An adjustable photovoltaic curtain wall for zero-carbon buildings

Abstract

The present invention provides an adjustable photovoltaic curtain wall for zero-carbon buildings. By setting an outer frame on the outer facade of the building, transparent support plates are provided on both sides of the outer frame, and a number of passive light-tracking photovoltaic modules are installed through the transparent support plates. The first SMA spring group / second SMA spring group absorbs heat and deforms, and through the first connecting rod / second connecting rod, the first photovoltaic panel / second photovoltaic panel is pushed to rotate towards the inside of the photovoltaic frame, so that the first photovoltaic panel / second photovoltaic panel faces the sun rays as much as possible in the front, achieving the effect of passive light tracking. This solves the problem that in the prior art, photovoltaic panels usually rotate through active driving by devices such as motors, hydraulic cylinders, air pumps, and electric push-pull rods. These driving devices such as motors, hydraulic cylinders, air cylinders, and electric push-pull rods not only consume electric energy and reduce the net power generation of the photovoltaic curtain wall, but also when there are more photovoltaic panels, the required driving devices will increase accordingly, thus increasing the installation cost. In addition, it will also lead to high complexity in installation, maintenance, and replacement, and high labor intensity.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic curtain walls, and particularly relates to an adjustable photovoltaic curtain wall for zero-carbon buildings. Background Art

[0002] A zero-carbon building refers to a building with zero carbon emissions, which can operate independently of the power grid and rely on solar energy or wind energy. A photovoltaic curtain wall is the main technical means for a zero-carbon building to absorb solar energy.

[0003] As a new building structure that utilizes solar energy, a photovoltaic curtain wall can convert solar energy into electrical energy, provide electricity for the building, reduce carbon emissions, and can also be combined with architectural design to achieve the unity of beauty and function of the building, which conforms to the concept of sustainable development.

[0004] Currently, in order to make full use of solar energy, the photovoltaic panels of a photovoltaic curtain wall will rotate as the irradiation angle of the sun's rays changes during the day. However, in the prior art, the photovoltaic panels are usually driven to rotate actively by devices such as motors, hydraulic cylinders, air pumps, and electric push rods. These driving devices such as motors, hydraulic cylinders, air cylinders, and electric push rods not only consume electrical energy and reduce the net power generation of the photovoltaic curtain wall, but also when there are more photovoltaic panels, the required driving devices will increase accordingly, thereby increasing the installation cost, and will also lead to high complexity in installation, maintenance, and replacement, and high labor intensity. Summary of the Invention

[0005] The purpose of the embodiments of the present application is to provide an adjustable photovoltaic curtain wall for zero-carbon buildings, which is used to solve the technical problems in the prior art that the photovoltaic panels are usually driven to rotate actively by devices such as motors, hydraulic cylinders, air pumps, and electric push rods. These driving devices such as motors, hydraulic cylinders, air cylinders, and electric push rods not only consume electrical energy and reduce the net power generation of the photovoltaic curtain wall, but also when there are more photovoltaic panels, the required driving devices will increase accordingly, thereby increasing the installation cost, and will also lead to high complexity in installation, maintenance, and replacement, and high labor intensity.

[0006] To achieve the above purpose, the embodiments of the present application adopt the following technical solutions:

[0007] An adjustable photovoltaic curtain wall for zero-carbon buildings includes an outer frame, a transparent support plate, and a plurality of passive light-tracking photovoltaic modules;

[0008] One of the transparent support plates is installed on each side of the outer frame;

[0009] A plurality of the passive light-tracking photovoltaic modules are uniformly arranged in the outer frame along the vertical direction of the outer frame. The passive light-tracking photovoltaic module includes a photovoltaic frame, a first photovoltaic panel, a second photovoltaic panel, a first rotating shaft, a second rotating shaft, a first SMA spring group, a second SMA spring group, a first connecting rod, a second connecting rod, a first slider, and a second slider;

[0010] Rotating shafts and mounting through slots are arranged on both horizontal sides of the photovoltaic frame, and the two rotating shafts are respectively rotationally connected to the two transparent support plates;

[0011] The first rotating shaft and the second rotating shaft are arranged at intervals in the middle of the photovoltaic frame, and both ends of each of them are respectively rotationally connected to the top end and the bottom end of the photovoltaic frame, and the first rotating shaft is located on the left side of the second rotating shaft;

[0012] The right side of the first photovoltaic panel is connected to the first rotating shaft, its left side is rotationally connected to the first connecting rod, the other end of the first connecting rod is rotationally connected to the first slider, the first slider is connected to the first SMA spring group, the left side of the second photovoltaic panel is connected to the second rotating shaft, its right side is rotationally connected to the second connecting rod, the other end of the second connecting rod is rotationally connected to the second slider, the second slider is connected to the second SMA spring group, the first SMA spring group and the second SMA spring group are respectively vertically arranged in the two mounting through slots, and the sides of the first SMA spring group away from the first photovoltaic panel and the second SMA spring group away from the second photovoltaic panel are respectively flush with the left and right outer side surfaces of the photovoltaic frame.

