Solar curtain and household photovoltaic system

Abstract

The utility model discloses a solar curtain and a household photovoltaic system, and belongs to the technical field of photovoltaics. The solar curtain comprises a plurality of shutters, an operation rope, a wiring box and a cable. The shutters are distributed in the first direction, and photovoltaic laminated pieces are arranged on the shutters. The plurality of shutters are connected with the operation rope; the wiring box extends along a first direction, the wiring box and the plurality of shutters are arranged side by side along a second direction crossed with the plurality of first directions, and at least part of a leading-out wire of the photovoltaic laminated piece is arranged in the wiring box; the wiring box is provided with a cable and is electrically connected with the outgoing line. The solar curtain has the double functions of shading and power generation and is low in cost, under the condition that sunlight is sufficient, the photovoltaic laminated pieces on the louvers of the solar curtain can generate electric energy, provide electric power support for a building and reduce energy consumption of the building, and meanwhile by adjusting the angles of the louvers, indoor light and temperature can be controlled, and the living comfort can be improved.

Description

Technical Field

[0001] This application belongs to the field of photovoltaic technology, and particularly relates to a solar curtain and a household photovoltaic system. Background Art

[0002] Solar curtains are widely used in transparent structures such as glass curtain walls, and have the functions of blocking light and heat insulation, helping to maintain a relatively constant indoor temperature, but they cannot completely insulate heat. Therefore, in hot summers, the indoor temperature may still be relatively high, which increases the energy consumption of buildings. In recent years, in order to more effectively reduce building energy consumption, an innovative design of solar curtains has emerged. A photovoltaic laminate is added to the solar curtain, which can absorb solar energy and convert it into electrical energy to provide power support for buildings, thereby reducing building energy consumption. Utility Model Content

[0003] This application aims to at least solve the technical problem of the structural improvement of solar curtains in related technologies. For this purpose, this application provides a solar curtain and a household photovoltaic system, which can generate electrical energy to provide power support for families or buildings, and at the same time control the indoor light and temperature to improve the living comfort.

[0004] In a first aspect, this application provides a solar curtain, comprising:

[0005] A plurality of louvers, the plurality of louvers are distributed along a first direction, and photovoltaic laminates are provided on the louvers;

[0006] An operating rope, the plurality of louvers are all connected to the operating rope;

[0007] A wiring box, the wiring box extends along the first direction and is arranged side by side with the plurality of louvers in a second direction intersecting the majority of the first direction, and at least part of the lead-out wires of the photovoltaic laminates are arranged in the wiring box;

[0008] A cable, the wiring box is provided with a cable and is electrically connected to the lead-out wires.

[0009] The solar curtain has the dual functions of shading and power generation, and has a low cost. In sunny conditions, the photovoltaic laminates on the louvers of the solar curtain can generate electrical energy to provide power support for buildings, reduce building energy consumption, and at the same time, by adjusting the angle of the louvers, the indoor light and temperature can be controlled to improve the living comfort.

[0010] According to an embodiment of this application, the louvers are provided with wire passing holes, the operating rope passes through the wire passing holes, and photovoltaic laminates are provided on both sides of the wire passing holes.

[0011] The solar curtain not only has the function of shading, but also can convert solar energy into electrical energy through the photovoltaic laminate to provide power support for a home or building. At the same time, since the photovoltaic laminate is installed on both sides of the louver, even if the angle of the louver changes, the photovoltaic laminate can still stably receive solar energy and maintain its power generation efficiency.

[0012] According to an embodiment of the present application, the louver is provided with a plurality of wire threading holes distributed in the second direction.

[0013] Through the arrangement of the plurality of wire threading holes, the solar curtain can increase the flexibility and diversity of controlling the angle of the louver. By adjusting the angle of the louver, personalized shading and lighting requirements can be achieved.

[0014] According to an embodiment of the present application, the number of photovoltaic laminates between two adjacent wire threading holes is equal to twice the number of photovoltaic laminates outside the wire threading hole at the end.

[0015] By ensuring that the number of photovoltaic laminates between two adjacent wire threading holes is twice that outside the wire threading hole at the end, solar energy can be maximally utilized and the power generation efficiency can be improved.

[0016] According to an embodiment of the present application, the main grid lines of the photovoltaic laminate extend in the second direction, and the lead-out wires of the photovoltaic laminate are led out from the edge of the photovoltaic laminate in the second direction.

[0017] The main grid lines of the photovoltaic laminate extend in the second direction, while the lead-out wires are led out from the edge of the photovoltaic laminate in the second direction, which can optimize current transmission and improve power generation efficiency, while ensuring that more solar energy is effectively utilized.

[0018] According to an embodiment of the present application, a plurality of photovoltaic laminates are provided on the louver, and the plurality of photovoltaic laminates on the same louver are connected in series, and the lead-out wires are led out through the photovoltaic laminate at at least one end.

[0019] By providing a plurality of series-connected photovoltaic laminates on the louver and leading out the lead-out wires through the photovoltaic laminate at at least one end, efficient energy collection and transmission can be achieved, and wiring and maintenance work can also be simplified.

