CN114823954A - Photovoltaic building integrated assembly and preparation method thereof - Google Patents
Photovoltaic building integrated assembly and preparation method thereof Download PDFInfo
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- CN114823954A CN114823954A CN202110129444.5A CN202110129444A CN114823954A CN 114823954 A CN114823954 A CN 114823954A CN 202110129444 A CN202110129444 A CN 202110129444A CN 114823954 A CN114823954 A CN 114823954A
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- H—ELECTRICITY
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- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S20/00—Supporting structures for PV modules
- H02S20/20—Supporting structures directly fixed to an immovable object
- H02S20/22—Supporting structures directly fixed to an immovable object specially adapted for buildings
- H02S20/23—Supporting structures directly fixed to an immovable object specially adapted for buildings specially adapted for roof structures
Abstract
The application discloses building integrated photovoltaic subassembly relates to solar photovoltaic technical field. The building integrated photovoltaic module specifically comprises: the battery comprises a metal substrate, and a first packaging adhesive film layer, a battery sheet layer, a second packaging adhesive film layer and a cover plate which are sequentially laid on the metal substrate; the metal substrate is provided with two opposite side edges, the two opposite side edges are provided with connecting parts, each connecting part comprises a side plate and a baffle plate, the side plates are connected with the metal substrate vertically, the two side plates and the metal substrate form an accommodating groove, an insulating glue film layer is laid in the accommodating groove, and the baffle plates are parallel to the metal substrate and extend towards the direction far away from the side plates; the first packaging adhesive film layer is laid on the insulating adhesive film layer; the metal substrate, the first packaging adhesive film layer, the battery sheet layer, the second packaging adhesive film layer and the cover plate are laminated to form an integrated structure. The photovoltaic building integrated assembly is low in cost, can reduce the installation environment requirement and the construction difficulty in the later stage, and improves the installation reliability of the photovoltaic assembly.
Description
Technical Field
The application belongs to the technical field of solar photovoltaics, and particularly relates to a photovoltaic building integrated assembly and a preparation method thereof.
Background
With the development of photovoltaic technology, solar energy is widely popularized as a green, environment-friendly and renewable energy source. Building Integrated Photovoltaic (BIPV) technology is a technology for integrating solar Photovoltaic power generation products into buildings, such as Photovoltaic tile roofs, Photovoltaic curtain walls, and the like. The BIPV technology is widely used because the photovoltaic module is combined with a building without occupying additional ground space.
Currently, in the BIPV technology, the conventional photovoltaic module is usually clamped to a pre-installed bracket on the roof by a clamp or adhered to the roof tile by a structural adhesive. However, in the above installation method, when the photovoltaic module is installed in a fixing manner by clamping with a clamp, not only the photovoltaic module support needs to be additionally arranged on the roof, but also the photovoltaic module and the roof tile are easily blown over and fall off together due to the gap between the photovoltaic module and the roof tile when the environmental wind is large; when the fixed mode that bonds is glued through the structure installs photovoltaic module, because the solidification that the structure was glued needs in specific humiture environment, consequently, requires highly to the engineering time, and it is higher to the bonding face requirement of roof tile when bonding moreover, otherwise appears very easily because the not firm problem of bonding of the not enough photovoltaic module that leads to of bonding face cleanliness. That is to say, the existing BIPV product not only has higher requirements on installation environment, but also has the problems of high construction difficulty, low installation reliability and the like.
Disclosure of Invention
The embodiment of the application aims to provide a photovoltaic building integrated assembly and a preparation method thereof, and can solve the problems that the existing BIPV product has high requirements on installation environment, high construction difficulty and high cost.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides a building integrated photovoltaic module, including:
the battery comprises a metal substrate, and a first packaging adhesive film layer, a battery sheet layer, a second packaging adhesive film layer and a cover plate which are sequentially laid on the metal substrate;
the metal substrate is provided with two opposite side edges, the two opposite side edges are provided with connecting parts, each connecting part comprises a side plate and a baffle plate, the side plates are connected with the metal substrate vertically, the two side plates and the metal substrate form an accommodating groove, an insulating glue film layer is laid in the accommodating groove, and the baffle plates are parallel to the metal substrate and extend towards the direction far away from the side plates;
the first packaging adhesive film layer is laid on the insulating adhesive film layer;
the metal substrate, the first packaging adhesive film layer, the battery sheet layer, the second packaging adhesive film layer and the cover plate are laminated to form an integrated structure.
The insulating glue film layer comprises a high-molecular composite material and a filler;
wherein, the filler is clamped in the polymer composite material.
Optionally, the polymer composite includes: at least one of epoxy resin-based composite materials, acrylic resin-based composite materials, silicone resin-based composite materials and polyurethane resin-based composite materials;
the filler comprises: at least one of glass fiber, glass fiber cloth, calcium carbonate, alumina, titanium dioxide, silicon dioxide, magnesium hydroxide and diatomite.
Optionally, the insulating glue film layers are multiple layers, and the polymer composite materials in at least two of the insulating glue film layers are the same.
Optionally, the baffle plate on one side of the metal substrate is provided with an insertion part, the baffle plate on the other side is provided with a limiting part with a limiting hole, and the limiting hole is matched with the insertion part;
when two adjacent photovoltaic building integrated components are connected, the inserting part of one component is inserted into the limiting hole of the other component.
