CN219992896U

CN219992896U - BIPV daylighting roof system

Info

Publication number: CN219992896U
Application number: CN202320442829.1U
Authority: CN
Inventors: 韩维池; 贺有礼; 徐东; 刘海泉; 邓锋
Original assignee: Beijing Jianghe Smart Photovoltaic Construction Co ltd
Current assignee: Beijing Jianghe Smart Photovoltaic Construction Co ltd
Priority date: 2023-03-10
Filing date: 2023-03-10
Publication date: 2023-11-10
Anticipated expiration: 2033-03-10

Abstract

The utility model provides a BIPV daylighting roof system, which relates to the technical field of photovoltaic power generation assemblies and comprises a base, a photovoltaic assembly, a steel beam, a joint cable and a junction box; the base comprises a bracket and a pressing plate, and a plurality of photovoltaic module arrays are connected to two sides of the bracket; the bottom of the bracket is connected with the steel beam; the clamp plate is connected in the photovoltaic module's of the both sides of support top, the clamp plate pass through the draw bolt with leg joint, the clamp plate with reserve the space that holds joint cable, terminal box between the photovoltaic module. The utility model can hide the joint cable and the junction box, avoid hidden danger of water leakage and facilitate overhaul, maintenance and replacement.

Description

BIPV daylighting roof system

Technical Field

The utility model relates to the technical field of photovoltaic power generation assemblies, in particular to a BIPV daylighting roof system.

Background

BIPV (building Integrated PV) technology is a technology that integrates solar power generation (photovoltaic) products into a building. BIPV photovoltaic building integrated application market is wide, and roof daylighting roof, sunshade decoration, non-transparent facade and other scenes are all main areas, especially daylighting roof scenes.

The existing BIPV daylighting roof has the following problems: when a system for hiding the component cables and the junction boxes is adopted, no matter the exposed frame system or the hidden frame system, most of the junction boxes adopt a component side wire outlet mode and are hidden in a grid glue joint, glue is required to be applied to the joint of the system, hidden danger of water leakage exists, and construction and later operation and maintenance replacement are complex; when the system for hiding the component cable and the junction box is not adopted, the component cable and the junction box can leak outwards, and the component photovoltaic cable is connected in disorder, so that the impression effect is seriously influenced.

Disclosure of Invention

The utility model aims to provide a BIPV daylighting roof system, which adopts a vertical and horizontal hidden transparent frame system and combines the packaging technology of a component to realize hiding of the component cable and the junction box and realize outdoor wiring of a photovoltaic component, so as to solve the problems of hidden danger of easy water leakage, difficult overhaul and high maintenance and replacement difficulty of the daylighting roof junction box in the prior art.

Based on the above purpose, the BIPV daylighting roof system provided by the utility model comprises a base, a photovoltaic module, a steel beam, a joint cable and a junction box; the base comprises a bracket and a pressing plate, and a plurality of photovoltaic module arrays are connected to two sides of the bracket; the bottom of the bracket is connected with the steel beam; the pressing plate is connected to the upper parts of the photovoltaic modules on two sides of the support, the pressing plate is connected with the support through a pull bolt, and a space for accommodating a joint cable and a junction box is reserved between the pressing plate and the photovoltaic modules;

the top surface of the pressing plate is irregularly shaped, one side of the top surface of the pressing plate is of a planar structure, and the other side of the top surface of the pressing plate is of a curved surface structure with a preset radian; the two end surfaces of the pressing plate are obliquely arranged at a preset angle with the top surface of the pressing plate respectively, and the end parts of the two end surfaces of the pressing plate are connected with the photovoltaic module respectively.

Preferably, the steel beam further comprises a hidden frame cross beam, wherein a plurality of brackets are fixed on the steel beam according to preset intervals, and the hidden frame cross beam is positioned between the two brackets; the hidden frame beam comprises a beam body, a support frame, a connecting frame and a rubber plate;

the bottom of the beam body is lapped above the steel beam; two sides of the top of the beam body are connected to the bottom of the photovoltaic module through sealing rubber strips; a threaded hole is formed in the center of the top of the beam body; the bottom of the connecting frame is sleeved on the outer side of the top of the supporting frame; the screw penetrates through the supporting frame and the connecting frame to be in threaded connection with the threaded hole of the beam body; two ends of the top of the connecting frame are respectively inserted into two adjacent photovoltaic modules; the top of link pass through the foam stick with the bottom of offset plate is connected, the both sides of offset plate respectively with two adjacent photovoltaic module sealing connection, and the up end of offset plate is in the coplanar with photovoltaic module's top surface.

