CN111313806A - Photovoltaic installation and building with the same - Google Patents

Abstract

The invention discloses a photovoltaic device and a building with the same. The photovoltaic device includes: a frame adapted to be rotatably disposed; the photovoltaic assembly is arranged on the frame; an LED assembly disposed on the frame; and the driving piece is connected with the frame so as to drive the frame to rotate, wherein the photovoltaic assembly is positioned on a first side of the rotation axis of the frame, the LED assembly is positioned on a second side of the rotation axis of the frame, and the first side and the second side are opposite in a first preset direction. The photovoltaic device provided by the embodiment of the invention has the advantages of multiple functions and the like, and by utilizing the photovoltaic device, exterior materials of buildings can be saved, and the energy consumption of the buildings can be reduced.

Description

Photovoltaic installation and building with the same

technical field

The present invention relates to a photovoltaic device, and also to a building having the photovoltaic device.

Background technique

The application forms of photovoltaic building integration are mainly divided into three categories: lighting roof application, curtain wall application and shading application. For photovoltaic shading applications, the existing technology only simply combines crystalline silicon photovoltaic panels with buildings and has a single function.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a photovoltaic device and a building having the photovoltaic device in order to overcome the problems existing in the prior art.

In order to achieve the above object, a first aspect of the present invention provides a photovoltaic device, the photovoltaic device includes: a frame, the frame is adapted to be rotatably disposed; a photovoltaic assembly, the photovoltaic assembly is disposed on the frame; an LED assembly , the LED assembly is provided on the frame; and a driving member is connected with the frame to drive the frame to rotate, wherein the photovoltaic assembly is located on the first side of the rotation axis of the frame, so The LED assembly is located on a second side of the rotation axis of the frame, and the first side is opposite to the second side in a first predetermined direction.

The photovoltaic device according to the embodiment of the present invention has the advantages of various functions. By using the photovoltaic device, the exterior decoration materials of the building can be saved, the energy consumption of the building can be reduced, and the building can be brightened and beautified at night.

Preferably, the photovoltaic module includes: a first substrate, the first substrate has a first surface and a second surface opposite in the first predetermined direction; a CIGS film layer, the CIGS film layer is provided on the on one of the first surface and the second surface, wherein the first substrate is located between the CIGS film layer and the LED assembly in the first predetermined direction; a first adhesive layer and a second adhesive layer, the first adhesive layer is provided on the CIGS film layer, the second adhesive layer is provided on the other of the first surface and the second surface; and a first glass plate and a second glass plate, the first glass plate is provided on the first adhesive layer, and the second glass plate is provided on the second adhesive layer.

Preferably, the LED assembly includes: a second substrate; and a plurality of LED lamps, and the plurality of LED lamps are provided on the second substrate.

Preferably, the frame includes a first frame and a second frame, the first frame and the second frame are spaced apart along a second predetermined direction, and the first predetermined direction is perpendicular to the second frame A preset direction, wherein the first end of the photovoltaic component is set on the first frame, the first end of the LED component is set on the first frame, and the second end of the photovoltaic component is set on the first frame. is arranged on the second frame, and the second end of the LED component is arranged on the second frame.

Preferably, the first frame has a first slot and a second slot, the second frame has a third slot and a fourth slot, wherein the first end of the photovoltaic module is engaged with the In the first slot, the first end of the LED assembly is engaged in the second slot, the second end of the photovoltaic module is engaged in the third slot, and the LED assembly is engaged in the second slot. The second end of the card is engaged in the fourth card slot.

Preferably, the photovoltaic device further comprises: a first embedded part and a second embedded part, the first embedded part and the second embedded part are spaced apart along the second preset direction, Each of the first embedded part and the second embedded part is suitable for being provided in the decorative surface layer of the building; a first rotating shaft, the first rotating shaft is rotatably provided in the first On the embedded part, the first rotating shaft is connected with the first frame; and a second rotating shaft, the second rotating shaft is rotatably arranged on the second embedded part, and the second rotating shaft is connected with the The second frame is connected, wherein the driving member is connected with at least one of the first rotating shaft and the second rotating shaft.

