A photovoltaic panel

Abstract

The present invention discloses a photovoltaic panel, which belongs to the technical field of photovoltaic panel heat dissipation. The present invention includes a bracket, on which a drainage component and a photovoltaic panel body are provided, and the drainage component is arranged on both sides of the photovoltaic panel body. The drainage component includes a deformable plate body, and the deformable plate body can be deformed according to temperature. When heated, the deformable plate body can form a drainage channel. A wiping component is also provided on the front side of the photovoltaic panel body, and the wiping component can automatically wipe the front side surface of the photovoltaic panel body. The present invention is provided with a drainage component, and a deformable plate body is provided in the drainage component. When heated, the temperature rises to a certain temperature, and the deformed plate body automatically forms a drainage channel. The drainage channel can drain the low-temperature air at the bottom of the back side of the photovoltaic panel body to the vicinity of the photovoltaic panel body, cool the photovoltaic panel body, and improve the power generation efficiency of the photovoltaic panel.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic panel heat dissipation, and in particular to a photovoltaic panel. Background Art

[0002] Photovoltaic panels, also known as solar panels, convert sunlight into electrical energy through the photoelectric effect. This process is not only environmentally friendly and pollution-free, but also has great application potential.

[0003] In actual application scenarios, several or dozens of photovoltaic panels are usually combined to form a photovoltaic panel group to increase power generation.

[0004] When photovoltaic panels are working, only 10%-20% of the solar energy is converted into electricity, and the rest of the solar energy is dissipated in the form of heat. The accumulation of a large number of photovoltaic panels will also cause heat accumulation. The photovoltaic panels will have a lower power generation efficiency under high temperature conditions and will not be able to play a better role in power generation. Summary of the invention

[0005] In view of the above-mentioned shortcomings, the present invention provides a photovoltaic panel, which can effectively improve the power generation efficiency of the photovoltaic panel.

[0006] The present invention protects a photovoltaic panel, including a bracket, on which a drainage component and a photovoltaic panel body are provided, and the drainage component is arranged on both sides of the photovoltaic panel body;

[0007] The drainage assembly includes a deformable plate body, which can be deformed according to temperature, and when heated, the deformable plate body can form a drainage channel;

[0008] The support comprises a horizontal frame and an inclined frame, and the photovoltaic panel body is arranged on the inclined frame;

[0009] A wiping component is also provided on the front side of the photovoltaic panel body, and the wiping component can automatically wipe the front side surface of the photovoltaic panel body;

[0010] One end of the drainage channel is arranged on the side of the photovoltaic panel body, and the other end of the drainage channel is arranged on the bottom of the side of the horizontal frame.

[0011] Furthermore, the deformable plate body includes a first plate body and a second plate body arranged in parallel, the first plate body is connected to the bracket through a first telescopic member, and the second plate body is connected to the side wall of the photovoltaic panel body;

[0012] The first telescopic member can shrink when heated, and can expand when cooled.

[0013] Furthermore, the first plate body and the second plate body are connected via a plurality of flexible connecting sheets, and the drainage channel is formed between adjacent connecting sheets, the first plate body and the second plate body.

[0014] Furthermore, the second plate body is provided with a plurality of heat sinks, and both ends of each heat sink are fixed on the second plate body;

[0015] The heat sink is a double-layer metal sheet structure, the expansion coefficient of the upper metal sheet is smaller than the expansion coefficient of the lower metal sheet, and the upper metal sheet is close to the first plate body;

[0016] When the heat sink is heated, the middle portion of the heat sink can bend toward the first plate body.

[0017] Furthermore, a heat dissipation component is provided on the back side of the photovoltaic panel body, and the heat dissipation component can realize both air convection cooling and liquid direct cooling.

[0018] Furthermore, the heat dissipation assembly includes a plurality of strip plates staggered in the vertical direction.

[0019] Furthermore, the heat dissipation assembly also includes a water storage box and a water absorption rope;

[0020] The water storage box is arranged at the bottom of the back side of the photovoltaic panel body;

[0021] Each of the strip plates is arranged obliquely;

[0022] The water absorbing rope is arranged in a serpentine shape on the back side of the photovoltaic panel body, and one end of the water absorbing rope is arranged in the water storage box.

[0023] Furthermore, the wiping assembly comprises a horizontally arranged wiping strip, and both ends of the wiping strip are respectively connected to a pulling member through ropes; the pulling member can pull the rope when heated.

