Photovoltaic device

Abstract

The utility model discloses photovoltaic equipment, which comprises a plurality of photovoltaic devices and a light reflecting piece, each photovoltaic device is rotatably connected with another photovoltaic device, and each photovoltaic device is a double-sided photovoltaic device and comprises a first light receiving side and a second light receiving side which are opposite to each other. The light reflecting part is arranged on the second light receiving side of the photovoltaic device. When the photovoltaic equipment is in a folded state, the light reflecting part is stored and clamped between the two adjacent second light receiving sides, and when the photovoltaic equipment is in an unfolded state, the two adjacent photovoltaic devices are kept at a preset angle, and the light reflecting part is in a flattened state and reflects light to the second light receiving sides. Therefore, on one hand, each photovoltaic device is rotationally connected with the other photovoltaic device, and the reflecting part is in a folded or unfolded state along with folding and unfolding of the photovoltaic equipment, so that the photovoltaic equipment is easy to fold and unfold, and the photovoltaic equipment is convenient to use; and on the other hand, the light reflecting part can reflect light to the second light receiving side when being unfolded, so that the power generation efficiency of the photovoltaic equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic equipment, and more specifically, to a photovoltaic equipment. Background Art

[0002] A photovoltaic panel is a device that converts solar energy into light energy. In order to increase the power generation and make the photovoltaic panel easy to carry, multiple photovoltaic panels are often electrically connected. However, the process of splicing multiple photovoltaic panels is troublesome. In addition, in order to improve the power generation efficiency of the photovoltaic panel, a reflective member is often used, but using the reflective member will increase the additional operation steps for users. Summary of the Utility Model

[0003] An embodiment of the utility model provides a photovoltaic equipment.

[0004] A photovoltaic equipment includes a plurality of photovoltaic devices and a reflective member. Each of the photovoltaic devices is rotatably connected to another one. The photovoltaic device is a bifacial photovoltaic device and includes a first light-receiving side and a second light-receiving side that face away from each other. The reflective member is disposed on the second light-receiving side of the photovoltaic device. The photovoltaic equipment can be in a folded state and an unfolded state. When the photovoltaic equipment is in the folded state, the plurality of photovoltaic devices are stacked and arranged, and the adjacent first light-receiving sides face each other, and the adjacent second light-receiving sides face each other. The reflective member is received and clamped between two adjacent second light-receiving sides.

[0005] When the photovoltaic equipment is in the unfolded state, two adjacent photovoltaic devices are kept at a predetermined angle, and the reflective member is in a flattened state and reflects light to the second light-receiving side.

[0006] In this way, on the one hand, each of the photovoltaic devices is rotatably connected to another one, and the reflective member is also in a received or flattened state as the photovoltaic equipment is folded and unfolded, so that the photovoltaic equipment is easy to fold and unfold without adding extra steps, which is convenient for using the photovoltaic equipment; on the other hand, the photovoltaic device is a bifacial photovoltaic device, and the reflective member can reflect light to the second light-receiving side when unfolded, thereby improving the power generation efficiency of the photovoltaic equipment.

[0007] In some embodiments, when the photovoltaic equipment is in the folded state, the reflective member is within the space defined by the edge of the photovoltaic device.

[0008] In some embodiments, when the photovoltaic equipment is in the unfolded state, the reflective member provides a pulling force to two adjacent photovoltaic devices, so that the two adjacent photovoltaic devices are kept at the predetermined angle through the reflective member.

[0009] In some embodiments, the photovoltaic device includes an elastic band that connects the reflective member and the edge of the photovoltaic device. When the photovoltaic device is in the deployed state, the elastic band is in an extended state and provides a tensile force to the reflective member. During the process of the photovoltaic device switching from the deployed state to the folded state, the elastic band pulls the reflective member for storage.

[0010] In some embodiments, each reflective member is connected to one elastic band, and the elastic band is connected to the middle position in the length direction of the reflective member.

