Building facade photovoltaic curtain wall

Abstract

The application relates to a building facade photovoltaic curtain wall, which comprises concrete-imitating photovoltaic curtain wall modules, light-transmitting photovoltaic curtain wall modules and ventilation opening flaps; a plurality of concrete-imitating photovoltaic curtain wall modules are assembled and spliced into a light-proof curtain wall; a plurality of light-transmitting photovoltaic curtain wall modules are assembled and spliced into a light-transmitting curtain wall; wherein the light-transmitting rate of the light-transmitting curtain wall is differentially arranged in the longitudinal direction. The application has the advantages of multifunctional integration, and has the functions of photovoltaic power generation, sun-shading, light-collecting and ventilation performance, has strong adaptability and expansibility, and can be flexibly adjusted according to the use functions and modeling features of different parts of the building facade.

Description

Technical Field

[0001] This application belongs to the field of building photovoltaic curtain wall technology, and specifically relates to a building facade photovoltaic curtain wall. Background Technology

[0002] Currently, photovoltaic curtain walls on the market are mainly divided into two categories in terms of appearance: the first category is opaque photovoltaic curtain walls, which can simulate traditional facade materials such as aluminum panels and concrete; the second category is translucent photovoltaic curtain walls, which have both light transmission and power generation functions and can replace conventional modular glass.

[0003] Currently available photovoltaic curtain wall systems suffer from the following limitations and technical shortcomings:

[0004] 1. Architectural Appearance: Existing products have a single form and are usually applied to large, flat facades with uniform materials. For facades with complex volume variations and diverse materials, there is a lack of flexible photovoltaic product combination solutions.

[0005] 2. Indoor comfort: Different rooms have different needs for lighting, views and natural ventilation, but existing systems often sacrifice indoor environmental quality in order to take into account the overall appearance or power generation efficiency.

[0006] 3. Economic Benefits: First, the effectiveness of building facade photovoltaics is greatly affected by environmental factors, often preventing the use of the most efficient deep blue material throughout the entire facade. Second, for rooms requiring natural lighting and ventilation, as mentioned above, using ordinary glass windows sacrifices this portion of power generation efficiency. Third, regarding cost, cadmium telluride photovoltaic glass, for example, costs 800-1200 yuan / square meter, has a lifespan of 25 years, and its power generation revenue can cover the cost in about 10-15 years. Ordinary laminated glass costs 200-400 yuan / square meter. Given these factors, the key to balancing economic benefits lies in how to design a solution that covers as much photovoltaic coverage as possible on the building facade while using the most efficient photovoltaic materials.

[0007] 4. Construction efficiency: Traditional frame curtain walls require on-site segmented assembly. When multiple photovoltaic products, glass, and aluminum panel modules are installed together, the construction complexity and construction period increase significantly. Utility Model Content

[0008] In view of the above analysis, the present utility model aims to provide a photovoltaic curtain wall for building facades to solve one or more of the above-mentioned problems existing in the prior art.

[0009] The purpose of this utility model is achieved as follows:

[0010] A photovoltaic curtain wall for building facades, comprising:

[0011] Imitation concrete photovoltaic curtain wall modules, multiple imitation concrete photovoltaic curtain wall modules are assembled and spliced ​​to form an opaque curtain wall;

[0012] Translucent photovoltaic curtain wall modules, multiple translucent photovoltaic curtain wall modules are assembled and spliced ​​to form a translucent curtain wall;

[0013] The light transmittance of the translucent curtain wall is differentiated in the longitudinal direction.

[0014] Furthermore, the light transmittance of the light-transmitting curtain wall has a first light transmittance, a second light transmittance, a third light transmittance, and a fourth light transmittance in the longitudinal direction from top to bottom; wherein, the first light transmittance < the second light transmittance = the fourth light transmittance < the third light transmittance.

[0015] Furthermore, the first transmittance is 40%, the second transmittance is 60%, the third transmittance is 100%, and the fourth transmittance is 60%.

[0016] Furthermore, the first transmittance ranges from 3.6 meters to 4.8 meters above the ground; the second transmittance ranges from 2.4 meters to 3.6 meters above the ground; the third transmittance ranges from 1.2 meters to 2.4 meters above the ground; and the fourth transmittance ranges from 0 meters to 1.2 meters above the ground.

[0017] Furthermore, the translucent curtain wall and the opaque curtain wall are arranged parallel to each other, and the translucent curtain wall protrudes outward from the opaque curtain wall. The translucent curtain wall and the opaque curtain wall are connected by a vertical side wall, and a ventilation fan is provided on the vertical side wall.

