Photovoltaic device

Abstract

The embodiment of the utility model provides photovoltaic equipment. The photovoltaic equipment comprises a photovoltaic device and a temperature adjusting film, the surface of the photovoltaic device is covered with the temperature adjusting film, the temperature adjusting film has a light transmitting state and a radiation light reflecting state, in the light transmitting state, light can penetrate through the temperature adjusting film to reach the photovoltaic device, and in the radiation light reflecting state, the photovoltaic device can dissipate heat through the temperature adjusting film. According to the photovoltaic device, the temperature adjusting film is arranged on the photovoltaic device, so that heat dissipation can be carried out when the temperature of the photovoltaic device is too high, and the photovoltaic device is made to be at the normal working temperature.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic equipment, in particular to a photovoltaic equipment. Background Art

[0002] Photovoltaic panels are devices that convert solar energy into electrical energy. The photoelectric conversion efficiency of photovoltaic panels is related to temperature. When the temperature is too high, the photoelectric conversion efficiency of photovoltaic panels will be affected. Therefore, how to ensure the photoelectric conversion efficiency of photovoltaic panels has become a technical problem that needs to be solved urgently. Utility Model Content

[0003] The utility model provides a photovoltaic device.

[0004] The photovoltaic device of the embodiment of the utility model comprises:

[0005] Photovoltaic installations;

[0006] A temperature regulating film is provided on the surface of the photovoltaic device, and the temperature regulating film has a light-transmitting state and a radiation-reflecting state. In the light-transmitting state, light can pass through the temperature regulating film to the photovoltaic device. In the radiation-reflecting state, the photovoltaic device can dissipate heat through the temperature regulating film.

[0007] In certain embodiments, the photovoltaic device further comprises:

[0008] A temperature sensor is connected to the temperature regulating film, and the temperature regulating film switches to the radiation reflecting state when the temperature sensor detects that the temperature is greater than or equal to a preset threshold, and switches to the light transmitting state when the temperature is less than the preset threshold.

[0009] In some embodiments, the temperature sensor is disposed on a backlight surface of the photovoltaic device.

[0010] In certain embodiments, the temperature regulating film is made of a radiation cooling material.

[0011] In certain embodiments, the photovoltaic device includes a photovoltaic panel and a frame, the temperature regulating film is attached to the photovoltaic panel, and the frame wraps around the edges of the photovoltaic panel and the temperature regulating film.

[0012] In some embodiments, the photovoltaic panel includes a substrate, a battery cell and a light-transmitting cover plate, the battery cell is arranged on the substrate, the light-transmitting cover plate is covered on the side of the battery cell facing away from the substrate, and the temperature regulating film is covered on the side of the light-transmitting cover plate facing away from the battery cell.

[0013] In some embodiments, the frame includes a plurality of enclosing members and a plurality of connecting members. The enclosing members and the connecting members are connected end to end to form a ring, and the connecting members are detachably inserted into two adjacent enclosing members.

[0014] In some embodiments, the enclosing members are straight strips, and the connecting members form the corner parts of the frame.

[0015] In some embodiments, the enclosing members include long members and short members. The long members form the long edges of the frame, the short members form the short edges of the frame, and the connecting members connect the adjacent long members and short members.

[0016] In some embodiments, the connecting member includes a connecting portion and a plugging portion connected to the connecting portion. The enclosing member is provided with a plugging hole, the plugging portion is inserted into the plugging hole, and the connecting portion is butted against the enclosing member.

[0017] In the photovoltaic device of the present application, by providing a temperature regulating film on the photovoltaic device, when the temperature is normal, light can pass through the temperature regulating film, so that the photovoltaic device can perform normal photoelectric conversion. When the temperature is too high, the temperature regulating film is in a radiation and reflection state, thereby preventing light from entering the photovoltaic device. And the photovoltaic device can dissipate heat through the temperature regulating film, so that the temperature of the photovoltaic device can be reduced, thereby ensuring that the photovoltaic device can maintain a high conversion efficiency.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0020] Figure 1 is a three-dimensional schematic view of the photovoltaic device according to the embodiment of the present invention in a folded state;

[0021] Figure 2 is a three-dimensional schematic view of the photovoltaic device according to the embodiment of the present invention in an unfolded state;

[0022] Figure 3 is a plan schematic view of the photovoltaic device according to the embodiment of the present invention in a folded state;

[0023] Figure 4 is another three-dimensional schematic view of the photovoltaic device according to the embodiment of the present invention in an unfolded state;

[0024] Figure 5 is Figure 4Another perspective schematic diagram of the photovoltaic device;

[0025] Figure 6 It is a partially enlarged schematic diagram of the photovoltaic device in the folded state according to an embodiment of the present invention;

[0026] Figure 7 It is a three-dimensional schematic diagram of the photovoltaic device according to an embodiment of the present invention;

[0027] Figure 8 It is a three-dimensional schematic diagram of the photovoltaic device from another perspective according to an embodiment of the present invention;

[0028] Figure 9 It is a plan schematic diagram of the photovoltaic device according to an embodiment of the present invention;

[0029] Figure 10 It is a three-dimensional schematic diagram of the first junction box of the photovoltaic device according to an embodiment of the present invention;

[0030] Figure 11 It is an exploded schematic diagram of the first junction box of the photovoltaic device according to an embodiment of the present invention;

[0031] Figure 12 It is a three-dimensional schematic diagram of the frame of the photovoltaic device according to an embodiment of the present invention;

[0032] Figure 13 It is an exploded schematic diagram of the frame of the photovoltaic device according to an embodiment of the present invention;

[0033] Figure 14 It is a partially enlarged schematic diagram of the frame of the photovoltaic device according to an embodiment of the present invention;

[0034] Figure 15 It is a partially enlarged schematic diagram of the photovoltaic device in the unfolded state according to an embodiment of the present invention;

[0035] Figure 16 It is a three-dimensional schematic diagram of the adapter according to an embodiment of the present invention;

[0036] Figure 17 It is another three-dimensional schematic diagram of the adapter according to an embodiment of the present invention;

[0037] Figure 18 It is an exploded schematic diagram of the adapter according to an embodiment of the present invention.

