Fixed photovoltaic power generation device

Abstract

The utility model discloses a fixed photovoltaic power generation device, which comprises a supporting assembly, a photovoltaic battery assembly and a convergence light-transmitting lens group, and the convergence light-transmitting lens assembly is connected to the top surface of the photovoltaic battery assembly. The photovoltaic battery assembly comprises a battery frame and a plurality of photovoltaic battery piece units, the battery frame is provided with a plurality of positioning cavities distributed in an array mode, and each photovoltaic battery piece unit is installed in the corresponding positioning cavity. The convergence light-transmitting mirror assembly comprises a heightened light-transmitting plate and a plurality of light-transmitting convergence units, the light-transmitting convergence units are spliced and connected in an array, the central optical axis of each light-transmitting convergence unit is collinear with the central point of the corresponding photovoltaic cell unit, and the joint of every two adjacent light-transmitting convergence units is located on the cell frame. According to the utility model, the angles of the light incident to the corresponding photovoltaic cell units are adjusted in a targeted manner through the light-transmitting convergence units, so that the utilization rate of light energy at different illumination angles can be effectively improved, and the photovoltaic power generation performance is good.

Description

Technical Field

[0001] The utility model relates to the field of photovoltaic power generation, in particular to a fixed photovoltaic power generation device. Background Art

[0002] Photovoltaic power generation device, also known as photovoltaic power generation system, refers to a power generation system that uses the photovoltaic effect of photovoltaic cells to directly convert solar radiation energy into electrical energy. Photovoltaic cells are made of semiconductor materials.

[0003] Photovoltaic power generation devices are installed and used in outdoor environments. They convert sunlight into electrical energy during sunny days. Due to different cost budgets and application requirements, there are many types of existing photovoltaic power generation devices. According to their activity performance, photovoltaic power generation devices are mainly divided into two types: fixed type and movable type. Currently, the most common photovoltaic power generation device is a fixed type, with low investment cost and low maintenance cost. Once this type of photovoltaic power generation device is put into use, it will hardly be adjusted in position, making it difficult to meet the power generation needs under different light angles. The utilization rate of light energy is low, and the photovoltaic power generation performance is poor. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a fixed photovoltaic power generation device, which can improve the utilization rate of light energy under different illumination angles and has good photovoltaic power generation performance.

[0005] A fixed photovoltaic power generation device according to an embodiment of the utility model includes a support assembly, a photovoltaic cell assembly and a converging light-transmitting mirror group, the photovoltaic cell assembly and the converging light-transmitting mirror assembly are both installed on the support assembly, and the converging light-transmitting mirror assembly is connected to the top surface of the photovoltaic cell assembly; the photovoltaic cell assembly includes a battery frame and a plurality of photovoltaic cell sheet units, the battery frame is provided with a plurality of positioning cavities distributed in an array, and each photovoltaic cell sheet unit is respectively installed in a corresponding positioning cavity; the converging light-transmitting mirror assembly includes a heightened light-transmitting plate and a plurality of light-transmitting converging units, the heightened light-transmitting plate covers the top surface of the photovoltaic cell assembly, the light-transmitting converging unit is located on the side of the heightened light-transmitting plate away from the photovoltaic cell assembly, the light-transmitting converging units are connected in an array, the central optical axis of each light-transmitting converging unit is respectively collinear with the central point of the corresponding photovoltaic cell sheet unit, the connection between each two adjacent light-transmitting converging units is located on the battery frame, and the light-transmitting converging unit is used to adjust the light to propagate in a direction close to the photovoltaic cell sheet unit.

[0006] In this embodiment, the converging light-transmitting unit is an aspherical convex lens unit.

[0007] In this embodiment, the converging light-transmitting unit is a quadrangular pyramid lens unit.

[0008] In this embodiment, the photovoltaic cell assembly also includes a glass panel, a light-transmitting adhesive layer, a back adhesive layer and a backboard. The cell frame and each photovoltaic cell unit constitute a cell module. The top surface of the cell module is sequentially stacked and connected to the light-transmitting adhesive layer and the glass panel, and the bottom surface of the cell module is sequentially stacked and connected to the back adhesive layer and the backboard.

