TW202219441A - Solar panel for pitched roof and construction method thereof - Google Patents

Abstract

A solar panel for pitched roof and construction method of the solar panel are disclosed. The solar panel includes a substrate, a first bonding layer, an insulating layer, a second bonding layer, a solar cell module layer, a third bonding layer, a brightness enhancement film layer, and a fourth bonding layer and a transparent fluorine element film layer from bottom to top. Since the peripheral fixing area of the substrate has fixing holes for fixing purposes, the solar panel of the present invention can replace the existing asphalt shingles and be applied on the pitched roof, and has the characteristics such as water removal, moisture resistance, extreme temperature resistance and wind attack. The solar panel can not only provide renewable energy, but its neat appearance can also increase the beauty of the pitched roof.

Description

Solar panels for laying sloping roofs and their construction methods

The present invention relates to a solar cell panel and a construction method thereof, in particular to a solar cell panel for laying sloping roofs and a construction method thereof.

The progress of human civilization is reflected in the reduction in the consumption of resources. From this point of view, the development and use of renewable or sustainable energy is also a milestone in the progress of civilization. Therefore, more and more countries have begun to focus on the promotion of renewable energy, and the most notable achievement is the development and utilization of solar energy. In Taiwan, people can see solar panels on the roofs of many homes, factories, abandoned land, and even around public facilities. These solar panels convert solar energy into electricity. In addition to supplying electrical equipment in nearby buildings, if there is any surplus, the excess electricity can also be integrated into the grid and sold to the units in need. The reason why Taiwan is able to install solar panels on a large scale is that most of the buildings in Taiwan are reinforced concrete structures, which are strong and resistant to strong winds. In addition, the tops of these buildings are mostly flat, making it very convenient to install solar panels. However, for some specific building clusters, the installation of solar panels is very disadvantageous. An example is the use of wooden structures with pitched roofs.

Generally speaking, sloping roof buildings using wooden structures are the main types of residential houses in European and American countries. Timber is easy to obtain, cheap to build, and relatively low in house taxes. The sloping roof can be used for waterproofing and anti-snow, and the construction is convenient. However, based on the insufficient support force of the structure and the angle of the erection surface, it is very unstable to mount the solar panel fixing device from the indoor to the outdoor. Even if it can be erected, the protruding solar panel structure is incompatible with the existing sloping roof design. Therefore, if you want to install solar panels to use renewable energy in a sloping roof building with a wooden structure, you must understand the traditional construction methods and materials, and appropriately transform the solar panel structure.

The common waterproof and outermost building material for sloping roofs is asphalt shingles. Asphalt shingles themselves are lightweight, bendable and easy to cut, and can be fastened to the shingles of pitched roofs simply with a nail gun. In terms of waterproofing, the upper and lower rows of asphalt shingles are stacked in a similar way to traditional shingles, forming an inclined stepped structure, so that rainwater can flow downwards along the slope. In addition, a layer of tarpaulin (glue) is usually laid between the asphalt shingles and the roof slab, and it is difficult for rainwater to pass through the tarpaulin and seep down along the nails. If the retrofitted solar panel can have special connection device and waterproof treatment to replace the asphalt shingle without changing the existing construction, then it can enjoy the benefits of the asphalt shingle being firmly fixed on the sloping roof (no additional fixing), its The erected house will also have an aesthetically consistent appearance. However, no such product is currently available on the market.

This text extracts and compiles certain features of the invention. Other features will be disclosed in subsequent paragraphs. It is intended to cover various modifications and similar arrangements within the spirit and scope of the appended claims.

In order to solve the aforementioned problems, a new type of solar panel that can replace asphalt shingles is provided. The present invention discloses a solar panel for laying pitched roofs, which includes a substrate, a peripheral fixing area and a functional element area; A first adhesive layer is laid over the functional element area; an insulating layer is located above the first adhesive layer and is bonded to the substrate through the first adhesive layer; a second adhesive layer is laid over the insulating layer ; a solar cell module layer comprising at least one solar cell located above the second adhesive layer and bonded to the insulating layer through the second adhesive layer, wherein the at least one solar cell converts solar energy through at least two electrode lines The at least two electrode lines extend to the peripheral fixed area; a third adhesive layer is laid over the solar cell module layer and partially adhered to the second adhesive layer; a brightness enhancement film layer, the upper surface of which is It has a plurality of microstructures, which are located above the third adhesive layer, and are bonded to the solar cell module layer through the third adhesive layer; a fourth adhesive layer is laid over the brightness enhancement film layer; and a transparent The optical fluorine element film layer has a plurality of three-dimensional corrugated light-enhancing structures on its upper surface, is located above the fourth adhesive layer, and is bonded to the brightness-enhancing film layer through the fourth adhesive layer. The light-enhancing structure guides multi-directional light from the outside into it, and the microstructure changes the light path of the light from the light-transmitting fluorine element-containing thin film layer to make it more toward the vertical direction of the at least one solar cell, and the incident the at least one solar cell.

