Photovoltaic module

Abstract

The utility model discloses a kind of photovoltaic modules, photovoltaic module includes: frame and photovoltaic laminated part and reflective structure. Frame is formed with mounting groove, mounting groove is suitable for installing photovoltaic laminated part, frame has first surface, first surface is located the light side of photovoltaic laminated part, photovoltaic laminated part has the second surface located light side, the included angle of first surface and second surface is between 120 °-150 ° Angle range;Reflective structure is located the first surface of frame. Thus, part of light that cannot be captured by the second surface edge of photovoltaic laminated part due to being blocked by the first surface of frame can be reused, so that the light incident on the first surface can be reflected to photovoltaic laminated part, reduce edge light loss, increase the contact area of reflective structure and light, improve the overall output power of photovoltaic module, the setting of reflective structure can protect the first surface of frame, prolong the service life and reliability of photovoltaic module.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic technology, and in particular to a photovoltaic module. Background Technology

[0002] In the existing technology, the frame surface of photovoltaic modules is not optically treated. When incident light shines on the frame surface, it is absorbed or scattered and cannot be effectively utilized by the solar cells, resulting in a reduction in the output power of the photovoltaic module. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the purpose of the present invention is to provide a photovoltaic module that can improve the output power of the photovoltaic module.

[0004] According to an embodiment of the present invention, the photovoltaic module includes: a frame, a photovoltaic laminate, and a reflective structure. The frame has a mounting groove adapted to mount the photovoltaic laminate. The frame has a first surface located on the light-facing side of the photovoltaic laminate. The photovoltaic laminate has a second surface located on the light-facing side. The angle between the first surface and the second surface is between 120° and 150°. The reflective structure is disposed on the first surface of the frame.

[0005] According to the photovoltaic module of this utility model embodiment, by setting a reflective structure on the first surface of the frame, a portion of the light that could not be captured by the edge of the second surface of the photovoltaic laminate due to being blocked by the first surface of the frame can be reused, so that the light incident on the first surface can be reflected to the photovoltaic laminate, reducing edge light loss. Furthermore, by limiting the angle range between the first surface and the second surface, the contact area between the reflective structure and the light can be increased, thereby improving the output power of the second surface of the photovoltaic laminate and the overall output power of the photovoltaic module. At the same time, the reflective structure can protect the first surface of the frame, preventing the first surface from absorbing heat and causing local temperature rise, thus extending the service life and reliability of the photovoltaic module.

[0006] In some embodiments, the reflective structure includes: at least one reflective element, the reflective element including a substrate layer, a reflective layer, an adhesive layer, and a protective layer, the reflective layer being disposed on the light-facing side of the substrate layer, the reflective layer being an aluminum-plated structural layer or a reflective coating; the adhesive layer being disposed on the other side of the substrate layer, the adhesive layer being connected to the first surface; the protective layer being disposed on the surface of the reflective layer away from the substrate layer; the outer surface of the substrate layer including a third surface, a fourth surface, and a fifth surface connected end to end, the adhesive layer being disposed between the fifth surface and the first surface, the reflective layer being disposed between the third surface and the fourth surface; the third surface and the fifth surface form an angle θ1, the θ1 satisfying: 30°≤θ1≤60°; and / or, the fourth surface and the fifth surface form an angle θ2, the θ2 satisfying: 30°≤θ2≤60°; and / or, the third surface and the fourth surface form an angle θ3, the θ3 satisfying: 0°<θ3≤90°.

[0007] In some embodiments, the reflective structure includes: a reflector having a length L1 along the width direction of the frame, wherein L1 satisfies: 0.5mm≤L1≤1.5mm; and / or, the reflector having a height H1 along the thickness direction of the frame, wherein H1 satisfies: 90μm≤H1≤120μm.

[0008] In some embodiments, the reflective structure includes a plurality of reflective elements, which are arranged sequentially along the width direction of the frame.

[0009] In some embodiments, the heights of the plurality of reflective elements in the thickness direction of the frame are all equal, and the height of the reflective element along the thickness direction of the frame is H2, wherein H2 satisfies: 10μm≤H2≤20μm; and / or, the length of the reflective element along the width direction of the frame is L2, wherein L2 satisfies: 70μm≤L2≤120μm.

