Photovoltaic device

Abstract

The photovoltaic device comprises a photovoltaic module and at least one inverter, the photovoltaic module is configured to be of a wave-shaped structure, the photovoltaic module comprises at least one wave crest part and at least one wave trough part, the wave crest parts and the wave trough parts are alternately arranged, and the photovoltaic module is provided with a light facing surface and a backlight surface which are opposite to each other; the inverter is arranged on the backlight surface and corresponds to the wave crest part, and the inverter is electrically connected with the photovoltaic module. The inverter can convert direct current generated by the photovoltaic device into alternating current for subsequent circuits to use. And the inverter is arranged on the backlight surface, so that the photovoltaic module can be prevented from being shielded by the inverter. The inverter is arranged corresponding to the wave crest part, and the two adjacent wave trough parts can shield the inverter, thereby guaranteeing that the inverter is not liable to be observed by naked eyes, and guaranteeing the appearance consistency of the photovoltaic device. And the wiring length between the inverter and the photovoltaic module can be reduced, and the loss caused by current transmission is reduced. The integrated structure of the photovoltaic module and the inverter can reduce the difficulty of field installation.

Description

Technical Field

[0001] The present application relates to the technical field of photovoltaic equipment, and in particular to a photovoltaic device. Background Art

[0002] As traditional fossil energy causes greenhouse effect and other issues, the call for low-carbon and environmental protection is becoming stronger. In this context, the pursuit of clean energy is gradually increasing. Compared with traditional fossil energy, solar energy, as a high-quality clean energy, is favored by people because it is easy to obtain and does not produce pollutants.

[0003] Solar photovoltaic devices are mostly installed on the roof of the house so that the photovoltaic device can obtain sufficient sunlight. Existing photovoltaic devices convert DC power, which is commonly used in household appliances such as AC power. DC power needs to be converted into AC power through an inverter for subsequent circuit use. However, wiring is required between the inverter and the photovoltaic device. Complex wiring may increase the difficulty of installing the photovoltaic device, and also affect the safety of use and subsequent maintenance of the photovoltaic device. Utility Model Content

[0004] The embodiments of the present application provide a photovoltaic device to at least partially improve the above technical problems.

[0005] An embodiment of the present application provides a photovoltaic device, including a photovoltaic module and at least one inverter. The photovoltaic module is configured as a wave-shaped structure. The photovoltaic module includes at least one crest portion and at least one trough portion. The crest portions and the trough portions are alternately arranged. The photovoltaic module has a light-facing surface and a backlight surface opposite to each other. The inverter is arranged on the backlight surface and corresponds to the crest portion. The inverter is electrically connected to the photovoltaic module.

[0006] In one embodiment, a photovoltaic module includes a front plate, a rear plate, and a plurality of solar cells disposed between the front plate and the rear plate, one or more solar cells are electrically connected to an inverter, and the front plate, the rear plate, and the one or more solar cells are configured as a wavy structure.

[0007] In one embodiment, the photovoltaic device includes a plurality of photovoltaic sheets and a plurality of shingles, each photovoltaic sheet and shingle are configured as an arc-shaped structure, a plurality of photovoltaic sheets are arranged side by side to form a crest portion, each photovoltaic sheet includes at least one solar cell, a plurality of shingles are arranged side by side to form a trough portion and are arranged alternately with the plurality of photovoltaic sheets, and two adjacent photovoltaic sheets are overlapped on the shingle located between the two photovoltaic sheets.

[0008] In one embodiment, the inverter is provided with a plurality of input terminals, the plurality of input terminals are arranged in parallel, and each input terminal is used for being electrically connected to a cell of a photovoltaic module.

[0009] In one embodiment, each input terminal is connected in series with a plurality of solar cells.

[0010] In one embodiment, a plurality of battery cells connected in series at each input end are arranged side by side.

[0011] In one embodiment, the inverter is provided with 8 input terminals, each of which is connected in series with 8 battery cells.

[0012] In one embodiment, the inverter includes a top surface and a bottom surface facing each other, the top surface is configured as a curved surface that matches the crest portion and fits the photovoltaic module, and a plurality of input terminals are arranged on the bottom surface.

[0013] In one embodiment, the inverter is disposed at the geometric center of the photovoltaic device.

[0014] In one implementation, the inverter further includes an inverter circuit and a controller, and the inverter circuit is electrically connected to the controller and the input terminal.