Preferably, a plurality of first fixing holes and a plurality of second fixing holes are respectively formed on two parallel sides of the peripheral fixing area.

Preferably, the material of the substrate can be painted stainless steel, stainless steel, painted alloy steel plate, alloy steel plate, aluminum, aluminum alloy or plastic.

Preferably, the material of the first adhesive layer can be ethylene-vinyl acetate copolymer (Ethylene-Vinyl Acetate, EVA) or polyolefin elastomer (Polyolefin Elastomers, POE).

Preferably, the material of the second adhesive layer is ethylene vinyl acetate copolymer or polyene elastomer.

Preferably, the material of the third adhesive layer is ethylene vinyl acetate copolymer or polyene elastomer.

Preferably, the material of the fourth adhesive layer is ethylene vinyl acetate copolymer or polyene elastomer.

Preferably, the insulating layer is made of polyvinyl fluoride (Polyvinyl Fluoride, PVF) or polyethylene terephthalate (Polyethylene Terephthalate, PET).

In one embodiment, if the number of the solar cells is two or more, the electrode lines of the same electrode can be connected to form an electrode bus line. According to the present invention, the top-view direction of the three-dimensional corrugated shape of the light-enhancing structure is formed into continuous adjacent circles on a plane, and each circle has a radius of curvature not greater than 1 mm.

The substrate can be square or rectangular.

The present invention also discloses a construction method for laying a solar cell panel for a pitched roof, comprising the steps of: a) laying a waterproof layer on a roof panel of a pitched roof; b) laying a plurality of solar cell panels, The side where a fixing hole is located is arranged in a row along a reference edge of the roof panel; c) Use nails or screws to fix the solar cell panels on the roof panel through the first fixing holes and the waterproof layer; d) Continue the previous row of solar panels, continue to lay several solar panels into a new row, and align the first fixing holes of the newly laid solar panels with the second fixing holes of the previous row of solar panels in sequence ; e) Use nails or screws to fix the solar panels on the roof panel through the first fixing holes, the corresponding second fixing holes and the waterproof layer; f) Repeat steps d) and e) , until a predetermined area of the roof panel is covered by the solar panels; and g) connect the electrode wires or electrode bus lines of the adjacent two solar panels to the negative electrode according to the way that the positive electrode is electrically connected to the negative electrode with waterproof conductive tape. catch.

According to the present invention, the reference edge is parallel to or perpendicular to a specific horizontal upper layer. The waterproof layer may be waterproof linoleum.

Since the peripheral fixing area of the base plate has fixing holes for fixing purposes, the solar cell panel of the present invention can replace the existing asphalt shingles and be applied to sloping roofs, and has the characteristics of water removal, moisture resistance, extreme temperature resistance, and wind resistance. In addition to providing renewable energy, the solar panel's neat and consistent appearance also adds to the aesthetics of a pitched roof.

The present invention will be described more specifically by referring to the following embodiments.

Please refer to FIGS. 1 and 2. FIG. 1 is a schematic top view of a solar cell panel 1 for laying a pitched roof according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the solar cell panel 1 along line AA'. It should be noted that, for the convenience of illustration, FIGS. 1 and 2 are not drawn in scale according to the actual product design. For example, the actual thickness of the solar panel 1 may be 2 mm, and its length and width are often tens of centimeters or even more than one meter. Such a design will cause the thickness of the drawing to be excessively squeezed and the content cannot be discerned. Therefore, the thickness of Figure 2 is greatly enlarged compared to its length and width. The positions between the elements and the thicknesses, lengths and widths of the elements are also illustrative, and the present invention is not limited by the content of the drawings. Furthermore, since many technical elements of the solar panel 1 are transparent, FIG. 1 only shows the technical elements that can be seen in practice.

