Photovoltaic module and photovoltaic device

Abstract

The invention discloses a photovoltaic module and a photovoltaic device. The photovoltaic module comprises a curved-surface photovoltaic tile, a waterproof piece and a junction box, the curved-surface photovoltaic tile comprises a panel, a battery piece and a back plate which are sequentially stacked, and the panel comprises a light receiving surface deviating from the battery piece; the waterproof part is arranged on the light receiving surface and divides the light receiving surface into a first area and a second area, the battery piece corresponds to the first area, and the second area is used for being overlapped with other photovoltaic modules; the junction box is arranged in the second area and electrically connected with the battery piece, and the height of the junction box is lower than that of the waterproof piece. Thus, the junction box is arranged in the second area, the waterproof piece can prevent liquid from flowing to the second area, the risk of short circuit of the junction box is reduced, in addition, the junction box is located on the light receiving face of the panel, wiring of a plurality of photovoltaic tiles in the installation process is facilitated, and the assembly efficiency is improved; in addition, the junction box is lower than the waterproof piece, the junction box cannot interfere with the curved-surface photovoltaic tile, and a plurality of photovoltaic modules can be assembled together conveniently.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic technology, and more specifically, to a photovoltaic module and a photovoltaic device. Background Technology

[0002] Photovoltaic (PV) tiles are devices that convert solar energy into light energy. During installation, multiple PV tiles typically need to be assembled together and electrically connected to form a device with a relatively high power output. Since PV tiles are generally used outdoors with electricity, the waterproofing performance of multiple PV tiles is particularly important. Therefore, reducing the short-circuit risk of PV tiles and improving the assembly efficiency of multiple PV tiles have become technical problems to be solved. Summary of the Invention

[0003] The present invention provides a photovoltaic module and a photovoltaic device.

[0004] The photovoltaic module of this application includes a curved photovoltaic tile, a waterproof component, and a junction box. The curved photovoltaic tile includes a panel, solar cells, and a backsheet stacked sequentially. The panel includes a light-receiving surface facing away from the solar cells. The waterproof component is disposed on the light-receiving surface and divides the light-receiving surface into a first region and a second region. The solar cells correspond to the first region, and the second region is used to overlap with other photovoltaic modules. The junction box is disposed in the second region and is electrically connected to the solar cells. The height of the junction box is lower than the height of the waterproof component.

[0005] In the photovoltaic module of this application embodiment, the junction box is located in the second area, and the waterproof component can prevent liquid from flowing into the second area, thereby reducing the risk of short circuits in the junction box. In addition, the junction box is located on the light-receiving surface of the panel, which facilitates wiring of multiple photovoltaic tiles during installation and improves assembly efficiency. Furthermore, the height of the junction box is lower than the height of the waterproof component, so that when two photovoltaic modules overlap through the second area, the junction box will not interfere with the curved photovoltaic tile, which facilitates the assembly of multiple photovoltaic modules together.

[0006] In some embodiments, the photovoltaic module includes a positive terminal and a negative terminal, both of which are connected to the junction box via wires.

[0007] In some implementations, the positive terminal and the negative terminal are located on opposite sides of the junction box.

[0008] In some implementations, the area of ​​the first region is larger than the area of ​​the second region.

[0009] In some embodiments, the waterproof component includes a strip body and a baffle plate. The strip body is disposed on the light-receiving surface, and the baffle plate extends from the edge of the body in a direction away from the light-receiving surface. The height of the baffle plate is greater than the height of the junction box, and the junction box abuts against the strip body.

[0010] In some embodiments, the number of solar cells is multiple, and the multiple solar cells are arranged along at least one direction. The panel includes an inner surface opposite to the light-receiving surface, the inner surface facing the solar cells. The curved photovoltaic tile includes a solder ribbon, the solder ribbon connecting two adjacent solar cells along a first direction. The solder ribbon is provided with a reflective surface, the reflective surface being used to reflect light perpendicular to the panel and incident on the solder ribbon to the inner surface of the panel, and then reflected by the inner surface to the solar cells.

[0011] In some embodiments, the welding strip includes a plurality of first welding segments and at least one second welding segment. The first welding segment is connected to a corresponding solar cell. The length of the first welding segment is greater than the length of the second welding segment. The second welding segment connects two adjacent first welding segments along the first direction. The second welding segment is located between two adjacent solar cells. The solar cell includes a first surface and a second surface facing away from each other. In two adjacent solar cells, the first surface of one solar cell is provided with the first welding segment, and the second surface of the other solar cell is provided with the first welding segment.

