Photovoltaic module lightning protection installation system and photovoltaic roof

Abstract

The present application provides a lightning protection installation system for photovoltaic modules and a photovoltaic roof, belonging to the technical field of photovoltaic equipment. The lightning protection installation system for photovoltaic modules includes: a framed photovoltaic module, a pressing member, and a clamping block. The framed photovoltaic module includes a frame and a photovoltaic module; the frame has an installation cavity, and the long side of the photovoltaic module is embedded in the installation cavity; the pressing member is detachably connected to the clamping block and the two are in electrical contact. At least one of the pressing surface of the pressing member and the outer wall of the front frame of the frame is provided with a protruding structure for breaking the insulating film. The photovoltaic roof includes this lightning protection installation system for photovoltaic modules. While making it more convenient to install the photovoltaic module through the frame, it can effectively reduce the cost of the frame and can conduct electricity well with the lightning protection wire.

Description

Technical Field

[0001] The present application relates to the technical field of photovoltaic equipment, and more particularly, to a lightning protection installation system for photovoltaic modules and a photovoltaic roof. Background Art

[0002] BIPV (Building Integrated Photovoltaic) is a photovoltaic power generation system that is designed, constructed, and installed simultaneously with a new building and integrated with the building. It is an essential part of the building, performing both the functions of building materials (such as wind protection, rain protection, heat insulation, etc.) and power generation, making the building a green building.

[0003] In some existing BIPV systems in the prior art, frameless photovoltaic modules are used, and the photovoltaic modules are usually installed on the installation substrate using structural adhesive. The structural adhesive bonding requires the bonding surface to be clean and dust-free. Since this is an outdoor operation, the metal roof needs to be cleaned before the structural adhesive bonding, adding an extra cleaning process that is time-consuming and laborious and increases the construction cost. Moreover, the structural adhesive bonding solution is difficult to disassemble and repair.

[0004] To solve the above problems, in some existing technical solutions, framed photovoltaic modules are used for installation. However, to improve the aesthetics and corrosion resistance of the frame and the installation structure that cooperates with the frame, a protective layer with good insulation is usually formed on its surface in the prior art, which results in poor electrical contact between the photovoltaic and the installation structure that cooperates with the frame and cannot form a grounding loop between the grounding wire and the frame to effectively prevent lightning. Summary of the Invention

[0005] The purpose of the present application is to provide a lightning protection installation system for photovoltaic modules and a photovoltaic roof, which can make the installation of photovoltaic modules more convenient through the frame and can conduct electricity with the lightning protection wire better.

[0006] The embodiments of the present application are implemented as follows:

[0007] In a first aspect, an embodiment of the present application provides a lightning protection installation system for photovoltaic modules, including:

[0008] A framed photovoltaic module, which includes a frame and a photovoltaic module; the frame has an installation cavity, the long side of the photovoltaic module is embedded in the installation cavity, and the part of the frame body of the frame located on the front side of the photovoltaic module is the front frame body;

[0009] A pressing member, which has a first connecting portion and a pressing portion connected to each other, and the bottom of the pressing portion has a pressing surface for abutting against the front frame body; and

[0010] The card block comprises a second connecting portion and a holding portion which are connected to each other; the first connecting portion and the second connecting portion are detachably connected and are in electrical contact;

[0011] At least one of the pressing surface and the outer wall of the front frame is provided with a protruding structure for destroying the insulating film;

[0012] When the first connection part is connected to the second connection part and the pressing surface is pressed against the front frame, the clamping part is located on the back of the frame, and the clamping part and the frame are arranged opposite to each other and form a clamping gap.

[0013] In the above technical solution, the photovoltaic module is installed with a frame, which is convenient for the installation of the photovoltaic module. Moreover, considering that the long side bears the force after installation, the frame is installed on the long side of the photovoltaic module, and the frame on the short side can be omitted, which is conducive to further reducing the cost of the frame and effectively preventing dust accumulation on the short side.

[0014] The clamping part of the clamping block is arranged relative to the frame and forms a clamping gap, which is convenient for clamping the installation substrate to achieve installation; the frame is pressed together by a pressing piece, and then the pressing piece and the clamping block are detachably connected, making the installation, fixation, disassembly and maintenance of the frame convenient.

[0015] At least one of the pressing surface and the outer wall of the front frame is provided with a protruding structure for destroying the insulating film, so that the frame and the pressing piece can achieve good electrical conduction; the first connecting part is in electrical contact with the second connecting part, so that the pressing piece and the card block can achieve good electrical conduction. This arrangement enables the frame to achieve good electrical conduction with the card block through the pressing piece, so that when the lightning protection wire is connected to the card block for concealed wiring, the frame can achieve good electrical conduction with the lightning protection wire.

[0016] In some optional embodiments, both the pressing surface and the outer wall of the front frame are provided with protruding structures.

[0017] In some optional embodiments, the protruding structure is a burr, one of the pressing surface and the outer wall of the front frame is provided with a sharp-angled burr and the other is provided with a trapezoidal burr, and the burr of the sharp-angled burr is staggered with the burr of the trapezoidal burr.

