Photovoltaic module system and photovoltaic roof

Abstract

The invention relates to a photovoltaic module system and a photovoltaic roof, and the photovoltaic module system comprises a waterproof support which comprises a middle longitudinal beam and an edge cross beam; the at least two photovoltaic modules are transversely spliced and arranged on the waterproof support, the peripheral side edges of the photovoltaic modules comprise longitudinal edges and transverse edges, splicing parts are formed between the longitudinal edges, close to each other, of every two adjacent photovoltaic modules, the splicing parts are connected with the corresponding middle longitudinal beams, first drainage grooves in butt joint with the splicing parts are formed in the middle longitudinal beams, and second drainage grooves in butt joint with the splicing parts are formed in the middle longitudinal beams; the transverse edges of all the photovoltaic modules are connected with edge cross beams, third drainage grooves in butt joint with the transverse edges are formed in the edge cross beams, and the first drainage grooves are communicated with the third drainage grooves; and the cleaning device is arranged on the waterproof bracket and is configured to be used for spraying and / or brushing and / or scraping the lighting surface of the photovoltaic module. According to the photovoltaic module system, the waterproof performance and the decontamination performance of the photovoltaic roof are improved, and then the power generation efficiency of the photovoltaic roof is improved.

Description

Technical Field

[0001] The present application relates to the technical field of photovoltaic power generation equipment, and particularly to a photovoltaic module system and a photovoltaic roof. Background Art

[0002] Photovoltaic modules are the core components of solar power generation, responsible for converting solar energy into clean electric energy, and are an important part of the new energy field today. In the construction of photovoltaic systems, buildings, especially roofs, have become excellent carriers for photovoltaic modules. With the close combination of photovoltaics and buildings, photovoltaic roofs have become an important application form.

[0003] In a photovoltaic roof, the photovoltaic modules will be part of the building roof structure. It is often necessary to set up a waterproof bracket on the photovoltaic roof to meet the building waterproof requirements and ensure the stable power generation of the photovoltaic modules. The photovoltaic roof is exposed to the outdoor environment for a long time, and the photovoltaic modules are extremely prone to dirt. Moreover, in rainy days, due to the poor waterproof performance of the photovoltaic roof, water leakage is likely to occur at the splicing and caulking joints of the photovoltaic modules, which will affect the power generation efficiency of the photovoltaic modules. Summary of the Invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present application provides a photovoltaic module system and a photovoltaic roof, which improve the waterproof performance and dirt cleaning performance of the photovoltaic roof, and correspondingly improve the sewage discharge efficiency of the photovoltaic roof, thereby improving the power generation efficiency of the photovoltaic roof.

[0005] In a first aspect, the present application provides a photovoltaic module system, including:

[0006] A waterproof bracket, including a middle longitudinal beam and an edge cross beam;

[0007] At least two photovoltaic modules are arranged horizontally and spliced on the waterproof bracket. The peripheral edges of the photovoltaic modules include longitudinal edges and transverse edges. A splicing part is formed between the longitudinal edges of two adjacent photovoltaic modules that are close to each other. The splicing part is connected to the corresponding middle longitudinal beam, and a first drainage groove is formed in the middle longitudinal beam and is docked with the splicing part. The transverse edges of all the photovoltaic modules are connected to the edge cross beam, and a third drainage groove is formed inside the edge cross beam and is docked with the transverse edge. The first drainage groove and the third drainage groove are communicated;

[0008] A cleaning device is arranged on the waterproof bracket and is configured to spray and / or brush and / or scrape the light-receiving surface of the photovoltaic module.

[0009] The photovoltaic module system according to the first aspect of the present application has at least the following beneficial effects:

[0010] The photovoltaic module system of the present application connects the splicing part between two adjacent photovoltaic modules correspondingly through the middle longitudinal beam of the waterproof bracket, and makes the first drainage groove on the middle longitudinal beam dock with the splicing part, so that the first drainage groove can receive dirt such as dust particles and rainwater falling from the splicing part between two adjacent photovoltaic modules, playing a role in waterproofing and sewage discharge at the splicing part between adjacent photovoltaic modules; the edge cross beam of the waterproof bracket correspondingly connects the transverse edges of all the photovoltaic modules, and makes the third drainage groove on the edge cross beam dock with the transverse edges of all the photovoltaic modules, so that the third drainage groove can receive dirt such as dust particles and rainwater flowing down from the light-receiving surface of the photovoltaic module. At the same time, the third drainage groove is communicated with all the first drainage grooves, so that the dirt in the first drainage groove can flow into the third drainage groove and be discharged together through the third drainage groove, improving the cleaning efficiency; in addition, by cooperating with the cleaning device to spray and / or brush and / or scrape the light-receiving surface of the photovoltaic module, the dirt such as dust particles and rainwater on the light-receiving surface of the photovoltaic module can be accelerated to flow into the third drainage groove and finally be discharged through the third drainage groove. In this way, the waterproof performance and cleaning performance of the photovoltaic module system are improved, and the sewage discharge efficiency of the photovoltaic module system is correspondingly improved, thereby improving the power generation efficiency of the photovoltaic module system.

[0011] In some embodiments, the photovoltaic module system further includes a first water-blocking member, the first water-blocking member includes a covering portion and a first water-blocking portion connected to the covering portion and extending to the middle longitudinal beam, the covering portion covers the splicing part and is connected to the light-receiving surface of the photovoltaic module, and the first water-blocking portion surrounds the opening of the first drainage groove.

[0012] In some embodiments, the photovoltaic module system further includes a third water-blocking member, the third water-blocking member includes a second covering portion and a second guiding portion connected to the second covering portion and extending to the edge cross beam, the second covering portion covers the transverse edges of all the photovoltaic modules, and the second guiding portion docks with the third drainage groove.

[0013] In some embodiments, the second guiding portion includes a second guiding surface inclined towards the third drainage groove and a second folding edge bent relative to the second guiding surface, the second guiding surface is connected to the second covering portion in a transitional manner, and the second folding edge is hermetically connected to the edge cross beam.

[0014] In some embodiments, the waterproof bracket further includes an edge longitudinal beam, the photovoltaic module system further includes a second water-blocking member, the second water-blocking member includes a first covering portion and a first guiding portion connected to the first covering portion and extending to the edge longitudinal beam, the first covering portion covers the longitudinal edges of the photovoltaic modules at the farthest position in the transverse direction, a second drainage groove docked with the first guiding portion is formed inside the edge longitudinal beam, and the second drainage groove is communicated with the third drainage groove.

[0015] In some embodiments, the first diversion part includes a first diversion surface inclined towards the second drain groove and a first folded edge bent relative to the first diversion surface. The first diversion surface is transitionally connected to the first covering part, and the first folded edge is sealingly connected to the edge longitudinal beam.

[0016] In some embodiments, the cleaning device includes a first mounting rod, a spraying member and a brushing member that are circumferentially spaced apart on the outer wall of the first mounting rod. The first mounting rod extends along the longitudinal direction of the photovoltaic module and faces the light-receiving surface of the photovoltaic module. The first mounting rod is configured to be movable along the transverse direction and rotatable about its own axis. The spraying member and the brushing member are respectively used for spraying and brushing the light-receiving surface.

[0017] In some embodiments, the spraying member extends along the length direction of the first mounting rod; and / or, the brushing member extends along the length direction of the first mounting rod.

[0018] In some embodiments, the cleaning device further includes a scraping member. The scraping member, the spraying member and the brushing member are circumferentially spaced apart on the outer wall of the first mounting rod. The scraping member is used for scraping the light-receiving surface.

[0019] In some embodiments, the spraying member is provided with a plurality of first nozzles spaced apart along the longitudinal direction and / or a plurality of second nozzles spaced apart along the longitudinal direction. The first nozzles are used for spraying a cleaning agent towards the light-receiving surface, and the second nozzles are used for pneumatically flushing the light-receiving surface.

[0020] In some embodiments, the cleaning device further includes a first driving member for driving the first mounting rod to rotate about its own axis;

[0021] The photovoltaic module system further includes a controller and a first detection device. The first detection device is used for acquiring images of the light-receiving surfaces of all the photovoltaic modules to judge the degree of dirt on the light-receiving surfaces. The first detection device, the first driving member, the spraying member and the brushing member are all communicatively connected to the controller.

[0022] In some embodiments, the photovoltaic module system further includes a dredging device provided on the edge cross beam. The dredging device includes a dirt dredging member provided in the third drain groove. The dirt dredging member can move along the third drain groove to dredge the third drain groove and export the dirt in the third drain groove.

[0023] In some embodiments, a plurality of third nozzles are provided at circumferential intervals on the outer wall of the dirt-repellent member, and all of the third nozzles are directed toward different positions of the inner wall of the third drainage groove, and the third nozzles are used to spray high-pressure water flow and / or high-pressure air flow to flush the inner wall of the third drainage groove.

[0024] In some embodiments, the dredging device further includes a third driving member, and the third driving member is used to drive the dirt-removing member to move along the third drainage groove;

[0025] The photovoltaic component system further includes a second detection device, which is used to sense whether the use environment of the photovoltaic component is rainy weather, and the third driving member is communicatively connected with the second detection device.

