Curved surface solar module
By setting up a hydrophobic layer in the valley of the curved solar module to cover the flowing water and dust accumulation area, the problem of water accumulation and dirt in the solar module is solved, the power generation efficiency is improved, and the cost and light inlet obstacles are reduced, and more efficient self-cleaning capacity is achieved.
Patent Information
- Application Number
- CN202420054297.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-09
- Publication Date
- 2024-12-06
- Estimated Expiration
- 2034-01-09
AI Technical Summary
The front panel materials of solar modules are highly hydrophilic and prone to accumulation of rainwater and dirt, resulting in damage to the photovoltaic power generation efficiency and appearance, especially in curved installation scenarios.
在曲面太阳能组件的波谷中设置疏水层，覆盖流水积尘区，疏水性大于组件受光面的疏水性，减少积水残留和脏污遮挡，提高发电效率，并通过局部布置降低成本和进光阻碍。
Effectively reduce water residue and dirty occlusion, improve the power generation efficiency of curved solar modules, reduce the impact of hydrophobic layers on incoming light, ensure the power generation efficiency, and the overall power generation gain is about 5%.
Smart Images
Figure CN222126552U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of solar power generation, in particular to a curved solar energy component. Background Art
[0002] Solar panels are the core components of photovoltaic power generation systems. Their function is to convert light energy into electrical energy. They are usually installed on the surfaces of structures such as roofs, car roofs or walls. Among them, curved photovoltaic products are widely used on building roofs and in installation scenarios with styling requirements.
[0003] However, the front panel of the solar panel is usually made of glass material, which is highly hydrophilic and easily accumulates rainwater. When the rainwater evaporates, it is easy to retain dirt, blocking the solar panel and seriously affecting the power generation efficiency and appearance of photovoltaic products.
[0004] Therefore, there is an urgent need for curved solar panels to solve the above technical problems. Utility Model Content
[0005] Based on the above, the purpose of the utility model is to provide a curved solar panel, in which the hydrophobic layer covers the water and dust accumulation area in a targeted manner, reduces the obstruction of the solar panel by the residual water and dirt, improves the power generation efficiency, and reduces the impact of the hydrophobic layer itself on light entry while controlling costs.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] A curved solar panel assembly is provided, comprising a curved solar panel body, the curved solar panel body being provided with a trough, the curved solar panel assembly further comprising a hydrophobic layer, the hydrophobic layer being provided on a light-receiving surface of the trough, a flowing water and dust accumulation area being provided in the middle of the trough and extending in the same direction thereof, the hydrophobic layer covering the flowing water and dust accumulation area, and the hydrophobicity of the hydrophobic layer being greater than the hydrophobicity of the light-receiving surface of the curved solar panel body.
[0008] Specifically, a water flowing and dust accumulation area for drainage is provided in the middle of the trough of the curved solar panel body, and a hydrophobic layer is provided on the light-receiving side of the trough. The hydrophobic layer covers the water flowing and dust accumulation area in a targeted manner. The hydrophobicity of the hydrophobic layer is greater than the hydrophobicity of the light-receiving surface of the curved solar panel body, thereby reducing the residual water and the dirt remaining after the evaporation of the water, reducing the obstruction of the solar panels by the dirt, and improving the power generation efficiency of the curved solar panels.
[0009] As an optional technical solution for curved solar panels, the width W2 of the hydrophobic layer is not less than the width W1 of the flowing water and dust accumulation area, and the difference between the width W2 of the hydrophobic layer and the width W1 of the flowing water and dust accumulation area does not exceed a preset width difference.
[0010] As an optional technical solution for curved solar panels, the width W1 of the water flow and dust accumulation zone is positively correlated with the design rainstorm intensity qj and the size of the catchment area F.
[0011] As an optional technical solution for the curved solar panel assembly, the curved solar panel body includes a plurality of battery strings, and the battery string includes a plurality of battery cells connected in series.
[0012] As an optional technical solution for a curved solar panel, the hydrophobic layer covers a local position of the solar cell in the trough, and the short side direction of the solar cell is the same as the extension direction of the trough.
