Photovoltaic and planting combined device

Abstract

The embodiment of the utility model provides a photovoltaic and planting combined device. The photovoltaic and planting combined device comprises a plurality of photovoltaic devices arranged in a matrix; the photovoltaic device comprises at least one photovoltaic unit module, and each photovoltaic unit module comprises a stand column, a cross beam, a vertical double-sided photovoltaic unit, a rotating shaft, a beam splitting film cross beam, a beam splitting film inclined strut, a speed reducer, a beam splitting film and a sliding rail. The vertical double-sided photovoltaic units are installed between the stand columns and the cross beams. A sliding rail is arranged along the cross beam; rotating shafts are arranged on two sides of the bottom of the vertical double-sided photovoltaic unit; the beam splitting film cross beam and the beam splitting film inclined strut are connected with the rotating shafts; the beam splitting film is arranged in the beam splitting film cross beam; the speed reducer drives the rotating shaft to rotate to drive the beam splitting film inclined strut and the beam splitting film cross beam to rotate, so that the included angle between the beam splitting film and the vertical double-sided photovoltaic unit is changed, and the beam splitting film transmits light of part of wave bands for photosynthesis of crops and reflects the light of part of wave bands to the vertical double-sided photovoltaic unit for electric energy conversion; land and sunlight resources can be efficiently utilized, the automation level is improved, and growth of crops is not affected.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic power generation technology, and in particular to a photovoltaic and planting integration device. Background Technology

[0002] Photovoltaic agriculture combines solar power generation facilities with agricultural production (planting, animal husbandry, water conservancy, etc.) to form an integrated model of "power generation on the panels, planting / animal husbandry underneath." This model can generate clean energy, ensure agricultural output, and significantly improve the comprehensive utilization rate of land.

[0003] In related technologies, horizontal photovoltaic panels are installed above agricultural production to achieve photovoltaic agriculture. However, this method has limitations in terms of land use and sunlight absorption, and it can also easily interfere with agricultural activities. Therefore, how to provide a photovoltaic agriculture method that can efficiently utilize land and sunlight resources without affecting crop growth has become an urgent technical problem to be solved. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a photovoltaic and planting integration device, so as to achieve efficient utilization of land and sunlight resources without affecting crop growth. The specific technical solution is as follows:

[0005] This utility model embodiment provides a photovoltaic and planting integration device, the photovoltaic and planting integration device includes:

[0006] Multiple photovoltaic devices are arranged in a matrix; each photovoltaic device includes at least one photovoltaic unit module, which includes: a column, a crossbeam, a vertical double-sided photovoltaic unit, a rotating shaft, a beam splitter crossbeam, a beam splitter diagonal brace, a speed reducer, and a beam splitter.

[0007] The vertical bifacial photovoltaic unit is installed between the column and the beam, the column and the beam are vertically connected, and the column is perpendicular to the ground;

[0008] The vertical bifacial photovoltaic unit has rotating shafts on both sides of its bottom near-ground end, and the beam splitter beam and the beam splitter diagonal brace are fixedly connected to the rotating shafts; the beam splitter is disposed inside the beam splitter beam.

[0009] The rotating shaft is connected to the reducer, and the reducer is connected to the vertical bifacial photovoltaic unit;

[0010] The speed reducer drives the rotating shaft to rotate, and the rotation of the rotating shaft causes the beam splitter's inclined support and beam to rotate, causing the angle between the beam splitter and the vertical bifacial photovoltaic unit to change. The beam splitter transmits light in the first target wavelength band and reflects light in the second target wavelength band to the vertical bifacial photovoltaic unit. The vertical bifacial photovoltaic unit absorbs the light reflected by the beam splitter and converts it into electrical energy, which serves as one power source for the speed reducer.

[0011] Optionally, the spectrophotometer is formed by vertically stacking a hydrophobic layer, a PET film, an adhesive layer, a spectrophotometer, an adhesive layer, a PET film, and a hydrophobic layer.

[0012] In this invention, the beam-splitting film selectively transmits or reflects infrared, visible, and ultraviolet light of different wavelengths.

[0013] Optionally, the photovoltaic device further includes a slide rail;

[0014] The slide rail is arranged along the crossbeam of the photovoltaic unit module.

[0015] In this invention, the slide rail can be used by agricultural robots or cleaning robots to perform various tasks.