[0010] In some embodiments, the height of the plurality of reflectors in the thickness direction of the frame gradually decreases along the width direction of the frame toward the photovoltaic laminate.

[0011] In some embodiments, the plurality of reflective elements include: a first reflective element and a second reflective element, wherein the first reflective element and the second reflective element are arranged sequentially along the width direction of the frame and toward the photovoltaic laminate, the height of the second reflective element along the thickness direction of the frame is H3, and the height of the first reflective element along the thickness direction of the frame is H4, wherein H3 and H4 satisfy: 1 / 2H3≤H4≤2 / 3H3.

[0012] In some embodiments, the number of reflectors is N, where N satisfies: 60 ≤ N ≤ 120.

[0013] In some embodiments, the reflective structure extends obliquely on the first surface, and the angle between the direction of the oblique extension of the reflective structure and the width direction of the frame is θ4, wherein θ4 satisfies: 30°≤θ4≤60°.

[0014] In some embodiments, the length of the first surface along the width direction of the frame is L3, wherein L3 satisfies: 10mm≤L3≤11mm; and / or, the length of the projection of the reflective structure on the first surface along the width direction of the frame is L4, wherein L4 satisfies: 3mm≤L4≤6mm.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a partial schematic diagram of a photovoltaic module according to an embodiment of the present utility model;

[0018] Figure 2 This is a partial schematic diagram of the border according to an embodiment of the present utility model;

[0019] Figure 3 This is a schematic diagram of a reflective structure according to an embodiment of the present utility model, including a reflective element;

[0020] Figure 4 This is a schematic diagram of a reflective structure according to an embodiment of the present utility model, comprising multiple reflective elements of the same shape;

[0021] Figure 5 This is a schematic diagram of a reflective structure according to an embodiment of the present invention, comprising multiple reflective elements with gradually decreasing shapes;

[0022] Figure 6 This is a schematic diagram of the reflective structure extending at an angle on the first surface.

[0023] Figure label:

[0024] 100. Photovoltaic modules;

[0025] 10. Frame; 11. Frame support surface; 12. Mounting slot; 13. First surface; 14. Second surface; 15. Reflective structure; 16. Reflective element; 161. Third surface; 162. Fourth surface; 163. Fifth surface; 164. Protective layer; 17. First reflective element; 18. Second reflective element;

[0026] 20. Photovoltaic laminate; 21. Solar cell; 22. Encapsulant film; 23. Glass substrate; 24. Glass backsheet. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Figures 1-6 A photovoltaic module 100 according to an embodiment of the present utility model is described. The photovoltaic module 100 includes: a frame 10, a photovoltaic laminate 20, and a reflective structure 15.

[0028] Specifically, such as Figure 1 and Figure 2 As shown, the frame 10 has a mounting groove 12, which is suitable for mounting the photovoltaic laminate 20. The frame 10 has a first surface 13 located on the light-facing side of the photovoltaic laminate 20. The photovoltaic laminate 20 has a second surface 14 located on the light-facing side. The angle between the first surface 13 and the second surface 14 is between 120° and 150°. A reflective structure 15 is provided on the first surface 13 of the frame 10.

[0029] The frame 10 surrounds the outer periphery of the photovoltaic laminate 20. The frame 10 forms a mounting groove 12, which is suitable for mounting the photovoltaic laminate 20. The two side walls of the mounting groove 12 along the height direction of the frame 10, that is, along the thickness direction of the photovoltaic laminate 20, respectively abut against the two side surfaces of the photovoltaic laminate 20 along the thickness direction to mount the photovoltaic laminate 20. The upper surface of the frame 10, i.e. the side of the mounting groove 12 away from the photovoltaic laminate 20 and close to the light along the thickness direction of the photovoltaic laminate 20, is the first surface 13. The side of the photovoltaic laminate 20 close to the light along the thickness direction is the second surface 14. The reflective structure 15 is disposed on the first surface 13 of the frame 10. The reflective structure 15 is adapted to reflect the light irradiated to the first surface 13 to the second surface 14 of the photovoltaic laminate 20. When the included angle between the first surface 13 and the second surface 14 is between 120° and 150°, the contact area between the reflective structure 15 and the light can be increased, thereby improving the light utilization rate of the reflective structure 15.

