Photovoltaic power generation protection device

Abstract

This utility model relates to the field of photovoltaic protection technology, specifically to a photovoltaic power generation protection device, including a solar panel. A heat-absorbing plate is installed on the back of the solar panel, and multiple equally spaced channels are formed within the heat-absorbing plate. End plates are installed at the ends of the heat-absorbing plate at both ends of the channels. The front of the heat-absorbing plate is in close contact with the back of the solar panel. An inlet and an outlet are respectively provided on the back of the heat-absorbing plate near both ends of each channel. An inlet pipe and an outlet pipe are respectively provided on the back of a support near both ends of the heat-absorbing plate, and the inlet and outlet pipes are connected to the inlet and outlet, respectively. This utility model absorbs heat from the solar panel by using a heat-absorbing plate on the back of the solar panel, thereby controlling the temperature of the solar panel and reducing the risk of spontaneous combustion caused by the combined heating of high-temperature environments and solar spots, thus providing protection for photovoltaic power generation.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic protection technology, specifically to a photovoltaic power generation protection device. Background Technology

[0002] Photovoltaic power generation is a clean and renewable energy technology that utilizes the photovoltaic effect of semiconductor materials to directly convert sunlight into electricity. A photovoltaic power generation system includes solar panels, a controller, and an inverter. Photovoltaic power generation requires sunlight to operate. In high-temperature environments, such as summer, continuous exposure to sunlight can cause the temperature of the entire solar panel to rise. This is especially true when the solar cells are shaded by bird droppings, leaves, or dust. The shaded areas cannot generate electricity and instead act as "resistors" in the circuit, consuming electrical energy and generating a large amount of heat. The heat generated in these hot spots, combined with the ambient temperature, can lead to excessively high local temperatures, posing a significant risk of spontaneous combustion. If heat dissipation or effective measures are not taken in time, irreparable damage may result. Utility Model Content

[0003] To achieve the above objectives, this utility model specifically adopts the following technical solution: A photovoltaic power generation protection device includes a solar panel, a heat absorption plate installed on the back of the solar panel, multiple equally spaced channels opened in the heat absorption plate, end plates installed at the ends of the heat absorption plate at both ends of the channels, the front of the heat absorption plate being in close contact with the back of the solar panel, and an inlet and an outlet being opened on the back of the heat absorption plate near the two ends of each channel, respectively. An inlet pipe and an outlet pipe are respectively installed on the back of the bracket near the two ends of the heat absorption plate, and the inlet pipe and outlet pipe are connected to the inlet and outlet respectively.

[0004] Furthermore, multiple interconnected branch pipes are fixed to both the inlet and outlet pipes, and these branch pipes are respectively connected to the inlet and outlet of the heat absorber plate. The branch pipes are used to distribute the water flow, ensuring that each channel receives a sufficient amount of water.

[0005] Furthermore, a support frame is provided on the back of the solar panel, with the solar panel mounted on the front of the support frame. The support frame is tilted, and a column is fixed at the center of the back of the support frame. A heat absorber plate is installed between the back of the solar panel and the support frame. The support frame provides support for both the solar panel and the heat absorber plate.

[0006] Furthermore, the inlet is located above the outlet. After water enters, it flows downwards by gravity within the channel, thus flowing into the outlet pipe.

[0007] Furthermore, a U-shaped cover is installed on the support on the back of the heat absorber plate, and the heat absorber plate is installed with the U-shaped cover. A heat insulation pad is placed between the back of the heat absorber plate and the U-shaped cover. The heat insulation pad reduces the impact of the external ambient temperature, especially high external ambient temperature, on the heat absorption of the heat absorber plate, ensuring the heat absorption effect of the heat absorber plate on the solar power generation panel.

[0008] Furthermore, multiple U-shaped tubes are fixed to the end plate at the water inlet position. The two ends of the U-shaped tubes pass through the end plate and connect to two concentric channels. A photovoltaic optimizer is fixed at the top center of the back of the solar panel. The positions of the U-shaped tubes and the photovoltaic optimizer are staggered. The U-shaped tubes increase the heat absorption surface of the water and can also cool the photovoltaic optimizer.