[0013] As an optional technical solution for a curved solar panel, the hydrophobic layer covers a local position of the solar cell in the trough, and the long side direction of the solar cell is the same as the extension direction of the trough.
[0014] As an optional technical solution for the curved solar panel, the series connection direction of the solar cells located in the same trough is the same as the extension direction of the trough.
[0015] As an optional technical solution for the curved solar panel, a plurality of battery strings are arranged side by side at intervals along an extension direction perpendicular to the trough.
[0016] As an optional technical solution for a curved solar panel, the curved solar panel body also includes a front panel layer and a back panel layer, the front panel layer is bonded to the front side of the battery string, the back panel layer is bonded to the back side of the battery string, and the hydrophobicity of the hydrophobic layer is greater than that of the front panel layer.
[0017] As an optional technical solution for the curved solar panel, the hydrophobic layer is configured as a semi-transparent structure, and the light transmittance of the hydrophobic layer is between 80% and 95%.
[0018] As an optional technical solution for curved solar panels, the hydrophobic layer is a nano coating; and / or
[0019] The hydrophobic layer is made of one or more of titanium dioxide, silicon dioxide, paraffin, a photocatalyst film, a hydrophobic oil film, and a hydrophobic resin.
[0020] As an optional technical solution for a curved solar panel assembly, the curved solar panel body is configured as a wavy curved structure, a plurality of troughs are provided, and the curved solar panel body also includes a plurality of crests, and the plurality of troughs and the plurality of crests are alternately arranged.
[0021] The beneficial effects of the utility model are:
[0022] The curved solar panel body of the curved solar module provided by the utility model has a flowing water and dust accumulation area for drainage in the middle of the trough, and a hydrophobic layer is arranged on the light-receiving side of the trough, and the hydrophobic layer covers the flowing water and dust accumulation area in a targeted manner, and the hydrophobicity of the hydrophobic layer is greater than the hydrophobicity of the light-receiving surface of the curved solar panel body, thereby reducing the residual water accumulation, improving the self-cleaning ability, reducing the dirt left after the evaporation of the accumulated water, reducing the obstruction of the solar module by dirt, and improving the power generation efficiency of the curved solar module. Since the hydrophobic layer is only arranged for the flowing water and dust accumulation area instead of the global arrangement, while controlling the cost, the coating process is simpler, and the influence of the hydrophobic layer itself on blocking the light is reduced, thereby ensuring the power generation efficiency of the curved solar module. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. 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 the contents of the embodiments of the present invention and these drawings without paying any creative work.
[0024] Figure 1 It is a structural schematic diagram of the curved solar panel body provided by an embodiment of the utility model;
[0025] Figure 2 It is a schematic diagram of the installation structure of the curved solar panel body provided by the embodiment of the utility model;
[0026] Figure 3 It is a schematic diagram of the exploded structure of the curved solar panel provided by the embodiment of the utility model;
[0027] Figure 4 is a cross-sectional view of a curved solar panel provided by an embodiment of the utility model;
[0028] Figure 5 is a diagram showing the position relationship between the hydrophobic layer and the battery string provided in an embodiment of the utility model;
[0029] Figure 6 is a diagram showing the position relationship between the hydrophobic layer and the battery string provided in another embodiment of the utility model;
[0030] Figure 7 It is a schematic diagram of the exploded structure of the curved solar panel body provided by the embodiment of the utility model.
[0031] In the figure:
[0032] 100, curved solar panel body; 110, battery string; 111, battery cell; 120, front plate layer; 130, back plate layer; 140, first adhesive film layer; 150, second adhesive film layer;
[0033] 200, trough; 210, water flow and dust accumulation area; 300, peak; 400, hydrophobic layer. DETAILED DESCRIPTION
[0034] In order to make the technical problems solved by the utility model, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the utility model will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the utility model. It is understandable that the specific embodiments described herein are only used to explain the utility model, rather than to limit the utility model. It should also be noted that, for the convenience of description, only the parts related to the utility model, rather than all of the structures, are shown in the accompanying drawings.
