Lightweight photovoltaic system

Abstract

The utility model relates to the technical field of photovoltaic cells, and provides a light photovoltaic system which is applied to a color steel tile roof and comprises a flexible photovoltaic module and a rigid fixing frame. The flexible photovoltaic module is fixed on the rigid fixing frame; wherein the rigid fixing frame comprises a fixing part and a ventilation net, and the fixing part is provided with a movable connecting piece and is detachably connected with the color steel tile roof; the surface of the rigid fixing frame is also provided with an adhesive layer, and the flexible photovoltaic module is bonded on the rigid fixing frame through the adhesive layer. According to the light photovoltaic system provided by the embodiment of the invention, the rigid fixing frame is arranged, so that a good stability condition can be provided for the flexible photovoltaic module, and good deformation resistance can be provided for the color steel tile. The ventilation net can provide a good heat dissipation condition for the flexible photovoltaic module, and the service life of the flexible photovoltaic module can be prolonged. The rigid fixing frame and the color steel tile roof are detachably connected, and installation and maintenance are convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic cells, in particular to a lightweight photovoltaic system. BACKGROUND

[0002] In the field of building structure engineering, color steel tile has been widely used as a roof material for factories, commercial buildings and the like due to its aesthetic appearance, durability, waterproofness and the like. With the development and application of photovoltaic power generation technology, the installation of photovoltaic modules on color steel tile roofs not only realizes green electricity production and income from idle roofs, but also makes buildings low-carbonized or even zero-carbonized, which has become an important implementation way for the national "double carbon" strategy. Lightweight flexible photovoltaic modules have the characteristics of lightweight, bendable, customizable and strong installation environment adaptability, and are particularly suitable for installation in color steel tile roof scenarios with low load-bearing capacity.

[0003] The existing lightweight flexible photovoltaic modules are mainly installed on color steel tile roofs by the pasting method, i.e., the lightweight flexible photovoltaic modules are pasted on the color steel tile roof by glue, and then compacted by a weight to make them tightly adhere to the roof. This method is simple to operate and low in cost, but has the following problems: first, the color steel tile itself has low strength and is prone to deformation, and is likely to be deformed, moved or detached under the action of wind or other external forces, and the contact area between the lightweight flexible photovoltaic module and the color steel tile roof is limited, resulting in poor stability of the flexible photovoltaic module installed on the color steel tile roof. Second, due to the limited bonding capacity of the glue, the bonding strength between the lightweight flexible photovoltaic module and the roof is insufficient, and the lightweight flexible photovoltaic module is also likely to loosen or detach during use. Third, the existing installation method also has the problem of inconvenience in replacement and disassembly. Once replacement or maintenance is required, the entire module needs to be completely removed, which is time-consuming and labor-intensive. In addition, after the installation of the lightweight flexible photovoltaic module is completed, there is almost no air flow channel between the module and the roof, so that the heat generated by the lightweight flexible photovoltaic module during power generation cannot be effectively dissipated, affecting the power generation output of the photovoltaic module and reducing its service life. CONTENT OF THE UTILITY MODEL

[0004] In order to solve at least one of the above technical problems, the present application provides a lightweight photovoltaic system which is light in weight, has strong environmental adaptability, good stability and deformation resistance, and good heat dissipation function. The lightweight photovoltaic system can work continuously for a long time, is convenient to install and easy to maintain.

[0005] Based on this, the present application provides a lightweight photovoltaic system applied to a color steel tile roof, comprising: a flexible photovoltaic module and a rigid fixing frame; the flexible photovoltaic module is fixed on the rigid fixing frame; wherein the rigid fixing frame comprises a fixing part and a ventilation net, the fixing part is provided with a movable connecting piece, and the rigid fixing frame is detachably connected with the color steel tile roof through the movable connecting piece; the surface of the rigid fixing frame is further provided with a glue layer, and the flexible photovoltaic module is adhered to the rigid fixing frame through the glue layer.

[0006] The present embodiment installs a light flexible photovoltaic module on a color steel tile with weak supporting force, and uses a rigid fixing frame to fix the flexible photovoltaic module. The fixing part of the rigid fixing frame can provide good stability to the flexible photovoltaic module and good deformation resistance to the color steel tile. In addition, the ventilation net of the rigid fixing frame can provide good heat dissipation conditions for the flexible photovoltaic module, so as to ensure long-time continuous work of the flexible photovoltaic module and prolong the service life of the flexible photovoltaic module. The rigid fixing frame and the color steel tile roof are connected in a detachable manner, which is more convenient for installation and maintenance.