[0026] In some embodiments, the photovoltaic module system further includes a shading device disposed on the edge beam, the shading device includes a plurality of shading blades distributed along the transverse direction and opposite to the backlight surface of the photovoltaic module, the shading blades having a flattened state parallel to the backlight surface and a light-transmitting state not parallel to the backlight surface;

[0027] Among them, when all the shading blades are in the flattened state, all the shading blades form a shading surface, and the vertical projections of the backlight surfaces of all the photovoltaic components relative to the shading surface are within the shading surface; when any of the shading blades is in the light-transmitting state, a light-transmitting gap is formed between the shading blade in the light-transmitting state and the adjacent shading blades.

[0028] In some embodiments, the light shielding blade is configured to be rotatable around itself to switch between the flattened state and the light-transmitting state.

[0029] In some embodiments, the shading device also includes a third mounting rod extending along the transverse direction, all of the shading blades are slidably connected to the third mounting rod, and the shading blades have a vertical state relative to the backlight surface. All of the shading blades can maintain the vertical state and move along the third mounting rod to the end of the third mounting rod.

[0030] In some embodiments, a reflective coating is provided on a side of the shading blade close to the backlight surface.

[0031] In some embodiments, the photovoltaic module system also includes insulating glass, which is arranged on the waterproof bracket and is parallel to the backlight surfaces of all the photovoltaic modules and distributed at intervals. An air cavity is formed between the insulating glass and the backlight surfaces of all the photovoltaic modules, and a vacuum cavity is formed inside the insulating glass.

[0032] Second aspect, the present application provides a photovoltaic roof, which includes the photovoltaic module system described above, and the photovoltaic modules are installed on the roof through the waterproof brackets.

[0033] The photovoltaic roof according to the second aspect of the present application has at least the following beneficial effects:

[0034] Since the photovoltaic roof of the present application is configured with the above-mentioned photovoltaic module system, it also has the same technical effects brought by this photovoltaic module system, that is, it has better waterproof performance and dirt cleaning performance, and has better power generation efficiency.

[0035] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the following specifically illustrates the specific embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. Moreover, in all the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0037] Figure 1 is a schematic structural diagram of the photovoltaic roof according to the embodiment of the present application.

[0038] Figure 2 is a partial structural schematic Figure 1 .

[0039] Figure 3 is Figure 2 the corresponding cross-sectional structural schematic diagram.

[0040] Figure 4 is Figure 3 the partial enlarged view at A in

[0041] Figure 5 is a partial structural schematic Figure 2 .

[0042] Figure 6 is Figure 5 the partial enlarged view at B in

[0043] Figure 7 is Figure 5 the partial enlarged view at C in

[0044] Figure 8 is a partial structural schematicFigure 3 .

[0045] Figure 9 for Figure 8 A partial enlarged view of point D in the middle.

[0046] Figure 10 for Figure 8 Schematic diagram of the corresponding cross-section structure.

[0047] Figure 11 for Figure 10 A partial enlarged view of point E in the middle.

[0048] Figure 12 This is a schematic diagram of the structure of the shading blades according to an embodiment of the present application.

[0049] Figure 13 A schematic diagram of a partial structure of a photovoltaic module system according to an embodiment of the present application Figure 4 .

[0050] Figure 14 for Figure 13 Schematic diagram of the corresponding cross-section structure.

[0051] Figure 15 for Figure 14 A partial enlarged view of point F in the middle.

[0052] Description of the drawings: waterproof bracket 100; middle longitudinal beam 110; first drainage groove 111; edge longitudinal beam 120; second drainage groove 121; second positioning plate 122; edge crossbeam 130; third drainage groove 131; first positioning plate 132; mounting groove 133; fourth sealing strip 140; photovoltaic module 200; lighting surface 201; backlight surface 202; longitudinal edge 210; transverse edge 220; splicing part 230; first water blocking member 300; covering part 310; first water blocking part 320; laminating groove 330; first sealing strip 340; second water blocking member 400; first covering part 410; first flow guiding part 420; first flow guiding surface 421; first folding edge 422; third sealing strip 430; third ... Water part 500; second covering part 510; second guide part 520; second guide surface 521; second folding edge 522; second sealing strip 530; cleaning device 600; first mounting rod 610; spraying part 620; brushing part 630; scraping part 640; first driving part 650; second driving part 660; second transmission rod 661; unblocking device 700; dirt removing part 710; third nozzle 711; third driving part 720; third transmission rod 721; shading device 800; shading blade 810; third mounting rod 820; fourth driving part 830; roof 900; first detection device 10; second detection device 20; insulating glass 30; vacuum chamber 31; air chamber 40; horizontal X; vertical Y. DETAILED DESCRIPTION

[0053] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0054] In the description of the present application, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the accompanying drawings. 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 therefore should not be construed as a limitation to the present application.

[0055] In addition, if there are terms such as "first" and "second", these terms are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present application, if there is a term "plurality", the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0056] In the present application, unless otherwise clearly specified and limited, if there are terms such as "installation", "connection", "connection", "fixation", etc., these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. 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.

[0057] In this application, unless otherwise clearly specified and defined, when a first feature is described as being "on" or "under" a second feature or the like, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0058] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. If an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. If present, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0059] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 8 and Figure 9 , embodiments of the present application provide a photovoltaic module system, which includes a waterproof bracket 100, a cleaning device 600 and at least two photovoltaic modules 200.

[0060] The waterproof bracket 100 includes an intermediate longitudinal beam 110 and an edge cross beam 130.

[0061] All the photovoltaic modules 200 are arranged along the transverse direction X and spliced on the waterproof bracket 100. The peripheral edges of the photovoltaic module 200 include a longitudinal edge 210 and a transverse edge 220. A splicing portion 230 is formed between the longitudinal edges 210 of two adjacent photovoltaic modules 200 that are close to each other. The splicing portion 230 is connected to the corresponding intermediate longitudinal beam 110, and a first drainage groove 111 for docking with the splicing portion 230 is formed inside the intermediate longitudinal beam 110. The transverse edges 220 of all the photovoltaic modules 200 are connected to the edge cross beam 130, and a third drainage groove 131 for docking with the transverse edge 220 is formed inside the edge cross beam 130. The first drainage groove 111 and the third drainage groove 131 are communicated.

[0062] The cleaning device 600 is disposed on the waterproof bracket 100, and the cleaning device 600 is configured to spray and / or brush and / or scrape the light-receiving surface 201 of the photovoltaic module 200.

[0063] It should be noted that in this application, seeFigure 2 The photovoltaic module 200 can be a rectangular photovoltaic glass, specifically a special material structure that encapsulates solar cells between glass layers, generates electricity through solar radiation, and is equipped with a current extraction device and a cable to achieve solar power generation. The lighting surface 201 of the photovoltaic module 200 refers to the surface of the photovoltaic module 200 facing the sunlight, and the backlight surface 202 of the photovoltaic module 200 refers to the surface of the photovoltaic module 200 facing away from the sunlight.

[0064] In the present application, the transverse direction X refers to the length direction or the width direction of the photovoltaic component 200 , and correspondingly, the longitudinal direction Y refers to the width direction or the length direction of the photovoltaic component 200 .

[0065] See also Figure 1 , all photovoltaic modules 200 can be installed on the roof 900 through the waterproof bracket 100, directly replacing the roof material, and integrated with the roof building structure. Of course, all photovoltaic modules 200 can also be fixedly installed on the roof 900 such as roof tiles or metal roofs through the waterproof bracket 100. When the roof 900 is a sloping roof, the photovoltaic modules 200 are correspondingly installed at an angle, and when the roof 900 is a flat roof, the photovoltaic modules 200 are correspondingly installed horizontally. In the embodiment of the present application, the photovoltaic modules 200 directly replace the roof material, and are obliquely assembled with the roof building structure through the waterproof bracket 100 to ensure the integrity of the installation.

[0066] It should also be noted that in the present application, when all photovoltaic modules 200 are spliced ​​and arranged on the waterproof bracket 100 along the horizontal X, the horizontal edges 220 of all photovoltaic modules 200 on the same side are connected in sequence to form a total horizontal edge. After all photovoltaic modules 200 are spliced, two total horizontal edges relatively distributed along the longitudinal Y are formed. Correspondingly, there are two edge beams 130, which are respectively close to and connect the two total horizontal edges. In addition, a splicing portion 230 is formed between the longitudinal edges 210 of two adjacent photovoltaic modules 200 that are close to each other. The number of splicing portions 230 is the same as that of the intermediate longitudinal beams 110. It is easy to understand that the number of the intermediate longitudinal beams 110 is one less than the number of photovoltaic modules 200.

[0067] In this application, a splicing portion 230 is formed between the longitudinally adjacent edges 210 of two adjacent photovoltaic modules 200. The splicing portion 230 refers to the splicing connection between two adjacent photovoltaic modules 200. The middle longitudinal beam 110 is correspondingly arranged below the splicing portion 230. A first drainage groove 111 that is docked with the splicing portion 230 is formed inside the middle longitudinal beam 110. It can be understood that the first drainage groove 111 is opened on the middle longitudinal beam 110, and its opening faces the splicing portion 230. The first drainage groove 111 is located below the splicing portion 230 and extends along the longitudinal direction Y. The length of the first drainage groove 111 is basically the same as the longitudinal length of the photovoltaic module 200, so that the area of the first drainage groove 111 is docked with the entire splicing portion 230. The first drainage groove 111 is used to receive dirt such as dust particles and rainwater falling from the splicing portion 230, mainly to receive the rainwater overflowing from the splicing portion 230, and plays a role in waterproofing and sewage discharge at the splicing portion 230 between adjacent photovoltaic modules 200.