Preferably, the photovoltaic device further comprises an electric mortise lock movably provided on the frame between a disengaged position disengaged from the lock hole and a locked position adapted to fit within the lock hole.

A second aspect of the present invention provides a building, the building includes: a body; and a photovoltaic device, the photovoltaic device includes: a frame, the frame is rotatably provided on the body; a photovoltaic assembly, the photovoltaic assembly is provided on the frame; an LED assembly provided on the frame; and a driver connected with the frame to drive the frame to rotate, wherein the photovoltaic assembly is located on the frame The first side of the rotation axis, the LED assembly is located on the second side of the rotation axis of the frame, the first side and the second side are opposite in a first predetermined direction.

Preferably, the body comprises: a main body; and a first decorative surface layer and a second decorative surface layer, the first decorative surface layer and the second decorative surface layer are provided on the On the main body, the first predetermined direction is perpendicular to the second predetermined direction, the frame includes a first frame and a second frame, and the first frame and the second frame are along the second predetermined direction. The installation directions are spaced apart, the first end of the photovoltaic assembly is disposed on the first frame, the first end of the LED assembly is disposed on the first frame, and the second end of the photovoltaic assembly is disposed on the first frame. The end is set on the second frame, the second end of the LED assembly is set on the second frame, wherein the photovoltaic device further comprises: a first embedded part and a second embedded part, the The first embedded part and the second embedded part are spaced apart along the second preset direction, the first embedded part is set in the first decorative surface layer, and the second embedded part is an embedded part is arranged in the second decorative surface layer; a first rotating shaft, the first rotating shaft is rotatably arranged on the first embedded part, and the first rotating shaft is connected with the first frame; and A second rotating shaft, the second rotating shaft is rotatably arranged on the second embedded part, and the second rotating shaft is connected with the second frame.

Preferably, at least one of the first decorative surface layer and the second decorative surface layer is provided with a lock hole, the photovoltaic device further includes an electric mortise lock, and the electric mortise lock is in a disengaged position and a locked position It is movably arranged on the frame, wherein the electric mortise lock in the disengaged position is disengaged from the lock hole, and the electric mortise lock in the lock position fits in the lock hole, preferably There are multiple lock holes, the lock holes are located on a first circumference, the center of the first circumference is located on the rotation axis of the frame, and the electric mortise lock located at the locked position Fitted in one of the plurality of lock holes.

Description of drawings

FIG. 1 is a schematic structural diagram of a photovoltaic device according to an embodiment of the present invention;

2 is a schematic structural diagram of a photovoltaic assembly of a photovoltaic device according to an embodiment of the present invention;

3 is a schematic diagram of a partial structure of a photovoltaic device according to an embodiment of the present invention.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention, but should not be construed as a limitation of the present invention.

A building according to an embodiment of the present invention is described below with reference to the accompanying drawings. A building according to an embodiment of the present invention includes a body and a photovoltaic device 1 .

As shown in FIGS. 1-3 , a photovoltaic device 1 according to an embodiment of the present invention includes a frame 10 , a photovoltaic assembly 20 , an LED assembly 30 and a driving member (not shown in the drawings).

The frame 10 is rotatably provided on the body. The photovoltaic assembly 20 is provided on the frame 10 , and the LED assembly 30 is provided on the frame 10 . The driver is connected to the frame 10 to drive the frame 10 to rotate. The photovoltaic assembly 20 is located on the first side of the rotation axis of the frame 10 , and the LED assembly 30 is located on the second side of the rotation axis of the frame 10 , and the first side is opposite to the second side in a first predetermined direction.

During the daytime, the photovoltaic assembly 20 can be made to face the sun so that sunlight is irradiated on the photovoltaic assembly 20, whereby the photovoltaic assembly 20 can be used to generate electricity. During the day, the first side may be the south side and the second side may be the north side.

Since the photovoltaic assembly 20 and the LED assembly 30 are located on opposite sides of the rotation axis of the frame 10, at night, the frame 10 can be rotated 90-270 degrees clockwise or counterclockwise, so as to use the LED assembly 30 to The building has a brightening effect. At night, the first side may be the north side and the second side may be the south side.