[0007] In combination with the above light photovoltaic system, the flexible photovoltaic module is not in contact with the ventilation net, and the space between the flexible photovoltaic module and the ventilation net forms a first heat dissipation channel.

[0008] In the present embodiment, there is a certain gap between the flexible photovoltaic module and the ventilation net, and the space formed by the flexible photovoltaic module and the ventilation net forms a first heat dissipation channel. The airflow in the first heat dissipation channel can dissipate heat generated by the flexible photovoltaic module during power generation, thereby reducing the temperature of the flexible photovoltaic module and ensuring that the flexible photovoltaic module works in a suitable temperature environment, thereby prolonging the service life of the flexible photovoltaic module.

[0009] In combination with the above light photovoltaic system, the ventilation net and the color steel tile roof form at least one second heat dissipation channel.

[0010] In the present embodiment, the ventilation net of the rigid fixing frame and the color steel tile roof form at least one second heat dissipation channel. Part of the airflow in the first heat dissipation channel can enter the second heat dissipation channel through the ventilation net and diffuse outward with the airflow in the second heat dissipation channel. Therefore, the airflow in the second heat dissipation channel can assist the airflow in the first heat dissipation channel to dissipate heat from the flexible photovoltaic module. The airflow in the two heat dissipation channels is much larger than the airflow in one heat dissipation channel, so the heat dissipation effect on the flexible photovoltaic module is better.

[0011] In combination with the above light photovoltaic system, the adhesive layer is arranged on the fixing part.

[0012] In the present embodiment, the adhesive layer for connecting the flexible photovoltaic module and the rigid fixing frame is arranged on the fixing part, which can meet the bonding needs of the flexible photovoltaic module. Compared with the prior art, the contact area between the flexible photovoltaic module and the rigid fixing frame is large, which can effectively improve the stability of the bonding between the flexible module and the rigid fixing frame. Arranging the adhesive layer on the fixing part can make full use of the structural features of the rigid fixing frame, avoid waste, and reduce the manufacturing cost.

[0013] In combination with the above light photovoltaic system, the fixing part is arranged on the outer periphery of the ventilation net.

[0014] In the present embodiment, the fixing portion is arranged at the outer periphery of the ventilation net, which is conducive to fixing the flexible photovoltaic module and dissipating heat of the photovoltaic module. The outer periphery of the photovoltaic module can be fixed and bonded to the fixing portion, and the ventilation net is arranged below the flexible photovoltaic module and directly corresponds to most of the area of the flexible photovoltaic module, so that the heat dissipation effect of the flexible photovoltaic module can be improved.

[0015] In combination with the above lightweight photovoltaic system, the ventilation net comprises a plurality of rectangular net openings, and the plurality of rectangular net openings are of the same size.

[0016] In the present embodiment, the ventilation net openings are arranged in a rectangular shape, which can increase the speed and flow of airflow through the ventilation net, and is conducive to heat dissipation. The plurality of ventilation net openings of the same size can make the flow rate and flow distribution of the airflow more uniform, and the heat dissipation effect is better.

[0017] In combination with the above lightweight photovoltaic system, the rigid fixing frame is made of metal.

[0018] In the present embodiment, the rigid fixing frame made of metal can increase its heat conductivity, so that the heat of the flexible photovoltaic module in contact with the rigid fixing frame can be quickly conducted away, and the heat dissipation effect of the flexible photovoltaic module can be improved.

[0019] In combination with the above lightweight photovoltaic system, the rigid fixing frame is of a plate structure.

[0020] In the present embodiment, the rigid fixing frame is of a plate structure, which has low mass and does not exert excessive pressure on the color steel tile roof. In addition, the plate structure of the rigid fixing frame has a large overall area, and has a large contact surface with the color steel tile roof, i.e., the color steel tile roof supports the rigid fixing frame on a large surface, so that the installation stability of the rigid fixing frame can be significantly improved. The plate structure of the rigid fixing frame is also conducive to bonding the flexible photovoltaic module, and can improve the stability of the flexible photovoltaic module.

[0021] In combination with the above lightweight photovoltaic system, the ventilation net corresponds to the position of the flexible photovoltaic module.

[0022] In the present embodiment, the ventilation net is arranged near the flexible photovoltaic module, and the airflow entering the ventilation net can directly reach the surface of the flexible photovoltaic module, so that the heat dissipation effect of the flexible photovoltaic module can be significantly improved.