[0038] Explanation of reference numerals:

[0039] 1000 - Photovoltaic device; 100 - Photovoltaic installation; 110 - Accommodating space; 10 - Photovoltaic panel; 11 - Substrate; 12 - Solar cell; 13 - Transparent cover plate; 14 - Positive electrode trace; 141 - First positive electrode end; 142 - Second positive electrode end; 15 - Negative electrode trace; 151 - First negative electrode end; 152 - Second negative electrode end; 16 - Positive electrode lead wire; 161 - Positive electrode lead section; 17 - Negative electrode lead wire; 171 - Negative electrode lead section; 20 - Frame; 21 - Enclosing member; Insertion hole 210; 211 - Long member; 212 - Short member; 213 - Through hole; 22 - Connecting member; 221 - Connecting portion; 222 - Insertion portion; 223 - Threaded hole; 23 - Marker; 24 - Installation groove; 25 - Installation hole; 30 - Junction box; 31 - First junction box; 32 - Second junction box; 321 - Box body; 3211 - Storage space; 3212 - Insertion port; 3213 - Opening; 3214 - Limiting rib; 322 - Box cover; 323 - Wiring seat; 3231 - Limiting groove; 33 - Cable; 40 - First cylindrical portion; 50 - Second cylindrical portion; 200 - Adapter; 201 - First rotating member; 2011 - First adapter hole; 2012 - Card slot; 2013 - First adapter portion; 2014 - First installation portion; 2015 - First abutting portion; 202 - Second rotating member; 2021 - Second adapter hole; 2022 - Avoidance groove; 2023 - Second adapter portion; 2024 - Second installation portion; 2025 - Second abutting portion; 203 - Rotating shaft; 204 - Handle; 205 - Elastic member: 400 - Temperature regulating film, 500 - Temperature sensor. Detailed implementation manners

[0040] The following details the implementation manners of the present utility model. Examples of the implementation manners are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The implementation manners 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.

[0041] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "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 utility model 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 utility model. 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 utility model, the meaning of "a plurality" is two or more, unless otherwise specifically and clearly defined.

[0042] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" shall be understood in a broad sense. 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 utility model can be understood according to specific circumstances.

[0043] In the present utility model, unless otherwise clearly specified and defined, 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 indicates that the first feature has a higher horizontal height than 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 indicates that the first feature has a lower horizontal height than the second feature.

[0044] 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 below. Of course, they are merely 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. 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 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.

[0045] Please refer to Figures 1 - 3 , the photovoltaic device 1000 of the embodiment of the present application includes a photovoltaic device 100 and an adapter 200. The number of photovoltaic devices 100 is multiple. For example, the number of photovoltaic devices 100 can be 2, 4, 5, 6, 8, etc. The multiple photovoltaic devices 100 can be rotatably connected through the adapter 200. Or rather, the adapter 200 can connect two adjacent photovoltaic devices 100. The photovoltaic device 100 is generally in a plate shape, and the photovoltaic device 100 has a long edge and a short edge that is substantially perpendicular to the long edge.

[0046] In one embodiment, one side of each photovoltaic device 100 is rotatably connected to one side of another photovoltaic device 100, and the other side of each said photovoltaic device 100 is used to abut against the bearing surface. Or rather, the multiple photovoltaic devices 100 can be detachably connected end to end in sequence. For example, the multiple photovoltaic devices 100 are detachably connected end to end in sequence along the width direction of the photovoltaic device 100. That is, the long edges of the multiple photovoltaic devices 100 can be detachably connected through the adapter 200, which is beneficial to the assembly and disassembly of this photovoltaic device 1000 and facilitates the use of the photovoltaic device 1000.

[0047] Since the multiple 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, the multiple 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 held at a predetermined angle through the adapter 200. 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 by the adapter 200, so that the state of the photovoltaic device 1000 is stable, and the light-receiving area of the photovoltaic device 100 is increased, which is beneficial to the photovoltaic device 1000 to convert solar energy into electrical energy.

[0048] 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.

[0049] 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°.

[0050] The adjacent photovoltaic devices 100 are inclined with respect to the bearing surface. On the premise of not reducing the power generation, on the one hand, the floor area of the photovoltaic device 1000 can be saved; on the other hand, when there are obstacles such as leaves on the photovoltaic device 100, the obstacles such as leaves can slide off the surface of the photovoltaic device 100, avoiding the reduction of power generation caused by partial occlusion of the photovoltaic device 100.

[0051] Please refer to Figure 5 , in some embodiments, the photovoltaic device 1000 further includes a temperature adjustment film 400. The temperature adjustment film 400 covers the surface of the photovoltaic device 100. The temperature adjustment film 400 has a light-transmitting state and a radiation-reflecting state. In the light-transmitting state, light can pass through the temperature adjustment film 400 to the photovoltaic device 100. In the radiation-reflecting state, the photovoltaic device 100 can dissipate heat through the temperature adjustment film 400.

[0052] Specifically, the number of the temperature adjustment films 400 is multiple. Each temperature adjustment film 400 covers the surface (light-receiving surface) of a photovoltaic device 100. The temperature adjustment film 400 has two states: a light-transmitting state and a radiation-reflecting state. Among them, when the temperature adjustment film 400 is in the light-transmitting state, sunlight can normally pass through the temperature adjustment film 400, so that the photovoltaic device 100 can receive sunlight and work normally. When the temperature adjustment film 400 is in the radiation-reflecting state, the temperature adjustment film 400 can block the infrared rays in sunlight and reflect them out, and at the same time scatter the infrared heat rays of the photovoltaic device 100 into space through the atmospheric window, thereby realizing the heat dissipation of the photovoltaic device 100 and reducing the temperature of the photovoltaic device 100 to the normal operating temperature.

[0053] Furthermore, the photovoltaic device 1000 may further include a controller. The controller can be connected to the temperature adjustment film 400, and the controller can control the state switching of the temperature adjustment film 400 by applying current or voltage to the temperature adjustment film 400. For example, when the temperature of the photovoltaic device 1000 is too high, the controller can apply current to the temperature adjustment film 400, so that the temperature adjustment film 400 switches from the light-transmitting state to the radiation-reflecting state, thereby enabling the photovoltaic device 100 to cool down.

[0054] The temperature regulating film 400 is made of a radiative cooling material. That is, the temperature regulating film 400 can be a radiative cooling film. Understandably, the radiative cooling film utilizes the characteristic that an object's surface emits radiant energy of different wavelengths at different temperatures. When the temperature of an object is higher than its surrounding environment, it releases heat in the form of mid-infrared radiation (with a wavelength of approximately between 8 and 13 micrometers).