The photovoltaic device 1 according to the embodiment of the present invention can make the photovoltaic device 1 generate electricity during the day and light the building at night by arranging the photovoltaic components 20 and the LED components 30 on opposite sides of the rotation axis of the frame 10 .

Moreover, by arranging the photovoltaic device 1 on the building, not only the exterior decoration materials of the building can be saved, but also the energy consumption of the building can be reduced by generating electric energy.

Therefore, the photovoltaic device 1 according to the embodiment of the present invention has the advantages of various functions, etc. By using the photovoltaic device 1, the exterior decoration materials of the building can be saved, the energy consumption of the building can be reduced, and the building can be brightened and beautified at night.

The building according to the embodiment of the present invention has the advantages of disposing the photovoltaic device 1 without additionally disposing a lighting device, using less exterior decoration materials, and low energy consumption.

In some embodiments of the present invention, the body of the building according to the embodiment of the present invention includes a main body, a first decorative surface layer 2 and a second decorative surface layer 3, and the first decorative surface layer 2 and the second decorative surface layer 3 are along the The second predetermined direction is spaced apart on the main body, and the first predetermined direction is perpendicular to the second predetermined direction.

The first preset direction is shown by arrow A in FIG. 1 , and the second preset direction is shown by arrow B in FIG. 1 . For example, the first preset direction may be a north-south direction, and the second preset direction may be an up-down direction.

As shown in FIG. 1 , the frame 10 includes a first frame 110 and a second frame 120 , and the first frame 110 and the second frame 120 are spaced apart along the second predetermined direction. The first end of the photovoltaic assembly 20 is disposed on the first frame 110 , the first end of the LED assembly 30 is disposed on the first frame 110 , and the second end of the photovoltaic assembly 20 is disposed on the second frame 120 . The second end of the LED assembly 30 is disposed on the second frame 120 .

Preferably, the first frame 110 may be an aluminum alloy frame, and the second frame 120 may also be an aluminum alloy frame.

The first frame 110 has a first card slot and a second card slot, and the second frame 120 has a third card slot and a fourth card slot. The first end of the photovoltaic assembly 20 is engaged in the first slot, the first end of the LED assembly 30 is engaged in the second slot, and the second end of the photovoltaic assembly 20 is engaged in the second slot. In the third slot, the second end of the LED assembly 30 is engaged in the fourth slot.

As shown in FIG. 1 , in an embodiment of the present invention, the photovoltaic device 1 further includes a first embedded part 410 , a second embedded part 420 , a first rotating shaft 510 and a second rotating shaft 520 .

The first embedded part 410 and the second embedded part 420 are spaced apart along the second predetermined direction, the first embedded part 410 is set in the first decorative surface layer 2 , and the second embedded part 420 is set in the first decorative surface layer 2 . 2. Inside the decorative surface layer 3. Wherein, the first embedded part 410 (the second embedded part 420 ) is disposed in the first decorative surface layer 2 (the second decorative surface layer 3 ) including: a. the first embedded part 410 (the second embedded part 420 ) ) in the first decorative surface layer 2 (the second decorative surface layer 3); b. the first embedded part 410 (the second embedded part 420) is set in the first decorative surface layer 2 (the Between two decorative surface layers 3) and the main body; c. The first embedded part 410 (the second embedded part 420) is arranged in the main body.

By arranging the first embedded part 410 and the second embedded part 420 , the frame 10 can be installed more stably and easily. Preferably, the first embedded part 410 can be channel steel, and the second embedded part 420 can also be channel steel.

The first rotating shaft 510 is rotatably disposed on the first embedded part 410 , and the first rotating shaft 510 is connected with the first frame 110 . The second rotating shaft 520 is rotatably disposed on the second embedded part 420 , and the second rotating shaft 520 is connected with the second frame 120 . The driving member is connected to at least one of the first rotating shaft 510 and the second rotating shaft 520 , so that the driving member drives the frame 10 to rotate (rotate) through the at least one of the first rotating shaft 510 and the second rotating shaft 520 .