[0011] In some embodiments, a waterproof layer is coated on the reflective member.

[0012] In some embodiments, the photovoltaic device includes a plurality of adapter members, and each photovoltaic device is rotatably connected to another photovoltaic device through the adapter member.

[0013] In some embodiments, the photovoltaic device includes a photovoltaic panel and a frame. The frame wraps the edge of the photovoltaic panel, and the adapter member connects the frames of two adjacent photovoltaic devices so that the two adjacent photovoltaic devices are rotatably connected.

[0014] In some embodiments, the frame includes two long edges and two short edges. The two long edges are arranged opposite to each other, and the two short edges are located between the two long edges. The adapter member connects the long edges.

[0015] In some embodiments, the adapter member includes a first rotating member, a second rotating member, and a rotating shaft. The first rotating member and the second rotating member are rotatably connected through the rotating shaft. Two adjacent photovoltaic devices are respectively a first photovoltaic device and a second photovoltaic device. The first rotating member is fixed on the frame of the first photovoltaic device, and the second rotating member is fixed on the frame of the second photovoltaic device.

[0016] The additional aspects and advantages of the present utility model will be partly given in the following description, partly become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0018] Figure 1 is a three-dimensional schematic diagram of the photovoltaic device according to the embodiment of the present utility model in the folded state;

[0019] Figure 2 is a three-dimensional schematic diagram of the photovoltaic device according to the embodiment of the present utility model in the deployed state;

[0020] Figure 3 is a schematic plan view of the photovoltaic device according to an embodiment of the present utility model in a folded state;

[0021] Figure 4 is another three-dimensional schematic view of the photovoltaic device according to an embodiment of the present utility model in an unfolded state;

[0022] Figure 5 is a partially enlarged schematic view of the photovoltaic device according to an embodiment of the present utility model in a folded state;

[0023] Figure 6 is a three-dimensional schematic view of the photovoltaic device according to an embodiment of the present utility model;

[0024] Figure 7 is a three-dimensional schematic view of the photovoltaic device according to an embodiment of the present utility model from another angle;

[0025] Figure 8 is a partially enlarged schematic view of the photovoltaic device according to an embodiment of the present utility model in an unfolded state.

[0026] Description of reference numerals:

[0027] 1000 - Photovoltaic device; 100 - Photovoltaic device; 110 - First light-receiving side; 120 - Second light-receiving side; 10 - Photovoltaic panel; 11 - Substrate; 12 - Solar cell; 13 - Transparent cover plate; 20 - Frame; 210 - Long edge; 220 - Short edge; 30 - Junction box; 31 - First junction box; 32 - Second junction box; 33 - Cable; 200 - Adapter; 201 - First rotating member; 202 - Second rotating member; 203 - Rotating shaft; 300 - Reflective member; 400 - Elastic band. Detailed embodiments

[0028] The following details the embodiments of the present utility model. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0029] In the present utility model, unless otherwise clearly specified or limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may also 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" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates 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 simply indicates that the horizontal height of the first feature is lower than that of the second feature.

[0030] The following disclosure provides many different embodiments or examples for implementing different structures of the present utility model. To simplify the disclosure of the present utility model, components and settings of specific examples are described hereinafter. Of course, they are only examples and are not intended to limit the present utility model. In addition, the present utility model may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between various embodiments and / or settings discussed. In addition, the present utility model 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.

[0031] Please refer to Figures 1-5 , the photovoltaic device 1000 of the embodiment of the present application includes a plurality of photovoltaic modules 100 and a reflector 300. Each photovoltaic module 100 is rotatably connected to another photovoltaic module 100. The photovoltaic module 100 is a bifacial photovoltaic module 100 and includes a first light-receiving side 110 and a second light-receiving side 120 facing away from each other. The reflector 300 is disposed on the second light-receiving side 120 of the photovoltaic module 100. The photovoltaic device 1000 can be in a folded state and an unfolded state. When the photovoltaic device 1000 is in the folded state, a plurality of photovoltaic modules 100 are stacked and arranged, and adjacent first light-receiving sides 110 face each other, and adjacent second light-receiving sides 120 face each other. The reflector 300 is received and clamped between two adjacent second light-receiving sides 120. When the photovoltaic device 1000 is in the unfolded state, two adjacent photovoltaic modules 100 are held at a predetermined angle, and the reflector 300 is in a flattened state and reflects light to the second light-receiving side 120.