[0016] Optionally, the beam splitter consists of a far-end beam that is far from and parallel to the vertical bifacial photovoltaic unit, a near-end beam that is close to and parallel to the vertical bifacial photovoltaic unit, and two side beams that are perpendicular to the far-end beam.

[0017] The distal crossbeam and the proximal crossbeam are rigid structures, and the side crossbeam is either a rigid structure or a flexible structure.

[0018] The near-end crossbeam and the beam-splitting film brace are both fixedly connected to the rotating shaft; the beam-splitting film brace is connected to the far-end crossbeam or the rigid side-end crossbeam; the beam-splitting film is disposed in the far-end crossbeam, the near-end crossbeam, and the two side-end crossbeams.

[0019] Optionally, the beam-splitting films of adjacent photovoltaic devices form a preset space when they are arranged horizontally or at a target angle with the vertical bifacial photovoltaic unit.

[0020] Optionally, the rotating shaft is provided with a bearing seat and a limiting angle steel; the rotation of the rotating shaft fixes the beam splitter diagonal brace and the beam splitter crossbeam through the bearing seat and the limiting angle steel, so that the beam splitter and the vertical bifacial photovoltaic unit are at a preset angle.

[0021] Optionally, the vertical bifacial photovoltaic unit is a heterojunction vertical bifacial photovoltaic unit.

[0022] Optionally, the heterojunction vertical bifacial photovoltaic unit is formed by vertically stacking a P-type semiconductor layer, an intrinsic amorphous silicon layer, and an n-type semiconductor layer to form a heterojunction;

[0023] Conductive layers are provided on both sides of the heterojunction to form a double-sided power generation structure.

[0024] Optionally, the photovoltaic device further includes a light sensor and a control device;

[0025] The optical sensor is mounted on the beam of the beam-splitting film.

[0026] The control device is electrically connected to the optical sensor and the speed reducer, respectively.

[0027] Optionally, the vertical bifacial photovoltaic unit includes at least two solar panels of a first preset size, and the at least two solar panels are horizontally spliced ​​together.

[0028] Optionally, the beam-splitting film includes at least two reflective films of a second preset size, and the at least two reflective films are vertically spliced ​​together.

[0029] This utility model provides a photovoltaic and planting integrated device, comprising multiple photovoltaic devices arranged in a matrix. Each photovoltaic device includes at least one photovoltaic unit module, which includes: a column, a crossbeam, a vertical double-sided photovoltaic unit, a rotating shaft, a beam-splitting crossbeam, beam-splitting braces, a reducer, and a beam-splitting film. The vertical double-sided photovoltaic unit is installed between the column and the crossbeam, which are vertically connected, with the column perpendicular to the ground. Rotating shafts are located on both sides of the bottom of the vertical double-sided photovoltaic unit near the ground. The beam-splitting crossbeam and beam-splitting braces are fixedly connected to the rotating shafts. The beam-splitting film is disposed within the beam-splitting crossbeam. The rotating shaft is connected to the reducer, which is connected to the vertical double-sided photovoltaic unit. The reducer drives the rotating shaft to rotate, which in turn drives the beam-splitting braces and beam-splitting crossbeam to rotate, causing the angle between the beam-splitting film and the vertical double-sided photovoltaic unit to change. The beam-splitting film transmits light of a first target wavelength band and reflects light of a second target wavelength band to the vertical double-sided photovoltaic unit. The vertical double-sided photovoltaic unit absorbs the light reflected by the beam-splitting film and converts it into electrical energy, which serves as a power source for the reducer.

[0030] Because both the beam and the diagonal brace of the beam-splitting film are fixedly connected to the rotating shaft, the rotation of the shaft drives the diagonal brace and the beam to rotate. Since the beam-splitting film is located inside the beam, this allows the angle between the beam-splitting film and the vertical bifacial photovoltaic unit to change. In other words, the beam-splitting film can be controlled to open and close via the rotating shaft, allowing for better control of the amount of sunlight reaching the crops. The beam-splitting film can transmit light of the first target wavelength band and reflect light of the second target wavelength band to the vertical bifacial photovoltaic unit. This allows the beam-splitting film to selectively transmit the first target wavelength band corresponding to the crop's needs, selectively transmitting most of the wavelength band required by the crop while reflecting most of the wavelength bands that are not needed or less needed to the vertical bifacial photovoltaic unit for energy conversion. This combination maximizes the utilization of solar resources. Furthermore, the vertical bifacial photovoltaic unit, installed perpendicular to the ground and possessing bifacial power generation characteristics, can also reduce problems caused by strong winds or snow accumulation. Compared to horizontal photovoltaic systems, the photovoltaic and planting integration device provided by this invention can not only make efficient use of land and sunlight resources, but also does not affect crop growth.