Optionally, a flange is further arranged on one side of the insertion part, which is far away from the baffle plate, and the flange is parallel to the baffle plate and extends towards the direction far away from the side plate;
under the condition that the inserting part is inserted into the limiting hole, the baffle plate of one is lapped on the turned edge of the other.
Optionally, the thickness of the insulating glue film layer is 150 um-250 um;
and/or the cover plate comprises at least one of a glass substrate and a polymer composite plate;
and/or the light transmittance of the cover plate is 85% -94%;
and/or the thickness of the cover plate is 0.1 mm-5 mm.
In a second aspect, embodiments of the present application further provide a method for preparing a building-integrated photovoltaic module, where the method includes:
forming an insulating glue film layer in the accommodating groove of the metal substrate;
and a first packaging adhesive film layer, a battery sheet layer, a second packaging adhesive film layer and a cover plate are sequentially laid on the insulating adhesive film layer, and are subjected to curing treatment under a first preset condition to form an integrally formed structure.
Optionally, the step of forming the insulating glue film layer on the metal substrate includes:
pouring a first polymer composite material layer on the metal substrate;
paving a packing layer on the first polymer composite material layer;
and pouring a second polymer composite material layer on the filler layer, and curing the second polymer composite material layer under a second preset condition to form the insulating glue film layer.
Optionally, before the step of forming the insulating glue film layer on the metal substrate, the method further includes:
bending one side of the two opposite side edges of the metal substrate to form an inserting part, and bending the other side of the two opposite side edges to form a limiting part with a limiting hole;
the limiting holes are matched with the inserting portions, and when two adjacent photovoltaic building integrated assemblies are connected, the inserting portion of one is inserted into the limiting hole of the other.
In this application embodiment, because in photovoltaic building integration subassembly, through forming the holding tank on metal substrate, lay the insulating glue film layer in the holding tank, and laid first encapsulation glue film layer in proper order on the insulating glue film layer, the battery lamella, second encapsulation glue film layer and apron, form into integrated into one piece structure with above-mentioned multilayer material through the lamination, consequently, in practical application, can directly lay on the roof as the roof tile with above-mentioned photovoltaic building integration subassembly, thus, both can reduce BIPV product cost, installation environment when again can reduce the later stage and install photovoltaic module requires and the construction degree of difficulty on the roof, and improve photovoltaic module's installation reliability.
Drawings
FIG. 1 is a schematic cross-sectional structural view of a building integrated photovoltaic module according to an embodiment of the present disclosure;
FIG. 2 is an enlarged view of position A of FIG. 1;
FIG. 3 is a schematic structural diagram of a metal substrate according to an embodiment of the present disclosure;
fig. 4 is a second schematic structural diagram of the metal substrate according to the embodiment of the present application;
fig. 5 is a schematic view of an installation structure of a tool retaining sheet on a metal substrate according to an embodiment of the present application;
FIG. 6 is a schematic view of a connection structure of the building integrated photovoltaic module according to the embodiment of the present application;
fig. 7 is a flowchart illustrating steps of a method for manufacturing a building integrated photovoltaic module according to an embodiment of the present disclosure.
Description of reference numerals:
10: a metal substrate; 11: an insulating glue film layer; 101: a plug-in part; 102: a limiting part; 1021: a limiting hole; 20: a first encapsulation adhesive film layer; 30: a cell sheet layer; 40: a second encapsulation adhesive film layer; 50: a cover plate; 60: a tool catch; 103: a connecting portion; 1031: a side plate; 1032: a baffle plate; 1011: and (5) flanging.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
The photovoltaic building integrated assembly and the preparation method thereof provided by the embodiment of the present application are described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.
Referring to fig. 1, a schematic cross-sectional view of a building-integrated photovoltaic module according to an embodiment of the present application is shown. Referring to fig. 2, an enlarged view of the position a in fig. 1 is shown. Referring to fig. 3, a schematic structural diagram of a metal substrate according to an embodiment of the present application is shown. Referring to fig. 4, a second schematic structural diagram of the metal substrate according to the embodiment of the present application is shown.
In this application embodiment, the building integrated photovoltaic module specifically can include: the battery comprises a metal substrate 10, and a first packaging adhesive film layer 20, a battery sheet layer 30, a second packaging adhesive film layer 40 and a cover plate 50 which are sequentially laid on the metal substrate 10; the connecting parts 103 are arranged on two opposite side edges of the metal substrate 10, each connecting part 103 comprises a side plate 1031 and a baffle plate 1032 which are connected, each side plate 1031 is vertically connected to the metal substrate 10, the two side plates 1031 and the metal substrate 10 form a containing groove, an insulating glue film layer 11 is laid in the containing groove, and the baffle plate 1032 is parallel to the metal substrate 10 and extends towards the direction far away from the side plates 1031; the first packaging adhesive film layer 20 is laid on the insulating adhesive film layer 11; the metal substrate 10, the first packaging adhesive film layer 20, the battery sheet layer 30, the second packaging adhesive film layer 40 and the cover plate 50 are laminated to form an integral structure.
