Photovoltaic module

Abstract

The utility model discloses a photovoltaic module, photovoltaic module includes photovoltaic body, including the first surface and second surface who distributes in the thickness direction opposite, and be located between a plurality of side surface of first surface and second surface, a plurality of side surface form a plurality of corner portion in turn intersect, a plurality of water blocking layer, the plurality of side surface are covered in proper order, and the water blocking layer of adjacent arrangement forms the joint in the corner portion, a plurality of waterproof article, respectively set up in a plurality of corner portion of photovoltaic body, and cover the joint. According to the photovoltaic module of the utility model, set up a plurality of waterproof article, and the water vapor permeation channel at the joint is blocked, and the water vapor permeation performance of photovoltaic module is improved. In addition, simple structure, and the production cost is lower.

Description

Technical Field

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

[0002] As photovoltaic (PV) cell costs are optimized and efficiency improves, their resistance to water vapor corrosion gradually decreases, thus increasing the requirements for the water vapor penetration resistance of PV modules after encapsulation. Currently, both HJT and Topcon modules are at risk of failure under high temperature and humidity conditions.

[0003] In related technologies, the production cost of photovoltaic modules is higher after adding water-blocking components, and the waterproofing effect of the photovoltaic modules around their perimeter is poor. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a photovoltaic module with multiple waterproof components that block water vapor permeation channels at the joints, thereby improving the waterproof performance of the photovoltaic module. Furthermore, it has a simple structure and low production cost.

[0005] A photovoltaic module according to a first aspect of the present invention includes: a photovoltaic body, comprising a first surface and a second surface that are relatively distributed in the thickness direction, and a plurality of side surfaces located between the first surface and the second surface, wherein the plurality of side surfaces intersect in sequence to form a plurality of corners; a plurality of water-blocking layers that sequentially cover the plurality of side surfaces, wherein adjacent water-blocking layers form a joint at the corners; and a plurality of waterproof components that are respectively disposed at the plurality of corners of the photovoltaic body and cover the joints.

[0006] The photovoltaic module according to this invention effectively blocks water vapor penetration channels at the joints by incorporating multiple waterproof components, thereby improving the internal electrical safety of the photovoltaic module and extending its service life. Furthermore, it reduces moisture penetration at the four corners of the solar cells during electroluminescence (EL) operation, further extending the lifespan of the solar cells. In addition, the waterproof components have a simple structure, reducing production and installation difficulties and improving production efficiency.

[0007] According to some embodiments of the present invention, each of the waterproof components includes: a first waterproof portion, which covers the corner and the ends of two adjacent water-blocking layers forming the corner; and two second waterproof portions, which are respectively located on the first surface and the second surface, and are respectively connected to both sides of the first waterproof portion along the thickness direction, wherein the cross-sectional shape of the second waterproof portion in the direction parallel to the first surface or the second surface is triangular or L-shaped.

[0008] According to some embodiments of the present invention, each of the water-blocking layers includes: a first water-blocking surface covering the side surface; two second water-blocking surfaces located on the first surface and the second surface respectively, and connected to both sides of the first water-blocking surface along the thickness direction respectively; the portion of the second water-blocking surface that forms the joint is located between the second waterproof part and the photovoltaic body; and the size of the second water-blocking surface is smaller than the size of the second waterproof part in the direction perpendicular to the side surface and parallel to the first surface.

[0009] According to some embodiments of the present invention, the dimension of the second water-blocking surface is W in the direction perpendicular to the side extension and parallel to the first surface, wherein W satisfies: 1mm≤W≤10mm.

[0010] According to some embodiments of the present invention, the cross-sectional shape of the second waterproof part is a right triangle, the two right-angled sides of the second waterproof part are parallel to the two adjacent side surfaces respectively, the hypotenuse of the second waterproof part is connected between the two adjacent side surfaces, and the length of at least one right-angled side of the second waterproof part is L1, wherein L1 satisfies: 5mm≤L1≤40mm.

[0011] According to some embodiments of the present invention, when the cross-sectional shape of the second waterproof part is L-shaped, the two sides of the second waterproof part extend along the two adjacent sides respectively, and the length of the side is L2 and the width is D1, wherein L2 and D1 respectively satisfy: 10mm≤L2≤200mm, 2mm≤D1≤15mm.

[0012] According to some embodiments of the present invention, the thickness of the waterproof component is H1, wherein H1 satisfies: 0.1mm≤H1≤3mm.

[0013] According to some embodiments of this utility model, the waterproof component is a hot melt adhesive component.

[0014] According to some embodiments of the present invention, the hot melt adhesive component includes butyl rubber component, polyolefin component, polyamide component, polyurethane component, or polyester component.

[0015] According to some embodiments of the present invention, the water-blocking layer includes: an adhesive layer; a barrier layer disposed on one side of the adhesive layer in the thickness direction; and a support layer disposed between the adhesive layer and the barrier layer, or the support layer disposed on the side of the barrier layer away from the adhesive layer.

[0016] According to some embodiments of the present invention, there are multiple support layers, and the multiple support layers are respectively disposed on both sides of the thickness direction of the barrier layer.

[0017] According to some embodiments of the present invention, the thickness of the adhesive layer is H2, wherein H2 satisfies: 10μm≤H2≤80μm; and / or, the thickness of the barrier layer is H3, wherein H3 satisfies: 5μm≤H3≤30μm; and / or, the thickness of the support layer is H4, wherein H4 satisfies: 10μm≤H4≤50μm.

[0018] According to some embodiments of the present invention, the photovoltaic body includes a first cover plate, a first adhesive film, a battery cell layer, a second adhesive film, and a second cover plate stacked sequentially, wherein the first adhesive film and / or the second adhesive film are EVA adhesive films.