Structurally, the solar cell panel 1 includes a substrate 10 , a first adhesive layer 11 , an insulating layer 12 , a second adhesive layer 13 , a solar cell module layer 14 , and a third adhesive layer from bottom to top. Layer 15 , a brightness enhancement film layer 16 , a fourth adhesive layer 17 and a light-transmitting fluorine-containing element thin film layer 18 . The characteristics, functions, materials and combinations of the above technical elements will be described in detail in the text below.

The base plate 10 is the basis for carrying other components, and needs to have sufficient toughness, preferably heat resistance, cold resistance and moisture resistance. Therefore, the base plate 10 can be made of lacquered stainless steel, stainless steel, lacquered alloy steel plate, alloy steel plate, aluminum, and aluminum alloy. Or plastic as material. In this embodiment, stainless steel is used as an example for description. In principle, the appearance of the substrate 10 is not limited, as long as there are two parallel sides that can be mounted. Therefore, the shape of the substrate 10 is preferably a square or a rectangle, and in this embodiment, it is a rectangle. The substrate 10 includes a peripheral fixing area 101 and a functional element area 102 . The functional element area 102 is an area for stacking other technical elements, and the peripheral fixing area 101 is another part that does not belong to the functional element area 102 and can be used to connect with the substrate 10 of the adjacent solar cell panel 1 . In this embodiment, the functional element area 102 is a rectangular area smaller than the entirety of the substrate 10 . A plurality of first fixing holes 1011 and a plurality of second fixing holes 1012 are respectively formed on two parallel sides of the peripheral fixing area 101 (the positions are indicated by dotted lines in FIG. 2 ). In this embodiment, the number of the first fixing holes 1011 and the number of the second fixing holes 1012 are both four. In practice, the number of them can be designed according to actual needs. The first fixing holes 1011 and the second fixing holes 1012 are used to pass through nails or screws, so as to fix the solar cell panel 1 to the drilled part of the roof panel. In other embodiments, the aforementioned two parallel sides may not have fixing holes, and the solar cell panel 1 can be nailed to the roof plate by directly nailing through the peripheral fixing area 101 with nails.

The first adhesive layer 11 is laid over the functional element area 102 and is made of ethylene-vinyl acetate copolymer (Ethylene-Vinyl Acetate, EVA). In practice, the first adhesive layer 11 can be made of an EVA film of a suitable size, which is heated and pressed under certain conditions to induce melting, bonding and cross-linking and solidification, so as to bond the substrate 10 and the insulating layer 12 . EVA is non-adhesive and anti-adhesive at room temperature. After curing, the EVA film becomes completely transparent and has a very high light transmittance. The cured EVA film is elastic, has the advantages of heat resistance, moisture resistance, low temperature resistance and impact resistance, has good adhesion to metal glass and plastic, and can maintain the overall stability of the solar panel 1 (not easy to crack). Considering environmental protection factors, the material of the first adhesive layer 11 can also be polyolefin elastomers (Polyolefin Elastomers, POE), which also has similar characteristics to EVA.

The insulating layer 12 is located above the first adhesive layer 11 and is bonded to the substrate 10 through the first adhesive layer 11 . The purpose of the insulating layer 12 is to electrically insulate the solar cell module layer 14 bonded thereon from the substrate 10 , so as to prevent the electric energy generated in the solar cell module layer 14 from leaking into the substrate 10 and the background environment. In this embodiment, the insulating layer 12 is made of polyvinyl fluoride (PVF), specifically a PVF film of suitable size, which is placed on the first adhesive layer 11 . PVF film has high resistance and durability to sunlight, chemical solvents, acid and alkali corrosion, moisture and oxidation, and is a suitable electrical insulating material. In addition, the insulating layer 12 can also be made of polyethylene terephthalate (Polyethylene Terephthalate, PET), which is actually a PET film of suitable size.

The second bonding layer 13 is laid on the insulating layer 12 and is used for bonding the solar cell module layer 14 to the structure below itself. The materials and application methods of the second adhesive layer 13 are the same as those of the first adhesive layer 11 , which will not be repeated here.