In this embodiment, a single-layer or multi-layer insulating adhesive film layer 11 may be pre-coated or laminated on the metal substrate 10, the metal substrate 10 with the insulating adhesive film layer 11 is used as a novel back protection material, then the first encapsulating adhesive film layer 20, the battery sheet layer 30, the second encapsulating adhesive film layer 40 and the cover plate 50 are sequentially laid on the insulating adhesive film layer 11 of the metal substrate 10, and finally, the materials may be subjected to laminating and curing treatment to form the integrated photovoltaic building module. In the embodiment of the application, above-mentioned building integrated photovoltaic subassembly directly lays on the roof as the roof tile, like this, both can reduce BIPV product cost, and the installation environment that meets when can avoid the later stage to install photovoltaic module again requires high, the construction degree of difficulty is big and photovoltaic module's installation reliability hangs down the scheduling problem.
In the embodiment of the present application, the metal substrate 10 includes, but is not limited to: an aluminum-zinc plated steel sheet, a zinc-aluminum-magnesium alloy sheet, an aluminum alloy sheet, or a steel sheet having a corrosion-resistant coating layer. For example, the metal substrate 10 may be a cold-rolled steel sheet with a thickness of 0.1-1 mm and a yield strength of 100-1000 MPa, and specifically, the gram weight of the aluminum-zinc plating layer on the cold-rolled steel sheet may be 10-200 g/m2, so as to ensure the corrosion resistance of the metal substrate 10, thereby meeting the long-term outdoor service requirements.
In the embodiment of the present application, before the insulating adhesive film layer 11 is coated on the metal substrate 10, a surface pretreatment may be performed on the metal substrate 10. For example, the surface of the metal substrate 10 is subjected to sand blasting, passivation, electroplating, electrostatic spraying, etc. to further improve the corrosion resistance of the metal substrate 10 and improve the bonding strength between the insulating glue film layer 11 and the metal substrate 10.
In the embodiment of the present application, the insulating adhesive film layer 11 may include a polymer composite material and a filler; wherein, the filler is clamped in the polymer composite material. Specifically, the polymer composite material may include: at least one of epoxy resin-based composite material, acrylic resin-based composite material, silicone resin-based composite material and polyurethane resin-based composite material; the filler may include: at least one of glass fiber, glass fiber cloth, calcium carbonate, alumina, titanium dioxide, silicon dioxide, magnesium hydroxide and diatomite.
In the embodiment of the application, the insulating adhesive film layer 11 formed by pouring and curing the polymer composite material and the filler on the metal substrate 10 is better in bonding strength between the insulating adhesive film layer 11 and the metal substrate 10, and the use of the binder is saved, and the cost is lower compared with the mode of directly bonding the insulating adhesive film layer 11 on the metal substrate 10.
In practical application, the polymer composite material is used as the main body of the insulating adhesive film layer 11, and the filler can play a role in enhancing the strength of the insulating adhesive film layer 11, improving the thermal stability of the insulating adhesive film layer 11 and the like. For example, the polymer composite material may be an acrylic resin-based composite material, the filler may be glass fiber cloth, a layer of the acrylic resin-based composite material may be first poured on the metal substrate 10, then the glass fiber cloth is placed, then the acrylic resin-based composite material is poured to submerge the glass fiber cloth and reach a preset thickness, and finally the material is placed in an oven for curing.
In the embodiment of the application, the high-weather-resistance polyester resin is formed by at least two or more of epoxy resin-based composite materials, acrylic resin-based composite materials, silicone resin-based composite materials, polyurethane resin-based composite materials and the like, so that the aging resistance of the integrated photovoltaic building component can be improved.
Of course, it is understood that in the case where the filler is a particulate material such as alumina, diatomaceous earth, or the like, it is generally necessary to premix the above filler with the polymer composite material, and an additive or the like for preventing the filler from settling may also be added.
In the embodiment of the present application, the preset thickness of the insulating adhesive film layer 11 can be optimally set according to the system voltage of the application of the whole assembly. For example, in the assembly product of 1000V system voltage, the thickness of the insulating adhesive film layer 11 may be any value in the range of 150um to 250 um. To the subassembly product of 1000V system voltage, the thickness of insulating glue film layer 11 sets up to 200um, can make the performance of product better.
In the embodiment of the present application, the insulating adhesive film layer 11 may be one or more layers (including two layers). In the embodiment of the present application, when the insulating adhesive film layers 11 are multiple layers, the adjacent insulating adhesive film layers 11 may be understood to share the same layer of the polymer composite material; the polymer composite materials in the multiple insulating adhesive film layers 11 may be different, or the polymer composite materials in at least two of the insulating adhesive film layers 11 are the same. For example, under the condition that the polymer composite material is an acrylic resin-based composite material and the filler is glass fiber cloth, the acrylic resin-based composite material and the glass fiber cloth can be alternately arranged into a plurality of layers, so that the processing difficulty of the insulating glue film layer 11 can be effectively reduced. In practical applications, the plurality of layers of acrylic resin-based composite material and glass fiber cloth which are alternately arranged can be understood as one insulating adhesive film layer 11, or can also be understood as a plurality of insulating adhesive film layers 11.