[0020] According to an embodiment of the present application, wiring boxes are arranged on both sides of the plurality of louvers, the lead-out wires are led out from both sides of the plurality of photovoltaic laminates, and are respectively arranged in the wiring boxes on both sides.

[0021] By arranging the wiring boxes on both sides of multiple louvers and respectively arranging the lead-out wires of multiple photovoltaic laminates in the wiring boxes on both sides, the space can be fully utilized, and the loss of electric energy during transmission can be minimized, improving the energy conversion efficiency of the entire system.

[0022] According to an embodiment of the present application, at least one end of the wiring box has an opening, and the cable penetrates through the opening.

[0023] The opening allows the cable to directly penetrate the wiring box without complex wire winding or perforation operations, thereby simplifying the wiring process and reducing the maintenance difficulty.

[0024] According to an embodiment of the present application, the photovoltaic laminate includes a transparent front plate, a power generation cell, a connection strip, and a back plate that are stacked. A glue film is provided between the transparent front plate and the power generation cell, and between the connection strip and the back plate.

[0025] Through the stacked arrangement of these components and the bonding effect of the glue film, the photovoltaic laminate forms an efficient, stable, and durable structure that can work for a long time under harsh environmental conditions and convert solar energy into electric energy.

[0026] According to an embodiment of the present application, the transparent front plate is a polymer with a light transmittance ≥ 93% and a water permeability ≤ 0.1 g / cm.day;

[0027] and / or,

[0028] The back plate is a polymer, including a UV shielding layer, a water vapor barrier layer, a skeleton support layer, and a fluorine-containing protective layer that are sequentially stacked from the direction close to the power generation cell to the direction away from the power generation cell.

[0029] and / or,

[0030] The glue film is an EVA glue film, a POE glue film, or an EPE glue film.

[0031] By designing the back plate as a structure formed by sequentially stacking a UV shielding layer, a water vapor barrier layer, a skeleton support layer, and a fluorine-containing protective layer, it demonstrates high functionality and durability. The overall structure is simple, the functional areas are clear, and the overall miniaturization and lightweight design of the photovoltaic laminate are achieved.

[0032] According to an embodiment of the present application, the transparent front plate is a halogen-free alicyclic epoxy resin.

[0033] Through the design of the above-mentioned halogen-free alicyclic epoxy resin, the transparent front plate has better dielectric properties, thereby reducing the risk of PID (Potential Induced Degradation), improving the reliability and stability of the photovoltaic laminate, reducing the corrosivity to the battery paste, thus prolonging the service life of the light-emitting solar cell while helping to reduce the environmental impact of the photovoltaic laminate during production, use and disposal, and the transparent front plate can still maintain stable performance in a high-temperature environment, which helps the long-term stable operation of the photovoltaic laminate under high-temperature conditions.

[0034] According to an embodiment of the present application, the photovoltaic laminate further includes: a soldering aid structure, which is disposed between the back electrode of the power generation solar cell and the connection strip;

[0035] An insulating adhesive may be provided on the back surface of the power generation solar cell, and the insulating adhesive covers the peripheral area of the main grid line of the back electrode of the power generation solar cell.

[0036] Through the above setting of the insulating adhesive, the insulating adhesive covers the peripheral area of the main grid line of the back electrode of the power generation solar cell, effectively preventing the direct contact between the back electrode and the external environment, avoiding performance degradation or failure caused by corrosion, oxidation, etc., and at the same time, the presence of the insulating adhesive reduces potential safety hazards such as fires caused by electrical short circuits, ensuring safety during use. And the good insulating performance of the insulating adhesive reduces the energy loss caused by leakage, which helps to improve the overall conversion efficiency of the photovoltaic laminate.

[0037] In a second aspect, the present application provides a household photovoltaic system, including:

[0038] A solar curtain as described in any one of the above;

[0039] A household power supply, and the household power supply is electrically connected to the cable of the solar curtain.

[0040] The household photovoltaic system collects solar energy through the solar curtain and converts it into electrical energy, which can achieve energy self-sufficiency and reduce dependence on the external power grid. As a part of the building, the solar curtain can not only play a role in shading and heat insulation, but also make full use of the building surface area to collect solar energy and convert it into electrical energy, improving the energy utilization efficiency.

[0041] The additional aspects and advantages of the present application will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present application. Description of the Drawings

[0042] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description of embodiments in conjunction with the accompanying drawings, in which:

[0043] Figure 1 is a schematic structural diagram of a solar curtain provided by an embodiment of the present application;

[0044] Figure 2 is a schematic structural diagram of a photovoltaic laminate of the solar curtain provided by an embodiment of the present application.

[0045] Reference numerals:

[0046] Solar curtain 1;

[0047] Louver 10, photovoltaic laminate 110, transparent front plate 111, power generation battery sheet 112, connecting band 113, back plate 114, adhesive film 115, threading hole 120;

[0048] Wiring box 20;

[0049] First direction X, second direction Y. Detailed implementation manners

[0050] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary only for explaining the present application and should not be construed as limiting the present application.

[0051] The present application aims to at least solve the technical problem of improving the structure of solar curtains in the related art. To this end, the present application proposes a solar curtain and a household photovoltaic system, which can generate electric energy, provide power support for a family or a building, and at the same time control the light and temperature in the room, improving the living comfort.