[0018] In the above technical solution, the burrs make sharp contact with the insulating film, thereby ensuring that the insulating film on the pressing surface and the outer wall of the front frame can be better damaged, so that the conductive performance between the frame and the pressing piece is more reliable.

[0019] In some optional embodiments, the bottom of the first connecting portion has a first positioning portion, and the top of the second connecting portion has a second positioning portion for abutting against the first positioning portion; at least one of the first positioning portion and the second positioning portion is provided with a protruding structure for destroying the insulating film so that the first connecting portion and the second connecting portion are in electrical contact.

[0020] In the above technical solution, the insulating film is damaged by the protruding structure between the first positioning portion and the second positioning portion, which can better achieve electrical contact; the second positioning portion provides a supporting function for the first connecting portion through the abutting cooperation with the first positioning portion, and also makes the cooperation between the first connecting portion and the second connecting portion more stable.

[0021] In some alternative embodiments, one of the first positioning portion and the second positioning portion is a recessed positioning groove and the other is a protruding positioning support rod. The free end of the positioning support rod abuts against the groove wall of the positioning groove, and a protruding structure is provided at the free end of the positioning support rod.

[0022] In the above technical solution, the way of arranging the positioning groove and the positioning support rod is convenient, which is convenient for positioning the pressing member and the clamping block during installation; moreover, this setting method makes the contact area between the first positioning portion and the second positioning portion small and the contact pressure large, which is beneficial to better damage the insulating film at the contact portion and makes the electrical conductivity between the pressing member and the clamping block more reliable.

[0023] In some alternative embodiments, a ball head is provided at the free end of the positioning support rod, and the protruding structure is arranged on the ball head;

[0024] The positioning groove is an arc-shaped groove matching the ball head.

[0025] In the above technical solution, the setting method of the ball head and the arc-shaped groove is convenient for guiding and adjusting the relative positions of the two during installation positioning, making the installation more convenient.

[0026] In some alternative embodiments, the clamping block is provided with a lightning protection wiring card slot, satisfying one of the following conditions (a) to (b):

[0027] (a) A wiring cavity is provided inside the second connecting portion, and the lightning protection wiring card slot is located in the wiring cavity;

[0028] (b) The lightning protection wiring card slot is located at the bottom of the clamping portion.

[0029] In the above technical solution, the setting of the lightning protection wiring card slot enables the lightning protection wire to be stably fixed on the clamping block, and ensures that the wiring terminals at both ends of the lightning protection wire can better make electrical contact with the end face of the clamping block. The way of providing the wiring cavity and setting the lightning protection wiring card slot and the way of setting the lightning protection wiring card slot at the bottom of the clamping portion make the lightning protection wiring card slot have better concealment.

[0030] In some alternative embodiments, the frame of the frame is a U-shaped frame, and the U-shaped frame encloses an installation cavity.

[0031] In the above technical solution, the frame is set to a U-shaped structure. Compared with the conventional frame structure with a corner code cavity, the structure of the frame is simpler, which can reduce the cost of the frame.

[0032] In a second aspect, an embodiment of the present application provides a photovoltaic roof, including:

[0033] Mounting supports;

[0034] A mounting substrate, the long side of the mounting substrate is provided with a lapping structure, the lapping structure is mounted on the mounting support, the lapping structure surrounds an installation groove, the opening of the installation groove is located on the side surface of the mounting substrate, and the plate body at the top of the installation groove is a clamping plate body;

[0035] A lightning protection installation system for a photovoltaic module as in the embodiment of the first aspect; and

[0036] A lightning protection wire, the lightning protection wire is electrically connected to the clamping block;

[0037] The clamping plate body is accommodated in the clamping gap, the clamping part extends into the installation groove and abuts against the bottom of the clamping plate body, and the frame abuts against the top of the clamping plate body.

[0038] In the above technical solution, the mounting support is provided to support and fix the lapping structure of the mounting substrate, which is beneficial to improving the load-bearing performance of the mounting substrate and its wind uplift resistance performance at both ends. The mounting substrate is provided with an installation groove with a side opening for the clamping part of the clamping block to extend into, which facilitates the clamping of the clamping plate body by the clamping part of the clamping block and the frame to achieve installation.

[0039] The lightning protection wire is electrically connected to the clamping block, so that the frame is electrically connected to the lightning protection wire through the pressing part and the clamping block in sequence.

[0040] In some optional implementation schemes, a plurality of framed photovoltaic modules arranged side by side along the length direction of the photovoltaic module form a row;

[0041] In each row of framed photovoltaic modules, the lightning protection wire serially connects a plurality of clamping blocks in sequence along the length direction of the photovoltaic module.

[0042] In the above technical solution, the clamping blocks in the same row of photovoltaic modules are serially connected in sequence, wiring nearby, which is convenient for concealed wiring and saves cable costs.

[0043] In some optional implementation schemes, when two adjacent lapping structures are mounted on the mounting support, a coiled edge-locking structure is formed;

[0044] The distance from the top of the edge-locking structure to the roof is greater than the distance from the top of the lightning protection installation system for the photovoltaic module to the roof.