[0032] In this way, on the one hand, each photovoltaic module 100 is rotatably connected to another photovoltaic module 100, and the reflector 300 is also in a received or flattened state as the photovoltaic device 1000 folds and unfolds, making it easy for the photovoltaic device 1000 to fold and unfold and facilitating the use of the photovoltaic device 1000; on the other hand, the photovoltaic module 100 is a bifacial photovoltaic module 100, and the reflector 300 can reflect light to the second light-receiving side 120 when unfolded, improving the power generation efficiency of the photovoltaic device 1000.

[0033] Specifically, the number of photovoltaic devices 100 can be 2, 4, 5, 6, 8, etc. The photovoltaic device 100 is generally plate-shaped and has a long edge and a short edge that is substantially perpendicular to the long edge. A plurality of photovoltaic devices 100 can be detachably connected end to end in sequence. For example, a plurality of photovoltaic devices 100 are detachably connected end to end in sequence along the width direction of the photovoltaic device 100, which is conducive to the assembly and disassembly of the photovoltaic device 1000 and facilitates the use of the photovoltaic device 1000.

[0034] Since a plurality of photovoltaic devices 1000 are rotatably connected, the photovoltaic device 1000 can be in a folded state and an unfolded state. When the photovoltaic device 1000 is in the folded state, a plurality of photovoltaic devices 100 are stacked, as Figure 3 shown. When the photovoltaic device 1000 is in the unfolded state, a predetermined angle α is formed between two adjacent photovoltaic devices 100, as Figure 2 shown. Exemplarily, when the photovoltaic device 1000 is in the unfolded state, two adjacent photovoltaic devices 100 are kept at a predetermined angle. In this way, the photovoltaic device 1000 is convenient for storage and transportation when folded. When the photovoltaic device 1000 is in the unfolded state, the angle between two adjacent photovoltaic devices 100 is limited to a predetermined angle, so that the state of the photovoltaic device 1000 is stable, the light-receiving area of the photovoltaic device 100 is increased, and it is beneficial for the photovoltaic device 1000 to convert solar energy into electric energy.

[0035] The photovoltaic device 100 is a double-sided photovoltaic device 100, and both surfaces in the thickness direction of the photovoltaic device 100 can absorb light and convert the light into electric energy. The first light-receiving side 110 and the second light-receiving side 120 of the photovoltaic device 100 are respectively the two sides in the thickness direction of the photovoltaic device 100. Generally, when the photovoltaic device 100 is in the unfolded state, the first light-receiving side 110 of the photovoltaic device 100 faces away from the bearing surface (such as the ground), and the second light-receiving side 120 of the photovoltaic device 100 faces the bearing surface.

[0036] The reflector 300 is flexible so that the reflector 300 can be stored by folding or other means. When the photovoltaic device 100 is in the unfolded state, the reflector 300 is flattened so that the reflecting area of the reflector 300 is larger, thereby reflecting more light to the photovoltaic device 100. It can be understood that when the reflector 300 is flattened, if the sunlight is inclined to the surface of the reflector 300 and irradiates on the reflector 300, at this time, the reflector 300 can reflect the light to the photovoltaic device 100.

[0037] In one example, the predetermined angle α is, for example, 120° - 150°. For example, the predetermined angle α can be angles such as 120°, 125°, 130°, 140°, or 150°. In this way, the area where the photovoltaic device 100 unfolds is relatively large, which is beneficial for the photovoltaic device 1000 to convert solar energy into electrical energy.