[0013] In an adjustable photovoltaic curtain wall of a zero-carbon building according to an embodiment of the present application, the mounting through slot includes a first through slot and a second through slot arranged coaxially. The first through slot is located below the second through slot. The second through slot is provided with a limiting sliding slot. The first SMA spring group and the second SMA spring group both include a lower SMA spring, an upper SMA spring, and a connecting plate;

[0014] The lower SMA spring is located in the first through slot, its bottom end is connected to the photovoltaic frame, and its top end is connected to the connecting plate. The connecting plate is slidably connected to the limiting sliding slot. The upper SMA spring is located in the second through slot, its bottom end is connected to the connecting plate, and its top end is connected to the first slider and the second slider. The length of the first through slot is equal to the length of the lower SMA spring at normal temperature. The length of the second through slot is equal to the sum of the length of the upper SMA spring at normal temperature and the thickness of the connecting plate. When both the lower SMA spring and the upper SMA spring are in the normal temperature state, the first slider and the second slider are supported on the top of the second through slot.

[0015] In an adjustable photovoltaic curtain wall for a zero-carbon building according to an embodiment of the present application, heat-absorbing coatings are provided on one side of the lower SMA spring flush with the outer side of the photovoltaic frame and one side of the upper SMA spring flush with the outer side of the photovoltaic frame, and reflective silver films are provided on the side of the lower SMA spring away from the outer side of the photovoltaic frame and the side of the upper SMA spring away from the outer side of the photovoltaic frame.

[0016] In an adjustable photovoltaic curtain wall for a zero-carbon building according to an embodiment of the present application, aerogel heat-insulating sheets are provided on the wall of the installation through groove.

[0017] In an adjustable photovoltaic curtain wall for a zero-carbon building according to an embodiment of the present application, connecting columns are provided on both the first slider and the second slider, and telescopic hinge assemblies are provided on the left side of the first photovoltaic panel and the right side of the second photovoltaic panel. One end of the first connecting rod is rotatably connected to the first slider through one of the connecting columns, and the other end is rotatably connected to the first photovoltaic panel through one of the telescopic hinge assemblies. One end of the second connecting rod is rotatably connected to the second slider through the other connecting column, and the other end is rotatably connected to the second photovoltaic panel through the other telescopic hinge assembly.

[0018] In an adjustable photovoltaic curtain wall for a zero-carbon building according to an embodiment of the present application, the telescopic hinge assembly includes a first connecting block, a second connecting block, an adjusting block, and a hinge plate;

[0019] The two first connecting blocks are respectively connected to the first photovoltaic panel and the second photovoltaic panel. The second connecting block is slidably sleeved inside the first connecting block. The adjusting block is rotatably connected to one end of the second connecting block away from the first connecting block. The hinge plate is vertically provided at one end of the adjusting block away from the second connecting block. The two hinge plates are respectively rotatably connected to the first connecting rod and the second connecting rod through pin shafts.

[0020] In an adjustable photovoltaic curtain wall for a zero-carbon building according to an embodiment of the present application, a limiting protrusion is provided on the connecting column, and the limiting protrusion is used to prevent the first connecting rod and the second connecting rod from falling off.

[0021] In an adjustable photovoltaic curtain wall for a zero-carbon building according to an embodiment of the present application, it further includes a wire reel, a pulling wire, a driving motor, and a plurality of lifting rods;

[0022] The wire take-up reel is arranged at the top of the outer frame. The driving motor is in transmission connection with the wire take-up reel and is used to drive the wire take-up reel to rotate. The pulling steel wire is wound around the wire take-up reel. One end of the pulling steel wire is fixedly connected to the wire take-up reel, and a plurality of hinge columns are arranged at intervals at the other end. One end of the lifting rod is fixedly connected to the rotating shaft, and a long strip-shaped waist hole is arranged at the other end. The lifting rod is hinged to the hinge column through the long strip-shaped waist hole, and the plurality of lifting rods correspond to the plurality of hinge columns one by one.