[0019] 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

[0020] 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:

[0021] Figure 1 This is a top view of a photovoltaic module according to an embodiment of the present invention, wherein the cross-sectional shape of the second waterproof part is triangular;

[0022] Figure 2 This is a top view of a photovoltaic module according to another embodiment of the present invention, wherein the cross-sectional shape of the second waterproof part is L-shaped;

[0023] Figure 3 This is a cross-sectional schematic diagram of a photovoltaic module according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of a water-blocking layer according to an embodiment of the present invention, wherein the support layer is located between the adhesive layer and the barrier layer;

[0025] Figure 5 This is a schematic diagram of a water-blocking layer according to an embodiment of the present invention, wherein the barrier layer is located between the support layer and the adhesive layer;

[0026] Figure 6 This is a schematic diagram of the structure of the water-blocking layer according to an embodiment of the present invention, wherein there are two support layers;

[0027] Figure 7 This is a schematic diagram of the assembly of the water-blocking layer and the photovoltaic body according to an embodiment of the present invention;

[0028] Figure 8 This is a schematic diagram of the assembly of the waterproof component and the photovoltaic body according to an embodiment of the present invention.

[0029] Figure label:

[0030] 100. Photovoltaic modules;

[0031] 1. Photovoltaic body; 11. First surface; 12. Second surface;

[0032] 13. Side view; 14. Corner; 15. Battery cell layer;

[0033] 2. Water-blocking layer; 21. Adhesive layer; 22. Barrier layer; 23. Supporting layer;

[0034] 24. Release film; 25. End;

[0035] 26. First water-blocking surface; 27. Second water-blocking surface;

[0036] 3. Waterproof components; 31. First waterproof section;

[0037] 32. Second waterproof section; 321. Side;

[0038] 322. Hydrated edge; 323. Right-angled edge; 33. Waterproof adhesive layer;

[0039] 4. Joints. Detailed Implementation

[0040] The embodiments of this utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Figures 1-8 A photovoltaic module 100 according to an embodiment of the present utility model is described.

[0041] like Figure 1 As shown, the photovoltaic module 100 according to the first aspect of the present invention includes a photovoltaic body 1, a plurality of water-blocking layers 2 and a plurality of waterproof components 3.

[0042] Specifically, the photovoltaic body 1 includes components in the thickness direction (i.e.) Figure 3 The photovoltaic body 1 has a first surface 11 and a second surface 12 (in the direction indicated by the middle arrow E) that are relatively distributed, and multiple side surfaces 13 located between the first surface 11 and the second surface 12. The multiple side surfaces 13 intersect sequentially to form multiple corners 14. Multiple water-blocking layers 2 sequentially cover the multiple side surfaces 13, and adjacent water-blocking layers 2 form a joint 4 at the corners 14. Multiple waterproof components 3 are respectively disposed at the multiple corners 14 of the photovoltaic body 1 and cover the joints 4.

[0043] For example, the photovoltaic body 1 can be rectangular. The photovoltaic body 1 includes a first surface 11 (i.e., the upper surface or light-facing surface) and a second surface 12 (i.e., the lower surface or backlighting surface) distributed relatively in the thickness direction, and four side surfaces 13 located between the first surface 11 and the second surface 12. The four side surfaces 13 are connected sequentially to form the four sides of the photovoltaic body 1. The intersections of two adjacent side surfaces 13 form four corners 14. The number of water-blocking layers 2 matches the number of side surfaces 13. When the photovoltaic body 1 is rectangular, four water-blocking layers 2 can be provided on the four side surfaces 13 of the photovoltaic body 1. The four water-blocking layers 2 wrap around the four side surfaces 13 of the photovoltaic body 1, and two adjacent water-blocking layers 2 overlap at the corners 14, thus forming four joints 4. That is, the four water-blocking layers 2 wrap around the perimeter of the photovoltaic body 1. Therefore, the water-blocking layers 2 can effectively prevent external moisture (such as rainwater and humid air) from seeping into the interior through the gaps at the edges of the photovoltaic body 1, thereby ensuring the performance of the photovoltaic body 1 and extending its service life. Furthermore, the process of wrapping the water-blocking layer 2 is simple, reducing the assembly difficulty of the photovoltaic body 1. Moreover, the wrapping of the water-blocking layer 2 can be varied according to changes in the shape and size of the photovoltaic body 1, improving its versatility. For example, when the photovoltaic body 1 is rectangular, four waterproof components 3 are provided at the four corners 14 of the photovoltaic body 1, covering the areas of the water-blocking layer 2 located at the corners 14. Furthermore, the four waterproof components 3 can cover the joint 4. That is, the four waterproof components 3 cover both the corners 14 and the joint 4, or the four waterproof components 3 extend along the thickness direction of the photovoltaic body 1 to the first surface 11 and the second surface 12 of the photovoltaic body 1.

[0044] The presence of the joint 4 creates a height difference at the four corners 14 of the water-blocking layer 2, resulting in a water vapor penetration channel. By installing a waterproof component 3 at each corner 14 of the photovoltaic body 1, and enclosing the joint 4 within it, the waterproof component 3 effectively blocks the water vapor penetration channel at the joint 4 of the water-blocking layer 2, improving the electrical safety of the photovoltaic body 1 and extending its service life. Furthermore, it reduces the blackening of the four corners of the cell layer 15 due to damp heat aging during electroluminescence (EL) of the photovoltaic module 100. Less damp heat aging reduces the degradation, improving the performance of the photovoltaic module 100 and reducing the possibility of edge cracking of the cell layer 15 during use, thus extending its service life. In addition, the waterproof component 3 has a simple structure, reducing production costs and improving production efficiency.

[0045] According to the photovoltaic module 100 of this utility model, by setting multiple waterproof components 3, the water vapor penetration channels at the joint 4 are effectively blocked, improving the internal electrical safety of the photovoltaic body 1 and extending its service life. Furthermore, it can also reduce the moisture damage at the four corners of the cell layer 15 during electroluminescence (EL) of the photovoltaic module 100, thus extending the service life of the cell layer 15. In addition, the waterproof components 3 have a simple structure, reducing production and installation difficulty and improving production efficiency.

[0046] According to some embodiments of this utility model, refer to Figures 1-3 Each waterproof component 3 includes a first waterproof part 31 and two second waterproof parts 32.

[0047] Specifically, the first waterproof portion 31 covers the corner 14 and the ends 25 of the two adjacent water-blocking layers 2 forming the corner 14. Two second waterproof portions 32 are located on the first surface 11 and the second surface 12, respectively, and are respectively adjacent to the first waterproof portion 31 along the aforementioned thickness direction (i.e.,...). Figure 3 The second waterproof part 32 is connected to the two sides (in the direction indicated by the middle arrow E), and the second waterproof part 32 is in a direction parallel to the first surface 11 or the second surface 12 (i.e., the plane where the second waterproof part 32 is located is parallel to the first surface 11 or the second surface 12). Figure 1 The cross-sectional shape on the plane containing arrows B and C is triangular or L-shaped.