In practical application, different colors can be added into the polymer composite material according to actual required colors. For example, red is added to the polymer composite layer whose bottom layer is in contact with the metal substrate 10 to reduce the ultraviolet damage. It is understood that, the person skilled in the art can treat the color of the insulating glue film layer 11 by adding pigment or spraying primer on the metal substrate 10 according to actual needs, and the embodiment of the present invention is not limited thereto.
In the embodiment of the present application, before the insulating adhesive film layer 11 is formed on the metal substrate 10, a molding process may be performed on the metal substrate 10. For example, the two opposite side edges of the metal substrate 10 may be respectively bent to form an accommodating groove for accommodating the insulating adhesive film layer 11, so as to further reduce the difficulty in laminating the insulating adhesive film layer 11. Alternatively, two opposite side edges of the metal substrates 10 may be bent to form a structure that is engaged with each other, so that the metal substrates 10 can be engaged and connected quickly and easily.
In the embodiment of the present application, in order to make the arrangement of the insulating adhesive film layer 11 on the metal substrate 10 simpler, the connecting portions 103 may be disposed on two opposite sides of the metal substrate 10, each connecting portion 103 includes a side plate 1031 and a baffle 1032 connected to each other, the side plates 1031 are vertically connected to the metal substrate 10, two side plates 1031 form an accommodating groove with the metal substrate 10, and the insulating adhesive film layer 11 is laid in the accommodating groove; the baffle 1032 extends parallel to the metal base plate 10 and toward a direction away from the side plate 1031.
In the embodiment of the present application, the insulating adhesive film layer 11 may be coated on the metal substrate 10 by casting, curing, and the like through the polymer composite material and the filler. In practical application, the polymer composite material, such as acrylic resin, has a certain fluidity during casting, so that the tool blocking pieces 60 can be respectively arranged on the side edges of the metal substrate 10 where the side plates 1031 are not arranged, that is, the tool blocking pieces 60, the side plates 1031 and the metal substrate 10 form an accommodating groove with a circumferential side wall, and then the polymer composite material is cast in the accommodating groove, so that the polymer composite material can be prevented from losing from the metal substrate 10 before being cured.
Referring to fig. 5, a schematic view of a mounting structure of a tool retaining sheet on a metal substrate according to an embodiment of the present application is shown. In the embodiment of the application, the tool retaining sheet 60 is usually fixed through silicone grease, so that the tool retaining sheet 60 can be conveniently and quickly fixed on one hand, and the subsequent dismounting and demoulding of the tool retaining sheet 60 can be easier on the other hand.
Optionally, the baffle 1032 on one side of the metal substrate 10 is provided with an insertion part 101, the baffle 1032 on the other side is provided with a limiting part 102 with a limiting hole 1021, and the limiting hole 1021 is matched with the insertion part 101; when two adjacent photovoltaic building integrated components are connected, the inserting part 101 of one is inserted into the limiting hole 1021 of the other.
In the embodiment of the present application, in order to realize the quick connection between multiple building integrated photovoltaic modules, the metal substrate 10 may be shaped. For example, on two opposite sides of the metal substrate 10, one side of the metal substrate 10 is bent to form a rectangular-section plug part 101, and the other side of the metal substrate 10 is bent to form a stopper part 102 having a rectangular hole, and when two components are connected, the rectangular plug part 101 is inserted into the rectangular hole, thereby completing the quick connection of the two components. In the embodiment of the application, the two assemblies are connected in a manner that the insertion part 101 is inserted into the limiting hole 1021, so that the assemblies can be quickly and fixedly mounted, and the formed whole photovoltaic system is safer to fix.
In practical applications, the cross-sectional shape of the inserting portion 101 may be various, such as a triangle, a pentagon, a non-closed circle, or the like. Accordingly, the shape of the limiting hole 1021 is matched with the cross-sectional shape of the insertion part 101, and the aperture of the limiting hole 1021 is generally set to be larger than the external dimension of the insertion part 101, so that the insertion part 101 can be inserted into the limiting hole 1021 more easily.
Of course, it can be understood that, in order to simplify the structures of the insertion part 101 and the limiting part 102, the insertion part 101 may also be configured as a hook structure, the limiting part 102 may be configured as a slot structure, and when the two components are connected, the hook of one component is embedded in the slot of the other component, so as to realize the quick connection of the two components.
In the embodiment of the present application, both the insertion portion 101 and the limiting hole 1021 may be formed by bending metal. The insertion portion 101 can be similar to a key, and the position-limiting portion 102 can be similar to a lock, wherein the position-limiting hole 1021 is a lock hole. When the two photovoltaic building integrated structures are connected, the two photovoltaic building integrated structures can be regarded as a connection mode of inserting a key into the lock hole, so that the structural stability and the reliability of the components can be higher when the components are connected with each other.
In practical applications, in order to simplify the building integrated photovoltaic module, before the insulating adhesive film layer 11 is laid on the metal substrate 10, a receiving groove for receiving the insulating adhesive film layer, the inserting portion 101, and the limiting portion 102 are formed on the metal substrate 10 by bending the metal substrate 10. Specifically, the two side edges of the metal substrate are bent to form the vertically connected baffle 1032 and the side plate 1031, so that the two side plates 1031 are perpendicular to the metal substrate 10 and form an accommodating groove with the metal substrate 10, which is not only beneficial to the processing of the subsequent inserting part 101 and the limiting part 102, but also makes the arrangement of the insulating glue film layer 11 easier.
