Photovoltaic frame and photovoltaic module
By setting a reflective structure on the bottom plate of the photovoltaic frame, incident light is reflected to the front and back of the photovoltaic cell, the problem of insufficient absorption and utilization of solar light on the back of the photovoltaic cell in existing photovoltaic modules is solved, and the power output and service life of the module are improved.
Patent Information
- Application Number
- CN202420685386.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-03
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-04-03
AI Technical Summary
In existing photovoltaic modules, the base plate blocks the sunlight absorption and utilization on the back of the photovoltaic cell, and the white glaze coating affects the load performance of the glass, causing glass to rupture and increase costs.
A reflective structure is set on the bottom plate of the photovoltaic frame to reflect incident light to the front and back of the photovoltaic cell, reducing the amount of white glaze coating on the back glass.
It increases the solar light absorption and utilization on the front and back sides of the photovoltaic cell, enhances power output, avoids glass rupture, reduces costs, and extends the service life of the components.
Smart Images
Figure CN222674239U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of photovoltaic cells, and specifically relates to a photovoltaic frame and a photovoltaic component. Background Art
[0002] Photovoltaic modules include photovoltaic cells and photovoltaic frames. The bottom plate in existing photovoltaic modules blocks the absorption and utilization of part of the sunlight by the back of the photovoltaic cells, which is not conducive to the improvement of the power of the back of the photovoltaic modules. At the same time, since the surface of the glass plate on the back of the photovoltaic cells is coated with a white glaze coating, the glaze material of the white glaze coating itself will affect the load performance of the glass, thereby causing the glass plate to break, which is not conducive to the long-term use of the photovoltaic module. In addition, the use of the white glaze coating also increases the cost of the glass plate.
[0003] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content
[0004] The utility model aims to provide a photovoltaic frame and a photovoltaic assembly, which can increase the light absorption amount of the front and back sides of the photovoltaic cells and improve the power of the front and back sides of the photovoltaic cells.
[0005] In order to achieve the above purpose, the technical solution provided by a specific embodiment of the utility model is as follows:
[0006] A photovoltaic frame, comprising a frame body, the frame body having a receiving groove for fixing the edge of a photovoltaic cell, the frame body comprising a bottom plate located below the receiving groove, the upper surface of the bottom plate being provided with a plurality of reflective structures, the reflective structures being configured to reflect all or part of the incident light to the front and back sides of the photovoltaic cell.
[0007] In one or more embodiments of the present utility model, the frame body also includes a top plate, a connecting plate connecting the top plate and the bottom plate, a support plate fixedly mounted on the connecting plate, and a fixing plate connecting the support plate and the bottom plate, and the receiving groove is formed by the top plate, the connecting plate and the support plate.
[0008] In one or more embodiments of the present invention, the reflective structure is disposed on the upper surface of the bottom plate on a side of the fixing plate away from the connecting plate.
[0009] In one or more embodiments of the present invention, the reflective structure includes a reflective layer.
[0010] In one or more embodiments of the present invention, the reflective layer is a white glaze coating applied on the bottom plate.
[0011] In one or more embodiments of the present invention, the reflective structure further includes an adhesive layer and a base layer sequentially stacked between the bottom plate and the reflective layer.
[0012] In one or more embodiments of the present invention, the reflective layer is a metal layer formed on the base layer; or,
[0013] The reflective layer is a white reflective layer, an anti-yellowing layer is arranged between the bonding layer and the base layer, and the white reflective layer and / or the anti-yellowing layer is a fluorine-containing coating.
[0014] In one or more embodiments of the present invention, the reflective structure is a prism structure, the prism structure includes a first reflective plane and a second reflective plane that are alternately distributed, and the angle between the first reflective plane and the second reflective plane is 100° to 150°; and / or,
[0015] The reflective structure is a prism structure, and the prism structure is distributed obliquely on the bottom plate, with an inclination angle of 30° to 60°.