[0048] For example, in Figure 1 and Figure 2 In the example, the waterproof component 3 includes a first waterproof portion 31 extending along the thickness direction of the photovoltaic body 1, and the first waterproof portion 31 covers the edges of two adjacent water-blocking layers 2 located at the corner 14. Furthermore, second waterproof portions 32 located on the first surface 11 and the second surface 12 (i.e., the light-facing and backlight-facing surfaces of the photovoltaic body 1) are respectively connected to the first waterproof portion 31. That is, the longitudinal cross-sectional shape of the waterproof component 3 is U-shaped. Thus, the first waterproof portion 31 and the two second waterproof portions 32 completely enclose the joint portion 4 of the water-blocking layer 2 located at the corner 14 of the photovoltaic body 1, effectively blocking the water vapor penetration channel at the joint portion 4 caused by the height difference, reducing the possibility of water vapor penetrating from the corner 14 into the interior of the photovoltaic body 1, ensuring the performance of the photovoltaic body 1, and extending the service life of the photovoltaic module 100. Moreover, the first waterproof portion 31 and the second waterproof portion 32 can be modified in shape and size according to actual conditions, thereby broadening the application range of the waterproof component 3 and improving its versatility.

[0049] exist Figure 1 In the example, the cross-sectional shape of the second waterproof part 32 is triangular. Figure 2In the example, the cross-sectional shape of the second waterproof part 32 is L-shaped. Therefore, when the cross-sectional shape of the second waterproof part 32 is triangular, the shape of the second waterproof part 32 is highly compatible with the corner 14 of the rectangular photovoltaic body 1, thereby effectively blocking the water vapor penetration channel caused by the height difference at the joint 4, reducing water vapor penetration, improving the electrical safety of the cell layer 15, and extending the service life of the photovoltaic module 100. When the cross-sectional shape of the second waterproof part 32 is L-shaped, the shape of the second waterproof part 32 is the same as that of the water-blocking layer 2 located on the surface of the photovoltaic body 1, which is beneficial for the second waterproof part 32 to completely cover the water-blocking layer 2 located between the second waterproof part 32 and the photovoltaic body 1, thus ensuring the waterproof effect of the waterproof component 3. Moreover, it can reduce the amount of material used in the production of the second waterproof part 32, reducing the production cost of the waterproof component 3. Furthermore, the second waterproof part 32 has a simple structure, is easy to process and form, reduces the difficulty of production and installation, and improves production efficiency.

[0050] According to some embodiments of this utility model, refer to Figure 7 Each water-blocking layer 2 includes a first water-blocking surface 26 and two second water-blocking surfaces 27. Specifically, the first water-blocking surface 26 covers the side surface 13. The two second water-blocking surfaces 27 are located on the first surface 11 and the second surface 12, respectively, and are respectively perpendicular to the first water-blocking surface 26 along the thickness direction (i.e., Figure 3 The two sides of the second water-blocking surface 27 (in the direction indicated by the middle arrow E) are connected. The part of the second water-blocking surface 27 that forms the joint 4 is located between the second waterproof part 32 and the photovoltaic body 1. In the direction perpendicular to the extension direction of the side 13 and parallel to the first surface 11, the size of the second water-blocking surface 27 is smaller than the size of the second waterproof part 32.

[0051] For example, refer to Figure 7 Each water-blocking layer 2 includes a first water-blocking surface 26 parallel to the side 13 and two second water-blocking surfaces 27 located at the edges of the first surface 11 and the second surface 12. Specifically, the first water-blocking surface 26 completely covers the side 13, and the two second water-blocking surfaces 27 are connected to the upper and lower ends of the first water-blocking surface 26 along the thickness direction of the photovoltaic body 1 on the side 13, thereby forming a complete water-blocking layer 2. That is, each water-blocking layer 2 is U-shaped, wrapping the side 13 of the photovoltaic body 1 inside and extending to the first surface 11 and the second surface 12. In addition, the two adjacent water-blocking layers 2 form a joint 4 on the first surface 11 or the second surface 12, and the aforementioned joint 4 is located between the second waterproof part 32 and the photovoltaic body 1. Moreover, the width of the second water-blocking surface 27 (e.g., Figure 7 The width of the second water-blocking surface 27 extending along the direction of arrow C (in the direction of arrow B) is smaller than the width of the second waterproof part 32.

[0052] Therefore, each water-blocking layer 2 has a U-shaped longitudinal section, which allows it to enclose the four sides 13 of the photovoltaic body 1, effectively preventing moisture from penetrating into the interior along the sides 13, ensuring the performance of the cell layer 15, and extending the service life of the photovoltaic module 100. Furthermore, the width of each second waterproof portion 32 is greater than the width of the corresponding water-blocking layer 2 extending to the first surface 11 or the second surface 12, allowing the waterproof component 3 to completely cover the joint 4, effectively blocking the moisture penetration channel caused by the height difference at the joint 4, reducing moisture penetration, improving the electrical safety of the cell layer 15, and extending the service life of the photovoltaic module 100.

[0053] According to some embodiments of this utility model, refer to Figure 7 In the direction perpendicular to the extension of the side 13 and parallel to the first surface 11, the size of the second water-blocking surface 27 is W, where W satisfies: 1mm≤W≤10mm.

[0054] When the size W of the second water-blocking surface 27 is greater than 10 mm, the size of the second water-blocking surface 27 is too large, which will increase the shading area of ​​the second water-blocking surface 27 on the photovoltaic body 1, thereby reducing the photoelectric conversion efficiency of the photovoltaic module 100. In addition, it will also increase the production cost and installation difficulty of the water-blocking layer 2 and the waterproof component 3, reducing production and installation efficiency. When the size W of the second water-blocking surface 27 is less than 1 mm, the size of the second water-blocking surface 27 is too small, and the coverage area of ​​the second water-blocking surface 27 at the edges of the first surface 11 and the second surface 12 is too small, making it difficult to effectively prevent water vapor from seeping into the interior of the photovoltaic body 1 along the edges, thereby reducing the photoelectric conversion efficiency of the photovoltaic module 100 and shortening the service life of the photovoltaic module 100.