In the embodiment of the application, the metal substrate 10 is bent to form the accommodating groove, the insertion part 101 and the limiting part 102, so that the processing is simple and the cost is low.
Optionally, a flange 1011 is further disposed on one side of the insertion part 101 away from the baffle 1032, and the flange 1011 is parallel to the baffle 1032 and extends in a direction away from the side plate 1031; under the condition that the inserting part 101 is inserted into the limiting hole 1021, the baffle 1032 of one of the two parts is lapped on the turned edge 1011 of the other part.
In the embodiment of the application, one side of keeping away from baffle 1032 at grafting portion 101 sets up turn-ups 1011, can make grafting portion 101's structure more stable on the one hand, and mechanical strength is better, and on the other hand, can also be when photovoltaic building integrated component links to each other, through the turn-ups 1011 butt of a subassembly in the curb plate 1031 of another subassembly, turn-ups 1011 can also play the direction and promote the effect of grafting portion 101 stability in spacing hole 1021.
Referring to fig. 6, a schematic connection structure of the building integrated photovoltaic module according to the embodiment of the present application is shown. When two building integrated photovoltaic modules are connected, the inserting part 101 of one of the two building integrated photovoltaic modules is inserted into the limiting hole 1021 of the other one of the two building integrated photovoltaic modules, and the baffle 1032 of one of the two building integrated photovoltaic modules is lapped on the flanging 1011 of the other one of the two building integrated photovoltaic modules, so that the connection of the adjacent modules is more reliable.
In the embodiment of the present application, the cover plate 50 may be the same as the cover plate of the conventional photovoltaic module product, including but not limited to a glass substrate, a polymer composite plate, and the like. The light transmittance of the cover plate 50 may be 85% to 94% (for light having a wavelength of 400nm to 1100 nm). In practical applications, the thickness of the cover plate 50 may be any value within a range from 0.1mm to 5mm, and those skilled in the art can set the thickness according to practical requirements, which is not limited in the embodiments of the present application.
In the embodiment of the present application, the first and second encapsulant films 20 and 40 may be any one of ethylene-vinyl acetate copolymer (EVA), polyolefin (polyoefins, POE), Polyurethane (PU), Polydimethylsiloxane (PDMS), Polyvinyl Butyral (PVB), and ionomer. Optionally, the first packaging adhesive film and the second packaging adhesive film may both adopt polydimethylsiloxane, so that the packaging performance of the assembly is better.
In this embodiment, the cell sheet layer 30 may include a plurality of cells connected in series and/or in parallel, and specifically, the cell sheet layer 30 may be connected in the same manner as the cells in the conventional photovoltaic module, which is not described herein again in this embodiment.
In summary, the building integrated photovoltaic module described in the embodiments of the present application at least includes the following advantages:
in this application embodiment, because in photovoltaic building integration subassembly, through forming the holding tank on metal substrate, lay the insulating glue film layer in the holding tank, and laid first encapsulation glue film layer in proper order on the insulating glue film layer, the battery lamella, second encapsulation glue film layer and apron, form into integrated into one piece structure with above-mentioned multilayer material through the lamination, consequently, in practical application, can directly lay on the roof as the roof tile with above-mentioned photovoltaic building integration subassembly, thus, both can reduce BIPV product cost, installation environment when again can reduce the later stage and install photovoltaic module requires and the construction degree of difficulty on the roof, and improve photovoltaic module's installation reliability.
The embodiment of the application also provides a preparation method of the photovoltaic building integrated assembly. Referring to fig. 7, a flowchart illustrating steps of a method for manufacturing a building-integrated photovoltaic module according to an embodiment of the present application may specifically include the following steps:
step 701: and forming an insulating glue film layer in the accommodating groove of the metal substrate.
In this application embodiment, insulating glue film layer specifically can set up in metal substrate's holding tank through modes such as pouring, coating, then through the mode solidification processing of vacuum degassing solidification. In the embodiment of the application, the bonding force between the insulating adhesive film layer formed on the metal substrate and the metal substrate is stronger, and the insulating adhesive film layer is less prone to falling off from the metal substrate. In addition, the process of forming the insulating glue film layer on the metal substrate can also be prepared in a solar module factory, and extra preparation and transportation cost of the metal substrate is not required to be increased.
In the embodiment of the present application, the specific structure of the accommodating groove can refer to the above embodiment, and is not described herein again.
In this application embodiment, before forming the insulating glue film layer on the metal substrate, can also carry out the molding to the metal substrate and handle, specifically can include: bending one side of the two opposite side edges of the metal substrate to form an inserting part, and bending the other side of the two opposite side edges to form a limiting part with a limiting hole; the limiting holes are matched with the inserting portions, and when two adjacent photovoltaic building integrated assemblies are connected, the inserting portion of one is inserted into the limiting hole of the other.
