Glue injection head, mounting structure and photovoltaic module
By designing a dispensing head with multiple dispensing nozzles, three-sided bonding and encapsulation of photovoltaic modules is achieved, solving the problems of poor sealing and overflow, reducing costs and improving module reliability and appearance quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIAXING LONGJI LEYE PHOTOVOLTAIC TECH CO LTD
- Filing Date
- 2025-05-06
- Publication Date
- 2026-06-19
AI Technical Summary
In the assembly process of existing photovoltaic modules, uneven application of sealant leads to poor sealing, increases manual cleaning costs and poses reliability risks, and sealant overflow affects the appearance of the module.
Design a dispensing head with multiple dispensing ports that can simultaneously dispense sealant onto the bottom and two sides of a photovoltaic module while applying sealant, forming a three-sided bonded encapsulation, reducing the amount of sealant used and improving sealing reliability.
By using three-sided lamination encapsulation, the cost of sealant and manual cleaning is reduced, the appearance of the module is optimized, and the sealing reliability and service life of the module are improved.
Smart Images
Figure CN224371879U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of photovoltaic module processing and manufacturing technology, and in particular relates to a glue injection head, an installation structure, and a photovoltaic module. Background Technology
[0002] In the assembly process of photovoltaic (PV) module laminates and frames, the frame is used to fix the laminates, serving to secure and seal the PV modules, enhance their strength, and extend their lifespan. Before assembly, sealant needs to be applied to the mounting grooves in the frame.
[0003] Currently, to achieve sealant application, a single-sided dispensing head is commonly used. This head applies sealant to the bottom of the mounting groove on the frame, while the sealant on both sides of the mounting groove is formed by compression during lamination and frame assembly. If too much sealant is present in the mounting groove, it will overflow onto the front of the photovoltaic module, creating secondary contamination that requires manual cleaning and increases labor costs. Conversely, if too little sealant is present, there will be a gap between the laminate and the mounting groove, resulting in poor sealing and posing a risk of reliability failure during long-term product use. Utility Model Content
[0004] This application provides a dispensing head, mounting structure, and photovoltaic module, which improves the sealing performance of the photovoltaic module, reduces costs, and helps optimize the appearance of the photovoltaic module.
[0005] In a first aspect, this application provides a dispensing head for use in a photovoltaic module and includes a main body; and a nozzle connected to the main body, wherein the nozzle includes a bottom wall spaced apart from the main body in a first direction and a side wall disposed between the bottom wall and the main body. The bottom wall is provided with a first dispensing port, and the side wall is provided with a second dispensing port and a third dispensing port disposed opposite each other in a second direction, wherein the first direction is perpendicular to the second direction.
[0006] In some practical examples, the ratio between the opening area of the second injection port and the opening area of the first injection port is (1-2):(2-4).
[0007] In some practical examples, the opening area of the third injection port is larger than the opening area of the second injection port.
[0008] In some practical examples, the ratio between the opening area of the third injection port and the opening area of the first injection port is (5-9):(2-4).
[0009] In some practical examples, in the first direction, at least a portion of the outer surface of the bottom wall is recessed inward to form a first groove, and the first injection port is disposed in the first groove.
[0010] In some practical examples, in the second direction, a portion of the outer surface of the sidewall is recessed inward to form a second groove, and the second injection port is disposed in the second groove.
[0011] In some practical examples, in the second direction, a portion of the outer surface of the sidewall is recessed inward to form a third groove, and the third injection port is disposed in the third groove.
[0012] In some practical examples, one end of the second injection port in the first direction extends to the bottom wall or is spaced apart from the bottom wall.
[0013] In some practical examples, one end of the third injection port in the first direction extends to the bottom wall or is spaced apart from the bottom wall.
[0014] In some practical examples, in the first direction, the cross-sectional area of the second injection port is arranged to increase sequentially from the gun head toward the body.
[0015] In some practical examples, in the first direction, the cross-sectional area of the third injection port is arranged to increase sequentially from the gun head toward the body.
