Solar cell modules and photovoltaic systems

Abstract

This invention provides a solar cell module and a photovoltaic system. The solar cell module includes: a first cover plate, a first sealing layer, a cell layer, a second sealing layer, and a second cover plate, laminated sequentially; a frame structure disposed around the first cover plate; and an identification code, which includes an information identification area and a non-information identification area. The projection of the identification code onto the first sealing layer partially overlaps with the projection of the cell layer onto the first sealing layer, and the projection of the information identification area onto the first sealing layer at least partially avoids the projection of the cell layer onto the first sealing layer. Because the identification code includes both information identification and non-information identification areas, and the projection of the information identification area onto the first sealing layer at least partially avoids the projection of the cell layer onto the first sealing layer, the information identification area in the identification code can be exposed, thereby enabling the information in the identification code to be effectively identified and improving the identifiability of the identification code.

Description

Technical Field

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

[0002] Identification codes are an important component of solar cell modules, primarily used for information tracking. During the production process, scanning the identification codes allows information about the solar cell modules to be entered into the system, enabling the long-term storage of various production information.

[0003] In related technologies, identification codes within solar cell modules are typically affixed to the busbars on the cell layers. However, in some solar cell modules, since the busbars are located on the back of the cells, the identification codes are no longer placed on the busbars but are usually placed on the encapsulant film or front panel so that the barcode information can be identified from the front of the module. If the barcode's information recognition area is not set properly, the information on the identification code may be obscured, making it impossible to effectively identify the information.

[0004] Therefore, how to effectively identify the information on the identification code in solar cell modules has become an urgent problem to be solved. Utility Model Content

[0005] This invention provides a solar cell module and a photovoltaic system to solve the technical problem that the information on the identification code in the solar cell module cannot be effectively identified.

[0006] In a first aspect, this utility model provides a solar cell module, comprising: a first cover plate, a first sealing layer, a cell layer, a second sealing layer, and a second cover plate laminated sequentially, wherein the cell layer comprises a plurality of connected cell cells; a frame structure disposed around the first cover plate; and an identification code, the identification code comprising an information identification area and a non-information identification area. In the thickness direction of the solar cell module, the projection of the identification code onto the first sealing layer partially overlaps with the projection of the cell layer onto the first sealing layer, and the projection of the information identification area onto the first sealing layer at least partially avoids the projection of the cell layer onto the first sealing layer. Because the identification code comprises both information identification and non-information identification areas, and the projection of the information identification area onto the first sealing layer at least partially avoids the projection of the cell layer onto the first sealing layer, the information identification area of ​​the identification code is not completely obscured by the cell layer, allowing the information identification area in the identification code to be exposed, thereby enabling effective identification of the information in the identification code and improving its recognizability.

[0007] Furthermore, in the thickness direction of the solar cell module, the projection of the non-information identification area onto the first sealing layer partially overlaps with the projection of the cell layer onto the first sealing layer. This allows the information identification area of ​​the identification code to protrude beyond the cell layer, ensuring the information identification area is fully exposed while reducing the complexity of the identification code setup process, thus improving production efficiency and yield.

[0008] Furthermore, in the thickness direction of the solar cell module, the projection of the non-information identification area onto the first sealing layer completely overlaps with the projection of the cell layer onto the first sealing layer. This ensures that the entire area of ​​the identification code exposed from the cell layer is an information identification area, thereby improving the identification efficiency.

[0009] Furthermore, in the thickness direction of the solar cell module, the projection of the information recognition area onto the first sealing layer completely avoids the projection of the solar cell layer onto the first sealing layer. This ensures that the entire information recognition area is unobstructed by the solar cell layer, thereby maximizing the recognition effect of the identification code.

[0010] Furthermore, the identification code is affixed to the battery cell layer or the second cover plate. This improves the stability of the identification code setting.

[0011] Furthermore, it also includes an adhesive component connected to the identification code, which is used to attach the identification code to the battery cell layer or the second cover plate. Thus, the adhesive component further improves the stability of the identification code installation.

[0012] Furthermore, in the thickness direction of the solar cell module, the projection of the adhesive on the first sealing layer is completely covered by the identification code and the projection of the cell layer on the first sealing layer. This effectively hides the adhesive, preventing bubbles and wrinkles from being visible, thus preserving the appearance of the solar cell module and improving its aesthetics.

[0013] Furthermore, the number of the adhesive pieces is one or more.

[0014] Furthermore, the area of ​​the information identification region is larger than the area of ​​the non-information identification region. This allows the identification code to carry more encoded information within a limited space, increasing its information capacity and facilitating subsequent traceability, management, and quality control of the solar cell modules. Secondly, the larger information identification region in the identification code helps improve the stability and accuracy of identification, even when the surface of the solar cell module is contaminated, worn, or subject to optical interference, thus increasing the success rate of identification. In addition, compared to the non-information identification region, the larger information identification region allows for more efficient use of the space occupied by the identification code, improving the overall layout efficiency.

[0015] Furthermore, the area ratio of the information identification area to the non-information identification area is between 0.25 and 9. This allows for a larger information identification area in the identification code, enabling the code to carry more encoded information within a limited space, thus increasing its information capacity and facilitating subsequent traceability, management, and quality control of the solar cell modules. Secondly, the larger information identification area contributes to improved identification stability and accuracy, even when the solar cell module surface is contaminated, worn, or subject to optical interference, increasing the success rate of identification. In addition, compared to the non-information identification area, the larger information identification area allows for more efficient use of the space occupied by the identification code, improving overall layout efficiency.

[0016] Furthermore, the ratio of the area of ​​the information identification region to the area of ​​the identification code is between 0.2 and 0.9. This allows for a larger information identification region within the identification code, enabling it to carry more encoded information within a limited space, thus increasing its information capacity and facilitating subsequent traceability, management, and quality control of the solar cell modules. Secondly, the larger information identification region contributes to improved stability and accuracy of identification, even when the solar cell module surface is contaminated, worn, or subject to optical interference, thus increasing the success rate of identification. In addition, compared to the non-information identification region, the larger information identification region allows for more efficient use of the space occupied by the identification code, improving overall layout efficiency.

[0017] Furthermore, the ratio of the area of ​​the non-information identification region to the area of ​​the identification code is between 0.1 and 0.8. This allows for a larger information identification region within the identification code, enabling it to carry more encoded information within a limited space, thus increasing its information capacity and facilitating subsequent traceability, management, and quality control of the solar cell modules. Secondly, the larger information identification region contributes to improved identification stability and accuracy, even when the solar cell module surface is contaminated, worn, or subject to optical interference, increasing the success rate of identification. Additionally, compared to the non-information identification region, the larger information identification region allows for more efficient use of the space occupied by the identification code, improving overall layout efficiency.