[0055] Please refer to Figure 4 or Figure 7 , in some embodiments, the photovoltaic device 1000 further includes a temperature sensor 500. The temperature sensor 500 is connected to the temperature regulating film 400. The temperature regulating film 400 switches to a radiative reflective state when the temperature sensor 500 detects that the temperature is greater than or equal to a preset threshold, and switches to a light-transmitting state when the temperature is less than the preset threshold. Herein, the preset threshold can be set according to the actual situation.

[0056] For example, if the optimal operating temperature of the photovoltaic device 100 is 15 - 25 degrees, the preset threshold can be set to 30, 32, 35, or 40 degrees. Understandably, when the preset threshold is set to 35 degrees, when the temperature sensor 500 detects that the temperature is greater than or equal to 35 degrees, the temperature regulating film 400 is made to switch to the radiative reflective state. In this way, it is avoided that the infrared rays in sunlight pass through the temperature regulating film 400 to the photovoltaic device 100, enabling the photovoltaic device 100 to reduce its temperature. On the one hand, it avoids damage to the electronic components in the photovoltaic device 100 due to the excessive temperature of the photovoltaic device 100. On the other hand, it can make the photovoltaic device 100 return to the optimal operating temperature, ensuring the working efficiency of the photovoltaic device 100. When the temperature sensor 500 detects that the temperature is less than 35 degrees, the temperature regulating film 400 is made to switch to the light-transmitting state. In this way, the photovoltaic device 100 can operate normally to achieve photoelectric conversion.

[0057] In some embodiments, the temperature sensor 500 is disposed on the backlight surface of the photovoltaic device 100. Understandably, the backlight surface refers to the surface of the photovoltaic device 100 that is not irradiated by sunlight. In this way, it is avoided that sunlight directly irradiates the temperature sensor 500, ensuring that the temperature sensor 500 can accurately detect the temperature of the photovoltaic device 100.

[0058] Please refer to Figures 7 - 9, in some embodiments, the photovoltaic device 100 may include a photovoltaic panel 10, a frame 20, a junction box 30, a first cylindrical portion 40, and a second cylindrical portion 50. The temperature regulation film 400 may be attached to the photovoltaic panel 10, and the photovoltaic panel 10 and the temperature regulation film 400 are disposed on the frame 20. For example, the frame 20 wraps the edges of the photovoltaic panel 10 and the temperature regulation film 400, or rather, the edges of the photovoltaic panel 10 and the temperature regulation film 400 are embedded in the frame 20.

[0059] 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.

[0060] The first cylindrical portion 40 protrudes from the surface of the photovoltaic panel 10. For example, the first cylindrical portion 40 may be disposed on the frame 20 and protrudes from the frame 20 toward the light-receiving surface of the photovoltaic device 100. The first cylindrical portion 40 is used to form an accommodation space 110 for accommodating the junction box 30 between two stacked photovoltaic devices 100, so that the junction box 30 is not easily interfered with by other adjacent photovoltaic panels 10, which is beneficial to the stacking of multiple photovoltaic devices 100 to form an integral body.

[0061] The second cylindrical portion 50 protrudes from the backlight surface of the photovoltaic panel 10. The second cylindrical portion 50 is used to limit the positions of two adjacent photovoltaic devices 100, so that the photovoltaic panels 10 of two adjacent photovoltaic devices 100 are separated from each other, reducing the risk of the two photovoltaic panels 10 rubbing against each other and reducing the service life of the photovoltaic device 100.

[0062] Please refer to Figure 7 and Figure 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. The temperature regulation film 400 is disposed on the side of the light-transmitting cover plate facing away from the solar cells.

[0063] Specifically, the substrate 11 may be made of materials such as PET, CPC, fiberglass board, glass, etc. The substrate 11 may be a sheet such as a rectangle or a rounded rectangle. The solar cells 12 may 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 may 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. The column arrangement direction of the solar cells 12 is the same as the width direction of the substrate 11.

[0064] The light-transmitting cover plate 13 can be made of materials such as PET, CPC, glass, etc., 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 cell 12 by means of bonding.

[0065] Please refer to Figures 7 - 9 , in some embodiments, the photovoltaic panel 10 further includes a positive electrode trace 14 and a negative electrode trace 15. The positive electrode trace 14 is disposed on the substrate 11 and electrically connected to the solar cell 12. The positive electrode trace 14 has a first positive terminal 141 and a second positive terminal 142; the negative electrode trace 15 is disposed on the substrate 11 and electrically connected to the solar cell 12. The negative electrode trace 15 has a first negative terminal 151 and a second negative terminal 152. Among them, the first positive terminal 141 and the first negative terminal 151 are spaced apart and are used to cooperate with each other to be electrically connected to the first junction box 31, and the second positive terminal 142 and the second negative terminal 152 are spaced apart and are used to cooperate with each other to be electrically connected to the second junction box 32.

[0066] In this way, through the positive electrode trace 14 and the negative electrode trace 15 of the photovoltaic panel 10, the first junction box 31 and the second junction box 32 can be arranged in parallel, which is beneficial for the photovoltaic panel 10 to be electrically connected to an external device through at least one of the first junction box 31 and the second junction box 32, facilitating the use of the photovoltaic panel 10. For example, two adjacent photovoltaic devices 100 are electrically connected through the first junction box 31 and the second junction box 32.

[0067] Specifically, the first junction box 31 is disposed on the photovoltaic panel 10 and electrically connected to the first positive terminal 141 and the first negative terminal 151, and the second junction box 32 is disposed on the photovoltaic panel 10 and electrically connected to the second positive terminal 142 and the second negative terminal 152. Further, both the first junction box 31 and the second junction box 32 can be disposed on the light-transmitting cover plate 13. Since both the positive electrode trace 14 and the negative electrode trace 15 are disposed on the substrate 11, for this reason, the light-transmitting cover plate 13 can be provided with vias so that the first positive terminal 141, the first negative terminal 151, the second positive terminal 142, and the second negative terminal 152 can pass through the substrate 11 to the surface of the light-transmitting cover plate 13, so as to be connected to the first junction box 31 and the second junction box 32.