[0016] In some practical examples, the first injection port is a rectangular structure.
[0017] In a second aspect, this application provides an installation structure including a frame with an opening facing a third direction. The installation groove has a first inner wall surface opposite to its opening and a second and a third inner wall surface opposite to each other in a fourth direction. A first adhesive is disposed on the first inner wall surface, a second adhesive is disposed on the second inner wall surface, and a third adhesive is disposed on the third inner wall surface. The first, second, and third adhesives are extruded through a first, second, and third injection port on the aforementioned dispensing head.
[0018] In some practical examples, the distance between the highest point of the second colloid in its thickness direction and the end of the second inner wall surface facing away from the first inner wall surface in the third direction is L1, and the distance between the highest point and the end of the second inner wall surface facing the first inner wall surface in the third direction is L2, where L1 is less than L2.
[0019] In some practical examples, the distance between the highest point of the third colloid in its thickness direction and the end of the third inner wall surface opposite to the first inner wall surface in the third direction is L3, and the distance between the highest point and the end of the third inner wall surface near the first inner wall surface in the third direction is L4, where L3 is less than L4.
[0020] In some practical examples, the thickness of the first colloid is set to be thin at both ends and thick in the middle in the fourth direction, the thickness of the second colloid is set to be thin at both ends and thick in the middle in the third direction, and the thickness of the third colloid is set to be thin at both ends and thick in the middle in the third direction.
[0021] In some practical examples, the thickness of the first colloid is set to be thin at both ends and thick in the middle in the fourth direction, the thickness of the second colloid is set to decrease sequentially from the opening end of the mounting groove toward the first inner wall surface in the third direction, and the thickness of the third colloid is set to decrease sequentially from the opening end of the mounting groove toward the first inner wall surface in the third direction.
[0022] In a third aspect, this application provides a photovoltaic module, which includes a laminate and the mounting structure described above. The laminate is installed in the mounting groove and is sealed to the inner wall of the mounting groove through the first colloid, the second colloid and the third colloid.
[0023] In some practical examples, the second colloid and the third colloid are spaced apart from the first colloid.
[0024] In some practical examples, at least one of the second colloid and the third colloid is integrally connected with the first colloid.
[0025] In summary, the dispensing head, mounting structure, and photovoltaic module provided in this application have at least the following beneficial effects:
[0026] Since the glue injection head has a first glue injection port on its bottom wall and a second glue injection port and a third glue injection port on its side wall, when injecting glue into the mounting groove of the mounting structure using the glue injection head, the first glue injection port on the gun head can be used to inject sealant into the bottom surface of the mounting groove (i.e., side B of the frame), and the second and third glue injection ports can be used to inject sealant into the two sides of the mounting groove (i.e., sides A and C of the frame). Therefore, based on the design of the second and third injection ports, a certain amount of sealant can be injected into both sides of the mounting groove simultaneously with the injection of sealant into the bottom surface of the mounting groove. When the laminate is embedded into the mounting groove of the mounting structure, the sealant on each inner wall surface is squeezed and flows under the action of the laminate, allowing the laminate to form a three-sided bond within the mounting groove. Compared to injecting the sealant entirely into the bottom of the mounting groove, this approach reduces the amount of sealant used, preventing sealant overflow onto the front of the photovoltaic module and causing secondary contamination. This not only reduces the cost of sealant and manual cleaning but also helps optimize the appearance of the photovoltaic module. Furthermore, the three-sided bond significantly improves the sealing reliability between the laminate and the frame, preventing moisture damage to the photovoltaic module during outdoor operation. This ensures the long-term reliability and extended service life of the photovoltaic module. Attached Figure Description
[0027] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application; those skilled in the art can obtain other drawings based on these drawings without any creative effort.
