CN211605167U - Photovoltaic backboard and photovoltaic module - Google Patents
Photovoltaic backboard and photovoltaic module Download PDFInfo
- Publication number
- CN211605167U CN211605167U CN202020559831.3U CN202020559831U CN211605167U CN 211605167 U CN211605167 U CN 211605167U CN 202020559831 U CN202020559831 U CN 202020559831U CN 211605167 U CN211605167 U CN 211605167U
- Authority
- CN
- China
- Prior art keywords
- layer
- photovoltaic
- thickness
- pet
- range
- 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
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 20
- 239000011888 foil Substances 0.000 claims abstract description 20
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000011737 fluorine Substances 0.000 claims abstract description 17
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 17
- 239000011248 coating agent Substances 0.000 claims abstract description 11
- 238000000576 coating method Methods 0.000 claims abstract description 11
- 239000010410 layer Substances 0.000 claims description 95
- 239000012790 adhesive layer Substances 0.000 claims description 18
- 239000011521 glass Substances 0.000 claims description 14
- 239000002313 adhesive film Substances 0.000 claims description 8
- 239000011247 coating layer Substances 0.000 claims description 7
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 239000006229 carbon black Substances 0.000 claims description 5
- 238000002310 reflectometry Methods 0.000 claims description 4
- 229920001780 ECTFE Polymers 0.000 claims description 3
- 239000002033 PVDF binder Substances 0.000 claims description 3
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229920002620 polyvinyl fluoride Polymers 0.000 claims description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 3
- 239000005030 aluminium foil Substances 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 238000005538 encapsulation Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920006280 packaging film Polymers 0.000 description 1
- 239000012785 packaging film Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- -1 that is Substances 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
Images
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
Landscapes
- Photovoltaic Devices (AREA)
Abstract
The utility model discloses a photovoltaic backboard and a photovoltaic module, wherein the related photovoltaic backboard comprises a PET layer, a weather-proof layer arranged on the back of the PET layer, and an aluminum foil layer, a fluorine-containing coating and a gridding layer which are arranged on the front of the PET layer from bottom to top in sequence; based on the structure of the photovoltaic back plate provided by the utility model, in the application scene of a specific photovoltaic module, the aluminum foil layer can effectively prevent water vapor from permeating from the back of the module to enter the module, and the battery piece can be prevented from being damaged due to the influence of the water vapor; and the weather-resistant layer and the fluorine-containing coating can reduce the influence of external factors such as ultraviolet light on the photovoltaic module, and the reliability of the photovoltaic module can be further improved.
Description
Technical Field
The utility model relates to a photovoltaic field especially relates to a photovoltaic backplate and photovoltaic module.
Background
With the continuous progress of solar cell production technology, the production cost is continuously reduced, the conversion efficiency is continuously improved, and the photovoltaic power generation is increasingly widely applied and becomes an important energy source for power supply. The photovoltaic module formed by the heterojunction solar cell is considered as one of the next generation of high-efficiency cells capable of mass production due to the advantages of low preparation temperature, high cell conversion efficiency, capability of double-sided power generation, large cost reduction space and the like.
Photovoltaic modules related in the prior art generally include a glass cover plate, a back plate made of a polymer material (such as PET), and a heterojunction solar cell sandwiched between the glass cover plate and the back plate and encapsulated by an encapsulation film. However, the sensitivity of the heterojunction solar cell to water vapor and ultraviolet light is higher than that of other types of solar cells, and the problem of performance deterioration of the photovoltaic module caused by factors such as unsatisfactory water blocking effect is likely to occur in the practical application process of the back plate made of the traditional high polymer material.
In view of the above, there is a need to provide an improved solution to the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that prior art exists at least, for realizing the utility model purpose of the aforesaid, the utility model provides a photovoltaic backplate, its concrete design mode as follows.
The utility model provides a photovoltaic backplate, includes the PET layer, photovoltaic backplate still including set up in resistant time layer at the PET layer back and supreme from bottom to top set gradually in positive aluminium foil layer, fluorine-containing coating and the meshing layer in PET layer.
Further, the photovoltaic back plate further comprises a first bonding layer arranged between the PET layer and the weather-resistant layer, a second bonding layer arranged between the PET layer and the aluminum foil layer, and a third bonding layer arranged between the aluminum foil layer and the fluorine-containing coating.
Further, the weather-resistant layer is made of PVF, PVDF, ETFE or ECTFE.
Further, the reflectivity of the gridding layer is less than 10%.
Furthermore, the material of the gridding layer is carbon black.
Further, the thickness range of the photovoltaic back plate is 0.5-0.7 mm.