[0068] Please refer to Figure 9 , in some embodiments, the positive electrode trace 14 surrounds a plurality of solar cells 12 and extends along the circumferential direction of the substrate 11, and the negative electrode trace 15 surrounds a plurality of solar cells 12 and extends along the circumferential direction of the substrate 11. In this way, the positive electrode trace 14 and the negative electrode trace 15 are matched with the shape of the substrate 11, reducing the probability of interference between the positive electrode trace 14 and the negative electrode trace 15 and the solar cells 12 respectively. Exemplarily, the substrate 11 is generally a square plate. Therefore, the positive electrode trace 14 and the negative electrode trace 15 can be in a zigzag shape.

[0069] Please refer toFigures 7 - 9 , in some embodiments, the first positive electrode terminal 141 and the second positive electrode terminal 142 are respectively located on both sides of the width of the substrate 11, and the first negative electrode terminal 151 and the second negative electrode terminal 152 are respectively located on both sides of the width of the substrate 11. Or rather, the first positive electrode terminal 141 and the second positive electrode terminal 142 are respectively arranged close to the two long edges of the substrate 11, and the first negative electrode terminal 151 and the second negative electrode terminal 152 are respectively arranged close to the two short edges of the substrate 11. For this reason, the first junction box 31 and the second junction box 32 are respectively arranged on both sides in the width direction of the photovoltaic panel 10, so that the photovoltaic device 100 is electrically connected to external equipment from one side of the length edge of the photovoltaic panel 10, making the space of the first junction box 31 and the second junction box 32 larger, which is beneficial for the first junction box 31 and the second junction box 32 to electrically connect the two photovoltaic devices 100 together.

[0070] Please refer to Figure 9 , in some embodiments, the first positive electrode terminal 141 and the second positive electrode terminal 142 are staggered along the width direction of the substrate 11, and the first negative electrode terminal 151 and the second negative electrode terminal 152 are staggered along the width direction of the substrate 11. Or rather, the first positive electrode terminal 141 and the second positive electrode terminal 142 are arranged at intervals along the length direction of the substrate 11, and the first negative electrode terminal 151 and the second negative electrode terminal 152 are arranged at intervals along the length direction of the substrate 11.

[0071] In this way, as Figure 4 shown, in two adjacent photovoltaic devices 100, the first junction box 31 of one photovoltaic device 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 can be arranged at intervals 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 photovoltaic device 100 and the second junction box 32 on the other photovoltaic device 100 is smaller, which is beneficial for the two adjacent photovoltaic devices 100 to be electrically connected through the first junction box 31 and the second junction box 32.

[0072] Please refer to Figure 9 , in some embodiments, the photovoltaic panel 10 further includes a positive current lead 16 and a negative current lead 17. The positive current lead 16 is electrically connected to the battery cell 12 and the positive current trace 14, and the negative current lead 17 is electrically connected to the battery cell 12 and the negative current trace 15. In this way, the positive current lead 16 can lead the current of the battery cell 12 to the positive current trace 14, and the negative current lead 17 can lead the current of the battery cell 12 to the negative current trace 15, so that the positive current trace 14 and the negative current trace 15 can lead the current out of the photovoltaic panel 10.

[0073] Please refer to Figure 9, in some embodiments, the positive current lead 16 and the negative current lead 17 are respectively located on both sides of the substrate 11 in the width direction. In this way, the arrangement of the positive current lead 16 and the negative current lead 17 has a larger range, reducing the probability of short circuit between the positive current lead 16 and the negative current lead 17. Specifically, the positive current lead 16 is located between the solar cell 12 and the positive trace 14, and the negative current lead 17 is located between the solar cell 12 and the negative trace 15.

[0074] Please refer to Figure 9 , in some embodiments, the positive current lead 16 includes a plurality of positive current lead segments 161 arranged at intervals along the length direction of the substrate 11, the negative current lead 17 includes a plurality of negative current lead segments 171 arranged at intervals along the length direction of the substrate 11, the plurality of positive current leads 16 and the plurality of negative current leads 17 are connected in series through the solar cell 12, one of the positive current leads 16 is connected to the positive trace 14, and one of the negative current leads 17 is connected to the negative trace 15. In this way, the plurality of positive current leads 16 and the plurality of negative current leads 17 can connect the solar cells 12 in series, which is beneficial to leading out the current generated by the solar cells 12.

[0075] In some embodiments, the width of the positive trace 14 is greater than the width of the positive current lead 16, and the width of the negative trace 15 is greater than the width of the negative current lead 17. Since the current flow in the positive trace 14 and the negative trace 15 is relatively large, therefore, the width of the positive trace 14 is greater than the width of the positive current lead 16, and the width of the negative trace 15 is greater than the width of the negative current lead 17, which is beneficial to the photovoltaic panel 10 to lead the current to external devices.

[0076] Please refer to Figures 12 - 13 , in some embodiments, the frame 20 is used to abut against the bearing surface, so that the photovoltaic device 100 can abut against the bearing surface. The bearing surface is, for example, the ground. The frame 20 may include a plurality of enclosing members 21 and a plurality of connecting members 22. The enclosing members 21 and the connecting members 22 are connected end to end to form a ring, and the connecting members 22 are detachably inserted into two adjacent enclosing members 21.

[0077] In this way, the enclosing members 21 and the connecting members 22 of the frame 20 are detachably connected by means of insertion, making the frame 20 easy to assemble, and easier to wrap the edge of the photovoltaic panel 10, so that the photovoltaic panel 10 and the frame 20 are easy to assemble and disassemble.

[0078] Specifically, the enclosing members 21 and the connecting members 22 can be made of materials with relatively high strength such as aluminum alloy, so as to improve the impact resistance of the frame 20 and be beneficial to protecting the photovoltaic panel 10.

[0079] In some embodiments, the surrounding member 21 is in a straight strip shape, and the connecting member 22 forms the corner part of the frame 20. Since the manufacturing process of forming the corner part of the frame 20 with relatively large-sized components is difficult, therefore, the frame 20 is made in a straight strip shape, and the connecting member 22 forms the corner part of the frame 20, which can reduce the manufacturing difficulty of the frame 20.

[0080] Please refer to Figures 12 - 13 , in some embodiments, the surrounding member 21 includes a long member 211 and a short member 212. The long member 211 forms the long edge of the frame 20, and the short member 212 forms the short edge of the frame 20. The connecting member 22 connects the adjacent long member 211 and short member 212. Thus, the connecting member 22 can connect the long member 211 and the short member 212 to form the frame 20. Specifically, the number of both the long member 211 and the short member 212 is two, and the number of the connecting members 22 is four. The two long members 211 are arranged substantially in parallel, and the two short members 212 are arranged substantially in parallel.