[0045] In the above technical solution, the edge-locking structure is higher than the installation system, so that the edge-locking structure will receive direct lightning strikes first, which can enhance the lightning protection effect on the installation system.

[0046] In some alternative embodiments, a support portion protrudes from the middle of the installation substrate; the support portion abuts against the middle of the back surface of the PV module;

[0047] The PV roofing further includes a support pedestal, and the support portion is installed on the support pedestal.

[0048] In the above technical solution, the provision of the support portion facilitates the support of the middle of the back surface of the PV module, which is beneficial to improving the support stability of the PV module. The provision of the support pedestal is used to support and fix the support portion, which is beneficial to further improving the load-bearing performance of the installation substrate and enhancing its wind uplift resistance in the middle. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0050] Figure 1 is a schematic structural diagram of a PV roofing provided by an embodiment of the present application;

[0051] Figure 2 is a schematic structural diagram of a PV roofing provided by an embodiment of the present application from another perspective;

[0052] Figure 3 is Figure 1 a partial structural diagram in

[0053] Figure 4 is Figure 1 a partial structural diagram in

[0054] Figure 5 is Figure 1 a partial structural diagram in

[0055] Figure 6 is Figure 5 a partial structural diagram in

[0056] Figure 7 is a partial structural diagram of other forms of PV roofing provided by an embodiment of the present application;

[0057] Figure 8 is Figure 1 a partial structural diagram in

[0058] Figure 9 is a partial structural diagram of another PV roofing provided by an embodiment of the present application;

[0059] Figure 10 is Figure 1 a schematic structural view of the pressing member and the frame of the photovoltaic roof in a separated state in

[0060] Figure 11 is Figure 1 a schematic structural view of the pressing member and the frame of the photovoltaic roof in a mating state in

[0061] Figure 12 is a schematic structural view of the pressing member and the frame of another photovoltaic roof in a separated state provided by an embodiment of the present application;

[0062] Figure 13 is Figure 12 a schematic structural view of the pressing member and the frame of the photovoltaic roof in a mating state in

[0063] Figure 14 is a schematic partial structural view of another photovoltaic roof provided by an embodiment of the present application;

[0064] Figure 15 is a schematic partial structural view of yet another photovoltaic roof provided by an embodiment of the present application.

[0065] Icons: 1 - Photovoltaic roof; 10 - Photovoltaic module lightning protection installation system; 100 - Photovoltaic module with frame; 110 - Frame; 111 - U-shaped frame body; 1111 - Front frame body; 1112 - Protruding structure; 1113 - Rear frame body; 112 - Installation cavity; 113 - Isolation adhesive layer; 120 - Photovoltaic module; 121 - Support gasket; 200 - Pressing member; 210 - First connection part; 211 - First positioning part; 220 - Pressing part; 221 - Pressing surface; 300 - Clamping block; 310 - Second connection part; 311 - Second positioning part; 312 - Wiring cavity; 313 - Support edge; 320 - Clamping part; 330 - Isolation layer; 331 - Isolation protrusion; 340 - Lightning protection wiring card slot; 400 - Fastener; 500 - Clamping gap; 20 - Installation support; 21 - Support body; 22 - Upright edge; 30 - Installation substrate; 31 - Lapping structure; 32 - Edge locking structure; 33 - Installation groove; 34 - Clamping plate body; 35 - Support part; 40 - Support support; 50 - Lightning protection wire; 2 - Roof. Detailed implementation manners

[0066] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0067] Accordingly, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts fall within the scope of protection of the present application.

[0068] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0069] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "in", "on", "under", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the product of this application is usually placed when in use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present application.

[0070] Terms such as "parallel" and "perpendicular" do not mean that absolute parallelism or perpendicularity is required between components, but may be slightly inclined.

[0071] The terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0072] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0073] Embodiment

[0074] Please refer to Figure 1 and Figure 2 , an embodiment of the present application provides a photovoltaic roof 1, including: a mounting support 20, a mounting substrate 30, a photovoltaic module lightning protection installation system 10, and a lightning protection wire 50.

[0075] Please refer to Figure 3 , the mounting support 20 has a support body 21 and an upright edge 22 located at the top of the support body 21. The support body 21 is fixed to the roof 2 by connecting members such as screws and bolts, for example.

[0076] The long side of the mounting substrate 30 is provided with a lapping structure 31, and the lapping structure 31 is mounted on the mounting support 20. Among them, the ends of the lapping structures 31 of two adjacent mounting substrates 30 abut against both sides of the vertical edge 22 and are wound to form a locking edge structure 32.

[0077] An installation groove 33 is provided around the lapping structure 31. The installation groove 33 is formed, for example, by bending and profiling the mounting substrate 30. The opening of the installation groove 33 is located on the side surface of the mounting substrate 30, and this opening faces the adjacent vertical edge 22. For the convenience of subsequent description, the plate body of the lapping structure 31 located at the top of the installation groove 33 is defined as the clamping plate body 34.

[0078] Please refer to Figure 4 , the lightning protection installation system 10 of the photovoltaic module includes a framed photovoltaic module 100, a pressing member 200, and a clamping block 300.

[0079] Please refer to Figure 5 and Figure 6 , the framed photovoltaic module 100 includes a frame 110 and a photovoltaic module 120.