In the embodiment of the application, through bending the metal substrate, thereby bending one side of the metal substrate to form the insertion part, bending the other side to form the limiting part with the limiting hole, and enabling the insertion part to be inserted into the limiting hole, so that the processing cost of the metal substrate can be reduced, the later-stage installation of the finally formed photovoltaic building integrated assembly is simpler and more convenient, and the installation efficiency is obviously improved.
In the embodiment of the application, when the metal substrate is bent to form the insertion part and the limiting part, the connecting part can be formed on both sides of the metal substrate in a bending mode, specifically, the connecting part can comprise a side plate and a baffle plate which are connected, the side plate is vertically connected to the metal substrate, the two side plates and the metal substrate form an accommodating groove, and the insulating glue film layer is laid in the accommodating groove; the baffle is parallel to the metal substrate and extends towards the direction far away from the side plate.
In the embodiment of the application, have the connecting portion of the curb plate of perpendicular connection and baffle through the setting, be equipped with grafting portion on the baffle that lies in metal substrate one side, be equipped with spacing portion on the baffle of opposite side, can make the processing of bending of grafting portion and spacing portion simpler on the one hand, on the other hand can also form the holding tank between curb plate and the metal substrate through two perpendicular to metal substrate, so that follow-up laying insulating cement rete in the holding tank, make laying of insulating cement rete simpler.
Optionally, in this embodiment of the application, before the insulating adhesive film layer is formed on the metal substrate, surface pretreatment may be performed on the metal substrate to improve corrosion resistance of the metal substrate and improve bonding strength between the metal substrate and the insulating adhesive film layer; wherein the surface pretreatment may specifically include: sand blasting, passivation, electroplating, electrostatic spraying, roughening treatment and the like. For example, the surface roughness of the metal substrate is increased by performing sand blasting or roughening treatment on the surface of the metal substrate, so that the bonding strength between the metal substrate and the insulating adhesive film layer can be improved.
Optionally, in this embodiment of the application, the step of forming the insulating adhesive film layer on the metal substrate may include:
step 7011: and pouring a first polymer composite material layer on the metal substrate.
In the embodiment of the present application, the two side edges of the metal substrate may be first subjected to a molding process to form the accommodation groove formed by the two side plates and the metal substrate. In order to avoid first polymer composite layer to run off by metal substrate before not solidifying, tetrafluoroethylene frock separation blade is fixed respectively to other sides on the metal substrate that is figurative to make the circumference of holding tank all have the lateral wall to shelter from, like this, when forming the insulating glue film layer in the holding tank, because the sheltering from of lateral wall just can effectively avoid having flowable polymer composite's loss, more be favorable to the formation of insulating glue film layer.
In practical application, the tool separation blade is usually fixed by silicone grease, so that the subsequent tool separation blade is simpler to remove. In the embodiment of the application, the degree of depth of holding tank is the same with the thickness of insulating glue film layer usually, and perhaps, the thickness of insulating glue film layer is the same with the height of frock separation blade, thereby the thickness of highly controlled insulating glue film layer through injecing the frock separation blade makes the quantity control that packs polymer composite and pack in the holding tank more simple and convenient like this.
In the embodiment of the application, the first polymer composite material layer may be a high weather-resistant polyester resin composite material formed by polymerizing one or more of epoxy resin-based composite materials, acrylic resin-based composite materials, silicone resin-based composite materials, polyurethane resin-based composite materials and the like. In this application embodiment, can pour the high resistant polyester resin of one deck above-mentioned at first in the holding tank.
Step 7013: and a packing layer is paved on the first polymer composite material layer.
In the embodiment of the present application, the filler layer may specifically include at least one of glass fiber, glass fiber cloth, calcium carbonate, alumina, titanium dioxide, silica, magnesium hydroxide, and diatomaceous earth.
For example, one or more layers of glass fiber cloth are laid on the high weather resistance polyester resin layer poured in the accommodating tank, and the thermal stability of the finally formed insulating adhesive film layer is improved through the glass fiber cloth.
Step 7015: and pouring a second polymer composite material layer on the filler layer, and curing the second polymer composite material layer under a second preset condition to form the insulating glue film layer.
In the embodiment of the present application, the second polymer composite material layer may also be a high weather-resistant polyester resin composite material formed by polymerizing one or more of epoxy resin-based composite materials, acrylic resin-based composite materials, silicone resin-based composite materials, polyurethane resin-based composite materials, and the like. Specifically, the first polymer composite material layer and the second polymer composite material layer may be the same high weather-resistant polyester resin composite material or different high weather-resistant polyester resin composite materials, and those skilled in the art can set the materials according to actual situations.
In practical application, a highly weather-resistant polyester resin layer may be continuously poured on the glass fiber cloth laid in step 6013 until the highly weather-resistant polyester resin submerges the glass fiber cloth, and a liquid level of the highly weather-resistant polyester resin layer is the same as a height of a tool retaining sheet, and then the metal substrate is subjected to vacuum degassing treatment by communicating the polymer composite material layer and the filler layer, and finally placed in an oven for curing to form an insulating glue film layer stably combined with the metal substrate. Wherein the second preset condition may include: the curing temperature is 160 ℃ and the curing time is 30 min.