[0023] The light weight photovoltaic system provided by the application has at least the beneficial effects that the light weight photovoltaic system adopts light weight and flexible photovoltaic components to generate electricity, the light weight flexible photovoltaic components are installed on the color steel tile with weak supporting force, the structural strength of the color steel tile is enhanced, the rigid fixing frame is used to fix the flexible photovoltaic components to improve the stability of the flexible photovoltaic components. The fixing part of the rigid fixing frame can provide good stability for the flexible photovoltaic components and good deformation resistance for the color steel tile. In addition, the ventilation net of the rigid fixing frame can provide good heat dissipation conditions for the flexible photovoltaic components, which can ensure long-time continuous work and prolong the service life of the flexible photovoltaic components. The rigid fixing frame and the color steel tile roof are connected in a detachable manner, which is more convenient for installation and maintenance.

[0024] Other features and advantages of the present application will be described in detail in the following specific embodiment part. BRIEF DESCRIPTION OF DRAWINGS

[0025] The drawings used in the embodiments or the prior art description are briefly introduced as follows.

[0026] Figure 1 It is a partial structure schematic diagram of the color steel tile in the prior art;

[0027] Figure 2 It is an assembly structure section schematic diagram of the light weight photovoltaic system provided by the embodiment of the application and the color steel tile roof;

[0028] Figure 3 It is a structure schematic diagram of the rigid fixing frame provided by the embodiment of the application;

[0029] Figure 4 It is a section structure schematic diagram of the light weight photovoltaic system provided by the embodiment of the application;

[0030] Figure 5 It is a section structure schematic diagram of another light weight photovoltaic system provided by the embodiment of the application.

[0031] EXPLANATION OF REFERENCE NUMERALS

[0032] 100, flexible photovoltaic component;

[0033] 200, rigid fixing frame; 210, fixing part; 211, through hole; 220, ventilation net; 221, rectangular net opening; 230, glue layer;

[0034] 300, color steel tile roof;

[0035] 400, first heat dissipation channel;

[0036] 500, second heat dissipation channel. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

[0038] In the description of the present application, the orientations or positional relationships indicated by the terms “center”, “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer” and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0039] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms “mounting”, “connection”, “connecting” should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, can also be abutting connection or integral connection; for those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0040] In the description of the present application, specific features, structures, materials or characteristics can be combined in any one or more embodiments in a suitable manner.

[0041] Flexible photovoltaic modules, also known as lightweight modules, are a kind of photovoltaic products that can be bent by 30 degrees or even more. Their main materials include polyester, polyimide, polytetrafluoroethylene, fluorinated polymers, etc. These materials can be made into thin-film solar cells through printing, spraying and other processes, and then bonded with polyethylene, polyethylene terephthalate and other materials to form flexible solar panels. Flexible photovoltaic modules have the characteristics of lightness, portability, plasticity, high efficiency, etc., and are suitable for various installation environments and application scenarios, so they are widely used in the field of photovoltaic power generation technology, and are expected to become one of the mainstream photovoltaic products in the future.

[0042] Color steel tile, also known as color profiled tile, as shown in Figure 1 is a kind of profiled sheet made of color-coated steel sheet, which is cold-bent into various wave-shaped profiles by rolling. It is widely used in industrial and civil buildings, warehouses, special buildings, roof and wall of large-span steel structure houses, and interior and exterior wall decoration, etc. Color steel tile has many advantages, including light weight, high strength, rich color, convenient and fast construction, earthquake resistance, fire resistance, rain resistance, long service life, maintenance-free and other characteristics.

[0043] It is known that photovoltaic power generation needs to occupy land resources, but land resources are increasingly scarce, which has become a factor restricting the development of photovoltaic power generation. The installation of photovoltaic power generation system on the roof can well solve the above problems, especially the roof of industrial plant, which can provide concentrated and large-area installation conditions for photovoltaic modules. The roof of industrial plant is paved with light and durable color steel tile, but it also has some shortcomings, that is, the structural strength is not high, and the supporting force provided is low. The stability of the flexible photovoltaic module installed on the color steel tile is poor. When the flexible photovoltaic module is bonded to the color steel tile, the bonding area of the two is limited, and it is easy to fall off. After the flexible photovoltaic module is bonded to the roof, there is almost no air circulation, which causes the heat generated by the module during power generation to be unable to be effectively dissipated, affecting the power generation output and long-term operation of the photovoltaic module. In addition, the existing installation method also has the problem of inconvenience in replacement and disassembly. Once replacement or maintenance is needed, the entire module needs to be completely removed, which is time-consuming and labor-intensive.