[0028] Figure 1 This is a schematic diagram of the frame structure of a photovoltaic module provided in an embodiment of this application;
[0029] Figure 2 A three-dimensional structural diagram of the first type of dispensing head provided in the embodiments of this application from one perspective;
[0030] Figure 3 A three-dimensional structural diagram of the first type of dispensing head provided in an embodiment of this application, viewed from another perspective;
[0031] Figure 4 A three-dimensional structural diagram of the first type of dispensing head provided in the embodiments of this application from another perspective;
[0032] Figure 5 This is a three-dimensional structural diagram of the second type of dispensing head provided in the embodiments of this application from one perspective;
[0033] Figure 6A three-dimensional structural diagram of the second type of dispensing head provided in an embodiment of this application, viewed from another perspective;
[0034] Figure 7 A three-dimensional structural diagram of the second type of dispensing head provided in an embodiment of this application from another perspective;
[0035] Figure 8 This is a schematic diagram of the first installation structure provided in the embodiments of this application, wherein the first colloid, the second colloid, and the third colloid of the installation structure are extruded and formed by the first dispensing head provided in the embodiments of this application;
[0036] Figure 9 This is a schematic diagram of the second installation structure provided in the embodiments of this application, wherein the first colloid, the second colloid, and the third colloid of the installation structure are extruded and formed by the first dispensing head provided in the embodiments of this application;
[0037] Figure 10 This is a schematic diagram of the third installation structure provided in the embodiments of this application, wherein the first colloid, the second colloid, and the third colloid of the installation structure are extruded and formed by the second dispensing head provided in the embodiments of this application;
[0038] Figure 11 This is a schematic diagram of the fourth installation structure provided in the embodiments of this application, wherein the first colloid, the second colloid, and the third colloid of the installation structure are extruded and formed by the second dispensing head provided in the embodiments of this application;
[0039] Figure 12 This is a schematic diagram of the structure of a first type of photovoltaic module provided in the embodiments of this application;
[0040] Figure 13 This is a schematic diagram of the structure of a second type of photovoltaic module provided in an embodiment of this application.
[0041] The attached figures are labeled as follows:
[0042] 1000. Photovoltaic modules;
[0043] 100. Mounting structure; 110. Frame; 111. First inner wall surface; 112. Second inner wall surface; 113. Third inner wall surface; 120. First adhesive; 130. Second adhesive; 140. Third adhesive; F. Body; E. Mounting groove; G. Glue overflow groove;
[0044] 200. Laminated components;
[0045] 300. Injection head; 10. Main body; 20. Gun head; 21. Bottom wall; 22. Side wall; 221. First wall section; 222. Second wall section; 223. Third wall section; A1. First injection port; A2. Second injection port; A3. Third injection port;
[0046] X1, first direction; Y1, second direction; X2, third direction; Y2, fourth direction. Detailed Implementation
[0047] To make the above and other features and advantages of this application clearer, the present invention will be further described below with reference to the accompanying drawings. It should be understood that the specific embodiments given herein are for the purpose of explanation to those skilled in the art and are exemplary only, not restrictive.
[0048] Furthermore, features specified with "first" or "second" for descriptive purposes only should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Features specified with "first" or "second" may explicitly or implicitly include at least one of the specified features. The description of "multiple" generally means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0049] The photovoltaic module provided in this application embodiment includes a laminate 200 and a mounting structure 100 for mounting the laminate 200. (Refer to...) Figure 1 The photovoltaic module mounting structure 100 includes a frame 110, which includes a body F and a mounting groove E disposed on one side of the body F in the fourth direction Y2. The opening of the mounting groove E faces the third direction X2, and the mounting groove E has a first inner wall surface 111 opposite to its opening and a second inner wall surface 112 and a third inner wall surface 113 disposed opposite to each other in the fourth direction Y2.
[0050] Specifically, the second inner wall surface 112 is the inner wall surface away from the body F in the fourth direction Y2, while the third inner wall surface 113 is the inner wall surface close to the body F in the fourth direction Y2. Furthermore, an overflow groove G may be provided on the second inner wall surface 112 to collect sealant overflowing from the mounting groove E.