[0068] The connection of the transverse edges 220 of all the photovoltaic modules 200 to the edge cross beam 130 means that the transverse edges 220 on the same side of all the photovoltaic modules 200 are connected to the corresponding edge cross beam 130, that is, the extension length of the edge cross beam 130 along the transverse direction X is basically the same as the transverse length of all the photovoltaic modules 200. A third drainage groove 131 that is docked with the transverse edge 220 is formed inside the edge cross beam 130. It can be understood that the third drainage groove 131 is opened on the edge cross beam 130, and its opening faces the transverse edges 220 of all the photovoltaic modules 200. The length of the third drainage groove 131 is basically the same as the sum of the transverse edges 220 of all the photovoltaic modules 200, so that the area of the third drainage groove 131 is docked with the transverse edges 220 of all the photovoltaic modules 200. Moreover, it should be understood that the third drainage groove 131 communicates with all the first drainage grooves 111. The third drainage groove 131 is the main drainage path, and all the first drainage grooves 111 are the drainage branch paths.

[0069] It can be understood that the dirt such as dust particles and rainwater on the light-receiving surface 201 of the photovoltaic module 200 can flow into the third drainage groove 131 and be received by the third drainage groove 131, and then be discharged through the third drainage groove 131. At the same time, the dirt such as dust particles and rainwater in all the first drainage grooves 111 can flow into the third drainage groove 131 and also be discharged through the third drainage groove 131. In this way, efficient cleaning of the dirt on the light-receiving surface 201 of the photovoltaic module 200 is achieved.

[0070] In this application, refer to Figure 8 and Figure 9, The cleaning device 600 is disposed on the waterproof bracket 100, and the cleaning end of the cleaning device 600 faces the light-receiving surface 201 of the photovoltaic module 200. The cleaning device 600 can be a single cleaning part, such as a movable spray head, a movable brush head, a movable scraper, etc., which respectively clean the light-receiving surface 201 of the photovoltaic module 200 by means of spraying, brushing, and scraping. Of course, the cleaning device 600 can also be an integrated cleaning part, such as a cleaning part integrated with structures such as a movable spray head, a movable brush head, and a movable scraper, which can clean the light-receiving surface 201 of the photovoltaic module 200 by means of spraying, brushing, and scraping in sequence or simultaneously.

[0071] By spraying and / or brushing and / or scraping the light-receiving surface 201 of the photovoltaic module 200 through the cleaning device 600, dust particles, rainwater and other dirt on the light-receiving surface 201 of the photovoltaic module 200 can flow to the lateral edge 220 of the photovoltaic module 200, and then flow into the third drainage groove 131 on the lateral edge 220, and finally be discharged through the third drainage groove 131.

[0072] It is not difficult to understand that in the photovoltaic module system of the embodiment of the present application, the middle longitudinal beam 110 of the waterproof bracket 100 correspondingly connects the splicing part 230 between two adjacent photovoltaic modules 200, and the first drainage groove 111 on the middle longitudinal beam 110 is docked with the splicing part 230, so that the first drainage groove 111 can receive dust particles, rainwater and other dirt falling from the splicing part 230 between two adjacent photovoltaic modules 200, playing a role in waterproofing and sewage discharge at the splicing part 230 between adjacent photovoltaic modules 200; the edge cross beam 130 of the waterproof bracket 100 correspondingly connects the lateral edges 220 of all the photovoltaic modules 200, and the third drainage groove 131 on the edge cross beam 130 is docked with the lateral edges 220 of all the photovoltaic modules 200, so that the third drainage groove 131 can receive dust particles, rainwater and other dirt flowing down from the light-receiving surface 201 of the photovoltaic module 200. At the same time, the third drainage groove 131 is communicated with all the first drainage grooves 111, so that the dirt in the first drainage groove 111 can flow into the third drainage groove 131 and be discharged together through the third drainage groove 131, improving the sewage cleaning efficiency; in addition, cooperating with the cleaning device 600 to spray and / or brush and / or scrape the light-receiving surface 201 of the photovoltaic module 200 can accelerate the flow of dust particles, rainwater and other dirt on the light-receiving surface 201 of the photovoltaic module 200 into the third drainage groove 131 and finally be discharged through the third drainage groove 131. In this way, the waterproof performance and sewage cleaning performance of the photovoltaic module system are improved, and the sewage discharge efficiency of the photovoltaic module system is correspondingly improved, thereby improving the power generation efficiency of the photovoltaic module system.

[0073] In some embodiments of the present application, see Figure 2 、 Figure 3 、 Figure 4 、 Figure 5And Figure 6 The photovoltaic module system further includes a first water-blocking member 300. The first water-blocking member 300 includes a covering portion 310 and a first water-blocking portion 320 that is connected to the covering portion 310 and extends to be connected to the intermediate longitudinal beam 110. The covering portion 310 covers the splicing portion 230 and is connected to the light-receiving surface 201 of the photovoltaic module 200. The first water-blocking portion 320 surrounds the opening of the first drainage groove 111.

[0074] Specifically, the number of the first water-blocking members 300 is the same as the number of the intermediate longitudinal beams 110, and there is a one-to-one correspondence between the two. The first water-blocking member 300 can be, but is not limited to, a metal structural member such as an aluminum alloy structure or a steel structure with good corrosion resistance and good structural strength. The first water-blocking member 300 is made from a plate-like structure through processes such as stamping and bending. The covering portion 310 and the first water-blocking portion 320 are an integrally formed structure.

[0075] The intermediate longitudinal beam 110 is located below the photovoltaic module 200. The covering portion 310 covers the splicing portion 230 between two adjacent photovoltaic modules 200, and the two opposite edges of the covering portion 310 along the transverse direction X are respectively attached and fixed to the longitudinal edges of the light-receiving surfaces of two adjacent photovoltaic modules 200. The first water-blocking portion 320 is arranged at the bottom of the covering portion 310 and extends downward to be connected to the opening edge of the first drainage groove 111 of the intermediate longitudinal beam 110, thereby surrounding the opening of the first drainage groove 111 to form a seal at the opening edge of the first drainage groove 111, preventing dirt and contaminants from leaking out through the connection between the first water-blocking member 300 and the intermediate longitudinal beam 110 and improving the waterproof and anti-fouling performance.

[0076] By covering the splicing portion 230 with the covering portion 310 of the first water-blocking member 300, the water leakage and dirt leakage of the splicing portion 230 between two adjacent photovoltaic modules 200 can be effectively reduced or even eliminated. By surrounding the opening of the first drainage groove 111 with the first water-blocking portion 320, the first water-blocking portion 320 plays a role of blocking water and dirt, enabling all the dirt and contaminants leaking from the splicing portion 230 to enter the first drainage groove 111, preventing the dirt and contaminants from flowing to the backlight surface 202 of the photovoltaic module 200 and into the room, and improving the waterproof and anti-fouling performance.

[0077] Furthermore, referring to Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 And Figure 6 The first water-blocking portion 320 and the covering portion 310 enclose two lamination grooves 330 that are spaced apart along the transverse direction X, and the mutually approaching longitudinal edges 210 of two adjacent photovoltaic modules 200 are respectively clamped in the two lamination grooves 330.

[0078] It should be noted that the first water-blocking part 320 and the covering part 310 are of an integrally formed structure. The lamination groove 330 formed by the two means that when the corresponding longitudinal edge 210 of the photovoltaic module 200 is placed into the lamination groove 330, the corresponding longitudinal edge 210 of the photovoltaic module 200 can be clamped and fixed in the lamination groove 330 by means of external mechanical pressure pressing, so as to be tightly covered by the lamination groove 330.

[0079] By forming two lamination grooves 330 spaced apart along the transverse direction X by the first water-blocking part 320 and the covering part 310, the corresponding longitudinal edges 210 of two adjacent photovoltaic modules 200 are respectively clamped in the two lamination grooves 330. On the one hand, the installation stability of the photovoltaic module 200 is enhanced, and the risk of loosening and slipping of the photovoltaic module 200 during use is reduced. On the other hand, the waterproof sealing effect on the corresponding longitudinal edges 210 of two adjacent photovoltaic modules 200 is improved, and it is avoided that water stains and other dirt flow to the backlight surface 202 of the photovoltaic module 200 through the longitudinal edge 210 of the photovoltaic module 200, thereby affecting the power generation efficiency of the photovoltaic module 200.

[0080] Furthermore, referring to Figure 2 、 Figure 3 and Figure 4 the first water-blocking part 320 is detachably connected to the middle longitudinal beam 110, and a first sealing strip 340 is provided at the connection between the first water-blocking part 320 and the middle longitudinal beam 110.

[0081] Specifically, referring to Figure 4 the first water-blocking part 320 can be fixedly connected to the middle longitudinal beam 110 through detachable structures such as bolts and expansion bolts. The bottom of the first water-blocking part 320 is adhesively connected to the opening edge of the first drainage groove 111 through the first sealing strip 340. The first sealing strip 340 can be but is not limited to an elastic silica gel strip, a sponge foam sealing strip, etc. It is easy to understand that in the present application, the splicing part 230 between two adjacent photovoltaic modules 200 is connected to the middle longitudinal beam 110 through the first water-blocking part 320.

[0082] By making the first water-blocking part 320 detachably connected to the middle longitudinal beam 110, it is convenient to disassemble and assemble the first water-blocking part 300 as a whole. By providing the first sealing strip 340 at the connection between the first water-blocking part 320 and the middle longitudinal beam 110, it can effectively prevent water and dirt from seeping at the connection between the first water-blocking part 320 and the middle longitudinal beam 110, and improve the waterproof and anti-fouling performance of the photovoltaic module system.