[0018] Furthermore, from indoors to outdoors, the simulated concrete photovoltaic curtain wall module is sequentially provided with an indoor finish, an insulation layer, an indoor side glass, a bonding layer a, a photovoltaic layer, a bonding layer b, and an outdoor side glass.

[0019] Furthermore, the insulation layer uses 100mm thick cotton rock; both the indoor and outdoor glass layers use 6mm thick ultra-clear tempered glass; both bonding layers a and b use 1.52mm thick PVB film; and the photovoltaic layer uses 3.2mm thick cadmium telluride photovoltaic film.

[0020] Furthermore, from indoors to outdoors, the light-transmitting photovoltaic curtain wall module is sequentially provided with indoor side glass 2, bonding layer 2a, photovoltaic layer 2, bonding layer 2b, outdoor side glass 2, air layer and outer sealing sheet.

[0021] Furthermore, both the indoor and outdoor glass layers are made of 6mm thick ultra-clear tempered glass; both bonding layers 2a and 2b are made of 1.52mm thick PVB film; the photovoltaic layer 2 is made of 3.2mm thick cadmium telluride photovoltaic film; and the outer sealing layer is made of 8mm thick ultra-clear tempered glass.

[0022] Furthermore, adjacent imitation concrete photovoltaic curtain wall modules and adjacent translucent photovoltaic curtain wall modules are connected by plug-in connection; both the imitation concrete photovoltaic curtain wall modules and the translucent photovoltaic curtain wall modules have independent electrical circuits.

[0023] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0024] a) The photovoltaic curtain wall for building facades provided by this utility model has the advantages of multi-functional integration, combining photovoltaic power generation, sun shading, lighting, and ventilation performance; the photovoltaic modules are organically integrated with the curtain wall structure, resulting in a unified appearance and high performance; it has strong adaptability and expandability, and can be flexibly adjusted according to the usage functions and styling characteristics of different parts of the building facade. It can not only adapt to the specific size requirements of the building, but also be expanded according to the facade design needs. For example, the height and width of the curtain wall modules, the ratio of light-transmitting to non-light-transmitting parts, and the size of the ventilation openings can be flexibly adjusted according to the building facade design to adapt to different usage needs from fully enclosed spaces to spaces with high requirements for natural lighting.

[0025] b) The photovoltaic curtain wall for building facades provided by this utility model, the imitation concrete photovoltaic curtain wall module and the light-transmitting photovoltaic curtain wall module are modularly prefabricated and use a plug-in splicing method, which makes installation and maintenance more convenient; the standardized component processing and prefabrication production can significantly reduce on-site installation time and labor costs; in the later maintenance, local units can be quickly disassembled and replaced, improving the overall life of the system and the convenience of operation and maintenance.

[0026] c) The photovoltaic curtain wall for building facades provided by this utility model is a photovoltaic curtain wall design and construction technology applicable to complex building facade systems. It can realize the organic integration of building facade shape and photovoltaic power generation system. It is particularly suitable for buildings with complex shapes, diverse materials, and diverse indoor lighting and ventilation requirements. It is of great significance for promoting the widespread application of photovoltaic unitized curtain walls in actual building projects. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings.

[0028] Figure 1 A schematic diagram of the first angle structure of the photovoltaic curtain wall on the building facade provided by this utility model;

[0029] Figure 2 A schematic diagram of the second angle structure of the photovoltaic curtain wall on the building facade provided by this utility model;

[0030] Figure 3 A schematic diagram of the third angle structure of the photovoltaic curtain wall on the building facade provided by this utility model;

[0031] Figure 4 A structural schematic diagram of the imitation concrete photovoltaic curtain wall module provided by this utility model;

[0032] Figure 5 A schematic diagram of the structure of the light-transmitting photovoltaic curtain wall module provided by this utility model;

[0033] Figure 6 A schematic diagram of the vertical keel insertion of the curtain wall module provided by this utility model.