By rotating the frame 10, the photovoltaic assembly 20 can be made to track the sun's trajectory, so that the photovoltaic assembly 20 is always oriented to the direction where the maximum power generation can be obtained. Specifically, the rotation axis of the frame 10 , the rotation axis of the first rotation shaft 510 and the rotation axis of the second rotation shaft 520 may coincide with each other. It can be understood that, the first rotating shaft 510 and the second rotating shaft 520 may also be two ends of a single rotating shaft penetrating the upper and lower ends of the frame 10 .

In a specific example of the present invention, at least one of the first decorative surface layer 2 and the second decorative surface layer 3 is provided with a keyhole. The photovoltaic device 1 further comprises an electric mortise lock which is movably provided on the frame 10 between a disengaged position and a locked position. Wherein, the electric mortise lock in the disengaged position is disengaged from the lock hole, and the electric mortise lock in the lock position fits in the lock hole.

By arranging the electric mortise lock and the lock hole, after the frame 10 is rotated, the electric mortise lock fitted in the lock hole can be used to lock the frame 10, so as to prevent the frame 10 (photovoltaic device 1) from being affected by factors such as wind power Shake down, thereby improving the stability of the frame 10 (photovoltaic device 1 ).

Preferably, there are a plurality of the locking holes, the plurality of locking holes are located on a first circumference, and the center of the first circumference is located on the rotation axis of the frame 10 . Wherein, the electric mortise lock at the locking position is fitted in one of the plurality of locking holes. Thereby, the structure of the photovoltaic device 1 can be made more reasonable.

As shown in FIG. 2 , in some examples of the present invention, the photovoltaic assembly 20 includes a first substrate 210 , a CIGS film layer (not shown in the figure), a first adhesive layer 220 , a second adhesive layer 230 , a first Glass plate 240 and second glass plate 250 .

The first substrate 210 has a first surface and a second surface opposite in the first predetermined direction, the CIGS film layer is provided on one of the first surface and the second surface, and the first substrate 210 is on the first surface. The first predetermined direction is located between the CIGS film layer and the LED assembly 30 .

The first adhesive layer 220 is provided on the CIGS film layer, and the second adhesive layer 230 is provided on the other of the first surface and the second surface. The first glass plate 240 is provided on the first adhesive layer 220 , and the second glass plate 250 is provided on the second adhesive layer 230 . That is, along the direction away from the LED assembly 30, the second glass plate 250, the second adhesive layer 230, the first substrate 210, the CIGS film layer, the first adhesive layer 220 and the first glass plate are sequentially arranged 240.

By arranging the photovoltaic module 20 with the CIGS film layer, more green power can be generated by using the unique anti-shading technology of CIGS, so as to meet the needs of the building and greatly reduce the energy consumption of the building.

The direct current generated by the photovoltaic module 20 is converted into 0.4kV alternating current through the grid-connected inverter, and is connected to the electric control system through the grid-connected box to preferentially supply electricity to the photovoltaic device 1 and the building itself, and the excess power is input to the grid. When the electricity generated in cloudy and rainy days is not enough to provide building electricity, it will be supplemented by the public grid.

Preferably, both the first adhesive layer 220 and the second adhesive layer 230 may be made of PVB, and both the first glass plate 240 and the second glass plate 250 may be semi-toughened glass plates, which are used to ensure photovoltaic The assembly 20 meets the parameters or criteria required for use as a building material.

In a specific example of the present invention, the photovoltaic module 20 can be manufactured by the following method: cleaning a substrate glass (first substrate 210 ) with a thickness of 3 mm, and depositing a CIGS power generation layer on the substrate glass to form the CIGS film layer. A PVB film with a thickness of about 1mm is laid on the substrate glass and the CIGS film layer, and placed between two upper and lower semi-tempered glass substrates with a thickness of 5mm, and high temperature and vacuum are carried out in an autoclave or laminator. processing, so that the substrate glass coated with the CIGS film layer is integrated with the semi-tempered glass substrate, so as to obtain the photovoltaic module 20 .

