A web tension type building photovoltaic integrated roof panel and an anti-crack construction method thereof

Abstract

The application discloses a web tension type building photovoltaic integrated roof panel and an anti-hidden crack construction method thereof, and relates to the field of photovoltaic integrated roof panels. The web tension type building photovoltaic integrated roof panel and the anti-hidden crack construction method thereof comprise a roof panel unit and a support assembly. The roof panel unit forms a spoon-shaped cross section, and the support assembly is connected with the A end of the roof panel unit. Under wind suction load, the support assembly exerts downward tension on the web, the middle section of the roof panel unit is lifted upward, tension is generated on the A end and the B end of the roof panel unit, and upward tension is generated on the support assembly at the A end. At this time, the support assembly generates reverse tension on the web, so that the wind suction force is converted into downward tension on the web, stress generated on the photovoltaic module installed on the web is avoided, and hidden cracks of the photovoltaic module are caused.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic integrated roof panel technology, specifically to a web-plate tension-type photovoltaic integrated roof panel and its anti-hidden crack construction method. Background Technology

[0002] Photovoltaic integrated roof panels are functional building materials that directly integrate photovoltaic power generation modules into the roof structure of a building.

[0003] Traditional roof panel supports are fixed at the crest of the wave. Under the suction of the wind, the web is pushed upward, causing the web to come into contact with the photovoltaic module. This causes the photovoltaic module to be subjected to bending stress and develop microcracks. Frequent storms, typhoons and other extreme weather also cause the photovoltaic module to be subjected to excessive mechanical stress, thus producing microcracks.

[0004] By placing a sliding bracket on the web, the wind suction force is converted into a downward pulling force. The roof panel is mechanically fixed at end A to resist wind uplift, and fused and sealed at end B. The dual fixing mechanism works together to suppress deformation, thereby avoiding the photovoltaic modules from bearing bending stress and causing microcracks. In order to solve the above problems, this application proposes a web-loaded building photovoltaic integrated roof panel and its anti-microcrack construction method. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a web-supported tension-type building photovoltaic integrated roof panel and its anti-hidden crack construction method. This solves the problem that in traditional roof panels, the support is fixed at the crest of the wave, and the web is pushed upward by wind suction, causing the web to come into contact with the photovoltaic module, resulting in the photovoltaic module bearing bending stress and causing hidden cracks.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a web-loaded tension-type building photovoltaic integrated roof panel, comprising: The roof panel unit is composed of a metal substrate and a polymer composite layer to form a spoon-shaped cross section, with the tail end being end A and the head end being end B. A web is provided on the metal substrate. The bracket assembly is snapped into end A of the roof panel unit. The adjustment unit includes two trapezoidal slide rails, a first adjustment body, and two second adjustment bodies. The first adjustment body slides between the two trapezoidal slide rails, and the first adjustment body and the second adjustment body are connected by bolts. The installation unit includes a lower fixed seat and an upper fixed seat. The lower fixed seat is installed on the first adjusting body, and the upper fixed seat slides relative to the lower fixed seat. The lower fixed seat and the upper fixed seat are located at the lower end and the upper end of the roof panel unit, respectively. The adjustment unit also includes a base and a support frame. The base is installed on the building base by self-tapping screws, and the support frame is fixedly connected to the base. The top of the support frame is fixedly connected to the trapezoidal slide rail, and the base and support frame support the trapezoidal slide rail. The first regulating body includes: The connecting body is Z-shaped and fits against two trapezoidal slide rails; A horizontal extension section is located at the top of the connecting body; The mounting base is perpendicular to the horizontal extension and has an adjustment groove. The adjustment groove is used to install the installation unit and cooperates with the mounting base to support the installation unit. The second regulating body includes: The fitting part is configured in a Z-shape, and the fitting part is fitted to the side of the trapezoidal slide rail away from the connecting body; A horizontal connecting part is provided at the top of the fitting part. The horizontal connecting part and the horizontal extension part are correspondingly provided. Mounting holes are provided on the horizontal connecting part and the horizontal extension part, and fixing bolts are installed in the mounting holes. An arc-shaped fixing part is provided, which is set at the outer end of the fitting part, and a cavity is formed between the fitting part and the arc-shaped fixing part.