[0044] Based on this, the light photovoltaic system applied to the color steel tile roof is provided, which is light in quality, strong in environmental adaptability, has good stability and anti-deformation ability, and also has good heat dissipation function. The light photovoltaic system provided by the application can work continuously for a long time, and is convenient to install and easy to maintain.

[0045] Figure 2 A cross-sectional structure schematic diagram of a light photovoltaic system provided by an embodiment of the application; Figure 3 A structure schematic diagram of a rigid fixing frame provided by an embodiment of the application. As shown in Figures 2-3 The light photovoltaic system includes a flexible photovoltaic module 100 and a rigid fixing frame 200. The flexible photovoltaic module 100 is fixed on the rigid fixing frame 200, and the rigid fixing frame 200 is detachably connected with the color steel tile roof 300. The rigid fixing frame 200 includes a fixing part 210 and a ventilation net 220, and the rigid fixing frame 200 is detachably connected with the color steel tile roof 300 through a movable connecting piece. The surface of the rigid fixing frame 200 is also provided with a glue layer 230, and the flexible photovoltaic module 100 is bonded to the rigid fixing frame 200 through the glue layer 230.

[0046] The rigid fixing frame 200 includes two parts, which are the fixing part 210 and the ventilation net 220. At the fixing part 210, the rigid fixing frame 200 is detachably connected with the color steel tile roof 300. The rigid fixing frame 200 is provided with a glue layer 230, and the flexible photovoltaic module 100 is bonded to the rigid fixing frame 200 through the glue layer 230, and the flexible photovoltaic module 100 is located on the ventilation net 220. The glue layer 230 is arranged on the surface of the rigid fixing frame 200 away from the color steel tile roof 300. It can be seen that the fixing part 210 is used for fixing the flexible photovoltaic module 100 and realizing the detachable connection between the rigid fixing frame 200 and the color steel tile roof 300. As shown in Figure 3As shown, the fixing portion 210 can be arranged at the outer periphery of the ventilation net 220, and a plurality of through holes 211 are formed in the fixing portion 210. Connection members (such as bolts, self-tapping screws, etc.) can be arranged at the plurality of through holes 211 to achieve detachable connection of the rigid fixing frame 200 and the color steel tile roof 300. When the bolts are used to achieve detachable connection of the rigid fixing frame 200 and the color steel tile roof 300, threads matched with the bolts can be arranged in the plurality of through holes 211, that is, the bolts are fixed by the threaded holes; or the bolts are fixed by nuts, which is not limited in the present application.

[0047] As shown in FIG. 1, the rigid fixing frame 200 can be arranged on the color steel tile roof 300. The rigid fixing frame 200 can be arranged on the color steel tile roof 300 in a manner of being fixed to the color steel tile roof 300, and the flexible photovoltaic module 100 can be arranged on the rigid fixing frame 200. Figure 2 As shown, the flexible photovoltaic module 100 can also be arranged corresponding to the ventilation net 220. The ventilation net is arranged corresponding to the vicinity of the flexible photovoltaic module, and the airflow entering the ventilation net can directly reach the surface of the flexible photovoltaic module, thereby cooling the flexible photovoltaic module and significantly improving the heat dissipation effect of the flexible photovoltaic module.

[0048] The positions of the through holes 211 arranged on the fixing portion 210 can be matched and arranged according to the actual positions connected to the color steel tile, and the holes can be formed during installation and construction to achieve effective connection of the rigid fixing frame 200 and the color steel tile roof 300.

[0049] The rigid fixing frame 200 can be made of a material with high structural strength, which can strengthen the color steel tile roof 300 after being connected to the color steel tile roof 300, thereby enhancing the structural strength of the color steel tile. In addition, the contact area between the plate-shaped rigid fixing frame 200 and the flexible photovoltaic module 100 through the adhesive layer 230 is large, which can make the flexible photovoltaic module 100 more firmly bonded and less likely to be affected by external forces and fall off.

[0050] In an embodiment, the rigid fixing frame 200 is a metal structure with a certain shape memory. The metal structure can be made of high-thermal-conductivity materials such as aluminum, copper, and stainless steel. The shape memory characteristic of the metal structure enables it to restore to its original shape after being subjected to external force, thereby ensuring the stability of the lightweight photovoltaic system.

[0051] The adhesive layer 230 fixed on the surface of the rigid fixing frame 200 can be arranged as a single-layer or multi-layer structure. In an example in which the adhesive layer 230 is a single-layer structure, the adhesive layer 230 can be formed of glue with bonding ability. Therefore, in this example, the flexible photovoltaic module 100 can be directly bonded to the rigid fixing frame 200 by the glue.