[0012] In some embodiments, the second weld segment is flat, with the surface of the second weld segment having the largest area facing the battery cell.

[0013] The photovoltaic device according to the embodiments of this application includes a plurality of photovoltaic modules as described above, and the plurality of curved photovoltaic tiles are electrically connected through a junction box.

[0014] Additional aspects and advantages of the 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

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0016] Figure 1 This is a three-dimensional schematic diagram of a photovoltaic module according to an embodiment of the present invention;

[0017] Figure 2 This is another perspective view of the photovoltaic module according to an embodiment of the present invention;

[0018] Figure 3This is a partial three-dimensional schematic diagram of a photovoltaic module according to an embodiment of the present invention;

[0019] Figure 4 This is a three-dimensional schematic diagram of a photovoltaic module according to some embodiments of the present invention;

[0020] Figure 5 This is a partial structural schematic diagram of the curved photovoltaic tile according to an embodiment of the present invention;

[0021] Figure 6 This is a partially exploded schematic diagram of the curved photovoltaic tile according to an embodiment of the present invention;

[0022] Figure 7 This is a side view of the welding strip of the curved photovoltaic tile according to an embodiment of the present invention;

[0023] Figure 8 This is a side view of the curved photovoltaic tile according to an embodiment of the present invention;

[0024] Figure 9 This is a partial schematic diagram of the solder strip according to an embodiment of the present invention;

[0025] Figure 10 This is a partial structural schematic diagram of the curved photovoltaic tile according to an embodiment of the present invention;

[0026] Figure 11 This is a side view of the curved photovoltaic tile according to an embodiment of the present invention;

[0027] Figure 12 This is a partial schematic diagram of a photovoltaic device according to an embodiment of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1000-Photovoltaic module; 100-Curved photovoltaic tile; 10-Panel; 11-Light-receiving surface; 111-First area; 112-Second area; 12-Inner surface; 20-Battery cell; 21-Layered area; 22-First surface; 23-Second surface; 30-Backsheet; 40-Spindle; 41-First welding section; 42-Second welding section; 43-Reflective surface; 44-Groove; 200-Waterproof component; 201-Long strip body; 202-Baffle; 300-Gathering box; 400-Positive terminal; 500-Negative terminal; 600-Wire; D1-First direction; D2-Second direction. Detailed Implementation

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "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. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] The following disclosure provides many different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and settings are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or settings discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0033] Please see Figures 1-4 The photovoltaic module 1000 of this application includes a curved photovoltaic tile 100, a waterproof component 200, and a junction box 300. The curved photovoltaic tile 100 includes a panel 10, a solar cell 20, and a back sheet 30 stacked in sequence. The panel 10 includes a light-receiving surface 11 facing away from the solar cell 20. The waterproof component 200 is disposed on the light-receiving surface 11 and divides the light-receiving surface 11 into a first region 111 and a second region 112. The solar cell 20 corresponds to the first region 111, and the second region 112 is used to overlap with other photovoltaic modules 1000. The junction box 300 is disposed in the second region 112 and is electrically connected to the solar cell 20. The height of the junction box 300 is lower than the height of the waterproof component 200.

[0034] In the photovoltaic module 1000 of this application embodiment, the junction box 300 is disposed in the second region 112. The waterproof component 200 can prevent liquid from flowing into the second region 112, thereby reducing the risk of short circuit in the junction box 300. In addition, the junction box 300 is located on the light-receiving surface 11 of the panel 10, which facilitates wiring of multiple photovoltaic tiles during installation and improves assembly efficiency. Furthermore, the height of the junction box 300 is lower than the height of the waterproof component 200, so that when two photovoltaic modules 1000 overlap through the second region 112, the junction box 300 will not interfere with the curved photovoltaic tile 100, which facilitates the assembly of multiple photovoltaic modules 1000 together.

[0035] Specifically, the curved photovoltaic tile 100 is a photovoltaic product with a curved outer surface. The curved photovoltaic tile 100 has a larger light-receiving area and is less prone to water accumulation, making it suitable for rooftops, outdoor flat ground, and other applications. The panel 10 can be made of a light-transmitting material, allowing light to pass through the panel 10 and reach the solar cells 20. The backsheet 30 can be made of metal or polymer material. Both the backsheet 30 and the panel 10 are curved panels, and they can have curved peaks and troughs.