[0007] Preferably, the roof panel unit is located above the building base layer, the B end of the adjacent roof panel unit covers the A end of the roof panel unit, the B end of the polymer composite layer has a reserved hot-melt zone for the TPO layer, and the metal substrate and the polymer composite layer are bonded by a thermal bonding process.

[0008] Preferably, the support assembly includes: A mounting bracket is installed at end A of the roof panel unit; Several types of aluminum alloy guide rails are fixedly connected to the fixing frame. The A end of the roof panel unit is provided with a connector, which is embedded in the several types of aluminum alloy guide rails. Penetrating nails are driven into the building base layer and are used to fix several types of aluminum alloy guide rails to the building base layer.

[0009] Preferably, both ends of the lower fixing seat are provided with lower extension portions, both ends of the upper fixing seat are provided with upper extension portions, a lower soft pad is installed above the lower extension portion, and an upper soft pad is installed below the upper extension portion. The lower soft pad and the upper soft pad are arranged correspondingly, the lower soft pad is attached to the bottom end of the roof panel unit, and the upper soft pad is attached to the top end of the roof panel unit.

[0010] Preferably, a photovoltaic bracket is installed on the upper fixed seat, and the photovoltaic bracket has a photovoltaic mounting groove for installing the photovoltaic panel bracket.

[0011] This invention also discloses a construction method for preventing microcracks in web-loaded building photovoltaic integrated roof panels, comprising the following steps: Step S1: Lay the roof panel units on the building base layer so that they are laid flat on the top of the roof; Step S2: Install and fix the bracket assembly to the A end of the roof panel unit by driving through nails on the building base, fix it in the bracket sliding groove, and use a few aluminum alloy guide rails to precisely position and mechanically fix the A end. Step S3: Insert end A of the roof panel unit into the bracket assembly, which can slide longitudinally by ±100mm; Step S4: The adjacent roof panel unit B covers the A end, and the fusion point of the adjacent B ends is moved so that the support assembly is always directly below the web. Step S5: The TPO layer is thermally fused, and adjacent roof panel units form a continuous sealed interface; Step S6: Install the adjustment unit on the building base, and install the installation unit directly below the web plate. Adjust the lower and upper fixing seats on the installation unit to be at the upper and lower ends of the roof panel unit. Step S7: Fix the photovoltaic modules in the photovoltaic mounting groove, with clamp pressure ≤0.15MPa to avoid microcracks caused by compression; Step S8: Adjust the position of the installation unit and each component of the adjustment unit to ensure that a thermal expansion gap of 5-8mm is maintained between adjacent photovoltaic modules.

[0012] Its beneficial effects are as follows: 1. This patent involves placing the support assembly at the web plate position. When frequent extreme weather events such as storms and typhoons occur, under wind suction load, the support assembly applies a downward pulling force to the web plate, causing the middle section of the roof panel unit to be lifted upward. Since the two ends of the roof panel unit are fixed, the roof panel unit deforms as it is lifted upward, generating a pulling force on ends A and B of the roof panel unit. This generates an upward pulling force on the support assembly at end A, which in turn generates a reverse pulling force on the web plate. This transforms the wind suction force into a downward pulling force on the web plate, preventing stress on the photovoltaic modules installed on the web plate and thus avoiding microcracks.

[0013] 2. The roof panel unit is mechanically fixed at end A to resist wind uplift, and the roof panel unit is fused and sealed at end B to jointly suppress the deformation of the roof panel unit, further ensuring the overall stability of the roof panel unit. The installation unit limits the web plate, further strengthening the stability of the roof panel unit and suppressing the deformation of the roof panel unit. At the same time, it avoids deformation of the web plate when the wind is sucked in, ensuring the stability of the photovoltaic modules installed on the web plate.

[0014] 3. The A end of the roof panel unit is mechanically fixed to the building base with the support assembly. The B end of the adjacent roof panel unit is thermally fused with the A end of the roof panel unit. With the mechanical fixing of the A end and the thermal fusion of the B end, the adjacent roof panel units are sealed with zero exposed puncture. By moving the fusion point of the B end, the position of the adjacent roof panel units is adjusted to ensure that the panel width is adapted to the photovoltaic module, so that the fixed support assembly is located on the web and the web is under tension.