[0080] The frame 110 has an installation cavity 112, and the long side of the photovoltaic module 120 is embedded in the installation cavity 112. In some exemplary embodiments, only the long sides of each photovoltaic module 120 are installed with the frame 110, and the short sides are not installed with the frame 110. Since the short sides of the photovoltaic module 120 are parallel to the eaves, it is easy to accumulate dust when installing the frame 110 on the short sides. Therefore, in this solution, only the long sides of the photovoltaic module 120 are installed with the frame 110 exemplarily, so that it is not easy to accumulate dust.

[0081] In the present application, the structural form of the frame body of the frame 110 is not limited and can be set in a manner well-known in the art, for example, set as a structure with a corner code cavity.

[0082] As an example, the frame body of the frame 110 is a U-shaped frame body 111, and the U-shaped frame body 111 encloses the installation cavity 112.

[0083] For the convenience of subsequent description, the part of the U-shaped frame body 111 located on the front side of the photovoltaic module 120 is defined as the front frame body 1111, and the part of the U-shaped frame body 111 located on the back side of the photovoltaic module 120 is defined as the back frame body 1113.

[0084] The pressing member 200 has a first connecting portion 210 and a pressing portion 220 connected to each other. The bottom of the pressing portion 220 has a pressing surface 221 for abutting against the front frame body 1111.

[0085] The clamping block 300 has a second connecting part 310 and a clamping part 320 which are connected to each other. Among them, the clamping part 320 is used to correspond to the frame 110; the first connecting part 210 corresponds to the second connecting part 310, and the two are detachably connected and in electrical contact.

[0086] As an example, the photovoltaic module 120 installation system further includes a fastener 400. The first connecting part 210 and the second connecting part 310 are threadedly connected through the fastener 400; of course, in other embodiments, the first connecting part 210 and the second connecting part 310 can also be detachably connected by means such as snap connection.

[0087] At least one of the pressing surface 221 and the outer wall of the front frame body 1111 is provided with a protruding structure 1112 for breaking the insulating film.

[0088] Please refer to Figure 4 , in the lightning protection installation system 10 of the photovoltaic module, when the first connecting part 210 is connected to the second connecting part 310 and the pressing surface 221 abuts against the front frame body 1111, the clamping part 320 is located on the back of the frame 110, and the clamping part 320 is distributed opposite to the frame 110 and encloses a clamping gap 500.

[0089] Please refer to Figure 5 , in the photovoltaic roof 1, the lightning protection wire 50 is exemplarily in electrical contact with the clamping block 300 through the terminal at the end, for example, the terminal is tightened on the end face of the clamping block 300 by a bolt, so that the lightning protection wire 50 is electrically connected to the clamping block 300; the clamping plate body 34 is accommodated in the clamping gap 500, the clamping part 320 extends into the installation groove 33 and abuts against the bottom of the clamping plate body 34, and the frame 110 abuts against the top of the clamping plate body 34.

[0090] The working principle of the embodiment of the present application is as follows:

[0091] In the framed photovoltaic module 100, the photovoltaic module 120 is installed with a frame 110, which is convenient for the installation of the photovoltaic module 120. The frame 110 is set as a U-shaped structure. Compared with the conventional frame structure with a corner code cavity, the structure of the frame 110 is simpler, which can reduce the cost of the frame 110. Moreover, considering that the long side bears the force after installation, installing the frame 110 on the long side of the photovoltaic module 120 can save the frame 110 on the short side, which is beneficial to further reducing the cost of the frame 110 and can effectively avoid dust accumulation on the short side.

[0092] In the lightning protection installation system 10 of the photovoltaic module, the clamping part 320 of the clamping block 300 is arranged opposite to the frame 110, which facilitates the clamping of the clamping plate body 34 of the installation substrate 30 to facilitate installation; the frame 110 is pressed by the pressing part 200, and then the pressing part 200 and the clamping block 300 are detachably connected, making the installation, fixing, disassembly and maintenance of the frame 110 convenient.

[0093] Wherein, at least one of the pressing surface 221 and the outer wall of the front frame body 1111 is provided with a protruding structure 1112 for breaking the insulating film, so that the frame 110 and the pressing part 200 can achieve good electrical conductivity; the first connecting part 210 is in electrical contact with the second connecting part 310, and also enables the pressing part 200 and the clamping block 300 to achieve good electrical conductivity. This setting method enables the frame 110 to conduct electricity with the clamping block 300 better through the pressing part 200, so that when the lightning protection wire 50 is connected to the clamping block 300 for concealed wiring, the frame 110 can conduct electricity with the lightning protection wire 50 better.

[0094] It should be noted that in this application, at least one of the pressing surface 221 and the outer wall of the front frame body 1111 is provided with a protruding structure 1112 for breaking the insulating film, which can realize the electrical contact between the two. The principle is illustrated by taking the pressing surface 221 provided with the protruding structure 1112 as an example: when the pressing surface 221 and the outer wall of the front frame body 1111 are pressed together, the protruding structure 1112 on the pressing surface 221 contacts the outer wall of the front frame body 1111 and breaks the insulating film on the outer wall of the front frame body 1111; because the protruding structure 1112 on the pressing surface 221 has a small contact surface with the outer wall of the front frame body 1111 and a large force, when the protruding structure 1112 breaks the insulating film on the outer wall of the front frame body 1111, the insulating film at the contact part between the protruding structure 1112 and the outer wall of the front frame body 1111 will also be broken.