Of course, it can be understood that, in order to improve the curing effect of the material, a curing agent may be further added to the polymer composite material layer, and the specific curing condition may be adjusted according to the selected resin system and the curing agent, which is not limited in this application.
In practical applications, when the filler is calcium carbonate, alumina, titanium dioxide, silica, magnesium hydroxide, diatomaceous earth, or other particulate matter, the above step 7011, step 7013, and step 7015 may be combined into a same step, which may specifically include: firstly, premixing a polymer composite material and a filler to form a mixture so that the granular filler can be uniformly filled in the polymer composite material; and then pouring the mixture of the polymer composite material and the filler on a metal substrate to form an insulating adhesive film layer. It should be noted that, the mixture may be poured into multiple layers on the metal substrate to form multiple insulating adhesive film layers, and the polymer composite material and the filler in each layer of the mixture may be the same or different. The skilled person can also fill pigments and the like into the above mixture according to actual needs to form the insulating glue film layer with color.
In practical application, after the polymer composite material and the filler are poured on the metal substrate, the material needs to be subjected to vacuum degassing treatment, and after the vacuum degassing treatment, the metal substrate and the insulating adhesive film layer are placed in an oven for curing treatment. It is understood that, in order to reduce the curing time of the material and improve the curing performance of the material, a corresponding curing agent may be filled in the polymer composite material or the filler. The specific curing conditions may be adjusted according to the types and amounts of the polymer composite material and the curing agent, which is not specifically limited in this application.
As a specific example, when the polymer composite material is an acrylic resin-based composite material and the filler is glass fiber cloth, the specific curing conditions may be as follows: the curing temperature is 160 ℃ and the curing time is 30 min.
Step 702: and a first packaging adhesive film layer, a battery sheet layer, a second packaging adhesive film layer and a cover plate are sequentially laid on the insulating adhesive film layer, and are subjected to curing treatment under a first preset condition to form an integrally formed structure.
In this application embodiment, place first encapsulation glued membrane layer, battery piece subassembly (battery lamella), second encapsulation glued membrane layer and apron back in proper order on insulating glued membrane layer, need wear out the busbar of battery lamella in by the through wires hole of reserving. The specific threading hole can be set according to the position of the reserved junction box, and the embodiment of the application is not particularly limited in this respect.
In the embodiment of the present application, the first encapsulation adhesive film layer, the second encapsulation adhesive film layer, the battery sheet layer, and the cover plate may be selectively disposed according to the previous embodiment, which is not repeated herein.
In the embodiment of the application, lay first encapsulation glued membrane layer, battery piece layer, second encapsulation glued membrane layer and apron back in proper order on the insulating glued membrane layer, need place above-mentioned subassembly and carry out solidification treatment under first preset condition to make final photovoltaic building integration subassembly can be integrated into one piece structure.
In an optional embodiment of the present application, when the materials of the first encapsulation adhesive film layer and the second encapsulation adhesive film layer adopt liquid silicone resin capable of being cured by ultraviolet light, the above laid assembly can be directly placed under an ultraviolet light source for irradiation and curing. Since the curing time is related to the power of the selected light source, the specific curing time can be adjusted according to the power of the curing light source. Optionally, the first preset condition may be: curing with a mercury lamp with a power of 2Kw/m 2 The curing time is 30-60 s.
In another optional embodiment of the present application, the material of the first encapsulation adhesive film layer and the second encapsulation adhesive film layer may also be liquid silicone resin that can be thermally cured, and then the first preset condition may be: the curing temperature is 90 ℃ and the curing time is 10 min.
In the embodiment of the application, the assembly is cured by the curing mode, so that the energy consumption is lower, the energy is more energy-saving and environment-friendly, and the problem of high energy consumption caused by high lamination temperature in the preparation process of the conventional photovoltaic assembly can be effectively solved.
Optionally, step 702 may further include: and (4) dismantling the fixture baffle, and installing a junction box on the integrated photovoltaic building assembly.
In the embodiment of the application, the junction box is pre-installed in advance on the photovoltaic building integrated assembly, so that the workload of site construction can be reduced when the assembly is applied to a roof steel structure, and the installation efficiency of the assembly is effectively improved.
It can be understood that, when laying above-mentioned photovoltaic building integration subassembly on the roof, can lay the waterproof layer on the steel construction in advance on the roof, the overlap joint mode that above-mentioned subassembly of this application embodiment can be similar to the tile is installed promptly, simple and convenient.
In the embodiment of the application, when the photovoltaic building integrated assembly is applied, the environment adaptive capacity is stronger, and the problem that the conventional BIPV assembly is difficult to cure in the construction structural adhesive in winter is effectively avoided.
In this application embodiment, the concrete size of building integrated photovoltaic subassembly can be set for according to actual need, for example, can be the same with the small tile product size on civil buildings roof, also can be the same with the big tile product size of industrial plant house top usefulness, consequently, this application embodiment the application scope of building integrated photovoltaic subassembly is wider.