[0009] In this embodiment, the fixed photovoltaic power generation device further includes a heat sink, which is mounted on the supporting assembly and covers the bottom surface of the photovoltaic cell assembly.

[0010] In this embodiment, the support assembly includes a support leg, a column and a support bracket. The bottom of the column is locked with the support leg, the bottom of the support bracket is rotatably connected to the support leg, the top of the column is rotatably connected to the support bracket, and the photovoltaic cell assembly is installed on the support bracket.

[0011] In this embodiment, the support assembly also includes a locking screw, the bottom of the column is provided with a positioning hole matching the locking screw, the support foot is provided with a plurality of locking screw holes matching the locking screw, the locking screw is passed through the positioning hole and threadedly connected to the corresponding locking screw hole.

[0012] The embodiments of the present invention have at least the following beneficial effects:

[0013] By setting a plurality of light-transmitting convergence units corresponding to the photovoltaic cell units one by one, the effects of adjusting the light in each area by each light-transmitting convergence unit are similar, which can improve the balance of light collection, and the angle of light incident on the corresponding photovoltaic cell unit is adjusted in a targeted manner by each light-transmitting convergence unit, thereby reducing the probability of light escaping due to total reflection in the photovoltaic cell unit due to excessive incident angle, which can effectively improve the utilization rate of light energy under different illumination angles, thereby improving the efficiency of photovoltaic power generation; in addition, the edge area of ​​the light-transmitting convergence unit can also collect light corresponding to the battery frame area, and the heightened light-transmitting plate can provide sufficient propagation space for this part of the adjusted light, and the light adjusted in the direction by the edge area of ​​the light-transmitting convergence unit can effectively be incident on the photovoltaic cell unit after passing through the heightened light-transmitting plate, which can further improve the utilization rate of light energy, and the photovoltaic power generation device has good photovoltaic power generation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0015] Figure 1 It is a three-dimensional structural schematic diagram of a fixed photovoltaic power generation device according to an embodiment of the utility model;

[0016] Figure 2 It is a side view structural schematic diagram of a fixed photovoltaic power generation device according to an embodiment of the utility model;

[0017] Figure 3 For along Figure 2 A-A' cross-sectional structural diagram;

[0018] Figure 4 This is a schematic diagram of the structure of a photovoltaic cell assembly and a focusing light-transmitting mirror group in a fixed photovoltaic power generation device according to an embodiment of the utility model;

[0019] Figure 5 It is a three-dimensional structural schematic diagram of a fixed photovoltaic power generation device according to another embodiment of the utility model;

[0020] Figure 6 This is a schematic structural diagram of a photovoltaic cell assembly and a focusing light-transmitting mirror group in a fixed photovoltaic power generation device according to another embodiment of the utility model.

[0021] Reference numerals:

[0022] Support assembly 100, support leg 110, locking screw hole 111, column 120, positioning hole 121, support bracket 130, locking screw 140;

[0023] Photovoltaic cell assembly 200, cell frame 210, positioning cavity 211, photovoltaic cell unit 220, glass panel 230, light-transmitting adhesive layer 240, back adhesive layer 250, back plate 260;

[0024] Converging light-transmitting lens group 300, heightened light-transmitting plate 310, and light-transmitting converging unit 320;

[0025] Heat sink 400 . DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, left, right, front, back, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In the description of the utility model, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] Photovoltaic power generation devices are power generation systems that use the photovoltaic effect of photovoltaic cells to directly convert solar radiation energy into electrical energy. They are installed and used in outdoor environments, and use sunlight to convert into electrical energy during sunny days. Due to different cost budgets and application requirements, there are many types of existing photovoltaic power generation devices. According to their activity performance, photovoltaic power generation devices are mainly divided into two types: fixed and mobile. Mobile photovoltaic power generation devices can adjust their position according to actual lighting conditions, but mobile photovoltaic power generation devices have high investment costs and high maintenance costs. Currently, the most common photovoltaic power generation device is a fixed type, with low investment costs and low maintenance costs. Once this type of photovoltaic power generation device is put into use, it will hardly be adjusted in position, making it difficult to meet the power generation needs under different lighting angles. The utilization rate of light energy is low, and the photovoltaic power generation performance is poor.

