Width-adjustable building photovoltaic integrated roof panel and construction method thereof

Abstract

The invention relates to the field of building roofs, and particularly discloses a width-adjustable building photovoltaic integrated roof panel and a construction method thereof.The width-adjustable building photovoltaic integrated roof panel comprises a panel unit comprising a base plate and a thermoplastic plate, one end of the panel unit is fixed in a hot melting connection mode, and the fixing flexibility of the adjacent panel units is improved; the photovoltaic roof panel is simple in structure and suitable for installation of photovoltaic panels of different specifications and sizes, customized cutting needed during installation of a traditional roof panel is replaced, the production cost and the installation difficulty of the photovoltaic roof panel are reduced, meanwhile, the multiple positioning strips arranged between the protruding parts and the clamping parts are arranged, the distance between every two adjacent panel units can be rapidly positioned, and the installation efficiency is improved. The positioning strips and the clamping strips are matched to improve the welding stability of the adjacent panel units, the hot melting assembly quality is improved, in addition, the supporting part arranged in the middle of the protruding part is arranged, the supporting stability of the protruding part on the photovoltaic panel is further improved, and the drainage capacity and the thermal expansion and cold contraction resisting capacity are improved.

Description

Technical Field

[0001] The present invention relates to the field of building roofs, and more particularly to a building photovoltaic integrated roof panel with adjustable width and a construction method thereof. Background Art

[0002] Building integrated photovoltaic roof panels (BIPV) are an innovative building material that deeply integrates solar photovoltaic power generation functions with building roof structures. Through modular design, photovoltaic modules are directly integrated into the roof panel system, combining multiple functions such as power generation, waterproofing, heat insulation and structural bearing.

[0003] When installing existing roof panels, if the size of the roof panels does not match the photovoltaic panels, they need to be manually cut and adjusted. This not only generates a large amount of scrap, but also significantly reduces construction efficiency due to time-consuming on-site processing, making it difficult to adapt to large-scale production needs. Summary of the Invention

[0004] 1. Technical problems to be solved

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a building photovoltaic integrated roof panel with adjustable width and a construction method thereof, which can achieve rapid adaptation of the specifications of the roof panel and photovoltaic panels.

[0006] 2. Technical solution

[0007] To solve the above problems, the present invention adopts the following technical solutions.

[0008] A width-adjustable photovoltaic integrated roof panel for buildings comprises a plurality of panel units, each having a snap-fit ​​portion at one end and a raised portion at the other end of the panel unit, away from the snap-fit ​​portion. The snap-fit ​​portion is snapped with a snap-fit ​​strip, and the snap-fit ​​strips of adjacent panel units are mounted within the raised portions of the adjacent panel units. The snap-fit ​​strips are fixedly connected to the purlins of the building via self-tapping screws.

[0009] The panel unit includes a substrate and a thermoplastic plate fixed to the upper end of the substrate. The length of the thermoplastic plate at one end of the panel unit close to the raised portion is greater than the length of the substrate. The end of the panel unit close to the raised portion is fixedly connected to the part of the adjacent panel unit located between the clamping portion and the raised portion by hot melt fixing, and a photovoltaic panel is fixedly connected to the upper end of the raised portion.

[0010] As a further improvement of the present invention, a portion of the panel unit located between the clamping portion and the raised portion is fixedly connected with a plurality of equally spaced positioning strips.

[0011] As a further improvement of the present invention, a support portion bent inward is provided in the middle of the raised portion, and the photovoltaic panel and the raised portion are fixed at both sides of the support portion.

[0012] As a further improvement of the present invention, the base plate is made of aluminum-zinc-coated steel plate, the thermoplastic plate is made of thermoplastic polyolefin elastomer or polyvinyl chloride, the height of the positioning bar is equal to the height of the base plate, and the positioning bar and the thermoplastic plate are integrally formed.

[0013] As a further improvement of the present invention, the snap-in strip is provided with a slot opening downward, the snap-in portion is adapted to the slot of the snap-in strip, the snap-in strip is made of aluminum alloy, and its surface is coated with a polyurethane wear-resistant coating.

[0014] As a further improvement of the present invention, the cross section of the raised portion is an isosceles trapezoid.

[0015] As a further improvement of the present invention, the support portion and the raised portion are bent and formed as one piece, and the cross section thereof is U-shaped or inverted isosceles trapezoidal.

