Anti-dust-deposition photovoltaic module and frame thereof

Abstract

The invention relates to the technical field of photovoltaic modules, and discloses an anti-dust-deposition photovoltaic module and a frame thereof.The photovoltaic module comprises a photovoltaic module body, the photovoltaic module body comprises a breathable layer, a heat conduction layer, a battery piece layer, a light condensation layer, a protection layer and a hydrophobic layer, the heat conduction layer is fixed to the surface of the breathable layer through an adhesive film, and the heat conduction layer is fixed to the surface of the hydrophobic layer through the adhesive film; the battery piece layer is fixedly connected with the side, away from the breathable layer, of the heat conduction layer through an adhesive film. According to the invention, the vertical side of the connecting part of the photovoltaic module frame is provided with a plurality of inverted-splayed rainwater diversion trenches, and the diversion trenches can make full use of the special shapes of themselves to quickly and efficiently guide rainwater to flow down along a specific direction in rainy days, thereby greatly accelerating the drainage speed of the rainwater, preventing the rainwater from remaining on the short side of the photovoltaic module, and improving the service life of the photovoltaic module. Because the rainwater is rapidly discharged, the condition of dust residue after the rainwater is dried up is reduced, the influence of dust on the photovoltaic module is reduced from the source, the cleanliness of the photovoltaic module is guaranteed, and the good power generation performance of the photovoltaic module is maintained.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic modules, and specifically to an anti-dust-accumulation photovoltaic module and its frame. Background Art

[0002] In the current photovoltaic industry, the efficient and stable operation of photovoltaic modules is crucial for the sustainable supply of energy. However, rainy weather brings many troubles to photovoltaic modules. In rainy weather, rainwater is extremely likely to remain on the short sides of photovoltaic modules. When this remaining rainwater dries up, a large amount of dust will be left on the surface of the modules. The accumulation of this dust not only affects the appearance of photovoltaic modules, but also has a serious negative impact on their performance.

[0003] On the one hand, the dust covering the surface of photovoltaic modules will block the effective irradiation of sunlight, resulting in some areas being unable to receive light for photoelectric conversion normally, and then causing some parts of the photovoltaic modules not to generate electricity, greatly reducing the power generation efficiency of photovoltaic modules and affecting the electric energy output of the entire photovoltaic power generation system. On the other hand, for double-glass photovoltaic panels, the shadow areas formed by dust accumulation will generate hot spot effects under light. The hot spot effects will cause the local temperature of the photovoltaic panels to be too high. Long-term accumulation may lead to damage of the double-glass photovoltaic panels due to thermal stress, seriously shortening the service life of photovoltaic modules, increasing the cost of photovoltaic power generation and the difficulty of maintenance. At present, most of the existing designs of photovoltaic module frames do not fully consider the problems of rainwater drainage and anti-dust-accumulation, and cannot effectively solve a series of problems caused by rainwater residue and dust accumulation. Therefore, we propose an anti-dust-accumulation photovoltaic module and its frame. Summary of the Invention

[0004] (1) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the present invention provides an anti-dust-accumulation photovoltaic module and its frame, which solves the problem of easy dust residue on existing photovoltaic modules.

[0006] (2) Technical Solutions

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions: A dust-proof photovoltaic module, comprising a photovoltaic module body, the photovoltaic module body includes a breathable layer, a heat-conducting layer, a battery cell layer, a light-concentrating layer, a protective layer, and a hydrophobic layer. The heat-conducting layer is fixed on the surface of the breathable layer through a glue film. The battery cell layer is fixedly connected to the side of the heat-conducting layer away from the breathable layer through a glue film. The light-concentrating layer is fixedly connected to the side of the battery cell layer away from the heat-conducting layer through a glue film. The protective layer is fixedly connected to the side of the light-concentrating layer away from the battery cell layer through a glue film. The hydrophobic layer is connected to the side of the protective layer away from the light-concentrating layer. The battery cell layer is the core part for realizing photoelectric conversion. When light passes through the light-concentrating layer, the light-concentrating layer converges the light, enhancing the light intensity irradiated on the battery cells, thereby improving the photoelectric conversion efficiency of the battery cells and enabling the photovoltaic module to generate more electric energy under the same lighting conditions.