[0052] Reference is made below to Figure 1 - Figure 2 describe the solar curtain 1 according to an embodiment of the present application.

[0053] As Figure 1 shown, the solar curtain 1 includes: a plurality of louvers 10, operating ropes, a wiring box 20, and cables.

[0054] In the technical solution of the present application, a plurality of louvers 10 are distributed along the first direction X, and a photovoltaic laminate 110 is provided on the louvers 10. The photovoltaic laminate 110 is a device capable of converting solar energy into electric energy. Providing the photovoltaic laminate 110 on the louvers 10 can not only shade or decorate, but also generate electric energy. Moreover, the operating ropes are connected to the plurality of louvers 10 and are used to control the opening and closing of the louvers 10. By pulling the operating ropes, the angle of the louvers 10 can be adjusted, thereby controlling the amount of light entering the room.

[0055] The wiring box 20 extends along the first direction X, which can ensure that the lead-out wires can be neatly arranged in the wiring box 20. The wiring box 20 is arranged side by side with a plurality of louvers 10 along the second direction Y intersecting the majority of the first direction X, that is, the wiring box 20 is placed in a direction perpendicular to the arrangement direction of the louvers 10, which can save space and ensure that the wiring box 20 does not interfere with the opening and closing of the louvers 10. At least part of the lead-out wires of the photovoltaic laminate 110 are arranged in the wiring box 20. The electric energy generated by the photovoltaic laminate 110 is transmitted to the wiring box 20 through the lead-out wires, and then connected to other devices or the power grid through cables. The cables are arranged in the wiring box 20 and are used to transmit the electric energy generated by the photovoltaic laminate 110 from the wiring box 20 to external devices or the power grid. The electrical connection between the cables and the lead-out wires can ensure the smooth transmission of electric energy.

[0056] In the related art, a photovoltaic laminate 110 is also installed on the louver 10 of the solar curtain 1, which can absorb solar energy and convert it into electric energy to provide power support for buildings, thereby reducing building energy consumption. However, conventional back-contact components are generally used, which have large stress and are easy to bend, resulting in large-area cracks in the battery chips and a relatively high risk of reliability. Moreover, the product cannot be mass-produced. This application uses conductive adhesive and solder tape for vertical interconnection, with a higher power generation efficiency than conventional components. At the same time, a new vertical interconnection technology is adopted to solve the pain point of interconnection stress of back-contact components, and it can be used for flexible components, with a higher bending tolerance than traditional back-contact components.

[0057] According to the solar curtain 1 provided by the embodiment of the present application, the solar curtain 1 has the dual functions of shading and power generation, and has a low cost. In sunny conditions, the photovoltaic laminate 110 on the louver 10 of the solar curtain 1 can generate electric energy to provide power support for buildings and reduce building energy consumption. At the same time, by adjusting the angle of the louver 10, the indoor light and temperature can also be controlled, improving the living comfort.

[0058] In some embodiments, as Figure 1 shown, the louver 10 is provided with a wire-passing hole 120, and the operating rope passes through the wire-passing hole 120, and photovoltaic laminates 110 are arranged on both sides of the wire-passing hole 120.

[0059] In the technical solution of the present application, the louvers 10 are distributed along the first direction X to form the main structure of the solar curtain 1. Each louver 10 is designed with a wire-passing hole 120 for passing through the operating rope so as to adjust the angle of the louver 10 by pulling the operating rope. On both sides of the wire-passing hole 120, photovoltaic laminates 110 are installed on the louvers 10. Even during the movement of the louvers 10, the photovoltaic laminates 110 can stably receive solar energy and convert it into electric energy.

[0060] The operating rope passes through the threading holes 120 of each louver 10 to form a continuous rope. By pulling the rope, the angles of all the louvers 10 can be uniformly controlled, thereby controlling the amount of light entering the room and meeting the requirements of sunshading or daylighting. The photovoltaic laminate 110 is installed on both sides of the louver 10 to ensure that no matter what angle the louver 10 is in, the photovoltaic laminate 110 can effectively receive solar energy and convert the solar energy into electric energy to provide power support for the household or building.

[0061] The wiring box 20 extends in the same direction as the louver 10, providing an orderly layout space for the lead wires of the photovoltaic laminate 110. There are cables in the wiring box 20, which are electrically connected to the lead wires of the photovoltaic laminate 110 to ensure that the electric energy can be smoothly transmitted from the photovoltaic laminate 110 to the wiring box 20.

[0062] It can be understood that the solar curtain 1 not only has the function of sunshading, but also can convert solar energy into electric energy through the photovoltaic laminate 110 to provide power support for the household or building. At the same time, since the photovoltaic laminate 110 is installed on both sides of the louver 10, even if the angle of the louver 10 changes, the photovoltaic laminate 110 can still stably receive solar energy and maintain its power generation efficiency.

[0063] In some embodiments, as Figure 1 shown, the louver 10 is provided with a plurality of threading holes 120 distributed along the second direction Y.