[0016] Another specific embodiment of the present invention provides a technical solution as follows:
[0017] A photovoltaic assembly, the photovoltaic assembly comprising the photovoltaic frame and photovoltaic cell as described above, the edge of the photovoltaic cell being fixedly mounted in a receiving groove in the photovoltaic frame, the photovoltaic cell comprising a first glass plate and a second glass plate arranged opposite to each other, and a cell sheet encapsulated between the first glass plate and the second glass plate, the second glass plate being arranged toward the bottom plate.
[0018] In one or more embodiments of the present invention, on the plane where the upper surface of the base plate is located, the orthographic projection area of the reflective structure is at least partially located outside the orthographic projection area of the battery cell.
[0019] Compared with the prior art, the utility model has the following beneficial effects:
[0020] The utility model provides a photovoltaic frame and a photovoltaic module. By arranging a reflection structure on the bottom plate, the incident light passing through the photovoltaic cell can be fully or partially reflected to the front and back of the photovoltaic cell, so as to increase the absorption and utilization of sunlight by the front and back of the photovoltaic cell, which is beneficial to improve the power of the front and back of the photovoltaic module.
[0021] At the same time, the amount of white glaze coating on the second glass on the back of the photovoltaic cell can be reduced, reducing the impact of the white glaze coating on the surface stress of the second glass plate, thereby avoiding the breakage of the second glass plate, reducing the cost of the second glass plate, and helping to increase the service life of the photovoltaic module. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the embodiments of the utility model 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 recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0023] Figure 1 This is a schematic diagram of the structure of the photovoltaic frame in the first embodiment of the utility model;
[0024] Figure 2 This is a schematic diagram of the structure of the photovoltaic frame in the second embodiment of the present utility model;
[0025] Figure 3 This is a schematic diagram of the partial structure of the photovoltaic frame in the second embodiment of the utility model;
[0026] Figure 4 This is a schematic diagram of the structure of the photovoltaic frame in the third embodiment of the present utility model;
[0027] Figure 5 This is a schematic diagram of the partial structure of the photovoltaic frame in the third embodiment of the present utility model;
[0028] Figure 6 This is a schematic diagram of the structure of the photovoltaic frame in the fourth embodiment of the utility model;
[0029] Figure 7 This is a schematic diagram of the partial structure of the photovoltaic frame in the fourth embodiment of the utility model;
[0030] Figure 8 This is a schematic diagram of a partial top view of the photovoltaic frame in the fourth embodiment of the utility model;
[0031] Fig. 9 This is a schematic diagram of the structure of the photovoltaic module in the fifth embodiment of the present utility model. DETAILED DESCRIPTION
[0032] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in 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 them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.
[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0035] The technical solution of the present utility model will be described below in conjunction with the accompanying drawings.
[0036] Embodiment 1:
[0037] Reference Figure 1 As shown, the utility model discloses a photovoltaic frame, which includes a frame body 1, a receiving groove 10 for fixing the edge of a photovoltaic cell on the frame body 1, and a bottom plate 11 located below the receiving groove 10. A plurality of reflective structures 2 are provided on the upper surface of the bottom plate 11, and the reflective structures 2 are configured to reflect all or part of the incident light to the front and back of the photovoltaic cell. In actual use, the design of the reflective structure 2 can increase the amount of sunlight absorbed and utilized on the front and back of the photovoltaic cell, thereby improving the power of the front and back of the photovoltaic cell.
[0038] Specifically, the frame body 1 in this embodiment further includes a top plate 12, a connecting plate 13 connecting the top plate 12 and the bottom plate 11, a support plate 14 fixedly mounted on the connecting plate 13, and a fixing plate 15 connecting the support plate 14 and the bottom plate 11. The receiving groove 10 is formed by the top plate 12, the connecting plate 13 and the supporting plate 14. When the edge of the photovoltaic cell is fixed in the receiving groove 10, the edge of the back of the photovoltaic cell abuts against the supporting plate 14, and the edge of the front of the photovoltaic cell abuts against the top plate 12. According to this design, the edge of the photovoltaic cell can be fixed stably and securely.