[0008] Preferably, the breathable layer is an aluminum plate, and the surface of the aluminum plate is provided with equally spaced ventilation holes. The breathable layer is made of an aluminum plate, and the equally spaced ventilation holes on the surface can form convection between the inside of the photovoltaic module and the outside air. During the operation of the photovoltaic module, the battery cell layer will generate heat due to the conversion of electric energy, and the heat is transferred to the breathable layer through the heat-conducting layer. At this time, the outside cold air can enter the inside of the module through the ventilation holes, and the hot air is discharged from the ventilation holes, realizing effective heat dissipation, maintaining the appropriate working temperature of the battery cells, improving the power generation efficiency, and extending the service life of the battery cells.

[0009] Preferably, the protective layer is high-strength glass. The hydrophobic layer blocks water and dust. The protective layer is composed of high-strength glass, providing physical protection for the photovoltaic module to prevent external forces from damaging the internal structure. The hydrophobic layer adheres to the surface of the protective layer. With a special molecular structure, it makes water form water droplets on its surface and roll off, taking the dust away at the same time, effectively blocking the attachment of dust on the surface of the photovoltaic module, ensuring that light can pass through to the maximum extent, and maintaining the power generation efficiency.

[0010] Preferably, a photovoltaic module frame includes a support frame. The lower surface of the support frame is fixedly connected to a connecting frame. One end of the connecting frame away from the support frame is fixedly connected to a flat frame. By effectively solving the problems of rainwater residue and dust accumulation, it avoids the hot spot damage of the double-glass photovoltaic panel caused by dust shadows. It not only reduces the replacement frequency of the photovoltaic module due to damage, reduces the maintenance cost of the photovoltaic power generation system, but also significantly extends the overall service life of the photovoltaic module, enabling the photovoltaic power generation system to operate stably for a long time, and improving the reliability and economy of photovoltaic power generation.

[0011] Preferably, the connection frame includes a support part, a connection part and a mounting groove. The support part is fixedly connected to the upper surface of the connection frame. A connection part is arranged on the side of the support part. The connection part is in the shape of a vertical hook. The support part and the connection part form a C shape. An installation groove is formed between the support part and the connection part, into which the photovoltaic module body can be stably embedded. The vertical side part and the hook side part of the vertical hook-shaped connection part clamp the photovoltaic module body from the side and below, ensuring the stability of the photovoltaic module within the frame and preventing displacement or detachment due to external forces.

[0012] Preferably, the connection part includes a vertical side part and a hook side part. The vertical side part is fixedly connected to the upper surface of the support part. The hook side part is fixedly connected to one end of the vertical side part away from the support part.

[0013] Preferably, a plurality of rainwater diversion grooves are provided at equal intervals on the surface of the vertical side part. The rainwater diversion grooves are in an inverted V shape, which is used to assist in accelerating the discharge of rainwater. A plurality of inverted V-shaped rainwater diversion grooves are arranged on the vertical side of the connection part of the photovoltaic module frame. In rainy weather, these diversion grooves can make full use of their special shape to quickly and efficiently guide rainwater to flow along a specific direction, greatly accelerating the discharge speed of rainwater, avoiding rainwater remaining on the short side of the photovoltaic module. Since the rainwater is quickly discharged, the situation of dust remaining after the rainwater dries up is reduced, reducing the impact of dust on the photovoltaic module from the source, ensuring the cleanliness of the photovoltaic module and maintaining its good power generation performance.

[0014] Preferably, the hook side part includes a first hook, a second hook and a first glue overflow groove. The first hook is fixedly connected to the surface of the vertical side part. The second hook is fixedly connected to the connection part between the vertical side part and the first hook. The first glue overflow groove is located between the first hook and the second hook. A first glue overflow groove is provided between the first hook and the second hook of the hook side part. During the process of fixing the photovoltaic module body to the frame, if glue is used for reinforcement, the excess glue will flow into the first glue overflow groove, avoiding glue overflow and affecting the appearance and performance of the photovoltaic module, and ensuring the cleanliness and standardization of the installation process.

[0015] Preferably, both the first hook and the second hook are arc-shaped hooks, and the first hook and the second hook cooperate with each other to prevent scratching and limit the photovoltaic module body.

[0016] In summary, the technical effects and advantages of the present invention are as follows:

[0017] 1. In the present invention, a plurality of inverted V-shaped rainwater diversion grooves are provided on the vertical side of the connection part of the photovoltaic module frame. During rainy weather, these diversion grooves can make full use of their special shape to quickly and efficiently guide rainwater to flow down in a specific direction, greatly accelerating the drainage speed of rainwater, preventing rainwater from remaining on the short side of the photovoltaic module. Since the rainwater is quickly discharged, the situation of dust residue after the rainwater dries up is reduced, the influence of dust on the photovoltaic module is reduced from the source, the cleanliness of the photovoltaic module is ensured, and its good power generation performance is maintained.