[0095] Furthermore, it should be noted that in the application, the movement mode of the protruding structure 1112 for breaking the insulating film is not limited, for example, it can be in the form of piercing, friction, etc.

[0096] As an example, the protruding structure 1112 is a convex thorn, and the form of the convex thorn can make a sharp contact with the insulating film, ensuring that the insulating film can be pierced efficiently and reliably.

[0097] In the photovoltaic roof 1, an installation support 20 is arranged to support and fix the overlapping structure 31 of the installation substrate 30, which is beneficial to improving the load-bearing performance of the installation substrate 30 and its wind uplift resistance performance at both ends. The installation substrate 30 is provided with an installation groove 33 with a side opening for the clamping part 320 of the clamping block 300 to extend into, facilitating the clamping of the clamping part 320 of the clamping block 300 and the frame 110 to the clamping plate body 34 for installation.

[0098] Among them, the lightning protection wire 50 is electrically connected to the clamping block 300, so that the frame 110 is electrically connected to the lightning protection wire 50 through the pressing member 200 and the clamping block 300 in sequence, and it is convenient for concealed wiring.

[0099] Some exemplary implementation schemes of the embodiments of the present application will be further described below.

[0100] In the first aspect, considering aspects such as structural stability and service life:

[0101] Considering that the frame 110, the mounting substrate 30, and the clamping block 300 are usually made of metal, and when they work on the roof, they are in an outdoor environment, and it is easy to cause an intermetallic chemical corrosion reaction on the contact surface due to water.

[0102] Please continue to refer to Figure 4 , in order to improve the intermetallic chemical corrosion reaction between the frame 110 and the mounting substrate 30, in some exemplary implementation schemes, the outer wall of the back frame 1113 is covered with an isolation adhesive layer 113. The material of the isolation adhesive layer 113 is not limited as long as it can play an intermetallic chemical corrosion isolation role on the outer wall of the back frame 1113. By covering the outer wall of the back frame 1113 with the isolation adhesive layer 113, it is possible to effectively prevent the outer wall of the back frame 1113 from contacting the mounting substrate 30 where it is installed and generating an intermetallic chemical corrosion reaction.

[0103] As an example, the isolation adhesive layer 113 is connected to the outer wall of the back frame 1113 in an adhesive manner.

[0104] Please continue to refer to Figure 4 , in order to improve the intermetallic chemical corrosion reaction between the clamping block 300 and the mounting substrate 30, in some exemplary implementation schemes, the surface of the clamping portion 320 facing the clamping gap 500 is covered with an isolation layer 330; as an example, the isolation layer 330 is sleeved on the end where the clamping portion 320 is located. The isolation layer 330 can play an intermetallic chemical corrosion isolation role on the surface of the clamping portion 320 facing the clamping gap 500, and can effectively prevent the surface of the clamping portion 320 facing the clamping gap 500 from contacting the mounting substrate 30 where it is installed and generating an intermetallic chemical corrosion reaction.

[0105] Please refer to Figure 7, Further, isolation protrusions 331 protrude from the bottom of the second isolation layer 330. It can be understood that the shape of the isolation protrusions 331 is not limited. A support edge 313 is also provided at the bottom of the second connection portion 310. In this way, the wiring cavity 312 is, for example, in an unclosed form and its opening is located at the bottom of the second connection portion 310. The support edge 313 is, for example, sleeved at the opening of the second connection portion 310, and its material can also be selected as a material that can play a role in isolating intermetallic chemical corrosion. The support edge 313 is aligned with the bottom of the isolation protrusion 331 to ensure that the clamping block 300 can be placed flat during temporary support.

[0106] As Figure 4 In the structure shown in the example, the clamping portion 320 is connected to the bottom side wall of the second connection portion 310, so that the side wall of the second connection portion 310 is adjacent to the upper surface of the clamping portion 320. In this setting method, when the clamping portion 320 and the frame 110 cooperate to clamp the upper and lower surfaces of the clamping plate body 34, the side wall of the second connection portion 310 can abut against the outer side wall of the frame 110, which can improve the installation stability.

[0107] Please refer to Figure 8 , Considering the improvement of the load-bearing performance and wind uplift resistance of the photovoltaic roof 1, in some exemplary embodiments, a support portion 35 protrudes from the middle of the mounting substrate 30, and the support portion 35 abuts against the middle of the back surface of the photovoltaic module.

[0108] The setting of the support portion 35 facilitates the support of the middle of the back surface of the photovoltaic module 120, which is beneficial to improving the support stability of the photovoltaic module 120.

[0109] Further, the photovoltaic roof 1 further includes a support bracket 40, and the support bracket 40 is fixed to the roof 2 through connectors such as screws and bolts. The support portion 35 is installed on the support bracket 40. The setting of the support bracket 40 is used to support and fix the support portion 35, which is beneficial to further improving the load-bearing performance of the mounting substrate 30 and improving its wind uplift resistance in the middle.