[0024] Furthermore, the pulling member includes a sliding block, a second telescopic member and a guide wheel;

[0025] The slider can slide on the horizontal frame, and the slider is connected to the horizontal frame via the second telescopic member, and the second telescopic member can expand when heated and contract when cooled;

[0026] The guide wheels are distributed on the slider and the bracket.

[0027] Beneficial effect: The present invention provides a drainage component, and a deformable plate body is provided inside the drainage component. When heated, the temperature rises to a certain temperature, and the deformed plate body automatically forms a drainage channel. Since the temperature on the back side of the photovoltaic panel body is lower than the temperature on the front side facing the sun, and at the same time, the temperature at the lower part is lower than the temperature at the higher part, the drainage channel can drain the low-temperature air at the bottom of the back side of the photovoltaic panel body to the vicinity of the photovoltaic panel body, cool the photovoltaic panel body, and improve the power generation efficiency of the photovoltaic panel. By arranging the drainage components on both sides of the photovoltaic panel body, since the temperature at the edge of the photovoltaic panel body is higher than the temperature at the center, the drainage components can drain the low-temperature gas to both sides of the photovoltaic panel body, which can further reduce the temperature of the photovoltaic panel body and improve the power generation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] in:

[0030] Figure 1 It is a schematic diagram of the overall structure of a photovoltaic panel at an angle in a first state in one embodiment of the present invention;

[0031] Figure 2 for Figure 1 A partial enlarged view of part A;

[0032] Figure 3 It is a schematic diagram of the overall structure of a photovoltaic panel in a first state from another angle in one embodiment of the present invention;

[0033] Figure 4 A schematic diagram of the positive side of a photovoltaic panel in a first state in one embodiment of the present invention;

[0034] Figure 5 A schematic diagram of the back side of a photovoltaic panel in a first state according to an embodiment of the present invention;

[0035] Figure 6 It is a schematic diagram of the overall structure of a photovoltaic panel in a second state in one embodiment of the present invention;

[0036] Figure 7 for Figure 6 A partial enlarged view of part B;

[0037] Figure 8 It is a horizontal cross-sectional view of a photovoltaic panel in a second state in one embodiment of the present invention;

[0038] In the figure, 1, bracket; 11, horizontal frame; 12, inclined frame;

[0039] 2. drainage assembly; 21. deformable plate; 211. first plate; 212. second plate; 213. connecting piece; 22. first telescopic member; 23. heat sink;

[0040] 3. Photovoltaic panel body;

[0041] 4. Wiping assembly; 41. Pulling member; 411. Sliding block; 412. Second telescopic member; 413. Guide wheel; 42. Rope; 43. Wiping strip;

[0042] 5. heat dissipation component; 51. strip plate; 52. water absorption rope; 53. water storage box. DETAILED DESCRIPTION

[0043] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] refer to Figure 1 to Figure 8 The present invention discloses a photovoltaic panel, which can be used alone or in combination with a plurality of photovoltaic panels to form a photovoltaic panel group. Preferably, the photovoltaic panels are combined to form a photovoltaic panel group for use. When the photovoltaic panel or photovoltaic panel group is in use, the bottom needs to be fixed to the ground or roof with a rack so that there is a gap between the photovoltaic panel and the ground or roof. The photovoltaic panel includes a bracket 1, on which a drainage component 2 and a photovoltaic panel body 3 are provided, and the drainage component 2 is arranged on both sides of the photovoltaic panel body 3. The photovoltaic panel body 3 is a common commercially available photovoltaic panel.

[0045] The drainage component 2 includes a deformable plate body 21, which can deform according to the temperature. When heated, the deformable plate body 21 can form a drainage channel. One end of the drainage channel is set on the side of the photovoltaic panel body 3, and the other end of the drainage channel is set on the back bottom of the photovoltaic panel body 3.

[0046] The present invention sets a drainage component 2, and a deformable plate body 21 is arranged inside the drainage component 2. When heated, the temperature rises to a certain temperature, and the deformable plate body 21 automatically forms a drainage channel; when the temperature drops to a certain level, the drainage channel disappears. Since the temperature on the back side of the photovoltaic panel body 3 is lower than the temperature on the front side facing the sun, and at the same time, the temperature at the lower part is lower than the temperature at the higher part, the drainage channel can drain the low-temperature air at the bottom of the back side of the photovoltaic panel body 3 to the vicinity of the photovoltaic panel body 3, cool the photovoltaic panel body 3, and improve the power generation efficiency of the photovoltaic panel. By setting the drainage component 2 on both sides of the photovoltaic panel body 3, since the temperature at the edge of the photovoltaic panel body 3 is higher than the temperature at the center, the drainage component 2 drains the low-temperature gas to both sides of the photovoltaic panel body 3, which can further reduce the temperature of the photovoltaic panel body 3 and improve the power generation efficiency.

