CN209822663U - Heat spot-resistant single-plate photovoltaic module - Google Patents
Heat spot-resistant single-plate photovoltaic module Download PDFInfo
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- CN209822663U CN209822663U CN201921133386.8U CN201921133386U CN209822663U CN 209822663 U CN209822663 U CN 209822663U CN 201921133386 U CN201921133386 U CN 201921133386U CN 209822663 U CN209822663 U CN 209822663U
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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
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Abstract
The utility model discloses a hot spot resistance single plate photovoltaic module, include: the device comprises a battery piece, a welding strip, a bus bar and a diode; the battery piece matrixes are connected through welding strips and bus bars to form a battery array; the battery pieces in the same row are connected in parallel through a welding strip, and the battery pieces in the same column are connected in series through the welding strip; the head end and the tail end of the battery array are connected through bus bars and used for collecting and leading out current; the diode is connected in parallel with the battery piece. The battery array is welded into a single plate by the welding strip, current is led out through the bus bar, and a plurality of diodes are arranged to be connected with the battery pieces in parallel to protect the battery pieces among the diodes; after shading, the diode performs bypass protection on the cell in the shading area, and the other cells of the cell array can normally generate electricity, so that the generating efficiency and the actual generating capacity of the photovoltaic module can be improved, the hot spot resistance of the photovoltaic module is improved, and the service life of the photovoltaic module is prolonged.
Description
Technical Field
The utility model relates to a solar module technical field especially relates to a hot spot resistance single plate photovoltaic module.
Background
With the rising of energy prices, the development and utilization of new energy is a major subject of research in the energy field today. Because solar energy has the advantages of no pollution, no regional limitation, inexhaustible energy and the like, the research on solar power generation becomes a main direction for developing and utilizing new energy. The solar cell is a main mode for using solar energy by people at present, the high conversion efficiency of the module is promoted, the manufacturing cost of the module is continuously reduced, and the performance of the module is promoted, which is a necessary trend in the development of the industry.
The conventional laminated photovoltaic module is a mainstream product with high module conversion efficiency, the series connection mode of the battery pieces is divided into a welding strip mode and a conductive adhesive mode, the conductive adhesive has high resistance and high technical requirements, and the laminated photovoltaic module is low in production yield and inconvenient in product maintenance due to high material cost; the laminated photovoltaic module is high in price, and the laminated module adopts a transverse connection mode, so that once a battery piece generates transverse cracks, the whole string of batteries or even the whole photovoltaic module cannot generate electricity, the hot spot resistance of the photovoltaic module is poor, and the photovoltaic module is easy to burn.
The existing MWT and IBC photovoltaic modules are connected in a circuit mode of laying copper foil on the back, the process is complex, the problem of circuit short circuit is easy to occur, the production yield is low, the using amount of connecting materials is large, the cost is high, and the cost performance is low.
The conventional laminated photovoltaic module adopts 1/5 battery plates, 1/5 battery plates can only adopt a horizontal arrangement mode and cannot adopt vertical installation, and the horizontal installation mode has higher processing cost and increases the cost of the photovoltaic module.
Conventional lamination subassembly adopts 1 or 2 diodes to do the protection to photovoltaic module, according to the reverse leakage current's of battery piece characteristic, 20 battery pieces of protection reach the best effect at most for a diode, because lamination photovoltaic module's battery piece is smaller, the battery piece quantity of establishing ties is more, it is still far away not enough to only adopt 1 to 2 diodes to protect photovoltaic module, take place behind the phenomenon of hiding, photovoltaic module's diode does not work, conversion efficiency has not only been reduced, still can lead to monoblock photovoltaic module to generate heat, reduce photovoltaic module's life.
Aiming at the fact that the number of the solar cell plates and the solar cell module in the patent number ZL201621351622 is large in the actual manufacturing process, the diodes are troublesome to process, 2 plates are required to be connected in series to form a circuit, a plurality of processes are required for manufacturing the whole solar cell module, the whole solar cell module comprises typesetting, fixing the plates, connecting the plate circuits and the like, and the automatic capacity of the manufacturing process is still to be further improved.
Disclosure of Invention
The utility model aims at providing a hot spot resistance single plate photovoltaic module, include: the device comprises a battery piece, a welding strip, a bus bar and a diode;
a plurality of battery pieces are arranged in a matrix and connected through the welding strips and the bus bars to form a battery array; the battery pieces in the same row are connected in parallel through one welding strip, and the battery pieces in the same column are connected in series through the welding strip; the head end and the tail end of the battery array are connected through one bus bar and used for collecting and leading out current;
the diode is connected in parallel with the battery piece.
Preferably, the diodes are located between the solder strips and the solder strips of adjacent rows and between the bus bars and the solder strips.
Preferably, the diodes are positioned between the solder strips and between the bus bars and the solder strips at intervals of N rows, wherein N is a natural number greater than or equal to 1.
Preferably, the hot spot resistant single-plate photovoltaic module further comprises a junction box, the diode is arranged in the junction box, and the solder strip and the bus bar extend outwards to be connected with the diode in the junction box.