[0009] Furthermore, the bracket is equipped with pipe clamps, and both the inlet and outlet pipes are supported by these clamps. Connecting pipe one and connecting pipe two are fixed to the middle of the inlet and outlet pipes, respectively. A water supply pipe and a drain pipe are respectively installed at the bottom of connecting pipe one and connecting pipe two, and the bottom ends of connecting pipe one and connecting pipe two are fixed to the water supply pipe and drain pipe, respectively. Insulation is provided on the inlet pipe, connecting pipe one, and water supply pipe to ensure that the temperature of the water entering the channel is low, thereby ensuring the heat absorption effect of the water.

[0010] Furthermore, a bracket is fixed to the column, and the water supply pipe and drain pipe are supported on the bracket. The water supply pipe and drain pipe can be laid on the ground or supported by the bracket, depending on the installation location.

[0011] The beneficial effects of this utility model are as follows: 1. This utility model uses a heat-absorbing plate on the back of a solar panel to absorb the heat from the solar panel, thereby controlling the temperature of the solar panel, reducing the risk of spontaneous combustion caused by the combined heating of solar spots in a high-temperature environment, and thus providing protection for photovoltaic power generation.

[0012] 2. In this utility model, the channels inside the heat absorption plate are arranged from top to bottom. When the water flows, it can flow out by gravity. Moreover, the arrangement of multiple channels increases the amount of heat absorbed by the water in the channels, thereby improving the heat absorption effect.

[0013] 3. In this utility model, by setting a U-shaped tube to cover the uncovered parts of the heat absorption plate, the heat absorption effect of the entire solar panel is increased. At the same time, the U-shaped tube can also absorb the heat around the photovoltaic optimizer, thereby indirectly reducing the temperature of the photovoltaic optimizer and further maintaining the stability of photovoltaic power generation.

[0014] 4. In this utility model, the water supply pipe and the drainage pipe can provide centralized water supply or drainage for a row of photovoltaic arrays at one time, which facilitates the application of heat absorption panels in large photovoltaic arrays. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the arrangement of the inlet pipe and outlet pipe in this utility model; Figure 4 This is a perspective view of the heat-absorbing plate in this utility model; Figure 5 This is a schematic diagram of the U-shaped tube arrangement in this utility model; Figure 6 This is a schematic diagram of the heat insulation pad in this utility model.

[0016] Reference numerals in the attached diagram: 1. Solar panel; 2. Support frame; 3. Column; 4. Photovoltaic optimizer; 5. Heat absorber; 6. U-shaped cover; 7. Heat insulation pad; 8. Channel; 9. End plate; 10. Inlet; 11. Outlet; 12. U-shaped pipe; 13. Inlet pipe; 14. Connecting pipe one; 15. Outlet pipe; 16. Connecting pipe two; 17. Diversion pipe; 18. Water supply pipe; 19. Drainage pipe; 20. Bracket; 21. Pipe clamp. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0018] This application provides a photovoltaic power generation protection device, mainly addressing the problem that the heat generated in the hot spot area of ​​solar panels, combined with the ambient temperature, leads to excessively high local temperatures and a high risk of spontaneous combustion. The following technical solution is provided, which will be discussed in conjunction with... Figures 1-6 Please provide a detailed explanation: A photovoltaic power generation protection device includes a solar panel 1, a bracket 2 on the back of the solar panel 1, the solar panel 1 being mounted on the front of the bracket 2 by bolts, the bracket 2 being tilted, the tilt angle being different depending on the current installation location, for example, when the current installation location is in a low latitude region of 0° to 30° north and south latitude, the tilt angle is 10°-20°, when the current installation location is in a mid-to-high latitude region of 30° to 60° north and south latitude, the tilt angle is the local latitude minus 10°-15°, when the current installation location is in a high latitude region of 60° to 90° north and south latitude, the tilt angle is about 50°, and a column 3 is welded and fixed at the middle position of the back of the bracket 2; A heat-absorbing plate 5 is installed between the back of the solar panel 1 and the bracket 2. The heat-absorbing plate 5 is made of aluminum or copper. Multiple channels 8 with equal spacing are opened in the heat-absorbing plate 5. End plates 9 are installed at the ends of the heat-absorbing plate 5 at both ends of the channels 8 by bolts. The front of the heat-absorbing plate 5 is in close contact with the back of the solar panel 1. A water inlet 10 and a water outlet 11 are opened on the back of the heat-absorbing plate 5 near the two ends of each channel 8. The water inlet 10 is located above the water outlet 11. On the back of the bracket 2, near the two ends of the heat absorber plate 5, there are water inlet pipes 13 and water outlet pipes 15 respectively. Multiple connecting branch pipes 17 are welded and fixed on the water inlet pipes 13 and water outlet pipes 15 respectively. The branch pipes 17 on the water inlet pipes 13 and water outlet pipes 15 are respectively connected to the water inlet 10 and water outlet 11 of the heat absorber plate 5.