The solar cell module layer 14 includes at least one solar cell 141 , and the at least one solar cell 141 outputs electrical energy converted from solar energy through at least two electrode wires. In this embodiment, the solar cell module layer 14 is formed by using two solar cells 141 in parallel with each other. According to the spirit of the present invention, the two solar cells 141 may also be connected in series with each other. Furthermore, the number of solar cells 141 can be greater, electrically connected to each other in series, parallel or parallel series designs. Of course, the solar cell module layer 14 may only include one solar cell 141 , and there is no connection problem between the solar cells 141 . Like a general solar cell, the solar cell 141 in the present invention also has an upper electrode line 1411 on the upper side (shown as a wide line on a white background in FIGS. 1 and 2 ), which belongs to the cathode; and a lower electrode line 1412 on the lower side (Fig. 1 and Fig. 2 are drawn with a wide line on a black background), belonging to the anode, there are a total of 4 electrode lines. However, the simplest case is one solar cell 141 and one upper electrode line 1411 and one lower electrode line 1412 . The solar cell module layer 14 is located above the second adhesive layer 13 , and is bonded to the insulating layer 12 by the second adhesive layer 13 , thereby also being combined with the structure below the insulating layer 12 . The four electrode lines are not limited in the functional element area 102, but extend to the peripheral fixing area 101, as shown in FIG. 1 . According to the present invention, if the number of solar cells 141 is two or more, the electrode lines of the same electrode can be connected to form an electrode bus line. As shown in FIG. 1, the two upper electrode lines 1411 are connected to form an upper electrode bus 1411a, and the two lower electrode lines 1412 are connected to form a lower electrode bus 1412a. The function of the electrode bus is to connect the electrode lines of the same electrode, so as to facilitate the use of a single electrode. The interface is electrically connected with other solar panels 1 . When the solar cell panel 1 is not fixed, the extending ends of the upper electrode bus line 1411a and the lower electrode bus line 1412a can be movably and flatly attached to the peripheral fixing area 101 . When the solar cell panel 1 is fixed on the roof panel to be electrically connected with other solar cell panels 1 , the extending ends of the upper electrode bus line 1411 a and the lower electrode bus line 1412 a can be bent to the outside of the peripheral fixing area 101 . Regarding the way of bending and electrical connection, please refer to FIG. 3 , which shows the way of electrical connection between two solar cell panels 1 . The extension ends of the upper electrode bus line 1411a and the lower electrode bus line 1412a of the two solar cell panels 1 are bent as shown in FIG. 3 . The extended ends of the upper electrode bus lines 1411a are overlapped to form an electrical connection. In order to maintain the electrical connection between the extension ends of the two electrode bus lines and prevent the intrusion of external moisture, a waterproof conductive tape 30 can be used to stick to the overlap. In addition, if the distance between the extension ends is too long, for example, the solar cell panel 1 is to be electrically connected across the roof, directly use the waterproof conductive tape 30 to connect the extension ends of the upper electrode bus 1411a and the lower electrode bus 1412a, or use conductive strips to connect the two electrode buses After the extension ends, the conductive strips and the extension ends of the upper electrode bus line 1411a and the lower electrode bus line 1412a are adhered with the waterproof conductive tape 30 .

The third adhesive layer 15 is laid over the solar cell module layer 14 and partially adhered to the second adhesive layer 13 , and is used for adhering the brightness enhancement film layer 16 to the structure below itself. The materials and application methods of the third adhesive layer 15 are the same as those of the first adhesive layer 11 , which will not be repeated here.

The brightness enhancement film layer 16 is preferably made of PET to form a soft and elastic film layer. The brightness enhancement film layer 16 is located above the third adhesive layer 15 , and is bonded to the solar cell module layer 14 through the third adhesive layer 15 . The upper surface of the brightness enhancement film layer 16 has a plurality of microstructures 161. The microstructures 161 look like small spikes in the cross-sectional direction. In the vertical cross-sectional direction, each small spike forms a prism and is connected to each other. . The specific role will be explained later.

The fourth bonding layer 17 is laid over the brightness enhancement film layer 16 and is used for bonding the light-transmitting fluorine element-containing film layer 18 to the structure below itself. The materials and application methods of the fourth adhesive layer 17 are the same as those of the first adhesive layer 11 , which will not be repeated here.