[0018] 2. In the present invention, by effectively solving the problems of rainwater residue and dust accumulation, the hot spot damage caused by dust shadows on the double-glass photovoltaic panel is avoided. This not only reduces the frequency of replacement of the photovoltaic module due to damage, reduces the maintenance cost of the photovoltaic power generation system, but also significantly extends the overall service life of the photovoltaic module, enabling the photovoltaic power generation system to operate stably for a long time, and improving the reliability and economy of photovoltaic power generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of a dust-proof photovoltaic module according to the present invention;

[0020] Figure 2 is a schematic sectional view of a dust-proof photovoltaic module according to the present invention;

[0021] Figure 3 is a schematic diagram of the structure of the frame of a dust-proof photovoltaic module according to the present invention;

[0022] Figure 4 is a schematic diagram of the structure of the support frame in the frame of a dust-proof photovoltaic module according to the present invention;

[0023] Figure 5 is a schematic diagram of the structure of the vertical side part in the frame of a dust-proof photovoltaic module according to the present invention;

[0024] Figure 6 is a schematic diagram of the structure of the hook side part in the frame of a dust-proof photovoltaic module according to the present invention;

[0025] Figure 7 is a schematic diagram of the assembly structure of the frame of a dust-proof photovoltaic module and the photovoltaic module according to the present invention.

[0026] In the figure: 1. Support frame; 11. Support part; 12. Connection part; 121. Vertical side part; 1211. Rainwater diversion groove; 122. Hook side part; 1221. First hook; 1222. Second hook; 1223. First glue overflow groove; 13. Installation groove; 2. Connection frame; 3. Plane frame; 4. Photovoltaic module body; 41. Permeable layer; 42. Heat-conducting layer; 43. Battery cell layer; 44. Light-concentrating layer; 45. Protection layer; 46. Hydrophobic layer. DETAILED DESCRIPTION OF THE INVENTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] Referring to Figures 1-7 a dust-proof photovoltaic module shown, which includes a photovoltaic module body 4. The photovoltaic module body 4 includes a breathable layer 41, a heat-conducting layer 42, a battery cell layer 43, a light-concentrating layer 44, a protective layer 45, and a hydrophobic layer 46. The heat-conducting layer 42 is fixed on the surface of the breathable layer 41 through a glue film. The battery cell layer 43 is fixedly connected to the side of the heat-conducting layer 42 away from the breathable layer 41 through a glue film. The light-concentrating layer 44 is fixedly connected to the side of the battery cell layer 43 away from the heat-conducting layer 42 through a glue film. The protective layer 45 is fixedly connected to the side of the light-concentrating layer 44 away from the battery cell layer 43 through a glue film. The hydrophobic layer 46 is fixedly connected to the side of the protective layer 45 away from the light-concentrating layer 44. The battery cell layer 43 is the core part for realizing photoelectric conversion. When light passes through the light-concentrating layer 44, the light-concentrating layer 44 converges the light, enhancing the light intensity irradiated on the battery cells, thereby improving the photoelectric conversion efficiency of the battery cells and enabling the photovoltaic module to generate more electric energy under the same illumination conditions.

[0029] Among them, the breathable layer 41 is an aluminum plate, and the surface of the aluminum plate is provided with breathable holes arranged at equal intervals. The breathable layer 41 is made of an aluminum plate, and the breathable holes arranged at equal intervals on the surface can form a convection between the inside of the photovoltaic module and the outside air. During the operation of the photovoltaic module, the battery cell layer 43 will generate heat due to the conversion of electric energy. The heat is transferred to the breathable layer 41 through the heat-conducting layer 42. At this time, the outside cold air can enter the inside of the module through the breathable holes, and the hot air is discharged from the breathable holes, realizing effective heat dissipation, maintaining the appropriate working temperature of the battery cells, improving the power generation efficiency, and prolonging the service life of the battery cells.

[0030] Among them, the protective layer 45 is made of high-strength glass. The hydrophobic layer 46 blocks water and dust. The protective layer 45 is composed of high-strength glass, providing physical protection for the photovoltaic module to prevent external forces from damaging the internal structure. The hydrophobic layer 46 adheres to the surface of the protective layer 45. With a special molecular structure, water forms water droplets on its surface and rolls off, taking the dust away at the same time, effectively blocking the attachment of dust on the surface of the photovoltaic module, ensuring that light can pass through to the maximum extent, and maintaining the power generation efficiency.

