CN212161829U - Erosion-resistant photovoltaic module - Google Patents
Erosion-resistant photovoltaic module Download PDFInfo
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- CN212161829U CN212161829U CN202020911980.1U CN202020911980U CN212161829U CN 212161829 U CN212161829 U CN 212161829U CN 202020911980 U CN202020911980 U CN 202020911980U CN 212161829 U CN212161829 U CN 212161829U
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- protection
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- erosion
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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 prevent eroding photovoltaic module, include: a first protection member, a solar cell, a second protection member and a support member; the first guard has a light transmissive property; the second protection part is arranged below the first protection part; the support piece is arranged between the first protection piece and the second protection piece, and the first protection piece, the second protection piece and the support piece enclose a sealed cavity; the solar cell is arranged in the sealed cavity. The photovoltaic module can isolate the solar cell from the external environment, improve the power generation performance of the photovoltaic module and prolong the service life of the photovoltaic module.
Description
Technical Field
The utility model relates to a solar module technical field, in particular to prevent corroding photovoltaic module.
Background
Photovoltaic modules, as a clean energy application product directly utilizing solar energy, have been increasingly widely used in various scenes, and in some common photovoltaic modules, solar cells of the photovoltaic modules are in contact with the outside and are easily eroded by the outside environment, so that the power generation performance of the photovoltaic modules is reduced and the service life of the photovoltaic modules is shortened.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a prevent eroding photovoltaic module can make solar cell and external environment isolated, improves photovoltaic module's power generation performance.
According to the utility model discloses prevent corroding photovoltaic module, include: a first protection member, a solar cell, a second protection member and a support member; the first guard has a light transmissive property; the second protection part is arranged below the first protection part; the support piece is arranged between the first protection piece and the second protection piece, and the first protection piece, the second protection piece and the support piece enclose a sealed cavity; the solar cell is arranged in the sealed cavity.
According to the utility model discloses anti-corrosion photovoltaic module has following beneficial effect at least: in solar cell located confined space, completely with external isolated, avoid being corroded by external environment, be difficult for by external environment and external stress influence, improved the protection to solar cell, improve photovoltaic module's generating performance and increase its life, first protection piece has the light transmissivity, on the sunlight can pass first protection piece reachs solar cell to, solar cell can be with light energy transformation for the electric energy and export.
According to some embodiments of the present invention, the solar cell further comprises a sealing gasket, the solar cell is disposed at the bottom of the first protection member, the second protection member has an empty space between the solar cell, the sealing gasket is disposed at the empty space, the upper end surface of the sealing gasket is connected with the bottom surface of the solar cell, and the sealing gasket is connected with the top surface of the second protection member. The heat conductivity coefficient of the isolated space gap is small, and the solar cell has good sound insulation, heat insulation and heat preservation performances, so that the solar cell is not easily influenced by mechanical vibration caused by external temperature change and external sound, and the efficiency of the solar cell is improved; through setting up seal ring, guaranteed that connecting wire can pass seal ring and solar cell and be connected, do not influence the leakproofness of sealed cavity.
According to some embodiments of the utility model, support piece includes sealing glue layer and interval frame, the sealing glue layer lay in the lateral surface of interval frame, the top surface of sealing glue layer with first protection piece is connected, the bottom surface of sealing glue layer with second protection piece is connected. The spacing frame is used for supporting the first protection piece and the second protection piece to form a basic frame for maintaining a sealed cavity, and the sealing glue layer is filled in grooves formed on the outer side surfaces of the first protection piece, the second protection piece and the spacing frame to guarantee the sealing effect of the sealed cavity.
According to some embodiments of the utility model, the up end of interval frame with the sealing layer has been laid to the lower terminal surface of interval frame. The sealing layer can further improve the sealing performance of the sealed cavity on one hand, and can play a good fixing effect on the spacing frame on the other hand, so that the first protection piece, the second protection piece and the spacing frame are convenient to assemble.
According to some embodiments of the utility model, be equipped with the drier in the spacer frame, the spacer frame inner space with sealed cavity intercommunication. Through setting up the drier, carry out the drying to the gas in the sealed cavity, avoid because of the inside and outside difference in temperature of sealed cavity is too big arouse the frosting and the dewfall of sealed cavity inside, protection solar cell avoids frosting and the influence of dewfall.