[0081] Please refer to Figure 14 , in some embodiments, a marker 23 is provided on the surrounding member 21. Optionally, the marker 23 is provided on one of the short members 212. Thus, the marker 23 can enable multiple photovoltaic devices 100 to be assembled in a predetermined orientation, which is beneficial to improving the assembly efficiency of the multiple photovoltaic devices 100.

[0082] In some embodiments, the marker 23 includes a coating provided on the surface of the surrounding member 21, and the color of the coating is different from that of the short member 212. Thus, the marker 23 can be distinguished from the surrounding member 21, and the orientation where the photovoltaic device 100 needs to be assembled can be identified more quickly. Exemplarily, the color of the coating can be colors such as red and yellow, and the color of the surrounding member 21 can be colors such as gray and black. Of course, the marker 23 can also be a bump, a number or other markings.

[0083] Please refer to Figure 14 , in some embodiments, the connecting member 22 includes a connecting portion 221 and a plugging portion 222 connected to the connecting portion 221. The surrounding member 21 is provided with a plugging hole 210, and the plugging portion 222 is plugged into the plugging hole 210, and the connecting portion 221 is butted against the surrounding member 21. Thus, the cooperation between the plugging hole 210 and the plugging portion 222 enables the connecting member 22 and the surrounding member 21 to be easily plugged together.

[0084] In some embodiments, the plugging hole 210 extends along the length direction of the surrounding member 21. Optionally, the plugging hole 210 can penetrate through both ends of the surrounding member 21 along the length direction of the surrounding member 21. Thus, the plugging hole 210 can reduce the weight of the surrounding member 21, thereby reducing the weight of the frame 20, which is beneficial to the transportation of the photovoltaic device 100.

[0085] Please refer to Figure 14 , in some embodiments, a threaded hole 223 is provided on the insertion part 222, and a through hole 213 is provided on the surrounding part 21. The surrounding part 21 and the insertion part 222 are fixed by screwing a threaded fastener through the through hole 213 and the threaded hole 223. In this way, the surrounding part 21 and the connecting part 221 are connected more stably, reducing the risk of the frame 20 coming loose.

[0086] Please refer to Figure 14 , in some embodiments, the frame 20 is provided with a mounting groove 24 spaced from the insertion hole 210. The notch of the mounting groove 24 faces away from the insertion hole 210. The mounting groove 24 extends along the frame 20 and penetrates through the surrounding part 21 and the connecting part 221. The mounting groove 24 is used for mounting the photovoltaic panel 10. In this way, the edge of the photovoltaic panel 10 can be embedded in the mounting groove 24, making the connection between the frame 20 and the photovoltaic panel 10 more stable.

[0087] In one example, during the assembly process of the photovoltaic device 100, the surrounding part 21 and the connecting part 22 can be sequentially clamped on the edge of the photovoltaic panel 10 through the mounting groove 24, and then the surrounding part 21 and the connecting part 22 are locked with screws, so that the structure of the frame 20 is stable. Finally, glue is injected into the mounting groove 24 to bond the frame 20 and the photovoltaic panel 10 with the glue, improving the stability of the photovoltaic device 100.

[0088] Please refer to Figure 2 and Figure 14 , in some embodiments, the frame 20 is provided with a mounting hole 25 penetrating through the frame 20 in the thickness direction of the photovoltaic panel 10. The mounting hole 25 is used for the pin 300 to pass through so that the pin 300 is inserted under the bearing surface. In this way, the mounting hole 25 can make the photovoltaic device 100 installed stably, keep the position of the photovoltaic device 100 stable, and is beneficial to improving the power generation efficiency of the photovoltaic device 100. Specifically, after the photovoltaic device 1000 is unfolded, the pin 300 can be used to pass through the mounting hole 25 and inserted under the bearing surface, so that the position of the photovoltaic device 1000 is kept stable.

[0089] In some embodiments, the mounting hole 25 is provided at the corner part of the frame 20. In this way, the mounting hole 25 is located at the edge part of the frame 20, which can improve the wind resistance of the photovoltaic device 100 and thus improve the stability after installation.

[0090] Please refer to Figure 12, in some embodiments, mounting holes 25 are provided at each corner portion of the frame 20. In this way, the frame 20 has better structural consistency, which is beneficial to the production and manufacturing of the frame 20. Specifically, the mounting holes 25 penetrate through the connecting member 22, or rather, the connecting member 22 is provided with mounting holes 25 that penetrate through the connecting member 22 along the thickness direction of the photovoltaic panel 10. Exemplarily, the mounting holes 25 penetrate through the connecting portion 221. After the installation of the photovoltaic device 100, the first photovoltaic device 100 and the last photovoltaic device 100 pass a bolt 300 through the mounting holes 25 so that the bolt 300 is inserted under the bearing surface. It should be noted that among the first photovoltaic device 100 and the last photovoltaic device 100, the mounting holes 25 away from the bearing surface are not inserted with bolts 300.

[0091] As mentioned above, on the same photovoltaic device 100, the junction box 30 may include a first junction box 31 and a second junction box 32. Please refer again to Figure 6 and Figure 7 , in one embodiment, the first junction box 31 is connected with a cable 33, the second junction box 32 is provided with an insertion interface 321, and the connector at one end of the cable 33 is adapted to be inserted into the insertion interface 321. Or rather, one end of the cable 33 is fixed on the first junction box 31, the second junction box 32 is provided with an insertion interface 321, and among two adjacent photovoltaic devices 100, the connector at the other end of the cable 33 on one of the photovoltaic devices 100 is inserted into the insertion interface 321 of the second junction box 32 of the other photovoltaic device 100. For this reason, among 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 the cable 33, which is beneficial to electrically connecting the two photovoltaic devices 100.