[0019] When in use, cooling water is input from the inlet pipe 13. The water enters the inlet 10 through the inlet pipe 13 and the branch pipe 17 connected to the inlet pipe 13, and then flows into each channel 8 of the heat absorption plate 5. Since the inlet 10 is located above the outlet 11, under the action of gravity, the water flows downward in the channel 8 into the branch pipe 17 connected to the outlet pipe 15 and the outlet pipe 15, and then into the outlet pipe 15. When the water flows in channel 8, the cooler water absorbs heat from the heat absorber plate 5. After the heat absorber plate 5 absorbs the heat, it becomes a cooler object. Based on the thermodynamic law that heat flows from high to low, when the heat of the solar panel 1 is higher than the heat contained in the current heat absorber plate 5, the heat of the solar panel 1 is transferred to the heat absorber plate 5. The heat transferred to the heat absorber plate 5 is then absorbed by the continuously flowing water. Ultimately, the water indirectly absorbs heat and cools the solar panel 1 through the heat absorber plate 5. Heat is absorbed and cooled from the back of the solar panel 1 to control the temperature and reduce the risk of spontaneous combustion of the solar panel 1 caused by high temperature environment or heat generation in the superimposed solar spot area on the surface of the solar panel, thereby providing protection for the entire photovoltaic power generation.

[0020] In some embodiments, a U-shaped cover 6 is bolted to the support 2 on the back of the heat absorber plate 5, the heat absorber plate 5 is bolted to the U-shaped cover 6, and a heat insulation pad 7 is provided between the back of the heat absorber plate 5 and the U-shaped cover 6.

[0021] When the ambient temperature is high, the high ambient heat will be continuously absorbed by the heat absorber plate 5. Since the heat absorption of water is limited, the more ambient heat is absorbed, the less heat is indirectly absorbed by the solar power generation panel 1. The heat insulation pad 7 can be set to separate the heat absorber plate 5 from the environment, so as to reduce the impact of ambient heat on the heat absorber plate 5, so that the heat absorber plate 5 mainly absorbs the heat of the solar power generation panel 1, thereby improving the heat dissipation effect.

[0022] In some embodiments, a plurality of U-shaped tubes 12 are welded and fixed on the end plate 9 at the water inlet 10. The two ends of the U-shaped tubes 12 pass through the end plate 9 and are connected to two channels 8 with the same center. A photovoltaic optimizer 4 is fixed at the top center of the back of the solar power panel 1. The position of the U-shaped tubes 12 is offset from the position of the photovoltaic optimizer 4.

[0023] The photovoltaic optimizer 4 is individually connected to each solar panel, adjusting its operating voltage and current in real time to reduce power loss caused by shading, dust, or component aging. It is small in size and typically installed close to the back of the solar panel, working in conjunction with an inverter to form an "optimizer + inverter" system. The presence of the photovoltaic optimizer 4 prevents the heat absorber 5 from covering the top back of the solar panel 1. The U-shaped tube 12 covers these areas. When water enters the channel 8, some water enters the U-shaped tube 12, which then absorbs heat from the uncovered areas of the heat absorber 5. Simultaneously, it absorbs heat from the surrounding area of ​​the photovoltaic optimizer 4, indirectly lowering its temperature and preventing high temperatures from affecting its stable operation.

[0024] In some embodiments, a pipe buckle 21 is installed on the bracket 2 by bolts. The inlet pipe 13 and the outlet pipe 15 are both supported by the pipe buckle 21. A connecting pipe 14 and a connecting pipe 26 are welded and fixed to the middle position of the inlet pipe 13 and the outlet pipe 15, respectively. A water supply pipe 18 and a drain pipe 19 are respectively provided at the bottom of the connecting pipe 14 and the connecting pipe 2. The bottom ends of the connecting pipe 14 and the connecting pipe 2 are welded and fixed to the water supply pipe 18 and the drain pipe 19 and are internally connected.