[0016] A construction method for a building photovoltaic integrated roof panel with adjustable width comprises the following steps:

[0017] Step 1: Based on the size of the photovoltaic panels and panel units, the installation positions of the multiple panel units are designed and determined, and the clip strips are fixed to the house purlins with self-tapping screws based on the installation positions of the panel units;

[0018] Step 2: clamping the plurality of panel units into corresponding clamping strips, and making the raised portions of adjacent panel units cover the outside of the clamping portions of adjacent panel units;

[0019] Step 3: Using a hot air welding machine to heat-seal the adjacent panel units at their abutting points, forming welded portions at the abutting points of the adjacent panel units;

[0020] Step 4: Fix the photovoltaic panels on the raised parts of adjacent panel units.

[0021] 3. Beneficial effects

[0022] Compared with the prior art, the advantages of the present invention are:

[0023] (1) The present invention uses a panel unit including a substrate and a thermoplastic plate, so that one end of the panel unit is fixed by hot-melt connection, thereby improving the flexibility of fixing adjacent panel units, facilitating the adjustment of the relative distance between adjacent panel units, and adapting to the installation of photovoltaic panels of different specifications and sizes. It replaces the traditional roof panels that need to be customized during installation, thereby reducing the production cost and installation difficulty of photovoltaic roof panels.

[0024] (2) The present invention provides a plurality of positioning strips arranged between the raised portion and the clamping portion, thereby facilitating rapid positioning of the spacing between adjacent panel units and further improving the accuracy of installation. In addition, the positioning strips and the clamping strips cooperate to improve the stability of adjacent panel units during welding, thereby improving the assembly quality.

[0025] (3) The present invention further improves the stability of the bulge in supporting the photovoltaic panel by providing a support portion arranged in the middle of the bulge, and at the same time improves the drainage capacity and the resistance to thermal expansion and contraction.

[0026] (4) The present invention provides a raised portion on the panel unit to facilitate covering and shielding the snap-on strips and self-tapping screws, thereby improving the waterproofness of the panel unit and the connection. The raised portion is used to support the installation of the photovoltaic panel, so that the bottom of the photovoltaic panel is hollowed out, which facilitates airflow through the hollow cavity and improves the heat dissipation and drainage performance of the photovoltaic roof panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention in the first embodiment;

[0028] Figure 2 is a schematic diagram of the three-dimensional structure of the panel unit in the first embodiment;

[0029] Figure 3 This is a schematic diagram of a transverse cross-sectional structure of the present invention in the first embodiment;

[0030] Figure 4 for Figure 3 Schematic diagram of the enlarged structure at A in the middle;

[0031] Figure 5 is a schematic diagram of the three-dimensional structure of the panel unit in the second embodiment;

[0032] Figure 6 is a schematic diagram of the three-dimensional structure of the present invention in the second embodiment;

[0033] Figure 7 for Figure 6 Schematic diagram of the enlarged structure at point B in the middle.

[0034] Explanation of the numbers in the figure: 1. Panel unit; 101. Snap-fitting part; 102. Raised part; 103. Positioning strip; 104. Base plate; 105. Thermoplastic plate; 106. Welding part; 107. Support part; 2. Snap-fitting strip; 3. Self-tapping screw; 4. House purlin; 5. Photovoltaic panel. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention in specific circumstances.

[0038] See also Figures 1-4 In a first embodiment of the present invention, a width-adjustable photovoltaic integrated roof panel for buildings includes a plurality of panel units 1. A clamping portion 101 is provided at one end of each panel unit 1. A raised portion 102 is provided at the other end of each panel unit, away from the clamping portion 101. A clamping strip 2 is clamped to the clamping portion 101. The clamping strips 2 of adjacent panel units 1 are mounted within the raised portions 102 of the adjacent panel units 1. The clamping strips 2 are fixedly connected to the building purlins 4 via self-tapping screws 3.

[0039] See also Figure 2 and Figure 3 The panel unit 1 includes a substrate 104 and a thermoplastic plate 105 fixed to the upper end of the substrate 104. The length of the thermoplastic plate 105 at one end of the panel unit 1 close to the raised portion 102 is greater than the length of the substrate 104. The end of the panel unit 1 close to the raised portion 102 is fixedly connected to the portion of the adjacent panel unit 1 located between the clamping portion 101 and the raised portion 102 by hot melt fixing. The upper end of the raised portion 102 is fixedly connected to the photovoltaic panel 5.