[0064] In the technical solution of the present application, the louvers 10 are distributed along the first direction X, and each louver 10 is designed with a plurality of threading holes 120. The threading holes 120 are distributed along the second direction Y different from the arrangement direction of the louver 10 body, that is, the first direction X. The operating rope passes through different threading holes 120 to achieve different operating methods and functions, so as to realize the diversified control of the angle of the louver 10.

[0065] The photovoltaic laminate 110 is installed on both sides of the louver 10 to ensure that no matter what angle the louver 10 is in, the photovoltaic laminate 110 can effectively receive solar energy and convert it into electric energy. The lead wires of the photovoltaic laminate 110 are connected to the cables in the wiring box 20 to realize the transmission of electric energy.

[0066] It can be understood that the solar curtain 1 not only has the functions of sunshading and power generation, but also through the setting of a plurality of threading holes 120, the flexibility and diversity of the angle control of the louver 10 can be increased. By adjusting the angle of the louver 10, personalized sunshading and daylighting requirements can be realized.

[0067] In some embodiments, as Figure 1As shown, the number of photovoltaic laminates 110 between two adjacent wire threading holes 120 is equal to twice the number of photovoltaic laminates 110 outside the wire threading holes 120 at the ends.

[0068] In the technical solution of this application, the number of photovoltaic laminates 110 between two adjacent wire threading holes 120 is twice the number of photovoltaic laminates 110 outside the wire threading holes 120 at the ends, which can ensure the uniform distribution and maximum utilization of the photovoltaic laminates 110 on the louver 10. Moreover, the photovoltaic laminates 110 are uniformly distributed on the entire surface of the louver 10, enabling each laminate to obtain similar sunshine duration and light intensity. Whether it is the middle part or the part near the ends of the louver 10, solar energy can be effectively received and converted into electrical energy, thereby maximizing the utilization of solar energy, helping to improve the power generation efficiency of the entire system, and avoiding energy losses caused by overly dense or sparse laminates in some areas.

[0069] It can be understood that by ensuring that the number of photovoltaic laminates 110 between two adjacent wire threading holes 120 is twice that outside the wire threading holes 120 at the ends, the utilization of solar energy can be maximized and the power generation efficiency can be improved.

[0070] In some embodiments, as Figure 1 shown, the main grid lines of the photovoltaic laminate 110 extend along the second direction Y, and the lead-out wires of the photovoltaic laminate 110 are led out from the edge of the photovoltaic laminate 110 in the second direction Y.

[0071] In the technical solution of this application, the main grid lines of the photovoltaic laminate 110 extend along the second direction Y, which helps to optimize the current transmission path inside the photovoltaic laminate 110 and improve the power generation efficiency. The lead-out wires of the photovoltaic laminate 110 are led out from the edge of the photovoltaic laminate 110 in the second direction Y, which helps to reduce the occlusion of other parts of the photovoltaic laminate 110 by the lead-out wires, thereby ensuring that more solar energy is effectively converted into electrical energy.

[0072] It can be understood that the main grid lines of the photovoltaic laminate 110 extend along the second direction Y, while the lead-out wires are led out from the edge of the photovoltaic laminate 110 in the second direction Y, which can optimize current transmission and improve the power generation efficiency, and at the same time ensure that more solar energy is effectively utilized.

[0073] In some embodiments, as Figure 1 shown, there are multiple photovoltaic laminates 110 provided on the louver 10. The multiple photovoltaic laminates 110 on the same louver 10 are connected in series, and the lead-out wires are led out through the photovoltaic laminate 110 at at least one end.

[0074] In the technical solution of this application, a plurality of photovoltaic laminates 110 are evenly distributed on the surface of the louver 10. The photovoltaic laminates 110 can be rectangular or other shapes to adapt to the shape and size of the louver 10. The plurality of photovoltaic laminates 110 on the same louver 10 are connected together in series, that is, the positive electrode of one photovoltaic laminate 110 is connected to the negative electrode of the next photovoltaic laminate 110 to form a continuous circuit, which helps to increase the voltage output of the entire system while maintaining the stability of the current. At least one lead wire is led out through one photovoltaic laminate 110 for leading out the generated electric energy from the photovoltaic laminate 110 and connecting it to a power management system or the power grid.

[0075] When sunlight shines on the photovoltaic laminates 110 on the louver 10, the photovoltaic laminates 110 will absorb light energy and convert it into electric energy. And the plurality of photovoltaic laminates 110 are connected in series, and the generated electric energy will be effectively collected and transmitted to the lead wire. By connecting a plurality of photovoltaic laminates 110 in series, the voltage output of the entire system can be increased, thereby improving the energy collection efficiency. And only the lead wire needs to be led out through the photovoltaic laminate 110 at one end, so the wiring is more concise, reducing unnecessary complexity.

[0076] It can be understood that by arranging a plurality of series-connected photovoltaic laminates 110 on the louver 10 and leading out the lead wire through at least one end of the photovoltaic laminate 110, efficient energy collection and transmission can be achieved, and the wiring and maintenance work can also be simplified.

[0077] In some embodiments, as Figure 1 shown, wiring boxes 20 are arranged on both sides of a plurality of louvers 10. The plurality of photovoltaic laminates 110 lead out lead wires from both sides and are respectively arranged in the wiring boxes 20 on both sides.