[0015] The photovoltaic device provided in the embodiment of the present application can have a larger light-receiving area in a certain installation space with a wavy structure photovoltaic device, thereby improving the conversion efficiency of the photovoltaic device. At the same time, the wavy structure photovoltaic device can be installed on a wavy tile roof to improve the installation effect of the photovoltaic device. The inverter can convert the generated direct current into alternating current for use by subsequent circuits. The inverter is arranged on the backlight surface to prevent the inverter from blocking the photovoltaic module. The inverter is arranged corresponding to the crest part, and the two adjacent trough parts can block the inverter, ensuring that the inverter is not easily observed by the naked eye, thereby ensuring the consistency of the appearance of the photovoltaic device. The wiring length between the inverter and the photovoltaic module can also be reduced to reduce the loss caused by current transmission. The integrated structure of the photovoltaic module and the inverter can reduce the difficulty of on-site installation and ensure installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the implementation modes of the present application, the drawings required for use in the description of the implementation modes will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic diagram of the structure of a photovoltaic device proposed in an embodiment of the present application;

[0018] Figure 2 A schematic diagram of the structure of a photovoltaic module proposed in an embodiment of the present application;

[0019] Figure 3 A schematic diagram of the structure of a photovoltaic panel and a shingle proposed in an embodiment of the present application;

[0020] Figure 4A schematic diagram of the structure of another photovoltaic device proposed in an embodiment of the present application;

[0021] Figure 5 A schematic diagram of the structure of an inverter proposed in an embodiment of the present application;

[0022] Figure 6 A schematic diagram of the structure of a battery cell proposed in an embodiment of the present application;

[0023] Figure 7 A schematic diagram of the structure of another battery cell proposed in an embodiment of the present application;

[0024] Figure 8 A schematic diagram of the structure of another photovoltaic device proposed in an embodiment of the present application;

[0025] Fig. 9 This is a schematic diagram of the structure of another photovoltaic device proposed in an embodiment of the present application.

[0026] Figure numerals: photovoltaic device 100, photovoltaic component 10, crest portion 11, trough portion 12, light-facing surface 13, backlight surface 14, front plate 15, rear plate 16, battery cell 17, junction box 171, first terminal 172, second terminal 173, connecting terminal 174, first cable 175, first sub-cable 1751, second sub-cable 1752, second cable 176, third sub-cable 1761, fourth sub-cable 1762, interface 178, electrical connector 177, inverter 20, input end 21, top surface 22, bottom surface 23, photovoltaic cell 30, and shingle 40. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the implementation mode of the present application. Obviously, the described implementation mode is only a part of the implementation mode of the present application, not all the implementation modes. Based on the implementation mode in the present application, all other implementation modes obtained by those skilled in the art without making creative work are within the scope of protection of the present application.

[0028] In this application, unless otherwise clearly specified or limited, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements, or it can be only surface contact, or surface contact connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] In addition, the terms "first", "second", etc. are only used to distinguish descriptions and cannot be understood as specific or special structures. The descriptions of the terms "some embodiments", "other embodiments", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In the present application, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0030] Example

[0031] The present application embodiment provides a photovoltaic device 100, see Figure 1 The photovoltaic device 100 may include a photovoltaic module 10 and an inverter 20. The photovoltaic module 10 may be used to capture sunlight and convert light energy into current output. The output current may be direct current. The inverter 20 is electrically connected to the photovoltaic module 10. The inverter 20 may convert direct current into alternating current for use in subsequent circuits.

[0032] In this embodiment, the photovoltaic module 10 can be configured as a wavy structure, and the photovoltaic module 10 includes at least one crest portion 11 and at least one trough portion 12, and the crest portion 11 and the trough portion 12 are arranged alternately. The wavy structure can improve the strength and stability of the photovoltaic module 10, and the wavy structure can enable the photovoltaic module 10 to adapt to the installation environment, such as a tile roof, and the tiles of the roof are also wavy. The photovoltaic module 10 with the same structure can overlap with the tiles to facilitate the connection between the two. In addition, the two have the same structure, which can make the photovoltaic device 100 more beautiful in terms of integrity.