Preferably, the CIGS film layer structure from bottom to top is: metal Mo back electrode, CIGS film layer, CdS buffer layer, and ZnO window layer.

As shown in FIGS. 1 and 3 , the LED assembly 30 includes a laminated tempered glass layer 310 and an LED lattice 320 . The LED dot matrix 320 is located between the photovoltaic module 20 and the laminated tempered glass layer 310 in the first predetermined direction. In this way, the laminated tempered glass layer 310 can be used to protect the LED dot matrix 320, so that damage to the LED dot matrix 320 can be avoided.

The LED lattice 320 may be spaced apart from the laminated tempered glass layer 310 , and the LED lattice 320 may also be in contact with the laminated tempered glass layer 310 . The first end of the laminated tempered glass layer 310 is engaged in the second slot, and the second end of the laminated tempered glass layer 310 is engaged in the fourth slot.

In a specific example of the present invention, the laminated tempered glass layer 310 can be manufactured by the following method: cleaning two pieces of tempered glass with a thickness of about 6 mm, laying a PVB film with a thickness of about 1 mm between the two pieces of tempered glass, In an autoclave or a laminator, high temperature and vacuum treatment are performed to combine the two pieces of tempered glass with the PVB film, so as to obtain the laminated tempered glass layer 310 .

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Rear, Left, Right, Vertical, Horizontal, Top, Bottom, Inner, Outer, Clockwise, Counterclockwise, Axial, The orientations or positional relationships indicated by "radial direction", "circumferential direction", etc. are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated devices or elements. It must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two components or the interaction relationship between the two components, unless otherwise expressly qualified. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may be in direct contact between the first and second features, or the first and second features indirectly through an intermediary touch. Also, the first feature being "above", "over" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine the different implementations or examples described in this specification and the features of the different implementations or examples without conflicting each other.

Although the embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Embodiments are subject to variations, modifications, substitutions and alterations.

Claims (10)