[0036] The solar cell 20 converts light energy into electrical energy. The solar cell 20 can be manufactured using Perc (Passivated Emitter Rear Cell) technology, Topcon (Tunnel Oxide Passivated Contact) technology, or BC (back contact) technology. After pressing, the solar cell 20 can be curved. Multiple solar cells 20 can be arranged in a flat layout. The number of solar cells 20 can be set according to specific needs, such as 2, 3, 10, or 50.

[0037] The waterproof component 200 can be made of materials such as rubber, and the waterproof adhesive is applied to the light-receiving surface 11. The waterproof component 200 can be elongated and extend along the length of the curved photovoltaic tile 100. The length direction of the curved photovoltaic tile 100 is perpendicular to the width direction. Generally, the width direction of the curved photovoltaic tile 100 serves as the flow direction, allowing rainwater and other liquids to flow downwards along the width direction of the curved photovoltaic tile 100.

[0038] The waterproof component 200 can divide the light-receiving surface 11 of the curved photovoltaic tile 100 into a first region 111 and a second region 112 in the width direction, or in other words, the first region 111 and the second region 112 are arranged along the width direction of the curved photovoltaic tile 100. When the photovoltaic module 1000 is used, the curved photovoltaic tile 100 can be set at an angle, with the position of the second region 112 higher than the position of the first region 111.

[0039] Junction box 300 is an electrical component of photovoltaic module 1000, which facilitates the extraction of electrical energy generated by solar cells 20. The height of junction box 300 is its dimension along the thickness direction of curved photovoltaic tile 100. Similarly, the height of waterproof component 200 is its dimension along the thickness direction of curved photovoltaic tile 100.

[0040] Please see Figures 1-4In some embodiments, the photovoltaic module 1000 includes a positive terminal 400 and a negative terminal 500, both of which are connected to a junction box 300 via wires 600. Thus, a single junction box 300 can connect the positive terminal 400 and the negative terminal 500 via wires 600, facilitating the extraction of electrical energy from the solar cells 20 through a single junction box 300.

[0041] Specifically, the junction box 300 may include a housing and conductive components disposed within the housing. One end of the wire 600 may be connected to the conductive components within the junction box 300, and the other end may be connected to the positive terminal 400 or the negative terminal 500. The positive terminal 400 and the negative terminal 500 may be electrically connected to other photovoltaic modules 1000.

[0042] Please see Figure 1 and Figure 3 In some embodiments, the waterproof component 200 includes a strip body 201 and a baffle 202. The strip body 201 is disposed on the light-receiving surface 11, and the baffle 202 extends from the edge of the body 201 in a direction away from the light-receiving surface 11. The height of the baffle 202 is greater than the height of the junction box 300, and the junction box 300 abuts against the strip body 201.

[0043] Thus, the waterproof component 200 adopts a structure consisting of a long strip body 201 and a baffle 202, which allows the waterproof component 200 to reduce the material of the waterproof component 200 while providing waterproofing, which is beneficial to reducing the cost of the photovoltaic module 1000; in addition, the junction box 300 abuts against the long strip body 201, making the structure of the photovoltaic module 1000 more compact.

[0044] Specifically, the elongated body 201 is elongated. The elongated body 201 can be a hollow structure, which reduces its weight and material usage, lowering the manufacturing cost of the waterproof component 200. The baffle 202 can be tilted away from the elongated body 201 in a direction away from the first region 111, so that the baffle 202 has a larger size at the same height, increasing the waterproofing path and improving the waterproofing effect.

[0045] Please see Figures 1-3 In some embodiments, the positive terminal 400 and the negative terminal 500 are located on opposite sides of the junction box 300. This provides sufficient space for the positive terminal 400 and the negative terminal 500 to be installed, minimizing interference and facilitating the wiring of the photovoltaic module 1000.

[0046] Please see Figure 4 In some implementations, the positive terminal 400 and the negative terminal 500 may be located on the same side of the junction box 300.

[0047] Please see Figure 1 and Figure 3In some embodiments, the area of ​​the first region 111 is larger than the area of ​​the second region 112. Thus, the solar cell 20 has a sufficiently large area to collect light, thereby improving the power generation efficiency of the curved photovoltaic tile 100.