[0033] For more details, please refer to Figure 1, the size of the photovoltaic assembly 10 can be selected and designed according to specific implementation requirements, such as the height difference between the crest portion 11 and the trough portion 12, the number, the spacing between adjacent crest portions 11 and trough portions 12, and the curvature radius of the crest portion 11 and the trough portion 12. Exemplarily, the curvature radius of the crest portion 11 and the curvature radius of the trough portion 12 are both 25mm-200mm. It can avoid that the curvature radius of the crest portion 11 and the trough portion 12 is too large, which reduces the carrying capacity of the photovoltaic assembly 10 and limits the weight of other components in the photovoltaic device 100. It can also avoid that the curvature radius of the crest portion 11 and the trough portion 12 is too small, which increases the weight of the photovoltaic assembly 10 and thus increases the difficulty of installing the photovoltaic assembly 10. Further, due to factors such as the installation environment, the curvature radius of the crest portion 11 and the trough portion 12 can be the same or different, so that the photovoltaic assembly 10 can adapt to more installation structures of different shapes and improve the wide use of the photovoltaic device 100.

[0034] Also, please continue reading Figure 1 The photovoltaic component 10 may include a light-facing surface 13 and a backlight surface 14 facing each other. Specifically, the light-facing surface 13 may be arranged toward the sun so that the photovoltaic component 10 can collect more light energy and convert the collected light energy into more electrical energy. The backlight surface 14 may be arranged opposite to the light-receiving surface.

[0035] In a more specific embodiment, see Figure 1 as well as Figure 2 The photovoltaic module 10 includes a front plate 15, a rear plate 16 and one or more cells 17. The cells 17 are arranged between the front plate 15 and the rear plate 16. The light-facing surface 13 is formed on the surface of the front plate 15 away from the cells 17. The surface of the cells 17 close to the front plate 15 can be configured as a light-receiving surface. Light can be transmitted through the front plate 15 and propagated to the light-receiving surface, and converted into electrical energy by the cells 17. The front plate 15 and the rear plate 16 are respectively attached to the opposite sides of the plurality of cells 17. Further, the front plate 15 and the rear plate 16 can also be connected to the cells 17 as a whole by bonding with an adhesive layer, thereby improving the protection performance of the cells 17 and improving the service life of the photovoltaic device 100. Among them, the number of cells 17 can be 1, 2, 3..., or even more, which cannot be limited in this embodiment and can be set according to the size of the specific photovoltaic module 10 and the size and arrangement of the cells 17. Exemplarily, when there are multiple battery cells 17 , the multiple battery cells 17 may be arranged at intervals, and the multiple battery cells 17 may be distributed along a predetermined direction to facilitate installation and maintenance.

[0036] The photovoltaic device 100 may also include a first adhesive layer and a second adhesive layer, the first adhesive layer may be a polyolefin (POE) layer or an ethylene-vinyl acetate copolymer (EVA) layer, etc., and the second adhesive layer may also be a polyolefin layer or an ethylene-vinyl acetate copolymer layer, etc. Due to factors such as implementation requirements, the materials, dimensions, etc. of the first adhesive layer and the second adhesive layer may be the same or different. The polyolefin layer has high low temperature resistance, high chemical stability, high oil resistance and weather resistance, and is easy to be processed into various shapes and sizes. The polyolefin layer can improve the protection ability of the photovoltaic device 100 and prevent water vapor from entering from the gap between two adjacent layers. The ethylene-vinyl acetate copolymer layer has good softness, elasticity and low temperature resistance, and has good chemical stability and weather resistance. The ethylene-vinyl acetate copolymer layer also has good processing performance and is easy to hot melt connection and solvent bonding. It is selected and designed according to the specific implementation scenario and use requirements, and this embodiment is not limited. The first adhesive layer is connected between the front plate 15 and the light-facing surface 13 of one or more cells 17. The first adhesive layer can be melted by heat, and when solidified later, the front plate 15 and the one or more cells 17 can be connected to each other, so that the front plate 15 and the cells 17 are integrated. The second adhesive layer is connected between the rear plate 16 and the backlight surface of one or more cells 17. The second adhesive layer can be melted by heat, and when solidified later, the rear plate 16 and the cells 17 can be connected to each other, so that the rear plate 16 and the cells 17 are integrated. The integrity of the photovoltaic device 100 is ensured, and the protection capability and safety of the photovoltaic device 100 are improved.

[0037] To facilitate the installation of the photovoltaic device 100, so that the photovoltaic device 100 can be better integrated into the installation environment. Figure 2 In this embodiment, the front plate 15, the rear plate 16 and one or more cells 17 are all configured as a wavy structure. The wavy structure can improve the strength and stability of the photovoltaic device 100, and can also make the mounting plate adapt to the installation environment. In addition, the cell 17 can also receive more sunlight to improve the conversion efficiency of the photovoltaic device 100.