[0023] In an adjustable photovoltaic curtain wall of a zero-carbon building according to an embodiment of the present application, a plurality of wire-passing plates are arranged on the outer frame. The plurality of wire-passing plates are arranged on the outer frame at intervals in the vertical direction. A wire-passing hole is formed in the wire-passing plate, and the pulling steel wire penetrates through the plurality of wire-passing holes. The wire-passing plate is used to limit the pulling steel wire.

[0024] In an adjustable photovoltaic curtain wall of a zero-carbon building according to an embodiment of the present application, a limiting block is arranged at the bottom end of each lifting rod. The limiting block is used to limit the downward rotation of one end of the lifting rod close to the hinge column.

[0025] Compared with the prior art, the embodiment of the present application has the following beneficial effects:

[0026] As can be seen from the above technical solutions, a zero-carbon building adjustable photovoltaic curtain wall provided by an embodiment of the present application includes an outer frame disposed on the outer facade of a building. Transparent support plates are provided on both sides of the outer frame, and a number of passive light-tracking photovoltaic modules are installed vertically through the transparent support plates. When the sun shines from the left, the first SMA spring group absorbs heat and deforms, pushing the first slider upward. The first slider pushes the left side of the first photovoltaic panel towards the inside of the photovoltaic frame through the first connecting rod, causing the first photovoltaic panel to face the left as a whole to receive more sunlight. When the sun shines from the right, the second SMA spring group absorbs heat and deforms, pushing the second slider upward. The second slider pushes the right side of the second photovoltaic panel towards the inside of the photovoltaic frame through the second connecting rod, causing the second photovoltaic panel to face the right as a whole to receive more sunlight. When the sunlight does not shine on the first SMA spring group and / or the second SMA spring group, the first SMA spring group and / or the second SMA spring group dissipate heat and cool down. At the same time, convective heat dissipation is achieved for the first SMA spring group and / or the second SMA spring group through the installation through slots, further accelerating the cooling rate of the first SMA spring group and / or the second SMA spring group, causing the first SMA spring group and / or the second SMA spring group to recover their deformation, driving the first photovoltaic panel and / or the second photovoltaic panel to reset, solving the problem that in the prior art, photovoltaic panels are usually actively driven to rotate by devices such as motors, hydraulic cylinders, air pumps, and electric push rods. However, driving devices such as motors, hydraulic cylinders, air cylinders, and electric push rods not only consume electrical energy and reduce the net power generation of the photovoltaic curtain wall, but also when there are more photovoltaic panels, the required driving devices will increase accordingly, thereby increasing the installation cost, and also resulting in high complexity in installation, maintenance, and replacement, and high labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. The drawings are not intended to be drawn to scale, and for clarity, not every component will be labeled in each figure. The following drawings are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative efforts. Among them:

[0028] Figure 1 is a schematic structural diagram of an embodiment of the present application.

[0029] Figure 2 is Figure 1 a partial enlarged schematic diagram of A in

[0030] Figure 3 is a schematic structural diagram of a passive light-tracking photovoltaic module in an embodiment of the present application.

[0031] Figure 4 is a cross-sectional view of a photovoltaic frame in an embodiment of the present application.

[0032] Figure 5 is Figure 4 A partial enlarged schematic view of part B in it.

[0033] Figure 6 is Figure 4 A partial enlarged schematic view of part C in it.

[0034] Figure 7 It is a top view of the installation through - slot in the embodiment of the present application.

[0035] Figure 8 It is a structural schematic view of the telescopic hinge assembly in the embodiment of the present application.

[0036] Explanation of reference numerals:

[0037] 1 - Outer frame, 2 - Passive light - chasing photovoltaic module, 3 - Photovoltaic frame, 4 - First photovoltaic panel, 5 - Second photovoltaic panel, 6 - First rotating shaft, 7 - Second rotating shaft, 8 - First connecting rod, 9 - Second connecting rod, 10 - First slider, 11 - Second slider, 12 - Rotating shaft, 13 - First through - slot, 14 - Second through - slot, 15 - Limit sliding groove, 16 - Lower SMA spring, 17 - Upper SMA spring, 18 - Connecting plate, 19 - Connecting column, 20 - First connecting block, 21 - Second connecting block, 22 - Adjusting block, 23 - Hinge plate, 24 - Limit projection, 25 - Wire - winding disc, 26 - Pulling wire, 27 - Driving motor, 28 - Lifting rod, 29 - Hinge column, 30 - Wire - passing plate, 31 - Limit block. Detailed implementation manners

[0038] Currently, in order to make full use of solar energy, the photovoltaic panels of a photovoltaic curtain wall will rotate as the irradiation angle of sunlight changes during a day. However, in the prior art, the photovoltaic panels are usually actively driven to rotate by devices such as motors, hydraulic cylinders, air pumps, and electric push - pull rods. These driving devices such as motors, hydraulic cylinders, air cylinders, and electric push - pull rods not only consume electric energy, reducing the net power generation of the photovoltaic curtain wall, but also when there are more photovoltaic panels, the required driving devices will increase accordingly, thereby increasing the installation cost. Moreover, it will also lead to high complexity in installation, maintenance, and replacement, and high labor intensity.