[0052] In the example that the adhesive layer 230 is a multi-layer structure, the adhesive layer 230 includes a plurality of layer structures, which include but are not limited to a glue layer, a buffer layer, a felt layer, and a clamping layer, and any two or more of the above layer structures can be combined to form the adhesive layer 230. In addition, the position sequence of the plurality of layers of the adhesive layer 230 formed by combination can also be replaced with each other to meet the connection requirements of the flexible photovoltaic module 100 and the rigid fixing frame 200. Specifically, the glue layer can be composed of glue material with bonding ability, the buffer layer can be composed of foaming material, the felt layer can be composed of magic tape, and the clamping layer can be composed of clamping groove.

[0053] In other embodiments, the plurality of layer structures of the adhesive layer 230 can also include some layers with other functions to enable the adhesive layer 230 to meet the requirements of a certain installation form. The adhesive layer 230 only needs to meet the fixed connection function between the flexible photovoltaic module 100 and the rigid fixing frame 200, and the application does not make specific limitations.

[0054] In an embodiment, the rigid fixing frame 200 has a certain thickness. The flexible photovoltaic module 100 can be bonded to the rigid fixing frame 200 with a certain thickness by using glue such as silicone glue with high weather resistance and high bonding strength. The adhesive layer 230 composed of the glue can firmly bond the flexible photovoltaic module 100 and the rigid fixing frame 200, ensure the stability and reliability of the flexible photovoltaic module 100 during long-term operation and power generation, avoid the phenomenon of falling off after the adhesive layer 230 is aged or corroded, and prolong the service life of the photovoltaic module.

[0055] The rigid fixing frame 200 and the color steel tile roof 300 are detachably connected. In an example, the rigid fixing frame 200 and the color steel tile can be fixed by bolts. The bolts made of stainless steel can have good corrosion resistance and high mechanical strength, which can ensure the reliability and stability of the connection between the rigid fixing frame 200 and the color steel tile.

[0056] Through the above lightweight photovoltaic system, the stability of the flexible photovoltaic module 100 on the color steel tile can be significantly improved, the deformation risk of the color steel tile can be effectively reduced, and the structural stability thereof can be improved. Meanwhile, the rigid fixing frame 200 also provides the ventilation net 220 to dissipate heat for the flexible photovoltaic module 100, so that the flexible photovoltaic module 100 can be in a suitable temperature environment during power generation, and the service life thereof can be prolonged.

[0057] In an embodiment, the fixing portion 210 and the ventilation net 220 of the rigid fixing frame 200 can be integrally formed, which is simple and easy to manufacture and can also ensure the overall stability of the fixing portion 210 and the ventilation net 220.

[0058] Compared with the prior art, the embodiment of the present application installs the light flexible photovoltaic module 100 on the color steel tile with weak supporting force, enhances the structural strength of the color steel tile through the rigid fixing frame 200, and improves the installation stability of the flexible photovoltaic module 100. The fixed part 210 of the rigid fixing frame 200 can provide good stability for the flexible photovoltaic module 100 and good deformation resistance for the color steel tile. In addition, the ventilation net 220 of the rigid fixing frame 200 can provide good heat dissipation conditions for the flexible photovoltaic module 100, can ensure long-time continuous work, and can prolong the service life of the flexible photovoltaic module 100. The rigid fixing frame 200 and the color steel tile roof 300 are connected in a detachable manner, which is more convenient for installation and maintenance.

[0059] Figure 4 A cross-sectional structure schematic diagram of a light photovoltaic system is provided for the embodiment of the present application. As shown in Figure 4 The flexible photovoltaic module 100 and the ventilation net 220 are arranged in a non-contact form, and the space between the flexible photovoltaic module 100 and the ventilation net 220 forms a first heat dissipation channel 400.

[0060] Specifically, the surface of the ventilation net 220 of the rigid fixing frame 200 and the surface of the fixed part 210 have a height difference, that is, the surface of the ventilation net 220 is lower than the surface of the fixed part 210, and a groove is formed at the position of the ventilation net 220, which penetrates the fixed part 210 and constitutes the first heat dissipation channel 400 with the flexible photovoltaic module 100. The airflow can flow through the first heat dissipation channel 400, and take away the heat generated by the flexible photovoltaic module 100 during power generation, and play a heat dissipation role for the flexible photovoltaic module 100. In the embodiment, the flexible photovoltaic module 100 and the surface of the ventilation net 220 have a certain gap, so that the space formed by the flexible photovoltaic module 100 and the ventilation net 220 forms the first heat dissipation channel 400. The airflow in the first heat dissipation channel 400 can dissipate heat for the flexible photovoltaic module 100, effectively diffuse the heat generated during the power generation of the flexible photovoltaic module 100, reduce the temperature of the flexible photovoltaic module 100, ensure that the flexible photovoltaic module 100 works in a suitable temperature environment, and prolong the service life.