[0038] In another embodiment, see Figure 3The photovoltaic device 100 may include a plurality of photovoltaic sheets 30 and a plurality of shingles 40. Each photovoltaic sheet 30 and shingle 40 is configured as an arc structure. The design of this arc structure can effectively increase the light receiving area of ​​the photovoltaic device 100, thereby improving the output efficiency of the photovoltaic device 100. In addition, the photovoltaic sheet 30 with an arc structure has a higher structural strength, which improves the safety of the use of the photovoltaic device 100. A plurality of photovoltaic sheets 30 are arranged side by side to form a plurality of crests 11. Each photovoltaic sheet 30 includes at least one cell sheet 17. A plurality of shingles 40 are arranged side by side to form a trough 12 and are arranged alternately with a plurality of photovoltaic sheets 30. A plurality of shingles 40 are arranged side by side to form a trough 12 and are arranged alternately with a plurality of photovoltaic sheets 30. The photovoltaic device 100 can maximize the use of light energy within a limited area. Two adjacent photovoltaic sheets 30 are overlapped on the shingle 40 located between the two photovoltaic sheets 30. A plurality of photovoltaic sheets 30 are arranged in sequence to form a plurality of continuous crests 11. The number of the tiles 40 can be multiple, and the multiple tiles 40 are arranged in a corresponding direction to form a plurality of continuous troughs 11. The tiles 40 are arranged between two adjacent photovoltaic sheets 30, and then the troughs 11 are arranged between two adjacent peaks 11 to form alternately arranged troughs 11 and peaks 11. This not only increases the stability of the device, but also helps to improve the overall power output. The output power of the photovoltaic device 100 can be increased to meet the needs of a larger scale, which is conducive to improving the stability and reliability of the use of the photovoltaic device 100. The volume of the smallest unit of the photovoltaic device 100 can also be reduced, and it is more convenient to replace or debug the photovoltaic sheet 30.

[0039] In this example, please continue to refer to Figure 1 , the inverter 20 can be arranged on the backlight surface 14 of the photovoltaic module 10, and the inverter 20 will not shield the light-facing surface 13 of the photovoltaic module 10, thereby ensuring the photoelectric conversion efficiency of the photovoltaic module 10. The inverter 20 is arranged corresponding to the crest portion 11. Exemplarily, under a certain volume, the inverter 20 can be placed under the crest portion 11, and the two adjacent trough portions 12 will shield the side of the inverter 20. The inverter 20 can also be configured as a flat structure so that the end of the inverter 20 away from the photovoltaic module 10 does not extend outside the trough portion 12, so that the inverter 20 is not easily observed by the naked eye, thereby ensuring the appearance consistency of the photovoltaic device 100. The integrated inverter 20 and photovoltaic module 10 can save space and are easy to install, thereby improving the protection capability of the inverter 20.

[0040] In one embodiment, the inverter 20 further includes an inverter circuit and a controller, the controller may be a maximum power point tracking (MPPT) controller, and the inverter circuit is electrically connected to the controller and the input terminal 21. Through the inverter circuit, the controller may adjust the output power of the plurality of cells 17 according to different external ambient temperatures, light intensity and other characteristics, so that the entire photovoltaic device 100 always outputs the maximum power, thereby ensuring the conversion efficiency of the photovoltaic device 100.

[0041] Please continue reading Figure 1 , Figure 4 as well as Figure 5 , one or more cells 17 are electrically connected to the inverter 20. For example, the number of cells 17 is multiple, and the multiple cells 17 are arranged at intervals. The multiple cells 17 and the inverter 20 can be arranged in series. The multiple cells 17 are converted into current and transmitted to the inverter 20, and then the direct current is converted into alternating current for output via the inverter 20. In a more specific embodiment, the inverter 20 is provided with multiple input terminals 21, and the multiple input terminals 21 are arranged in parallel. Each input terminal 21 can be used to electrically connect to the cell 17 of the photovoltaic module 10, and each cell 17 only needs to be electrically connected to one input terminal 21, so that the inverter 20 can obtain the current of each cell 17. The multiple input terminals 21 of the inverter 20 enable the photovoltaic device 100 to flexibly configure multiple photovoltaic modules 10. A suitable number of photovoltaic modules 10 can be selected according to actual needs and environmental conditions, and connected to the input terminal 21 of the inverter 20. The parallel arrangement of multiple input terminals 21 can ensure the stability and reliability of the cell 17 of the photovoltaic module 10. Even if one of the photovoltaic modules 10 fails or is shaded, the inverter 20 can still receive power from other photovoltaic modules 10 and continue to provide stable power output. This design improves the reliability and stability of the entire photovoltaic device 100.