[0015] 4. Under wind suction load, the roof panel unit is subjected to upward suction. At this time, the middle section of the roof panel unit deforms upward, resulting in a leftward lateral tension and an upward force at the junction of ends A and B of the roof panel unit. It also generates a leftward lateral tension and an upward force on the web of the adjacent roof panel unit. The connector at end A generates a leftward lateral tension and an upward force on the fixing frame, causing the fixing frame to generate a rightward lateral tension and a downward force on the end of the web at this point. When the middle section of the roof panel unit deforms upward, it generates a rightward lateral tension and an upward force on the web of the roof panel unit. This causes the web to generate a rightward lateral tension and an upward force on the fixing frame at this point, causing the fixing frame to generate a leftward lateral tension and a downward force on the web at this point. The downward force makes the roof panel unit press tightly against the building base, eliminating the bending stress of the components. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the prior art of the present invention; Figure 3 This is a schematic diagram of the installation of the roof panel unit of the present invention; Figure 4 This is a schematic diagram showing the connection between the support assembly and the roof panel unit of the present invention; Figure 5 This is a schematic diagram showing the connection between the adjustment unit and the mounting unit of the present invention; Figure 6 This is a schematic diagram of the adjustment unit structure of the present invention; Figure 7 This is a schematic diagram showing the connection between the first adjustment body and the second adjustment body of the present invention; Figure 8 This is a schematic diagram of the installation unit structure of the present invention; Figure 9This is a schematic diagram of the air intake of the roof panel unit of the present invention; Figure 10 This is a flowchart illustrating the construction process of the photovoltaic integrated roof panel of this invention.

[0018] In the diagram: 1. Roof panel unit; 11. Metal substrate; 12. Polymer composite layer; 13. Web plate; 14. Connector; 2. Building base; 3. Support assembly; 31. Fixing frame; 32. Aluminum alloy guide rail; 33. Through nail; 4. Adjustment unit; 41. Base; 42. Support frame; 43. Trapezoidal slide rail; 44. First adjustment body; 441. Connecting body; 442. Horizontal extension part; 443. Mounting seat; 444. Adjustment groove; 45. Second adjustment body; 451. Fitting part; 452. Horizontal connecting part; 453. Arc-shaped fixing part; 5. Installation unit; 51. Lower fixing seat; 52. Upper fixing seat; 53. Lower extension part; 531. Lower soft pad; 54. Upper extension part; 541. Upper soft pad; 55. Photovoltaic bracket base; 56. Photovoltaic installation groove. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0021] This invention discloses a web-loaded tension-type building photovoltaic integrated roof panel, according to the attached... Figure 1-5 As shown, it includes: The roof panel unit 1 is composed of a metal substrate 11 and a polymer composite layer 12 to form a spoon-shaped cross section, with the tail end of the spoon being end A and the head end being end B. The roof panel unit 1 is located above the building base 2, and the B end of the adjacent roof panel unit 1 covers the A end of the roof panel unit 1. A web 13 is provided on the metal substrate 11. The bracket assembly 3 is located below the web plate 13 and is snapped into end A of the roof panel unit 1A. Adjustment unit 4 includes two trapezoidal slide rails 43, a first adjustment body 44 and two second adjustment bodies 45. The first adjustment body 44 slides between the two trapezoidal slide rails 43, and the second adjustment body 45 fits against the corresponding trapezoidal slide rail 43. The first adjustment body 44 and the second adjustment body 45 are connected by bolts. The mounting unit 5 is mounted on the first adjusting body 44. The mounting unit 5 includes a lower fixing seat 51 and an upper fixing seat 52. The lower fixing seat 51 is mounted on the first adjusting body 44, and the upper fixing seat 52 slides relative to the lower fixing seat 51. The lower fixing seat 51 and the upper fixing seat 52 are located at the lower end and the upper end of the roof panel unit 1, respectively.