[0083] Referring to Figure 8 、 Figure 9 and Figure 10, in some embodiments of the present application, the photovoltaic module system further includes a third water blocking member 500. The third water blocking member 500 includes a second covering portion 510 and a second diversion portion 520 connected to the second covering portion 510 and extending to connect to the edge cross beam 130. The second covering portion 510 covers the lateral edges 220 of all the photovoltaic modules 200, and the second diversion portion 520 is docked with the third drainage groove 131.

[0084] Specifically, the third water blocking member 500 can be, but is not limited to, a metal structural member such as an aluminum alloy structure or a steel structure with good corrosion resistance and good structural strength. The third water blocking member 500 is made by processes such as stamping and bending from a plate-like structure, and the second covering portion 510 and the second diversion portion 520 are integrally formed structures. The second covering portion 510 can be configured as a lamination groove, an elastic covering groove, etc. with an opening facing the lateral edges 220 of the photovoltaic modules 200.

[0085] When installing the photovoltaic modules 200, the lateral edges 220 of all the photovoltaic modules 200 can be first placed inside the second covering portion 510, and then the second covering portion 510 can be tightly attached and covered the lateral edges 220 of all the photovoltaic modules 200 by means of external mechanical pressure pressing, so that the lateral edges 220 of all the photovoltaic modules 200 are clamped and fixed inside the second covering portion 510 to be tightly covered by the second covering portion 510.

[0086] The second diversion portion 520 connected to the second covering portion 510 and extending to connect to the edge cross beam 130 means that the opposite ends of the second diversion portion 520 are respectively connected to the second covering portion 510 and the edge cross beam 130. Specifically, one end of the second diversion portion 520 is connected to the outermost edge of the second covering portion 510 along the transverse direction X, and the other end is attached and connected to the opening edge of the third drainage groove 131, preventing water seepage and dirt infiltration at the connection between the second diversion portion 520 and the edge cross beam 130 and improving the waterproof and anti-fouling performance of the photovoltaic module system.

[0087] The second diversion portion 520 being docked with the third drainage groove 131 means that the second diversion portion 520 is partially or entirely within the third drainage groove 131.

[0088] It is not difficult to understand that by covering the lateral edges 220 of all the photovoltaic modules 200 with the second covering portion 510 of the third water blocking member 500, on the one hand, the installation stability of the lateral edges 220 of the photovoltaic modules 200 is enhanced, reducing the risk of loosening and slipping of the photovoltaic modules 200 during use. On the other hand, the waterproof and sealing performance of the lateral edges 220 of the photovoltaic modules 200 is improved, avoiding dirt such as water stains flowing to the backlight surface 202 of the photovoltaic modules 200 through the lateral edges 220 of the photovoltaic modules 200 and affecting the power generation efficiency of the photovoltaic modules 200.

[0089] By connecting the second diversion part 520 of the third water-blocking part 500 to the second covering part 510 and extending it to connect to the edge crossbeam 130, and making the second diversion part 520 dock with the third drainage groove 131, the dirt on the light-receiving surface 201 of the photovoltaic module 200 can flow along the light-receiving surface 201 to the second diversion part 520, and then flow into the third drainage groove 131 through the diversion of the second diversion part 520, and finally be discharged through the third drainage groove 131, further improving the drainage and dirt cleaning performance of the photovoltaic module system, correspondingly improving the sewage discharge efficiency of the photovoltaic module system, and further improving the power generation efficiency of the photovoltaic module system.

[0090] Further, referring to Figure 8 、 Figure 9 and Figure 10 ,the second diversion part 520 includes a second diversion surface 521 inclined towards the third drainage groove 131 and a second folded edge 522 bent relative to the second diversion surface 521. The second diversion surface 521 is transitionally connected to the second covering part 510, and the second folded edge 522 is sealingly connected to the edge crossbeam 130.

[0091] Specifically, referring to Figure 10 and Figure 11 ,the second diversion surface 521 can be a plane or an arc surface inclined relative to the third drainage groove 131. Correspondingly, the second diversion surface 521 can be transitionally connected to the second covering part 510 through an arc or a bent edge, and the second diversion surface 521 and the second folded edge 522 are integrally formed structures.

[0092] Part or all of the second diversion surface 521 is located in the third drainage groove 131. The second folded edge 522 is led out from the end of the second diversion surface 521 far away from the second covering part 510 and extends to connect to the opening edge of the third drainage groove 131. A first positioning plate 132 is convexly provided at the opening edge of the third drainage groove 131, and the second folded edge 522 is hooked on the bottom edge of the first positioning plate 132, reducing water seepage and dirt seepage at the connection between the second diversion part 520 and the edge crossbeam 130.

[0093] Through the above settings, after the dirt on the light-receiving surface 201 of the photovoltaic module 200 flows to the second diversion surface 521, it can flow to the third drainage groove 131 along the inclined second diversion surface 521. In this way, the flow of dirt is accelerated, and the cleaning efficiency of dirt is improved. Through the setting of the second folded edge 522 bent relative to the second diversion surface 521, the connection difficulty between the second diversion part 520 and the edge crossbeam 130 is reduced. By sealingly connecting the second folded edge 522 to the edge crossbeam 130, water seepage and dirt seepage at the connection between the second diversion part 520 and the edge crossbeam 130 are effectively reduced.

[0094] Further, referring to Figure 10 and Figure 11, the bottom end of the second covering part 510 is detachably connected to the edge cross beam 130, and a second sealing strip 530 is provided at the connection between the two.

[0095] In this way, it is convenient to disassemble and assemble the third water blocking member 500 as a whole. At the same time, the second sealing strip 530 can effectively prevent water and dirt from seeping through the connection between the second covering part 510 and the edge cross beam 130, further improving the waterproof and anti-fouling performance of the photovoltaic module system.

[0096] In some embodiments of the present application, refer to Figure 5 , Figure 7 , Figure 13 and Figure 14 , the waterproof bracket 100 further includes edge longitudinal beams 120, and the photovoltaic module system further includes a second water blocking member 400. The second water blocking member 400 includes a first covering part 410 and a first diversion part 420 connected to the first covering part 410 and extending to connect to the edge longitudinal beam 120. The first covering part 410 covers the longitudinal edge 210 of the photovoltaic module 200 located at the farthest position in the transverse direction X. A second drainage groove 121 is formed inside the edge longitudinal beam 120 and is docked with the first diversion part 420, and the second drainage groove 121 is communicated with the third drainage groove 131.

[0097] It should be noted that when all the photovoltaic modules 200 are arranged in a splicing manner along the transverse direction X, there are two edge longitudinal beams 120 and two second water blocking members 400, a total of two pairs. The two pairs of edge longitudinal beams 120 and second water blocking members 400 respectively correspond to the mutually remote longitudinal edges 210 of the two relatively remote photovoltaic modules 200 along the transverse direction X.

[0098] Specifically, the second water blocking member 400 can be, but is not limited to, a metal structural member such as an aluminum alloy structure or a steel structure with good corrosion resistance and good structural strength. The second water blocking member 400 is made by processes such as stamping and bending from a plate-like structure, and the first covering part 410 and the first diversion part 420 are integrally formed structures. The first covering part 410 can be configured as a lamination groove, an elastic covering groove, etc. with an opening facing the transverse edge 220 of the photovoltaic module 200.

[0099] When installing the photovoltaic module 200, the longitudinal edge 210 of the photovoltaic module 200 located at the farthest position in the transverse direction X can be correspondingly placed in the first covering part 410, and then the first covering part 410 is closely attached and covered with the longitudinal edge 210 by means of external mechanical pressure pressing, so that the longitudinal edge 210 of the photovoltaic module 200 is clamped and fixed in the first covering part 410 and is tightly covered by the first covering part 410.

[0100] The first diversion part 420 connected to the first covering part 410 and extending to connect to the edge longitudinal beam 120 means that the opposite ends of the first diversion part 420 are respectively connected to the first covering part 410 and the edge longitudinal beam 120. Specifically, one end of the first diversion part 420 is connected to the outermost edge of the first covering part 410 along the transverse direction X, and the other end is adhesively connected to the opening edge of the second drainage groove 121 on the edge longitudinal beam 120, preventing water seepage and dirt infiltration at the connection between the first diversion part 420 and the edge longitudinal beam 120, and improving the waterproof and anti-fouling performance of the photovoltaic module system.

[0101] The docking of the first diversion part 420 with the second drainage groove 121 means that the first diversion part 420 is partially or entirely located within the second drainage groove 121.

[0102] The formation of the second drainage groove 121 in the edge longitudinal beam 120 that docks with the first diversion part 420 can be understood as: the second drainage groove 121 is opened on the edge longitudinal beam 120, and its opening faces the first diversion part 420; the second drainage groove 121 extends along the longitudinal direction Y, and its length is basically the same as the longitudinal length of the photovoltaic module 200, so that the area of the second drainage groove 121 is docked with the longitudinal edge 210 of the photovoltaic module 200 at the farthest point in the transverse direction X.