[0030] According to the photovoltaic module 100 of this utility model embodiment, by providing a reflective structure 15 on the first surface 13 of the frame 10, a portion of the light that could not be captured by the edge of the second surface 14 of the photovoltaic laminate 20 due to being blocked by the first surface 13 of the frame 10 can be reused. This allows the light incident on the first surface 13 to be reflected to the photovoltaic laminate 20, reducing edge light loss. Furthermore, by limiting the angle range between the first surface 13 and the second surface 14, the contact area between the reflective structure 12 and the light can be increased, thereby improving the output power of the second surface 14 of the photovoltaic laminate 20 and the overall output power of the photovoltaic module 100. At the same time, the reflective structure 15 can protect the first surface 13 of the frame 10, preventing the first surface 13 from absorbing heat and causing a local temperature rise, thus extending the service life and reliability of the photovoltaic module 100.

[0031] In this embodiment, as Figure 1 As shown, the photovoltaic laminate 20 includes a solar cell 21, an encapsulant film 22, a glass substrate 23, and a glass backplate 24. The glass substrate 23 and the glass backplate 24 are respectively disposed on both sides of the solar cell 21 along the thickness direction. The encapsulant film 22 is respectively disposed between the glass substrate 23 and the solar cell 21 and between the glass backplate 24 and the solar cell 21. The surface of the glass substrate 23 away from the encapsulant film 22 along the thickness direction of the photovoltaic laminate 20 is the second surface 14 of the photovoltaic laminate 20. The reflective structure 15 reflects the light irradiated to the first surface 13 onto the second surface 14 of the photovoltaic laminate 20, thereby irradiating the solar cell 21 and increasing the secondary utilization of light.

[0032] According to some embodiments of the present invention, the reflective structure 15 includes: at least one reflective element 16, the reflective element 16 including a substrate layer, a reflective layer, an adhesive layer, and a protective layer 164; the reflective layer is disposed on the light-facing side of the substrate layer, and the reflective layer is an aluminum-plated structural layer or a reflective coating; the adhesive layer is disposed on the other side of the substrate layer and is connected to the first surface 13; the protective layer 164 is disposed on the surface of the reflective layer away from the substrate layer; the outer surface of the substrate layer includes a third surface 161, a fourth surface 162, and a fifth surface 163 connected end to end, and the adhesive layer is disposed between the fifth surface 163 and the first surface 13. Between the third surface 161 and the fourth surface 162, a reflective layer is disposed; the third surface 161 and the fifth surface 163 form an angle θ1, θ1 satisfying: 30°≤θ1≤60°; or, the fourth surface 162 and the fifth surface 163 form an angle θ2, θ2 satisfying: 30°≤θ2≤60°; or, the third surface 161 and the fourth surface 162 form an angle θ3, θ3 satisfying: 0°<θ3≤90°; or, θ1 satisfies: 30°≤θ1≤60°, θ2 satisfies: 30°≤θ2≤60°, and θ3 satisfies: 0°<θ3≤90°.