[0034] Figure label:

[0035] 1. Imitation concrete photovoltaic curtain wall module; 11. Interior finish; 12. Insulation layer; 13. Interior side glass 1; 14. Bonding layer 1a; 15. Photovoltaic layer 1; 16. Bonding layer 1b; 17. Exterior side glass 1;

[0036] 2. Translucent photovoltaic curtain wall module; 21. Indoor side glass 2; 22. Bonding layer 2a; 23. Photovoltaic layer 2; 24. Bonding layer 2b; 25. Outdoor side glass 2; 26. Air layer; 27. Outer sealing film;

[0037] 3. Facade;

[0038] 4. Ventilation fan on;

[0039] 5. Civil engineering beam structure; 51. Embedded parts;

[0040] 6. Vertical keel; 61. Insertion end; 62. Port;

[0041] 7. Horizontal keel. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. It should be noted that, unless otherwise specified, the implementation methods and features in the implementation methods in this disclosure can be combined, separated, interchanged, and / or rearranged. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] In the accompanying drawings, the dimensions and relative dimensions of components may be exaggerated for clarity and / or descriptive purposes. When exemplary embodiments can be implemented differently, a specific process sequence may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in the reverse order of their description. Furthermore, the same reference numerals denote the same components.

[0044] The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms “a” and “the” are intended to include the plural forms as well. Furthermore, when the terms “comprising” and / or “including” and variations thereof are used in this specification, it indicates the presence of the stated features, integrals, steps, operations, parts, components, and / or groups thereof, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, parts, components, and / or groups thereof. It should also be noted that, as used herein, the terms “substantially,” “about,” and other similar terms are used as approximate terms rather than as terms of degree, thus explaining the inherent biases in measurements, calculated values, and / or provided values ​​that would be recognized by one of ordinary skill in the art.

[0045] Example 1

[0046] A specific embodiment of this utility model is as follows: Figures 1 to 3 As shown, a photovoltaic curtain wall for building facades is disclosed, comprising:

[0047] The imitation concrete photovoltaic curtain wall module 1 is opaque. In addition to the basic architectural functions of a concrete curtain wall, it also has photovoltaic power generation function. Multiple imitation concrete photovoltaic curtain wall modules 1 are assembled and spliced ​​to form an opaque curtain wall.

[0048] Translucent photovoltaic curtain wall module 2 has light transmission and is suitable for the dual functions of photovoltaic power generation and building interior lighting. Multiple translucent photovoltaic curtain wall modules 2 are assembled and spliced ​​to form a translucent curtain wall.

[0049] The light transmittance of the translucent curtain wall is differentiated along its longitudinal direction; specifically, the light transmittance of the translucent curtain wall has a first light transmittance, a second light transmittance, a third light transmittance, and a fourth light transmittance from top to bottom along its longitudinal direction. The light transmittance at each location can be set according to factors such as the height of the indoor space, the range of human height, and the requirements for indoor lighting.

[0050] In one optional embodiment, the first light transmittance < the second light transmittance = the fourth light transmittance < the third light transmittance. For example, the first light transmittance is 40%, the second light transmittance is 60%, the third light transmittance is 100%, and the fourth light transmittance is 60%. The first light transmittance ranges from 3.6 meters to 4.8 meters above the ground; the second light transmittance ranges from 2.4 meters to 3.6 meters above the ground; the third light transmittance ranges from 1.2 meters to 2.4 meters above the ground; and the fourth light transmittance ranges from 0 to 1.2 meters above the ground. Photovoltaic curtain wall modules 2 with adjacent light transmittance ranges are seamlessly spliced. While ensuring a continuous and natural transition of the facade 3, the 100% light transmittance portion effectively shields building beams and pipelines, while the 60% and 100% light transmittance portions ensure natural indoor lighting. The 100% light transmittance portion is near eye level, ensuring it does not obstruct the view.

[0051] Preferably, the light transmittance is the same at different locations on each light-transmitting photovoltaic curtain wall module 2.

[0052] To improve indoor ventilation, ventilation fans 4 are also provided. Specifically, the translucent curtain wall and the opaque curtain wall are arranged parallel to each other, with the translucent curtain wall protruding outwards from the opaque curtain wall. The translucent and opaque curtain walls are connected by vertical side walls, which are perpendicular to both the translucent and opaque curtain walls. Ventilation fans 4 are installed on the vertical side walls. In other words, lateral ventilation fans 4 are installed on the protruding part of the translucent photovoltaic curtain wall to effectively introduce external air and enhance indoor air circulation. The ventilation fans 4 are arranged on both sides of the facade 3, without affecting the photovoltaic coverage of the front facade 3, effectively balancing ventilation efficiency and power generation area, and combining energy saving and living comfort. Optionally, the vertical side walls can be constructed by splicing the structure with the imitation concrete photovoltaic curtain wall module 1.