According to the utility model discloses a some embodiments, solar cell is top lining type thin film battery chip, top lining type thin film battery chip includes from the last transparent support front sheet layer, transparent conducting layer, solar light absorption layer and the metal conducting layer down consecutive, the bottom of metal conducting layer is equipped with the backplate inoxidizing coating. The backplate inoxidizing coating can provide good protection to the metal conducting layer, and the backplate inoxidizing coating has insulating nature simultaneously, avoids battery chip and other metal parts mistake to touch and the short circuit.
According to some embodiments of the invention, a first encapsulation glue film layer is provided between the first protection element and the solar cell; and a second packaging adhesive film layer is arranged between the back plate protective layer and the solar cell. Through setting up first encapsulation glued membrane layer, can play good bonding and fixed to solar cell, make solar cell be difficult for and the separation of first protection piece, the same reason, the second encapsulates the glued membrane layer and carries out the bonding that stabilizes fixedly to backplate inoxidizing coating and solar cell, makes the backplate inoxidizing coating effectively protect solar cell.
According to the utility model discloses a some embodiments still include the terminal box, the terminal box with solar cell electricity is connected, and the terminal box is favorable to solar cell to be connected with other equipment, has made things convenient for solar cell to carry out effective power supply to equipment, the terminal box is located the bottom of second protection piece or support piece's lateral surface is favorable to hiding and installs the terminal box, avoids the terminal box to shelter from the sunlight and shines in the solar cell.
According to some embodiments of the utility model, solar cell is end liner type thin film battery chip, end liner type thin film battery chip includes from the last transparent conducting layer, the solar light absorption layer, metallic conductor layer and the bottom plate layer down consecutive. The metal conducting layer is positioned in the middle of the bottom lining type thin film battery chip, and a back plate protective layer does not need to be additionally bonded for protection, so that the assembling materials of the photovoltaic module are reduced.
According to some embodiments of the present invention, the sealed cavity is filled with a gas selected from the group consisting of dry air, argon, krypton, and sulfur hexafluoride. Dry air is filled in the sealed cavity, so that frosting and dewing of components in the sealed cavity can be effectively avoided; or inert gas such as argon and krypton is filled in the sealed cavity, so that the parts in the sealed cavity can be effectively prevented from being oxidized and corroded, and the service life of the photovoltaic module is prolonged; and moreover, sulfur hexafluoride gas is filled in the sealed cavity, so that the electrical insulation degree of the sealed cavity is improved, the safety of the photovoltaic module is improved, the sulfur hexafluoride gas has a good cooling effect, the solar cell can be effectively cooled, and the cell is prevented from being overheated.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic view of an anti-erosion photovoltaic module according to an embodiment of the present invention;
fig. 2 is a schematic view of an anti-erosion photovoltaic module according to another embodiment of the present invention.
Reference numerals:
the solar cell module comprises a first protection part 100, a second protection part 200, a support 300, a spacer frame 310, a sealant 320, a solar cell 400, a junction box 500, a sealing cavity 600, a first packaging adhesive film layer 710, a second packaging adhesive film layer 720, a backboard protection layer 730 and a sealing gasket 740.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper and lower directions, is the orientation or positional relationship shown on the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore should not be construed as limiting the present invention.
In the description of the present invention, if there are first and second descriptions for distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
As shown in fig. 1 and fig. 2, according to the utility model discloses prevent erosion photovoltaic module, include: the first prevention piece 100, the solar cell 400, the second prevention piece 200, and the support 300; the first prevention piece 100 has light transmittance; the second protection part 200 is arranged below the first protection part 100; the supporting member 300 is disposed between the first protection member 100 and the second protection member 200, and the first protection member 100, the second protection member 200 and the supporting member 300 enclose a sealed cavity 600; the solar cell 400 is disposed in the sealed cavity 600.
Specifically, the solar cell 400 is disposed in the sealed space, completely isolated from the outside, prevented from being corroded by the outside environment, and not easily affected by the outside environment and the outside stress, so that the protection of the solar cell 400 is improved, the power generation performance of the photovoltaic module is improved, and the service life of the photovoltaic module is prolonged, the first protection element 100 has a light transmittance, and solar light can pass through the first protection element 100 and reach the solar cell 400, so that the solar cell 400 can convert the light energy into electric energy to be output. The first protection component 100 and the second protection component 200 may be formed in a flat plate shape, and each of the first protection component 100 and the second protection component 200 may be a common protection glass, such as tempered glass or semi-tempered glass, or may be a laminated glass formed by bonding two pieces of glass, and the laminated glass is processed by a processing method common in the glass industry, such as coating, color glazing, acid etching, sand blasting, screen printing, digital jet printing, and the like, so as to have various colors and pattern effects.
