Photovoltaic module and photovoltaic system

Abstract

The utility model provides a kind of photovoltaic module and photovoltaic system, it is related to solar energy technical field, and the power of photovoltaic module can be improved.The photovoltaic module includes: cell array, including multiple photovoltaic cells;Front plate, located the light side of cell array, the size of front plate is greater than or equal to the size of cell array, first edge is the edge of the front plate close to the edge frame uncovered area, second edge is the edge of cell array close to first edge, first edge is any one edge of front plate, the distance between first edge and second edge is less than first length;Identification code, located the side of front plate close to cell array, the orthographic projection of identification code and the orthographic projection of at least one target photovoltaic cell in multiple photovoltaic cells overlap, first length is the length of identification code in the direction of first edge pointing to second edge.

Description

Technical Field

[0001] This utility model relates to the field of solar energy technology, and in particular to photovoltaic modules and photovoltaic systems. Background Technology

[0002] Photovoltaic modules typically consist of solar cells and a front panel covering the solar cells. The light-facing side of the module usually has an identification code (such as a QR code or barcode) for product traceability, production management, and quality control.

[0003] In existing technologies, the area below the edge of the module is reserved for identification codes, and no photovoltaic cells are installed there, resulting in a waste of the light-receiving surface, thereby reducing the power of the photovoltaic module and affecting its overall power output. Summary of the Invention

[0004] This invention provides a photovoltaic module and a photovoltaic system that can improve the power of the photovoltaic module.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] In a first aspect, a photovoltaic module is provided, comprising: a cell array including a plurality of photovoltaic cells; a front panel located on the light-facing surface of the cell array, the size of the front panel being greater than or equal to the size of the cell array; a frame located around the photovoltaic module; a first edge being the edge of the front panel near an uncovered area of ​​the frame; a second edge being the edge of the cell array near the first edge; the first edge being any edge of the front panel; the distance between the first edge and the second edge being less than a first length; and an identification code located on the side of the front panel near the cell array, the orthographic projection of the identification code overlapping the orthographic projection of at least one target photovoltaic cell among the plurality of photovoltaic cells; the first length being the length of the identification code in the direction from the first edge to the second edge.

[0007] In conjunction with the first aspect, in some embodiments of the first aspect, the orthographic projection of the identification code partially overlaps with the orthographic projection of two target photovoltaic cells, which are adjacent vertically or horizontally.

[0008] In conjunction with the first aspect, in some embodiments of the first aspect, each of the two target photovoltaic cells is located at the edge of the cell array.

[0009] In conjunction with the first aspect, in some embodiments of the first aspect, the central axis of the identification code coincides with the central axis of the two target photovoltaic cells along the arrangement direction of the two target photovoltaic cells.

[0010] In conjunction with the first aspect, in some embodiments of the first aspect, the orthographic projection of the identification code partially overlaps with the orthographic projection of the four target photovoltaic cells.

[0011] In conjunction with the first aspect, in some embodiments of the first aspect, at least two of the four target photovoltaic cells are located in the edge region of the cell array.

[0012] In conjunction with the first aspect, in some embodiments of the first aspect, at least one of the two target photovoltaic cells or four target photovoltaic cells is located in the corner region of the cell array.

[0013] In conjunction with the first aspect, in some embodiments of the first aspect, the identification code has the same orthographic projection size on each target photovoltaic cell.

[0014] In conjunction with the first aspect, in some embodiments of the first aspect, the first length is 2 mm to 15 mm.

[0015] In conjunction with the first aspect, in some embodiments of the first aspect, the identification code has at least one color.

[0016] In conjunction with the first aspect, in some embodiments of the first aspect, the identification code is composed of a transparent insulating adhesive, the transparent insulating adhesive including fluorescent particles, and the transparent insulating adhesive forms the code body of the identification code.

[0017] In conjunction with the first aspect, in some embodiments of the first aspect, the identification code is applied to the side of the front panel near the cell array by spraying, pasting, inkjet printing or printing.