[0078] In the technical solution of this application, a plurality of photovoltaic laminates 110 are installed on the louver 10 for absorbing solar energy and converting it into electric energy. The photovoltaic laminates 110 lead out lead wires from both sides, that is, each laminate has two lead wires, one is led out from one side of the louver 10, and the other is led out from the other side. Wiring boxes 20 are arranged on both sides of each louver 10, which can accommodate the lead wires led out from a plurality of photovoltaic laminates 110 and provide sufficient space for electrical connection and wiring, for collecting, managing and distributing the electric energy led out from the photovoltaic laminates 110.

[0079] It can be understood that by arranging wiring boxes 20 on both sides of a plurality of louvers 10 and arranging the lead wires of the plurality of photovoltaic laminates 110 in the wiring boxes 20 on both sides respectively, the space can be fully utilized and the loss of electric energy during transmission can be minimized, improving the energy conversion efficiency of the entire system.

[0080] In some embodiments, at least one end of the wiring box 20 has an opening through which the cable passes.

[0081] In the technical solution of the present application, one or both ends of the wiring box 20 have openings, which can allow the cable to freely enter and leave the wiring box 20. The size and shape of the openings are usually designed according to the diameter and number of the cables to ensure that the cables can pass through smoothly. The lead wires led out from the photovoltaic laminate 110 pass through the wiring box 20 through the openings. One end of the cable is connected to the photovoltaic laminate 110, and the other end may be connected to a power management system, an inverter, or the power grid.

[0082] It can be understood that the openings can enable the cables to directly pass through the wiring box 20 without complex wiring or perforation operations, thus simplifying the wiring process and reducing the maintenance difficulty.

[0083] In some embodiments, as Figure 2 shown, the photovoltaic laminate 110 includes a transparent front plate 111, a power generation cell 112, a connection strip 113, and a back plate 114 that are stacked. A glue film 115 is provided between the transparent front plate 111 and the power generation cell 112, and between the connection strip 113 and the back plate 114.

[0084] In the technical solution of the present application, the photovoltaic laminate 110 is the core part of the photovoltaic module, responsible for converting solar energy into electrical energy. It includes multiple components such as a transparent front plate 111, a power generation cell 112, a connection strip 113, a back plate 114, and a glue film 115. These components are stacked and connected and fixed through the glue film 115.

[0085] The transparent front plate 111 is the outermost layer of the photovoltaic laminate 110, usually made of glass or a transparent polymer material. Its main function is to protect the internal power generation cell 112 from the erosion of the external environment, such as moisture, dust, stains, etc. At the same time, the transparent front plate 111 also allows sunlight to pass through and irradiate onto the power generation cell 112.

[0086] The power generation cell 112 is the core part of the photovoltaic laminate 110, made of silicon or other semiconductor materials. When sunlight irradiates on the cell, it can convert light energy into electrical energy. The cells are usually formed by connecting multiple single cells in series or in parallel to increase the output voltage or current. The connection strip 113 is used to connect multiple power generation cells 112 in series to form a complete circuit, usually made of a conductive material, such as copper foil or silver paste, etc. The arrangement and welding quality of the connection strip 113 have an important impact on the power generation efficiency and service life of the photovoltaic module.

[0087] The backsheet 114 is located in the innermost layer of the photovoltaic laminate 110 and serves the functions of support and protection. It is usually made of materials with good weather resistance, such as aluminum plates, polymer materials, etc., which can prevent the external environment from eroding the internal structure and improve the durability of the photovoltaic module. The encapsulant 115 is located between the transparent front plate 111 and the photovoltaic cells 112, as well as between the connecting strip 113 and the backsheet 114. Its main function is to tightly bond these components together to form an integral structure. At the same time, the encapsulant 115 can also play a role in sealing and moisture-proofing, preventing harmful substances such as moisture from entering the interior of the photovoltaic laminate 110. Commonly used encapsulant 115 materials include ethylene-vinyl acetate copolymer, polyorthoester, and expandable polyethylene, etc.

[0088] It can be understood that through the laminated arrangement of these components and the bonding effect of the encapsulant 115, the photovoltaic laminate 110 forms an efficient, stable, and durable structure that can work for a long time under harsh environmental conditions and convert solar energy into electrical energy.

[0089] In some embodiments, the transparent front plate 111 can be made of a high molecular polymer material. Among them, the high molecular polymer material can include but is not limited to polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyester, polycarbonate, polyvinylidene fluoride, polytetrafluoroethylene, or a combination of two or more of the above.

[0090] In addition, in order to improve the performance of these high molecular polymer materials, various auxiliary materials will be added, such as fillers, plasticizers, lubricants, stabilizers, colorants, and antistatic agents, etc. These additives can enhance the overall performance of the materials and make them more suitable for use in the transparent front plate 111 of the photovoltaic laminate 110.

[0091] The light transmittance range of the transparent front plate 111 reaches more than 93%, and the water permeability is as low as 0.1 g / cm.day.