[0048] Please see Figure 5 and Figure 6 In some embodiments, there are multiple solar cells 20, which are arranged along at least one direction; the panel 10 includes an inner surface 12 opposite to the light-receiving surface 11, the inner surface 12 facing the solar cells 20; the curved photovoltaic tile 100 includes a solder ribbon 40, which connects two adjacent solar cells 20 along a first direction D1; the panel 10 covers multiple solar cells 20 and the solder ribbon 40; the panel 10 includes an outer surface and an inner surface 12, the inner surface 12 facing the solar cells 20; the solder ribbon 40 is provided with a reflective surface 43, which is used to reflect light perpendicular to the panel 10 and incident on the solder ribbon 40 to the inner surface 12 of the panel 10 and then reflected by the inner surface 12 to the solar cells 20.

[0049] In this way, the reflective surface 43 of the solder ribbon 40 reflects the light incident on the solder ribbon 40 perpendicular to the panel 10 to the inner surface 12 of the panel 10 and then to the solar cell 20. This can reduce the adverse effects that the outward reflection of light from the solder ribbon 40 may have and can also improve the power generation efficiency of the solar cell 20.

[0050] The solder ribbon 40 is used to electrically connect multiple battery cells 20. The solder ribbon 40 can be made of conductive materials such as silver, tin or alloy to improve the conductivity of the solder ribbon 40. The reflective surface 43 forms a certain angle with the inner surface 12 of the panel 10, so that the reflective surface 43 can reflect light to the inner surface 12 of the panel 10.

[0051] Please see Figure 7 In some embodiments, the solder strip 40 is formed with a groove 44 opening towards the panel 10, and a reflective surface 43 is formed on the side of the groove 44. In this way, the reflective surface 43 is formed by the groove 44, which makes the reflective surface 43 easy to form and can reduce the manufacturing cost of the solder strip 40.

[0052] Please see Figure 7 In some embodiments, the cross-section of the groove 44 is V-shaped. This facilitates the formation of the groove 44. It should be noted that the cross-section of the groove 44 is the surface formed by cutting the solder strip 40 with a plane perpendicular to its length direction.

[0053] Please see Figure 7In some embodiments, there are multiple reflective surfaces 43 along the length direction perpendicular to the solder ribbon 40, and the multiple reflective surfaces 43 are arranged sequentially. In this way, multiple reflective surfaces 43 can improve the reflectivity of the solder ribbon 40 and reduce the light reflected from the solder ribbon 40 to the curved photovoltaic tile 100W.

[0054] Please see Figures 8-9 In some embodiments, the welding strip 40 includes a plurality of first welding segments 41 and at least one second welding segment 42. The first welding segment 41 is connected to a corresponding solar cell 20, and the length of the first welding segment 41 is greater than the length of the second welding segment 42. The second welding segment 42 connects two adjacent first welding segments 41 along a first direction D1, and is located between two adjacent solar cells 20. The solar cell 20 includes a first surface 22 and a second surface 23 facing away from each other. In two adjacent solar cells 20, the first surface 22 of one solar cell 20 is provided with a first welding segment 41, and the second surface 23 of the other solar cell 20 is also provided with a first welding segment 41.

[0055] In this way, the solder ribbon 40 is connected to the solar cell 20 by interlacing vertically, which reduces the area of ​​the solder ribbon 40 on the same side of all solar cells 20, thereby reducing light reflection.

[0056] Specifically, the first welding segment 41 of the welding strip 40 can be welded to the battery cell 20, and the number of the second welding segments 42 is one less than the number of the first welding segments 41. For example, when there are two first welding segments 41, there is one second welding segment 42. The first welding segment 41 and the second welding segment 42 can be an integral structure.

[0057] like Figure 8 As shown, the first surface 22 of the left battery cell 20 is provided with a first welding section 41, and the second surface 23 of the right battery cell 20 is provided with a second welding section 42.

[0058] Please see Figure 8 and Figure 9 In some embodiments, the second welding segment 42 is flat. The surface with the largest area of ​​the second welding segment 42 faces the battery cell 20. In this way, the contact area between the second welding segment 42 and the battery cell 20 is increased, reducing the pressure on the battery cell 20, thereby reducing defects such as cracks in the battery cell 20.