[0018] Based on this solution, compared to existing solutions where there are no solar cells below the edge area of ​​the front panel, the photovoltaic module provided by this utility model includes: a solar cell array composed of multiple photovoltaic cells; a front panel located on the light-facing surface of the solar cell array; and an identification code on the front panel. Since the size of the front panel is greater than or equal to the size of the solar cell array, the distance between the first edge of the front panel and the second edge of the solar cell array is less than the length of the identification code in the direction from the first edge to the second edge. Therefore, in the same area, as many solar cells as possible cover the entire photovoltaic module, enabling the photovoltaic module to generate more electrical energy, thereby increasing the power of the photovoltaic module. At the same time, since the orthographic projection of the identification code overlaps with the orthographic projection of at least one target solar cell among the multiple solar cells, the hot spot effect of the solar cells and the impact of series adaptation on the power can be reduced, further improving the power of the module.

[0019] In a second aspect, a photovoltaic system is provided, which includes photovoltaic modules provided in the first aspect and any possible implementation thereof.

[0020] The technical effects brought about by the second aspect can be referred to the technical effects brought about by the different implementation methods of the first aspect mentioned above, and will not be repeated here. Attached Figure Description

[0021] Figure 1 A top view of an existing photovoltaic module provided for this utility model;

[0022] Figure 2 A top view of a photovoltaic module provided by this utility model;

[0023] Figure 3 A top view of yet another photovoltaic module provided by this utility model;

[0024] Figure 4 A top view of yet another photovoltaic module provided by this utility model;

[0025] Figure 5 A top view of yet another photovoltaic module provided by this utility model;

[0026] Figure 6 This is a top view of another photovoltaic module provided by this utility model. Attached Figure Description

[0028] Photovoltaic module-10, cell array-101, photovoltaic cell-1011, target photovoltaic cell-10111, front panel-102, first edge-1021, identification code-103, frame-104. Detailed Implementation

[0029] In this embodiment of the invention, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" or "for example" in this embodiment of the invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner to facilitate understanding.

[0030] Furthermore, to facilitate a clear description of the technical solutions of the embodiments of this utility model, the terms "first" and "second" are used in the embodiments of this utility model to distinguish identical or similar items with essentially the same function and effect. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and the terms "first" and "second" are not necessarily different.

[0031] It is understood that the term "embodiment" used throughout the specification means that a specific feature, structure, or characteristic related to an embodiment is included in at least one embodiment of the present invention. Therefore, the various embodiments throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. It is understood that in the various embodiments of the present invention, the sequence number of each process does not imply the order of execution; the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0032] It is understood that in this utility model, "when," "if," and "if" all refer to the corresponding processing that will be carried out under certain objective circumstances, and are not limited to a specific time, nor do they require a judgment action to be performed, nor do they imply any other limitations.

[0033] It is understood that some optional features in the embodiments of this utility model can be implemented independently in certain scenarios without relying on other features, such as the current solution on which they are based, to solve the corresponding technical problems and achieve the corresponding effects. Alternatively, they can be combined with other features as needed in certain scenarios. Correspondingly, the device given in the embodiments of this utility model can also implement these features or functions, which will not be elaborated here.

[0034] In this utility model, unless otherwise specified, the same or similar parts between the various embodiments can be referred to each other. In the various embodiments and implementation methods of this utility model, unless otherwise specified or logically conflicting, the terminology and / or descriptions between different embodiments and between the implementation methods of different embodiments are consistent and can be mutually referenced. The technical features in different embodiments and between the implementation methods of different embodiments can be combined according to their inherent logical relationships to form new embodiments, implementation methods, implementation methods, or implementation approaches. The following embodiments of this utility model do not constitute a limitation on the scope of protection of this utility model.

[0035] Photovoltaic modules consist of solar cells and a front panel covering the solar cells. The light-facing side of the module is usually marked with identification codes (such as QR codes or barcodes) for product traceability, production management, and quality control.