[0092] Specifically, please refer to Figures 10 - 11 , in one embodiment, the second junction box 32 includes a box body 321, a box cover 322 and a wiring base 323. The interior of the box body 321 is provided with a storage space 3211, the end of the box body 321 is provided with an insertion interface 3212 communicating with the storage space 3211, the top of the box body 321 is provided with an opening 3213 spaced from the insertion interface 3212 and communicating with the storage space 3211, the box cover 322 seals the opening 3213, the wiring base 323 is arranged in the storage space 3211 and partially located between the opening 3213 and the insertion interface 3212, and among two adjacent photovoltaic devices 100, the connector at the other end of the cable on one of the photovoltaic devices 100 is inserted into the insertion interface 3212 of the second junction box 32 of the other photovoltaic device 100 and is plugged with the wiring base 323.

[0093] Thus, an opening 3213, which is spaced apart from the insertion interface 3212 and communicates with the storage space 3211, is provided at the top of the box body 321. The wiring base 323 is arranged in the storage space 3211 and partially located between the opening 3213 and the insertion interface 3212. This not only makes it easy to install the wiring base 323 into the storage space 3211, but also enables the peripheral surface of the storage space 3211 near the insertion interface 3212 to be a closed-loop surface, which is beneficial to improving the waterproof performance of the joint between the wiring base 323 and the cable.

[0094] Please refer to Figures 10 - 11 , in some embodiments, a limiting rib 3214 is provided on the inner wall of the storage space 3211, and a limiting groove 3231 is provided on the wiring base 323. The limiting rib 3214 is snap-fitted in the limiting groove 3231 to restrict the normal movement of the wiring base 323 along the insertion interface 3212. In this way, the joint of the cable 33 and the wiring base 323 can be accurately plugged together, improving the connection stability between the joint of the cable 33 and the wiring base 323. The normal direction of the insertion interface 3212 is the insertion direction of the joint of the cable.

[0095] In some embodiments, when multiple photovoltaic devices 100 are disassembled, the joint of the cable 33 can be plugged into an external device. That is to say, when a single photovoltaic device 100 is used alone, the photovoltaic device 100 can output electrical energy through the cable 33, thus facilitating the use of a single photovoltaic device 100.

[0096] Please refer to Figure 6 and Figure 7 , in some embodiments, the first cylindrical portion 40 is provided on one side of the light-transmitting cover plate 13. Since the junction box 30 is provided on the light-transmitting cover plate 13, by providing the first cylindrical portion 40 on one side of the light-transmitting cover plate 13, when two photovoltaic devices 100 are stacked, the first cylindrical portion 40 forms a receiving space 110 for accommodating junction boxes 30 such as the first junction box 31 and the second junction box 32 between the two photovoltaic devices 100. The first cylindrical portions 40 of two adjacent photovoltaic devices 100 abut against each other.

[0097] Specifically, the first cylindrical portion 40 can be provided on the frame 20, which makes it easier to install the first cylindrical portion 40. Further, the first cylindrical portion 40 is provided at the corner portion of the frame 20. As mentioned above, the connecting member 22 forms the corner portion of the frame 20. Therefore, the first cylindrical portion 40 can be provided on the connecting member 22. For example, the first cylindrical portion 40 can be integrally formed with the connecting member 22.

[0098] In some embodiments, the number of the first cylindrical portions 40 is plural, and the plural first cylindrical portions 40 are arranged at intervals along the circumferential direction of the photovoltaic panel 10. Thus, the plural first cylindrical portions 40 can provide multi-point support for two adjacent photovoltaic devices 100, which is beneficial to keeping the shape of the accommodation space 110 formed between the two adjacent photovoltaic devices 100 stable, thereby reducing the interference with the first junction box 31 and the second junction box 32.

[0099] Specifically, in some embodiments, a first cylindrical portion 40 extends from one side of the connection portion 221, and the first cylindrical portion 40 communicates with the mounting hole 25.

[0100] Please refer to Figure 6 and Figure 7 , in some embodiments, the first cylindrical portion 40 is a magnetic member. Thus, two adjacent photovoltaic devices 100 can be attracted to each other through the first cylindrical portion 40, which is beneficial to keeping the positions of the photovoltaic devices 100 stable.

[0101] Please refer to Figures 6 - 8 , in some embodiments, a second cylindrical portion 50 is disposed on one side of the substrate 11, and the second cylindrical portion 50 is aligned with the first cylindrical portion 40 along the thickness direction of the photovoltaic panel 10. For example, the first cylindrical portion 40 and the second cylindrical portion 50 are respectively disposed on two sides of the frame 20 along the thickness direction of the photovoltaic panel 10. The second cylindrical portion 50 can provide support for two adjacent photovoltaic devices 100, so that after the photovoltaic device 1000 is in a folded state, the states of two adjacent photovoltaic devices 100 are more stable.

[0102] As Figure 14 shown, in some embodiments, the second cylindrical portion 50 is disposed on the frame 20. More specifically, the second cylindrical portion 50 can be disposed on the connecting member 22. The second cylindrical portion 50 can also be a magnetic member. Thus, two adjacent photovoltaic devices 100 can be attracted to each other through the second cylindrical portion 50, which is beneficial to keeping the positions of the photovoltaic devices 100 stable.

[0103] Specifically, in some embodiments, a second cylindrical portion 50 extends from the other side of the connection portion 221, and the second cylindrical portion 50 communicates with the mounting hole 25 described above.

[0104] As Figure 14 shown, in some embodiments, the mounting hole 25 penetrates through the first cylindrical portion 40 and the second cylindrical portion 50. This makes the cooperation among the first cylindrical portion 40, the second cylindrical portion 50 and the mounting hole 25 more compact.

[0105] Please refer to Figure 15, in some embodiments, the adapter 200 is connected to the frames 20 of two adjacent photovoltaic devices 100, so that the 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 the two adjacent photovoltaic devices 100 can be rotatably connected through the adapter 200.

[0106] In one example, as discussed above, the long member 211 forms the long edge of the frame 20, the short member 212 forms the short edge of the frame 20, and the connecting member 22 connects the adjacent long member 211 and short member 212. Therefore, the frame 20 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 200 can be connected to the long edge of the frame 20, or rather, the adapter 200 can be connected to the long member 211 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.

[0107] Please refer to Figure 15 , for convenience of description, two adjacent photovoltaic devices 100 are respectively the first photovoltaic device 101 and the 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 through the rotating shaft 203. The first rotating member 201 is fixed on the first photovoltaic device 101, and the second rotating member 202 is fixed on the second photovoltaic device 102. Specifically, the first rotating member 201 is fixed on the frame 20 of the first photovoltaic device 101, and the second rotating member 202 is fixed on the frame 20 of the second photovoltaic device 102.