[0035] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0036] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0037] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the modules or components referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.
[0038] This embodiment provides a curved solar panel, which is a core component of a photovoltaic power generation system, and is mainly used to convert light energy into electrical energy, and is particularly suitable for use in scenarios such as building roofs. Figure 1-Figure 7 As shown, the curved solar panel assembly includes a curved solar panel body 100 and a hydrophobic layer 400 . The curved solar panel body 100 is provided with troughs 200 and crests 300 , and the hydrophobic layer 400 is arranged corresponding to the troughs 200 .
[0039] Further, such as Figure 1 and Figure 2 As shown, in this embodiment, the curved solar panel body 100 is set as a wave-shaped curved structure, and a plurality of troughs 200 are provided. The curved solar panel body 100 also includes a plurality of crests 300, and the plurality of troughs 200 and the plurality of crests 300 are arranged alternately. When the curved solar panel is installed on the roof, it is usually tilted downward. Since the troughs 200 are concave downward, water flows along the troughs 200 on rainy days, and a water and dust accumulation area 210 extending in the same direction as the troughs 200 is formed in the middle of the troughs 200. Figure 3 As shown, the hydrophobic layer 400 covers the water flow and dust accumulation area 210 , and the hydrophobicity of the hydrophobic layer 400 is greater than the hydrophobicity of the light-receiving surface of the curved solar panel body 100 .
[0040] Specifically, the curved solar panel body 100 of the curved solar module provided in this embodiment has a flowing water and dust accumulation area 210 for drainage in the middle of the trough 200, and a hydrophobic layer 400 is arranged on the light-receiving side of the trough 200. The hydrophobic layer 400 covers the flowing water and dust accumulation area 210 in a targeted manner, and the hydrophobicity of the hydrophobic layer 400 is greater than the hydrophobicity of the light-receiving surface of the curved solar panel body 100, thereby reducing the residual water accumulation, improving the self-cleaning ability, reducing the dirt left after the evaporation of the accumulated water, reducing the obstruction of the solar module by dirt, and improving the power generation efficiency of the curved solar module. Since the hydrophobic layer 400 is only arranged for the flowing water and dust accumulation area 210 instead of the global arrangement, while controlling the cost, the coating process is simpler, and the influence of the hydrophobic layer 400 itself on blocking the light is reduced, thereby ensuring the power generation efficiency of the curved solar module. The overall power generation power gain of the curved solar module is about 5%.
[0041] Exemplarily, the hydrophobic layer 400 is a nano coating, which is specifically made of a nano-scale dustproof material with corrosion resistance, high adhesion, and high hardness.
[0042] Furthermore, the hydrophobic layer 400 is made of one or more of titanium dioxide, silicon dioxide, paraffin, a photocatalyst film, a hydrophobic oil film, and a hydrophobic resin.
[0043] Exemplarily, the hydrophobic layer 400 is configured as a semi-transparent structure, and the light transmittance of the hydrophobic layer 400 is between 80% and 95%, so as to allow external light to penetrate the hydrophobic layer 400 and enter the curved solar panel body 100 .
[0044] Exemplarily, the width W2 of the hydrophobic layer 400 is not less than the width W1 of the water-flowing dust accumulation area 210, and the difference between the width W2 of the hydrophobic layer 400 and the width W1 of the water-flowing dust accumulation area 210 does not exceed a preset width difference, and the preset width difference does not exceed 10 mm. Preferably, the width W2 of the hydrophobic layer 400 is equal to the width W1 of the water-flowing dust accumulation area 210 to minimize the shielding effect of the hydrophobic layer 400 on the incoming light.