[0038] It can be understood that in some other embodiments, the predetermined angle α is, for example, 50° - 170°. For example, the predetermined angle α can be angles such as 50°, 60°, or 70°.

[0039] The adjacent photovoltaic devices 100 are inclined with respect to the bearing surface. On the one hand, it can save the floor area of the photovoltaic device 1000 without reducing the power generation efficiency. On the other hand, when there are obstacles such as leaves on the photovoltaic device 100, the obstacles can slide off the surface of the photovoltaic device 100, avoiding the reduction of power generation efficiency caused by partial occlusion of the photovoltaic device 100.

[0040] Please refer to Figures 3-5 , in some embodiments, when the photovoltaic device 1000 is in the folded state, the reflector 300 is located within the space defined by the edges of the photovoltaic device 100. For example, the reflector 300 can be hidden in the adjacent photovoltaic device 100 and does not protrude beyond the edge of the photovoltaic device 100. In this way, the reflector 300 is hidden within the photovoltaic device 1000 when the photovoltaic device 1000 is in the folded state, reducing the probability of the reflector 300 coming into contact with external objects and increasing the service life of the reflector 300. In addition, the reflector 300 can play a buffering role during the folding process of the photovoltaic device 1000, reducing the impact on the photovoltaic device 100 and increasing the service life of the photovoltaic device 1000.

[0041] Please refer to Figure 4 , in some embodiments, when the photovoltaic device 1000 is in the unfolded state, the reflector 300 provides a pulling force to the two adjacent photovoltaic devices 100, so that the two adjacent photovoltaic devices 100 are maintained at a predetermined angle through the reflector 300. Specifically, when the photovoltaic device 1000 is unfolded, the photovoltaic device 100 is generally inclined with respect to the bearing surface. Under the action of gravity, the photovoltaic device 100 has a tendency to be horizontally arranged. Under the pulling force of the reflector 300, the reflector 300 plays a limiting role on the photovoltaic device 100, enabling the photovoltaic device 100 to be maintained at a predetermined angle, thereby making the state of the photovoltaic device 1000 stable and beneficial to improving the power generation efficiency of the photovoltaic device 1000.

[0042] In some embodiments, one end of the reflector 300 can be fixed to the photovoltaic device 100 by means such as snap-fastening or riveting.

[0043] Please refer to Figure 3 andFigure 5 , in some embodiments, the photovoltaic device 1000 includes an elastic band 400. The elastic band 400 connects the reflector 300 and the edge of the photovoltaic device 100. When the photovoltaic device 1000 is in the unfolded state, the elastic band 400 is in the stretched state and provides a pulling force to the reflector 300. During the process of the photovoltaic device 1000 switching from the unfolded state to the folded state, the elastic band 400 pulls the reflector 300 to be received. In this way, the elastic band 400 can facilitate the receiving process of the reflector 300 and improve the convenience of using the photovoltaic device 1000.

[0044] Specifically, the elastic band 400 can expand and contract along its length direction. When the elastic band 400 is in the stretched state, the elastic band 400 has a restoring force, so as to provide a pulling force to the reflector 300. When the photovoltaic device 1000 is in a certain state, under the action of the gravity of the photovoltaic device 100 and the like, the elastic band 400 can remain in the extended state. During the folding process of the photovoltaic device 1000, the acting force on the elastic band 400 by the photovoltaic device 100 decreases, so that the elastic band 400 can shorten to drive the reflector 300 to be received.

[0045] In some embodiments, each reflector 300 is connected to an elastic band 400, and the elastic band 400 is connected to the middle position in the length direction of the reflector 300. In this way, the pulling force applied by the elastic band 400 to the reflector 300 can make the reflector 300 be received towards the middle position, and the received volume is smaller.

[0046] In some embodiments, a waterproof layer is coated on the reflector 300. In this way, the waterproof layer can reduce the damage of the reflector 300 by liquids such as rainwater and improve the service life of the reflector 300. Specifically, the waterproof layer can be made of a hydrophobic material, such as waterproof paint, water-based acrylate, etc.