[0103] It is easy to understand that the dust particles, rainwater and other dirt on the light-receiving surface 201 of all the photovoltaic modules 200 can also flow along the transverse direction X to the longitudinal edge 210 of the photovoltaic module 200 at the farthest point in the transverse direction X, and then flow to the second drainage groove 121 through the diversion of the first diversion part 420. By connecting the second drainage groove 121 with the third drainage groove 131, the dirt in the second drainage groove 121 can flow into the third drainage groove 131 and be discharged through the third drainage groove 131. In this way, it plays a role in waterproofing and sewage discharge for the outermost longitudinal edge 210 of all the photovoltaic modules 200.

[0104] It is not difficult to understand that by covering the longitudinal edge 210 of the photovoltaic module 200 at the farthest point in the transverse direction X with the first covering part 410 of the second water-blocking member 400, on the one hand, the installation stability of the outermost longitudinal edge 210 of all the photovoltaic modules 200 is strengthened, reducing the risk of loosening and slipping of the photovoltaic module 200 during use. On the other hand, the waterproof sealing performance of the outermost longitudinal edge 210 of all the photovoltaic modules 200 is improved, preventing water stains and other dirt from flowing to the backlight surface 202 of the photovoltaic module 200 through the longitudinal edge 210 at the outermost side of all the photovoltaic modules 200 and affecting the power generation efficiency of the photovoltaic module 200.

[0105] By connecting the first diversion part 420 of the second water-blocking part 400 to the first covering part 410 and extending it to connect to the edge longitudinal beam 120, and making the first diversion part 420 dock with the second drainage groove 121, the dirt on the light-receiving surface 201 of the photovoltaic module 200 can still flow along the light-receiving surface 201 to the first diversion part 420, and then through the diversion effect of the first diversion part 420, it flows into the second drainage groove 121, and finally converges into the third drainage groove 131 and is discharged through the third drainage groove 131, so that all the photovoltaic modules 200 are effectively waterproof-sealed and effectively drained of sewage, further improving the waterproof performance and dirt-removing performance of the photovoltaic module system, correspondingly improving the sewage discharge efficiency of the photovoltaic module system, and further improving the power generation efficiency of the photovoltaic module system.

[0106] Further, referring to Figure 5 、 Figure 7 、 Figure 13 and Figure 14 ,the first diversion part 420 includes a first diversion surface 421 inclined towards the second drainage groove 121 and a first folded edge 422 bent relative to the first diversion surface 421. The first diversion surface 421 is transitionally connected to the first covering part 410, and the first folded edge 422 is sealingly connected to the edge longitudinal beam 120.

[0107] Specifically, the first diversion surface 421 can be a plane or an arc surface inclined relative to the second drainage groove 121. Correspondingly, the first diversion surface 421 can be transitionally connected to the first covering part 410 through an arc or a bent edge, and the first diversion surface 421 and the first folded edge 422 are integrally formed structures.

[0108] Referring to Figure 14 and Figure 15 ,a part or all of the first diversion surface 421 is located in the second drainage groove 121. The first folded edge 422 is led out from the end of the first diversion surface 421 far from the first covering part 410 and extends to connect to the opening edge of the second drainage groove 121. A second positioning plate 122 protrudes from the opening edge of the second drainage groove 121, and the first folded edge 422 is hooked to the bottom edge of the second positioning plate 122, reducing water seepage and dirt seepage at the connection between the first diversion part 420 and the edge longitudinal beam 120.

[0109] Through the above settings, after the dirt on the light-receiving surface 201 of the photovoltaic module 200 flows to the first diversion surface 421, it can flow along the inclined first diversion surface 421 to the second drainage groove 121. In this way, the flow of dirt is accelerated, and the cleaning efficiency of dirt is improved. Through the setting of the first folded edge 422 bent relative to the first diversion surface 421, the connection difficulty between the first diversion part 420 and the edge longitudinal beam 120 is reduced. By sealingly connecting the first folded edge 422 to the edge longitudinal beam 120, water seepage and dirt seepage at the connection between the first diversion part 420 and the edge longitudinal beam 120 are effectively reduced.

[0110] Further, referring to Figure 14 and Figure 15 , the bottom end of the first covering portion 410 is detachably connected to the edge longitudinal beam 120, and a third sealing strip 430 is provided at the connection therebetween.

[0111] In this way, it is convenient to disassemble and assemble the second water blocking member 400 as a whole. At the same time, the third sealing strip 430 can effectively prevent water and dirt from seeping through the connection between the first covering portion 410 and the edge longitudinal beam 120, further improving the waterproof and anti-fouling performance of the photovoltaic module system.

[0112] In some embodiments of the present application, referring to Figure 8 , Figure 9 and Figure 10 , the cleaning device 600 includes a first mounting rod 610, a spraying member 620 and a brushing member 630 which are arranged at intervals along the circumferential direction on the outer wall of the first mounting rod 610. The first mounting rod 610 extends along the longitudinal direction Y of the photovoltaic module 200 and faces the light receiving surface 201 of the photovoltaic module 200. The first mounting rod 610 is configured to be movable along the transverse direction X and rotatable about itself. The spraying member 620 and the brushing member 630 are respectively used for spraying and brushing the light receiving surface 201.

[0113] Specifically, the first mounting rod 610 is arranged at intervals above the light receiving surface 201 of the photovoltaic module 200 and is parallel to the light receiving surface 201. The first mounting rod 610 can be, but is not limited to, a round rod, a square rod, etc.

[0114] The spraying member 620 refers to a structure that can spray high-pressure cleaning agent and / or high-pressure air flow. The cleaning agent can be clean water or other detergents with dirt cleaning ability. It sprays high-pressure cleaning agent and / or high-pressure air flow towards the light receiving surface 201, sprays and flushes loose dirt such as dust, bird droppings, and accumulated small water puddles on the light receiving surface 201, and can efficiently clean the light receiving surface 201 by spraying. The spraying member 620 can be, but is not limited to, a fan-shaped nozzle, a rotary nozzle, an atomizing nozzle, etc.

[0115] The brushing member 630 refers to a structure that removes adherent dirt (such as oil stains, water stains) and other dirt adhered to the light receiving surface 201 through physical friction. The brushing member 630 can be constructed as a brush structure with a vibration function. It can be, but is not limited to, a brush composed of nylon brush filaments, an ultra-fine fiber roller brush, etc. It has a strong ability to brush dirt and is not easy to scratch the light receiving surface 201 of the photovoltaic module 200.

[0116] The first mounting rod 610 rotates around itself, enabling the spraying and washing member 620 and the brushing member 630 to contact the light-receiving surface 201 of the photovoltaic module 200 in sequence. The spraying and washing member 620 can first perform a spraying and washing action on the light-receiving surface 201 to spray and wash loose dirt such as dust, bird droppings, and accumulated small water puddles on the light-receiving surface 201. Then, the brushing member 630 performs a brushing action on the light-receiving surface 201 to brush off the dirt adhered to the light-receiving surface 201. Subsequently, the spraying and washing member 620 performs another spraying and washing action. Of course, it is also possible to first make the brushing member 630 perform a brushing action on the light-receiving surface 201, then make the spraying and washing member 620 perform a spraying and washing action on the light-receiving surface 201, and then make the brushing member 630 perform another brushing action. In this way, the dirt on the light-receiving surface 201 of the photovoltaic module 200 is efficiently washed away and removed.

[0117] In addition, in the present application, the light-receiving surface 201 of the photovoltaic module 200 is inclined relative to the third drainage groove 131, and / or the light-receiving surface 201 of the photovoltaic module 200 is higher than the third drainage groove 131 of the bottom edge cross beam 130, which accelerates the flow of the dirt washed off the light-receiving surface 201 of the photovoltaic module 200 to the third drainage groove 131 and speeds up the sewage discharge rate.

[0118] It is not difficult to understand that through the cooperative setting of the first mounting rod 610, the spraying and washing member 620, and the brushing member 630 of the cleaning device 600, the first mounting rod 610 rotates around itself, enabling the spraying and washing member 620 and the brushing member 630 to contact the light-receiving surface 201 of the photovoltaic module 200 in sequence, and performing cleaning actions of spraying, brushing, spraying in sequence or brushing, spraying, brushing in sequence on the light-receiving surface 201. At the same time, the first mounting rod 610 also drives the spraying and washing member 620 and the brushing member 630 thereon to move along the transverse direction X, so that the cleaning areas of the spraying and washing member 620 and the brushing member 630 cover the entire light-receiving surface 201 of the photovoltaic module 200. In this way, the dirt on the entire light-receiving surface 201 of the photovoltaic module 200 is efficiently washed to the third drainage groove 131 and the second drainage groove 121 at the edge of the photovoltaic module 200, and the dirt is discharged through the third drainage groove 131, improving the sewage cleaning performance of the photovoltaic module system, correspondingly improving the sewage discharge efficiency of the photovoltaic module system, and further improving the power generation efficiency of the photovoltaic module system.

[0119] Specifically, referring again to Figure 8 、 Figure 9 and Figure 10 , the cleaning device 600 may include a first driving member 650. The first driving member 650 is installed on the edge cross beam 130 to avoid blocking the light-receiving surface 201 of the photovoltaic module 200. The output end of the first driving member 650 is connected to the end of the first mounting rod 610 to drive the first mounting rod 610 to rotate around itself. The first driving member 650 can be a rotational driving member such as a motor or a motor.

[0120] The cleaning device 600 also includes a second driving member 660, the driving end of which is connected to the first mounting rod 610 to drive the first mounting rod 610 to move along the horizontal direction X, so that the movement trajectory of the first mounting rod 610 and the spraying member 620 and the brushing member 630 thereon covers the lighting surface 201 of the entire photovoltaic module 200.

