CN215451425U - Half solar PV modules of MBB - Google Patents
Half solar PV modules of MBB Download PDFInfo
- Publication number
- CN215451425U CN215451425U CN202120221458.5U CN202120221458U CN215451425U CN 215451425 U CN215451425 U CN 215451425U CN 202120221458 U CN202120221458 U CN 202120221458U CN 215451425 U CN215451425 U CN 215451425U
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- piece
- battery piece
- mbb
- photovoltaic module
- adhesive film
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- 239000011521 glass Substances 0.000 claims abstract description 28
- 239000002313 adhesive film Substances 0.000 claims abstract description 24
- 238000003466 welding Methods 0.000 claims abstract description 8
- 229910000679 solder Inorganic materials 0.000 claims abstract description 5
- 239000012528 membrane Substances 0.000 claims description 10
- 229910000838 Al alloy Inorganic materials 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 6
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 229920006335 epoxy glue Polymers 0.000 claims 1
- 238000010248 power generation Methods 0.000 abstract description 13
- 230000003287 optical effect Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 6
- 238000010030 laminating Methods 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 238000002834 transmittance Methods 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
Landscapes
- Photovoltaic Devices (AREA)
Abstract
The utility model discloses an MBB half-piece solar photovoltaic module which comprises front glass, a first adhesive film layer, a cell piece string, a second adhesive film layer and a back plate, wherein the front glass, the first adhesive film layer, the cell piece string, the second adhesive film layer and the back plate are sequentially laminated from top to bottom, the cell piece string is formed by sequentially arranging and connecting a plurality of half-piece cell pieces in series, the half-piece cell pieces are welded by adopting a circular welding strip, a gap is arranged between every two adjacent half-piece cell pieces, and a gap is arranged between every two adjacent half-piece cell pieces. The utility model has the beneficial effects that: by adopting the battery piece with the half-piece structure, the filling factor FF is improved, the internal resistance is reduced, and the power generation capacity of the photovoltaic module is improved; the circular solder strip improves the optical utilization rate, keeps better IAM performance, is a guarantee that the MBB assembly improves the efficiency and keeps excellent power generation capacity, and the photovoltaic assembly is simple, convenient and quick to assemble, and reduces the assembly cost of the photovoltaic assembly.
Description
Technical Field
The utility model relates to the technical field of solar photovoltaic modules, in particular to an MBB half-piece solar photovoltaic module.
Background
In recent years, the global energy crisis and the environmental pollution are becoming more serious, and with the development of economy and the progress of society, the demand of people for new energy, especially clean and pollution-free renewable energy, is more urgent. Solar energy is a renewable clean energy source and becomes an object of attention, research and development of people. The photovoltaic power generation is a technology for directly converting solar energy into electric energy by utilizing a solar cell according to a photovoltaic effect principle, the solar cell is packaged and protected by a shell after being connected in series to form a large-area solar photovoltaic module, and then a power controller and other components are matched to form a photovoltaic power generation system. In order to reduce the electric loss of the battery piece, dense thin grid lines and thick main grid lines need to be printed on the battery piece, a multi-main-grid (MBB) technology is adopted, the width of the main grid lines is thinner and the distance between the main grid lines is narrower due to the multi-main-grid, the current transmission distance of the thin grid lines can be shortened, the surface shielding of the battery piece is reduced due to the multi-main-grid, the light receiving area is increased, the conduction distance of current on the thin grid lines is shortened, the series resistance of the assembly can be effectively reduced, and the resistance loss is reduced. Relevant data show that the conversion efficiency of the multi-main-grid technology at the battery end can be improved by about 0.2%, and the power of the component end can be improved by about 10W; the cost of electricity consumption can be reduced by about 1%. In addition, the multi-main-grid technology has higher tolerance on subfissure and broken grids, has better long-term reliability and ensures higher power generation capacity. The recent popular half chip technology is an effective way to reduce the package loss and increase the power of the components. Relevant experiments and experiments also show that the power of the half-piece assembly with the same efficiency is obviously improved compared with that of the whole assembly, and under the shielding of the same shadow, the special structural design of the half-piece assembly can reduce the power generation loss of the assembly in a power station, and the performance of the half-piece assembly is superior to that of the whole assembly. Therefore, the combination of the half-cell and the multi-main grid is a natural matter. On the premise of reducing cost efficiently, the half-piece solar photovoltaic module which does not increase excessive extra cost and can effectively improve output power becomes the key point of research.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an MBB half-sheet solar photovoltaic module to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a half solar PV modules of MBB, includes preceding glass, first glued membrane layer, battery piece cluster, second glued membrane layer and backplate, preceding glass, first glued membrane layer, battery piece cluster, second glued membrane layer and backplate from the top down stack gradually, the battery piece cluster is that a plurality of half battery pieces are arranged in order and are concatenated to form, and is a plurality of half battery pieces adopt circular solder strip welding, adjacent two be equipped with the clearance between the half battery piece, adjacent two be equipped with the clearance between the battery piece cluster, adjacent two clearance between the half battery piece is 1.8mm, adjacent two clearance between the battery piece cluster is 2 mm.