[0092] Based on the fact that the transparent front plate 111 is made of alicyclic epoxy resin material. First of all, the alicyclic epoxy resin material is a low molecular organic compound. The alicyclic epoxy resin material is a light yellow transparent viscous liquid under normal conditions. Compared with common glass, ETFE (Ethylene-terafluoroethlene) film or transparent polymer, etc., it has a low viscosity and is easy to process. Specifically, the heating time required for the liquid alicyclic epoxy resin to form is 1 hour - 3 hours, and the required heating temperature is 100 degrees Celsius to 200 degrees Celsius. It can be naturally formed without pressure and vacuum conditions during heating, and has low requirements for the process environment and is easy to achieve. Secondly, since the alicyclic epoxy resin is a cyclic structure without a benzene ring, it exhibits excellent properties of resistance to ultraviolet rays and is not prone to yellowing. In addition, the epoxy group of the alicyclic epoxy resin is directly connected to the alicyclic ring, which is more stable than phenolic epoxy resin and has better heat resistance.

[0093] In actual implementation, the processing of the transparent front plate 111 can be achieved through the following steps: Pour the alicyclic epoxy resin liquid into a flat groove of a certain size, and then heat it until the alicyclic epoxy resin liquid solidifies to form a flat transparent thin sheet. Finally, the light transmittance of the processed transparent front plate 111 can reach 91%. Among them, the thickness of the transparent thin sheet during thermoforming can be adjusted according to the actual application of the photovoltaic laminate 110. For example, the thickness of the transparent thin sheet can be 1 mm - 5 mm, etc., to meet the requirements of applications in different environments.

[0094] In some embodiments, the back plate 114 includes: an ultraviolet shielding layer, a moisture barrier layer, a skeleton support layer, and a fluorine-containing protective layer.

[0095] From the direction close to the power generation cell 112 to the direction away from the power generation cell 112, the ultraviolet shielding layer, the moisture barrier layer, the skeleton support layer, and the fluorine-containing protective layer are sequentially stacked.

[0096] Among them, the ultraviolet shielding layer can be composed of a polyvinyl fluoride film or a polyvinylidene fluoride film, or can be composed of other materials; the moisture barrier layer is made of a mixture of various materials, such as polyolefins, polyesters, elastomers, and compatibilizers, etc. These materials are prepared by ternary blending and adjusting the raw material dosage ratio; the skeleton support layer can be composed of PET (polyethylene glycol terephthalate) material, or can be composed of other materials; the fluorine-containing protective layer uses fluorine-containing materials, such as PVF (polyvinyl fluoride polymer film) or PVDF (polyvinylidene difluoride), etc.

[0097] It can be understood that the ultraviolet shielding layer is located in the innermost layer of the backsheet 114, adjacent to the power generation cell 112. The main function of the ultraviolet shielding layer is to block the ultraviolet radiation from the sun, prevent the ultraviolet rays from penetrating the backsheet 114 and damaging the internal battery string; the moisture barrier layer is located outside the ultraviolet shielding layer, and the main function of the moisture barrier layer is to prevent the external moisture from invading the interior of the photovoltaic laminate 110; the skeleton support layer is located outside the moisture barrier layer and is the layer that plays a major supporting role in the backsheet 114, providing sufficient mechanical strength and stability to prevent the backsheet 114 from deforming or cracking under external forces such as wind pressure and snow pressure. At the same time, the skeleton support layer also has certain heat insulation properties, which helps to reduce the working temperature of the photovoltaic laminate 110 and improve the power generation efficiency; the fluorine-containing protective layer is located in the outermost layer of the backsheet 114, directly facing the external environment. The main function of the fluorine-containing protective layer is to provide additional protection to prevent the backsheet 114 from being mechanically damaged, chemically corroded and further eroded by ultraviolet rays. Fluorine-containing materials have excellent weather resistance, chemical resistance and wear resistance, and can maintain the surface smoothness and integrity of the backsheet 114 for a long time. In addition, the fluorine-containing protective layer also has a certain self-cleaning function, which can reduce the adhesion of dust and dirt on the surface of the backsheet 114 and keep the photovoltaic laminate 110 clean and efficiently operating.

[0098] The photovoltaic laminate 110 provided by the embodiment of the present application, through the above structure in which the backsheet 114 is designed to be sequentially stacked by an ultraviolet shielding layer, a moisture barrier layer, a skeleton support layer and a fluorine-containing protective layer, demonstrates high functionality and durability. The overall structure is simple, the functional areas are clear, and the overall miniaturization and lightweight design of the photovoltaic laminate 110 are realized.

[0099] In some embodiments, the transparent front plate 111 is a halogen-free alicyclic epoxy resin.

[0100] As a special alicyclic epoxy resin, the halogen-free alicyclic epoxy resin does not contain ions such as chlorine and sodium during the synthesis process. This enables the transparent front plate 111 made of the halogen-free alicyclic epoxy resin to have good dielectric properties, reducing the impact of the electric field on the internal materials of the photovoltaic laminate 110, thereby reducing the risk of PID (Potential Induced Degradation) and improving the reliability and stability of the photovoltaic laminate 110. At the same time, since the halogen-free alicyclic epoxy resin does not contain toxic substances such as halogens, it has low corrosivity to the battery paste, thus extending the service life of the power generation cell 112 and meeting environmental requirements, helping to reduce the environmental impact of the photovoltaic laminate 110 during production, use, and disposal. Additionally, due to its special molecular structure, the halogen-free alicyclic epoxy resin can form a tight rigid molecular structure, with an increased crosslinking density after curing, so it has a high heat distortion temperature and thermal decomposition temperature. This property enables the transparent front plate 111 to maintain stable performance in a high-temperature environment, contributing to the long-term stable operation of the photovoltaic laminate 110 under high-temperature conditions.