1. A photovoltaic device (1), characterized in that, comprising: a frame (10) adapted to be rotatably arranged; a photovoltaic assembly (20), the photovoltaic assembly (20) is provided on the frame (10); LED assembly (30) provided on said frame (10); and a driving member connected to the frame (10) for driving the frame (10) to rotate, wherein the photovoltaic assembly (20) is located on a first side of the rotation axis of the frame (10), the The LED assembly (30) is located on the second side of the rotation axis of the frame (10), the first side being opposite to the second side in a first predetermined direction. 2. The photovoltaic device (1) according to claim 1, wherein the photovoltaic assembly (20) comprises: a first substrate (210), the first substrate (210) having a first surface and a second surface opposite in the first predetermined direction; A CIGS film layer disposed on one of the first surface and the second surface, wherein the first substrate (210) is positioned on the CIGS in the first predetermined direction between the film layer and the LED assembly (30); A first adhesive layer (220) and a second adhesive layer (230), the first adhesive layer (220) is provided on the CIGS film layer, and the second adhesive layer (230) is provided on the on the other of the first surface and the second surface; and A first glass plate (240) and a second glass plate (250), the first glass plate (240) is provided on the first adhesive layer (220), and the second glass plate (250) is provided on the on the second adhesive layer (230). 3. The photovoltaic device (1) according to claim 2, wherein the LED assembly (30) comprises: a laminated tempered glass layer (310); and An LED dot matrix (320), the LED dot matrix (320) is located between the photovoltaic module (20) and the laminated tempered glass layer (310) in the first predetermined direction. 4. The photovoltaic device (1) according to claim 2, wherein the frame (10) comprises a first frame (110) and a second frame (120), the first frame (110) being connected to the The second frame (120) is spaced apart along a second preset direction, the first preset direction is perpendicular to the second preset direction, wherein the first end of the photovoltaic assembly (20) is provided at On the first frame (110), the first end of the LED component (30) is arranged on the first frame (110), and the second end of the photovoltaic module (20) is arranged on the first frame (110) On the second frame (120), the second end of the LED assembly (30) is arranged on the second frame (120). 5. The photovoltaic device (1) according to claim 4, wherein the first frame (110) has a first card slot and a second card slot, and the second frame (120) has a third card slot A slot and a fourth slot, wherein the first end of the photovoltaic assembly (20) is engaged in the first slot, and the first end of the LED assembly (30) is engaged in the second slot In the card slot, the second end of the photovoltaic assembly (20) is engaged in the third card slot, and the second end of the LED assembly (30) is engaged in the fourth card slot. 6. The photovoltaic device (1) according to claim 4, characterized in that, further comprising: a first embedded part (410) and a second embedded part (420), the first embedded part (410) and the second embedded part (420) being spaced apart along the second preset direction arranging, each of the first embedded part (410) and the second embedded part (420) is adapted to be disposed in the decorative surface of the building; A first rotating shaft (510), the first rotating shaft (510) is rotatably provided on the first embedded part (410), and the first rotating shaft (510) is connected with the first frame (110) ;and A second rotating shaft (520), the second rotating shaft (520) is rotatably provided on the second embedded part (420), and the second rotating shaft (520) is connected to the second frame (120) , wherein the driving member is connected with at least one of the first rotating shaft (510) and the second rotating shaft (520). 7. The photovoltaic device (1) according to any one of claims 1-6, further comprising an electric mortise lock, the electric mortise lock is in a disengaged position from the lock hole and is adapted to fit in the lock hole The frame (10) is movably provided between locking positions within. 8. A building, characterized in that it comprises: ontology; and A photovoltaic device (1), the photovoltaic device (1) comprising: a frame (10), the frame (10) being rotatably provided on the body; a photovoltaic assembly (20), the photovoltaic assembly (20) is provided on the frame (10); An LED assembly (30) provided on the frame (10); and a driving member connected to the frame (10) for driving the frame (10) to rotate, wherein the photovoltaic assembly (20) is located on a first side of the rotation axis of the frame (10), the The LED assembly (30) is located on the second side of the rotation axis of the frame (10), the first side being opposite to the second side in a first predetermined direction. 9. The building of claim 8, wherein: The body includes: subject; and A first decorative surface layer (2) and a second decorative surface layer (3), the first decorative surface layer (2) and the second decorative surface layer (3) are provided at intervals along the second preset direction. On the main body, the first preset direction is perpendicular to the second preset direction, The frame (10) includes a first frame (110) and a second frame (120), the first frame (110) and the second frame (120) being spaced apart along the second preset direction , the first end of the photovoltaic assembly (20) is set on the first frame (110), and the first end of the LED assembly (30) is set on the first frame (110), so The second end of the photovoltaic assembly (20) is set on the second frame (120), and the second end of the LED assembly (30) is set on the second frame (120), wherein the The photovoltaic device (1) further comprises: a first embedded part (410) and a second embedded part (420), the first embedded part (410) and the second embedded part (420) being spaced apart along the second preset direction arrangement, the first embedded part (410) is provided in the first decorative surface layer (2), and the second embedded part (420) is provided in the second decorative surface layer (3); A first rotating shaft (510), the first rotating shaft (510) is rotatably provided on the first embedded part (410), and the first rotating shaft (510) is connected with the first frame (110) ;and A second rotating shaft (520), the second rotating shaft (520) is rotatably provided on the second embedded part (420), and the second rotating shaft (520) is connected to the second frame (120) . 10. The building according to claim 9, characterized in that, at least one of the first decorative surface layer (2) and the second decorative surface layer (3) is provided with a keyhole, the The photovoltaic device (1) further comprises an electric mortise lock movably provided on the frame (10) between a disengaged position and a locked position, wherein the electric mortise lock in the disengaged position is disengaged the locking hole, the electric mortise lock at the locking position is fitted in the locking hole, Preferably, there are a plurality of the locking holes, the plurality of locking holes are located on a first circumference, the center of the first circumference is located on the rotation axis of the frame (10), and all the locking holes located at the locking position The electric mortise lock is fitted in one of the plurality of locking holes.

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