Preferably, the ends of the two ends, connected with the photovoltaic module, of the pressing plate are connected with the top of the photovoltaic module through a second adhesive tape.

Preferably, the support is longitudinally distributed along the photovoltaic module, and the top of the support is connected with the photovoltaic module through sealant; the bottom of support pass through first adhesive tape with photovoltaic module is connected.

Preferably, the bracket includes a first support, a second support, and a support plate; the first supporting piece is connected to the top of the supporting plate; the second supporting piece is connected to the bottom of the supporting plate; the support is connected with the photovoltaic module through the first support piece, and the support is connected with the photovoltaic module and the steel beam through the second support piece respectively.

Preferably, the top of the first supporting piece is provided with a mounting groove, and one end of the pull bolt is connected in the mounting groove in a clamping mode.

Preferably, the second support comprises a first connection plate and a second connection plate; the two ends of the first connecting plate are symmetrically connected with the second connecting plate respectively.

Preferably, the first connecting plate is connected with the steel beam through a tapping screw, and the second connecting plate is connected with the photovoltaic module through a first adhesive tape.

Preferably, the draw bolt comprises a head, a nut, a washer and a screw; the head is connected to one end of the screw; the nut and the gasket are respectively sleeved on the screw rod; the head is arranged in the mounting groove, and the screw rod passes through the mounting groove and is fixedly connected with the pressing plate through the nut and the gasket.

By adopting the technical scheme, the BIPV daylighting roof system provided by the utility model has the following technical effects compared with the prior art:

the BIPV daylighting roof system comprises a base, a photovoltaic module, a joint cable and a junction box; the base comprises a bracket and a pressing plate, the pressing plate is connected with the photovoltaic module, a space for accommodating the connector cable and the junction box is arranged between the pressing plate and the photovoltaic module, the connector cable and the junction box are hidden, hidden danger of water leakage is avoided, and meanwhile, later-stage overhaul, maintenance and replacement are easy; the junction box of the photovoltaic module is placed on one outdoor side, so that the junction box is prevented from being knocked in the process of transporting and installing the module. The outdoor wiring does not need a special installation process, is convenient and quick to wire according to the pressing and inserting, and is convenient to install and operate and maintain in the later period. In addition, when the assembly is packaged, a black EPE strip is packaged at one side of the junction box, so that the joint cable and the junction box are prevented from being observed indoors, and the indoor attractiveness is improved; in addition, the whole irregular shape that adopts of clamp plate is in order to reduce the shielding area to photovoltaic module, reduces photovoltaic module's shadow area, increases photovoltaic module's area of absorbing sunlight.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of the overall structure of a BIPV daylighting roof system according to an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of a BIPV daylighting roof system in accordance with an embodiment of the present utility model;

FIG. 3 is a schematic longitudinal cross-sectional view of a BIPV daylighting roof system in accordance with an embodiment of the present utility model;

FIG. 4 is a schematic view of the mounting location of an EPE strip packaged on one side of a module junction box in a BIPV daylighting roof system provided by an embodiment of the present utility model;

fig. 5 is a schematic diagram of a distribution structure of EPE strips in a photovoltaic module of a BIPV daylighting roof system according to an embodiment of the present utility model;

icon:

1-base: 11-a bracket; 111-a first support; 112-a second support; 1121-a first connection plate, 1122-a second connection plate; 113-a support plate; 12-pressing plates; 2-a photovoltaic module; 3-connector cable; 4-junction box; 5-pulling a bolt; 51-head, 52-nut, 53-washer; 54-screw; the novel rubber sealing device comprises a 6-hidden frame cross beam, a 61-cross beam body, a 62-supporting frame, a 63-connecting frame, a 64-rubber plate, a 65-sealing rubber strip, 66-screws, 67-foam bars and 7-first rubber strips; 8-a second adhesive tape; 9-sealing glue; 10-steel beams; 20-EPE strip.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 to 5, an embodiment of the present utility model provides a BIPV daylighting roof system, which includes a base 1, a photovoltaic module 2, a joint cable 3, a junction box 4, and a steel beam 10; the base 1 comprises a bracket 11 and a pressing plate 12, and a plurality of photovoltaic modules 2 are connected to two sides of the bracket 11 in an array manner; the bottom of the bracket 11 is connected with a steel beam 10; the clamp plate 12 is connected in the top of the photovoltaic module 2 of the both sides of support 11, and clamp plate 12 passes through the draw bolt 5 to be connected with support 11, clamp plate 12 with reserve the space that holds joint cable 3, terminal box 4 between the photovoltaic module 2.