[0031] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0033] Figure 1 This is a schematic diagram of a photovoltaic and planting integration device according to an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of a photovoltaic device in a photovoltaic and planting integration device according to an embodiment of the present invention;

[0035] Figure 3 This is another schematic diagram of the photovoltaic device in the photovoltaic and planting integration device according to an embodiment of the present utility model;

[0036] Figure 4 This is a schematic diagram of the spectrophotometer structure according to an embodiment of the present invention;

[0037] Figure 5 This is another schematic diagram of the photovoltaic device in the photovoltaic and planting integration device of this utility model embodiment.

[0038] The attached figures are labeled as follows:

[0039] 1-Photovoltaic device, 11-Photovoltaic unit module, 111-Column, 112-Crossbeam, 1121-Lower crossbeam, 113-Vertical double-sided photovoltaic unit, 114-Rotating shaft, 115-Beam splitter crossbeam, 116-Beam splitter diagonal brace, 117-Reducer and 118-Beam splitter, 119-Bearing seat and limiting angle steel, 1181-Hydrophobic layer, 1182-PET film, 1183-Adhesive layer, 1184-Beam splitter layer, 120-Slide rail. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art based on this application are within the protection scope of the present utility model.

[0041] To achieve a photovoltaic and planting integrated device that can efficiently utilize land and sunlight resources without affecting crop growth, this utility model embodiment provides a photovoltaic and planting integrated device, referring to... Figure 1 The photovoltaic and planting integration device may include: multiple photovoltaic devices 1, which are arranged in a vertical or horizontal matrix;

[0042] Figure 1 The example shows two photovoltaic devices 1, but in actual applications, the number of photovoltaic devices and the arrangement of the photovoltaic device matrix can be set according to the area of ​​the photovoltaic plot where the photovoltaic and planting combination device is deployed or the actual needs.

[0043] Reference Figure 2 The photovoltaic device 1 includes at least one photovoltaic unit module 11, which includes: a column 111, a crossbeam 112, a vertical double-sided photovoltaic unit 113, a rotating shaft 114, a beam splitter crossbeam 115, a beam splitter diagonal brace 116, a reducer 117, and a beam splitter 118.

[0044] The vertical bifacial photovoltaic unit 113 is installed between the column 111 and the beam 112. The column 111 and the beam 112 are vertically connected, and the column 111 is perpendicular to the ground.

[0045] The vertical bifacial photovoltaic unit 113 has rotating shafts 114 on both sides of the bottom near the ground end. The beam splitter beam 115 and the beam splitter diagonal brace 116 are fixedly connected to the rotating shafts 114. The beam splitter 118 is installed inside the beam splitter beam 115.

[0046] The rotating shaft 114 is connected to the reducer 117, and the reducer 117 is connected to the vertical bifacial photovoltaic unit 113;

[0047] The reducer 117 drives the rotating shaft 114 to rotate. The rotation of the rotating shaft 114 causes the beam splitter beam 115 and the beam splitter diagonal brace 116 to rotate, which causes the angle between the beam splitter 118 and the vertical bifacial photovoltaic unit 113 to change. The beam splitter 118 transmits light of the first target wavelength band and reflects light of the second target wavelength band to the vertical bifacial photovoltaic unit 113. The vertical bifacial photovoltaic unit 113 absorbs the light reflected by the beam splitter 118 and converts it into electrical energy. The electrical energy serves as one power source for the reducer 117.

[0048] The photovoltaic and planting integration device of this utility model can be applied to photovoltaic agriculture. The photovoltaic device 1 may include a speed reducer 117. Correspondingly, at least one photovoltaic unit module 11 shares a speed reducer 117. Of course, a speed reducer 117 may also be provided for each photovoltaic unit module 11. Figure 2 An example of a speed reducer 117 is shown, but this does not constitute a specific limitation on the number and arrangement of the speed reducers 117 of this utility model.