[0101] In the photovoltaic laminate 110 provided by the embodiments of the present application, through the design of the above-mentioned halogen-free alicyclic epoxy resin, the transparent front plate 111 has good dielectric properties, thereby reducing the risk of PID (Potential Induced Degradation), improving the reliability and stability of the photovoltaic laminate 110, reducing the corrosivity to the battery paste, thus extending the service life of the power generation cell 112, while helping to reduce the environmental impact of the photovoltaic laminate 110 during production, use, and disposal, and the transparent front plate 111 can still maintain stable performance in a high-temperature environment, contributing to the long-term stable operation of the photovoltaic laminate 110 under high-temperature conditions.

[0102] In some embodiments, the adhesive film 115 is an EVA adhesive film 115, a POE adhesive film 115, or an EPE adhesive film 115.

[0103] The adhesive film 115 is an adhesive with conductive properties. The adhesive film 115 can form a conductive path after curing. The adhesive film 115 can include, but is not limited to, an EVA adhesive film 115, a POE adhesive film 115, or an EPE adhesive film 115, and there is no limitation here.

[0104] Among them, the EVA adhesive film 115 is made of ethylene-vinyl acetate copolymer, the POE adhesive film 115 is made of polyorthoester, and the EPE adhesive film 115 is made of expandable polyethylene.

[0105] In some embodiments, the photovoltaic laminate 110 further includes: a soldering aid structure disposed between the back electrode of the power generation cell 112 and the connection strip 113; an insulating adhesive may be provided on the back surface of the power generation cell 112, and the insulating adhesive covers the peripheral area of the main grid line of the back electrode of the power generation cell 112.

[0106] The back surface of the power generation cell 112 is composed of positive and negative main grid lines and auxiliary grid lines spaced apart to form a back electrode. Among them, the positive electrode can be printed with aluminum paste, and the negative electrode can be printed with silver paste.

[0107] In the photovoltaic laminate 110 provided by the embodiments of the present application, through the arrangement of the above-mentioned plurality of connection strips 113, the plurality of power generation cells 112 can be connected in series in sequence. Without adding additional components, the voltage is superimposed, and the output voltage of the entire photovoltaic laminate 110 is increased; and it helps to balance the charge distribution among the plurality of power generation cells 112, reduce the mutual influence among the plurality of power generation cells 112, and further improve the stability and safety of the photovoltaic laminate 110.

[0108] In some embodiments, the photovoltaic laminate 110 further includes: a soldering aid structure disposed between the back electrode of the power generation cell 112 and the connection strip 113.

[0109] In this embodiment, the soldering aid structure is a structure formed after a solder material is cured. The specific process may include: printing the solder material at the back electrode of the power generation cell 112 by means of a screen printing steel mesh plate, and then curing it by means of heat reflow soldering to form a soldering aid structure. The connection strip 113 can be connected to the back electrode of the power generation cell 112 through this soldering aid structure to improve the welding quality and reduce the welding difficulty.

[0110] Among them, the components of the solder material may include but are not limited to Sn63Pb37, Sn60Pb40, Sn58Bi42Ag1, Sn58Bi42 or Sn43Pb43bi14, etc., and there is no limitation here.

[0111] For example, in some embodiments, the component of the solder material is Sn58Bi42.

[0112] In the photovoltaic laminate 110 provided by the embodiments of the present application, through the arrangement of the above-mentioned soldering aid structure, the contact area and morphology of the welding interface are optimized, so that the connection between the back electrode of the power generation cell 112 and the connection strip 113 is more firm and uniform. The good welding quality reduces the increase in resistance and energy loss caused by poor welding, thereby helping to improve the overall conversion efficiency of the photovoltaic laminate 110. In addition, the soldering aid structure can also resist the influence of environmental factors to a certain extent, such as humidity, temperature change, etc., protect the welded part from erosion, and extend the service life of the photovoltaic laminate 110.

[0113] In some embodiments, an insulating adhesive may be provided on the back surface of the power generation cell 112, and the insulating adhesive covers the peripheral region of the main grid line of the back electrode of the power generation cell 112.

[0114] Among them, the material of the insulating adhesive may include but is not limited to epoxy resin, polyimide, silicone, etc., and there is no limitation here.

[0115] For example, in some embodiments, the material of the insulating adhesive is epoxy resin.

[0116] The color of the insulating adhesive may be transparent, green, blue, yellow, etc., and there is no limitation here.

[0117] For example, in some embodiments, the color of the insulating adhesive is transparent.