As shown in fig. 1 and 2, the base 1 is longitudinally connected along the photovoltaic module, when in use, the photovoltaic module is connected to two sides of the bracket 11, and the photovoltaic modules 2 are distributed in an array along two sides of the bracket 11; the pressing plate 12 is arranged above the adjacent photovoltaic modules 2, and the tops of the adjacent photovoltaic modules 2 are connected through the pressing plate 12; one end of the pull bolt 5 is inserted into the bracket 11, the other end passes through the bracket 11 and is fixedly connected with the pressing plate 12 through nuts, and a plurality of photovoltaic modules 2 are longitudinally connected through the pressing plate 12 and the bracket 11.

The clamp plate 12 protrudes in the top surface of photovoltaic module 2, reserves the space that holds joint cable 3, terminal box 4 between clamp plate 12 and the photovoltaic module 2 for hide joint cable 3 and terminal box 4. The space is divided into two parts by a pull bolt 5; in the orientation shown in fig. 2, the right side portion, which is located in the accommodation space between the pressing plate 12 and the photovoltaic module 2, is larger than the left side portion, which is used to accommodate the junction cable 3 and the junction box 4. The connector cable 3 and the junction box 4 are hidden in the pressing plate, so that outdoor wiring of the photovoltaic module 2 is realized, hidden danger that the grid of the existing daylighting roof module is easy to leak is also solved, later maintenance and maintenance replacement are facilitated, and the hidden design appearance is more attractive.

As a preferable technical scheme, the hidden frame cross beam 6 is further comprised, a plurality of brackets 11 are fixed on the steel beam 10 according to a preset interval, and the hidden frame cross beam 6 is positioned between the two brackets 11; the hidden frame beam 6 comprises a beam body 61, a supporting frame 62, a connecting frame 63 and a rubber plate 64; the bottom of the beam body 61 is lapped above the steel beam 10; both sides of the top of the beam body 61 are connected to the bottom of the photovoltaic module 2 through sealing rubber strips 65; a threaded hole is formed in the center of the top of the beam body 61; the bottom of the connecting frame 63 is sleeved outside the top of the supporting frame 62; the screw 66 penetrates through the supporting frame 62 and the connecting frame 63 to be in threaded connection with the threaded hole of the beam body 61; two ends of the top of the connecting frame 63 are respectively inserted into two adjacent photovoltaic modules 2; the top of link 63 is connected with the bottom of offset plate 64 through foam stick 67, and the both sides of offset plate 64 are respectively with two adjacent photovoltaic module 2 sealing connection to the up end of offset plate 64 is in the coplanar with photovoltaic module 2's top surface. The design appearance is succinct, reduces the deposition, improves the generated energy, reduces the fortune dimension cost.

Clamping grooves are symmetrically formed in two sides of the top of the beam body 61 and are used for fixedly connecting sealing rubber strips 65, and the beam body 61 is connected with the photovoltaic module 2 through the rubber strips 65; a bulge is arranged at the center of the top of the beam body 61, a threaded hole is arranged in the bulge, and the connecting frame 63 and the supporting frame 62 are fixedly connected to the top of the beam body through the threaded hole; the cross section of the connecting frame 63 is of a T-shaped structure, and a connecting groove is formed in the top of the connecting frame 63 and is used for fixedly connecting the foam rods 67; the two ends at the top of the connecting frame 63 extend into two adjacent photovoltaic modules 2 respectively, and are used for integrally penetrating and installing the connecting frame 63, the supporting frame 62 and the beam body 61 between the two adjacent photovoltaic modules 2. The two sides of the glue sheet 64 may be connected to the photovoltaic module by glue or other sealing structure.

The photovoltaic modules 2 are connected through the base 1 along the longitudinal direction of the photovoltaic modules, and the photovoltaic modules 2 are connected in the transverse direction through the hidden frame cross beam 6. As shown in the orientation of fig. 1, the upper part of the hidden frame beam 6 is positioned between the adjacent photovoltaic modules 2, and the lower part of the hidden frame beam 6 is positioned outside the adjacent photovoltaic modules 2; the hidden frame cross beam 6 is stably connected with the base 1, and the overall connection strength and stability of the photovoltaic module 2 are enhanced.