[0036] In existing technologies, the area below the edge of the photovoltaic module 10 is reserved for a pre-designated identification code, without any solar cells installed, resulting in a waste of the light-receiving surface. Figure 1 A top view of an existing photovoltaic module provided by this utility model, such as Figure 1As shown, photovoltaic cells 1011 are not installed below the edge area of ​​the front panel 102 in the photovoltaic module 10. The identification code 103 is usually located in the edge area of ​​the front panel 102, which makes it impossible to install photovoltaic cells 1011 in a part of the edge area of ​​the front panel 102. As a result, no electricity can be generated in the part of the edge area of ​​the front panel 102 where no photovoltaic cells are installed, thereby reducing the power of the photovoltaic module 10.

[0037] To address the aforementioned problems, this utility model provides a photovoltaic module 10. Figure 2 This is a top view of a photovoltaic module 10 provided by the present invention. Figure 3 This is a top view of another photovoltaic module 10 provided by this utility model. Figure 4 This is a top view of a photovoltaic module 10 provided by the present invention. Figure 3 This is a top view of another photovoltaic module 10 provided by this utility model. Figure 5 This is a top view of a photovoltaic module 10 provided by the present invention. Figure 6 A top view of another photovoltaic module 10 provided by this utility model, as shown below. Figure 2 or Figure 3 or Figure 4 or Figure 5 or Figure 6 As shown, the photovoltaic module 10 includes: a cell array 101, including a plurality of photovoltaic cells 1011; a front panel 102, located on the light-facing surface of the cell array 101, the size of the front panel 102 being greater than or equal to the size of the cell array 101; a frame 104, located around the photovoltaic module; a first edge 1021 being the edge of the front panel 102 near the uncovered area of ​​the frame 104; a second edge 1012 being the edge of the cell array 101 near the first edge 1021; the first edge 1021 being any edge of the front panel 102; the distance d1 between the first edge 1021 and the second edge 1012 being less than a first length d2; and an identification code 103, located on the side of the front panel 102 near the cell array 101, the orthographic projection of the identification code 103 overlapping the orthographic projection of at least one target photovoltaic cell 10111 among the plurality of photovoltaic cells 1011; the first length d2 being the length of the identification code 103 in the direction from the first edge 1021 to the second edge 1012.

[0038] There may or may not be gaps between adjacent solar cells 1011 in the solar cell array 101; this invention does not impose specific limitations on this. Solar cells 1011 can be P-type solar cells, such as PERC solar cells, or N-type solar cells, such as TOPCon solar cells, HJT / HIT solar cells, IBC solar cells, or HBC solar cells. Of course, solar cells 1011 can also be other types of solar cells; this invention does not impose specific limitations on this.

[0039] The front panel 102 can be a glass plate, such as an ultra-clear glass plate, a coated glass plate, a tempered glass plate, or an ultra-thin glass plate. Of course, the glass plate 102 can also be other types of glass plates, and this utility model does not impose specific limitations on it. The front panel 102 has high light transmittance and high transparency, and has superior physical, mechanical, and optical properties, protecting the photovoltaic cell 1011 while minimizing the impact on its efficiency.

[0040] The front panel 102 of the photovoltaic module 10 needs to be supported and fixed by the frame 104 of the photovoltaic module 10 to ensure that the photovoltaic module 10 meets certain mechanical load performance and facilitates subsequent installation. The identification code 103 can be a QR code or a barcode. Of course, the identification code 103 can also be other types of identification codes, and this utility model does not make specific limitations in this regard.

[0041] The first length is 2mm to 15mm, for example, the first length is 2mm, 5mm, 10mm, 12mm, 14mm, 5mm.

[0042] The identification code 103 can be set on the front panel 102 by spraying, pasting, inkjet printing or printing. Of course, the identification code 103 can also be set on the front panel 102 in other ways.

[0043] The material of the identification code 103 can be PET material, or it can be inkjet printed directly on the front panel 102.