[0049] In one example, the photovoltaic and planting integration device of this invention is deployed on a photovoltaic plot. The foundation of the photovoltaic plot support can be a micro-drilled cast-in-place pile, with the pile foundation made of fine aggregate concrete, poured to the surface. The column 111 is perpendicular to the ground and fixed to the pile foundation. The column 111 and the crossbeam 112 are vertically connected, specifically by means of threaded connection or other methods. The vertical bifacial photovoltaic unit 113 can be a bifacial solar panel, fixed between the column 111 and the crossbeam 112 by adhesive or screws. The crossbeam 112 includes an upper crossbeam and a lower crossbeam, and the column 111 and the crossbeam 112 enclose the vertical bifacial photovoltaic unit 113.

[0050] A rotating shaft 114 is fixedly installed on both sides of the bottom crossbeam 112 near the ground end of the vertical bifacial photovoltaic unit 113. The rotating shaft 114 can be fixedly installed on the column 111 of the photovoltaic unit module 11 by screws, bolts, etc., parallel to the lower crossbeam of the vertical bifacial photovoltaic unit 113. In one example, the photovoltaic device 1 shares a common rotating shaft 114. Correspondingly, the rotating shaft 114 is fixedly installed on the column 111 of each photovoltaic unit module 11 in the photovoltaic device 1 by screws, bolts, etc., so that the rotation of the rotating shaft 114 drives the beam splitting film 118 of all photovoltaic unit modules 11 in the photovoltaic device 1 to rotate uniformly.

[0051] like Figure 3As shown, the rotating shaft 114 is fixedly connected to the beam splitter beam 115 and the beam splitter diagonal brace 116 by screws, bolts, etc. The beam splitter beam 115 can be a rectangular frame. The beam splitter beam 115 and the beam splitter diagonal brace 116 are fixedly connected by screws, bolts, etc. The beam splitter 118 is fixedly installed inside the beam splitter beam 115 by adhesive or screws. Thus, the rotating shaft 114, beam splitter beam 115, beam splitter diagonal brace 116, and beam splitter 118 form a whole. When the rotating shaft 114 rotates, it drives the beam splitter beam 115, beam splitter diagonal brace 116, and beam splitter 118 to rotate as a whole. For example, the beam splitter beam 115 can be made of basalt fiber composite material to increase the wind resistance of the beam splitter 118.

[0052] The rotating shaft 114 is connected to the reducer 117 via gears or other transmission mechanisms. The reducer 117 is electrically connected to the vertical bifacial photovoltaic unit 113. In one example, the reducer 117 can be a motor.

[0053] The reducer 117 drives the rotating shaft 114 to rotate, and the rotation of the rotating shaft 114 drives the beam splitter beam 115 and the beam splitter diagonal brace 116 to rotate. That is, the reducer 117 drives the rotating shaft 114 to drive the beam splitter 118 to rotate up and down, so that the angle between the beam splitter 118 and the vertical bifacial photovoltaic unit 113 changes.

[0054] Considering that most of the sunlight required for plant growth is red and blue light, with minimal absorption of green light, this portion of sunlight cannot be fully utilized. However, green light is a wavelength highly suitable for photoelectric conversion in photovoltaic modules (such as crystalline silicon cells). Furthermore, the high temperatures and intense sunlight of summer severely impact crop yield and quality. Direct sunlight in summer can reach over 150,000 lux, several times the amount of light required for plant photosynthesis. Plants regulate surface temperature by transpirating water through leaf stomata, but this function malfunctions if the temperature is too high or the sunlight too intense. Additionally, essential nutrients such as calcium are lost during transpiration. In other words, excessive sunlight leads to increased crop surface temperature, consequently affecting yield and quality. In this invention, the reducer 117 drives the rotating shaft 114 to rotate, and the rotating shaft 114 drives the beam splitter spur 116 and the beam splitter beam 115 to rotate, causing the angle between the beam splitter 118 and the vertical bifacial photovoltaic unit 113 to change. The beam splitter 118 transmits light of the first target wavelength band and reflects light of the second target wavelength band to the vertical bifacial photovoltaic unit 113. The vertical bifacial photovoltaic unit 113 absorbs the light reflected by the beam splitter 118 and converts it into electrical energy.