The upper end surface of the glue plate 64 and the top surface of the photovoltaic module 2 are positioned on the same plane so as to realize a hidden structure in the transverse direction of the photovoltaic module 2.

The hidden frame cross beam 6 is arranged between the two brackets 11 in a penetrating way, the bottom of the hidden frame cross beam 6 is lapped above the steel beam 10, and the hidden frame cross beam 6 is supported by the steel beam 10.

As a preferred embodiment, the platen 12 is irregularly shaped. One side of the top surface of the pressing plate 12 is in a planar structure, and the other side of the top surface of the pressing plate 12 is in a curved surface structure with a preset radian; the two end surfaces of the pressing plate 12 are respectively inclined at a preset angle with the top surface of the pressing plate 12, and the end parts of the two end surfaces of the pressing plate 12 are respectively connected with the photovoltaic module 2. The overall irregular shape of the pressing plate 12 is used for reducing the shielding area of the photovoltaic module 2, reducing the shadow area of the photovoltaic module 2 and increasing the sunlight absorbing area of the photovoltaic module 2.

As shown in fig. 2, the left side of the top surface of the pressing plate 12 has a planar structure through which the tie 5 passes to stably connect the pressing plate 12 with the bracket 11, the planar structure facilitates the installation of the tie 5, and the acting surfaces of the tie 5 are bonded to each other.

The right side part of the top surface of the pressing plate 12 is a curved surface with a certain radian, and the left side part and the right side part of the top surface of the pressing plate 12 are connected into an integrated structure. The right portion of the pressing plate 12 is designed in a curved structure for increasing the accommodation space for completely hiding the tab cable 3 and the junction box 4 of the photovoltaic module 2, and no corner angle occurs to cause collision to the tab cable 3 and the junction box 4.

The left portion of the top surface of the pressing plate 12 is higher than the right portion in order to facilitate the space for applying a sufficient force when the left portion is connected to the bracket 11 by the tie bolts 5.

As a preferred embodiment, the opposite ends of the pressing plate 12 connected to the photovoltaic module 2 are inclined at a predetermined angle.

In this embodiment, as shown in the orientation of fig. 2, the left side surface and the right side surface of the pressing plate 12 are inclined at a certain angle in the horizontal direction, and the inclination angle of the pressing plate 12 is designed so that the top of the pressing plate 12 will not accumulate ash and water, and the shadow of the pressing plate 12 to the photovoltaic module 2 is reduced.

As a preferable technical scheme, two ends of the pressing plate 12 connected with the photovoltaic module 2 are connected with the top of the photovoltaic module 2 through the second adhesive tape 8.

Specifically, the bottom of the left side face and the right side face of the pressing plate 12 are respectively connected with the top face of the photovoltaic module 2 through the second adhesive tape 8, the second adhesive tape 8 adopts penetrating adhesive tapes, the first heavy waterproof of the photovoltaic module 2 is achieved, and rainwater cannot enter the photovoltaic module 2 from the pressing plate 12.

As a preferred technical solution, the top of the pressing plate 12 is provided with a mounting hole for mounting one end of the pull bolt 5, and one end of the pull bolt 5 passes through the mounting hole to connect the pressing plate 12 with the bracket 11.

As a preferable technical scheme, the brackets 11 are distributed along the longitudinal direction of the photovoltaic module 2, and the top of the brackets 11 is connected with the photovoltaic module 2 through the sealant 9; the bottom of the bracket 11 is connected with the photovoltaic module 2 through a first adhesive tape 7.

As a preferred technical solution, the bracket 11 includes a first support 111, a second support 112 and a support plate 113; the first support 111 is connected to the top of the support plate 113; the second support 112 is connected to the bottom of the support plate 113; the support 11 is connected with the photovoltaic module 2 through a first support piece 111, and the support 11 is respectively connected with the photovoltaic module 2 and the steel beam 10 through a second support piece 112. The support 11 is connected with the photovoltaic modules 2 on two sides of the support and the pressing plate 12 on the top of the support 11 respectively through the first support 111, the support 11 is connected with the steel beam 10 through the second support 112, and the support 11 is connected with the bottom of the photovoltaic modules 2.