[0110] In order to effectively protect the photovoltaic module 120 while improving the support stability of the photovoltaic module 120, as an example, a support gasket 121 is provided in the middle of the back surface of the photovoltaic module 120, and the support gasket 121 extends along the long side direction of the photovoltaic module 120, that is, the length direction of the support gasket 121 is parallel to the long side direction of the photovoltaic module 120. The support gasket 121 is correspondingly arranged with the support portion 35. In the photovoltaic roof 1, the top of the support portion 35 abuts against the bottom of the support gasket 121.

[0111] In the second aspect, considering aspects such as conductivity, lightning protection, and wiring:

[0112] In some exemplary embodiments, when two adjacent lapping structures 31 are installed on the mounting support 20, a wound edge-locking structure 32 is formed. The distance from the top of the edge-locking structure 32 to the roof surface is greater than the distance from the top of the lightning protection installation system 10 of the photovoltaic module to the roof surface, that is, the edge-locking structure 32 is higher than the lightning protection installation system 10 of the photovoltaic module. This setting enables the edge-locking structure 32 to receive direct lightning strikes first, which can enhance the lightning protection effect of the installation system.

[0113] In the photovoltaic roof 1, the length of the mounting substrate 30 is usually relatively long. A plurality of photovoltaic modules 120 are connected in parallel along the length direction of each mounting substrate 30. The length direction of the plurality of photovoltaic modules 120 corresponds to the length direction of the mounting substrate 30, and the width direction of each photovoltaic module 120 corresponds to the width direction of the mounting substrate 30.

[0114] For the convenience of subsequent description, a plurality of framed photovoltaic modules 100 distributed in parallel along the length direction of the photovoltaic module 120 are defined as a column.

[0115] In some exemplary embodiments, in each column of framed photovoltaic modules 100, the lightning protection wire 50 serially connects the clamping blocks 300 of the plurality of framed photovoltaic modules 100 in sequence along the length direction of the photovoltaic module 120. Among them, one end of the lightning protection wire 50 is electrically connected to the clamping block 300 of one framed photovoltaic module 100, and the other end of the lightning protection wire 50 is electrically connected to the clamping block 300 of the adjacent framed photovoltaic module 100. This setting serially connects the clamping blocks 300 in the same column of photovoltaic modules 120 in sequence, which can connect wires nearby, facilitate concealed wiring, and save cable costs.

[0116] It should be noted that in this application, the lightning protection wire 50 is electrically connected to the clamping block 300, which may mean that the lightning protection wire 50 is in electrical contact with the clamping block 300 and can conduct electricity through the wiring terminal at the end, or it may mean that the lightning protection wire 50 is electrically connected to the clamping block 300 and can conduct electricity through the wiring terminal at the end.

[0117] Optionally, the clamping block 300 is provided with a lightning protection wiring slot 340 for clamping the lightning protection wire 50. This setting enables the lightning protection wire 50 to be stably fixed on the clamping block 300 and ensures that the wiring terminal at the end of the lightning protection wire 50 can make good electrical contact with the end face of the clamping block 300.

[0118] Further, based on the above series connection method, in this application, the clamping blocks 300 at both ends of the framed photovoltaic module 100 in the length direction are provided with lightning protection wiring slots 340, and the clamping blocks 300 in the middle of the framed photovoltaic module 100 in the length direction may not be provided with lightning protection wiring slots 340. Of course, considering cost and installation convenience, lightning protection wiring slots 340 can also be provided on each clamping block 300.

[0119] Please refer to Figure 4 and Figure 14 , as an example, a wiring cavity 312 is provided inside the second connecting portion 310, and the lightning protection wiring card slot 340 is located in the wiring cavity 312. The way of arranging the lightning protection wiring card slot 340 by providing the wiring cavity 312 makes the lightning protection wiring card slot 340 have better concealment.

[0120] It should be noted that in the application, the wiring cavity 312 can be set in a closed form, such as Figure 4 shown; the wiring cavity 312 can also be set in an unclosed form, Figure 14 and the structure shown is taken as an example. Of course, when the wiring cavity 312 is set in an unclosed form, the opening position is not limited, and it can be opened at the bottom of the second connecting portion 310 as shown in Figure 14 , or it can be opened on the side wall of the second connecting portion 310.

[0121] Please refer to Figure 9 , as an example, the lightning protection wiring card slot 340 is located at the bottom of the clamping portion 320. This setting method makes the structure of the clamping block 300 simple, and the lightning protection wiring card slot 340 can hide the connected lightning protection wire 50 in the installation groove 33 of the installation substrate 30, thus having better concealment.

[0122] Please refer to Figures 10 to 13 , considering that the contact surface between the pressing surface 221 and the outer wall of the front frame 1111 is relatively large, in order to more reliably break the contact area between the pressing surface 221 and the outer wall of the front frame 1111, optionally, both the pressing surface 221 and the outer wall of the front frame 1111 are provided with protruding structures 1112, and a plurality of protruding structures 1112 are arranged side by side along the width direction of the photovoltaic module 120 on the outer walls of the pressing surface 221 and the front frame 1111 respectively, thus presenting a toothed structure.