[0039] Furthermore, the reflective structure 2 in this embodiment is arranged on the upper surface of the bottom plate 11 on the side of the fixing plate 15 away from the connecting plate 13, so that the incident light can be fully or partially reflected to the front and back of the photovoltaic cell through the reflective structure 2.
[0040] The reflective structure 2 in this embodiment is a reflective layer 21. The reflective layer 21 is a white glaze coating applied on the bottom plate 11. The white glaze coating can reflect the incident light passing through the photovoltaic cell to the front and back of the photovoltaic cell.
[0041] Preferably, in order to more stably and securely fix the edge of the photovoltaic cell, a clamping portion 121 extending toward the support plate 14 is further provided on the end of the top plate 12 away from the connecting plate 13 in this embodiment. When the photovoltaic cell and the photovoltaic frame are installed, the back of the photovoltaic cell abuts against the upper surface of the support plate 14, and the clamping portion 121 abuts against the front of the photovoltaic cell.
[0042] Embodiment 2:
[0043] The frame body 1 in this embodiment is completely the same as the frame body 1 in the first embodiment, except that the structure of the reflective structure 2 is different.
[0044] Specifically, refer to Figure 2 , Figure 3 As shown, the reflective structure 2 in this embodiment includes an adhesive layer 22 , a base layer 23 , and a reflective layer 21 which are sequentially stacked on the bottom plate 11 .
[0045] Exemplarily, the reflective layer 21 in this embodiment is a metal layer formed on the base layer 23. Preferably, the metal layer can be a metal film layer that can reflect light, such as an aluminum-plated metal layer. The bonding layer 22 can be a film layer that can provide bonding force, such as an EVA film layer. The base layer 23 can be a film layer that can provide supporting force, such as a PET film layer. According to this design, the metal layer can reflect the incident light passing through the photovoltaic cell to the front and back of the photovoltaic cell.
[0046] Embodiment three:
[0047] The frame body 1 in this embodiment is completely the same as the frame body 1 in the first embodiment, except that the structure of the reflective structure 2 is different.
[0048] Specifically, refer to Figure 4 , Figure 5 As shown, the reflective structure 2 in this embodiment includes an adhesive layer 22, an anti-yellowing layer 24, a base layer 23, and a reflective layer 21 stacked in sequence on the bottom plate 11. The adhesive layer 22 can be an EVA film layer or other film layer that can provide adhesive force. The base layer 23 can be a PET film layer or other film layer that can provide supporting force.
[0049] For example, the reflective layer 21 in this embodiment is a white reflective layer, an anti-yellowing layer 24 is provided between the adhesive layer 22 and the base layer 23, and both the white reflective layer and the anti-yellowing layer 24 are fluorine-containing coatings. According to this design, the white reflective layer can reflect incident light passing through the photovoltaic cell to the front and back of the photovoltaic cell.
[0050] Of course, the present application is not limited thereto. In other embodiments, one of the white reflective layer and the anti-yellowing layer 24 is a fluorine-containing coating, and the other is other coatings.
[0051] Embodiment 4:
[0052] The frame body 1 in this embodiment is completely the same as the frame body 1 in the first embodiment, except that the structure of the reflective structure 2 is different.
[0053] Specifically, refer to Figure 6As shown, the reflective structure 2 in this embodiment is a prism structure 25, and the prism structure 25 includes a plurality of reflective surfaces.
[0054] Exemplarily, the reflective surface may be a plane, a curved surface, or a combination of a plane and a curved surface.
[0055] Preferably, refer to Figure 7 As shown, the prism structure 25 in this embodiment includes a first reflection plane 251 and a second reflection plane 252 that are alternately distributed. Specifically, the prism structure 25 in this embodiment is a triangular prism structure. The angle between the first reflection plane 251 and the second reflection plane 252 is 120°. According to this design, the reflection surface of the prism structure 25 can reflect the incident light passing through the photovoltaic cell to the front and back of the photovoltaic cell.