[0061] Referring to Figure 2, one side of the ventilation net 220 forms a first heat dissipation channel 400 with the flexible photovoltaic module 100, and the other side forms at least one second heat dissipation channel 500 with the color steel tile roof 300. Specifically, the color steel tile is cold-bent into various wave-shaped profiled sheets by rolling, and the wave-shaped color steel tile and the rigid fixing frame 200 form multiple channels. At the ventilation net 220 of the rigid fixing frame 200, at least one second heat dissipation channel 500 is formed between the ventilation net 220 and the color steel tile. Part of the airflow in the first heat dissipation channel 400 can enter the second heat dissipation channel 500 through the ventilation net 220 and diffuse outward with the airflow in the second heat dissipation channel 500. Therefore, the airflow in the second heat dissipation channel 500 can assist the airflow in the first heat dissipation channel 400 in dissipating heat from the flexible photovoltaic module 100. The airflow in the two heat dissipation channels is much larger than the airflow in one heat dissipation channel. Therefore, the first heat dissipation channel 400 combined with the second heat dissipation channel 500 has a better heat dissipation effect on the flexible photovoltaic module 100.

[0062] Since the rigid fixing frame 200 is connected to the flexible photovoltaic module 100 through the fixing portion 210, and the fixing portion 210 has a height difference with the surface of the ventilation net 220. Therefore, the adhesive layer 230 can be arranged on the fixing portion 210. The adhesive layer 230 connects the rigid fixing frame 200 and the flexible photovoltaic module 100, and makes the connection between the flexible photovoltaic module 100 and the rigid fixing frame 200 stable. The adhesive layer 230 is made of high-weather-resistant and high-adhesion-strength silicone or other materials, which has good anti-aging and corrosion-resistant performance, and can meet the requirements of long-term stable operation of the lightweight photovoltaic system.

[0063] In the embodiment, the adhesive layer 230 for connecting the flexible photovoltaic module 100 and the rigid fixing frame 200 is arranged on the fixing portion 210, which can meet the bonding needs of the flexible photovoltaic module 100. Compared with the prior art, the contact area between the flexible photovoltaic module 100 and the rigid fixing frame 200 through the adhesive layer 230 is large, which can effectively improve the stability of the bonding between the flexible photovoltaic module 100 and the rigid fixing frame 200. Arranging the adhesive layer 230 on the fixing portion 210 can make full use of the structural features of the rigid fixing frame 200, avoid waste, and reduce the manufacturing cost.

[0064] In other embodiments, the second heat dissipation channel 500 can also be used alone to dissipate heat from the flexible photovoltaic module 100. Figure 5 Another cross-sectional structure schematic diagram of a lightweight photovoltaic system provided by the embodiment of the present application is provided. As shown in FIG. 6, the lightweight photovoltaic system comprises a color steel tile roof 300, a flexible photovoltaic module 100, a rigid fixing frame 200, and an adhesive layer 230. Figure 5As shown, the surface of the fixing portion 210 and the ventilation net 220 on the rigid fixing frame 200 are in the same plane, that is, the surface of the fixing portion 210 and the ventilation net 220 has no height difference, and the flexible photovoltaic module 100 can be completely adhered to the rigid fixing frame 200. The rigid fixing frame 200 is a plate structure, and after being fixed with the color steel tile roof 300, one side of the rigid fixing frame 200 and the color steel tile roof 300 form a plurality of second heat dissipation channels 500, and the other side is provided with a glue layer 230 and is adhered to the flexible photovoltaic module 100 through the glue layer 230. In this embodiment, the glue layer 230 can completely cover the surface of the rigid fixing frame 200, that is, the glue layer 230 covers the surface of the fixing portion 210 and the ventilation net 220 and is firmly adhered to the flexible photovoltaic module 100. The flexible photovoltaic module 100 in this embodiment has a larger adhesion area with the rigid fixing frame 200 through the glue layer 230, and the adhesion effect is more firm.