[0051] It should be noted that, in this technical field, the first inner wall surface 111 is the bottom surface of the mounting groove E, commonly referred to as the B surface of the frame 110, the second inner wall surface 112 and the third inner wall surface 113 are the sides of the mounting groove E, and the second inner wall surface 112 is referred to as the A surface of the frame 110, and the third inner wall surface 113 is referred to as the C surface of the frame 110. Therefore, the following description will use the A surface, B surface, and C surface.
[0052] Additionally, it is understandable that the third direction X2 is the direction in which the opening of the mounting slot E is located, while the fourth direction Y2 is the direction in which the A and C surfaces of the frame 110 are opposite and perpendicular to the third direction X2.
[0053] The dispensing head 300 provided in this application is used to apply adhesive to the frame of a photovoltaic module. Specifically, during the assembly of the photovoltaic module, the dispensing head 300 of this application is used to first extrude a certain shape and a certain amount of sealant (such as silicone) into the mounting groove E of the frame 110. Then, the laminate 200 is installed into the mounting groove E of the frame 110. During the installation process, the laminate 200 will squeeze the sealant in the mounting groove E and fix it to the inner wall surface of the frame 110 through the sealant in the mounting groove E, thereby realizing the installation between the laminate 200 and the frame 110.
[0054] Reference Figures 2 to 7 The dispensing head 300 in this embodiment includes a main body 10 and a nozzle 20. The nozzle 20 is coaxially connected and communicates with the main body 10. The main body 10 is used to connect with a dispensing gun (not shown), so that during dispensing, the dispensing gun can use air pressure to supply sealant into the nozzle 20 via the main body 10.
[0055] Specifically, the gun head 20 includes a bottom wall 21 spaced apart from the main body 10 in the first direction X1 and a side wall 22 disposed between the bottom wall 21 and the main body 10. The bottom wall 21 is provided with a first glue injection port A1, and the side wall 22 is provided with a second glue injection port A2 and a third glue injection port A3 disposed opposite each other in the second direction Y1.
[0056] Understandably, the first direction X1 is the axial direction of the dispensing head 300, while the second direction Y1 is any direction perpendicular to the axial direction of the dispensing head 300. Furthermore, when dispensing adhesive into the mounting groove E of the frame 110 using the dispensing head 300, the first direction X1 of the dispensing head 300 coincides with the third direction X2 of the frame 110, and the second direction Y1 of the dispensing head 300 coincides with the fourth direction Y2 of the frame 110.
[0057] In this embodiment of the application, since the bottom wall 21 of the nozzle 20 of the dispensing head 300 is provided with a first dispensing port A1, and the side wall 22 is provided with a second dispensing port A2 and a third dispensing port A3, when dispensing glue into the mounting groove E using the dispensing head 300, the first dispensing port A1 on the nozzle 20 can be used to inject sealant into the bottom surface of the mounting groove E (i.e., the B side of the frame), and the second dispensing port A2 and the third dispensing port A3 can be used to inject sealant into the two sides of the mounting groove E (i.e., the A side and the C side of the frame). Therefore, based on the design of the second injection port A2 and the third injection port A3, a certain amount of sealant can be injected into both sides of the mounting groove E while simultaneously injecting sealant into the bottom surface of the mounting groove E. When the laminate 200 is embedded in the mounting groove E, the sealant on each inner wall surface is squeezed and flows under the action of the laminate 200, allowing the laminate 200 to form a three-sided bonded seal within the mounting groove E. Compared to injecting the sealant entirely into the bottom of the mounting groove, this approach reduces the amount of sealant used, preventing sealant overflow onto the front of the photovoltaic module and causing secondary contamination. This not only reduces the cost of sealant and manual cleaning but also helps optimize the appearance of the photovoltaic module. Furthermore, the three-sided bonded sealant significantly improves the sealing reliability between the laminate 200 and the frame 110, preventing moisture damage to the photovoltaic module during outdoor operation. This ensures the long-term reliability and extended service life of the photovoltaic module.