[0022] Specifically, the traditional roof panel support is fixed at the crest of the wave. Under the action of wind suction, the web plate 13 is pushed upward, causing the photovoltaic module to bear the stress of the roof panel unit 1 bending and produce hidden cracks. Furthermore, by placing the support assembly 3 at the web plate 13, when frequent extreme weather events such as storms and typhoons occur, the support assembly 3 applies a downward pulling force to the web plate 13 under wind suction load. Specifically, the middle section of the roof panel unit 1 is lifted upwards. Since the two ends of the roof panel unit 1 are fixed, the roof panel unit 1 deforms when it is lifted upwards, generating tension on ends A and B of the roof panel unit 1. This generates an upward tension on the support assembly 3 at end A. At this time, the support assembly 3 generates a reverse tension on the web plate 13, which converts the wind suction force into a downward tension on the web plate 13, thus avoiding stress on the photovoltaic modules installed on the web plate 13 and preventing them from developing microcracks. It is particularly important to emphasize that by mechanically fixing the A end of the roof panel unit 1 to resist wind uplift, and by fusion fixing and sealing the B end of the roof panel unit 1, the deformation of the roof panel unit 1 is suppressed in a coordinated manner, thereby further ensuring the overall stability of the roof panel unit 1. Furthermore, by limiting the web plate 13 through the installation unit 5, the stability of the roof panel unit 1 is further strengthened, the deformation of the roof panel unit 1 is suppressed, and at the same time, the deformation of the web plate 13 is avoided when the wind is sucked in, so as to ensure the stability of the photovoltaic modules installed on the web plate 13. It is particularly important to emphasize that the A end of the roof panel unit 1 is mechanically fixed to the building base 2 with the bracket assembly 3, and the B end of the adjacent roof panel unit 1 is thermally fused with the A end of the roof panel unit 1. With the mechanical fixing of the A end and the thermal fusion of the B end, the adjacent roof panel units 1 are sealed with zero exposed puncture.

[0023] Furthermore, by moving the B-end integration point, the position of the adjacent roof panel unit 1 is adjusted to ensure that the panel width is adapted to the photovoltaic module, so that the fixed support assembly 3 is located on the web 13, thereby enabling the web 13 to be under tension.

[0024] A TPO layer hot-melt zone is reserved at the end of the polymer composite layer 12B, and the metal substrate 11 and the polymer composite layer 12 are bonded together by a thermal bonding process.

[0025] It needs to be disclosed that the trough of the spoon-shaped cross-section is provided with a drainage groove, which is 10-15mm deep and 20-30mm wide.

[0026] The metal substrate 11 is a 0.6-1.0mm aluminum-zinc coated steel sheet, roll-pressed into a spoon-shaped cross section with a crest height of 60mm and a web plate 13 with an inclination angle of 145°. The polymer composite layer 12 is a 1.2-2.0mm TPO layer, with a TPO layer hot-melt zone reserved at end B. The adjacent roof panel unit 1 is fixed and sealed through the TPO layer hot-melt zone. Furthermore, the A end of the spoon-shaped end of the metal substrate 11 is mechanically fixed to the bracket assembly 3 to resist wind blowing, and the B end of the spoon-shaped end of the polymer composite layer 12 is attached to the A end of the spoon-shaped end of the adjacent polymer composite layer 12 to perform hot-melt fusion of TPO layers, thereby fusing, fixing and sealing the adjacent polymer composite layers 12, and completing the fixing of the adjacent roof panel unit 1.

[0027] According to the appendix Figure 4 As shown, the support assembly 3 includes: The fixing bracket 31 is installed at end A of the roof panel unit 1; A type of aluminum alloy guide rail 32 is fixedly connected to the fixing frame 31. A connector 14 is provided at the A end of the roof panel unit 1, and the connector 14 is embedded in the type of aluminum alloy guide rail 32. Penetrating screw 33 is driven into the building base 2. Penetrating screw 33 is used to fix the aluminum alloy guide rail 32 to the building base 2. Penetrating screw 33 is a Ø6.3mm self-tapping screw.