[0031] The photovoltaic cell assembly in the photovoltaic power generation device is provided with a panel glass on the surface. When the sunlight is incident on the panel glass at a large angle, when the angle is greater than the total reflection angle, the light will be reflected in the panel glass. The reflected light can easily escape from the photovoltaic cell assembly. The existing photovoltaic power generation device has a low utilization rate of light energy.

[0032] The following is the attached Figure 1 To Attachment Figure 6 , describing the fixed photovoltaic power generation device of the embodiment of the utility model, which can improve the utilization rate of light energy under different lighting angles and has good photovoltaic power generation performance.

[0033] Reference Figure 1 and Figure 6A fixed photovoltaic power generation device of this embodiment includes a support assembly 100, a photovoltaic cell assembly 200 and a converging light-transmitting mirror group 300. The photovoltaic cell assembly 200 and the converging light-transmitting mirror group 300 are both installed on the support assembly 100. The converging light-transmitting mirror group 300 can be connected to the top surface of the photovoltaic cell assembly 200. The converging light-transmitting mirror group 300 can be connected to the top surface of the photovoltaic cell assembly 200 by adhesive. When installed and used, the top surface of the photovoltaic cell assembly 200 is tilted upward. The tilt angle is specifically set according to the latitude of the location. For example, the top surface of the photovoltaic cell assembly 200 used in the northern hemisphere is tilted toward the south.

[0034] The photovoltaic cell assembly 200 includes a cell frame 210 and a plurality of photovoltaic cell units 220. The cell frame 210 is provided with a plurality of positioning cavities 211 distributed in an array. The number of the photovoltaic cell units 220 is equal to the number of the positioning cavities 211. Each photovoltaic cell unit 220 is respectively installed in a corresponding positioning cavity 211. The photovoltaic cell units 220 are connected in series or in parallel through interconnection welding strips.

[0035] The light-converging lens group 300 includes a heightened light-transmitting plate 310 and a plurality of light-converging units 320. The heightened light-transmitting plate 310 covers the top surface of the photovoltaic cell assembly 200. Each light-converging unit 320 is located on the side of the heightened light-transmitting plate 310 away from the photovoltaic cell assembly 200. All the light-converging units 320 are connected in an array. The central optical axis of each light-converging unit 320 is collinear with the central point of the corresponding photovoltaic cell unit 220. The connection between each two adjacent light-converging units 320 is Located on the battery frame 210, that is, the connection between two adjacent light-transmitting convergence units 320 corresponds to the position of the battery frame 210 one by one. The light-transmitting convergence unit 320 is used to adjust the light to be emitted and propagated in the direction close to the photovoltaic cell unit 220, that is, the light-transmitting convergence unit 320 is used to adjust the light to be incident on the photovoltaic cell unit 220 in the direction close to the above-mentioned central optical axis, so as to improve the utilization rate of light energy, and can effectively reduce the light from escaping due to total reflection inside the photovoltaic cell unit 220 due to excessive incident angle.

[0036] By setting a plurality of light-transmitting convergence units 320 corresponding to the photovoltaic cell units 220 one by one, the effects of adjusting the light in each area by each light-transmitting convergence unit 320 are similar, which can improve the balance of light collection, and the angle of light incident on the corresponding photovoltaic cell unit 220 is adjusted in a targeted manner by each light-transmitting convergence unit 320, thereby reducing the probability of light escaping due to total reflection in the photovoltaic cell unit 220 due to excessive incident angle, which can effectively improve the utilization rate of light energy under different lighting angles, thereby improving the efficiency of photovoltaic power generation; in addition, the edge area of ​​the light-transmitting convergence unit 320 can also collect light corresponding to the battery frame 210 area, and the heightened light-transmitting plate 310 can provide sufficient propagation space for this part of the adjusted light, and the light adjusted in the direction by the edge area of ​​the light-transmitting convergence unit 320 can effectively be incident on the photovoltaic cell unit 220 after passing through the heightened light-transmitting plate 310, which can further improve the utilization rate of light energy, and the photovoltaic power generation performance of the photovoltaic power generation device is good.