[0121] In order to simplify the overall structure of the first driving member 650 and the second driving member 660 and save the space occupied by the two, see Figure 8 , Figure 9 and Figure 10 The second driving member 660 includes a second sub-driving member (not shown in the figure), a second transmission rod 661 drivingly connected to the second sub-driving member, and a second limiting groove (not shown in the figure) provided on the side wall of the third drainage groove 131. The second transmission rod 661 extends along the horizontal direction X and can be driven by the second sub-driving member to rotate around itself. The length of the second transmission rod 661 is consistent with the length of the third drainage groove 131. The second sub-driving member can be a rotating driving member such as an electric motor. The first driving member 650 is sleeved on the second transmission rod 661 and is threadedly connected to the second transmission rod 661. The first driving member 650 is also slidably connected to the second limiting groove. The first driving member 650 can also be a rotating driving member such as an electric motor. It is easy to understand that the second driving member 660 as a whole can be understood as a screw transmission structure, which converts the rotational motion of the second sub-driving member into an accurate movement of the second driving member 660 in the horizontal direction X.

[0122] The above-mentioned structure is set so that the first driving member 650 only has the freedom of movement in the horizontal direction X, so that the first driving member 650 can not only drive the first mounting rod 610 to rotate, but also drive the first mounting rod 610 to move synchronously in the horizontal direction X. This not only simplifies the overall structure of the first driving member 650 and the second driving member 660, but also greatly reduces the space occupied by the cleaning device 600 as a whole in the photovoltaic component system, and greatly reduces the area of ​​the lighting surface 201 of the photovoltaic component 200 blocked by the cleaning device 600, which is beneficial to improving the power generation efficiency of the photovoltaic component system.

[0123] See also Figure 8 , Figure 9 and Figure 10 Further, the spray cleaning member 620 extends along the length direction of the first mounting rod 610 ; and / or, the brush cleaning member 630 extends along the length direction of the first mounting rod 610 .

[0124] With such an arrangement, since the first mounting rod 610 extends along the longitudinal direction Y, the overall length of the spraying and washing member 620 and / or the brushing member 630 also extends along the longitudinal direction Y. In combination with the fact that the spraying and washing member 620 and the brushing member 630 can also move along the transverse direction X driven by the first mounting rod 610, the spraying area of the spraying and washing member 620 and the brushing area of the brushing member 630 can cover various areas on the light-receiving surface 201 of the photovoltaic module 200, so that the light-receiving surface 201 can be cleaned more comprehensively and thoroughly, and the cleaning performance of the photovoltaic module system is further improved.

[0125] Furthermore, still referring to Figure 8 、 Figure 9 and Figure 10 Figure, the cleaning device 600 further includes a scraping member 640. The scraping member 640, the spraying and washing member 620, and the brushing member 630 are circumferentially spaced and arranged on the outer wall of the first mounting rod 610, and the scraping member 640 is used for scraping the light-receiving surface 201.

[0126] The scraping member 640 refers to a member that can physically rub and remove adhesive dirt and other contaminants adhered to the light-receiving surface 201. The scraping member 640 can be configured as a silica gel plate, a polyurethane scraper, or a rubber plate, which can scrape off dirt with strong adhesiveness (such as bird droppings, mud, etc.) on the light-receiving surface 201, and is not easy to scratch the light-receiving surface 201. It should be noted that the structural strength of the scraping member 640 is stronger than that of the brushing member 630, and it is easier to scrape off dirt with strong adhesiveness on the light-receiving surface 201 than the brushing member 630.

[0127] The scraping member 640 can also extend along the length direction of the first mounting rod 610, so that the scraping area of the scraping member 640 can cover various areas on the light-receiving surface 201 of the photovoltaic module 200.

[0128] Through the cooperation of the spraying and washing member 620, the brushing member 630, and the scraping member 640 circumferentially arranged on the outer wall of the first mounting rod 610, combined with the action of the first mounting rod 610 rotating around itself, the spraying and washing member 620, the brushing member 630, and the scraping member 640 contact the light-receiving surface 201 of the photovoltaic module 200 in sequence, and cleaning actions such as spraying, brushing, scraping, spraying or scraping, spraying, brushing, spraying or brushing, spraying, scraping, spraying are sequentially performed on the light-receiving surface 201.

[0129] At the same time, the first mounting rod 610 also drives the spraying member 620, the brushing member 630 and the scraping member 640 thereon to move along the horizontal X, so that the cleaning areas of the spraying member 620, the brushing member 630 and the scraping member 640 cover the lighting surfaces 201 of all photovoltaic modules 200. In this way, the dirt on the lighting surfaces 201 of all photovoltaic modules 200 can be efficiently washed to the third drainage groove 131 and the second drainage groove 121 at the edge of the photovoltaic module 200, so that the dirt is discharged through the third drainage groove 131, thereby improving the cleaning performance of the photovoltaic module system, and correspondingly improving the drainage efficiency of the photovoltaic module system, thereby improving the power generation efficiency of the photovoltaic module system.

[0130] Furthermore, the spray cleaning member 620 is provided with a plurality of first nozzles (not shown in the figure) distributed at intervals along the longitudinal direction Y and / or a plurality of second nozzles (not shown in the figure) distributed at intervals along the longitudinal direction Y. The first nozzles are used to spray cleaning agent toward the lighting surface 201, and the second nozzles are used to pneumatically flush the lighting surface 201.

[0131] The cleaning agent is a liquid, such as high-pressure water, and the second nozzle sprays high-pressure air flow.

[0132] For example, in one embodiment, a plurality of first nozzles spaced apart along the longitudinal direction Y are provided on the spraying member 620 . At this time, all the spraying members 620 spray high-pressure cleaning agents to flush the lighting surface 201 .

[0133] In another embodiment, a plurality of second nozzles spaced apart along the longitudinal direction Y are provided on the spraying member 620 . At this time, all the second nozzles spray high-pressure airflow to flush the lighting surface 201 .

[0134] For example, in one embodiment, a plurality of first nozzles and second nozzles are alternately provided on the spraying member 620 along the longitudinal direction Y. At this time, the spraying member 620 uses a combination of high-pressure liquid flow flushing and high-pressure air flow flushing to flush the dirt attached to the lighting surface 201. The high-pressure liquid flow sprayed by the first nozzle can effectively disperse the dirt attached to the lighting surface 201, and the high-pressure air flow sprayed by the second nozzle can produce tiny bubbles in the liquid detergent. When the bubbles burst, local high pressure is released to further peel off the stubborn dirt and dirt on the lighting surface 201. The combination of the two can improve the decontamination efficiency, and can accelerate the flow of dirt into the third drainage groove 131 and the second drainage groove 121 at the edge of the photovoltaic module 200, thereby improving the drainage efficiency.

[0135] See also Figure 8 , Figure 9 and Figure 10, in some embodiments of the present application, the cleaning device 600 further includes a first driving member 650 for driving the first mounting rod 610 to rotate around itself; the photovoltaic module system further includes a controller and a first detection device 10 for acquiring an image of the light-receiving surface 201 of all the photovoltaic modules 200 to determine the degree of dirt on the light-receiving surface 201. The first detection device 10, the first driving member 650, the spraying member 620, and the brushing member 630 are all communicatively connected to the controller.

[0136] Specifically, the first detection device 10 may be, but is not limited to, a CCD camera, a CMOS sensor, etc. The controller is also communicatively connected to the above-mentioned second driving member 660.

[0137] By acquiring the image of the light-receiving surface 201 of all the photovoltaic modules 200 through the first detection device 10, the controller determines the degree of dirt on the corresponding light-receiving surface 201 based on the image information obtained by the first detection device 10. Then, the controller controls the second driving member 660 to drive the first mounting rod 610 to move to the corresponding position of the light-receiving surface 201, and then controls the first driving member 650 to drive the first mounting rod 610 to rotate, so that the spraying member 620, the brushing member 630, and the scraping member 640 clean the dirt at the light-receiving surface 201 in a predetermined order, meeting the requirements of implementing local cleaning and overall cleaning of the light-receiving surface 201.

[0138] Refer to Figure 8 , Figure 9 and Figure 10 , in some embodiments of the present application, the photovoltaic module system further includes a dredging device 700 provided on the edge crossbeam 130. The dredging device 700 includes a dirt-removing member 710 provided in the third drainage groove 131. The dirt-removing member 710 can move along the third drainage groove 131 to dredge the third drainage groove 131 and export the dirt in the third drainage groove 131.

[0139] With such a setting, the third drainage groove 131 serves as the main sewage discharge channel of the photovoltaic module system. When the dirt-removing member 710 moves along the third drainage groove 131, it can not only dredge the third drainage groove 131 to prevent dirt from accumulating in the third drainage groove 131 and blocking it, but also accelerate the export of the dirt in the third drainage groove 131.

[0140] It should be noted that both ends of the third drainage groove 131 can be connected to corresponding sewage pipes (not shown in the figure). When the dirt-removing member 710 reciprocates along the third drainage groove 131, it can guide the dirt in the third drainage groove 131 to the sewage pipes from both ends.

[0141] Furthermore, refer to Figure 10A plurality of third nozzles 711 are circumferentially spaced apart on the outer wall of the dirt-repelling member 710 , and all the third nozzles 711 are directed toward different positions of the inner wall of the third drainage groove 131 . The third nozzles 711 are used to spray high-pressure water flow and / or high-pressure air flow to flush the inner wall of the third drainage groove 131 .