[0033] An adhesive layer is disposed on the first surface 13 along the thickness direction of the frame 10. The substrate layer, adjacent to the outer surface of the adhesive layer along the thickness direction of the frame 10, is a fifth surface 163. The fifth surface 163 is disposed on the side of the adhesive layer away from the first surface 13 along the thickness direction of the frame 10. The outer surfaces of the substrate layer away from the adhesive layer along the thickness direction of the frame 10 are the third surface 161 and the fourth surface 162, respectively. Both the third surface 161 and the fourth surface 162 are provided with reflective layers, which possess excellent weather resistance, UV resistance, and corrosion resistance. Figure 3 The protective layer 164 is respectively disposed on the side of the reflective layer away from the substrate layer on the third surface 161 and the fourth surface 162. The thickness of the protective layer 164 is in the range of 5μm-10μm. The protective layer 164 can be made of materials such as acrylic resin, epoxy resin, and fluorocarbon resin. The protective layer 164 is a transparent part. The protective layer 164 has excellent weather resistance, thereby ensuring that the reflective layer fully absorbs and reflects light, improving the weather resistance of the reflective layer and the first surface 13 of the frame 10, and extending the service life of the reflective element 16 and the frame 10. In this embodiment, the third surface 161, the fourth surface 162, and the fifth surface 163 together form a triangular prism structure with a triangular cross-sectional shape. The third surface 161 and the fourth surface 162 are suitable for reflecting light that is irradiated onto the first surface 13. The third surface 161 is the side surface of the reflector 16 that is away from the photovoltaic laminate 20 along the extension direction of the first surface 13, and the fourth surface 162 is the side surface of the reflector 16 that is adjacent to the photovoltaic laminate 20 along the extension direction of the first surface 13. The fifth surface 163 can be completely adhered to the adhesive layer or can form a certain angle with the adhesive layer. Taking the fourth surface 162 as an example, light is irradiated onto the fourth surface 162 at a certain angle and reflected onto the second surface 14 of the photovoltaic laminate 20 at a certain angle.

[0034] When the angle between the third surface 161 and the fifth surface 163 is less than 30°, the angle is too small, which may reduce the contact area between the fourth surface 162 and the light, and reduce the output power of the second surface 14 of the photovoltaic laminate 20. For example, θ1 = 45°.

[0035] When the angle between the fourth surface 162 and the fifth surface 163 is greater than 60°, the angle between them is too large, which may reduce the contact area between the fourth surface 162 and the light, and reduce the output power of the second surface 14 of the photovoltaic laminate 20. For example, θ2 = 45°.

[0036] When the angle between the third surface 161 and the fourth surface 162 is greater than 90°, the angle is too large, which may result in a smaller area of ​​the reflective layer on the fourth surface 162 reflecting light to the second surface 14 of the photovoltaic laminate 20, thus reducing the output power of the photovoltaic laminate 20. For example, θ3 = 45°.

[0037] Therefore, by setting a substrate layer, a reflective layer, an adhesive layer, and a protective layer 164, the reliability and stability of the reflective layer can be improved, as well as the weather resistance of the reflective element 16 can be improved. At the same time, the reflective element 16 can protect the first surface 13 of the frame 10 from environmental erosion, reduce the risk of edge aging of the frame 10, and extend the service life of the photovoltaic module 100. By adjusting the angle between the third surface 161 and the fifth surface 163, or the angle between the fourth surface 162 and the fifth surface 163, or the angle between the third surface 161 and the fourth surface 162, the light intensity of different areas of the second surface 14 of the photovoltaic laminate 20 can be adjusted, improving the adaptability and adjustability of the reflective structure 15. By setting the reflective layer on the third surface 161 and the fourth surface 162, the reflective element 16 can absorb incident light from multiple directions, increasing the contact area between the reflective element 16 and the light, increasing the secondary absorption and utilization of light, improving the light utilization rate of the reflective element 16, and increasing the output power of the second surface 14 of the photovoltaic laminate 20.

[0038] Furthermore, since θ2 < θ1, when the third surface 161 cannot reflect light to the second surface 14 of the photovoltaic laminate 20, the contact area between the fourth surface 162 and the light can be increased, thereby reducing light loss and increasing the output power of the second surface 14 of the photovoltaic laminate 20.

[0039] Optionally, at least one of the third surface 161, the fourth surface 162, and the fifth surface 163 is formed as an arc surface.

[0040] According to some embodiments of this utility model, at least one of the third surface 161, the fourth surface 162, and the fifth surface 163 forms an angle α with the adhesive layer, where α satisfies: 0°≤α≤90°. For example, α=45°. In this embodiment, taking the fifth surface 163 as an example, the fifth surface 163 is not completely adhered to the adhesive layer, and the angle between the fifth surface 163 and the adhesive layer can be specifically set according to actual needs. Thus, when the angle between the fifth surface 163 and the adhesive layer increases to a certain extent, light can be reflected from the third surface 161 and the fourth surface 162 to the second surface 14 of the photovoltaic laminate 20. The light intensity of different areas of the second surface 14 of the photovoltaic laminate 20 can be adjusted according to needs, thereby increasing the output power of the second surface 14 of the photovoltaic laminate 20.