[0042] The plurality of battery cells 17 can be divided into a plurality of groups of battery cells 17, each group of battery cells 17 can be electrically connected to an input terminal 21, and the plurality of groups of battery cells 17 can be arranged in a vertical direction (eg Figure 4 The plurality of battery cells 17 in each group can be arranged and distributed in a horizontal direction (such as L1 in FIG. Figure 4 The plurality of cells 17 are arranged in an aligned manner to form a plurality of columns of cells 17. The plurality of cells 17 can then form a photovoltaic matrix, and the plurality of cells 17 are neatly arranged to facilitate debugging and subsequent maintenance.

[0043] It is understandable that multiple groups of cells 17 can also be distributed in the horizontal direction or other directions, and multiple cells 17 in each group can also be distributed in the vertical direction or other directions. This embodiment does not impose any restrictions to ensure that the photovoltaic device 100 can be installed in a variety of installation scenarios.

[0044] In one embodiment, see Figure 4 , each input terminal 21 is connected in series with a plurality of battery cells 17. Further, the plurality of battery cells 17 connected in series with each input terminal 21 are arranged side by side. With this configuration, the inverter 20 can receive power from each battery cell 17 connected in series, and output it as a stable alternating current after integrating it, and can also make the device more compact and efficient. For example, please refer to Figure 4 , the inverter 20 may be provided with 8 input terminals 21, each input terminal 21 being connected in series with 8 cells 17. A single inverter 20 can electrically connect 64 cells 17, and only one inverter 20 is required to provide current conversion for up to 64 cells 17. A more stable power output can be provided, and by connecting a plurality of cells 17 in series at each input terminal 21, the inverter 20 can obtain sufficient power input, thereby providing reliable energy conversion. By connecting a plurality of cells 17 in series, the scale of power conversion can be increased, thereby improving the efficiency of the entire device. Moreover, a plurality of cells 17 connected in series at each input terminal 21 are arranged side by side, which makes the device more compact and efficient. The side-by-side arrangement can reduce space occupancy, making the photovoltaic device 100 more flexible and easy to configure.

[0045] In a more specific embodiment, see Figure 6 Each battery cell 17 may be provided with a junction box 171, and the junction box 171 may include a first terminal 172, a second terminal 173, and a connection terminal 174. Further, the first terminal 172 may be electrically connected to the positive electrode of the battery cell 17, and the second terminal 173 may be electrically connected to the negative electrode of the battery cell 17. For example, please refer to Figure 7 , the input end 21 can be electrically connected to a cell 17 in the photovoltaic module 10. For example, each input end 21 may include a first end and a second end. The first end may be electrically connected to the second terminal 173 of the cell 17 through a first cable 175, and the second end may be electrically connected to the connection terminal 174 of the cell 17 through a second cable 176. The cell 17 is then connected to other cells 17 through the first cable 175 and the second cable 176, and multiple cells 17 are connected in sequence. That is, in multiple cells 17, multiple first terminals 172 and multiple second terminals 173 are connected in sequence through multiple first cables 175, and multiple connection terminals 174 are connected to each other through multiple second cables 176.

[0046] For further information, please refer to Figure 7In two adjacent solar cells 17, the first terminal 172 of one of them and the second terminal 173 of the remaining one can be electrically connected to each other through the first cable 175. The connecting terminals 174 of the two adjacent solar cells 17 are electrically connected to each other through the second cable 176, and the cycle repeats until the last solar cell 17 is connected. The first terminal 172 and the connecting terminal 174 of the last solar cell 17 are electrically connected by the electrical connector 177 to form a loop, so as to realize the electrical connection between the photovoltaic module 10 and the inverter 20.

[0047] Preferably, between two adjacent solar cells 17, the first cable 175 and the second cable 176 can be wrapped in the same insulating sheath to form a connecting cable. Only one connecting cable is needed to connect two solar cells 17, which reduces the number of cables and facilitates cable layout. In addition, the insulating sheath can also improve the protection ability of the cable, reduce the impact of weather conditions such as exposure to the sun and rain on the cable life, and improve the safety of the photovoltaic device 100.