[0039] In view of this, an adjustable photovoltaic curtain wall for zero-carbon buildings is provided in an embodiment of the present application. By setting an outer frame on the building facade, transparent support plates are arranged on both sides of the outer frame, and a number of passive solar-tracking photovoltaic modules are installed vertically along the transparent support plates. When the sun shines from the left, the first SMA spring group absorbs heat and deforms, pushing the first slider upward. The first slider pushes the left side of the first photovoltaic panel towards the inner side of the photovoltaic frame through the first connecting rod, so that the first photovoltaic panel faces the left as a whole to receive more sunlight. When the sun shines from the right, the second SMA spring group absorbs heat and deforms, pushing the second slider upward. The second slider pushes the right side of the second photovoltaic panel towards the inner side of the photovoltaic frame through the second connecting rod, so that the second photovoltaic panel faces the right as a whole to receive more sunlight. When the sunlight does not shine on the first SMA spring group and / or the second SMA spring group, the first SMA spring group and / or the second SMA spring group dissipate heat and cool down. At the same time, convective heat dissipation is realized for the first SMA spring group and / or the second SMA spring group through the installation through slots, further accelerating the cooling rate of the first SMA spring group and / or the second SMA spring group, enabling the first SMA spring group and / or the second SMA spring group to recover deformation, and driving the first photovoltaic panel and / or the second photovoltaic panel to reset, which solves the problem that in the prior art, photovoltaic panels are usually actively driven to rotate by devices such as motors, hydraulic cylinders, air pumps, and electric push-pull rods. However, driving devices such as motors, hydraulic cylinders, air cylinders, and electric push-pull rods not only consume electrical energy and reduce the net power generation of the photovoltaic curtain wall, but also when there are more photovoltaic panels, the required driving devices will also increase accordingly, thereby increasing the installation cost, and also resulting in high complexity in installation, maintenance, and replacement, and high labor intensity.

[0040] Next, the technical solutions in the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present application.

[0041] In the description of the present 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", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0042] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected" and "coupled" shall be construed broadly. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection, an electrical connection or a connection capable of mutual communication; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0043] In the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0044] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0045] An embodiment of the present application provides an adjustable photovoltaic curtain wall for a zero-carbon building, as Figures 1 to 8 shown. An adjustable photovoltaic curtain wall for a zero-carbon building includes an outer frame 1, a transparent support plate, a plurality of passive solar tracking photovoltaic modules 2, a wire reel 25, a pulling wire 26, a driving motor 27, and a plurality of lifting rods 28.

[0046] Among them, the outer frame 1 is installed on the outer facade of the building. It has a cuboid structure, and each face is a hollow structure, that is, each face is ventilable.