[0041] According to some embodiments of this utility model, such as Figure 2 As shown, the frame 10 includes a frame support surface 11, which extends along the thickness direction of the frame 10. The frame support surface 11 is adapted to support the first surface 13. The edges of the frame support surface 11 and the first surface 13 are connected to each other. The included angle between the frame support surface 11 and the first surface 13 is β, where β satisfies: 0°<β≤90°. Further, β satisfies: 30°≤β≤90°. When the fifth surface 163 is bonded to the adhesive layer, the light intensity of different areas of the second surface 14 of the photovoltaic laminate 20 can be adjusted by adjusting the included angle between the frame support surface 11 and the first surface 13, thereby increasing the effective reflective area of ​​the reflector 16, improving the light utilization rate of the reflector 16, and increasing the output power of the second surface 14 of the photovoltaic laminate 20.

[0042] According to some embodiments of this utility model, such as Figure 3 As shown, the reflective structure 15 includes: a reflective element 16, the length of the reflective element 16 along the width direction of the frame 10 is L1, and L1 satisfies: 0.5mm≤L1≤1.5mm; or, the height of the reflective element 16 along the thickness direction of the frame 10 is H1, and H1 satisfies: 90μm≤H1≤120μm.

[0043] When the length of the reflector 16 along the width direction of the frame 10 is less than 0.5mm, the length of the reflector 16 along the width direction of the frame 10 is small, which may result in a small contact area between the reflector 16 and the light, and a large light loss. When the length of the reflector 16 along the width direction of the frame 10 is greater than 1.5mm, the length of the reflector 16 along the width direction of the frame 10 is large, which may increase production costs. For example, L1 = 1mm.

[0044] When the height of the reflector 16 along the thickness direction of the frame 10 is less than 90 μm, the height of the reflector 16 along the thickness direction of the frame 10 is small, which may result in a smaller area of ​​the reflector 16 reflecting light to the photovoltaic laminate 20, thus reducing the output power of the second surface 14 of the photovoltaic laminate 20. When the height of the reflector 16 along the thickness direction of the frame 10 is greater than 120 μm, the height of the reflector 16 along the thickness direction of the frame 10 is large, which may increase production costs. For example, H1 = 100 μm.

[0045] In this embodiment, L1 satisfies: 0.5mm≤L1≤1.5mm, and H1 satisfies: 90μm≤H1≤120μm.

[0046] Therefore, by limiting the length range of the reflector 16 along the width direction of the frame 10 and the height range of the reflector 16 along the thickness direction of the frame 10, light loss can be reduced, the area of ​​the reflector 16 reflecting light to the photovoltaic laminate 20 can be increased, and the output power of the second surface 14 of the photovoltaic laminate 20 can be improved.

[0047] According to some embodiments of this utility model, such as Figure 4 and Figure 5 As shown, the reflective structure 15 includes a plurality of reflective elements 16, which are arranged sequentially along the width direction of the frame 10.

[0048] Multiple reflectors 16 are arranged sequentially along the direction extending from the first surface 13 toward the central region of the photovoltaic laminate 20. Light can be reflected by the multiple reflectors 16 to multiple regions of the second surface 14 of the photovoltaic laminate 20, thereby increasing the output power of the second surface 14 of the photovoltaic laminate 20 and reducing light loss. At the same time, the contact area between the reflectors 16 and the light can be increased by increasing the angle between the fifth surface 163 of the multiple reflectors 16 and the first surface 13, thereby increasing the output power of the photovoltaic module 100.

[0049] According to some embodiments of this utility model, such as Figure 4 As shown, the height of the multiple reflectors 16 in the thickness direction of the frame 10 is equal, and the height of the reflector 16 in the thickness direction of the frame 10 is H2, which satisfies: 10μm≤H2≤20μm; or, the length of the reflector 16 in the width direction of the frame 10 is L2, which satisfies: 70μm≤L2≤120μm.