In some embodiments of the present invention, as shown in fig. 1 and 2, a sealing gasket 740 is further included, the solar cell 400 is disposed at the bottom of the first protection part 100, an empty space is provided between the second protection part 200 and the solar cell 400, the sealing gasket 740 is disposed at the empty space, an upper end surface of the sealing gasket 740 is connected to a bottom surface of the solar cell 400, and the sealing gasket 740 is connected to a top surface of the second protection part 200. The heat conductivity coefficient of the isolated space gap is small, and the solar cell 400 has good sound insulation, heat insulation and heat preservation performance, is not easily influenced by mechanical vibration caused by external temperature change and external sound, and improves the efficiency of the solar cell 400; by arranging the sealing gasket 740, it is ensured that the connecting wires can penetrate through the sealing gasket 740 to be electrically connected with the solar cell 400 without affecting the sealing performance of the sealing cavity 600; in practical applications, in order to electrically connect the solar cell 400 to a connection device, a connection wire is disposed between the solar cell 400 and the connection device, one end of the connection wire is connected to an electrode of the solar cell 400, and the other end of the connection wire extends out of the external environment through the sealing gasket 740, so that the connection wire can be electrically connected to other connection devices conveniently.
It is easily conceived that, in some embodiments, the solar cell 400 may also be clamped and fixed by the first protection member 100 and the second protection member 200 simultaneously, so as to increase the stability of fixing the solar cell 400.
In some embodiments of the present invention, as shown in fig. 1 and 2, the supporting member 300 includes a sealant layer 320 and a spacer frame 310, the sealant layer 320 is disposed on an outer side surface of the spacer frame 310, a top surface of the sealant layer 320 is connected to the first protection member 100, and a bottom surface of the sealant layer 320 is connected to the second protection member 200. The spacer frame 310 is used for supporting the first protection part 100 and the second protection part 200 to form a basic frame for maintaining the sealed cavity 600, and the sealant layer 320 fills the grooves formed on the outer sides of the first protection part 100, the second protection part 200 and the spacer frame 310, thereby ensuring the sealing effect of the sealed cavity 600. Specifically, the partition frame 310 may be a frame structure surrounded by a plurality of partition bars, and the partition bars may be aluminum partition bars, stainless steel partition bars, composite metal partition bars, and the like, and have excellent structural strength and corrosion resistance, and perform a good supporting function on the first protection part 100 and the second protection part 200; the sealant layer 320 can be an elastic sealant layer 320 such as polysulfide glue or silicone structural glue, which is easy to deform and convenient to lay.
In some embodiments of the present invention, a sealing layer is disposed on the upper end surface of the spacing frame 310 and the lower end surface of the spacing frame 310. The sealing layer may further improve the sealing performance of the sealed cavity 600, and may also provide a good fixing effect for the spacer frame 310, thereby facilitating the assembly of the first protection part 100, the second protection part 200, and the spacer frame 310. Specifically, the sealing layer may be butyl hot melt adhesive, and is conveniently laid on the upper and lower end surfaces of the spacer frame 310, and is adhesively fixed with the first protection member 100 and the second protection member 200.
In some embodiments of the present invention, a desiccant is disposed in the spacer frame 310, and the space in the spacer frame 310 is communicated with the sealed cavity 600. Through setting up the drier, carry out the drying to the gas in the sealed cavity 600, avoid causing frosting and the dewfall of sealed cavity 600 inside because of the inside and outside difference in temperature of sealed cavity 600 is too big, protect solar cell 400 to avoid frosting and the influence of dewfall. Specifically, the drying agent may be a 3A molecular sieve or silica gel, the spacer frame 310 has an accommodating cavity therein, the drying agent is filled in the accommodating cavity, a through hole matched with the accommodating cavity is formed in the inner side surface of the spacer frame 310, and the diameter of the through hole is smaller than the diameter of a single particle of the drying agent, so that the drying agent is prevented from falling out of the through hole, and the drying agent can effectively dry the gas in the sealed cavity 600.
In some embodiments of the present invention, the solar cell may be a monocrystalline silicon cell, a polycrystalline silicon cell chip, or a thin film cell chip.