[0047] A transparent support plate is installed on each of the left and right sides of the outer frame 1. A plurality of passive light-tracking photovoltaic modules 2 are uniformly arranged in the outer frame 1 along the vertical direction of the outer frame 1. The passive light-tracking photovoltaic module 2 includes a photovoltaic frame 3, a first photovoltaic panel 4, a second photovoltaic panel 5, a first rotating shaft 6, a second rotating shaft 7, a first SMA spring group, a second SMA spring group, a first connecting rod 8, a second connecting rod 9, a first slider 10, and a second slider 11. Rotating shafts 12 and installation through grooves are provided on both horizontal sides of the photovoltaic frame 3. The two rotating shafts 12 are respectively rotationally connected to the two transparent support plates. The first rotating shaft 6 and the second rotating shaft 7 are spaced apart and arranged in the middle of the photovoltaic frame 3. Their respective two ends are respectively rotationally connected to the top and bottom of the photovoltaic frame 3, and the first rotating shaft 6 is located on the left side of the second rotating shaft 7. The right side of the first photovoltaic panel 4 is connected to the first rotating shaft 6, and its left side is rotationally connected to the first connecting rod 8. The other end of the first connecting rod 8 is rotationally connected to the first slider 10. The first slider 10 is connected to the first SMA spring group. The left side of the second photovoltaic panel 5 is connected to the second rotating shaft 7, and its right side is rotationally connected to the second connecting rod 9. The other end of the second connecting rod 9 is rotationally connected to the second slider 11. The second slider 11 is connected to the second SMA spring group. The first SMA spring group and the second SMA spring group are respectively vertically arranged in the two installation through grooves. The side of the first SMA spring group away from the first photovoltaic panel 4 and the side of the second SMA spring group away from the second photovoltaic panel 5 are respectively flush with the left and right outer side surfaces of the photovoltaic frame 3. The wire reel 25 is arranged at the top of the outer frame 1. The driving motor 27 is in transmission connection with the wire reel 25 and is used to drive the wire reel 25 to rotate. The pulling steel wire 26 is wound around the wire reel 25. One end of it is fixedly connected to the wire reel 25, and a plurality of hinge columns 29 are arranged at intervals at the other end. One end of the lifting rod 28 is fixedly connected to the rotating shaft 12, and a long strip-shaped waist hole is provided at the other end. The lifting rod 28 is hinged to the hinge column 29 through the long strip-shaped waist hole. The plurality of lifting rods 28 and the plurality of hinge columns 29 correspond one by one.

[0048] Specifically, an aerogel heat insulation sheet is provided on the groove wall of the installation through groove. The installation through groove includes a first through groove 13 and a second through groove 14 which are coaxially arranged. The first through groove 13 is located below the second through groove 14. The second through groove 14 is provided with a limiting sliding groove 15. Both the first SMA spring group and the second SMA spring group include a lower SMA spring 16, an upper SMA spring 17 and a connecting plate 18. The lower SMA spring 16 is located in the first through groove 13, its bottom end is connected to the photovoltaic frame 3, and its top end is connected to the connecting plate 18. The connecting plate 18 is slidably connected to the limiting sliding groove 15. The upper SMA spring 17 is located in the second through groove 14, its bottom end is connected to the connecting plate 18, and its top end is connected to the first slider 10 and the second slider 11. The length of the first through groove 13 is equal to the length of the lower SMA spring 16 at normal temperature. The length of the second through groove 14 is equal to the sum of the length of the upper SMA spring 17 at normal temperature and the thickness of the connecting plate 18. When both the lower SMA spring 16 and the upper SMA spring 17 are in the normal temperature state, the first slider 10 and the second slider 11 are supported on the top of the second through groove 14. Heat absorption coatings are provided on one side of the lower SMA spring 16 flush with the outer side of the photovoltaic frame 3 and one side of the upper SMA spring 17 flush with the outer side of the photovoltaic frame 3. Reflective silver films are provided on one side of the lower SMA spring 16 away from the outer side of the photovoltaic frame 3 and one side of the upper SMA spring 17 away from the outer side of the photovoltaic frame 3. Connecting columns 19 are provided on both the first slider 10 and the second slider 11. Telescopic hinge assemblies are provided on the left side of the first photovoltaic panel 4 and the right side of the second photovoltaic panel 5. One end of the first connecting rod 8 is rotatably connected to the first slider 10 through one of the connecting columns 19, and the other end is rotatably connected to the first photovoltaic panel 4 through one of the telescopic hinge assemblies. One end of the second connecting rod 9 is rotatably connected to the second slider 11 through the other connecting column 19, and the other end is rotatably connected to the second photovoltaic panel 5 through the other telescopic hinge assembly. Preferably, a limiting protrusion 24 is provided on the connecting column 19, and the limiting protrusion 24 is used to prevent the first connecting rod 8 and the second connecting rod 9 from falling off. The telescopic hinge assembly includes a first connecting block 20, a second connecting block 21, an adjusting block 22 and a hinge plate 23. The two first connecting blocks 20 are respectively connected to the first photovoltaic panel 4 and the second photovoltaic panel 5. The second connecting block 21 is slidably sleeved in the first connecting block 20. The adjusting block 22 is rotatably connected to one end of the second connecting block 21 away from the first connecting block 20. The hinge plate 23 is vertically provided at one end of the adjusting block 22 away from the second connecting block 21. The two hinge plates 23 are respectively rotatably connected to the first connecting rod 8 and the second connecting rod 9 through pin shafts.