[0050] When the height of the reflector 16 along the thickness direction of the frame 10 is less than 10 μm, the height of the reflector 16 along the thickness direction of the frame 10 is small, which may result in a smaller area of ​​the reflector 16 reflecting light to the photovoltaic laminate 20, thus reducing the output power of the second surface 14 of the photovoltaic laminate 20. When the height of the reflector 16 along the thickness direction of the frame 10 is greater than 20 μm, the height of the reflector 16 along the thickness direction of the frame 10 is large, which may increase production costs. For example, H2 = 15 μm.

[0051] When the length of the reflector 16 along the width direction of the frame 10 is less than 70 μm, the length of the reflector 16 along the width direction of the frame 10 is relatively small, which may result in a smaller contact area between the reflector 16 and the light, leading to greater light loss. When the length of the reflector 16 along the width direction of the frame 10 is greater than 120 μm, the length of the reflector 16 along the width direction of the frame 10 is relatively large, which may increase production costs. For example, L2 = 100 μm.

[0052] In this embodiment, H2 satisfies: 10μm≤H2≤20μm; at the same time, L2 satisfies: 70μm≤L2≤120μm.

[0053] Therefore, by limiting the length range of multiple reflectors 16 along the width direction of the frame 10 and the height range of multiple reflectors 16 along the thickness direction of the frame 10, light loss can be reduced, the area of ​​the reflectors 16 reflecting light to the photovoltaic laminate 20 can be increased, and the output power of the second surface 14 of the photovoltaic laminate 20 can be improved. At the same time, since the multiple reflectors 16 have the same shape, the processing difficulty of the reflective structure 15 can be reduced.

[0054] Optionally, when the heights of the multiple reflectors 16 in the thickness direction of the frame 10 are all equal, the included angle θ3 between the third surface 161 and the fourth surface 162 of the multiple reflectors 16 satisfies: 110°≤θ3≤130°.

[0055] Optionally, such as Figure 5 As shown, the height of the multiple reflectors 16 in the thickness direction of the frame 10 gradually decreases along the width direction of the frame 10 towards the photovoltaic laminate 20. That is, the cross-sectional area of ​​the multiple reflectors 16 gradually decreases along the direction extending from the first surface 13 towards the central region of the photovoltaic laminate 20. This reduces the obstruction of light reflected by reflectors 16 in the central region of the photovoltaic laminate 20 by reflectors 16 in the region far from the central region, reducing light loss, increasing the effective reflective area of ​​the multiple reflectors 16, increasing the secondary absorption and utilization of sunlight by the reflectors 16, and improving the output power of the second surface 14 of the photovoltaic laminate 20, thereby increasing the overall output power of the photovoltaic module 100. At this time, the included angle θ3 between the third surface 161 and the fourth surface 162 of the multiple reflectors 16 satisfies: 0° < θ3 ≤ 90°.

[0056] According to some embodiments of this utility model, such as Figure 5 As shown, the plurality of reflective elements 16 include: a first reflective element 17 and a second reflective element 18. The first reflective element 17 and the second reflective element 18 are arranged sequentially along the width direction of the frame 10 and toward the photovoltaic laminate 20. The height of the second reflective element 18 along the thickness direction of the frame 10 is H3, and the height of the first reflective element 17 along the thickness direction of the frame 10 is H4. H3 and H4 satisfy: 1 / 2H3≤H4≤2 / 3H3.

[0057] That is, the first reflector 17 is disposed on the side of the second reflector 18 along the width direction of the frame 10 and towards the photovoltaic laminate 20. By limiting the height relationship between the first reflector 17 along the thickness direction of the frame 10 and the second reflector 18 along the thickness direction of the frame 10, the shading of the light reflected by the third surface 161 of the first reflector 17 to the fourth surface 162 of the second reflector 18 can be effectively reduced, light loss can be reduced, and the overall output power of the photovoltaic module 100 can be improved.

[0058] According to some embodiments of this utility model, the number of reflective elements 16 is N, where N satisfies: 60≤N≤120.