Further, the thickness of the PET layer ranges from 0.1 mm to 0.2mm, the thickness of the weather-resistant layer ranges from 0.03mm to 0.05mm, the thickness of the aluminum foil layer ranges from 0.3 mm to 0.4mm, the thickness of the fluorine-containing coating layer ranges from 0.02mm to 0.03mm, and the thickness of the gridding layer ranges from 0.02mm to 0.025 mm.
Further, the thickness ranges of the first bonding layer, the second bonding layer and the third bonding layer are 0.01-0.02 mm.
The utility model also provides a photovoltaic module, this photovoltaic module from last to including glass apron, last encapsulation rete, battery piece and lower encapsulation rete down in proper order, photovoltaic module still including set up in encapsulation rete downside is as above photovoltaic backplate down, the gridlines on gridding layer correspond to the peripheral blank region setting of battery piece.
Furthermore, the cell is a heterojunction solar cell.
The utility model has the advantages that: based on the specific structure of the photovoltaic back plate provided by the utility model, in the application scene of the photovoltaic module, the aluminum foil layer can effectively prevent water vapor from soaking from the back of the module to enter the module, and the battery piece can be prevented from being damaged due to the influence of the water vapor; and the weather-resistant layer and the fluorine-containing coating can reduce the influence of external factors such as ultraviolet light on the photovoltaic module, and the reliability of the photovoltaic module can be further improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic cross-sectional view of a photovoltaic module according to the present invention;
fig. 2 is a schematic cross-sectional view of the photovoltaic back plate of the present invention;
FIG. 3 is a schematic view of a distribution of cells in a photovoltaic module;
fig. 4 is a schematic plan view of a gridding layer corresponding to the cell sheet distribution structure of fig. 3.
In the figure, 11 is a glass cover plate, 12 is an upper packaging adhesive film layer, 13 is a battery piece, 130 is a blank region, 14 is a lower packaging adhesive film layer, 15 is a photovoltaic back plate, 151 is a gridding layer, 1511 is a grid line, 1512 is a light-transmitting region, 152 is a fluorine-containing coating layer, 153 is an aluminum foil layer, 154 is a PET layer, 155 is a weather-resistant layer, 1501 is a first adhesive layer, 1502 is a second adhesive layer, and 1503 is a third adhesive layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the utility model provides a photovoltaic module includes glass apron 11, last encapsulation rete 12, battery piece 13 and lower encapsulation rete 14 from last to down in proper order, photovoltaic module is still including setting up in the photovoltaic backplate 15 of the 14 downside of lower encapsulation rete.
Referring to fig. 2, the photovoltaic back sheet 15 of the present invention includes a PET layer 154, a weather-resistant layer 155 disposed on the back of the PET layer 154, and an aluminum foil layer 153, a fluorine-containing coating 152 and a gridding layer 151 disposed on the front of the PET layer 154 in sequence from bottom to top.
Based on the specific structure of the photovoltaic back plate provided by the utility model, in the application scene of the photovoltaic module, the aluminum foil layer 153 can effectively prevent water vapor from soaking from the back of the module to enter the module based on the characteristics of the aluminum foil layer, and the battery piece can be prevented from being damaged due to the influence of the water vapor; the weather-resistant layer 155 is positioned on the back of the PET layer 154, so that the photovoltaic back plate can be prevented from being aged by the external environment; the arrangement of the fluorine-containing coating can further optimize the water blocking and oxidation resistance of the photovoltaic back plate, so that the reliability of the photovoltaic assembly can be comprehensively improved.
As shown in fig. 4, in the photovoltaic module according to the present invention, the gridding layer 151 includes a light-transmitting region 1512 between the grid lines 1511 and the grid lines 1511. As shown in fig. 3 and 4, the periphery of the cell 13 of the photovoltaic module has a blank region 130, and the grid lines 1511 of the grid layer 151 are disposed corresponding to the blank region 130; accordingly, the light-transmitting region 1512 of the grid layer 151 corresponds to the position of the cell 13. Based on this, photovoltaic module's front has better outward appearance effect.
In some preferred embodiments of the present invention, the cell 13 is a heterojunction solar cell. The light irradiated from the front surface of the photovoltaic module and penetrating through the cell 13 can further irradiate the aluminum foil layer 153 through the light-transmitting region 1512, and then be reflected back to the back surface of the cell 13 by the aluminum foil layer 153, so that the light utilization rate of the photovoltaic module can be improved. In the manufacturing process of the specific photovoltaic back plate, the reflectivity of one surface of the aluminum foil layer 153, which deviates from the PET layer, is not less than 90%.