[0059] like Figure 8As shown, in some embodiments, two adjacent battery cells 20 are partially stacked along the first direction D1, and a second welding segment 42 spans the stacked region 21 of the two adjacent battery cells 20. The stacked region 21 of the two adjacent battery cells 20 refers to the area where the two adjacent battery cells 20 have overlapping areas. The second welding segment 42 spans the stacked region 21, meaning that the ends of the second welding segment 42 along the first direction D1 extend beyond the stacked region 21. The second welding segment 42 is flat, meaning that the width of the second welding segment 42 is greater than the height of the second welding segment 42.

[0060] like Figure 10 and Figure 11 As shown, in some embodiments, two adjacent battery cells 20 are spaced apart along the first direction D1, and the two ends of the second welding section 42 are respectively connected to the two adjacent battery cells 20.

[0061] Please see Figure 9 In some embodiments, the width of the first welding segment 41 is W1, and the width of the second welding segment 42 is W2, where 2 ≤ W2 / W1 ≤ 3. Alternatively, the width of the second welding segment 42 is greater than the width of the first welding segment 41. This allows the solder strip 40 to have a larger width at the second welding segment 42, which helps to increase the contact area between the solder strip 40 and the stacked area 21 of the battery cell 20, reduce the pressure of the second welding segment 42 on the battery cell 20, and lower the risk of cracks in the battery cell 20.

[0062] Specifically, W2 / W1 can be values ​​such as 2, 2.2, 2.5, 3, etc. It can be understood that since the solder strip 40 is a long, thin strip, its length is its maximum dimension. The height direction and length direction of the solder strip 40 are perpendicular to each other, and the height direction of the solder strip 40 is the same as the thickness direction of the battery cell 20.

[0063] Please see Figure 8 In some embodiments, the height of the first welding segment 41 is H1, and the height of the second welding segment 42 is H2, where 2 ≤ H1 / H2 ≤ 5. Alternatively, the height of the first welding segment 41 is greater than the height of the second welding segment 42, making it easier for the second welding segment 42 to be flattened. Specifically, H1 / H2 can be values ​​such as 2, 2.5, 3, 4, and 5. The second welding segment 42 can be formed by pressing a welding segment of the same specifications as the first welding segment 41, resulting in a flattened shape.

[0064] Please see Figure 8 and Figure 9In some embodiments, the width of the second welding segment 42 is W2, and the height of the second welding segment 42 is H2, where 3 ≤ W2 / H2 ≤ 14. For example, W2 / H2 can be values ​​such as 3, 3.5, 6, 9, and 14. Thus, the width-to-height ratio of the second welding segment 42 is relatively large, the second welding segment 42 is flat, and the contact area between the second welding segment 42 and the battery cell 20 is large. This can reduce the pressure on the battery cell 20 during manufacturing and lower the risk of hidden cracks in the battery cell 20.

[0065] In some embodiments, the first weld segment 41 has a circular cross-section. This makes the first weld segment 41 easier to form and reduces manufacturing costs. Specifically, a single circular strip can be used, and a portion of the circular strip can be flattened, so that the flattened portion forms the second weld segment 42, and the unflattened portion forms the first weld segment 41.

[0066] Please see Figure 9 In some embodiments, the width of the first welding segment 41 is W1, where 0.18mm ≤ W1 ≤ 0.26mm. For example, W1 can be 0.18mm, 0.20mm, 0.24mm, 0.26mm, etc. Thus, when the first welding segment 41 is within the above range, it saves materials while meeting the conductivity requirements, reducing the manufacturing cost of the photovoltaic tile.

[0067] Please see Figure 9 In some embodiments, the width of the second welding segment 42 is W2, where 0.3mm ≤ W2 ≤ 0.7mm. For example, W2 can be 0.3mm, 0.35mm, 0.4mm, 0.7mm, etc. Thus, the second welding segment 42 has a larger width, which increases the contact area between the second welding segment 42 and the battery cell 20, reducing the risk of cracks appearing in the battery cell 20.

[0068] Please see Figure 8 In some embodiments, the height of the first welding segment 41 is H1, where 0.18mm ≤ H1 ≤ 0.26mm. For example, H1 can be 0.18mm, 0.21mm, 0.24mm, 0.26mm, etc. Thus, when the first welding segment 41 is within the above range, it saves material while meeting the conductivity requirements, reducing the manufacturing cost of the photovoltaic tile. It can be understood that when the cross-section of the first welding segment 41 is circular, the height and width of the first welding segment 41 are equal, and both are equal to the diameter of the first welding segment 41.