[0059] When the number of reflective elements 16 is less than 60, the number of reflective elements 16 is too small, which may lead to a reduction in the contact area between the reflective elements 16 and the light, resulting in a smaller area where the reflective elements 16 reflect light onto the photovoltaic laminate 20, and a decrease in the output power of the second surface 14 of the photovoltaic laminate 20. When the number of reflective elements 16 is greater than 120, the number of reflective elements 16 is too large, which may lead to an increase in production costs. For example, N=100.

[0060] Therefore, by limiting the range of the number of reflectors 16, the contact area between the reflectors 16 and the light can be increased, the area of ​​the reflectors 16 reflecting the light to the photovoltaic laminate 20 can be increased, the output power of the second surface 14 of the photovoltaic laminate 20 can be improved, and the production cost can be reduced at the same time.

[0061] According to some embodiments of this utility model, such as Figure 6 As shown, the reflective structure 15 extends obliquely on the first surface 13, and the angle between the direction of the oblique extension of the reflective structure 15 and the width direction of the frame 10 is θ4, wherein θ4 satisfies: 30°≤θ4≤60°.

[0062] The angle between the inclined extension direction of the reflective structure 15 and the width direction of the frame 10 is the diagonal angle of the reflective structure 15. Preferably, θ4 = 45°. When an angle is formed between the fifth surface 163 and the first surface 13, both the third surface 161 and the fourth surface 162 can reflect light to the second surface 14 of the photovoltaic laminate 20, thereby maximizing the effective reflective area of ​​the reflective structure 15, improving the light utilization rate of the reflective element 16, and increasing the output power of the light-facing surface of the photovoltaic laminate 20.

[0063] According to some embodiments of the present invention, the length of the first surface 13 along the width direction of the frame 10 is L3, and L3 satisfies: 10mm≤L3≤11mm; or, the length of the projection of the reflective structure 15 on the first surface 13 along the width direction of the frame 10 is L4, and L4 satisfies: 3mm≤L4≤6mm.

[0064] When the length of the first surface 13 along the width direction of the frame 10 is greater than 11 mm, the length of the first surface 13 along the width direction of the frame 10 is too large, which may increase the shading area of ​​the first surface 13 on the edge region of the second surface 14 of the photovoltaic laminate 20. For example, L3 = 10.5 mm.

[0065] When the length of the projection of the reflective structure 15 on the first surface 13 along the width direction of the frame 10 is less than 3mm, the length of the projection of the reflective structure 15 on the first surface 13 along the width direction of the frame 10 is too small, which may reduce the contact area between the reflective structure 15 and the light, resulting in a smaller area where the reflective structure 15 reflects light to the photovoltaic laminate 20, and a decrease in the output power of the second surface 14 of the photovoltaic laminate 20. When the length of the projection of the reflective structure 15 on the first surface 13 along the width direction of the frame 10 is greater than 6mm, the length of the projection of the reflective structure 15 on the first surface 13 along the width direction of the frame 10 is too large, which may increase production costs. For example, L4 = 5mm.

[0066] Optionally, L3 satisfies: 10mm≤L3≤11mm, and L4 satisfies: 3mm≤L4≤6mm.

[0067] Therefore, by limiting the length range of the first surface 13 along the width direction of the frame 10, and limiting the length range of the projection of the reflective structure 15 on the first surface 13 along the width direction of the frame 10, the shading area of ​​the first surface 13 on the edge region of the second surface 14 of the photovoltaic laminate 20 can be reduced, the contact area between the reflective structure 15 and the light can be increased, the area of ​​the reflective structure 15 reflecting the light to the photovoltaic laminate 20 can be increased, the output power of the second surface 14 of the photovoltaic laminate 20 can be improved, and the output power and reliability of the photovoltaic module 100 can be improved.

[0068] By fitting the edge of the photovoltaic laminate 20 into the mounting groove 12, the photovoltaic laminate 20 can be effectively fixed. The reflective structure 15 is provided on the first surface 13 of the frame 10, which can reuse some of the light that could not be captured by the edge of the second surface 14 of the photovoltaic laminate 20 due to being blocked by the first surface 13, thereby reducing edge light loss and improving the output power of the second surface 14 of the photovoltaic laminate 20. At the same time, the reflective structure 15 can protect the first surface 13, prevent the first surface 13 from absorbing heat and causing local temperature rise, and extend the service life and reliability of the photovoltaic module 100.