[0118] In the photovoltaic laminate 110 provided by the embodiments of the present application, through the above setting of the insulating adhesive, the insulating adhesive covers the peripheral region of the main grid line of the back electrode of the power generation cell 112, effectively preventing the direct contact between the back electrode and the external environment, avoiding performance degradation or failure caused by corrosion, oxidation, etc. At the same time, the presence of the insulating adhesive reduces safety hazards such as fires caused by electrical short circuits, ensuring safety during use. And the good insulation performance of the insulating adhesive reduces energy loss caused by electric leakage, which helps to improve the overall conversion efficiency of the photovoltaic laminate 110.

[0119] The embodiments of the present application also provide a household photovoltaic system, including: a solar curtain 1 and a household power supply, and the household power supply is electrically connected to the cable of the solar curtain 1.

[0120] In the technical solution of the present application, the household photovoltaic system combines the solar curtain 1 and the household power supply, and can achieve self-sufficiency and efficient utilization of energy through photovoltaic technology. The solar curtain 1 can adopt a special photovoltaic material or integrate the photovoltaic laminate 110, which can absorb solar energy and convert it into electrical energy, while the household power supply is responsible for storing and managing this electrical energy to provide power support for the family.

[0121] It can be understood that the household photovoltaic system collects solar energy through the solar curtain 1 and converts it into electrical energy, which can achieve self-sufficiency of energy and reduce dependence on the external power grid. As a part of the building, the solar curtain 1 can not only play a role in shading and heat insulation, but also make full use of the building surface area to collect solar energy and convert it into electrical energy, improving the energy utilization efficiency.

[0122] The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of this application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are usually of the same category, and do not limit the number of objects. For example, the first object can be one or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects before and after.

[0123] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this 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 cannot be understood as a limitation of this application.

[0124] In the description of this application, the "first feature" and "second feature" may include one or more of such features.

[0125] In the description of this application, the meaning of "a plurality" is two or more.

[0126] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween.

[0127] In the description of this application, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature.

[0128] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0129] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A solar curtain, characterized in that, Comprising: A plurality of louvers, the plurality of louvers are distributed along a first direction, and a photovoltaic laminate is provided on the louvers; An operating rope, each of the plurality of louvers is connected to the operating rope; A wiring box, the wiring box extends along the first direction and is arranged side by side with the plurality of louvers in a second direction intersecting the majority of the first directions, at least a part of the lead-out wire of the photovoltaic laminate is arranged in the wiring box; A cable, the wiring box is provided with a cable and is electrically connected to the lead-out wire.

2. The solar curtain according to claim 1, characterized in that, The louver is provided with a wire passing hole, the operating rope passes through the wire passing hole, and the photovoltaic laminates are arranged on both sides of the wire passing hole.

3. The solar curtain according to claim 2, wherein The louver is provided with a plurality of wire passing holes distributed along the second direction.

4. The solar curtain according to claim 3, characterized in that, The number of the photovoltaic laminates between two adjacent wire passing holes is equal to twice the number of the photovoltaic laminates outside the wire passing hole at the end.

5. The solar curtain according to claim 1, characterized in that, The main grid line of the photovoltaic laminate extends along the second direction, and the lead-out wire of the photovoltaic laminate is led out from the edge of the photovoltaic laminate in the second direction.

6. The solar curtain according to any one of claims 1-5, characterized in that, A plurality of photovoltaic laminates are provided on the louver, the plurality of photovoltaic laminates on the same louver are connected in series, and the lead-out wire is led out through at least one end of the photovoltaic laminate.

7. The solar curtain according to claim 6, wherein The wiring boxes are arranged on both sides of the plurality of louvers, the plurality of photovoltaic laminates lead out the lead-out wires from both sides and are respectively arranged in the wiring boxes on both sides.

8. The solar curtain according to any one of claims 1-5, characterized in that, At least one end of the wiring box has an opening, and the cable penetrates through the opening.

9. The solar curtain according to any one of claims 1-5, characterized in that, The photovoltaic laminate includes a transparent front plate, a power generation cell, a connection strip and a back plate which are stacked, and there are adhesive films between the transparent front plate and the power generation cell, and between the connection strip and the back plate.

10. The solar curtain according to claim 9, characterized in that, The transparent front plate is a polymer, and the light transmittance is ≥93%, and the water permeability is ≤0.1g / cm.day; And / or The back plate is a polymer, including a UV shielding layer, a water vapor barrier layer, a skeleton support layer and a fluorine-containing protective layer which are sequentially stacked, from the direction close to the power generation cell to the direction away from the power generation cell; And / or The adhesive film is an EVA adhesive film, a POE adhesive film or an EPE adhesive film.

11. The solar curtain according to claim 9, wherein The transparent front plate is a halogen-free alicyclic epoxy resin.

12. The solar curtain according to claim 9, characterized in that, The photovoltaic laminate further includes: a soldering aid structure, the soldering aid structure is arranged between the back electrode of the power generation cell and the connection strip; An insulating adhesive can be arranged on the back of the power generation cell, and the insulating adhesive covers the peripheral area of the main grid line of the back electrode of the power generation cell.

13. A household photovoltaic system, characterized in that, Comprising: The solar curtain according to any one of claims 1-12; A household power supply, the household power supply is electrically connected to the cable of the solar curtain.

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