[0028] It is particularly important to note that when frequent storms, typhoons and other extreme weather occur, under wind suction load, the roof panel unit 1 is subjected to an upward suction force. At this time, the middle section of the roof panel unit 1 deforms upward, which generates a leftward lateral tension and an upward force at the junction of end A and end B of the roof panel unit 1. It also generates a leftward lateral tension and an upward force on the web plate 13 on the adjacent roof panel unit 1. The connector 14 connected at end A generates a leftward lateral tension and an upward tension on the fixing frame 31, which in turn generates a rightward lateral tension and a downward tension on the end of the web plate 13 at that location. Furthermore, when the middle section of the roof panel unit 1 deforms upward, a rightward lateral tension and an upward force are generated at the upper web plate 13 of the roof panel unit 1, causing the web plate 13 to generate a rightward tension and an upward tension on the fixed frame 31 connected thereto, and causing the fixed frame 31 to generate a leftward lateral tension and a downward tension on the web plate 13 thereto. Furthermore, the downward pulling force causes the roof panel unit 1 to press tightly against the building base layer 2, eliminating the bending stress of the component.

[0029] According to the appendix Figure 6 and Figure 7As shown, the adjustment unit 4 also includes a base 41 and a support frame 42. The base 41 is installed on the building base 2 by self-tapping screws, and the support frame 42 is fixedly connected to the base 41. The top of the support frame 42 is fixedly connected to the trapezoidal slide rail 43. The base 41 and the support frame 42 support the trapezoidal slide rail 43.

[0030] Specifically disclosed, the support frame 42 and the trapezoidal slide rail 43 are installed on the building base 2 via the base 41. The first adjustment body 44 and the second adjustment body 45 are adjusted on the trapezoidal slide rail 43, thereby adjusting the longitudinal position of the installation unit 5 and the longitudinal position of the photovoltaic panel assembly installed on the installation unit 5.

[0031] The first regulatory body 44 includes: The connecting body 441 is Z-shaped and fits against two trapezoidal slide rails 43; The Z-shaped design ensures that the connecting body 441 slides stably in the trapezoidal slide rail 43; A horizontal extension 442 is provided at the top of the connecting body 441; Mounting base 443 is perpendicular to the horizontal extension 442. Mounting base 443 is provided with adjustment groove 444 for mounting mounting unit 5. Adjustment groove 444 cooperates with mounting base 443 to support mounting unit 5.

[0032] The second regulating body 45 includes: The fitting part 451 is configured as Z-shaped, and the fitting part 451 fits against the side of the trapezoidal slide rail 43 away from the connecting body 441; The Z-shaped design ensures that the fitting part 451 slides stably in the trapezoidal slide rail 43; A horizontal connecting part 452 is provided at the top of the fitting part 451. The horizontal connecting part 452 is provided in correspondence with the horizontal extension part 442. Mounting holes are provided on the horizontal connecting part 452 and the horizontal extension part 442, and fixing bolts are installed in the mounting holes. The arc-shaped fixing part 453 is configured to be arc-shaped and is disposed at the outer end of the fitting part 451, forming a cavity between the fitting part 451 and the arc-shaped fixing part 453.

[0033] Specifically disclosed, when the first adjusting body 44 and the second adjusting body 45 are pulled to slide on the trapezoidal slide rail 43, the mounting unit 5 installed on the first adjusting body 44 moves along the trapezoidal slide rail 43 to adjust the longitudinal position; Furthermore, when the adjustment and installation unit 5 is in a suitable longitudinal position, the horizontal connecting part 452 and the horizontal extension part 442 are pressed against each other by tightening the bolts. At this time, the pressing force causes the connecting body 441 to press against the trapezoidal slide rail 43, and the fitting part 451 to press against the trapezoidal slide rail 43, so as to ensure that the second adjustment body 45 and the first adjustment body 44 are fixed to the trapezoidal slide rail 43. Furthermore, a cavity is provided by the fitting part 451 and the arc-shaped fixing part 453 to allow for deformation space when the fitting part 451 is pressed against the trapezoidal slide rail 43.