[0044] The identifier 103 has at least one color. When the identifier 103 has one color, it has a hollow structure, meaning that apart from the code body itself, other parts of the identifier 103 are colorless. When the identifier 103 has two colors, it can be a two-color stripe background structure, meaning that apart from the code body itself, other parts of the identifier 103 are a colored background.

[0045] The identification code 103 is composed of transparent insulating adhesive, which includes fluorescent particles, forming the code body of the identification code 103. Thus, the code body of the identification code 103 is invisible under natural light, does not obstruct the photovoltaic cell 1011, and does not affect the power generation of the photovoltaic cell 1011. This solves the problem of hot spots caused by shading of the photovoltaic cell 1011, improves the safety performance of the photovoltaic module 10, and allows identification of the information in the identification code 103 by illuminating it with a UV lamp when needed.

[0046] d1 can be less than or equal to 0, that is, the first edge 1021 coincides with the second edge 1012, or the border 104 covers the second edge 1012. d1 can also be a positive number less than d2, that is, the first edge 1021 does not coincide with the second edge 1012. This utility model does not impose specific restrictions on this.

[0047] In one implementation, when there are two target photovoltaic cells 10111, that is, the orthographic projection of the identification code 103 overlaps with the orthographic projections of the two target photovoltaic cells 10111, such as... Figure 2 As shown, two target photovoltaic cells 10111 are adjacent to each other, and the length direction of the identifier 103 is parallel to the arrangement direction of the two target photovoltaic cells 10111; as Figure 3 As shown, two target photovoltaic cells 10111 are adjacent to each other, and the length direction of the identifier 103 is perpendicular to the arrangement direction of the two target photovoltaic cells 10111; as Figure 4 As shown, two target photovoltaic cells 10111 are adjacent in the upper row, and the length direction of the identifier 103 is perpendicular to the arrangement direction of the two target photovoltaic cells 10111; as Figure 5 As shown, two target photovoltaic cells 10111 are adjacent to each other on the left and right, and the length direction of the identification code 103 is parallel to the arrangement direction of the two target photovoltaic cells 10111.

[0048] The two adjacent target photovoltaic cells 10111 can be located at any position in the cell array 101, such as Figure 2 or Figure 3 or Figure 4 or Figure 5 As shown, each of the two target photovoltaic cells 10111 is located at the edge of the cell array 101, which makes it more convenient to perform barcode scanning and identification. Preferably, as Figure 2 or Figure 3 or Figure 4 or Figure 5 As shown, at least one of the two target photovoltaic cells 10111 is located in the corner region of the cell array 101, so that it can be operated more conveniently at a closer distance when scanning and identifying.

[0049] The length direction of the identifier 103 can be different from the arrangement direction of the two adjacent target photovoltaic cells 10111, or, as... Figure 2 As shown, the length direction of the identifier 103 can be the same as the arrangement direction of the two adjacent target photovoltaic cells 10111.

[0050] The identifier 103 can have any relative position with the two adjacent target photovoltaic cells 10111, preferably, as follows: Figure 2 or Figure 3 or Figure 4 or Figure 5 As shown, along the arrangement direction of the two target photovoltaic cells 10111, the central axis of the identification code 103 coincides with the central axis of the two target photovoltaic cells 10111. In this way, the series mismatch caused by the different shading areas of the two target photovoltaic cells 10111 due to the identification code 103 can be reduced.

[0051] Typically, the identifier 103 and the target photovoltaic cell 10111 are of regular shape. Therefore, the identifier 103 and the target photovoltaic cell 10111 each have two central axes. One central axis of the identifier 103 can coincide with one central axis of the two target photovoltaic cells 10111, or... Figure 2 or Figure 3 or Figure 4 or Figure 5 The two central axes of the identification code 103 can correspond to and coincide with the two central axes of the two target photovoltaic cells 10111 respectively.

[0052] The size of the overlapping area between the orthographic projection of each target photovoltaic cell 10111 and the orthographic projection of the identification code 103 can be different or the same. Preferably, as shown below... Figure 2 or Figure 3 or Figure 4 or Figure 5 As shown, the overlapping area of ​​the orthographic projection of each target photovoltaic cell 10111 and the orthographic projection of the identification code 103 is the same size. In this way, the influence of the identification code 103 on the two target photovoltaic cells 10111 is consistent, avoiding a large impact on one of the target photovoltaic cells 10111 and causing series mismatch.