[0047] Please refer to Figure 4 and Figure 5 , in some embodiments, the photovoltaic device 1000 includes a plurality of adapters 200. Each photovoltaic device 100 is rotatably connected to another photovoltaic device 100 through the adapter 200. In this way, the adapter 200 can enable two adjacent photovoltaic devices 100 to be rotatably connected.

[0048] Please refer to Figures 6-8 , in some embodiments, the photovoltaic device 100 includes a photovoltaic panel 10 and a frame 20. The frame 20 wraps the edge of the photovoltaic panel 10. The adapter 200 connects the frames 20 of two adjacent photovoltaic devices 100 so that two adjacent photovoltaic devices 100 are rotatably connected. In this way, the frame 20 can provide an installation position for the adapter 200, so that two adjacent photovoltaic devices 100 can be rotatably connected through the adapter 200.

[0049] Please refer toFigures 6-8 In one embodiment, the photovoltaic panel 10 may include a substrate 11, solar cells 12, and a light-transmitting cover plate 13. The solar cells 12 are disposed on the substrate 11, and the light-transmitting cover plate 13 covers the solar cells 12. Specifically, the substrate 11 can be made of materials such as PET, CPC, fiberglass board, or glass. The substrate 11 can be a sheet such as a rectangle or a rounded rectangle. The solar cells 12 can be fixed to the substrate 11 by means of adhesion. The solar cells 12 are used to convert light energy into solar energy. The number of solar cells 12 can be multiple, and the multiple solar cells 12 are arranged in an array. For example, the row arrangement direction of the solar cells 12 is the same as the length direction of the substrate 11, and the column arrangement direction of the solar cells 12 is the same as the width direction of the substrate 11.

[0050] The light-transmitting cover plate 13 can be made of materials such as PET, CPC, or glass, and the light-transmitting cover plate 13 can have the same shape and size as the substrate 11. The light-transmitting cover plate 13 can be bonded to the substrate 11 or the solar cells 12 by means of adhesion.

[0051] Please refer to Figures 6-8 In one example, the frame 20 includes two long edges 210 and two short edges 220. The two long edges 210 are disposed opposite to each other, and the two short edges 220 are located between the two long edges 210. The adapter 200 can be connected to the long edges 210 of the frame 20, so that the center of gravity of the photovoltaic device 1000 in the folded state is lower and the transportation is more convenient.

[0052] Please refer to Figure 8 For ease of description, two adjacent photovoltaic devices 100 are respectively a first photovoltaic device 101 and a second photovoltaic device 102. In some embodiments, the adapter 200 includes a first rotating member 201, a second rotating member 202, and a rotating shaft 203. The first rotating member 201 and the second rotating member 202 are rotatably connected by the rotating shaft 203. The first rotating member 201 is fixed to the first photovoltaic device 101, and the second rotating member 202 is fixed to the second photovoltaic device 102. Specifically, the first rotating member 201 is fixed to the frame 20 of the first photovoltaic device 101, and the second rotating member 202 is fixed to the frame 20 of the second photovoltaic device 102.

[0053] Or rather, the first rotating member 201 is fixed to the frame 20 of one of the two adjacent photovoltaic devices 100, and the second rotating member 202 is fixed to the frame 20 of the other photovoltaic device 100. In this way, the first rotating member 201 and the second rotating member 202 can rotatably connect the first photovoltaic device 101 and the second photovoltaic device 102.

[0054] Please refer to Figures 4-6, in some embodiments, the photovoltaic device 100 further includes a junction box 30. The junction box 30 is disposed on the photovoltaic panel 10 and is electrically connected to the photovoltaic panel 10. The number of junction boxes 30 for each photovoltaic panel 10 may be two. The junction box 30 may include a first junction box 31 and a second junction box 32, and both the first junction box 31 and the second junction box 32 are electrically connected to the photovoltaic panel 10. Two adjacent photovoltaic devices 100 are electrically connected through the first junction box 31 and the second junction box 32.