[0018] Furthermore, the solar cell module includes a first edge, and both the first edge and the identification code extend along a first direction; in a second direction, the distance from the edge of the identification code near the first edge to the first edge is 2mm to 25mm, the first direction is the extension direction of the identification code, and the second direction intersects the first direction. In this way, the cost of the solar cell module can be reduced while the frame of the solar cell module does not obstruct the identification code.

[0019] Furthermore, the ratio of the size of the identification code in the first direction to the size of the identification code in the second direction is greater than or equal to 4, where the first direction is the extension direction of the identification code, and the second direction intersects the first direction. Setting the ratio of the size of the identification code in the first direction to the size of the identification code in the second direction to be greater than or equal to 4 allows for sufficient area for printing information identification areas while preventing the battery module's frame from obscuring the identification code.

[0020] Furthermore, in the thickness direction of the solar cell module, the projection of the identification code onto the first sealing layer and the projection of the solar cell layer onto the first sealing layer overlap in a first region, where the first region satisfies: 0 ≤ W1 ≤ 15 mm; where W1 is the dimension of the first region in a second direction, which intersects the extension direction of the identification code. This reduces the portion of the identification code obscured by the solar cell layer, thereby improving the identification efficiency.

[0021] Furthermore, when the identification code is affixed to the solar cell layer, the solar cell layer includes a second edge located near the identification code, and the adhesive includes a third edge located near the second edge. The second edge, the third edge, and the identification code all extend along a first direction, and the identification code satisfies: 0 ≤ W1 + W2 ≤ W3; where W1 is the dimension of the first region in the second direction, W2 is the distance from the second edge to the third edge in the second direction, and W3 is the dimension of the identification code in the second direction, which intersects the first direction. This allows the solar cell layer and the identification code to completely cover the adhesive in the first direction. This effectively hides the adhesive, preventing bubbles and wrinkles from being visible, thus preserving the appearance of the solar cell module and improving its aesthetics. Simultaneously, it avoids situations where the adhesive is insufficient in the first direction, thus failing to provide sufficient adhesive force to secure the identification code.

[0022] Furthermore, the identification code includes fifth edges located at both ends of the identification code and extending along a second direction, and the adhesive includes sixth edges located at both ends of the identification code and extending along a second direction. The identification code satisfies: 0 ≤ d ≤ 2 / 3L; where d is the distance from one of the fifth edges to the adjacent sixth edge in a first direction, and L is the size of the identification code in the first direction. The identification code extends along the first direction, and the second direction intersects the first direction. This allows the solar cell layer and the identification code to completely cover the adhesive in the second direction, thus hiding the adhesive and preventing bubbles or wrinkles from being exposed, thereby not affecting the appearance of the solar cell module and improving its aesthetics. Simultaneously, it avoids insufficient adhesive force in the first direction, which would prevent the adhesive from failing to provide enough force to fix the identification code. This ensures that after the first cover plate of the module is installed, the frame structure 400 does not obstruct the identification code, facilitating the identification of barcode information.

[0023] Furthermore, the first cover plate covers the battery cell layer through the first sealing layer, and the first cover plate and the identification code satisfy: 2mm≤l1; where l1 is the minimum distance between the projection of the identification code on the first cover plate and the first cover plate in the second direction.

[0024] Furthermore, the identification code includes at least one of barcodes, QR codes, RFID tags, NFC tags, or data matrix codes.

[0025] Furthermore, the adhesive includes at least one of tape, curing adhesive, or electrostatic adsorption film.

[0026] In a second aspect, the present invention provides a photovoltaic system comprising a plurality of solar cell modules as described in any of the first aspects above. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of a photovoltaic system module provided in one embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of a solar cell module provided in one embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of a solar cell module provided in another embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the structure of a solar cell module provided in another embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of a solar cell module provided in another embodiment of the present invention;

[0033] Figure 6 This is a schematic diagram of the structure of the identification code in a solar cell module provided in one embodiment of the present invention;

[0034] Figure 7 This is a schematic diagram of the structure of a solar cell module provided in another embodiment of the present invention;

[0035] Figure 8 This is a schematic diagram of the structure of a solar cell module provided in one embodiment of the present invention;

[0036] Figure 9 This is a schematic diagram of the adhesive structure of the adhesive component in a solar cell module according to an embodiment of the present invention;

[0037] Figure 10 This is a schematic diagram of the structure of a solar cell module provided in another embodiment of the present invention;

[0038] Figure 11 This is a schematic diagram of the structure of a solar cell module provided in another embodiment of the present invention;

[0039] Figure 12 This is a schematic diagram of the structure of a solar cell module provided in another embodiment of the present invention;

[0040] Figure 13 This is a schematic diagram of the structure of a solar cell module provided in another embodiment of the present invention;

[0041] Figure 14 This is a schematic diagram of the structure of a solar cell module provided in another embodiment of the present invention;

[0042] Figure 15 This is a schematic cross-sectional view of a solar cell module provided in one embodiment of the present invention.

[0043] Key component symbols: 1000, Photovoltaic system; 100, Solar cell module; 200, Identification code; 300, Adhesive component; 400, Frame structure; 10, First cover plate; 20, First sealing layer; 30, Cell layer; 40, Second sealing layer; 50, Second cover plate; 101, First edge; 201, End edge; 220, Information identification area; 210, Non-information identification area; 301, Cell; 302, Welding strip; 310, Second edge; 320, Third edge; 230, Fifth edge; 250, First region; 330, Sixth edge. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, and should not be construed as limiting the present utility model. Furthermore, it should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0045] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "top", "bottom", "lateral", "longitudinal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0046] Furthermore, 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0047] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0048] 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.

[0049] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of 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 arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0050] Please see Figure 1 The photovoltaic system 1000 in this embodiment of the present invention may include the solar cell module 100 in this embodiment of the present invention. It should be noted that the accompanying drawings provided in this application are schematic diagrams, and some elements are not shown in the drawings. The purpose is to clearly describe the technical solution and highlight the key points of the utility model. It is not intended to limit the technical solution from including these unshown elements. That is to say, the accompanying drawings are only examples and do not represent a limitation on the specific form of the solar cell module 100.