[0031] Among them, a photovoltaic module frame includes a support frame 1. A connecting frame 2 is fixedly connected to the lower surface of the support frame 1. One end of the connecting frame 2 away from the support frame 1 is fixedly connected to a flat frame 3. By effectively solving the problems of rainwater residue and dust accumulation, the hot spot damage caused by dust shadow on the double-glass photovoltaic panel is avoided. This not only reduces the frequency of replacement of photovoltaic modules due to damage, lowers the maintenance cost of the photovoltaic power generation system, but also significantly extends the overall service life of the photovoltaic modules, enables the photovoltaic power generation system to operate stably for a long time, and improves the reliability and economy of photovoltaic power generation.

[0032] Among them, the connecting frame 2 includes a support portion 11, a connecting portion 12, and an installation groove 13. The support portion 11 is fixedly connected to the upper surface of the connecting frame 2. A connecting portion 12 is arranged on the side of the support portion 11. The connecting portion 12 is in the shape of a vertical hook. The support portion 11 and the connecting portion 12 form a C shape. An installation groove 13 is formed between the support portion 11 and the connecting portion 12. The photovoltaic module body 4 can be firmly embedded therein. The vertical side portion 121 and the hook side portion 122 of the vertical hook-shaped connecting portion 12 clamp the photovoltaic module body 4 from the side and below, ensuring the stability of the photovoltaic module within the frame and preventing displacement or detachment due to external forces.

[0033] Among them, the connecting portion 12 includes a vertical side portion 121 and a hook side portion 122. The vertical side portion 121 is fixedly connected to the upper surface of the support portion 11. The hook side portion 122 is fixedly connected to one end of the vertical side portion 121 away from the support portion 11.

[0034] Among them, a plurality of rainwater diversion grooves 1211 are arranged at equal intervals on the surface of the vertical side portion 121. The rainwater diversion grooves 1211 are in an inverted V shape, which is used to assist in accelerating the discharge of rainwater. A plurality of inverted V-shaped rainwater diversion grooves 1211 are arranged vertically on the connecting portion 12 of the photovoltaic module frame. In rainy weather, these diversion grooves can make full use of their special shape to quickly and efficiently guide the rainwater to flow down in a specific direction, greatly accelerating the discharge speed of the rainwater, avoiding rainwater residue on the short sides of the photovoltaic module. Since the rainwater is quickly discharged, the situation of dust residue after the rainwater dries up is reduced, reducing the impact of dust on the photovoltaic module from the source, ensuring the cleanliness of the photovoltaic module, and maintaining its good power generation performance.

[0035] Among them, the hook side part 122 includes a first hook 1221, a second hook 1222 and a first glue overflow groove 1223. The first hook 1221 is fixedly connected to the surface of the vertical side part 121, the second hook 1222 is fixedly connected to the connection part of the vertical side part 121 and the first hook 1221, and the first glue overflow groove 1223 is located between the first hook 1221 and the second hook 1222. A first glue overflow groove 1223 is provided between the first hook 1221 and the second hook 1222 of the hook side part 122. During the process of fixing the photovoltaic module body 4 to the frame, if glue is used for reinforcement, the excess glue will flow into the first glue overflow groove 1223, preventing the glue from overflowing and affecting the appearance and performance of the photovoltaic module, and ensuring the cleanliness and standardization of the installation process.

[0036] Among them, both the first hook 1221 and the second hook 1222 are arc-shaped hooks, and the first hook 1221 and the second hook 1222 cooperate with each other to prevent scratching and limit the photovoltaic module body 4.

[0037] The working principle of the present invention: The breathable layer 41 is made of an aluminum plate, and the breathable holes arranged at equal intervals on the surface can enable the internal and external air of the photovoltaic module to form convection. During the operation of the photovoltaic module, the battery cell layer 43 will generate heat due to the conversion of electrical energy. The heat is transferred to the breathable layer 41 through the heat conduction layer 42. At this time, the outside cold air can enter the module through the breathable holes, and the hot air is discharged from the breathable holes, realizing effective heat dissipation, maintaining the appropriate working temperature of the battery cells, improving the power generation efficiency, and prolonging the service life of the battery cells.

[0038] The battery cell layer 43 is the core part for realizing photoelectric conversion. When light passes through the light concentrating layer 44, the light concentrating layer 44 converges the light, enhancing the light intensity irradiated on the battery cells, thereby improving the photoelectric conversion efficiency of the battery cells, enabling the photovoltaic module to generate more electrical energy under the same illumination conditions. The protective layer 45 is composed of high-strength glass, providing physical protection for the photovoltaic module to prevent external forces from damaging the internal structure. The hydrophobic layer 46 is attached to the surface of the protective layer 45. With a special molecular structure, it makes water form water droplets on its surface and roll off, while taking away dust at the same time, effectively blocking the attachment of dust on the surface of the photovoltaic module, ensuring that light can pass through to the greatest extent, and maintaining the power generation efficiency.