[0047] refer to Figure 3 , 7 and 8. In a specific embodiment, the deformable plate body 21 includes a first plate body 211 and a second plate body 212 arranged in parallel, the first plate body 211 is connected to the bracket 1 through a first telescopic member 22, and the second plate body 212 is connected to the side wall of the photovoltaic panel body 3; the first telescopic member 22 can shrink when heated, and can expand when cooled.

[0048] The first plate 211 in this embodiment can move in a direction away from or close to the second plate 212. The first telescopic member 22 can be selected as a memory alloy spring. The memory alloy spring is a special type of spring that can expand and contract when the temperature changes. The memory alloy spring is usually made of nickel-titanium alloy, which can remember its original shape and return to the shape when the temperature changes. The memory alloy spring is shortened by heating and returns to its original shape after cooling. In this embodiment, when the first telescopic member 22 is raised to a certain temperature, it shrinks and pulls the first plate 211 to form a drainage channel, and the drainage channel can drain low-temperature air to the edge of the photovoltaic panel body 3 to cool the photovoltaic panel body 3. When the first telescopic member 22 is lowered to a certain temperature, it stretches and pushes the first plate 211 to make the drainage channel disappear. Reduce the drainage of low-temperature air, so that the photovoltaic panel body 3 works at a suitable temperature. The deformable plate 21 in this embodiment not only has a heat dissipation function, but also has a function of preventing excessive heat loss. The photovoltaic panel body 3 can work at a suitable temperature and improve the power generation efficiency.

[0049] refer to Figure 7 Or 8, in a specific embodiment, the first plate body 211 and the second plate body 212 are connected by a plurality of flexible connecting sheets 213, and a drainage channel is formed between adjacent connecting sheets 213, the first plate body 211 and the second plate body 212.

[0050] In this embodiment, a plurality of connecting pieces 213 are provided, and the flexible connecting pieces 213 can be stretched when the first plate 211 is away from the second plate 212. A square drainage channel is formed between the adjacent connecting pieces 213, the first plate 211 and the second plate 212. Figure 8 As shown in , the drainage channels are independent of each other. The purpose of setting multiple drainage channels is to drain the low-temperature air to both sides of the photovoltaic panel body 3; the other is to disperse the low-temperature air and effectively cool down both sides of the photovoltaic panel body 3.

[0051] refer to Figure 7 In a specific embodiment, a plurality of heat sinks 23 are provided on the second plate body 212, and both ends of each heat sink 23 are fixed on the second plate body 212. The heat sink 23 is a double-layer metal sheet structure, the expansion coefficient of the upper metal sheet is smaller than the expansion coefficient of the lower metal sheet, and the upper metal sheet is close to the first plate body 211. When the heat sink 23 is heated, the middle part of the heat sink 23 can be bent toward the direction of the first plate body 211. Among them, the heat sink 23 is arranged in the drainage channel, and according to actual needs, the heat sink 23 can be one piece or multiple pieces. Preferably, 1, 2 or 3 heat sinks 23 are arranged in each drainage channel.

[0052] In this embodiment, a heat sink 23 is provided. At room temperature or a relatively low temperature, the heat sink 23 is close to a flat plate. When the temperature rises to a certain temperature, the expansion speed of the lower metal sheet is faster than that of the upper metal sheet. The heat sink 23 is bent to form an arch-like shape. Of course, the curvature of the arch can be different depending on the actual temperature. Figure 7 The arc may be the same or similar large arc as in the above, or may be a small arc. The arched heat sink 23 can effectively increase the contact with the low-temperature air in the drainage channel, thereby cooling the heat sink 23. After cooling, the heat sink 23 can contact and cool the second plate 212, thereby cooling the photovoltaic panel body 3. When there are multiple heat sinks 23, the heat dissipation area is significantly increased, which can effectively dissipate the heat of the photovoltaic panel body 3 and achieve cooling of the photovoltaic panel body 3.

[0053] refer to Figure 3 Or 5, in a specific embodiment, a heat dissipation component 5 is provided on the back side of the photovoltaic panel body 3, and the heat dissipation component 5 can realize both air convection cooling and liquid direct cooling. The two cooling methods can effectively reduce the temperature of the photovoltaic panel body 3.