[0034] According to the appendix Figure 8 As shown, both ends of the lower fixing seat 51 are provided with lower extension portions 53, and both ends of the upper fixing seat 52 are provided with upper extension portions 54. A lower soft pad 531 is installed above the lower extension portion 53, and an upper soft pad 541 is installed below the upper extension portion 54. The lower soft pad 531 and the upper soft pad 541 are arranged correspondingly. The lower soft pad 531 is attached to the bottom end of the roof panel unit 1, and the upper soft pad 541 is attached to the top end of the roof panel unit 1.

[0035] It is particularly important to emphasize that when installing the installation unit 5, first insert the lower fixing seat 51 into the bottom end of the roof panel unit 1, and at the same time, the lower fixing seat 51 is on the first adjusting body 44. At this time, the lower soft pad 531 is in contact with the bottom of the roof panel unit 1. The mounting hole opened at the bottom end of the lower fixing seat 51 is aligned with the adjusting groove 444 opened on the mounting seat 443, and then the first adjusting body 44 is connected to the installation unit 5 by bolts. The lateral position of the mounting unit 5 can be adjusted by adjusting the lower fixed seat 51 to slide in the adjustment groove 444; At this time, by sliding the upper fixing seat 52 into the lower fixing seat 51, the upper extension 54 is positioned at the upper end of the roof panel unit 1, and the upper soft pad 541 is in contact with the upper end of the roof panel unit 1. When the roof panel unit 1 is subjected to wind suction, the lower fixed seat 51 and the upper fixed seat 52 support the upper web plate 13 of the roof panel unit 1, restricting its deformation. At the same time, the lower soft pad 531 and the upper soft pad 541 protect it and further restrict the movement and deformation of the web plate 13.

[0036] A photovoltaic bracket 55 is installed on the upper fixed base 52. The photovoltaic bracket 55 has a photovoltaic mounting groove 56 for installing the photovoltaic panel bracket.

[0037] The photovoltaic bracket is installed in the photovoltaic mounting groove 56, and then the photovoltaic module is installed on the photovoltaic bracket base 55. When the first adjustment body 44 and the second adjustment body 45 are pulled to slide on the trapezoidal slide rail 43, the installation unit 5 installed on the first adjustment body 44 moves along the trapezoidal slide rail 43 to adjust the longitudinal position and adjust the photovoltaic module to a suitable longitudinal position. By adjusting the lower fixing seat 51 to slide in the adjustment groove 444, the lateral position of the installation unit 5 is adjusted, and the photovoltaic module is adjusted to a suitable lateral position. In turn, the position of adjacent photovoltaic modules is adjusted, so as to avoid the need to disassemble the bracket and reinstall when the position of the photovoltaic module is loose or shifted, which is inconvenient for adjusting the position.

[0038] According to the appendix Figure 1-10 As shown, this invention also discloses a construction method for preventing microcracks in web-loaded building photovoltaic integrated roof panels, comprising the following steps: Step S1: Lay the roof panel unit 1 on the building base 2, so that it is laid flat on the top of the roof; Step S2: By driving through nails 33 into the building base 2, install and fix the bracket assembly 3 at the A end position of the roof panel unit 1, fix it in the bracket sliding groove, and use the aluminum alloy guide rail 32 to precisely position and mechanically fix the A end. Step S3: Insert the roof panel unit 1A end into the bracket assembly 3, which can slide longitudinally by ±100mm; Step S4: The adjacent roof panel unit 1B end covers the A end, and the adjacent B end fusion point is moved so that the support assembly 3 is always directly below the web plate 13. Step S5: The TPO layer is thermally fused, and adjacent roof panel units 1 form a continuous sealed interface; Step S6: Install the adjustment unit 4 on the building base 2, install the installation unit 5 directly below the web plate 13, and adjust the lower fixing seat 51 and upper fixing seat 52 on the installation unit 5 to be at the upper and lower ends of the roof panel unit 1. Step S7: Fix the photovoltaic modules in the photovoltaic mounting groove 56, with clamp pressure ≤0.15MPa to avoid microcracks caused by compression; Step S8: Adjust the position of each component of the installation unit 5 and the adjustment unit 4 to ensure that a thermal expansion gap of 5-8mm is maintained between adjacent photovoltaic modules.