[0123] It can be understood that in this application, there are no restrictions on the distribution position and shape requirements of the protruding structures 1112, as long as they can break the contact of the insulating film.

[0124] Please refer to Figure 10 and Figure 11 , as an example, the protruding structures 1112 provided on the outer walls of the pressing surface 221 and the front frame 1111 are all sharp-pointed spines.

[0125] Please refer to Figure 12 and Figure 13As another example, one of the pressing surface 221 and the outer wall of the front frame 1111 is provided with a sharp-angled burr and the other is provided with a trapezoidal burr; for example, the protruding structure 1112 provided on the pressing surface 221 is a sharp-angled burr, and the protruding structure 1112 provided on the outer wall of the front frame 1111 is a trapezoidal burr. The burrs of the sharp-angled burr and the burrs of the trapezoidal burr are staggered.

[0126] In the above-mentioned setting method, the two top corners of the trapezoidal bulge form sharp contact with the side wall of the pointed bulge, and the top corner of the pointed bulge forms sharp contact with the transition surface between the trapezoidal bulge, which can better play a destructive role and make the conductive performance between the frame 110 and the pressing piece 200 more reliable.

[0127] Considering that in the photovoltaic module lightning protection installation system 10 , the pressing piece 200 and the clamping block 300 cooperate to clamp the frame 110 and the clamping plate 34 therebetween, so that there is usually a certain distance between the pressing piece 200 and the clamping block 300 .

[0128] As an example, the first connection part 210 has a first positioning part 211 at the bottom, and the second connection part 310 has a second positioning part 311 at the top for abutting against the first positioning part 211. At least one of the first positioning part 211 and the second positioning part 311 is provided with a protruding structure 1112 for destroying the insulating film. Under this arrangement, the insulating film between the first positioning part 211 and the second positioning part 311 is destroyed by the protruding structure 1112, so that electrical contact can be achieved better; the second positioning part 311 provides support for the first connection part 210 by abutting against the first positioning part 211, and also makes the cooperation between the first connection part 210 and the second connection part 310 more stable.

[0129] It should be noted that, in the present application, the electrical contact method between the first connection part 210 and the second connection part 310 is not limited, for example, the fastener 400 can also be set as a threaded structure such as a bolt. In this setting, the fastener 400 is threadedly connected to the first connection part 210 and the second connection part 310 respectively, and the friction during the threaded connection pierces the insulating film, so that the fastener 400 is used as a conductive medium to achieve electrical contact between the first connection part 210 and the second connection part 310.

[0130] Regarding the manner of setting the positioning portion for electrical contact, in some exemplary embodiments, one of the first positioning portion 211 and the second positioning portion 311 is a recessed positioning groove and the other is a convex positioning support rod, for example, the first positioning portion 211 is a recessed positioning groove and the second positioning portion 311 is a convex positioning support rod. The free end of the positioning support rod abuts against the groove wall of the positioning groove, and the free end of the positioning support rod is provided with a protruding structure 1112.

[0131] In the above setting method, the positioning of the positioning groove and the positioning support rod is convenient, which facilitates the positioning of the pressing member 200 and the clamping block 300 during installation. Moreover, this setting method results in a small contact area and a large contact pressure between the first positioning portion 211 and the second positioning portion 311, which is beneficial to better break the insulating film at the contact portion and makes the electrical conductivity between the pressing member 200 and the clamping block 300 more reliable.

[0132] Considering that during the installation process, when the pressing member 200 cooperates with the frame 110 and the clamping block 300, they usually cannot be directly aligned and need to adjust the angle. Further, a contact ball head is provided at the free end of the positioning support rod, and the protruding structure 1112 is provided on the contact ball head; the positioning groove is an arc-shaped groove matching the contact ball head. In this setting method, the ball head and the arc-shaped groove facilitate the guiding adjustment of their relative positions during installation positioning, making the installation more convenient.

[0133] It should be noted that in this application, the shapes of the pressing member 200 and the clamping block 300 are not limited, and the shapes of the first positioning portion and the second positioning portion are not limited, as long as the frame 110 and the pressing member 200, and the pressing member 200 and the clamping block 300 can achieve good abutting cooperation to break the insulating film.

[0134] As a first example, as Figure 4 and Figure 5 and Figure 7 shown, the pressing member 200 has an overall flat plate structure. Among them, in the height direction, the size of the rod body of the positioning support rod is larger than the size of the ball head, so that the positioning support rod has a relatively large height as a whole, and the ball head of the positioning support rod can better abut against the arc-shaped groove.

[0135] As a second example, please refer to Figure 14 , and its setting method is basically the same as Figure 7 , the main difference is that: the pressing portion 220 of the pressing member 200 is set to an inverted L shape, and the pressing portion 220 is higher than the first connecting portion 210, so that the distance between the first connecting portion 210 and the second connecting portion 310 is reduced in the assembled state. In this setting method, the overall height of the second positioning portion 311 is relatively small, and in the height direction, the size of the rod body is equivalent to the size of the ball head.