[0055] Therefore, when the size W of the second water-blocking surface 27 satisfies: 1mm≤W≤10mm, the size of the second water-blocking surface 27 is reasonably set, so that the water-blocking layer 2 can effectively block water vapor from penetrating into the interior along the side 13 of the photovoltaic body 1 in the thickness direction, reduce the possibility of water vapor penetrating into the cell layer 15, ensure the performance of the photovoltaic body 1, and extend its service life.

[0056] According to some embodiments of this utility model, combined with Figure 7 The sum of the widths of the first water-blocking surface 26 and the two second water-blocking surfaces 27 is W1, where W1 satisfies: 8mm ≤ W1 ≤ 30mm. That is to say, the overall width of the water-blocking layer 2 is W1.

[0057] When the total width W1 of the first water-blocking surface 26 and the two second water-blocking surfaces 27 is greater than 30 mm, and the thickness of the photovoltaic module 1 is constant, the width of the two second water-blocking surfaces 27 located at the edges of the first surface 11 and the second surface 12 is too large. This results in a larger shading area of ​​the water-blocking layer 2 on the first surface 11 and the second surface 12, which will increase the shading area of ​​the water-blocking layer 2 on the light-facing surface of the photovoltaic module 1, thereby reducing the photoelectric conversion efficiency of the photovoltaic module 100. Furthermore, when the water-blocking layer 2 is bonded to the photovoltaic module 1, an excessively large width can easily lead to adhesion overlap, increasing the number of water vapor permeation channels and the possibility of water vapor penetrating into the interior of the photovoltaic module 1. When the total width W1 of the first water-blocking surface 26 and the two second water-blocking surfaces 27 is less than 8 mm, the width of the two second water-blocking surfaces 27 located at the edges of the first surface 11 and the second surface 12 is too small. This limits the water-blocking effect of the water-blocking layer 2 on water vapor, reducing its effectiveness.

[0058] Therefore, when the total width W1 of the first water-blocking surface 26 and the two second water-blocking surfaces 27 satisfies 8mm≤W1≤30mm, the total width of the first water-blocking surface 26 and the two second water-blocking surfaces 27 is reasonably set. The water-blocking layer 2 can effectively prevent water vapor from penetrating into the interior along the side 13 of the photovoltaic body 1 in the thickness direction, and can effectively prevent water vapor from penetrating to the cell layer 15, ensuring the performance of the photovoltaic body 1 and extending its service life. In addition, it can also reduce the production cost and installation difficulty of the water-blocking layer 2 and improve the production efficiency of the photovoltaic module 100. It should be noted that the overall width of the water-blocking layer 2 can be set according to the actual situation, such as the thickness of the photovoltaic body 1.

[0059] According to some embodiments of this utility model, refer to Figure 1 The second waterproof portion 32 has a right-angled triangle cross-section. The two right-angled sides 323 of the second waterproof portion 32 are parallel to the two adjacent side faces 13, respectively. The hypotenuse 322 of the second waterproof portion 32 connects the two adjacent side faces 13. The length of at least one right-angled side 323 of the second waterproof portion 32 is L1, where L1 satisfies: 5mm ≤ L1 ≤ 40mm. That is, one right-angled side 323 of the second waterproof portion 32 satisfies the L1 dimension, or both right-angled sides 323 of the second waterproof portion 32 satisfy the aforementioned L1 dimension.

[0060] For example, refer to Figure 1The cross-sectional shape of the second waterproof part 32 is a right-angled triangle. That is, the two right-angled sides 323 of the cross-section of the second waterproof part 32 coincide with the sides of two adjacent side surfaces 13 of the first surface 11 or the second surface 12 of the photovoltaic body 1, and the hypotenuse 322 of the second waterproof part 32 connects the two adjacent side surfaces 13. Therefore, the cross-sectional shape of the second waterproof part 32 is a right-angled triangle, which matches the shape of the corner 14 of the photovoltaic body 1. This allows the waterproof component 3 to enclose the corner 14 of the water-blocking layer 2 internally, while maintaining a smaller area and saving material usage for the second waterproof part 32. Furthermore, it improves the sealing performance at the corner 14 of the photovoltaic body 1, reducing the possibility of moisture penetrating from the corner 14 of the photovoltaic body 1 to the cell layer 15, and extending the service life of the cell layer 15. Furthermore, the hypotenuse 322 of the second waterproof part 32 connects between two adjacent side surfaces 13, completely enclosing the water vapor infiltration channel at the joint 4 within the second waterproof part 32. This effectively blocks the water vapor infiltration channel, reduces water vapor infiltration, and ensures the performance of the photovoltaic body 1. For example, the cross-sectional shape of the second waterproof part 32 can be an isosceles right triangle or a non-isosceles right triangle, which can be set according to the actual situation.

[0061] When the length L1 of at least one right-angled side 323 of the second waterproof part 32 is greater than 40 mm, the length of at least one right-angled side 323 of the second waterproof part 32 is too long, resulting in a large redundancy in the second waterproof part 32. Furthermore, this increases the production cost of the second waterproof part 32. When the length L1 of at least one right-angled side 323 of the second waterproof part 32 is less than 5 mm, the length of at least one right-angled side 323 of the second waterproof part 32 is too short, making it difficult for the second waterproof part 32 to completely cover the water-blocking layer 2 at the corner 14 of the photovoltaic body 1, thereby affecting the water-blocking effect of the waterproof component 3.

[0062] Therefore, when the length L1 of at least one right-angled side 323 of the second waterproof part 32 satisfies: 5mm≤L1≤40mm, the length of at least one right-angled side 323 of the second waterproof part 32 is reasonably set, and the second waterproof part 32 can effectively block the water vapor penetration channel at the corner 14 of the photovoltaic body 1, prevent water vapor from penetrating into the interior of the photovoltaic body 1, ensure the performance of the photovoltaic module 100, and extend its service life.

[0063] According to some embodiments of this utility model, refer to Figure 2 When the cross-sectional shape of the second waterproof part 32 is L-shaped, the two sides 321 of the second waterproof part 32 extend along the two adjacent sides 13 respectively. The length of the side 321 is L2 and the width is D1. L2 and D1 satisfy: 10mm≤L2≤200mm and 2mm≤D1≤15mm respectively.