[0039] Adjust the longitudinal position of the first adjustment body 44 and the second adjustment body 45 on the trapezoidal slide rail 43 to adjust the longitudinal position of the installation unit 5 accordingly. Adjust the lateral installation position of the installation unit 5 on the first adjustment body 44 to adjust the lateral position of the installation unit 5 accordingly. Adjust the buffer position between adjacent photovoltaic modules to avoid collision damage during typhoons.

[0040] Working principle: The roof panel unit 1 is laid on the building base 2, so that it is laid flat on the top of the roof; By driving through nails 33 into the building base 2, the bracket assembly 3 is installed and fixed at the A end position of the roof panel unit 1 and fixed in the bracket sliding groove. The A end is precisely positioned and mechanically fixed by the aluminum alloy guide rail 32. The connector 14 at end A of the roof panel unit 1 is embedded in the aluminum alloy guide rail 32, and the roof panel unit 1 is fixed by the bracket assembly 3. The adjacent roof panel unit 1B covers the A end, and the fusion point of the adjacent B end is moved so that the support assembly 3 is always directly below the web plate 13. The TPO layer is fused together, forming a continuous sealed interface between adjacent roof panel units 1. The A end of the metal substrate 11 is mechanically fixed to the bracket assembly 3 to resist wind deflection. The B end of the polymer composite layer 12 is attached to the A end of the tail of the adjacent polymer composite layer 12 to fuse the TPO layer together, thus fixing and sealing the adjacent polymer composite layers 12 and completing the fixation of the adjacent roof panel units 1. An adjustment unit 4 is installed on the building base 2, and an installation unit 5 is installed directly below the web plate 13. The lower fixing seat 51 and the upper fixing seat 52 on the adjustment installation unit 5 are located at the upper and lower ends of the roof panel unit 1. The photovoltaic modules are fixed in the photovoltaic mounting groove 56 with a clamp pressure ≤0.15MPa to avoid microcracks caused by compression. Adjust the positions of each component of the installation unit 5 and the adjustment unit 4. Adjust the installation unit 5 on the first adjustment body 44 to move along the trapezoidal slide rail 43 to adjust the longitudinal position. Adjust the first adjustment body 44 and the second adjustment body 45 on the trapezoidal slide rail 43 to adjust the longitudinal position of the installation unit 5, and then adjust the longitudinal position of the photovoltaic panel module installed on the installation unit 5 to ensure that a thermal expansion gap of 5-8mm is maintained between adjacent photovoltaic modules.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A web-loaded tension-type building photovoltaic integrated roof panel, characterized in that, include: The roof panel unit (1) is composed of a metal substrate (11) and a polymer composite layer (12) forming a spoon-shaped cross section, with the tail end of the spoon being end A and the head end being end B. A web plate (13) is provided on the metal substrate (11). The bracket assembly (3) is snapped into the roof panel unit (1) at end A; The adjustment unit (4) includes two trapezoidal slide rails (43), a first adjustment body (44) and two second adjustment bodies (45). The first adjustment body (44) slides between the two trapezoidal slide rails (43), and the first adjustment body (44) and the second adjustment body (45) are connected by bolts. The installation unit (5) includes a lower fixing seat (51) and an upper fixing seat (52). The lower fixing seat (51) is installed on the first adjusting body (44), and the upper fixing seat (52) slides relative to the lower fixing seat (51). The lower fixing seat (51) and the upper fixing seat (52) are located at the lower end and the upper end of the roof panel unit (1), respectively. The adjustment unit (4) also includes a base (41) and a support frame (42). The base (41) is installed on the building base (2) by self-tapping screws. The support frame (42) is fixedly connected to the base (41). The top of the support frame (42) is fixedly connected to the trapezoidal slide rail (43). The base (41) and the support frame (42) support the trapezoidal slide rail (43). The first regulating body (44) includes: The connecting body (441) is configured as Z-shaped, and the connecting body (441) is in contact with two trapezoidal slide rails (43); A horizontal extension (442) is provided at the top of the connecting body (441); Mounting base (443) is perpendicular to the horizontal extension (442). An adjustment groove (444) is provided on the mounting base (443). The adjustment groove (444) is used to install the mounting unit (5). The adjustment groove (444) cooperates with the mounting base (443) to support the mounting unit (5). The second regulating body (45) includes: The fitting part (451) is configured in a Z-shape, and the fitting part (451) is fitted to the side of the trapezoidal slide rail (43) away from the connecting body (441); A horizontal connecting part (452) is provided at the top of the fitting part (451). The horizontal connecting part (452) is provided in correspondence with the horizontal extension part (442). Mounting holes are provided on the horizontal connecting part (452) and the horizontal extension part (442), and fixing bolts are installed in the mounting holes. An arc-shaped fixing part (453) is provided at the outer end of the fitting part (451), and a cavity is formed between the fitting part (451) and the arc-shaped fixing part (453).