[0136] As a third example, please refer to Figure 15 , and its setting method is basically the same as Figure 13 , the main difference is that: in the photovoltaic roof 1, the clamping plate body 34 is a structure in the shape of a single character formed by two-layer structures bonded together. Since the height of the clamping plate body is reduced, the distance between the first connecting portion 210 and the second connecting portion 310 is reduced, so the pressing portion 220 of the pressing member 200 does not need to be set to an inverted L shape, and the pressing member 200 has an overall flat plate structure.

[0137] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various modifications and variations can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A photovoltaic roof, It is characterized in that include: A photovoltaic module lightning protection installation system, the photovoltaic module lightning protection installation system comprises a photovoltaic module with a frame, a pressing piece and a clamping block, the photovoltaic module with a frame comprises a frame and a photovoltaic module; the frame has an installation cavity, the long side of the photovoltaic module is embedded in the installation cavity, and the part of the frame of the frame located on the front of the photovoltaic module is a front frame; the pressing piece has a first connecting part and a pressing part connected to each other, and the bottom of the pressing part has a pressing surface for abutting the front frame; the clamping block has a second connecting part and a clamping part connected to each other; the first connecting part and the second connecting part are detachably connected, and the two are in electrical contact; at least one of the pressing surface and the outer wall of the front frame is provided with a protruding structure for destroying an insulating film; when the first connecting part is connected to the second connecting part and the pressing surface is abutted against the front frame, the clamping part is located on the back of the frame, and the clamping part and the frame are relatively distributed and enclose a clamping gap; A mounting support, wherein the mounting support is fixed to the roof; A mounting substrate, wherein the length direction of the mounting substrate corresponds to the length direction of the photovoltaic module; A lap joint structure, the lap joint structure is mounted on the mounting support, and the lap joint structure is connected to the mounting base plate through an inclined section; the lap joint structure is surrounded by a mounting groove, the opening of the mounting groove faces away from the mounting base plate, the plate body of the lap joint structure located at the top of the mounting groove is a clamping plate body, and the opposite ends of the inclined section are respectively connected to the clamping plate body and the mounting base plate; A lightning protection wire, the lightning protection wire is electrically connected to the card block; The clamping plate body is accommodated in the clamping gap, the clamping portion extends into the mounting groove and abuts against the bottom of the clamping plate body, and the frame abuts against the top of the clamping plate body.

2. The photovoltaic roof according to claim 1, It is characterized in that The pressing surface and the outer wall of the front frame are both provided with the protruding structure.

3. The photovoltaic roof according to claim 2, It is characterized in that The protruding structure is a burr, one of the pressing surface and the outer wall of the front frame is provided with a sharp-angled burr and the other is provided with a trapezoidal burr, and the burr of the sharp-angled burr is staggered with the burr of the trapezoidal burr.

4. The photovoltaic roof according to claim 1, It is characterized in that The bottom of the first connecting part has a first positioning part, and the top of the second connecting part has a second positioning part for abutting against the first positioning part; at least one of the first positioning part and the second positioning part is provided with the protruding structure for destroying the insulating film so that the first connecting part and the second connecting part are in electrical contact.

5. The photovoltaic roof according to claim 4, It is characterized in that One of the first positioning portion and the second positioning portion is a recessed positioning groove and the other is a convex positioning support rod, the free end of the positioning support rod abuts against the groove wall of the positioning groove, and the free end of the positioning support rod is provided with the convex structure.

6. The photovoltaic roof according to claim 5, It is characterized in that a ball head for abutting is arranged at the free end of the positioning support rod, and the protruding structure is arranged on the ball head for abutting; the positioning groove is an arc-shaped groove matching the ball head for abutting.

7. The photovoltaic roof according to any one of claims 1 to 6, It is characterized in that the clamping block is provided with a lightning protection wiring card slot, satisfying one of the following conditions (a) to (b): (a) A wiring cavity is formed inside the second connecting portion, and the lightning protection wiring card slot is located in the wiring cavity; (b) The lightning protection wiring card slot is located at the bottom of the clamping portion.

8. The photovoltaic roof according to any one of claims 1 to 6, It is characterized in that the frame body of the frame is a U-shaped frame body, and the U-shaped frame body encloses the installation cavity.

9. The photovoltaic roof according to claim 1, It is characterized in that a plurality of the framed photovoltaic modules arranged side by side along the length direction of the photovoltaic module are in a row; in each row of the framed photovoltaic modules, the lightning protection wires sequentially connect the clamping blocks of the plurality of framed photovoltaic modules in series along the length direction of the photovoltaic module.

10. The photovoltaic roof according to claim 1, It is characterized in that when two adjacent overlapping structures are installed on the installation support, a wound edge-locking structure is formed; the distance from the top of the edge-locking structure to the roof is greater than the distance from the top of the photovoltaic module lightning protection installation system to the roof.

11. The photovoltaic roof according to claim 1, It is characterized in that a support portion protrudes from the middle of the installation substrate; the support portion abuts against the middle of the back surface of the photovoltaic module; the photovoltaic roof further includes a support bracket, and the support portion is installed on the support bracket.

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