The light-transmitting fluorine-containing thin film layer 18 is a technical component of the solar cell panel 1 that is exposed to external light. In practice, high-transmitting Teflon can be used as a material. The upper surface of the light-transmitting fluorine element-containing thin film layer 18 has a plurality of three-dimensional corrugated light-enhancing structures 181 located above the fourth adhesive layer 17 , and is bonded to the brightness-enhancing film layer 16 by the fourth adhesive layer 17 . The cross-section of the light-enhancing structure 181 in any direction other than the horizontal direction can obtain a continuous “wave crest-valley” cross-section edge segment; and the top-view direction of the three-dimensional corrugated shape of the light-enhancing structure 181 is formed as continuous adjacent circles on a plane, each circle The shape has a radius of curvature not greater than 1 mm.

Please refer to FIG. 4 , which illustrates the method and effect of the micro-chip structure 161 and the light enhancement structure 181 in changing the light path. In FIG. 4, the optical paths of the incident light are indicated by single or consecutive arrows. Due to the three-dimensional corrugated shape of the light enhancement structure 181, external multi-directional light rays can be guided into it. For example, on a light path L1, the light is refracted and directed to the light-transmitting fluorine-containing film layer 18; on a light path L2, the light enters the light-transmitting fluorine-containing film layer 18 after one refraction and one total reflection; On a light path L3, because the incident angle of the light is perpendicular to the incident surface, the light does not change its direction and directly enters the light-transmitting fluorine-containing thin film layer 18 . Based on the above three light paths, the light outside the light-transmitting fluorine element-containing thin film layer 18 can enter into the light-transmitting fluorine element-containing thin film layer 18 in a larger amount. Furthermore, the microstructure 161 can change the light path of the light from the light-transmitting fluorine element-containing thin film layer 18 to be more toward the vertical direction of the two solar cells 141 and incident on one of the two solar cells 141 . Referring back to FIG. 4 , if the light in the fourth adhesive layer 17 follows a light path L4 , it may enter the solar cell 141 without changing its direction; if the original direction of the light deviates from the vertical direction of the solar cell 141 , the light may follow a light path L5, its traveling direction is corrected to be closer to the vertical direction of the solar cell 141, and directed toward the solar cell 141; if the original direction of the light is more deviated from the vertical direction of the solar cell 141, the light can follow a light path L6, and its traveling direction is corrected to be closer to the vertical direction of the solar cell 141. The vertical direction of the solar cell 141 is directed toward the solar cell 141 . However, the light path L6 still has a larger incident angle to the solar cell 141 than the light path L5. The larger the incident angle, the less energy the solar cell 141 can convert. However, if there is no microchip structure 161 , the incident angle of many light rays will be large, thereby reducing the photoelectric conversion efficiency of the solar cell 141 .

The present invention also discloses a construction method for laying a solar cell panel 1 for a pitched roof. For a better understanding of the construction method, please refer to Figure 5 and Figure 6 at the same time. FIG. 5 shows the laying operation of the solar cell panel 1 , and FIG. 6 is a flow chart of the construction method of the solar cell panel 1 . In FIG. 5 , a part of the structure of the pitched roof 2 includes a roof panel 21 and a support system 22 for supporting the roof panel 21 . First, the first step of this construction method is to lay a layer of waterproof layer 23 on the roof panel 21 of the pitched roof 2 (S01). The waterproof layer 23 can use waterproof linoleum. Next, the second step is to lay several solar cell panels, and arrange the side where the first fixing holes 1011 are located in a row along a reference side of the roof panel 21 ( S02 ). Here, since FIG. 5 is a schematic cross-sectional view of the pitched roof 2 , only one solar cell panel can be shown in each row. For the convenience of description, the solar cell panels in the first row are represented by the first row of solar cell panels 1A. A datum edge is defined as being parallel to a specific horizontal top. For example, the reference edge is 3 meters above the ground, that is, the position A in FIG. 5 . In this case, the lower edges of the first row of solar panels 1A are aligned along a virtual straight line at the vertical position A, and the solar panels are installed from below the roof panel 21 (longitudinal construction). The definition of the reference edge can also be the above-mentioned specific horizontal high-rise perpendicular to the roof panel 21 , for example, the horizontal high-rise 3 meters above the vertical ground is a straight line parallel to the waterproof layer 23 in FIG. 5 . At this time, the solar cell panel is constructed and installed horizontally from one side of the roof panel 21 to the other side (horizontal construction).