[0108] Or rather, the first rotating member 201 is fixed on the frame 20 of one of the two adjacent photovoltaic devices 100, and the second rotating member 202 is fixed on 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.

[0109] In some embodiments, when the photovoltaic device 1000 is in the unfolded state, the first rotating member 201 abuts against one side of the second photovoltaic device 102, and the second rotating member 202 abuts against one side of the first photovoltaic device 101, so as to form a predetermined angle between the two adjacent photovoltaic devices 100. In this way, it is convenient to store and transport the photovoltaic device 1000 when it is folded. When the photovoltaic device 1000 is in the unfolded state, the angle between the two adjacent photovoltaic devices 100 is limited to a predetermined angle by the adapter 200, so that the state of the photovoltaic device 1000 is kept stable, and the light receiving area of the photovoltaic device 100 is increased, which is beneficial to the photovoltaic device 1000 to convert solar energy into electric energy.

[0110] In some embodiments, when the photovoltaic device 1000 is in the deployed state, the frames 20 of the first photovoltaic device 101 are in contact with each other to form a predetermined angle α between the first photovoltaic device 101 and the second photovoltaic device 102.

[0111] In this way, the first photovoltaic device 101 and the second photovoltaic device 102 can be limited by their own frames 20 to form a predetermined angle α, which can simplify the structure of the adapter 200 and make the deployed state of the first photovoltaic device 101 and the second photovoltaic device 102 stable, facilitating the conversion of solar energy into light energy by the photovoltaic device 1000.

[0112] In some embodiments, to facilitate the use of the photovoltaic device 1000, the first rotating member 201 and the second rotating member 202 are rotatably and detachably connected, enabling the photovoltaic device 100 to be disassembled, which is beneficial for the individual use or transportation of the photovoltaic device 100.

[0113] Please refer to Figures 15 - 18 , in some embodiments, the first rotating member 201 is provided with a first transfer hole 2011, the second rotating member 202 is provided with a second transfer hole 2021 coaxially arranged with the first transfer hole 2011, and the rotating shaft 203 is movably inserted into the first transfer hole 2011 and the second transfer hole 2021. In this way, the first transfer hole 2011 and the second transfer hole 2021 are beneficial for the installation of the rotating shaft 203, thereby enabling the first rotating member 201 to be rotatably connected to the second rotating member 202.

[0114] Please refer to Figures 15 - 18 , in some embodiments, the first rotating member 201 is provided with a card slot 2012, the first transfer hole 2011 communicates with the card slot 2012, the number of the first transfer holes 2011 is two, the two first transfer holes 2011 are respectively located on both sides of the card slot 2012, the number of the rotating shafts 203 is two, the two rotating shafts 203 are arranged at intervals in the second transfer hole 2021, a part of the second adapter is received in the card slot 2012, and the rotating shaft 203 extends out of the second transfer hole 2021 and is inserted into a corresponding first transfer hole 2011. In this way, a part of the second adapter is received in the card slot 2012, and the rotating shaft 203 extends out of the second transfer hole 2021 and is inserted into a corresponding first transfer hole 2011, which makes the structure of the adapter 200 more compact and enables the first rotating member 201 to rotate more smoothly with the second rotating member 202.

[0115] Please refer to Figures 15 - 18, in some embodiments, the adapter 200 includes a handle 204 connected to the rotating shaft 203. The second rotating member 202 is provided with an avoidance groove 2022 for the handle 204 to move. The avoidance groove 2022 communicates with the second transfer hole 2021 and extends along the axial direction of the second transfer hole 2021. In this way, the handle 204 facilitates the operation of the adapter 200 to move the rotating shaft 203, so that the first rotating member 201 and the second rotating member 202 can be disassembled and assembled together, which is beneficial to the use of the photovoltaic device 100. Specifically, the handle 204 can be cylindrical, and one end of the handle 204 can be inserted into the rotating shaft 203, so that the connection between the handle 204 and the rotating shaft 203 is stable. The axial direction of the handle 204 is substantially perpendicular to the axial direction of the rotating shaft 203, so that the handle 204 can more easily drive the rotating shaft 203 to move.

[0116] Please refer to Figures 15 - 18 , in some embodiments, the adapter 200 further includes an elastic member 205 disposed in the second transfer hole 2021. The elastic member 205 connects the two rotating shafts 203. When an external force is applied to the handle 204, the two rotating shafts 203 approach each other and retract into the second transfer hole 2021 and the elastic member 205 is compressed. After the external force is unloaded, the elastic member 205 applies an elastic force to the two rotating shafts 203 to make the rotating shafts 203 extend out of the second transfer hole 2021. In this way, the elastic member 205 makes the assembly of the first rotating member 201 and the second rotating member 202 more convenient, and can keep the rotating shafts 203 in the state of being inserted into the first transfer hole 2011 and the second transfer hole 2021 at the same time, which is beneficial to the first rotating member 201 and the second rotating member 202 rotating more stably and smoothly.

[0117] Specifically, the elastic member 205 is, for example, an elastic element such as a spiral spring. It can be understood that since the rotating shaft 203 is connected to the handle 204, under the limiting action of the handle 204 and the groove wall of the avoidance groove 2022, at least part of the rotating shaft 203 remains in the second transfer hole 2021.

[0118] In one example, when two photovoltaic devices 100 are assembled, the two handles 204 can be pinched by hand, that is, the two handles 204 are brought closer to each other to make the two rotating shafts 203 retract into the second transfer hole 2021. After the first rotating hole 2011 is aligned with the second transfer hole 2021, release the hand. Under the action of the elastic member 205, the rotating shafts 203 extend from the second transfer hole 2021 into the first transfer hole 2011, so that the two photovoltaic devices 100 are assembled together.

[0119] Please refer to Figures 15 - 18, in some embodiments, when the photovoltaic device 1000 is in the deployed state, the first rotating member 201 abuts against the frame 20 of the second photovoltaic device 102, and the second rotating member 202 abuts against the frame 20 of the first photovoltaic device 101, so as to form a predetermined angle α between the first photovoltaic device 101 and the second photovoltaic device 102. In this way, the first rotating member 201 and the second rotating member 202 can limit the angle between the first photovoltaic device 101 and the second photovoltaic device 102, which is beneficial to maintaining the stability of the states of the first photovoltaic device 101 and the second photovoltaic device 102.