Preferably, the battery piece strings are twelve and divided into two rows, each row has six, and each battery piece string is provided with ten half battery pieces.
Preferably, the front glass is made of tempered coated glass, and the length and width of the front glass are the same as those of the back plate.
Further preferably, the side edges of the front glass and the back plate are provided with combined aluminum alloy frames, and polyurethane epoxy resin glue is arranged between the aluminum alloy frames and the front glass and between the aluminum alloy frames and the back plate.
Further preferably, the first adhesive film layer and the second adhesive film layer are both made of transparent EVA materials.
Preferably, the backboard is made of PET material, and the side edge of the backboard is provided with a sectional type junction box.
Has the advantages that: according to the MBB half-piece solar photovoltaic module, the battery piece with a half-piece structure is adopted, so that the filling factor FF can be improved, the internal resistance is reduced, the temperature of the MBB half-piece solar photovoltaic module during power generation is lower than that of a conventional module, and the power generation capacity of the MBB half-piece solar photovoltaic module is further improved; the circular solder strip improves the optical utilization rate, keeps better IAM performance, is a guarantee that the MBB assembly improves the efficiency and keeps excellent power generation capacity, is simple, convenient and quick to assemble, and reduces the assembly cost of the photovoltaic assembly.
Drawings
FIG. 1 is an exploded schematic view of an MBB half-wafer solar photovoltaic module disclosed in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an MBB half-wafer solar photovoltaic module disclosed in the embodiment of the present invention.
Reference numerals: 1-front glass, 2-first adhesive film layer, 3-battery piece string, 31-half battery piece, 4-second adhesive film layer and 5-back plate.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1-2, an MBB half-piece solar photovoltaic module comprises a front glass 1, a first adhesive film layer 2, a cell string 3, a second adhesive film layer 4 and a back plate 5, wherein the front glass 1, the first adhesive film layer 2, the cell string 3, the second adhesive film layer 4 and the back plate 5 are sequentially stacked from top to bottom, the cell string 3 is formed by sequentially arranging and serially connecting a plurality of half-piece cells 31, the half-piece cells 31 are welded by using circular solder strips, a gap is formed between every two adjacent half-piece cells 31, a gap is formed between every two adjacent half-piece cells 3, the gap between every two adjacent half-piece cells 31 is 1.8mm, and the gap between every two adjacent half-piece cells 3 is 2 mm.
In the application, each battery piece string 3 adopts a plurality of half battery pieces 31 which are connected in series and arranged in a long strip shape, and every two adjacent battery piece strings 3 are connected in parallel, so that the power generation loss of the assembly in a power station is reduced, the resistance loss is reduced, and the performance of the photovoltaic assembly is improved; meanwhile, the half-piece structure can increase the gaps among the cells, and finally the power of the photovoltaic module is improved. The battery piece cluster 3 has twelve and is divided into two rows, each row has six, and each battery piece cluster 3 is equipped with ten half battery pieces 31. The cell with the half-sheet structure can improve the fill factor FF, and meanwhile, the temperature of the photovoltaic module during power generation is lower than that of a conventional module due to the reduction of internal resistance, so that the power generation capacity of the photovoltaic module is further improved. The circular welding strip not only improves the optical utilization rate, but also keeps better IAM performance, and is a guarantee for improving the efficiency of the MBB assembly and keeping excellent power generation capacity.
Preferably, the front glass 1 is made of toughened coated glass, so that the impact strength and the structural strength of the front glass 1 are improved, the damage, corrosion and aging of natural disasters can be resisted, the light transmittance of the front glass 1 is further improved, the length and the width of the front glass 1 are the same as those of the back plate 5, and the photovoltaic module is convenient to frame after being laminated and assembled.
Preferably, the side edges of the front glass 1 and the back plate 5 are provided with combined aluminum alloy frames, and polyurethane epoxy resin glue is arranged between the aluminum alloy frames and the front glass 1 and between the aluminum alloy frames and the back plate 5, so that the aluminum alloy frame has the characteristics of cohesiveness, insulativity, weather resistance and the like, can prevent water, dust and impact, and is suitable for indoor and outdoor use.
Preferably, first glued membrane layer 2 and second glued membrane layer 4 all adopt transparent EVA material to make, and it has higher luminousness to and good thermosetting and viscidity, can play good guard action to the battery piece, improve this photovoltaic module's life.