[0069] Please see Figure 8In some embodiments, the height of the second welding segment 42 is H2, where 0.05mm ≤ H2 ≤ 0.09mm. For example, H2 can be 0.05mm, 0.06mm, 0.07mm, 0.09mm, etc. Thus, the height of the second welding segment 42 is relatively small, and when the width of the second welding segment 42 is constant, material can be saved, reducing the manufacturing cost of the photovoltaic tile.

[0070] Please see Figure 5 In some embodiments, along the first direction D1, two adjacent battery cells 20 are connected by a plurality of solder ribbons 40, and the plurality of solder ribbons 40 are spaced apart along the second direction D2, which intersects the first direction D1. Thus, the plurality of solder ribbons 40 can improve the overcurrent capacity of the electrical connection between the two battery cells 20, and even if one solder ribbon 40 breaks, the other solder ribbons 40 can still electrically connect the two battery cells 20, improving reliability. In the embodiments of this application, the first direction D1 and the second direction D2 are arranged perpendicularly.

[0071] Please see Figure 12 The photovoltaic device 2000 of this application includes multiple photovoltaic modules 1000 and multiple curved photovoltaic tiles 100 electrically connected through a junction box 300. Thus, the electrical connection of multiple curved photovoltaic tiles 100 can increase the power generation of the photovoltaic modules 1000.

[0072] In the description of embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0073] 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., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is 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. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0074] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A photovoltaic module, characterized in that, include: A curved photovoltaic tile, comprising a panel, solar cells, and a back sheet stacked sequentially, wherein the panel includes a light-receiving surface facing away from the solar cells; A waterproof component is disposed on the light-receiving surface and divides the light-receiving surface into a first region and a second region. The solar cell corresponds to the first region, and the second region is used to overlap with other photovoltaic modules. and A junction box is disposed in the second area and electrically connected to the battery cell, the height of which is lower than the height of the waterproof component.

2. The photovoltaic module according to claim 1, characterized in that, The photovoltaic module includes a positive terminal and a negative terminal, both of which are connected to the junction box via wires.

3. The photovoltaic module according to claim 2, characterized in that, The positive terminal and the negative terminal are located on opposite sides of the junction box.

4. The photovoltaic module according to claim 1, characterized in that, The area of ​​the first region is larger than the area of ​​the second region.

5. The photovoltaic module according to claim 1, characterized in that, The waterproof component includes a long strip body and a baffle plate. The long strip body is disposed on the light-receiving surface, and the baffle plate extends from the edge of the body in a direction away from the light-receiving surface. The height of the baffle plate is greater than the height of the junction box, and the junction box abuts against the long strip body.

6. The photovoltaic module according to claim 1, characterized in that, The number of solar cells is multiple, and the multiple solar cells are arranged along at least one direction. The panel includes an inner surface opposite to the light-receiving surface, and the inner surface faces the solar cells. The curved photovoltaic tile includes a solder strip, and the solder strip connects two adjacent solar cells along a first direction. The solder strip is provided with a reflective surface, which is used to reflect light perpendicular to the panel and incident on the solder strip to the inner surface of the panel, and then be reflected by the inner surface to the solar cells.

7. The photovoltaic module according to claim 6, characterized in that, The solder strip has a groove with an opening facing the panel, and the side of the groove forms the reflective surface.

8. The photovoltaic module according to claim 6, characterized in that, The welding strip includes a plurality of first welding segments and at least one second welding segment. The first welding segment is connected to a corresponding solar cell. The length of the first welding segment is greater than the length of the second welding segment. The second welding segment connects two adjacent first welding segments along the first direction. The second welding segment is located between two adjacent solar cells. The solar cell includes a first surface and a second surface facing away from each other. In two adjacent solar cells, the first surface of one solar cell is provided with the first welding segment, and the second surface of the other solar cell is provided with the first welding segment.

9. The photovoltaic module according to claim 8, characterized in that, The second welding section is flat, and the surface with the largest area of ​​the second welding section faces the battery cell.

10. A photovoltaic device, characterized in that, The invention includes a plurality of photovoltaic modules as described in any one of claims 1-9, wherein the plurality of the curved photovoltaic tiles are electrically connected through the junction box.

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