[0064] For example, in Figure 2In the example, the cross-section of the second waterproof portion 32 is L-shaped. That is, the second waterproof portion 32 includes two side edges 321 that are angled and connected, and the two side edges 321 are respectively along two adjacent side edges 13 of the photovoltaic body 1 (i.e., one side edge 321 extends along the length direction of the photovoltaic body 1, that is...). Figure 2 The direction indicated by the middle arrow C. The other side 321 extends along the width direction of the photovoltaic body 1, that is... Figure 2 The direction pointed to by the middle arrow B. (Extends.)

[0065] Therefore, when the cross-sectional shape of the second waterproof part 32 is L-shaped, the shape of the second waterproof part 32 is the same as that of the water-blocking layer 2 located on the surface of the photovoltaic body 1. This facilitates the complete coverage of the water-blocking layer 2 between the second waterproof part 32 and the photovoltaic body 1, ensuring the waterproof effect of the waterproof component 3. Furthermore, the second waterproof part 32 effectively extends the water-blocking path, enhances the waterproof performance of the corners 14 of the photovoltaic body 1, reduces the risk of moisture penetrating from the four corners of the photovoltaic body 1 into the cell layer 15, and extends the service life of the photovoltaic body 1. In addition, the second waterproof part 32 has a simple structure, facilitating assembly with the photovoltaic body 1, which helps reduce the production difficulty of the photovoltaic module 100 and improves production efficiency. Moreover, it can reduce the amount of materials used in the production of the second waterproof part 32, thus reducing the production cost of the waterproof component 3.

[0066] When the length L2 of the side 321 of the second waterproof part 32 is greater than 200mm, the length of the side 321 of the second waterproof part 32 is too large, which will increase the production cost of the second waterproof part 32. When the length L2 of the side 321 of the second waterproof part 32 is less than 100mm, the length of the side 321 of the second waterproof part 32 is too small, and the side 321 of the second waterproof part 32 cannot completely cover the joint 4, thus affecting the water-blocking effect of the waterproof component 3. Therefore, when the length L2 of the side 321 of the second waterproof part 32 satisfies: 10mm≤L2≤200mm, the length range of the side 321 of the second waterproof part 32 is reasonably set, which can effectively block the water vapor penetration channel at the corner 14 of the photovoltaic body 1, prevent water vapor from penetrating into the interior of the photovoltaic body 1, ensure the performance of the photovoltaic module 100, and extend its service life.

[0067] When the width D1 of the side 321 of the second waterproof part 32 is greater than 15mm, the width of the side 321 of the second waterproof part 32 is too large. An excessively wide side 321 is more prone to aging and warping, thereby reducing the water-blocking effect of the second waterproof part 32 and shortening its service life. In addition, it will also increase the production cost of the second waterproof part 32. When the width D1 of the side 321 of the second waterproof part 32 is less than 2mm, the width of the side 321 of the second waterproof part 32 is too small, making it difficult to completely cover the corner 14 of the water-blocking layer 2, thereby reducing the water-blocking effect of the second waterproof part 32. Water vapor penetration at the corner 14 is likely to occur, thereby affecting the electrical safety of the photovoltaic body 1 and the performance of the photovoltaic module 100.

[0068] Therefore, when the width D1 of the side 321 of the second waterproof part 32 satisfies: 2mm≤D1≤15mm, the width of the side 321 of the second waterproof part 32 is reasonably set, which can ensure the waterproof effect of the second waterproof part 32 while reducing the production cost of the second waterproof part 32, thereby reducing the production cost of the photovoltaic module 100.

[0069] It should be noted that the length and width of the two sides 321 of the second waterproof part 32 can be set according to the actual situation, and no specific limitation is made here.

[0070] According to some embodiments of this utility model, refer to Figure 8 The thickness of waterproof component 3 is H1, where H1 satisfies: 0.1mm ≤ H1 ≤ 3mm. For example, refer to... Figure 1 The thickness of waterproof component 3 refers to the thickness of waterproof component 3 being higher than the upper surface of photovoltaic body 1 (i.e., perpendicular to the surface). Figure 1 The dimension along the direction of the middle arrow (B or C).

[0071] When the thickness H1 of the waterproof component 3 is greater than 3mm, the excessive thickness will affect the flexibility of the waterproof component 3, increasing the likelihood of cracking or damage when subjected to external forces, thus affecting its water-blocking performance. Furthermore, it will increase the production cost of the waterproof component 3, increase the overall weight of the photovoltaic module 1, and increase the difficulty of transportation and installation. When the thickness H1 of the waterproof component 3 is less than 3mm, the thinner thickness will affect its moisture-blocking ability, making it difficult to meet the water-blocking and sealing requirements of the photovoltaic module 1.

[0072] Therefore, when the thickness H1 of the waterproof component 3 satisfies the condition 0.1mm≤H1≤3mm, the thickness of the waterproof component 3 is reasonably set. The waterproof component 3 can further block the water vapor penetration channel at the joint 4, improving the waterproof performance of the corner 14 of the photovoltaic module 100. When the waterproof component 3 is used in the photovoltaic module 100, it can effectively reduce the possibility of water vapor penetrating into the interior of the photovoltaic body 1, thereby reducing the possibility of failure of the photovoltaic module 100 under high temperature and high humidity conditions, ensuring the performance of the photovoltaic module 100, and expanding the application scenarios of the photovoltaic module 100. Moreover, the use of the waterproof component 3 can balance cost and reliability, improving water-blocking performance and ensuring performance without significantly increasing the production cost of the photovoltaic module 100. It should be noted that the thickness of the waterproof component 3 needs to be determined based on factors such as the usage environment of the photovoltaic body 1, waterproof requirements, and overall design.

[0073] According to some embodiments of this utility model, the waterproof component 3 is a hot melt adhesive component.