[0065] As shown in Figure 3 , the fixing portion 210 is arranged at the outer periphery of the ventilation net 220 and serves to fix and support the ventilation net 220. The fixing portion 210 surrounds the ventilation net 220 and can protect the ventilation net 220 to some extent and is conducive to fixing the flexible photovoltaic module 100. In an embodiment, the outer periphery of the flexible photovoltaic module 100 matches the shape of the fixing portion 210, and the outer periphery of the flexible photovoltaic module 100 is tightly adhered to the fixing portion 210 through the glue layer 230, thereby significantly enhancing the stability of the flexible photovoltaic module 100. In a more preferred embodiment, the shape and size of the flexible photovoltaic module 100 are consistent with the shape and size of the rigid fixing frame 200, and the overall structure is compact and convenient for construction.

[0066] In this embodiment, arranging the fixing portion 210 at the outer periphery of the ventilation net 220 is conducive to fixing the flexible photovoltaic module 100 and dissipating heat from the photovoltaic module. The outer periphery of the photovoltaic module can be fixed and adhered to the fixing portion 210, and the ventilation net 220 is located below the flexible photovoltaic module 100 and directly corresponds to most of the area of the flexible photovoltaic module 100, thereby improving the heat dissipation effect of the flexible photovoltaic module 100.

[0067] As shown in Figure 3 , the ventilation net 220 includes a plurality of rectangular net openings 221, and the plurality of rectangular net openings 221 have the same size. In this embodiment, arranging the ventilation net 220 as a rectangle can increase the speed and flow of airflow through the ventilation net 220, thereby facilitating heat dissipation. The plurality of ventilation net openings 221 with the same size can make the flow rate and flow of airflow more evenly distributed, thereby achieving better heat dissipation effect.

[0068] In other embodiments, the ventilation net 220 may also be provided with multiple mesh openings of other shapes for ventilation and heat dissipation to meet the heat dissipation requirements of the flexible photovoltaic module 100. Similarly, the multiple mesh openings may be arranged in a regular pattern to ensure uniform airflow distribution through the multiple mesh openings.

[0069] In one embodiment, the rigid fixing frame 200 is made of metal. The use of metal for the rigid fixing frame 200 can increase its thermal conductivity, and can quickly conduct heat away from the flexible photovoltaic module 100 in contact with it, thereby improving the heat dissipation effect of the flexible photovoltaic module 100.

[0070] like Figure 3 As shown, the rigid fixing frame 200 has a plate-like structure. The plate-like rigid fixing frame 200 is low in mass and exerts relatively little pressure on the color-coated steel tile roof 300. The pressure exerted by the rigid fixing frame 200 on the color-coated steel tile roof 300 per unit area is low, thus preventing deformation of the color-coated steel tiles. Furthermore, the plate-like rigid fixing frame 200 has a large overall area and a large contact surface with the color-coated steel tile roof 300. This means that the color-coated steel tile roof 300 provides a large support surface for the rigid fixing frame 200, significantly improving the installation stability of the rigid fixing frame 200. The plate-like rigid fixing frame 200 also facilitates bonding of the flexible photovoltaic module 100 and improves the stability of the flexible photovoltaic module 100.

[0071] The lightweight photovoltaic system provided in the embodiments of the present application is made of high-strength, corrosion-resistant materials, offering excellent stability and durability. The structural design takes into account the characteristics of the lightweight flexible photovoltaic module 100 and the structural features of the color-coated steel tile roof 300, effectively improving the stability of the flexible photovoltaic module 100 when installed on the color-coated steel tile roof 300. Special adhesive materials and methods are used between the flexible photovoltaic module 100 and the color-coated steel tile roof 300 to increase the bonding area and bonding strength between the two. The adhesive material has excellent bonding properties and weather resistance, maintaining a stable bond under various climatic conditions, thereby resolving the technical issues of insufficient bonding area and weak bonding strength between the flexible photovoltaic module 100 and the color-coated steel tile roof 300. The lightweight photovoltaic system provided in the embodiments of the present application is easy to install and maintain, and is simple to operate. The flexible photovoltaic module 100 can be quickly and easily removed and replaced, resolving the technical issue of inconvenient replacement and removal of the flexible photovoltaic module 100 in the prior art. The lightweight photovoltaic system provided in the embodiments of the present application is equipped with a ventilation net 220, a first heat dissipation channel 400, and a second heat dissipation channel 500. The heat dissipation effect is significant. The metal ventilation mesh 220 with strong thermal conductivity is used in combination with the first heat dissipation channel 400 / the second heat dissipation channel 500 to improve the heat dissipation effect, thereby solving the technical problem of poor heat dissipation effect of the flexible photovoltaic module 100.