[0037] It can be understood that the light-transmitting convergence unit 320 is an aspheric convex lens unit, and the converging light-transmitting lens group 300 is composed of a number of aspheric convex lens units cut on all four sides to be flat. Each area of ​​each aspheric convex lens unit can have a good light convergence function, even the edge area of ​​the aspheric convex lens unit corresponding to the battery frame 210 also has a good light convergence function, thereby effectively ensuring the light energy utilization rate of the photovoltaic power generation device.

[0038] It can be understood that the light-transmitting converging unit 320 is a tetrahedral lens unit, which is a lens structure in the shape of a tetrahedron. The converging light-transmitting lens group 300 is composed of several tetrahedral lens units whose bottom edges are connected in a collinear manner. The edge area of ​​the tetrahedral lens unit can adjust the light that should originally reach the battery frame 210 to be emitted in a direction close to the photovoltaic cell unit 220 and enter the photovoltaic cell unit 220.

[0039] It can be understood that the photovoltaic cell assembly 200 also includes a glass panel 230, a light-transmitting adhesive layer 240, a back adhesive layer 250 and a back plate 260, and the cell frame 210 and each photovoltaic cell unit 220 constitute a cell module. The top surface of the cell module is sequentially stacked and connected with the light-transmitting adhesive layer 240 and the glass panel 230, that is, the light-transmitting adhesive layer 240 covers the top surface of the cell module, and the glass panel 230 covers the side of the light-transmitting adhesive layer 240 away from the cell module, and the bottom surface of the cell module is sequentially stacked and connected with the back adhesive layer 250 and the back plate 260, that is, the back adhesive layer 250 covers the bottom surface of the cell module, and the back plate 260 covers the side of the back adhesive layer 250 away from the cell module.

[0040] Specifically, the photovoltaic cell assembly 200 further includes a frame, and the glass panel 230, the light-transmitting adhesive layer 240, the cell module, the back adhesive layer 250 and the back plate 260 which are sequentially stacked and connected are fixedly connected in the frame.

[0041] It can be understood that the photovoltaic cell unit 220 can be a single-sided crystalline silicon cell, the light-transmitting adhesive layer 240 can be an adhesive layer structure with good light transmittance such as an EVA adhesive layer, EVA is the abbreviation of polyethylene-polyvinyl acetate copolymer, and the EVA adhesive film has good adhesion, durability and light transmittance. The back adhesive layer 250 can be an EVA adhesive layer or other adhesive layer with good adhesion, and the back panel 260 can be an opaque composite material layer, such as a PTP back panel 260, a KPK back panel 260, a TPE back panel 260, etc.

[0042] It is understandable that the fixed photovoltaic power generation device further includes a heat sink 400, which is mounted on the support assembly 100 and covers the bottom surface of the photovoltaic cell assembly 200. The heat sink 400 may be a water cooling plate, in which cooling water is stored for cooling the photovoltaic cell assembly 200.

[0043] Specifically, in addition to being set as a water-cooled plate, the heat sink 400 can also be set as a metal plate structure. The heat exchange efficiency between the photovoltaic cell assembly 200 and the ambient air can be improved through the heat sink 400, thereby improving the heat dissipation performance of the photovoltaic cell assembly 200, and effectively preventing the photovoltaic cell assembly 200 from overheating in a high-temperature environment, and effectively improving the photovoltaic power generation performance of the photovoltaic cell assembly 200, with high photoelectric conversion efficiency.

[0044] It can be understood that a plurality of heat dissipation fins are provided on the side of the heat dissipation plate 400 away from the photovoltaic cell assembly 200. By providing the heat dissipation fins to increase the contact area with the ambient air, the heat release effect of the heat dissipation plate 400 and the heat dissipation fins on the photovoltaic cell assembly 200 can be effectively improved, thereby ensuring the photovoltaic power generation performance of the photovoltaic cell assembly 200.

[0045] It can be understood that the support assembly 100 includes a support leg 110, a column 120 and a support bracket 130. The bottom of the column 120 is locked and connected to the support leg 110, the bottom of the support bracket 130 is rotatably connected to the support leg 110, and the top of the column 120 is rotatably connected to the support bracket 130. The photovoltaic cell assembly 200 is installed on the support bracket 130. By releasing the locking state of the column 120 and the support leg 110, the inclination angle of the support bracket 130 relative to the support leg 110 can be adjusted, thereby adjusting the inclination angle of the photovoltaic cell assembly 200. After the adjustment is completed, the locking structure between the support leg 110 and the column 120 can be re-established.