Next, the third step is to use nails or screws to fix the first row of solar cell panels 1A on the roof panel 21 through the first fixing holes 1011 and the waterproof layer 23 ( S03 ). In this embodiment, nails 24 are used to nail the first row of solar cell panels 1A to the roof panel 21 through the first fixing holes 1011 and the waterproof layer 23 . The fourth step: continue the previous row of solar panels (this time refers to the first row of solar panels 1A), continue to lay several solar panels into a new row, and fix the first row of the newly laid solar panels. The holes 1011 are sequentially aligned with the second fixing holes 1012 of the solar cell panels in the previous row ( S04 ). For convenience of description, the newly laid solar panels are referred to as the second row of solar panels 1B. Next, the fifth step is to use nails 24 (or screws) to fix the second row of solar cell panels 1B on the roof panel 21 through the first fixing holes 1011 , the corresponding second fixing holes 1012 and the waterproof layer 23 ( S05).

Step 6: Repeat steps S04 and S05 until a predetermined area of the roof panel 21 is covered by the solar cell panels ( S06 ). As can be seen from FIG. 5 , the third row of solar panels 1C is laid in succession with the second row of solar panels 1B, and the fixing method is also by nails 24 through the first fixing holes 1011, the corresponding second fixing holes 1012 and waterproofing. Layer 23 is nailed to roof panel 21 . The number of rows of solar panels to be used and the number of solar panels in each row depend on the size and shape of the preset area. In addition, whether it is vertical construction or horizontal construction, all the solar panels are installed on the roof panel 21 obliquely, and the rainwater can flow along the upper solar panels to the lower solar panels, without the Penetration from the nails 24 to the roof panel 21 via the waterproof layer 23 . Finally, the seventh step is to connect the electrode wires or electrode bus lines of two adjacent solar cell panels with a waterproof conductive tape according to the manner in which the positive electrodes are electrically connected to the negative electrodes ( S07 ). Step S07 shows one of the advantages of the present invention: the electrical connection between the solar panels can be simply implemented with a waterproof conductive tape, which is not only waterproof, but also easy to apply.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, The protection scope of the present invention shall be determined by the scope of the appended patent application.

1: Solar panels 1A: First row of solar panels 1B: Second row of solar panels 1C: Third row of solar panels 10: Substrate 101: Peripheral fixed area 1011: The first fixing hole 1012: Second fixing hole 102: Functional element area 11: The first adhesive layer 12: Insulation layer 13: The second adhesive layer 14: Solar cell module layer 141: Solar Cells 1411: Upper electrode wire 1411a: Upper electrode bus 1412: Lower electrode wire 1412a: Lower electrode bus 15: The third bonding layer 16: Brightness-enhancing film layer 161: Microstructure 17: Fourth bonding layer 18: Light-transmitting fluorine-containing element film layer 181: Enhancement structure 2: sloping roof 21: Roof Slabs 22: Support system 23: Waterproof layer 24: Nails 30: Waterproof conductive tape A: Location L1: Light Path L2: Light Path L3: Light Path L4: Light Path L5: Light Path L6: Light Path

1 is a schematic top view of a solar cell panel for laying a pitched roof according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of the solar cell panel along the line AA', and FIG. For the electrical connection method, Figure 4 illustrates the method and effect of the micro-chip structure and the light enhancement structure in changing the light path, Figure 5 illustrates the laying operation of the solar panel, and Figure 6 is a flow chart of the construction method of the solar panel.

1: Solar panels

10: Substrate

101: Peripheral fixed area

1011: The first fixing hole

1012: Second fixing hole

102: Functional element area

11: The first adhesive layer

12: Insulation layer

13: The second adhesive layer

14: Solar cell module layer

141: Solar Cells

1411: Upper electrode wire

1412: Lower electrode wire

15: The third bonding layer

16: Brightness-enhancing film layer

161: Microstructure

17: Fourth bonding layer

18: Light-transmitting fluorine-containing element film layer

181: Enhancement structure

Claims (14)