[0054] refer to Figure 3 or Figure 5In a specific embodiment, the heat dissipation assembly 5 includes a plurality of strip plates 51 staggered in the vertical direction. The strip plates 51 can increase the area of ​​the back side of the photovoltaic panel body 3, increase the contact area with the air, and effectively achieve heat dissipation. The purpose of the staggered arrangement is to enable the cold air at the bottom to form a vortex when passing through the strip plates 51, and then fully collide with the strip plates 51 to achieve heat dissipation.

[0055] refer to Figure 3 Or 5, in a specific embodiment, the heat dissipation component 5 further includes a water storage box 53 and a water absorption rope 52. The water storage box 53 is arranged at the bottom of the back side of the photovoltaic panel body 3. One end of each strip plate 51 is inclined toward the bottom end of the photovoltaic panel body 3. The water absorption rope 52 is arranged in a serpentine shape on the back side of the photovoltaic panel body 3, and one end of the water absorption rope 52 is arranged in the water storage box 53. The water absorption rope 52 can be a hemp rope or a cotton rope.

[0056] This embodiment can collect and store rainwater by setting a water storage box 53. Among them, one end of each strip plate 51 is tilted downward. Since the strip plates 51 are staggered in the vertical direction, when it rains, the rainwater on the previous strip plate 51 flows to the next strip plate 51 under the action of gravity, and finally flows into the water storage box 53. During the flow of rainwater, some particles such as gravel will adhere to the upper surface of the strip plate 51. The water that finally enters the water storage box 53 can be simply filtered, so that the capacity of the water storage box 53 will not be reduced. A filter net is also provided on the top side of the water storage box 53 to further filter the rainwater and prevent larger impurities from entering the water storage box 53.

[0057] refer to Figure 3 Or 8, in a specific embodiment, the support 1 includes a horizontal frame 11 and an inclined frame 12, and the horizontal frame 11 and the inclined frame 12 are both rectangular frames. One side of the horizontal frame 11 and the inclined frame 12 overlap.

[0058] The photovoltaic panel body 3 is arranged on the tilt frame 12. The front side of the photovoltaic panel body 3 is also provided with a wiping assembly 4, which can automatically wipe the front side surface of the photovoltaic panel body 3. The front side of the photovoltaic panel body 3 is the side facing the sun.

[0059] In this embodiment, the wiping assembly 4 can effectively wipe away the dust on the front side of the photovoltaic panel body 3, so that the photovoltaic panel body 3 is kept clean, thereby ensuring the power generation efficiency of the photovoltaic panel body 3. The automatic wiping does not require manual participation, reducing labor.

[0060] refer to Figure 1 , 2 , 4, 6 and 7, in a specific embodiment, the wiping assembly 4 includes a horizontally arranged wiping strip 43, both ends of which are connected to the pulling member 41 through ropes 42; the pulling member 41 can pull the rope 42 when heated.

[0061] The wiping strip 43 is initially located at the bottom of the front side of the photovoltaic panel body 3. By setting the pulling member 41, the rope 42 can be pulled according to different temperatures. Then, when the pulling member 41 is heated and the temperature rises to a certain temperature, the pulling member 41 can pull the rope 42, so that the wiping strip 43 can move from the bottom to the top. Wiping is achieved to remove dust or obstructions on the surface of the photovoltaic panel body 3. The front side of the photovoltaic panel body 3 can effectively absorb sunlight to ensure power generation efficiency.

[0062] refer to Figure 7 and 8 In a specific embodiment, the pulling member 41 includes a slider 411 , a second telescopic member 412 and a guide wheel 413 .

[0063] The slider 411 can slide on the horizontal frame 11, and the slider 411 is connected to the horizontal frame 11 through a second telescopic member 412. The second telescopic member 412 can be extended when heated and can be contracted when cooled. The guide wheels 413 are distributed on the slider 411 and the bracket 1.