[0046] Specifically, the support assembly 100 further includes a locking screw 140, a positioning hole 121 matching the locking screw 140 is provided at the bottom of the column 120, and a plurality of locking screw holes 111 matching the locking screw 140 are provided on the support leg 110, and the locking screw 140 is passed through the positioning hole 121 and is threadedly connected to the corresponding locking screw hole 111. According to different needs, the inclination angle of the support bracket 130 can be adjusted by loosening the locking screw 140, and the positioning hole 121 is aligned with the corresponding locking screw hole 111. The position of the support bracket 130 can be locked by tightening the locking screw 140 in the corresponding locking screw hole 111, thereby completing the angle adjustment of the photovoltaic cell assembly 200.

[0047] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A fixed photovoltaic power generation device, It is characterized in that It comprises a support assembly (100), a photovoltaic cell assembly (200) and a converging light-transmitting mirror assembly (300), wherein the photovoltaic cell assembly (200) and the converging light-transmitting mirror assembly (300) are both mounted on the support assembly (100), and the converging light-transmitting mirror assembly (300) is connected to the top surface of the photovoltaic cell assembly (200); The photovoltaic cell assembly (200) comprises a cell frame (210) and a plurality of photovoltaic cell sheet units (220); the cell frame (210) is provided with a plurality of positioning cavities (211) distributed in an array; each photovoltaic cell sheet unit (220) is respectively installed in a corresponding positioning cavity (211); The converging light-transmitting mirror assembly (300) comprises a heightened light-transmitting plate (310) and a plurality of light-transmitting converging units (320); the heightened light-transmitting plate (310) covers the top surface of the photovoltaic cell assembly (200); the light-transmitting converging units (320) are located on a side of the heightened light-transmitting plate (310) away from the photovoltaic cell assembly (200); the light-transmitting converging units (320) are connected in an array; the central optical axis of each light-transmitting converging unit (320) is collinear with the central point of the corresponding photovoltaic cell unit (220); the connection point between each two adjacent light-transmitting converging units (320) is located on the cell frame (210); and the light-transmitting converging units (320) are used to adjust light to propagate in a direction close to the photovoltaic cell unit (220).

2. A fixed photovoltaic power generation device according to claim 1, It is characterized in that The light-transmitting convergence unit (320) is an aspherical convex lens unit.

3. A fixed photovoltaic power generation device according to claim 1, It is characterized in that The light-transmitting convergence unit (320) is a quadrangular pyramid lens unit.

4. A fixed photovoltaic power generation device according to claim 1, It is characterized in that The photovoltaic cell assembly (200) further comprises a glass panel (230), a light-transmitting adhesive layer (240), a back adhesive layer (250) and a back plate (260); the cell frame (210) and each of the photovoltaic cell units (220) constitute a cell module; the top surface of the cell module is sequentially stacked and connected to the light-transmitting adhesive layer (240) and the glass panel (230); and the bottom surface of the cell module is sequentially stacked and connected to the back adhesive layer (250) and the back plate (260).

5. A fixed photovoltaic power generation device according to claim 1, It is characterized in that It also comprises a heat dissipation plate (400), wherein the heat dissipation plate (400) is installed on the support assembly (100), and the heat dissipation plate (400) covers the bottom surface of the photovoltaic cell assembly (200).

6. A fixed photovoltaic power generation device according to claim 1, It is characterized in that The support assembly (100) comprises a support leg (110), a column (120) and a support bracket (130); the bottom of the column (120) is lockedly connected to the support leg (110); the bottom of the support bracket (130) is rotatably connected to the support leg (110); the top of the column (120) is rotatably connected to the support bracket (130); and the photovoltaic cell assembly (200) is mounted on the support bracket (130).

7. A fixed photovoltaic power generation device according to claim 6, It is characterized in that The support assembly (100) further comprises a locking screw (140); a positioning hole (121) matching the locking screw (140) is provided at the bottom of the column (120); the support leg (110) comprises a plurality of locking screw holes (111) matching the locking screw (140); the locking screw (140) is passed through the positioning hole (121) and is threadedly connected to the corresponding locking screw hole (111).

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