[0120] Please refer to Figures 15 - 18 , in some embodiments, the first rotating member 201 includes a first adapter portion 2013, a first mounting portion 2014, and a first abutting portion 2015. The first mounting portion 2014 and the first abutting portion 2015 are both connected to the first adapter portion 2013. The first mounting portion 2014 is fixedly connected to the frame 20 of the first photovoltaic device 101. The first mounting portion 2014 is provided with a first adapter hole 2011. The first abutting portion 2015 abuts against the frame 20 of the second photovoltaic device 102 when the first photovoltaic device 101 and the second photovoltaic device 102 are deployed;

[0121] The second rotating member 202 includes a second adapter portion 2023, a second mounting portion 2024, and a second abutting portion 2025. The second mounting portion 2024 and the second abutting portion 2025 are both connected to the second adapter portion 2023. The second mounting portion 2024 is fixedly connected to the frame 20 of the second photovoltaic device 102. The second mounting portion 2024 is provided with a second adapter hole 2021. The second abutting portion 2025 abuts against the frame 20 of the first photovoltaic device 101 when the first photovoltaic device 101 and the second photovoltaic device 102 are deployed. In this way, the first abutting portion 2015 and the second abutting portion 2025 can limit the angle between the first photovoltaic device 101 and the second photovoltaic device 102, and the first mounting portion 2014 and the second mounting portion 2024 can stably connect the first rotating member 201 and the second rotating member 202 to the corresponding frame 20.

[0122] Specifically, the first mounting portion 2014 and the second mounting portion 2024 can be in a sheet shape, and the first mounting portion 2014 and the second mounting portion 2024 can be fixedly connected to the corresponding frame 20 through fasteners such as screws.

[0123] In some embodiments, the first rotating member 201 and the second rotating member 202 are connected to the long edges of the corresponding frame 20. In this way, the center of gravity of the photovoltaic device 1000 in the folded state is lower, making transportation more convenient. For example, the first mounting portion 2014 of the first rotating member 201 is fixedly connected to the long member 211 of the frame 20 of the first photovoltaic device 101, and the second mounting portion 2024 of the second rotating member 202 is fixedly connected to the long member 211 of the frame 20 of the second photovoltaic device 102.

[0124] In one embodiment, the photovoltaic device 100 includes a photovoltaic panel 10, a junction box 30, and a first cylindrical portion 40. The photovoltaic panel 10 includes 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. The junction box 30 is disposed on the light-transmitting cover plate 13. The first cylindrical portion 40 is disposed on one side of the light-transmitting cover plate 13, and the first cylindrical portion 40 is used to form an accommodation space for accommodating the junction box 30 between two stacked photovoltaic devices 100.

[0125] In this way, the junction box 30 is disposed on the light-transmitting cover plate 13, making the photovoltaic device 100 convenient to use during operation without the need to wire from the backlight side of the photovoltaic device 100. Additionally, the first cylindrical portion 40 forms an accommodation space for accommodating the junction box 30 between two photovoltaic devices 100, which can reduce interference between the junction box 30 and other photovoltaic devices 100 and improve the service life of the photovoltaic device 100.

[0126] In some embodiments, the photovoltaic device 100 includes a photovoltaic panel 10 and a frame 20. The frame 20 wraps the edges of the photovoltaic panel 10. The frame 20 includes a plurality of connecting members 22 provided at the corner portions of the frame 20, and the connecting members 22 are provided with mounting holes 25 that penetrate the connecting members 22 in the thickness direction of the photovoltaic panel 10. In this way, the mounting holes 25 can cooperate with pins to ensure stable installation of the photovoltaic device 100, keep the position of the photovoltaic device 100 stable, and contribute to improving the power generation efficiency of the photovoltaic device 100.

[0127] In the description of this specification, the description with reference to terms such as "one embodiment", "certain embodiments", "schematic 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 representations of the above terms do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0128] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A photovoltaic device, characterized in that, Comprising: A photovoltaic device; A temperature regulating film, which covers the surface of the photovoltaic device. The temperature regulating film has a light-transmitting state and a radiation-reflecting state. In the light-transmitting state, light can pass through the temperature regulating film to the photovoltaic device. In the radiation-reflecting state, the photovoltaic device can dissipate heat through the temperature regulating film.

2. The photovoltaic device according to claim 1, characterized in that, The photovoltaic device further comprises: A temperature sensor, which is connected to the temperature regulating film. The temperature regulating film switches to the radiation-reflecting state when the temperature sensor detects that the temperature is greater than or equal to a preset threshold, and switches to the light-transmitting state when the temperature is less than the preset threshold.

3. The photovoltaic device according to claim 2, wherein, The temperature sensor is arranged on the backlight side of the photovoltaic device.

4. The photovoltaic device according to claim 1, characterized in that The temperature regulating film is made of a radiative cooling material.

5. The photovoltaic device according to claim 1, characterized in that, The photovoltaic device includes a photovoltaic panel and a frame. The temperature regulating film is attached to the photovoltaic panel, and the frame wraps the edges of the photovoltaic panel and the temperature regulating film.

6. The photovoltaic device according to claim 5, wherein, The photovoltaic panel includes a substrate, solar cells and a light-transmitting cover plate. The solar cells are arranged on the substrate, the light-transmitting cover plate covers the side of the solar cells facing away from the substrate, and the temperature regulating film covers the side of the light-transmitting cover plate facing away from the solar cells.

7. The photovoltaic device according to claim 5, characterized in that, The frame includes a plurality of enclosing members and a plurality of connecting members. The enclosing members and the connecting members are connected end to end to form a ring, and the connecting members are detachably inserted into two adjacent enclosing members.

8. The photovoltaic device according to claim 7, characterized in that, The enclosing members are in a straight strip shape, and the connecting members form the corner parts of the frame.

9. The photovoltaic device according to claim 8, characterized in that, The enclosing members include long members and short members. The long members form the long edges of the frame, the short members form the short edges of the frame, and the connecting members connect the adjacent long members and short members.

10. The photovoltaic device according to claim 7, characterized in that, The connecting members include a connecting portion and a plugging portion connected to the connecting portion. The enclosing members are provided with plugging holes, and the plugging portion is inserted into the plugging holes, and the connecting portion is docked with the enclosing members.

Images