[0055] As Figure 4 shown, in two adjacent photovoltaic devices 100, the first junction box 31 of one of the photovoltaic devices 100 is electrically connected to the second junction box 32 of the other photovoltaic device 100 through a cable 33. The first junction box 31 and the second junction box 32 may be spaced apart along the length direction of the photovoltaic panel 10, so that the bending angle of the cable 33 between the first junction box 31 on one of the photovoltaic devices 100 and the second junction box 32 on the other photovoltaic device 100 is relatively small, which is beneficial to the electrical connection between two adjacent photovoltaic devices 100 through the first junction box 31 and the second junction box 32.

[0056] In the description of the embodiments of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be construed 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 described features. In the description of the embodiments of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0057] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0058] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A photovoltaic device, characterized in that, Comprising: A plurality of photovoltaic devices, each of the photovoltaic devices being rotatably connected to another one of the photovoltaic devices, the photovoltaic devices being bifacial photovoltaic devices and including a first light-receiving side and a second light-receiving side facing away from each other; and A reflector, the reflector being disposed on the second light-receiving side of the photovoltaic device; wherein, The photovoltaic device can be in a folded state and an unfolded state. When the photovoltaic device is in the folded state, the plurality of photovoltaic devices are stacked and arranged, and the adjacent first light-receiving sides are opposite to each other, and the adjacent second light-receiving sides are opposite to each other. The reflector is received and clamped between two adjacent second light-receiving sides, When the photovoltaic device is in the unfolded state, two adjacent photovoltaic devices are maintained at a predetermined angle, and the reflector is in a flattened state and reflects light to the second light-receiving side.

2. The photovoltaic device according to claim 1, wherein When the photovoltaic device is in the folded state, the reflector is within the space defined by the edges of the photovoltaic device.

3. The photovoltaic device according to claim 1, wherein When the photovoltaic device is in the unfolded state, the reflector provides a pulling force to two adjacent photovoltaic devices, so that the two adjacent photovoltaic devices are maintained at the predetermined angle through the reflector.

4. The photovoltaic device according to claim 1, wherein, The photovoltaic device includes an elastic band, the elastic band connecting the reflector and the edge of the photovoltaic device. When the photovoltaic device is in the unfolded state, the elastic band is in an extended state and provides a pulling force to the reflector. During the process of the photovoltaic device switching from the unfolded state to the folded state, the elastic band pulls the reflector to be received.

5. The photovoltaic device according to claim 4, wherein, Each reflector is connected to one elastic band, and the elastic band is connected to the middle position in the length direction of the reflector.

6. The photovoltaic device according to claim 1, characterized in that, A waterproof layer is coated on the reflector.

7. The photovoltaic device according to claim 1, wherein, The photovoltaic device includes a plurality of adapters, and each of the photovoltaic devices is rotatably connected to another one of the photovoltaic devices through the adapter.

8. The photovoltaic device according to claim 7, wherein, The photovoltaic device includes a photovoltaic panel and a frame, the frame wrapping the edge of the photovoltaic panel, and the adapter connecting the frames of two adjacent photovoltaic devices so that the two adjacent photovoltaic devices are rotatably connected.

9. The photovoltaic device according to claim 8, characterized in that, The frame includes two long edges and two short edges, the two long edges being oppositely arranged, and the two short edges being located between the two long edges, and the adapter connecting the long edges.

10. The photovoltaic device according to claim 8, characterized in that, The adapter includes a first rotating member, a second rotating member and a rotating shaft, the first rotating member and the second rotating member being rotatably connected through the rotating shaft. Two adjacent photovoltaic devices are respectively a first photovoltaic device and a second photovoltaic device, the first rotating member being fixed on the frame of the first photovoltaic device, and the second rotating member being fixed on the frame of the second photovoltaic device.

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