Preferably, the cell is a crystalline silicon cell.
Preferably, the crystalline silicon cell piece is any one of a back electrode contact IBC crystalline silicon solar cell piece, a metal perforated wound MWT crystalline silicon solar cell piece, a solar cell piece with main grid lines on the front and back surfaces, or a laminated solar cell piece.
Preferably, the battery piece is a split battery piece, and the split battery piece is formed after the battery piece is cut into 1/2-1/12.
According to the utility model provides a concrete embodiment, the utility model discloses a following technological effect:
the utility model discloses battery array among hot spot resistance monoblock photovoltaic module adopts the design of veneer piece, connects in parallel through the solder strip between the battery piece of the same line, connects in series through the solder strip between the battery piece of the same row, and then draws current through the busbar to set up a plurality of diodes and connect in parallel with the battery piece, protect the battery piece between the diode; after shading, the diode can easily respond to perform bypass protection on the cell in the shaded area, and most of the cells can normally generate electricity, so that the generating efficiency and the actual generating capacity of the photovoltaic module can be improved, the hot spot resistance of the photovoltaic module is improved, and the service life of the photovoltaic module is prolonged; meanwhile, the manufacturing process is simplified, and the method is suitable for the development requirement of high automation.
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 embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic circuit diagram of a hot spot resistant single-plate photovoltaic module according to the present invention;
fig. 2 is a schematic structural diagram of a hot spot resistant single-plate photovoltaic module according to the present invention;
fig. 3 is a schematic structural diagram of a hot spot resistant single-plate photovoltaic module according to the present invention;
fig. 4 is a schematic view of a welding mode of a cell and a welding strip of the hot spot resistant single-plate photovoltaic module according to the present invention;
fig. 5 is a first perspective view of a battery array welding mode of the hot spot resistant single-plate photovoltaic module according to the present invention;
fig. 6 is a schematic diagram of a welding mode of a cell and a welding strip of the hot spot resistant single-plate photovoltaic module according to the present invention;
FIG. 7 is a perspective view of a battery array welding mode of the hot spot resistant single-plate photovoltaic module of the present invention;
description of the symbols: 1-cell, 2-solder strip, 3-bus bar, 4-diode.
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.
The utility model aims at providing a photovoltaic module that hot spot resistance is strong.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1, the hot spot resistant single-plate photovoltaic module of the present invention comprises a battery plate 1, a solder strip 2, a bus bar 3 and a diode 4;
a plurality of battery pieces 1 are arranged in a matrix and connected through the welding strips 2 and the bus bars 3 to form a battery array; the battery pieces 1 in the same row are connected in parallel through one welding strip 2, and the battery pieces 1 in the same column are connected in series through the welding strips 2; the head end and the tail end of the battery array are connected through one bus bar 3 and used for collecting and leading out current; the diode 4 is connected in parallel with the battery cell 1.
The hot spot resistant single-plate photovoltaic module further comprises a junction box, the diode 4 is arranged in the junction box, and the welding strip 2 and the bus bar 3 extend outwards to be connected with the diode 4 in the junction box.
The diode 4 has two connection modes: one-row protection, the diodes 4 are connected in parallel between the positive and negative electrodes of the single-row battery pieces 1 through the solder strips 2 or the bus bars 3 (as shown in fig. 2) so as to realize the maximum protection of the photovoltaic module; and secondly, protecting multiple rows, wherein the diodes 4 are connected in parallel between the positive and negative electrodes of the multiple rows of the battery pieces 1 through the welding strips 2 or the bus bars 3, so that the cost of the photovoltaic module can be reduced. In the present embodiment, the diodes 4 are connected in parallel between the positive and negative electrodes of the three rows of the battery sheets 1 through the solder ribbons 2 or the bus bars 3 (as shown in fig. 3).
The solar cell piece 1 is a crystalline silicon cell piece, and the crystalline silicon cell piece is any one of an IBC (indirect Back Contact) silicon solar cell piece, an MWT (metal Wrap through) silicon solar cell piece, a solar cell piece with main grid lines on the front and Back surfaces or a laminated solar cell piece; when the crystalline silicon cell is an IBC silicon solar cell or an MWT silicon solar cell, the cell 1 and the solder strip 2 are connected in a lamination manner, that is, the solder strip 2 is placed in front of the back surface of the lower end of the cell 1, the solder strip 2 is placed in front of the solder strip 2, and the solder strip 2 is placed in back of the upper end of the cell 1, and the front surface of the upper end of the cell 1 is connected in a lamination manner, as shown in fig. 4 and 5; when the crystalline silicon cell is a laminated solar cell, the cell 1 and the solder strip 2 are connected in parallel, as shown in fig. 6 and 7.
The cell piece 1 is a split cell piece, and the crystalline silicon cell piece is formed after being split into 1/2-1/12; the battery piece adopts any one of 1/2, 1/3, 1/4, 1/5, 1/6, 1/7, 1/8, 1/9, 1/10, 1/11 or 1/12 pieces.