[0051] in, Figure 13 This diagram shows the projection structure of the identification code 200 on the first cover plate 10. Figures 2 to 12 as well as Figure 14 This shows a schematic diagram of the projection structure of the identification code 200 onto the first sealing layer 20. Furthermore, Figures 2 to 12 as well as Figure 14 All of these are schematic diagrams showing the structure of a solar cell module as viewed from the back side. Figure 13 This is a schematic diagram showing the structure of a solar cell module as viewed from the light-facing side.

[0052] like Figures 2 to 15 As shown, the solar cell module 100 includes a first cover plate 10, a first sealing layer 20, a cell layer 30, a second sealing layer 40, and a second cover plate 50 laminated sequentially. The cell layer 30 includes a plurality of connected cells 301. A frame structure 400 is disposed around the first cover plate 10. An identification code 200 includes an information identification area 220 and a non-information identification area 210. In the thickness direction of the solar cell module 100, the projection of the identification code 200 onto the first sealing layer 20 partially overlaps with the projection of the cell layer 30 onto the first sealing layer 20. The projection of the information identification area 220 onto the first sealing layer 20 at least partially avoids the projection of the cell layer 30 onto the first sealing layer 20.

[0053] In some embodiments, two adjacent solar cells 301 in the solar cell layer 30 may partially overlap or be laid flat; each solar cell 301 is connected by solder ribbons 302 and busbars (not shown). The solder ribbons 302 specifically include positive electrode solder ribbons 302 and negative electrode solder ribbons 302. On the same solar cell 301, the busbar is specifically electrically connected to the solder ribbons of the same polarity, and the busbar is insulated from the solder ribbons 302 of different polarities by insulating strips.

[0054] In this embodiment of the present invention, since the identification code 200 includes an information identification area 220 and a non-information identification area 210, and the projection of the information identification area 220 onto the first sealing layer 20 at least partially avoids the projection of the battery cell layer 30 onto the first sealing layer 20, the information identification area 220 of the identification code 200 is not completely obscured by the battery cell layer 30, so that the information identification area 220 in the identification code 200 can be exposed, thereby enabling the information in the identification code 200 to be effectively identified and improving the identifiability of the identification code 200.

[0055] Moreover, in this embodiment of the invention, since the identification code 200 is not completely set on the adhesive film in the solar cell module 100, and a portion of the identification code 200 is set on the cell layer 30, the phenomenon that the identification code 200, which is completely set on the adhesive film, is prone to shifting during the lamination process can be avoided, thereby improving the setting stability of the identification code 200.

[0056] It is worth noting that in this embodiment, "first direction" refers to the extension direction of the identification code 200. The first direction is also the length direction of the identification code 200. The second direction intersects with the first direction. Specifically, the second direction is perpendicular to the first direction.

[0057] In this embodiment of the utility model, the solar cell module 100 can be a rectangular cell module 301, and the identification code 200 can be set on the long side of the rectangular cell module 301, with the first direction being the same as the extension direction of the long side of the rectangular cell module 301; or, the identification code 200 can also be set on the short side of the rectangular cell module 301, with the first direction being the same as the extension direction of the short side of the rectangular cell module 301.

[0058] Specifically, the solar cell module 100 can be at least one of a back-contact solar cell module 100, a PERC solar cell module 100, and a Topcon solar cell module 100. In this embodiment of the present invention, the solar cell module 100 is specifically described as a back-contact solar cell module 100.

[0059] Furthermore, in one possible implementation, the identification code 200 may include at least one of a barcode, a QR code, an RFID (Radio Frequency Identification) tag, an NFC (Near Field Communication) tag, or a data matrix code. Through the identification code 200, the entire process of the solar cell module 100 can be traced, including all stages such as production, logistics, installation, and use, achieving full-process traceability.

[0060] Furthermore, such as Figures 2 to 14 As shown, the identification code 200 includes an information identification area 220 and a non-information identification area 210 arranged sequentially along a second direction. At least a portion of the projection of the information identification area 220 onto the first sealing layer 20 avoids the projection of the cell layer 30 onto the first sealing layer 20. Specifically, the information identification area 220 of the identification code 200 also stores important information about the solar cell module 100, such as module grade, power, and electrical performance parameters. This information is crucial for module certification, sales, and after-sales service. Furthermore, the information identification area 220 of the identification code 200 can also have anti-counterfeiting functionality. Information about the solar cell module 100 can be identified through the information identification area of ​​the identification code.

[0061] Specifically, the non-information identification area 210 of the identification code 200 is the part of the identification code 200 other than the information identification area 220. The non-information identification area 210 can be completely blank or completely black, and no limitation is made here. No important information of the solar cell module 100 is stored in the non-information identification area 210.

[0062] Therefore, by setting the projection of the information identification area 220 onto the first sealing layer 20 to at least partially avoid the projection of the cell layer 30 onto the first sealing layer 20 in the thickness direction of the solar cell module 100, the information identification area 220 can be made to protrude from the cell layer 30, preventing the barcode from being obscured. This ensures that the information identification area 220 can be clearly seen when viewing the solar cell module 100 from its light-facing surface.

[0063] It is understood that, in the thickness direction of the solar cell module 100, the projection of the information identification area 220 onto the first sealing layer 20 at least partially avoids the projection of the cell layer 30 onto the first sealing layer 20. This means that a portion of the projection of the information identification area 220 onto the first sealing layer 20 can be configured to protrude from the cell layer 30. Alternatively, the entire projection of the information identification area 220 onto the first sealing layer 20 can protrude from the cell layer 30; this is not limited to this arrangement.

[0064] Furthermore, such as Figures 2 to 5 As shown, in the thickness direction of the solar cell module 100, the projection of the identification code 200 onto the first sealing layer 20 partially overlaps with the projection of the cell layer 30 onto the first sealing layer 20. In other words, when viewed from the light-facing side (front) of the solar cell module 100, a portion of the identification code 200 is obscured by the cell layer 30 and cannot be observed.

[0065] Furthermore, in the thickness direction of the solar cell module 100, the projection of the information recognition area 220 onto the first sealing layer 20 at least partially avoids the projection of the cell layer 30 onto the first sealing layer 20. In other words, when viewed from the light-facing side (front) of the solar cell module 100, at least a portion of the information recognition area 220 of the identification code 200 will protrude from the cell layer 30 and will not be obscured by the cell layer 30, and can be observed from the light-facing side of the solar cell module 100.