[0069] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0070] In the description of this utility model, "first feature" and "second feature" may include one or more of the features. In the description of this utility model, "multiple" means two or more. In the description of this utility model, "above" or "below" the second feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. In the description of this utility model, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature.

[0071] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0072] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A photovoltaic module, characterized in that, include: The frame and the photovoltaic laminate are provided. The frame has a mounting groove adapted to mount the photovoltaic laminate. The frame has a first surface located on the light-facing side of the photovoltaic laminate. The photovoltaic laminate has a second surface located on the light-facing side. The angle between the first surface and the second surface is between 120° and 150°. A reflective structure is disposed on the first surface of the frame.

2. The photovoltaic module according to claim 1, characterized in that, The reflective structure includes: At least one reflector, the reflector comprising: Substrate layer; A reflective layer is disposed on the light-facing side of the substrate layer, and the reflective layer is an aluminum-plated structural layer or a reflective coating. An adhesive layer is disposed on the other side of the substrate layer and is connected to the first surface; A protective layer is disposed on the surface of the reflective layer away from the substrate layer; The outer surface of the substrate layer includes a third surface, a fourth surface, and a fifth surface connected end to end; the adhesive layer is disposed between the fifth surface and the first surface; and the reflective layer is disposed between the third surface and the fourth surface. The third surface and the fifth surface form an angle θ1, wherein θ1 satisfies: 30°≤θ1≤60°; and / or, The fourth surface and the fifth surface form an angle θ2, wherein θ2 satisfies: 30°≤θ2≤60°; and / or, The third surface and the fourth surface form an angle θ3, wherein θ3 satisfies: 0°<θ3≤90°.

3. The photovoltaic module according to claim 1, characterized in that, The reflective structure includes: A reflector, the reflector having a length L1 along the width direction of the frame, wherein L1 satisfies: 0.5mm ≤ L1 ≤ 1.5mm; and / or, The height of the reflector along the thickness direction of the frame is H1, and H1 satisfies: 90μm≤H1≤120μm.

4. The photovoltaic module according to claim 1, characterized in that, The reflective structure includes: Multiple reflective elements are arranged sequentially along the width direction of the frame.

5. The photovoltaic module according to claim 4, characterized in that, The plurality of reflective elements have equal heights along the thickness direction of the frame, and the height of each reflective element along the thickness direction of the frame is H2, wherein H2 satisfies: 10μm≤H2≤20μm; and / or, The length of the reflector along the width direction of the frame is L2, and L2 satisfies: 70μm≤L2≤120μm.

6. The photovoltaic module according to claim 4, characterized in that, The height of the plurality of reflective elements in the thickness direction of the frame gradually decreases along the width direction of the frame toward the photovoltaic laminate.

7. The photovoltaic module according to claim 6, characterized in that, The plurality of the aforementioned reflective elements include: First reflector; The second reflector is provided. The first reflector and the second reflector are arranged sequentially along the width direction of the frame and toward the photovoltaic laminate. The height of the second reflector along the thickness direction of the frame is H3, and the height of the first reflector along the thickness direction of the frame is H4. H3 and H4 satisfy: 1 / 2H3≤H4≤2 / 3H3.

8. The photovoltaic module according to claim 2, characterized in that, The number of reflective elements is N, and N satisfies: 60≤N≤120.

9. The photovoltaic module according to claim 1, characterized in that, The reflective structure extends obliquely on the first surface, and the angle between the direction of the oblique extension of the reflective structure and the width direction of the frame is θ4, wherein θ4 satisfies: 30°≤θ4≤60°.

10. The photovoltaic module according to any one of claims 1-9, characterized in that, The length of the first surface along the width direction of the border is L3, where L3 satisfies: 10mm ≤ L3 ≤ 11mm; and / or, The projection of the reflective structure onto the first surface has a length L4 along the width direction of the frame, and L4 satisfies: 3mm≤L4≤6mm.

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