[0055] In one example, the beam-splitting film 118 can selectively transmit light of the wavelengths needed by the crops grown on the photovoltaic plot, while reflecting light of the wavelengths not needed by the crops to the vertical bifacial photovoltaic unit 113, so that the vertical bifacial photovoltaic unit 113 can perform power conversion. That is, the beam-splitting film 118 can be designed according to the crop's preferences, selectively transmitting light of the wavelengths needed by the crops, while reflecting light of the wavelengths not needed by the crops. The vertical bifacial photovoltaic unit 113 then converts the light reflected by the beam-splitting film 118 into power, thereby maximizing the utilization of solar resources.

[0056] For example, the first target wavelength band is set to the wavelength required by the target crop, and the second target wavelength band is the wavelength not needed by the target crop. For instance, the first target wavelength band is mainly located in the red and blue light bands, and the second target wavelength band is mainly located in the green and yellow light bands (primarily the green light band). Specifically, the first and second target wavelength bands can be set according to the needs of the crop, and then adjusted to a certain extent in the manufacturing process of the spectrophotometer to approximate the requirements as closely as possible. This invention does not limit this. In addition, for infrared and ultraviolet light, adjustments can be made according to the needs of different crops to achieve partial reflection or maximum transmission.

[0057] In this embodiment, since both the beam splitter and the diagonal brace are fixedly connected to the rotating shaft, the rotation of the shaft can drive the diagonal brace and the beam splitter to rotate. The beam splitter is positioned inside the beam splitter, which changes the angle between the beam splitter and the vertical bifacial photovoltaic unit. This means the beam splitter can be controlled to open and close via the rotating shaft, allowing for better control of the crop's solar radiation levels. The beam splitter can transmit light of a first target wavelength band and reflect light of a second target wavelength band to the vertical bifacial photovoltaic unit. This allows the beam splitter to selectively transmit light of the wavelength bands needed by the crop, typically red, blue, and most infrared and ultraviolet light, while reflecting light of wavelengths less needed or completely unnecessary to the crop to the vertical bifacial photovoltaic unit for energy conversion. These wavelengths typically include green, some yellow, infrared, and ultraviolet light, which are effective for photovoltaic power generation. This combination maximizes the utilization of solar resources. Furthermore, the vertical bifacial photovoltaic unit is installed perpendicular to the ground and has bifacial power generation characteristics, which can also reduce problems caused by strong winds or snow accumulation. Compared with horizontal photovoltaics, the photovoltaic and planting combination device provided by this utility model can not only make efficient use of land and sunlight resources, but also does not affect or even promotes crop growth, effectively improve the level of planting automation, and save water use to a certain extent.

[0058] In some examples, the beam-splitting film 118 can be designed as a multilayer interference film, such as... Figure 4As shown, the spectrophotometer 118 can be formed by vertically stacking a hydrophobic layer 1181, a polyethylene terephthalate (PET) film 1182, an adhesive layer 1183, a spectrophotometer 1184, an adhesive layer 1183, a PET film 1182, and a hydrophobic layer 1181.

[0059] The spectrophotometer 118 employs a 3+1+3 symmetrical structure. For example, the hydrophobic layer 1181 can be a wear-resistant hydrophobic layer with a thickness of, for example, 2-3 micrometers (µm). The PET film 1182 has a thickness of, for example, 50 µm. The adhesive layer 1183 can use conventional adhesives in the art, with a thickness of, for example, 4 µm. The spectrophotometer 1184 is a film of a different color, with a thickness of, for example, 4 µm.

[0060] Different colors of beam-splitting layers 1184 are selected according to the crop's preferences, corresponding to different beam-splitting films 118. For example, the beam-splitting film 118 can transmit light in a first target wavelength band while reflecting light in a second target wavelength band. That is, the beam-splitting film 118 selectively transmits the light waves required for crop photosynthesis, while light in wavelengths not needed by the crop (mainly green light) is reflected to the vertical bifacial photovoltaic unit 113 to be converted into renewable energy and increase photovoltaic power generation.

[0061] This invention is more suitable for crops with low light saturation points, while for crops with high light saturation points, the beam-splitting film 118 needs to be adjusted appropriately. For example, depending on the crop, different beam-splitting layers 1184 can be selected to allow the beam-splitting film 118 to reflect or transmit light of different wavelengths, thereby maximizing the combined output of photovoltaic energy and organic matter. That is, the beam-splitting film 118 can selectively transmit or reflect infrared, visible, and ultraviolet light of different wavelengths.