Preferably, the support plate 113 is a flat plate structure, and the support plate 113 is vertically connected between the first support 111 and the second support 112.

The left and right opposite sides of the first support 111 are symmetrically connected between two adjacent photovoltaic modules 2 by the sealant 9 in the orientation shown in fig. 2. The connection of the bracket 11 to the photovoltaic module 2 is achieved by the left and right sides of the first support 111. The photovoltaic module 2, the sealant 9, the pressing plate 12 and the first supporting piece 111 form a closed structure, so that the second waterproof effect of the photovoltaic module 2 is realized.

As a preferred embodiment, the top of the first support 111 is provided with a mounting groove. The mounting groove is used for installing one end of the pull bolt 5, and the other end of the pull bolt 5 penetrates through the mounting groove and the mounting hole of the pressing plate 12, so that the first supporting piece 111 is connected with the pressing plate 12, and the connection stability of two adjacent photovoltaic modules is improved.

Specifically, as shown in the orientation of fig. 2, the size of the mounting groove is larger than the size of the bottom end of the pull bolt 5 positioned in the mounting groove, so as to play a role in axially limiting the pull bolt 5 through the mounting groove.

As a preferred embodiment, the second support 112 includes a first connection plate 1121 and a second connection plate 1122; the second connection plates 1122 are symmetrically connected to both ends of the first connection plate 1121.

The first connecting plate 1121 and the second connecting plate 1122 are both located outside the bottom of the photovoltaic module 2, and the first connecting plate 1121 and the second connecting plate 1122 are connected between the bottom of the photovoltaic module 2 and the steel beam 10. The first connecting plate 1121 and the second connecting plate 1122 are respectively connected to the first connecting plate 1121 in a perpendicular manner to form an L-shaped structure.

As a preferable technical solution, the first connecting plate 1121 is connected to the steel beam 10 by a tapping screw, and the second connecting plate 1122 is connected to the photovoltaic module 2 by a first adhesive tape 7.

As shown in fig. 2, the first connecting plate 1121 has a flat plate structure, the flat plate structure is more easily attached to the top of the steel beam 10, and the first connecting plate 1121 is tightly connected with the top surface of the steel beam 10 through tapping screws; the top surface of the second connecting plate 1122 is a plane so as to attach the second connecting plate 1122 to the bottom surface of the photovoltaic module 2, and the second connecting plate 1122 is tightly connected with the photovoltaic module 2 through the first adhesive tape 7.

As a preferred technical solution, the pull stud 5 comprises a head 51, a nut 52, a washer 53 and a screw 54; the head 51 is connected to one end of the screw 54, and the nut 52 and the gasket 53 are respectively sleeved on the screw 54; the head 51 is arranged in the mounting groove, and the screw 54 passes through the mounting groove and is fixedly connected with the pressing plate 12 through the nut 52; a washer 53 is connected between the nut 52 and the platen 12.

The outer edge diameter dimension of the head 51 is larger than the width dimension of the mounting groove so as to clamp the head 51 in the mounting groove, the head 51 is limited by the mounting groove, and the length of the screw 54 extending out of the mounting groove can be limited. When the clamp is applied, the head 51 is lifted upwards until the acting surface of the head 51 is abutted against the inner wall surface of the mounting groove, the screw 54 passes through the mounting groove and the mounting hole of the clamp plate, the gasket 53 and the nut 52 are sleeved outside the screw 54, the gasket 53 is positioned below the nut 52 and above the clamp plate 12, the nut 52 is screwed on the screw 54, the clamp plate 12 and the first support 111 are fastened through the gasket 53 and the nut 52, and the clamp plate 12 and the bracket 11 are fixedly connected.

The plurality of pull bolts 5 are longitudinally distributed along the pressing plate 12, the pull bolts 5 are exposed and installed, neglected loading can be effectively avoided, safety is improved, and meanwhile, the distance between the plurality of pull bolts 5 can be adjusted conveniently to adapt to different wind pressure loads.

In this embodiment, as shown in fig. 4, when the photovoltaic module 2 is packaged, a black EPE strip 20 is adhered to one side of the junction box, and is used for shielding the joint cable 3 and the junction box 4, so as to avoid observing the joint cable 3 and the junction box 4 indoors and increase indoor attractiveness.

The BIPV daylighting roof system has the following advantages:

the base 1 has simple and convenient installation form, no special processing technology, good universality and high strength, and is suitable for various structural systems.