[0025] When multiple solar panels 1 form an array, the water supply and drainage between the arrays are provided by the water supply pipe 18 and the drainage pipe 19, respectively. The water supply is pressure-driven, and the water is pumped into the inlet pipe 13 through the connecting pipe 14 by pressurization. The drainage is natural, and the water flows into the drainage pipe 19 by gravity through the connecting pipe 2 16.

[0026] In some embodiments, a bracket 20 is welded and fixed on the column 3, and the water supply pipe 18 and the drain pipe 19 are supported on the bracket 20.

[0027] The bracket 20 can lift the water supply pipe 18 and the drainage pipe 19 off the ground, and at the same time connect and support the photovoltaic array bracket 2 and the column 3 to maintain the overall photovoltaic array.

[0028] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A photovoltaic electricity generation protection device comprising a solar electricity generation panel (1), characterized in that, The solar power panel (1) has a heat absorption plate (5) installed on its back. The heat absorption plate (5) has multiple channels (8) with equal spacing. The heat absorption plate (5) has end plates (9) installed at both ends of the channels (8). The front of the heat absorption plate (5) is close to the back of the solar power panel (1). The back of the heat absorption plate (5) is provided with an inlet (10) and an outlet (11) near the two ends of each channel (8). The back of the bracket (2) is provided with an inlet pipe (13) and an outlet pipe (15) near the two ends of the heat absorption plate (5). The inlet pipe (13) and the outlet pipe (15) are connected to the inlet (10) and the outlet (11) respectively.

2. A photovoltaic power generation protection device according to claim 1, characterized by, Multiple interconnected branch pipes (17) are fixed on the inlet pipe (13) and the outlet pipe (15). The branch pipes (17) on the inlet pipe (13) and the outlet pipe (15) are respectively connected to the inlet (10) and the outlet (11) of the heat absorption plate (5).

3. The photovoltaic power generation protection device according to claim 1, characterized in that, The solar power panel (1) has a support (2) on its back side. The solar power panel (1) is installed on the front side of the support (2). The support (2) is tilted. A column (3) is fixed in the middle of the back side of the support (2). The heat absorption plate (5) is installed between the back side of the solar power panel (1) and the support (2).

4. A photovoltaic power generation protection device according to claim 2, characterized by, The inlet (10) is located above the outlet (11).

5. A photovoltaic power generation protection device according to claim 3, characterized by, A U-shaped cover (6) is installed on the bracket (2) on the back of the heat-absorbing plate (5). The heat-absorbing plate (5) and the U-shaped cover (6) are installed together. A heat insulation pad (7) is provided between the back of the heat-absorbing plate (5) and the U-shaped cover (6).

6. A photovoltaic power generation protection device according to claim 1, characterized by, Multiple U-shaped tubes (12) are fixed on the end plate (9) at the water inlet (10). The two ends of the U-shaped tubes (12) pass through the end plate (9) and are connected to two channels (8) with the same center. A photovoltaic optimizer (4) is fixed at the top center of the back of the solar power panel (1). The position of the U-shaped tubes (12) is offset from the position of the photovoltaic optimizer (4).

7. A photovoltaic power generation protection device according to claim 3, characterized by The bracket (2) is equipped with a pipe buckle (21). The inlet pipe (13) and the outlet pipe (15) are both supported by the pipe buckle (21). The middle positions of the inlet pipe (13) and the outlet pipe (15) are respectively fixed with a connecting pipe one (14) and a connecting pipe two (16). The bottom of the connecting pipe one (14) and the connecting pipe two (16) are respectively provided with a water supply pipe (18) and a drain pipe (19). The bottom ends of the connecting pipe one (14) and the connecting pipe two (16) are fixed with the water supply pipe (18) and the drain pipe (19).

8. A photovoltaic power generation protection device according to claim 7, characterized by A bracket (20) is fixed on the column (3), and the water supply pipe (18) and the drain pipe (19) are supported on the bracket (20).

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