[0045] According to the roof rainwater design flow formula recorded in GB50015-2019 "Building Water Supply and Drainage Design Standard": q = 1.5 * Ψ * F * qj, where q is the design rainwater flow, Ψ is the runoff coefficient, F is the catchment area, and qj is the design rainstorm intensity. It can be seen from this that the smaller the design rainstorm intensity qj (the smaller the rainwater intensity), the smaller the catchment area F, the smaller the drainage volume of the trough 200, the smaller the width W1 of the corresponding water flow dust accumulation area 210, and the smaller the width W2 of the corresponding hydrophobic layer 400. It can be seen that the size of the width W1 of the water flow dust accumulation area 210 is positively correlated with the design rainstorm intensity qj and the size of the catchment area F, and the minimum value of the width W2 of the hydrophobic layer 400 is also positively correlated with the design rainstorm intensity qj and the size of the catchment area F.
[0046] For example, Figure 3-Figure 7 As shown, the curved solar panel body 100 includes a plurality of battery strings 110, and the battery string 110 includes a plurality of battery cells 111 connected in series. Figure 5 As shown, the series connection direction of the battery cells 111 in the same trough 200 is the same as the extension direction of the trough 200, so that the hydrophobic layer 400 in each trough 200 only affects one battery string 110, reducing the negative impact of the hydrophobic layer 400 on the power generation of the curved solar panel body 100. In particular, when the electrical connection between some or all battery strings 110 is in parallel, such as Figure 3 As shown, the hydrophobic layer 400 only affects the power generation of the battery string 110 located in the trough 200, while the power generation of the battery string 110 corresponding to the peak 300 and the ridge is not affected, thereby reducing the impact on the overall power generation of the curved solar panel body 100.
[0047] For example, Figure 5 As shown, a plurality of battery strings 110 in the curved solar panel body 100 are connected in series via wires, and the plurality of battery strings 110 are arranged side by side at intervals along an extending direction perpendicular to the trough 200 .
[0048] For example, Figure 5As shown, the hydrophobic layer 400 covers the local position of the battery cell 111 in the trough 200, and the short side direction of the battery cell 111 is the same as the extension direction of the trough 200, that is, along the extension direction of the trough 200 (that is, the series connection direction of the battery cell 111), the width D of the battery cell 111 is greater than the length L of the battery cell 111. Conventional battery cells 111 are generally cut into half slices or quarter slices to reduce the loss caused by stress or breakage, that is, the width D of the battery cell 111 = twice the length L or the width D of the battery cell 111 = four times the length L. According to the barrel principle of the power generation of the battery string 110, when the voltages of the battery cells 111 in the battery string 110 are inconsistent, the voltage of the battery string 110 is limited by the battery cell 111 with the lowest voltage. For a single battery cell 111, its shielding area S1 by the hydrophobic layer 400 = the width W2 of the hydrophobic layer 400 * the length L of the battery cell 111, and in the case of Figure 6 In the scheme of the long side direction of the cell 111 and the extension direction of the trough 200 shown, the shielding area S2 of the cell 111 by the hydrophobic layer 400 = the width W2 of the hydrophobic layer 400 * the width D of the cell 111. Obviously, S1 is only half or a quarter of S2, that is, for the shielding area of the hydrophobic layer 400, the scheme in which the short side direction of the cell 111 is the same as the extension direction of the trough 200 is much smaller than the scheme in which the long side direction of the cell 111 is the extension direction of the trough 200. Therefore, the hydrophobic layer 400 has a lower impact on the overall power generation of the cell string 110 and the curved solar panel body 100. According to the current I = the light-receiving surface area S of the cell 111 * 0.1 * conversion efficiency η / voltage V, it can be seen that the current I is larger when the cell 111 is connected in series in a direction parallel to the trough 200, that is, the power generation efficiency is greater, and the power generation power is increased by about 3% compared with the scheme in which the cell 111 is connected in series in a direction perpendicular to the trough 200.
[0049] Of course, in other embodiments of the present invention, such as Figure 6 As shown, the long side direction of the cell 111 can also be set to be the same as the extension direction of the trough 200, reducing the span of the cell 111 in the width direction of the trough 200 and reducing the bending amount of the cell 111, thereby reducing the fragmentation rate and improving the reliability of the curved solar panel body 100.