[0056] Of course, the present application is not limited thereto, and in other embodiments, the angle between the first reflection plane 251 and the second reflection plane 252 may be 100°, 150°, or any value between 100° and 150°.
[0057] Preferably, refer to Figure 8 As shown, the prism structure 25 in this embodiment is distributed obliquely on the bottom plate 11, and the inclination angle is 30° to 60°.
[0058] The prism structure 25 includes alternately distributed first reflection planes 251 and second reflection planes 252, and first end faces 253 and second end faces 254 located at both ends of the first reflection planes 251 and the second reflection planes 251. Two adjacent first reflection planes 251 and two connected second reflection planes 252 are arranged in parallel.
[0059] Exemplarily, the tilt angle of the prism structure 25 in this embodiment is 45°.
[0060] That is, the angle between the first reflection plane 251 and the first end face 253 is 45°, and the angle between the first reflection plane 251 and the second end face 254 is 135°. The angle between the second reflection plane 251 and the first end face 253 is 135°, and the angle between the second reflection plane 252 and the second end face 254 is 45°; or, the angle between the first reflection plane 251 and the first end face 253 is 135°, and the angle between the first reflection plane 251 and the second end face 254 is 45°. The angle between the second reflection plane 251 and the first end face 253 is 45°, and the angle between the second reflection plane 252 and the second end face 254 is 135°.
[0061] Preferably, the first end surface 253 and the second end surface 254 are both arranged flush with the side surfaces of the bottom plate 11 adjacent to both ends of the first reflecting plane 251 .
[0062] Of course, the present application is not limited thereto, and in other embodiments, the inclination angle of the prism structure 25 may be 30°, 60°, or any value between 30° and 60°.
[0063] Embodiment five:
[0064] The photovoltaic assembly in the present application includes a photovoltaic frame and a photovoltaic cell 3 as shown in any one of the first to fourth embodiments.
[0065] For example, refer to Fig. 9 As shown, the photovoltaic frame in this embodiment is as shown in the first embodiment.
[0066] The edge of the photovoltaic cell 3 is fixedly installed in the receiving groove 10 in the photovoltaic frame, and the photovoltaic cell 3 includes a first glass plate 31 and a second glass plate 32 arranged opposite to each other, and a cell sheet 33 encapsulated between the first glass plate 31 and the second glass plate 32, and the second glass plate 32 is arranged toward the bottom plate 11. The cell sheet 33 is bonded to the first glass plate 31 and the second glass plate 32 respectively through a high-transmittance adhesive film 34.
[0067] In this embodiment, in order to reflect all or part of the incident light to the front and back of the photovoltaic cell 3 through the reflective structure 2, on the plane where the upper surface of the base plate 11 is located, the orthographic projection area of the reflective structure 2 is at least partially located outside the orthographic projection area of the cell 33.
[0068] According to this design, the incident light between the frame body 1 and the battery cell 33 is refracted by the first glass plate 31, the high-transmittance adhesive film 34 and the second glass plate 32 in sequence and then irradiates the reflective structure 2 on the bottom plate 11. The incident light can be reflected by the reflective structure 2, and the reflected light is refracted by the second glass plate 32, the high-transmittance adhesive film 34 and the first glass plate 31 and then irradiates the front of the battery cell 33, thereby improving the absorption and utilization rate of part of the sunlight on the front of the battery cell 33, which is beneficial to improving the front power of the photovoltaic module.
[0069] At the same time, the incident light between the frame body 1 and the battery cell 33 is refracted by the first glass plate 31, the high-transmittance adhesive film 34 and the second glass plate 32 in sequence and then irradiates the reflective structure 2 on the bottom plate 11. The incident light can be reflected by the reflective structure 2, and the reflected light is refracted by the second glass plate 32 and the high-transmittance adhesive film 34 and then irradiates the back side of the battery cell 33, thereby improving the absorption and utilization rate of part of the sunlight on the back side of the battery cell 33, which is beneficial to improving the back side power of the photovoltaic module.