[0072] In addition, the embodiment of the present application also provides a lightweight photovoltaic roof, which comprises a color steel tile roof and at least one lightweight photovoltaic system as described above, and the at least one lightweight photovoltaic system is arranged on the color steel tile roof.

[0073] Specifically, the structure and the connection mode of the lightweight photovoltaic system to the color steel tile roof are described above, and the embodiment will not be described again.

[0074] In the embodiment, at least one lightweight photovoltaic system is arranged on the color steel tile roof for photovoltaic power generation. On the color steel tile roof, a plurality of lightweight photovoltaic systems can be arranged continuously and side by side, completely covering the color steel tile roof, and the plurality of lightweight photovoltaic systems are all detachably connected with the color steel tile.

[0075] In the embodiment, the lightweight photovoltaic device is detachably connected with the color steel tile roof through the movable connecting piece (such as a bolt), and the overall installation process is simple and convenient for maintenance. During the maintenance process, only the failed or damaged lightweight photovoltaic system needs to be disassembled, which greatly reduces the maintenance cost and time, so that the maintenance can be carried out without stopping the machine, and the power generation efficiency of the lightweight photovoltaic device is improved.

[0076] On the lightweight photovoltaic device, the flexible photovoltaic assembly is fixedly connected with the rigid fixing frame through the adhesive layer with good adhesion and weather resistance, and is fixed on the color steel tile roof through the rigid fixing frame. Compared with the prior art, the embodiment increases the pasting area and adhesion of the flexible photovoltaic assembly to the color steel tile roof, and sets the rigid fixing frame to improve the structural strength of the color steel tile roof and the stability of the flexible photovoltaic assembly, so that the installation effect can be maintained stably under various climate conditions.

[0077] The lightweight photovoltaic device also has a plurality of ventilation nets / first heat dissipation channels / second heat dissipation channels between the color steel tile roofs. The ventilation net in combination with the first heat dissipation channel / second heat dissipation channel can significantly improve the heat dissipation effect of the flexible photovoltaic assembly, so as to ensure that the lightweight photovoltaic device can continuously generate power and improve the efficiency of photovoltaic power generation.

[0078] The embodiment of the present application installs at least one lightweight flexible photovoltaic assembly on the color steel tile with weak supporting force, and uses the rigid fixing frame to fix the flexible photovoltaic assembly. The rigid fixing frame can make the flexible photovoltaic assembly have good stability, and make the color steel tile have good deformation resistance. In addition, the lightweight photovoltaic device also has good heat dissipation conditions, which can ensure that the lightweight photovoltaic device can work continuously for a long time, prolong the service life of the flexible photovoltaic assembly, and facilitate installation and maintenance.

[0079] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application, and are not limiting; although the present application has been described in detail with reference to the foregoing examples, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A lightweight photovoltaic system applied to a color steel tile roof, characterized in that, The utility model relates to a flexible photovoltaic module and rigid fixing frame, and the flexible photovoltaic module is fixed on the rigid fixing frame. The utility model relates to a flexible photovoltaic module and rigid fixing frame, and the flexible photovoltaic module is fixed on the rigid fixing frame. The rigid fixing frame comprises a fixing part and a ventilation net, and is detachably connected with the color steel tile roof through a movable connecting piece. The surface of the rigid fixing frame is further provided with a glue layer, and the flexible photovoltaic module is bonded on the rigid fixing frame through the glue layer. The space between the flexible photovoltaic module and the ventilation net forms a first heat dissipation channel.

2. The lightweight photovoltaic system of claim 1, wherein, The ventilation net and the color steel tile roof form at least one second heat dissipation channel.

3. A lightweight photovoltaic system according to claim 1 or 2, characterized in that The glue layer is arranged on the fixing part.

4. The lightweight photovoltaic system of claim 1, wherein, The fixing part is arranged on the outer periphery of the ventilation net.

5. The lightweight photovoltaic system of claim 1, wherein, The ventilation net comprises a plurality of rectangular net ports, and the plurality of rectangular net ports are of the same size.

6. The lightweight photovoltaic system of claim 1, wherein, The rigid fixing frame is made of metal.

7. The lightweight photovoltaic system of claim 1, wherein, The rigid fixing frame is of a plate structure.

8. The lightweight photovoltaic system of claim 1, wherein, The ventilation net corresponds to the position of the flexible photovoltaic module.

9. The lightweight photovoltaic system of claim 1, wherein, ​

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