2. The web-loaded tension-type building photovoltaic integrated roof panel according to claim 1, characterized in that, The roof panel unit (1) is located above the building base (2), and the B end of the adjacent roof panel unit (1) covers the A end of the roof panel unit (1). The B end of the polymer composite layer (12) has a reserved hot melt area for the TPO layer. The metal substrate (11) and the polymer composite layer (12) are bonded together by a hot composite process.

3. The web-loaded tension-type building photovoltaic integrated roof panel according to claim 1, characterized in that, The support assembly (3) includes: A fixing bracket (31) is installed at end A of the roof panel unit (1); A type of aluminum alloy guide rail (32) is fixedly connected to a fixing frame (31). A connector (14) is provided at the A end of the roof panel unit (1). The connector (14) is embedded in the type of aluminum alloy guide rail (32). Penetrating nails (33) are driven into the building base (2) and are used to fix several aluminum alloy guide rails (32) to the building base (2).

4. The web-loaded tension-type building photovoltaic integrated roof panel according to claim 1, characterized in that, Both ends of the lower fixing seat (51) are provided with lower extension portions (53), and both ends of the upper fixing seat (52) are provided with upper extension portions (54). A lower soft pad (531) is installed above the lower extension portion (53), and an upper soft pad (541) is installed below the upper extension portion (54). The lower soft pad (531) and the upper soft pad (541) are arranged correspondingly. The lower soft pad (531) is attached to the bottom end of the roof panel unit (1), and the upper soft pad (541) is attached to the top end of the roof panel unit (1).

5. A web-loaded tension-type building photovoltaic integrated roof panel according to claim 1, characterized in that, A photovoltaic bracket (55) is installed on the upper fixed seat (52), and a photovoltaic mounting groove (56) is provided in the photovoltaic bracket (55) for installing the photovoltaic panel bracket.

6. A method for preventing microcracks in a web-loaded, tension-type building photovoltaic integrated roof panel, as described in any one of claims 1-5, characterized in that... Includes the following steps: Step S1: Lay the roof panel unit (1) on the building base (2) so that it is laid flat on the top of the roof; Step S2: By driving through nails (33) into the building base (2), install and fix the bracket assembly (3) at the A end position of the roof panel unit (1), fix it in the bracket sliding groove, and use the aluminum alloy guide rail (32) to precisely position and mechanically fix the A end; Step S3: Insert end A of the roof panel unit (1) into the bracket assembly (3), which can slide longitudinally by ±100mm; Step S4: The B end of the adjacent roof panel unit (1) covers the A end, and the fusion point of the adjacent B end is moved so that the support assembly (3) is always directly below the web (13); Step S5: The TPO layer is fused by heat, and adjacent roof panel units (1) form a continuous sealed interface; Step S6: Install the adjustment unit (4) on the building base (2), install the installation unit (5) directly below the web plate (13), and adjust the lower fixing seat (51) and upper fixing seat (52) on the installation unit (5) to be at the upper and lower ends of the roof panel unit (1); Step S7: Fix the photovoltaic module in the photovoltaic mounting groove (56), with clamp pressure ≤0.15MPa to avoid microcracks caused by compression; Step S8: Adjust the position of each component of the installation unit (5) and the adjustment unit (4) to ensure that a thermal expansion gap of 5-8mm is maintained between adjacent photovoltaic modules.

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