[0053] In another implementation, when there are four target photovoltaic cells 10111, that is, the orthographic projection of the identifier 103 overlaps with the orthographic projections of the four target photovoltaic cells 10111, such as... Figure 6 As shown, four target photovoltaic cells 10111 are arranged side by side.

[0054] The four target photovoltaic cells 10111 arranged side by side can be located at any position in the cell array 101, such as Figure 6 As shown, at least one of the four target photovoltaic cells 10111 is located in the edge region of the cell array 101, which makes it more convenient to perform barcode scanning and identification. Preferably, at least two of the four target photovoltaic cells 10111 are located in the edge region of the cell array 101, which allows for closer and more convenient operation during barcode scanning and identification.

[0055] The length direction of the identifier 103 may be different from the length direction of the target photovoltaic cell 10111, or, as... Figure 6 As shown, the length direction of the identifier 103 can be the same as the length direction of the target photovoltaic cell 10111.

[0056] The orthographic projection size of identification code 103 on each target photovoltaic cell 10111 can be different or the same. Preferably, as Figure 6 As shown, the orthographic projection size of the identification code 103 is the same for each target photovoltaic cell 10111. This ensures that the influence of the identification code 103 on the two target photovoltaic cells 10111 is consistent, avoiding a large impact on one of the target photovoltaic cells 10111, which could lead to series mismatch or hot spots.

[0057] Based on this solution, compared to existing solutions where there are no solar cells below the edge area of ​​the front panel, the photovoltaic module provided by this utility model includes: a solar cell array composed of multiple photovoltaic cells; a front panel located on the light-facing surface of the solar cell array; and an identification code on the front panel. Since the size of the front panel is greater than or equal to the size of the solar cell array, the distance between the first edge of the front panel and the second edge of the solar cell array is less than the length of the identification code in the direction from the first edge to the second edge. Therefore, in the same area, as many solar cells as possible cover the entire photovoltaic module, enabling the photovoltaic module to generate more electrical energy, thereby increasing the power of the photovoltaic module. At the same time, since the orthographic projection of the identification code overlaps with the orthographic projection of at least one target solar cell among the multiple solar cells, the hot spot effect of the solar cells and the impact of series adaptation on the power can be reduced, further improving the power of the module.

[0058] Furthermore, the photovoltaic module 10 also includes a backsheet and an encapsulant film. The encapsulant film is filled between the front and back sides of the photovoltaic cells 1011, the front panel 102, and the backsheet. As a filler, it can be a transparent colloid with good light transmission and aging resistance. For example, the encapsulant film can be EVA film or POE film. The specific choice can be made according to the actual situation and is not limited here.

[0059] The backsheet can be attached to the adhesive film on the back of the photovoltaic cell 1011. The backsheet provides protection and support for the photovoltaic cell 1011, and has reliable insulation, water resistance, and aging resistance. Multiple options are available for the backsheet, typically tempered glass, acrylic glass, aluminum alloy TPT composite adhesive film, etc., and the specific choice depends on the specific circumstances and is not limited here. The backsheet, photovoltaic cell 1011, adhesive film, and front panel 102 can be integrated within the frame 104. The frame 104 serves as a supporting and protective structure around the entire photovoltaic module 10, and provides stable support and installation for the photovoltaic module 10. For example, the frame can be used to fix the photovoltaic module 10 to the desired installation position.

[0060] This utility model embodiment provides a photovoltaic system, including the photovoltaic module 10 described above.