[0040] The construction process includes the following steps:

[0041] Step 1: Based on the size of the photovoltaic panels 5 and the panel units 1, the installation positions of the multiple panel units 1 are designed and determined. Based on the installation positions of the panel units 1, the clip strips 2 are fixed to the house purlins 4 using self-tapping screws 3;

[0042] Step 2: snap multiple panel units 1 into corresponding snap-fit ​​strips 2, and make the raised portions 102 of adjacent panel units 1 cover the outside of the snap-fit ​​portions 101 of adjacent panel units 1;

[0043] Step 3: Using a hot air welding machine, heat-seal and fix the abutting portions of the adjacent panel units 1 to form a welded portion 106 at the abutting portions of the adjacent panel units 1;

[0044] Specifically, when the hot air welder performs heat-melting processing on adjacent roof panels 1, the welding temperature is 200 degrees Celsius and the pressure is 0.8 MPa.

[0045] Step 4: Fix the photovoltaic panel 5 on the raised portion 102 of the adjacent panel unit 1.

[0046] It should be noted that there are many ways to fix the photovoltaic panel 5 and the raised portion 102, including bolt fixing and adhesive fixing, which are existing technologies and will not be described in detail in this application.

[0047] Compared with traditional rooftop photovoltaic installation panels, the present invention uses a panel unit 1 including a substrate 104 and a thermoplastic board 105, so that one end of the panel unit 1 is fixed by a hot melt connection, thereby improving the flexibility of fixing adjacent panel units 1, facilitating the adjustment of the relative distance between adjacent panel units 1, and adapting to the installation of photovoltaic panels 5 of different specifications and sizes, replacing the traditional roof panels that need to be customized during installation, thereby reducing the production cost and installation difficulty of photovoltaic roof panels. At the same time, the panel unit 1 is provided with a raised portion 102, which is convenient for covering and shielding the snap-on strip 2 and the self-tapping screw 3, thereby improving the waterproofness of the panel unit 1 and the connection. In addition, the raised portion 102 is used to support the installation of the photovoltaic panel 5, so that the bottom of the photovoltaic panel 5 is hollowed out, which facilitates airflow through the hollow cavity and improves the heat dissipation and drainage performance of the photovoltaic roof panel; in addition, the raised portion 102 enables the photovoltaic roof panel to have better bearing capacity and impact resistance.

[0048] In this embodiment, the substrate 104 is made of galvanized steel plate, and the thermoplastic plate 105 is made of thermoplastic polyolefin elastomer or polyvinyl chloride.

[0049] Specifically, the substrate 104 made of aluminum-zinc-coated steel plate has good strength and toughness, and the heating of the thermoplastic plate 105 facilitates rapid hot-melt fixing construction. In addition, the thermoplastic plate 105 made of thermoplastic polyolefin elastomer or polyvinyl chloride has good waterproof properties, which facilitates the formation of an overall waterproof layer on the photovoltaic roof panel.

[0050] See also Figure 2 and Figure 4The portion of the panel unit 1 located between the snap-fit ​​portion 101 and the raised portion 102 is fixedly connected with a plurality of equally spaced positioning bars 103 . The height of the positioning bars 103 is equal to that of the base plate 104 . The positioning bars 103 are integrally formed with the thermoplastic plate 105 .

[0051] Specifically, when splicing and installing adjacent panel units 1, the positioning strips 103 are used to facilitate determining the relative distance between adjacent panel units 1. During splicing, the side wall of the substrate 104 of the panel unit 1 located on the upper side abuts against the side wall of the positioning strip 103 of the panel unit 1 located on the lower side. At this time, one end of the panel unit 1 is clamped by the clamping strip 2, and the other end is abutted by the positioning strip 103, so that the panel unit 1 to be hot-melt fixed is clamped and fixed, thereby improving the stability of the hot-melt fixing operation, reducing the position offset of adjacent panel units 1 during hot-melt construction, and improving the quality of hot-melt construction.

[0052] See also Figure 4 The card strip 2 is provided with a card slot with an opening facing downward, and the card portion 101 is adapted to the card slot of the card strip 2 .

[0053] In this embodiment, the clamping strip 2 is made of aluminum alloy, and its surface is coated with a polyurethane wear-resistant coating.

[0054] Specifically, the service life of the connecting strip 2 is increased.

[0055] See also Figure 2 The cross section of the raised portion 102 is an isosceles trapezoid.

[0056] Specifically, the raised portion 102 with an isosceles trapezoidal cross section is convenient for covering the clamping strip 2 and, at the same time, is convenient for supporting and fixing the photovoltaic panel 5 .

[0057] In the second embodiment of the present invention, see Figures 5-7 A width-adjustable photovoltaic integrated roof panel, wherein an inwardly bent support portion 107 is provided in the middle of the raised portion 102 , and the fixed positions of the photovoltaic panel 5 and the raised portion 102 are located on both sides of the support portion 107 .