[0049] Among them, the transparent support plate is made of transparent polycarbonate. The distance between two adjacent passive light-tracking photovoltaic modules 2 should be as close as possible without affecting their rotation around the rotating shaft 12. When the first photovoltaic panel 4 or the second photovoltaic panel 5 rotates inward towards the inside of the photovoltaic frame 3, to prevent the photovoltaic frame 3 from blocking part of the sunlight, the photovoltaic frame 3 is made of transparent polycarbonate. The distance between the first rotating shaft 6 and the second rotating shaft 7 should be as close as possible without affecting the other photovoltaic panel when the first photovoltaic panel 4 or the second photovoltaic panel 5 rotates. The first slider 10 is slidably arranged in a first chute opened on the left side of the photovoltaic frame 3. The first chute communicates with a second through groove 14 on the left side of the photovoltaic frame 3, and the bottom of the first chute and the top of the second through groove 14 are on the same plane. The second slider 11 is slidably arranged in a second chute opened on the right side of the photovoltaic frame 3. The second chute communicates with the second through groove 14 on the right side of the photovoltaic frame 3, and the bottom of the second chute and the top of the second through groove 14 are on the same plane. By setting the length of the first through groove 13 to be equal to the length of the lower SMA spring 16 at normal temperature, when the lower SMA spring 16 is in the normal temperature state, the connecting plate 18 is supported at the bottom end of the limiting chute 15 and does not compress the lower SMA spring 16. The length of the second through groove 14 is equal to the sum of the length of the upper SMA spring 17 at normal temperature and the thickness of the connecting plate 18. When both the lower SMA spring 16 and the upper SMA spring 17 are in the normal temperature state, the first slider 10 and the second slider 11 are supported at the top of the second through groove 14 and do not compress the upper SMA spring 17, so that when the lower SMA spring 16 and the upper SMA spring 17 are in the normal temperature state, neither of them is subjected to a downward pressure, ensuring the consistency of the lower SMA spring 16 and the upper SMA spring 17 at the initial stage to strengthen the synchronization of the heat absorption deformation of the lower SMA spring 16 and the upper SMA spring 17. Both the lower SMA spring 16 and the upper SMA spring 17 are nickel-titanium alloy springs that have been pre-trained thermomechanically to achieve two-way deformation. One end of the second connecting block 21 located inside the first connecting block 20 is provided with a sliding protrusion, and a sliding groove is provided inside the first connecting block 20. The sliding protrusion and the sliding groove are slidably connected, and the sliding groove does not extend to the opening of the first connecting block 20 to prevent the second connecting block 21 from slipping out of the first connecting block 20. By setting an aerogel heat-insulating sheet on the groove wall of the installation through groove, the photovoltaic frame 3 is prevented from guiding heat to the lower SMA spring 16 and the upper SMA spring 17, so that when the lower SMA spring 16 and the upper SMA spring 17 are not irradiated by the sun, they are not mis-triggered to deform due to the heat of the photovoltaic frame 3.On one side of the lower SMA spring 16 flush with the outer side of the photovoltaic frame 3 and one side of the upper SMA spring 17 flush with the outer side of the photovoltaic frame 3, heat-absorbing coatings are provided. On the side of the lower SMA spring 16 away from the outer side of the photovoltaic frame 3 and the side of the upper SMA spring 17 away from the outer side of the photovoltaic frame 3, reflective silver films are provided, so that as much as possible, the side of the lower SMA spring 16 and the upper SMA spring 17 facing the outside of the photovoltaic frame 3 absorbs heat, and the side facing the inside of the photovoltaic frame 3 reduces the influence of environmental heat radiation through the reflective silver film, preventing deformation mis-triggering. Since the recoverable deformation range of the SMA spring is 5%-8% and the deformation amount is small, by setting the lower SMA spring 16, the connecting plate 18 and the upper SMA spring 17, the lower SMA spring 16 and the upper SMA spring 17 are coaxially "connected in series" to expand the displacement of the first slider 10 / second slider 11 and increase the rotation angle of the first photovoltaic panel 4 / second photovoltaic panel 5. By setting the drive motor 27, the wire reel 25, the pulling wire 26 and a plurality of lifting rods 28, the drive motor 27 drives the wire reel 25 to rotate, pulling up the pulling wire 26. The pulling wire 26 moves upward, and a plurality of the passive light-tracking photovoltaic modules 2 are synchronously driven to rotate upward by a plurality of the lifting rods 28, realizing synchronous change of the elevation angles of a plurality of the passive light-tracking photovoltaic modules 2. Preferably, an angle sensor can also be provided on the output shaft of the drive motor 27 to obtain the rotation angle of the output shaft of the drive motor 27, so as to calculate the lifting height of the pulling wire 26, and further calculate the change amount of the elevation angle of the passive light-tracking photovoltaic module 2. A ring-shaped protrusion is provided at one end of the hinge column 29 away from the pulling wire 26 to prevent the lifting rod 28 from falling off.,

[0050] In some preferred embodiments, a plurality of wire-passing plates 30 are provided on the outer frame 1. The plurality of wire-passing plates 30 are arranged on the outer frame 1 at intervals in the vertical direction. A wire-passing hole is provided on the wire-passing plate 30. The pulling wire 26 passes through a plurality of the wire-passing holes. The wire-passing plate 30 is used to limit the pulling wire 26 to prevent the pulling wire 26 from shaking.