[0066] It is understandable that the light-facing side of the solar cell module 100 refers to the side of the solar cell module 100 that faces the sunlight when naturally installed. Similarly, the back-facing side of the solar cell module 100 refers to the side of the solar cell module 100 that faces away from the sunlight when naturally installed.

[0067] In related technologies, when the solar cell module 100 is naturally positioned, the identification code 200 is obscured by the cell layer 30, making it impossible to effectively identify the information in the identification code 200. However, in this invention, by setting the identification code 200 to include an information identification area 220 and a non-information identification area 210, and ensuring that the projection of the information identification area 220 onto the first sealing layer 20 at least partially avoids the projection of the cell layer 30 onto the first sealing layer 20 in the thickness direction of the solar cell module 100, the information identification area 220 of the identification code 200 is not completely obscured by the cell layer 30. This allows the information identification area 220 of the identification code 200 to be exposed, thereby enabling the information in the identification code 200 to be effectively identified and improving the identifiability of the identification code 200.

[0068] Furthermore, in the thickness direction of the solar cell module 100, the projection of the identification code 200 onto the first sealing layer 20 overlaps with the projection of the cell layer 30 onto the first sealing layer 20. In this way, a portion of the identification code 200 can be hidden on the back side of the cell layer 30, allowing the identification code 200 to be embedded in the back side of the cell layer 30. This eliminates the need for additional area of ​​the solar cell module 100, thereby reducing the volume of the solar cell module 100 and reducing costs.

[0069] Furthermore, in this embodiment of the invention, by setting the projection of the identification code 200 onto the first sealing layer 20 to at least partially overlap with the projection of the cell layer 30 onto the first sealing layer 20 in the thickness direction of the solar cell module 100, the area of ​​the identification code 200 can be easily increased. This is because since the cell layer 30 itself already occupies the projection area of ​​the second cover plate 50, the overlapping portion of the projection of the identification code 200 and the cell layer 30 can not be considered as an independently occupied area, and therefore can be regarded as the identification code 200 being "hidden" within the projection range of the cell layer 30. After the physical area of ​​the identification code 200 is increased, its projection still overlaps with the cell layer 30, and will not encroach on the available space of other areas of the module, thus facilitating the increase of the area of ​​the identification code 200.

[0070] Furthermore, increasing the area of ​​the identification code 200 can increase the stress of the identification code 200, making it less likely for the identification code 200 to shift after lamination of the solar cell module 100. This can increase the stability of the identification code 200 setting and reduce identification code defects.

[0071] like Figure 14As shown, specifically, the first cover plate 10 is the front cover plate, and the second cover plate 50 is the rear cover plate. Specifically, the solar cell module 100 includes a first sealing layer 20 and a cell layer 30 disposed on the first sealing layer 20. The cell layer 30 can be fixedly disposed on the solar cell module 100 through the first sealing layer 20. The first sealing layer 20 can provide insulation, adhesion and protection functions for the solar cell module 100.

[0072] The solar cell module 100 also includes a second sealing layer 40 and a second cover plate 50. The second cover plate 50 is fixed to the cell layer 30 through the second sealing layer 40. The second sealing layer 40 can provide insulation, adhesion and protection functions for the solar cell module 100.

[0073] In one possible implementation, such as Figures 2 to 5 As shown, in the thickness direction of the solar cell module 100, the projection of the information recognition area 220 onto the first sealing layer 20 at least partially avoids the projection of the cell layer 30 onto the first sealing layer 20.

[0074] It is understandable that, such as Figure 5 As shown, "the projection of the information identification area 220 onto the first sealing layer 20 at least partially avoids the projection of the battery cell layer 30 onto the first sealing layer 20" can mean that the projection of the information identification area 220 onto the first sealing layer 20 partially avoids the projection of the battery cell layer 30 onto the first sealing layer 20. This simplifies the process of setting the identification code 200 and improves production efficiency and yield.

[0075] Specifically, the information recognition area 220 of the identification code 200 does not necessarily need to protrude completely beyond the battery cell layer 30. When setting the identification code 200, the core objective is to ensure that the "effective information portion" carrying key tracking data within the information recognition area 220 (e.g., the data module of a QR code, the key bar / space area of ​​a barcode) can be clearly identified on the side of the first cover plate 10. Therefore, it is not required that the entire physical area of ​​the information recognition area 220 completely avoid the projection obstruction of the battery cell 301. In practice, it is permissible to allow the edges of the information recognition area 220, non-critical areas (e.g., the periphery of the positioning graphic of a QR code, the edge of the quiet zone of a barcode), or a small number of non-core data modules to be covered by the projection portion of the upper battery cell 301. As long as the key effective information portion (i.e., the core area containing actual data content necessary for identification) protrudes beyond the battery cell layer 30, the requirement for reliable identification of the identification code 200 can be met. This significantly reduces the accuracy requirements for the overall or precise positioning of the identification code 200, simplifies the setting process for producing the identification code 200, and improves production efficiency and yield.

[0076] It is understandable that, such as Figures 2 to 4As shown, "the projection of the information recognition area 220 onto the first sealing layer 20 at least partially avoids the projection of the battery cell layer 30 onto the first sealing layer 20" can also mean that the projection of the information recognition area 220 onto the first sealing layer 20 completely avoids the projection of the battery cell layer 30 onto the first sealing layer 20. In this way, the entire information recognition area 220 is unobstructed by the battery cell layer 30, thereby maximizing the recognition effect of the identification code 200.

[0077] In one possible implementation, such as Figure 4 As shown, in the thickness direction of the solar cell module 100, the projection of the non-information identification area 210 onto the first sealing layer 20 overlaps with the projection of the cell layer 30 onto the first sealing layer 20. This allows the information identification area 220 of the identification code 200 to protrude beyond the cell layer 30, ensuring the information identification area 220 is fully exposed while reducing the complexity of the identification code setup process, thus improving production efficiency and yield.

[0078] Understandably, by setting the projection of the non-information recognition area 210 to be partially covered by the upper battery cell 301, a greater positional tolerance margin is provided for the overall placement of the identification code 200. When operators or automated equipment set the identification code 200, it is not necessary to precisely align every edge of the identification code 200 with the gap boundaries of the battery cell 301. This significantly relaxes the requirements for the accuracy of the identification code 200 setting.

[0079] In one possible implementation, such as Figure 3 As shown, in the thickness direction of the solar cell module 100, the projection of the non-information identification area 210 onto the first sealing layer 20 completely overlaps with the projection of the cell layer 30 onto the first sealing layer 20. This ensures that the entire area of ​​the identification code 200 exposed from the cell layer 30 is the information identification area 220, thereby improving the identification efficiency of the identification code 200.