[0062] For example, the angle between the beam-splitting film 118 and the vertical bifacial photovoltaic unit 113 can be adjusted according to weather, season, and time to control the sunlight exposure of crops to a certain extent, which helps to improve crop yield and quality and achieve mutual promotion between agriculture and photovoltaics. For example, in windy weather, the beam-splitting film 118 can be folded or retracted to form a 0-degree angle with the vertical bifacial photovoltaic unit 113. In rainy or snowy weather, the beam-splitting film 118 can be rotated to form a 30-degree angle with the vertical bifacial photovoltaic unit 113 to reduce damage to the beam-splitting film 118. When there is sunlight, the light shining on the beam-splitting film beam 115 away from the rotating axis 114 can be adjusted so that it is reflected to the vertical bifacial photovoltaic unit 113. For example, at noon (11:30-13:30), the beam-splitting film 118 can be adjusted to form a 45-degree angle with the vertical bifacial photovoltaic unit 113.

[0063] In some examples, such as Figure 5As shown, the photovoltaic device 1 may also include a slide rail 120, which is arranged along the crossbeam 112 of the photovoltaic unit module 11.

[0064] In one example, the crossbeam 112 in the photovoltaic device 1 may include an upper crossbeam and a lower crossbeam. Figure 5 The crossbeam 112 in the photovoltaic device 1 shown is the upper crossbeam, and may also include a lower crossbeam 1121. The upper crossbeam of all photovoltaic unit modules 11 in the photovoltaic device 1 can be a single, complete crossbeam, and the lower crossbeam 1121 can also be a single, complete crossbeam. Furthermore, a slide rail 120 can be installed on this complete crossbeam to facilitate the installation of robots or other equipment for operation. The slide rails 120 between different photovoltaic devices 1 may or may not be connected.

[0065] For example, the upper crossbeam of all photovoltaic unit modules 11 in photovoltaic device 1 is a complete crossbeam, or the lower crossbeam 1121 of all photovoltaic unit modules 11 in photovoltaic device 1 is a complete crossbeam, or the upper crossbeam and lower crossbeam 1121 of all photovoltaic unit modules 11 in photovoltaic device 1 are each a complete crossbeam. All of these are possible, and the specific settings are determined according to actual needs.

[0066] A slide rail 120 is installed along the crossbeam 112 or the lower crossbeam 1121 of the photovoltaic unit module 11. The slide rail 120 can be used by agricultural robots or cleaning robots to perform various operations, so that robots and other equipment can use the slide rail 120 to perform agricultural operations such as crop harvesting, weeding, watering and fertilizing, or to facilitate robots and other equipment to use the slide rail to perform cleaning operations such as cleaning of the vertical double-sided photovoltaic unit 113 and the beam splitting film 118.

[0067] In some examples, the crossbeam 112 of the photovoltaic unit module 11 can also be deployed in the middle of the vertical double-sided photovoltaic unit 113 to facilitate the installation of the slide rail 120. Specifically, in this utility model, the position of the crossbeam 112 for installing the slide rail 120 is not limited.

[0068] In some examples, the beam-splitting crossbeam 115 consists of a far-end crossbeam that is far from and parallel to the vertical bifacial photovoltaic unit, a near-end crossbeam that is close to and parallel to the vertical bifacial photovoltaic unit, and two side-end crossbeams that are perpendicular to the far-end crossbeam; wherein, the far-end crossbeam and the near-end crossbeam are rigid structures, and the side-end crossbeams are rigid or flexible structures; in this case, the near-end crossbeam and the beam-splitting diagonal brace are both fixedly connected to the rotating shaft; the beam-splitting diagonal brace is connected to the far-end crossbeam or the rigid side-end crossbeam; the beam-splitting film is disposed within the far-end crossbeam, the near-end crossbeam, and the two side-end crossbeams;

[0069] With the side beams being flexible structures, the beam splitter diagonal brace 116 can be a telescopic structure, and the beam splitter beam 115 together with the beam splitter can be folded away, making the structure more flexible and saving space.

[0070] In some examples, the beam splitters of adjacent photovoltaic devices form a predetermined space when arranged horizontally or at a target angle with the vertical bifacial photovoltaic units.