Preferably, the back plate 5 is made of PET material, has electrical insulation performance, hydrolysis and aging resistance and tear resistance, and has good dimensional stability and water vapor transmission rate of less than 2 g/(m)2D); the side of backplate 5 is equipped with the sectional type terminal box, simplifies interconnecting link, has optimized photovoltaic module's inner circuit, guarantees that its resistance when working is minimum, is convenient for maintain the maintenance.
In this application, the equipment flow of half solar PV modules of MBB is:
1) welding half battery pieces 31 into a battery piece string 3, and welding every ten half battery pieces 31 into a battery piece string 3, wherein the welding surface temperature is 340 ℃, the series welding temperature is 210 ℃, and the soldering iron temperature is 375 ℃;
2) laying the first adhesive film layer 2 on the glass 1, wherein the first adhesive film layer 2 needs to be laid in the middle, and the first adhesive film layer 2 is guaranteed to be laid flat without folds;
3) typesetting twelve battery piece strings 3 on the first adhesive film layer 2 according to the mode of figure 2, and ensuring the accurate positioning of the battery piece strings 3;
4) laying the second adhesive film layer 4 on the battery piece string 3, wherein the second adhesive film layer 4 needs to be laid in the middle to ensure that the second adhesive film layer 4 is laid flat without folds, and then covering the back plate 5 on the second adhesive film layer 4;
5) and (3) vacuumizing and laminating the orderly laminated assembly (the front glass 1, the first adhesive film layer 2, the battery piece string 3, the second adhesive film layer 4 and the back plate 5), wherein the vacuumizing time is 300S, the laminating temperature is 340 ℃, and the laminating time/pressure is as follows: 10S/-65kpa, two stage lamination time/pressure: 5S/-45kpa, three stages of lamination time/pressure: 450S/-30 kpa;
6) and after the lamination is finished, framing the photovoltaic module, installing a junction box and finishing the assembly of the photovoltaic module.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall be included in the contents of the present invention within the scope of the protection of the present invention.
Claims (6)
1. The utility model provides a half solar PV modules of MBB, includes preceding glass (1), first glued membrane layer (2), battery piece cluster (3), second glued membrane layer (4) and backplate (5), preceding glass (1), first glued membrane layer (2), battery piece cluster (3), second glued membrane layer (4) and backplate (5) from the top down stack gradually its characterized in that: the battery piece cluster (3) is that a plurality of half battery pieces (31) are arranged in order and are concatenated to form, and is a plurality of half battery piece (31) adopt circular solder strip welding, adjacent two be equipped with the clearance between half battery piece (31), adjacent two be equipped with the clearance between battery piece cluster (3), adjacent two clearance between half battery piece (31) is 1.8mm, adjacent two clearance between battery piece cluster (3) is 2 mm.
2. The MBB half-sheet solar photovoltaic module of claim 1, wherein: twelve battery piece strings (3) are divided into two rows, each row has six, and each battery piece string (3) is provided with ten half battery pieces (31).
3. The MBB half-sheet solar photovoltaic module of claim 1, wherein: the front glass (1) is made of toughened coated glass, and the length and width of the front glass (1) are the same as those of the back plate (5).
4. The MBB half-sheet solar photovoltaic module of claim 1, wherein: the side of preceding glass (1) and backplate (5) is installed combination formula aluminum alloy frame, and this aluminum alloy frame all is equipped with polyurethane epoxy glue with preceding glass (1) and backplate (5) between two liang.
5. The MBB half-sheet solar photovoltaic module of claim 1, wherein: the first adhesive film layer (2) and the second adhesive film layer (4) are both made of transparent EVA materials.
6. The MBB half-sheet solar photovoltaic module of claim 1, wherein: the backboard (5) is made of PET materials, and a sectional type junction box is arranged on the side edge of the backboard (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120221458.5U CN215451425U (en) | 2021-01-27 | 2021-01-27 | Half solar PV modules of MBB |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120221458.5U CN215451425U (en) | 2021-01-27 | 2021-01-27 | Half solar PV modules of MBB |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215451425U true CN215451425U (en) | 2022-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120221458.5U Expired - Fee Related CN215451425U (en) | 2021-01-27 | 2021-01-27 | Half solar PV modules of MBB |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215451425U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113161437A (en) * | 2021-01-27 | 2021-07-23 | 江苏彩虹永能新能源有限公司 | Half solar PV modules of MBB |
-
2021
- 2021-01-27 CN CN202120221458.5U patent/CN215451425U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113161437A (en) * | 2021-01-27 | 2021-07-23 | 江苏彩虹永能新能源有限公司 | Half solar PV modules of MBB |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220107 |
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| CF01 | Termination of patent right due to non-payment of annual fee |