[0048] Also, please continue reading Figure 7 The first cable 175 may include a first sub-cable 1751 and a second sub-cable 1752. The first sub-cable 1751 and the second sub-cable 1752 may be connected to two adjacent solar cells 17 respectively. The first sub-cable 1751 and the second sub-cable 1752 may be connected to each other via an interface 178. The second cable 176 includes a third sub-cable 1761 and a fourth sub-cable 1762. The third sub-cable 1761 and the fourth sub-cable 1762 may be connected to two adjacent connection terminals 174 respectively. The third sub-cable 1761 and the fourth sub-cable 1762 may be connected to each other via an interface 178. The cable connection between the solar cells 17 may be completed by only connecting the interfaces between the two solar cells 17. This is convenient and fast, and has good connectivity, which can improve the safety of the photovoltaic device 100.

[0049] In other embodiments, the shape of the battery cell 17 is different from that of its mounting plane 50. For example, the shape of the battery cell 17 is rectangular, and the mounting plane 50 can be a triangular roof or a trapezoidal roof, etc. This embodiment does not limit the size and shape of the mounting plane 50. To ensure that the photovoltaic device 100 can have a larger light receiving area, so as to ensure the conversion efficiency of the photovoltaic device 100. In this embodiment, the multiple battery cells 17 laid on the mounting plane 50 can be symmetrically arranged relative to the geometric center of the photovoltaic device 100, and the inverter 20 can be arranged at the geometric center of the photovoltaic device 100 to shorten the distance between each group of battery cells 17 and the inverter 20 to avoid excessive current transmission loss. So that the number of multiple groups of battery cells 17 can be the same, thereby ensuring that the voltages of multiple groups of battery cells 17 can be the same. It can avoid that multiple groups of battery cells 17 affect each other through the inverter 20, and ensure the safe use of the inverter 20.

[0050] For example, Figure 8 As shown, the mounting plane 50 is in the shape of a triangle, and the cells 17 are laid on the mounting plane 50 in sequence to form a complete photovoltaic device 100. The cells 17 at the left and right ends of the photovoltaic device 100 are laid to the edge of the mounting plane 50, and the number of cells 17 on the opposite sides of the photovoltaic device 100 is the same, thereby forming multiple circuits with the same voltage. Circuits with the same voltage can share the same controller, which can ensure that multiple cells 17 can be in the maximum power state, and can reduce the number of controllers in the inverter 20, saving costs. Or, as Fig. 9 As shown, the mounting plane 50 is trapezoidal, and the cells 17 are laid on the mounting plane 50 in sequence. The number of cells 17 on the opposite sides of the photovoltaic device 100 is the same, thereby forming multiple lines with the same voltage. The number of controllers in the inverter can also be reduced, ensuring that multiple cells 17 can be in the maximum power state, and reducing costs.

[0051] See also Figure 1 as well as Figure 5 In this embodiment, the inverter 20 includes a top surface 22 and a bottom surface 23. Further, the top surface 22 of the inverter 20 can be the surface of the inverter 20 close to the photovoltaic module 10, and the back surface can be the surface opposite to the top surface 22. The top surface 22 can be configured as a curved surface that matches the crest portion 11, and the backlight surface 14 of the crest portion 11 is correspondingly arranged with the top surface 22. For example, the curvature radius, shape, etc. of the backlight surface 14 of the crest portion 11 and the top surface 22 are arranged correspondingly. The top surface 22 of the inverter 20 can be attached to the second surface of the crest portion 11, and the inverter 20 can be attached to the photovoltaic module 10 by bonding with an adhesive. The inverter 20 and the crest portion 11 can cooperate with each other to provide a larger installation space for the inverter 20. The contact area between the inverter 20 and the photovoltaic module 10 is increased, and the connection stability between the inverter 20 and the photovoltaic module 10 can be improved.

