 400 μm.
The utility model has the beneficial effects that: due to the particularity of the solar backboard, the backboard is required to be used outdoors for more than 30 years, the high water-blocking backboard not only provides extremely low water vapor transmittance, but also ensures the long-term weather resistance of the product through the protection of the water-blocking functional layer.
Drawings
FIG. 1 is a cross-sectional view of a high water blocking backsheet in embodiment 1 of the present utility model;
FIG. 2 is a cross-sectional view of the high water blocking backsheet of embodiment 2 of the present utility model;
fig. 3 is a cross-sectional view of the high water blocking backsheet of embodiment 3 of the present utility model.
The reference numerals are: a 1-polyolefin alloy film layer, a 2-adhesive layer, a 3-protective layer, a 4-water-blocking functional layer, a 5-base coat layer and a 6-weather-resistant PET layer.
Detailed Description
The present utility model is further described below with reference to examples and figures 1-3, which are not intended to be limiting, for the purpose of facilitating understanding of those skilled in the art.
Example 1
Referring to fig. 1, a TOPcon battery high-water-blocking backboard comprises a weather-resistant PET layer 6, an undercoat layer 5 coated on the upper surface of the weather-resistant PET layer 6, a water-blocking functional layer 4 arranged on the upper surface of the undercoat layer 5, a protective layer 3 arranged on the upper surface of the water-blocking functional layer 4, an adhesive layer 2 arranged on the upper surface of the protective layer 3, and a polyolefin alloy film layer 1 arranged on the upper surface of the adhesive layer 2.
The high water blocking backboard adopting the structural characteristics in the embodiment not only provides extremely low water vapor transmittance, but also ensures the long-term weather resistance of the product through the protection of the water blocking functional layer 4.
In this embodiment, the weather-resistant PET layer 6 is white and has a thickness of 165. Mu.m.
The weather-resistant PET layer 6 adopted in the embodiment has very excellent water resistance, can improve the barrier capability of the backboard to water vapor, is provided with the water blocking functional layer 4 to further enhance the water resistance, and provides the high water blocking solar cell backboard for the 1500V photovoltaic module, wherein the water vapor transmittance is below 0.1g/m 2.24H.
In this embodiment, the water blocking functional layer 4 is a silicon oxide layer, and the thickness thereof is 20nm.
In the embodiment, the silicon oxide layer is formed by vapor plating the water blocking functional layer 4 on the bottom coating 5 by vapor plating technology, so that the water blocking capability of the solar back plate can be improved, and the data of the solar back plate can be maintained below 0.1g/m 2.24H.
In this embodiment, the protective layer 3 is a modified acrylic coating layer having a thickness of 4 μm; the primer layer 5 is an acrylic coating layer having a thickness of 1 μm.
In this embodiment, the thickness of the adhesive layer 2 is 10 μm; the thickness of the polyolefin alloy film layer 1 was 165. Mu.m.
Example 2
Referring to fig. 2, a high water blocking back plate for TOPcon battery comprises a weather-proof PET layer 6, an undercoat layer 5 coated on the upper surface of the weather-proof PET layer 6, a water blocking functional layer 4 arranged on the upper surface of the undercoat layer 5, and a protective layer 3 arranged on the upper surface of the water blocking functional layer 4.
In this embodiment, the weather-resistant PET layer 6 is white and has a thickness of 150. Mu.m.
In this embodiment, the water blocking functional layer 4 is a silicon oxide layer, and the thickness thereof is 15nm.
In this embodiment, the protective layer 3 is a modified acrylic coating layer having a thickness of 6 μm; the primer layer 5 is an acrylic coating layer having a thickness of 1 μm.
Example 3
Referring to fig. 3, a high water blocking back plate for TOPcon battery comprises a weather-proof PET layer 6, an undercoat layer 5 coated on the upper surface of the weather-proof PET layer 6, a water blocking functional layer 4 arranged on the upper surface of the undercoat layer 5, and a protective layer 3 arranged on the upper surface of the water blocking functional layer 4.
In this embodiment, the weather-resistant PET layer 6 is white and has a thickness of 300. Mu.m.
In this embodiment, the water blocking functional layer 4 is a silicon oxide layer, and the thickness thereof is 20nm.
In this embodiment, the protective layer 3 is a modified acrylic coating layer having a thickness of 6 μm; the primer layer 5 is an acrylic coating layer having a thickness of 1 μm.
The above embodiments are preferred embodiments of the present utility model, and besides, the present utility model may be implemented in other ways, and any obvious substitution is within the scope of the present utility model without departing from the concept of the present utility model.
Claims (7)
1. A high water blocking back plate for TOPcon batteries, characterized in that: the weather-proof PET film comprises a weather-proof PET layer, an undercoat layer coated on the upper surface of the weather-proof PET layer, a water-blocking functional layer arranged on the upper surface of the undercoat layer, a protective layer arranged on the upper surface of the water-blocking functional layer, an adhesive layer arranged on the upper surface of the protective layer, and a polyolefin alloy film layer arranged on the upper surface of the adhesive layer.
2. The high water blocking back plate for a TOPcon battery according to claim 1, wherein: the weather-proof PET layer is transparent or white, and the thickness of the weather-proof PET layer is 40-300 mu m.
3. The high water blocking back plate for a TOPcon battery according to claim 1, wherein: the bottom coating is a polyurethane coating or an acrylic coating, and the thickness of the bottom coating is 0.05-2 mu m.
4. The high water blocking back plate for a TOPcon battery according to claim 1, wherein: the water-blocking functional layer is a silicon oxide layer or an aluminum oxide material layer, and the thickness of the water-blocking functional layer is 1-20nm.
5. The high water blocking back plate for a TOPcon battery according to claim 1, wherein: the protective layer is a modified polyurethane coating or a modified acrylic coating, and the thickness of the protective layer is 0.05-10 mu m.
6. The high water blocking back plate for a TOPcon battery according to claim 1, wherein: the thickness of the adhesive layer is 0 μm or 3-20 μm.
7. The high water blocking back plate for a TOPcon battery according to claim 1, wherein: the thickness of the polyolefin alloy film layer is 0 μm or 15-400 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321212911.1U CN220041880U (en) | 2023-05-18 | 2023-05-18 | TOPCon battery is with high backplate that blocks water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321212911.1U CN220041880U (en) | 2023-05-18 | 2023-05-18 | TOPCon battery is with high backplate that blocks water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220041880U true CN220041880U (en) | 2023-11-17 |
Family
ID=88744167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321212911.1U Active CN220041880U (en) | 2023-05-18 | 2023-05-18 | TOPCon battery is with high backplate that blocks water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220041880U (en) |
-
2023
- 2023-05-18 CN CN202321212911.1U patent/CN220041880U/en active Active
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