[0039] The support part 11 and the connection part 12 of the connection frame 2 form a C-shaped installation groove 13, into which the photovoltaic module body 4 can be firmly embedded. The vertical side part 121 and the hook side part 122 of the vertical hook-shaped connection part 12 clamp the photovoltaic module body 4 from the side and below, ensuring the stability of the photovoltaic module within the frame and preventing displacement or detachment due to external forces.

[0040] On the surface of the vertical side part 121, there are a plurality of inverted V-shaped rainwater diversion grooves 1211 arranged at equal intervals, which can guide the rainwater to flow in a specific direction, avoiding the accumulation of rainwater on the surface of the frame. When the rainwater falls on the frame, it will flow down quickly along the inclination angle of the diversion groove, reducing the contact time between the rainwater and the photovoltaic module, and reducing the risk of dust adhesion caused by water accumulation.

[0041] There is a first glue overflow groove 1223 between the first hook 1221 and the second hook 1222 of the hook side part 122. During the process of fixing the photovoltaic module body 4 to the frame, if glue is used for reinforcement, the excess glue will flow into the first glue overflow groove 1223, avoiding the glue overflowing and affecting the appearance and performance of the photovoltaic module, and ensuring the neatness and standardization of the installation process.

[0042] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dust-proof photovoltaic module, comprising a photovoltaic module body (4), characterized in that: The photovoltaic module body (4) includes a breathable layer (41), a heat-conducting layer (42), a cell layer (43), a light-concentrating layer (44), a protective layer (45), and a hydrophobic layer (46). The heat-conducting layer (42) is fixed on the surface of the breathable layer (41) through a glue film. The cell layer (43) is fixedly connected to the side of the heat-conducting layer (42) away from the breathable layer (41) through a glue film. The light-concentrating layer (44) is fixedly connected to the side of the cell layer (43) away from the heat-conducting layer (42) through a glue film. The protective layer (45) is fixedly connected to the side of the light-concentrating layer (44) away from the cell layer (43) through a glue film. The hydrophobic layer (46) is fixedly connected to the side of the protective layer (45) away from the light-concentrating layer (44).

2. The anti-dust-accumulating photovoltaic module according to claim 1, wherein: The breathable layer (41) is an aluminum plate, and breathable holes are arranged at equal intervals on the surface of the aluminum plate.

3. The anti-dust-accumulating photovoltaic module according to claim 1, wherein: The protective layer (45) is high-strength glass, and the hydrophobic layer (46) blocks water and dust.

4. A photovoltaic module frame, characterized in that: It includes a support frame (1). A connecting frame (2) is fixedly connected to the lower surface of the support frame (1). A flat frame (3) is fixedly connected to the end of the connecting frame (2) away from the support frame (1).

5. A photovoltaic module frame according to claim 4, characterized in that: The connecting frame (2) includes a support portion (11), a connecting portion (12), and an installation groove (13). The support portion (11) is fixedly connected to the upper surface of the connecting frame (2). A connecting portion (12) is arranged on the side of the support portion (11). The connecting portion (12) is in the shape of a vertical hook. The support portion (11) and the connecting portion (12) form a C shape, and an installation groove (13) is formed between the support portion (11) and the connecting portion (12).

6. A photovoltaic module frame according to claim 5, characterized in that: The connecting portion (12) includes a vertical side portion (121) and a hook side portion (122). The vertical side portion (121) is fixedly connected to the upper surface of the support portion (11). The hook side portion (122) is fixedly connected to the end of the vertical side portion (121) away from the support portion (11).

7. A photovoltaic module frame according to claim 6, wherein: A plurality of rainwater diversion grooves (1211) are arranged at equal intervals on the surface of the vertical side portion (121). The rainwater diversion grooves (1211) are in an inverted V shape.

8. A photovoltaic module frame according to claim 6, characterized in that: The hook side portion (122) includes a first hook (1221), a second hook (1222), and a first glue overflow groove (1223). The first hook (1221) is fixedly connected to the surface of the vertical side portion (121). The second hook (1222) is fixedly connected to the connection between the vertical side portion (121) and the first hook (1221). The first glue overflow groove (1223) is located between the first hook (1221) and the second hook (1222).

9. A photovoltaic module frame according to claim 8, wherein: Both the first hook (1221) and the second hook (1222) are arc-shaped hooks.

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