A solar panel for laying sloping roofs, comprising: a substrate, including a peripheral fixing area and a functional element area; a first adhesive layer, laid over the functional element area; an insulating layer located above the first adhesive layer and bonded to the substrate through the first adhesive layer; a second adhesive layer, laid on the insulating layer; A solar cell module layer including at least one solar cell located above the second adhesive layer and bonded to the insulating layer through the second adhesive layer, wherein the at least one solar cell converts solar energy through at least two electrode lines power output, the at least two electrode wires extend to the peripheral fixed area; a third adhesive layer, laid over the solar cell module layer and partially bonded with the second adhesive layer; a brightness-enhancing film layer, the upper surface of which has a plurality of microstructures, is located above the third adhesive layer, and is bonded to the solar cell module layer through the third adhesive layer; a fourth adhesive layer laid over the brightness enhancement film layer; and A light-transmitting fluorine-containing element film layer, the upper surface of which has a plurality of three-dimensional corrugated light-enhancing structures, is located above the fourth adhesive layer, and is bonded to the brightness-enhancing film layer by the fourth adhesive layer, Wherein the light enhancement structure guides multi-directional light from the outside into it, and the microstructure changes the light path of the light from the light-transmitting fluorine element-containing thin film layer to make it more toward the vertical direction of the at least one solar cell, incident on the at least one solar cell. The solar cell panel for laying pitched roofs according to claim 1, wherein a plurality of first fixing holes and a plurality of second fixing holes are respectively formed on two parallel sides of the peripheral fixing area. The solar cell panel for laying sloping roofs according to claim 1, wherein the material of the substrate is varnished stainless steel, stainless steel, varnished alloy steel plate, alloy steel plate, aluminum, aluminum alloy or plastic. The solar cell panel for laying pitched roofs according to claim 1, wherein the material of the first adhesive layer is ethylene-vinyl acetate copolymer (Ethylene-Vinyl Acetate, EVA) or polyolefin elastomer (Polyolefin Elastomers, POE) . The solar cell panel for laying pitched roofs according to claim 1, wherein the material of the second adhesive layer is ethylene vinyl acetate copolymer or polyene elastomer. The solar cell panel for laying pitched roofs according to claim 1, wherein the material of the third adhesive layer is ethylene vinyl acetate copolymer or polyene elastomer. The solar cell panel for laying pitched roofs according to claim 1, wherein the material of the fourth adhesive layer is ethylene vinyl acetate copolymer or polyene elastomer. The solar cell panel for laying pitched roofs according to claim 1, wherein the insulating layer is made of polyvinyl fluoride (PVF) or polyethylene terephthalate (PET). The solar cell panel for laying pitched roofs according to claim 1, wherein if the number of the solar cells is two or more, the electrode lines of the same electrodes are connected to form an electrode bus line. The solar cell panel for laying a pitched roof as claimed in claim 1, wherein the three-dimensional corrugated shape of the light enhancement structure is formed into continuous adjacent circles in a plane, and each circle has a radius of curvature not greater than 1 mm . The solar cell panel for laying pitched roofs according to claim 1, wherein the substrate is square or rectangular. A construction method for laying a solar cell panel for a pitched roof as described in any one of claims 2 to 10, comprising the steps of: a) Lay a waterproof layer on a roof slab of a pitched roof; b) Lay a number of solar panels, and arrange the side edge of the first fixing hole in a row along a reference edge of the roof panel; c) Use nails or screws to fix the solar panels on the roof panel through the first fixing holes and the waterproof layer; d) Continue the previous row of solar panels, continue to lay several solar panels into a new row, and align the first fixing holes of the newly laid solar panels with the second fixing holes of the previous row of solar panels in sequence ; e) Use nails or screws to fix the solar panels on the roof panel through the first fixing holes, the corresponding second fixing holes and the waterproof layer; f) repeating steps d) and e) until a predetermined area of the roof panel is covered by the solar panels; and g) Connect the electrode wires or electrode bus lines of two adjacent solar panels with waterproof conductive tape according to the way that the positive electrode is electrically connected to the negative electrode. The construction method for laying a solar cell panel for a pitched roof as claimed in claim 12, wherein the reference edge is parallel to a specific horizontal high-rise or perpendicular to the specific horizontal high-rise. The construction method for laying a solar cell panel for a pitched roof according to claim 12, wherein the waterproof layer is a waterproof linoleum.

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