[0071] The target angle can be set according to actual conditions; for example, the target angle can vary between 30-90°. The preset space can be determined according to actual conditions. For instance, when the splitting films of adjacent photovoltaic devices are arranged horizontally, the far-end crossbeams of the splitting films of adjacent photovoltaic devices can be connected, allowing the adjacent photovoltaic devices to form a certain degree of enclosed space, which is beneficial to crop growth. Alternatively, when the splitting films of adjacent photovoltaic devices are at the target angle to the vertical bifacial photovoltaic units, the splitting films of the adjacent photovoltaic devices form a partially open triangular space to a certain extent, which is also beneficial to crop growth, and so on.

[0072] In some examples, such as Figure 2 As shown, a bearing seat and a limiting angle steel 119 are provided on the rotating shaft 114. The rotation of the rotating shaft 114 fixes the beam splitter diagonal brace 116 and the beam splitter crossbeam 115 through the bearing seat and the limiting angle steel 119, so that the beam splitter 118 and the vertical bifacial photovoltaic unit 113 are at a preset angle.

[0073] In one example, when the vertical bifacial photovoltaic unit 113 absorbs sunlight reflected by the beam splitter 118 and converts it into electrical energy, the preset angle can vary between 30-120°C.

[0074] In some examples, the vertical bifacial photovoltaic unit 113 can be a heterojunction vertical bifacial photovoltaic unit. The heterojunction vertical bifacial photovoltaic unit can be formed by vertically stacking a P-type semiconductor layer, an intrinsic amorphous silicon layer, and an n-type semiconductor layer to form a heterojunction. This allows charge carriers to transport along the vertical direction during power conversion, shortening the migration path and reducing recombination losses. Conductive layers are provided on both sides of the heterojunction to form a bifacial power generation structure. These conductive layers can be indium tin oxide (ITO) or aluminum doped zinc oxide (AZO), etc., to accommodate the bifacial light absorption when the vertical bifacial photovoltaic unit 113 is vertically installed.

[0075] In some examples, heterojunction vertical bifacial photovoltaic cells can use amorphous silicon (a-Si), microcrystalline silicon (μc-Si), or perovskite as the light-absorbing layer to combine with the conductive layer, thereby improving the response efficiency of the heterojunction vertical bifacial photovoltaic cell in low-light environments.

[0076] In some examples, the photovoltaic device 1 of the above-mentioned photovoltaic and planting combined device may also include a light sensor and a control device (not shown in the figure). The light sensor is mounted on the beam 115 of the beam-splitting film. For example, the light sensor may be mounted on the beam 115 of the beam-splitting film 115 (i.e., the distal beam) away from the rotating shaft 114. The light sensor may be a solar sensor to identify sunlight. The control device is electrically connected to both the light sensor and the reducer 117 to receive the electrical signal transmitted by the light sensor, determine the current direct angle of sunlight, and control the reducer 117 to operate based on the current direct angle of sunlight. That is, the reducer 117 drives the rotating shaft 114 to rotate, which in turn drives the beam-splitting film brace 116 and the beam-splitting film beam 115 to rotate, causing a change in the angle between the beam-splitting film 118 and the vertical bifacial photovoltaic unit 113, thereby ensuring a balance between increasing power generation by reflecting sunlight and balancing plant growth.

[0077] For example, a certain gap can be set between the beam splitter 118 and the vertical bifacial photovoltaic unit 113. The specific gap size can be set according to the actual situation to form a wind channel, and it can be appropriately reinforced by the column 111, the rotating shaft 114, etc. to facilitate wind protection.

[0078] In some examples, the vertical bifacial photovoltaic unit 113 may include at least two solar panels of a first preset size, which are horizontally spliced ​​together. The beam-splitting film 118 may include at least two reflective films of a second preset size, which are vertically spliced ​​together. For example, the first preset size may be 2384*1303 mm, and the second preset size may be 2278*1134 mm. Of course, this invention does not specifically limit the first and second preset sizes, and the first and second preset sizes can be set according to actual conditions.

[0079] For example, the photovoltaic device 1 of the photovoltaic and planting combination device may also include a cleaning device (not shown in the figure). The cleaning device may be a water spraying device, which can be installed on the slide rail and positioned opposite to the beam splitting film 118, so as to clean the dust and debris on the surface of the beam splitting film 118 and the vertical bifacial photovoltaic unit 113, so as to ensure the continuous and efficient operation of the photovoltaic and planting combination device.