[0080] In one possible implementation, the identification code 200 is affixed to the solar cell layer 30 or the second cover plate 50. This improves the stability of the identification code 200's placement. Specifically, because the solar cell layer 30 and the second cover plate 50 have better stability compared to other components of the solar cell module 100, affixing the identification code 200 to the solar cell layer 30 or the second cover plate 50 makes it less prone to shifting, thereby effectively improving the stability of the identification code 200's placement.

[0081] Furthermore, when the identification code 200 is affixed to the battery cell layer 30, the identification code 200 can be affixed to either the light-facing surface or the back-light-facing surface of the battery cell layer 30, without limitation. In some embodiments, the battery cell layer 30 includes a plurality of back-contact batteries, and the identification code 200 is affixed to the back-light-facing surface of the battery cell layer 30.

[0082] Specifically, such as Figures 12 to 15 As shown, the identification code 200 can be inherently adhesive, allowing it to be attached to the battery cell layer 30 or the second cover plate 50. In other words, the identification code 200 itself has an adhesive function, for example, by using double-sided tape, dispensing adhesive, or electrostatic adsorption. In this case, there is no need for a separate adhesive component 300 to attach the identification code 200. Alternatively, the identification code 200 can also be attached to the battery cell layer 30 or the second cover plate 50 using other components. Alternatively, while the identification code 200 itself is adhesive, other components of the identification code 200 can be further attached to the battery cell layer 30 or the second cover plate 50. No limitations are imposed here.

[0083] like Figures 2 to 14 As shown, the solar cell module 100 also includes an adhesive strip 300, which is connected to the identification code 200. The adhesive strip 300 is used to attach the identification code 200 to the cell layer 30 or the second cover plate 50. In this way, the stability of the identification code 200 can be further improved by setting the adhesive strip 300.

[0084] Specifically, the adhesive component 300 can be a standalone adhesive device. In one possible implementation, the adhesive component 300 includes at least one of adhesive tape, curing adhesive, or electrostatic adsorption film. Specifically, the adhesive component 300 can fix the identification code 200 and the battery cell layer 30 or the second cover plate 50 by adhesive means.

[0085] Furthermore, the light transmittance of the adhesive component 300 can be set to be greater than 90%. That is, the adhesive component 300 is specifically a transparent component. In this way, the adhesive component 300 can fix the identification code 200 while ensuring that the solar cells in the cell layer 30 are not blocked by the identification code 200, thereby improving the efficiency of the solar cell module 100.

[0086] It is worth noting that when there are multiple battery cells 301 in the battery cell layer 30, the adhesive 300 can be placed on the side of the battery cell 301 closest to the edge of the battery cell layer 30 that faces away from the first sealing layer 20.

[0087] In some embodiments, both the identification code 200 and the adhesive component 300 may have adhesive surfaces, and the adhesive surface of the identification code 200 may become sticky after heating. Specifically, the identification code 200 may be configured such that the side facing the adhesive component 300 is an adhesive surface, while the side facing away from the adhesive component 300 is a non-adhesive surface; alternatively, both the top and bottom surfaces of the identification code 200 may be adhesive surfaces to further prevent the identification code 200 from shifting, thereby further improving the fixing stability and durability of the identification code.

[0088] like Figure 2 and Figure 3 As shown, the number of adhesive pieces 300 can be one or more, without limitation. For example, when there is only one adhesive piece 300, it can be a long strip-shaped adhesive piece 300. For example, when there are multiple adhesive pieces, the identification code 200 can be fixed by multiple smaller adhesive pieces 300.

[0089] In one possible implementation, in the thickness direction of the solar cell module 100, the projection of the adhesive 300 onto the first sealing layer 20 is completely covered by the projections of the identification code 200 and the cell layer 30 onto the first sealing layer 20. This effectively hides the adhesive 300, preventing bubbles and wrinkles from being exposed, thus preserving the appearance of the solar cell module 100 and improving its aesthetics.

[0090] Specifically, in the thickness direction of the solar cell module 100, the cell layer 30 and the identification code 200 completely cover the adhesive component 300. This means that when viewing the solar cell module 100 from its light-facing surface, the adhesive component 300 is completely covered by the cell layer 30 and the identification code 200, and the adhesive component 300 is not visible.

[0091] Understandably, due to the material of the adhesive component 300, especially when it is tape, air bubbles and wrinkles will inevitably appear on the adhesive component 300 during or after the identification code 200 is applied. Therefore, in related technologies, the adhesive component 300 is designed to protrude from the cell layer 30 and / or the identification code 200. This design causes air bubbles and wrinkles on the adhesive component 300 to affect the appearance of the solar cell module 100, thereby reducing the aesthetics of the solar cell module.

[0092] Therefore, in this embodiment of the present invention, the cell layer 30 and the identification code 200 are arranged to completely cover the adhesive 300 in the thickness direction of the solar cell module 100, thereby hiding the adhesive 300 and preventing bubbles and wrinkles from being exposed, thus not affecting the appearance of the solar cell module 100 and improving the aesthetics of the solar cell module.

[0093] In one possible implementation, please refer to [reference needed]. Figure 6 The area of ​​the information identification region 220 is larger than the area of ​​the non-information identification region 210. This allows the identification code 200 to carry more encoded information within a limited space, increasing its information capacity and facilitating subsequent traceability, management, and quality control of the solar cell module 100. Secondly, the larger information identification region 220 in the identification code 200 helps improve the stability and accuracy of identification, even when the surface of the solar cell module 100 has some contamination, wear, or optical interference, thus increasing the success rate of identification. Furthermore, compared to the non-information identification region 210, the larger information identification region 220 can more effectively utilize the area occupied by the identification code 200, improving the overall layout efficiency.

[0094] Furthermore, the area ratio of the information identification area 220 to the non-information identification area 210 is between 0.25 and 9. This allows the identification code 200 to carry more encoded information within a limited space, increasing its information capacity and facilitating subsequent traceability, management, and quality control of the solar cell module 100. Secondly, the larger information identification area 220 in the identification code 200 helps improve the stability and accuracy of identification, even when the surface of the solar cell module 100 has some contamination, wear, or optical interference, thus increasing the success rate of identification. In addition, compared to the non-information identification area 210, the larger information identification area 220 can more effectively utilize the area occupied by the identification code 200, improving the overall layout efficiency.