[0074] Hot melt adhesive melts rapidly under heating, wetting the corners 14 of the photovoltaic module 1. After cooling, it forms a strong bond, effectively sealing the corners 14 of the photovoltaic module 1 and preventing moisture intrusion. Furthermore, hot melt adhesive has good wettability on various material surfaces, thus broadening the application scenarios of the waterproof component 3. In addition, hot melt adhesive can be processed into various shapes and has a fast cooling and curing speed, which helps improve production efficiency and reduce production difficulty. For example, the hot melt adhesive can be melted by heating methods such as hot air or infrared, and external force can be applied to bond the hot melt adhesive to the first and second cover plates, thus forming a stable bond. Therefore, the molding and assembly of the waterproof component 3 with the photovoltaic module 1 are simple, which helps reduce the production and installation difficulty of the photovoltaic module 1 and improves production efficiency. Moreover, the production cost of hot melt adhesive components is low, which helps reduce the production cost of the photovoltaic module 100, thus forming a low-cost, high-water-resistance waterproof component 3.

[0075] Furthermore, after the waterproof component 3 is formed on the photovoltaic body 1, the photovoltaic module 100 is manufactured according to the conventional production process, such as framing, junction box installation, cleaning, EL / IV testing, and packaging, thus forming a complete photovoltaic module 100. Therefore, adding the waterproof component 3 will not affect the subsequent production and installation of the photovoltaic module 100, and improves the water-blocking performance of the photovoltaic module 100, extending its service life. Moreover, this application only requires adding a tape laminating machine to the existing photovoltaic module 100 production line, simplifying the process and achieving good water-blocking performance.

[0076] According to some embodiments of the present invention, the hot melt adhesive parts include butyl rubber parts, polyolefin parts, polyamide parts, polyurethane parts, or polyester parts.

[0077] This configuration allows butyl rubber components, polyolefin components, polyamide components, polyurethane components, or polyester components to exhibit excellent adhesion properties, forming strong bond structures with various materials such as glass and alloys, thus improving the versatility of the waterproof component 3. Furthermore, it provides excellent airtightness and watertightness; when these materials are used in the waterproof component 3, they effectively prevent water vapor from penetrating it, thereby enhancing the electrical safety of the photovoltaic body 1 and increasing the photoelectric conversion efficiency of the photovoltaic module 100. Moreover, it offers good insulation, meeting the electrical insulation requirements of the photovoltaic body 1. Additionally, the aforementioned materials have low production costs and good processing performance, which helps reduce the production cost of the waterproof component 3 and improve production efficiency.

[0078] According to some embodiments of this utility model, refer to Figures 4-6 The water-blocking layer 2 includes an adhesive layer 21, a barrier layer 22, and a support layer 23. Specifically, the barrier layer 22 is disposed on one side of the adhesive layer 21 in the thickness direction. The support layer 23 is disposed between the adhesive layer 21 and the barrier layer 22, or the support layer 23 is disposed on the side of the barrier layer 22 away from the adhesive layer 21.

[0079] For example, the adhesive layer 21 can be a pressure-sensitive adhesive. Pressure-sensitive adhesive is tacky at room temperature and can quickly bond to the substrate (such as glass, backsheet, or film) without heating or solvents, forming an initial sealing layer that effectively blocks moisture and prevents liquid penetration, thereby extending the lifespan of the photovoltaic body 1. Furthermore, the pressure-sensitive adhesive can elastically deform with the thermal expansion and contraction of the photovoltaic body 1, thus preventing cracking or peeling of the water-blocking layer 2 due to mechanical stress (such as module thermal cycling), ensuring the long-term water-blocking reliability of the water-blocking layer 2. The barrier layer 22 can be an aluminum foil. Aluminum foil is a high-barrier material, impermeable to air and water, thus forming a rigid water-blocking layer 2 on the outer periphery of the photovoltaic body 1, directly blocking the path of moisture (especially liquid water penetration). Moreover, the aluminum foil has a certain degree of hardness and puncture resistance, protecting the internal structure of the photovoltaic body 1 (such as the edges of the cell layer 15) from damage by sharp objects (such as scratches during installation), reducing the possibility of edge cracking of the cell layer 15, and enhancing the overall mechanical strength of the water-blocking layer 2. With this configuration, the adhesive layer 21, the barrier layer 22, and the support layer 23 form a "sandwich" structure for the water-blocking layer 2, achieving the triple function of "adhesive sealing + physical barrier + structural support," thereby effectively improving the water resistance and moisture resistance of the photovoltaic module 100 and extending its service life.

[0080] Additionally, refer to Figure 4 and Figure 5 The positions of the support layer 23 and the barrier layer 22 can be interchanged. For example, the structure of the water-blocking layer 2 can be barrier layer 22-support layer 23-adhesive layer 21 (e.g., ...). Figure 4 (as shown in the figure), or support layer 23-barrier layer 22-adhesive layer 21 ...). Figure 5 As shown in the figure, the relative positional relationship between the support layer 23 and the barrier layer 22 can be set according to the actual situation.

[0081] According to some embodiments of this utility model, refer to Figure 6 There are multiple support layers 23, which are respectively disposed on both sides of the barrier layer 22 in the thickness direction. In the description of this utility model, "multiple" means two or more.

[0082] For example, refer to Figure 6 The support layer 23 can be configured as two (i.e., a double support layer 23 structure), located respectively in the thickness direction of the barrier layer 22 (i.e., Figure 6 The water-blocking layer 2 is positioned on both sides (in the direction indicated by the middle arrow G), forming a "multi-layered structure." The outermost support layer 23 provides mechanical protection for the other structural layers inside the water-blocking layer 2, thereby improving the tear resistance and aging resistance of the protective layer. The support layer 23 located below the barrier layer 22 optimizes the function of the water-blocking layer 2, such as improving interlayer adhesion and assisting in heat dissipation. With this configuration, the double support layer 23 structure effectively improves the tear resistance and aging performance of the water-blocking layer 2. This allows the photovoltaic module 100 to be used in large photovoltaic modules 100 or in extreme environments, broadening the application scenarios of the photovoltaic module 100. In addition, it can also improve the sealing performance of the water-blocking layer 2 to the photovoltaic body 1, reduce the possibility of water vapor penetrating into the cell layer 15 along the edge of the photovoltaic body 1, ensure performance, and extend service life.

[0083] In addition, combined Figures 4-6 The water-blocking layer 2 also includes a release film 24, which is located on the side of the adhesive layer 21 away from the barrier layer 22. Therefore, the release film 24 effectively prevents the water-blocking layer 2 from sticking together during winding. It needs to be removed when the water-blocking layer 2 is bonded to the photovoltaic body 1. It should be noted that the release film 24 needs to be set according to the actual situation; in certain cases, the release film 24 may not be required.