In some embodiments of the present invention, referring to fig. 2, the photovoltaic backsheet further includes a first adhesive layer 1501 disposed between the PET layer 154 and the weather-resistant layer 155, a second adhesive layer 1502 disposed between the PET layer 154 and the aluminum foil layer 153, and a third adhesive layer 1503 disposed between the aluminum foil layer 153 and the fluorine-containing coating 152. Based on the arrangement of the first adhesive layer 1501, the second adhesive layer 1502 and the third adhesive layer 1503, the weather-resistant layer 155, the PET layer 154, the aluminum foil layer 153 and the fluorine-containing coating layer 152 are connected into a whole, and in a specific implementation process, the first adhesive layer 1501, the second adhesive layer 1502 and the third adhesive layer 1503 may be AHD glue or other types of adhesives.
In some embodiments of the present invention, the weather-resistant layer is made of PVF, PVDF, ETFE, or ECTFE.
In other embodiments of the present invention, the reflectivity of the gridding layer 151 is less than 10%. Preferably, the material of the mesh layer 151 is carbon black, that is, carbon black is disposed in the area where the mesh lines 1511 of the mesh layer 151 are located, and in a specific implementation, the carbon black may be attached to the upper surface of the fluorine-containing coating layer 152 by coating, or may be adhered and fixed to the upper surface of the fluorine-containing coating layer 152 by using an adhesive such as AHD glue.
In the present invention, the thickness of the photovoltaic back plate 15 ranges from 0.5 mm to 0.7 mm. Preferably, the PET layer has a thickness of 0.1 to 0.2mm, the weather-resistant layer has a thickness of 0.03 to 0.05mm, the aluminum foil layer has a thickness of 0.3 to 0.4mm, the fluorine-containing coating layer has a thickness of 0.02 to 0.03mm, and the mesh layer has a thickness of 0.02 to 0.025 mm.
In the photovoltaic back sheet 15 structure shown in fig. 2, the thicknesses of the first adhesive layer 1501, the second adhesive layer 1502 and the third adhesive layer 1503 are in the range of 0.01-0.02 mm.
In addition, as a preferred embodiment, the glass cover plate 11 according to the present invention is a tempered glass plated with an antireflection film. Therefore, the heterojunction photovoltaic module is ensured to have better mechanical strength, and simultaneously, sunlight can be better irradiated to the surface of the heterojunction solar cell piece, so that higher photoelectric conversion efficiency is realized.
For a photovoltaic module composed of a heterojunction solar cell, when ultraviolet light irradiates the heterojunction solar cell 13, the amorphous silicon layer is easily damaged, and the photoelectric conversion performance of the heterojunction solar cell 13 is further affected. Based on this, the glass cover plate 11 in the present invention is preferably ultraviolet cut glass; thus, most of the ultraviolet rays with the wave band below 350nm can be absorbed by the glass cover plate 11 and do not irradiate the surface of the heterojunction solar cell 13; more specifically, the transmittance of the glass cover plate 11 in the wavelength range of 350-1200 nm is greater than 90%, and the transmittance in the wavelength range of 290-350 nm is less than 30%.
In other embodiments of the present invention, the upper packaging film layer 12 may be a transparent film with a cut-off wavelength below 350 nm. At this time, the glass cover plate 11 may be provided as an ultraviolet cut glass which realizes ultraviolet light absorption together therewith, or may be provided as a general glass.
In the specific implementation process, the upper packaging adhesive film layer 12 is a transparent POE adhesive film or a transparent EVA adhesive film.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a photovoltaic backplate, includes the PET layer, its characterized in that, photovoltaic backplate still including set up in resistant time layer at the PET layer back and from supreme setting gradually in the positive aluminium foil layer in PET layer, fluorine-containing coating and meshing layer down.
2. The photovoltaic backsheet of claim 1, further comprising a first tie layer disposed between the PET layer and the weatherable layer, a second tie layer disposed between the PET layer and the aluminum foil layer, and a third tie layer disposed between the aluminum foil layer and the fluorine-containing coating.
3. The photovoltaic backsheet according to claim 1 or 2, wherein the weatherable layer is made of PVF, PVDF, ETFE or ECTFE.
4. The photovoltaic backsheet according to claim 1 or 2, wherein the reflectivity of the meshed layer is less than 10%.
5. The photovoltaic backsheet according to claim 4, wherein the material of the mesh layer is carbon black.
6. A photovoltaic backsheet according to claim 1 or 2, wherein the thickness of the photovoltaic backsheet is in the range of 0.5-0.7 mm.