[0095] In one possible implementation, please refer to [reference needed]. Figure 6The ratio of the area of ​​the information identification region 220 to the area of ​​the identification code 200 is 0.2 to 0.9. For example, ratios are 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.52, 0.55, 0.58, 0.6, 0.62, 0.65, 0.7, 0.75, 0.8, 0.85, and 0.9. This allows for a larger information identification region 220 within the identification code 200, enabling it to carry more encoded information within a limited space, thus increasing its information capacity and facilitating subsequent traceability, management, and quality control of the solar cell module 100. Furthermore, the larger information identification region 220 in the identification code 200 helps improve the stability and accuracy of identification, even when the surface of the solar cell module 100 is contaminated, worn, or subject to optical interference, thereby increasing the success rate of identification. In addition, compared to the non-information recognition area 210, the larger information recognition area 220 can make more effective use of the area occupied by the identification code 200, thereby improving the overall layout efficiency.

[0096] In one possible implementation, please refer to [reference needed]. Figure 6 The ratio of the area of ​​the non-information identification area 210 to the area of ​​the identification code 200 is between 0.1 and 0.8. For example, ratios are 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.48, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, and 0.8. This allows for a larger information identification area 220 within the identification code 200, enabling it to carry more encoded information within a limited space, thus increasing its information capacity and facilitating subsequent traceability, management, and quality control of the solar cell module 100. Furthermore, the larger information identification area 220 in the identification code 200 helps improve the stability and accuracy of identification, even when the surface of the solar cell module 100 is contaminated, worn, or subject to optical interference, thereby increasing the success rate of identification. In addition, compared to the non-information recognition area 210, the larger information recognition area 220 can make more effective use of the area occupied by the identification code 200, thereby improving the overall layout efficiency.

[0097] like Figure 6 As shown, in one possible implementation, the ratio of the dimension L of the identification code 200 in the first direction to the dimension W3 of the identification code 200 in the second direction is greater than or equal to 4, for example, 4, 5, 6, 7, 8, 9, or 10. The first direction is the extension direction of the identification code 200, and the second direction intersects the first direction. Specifically, the dimension L of the identification code 200 in the first direction can be the length dimension of the identification code, and the dimension W3 of the identification code in the second direction can be the width dimension of the identification code.

[0098] Understandably, due to the limitations of the frame structure 400 of the solar cell module 100, the gap between the frame structure 400 and the identification code 200 is limited. Therefore, the width of the identification code 200, i.e., its size in the second direction, cannot be too large. Simultaneously, the identification code 200 also needs sufficient length to print the information identification area 220. Therefore, setting the ratio of the size L of the identification code 200 in the first direction to its size W3 in the second direction to be greater than or equal to ensure that the identification code 200 has sufficient area to print the information identification area 220 while preventing the frame structure 400 of the battery module from obscuring the identification code 200.

[0099] like Figure 7 As shown, in one possible implementation, the solar cell module 100 includes a first edge 101, and both the first edge 101 and the identification code 200 extend along a first direction. In a second direction, the distance K from the edge of the identification code 200 near the first edge 101 to the first edge 101 is 2mm to 25mm. The first direction is the extension direction of the identification code, and the second direction intersects the first direction. For example, in the second direction, the distance K from the edge of the identification code 200 near the first edge 101 to the first edge 101 can be 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 15mm, 18mm, 20mm, 22mm, or 25mm. In this way, the cost of the solar cell module 100 can be reduced while the frame structure 400 of the solar cell module 100 does not obstruct the identification code 200.

[0100] It can be understood that, in the second direction, the distance from the edge of the identification code 200 near the first edge 101 to the first edge 101 cannot be too small. When the distance K is less than 2mm, the frame structure 400 of the solar cell module 100 will obstruct the identification code 200, preventing the user from effectively identifying it. Therefore, the frame structure 400 of the solar cell module 100 needs to have sufficient clearance with the identification code 200 to avoid obstructing it. Furthermore, in the second direction, the distance K from the edge of the identification code 200 near the first edge 101 to the first edge 101 cannot be too large. When the distance K is greater than 15mm, the gap between the frame structure 400 of the solar cell module 100 and the identification code 200 will be too large, reducing the space utilization of the solar cell module 100 and increasing its cost.

[0101] like Figure 8 and 9 As shown, in one possible implementation, in the thickness direction of the solar cell module 100, the projection of the identification code 200 onto the first sealing layer 20 overlaps with the projection of the cell layer 30 onto the first sealing layer 20 in a first region 250, where the first region 250 satisfies: 0 ≤ W1 ≤ 15 mm; where W1 is the dimension of the first region 250 in a second direction, which intersects the extension direction of the identification code 200. For example, W1 can be 0, 0.5 mm, 1 mm, 2 mm, 3 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, or 15 mm. This reduces the portion of the identification code 200 obscured by the cell layer 30, thereby improving the identification efficiency of the identification code 200.

[0102] It can be understood that, in the thickness direction of the solar cell module 100, the projection of the identification code 200 onto the first sealing layer 20 and the projection of the cell layer 30 onto the first sealing layer 20 overlap in the first region 250. The size W1 of the first region 250 in the second direction cannot be too large. When the size W1 of the first region 250 in the second direction is greater than 15, the portion of the identification code 200 protruding from the cell layer 30 will be smaller, resulting in a larger portion of the identification code 200 being blocked by the cell layer 30, which will reduce the identification efficiency of the identification code 200.

[0103] like Figure 8 and 9 As shown, in one possible implementation, when the identification code 200 is affixed to the solar cell layer 30, the solar cell layer 30 includes a second edge 310 located near the identification code 200, and the adhesive 300 includes a third edge 320 located near the second edge 310. The second edge 310, the third edge 320, and the identification code 200 all extend along a first direction, and the identification code 200 satisfies: 0 ≤ W1 + W2 ≤ W3; where W1 is the dimension of the first region 250 in the second direction, W2 is the distance from the second edge 310 to the third edge 320 in the second direction, and W3 is the dimension of the identification code 200 in the second direction. The second direction intersects the first direction. In this way, the solar cell layer 30 and the identification code 200 can completely cover the adhesive 300 in the first direction. This effectively hides the adhesive 300, preventing bubbles and wrinkles from being exposed, thus not affecting the appearance of the solar cell module 100 and improving the aesthetics of the solar cell module. At the same time, it can also avoid the situation where the size of the adhesive 300 is insufficient in the first direction, thus failing to provide sufficient adhesive force to fix the identification code 200.