[0051] In some preferred embodiments, a limiting block 31 is provided at the bottom end of each lifting rod 28. The limiting block 31 is used to limit the downward rotation of one end of the lifting rod 28 close to the hinge column 29.

[0052] In summary, a zero-carbon building adjustable photovoltaic curtain wall provided by an embodiment of the present application has an outer frame disposed on the building facade, with transparent support plates provided on both sides of the outer frame, and a number of passive solar tracking photovoltaic modules are installed vertically along the transparent support plates. When the sun shines from the left, the first SMA spring group absorbs heat and deforms, pushing the first slider upward. The first slider pushes the left side of the first photovoltaic panel toward the inside of the photovoltaic frame through the first connecting rod, causing the first photovoltaic panel to face the left as a whole to receive more sunlight. When the sun shines from the right, the second SMA spring group absorbs heat and deforms, pushing the second slider upward. The second slider pushes the right side of the second photovoltaic panel toward the inside of the photovoltaic frame through the second connecting rod, causing the second photovoltaic panel to face the right as a whole to receive more sunlight. When the sunlight does not shine on the first SMA spring group and / or the second SMA spring group, the first SMA spring group and / or the second SMA spring group dissipate heat and cool down. At the same time, convective heat dissipation is achieved for the first SMA spring group and / or the second SMA spring group through the installation through slots, further accelerating the cooling rate of the first SMA spring group and / or the second SMA spring group, causing the first SMA spring group and / or the second SMA spring group to recover deformation and driving the first photovoltaic panel and / or the second photovoltaic panel to reset, solving the problem that in the prior art, photovoltaic panels are usually actively driven to rotate by devices such as motors, hydraulic cylinders, air pumps, and electric push rods. These driving devices such as motors, hydraulic cylinders, air cylinders, and electric push rods not only consume electrical energy, reducing the net power generation of the photovoltaic curtain wall, but also when there are more photovoltaic panels, the required driving devices will increase accordingly, thereby increasing the installation cost, and also resulting in high complexity in installation, maintenance, and replacement, as well as high labor intensity.

[0053] The above has introduced in detail a zero-carbon building adjustable photovoltaic curtain wall provided by an embodiment of the present application. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of the present application; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform 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. An adjustable photovoltaic curtain wall for zero-carbon buildings, characterized in that, It includes an outer frame, a transparent support plate, and several passive solar-tracking photovoltaic modules; One of the transparent support plates is installed on each side of the outer frame; Several of the passive solar-tracking photovoltaic modules are evenly arranged in the outer frame along the vertical direction of the outer frame. The passive solar-tracking photovoltaic module includes a photovoltaic frame, a first photovoltaic panel, a second photovoltaic panel, a first rotating shaft, a second rotating shaft, a first SMA spring group, a second SMA spring group, a first connecting rod, a second connecting rod, a first slider, and a second slider; Rotating shafts and installation through grooves are provided on both horizontal sides of the photovoltaic frame. The two rotating shafts are respectively rotatably connected to the two transparent support plates. The installation through groove includes a first through groove and a second through groove arranged coaxially. The first through groove is located below the second through groove. The second through groove is provided with a limiting sliding groove. The first SMA spring group and the second SMA spring group both include a lower SMA spring, an upper SMA spring, and a connecting plate. The side of the lower SMA spring flush with the outer side surface of the photovoltaic frame and the side of the upper SMA spring flush with the outer side surface of the photovoltaic frame are both provided with heat-absorbing coatings. The side of the lower SMA spring away from the outer side surface of the photovoltaic frame and the side of the upper SMA spring away from the outer side surface of the photovoltaic frame are both provided with reflective silver films; The first rotating shaft and the second rotating shaft are spaced apart in the middle of the photovoltaic frame, and both ends of each of them are respectively rotatably connected to the top and bottom of the photovoltaic frame, and the first rotating shaft is located on the left side of the second rotating shaft; The right side of the first photovoltaic panel is connected to the first rotating shaft, its left side is rotatably connected to the first connecting rod, the other end of the first connecting rod is rotatably connected to the first slider, the first slider is connected to the first SMA spring group, the left side of the second photovoltaic panel is connected to the second rotating shaft, its right side is rotatably connected to the second connecting rod, the other end of the second connecting rod is rotatably connected to the second slider, the second slider is connected to the second SMA spring group. The first SMA spring group and the second SMA spring group are respectively vertically arranged in the two installation through grooves. The side of the first SMA spring group away from the first photovoltaic panel and the side of the second SMA spring group away from the second photovoltaic panel are respectively flush with the left and right outer side surfaces of the photovoltaic frame.