[0070] In addition, the design of the reflective structure 2 can reduce the amount of white glaze coating on the second glass plate 32 on the back of the photovoltaic cell 3, reduce the impact of the white glaze coating on the surface stress of the second glass plate 32, thereby avoiding the breakage of the second glass plate 32, reducing the cost of the second glass plate 32, and helping to increase the service life of the photovoltaic module.
[0071] It can be seen from the above technical solutions that the utility model has the following beneficial effects:
[0072] The utility model provides a photovoltaic frame and a photovoltaic module. By arranging a reflection structure on the bottom plate, the incident light passing through the photovoltaic cell can be fully or partially reflected to the front and back of the photovoltaic cell, so as to increase the absorption and utilization of sunlight by the front and back of the photovoltaic cell, which is beneficial to improve the power of the front and back of the photovoltaic module.
[0073] At the same time, the amount of white glaze coating on the second glass on the back of the photovoltaic cell can be reduced, reducing the impact of the white glaze coating on the surface stress of the second glass plate, thereby avoiding the breakage of the second glass plate, reducing the cost of the second glass plate, and helping to increase the service life of the photovoltaic module.
[0074] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
[0075] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A photovoltaic frame, characterized in that: The photovoltaic frame includes a frame body, which has a receiving groove for fixing the edge of the photovoltaic cell. The frame body includes a base plate located below the receiving groove, and a plurality of reflective structures are provided on the upper surface of the base plate. The reflective structures are configured to reflect all or part of the incident light to the front and back sides of the photovoltaic cell.
2. The photovoltaic frame according to claim 1, characterized in that: The frame body also includes a top plate, a connecting plate connecting the top plate and the bottom plate, a supporting plate fixedly mounted on the connecting plate, and a fixing plate connecting the supporting plate and the bottom plate. The receiving groove is formed by surrounding the top plate, the connecting plate and the supporting plate.
3. The photovoltaic frame according to claim 2, characterized in that: The reflective structure is arranged on the upper surface of the bottom plate at a side of the fixing plate away from the connecting plate.
4. The photovoltaic frame according to claim 1, characterized in that: The reflective structure includes a reflective layer.
5. The photovoltaic frame according to claim 4, characterized in that: The reflective layer is a white glaze coating applied on the bottom plate.
6. The photovoltaic frame according to claim 4, characterized in that: The reflective structure further includes a bonding layer and a base layer which are sequentially stacked between the bottom plate and the reflective layer.
7. The photovoltaic frame according to claim 6, characterized in that: The reflective layer is a metal layer formed on the base layer; or, The reflective layer is a white reflective layer, an anti-yellowing layer is arranged between the bonding layer and the base layer, and the white reflective layer and / or the anti-yellowing layer is a fluorine-containing coating.
8. The photovoltaic frame according to claim 1, characterized in that: The reflective structure is a prism structure, the prism structure comprises a first reflective plane and a second reflective plane that are alternately distributed, and the angle between the first reflective plane and the second reflective plane is 100° to 150°; and / or, The reflective structure is a prism structure, and the prism structure is distributed obliquely on the bottom plate, with an inclination angle of 30° to 60°.
9. A photovoltaic module, characterized in that: The photovoltaic assembly includes a photovoltaic frame and a photovoltaic cell as described in any one of claims 1 to 8, the edge of the photovoltaic cell is fixedly installed in a receiving groove in the photovoltaic frame, the photovoltaic cell includes a first glass plate and a second glass plate arranged opposite to each other, and a cell sheet encapsulated between the first glass plate and the second glass plate, and the second glass plate is arranged toward the bottom plate.
10. The photovoltaic module according to claim 9, characterized in that: On the plane where the upper surface of the bottom plate is located, the orthographic projection area of the reflective structure is at least partially located outside the orthographic projection area of the battery cell.