[0104] like Figure 10 and Figure 11As shown, in one possible implementation, the identification code 200 includes end edges 201 located at both ends of the identification code 200 and extending along a second direction. The identification code 200 satisfies: 0 ≤ d ≤ 2 / 3L; where d is the minimum distance from one end edge 201 of the identification code 200 to the adhesive 300 in the first direction, and L is the dimension of the identification code 200 in the first direction. The identification code 200 extends along the first direction, and the second direction intersects the first direction. This allows the solar cell layer 30 and the identification code 200 to completely cover the adhesive 300 in the second direction, thereby concealing the adhesive 300 and preventing bubbles or wrinkles from being exposed, thus not affecting the appearance of the solar cell module 100 and improving its aesthetics. Simultaneously, it also avoids the situation where the adhesive 300 is insufficient in size in the first direction, thus failing to provide sufficient adhesive force to fix the identification code 200. Specifically, the end edges 201 of the identification code 200 are the boundary lines of the identification code 200 located at both ends of the identification code 200.

[0105] It is understandable that, such as Figure 10 As shown, when the number of adhesive pieces 300 is one, d is the minimum distance from one end edge 201 of the identification code 200 to the adhesive piece 300 in the first direction, that is, the distance from one end edge 201 of the identification code 200 to the end of the adhesive piece 300 in the first direction.

[0106] It is understandable that, such as Figure 11 As shown, when there are multiple adhesive pieces 300, d is the minimum distance from one end edge 201 of the identification code 200 to the adhesive piece 300 in the first direction, that is, the distance from one end edge 201 of the identification code 200 to the end of the adhesive piece 300 closest to that end edge 201 in the first direction.

[0107] like Figure 12 and Figure 13 As shown, in one possible implementation, the first cover plate 10 covers the battery cell layer 30 through the first sealing layer 20. The first cover plate 10 and the identification code 200 satisfy: 2mm≤l1; where l1 is the minimum distance between the projection of the identification code 200 on the first cover plate 10 and the first cover plate 10 in the second direction. The identification code 200 extends along the first direction, and the second direction intersects the first direction.

[0108] It is understandable that the minimum distance l1 between the projection of the identification code 200 onto the first cover plate 10 and the first cover plate 10 in the second direction is, in the second direction, the distance between the edge of the identification code 200 near the first cover plate 10 and the edge of the first cover plate 10 closest to the identification code 200 in the projection of the identification code 200 onto the first cover plate 10.

[0109] Therefore, setting 2mm≤l1 ensures that after the first cover plate 10 is installed, the frame structure 400 does not obstruct the identification code 200, so as to facilitate the identification of barcode information.

[0110] It is understandable that the frame structure 400 can be a conventional frame structure 400 or a dust-proof frame structure 400.

[0111] This ensures that after the battery assembly is installed in the frame structure 400, the frame structure 400 will not obstruct the identification code 200, so as to facilitate the identification of barcode information.

[0112] It is understandable that the difference between the anti-dust accumulation frame structure 400 and the conventional frame structure 400 is that the anti-dust accumulation frame structure 400 has a better dustproof effect. Specifically, the anti-dust accumulation frame structure 400 can be one of the frame structures 400 disclosed in the following publication numbers, and is not limited here: CN222928341U, CN309075879S, CN309075879S.

[0113] In one possible implementation, the materials of the first sealing layer 20 and the second sealing layer 40 can be different from the material of the identification code 200. This increases the flexibility of the solar cell module 100 in terms of material application; simultaneously, different materials can reduce the probability of poor adhesion (such as bubbling or warping), ensuring the quality of the solar cell module 100.

[0114] Specifically, the materials of the first sealing layer 20 and the second sealing layer 40 can be different from the material of the adhesive component 300. This can further improve the flexibility of the solar cell module 100 in terms of the materials used; at the same time, it can further reduce the probability of poor adhesion (such as bubbling and warping), thus ensuring the quality of the solar cell module 100.

[0115] Specifically, in one possible implementation, the adhesive element 300 can be a PET (polyethylene terephthalate) adhesive element 300 or a PE (polyethylene) adhesive element 300. PET material has excellent mechanical properties, possessing high strength and good toughness, providing reliable adhesive strength and tear resistance to improve the adhesiveness of the adhesive element 300, thereby further enhancing the stability and firmness of the identification code 200. PE material has good corrosion resistance, which can improve the stability of the identification code 200's placement.

[0116] Specifically, in one possible implementation, the first sealing layer 20 and the second sealing layer 40 can be one of EVA (ethylene-vinyl acetate copolymer) film, EPE (polyethylene foam) film, POE (polyolefin elastomer) film, PVB (polyvinyl butyral) film, TPO (thermoplastic polyolefin) film, and TPU (thermoplastic polyurethane) film. Preferably, the film can be made of EVA material. The material of the film can be optimized according to the usage environment, performance requirements, and cost budget of the solar cell module 100, and is not limited here.

[0117] In one possible implementation, the heat distortion temperature of the adhesive 300 is greater than 100 degrees Celsius. This ensures that the adhesive 300 maintains stability during the lamination process of the photovoltaic module. The adhesive 300 remains adhesive even in high-temperature environments, preventing the identification code 200 from shifting position and ensuring the stability and secure placement of the identification code 200.

[0118] It is worth noting that "heat distortion temperature of adhesive part 300" refers to the highest temperature at which adhesive part 300 remains stable without melting under high temperature conditions. That is, adhesive part 300 will begin to melt, and its adhesive strength or deformation will occur when it is exposed to an environment above its heat distortion temperature.

[0119] Specifically, since the solar cell module 100 generates a lot of heat during lamination, the adhesive 300 needs to be able to withstand the high temperature environment during lamination to avoid losing its adhesive strength or deforming at high temperatures, thereby ensuring the stable fixation of the identification code 200.

[0120] In other embodiments, the performance of the adhesive 300 can be enhanced by filling the adhesive 300 with material or adding composite material. For example, the adhesive 300 may include a glass fiber reinforced material layer or a metal fiber layer to significantly improve the temperature resistance of the adhesive 300, enabling the adhesive 300 to operate stably at higher temperatures, thereby ensuring that the position of the identification code 200 does not shift and that the overall structure of the solar cell module 100 is not affected.

[0121] Furthermore, in one possible implementation, the melting point of the adhesive component 300 is greater than that of the adhesive film. This ensures that the adhesive component 300 will not melt due to heat during the adhesive film application process, thereby improving the thermal stability of the adhesive component 300.