Further, in some embodiments of the present invention, the solar cell 400 is a top-lining thin film cell chip, the top-lining thin film cell chip includes a transparent supporting front plate layer, a transparent conductive layer, a solar light absorption layer and a metal conductive layer which are sequentially connected from top to bottom, and the bottom of the metal conductive layer is provided with a back plate protective layer 730. The backplate inoxidizing coating 730 can provide good protection to the metal conducting layer, and the backplate inoxidizing coating has insulating nature simultaneously, avoids battery chip and other metal parts mistake to touch and the short circuit. Specifically, the thin film battery chip may be classified into a top-liner type and a bottom-liner type according to the incident direction, wherein sunlight enters the solar light absorption layer from the transparent supporting front plate layer to generate a photovoltaic effect, and the generated current is output from the bottom metal conductive layer, so that the bottom metal conductive layer needs to be protected by a back plate protection layer 730.
In some embodiments of the present invention, as shown in fig. 2, the solar cell 400 can also be a substrate-type thin film cell chip, the substrate-type thin film cell chip includes a transparent conductive layer, a solar light absorption layer, a metal conductive layer and a substrate layer which are sequentially connected from top to bottom, in practical applications, sunlight enters the solar light absorption layer from the transparent conductive layer to release the photovoltaic effect, the generated current is output from the metal conductive layer, the metal conductive layer is located in the middle of the substrate-type thin film cell chip, no additional back plate protective layer is needed to be bonded for protection, and the assembling material of the photovoltaic module is reduced.
Additionally, in some embodiments, the thin film battery may also be made of one or more stacked layers of cadmium telluride thin film, copper indium gallium selenide thin film, silicon based thin film, perovskite thin film, and the like.
In some embodiments of the present invention, as shown in fig. 1, a first encapsulation adhesive layer 710 is disposed between the first protection component 100 and the solar cell 400; a second encapsulation adhesive film layer 720 is disposed between the back-sheet protective layer 730 and the solar cell 400. Through setting up first encapsulation glued membrane layer 710, can play good bonding and fixed to solar cell 400, make solar cell 400 be difficult for separating with first protection piece 100, and in a similar way, second encapsulation glued membrane layer 720 carries out firm bonding fixedly to backplate inoxidizing coating 730 and solar cell 400, makes backplate inoxidizing coating 730 can effectively protect solar cell 400.
Specifically, the packaging adhesive film can be made of high polymer materials such as EVA ethylene-vinyl acetate copolymer, PVB polyvinyl butyral, SGP (ionic film), POE ethylene-alpha-olefin copolymer and the like; the backsheet protective layer 730 may be a backsheet material commonly used in the photovoltaic industry, such as TPT, TPE, KPE, FPF, KPF, PPE, and the like, and optionally, the backsheet protective layer 730 may further use UV glue, protective paint, PET film with adhesive, PVC film, and the like, so thatWith these materials, the second encapsulation adhesive film layer 720 is no longer required; in addition, the packaging adhesive film 710/720 can bond two materials together, and has an insulating function, and the volume resistivity of the packaging adhesive film is generally required to be more than 1 × 1014Omega cm; it is contemplated that in some embodiments, the solar cell 400 may be further fixed to the first protection member 100 by screwing or the like, thereby facilitating disassembly and maintenance.
In some embodiments of the present invention, the solar cell protection device further includes a junction box 500, the junction box 500 is electrically connected to the solar cell 400, the junction box is favorable for connecting the solar cell to other devices, so as to facilitate the solar cell to effectively supply power to the devices, the junction box 500 is disposed at the bottom of the second protection member 200 or at the outer side surface of the support member 300, so as to be favorable for hiding and installing the junction box 500, and prevent the junction box 500 from blocking sunlight to irradiate the solar cell 400; specifically, the junction box 500 may be fixed to the bottom surface of the second protection member 200 or the outer side of the support member 300 by means of silicon adhesive, or may be detachably fixed to the bottom surface of the second protection member 200 or the outer side of the support member 300 by means of screw threads or the like.
Further, in some embodiments, as shown in fig. 1, the terminal block 500 is disposed on the bottom surface of the second protection element 200, a sealing gasket 740 is disposed in the gap, an upper end surface of the sealing gasket 740 is connected to the backplate protection layer 730, and a lower end surface of the sealing gasket 740 is connected to the second protection element 200. By providing the sealing gasket 740, it is ensured that the connection wires of the junction box 500 can pass through the sealing gasket 740 to be electrically connected with the solar cell 400, without affecting the sealing performance of the sealing cavity 600. In other embodiments, as shown in fig. 2, the junction box 500 may also be disposed on an outer side surface of the support 300, and a connection channel is opened on the support 300, so that a connection wire extends into the connection channel and is connected to the solar cell 400, thereby electrically connecting the solar cell 400 and the junction box 500.