[0084] According to some embodiments of the present invention, the thickness of the adhesive layer 21 is H2, wherein H2 satisfies: 10μm≤H2≤80μm; and / or, the thickness of the barrier layer 22 is H3, wherein H3 satisfies: 5μm≤H3≤30μm; and / or, the thickness of the support layer 23 is H4, wherein H4 satisfies: 10μm≤H4≤50μm.

[0085] When the thickness H2 of the adhesive layer 21 is greater than 80 μm, the excessive thickness of the adhesive layer 21 can easily cause delamination and peeling at the edge interface of the water-blocking layer 2, thereby reducing the water-blocking effect of the water-blocking layer 2. Furthermore, it will also affect the heat dissipation effect at the edge of the photovoltaic body 1, accelerate the aging of the water-blocking layer 2, and shorten its service life. In addition, it will increase the production cost and difficulty of the water-blocking layer 2. When the thickness H2 of the adhesive layer 21 is less than 10 μm, the thickness of the adhesive layer 21 is too small, the indirect effect of the adhesive layer is ineffective, and the water-blocking layer 2 is prone to delamination during use, thereby reducing the water-blocking effect and shortening its service life. Therefore, when the thickness H2 of the adhesive layer 21 satisfies: 10 μm ≤ H2 ≤ 80 μm, the thickness of the adhesive layer 21 is reasonably set, which can reduce the production cost of the water-blocking layer 2 and improve production quality while ensuring the bonding effect. Furthermore, it can also form a uniform water-blocking layer 2 at the edge of the photovoltaic body 1, improving the water-blocking effect and extending the service life of the photovoltaic body 1.

[0086] When the thickness H3 of the barrier layer 22 is greater than 30 μm, the thickness of the barrier layer 22 is too large. Excessive thickness increases the rigidity of the barrier layer 22, making it difficult to bond tightly with the adhesive layer 21 and the support layer 23. This can easily lead to air bubbles or wrinkles, affecting the water-blocking performance of the water-blocking layer 2 and increasing water vapor permeability. Furthermore, it may lengthen the heat conduction path of the water-blocking layer 2, accelerating its aging and shortening its lifespan. When the thickness H3 of the barrier layer 22 is less than 5 μm, the thickness is too small, and its water vapor blocking effect is limited. Therefore, when the thickness H3 of the barrier layer 22 satisfies the condition 5 μm ≤ H3 ≤ 30 μm, the thickness of the barrier layer 22 is reasonably set, allowing it to fully exert its blocking effect, thereby preventing water vapor from penetrating into the photovoltaic body 1 and extending its lifespan.

[0087] When the thickness H4 of the support layer 23 is greater than 50 μm, the excessive thickness of the support layer 23 will increase the overall thickness of the water-blocking layer 2. However, since the support layer 23 has no water-blocking effect, it will not improve the water-blocking effect of the water-blocking layer 2. In addition, the excessive thickness of the support layer 23 will also affect the bonding effect between the adhesive layer 21, the barrier layer 22, and the support layer 23, thereby reducing the water-blocking effect of the water-blocking layer 2. When the thickness H4 of the support layer 23 is less than 10 μm, the thickness of the support layer 23 is too small, and the supporting strength is low. When the water-blocking layer 2 is bonded to the photovoltaic body 1, it is prone to wrinkles or breakage due to excessive softness, thereby reducing the water-blocking effect of the water-blocking layer 2. Therefore, when the thickness H4 of the support layer 23 satisfies: 10 μm ≤ H4 ≤ 50 μm, the thickness of the support layer 23 is reasonably set, which can provide sufficient support for the water-blocking layer 2, thereby ensuring the water-blocking effect of the water-blocking layer 2 while extending its service life.

[0088] According to some embodiments of the present invention, the photovoltaic body 1 includes a first cover plate, a first adhesive film, a battery cell layer 15, a second adhesive film, and a second cover plate (not shown in the figure) stacked sequentially, wherein the first adhesive film and / or the second adhesive film are EVA adhesive films.

[0089] For example, the photovoltaic module 1 includes a first cover plate, a first encapsulating film, a cell layer 15, a second encapsulating film, and a second cover plate stacked sequentially, thus forming a laminated photovoltaic module 1 structure. In other words, the photovoltaic module 1 uses a lamination process to tightly bond the cell layer 15, the encapsulating film layer, the cover plate layer, and other materials into a single unit. Therefore, the photovoltaic module 1 forms a robust "sandwich" structure through lamination, thereby improving its load-bearing capacity. When the photovoltaic module 100 is used in an outdoor environment, it effectively reduces damage caused by external mechanical stress, thus extending the service life of the photovoltaic module 100. Furthermore, the laminated cell layer 15 is fixed by the encapsulating film layers on both sides of the cell layer 15, effectively reducing cell displacement and mutual friction caused by vibration or thermal expansion and contraction during use, reducing the risk of cell layer 15 breakage, and extending the service life of the photovoltaic module 1. Furthermore, during the lamination process, the melted adhesive film fills the gap between the cover plate and the cell layer 15, eliminating air gaps, reducing cross-sectional reflections, and allowing more light to pass through the cover plate and reach the cell layer 15, thus improving the power generation efficiency of the photovoltaic module 100. Additionally, the laminate has uniform dimensions, interfaces, and mounting holes, effectively reducing installation difficulty and improving installation efficiency. Moreover, the smooth surface of the laminate facilitates close-packed installation, saving installation space and broadening the application scenarios of the photovoltaic module 100.

[0090] Furthermore, the first and second cover plates are located on the upper and lower sides along the thickness direction of the photovoltaic cell. The first cover plate, located on the light-facing side of the cell layer 15, can be a light-transmitting plate, such as a glass plate. The second cover plate, located on the back-lighting side of the cell layer 15, can be a light-transmitting or opaque plate, such as a glass plate or a metal plate. Thus, the first and second cover plates, located on the outermost sides of the photovoltaic module 1, provide support and protection, reducing the likelihood of breakage due to external forces, thereby ensuring the performance of the photovoltaic module 1 and extending its lifespan. In addition, when the first cover plate is made of glass, it increases light transmittance and reduces light loss, thereby improving the photoelectric conversion efficiency of the photovoltaic module 100. When the second cover plate is also made of glass, it can absorb reflected light from the ground, thereby improving the power generation efficiency of the photovoltaic module 100. Furthermore, the first and second cover plates are typically made of insulating materials, ensuring the safety and reliability of the photovoltaic power generation system.