[0122] Furthermore, in one possible implementation, the adhesive component 300 is a fluorescent adhesive component 300. This allows for clear identification of the adhesive component 300's location, enabling operators to quickly and accurately install it and preventing misalignment. Simultaneously, the fluorescent nature of the adhesive component 300 provides clear identification, avoiding misoperation or incorrect positioning in high-temperature environments, further ensuring the reliability and safety of the photovoltaic module.

[0123] For example, fluorescent dyes or pigments can be added during the manufacturing process of the adhesive part 300. These dyes or pigments can make the adhesive part 300 fluoresce, providing a noticeable visual effect. The adhesive part 300 can be yellow, green, or orange, etc.

[0124] For example, the adhesive component 300 may include a fluorescent coating. This fluorescent coating is typically composed of a combination of a heat-resistant resin and a fluorescent pigment. The fluorescent coating can cover the surface of the adhesive component 300, providing a fluorescent effect to the adhesive component 300.

[0125] Furthermore, regarding the detection method for the adhesive component 300, the solar cell module 100 can be cut open from the edge of the cell layer 30. Because the adhesive component 300 and the adhesive film are made of different materials, the components near the identification code 200 in the solar cell module 100 can be detected to identify the adhesive component 300.

[0126] Of course, for the fluorescent adhesive 300, after the solar cell module 100 is cut from the edge of the cell layer 30, the adhesive 300 can be detected by using a fluorescence microscope.

[0127] In the description of this specification, the references to terms such as "some embodiments," "illustrative embodiments," "examples," "specific examples," 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 this application. 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.

[0128] Furthermore, the above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A solar cell module, characterized by, include: The first cover plate, the first sealing layer, the battery cell layer, the second sealing layer, and the second cover plate are laminated in sequence, wherein the battery cell layer includes a plurality of connected battery cells; A frame structure is located around the first cover plate; The identification code includes an information identification area and a non-information identification area. In the thickness direction of the solar cell module, the projection of the identification code on the first sealing layer partially overlaps with the projection of the cell layer on the first sealing layer, and the projection of the information identification area on the first sealing layer at least partially avoids the projection of the cell layer on the first sealing layer.

2. The solar cell module according to claim 1, characterized by In the thickness direction of the solar cell module, the projection of the non-information identification area onto the first sealing layer partially overlaps with the projection of the cell layer onto the first sealing layer.

3. The solar cell module according to claim 1, characterized by, In the thickness direction of the solar cell module, the projection of the non-information identification area onto the first sealing layer completely overlaps with the projection of the cell layer onto the first sealing layer.

4. The solar cell module according to claim 1, characterized by In the thickness direction of the solar cell module, the projection of the information recognition area onto the first sealing layer completely avoids the projection of the cell layer onto the first sealing layer.

5. The solar cell module according to claim 1, characterized by, The identification code is affixed to the battery cell layer or the second cover plate.

6. The solar cell module according to claim 1, wherein It also includes an adhesive component connected to the identification code, which is used to attach the identification code to the battery cell layer or the second cover plate.

7. The solar cell module according to claim 6, characterized by In the thickness direction of the solar cell module, the projection of the adhesive on the first sealing layer is completely covered by the identification code and the projection of the cell layer on the first sealing layer.

8. The solar cell module according to claim 6, wherein The number of adhesive pieces can be one or more.

9. The solar cell module according to claim 1, characterized by, The area of ​​the information recognition region is larger than the area of ​​the non-information recognition region.

10. The solar cell module according to claim 1, characterized by, The area ratio of the information identification area to the non-information identification area is between 0.25 and 9.

11. The solar cell module according to claim 1, characterized by, The ratio of the area of ​​the information recognition region to the area of ​​the identification code is 0.2 to 0.

9.

12. The solar cell module according to claim 1, characterized by, The ratio of the area of ​​the non-information identification region to the area of ​​the identification code is 0.1 to 0.

8.

13. The solar cell module according to claim 1, characterized by, The solar cell module includes a first edge, and both the first edge and the identification code extend along a first direction; In the second direction, the distance from the edge of the identification code near the first edge to the first edge is 2mm to 25mm, the first direction is the extension direction of the identification code, and the second direction intersects the first direction.

14. The solar cell module according to claim 1, characterized by, The ratio of the size of the identification code in the first direction to the size of the identification code in the second direction is greater than or equal to 4, the first direction is the extension direction of the identification code, and the second direction intersects the first direction.

15. The solar cell module according to claim 6, characterized by, In the thickness direction of the solar cell module, the projection of the identification code onto the first sealing layer and the projection of the cell layer onto the first sealing layer overlap in a first region, the first region satisfying: 0≤W1≤15mm; where W1 is the size of the first region in a second direction, the second direction intersecting the extension direction of the identification code.

16. The solar cell module according to claim 15, characterized by When the identification code is affixed to the battery cell layer, the battery cell layer includes a second edge located near the identification code, and the adhesive includes a third edge located near the second edge. The second edge, the third edge, and the identification code all extend along a first direction, and the identification code satisfies the following: 0≤W1+W2≤W3; Wherein, W1 is the size of the first region in the second direction, W2 is the distance from the second edge to the third edge in the second direction, and W3 is the size of the identification code in the second direction, the second direction intersecting the first direction.

17. The solar cell module according to claim 6, characterized by, The identification code includes a fifth edge located at both ends of the identification code and extending along a second direction, and the adhesive includes a sixth edge located at both ends of the identification code and extending along a second direction. The identification code satisfies: 0 ≤ d ≤ 2 / 3L; where d is the distance from one of the fifth edges to the adjacent sixth edge in a first direction, and L is the size of the identification code in the first direction. The identification code extends along the first direction, and the second direction intersects the first direction.

18. The solar cell module according to claim 1, characterized in that, The first cover plate covers the battery cell layer through the first sealing layer, and the first cover plate and the identification code satisfy: 2mm≤l1; Wherein, l1 is the minimum distance between the projection of the identification code onto the first cover plate and the first cover plate in the second direction.

19. The solar cell module according to claim 1, characterized in that, The identification code includes at least one of barcode, QR code, RFID tag, NFC tag, or data matrix code.

20. The solar cell module according to claim 6, characterized by, The adhesive includes at least one of tape, curing adhesive, or electrostatic adsorption film.

21. A photovoltaic system characterized by, It includes several solar cell modules as described in any one of claims 1 to 20.

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