[0061] In this embodiment, the photovoltaic system can be applied in photovoltaic power plants, such as ground-mounted power plants, rooftop power plants, and floating power plants. It can also be applied to equipment or devices that utilize solar energy to generate electricity, such as user solar power supplies, solar streetlights, solar cars, and solar buildings. Of course, it is understood that the application scenarios of the photovoltaic system are not limited to these; that is, the photovoltaic system can be applied in all fields that require solar energy to generate electricity. Taking a photovoltaic power generation system network as an example, the photovoltaic system may include a photovoltaic array, a combiner box, and an inverter. The photovoltaic array may be an array combination of multiple photovoltaic modules 10. For example, multiple photovoltaic modules 10 can form multiple photovoltaic arrays. The photovoltaic array is connected to the combiner box, which can collect the current generated by the photovoltaic array. The collected current flows through the inverter and is converted into AC power required by the mains power grid before being connected to the mains power grid to achieve solar power supply.

[0062] Although the present invention has been described herein in conjunction with various embodiments, those skilled in the art will understand and implement other variations of the disclosed embodiments by reviewing the accompanying drawings, the disclosure, and the appended claims in carrying out the claimed invention. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude a plurality. A single processor or other unit can implement several functions listed in the claims. While different dependent claims may recite certain measures, this does not mean that these measures cannot be combined to produce good results.

[0063] Although the present invention has been described in conjunction with specific features and embodiments, it is obvious that various modifications and combinations can be made thereto without departing from the spirit and scope of the present invention. Accordingly, this specification and drawings are merely exemplary descriptions of the present invention as defined by the appended claims, and are considered to cover any and all modifications, variations, combinations, or equivalents within the scope of the present invention. Clearly, those skilled in the art can make various alterations and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and modifications of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and modifications.

Claims

1. A photovoltaic module, characterized in that, The photovoltaic module includes: A solar cell array, comprising multiple photovoltaic cells; A front panel is located on the light-facing surface of the solar cell array, and the size of the front panel is greater than or equal to the size of the solar cell array. The frame, located around the photovoltaic module; The first edge is the edge of the front panel near the uncovered area of ​​the frame, the second edge is the edge of the battery array near the first edge, the first edge is any edge of the front panel, and the distance between the first edge and the second edge is less than the first length; An identification code is located on the side of the front panel near the cell array. The orthographic projection of the identification code overlaps with the orthographic projection of at least one target photovoltaic cell among the plurality of photovoltaic cells. The first length is the length of the identification code in the direction from the first edge to the second edge.

2. The photovoltaic module according to claim 1, characterized in that, The orthographic projection of the identification code overlaps with the orthographic projection of two target photovoltaic cells, which are adjacent vertically or horizontally.

3. The photovoltaic module according to claim 2, characterized in that, Each of the two target photovoltaic cells is located at the edge of the cell array.

4. The photovoltaic module according to claim 2, characterized in that, Along the arrangement direction of the two target photovoltaic cells, the central axis of the identification code coincides with the central axis of the two target photovoltaic cells.

5. The photovoltaic module according to claim 1, characterized in that, The orthographic projection of the identification code overlaps with the orthographic projections of the four target photovoltaic cells.

6. The photovoltaic module according to claim 5, characterized in that, At least two of the four target photovoltaic cells are located in the edge region of the cell array.

7. The photovoltaic module according to claim 3 or 6, characterized in that, The two target photovoltaic cells or at least one of the four target photovoltaic cells are located in the corner region of the cell array.

8. The photovoltaic module according to claim 4, characterized in that, The identification code has the same orthographic projection size for each target photovoltaic cell.

9. The photovoltaic module according to claim 1, characterized in that, The first length is 2mm to 15mm.

10. The photovoltaic module according to claim 1, characterized in that, The identification code has at least one color.

11. The photovoltaic module according to claim 1, characterized in that, The identification code is made of transparent insulating adhesive, which includes fluorescent particles, and the transparent insulating adhesive forms the code body of the identification code.

12. The photovoltaic module according to claim 1, characterized in that, The identification code is applied to the side of the front panel near the cell array by spraying, pasting, inkjet printing, or printing.

13. A photovoltaic system, characterized in that, The photovoltaic system includes the photovoltaic module as described in any one of claims 1-12.

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