[0142] With such arrangement, on the one hand, dirt in the third drainage groove 131 is discharged through the movement of the dirt-repelling member 710, and on the other hand, stubborn dirt attached to the inner wall of the third drainage groove 131 is flushed down through the third nozzle 711 so as to be discharged through the third drainage groove 131, thereby further reducing the risk of blockage of the third drainage groove 131 and improving the drainage efficiency.

[0143] Specifically, the pollution-repelling member 710 is constructed as a rigid plate with a certain structural strength, such as a steel plate, an iron plate, etc. The pollution-repelling member 710 is vertically arranged in the third drainage groove 131, and a part of the third nozzles 711 on the outer wall of the pollution-repelling member 710 sprays high-pressure water flow, and another part of the third nozzles 711 sprays high-pressure air flow. The third nozzles 711 spraying high-pressure water flow and the third nozzles 711 spraying high-pressure air flow are alternately arranged along the outer wall of the pollution-repelling member 710.

[0144] With such arrangement, the high-pressure water flow can effectively disperse the dirt attached to the inner wall of the third drainage groove 131, and the high-pressure air flow can generate tiny bubbles in the water in the third drainage groove 131. When the bubbles burst, local high pressure is released to further peel off the stubborn dirt and stains on the inner wall of the third drainage groove 131. The combination of the two can improve the decontamination efficiency, and can accelerate the efficiency of dirt being discharged along with the water flow in the third drainage groove 131, thereby improving the drainage efficiency.

[0145] Furthermore, the dredging device 700 further includes a third driving member 720, which is used to drive the dirt-removing member 710 to move along the third drainage groove 131. The photovoltaic module system further includes a second detection device 20, which is used to sense whether the use environment of the photovoltaic module 200 is rainy weather, and the third driving member 720 is in communication connection with the second detection device 20.

[0146] Specifically, the second detection device 20 can be set on the top of the edge beam 130. The second detection device 20 can be a rain sensor, which measures the amount of rainfall in the environment to determine whether the environment is rainy weather. The second detection device 20 can also be a coordinated structure of a camera and AI image recognition, which directly analyzes and collects rain or accumulated water images, and combines deep learning to determine whether the environment is rainy weather.

[0147] It can be understood that when the second detection device 20 detects that the usage environment of the photovoltaic module 200 is rainy weather, it indicates that some dirt on the light-receiving surface 201 of the photovoltaic module 200 will flow into the third drain trough 131 under the flushing of rainwater, causing rainwater containing dirt to quickly accumulate in the third drain trough 131. At this time, the controller controls the third driving member 720 to drive the dirt-removing member 710 to move along the third drain trough 131 based on the detection information of the second detection device 20, so as to drain the sewage in the third drain trough 131 in the first time, realizing the automatic sewage discharge function and also reducing the probability of the third drain trough 131 being blocked.

[0148] Further, referring to Figure 8 、 Figure 9 and Figure 10 , the third driving member 720 includes a third sub-driving member (not shown in the figure), a third transmission rod 721 drivingly connected to the third sub-driving member, and a third limiting groove (not shown in the figure) provided on the side wall of the third drain trough 131. The third transmission rod 721 extends along the transverse direction X and can be driven by the third sub-driving member to rotate around itself. The length of the third transmission rod 721 is the same as the length of the third drain trough 131. The third sub-driving member can be a rotational driving member such as a motor or a motor. The dirt-removing member 710 is sleeved on the third transmission rod 721 and is threadedly connected to the third transmission rod 721, and the dirt-removing member 710 is also slidably connected to the third limiting groove. It is easy to understand that the third driving member 720 as a whole can be understood as a lead screw transmission structure, which converts the rotational motion of the third sub-driving member into the accurate linear motion of the dirt-removing member 710 in the transverse direction X.

[0149] Being set to the above structure enables the dirt-removing member 710 to only have the freedom of linear motion in the transverse direction X, enabling the dirt-removing member 710 to accurately move along the transverse direction X to dredge the third drain trough 131, simplifies the overall structure of the third driving member 720, and greatly reduces the space occupied by the overall dredging device 700 in the photovoltaic module system.

[0150] In some embodiments of the present application, referring again to Figure 8 、 Figure 9 and Figure 10 , the photovoltaic module system further includes a light-shielding device 800 provided on the edge cross beam 130. The light-shielding device 800 includes a plurality of light-shielding blades 810 distributed along the transverse direction X and opposite to the backlight surface 202 of the photovoltaic module 200. The light-shielding blades 810 have a flattened state parallel to the backlight surface 202 and a light-transmitting state not parallel to the backlight surface 202.

[0151] Among them, when all the shading blades 810 are in a flattened state, all the shading blades 810 form a shading surface, and the vertical projection of the backlight surface 202 of all photovoltaic modules 200 relative to the shading surface is within the shading surface; when any shading blade 810 is in a light-transmitting state, a light-transmitting gap is formed between the shading blade 810 in the light-transmitting state and the adjacent shading blade 810.

[0152] It is easy to understand that the shading blades 810 are arranged at intervals below the photovoltaic assembly 200 .

[0153] With the above arrangement, when all the shading blades 810 are in a flattened state, all the shading blades 810 form a shading surface, thereby solving the glare problem in the indoor environment below the photovoltaic module 200. In addition, according to the actual demand for the amount of light passing through the indoor environment, when one or more shading blades 810 are in a light-transmitting state, one or more light-transmitting gaps for sunlight to pass through can be formed on all the shading blades 810, thereby flexibly controlling the amount of light passing through the indoor environment and meeting diverse usage requirements.

[0154] Further, the light shielding blade 810 is configured to be able to rotate around itself to switch between the flattened state and the light transmitting state.

[0155] Specifically, see Figure 9 and Figure 12 The shading device 800 includes a plurality of fourth driving members 830, and the plurality of fourth driving members 830 correspond one-to-one to the plurality of shading blades 810. The driving ends of the fourth driving members 830 correspond to the driving connected shading blades 810 to drive the shading blades 810 to rotate around their own axes, so that the shading blades 810 can switch between a flattened state and a light-transmitting state, and can also prevent adjacent shading blades 810 from interfering with each other during movement.

[0156] Further, see Figure 8 , Figure 9 and Figure 10 The shading device 800 also includes a third mounting rod 820 extending along the horizontal direction X, and all the shading blades 810 are slidably connected to the third mounting rod 820. The shading blades 810 have a vertical state relative to the backlight surface 202. All the shading blades 810 can maintain the vertical state and move along the third mounting rod 820 to the end of the third mounting rod 820.

[0157] Specifically, a mounting groove 133 extending in the horizontal direction X is formed inside the edge beam 130, and the shading device 800 also includes a fifth driving member (not shown in the figure) arranged in the mounting groove 133, and the third mounting rod 820 is arranged in parallel in the mounting groove 133, and the driving end of the fifth driving member is connected to the third mounting rod 820 to drive the third mounting rod 820 to rotate around itself, and the fifth driving member can be a rotating driving member such as a motor. All the fourth driving members 830 are sleeved on the third mounting rod 820 and threadedly connected with the third mounting rod 820, and the fourth driving member 830 is also slidably connected with the mounting groove 133. In this way, the third mounting rod 820, the fifth driving member and the mounting groove 133 constitute a screw transmission structure, which converts the rotational motion of the fifth driving member into the accurate movement of the fourth driving member 830 in the horizontal direction X, so that the fourth driving member 830 drives the shading blade 810 thereon to maintain a vertical state and move along the third mounting rod 820 to the end of the third mounting rod 820.

[0158] It can be understood that by allowing the shading blades 810 to maintain a vertical state and move and retract along the third mounting rod 820 to the end of the third mounting rod 820, collision and interference between adjacent shading blades 810 during the movement and retraction process can be avoided. At the same time, by maintaining all the shading blades 810 in a vertical state and retracting them at the end of the third mounting rod 820, the light transmittance in the indoor environment can be maximized, thereby meeting the indoor light transmittance requirements.

[0159] Furthermore, a reflective coating (not shown in the figure) is provided on a side of the light-shielding blade 810 close to the backlight surface 202 .

[0160] By utilizing the high reflective performance of the reflective coating, the reflectivity of the shading blades 810 can be increased, the backlight surface 202 of the photovoltaic module 200 can be promoted to generate electricity, and the overall power generation efficiency of the photovoltaic module system can be improved.

[0161] The reflective coating may be, but is not limited to, a metal reflective coating, a flexible reflective film, etc., and is not specifically limited thereto. The reflective coating may be coated on a surface of one side of the shading blade 810 close to the backlight surface 202 .

[0162] In some embodiments of the present application, see Figure 2 , Figure 3 , Figure 8 , Figure 9 and Figure 10 The photovoltaic module system also includes an insulating glass 30, which is arranged on the waterproof bracket 100 and is parallel to the backlight surface 202 of all photovoltaic modules 200 and distributed at intervals. An air cavity 40 is formed between the insulating glass 30 and the backlight surface 202 of all photovoltaic modules 200, and a vacuum cavity 31 is formed inside the insulating glass 30.

[0163] The heat-insulating glass 30 can be a double-glazed insulating glass, forming a vacuum chamber 31 inside the heat-insulating glass 30. The heat-insulating glass 30 is located below the photovoltaic module 200 and also below the light-shielding blades 810. The lateral edges and longitudinal edges of the heat-insulating glass 30 can be respectively clamped on the edge cross beam 130 and the edge longitudinal beam 120.