[0058] Specifically, the support portion 107 is arranged in the middle position of the raised portion 102 to provide a load capacity for the raised portion 102. At the same time, the inward-bent support portion 107 facilitates the discharge of rainwater discharged from the edge of the photovoltaic panel 5, thereby improving the load-bearing capacity and drainage capacity of the photovoltaic roof panel. In addition, when the photovoltaic roof panel expands and contracts due to heat and is impacted, the support portion 107 undergoes elastic deformation, thereby improving the environmental adaptability and impact resistance of the photovoltaic roof panel.

[0059] See also Figure 5 The support portion 107 and the raised portion 102 are integrally bent and formed, and their cross-section is U-shaped or inverted isosceles trapezoidal.

[0060] The above description is only the preferred embodiment of the present application; however, the protection scope of the present application is not limited to this. Any person skilled in the art, according to the technical solution and the improved concept of the present application, can make equivalent replacement or change within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A width-adjustable photovoltaic integrated roof panel, characterized in that: The invention comprises a plurality of panel units (1), wherein one end of each panel unit (1) is provided with a clamping portion (101), and the other end of each panel unit away from the clamping portion (101) is provided with a raised portion (102), wherein the clamping portion (101) is clamped with a clamping strip (2), and the clamping strips (2) of adjacent panel units (1) are installed in the raised portions (102) of the adjacent panel units (1), and the clamping strips (2) are fixedly connected to the purlins (4) of the house via self-tapping screws (3); The panel unit (1) comprises a substrate (104) and a thermoplastic plate (105) fixed to the upper end of the substrate (104); the length of the thermoplastic plate (105) at one end of the panel unit (1) close to the raised portion (102) is greater than the length of the substrate (104); the end of the panel unit (1) close to the raised portion (102) is fixedly connected to the portion of the adjacent panel unit (1) located between the clamping portion (101) and the raised portion (102) by hot-melt fixing; and the upper end of the raised portion (102) is fixedly connected to a photovoltaic panel (5).

2. The width-adjustable photovoltaic integrated roof panel according to claim 1, characterized in that: The portion of the panel unit (1) located between the clamping portion (101) and the raised portion (102) is fixedly connected to a plurality of equally spaced positioning strips (103).

3. The width-adjustable photovoltaic integrated roof panel according to claim 2, characterized in that: An inwardly bent support portion (107) is provided in the middle of the raised portion (102), and the fixed positions of the photovoltaic panel (5) and the raised portion (102) are located on both sides of the support portion (107).

4. The width-adjustable photovoltaic integrated roof panel according to claim 2, characterized in that: The base plate (104) is made of galvanized steel plate, the thermoplastic plate (105) is made of thermoplastic polyolefin elastomer or polyvinyl chloride, the height of the positioning bar (103) is equal to the height of the base plate (104), and the positioning bar (103) and the thermoplastic plate (105) are integrally formed.

5. The width-adjustable building photovoltaic integrated roof panel according to claim 1, characterized in that: The snap-in strip (2) is provided with a snap-in slot with an opening facing downwards, and the snap-in portion (101) is adapted to the snap-in slot of the snap-in strip (2). The snap-in strip (2) is made of an aluminum alloy material, and its surface is coated with a polyurethane wear-resistant coating.

6. The width-adjustable building photovoltaic integrated roof panel according to claim 1, characterized in that: The raised portion (102) has an isosceles trapezoidal cross section.

7. The width-adjustable building photovoltaic integrated roof panel according to claim 3, characterized in that: The support portion (107) and the raised portion (102) are integrally bent and formed, and their cross-section is U-shaped or inverted isosceles trapezoidal.

8. A construction method for the width-adjustable photovoltaic integrated roof panel according to claim 1, characterized in that: The steps include: Step 1: Based on the size of the photovoltaic panel (5) and the panel unit (1), the installation positions of the plurality of panel units (1) are designed and determined, and based on the installation positions of the panel units (1), the clip strips (2) are fixed to the house purlins (4) by self-tapping screws (3); Step 2: clamping the plurality of panel units (1) into the corresponding clamping strips (2), and making the raised portions (102) of adjacent panel units (1) cover the outside of the clamping portions (101) of adjacent panel units (1); Step three, using a hot air welding machine to perform heat-melting fixation on the abutting portions of the adjacent panel units (1), thereby forming a welded portion (106) at the abutting portions of the adjacent panel units (1); Step 4: Fix the photovoltaic panel (5) on the raised portion (102) of the adjacent panel unit (1).

Images