[0091] Furthermore, the first and second encapsulating films serve to bond adjacent layers and also provide waterproofing. Both films are EVA (ethylene-vinyl acetate copolymer) films. This configuration results in lower EVA film usage costs. In this application, through the combined action of the EVA film, water-blocking layer 2, and waterproof component 3, the photovoltaic module 100 can achieve good waterproofing without using other, more expensive types of encapsulating films, while maintaining low production costs. The EVA film has high light transmittance, reducing light reflection and absorption by the first and second encapsulating films, thus ensuring the power generation efficiency of the photovoltaic module 100. Moreover, the EVA film exhibits good adhesion to various materials and excellent aging resistance, thereby improving the internal structural stability of the photovoltaic module 100 and extending its service life. In addition, the EVA film is soft, and the first and second films are located on the upper and lower sides of the thickness direction of the battery cell layer 15, respectively, forming a "sandwich" encapsulation, which can buffer external impacts (such as wind, sand, hail, etc.), protect the battery cell layer 15 from damage, and extend the service life of the battery cell layer 15.

[0092] For example, after laminating the photovoltaic body 1, the excess adhesive film around the perimeter is removed. Then, the water-blocking layer 2 is bonded to the four peripheral surfaces of the photovoltaic body 1 along its thickness direction, extending to the first surface 11 and the second surface 12 (i.e., the light-facing and backlight-facing surfaces of the photovoltaic body 1) to achieve a water-blocking effect on the peripheral surfaces of the photovoltaic body 1. Due to the height difference at the joint 4, water vapor penetration channels can easily form. To solve the above problem, waterproof components 3 are added at the four corners 14 to cover the portion of the water-blocking layer 2 located at the corners 14 of the photovoltaic body 1, thereby obtaining a photovoltaic module 100 with low cost, good water-blocking effect, low degradation after damp heat aging, and less blackening at the four corners of the EL.

[0093] The photovoltaic module 100 and its operation according to the embodiments of this utility model are known to those skilled in the art and will not be described in detail here.

[0094] 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.

[0095] 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.

[0096] 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: A photovoltaic body includes a first surface and a second surface that are relatively distributed in the thickness direction, and a plurality of side surfaces located between the first surface and the second surface, wherein the plurality of side surfaces intersect in sequence to form a plurality of corners; Multiple water-blocking layers sequentially cover the multiple sides, and adjacent water-blocking layers form a joint at the corner; Multiple waterproof components are respectively disposed at the multiple corners of the photovoltaic body and cover the joint portion.

2. The photovoltaic module according to claim 1, characterized in that, Each of the aforementioned waterproof components includes: The first waterproof portion covers the corner and the ends of the two adjacent water-blocking layers forming the corner; Two second waterproof portions are located on the first surface and the second surface, respectively, and are connected to both sides of the first waterproof portion along the thickness direction. The cross-sectional shape of the second waterproof portion in the direction parallel to the first surface or the second surface is triangular or L-shaped.

3. The photovoltaic module according to claim 2, characterized in that, Each of the aforementioned water-blocking layers includes: The first water-blocking surface covers the side surface; Two second water-blocking surfaces are located on the first surface and the second surface, respectively, and are connected to both sides of the first water-blocking surface along the thickness direction. The portion of the second water-blocking surface that forms the joint is located between the second waterproof part and the photovoltaic body. In the direction perpendicular to the side and parallel to the first surface, the size of the second water-blocking surface is smaller than the size of the second waterproof part.

4. The photovoltaic module according to claim 3, characterized in that, In the direction perpendicular to the side and parallel to the first surface, the dimension of the second water-blocking surface is W, wherein W satisfies: 1mm≤W≤10mm.

5. The photovoltaic module according to claim 2, characterized in that, The cross-sectional shape of the second waterproof part is a right triangle. The two right-angled sides of the second waterproof part are parallel to the two adjacent side surfaces, and the hypotenuse of the second waterproof part is connected between the two adjacent side surfaces. The length of at least one right-angled side of the second waterproof part is L1, wherein L1 satisfies: 5mm≤L1≤40mm.

6. The photovoltaic module according to claim 2, characterized in that, When the cross-sectional shape of the second waterproof part is L-shaped, the two sides of the second waterproof part extend along the two adjacent sides respectively. The side has a length of L2 and a width of D1, wherein L2 and D1 satisfy the following conditions: 10mm≤L2≤200mm and 2mm≤D1≤15mm, respectively.

7. The photovoltaic module according to claim 1, characterized in that, The thickness of the waterproof component is H1, wherein H1 satisfies: 0.1mm≤H1≤3mm.

8. The photovoltaic module according to claim 1, characterized in that, The waterproof component is a hot melt adhesive component.

9. The photovoltaic module according to claim 8, characterized in that, The hot melt adhesive components include butyl rubber components, polyolefin components, polyamide components, polyurethane components, or polyester components.

10. The photovoltaic module according to claim 1, characterized in that, The water-blocking layer includes: Adhesive layer; A barrier layer, wherein the barrier layer is disposed on one side of the adhesive layer in the thickness direction; A support layer is disposed between the adhesive layer and the barrier layer, or the support layer is disposed on the side of the barrier layer away from the adhesive layer.

11. The photovoltaic module according to claim 10, characterized in that, The support layer comprises multiple layers, which are respectively disposed on both sides of the thickness direction of the barrier layer.

12. The photovoltaic module according to claim 10, characterized in that, The thickness of the adhesive layer is H2, wherein H2 satisfies: 10μm ≤ H2 ≤ 80μm; and / or The thickness of the barrier layer is H3, wherein H3 satisfies: 5μm ≤ H3 ≤ 30μm; and / or The thickness of the support layer is H4, wherein H4 satisfies: 10μm≤H4≤50μm.

13. The photovoltaic module according to any one of claims 1-12, characterized in that, The photovoltaic body includes a first cover plate, a first adhesive film, a battery cell layer, a second adhesive film, and a second cover plate stacked in sequence, wherein the first adhesive film and / or the second adhesive film are EVA adhesive films.

Images