In summary, the preparation method of the building integrated photovoltaic module according to the embodiment of the present application at least includes the following advantages:
in the embodiment of the application, owing to form insulating glue film layer at first on metal substrate, can effectively promote the bonding strength between metal substrate and the insulating glue film layer, then lay first encapsulation glue film layer, battery lamella, second encapsulation glue film layer and apron on the insulating glue film layer in proper order to with it solidification processing formation integrated into one piece structure under first predetermined condition, above-mentioned material can directly be laid on the roof as the roof tile, and like this, both can reduce the product cost of subassembly, the installation environment that meets when can avoid the later stage to install photovoltaic module again requires highly, the construction degree of difficulty is big and photovoltaic module's installation reliability hangs down the scheduling problem.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A building-integrated photovoltaic assembly, comprising: the battery comprises a metal substrate, and a first packaging adhesive film layer, a battery sheet layer, a second packaging adhesive film layer and a cover plate which are sequentially laid on the metal substrate;
the metal substrate is provided with two opposite side edges, the two opposite side edges are provided with connecting parts, each connecting part comprises a side plate and a baffle plate, the side plates are connected with the metal substrate vertically, the two side plates and the metal substrate form an accommodating groove, an insulating glue film layer is laid in the accommodating groove, and the baffle plates are parallel to the metal substrate and extend towards the direction far away from the side plates;
the first packaging adhesive film layer is laid on the insulating adhesive film layer;
the metal substrate, the first packaging adhesive film layer, the battery sheet layer, the second packaging adhesive film layer and the cover plate are laminated to form an integrated structure.
2. The building-integrated photovoltaic module according to claim 1, wherein the insulating adhesive layer comprises a polymer composite and a filler;
wherein, the filler is clamped in the polymer composite material.
3. The building-integrated photovoltaic assembly according to claim 2, wherein the polymer composite comprises: at least one of epoxy resin-based composite materials, acrylic resin-based composite materials, silicone resin-based composite materials and polyurethane resin-based composite materials;
the filler comprises: at least one of glass fiber, glass fiber cloth, calcium carbonate, alumina, titanium dioxide, silicon dioxide, magnesium hydroxide and diatomite.
4. The integrated photovoltaic building assembly according to claim 2, wherein the insulating adhesive film layer is multi-layered, and the polymer composite material in at least two of the insulating adhesive film layers is the same.
5. The integrated photovoltaic building component according to claim 1, wherein the baffle plate on one side of the metal substrate is provided with an insertion part, and the baffle plate on the other side is provided with a limiting part with a limiting hole, wherein the limiting hole is matched with the insertion part;
when two adjacent photovoltaic building integrated components are connected, the inserting part of one photovoltaic building integrated component is inserted into the limiting hole of the other photovoltaic building integrated component.
6. The building-integrated photovoltaic module according to claim 5, wherein a flange is further arranged on one side of the inserting portion away from the baffle, and the flange is parallel to the baffle and extends towards the direction away from the side plate;
under the condition that the inserting part is inserted into the limiting hole, the baffle plate of one is lapped on the turned edge of the other.
7. The building-integrated photovoltaic module according to claim 1, wherein the thickness of the insulating adhesive film layer is 150 to 250 um;
and/or the cover plate comprises at least one of a glass substrate and a polymer composite plate;
and/or the light transmittance of the cover plate is 85% -94%;
and/or the thickness of the cover plate is 0.1 mm-5 mm.
8. A method of making a building-integrated photovoltaic assembly, the method comprising:
forming an insulating glue film layer in the accommodating groove of the metal substrate;
and a first packaging adhesive film layer, a battery sheet layer, a second packaging adhesive film layer and a cover plate are sequentially laid on the insulating adhesive film layer, and are subjected to curing treatment under a first preset condition to form an integrally formed structure.
9. The method according to claim 8, wherein the step of forming the insulating adhesive film layer on the metal substrate comprises:
pouring a first polymer composite material layer on the metal substrate;
paving a packing layer on the first polymer composite material layer;
and pouring a second polymer composite material layer on the filler layer, and curing the second polymer composite material layer under a second preset condition to form the insulating glue film layer.
10. The method according to claim 9, wherein the step of forming the insulating adhesive film layer on the metal substrate further comprises:
bending one side of the two opposite side edges of the metal substrate to form an inserting part, and bending the other side of the two opposite side edges to form a limiting part with a limiting hole;
the limiting holes are matched with the inserting portions, and when two adjacent photovoltaic building integrated assemblies are connected, the inserting portion of one is inserted into the limiting hole of the other.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110129444.5A CN114823954A (en) | 2021-01-29 | 2021-01-29 | Photovoltaic building integrated assembly and preparation method thereof |
| PCT/CN2021/124637 WO2022160788A1 (en) | 2021-01-29 | 2021-10-19 | Building integrated photovoltaic assembly and preparation method therefor |
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| CN110729378A (en) * | 2018-07-17 | 2020-01-24 | 嵊州晴远环保科技有限公司 | Manufacturing method of electric heat cogeneration photovoltaic panel |
| CN208738279U (en) * | 2018-10-15 | 2019-04-12 | 崔永祥 | A kind of photovoltaic shoe plate |
| JP3228326U (en) * | 2020-07-09 | 2020-10-22 | アクセルエナジー パワー ピーティーイー エルティーディーＡｃｃｅｌｅｎｅｒｇｙ Ｐｏｗｅｒ Ｐｔｅ． Ｌｔｄ． | Photovoltaic building materials capable of safe power generation |
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