The hot spot resistant single-plate photovoltaic module further comprises a first protective layer, a second protective layer and a film layer;
the first protective layer is positioned on one side of the battery array;
the second protective layer is positioned on the other corresponding surface of the battery array;
the battery array with first protective layer with all be provided with between the battery array with the second protective layer the glued membrane layer, the glued membrane layer is used for with battery array, first protective layer and second protective layer connect into an entirety.
The diode 4 may be installed within the junction box and may be further interposed between the first protective layer and the second protective layer.
The first protective layer is located on the light irradiation surface of the battery array, is of a plate structure and is made of glass materials or transparent organic composite materials, and is used for increasing structural strength, improving load resistance and subfissure resistance and preventing foreign matters on the front side from impacting on the component; the second protective layer is located on the back of the light irradiation surface of the battery array, the second protective layer is of a plate structure, and the first protective layer is made of a material or made of PET (Polyethylene Terephthalate) or a composite material or glass containing PET, so that the load resistance and the hidden crack resistance are improved.
The adhesive film layer is any one of EVA (Ethylene Vinyl Acetate), POE (Polyolefin Elastomer), PVB (Polyvinyl Butyral), or silicone.
The hot spot resistant single-plate photovoltaic module further comprises: the frame is used for wrapping the four sides of the whole formed by connecting the battery array, the first protection layer, the second protection layer and the adhesive film layer, and preventing the four sides of the whole formed by connecting the battery array, the first protection layer, the second protection layer and the adhesive film layer from being damaged by external force.
The utility model discloses hot spot resistance monoblock photovoltaic module's circuit structure is simple, adopts the monoblock design, welds the area and runs through whole battery array, will go with capable battery piece parallel connection. The battery pieces in the same column are connected in series, and are protected by a plurality of diodes; the conventional string or a plurality of plate typesetting is eliminated, the fixed adhesive tape between strings/plates is eliminated, the requirement of the bus bar on the separate welding process is eliminated, the materials of the welding tape and the bus bar are reduced, the simplest manufacturing process and flow are realized, and the automatic manufacturing can be realized; meanwhile, the number and the positions of the diodes can be flexibly selected according to the type, the size and the number of the battery pieces so as to meet the requirement of the hot spot resistance of the photovoltaic module under different conditions.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principle and the implementation mode of the invention are explained by applying a specific example; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (7)
1. A hot-spot resistant monolithic photovoltaic module, comprising: the device comprises a battery piece, a welding strip, a bus bar and a diode;
a plurality of battery pieces are arranged in a matrix and connected through the welding strips and the bus bars to form a battery array; the battery pieces in the same row are connected in parallel through one welding strip, and the battery pieces in the same column are connected in series through the welding strip; the head end and the tail end of the battery array are connected through one bus bar and used for collecting and leading out current;
the diode is connected in parallel with the battery piece.
2. A hot-spot resistant monolithic photovoltaic module as claimed in claim 1, wherein said diodes are located between said solder ribbon and said solder ribbon of adjacent rows and between said bus bar and said solder ribbon.
3. The hot spot resistant monolithic photovoltaic module of claim 1, wherein said diodes are positioned between said solder strips and between said bus bars and said solder strips in spaced N rows, N being a natural number greater than or equal to 1.
4. The hot spot resistant monolithic photovoltaic module of claim 1 further comprising a junction box, said diodes being disposed in said junction box, said solder strips and said bus bars extending outwardly to connect said diodes in said junction box.
5. The hot spot resistant monolithic photovoltaic module of claim 1, wherein said cell is a crystalline silicon cell.
6. The hot spot resistant single-plate photovoltaic module according to claim 5, wherein the crystalline silicon cell is any one of a back electrode contact IBC crystalline silicon solar cell, a Metal Wrap Through (MWT) crystalline silicon solar cell, a solar cell with main grid lines on both front and back sides, or a laminated solar cell.
7. The hot spot resistant monolithic photovoltaic module of claim 1, wherein said cell sheet is a segmented cell sheet, and said segmented cell sheet is formed after said cell sheet is cut into 1/2-1/12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921133386.8U CN209822663U (en) | 2019-07-18 | 2019-07-18 | Heat spot-resistant single-plate photovoltaic module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921133386.8U CN209822663U (en) | 2019-07-18 | 2019-07-18 | Heat spot-resistant single-plate photovoltaic module |
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| CN209822663U true CN209822663U (en) | 2019-12-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110212051A (en) * | 2019-07-18 | 2019-09-06 | 无锡鼎森茂科技有限公司 | A kind of heat resistanceheat resistant spot veneer block photovoltaic module |
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2019
- 2019-07-18 CN CN201921133386.8U patent/CN209822663U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110212051A (en) * | 2019-07-18 | 2019-09-06 | 无锡鼎森茂科技有限公司 | A kind of heat resistanceheat resistant spot veneer block photovoltaic module |
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