[0050] For example, Figure 3 , Figure 4 and Figure 7 As shown, the curved solar panel body 100 also includes a front panel layer 120, a back panel layer 130, a first adhesive film layer 140 and a second adhesive film layer 150. The front panel layer 120 is bonded to the front side of the battery string 110 through the first adhesive film layer 140, and the back panel layer 130 is bonded to the back side of the battery string 110 through the second adhesive film layer 150. The hydrophobicity of the hydrophobic layer 400 is greater than that of the front panel layer 120.
[0051] Exemplarily, the front panel layer 120 is made of one of high-transmittance tempered glass, high-transmittance semi-tempered glass and transparent resin material, and has good light transmission and impact resistance.
[0052] Exemplarily, the first film layer 140 may be a transparent film, preferably a high-cutoff EVA (ethylene-vinyl acetate copolymer) film, POE (polyolefin elastomer) film, or one of EVA and POE co-extruded films (EPE).
[0053] Exemplarily, the back panel layer 130 is made of transparent glass or transparent flexible polymer material, and has good light transmission and impact resistance.
[0054] Exemplarily, the second adhesive film layer 150 may also be a transparent adhesive film, preferably a high-cutoff EVA adhesive film, POE adhesive film, or an EVA and POE co-extruded adhesive film (EPE).
[0055] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims
1. A curved solar panel assembly, comprising a curved solar panel body, wherein the curved solar panel body is provided with a trough, characterized in that: The curved solar panel also includes a hydrophobic layer, which is arranged on the light-receiving surface of the trough. A water flow and dust accumulation area is provided in the middle of the trough and extends in the same direction as the trough. The hydrophobic layer covers the water flow and dust accumulation area, and the hydrophobicity of the hydrophobic layer is greater than the hydrophobicity of the light-receiving surface of the curved solar panel body.
2. The curved solar panel according to claim 1, characterized in that: The width W2 of the hydrophobic layer is not less than the width W1 of the flowing water and dust accumulation area, and the difference between the width W2 of the hydrophobic layer and the width W1 of the flowing water and dust accumulation area does not exceed a preset width difference.
3. The curved solar panel according to claim 1, characterized in that: The width W1 of the water flow and dust accumulation zone is positively correlated with the designed rainstorm intensity qj and the catchment area F.
4. The curved solar panel according to claim 1, characterized in that: The curved solar panel body includes a plurality of battery strings, and the battery string includes a plurality of battery sheets connected in series.
5. The curved solar panel according to claim 4, characterized in that: The hydrophobic layer covers a local position of the battery cell in the trough, and the short side direction of the battery cell is the same as the extending direction of the trough.
6. The curved solar panel according to claim 4, characterized in that: The hydrophobic layer covers a local position of the battery cell in the trough, and the long side direction of the battery cell is the same as the extending direction of the trough.
7. The curved solar panel according to claim 4, characterized in that: The plurality of battery strings are arranged side by side at intervals along an extension direction perpendicular to the wave valley.
8. The curved solar panel according to claim 4, characterized in that: The series connection direction of the battery cells located in the same trough is the same as the extension direction of the trough.
9. The curved solar panel according to claim 4, characterized in that: The curved solar panel body also includes a front plate layer and a back plate layer, the front plate layer is bonded to the front side of the battery string, the back plate layer is bonded to the back side of the battery string, and the hydrophobicity of the hydrophobic layer is greater than that of the front plate layer.
10. The curved solar panel according to any one of claims 1 to 9, characterized in that: The hydrophobic layer is configured as a semi-transparent structure, and the light transmittance of the hydrophobic layer is between 80% and 95%.
11. The curved solar panel according to any one of claims 1 to 9, characterized in that: The hydrophobic layer is a nano coating; and / or The hydrophobic layer is made of one of titanium dioxide, silicon dioxide, paraffin, a photocatalyst film, a hydrophobic oil film and a hydrophobic resin.
12. The curved solar panel according to any one of claims 1 to 9, characterized in that: The curved solar panel body is configured as a wave-shaped curved structure, wherein a plurality of troughs are provided, and the curved solar panel body further comprises a plurality of crests, wherein the plurality of troughs and the plurality of crests are alternately arranged.