According to some embodiments of the present invention, the sealed cavity 600 is filled with one of dry air, argon, krypton, and sulfur hexafluoride gases. Dry air is filled in the sealed cavity 600, so that frosting and dewing of components in the sealed cavity 600 can be effectively avoided; or inert gas such as argon and krypton is filled in the sealed cavity 600, so that the components in the sealed cavity 600 can be effectively prevented from being oxidized and corroded, and the service life of the photovoltaic module is prolonged; and then or through filling sulfur hexafluoride gas in the sealed cavity 600, the electrical insulation degree of the sealed cavity 600 is improved, so that the safety of the photovoltaic module is improved, and the sulfur hexafluoride gas has a good cooling effect, so that the solar cell 400 can be effectively cooled, and the cell is prevented from being overheated.
The present embodiment has been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the present invention.
Claims (10)
1. An erosion resistant photovoltaic module, comprising:
a first guard (100), the first guard (100) being arranged to be light permeable;
a second protection member (200), the second protection member (200) being provided below the first protection member (100);
a support (300), the support (300) being disposed between the first guard (100) and the second guard (200), the first guard (100), the second guard (200), and the support (300) enclosing a sealed cavity (600);
a solar cell (400), the solar cell (400) being disposed within the sealed cavity (600).
2. Erosion protected photovoltaic module according to claim 1,
the solar cell protection device is characterized by further comprising a sealing gasket (740), the solar cell (400) is arranged at the bottom of the first protection part (100), an empty space is formed between the second protection part (200) and the solar cell (400), the sealing gasket (740) is arranged in the empty space, the upper end face of the sealing gasket (740) is connected with the bottom face of the solar cell (400), and the sealing gasket (740) is connected with the top face of the second protection part (200).
3. Erosion protected photovoltaic module according to claim 1,
the supporting piece (300) comprises a sealing adhesive layer (320) and a spacing frame (310), wherein the sealing adhesive layer (320) is laid on the outer side face of the spacing frame (310), the top face of the sealing adhesive layer (320) is connected with the first protection piece (100), and the bottom face of the sealing adhesive layer (320) is connected with the second protection piece (200).
4. Erosion protected photovoltaic module according to claim 3,
and sealing layers are laid on the upper end surface of the spacing frame (310) and the lower end surface of the spacing frame (310).
5. Erosion protected photovoltaic module according to claim 3,
the space in the interval frame (310) is communicated with the sealed cavity (600).
6. Erosion protected photovoltaic module according to claim 2,
the solar cell (400) is a top-lining type thin-film cell chip, the top-lining type thin-film cell chip comprises a transparent supporting front plate layer, a transparent conducting layer, a solar light absorption layer and a metal conducting layer which are sequentially connected from top to bottom, and a backboard protective layer (730) is arranged at the bottom of the metal conducting layer.
7. Erosion protected photovoltaic module according to claim 6,
a first packaging adhesive film layer (710) is arranged between the first protection piece (100) and the solar cell (400);
and a second packaging adhesive film layer (720) is arranged between the back plate protective layer (730) and the solar cell (400).
8. Erosion-resistant photovoltaic module according to claim 1 or 2,
the solar protection device further comprises a junction box (500), wherein the junction box (500) is electrically connected with the solar cell (400), and the junction box (500) is arranged at the bottom of the second protection piece (200) or on the outer side surface of the support piece (300).
9. Erosion protected photovoltaic module according to claim 1,
the solar cell (400) is a substrate type thin film cell chip which comprises a transparent conducting layer, a solar light absorption layer, a metal conducting layer and a bottom plate layer which are sequentially connected from top to bottom.
10. Erosion protected photovoltaic module according to claim 1,
one of dry air, argon, krypton and sulfur hexafluoride gas is filled in the sealed cavity (600).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020911980.1U CN212161829U (en) | 2020-05-26 | 2020-05-26 | Erosion-resistant photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020911980.1U CN212161829U (en) | 2020-05-26 | 2020-05-26 | Erosion-resistant photovoltaic module |
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| Publication Number | Publication Date |
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| CN212161829U true CN212161829U (en) | 2020-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020911980.1U Active CN212161829U (en) | 2020-05-26 | 2020-05-26 | Erosion-resistant photovoltaic module |
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| CN (1) | CN212161829U (en) |
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- 2020-05-26 CN CN202020911980.1U patent/CN212161829U/en active Active
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