[0053] In one alternative embodiment, the structure of the simulated concrete photovoltaic curtain wall module 1 is as follows: Figure 4As shown, from indoors to outdoors, the simulated concrete photovoltaic curtain wall module 1 is sequentially provided with an indoor finish 11, an insulation layer 12, an indoor side glass 13, a bonding layer a14, a photovoltaic layer 15, a bonding layer b16, and an outdoor side glass 17. For example, the insulation layer 12 is made of 100mm thick cotton-like material; both the indoor side glass 13 and the outdoor side glass 17 are made of 6mm thick ultra-clear tempered glass; both the bonding layers a14 and b16 are made of 1.52mm thick PVB film; and the photovoltaic layer 15 is made of 3.2mm thick cadmium telluride photovoltaic film.

[0054] In one alternative embodiment, the structure of the light-transmitting photovoltaic curtain wall module 2 is as follows: Figure 5 As shown, from indoors to outdoors, the translucent photovoltaic curtain wall module 2 is sequentially provided with indoor side glass 21, bonding layer 2a22, photovoltaic layer 23, bonding layer 2b24, outdoor side glass 25, air layer 26, and outer sealing sheet 27. For example, both indoor side glass 21 and outdoor side glass 25 are made of 6mm thick ultra-clear tempered glass; both bonding layers 2a22 and 2b24 are made of 1.52mm thick PVB film; photovoltaic layer 23 is made of 3.2mm thick cadmium telluride photovoltaic film; and outer sealing sheet 27 is made of 8mm thick ultra-clear tempered glass.

[0055] In this embodiment, both the simulated concrete photovoltaic curtain wall module 1 and the translucent photovoltaic curtain wall module 2 have aluminum alloy profile keels. Adjacent simulated concrete photovoltaic curtain wall modules 1 and adjacent translucent photovoltaic curtain wall modules 2 are assembled using a plug-in connection method to form a complete curtain wall structure. The simulated concrete photovoltaic curtain wall modules 1 and translucent photovoltaic curtain wall modules 2 are prefabricated and assembled in the factory. Each module can be installed and replaced independently, achieving standardized production and modular construction. This significantly improves the efficiency of transportation, assembly, and on-site maintenance. Compared to traditional frame curtain walls, the quality is controllable, the completion rate is high, and the on-site construction period can be reduced by 30% to 50%.

[0056] Reference Figure 6 Each of the aluminum alloy profile keels of the simulated concrete photovoltaic curtain wall module 1 and each of the translucent photovoltaic curtain wall modules 2 has four vertical keels 6. The vertical keels 6 are hollow structures and can be round or square tubes. A horizontal keel 7 connects two adjacent vertical keels 6. Both the vertical keels 6 and the horizontal keels 7 are made of hot-dip galvanized steel pipes. Two of the vertical keels 6 of each module are connected to the embedded parts 51 in the civil engineering beam structure 5. One end of the vertical keel 6 of each curtain wall module is a thinner insertion end 61, and the size of the port 62 at the other end is adapted to the size of the insertion end 61 for insertion, so that two adjacent curtain wall modules can be connected by inserting the vertical keels 6.

[0057] In one alternative embodiment, both the imitation concrete photovoltaic curtain wall module 1 and the translucent photovoltaic curtain wall module 2 have independent electrical circuits, with the wires concealed inside the curtain wall vertical keel 6. The load can be adjusted according to functional area groups or connected to the intelligent energy management system to achieve efficient building energy utilization and maintenance management.

[0058] Compared with existing technologies, the photovoltaic curtain wall for building facades provided in this embodiment can achieve at least one of the following beneficial effects:

[0059] 1. Architectural effect presentation: Matching the facade shape and material requirements, the opaque photovoltaic curtain wall module can simulate the effect of traditional solid materials, while the translucent photovoltaic curtain wall module is suitable for transparent or semi-transparent material requirements. The curtain wall system as a whole can be flexibly adapted to the concave and convex changes of the facade, supporting complex shape designs and presenting rich facade textures.

[0060] 2. Indoor Comfort: Through the rational arrangement of simulated concrete photovoltaic curtain wall modules and translucent photovoltaic curtain wall modules, indoor environmental requirements can be met. Translucent photovoltaic curtain wall modules with different light transmittance can be matched to the lighting requirements of each room. For rooms where users desire views, ordinary glass can be appropriately used. For ventilation requirements of each room, ventilation fans can be installed according to the ventilation area. This utility model integrates multiple functions such as photovoltaic power generation, sun shading, natural ventilation, and indoor lighting, adapting to the specific usage requirements of different rooms.