[0064] The pulling member 41 in this embodiment is arranged on the horizontal frame 11, and a groove is arranged on the inclined frame 12. A rope 42 is arranged in the groove, and the groove can fully limit and fix the rope 42. The guide wheels 413 are arranged on the slider 411, the horizontal frame 11 and the inclined frame 12. One end of the rope 42 is fixed on the horizontal frame 11, and the other end is connected to the wiping strip 43 through the guide wheel 413. The slider 411 can move on the crossbeam of the horizontal frame 11, Figure 8 The two middle top beams are horizontal beams, and the vertical beams are perpendicular to the horizontal beams. The vertical beams are set in the middle of the horizontal frame 11. The slider 411 is connected to the vertical beam through a second telescopic member 412. The second telescopic member 412 is a temperature-dependent spring. It stretches when the temperature rises to a certain temperature and shortens when the temperature drops to a certain temperature. Preferably, there are two sliders 411, distributed on both sides of the vertical beam. Each slider 411 is provided with two guide wheels 413, and the vertical beam is provided with two guide wheels 413. Figure 8 Taking the rope 42 on the left side as an example, one end of the rope 42 is fixed on the vertical beam, and the other end is connected to the left end of the wiping strip 43 through a guide wheel 413 on the slider 411, a guide wheel 413 on the vertical beam, another guide wheel 413 on the slider 411, and a guide wheel 413 on the tilting frame 12. In this way, after the slider 411 moves, the stroke of the wiping strip 43 is four times that of the slider 411, effectively realizing the wiping of the photovoltaic panel body 3.

[0065] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A photovoltaic panel, characterized in that: It comprises a bracket (1), on which a drainage component (2) and a photovoltaic panel body (3) are provided, and the drainage component (2) is arranged on both sides of the photovoltaic panel body (3); The drainage component (2) comprises a deformable plate (21), wherein the deformable plate (21) can be deformed according to temperature, and when heated, the deformable plate (21) can form a drainage channel; The support (1) comprises a horizontal frame (11) and an inclined frame (12), and the photovoltaic panel body (3) is arranged on the inclined frame (12); A wiping assembly (4) is also provided on the front side of the photovoltaic panel body (3), and the wiping assembly (4) can automatically wipe the front side surface of the photovoltaic panel body (3); One end of the drainage channel is arranged on the side of the photovoltaic panel body (3), and the other end of the drainage channel is arranged on the bottom of the side of the horizontal frame (11); The deformable plate body (21) comprises a first plate body (211) and a second plate body (212) arranged in parallel, the first plate body (211) being connected to the bracket (1) via a first telescopic member (22), and the second plate body (212) being connected to a side wall of the photovoltaic panel body (3); The first telescopic member (22) can shrink when heated, and can expand when cooled; The first plate body (211) and the second plate body (212) are connected via a plurality of flexible connecting sheets (213), and the drainage channel is formed between adjacent connecting sheets (213), the first plate body (211) and the second plate body (212); A plurality of heat sinks (23) are provided on the second plate body (212), and two ends of each heat sink (23) are fixed on the second plate body (212); The heat sink (23) is a double-layer metal sheet structure, the expansion coefficient of the upper metal sheet is smaller than the expansion coefficient of the lower metal sheet, and the upper metal sheet is close to the first plate body (211); When the heat sink (23) is heated, the middle portion of the heat sink (23) can bend towards the first plate body (211).

2. The photovoltaic panel according to claim 1, characterized in that: A heat dissipation component (5) is provided on the back side of the photovoltaic panel body (3), and the heat dissipation component (5) can realize both air convection cooling and liquid direct cooling.

3. The photovoltaic panel according to claim 2, characterized in that: The heat dissipation assembly (5) comprises a plurality of strip plates (51) arranged alternately in the vertical direction.

4. The photovoltaic panel according to claim 3, characterized in that: The heat dissipation component (5) further comprises a water storage box (53) and a water absorption rope (52); The water storage box (53) is arranged at the bottom of the back side of the photovoltaic panel body (3); Each of the strip plates (51) is arranged obliquely; The water absorbing rope (52) is arranged in a serpentine shape on the back side of the photovoltaic panel body (3), and one end of the water absorbing rope (52) is arranged in the water storage box (53).

5. The photovoltaic panel according to claim 1, characterized in that: The wiping assembly (4) comprises a horizontally arranged wiping strip (43), wherein two ends of the wiping strip (43) are respectively connected to a pulling member (41) via ropes (42); the pulling member (41) can pull the rope (42) when heated.

6. The photovoltaic panel according to claim 5, characterized in that: The pulling member (41) comprises a sliding block (411), a second telescopic member (412) and a guide wheel (413); The slider (411) can slide on the horizontal frame (11), the slider (411) is connected to the horizontal frame (11) via the second telescopic member (412), and the second telescopic member (412) can expand when heated and contract when cooled; The guide wheels (413) are distributed on the slider (411) and the bracket (1).

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