The pressing plate 12 is irregularly designed, so that the structural strength is met, the shadow shielding of the pressing plate 12 on the assembly is reduced, and the unit power generation amount is improved; meanwhile, the junction box 4 and the joint cable 3 at the outer side are prevented from being exposed to wind, sun and rain for a long time, and the service life of the assembly is guaranteed to be the lowest 25 years; the pressing plate 12 and the photovoltaic module 2 are in sealing connection with each other through the second adhesive tape 8 and the support 11 and the photovoltaic module 2 through the sealant 9, so that the double waterproof effect is achieved. The junction box 4 of the photovoltaic module 2 is placed on one outdoor side, so that the junction box 4 is prevented from being knocked in the process of transporting and installing the module. The outdoor wiring does not need a special installation process, is convenient and quick to wire according to the pressing and inserting, and is convenient to install and operate and maintain in the later period.

The photovoltaic modules are transversely connected through the hidden frame cross beams 6, dust accumulation of the photovoltaic modules 2 at the edges is avoided, the generated energy is improved, and the operation and maintenance cost is reduced.

The design of the top pull bolt 5 can effectively avoid neglected loading and improve the safety due to the exposed installation; meanwhile, the distance can be conveniently adjusted to adapt to different wind pressure loads.

In conclusion, the BIPV daylighting roof system has fewer components, is convenient to construct and improves the installation accuracy.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims

1. The BIPV daylighting roof system is characterized by comprising a base, a photovoltaic module, a steel beam, a joint cable and a junction box; the base comprises a bracket and a pressing plate, and a plurality of photovoltaic module arrays are connected to two sides of the bracket; the bottom of the bracket is connected with the steel beam; the pressing plate is connected to the upper parts of the photovoltaic modules on two sides of the support, the pressing plate is connected with the support through a pull bolt, and a space for accommodating a joint cable and a junction box is reserved between the pressing plate and the photovoltaic modules;

2. The BIPV daylighting roof system of claim 1, further comprising a hidden frame beam, wherein a plurality of the brackets are fixed to the steel beam at a predetermined distance, and wherein the hidden frame beam is positioned between two of the brackets; the hidden frame beam comprises a beam body, a support frame, a connecting frame and a rubber plate; the bottom of the beam body is lapped above the steel beam;

two sides of the top of the beam body are connected to the bottom of the photovoltaic module through sealing rubber strips; a threaded hole is formed in the center of the top of the beam body; the bottom of the connecting frame is sleeved on the outer side of the top of the supporting frame; the screw penetrates through the supporting frame and the connecting frame to be in threaded connection with the threaded hole of the beam body; two ends of the top of the connecting frame are respectively inserted into two adjacent photovoltaic modules; the top of link pass through the foam stick with the bottom of offset plate is connected, the both sides of offset plate respectively with two adjacent photovoltaic module sealing connection, and the up end of offset plate is in the coplanar with photovoltaic module's top surface.

3. The BIPV daylighting roof system of claim 1, wherein the brackets are longitudinally distributed along the photovoltaic module, and the tops of the brackets are connected with the photovoltaic module through sealant; the bottom of support pass through first adhesive tape with photovoltaic module is connected.

4. A BIPV roof system according to claim 3 wherein the bracket comprises a first support member, a second support member and a support plate; the first supporting piece is connected to the top of the supporting plate; the second supporting piece is connected to the bottom of the supporting plate; the support is connected with the photovoltaic module through the first support piece, and the support is connected with the photovoltaic module and the steel beam through the second support piece respectively.

5. The BIPV roof system according to claim 4, wherein the first support member has a mounting slot formed in a top portion thereof, and one end of the pull pin is connected to the mounting slot in a snap fit manner.

6. The BIPV roof system according to claim 4, wherein the second support comprises a first web and a second web; the two ends of the first connecting plate are symmetrically connected with the second connecting plate respectively.

7. The BIPV daylighting roof system of claim 6, wherein the first connection plate is connected to the steel beam by self-tapping screws and the second connection plate is connected to the photovoltaic module by a first adhesive strip.

8. A BIPV roof system according to claim 5 wherein the tie comprises a head, nut, washer and screw; the head is connected to one end of the screw; the nut and the gasket are respectively sleeved on the screw rod; the head is arranged in the mounting groove, and the screw rod passes through the mounting groove and is fixedly connected with the pressing plate through the nut and the gasket.