[0061] 3. Economic Benefits: Improved energy efficiency. Except for the viewing windows located at eye level, which use ordinary glass (100% light transmittance), the remaining areas use photovoltaic units. A variety of photovoltaic glass with different light transmittances can be combined in a gradual manner to maximize photovoltaic coverage and photovoltaic power generation efficiency while taking into account both the building facade effect and indoor comfort. This achieves a balance between effect and energy efficiency and shortens the investment payback period. Moreover, modular integration reduces secondary processing and waste, helping to quickly recover costs.

[0062] 4. Construction efficiency: Modular prefabrication reduces on-site assembly, significantly improving installation speed and quality control. Moreover, the modular design allows for flexible adjustment of unit size and functional configuration according to the building's column grid size, floor height, and room function requirements, reducing on-site construction workload, improving construction efficiency, and saving 30%–50% of the construction period.

[0063] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this application. It should be understood that the above description is only a specific embodiment of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A photovoltaic curtain wall for building facades, characterized in that, include: Imitation concrete photovoltaic curtain wall modules, multiple imitation concrete photovoltaic curtain wall modules are assembled and spliced ​​to form an opaque curtain wall; Translucent photovoltaic curtain wall modules, multiple translucent photovoltaic curtain wall modules are assembled and spliced ​​to form a translucent curtain wall; The light transmittance of the translucent curtain wall is differentiated in the longitudinal direction.

2. The photovoltaic curtain wall for building facades according to claim 1, characterized in that, The light transmittance of the light-transmitting curtain wall has a first light transmittance, a second light transmittance, a third light transmittance, and a fourth light transmittance in the longitudinal direction from top to bottom; Among them, the first transmittance < the second transmittance = the fourth transmittance < the third transmittance.

3. The photovoltaic curtain wall for building facades according to claim 2, characterized in that, The first transmittance is 40%, the second transmittance is 60%, the third transmittance is 100%, and the fourth transmittance is 60%.

4. The photovoltaic curtain wall for building facades according to claim 3, characterized in that, The first transmittance ranges from 3.6 meters to 4.8 meters above the ground; The second transmittance ranges from 2.4 meters to 3.6 meters above the ground; The range of the third light transmittance is from 1.2 meters to 2.4 meters above the ground; The range of the fourth transmittance is 0 to 1.2 meters above the ground.

5. The photovoltaic curtain wall for building facades according to claim 1, characterized in that, The translucent curtain wall is arranged parallel to the opaque curtain wall, and the translucent curtain wall protrudes outward from the opaque curtain wall. The translucent curtain wall and the opaque curtain wall are connected by a vertical side wall, and a ventilation fan is provided on the vertical side wall.

6. The photovoltaic curtain wall for building facades according to claim 1, characterized in that, From indoors to outdoors, the simulated concrete photovoltaic curtain wall module is provided with an indoor finish, an insulation layer, an indoor side glass, a bonding layer a, a photovoltaic layer, a bonding layer b, and an outdoor side glass in sequence.

7. The photovoltaic curtain wall for building facades according to claim 6, characterized in that, The insulation layer uses 100mm thick cotton-like rock; Both the indoor and outdoor glass panels are made of 6mm thick ultra-clear tempered glass. Both bonding layer 1a and bonding layer 1b are made of PVB film with a thickness of 1.52 mm; The photovoltaic layer uses a 3.2mm thick cadmium telluride photovoltaic thin film.

8. The photovoltaic curtain wall for building facades according to claim 1, characterized in that, From indoors to outdoors, the translucent photovoltaic curtain wall module is sequentially provided with indoor side glass 2, bonding layer 2a, photovoltaic layer 2, bonding layer 2b, outdoor side glass 2, air layer and outer sealing sheet.

9. The photovoltaic curtain wall for building facades according to claim 8, characterized in that, Both the indoor and outdoor glass panels are made of 6mm thick ultra-clear tempered glass. Both bonding layer 2a and bonding layer 2b are made of PVB film with a thickness of 1.52 mm; The second photovoltaic layer uses a 3.2mm thick cadmium telluride photovoltaic thin film; The outer sealing film is made of 8mm thick ultra-clear tempered glass.

10. The photovoltaic curtain wall for building facades according to claim 1, characterized in that, The adjacent two imitation concrete photovoltaic curtain wall modules and the adjacent two translucent photovoltaic curtain wall modules are connected by plug-in connection. Both the imitation concrete photovoltaic curtain wall module and the translucent photovoltaic curtain wall module have independent electrical circuits.

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