2. The adjustable photovoltaic curtain wall for zero-carbon building according to claim 1, wherein The lower SMA spring is located in the first through groove, its bottom end is connected to the photovoltaic frame, and its top end is connected to the connecting plate. The connecting plate is slidably connected to the limiting sliding groove. The upper SMA spring is located in the second through groove, its bottom end is connected to the connecting plate, and its top end is connected to the first slider and the second slider. The length of the first through groove is equal to the length of the lower SMA spring at normal temperature. The length of the second through groove is equal to the sum of the length of the upper SMA spring at normal temperature and the thickness of the connecting plate. When both the lower SMA spring and the upper SMA spring are in the normal temperature state, the first slider and the second slider are supported on the top of the second through groove.

3. The adjustable photovoltaic curtain wall for zero-carbon buildings according to claim 1, characterized in that, Aerogel heat-insulating sheets are provided on the groove walls of the installation through groove.

4. The adjustable photovoltaic curtain wall for zero-carbon buildings according to claim 1, characterized in that, The first slider and the second slider are both provided with connecting columns. Telescopic hinge assemblies are provided on the left side of the first photovoltaic panel and the right side of the second photovoltaic panel. One end of the first connecting rod is rotatably connected to the first slider through one of the connecting columns, and the other end is rotatably connected to the first photovoltaic panel through one of the telescopic hinge assemblies. One end of the second connecting rod is rotatably connected to the second slider through the other connecting column, and the other end is rotatably connected to the second photovoltaic panel through the other telescopic hinge assembly.

5. The adjustable photovoltaic curtain wall for zero-carbon building according to claim 4, characterized in that, The telescopic hinge assembly includes a first connecting block, a second connecting block, an adjusting block and a hinge plate; The two first connecting blocks are respectively connected to the first photovoltaic panel and the second photovoltaic panel. The second connecting block is slidably sleeved in the first connecting block. The adjusting block is rotatably connected to one end of the second connecting block away from the first connecting block. The hinge plate is vertically arranged at one end of the adjusting block away from the second connecting block. The two hinge plates are respectively rotatably connected to the first connecting rod and the second connecting rod through pins.

6. The adjustable photovoltaic curtain wall for zero-carbon building according to claim 4, characterized in that, A limiting protrusion is provided on the connecting column, and the limiting protrusion is used to prevent the first connecting rod and the second connecting rod from falling off.

7. The adjustable photovoltaic curtain wall for zero-carbon buildings according to claim 1, wherein It further includes a wire winding disc, a pulling steel wire, a driving motor and a plurality of lifting rods; The wire winding disc is arranged at the top of the outer frame. The driving motor is in transmission connection with the wire winding disc and is used to drive the wire winding disc to rotate. The pulling steel wire is wound around the wire winding disc. One end of the pulling steel wire is fixedly connected to the wire winding disc, and a plurality of hinge columns are arranged at intervals at the other end. One end of the lifting rod is fixedly connected to the rotating shaft, and a long strip waist hole is arranged at the other end. The lifting rod is hinged to the hinge column through the long strip waist hole, and the plurality of lifting rods correspond to the plurality of hinge columns one by one.

8. The adjustable photovoltaic curtain wall for zero-carbon building according to claim 7, wherein, A plurality of wire threading plates are arranged on the outer frame. The plurality of wire threading plates are arranged on the outer frame at intervals in the vertical direction. A wire threading hole is opened on the wire threading plate. The pulling steel wire penetrates through the plurality of wire threading holes, and the wire threading plate is used to limit the pulling steel wire.

9. The adjustable photovoltaic curtain wall for zero-carbon building according to claim 7, characterized in that, A limiting block is arranged at the bottom end of each lifting rod, and the limiting block is used to limit the downward rotation of the end of the lifting rod close to the hinge column.

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