[0052] In one embodiment, multiple input terminals 21 of the inverter 20 are arranged on the bottom surface 23. Compared with the top surface 22 and the side surface, the space of the bottom surface 23 is more sufficient, which is more convenient for the subsequent battery cell 17 to be electrically connected to the input terminal 21. The input terminal 21 will not conflict with the inverter 20, ensuring that the inverter 20 can be smoothly installed on the photovoltaic module 10. It can also avoid direct contact between the input terminal 21 and the surface of the photovoltaic module 10, thereby improving the safety of the use of the photovoltaic module 10. Multiple input terminals 21 can extend out of the bottom surface 23, and multiple battery cells 17 arranged in series can be connected to the output terminal through wires. The wires can extend to the bottom surface 23 of the inverter 20, which can avoid the influence of the cable on the connection between the inverter 20 and the photovoltaic module 10, and ensure the safety of the use of the photovoltaic device 100.

[0053] In the embodiment of the present application, a photovoltaic device 100 is provided. In a certain installation space, the photovoltaic device 100 with a wavy structure can have a larger light receiving area, thereby improving the conversion efficiency of the photovoltaic device 100. At the same time, the photovoltaic device 100 with a wavy structure can be installed on a wavy tile roof, thereby improving the installation effect of the photovoltaic device 100. The inverter 20 can convert the generated direct current into alternating current for use by subsequent circuits. The inverter 20 is arranged on the backlight surface 14, so that the inverter 20 can be prevented from shielding the photovoltaic module 10. The inverter 20 is arranged corresponding to the crest portion 11, and the two adjacent trough portions 12 can shield the inverter 20, thereby ensuring that the inverter 20 is not easily observed by the naked eye, thereby ensuring the appearance consistency of the photovoltaic device 100. The wiring length between the inverter 20 and the photovoltaic module 10 can also be reduced, thereby reducing the loss caused by current transmission. The integrated structure of the photovoltaic module 10 and the inverter 20 can reduce the difficulty of on-site installation and ensure installation efficiency.

[0054] The above implementation modes are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned implementation modes, a person skilled in the art should understand that the technical solutions described in the aforementioned implementation modes can still be modified, or some of the technical features can be replaced by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various implementation modes of the present application, and should all be included in the protection scope of the present application.

Claims

1. A photovoltaic device, characterized in that: include: A photovoltaic assembly, wherein the photovoltaic assembly is configured as a wave-shaped structure, the photovoltaic assembly comprises at least one crest portion and at least one trough portion, the crest portions and the trough portions are alternately arranged, and the photovoltaic assembly has a light-facing surface and a light-receiving surface opposite to each other; and At least one inverter is disposed on the backlight surface and corresponds to the peak portion, and the inverter is electrically connected to the photovoltaic module.

2. The photovoltaic device according to claim 1, characterized in that: The photovoltaic module includes a front plate, a rear plate and a plurality of battery cells arranged between the front plate and the rear plate, one or more of the battery cells are electrically connected to the inverter, and the front plate, the rear plate and the one or more battery cells are configured as a wavy structure.

3. The photovoltaic device according to claim 1, characterized in that: The photovoltaic device includes a plurality of photovoltaic sheets and a plurality of shingles, each of the photovoltaic sheets and the shingles are configured as an arc-shaped structure, the plurality of photovoltaic sheets are arranged side by side to form the crest portion, each of the photovoltaic sheets includes at least one solar cell, the plurality of shingles are arranged side by side to form the trough portion and are arranged alternately with the plurality of photovoltaic sheets, and two adjacent photovoltaic sheets are overlapped on the shingle located between the two photovoltaic sheets.

4. The photovoltaic device according to claim 2 or 3, characterized in that: The inverter is provided with a plurality of input terminals, the plurality of input terminals are arranged in parallel, and each of the input terminals is used for being electrically connected to the battery cell of the photovoltaic module.

5. The photovoltaic device according to claim 4, characterized in that: Each of the input ends is connected in series with a plurality of the battery cells.

6. The photovoltaic device according to claim 5, characterized in that: The plurality of battery cells connected in series at each input end are arranged side by side.

7. The photovoltaic device according to claim 5, characterized in that: The inverter is provided with 8 input terminals, and each of the input terminals is connected in series with 8 battery cells.

8. The photovoltaic device according to claim 4, characterized in that: The inverter comprises a top surface and a bottom surface facing each other, the top surface is configured as a curved surface matching the crest portion and affixed to the photovoltaic component, and a plurality of input terminals are arranged on the bottom surface.

9. The photovoltaic device according to claim 4, characterized in that: The inverter is arranged at the geometric center of the photovoltaic device.

10. The photovoltaic device according to claim 4, characterized in that: The inverter further includes an inverter circuit and a controller, wherein the inverter circuit is electrically connected to the controller and the input end.

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