[0080] The photovoltaic and planting integration device provided in this embodiment of the invention can control the amount of sunlight and the wavelengths of reflected and transmitted light waves using a beam-splitting film, suppressing excessive rise in crop surface temperature and ensuring the amount of sunlight and suitable wavelengths for plant growth. On cloudy or rainy days, the beam-splitting film can be retracted (making the angle between the beam-splitting film and the vertical bifacial photovoltaic unit smaller or parallel) to prioritize crop photosynthesis. At night, the beam-splitting film can be opened (making the angle between the beam-splitting film and the vertical bifacial photovoltaic unit larger or perpendicular), improving heat preservation and providing frost protection. Simultaneously, using vertically installed vertical bifacial photovoltaic units with bifacial power generation characteristics for power generation can reduce problems caused by strong winds or snow accumulation, facilitate agricultural operations such as weeding, fertilizing, and harvesting, and appropriately reduce system and construction costs.

[0081] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model are included within the scope of protection of this utility model.

Claims

1. A photovoltaic and planting integrated device, characterized in that, The photovoltaic and planting integration device includes: Multiple photovoltaic devices are arranged in a matrix; each photovoltaic device includes at least one photovoltaic unit module, which includes: a column, a crossbeam, a vertical double-sided photovoltaic unit, a rotating shaft, a beam splitter crossbeam, a beam splitter diagonal brace, a speed reducer, and a beam splitter. The vertical bifacial photovoltaic unit is installed between the column and the beam, the column and the beam are vertically connected, and the column is perpendicular to the ground; The vertical bifacial photovoltaic unit has rotating shafts on both sides of its bottom near-ground end, and the beam splitter beam and the beam splitter diagonal brace are fixedly connected to the rotating shafts; the beam splitter is disposed inside the beam splitter beam. The rotating shaft is connected to the reducer, and the reducer is connected to the vertical bifacial photovoltaic unit; The speed reducer drives the rotating shaft to rotate, and the rotation of the rotating shaft causes the beam splitter's inclined support and beam to rotate, causing the angle between the beam splitter and the vertical bifacial photovoltaic unit to change. The beam splitter transmits light in the first target wavelength band and reflects light in the second target wavelength band to the vertical bifacial photovoltaic unit. The vertical bifacial photovoltaic unit absorbs the light reflected by the beam splitter and converts it into electrical energy, which serves as one power source for the speed reducer.

2. The photovoltaic and planting integration device according to claim 1, characterized in that, The beam splitter is formed by vertically stacking a hydrophobic layer, a PET film, an adhesive layer, a beam splitter, an adhesive layer, a PET film, and a hydrophobic layer.

3. The photovoltaic and planting integration device according to claim 1, characterized in that, The photovoltaic device also includes a slide rail; The slide rail is arranged along the crossbeam of the photovoltaic unit module.

4. The photovoltaic and planting integration device according to claim 2, characterized in that, The beam splitter consists of a far-end beam that is far from and parallel to the vertical bifacial photovoltaic unit, a near-end beam that is close to and parallel to the vertical bifacial photovoltaic unit, and two side beams that are perpendicular to the far-end beam. The distal crossbeam and the proximal crossbeam are rigid structures, and the side crossbeam is either a rigid structure or a flexible structure. The near-end crossbeam and the beam-splitting film brace are both fixedly connected to the rotating shaft; the beam-splitting film brace is connected to the far-end crossbeam or the rigid side-end crossbeam; the beam-splitting film is disposed in the far-end crossbeam, the near-end crossbeam, and the two side-end crossbeams.

5. The photovoltaic and planting integration device according to claim 1, characterized in that, When the beam-splitting films of adjacent photovoltaic devices are arranged horizontally or at a target angle with the vertical bifacial photovoltaic unit, a preset space is formed.

6. The photovoltaic and planting integration device according to claim 1, characterized in that, The rotating shaft is provided with a bearing seat and a limiting angle steel; the rotation of the rotating shaft fixes the beam splitter diagonal brace and the beam splitter crossbeam through the bearing seat and the limiting angle steel, so that the beam splitter and the vertical bifacial photovoltaic unit are at a preset angle.

7. The photovoltaic and planting integration device according to any one of claims 1-3, characterized in that, The photovoltaic device also includes a light sensor and a control device; The optical sensor is mounted on the beam of the beam-splitting film. The control device is electrically connected to the optical sensor and the speed reducer, respectively.

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