7. The photovoltaic backsheet according to claim 6, wherein the PET layer has a thickness in the range of 0.1-0.2mm, the weatherable layer has a thickness in the range of 0.03-0.05mm, the aluminum foil layer has a thickness in the range of 0.3-0.4mm, the fluorine-containing coating layer has a thickness in the range of 0.02-0.03mm, and the meshing layer has a thickness in the range of 0.02-0.025 mm.
8. The photovoltaic backsheet of claim 2, wherein the first adhesive layer, the second adhesive layer, and the third adhesive layer have a thickness in the range of 0.01-0.02 mm.
9. A photovoltaic module comprises a glass cover plate, an upper packaging adhesive film layer, a battery piece and a lower packaging adhesive film layer from top to bottom in sequence, and is characterized in that the photovoltaic module further comprises a photovoltaic back plate which is arranged on the lower side of the lower packaging adhesive film layer and is as claimed in any one of claims 1 to 8, and grid lines of the gridding layer are arranged corresponding to peripheral blank areas of the battery piece.
10. The photovoltaic module of claim 9, wherein the cell is a heterojunction solar cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020559831.3U CN211605167U (en) | 2020-04-15 | 2020-04-15 | Photovoltaic backboard and photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020559831.3U CN211605167U (en) | 2020-04-15 | 2020-04-15 | Photovoltaic backboard and photovoltaic module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211605167U true CN211605167U (en) | 2020-09-29 |
Family
ID=72583842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020559831.3U Active CN211605167U (en) | 2020-04-15 | 2020-04-15 | Photovoltaic backboard and photovoltaic module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211605167U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114536906A (en) * | 2020-11-25 | 2022-05-27 | 杭州福斯特应用材料股份有限公司 | Power gain type black photovoltaic backboard |
-
2020
- 2020-04-15 CN CN202020559831.3U patent/CN211605167U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114536906A (en) * | 2020-11-25 | 2022-05-27 | 杭州福斯特应用材料股份有限公司 | Power gain type black photovoltaic backboard |
| CN114536906B (en) * | 2020-11-25 | 2024-03-26 | 杭州福斯特应用材料股份有限公司 | Power gain type black photovoltaic backboard |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201936904U (en) | Solar battery pack structure capable of improving efficiency of battery | |
| CN204538042U (en) | A kind of double-sided solar battery assembly | |
| CN211605167U (en) | Photovoltaic backboard and photovoltaic module | |
| CN101980373A (en) | Solar module laminated piece with aluminium plated back film | |
| TW201725744A (en) | High power solar cell module | |
| CN211480056U (en) | Heterojunction photovoltaic module | |
| JP4194457B2 (en) | Solar cell module | |
| CN212725330U (en) | Curved surface photovoltaic module | |
| CN213071151U (en) | Black solar photovoltaic module | |
| JP5340312B2 (en) | Photoelectric conversion module | |
| CN210156396U (en) | Solar module packaging structure | |
| CN210640260U (en) | Double-sided double-glass photovoltaic assembly | |
| CN210073875U (en) | Solar curtain wall assembly and solar curtain wall | |
| CN204243065U (en) | Photovoltaic module | |
| CN203589056U (en) | Double-faced solar photovoltaic assembly | |
| KR20120035294A (en) | Solar cell module | |
| CN201788989U (en) | Solar panel module laminated part with aluminum-coated back film | |
| CN220585240U (en) | Photovoltaic glass with double-sided power generation function | |
| CN211555905U (en) | Solar cell panel | |
| CN216902972U (en) | Single-face two-piece photovoltaic assembly | |
| CN211208460U (en) | Synergistic solar photovoltaic module | |
| CN218548450U (en) | Back packaging adhesive film for photovoltaic module and photovoltaic module with back packaging adhesive film | |
| CN218333818U (en) | Multilayer high reflection type sealing adhesive film | |
| CN220156484U (en) | High-efficient photovoltaic power generation module with light guide structure | |
| CN213905371U (en) | Novel semi-flexible solar cell panel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 199, deer mountain road, Suzhou high tech Zone, Jiangsu Province Patentee after: CSI Cells Co.,Ltd. Patentee after: Atlas sunshine Power Group Co.,Ltd. Patentee after: Changshu Artes Sunshine Power Technology Co.,Ltd. Address before: No. 199, deer mountain road, Suzhou high tech Zone, Jiangsu Province Patentee before: CSI Cells Co.,Ltd. Patentee before: CSI SOLAR POWER GROUP Co.,Ltd. Patentee before: Changshu Artes Sunshine Power Technology Co.,Ltd. |