[0164] By providing the heat-insulating glass 30, an air chamber 40 is formed between the heat-insulating glass 30 and the backlight surface 202 of all the photovoltaic modules 200. The thermal conductivity of the static air in the air chamber 40 is much lower than that of solid materials, which can effectively slow down heat conduction. Moreover, the air chamber 40 can inhibit natural convection of air and reduce heat exchange. The vacuum chamber 31 located below the air chamber 40 can greatly reduce gas molecule heat conduction and convection, so that only radiative heat transfer basically exists in the air chamber 40 and the vacuum chamber 31, and the vacuum chamber 31 effectively cuts off the heat conduction path.

[0165] In this way, the double-chamber structure of the air chamber 40 and the vacuum chamber 31 inside the heat-insulating glass 30 constitutes a double thermal resistance superposition structure, realizing high-efficiency heat insulation, reducing indoor and outdoor heat exchange of the house where the photovoltaic module 200 is located, enhancing the heat insulation and heat preservation performance of the building house, and at the same time taking into account economy and reliability.

[0166] In addition, referring to Figure 1 , the embodiment of the present application also provides a photovoltaic roof, and the photovoltaic roof includes the photovoltaic module system of any one of the above embodiments. The photovoltaic module 200 is installed on the roof 900 through the waterproof bracket 100.

[0167] The waterproof bracket 100 can be fixed on the roof 900 through expansion screws, and a fourth sealing strip 140 is provided at the connection between the waterproof bracket 100 and the roof 900 to prevent water and dirt from seeping at the connection between the waterproof bracket 100 and the roof 900, further improving the waterproof and anti-fouling performance of the photovoltaic module system.

[0168] The fourth sealing strip 140 can be but is not limited to an elastic silica gel strip, a sponge foam sealing strip, etc.

[0169] It is not difficult to understand that since the photovoltaic roof of the embodiment of the present application is configured with the above photovoltaic module system, it also has the same technical effects brought by this photovoltaic module system, that is, it has better waterproof performance and dirt cleaning performance and better power generation efficiency.

[0170] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0171] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patented application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A photovoltaic module system, characterized in that, Comprising: A waterproof bracket, including a middle longitudinal beam and edge cross beams; At least two photovoltaic modules, arranged side by side in the transverse direction on the waterproof bracket. The peripheral edges of the photovoltaic modules include longitudinal edges and transverse edges. A splicing portion is formed between the longitudinal edges of two adjacent photovoltaic modules that are close to each other. The splicing portion is connected to the corresponding middle longitudinal beam, and a first drainage groove for docking with the splicing portion is formed in the middle longitudinal beam. The transverse edges of all the photovoltaic modules are connected to the edge cross beams, and a third drainage groove for docking with the transverse edges is formed inside the edge cross beams. The first drainage groove and the third drainage groove are communicated; A cleaning device, arranged on the waterproof bracket and configured to spray and / or brush and / or scrape the light-receiving surface of the photovoltaic module.

2. The photovoltaic module system according to claim 1, wherein, The photovoltaic module system further includes a first water-blocking member. The first water-blocking member includes a covering portion and a first water-blocking portion connected to the covering portion and extending to connect to the middle longitudinal beam. The covering portion covers the splicing portion and is connected to the light-receiving surface of the photovoltaic module. The first water-blocking portion surrounds the opening of the first drainage groove.

3. The photovoltaic module system according to claim 1, wherein, The photovoltaic module system further includes a third water-blocking member. The third water-blocking member includes a second covering portion and a second diversion portion connected to the second covering portion and extending to connect to the edge cross beam. The second covering portion covers all the transverse edges of the photovoltaic modules. The second diversion portion is docked with the third drainage groove.

4. The photovoltaic module system according to claim 3, wherein The second diversion portion includes a second diversion surface inclined towards the third drainage groove and a second folded edge bent relative to the second diversion surface. The second diversion surface is transitionally connected to the second covering portion, and the second folded edge is sealingly connected to the edge cross beam.

5. The photovoltaic module system according to claim 1, characterized in that, The waterproof bracket further includes an edge longitudinal beam. The photovoltaic module system further includes a second water-blocking member. The second water-blocking member includes a first covering portion and a first diversion portion connected to the first covering portion and extending to connect to the edge longitudinal beam. The first covering portion covers the longitudinal edge of the photovoltaic module located at the farthest position in the transverse direction. A second drainage groove for docking with the first diversion portion is formed inside the edge longitudinal beam. The second drainage groove is communicated with the third drainage groove.

6. The photovoltaic module system according to claim 5, wherein, The first diversion portion includes a first diversion surface inclined towards the second drainage groove and a first folded edge bent relative to the first diversion surface. The first diversion surface is transitionally connected to the first covering portion, and the first folded edge is sealingly connected to the edge longitudinal beam.

7. The photovoltaic module system according to any one of claims 1 to 6, characterized in that, The cleaning device includes a first mounting rod, and a spraying member and a brushing member arranged at intervals along the circumferential direction on the outer wall of the first mounting rod. The first mounting rod extends along the longitudinal direction of the photovoltaic module and faces the light-receiving surface of the photovoltaic module. The first mounting rod is configured to be able to move along the transverse direction and be able to rotate around itself. The spraying member and the brushing member are respectively used for spraying and brushing the light-receiving surface.

8. The photovoltaic module system according to claim 7, characterized in that, The spraying member extends along the length direction of the first mounting rod; and / or, the brushing member extends along the length direction of the first mounting rod.

9. The photovoltaic module system according to claim 7, wherein The cleaning device further includes a scraping member, the scraping member, the spraying and washing member, and the brushing member are circumferentially spaced on the outer wall of the first mounting rod, and the scraping member is used for scraping the light-receiving surface.

10. The photovoltaic module system according to claim 7, characterized in that, The spraying and washing member is provided with a plurality of first nozzles spaced along the longitudinal direction and / or a plurality of second nozzles spaced along the longitudinal direction. The first nozzles are used for spraying a cleaning agent toward the light-receiving surface, and the second nozzles are used for pneumatically flushing the light-receiving surface.

11. The photovoltaic module system according to claim 7, wherein The cleaning device further includes a first driving member, and the first driving member is used for driving the first mounting rod to rotate around itself; The photovoltaic module system further includes a controller and a first detection device. The first detection device is used for acquiring images of the light-receiving surfaces of all the photovoltaic modules to judge the degree of dirt on the light-receiving surfaces. The first detection device, the first driving member, the spraying and washing member, and the brushing member are all communicatively connected to the controller.

12. The photovoltaic module system according to any one of claims 1 to 6, characterized in that, The photovoltaic module system further includes a dredging device provided on the edge cross beam. The dredging device includes a dirt dredging member provided in the third drain groove. The dirt dredging member can move along the third drain groove to dredge the third drain groove and export the dirt in the third drain groove.

13. The photovoltaic module system according to claim 12, wherein, A plurality of third nozzles are circumferentially spaced on the outer wall of the dirt dredging member. All the third nozzles face different positions on the inner wall of the third drain groove. The third nozzles are used for spraying high-pressure water flow and / or high-pressure air flow to wash the inner wall of the third drain groove.

14. The photovoltaic module system according to claim 13, wherein The dredging device further includes a third driving member, and the third driving member is used for driving the dirt dredging member to move along the third drain groove; The photovoltaic module system further includes a second detection device, and the second detection device is used for sensing whether the usage environment of the photovoltaic module is a rainy day. The third driving member is communicatively connected to the second detection device.

15. The photovoltaic module system according to any one of claims 1 to 6, wherein The photovoltaic module system further includes a light-shielding device provided on the edge cross beam. The light-shielding device includes a plurality of light-shielding blades distributed along the transverse direction and opposite to the backlight surface of the photovoltaic module. The light-shielding blades have a flattened state parallel to the backlight surface and a light-transmitting state not parallel to the backlight surface; Wherein, when all the light-shielding blades are in the flattened state, all the light-shielding blades form a light-shielding surface, and the vertical projection of the backlight surface of all the photovoltaic modules relative to the light-shielding surface is within the light-shielding surface; when any one of the light-shielding blades is in the light-transmitting state, a light-transmitting gap is formed between the light-shielding blade in the light-transmitting state and the adjacent light-shielding blade.

16. The photovoltaic module system according to claim 15, characterized in that, The light-shielding blades are configured to be able to rotate around themselves to switch between the flattened state and the light-transmitting state.

17. The photovoltaic module system according to claim 15, wherein, The light-shielding device further includes a third mounting rod extending along the transverse direction. All the light-shielding blades are slidably connected to the third mounting rod. The light-shielding blades have a vertical state perpendicular to the backlight surface, and all the light-shielding blades can move and converge to the end of the third mounting rod along the third mounting rod while maintaining the vertical state.

18. The photovoltaic module system according to claim 15, wherein, A reflective coating is provided on one side of the light-shielding blade close to the backlight surface.

19. The photovoltaic module system according to any one of claims 1 to 6, characterized in that The photovoltaic module system further includes heat-insulating glass. The heat-insulating glass is arranged on the waterproof bracket and is parallel and spaced from the backlight surfaces of all the photovoltaic modules. An air cavity is formed between the heat-insulating glass and the backlight surfaces of all the photovoltaic modules, and a vacuum cavity is formed inside the heat-insulating glass.

20. A photovoltaic roof, characterized in that, It includes the photovoltaic module system according to any one of claims 1 to 19. The photovoltaic modules are installed on the roof through the waterproof bracket.

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