[0058] Understandably, the final form of the sealant within the mounting groove E is related to the amount of sealant extruded from each injection port. Specifically, as the amount of sealant on each inner wall surface of the mounting groove E decreases, gaps are formed between the sealants on each inner wall surface, ultimately achieving a reliability design with minimal sealant usage, resulting in the lowest cost for the photovoltaic module. Conversely, as the amount of sealant on each inner wall surface of the mounting groove E increases, the gaps between the sealants on each inner wall surface tend to close until they connect into a single unit, thus forming a high-quality encapsulation. In this case, the reliability and mechanical performance of the photovoltaic module are optimal. It should be noted that regardless of the final form of the sealant, it is within the scope of protection sought in this application.
[0059] In this application, by controlling the opening area ratio between the first injection port A1, the second injection port A2 and the third injection port A3 of the injection head 300, the amount of sealant injected into each inner wall surface of the mounting groove E can be controlled respectively.
[0060] Specifically, in some embodiments, the ratio between the opening area of the second injection port A2 and the opening area of the first injection port A1 is (1-2):(2-4). For example, the ratio between the opening area of the second injection port A2 and the opening area of the first injection port A1 can be 1:2, 1:3, 1:4, 1.5:2, 1.5:3, 1.5:4, 2:2, 2:3, 2:4, 1.5:2.5, 1.5:3.5, etc.
[0061] Here, the ratio between the opening area of the second injection port A2 and the opening area of the first injection port A1 is set within the above range, which makes it easier to control the amount of sealant on the B and A surfaces in the mounting groove E, thereby ensuring the sealing reliability between the laminate 200 and the C and A surfaces of the frame 110 while reducing the cost of sealant and labor.
[0062] This is because if the ratio between the opening area of the second injection port A2 and the opening area of the first injection port A1 is too small, the amount of sealant squeezed out through the second injection port A2 will be too small, resulting in insufficient sealing between the laminate 200 and the A side of the frame 110, thus causing problems with the long-term reliability of the photovoltaic module product due to inadequate encapsulation. On the other hand, if the ratio between the opening area of the second injection port A2 and the opening area of the first injection port A1 is too large, the amount of sealant squeezed out through the second injection port A2 will be too large and / or the amount of sealant squeezed out through the first injection port A1 will be too small, resulting in insufficient sealing between the laminate 200 and the B side of the frame 110, thus causing problems with the long-term reliability of the photovoltaic module product due to inadequate encapsulation, and / or the sealant on the A side of the frame 110 will overflow from the overflow groove G, resulting in problems with aesthetics and increased manual cleaning costs.
[0063] In some embodiments, the opening area of the third injection port A3 is larger than the opening area of the second injection port A2.
[0064] Since side A of frame 110 is located away from body F in the fourth direction Y2, while side C of frame 110 is located close to body F in the fourth direction Y2, the opening area of the third injection port A3 on side C is set to be larger than the opening area of the second injection port A2 on side A. This allows more sealant to be extruded through the third injection port A3 than through the second injection port A2 during injection. As a result, when the laminate 200 is embedded in the mounting groove E and the sealant is squeezed, the sealant is more likely to flow to the body F of frame 110 along the outer edge of side C, ultimately forming a back overflow sealant encapsulation. This does not affect the aesthetics of the front of the photovoltaic module product and also improves the overall sealing reliability of the photovoltaic module.
[0065] In some embodiments, the ratio between the opening area of the third injection port A3 and the opening area of the first injection port A1 is (5-9):(2-4). For example, the ratio between the opening area of the third injection port A3 and the opening area of the first injection port A1 can be 5:2, 5:3, 5:4, 6:2, 6:3, 6:4, 7:2, 7:3, 7:4, 8:2, 8:3, 8:4, 9:2, 9:3, 9:4, etc.
[0066] Here, the ratio between the opening area of the third injection port A3 and the opening area of the first injection port A1 is set within the above range, which makes it easier to control the amount of sealant on the C and B surfaces of the frame 110, thereby ensuring the sealing reliability between the laminate 200 and the C and B surfaces of the frame 110 while reducing the cost of sealant and labor.
[0067] This is because if the ratio between the opening area of the third injection port A3 and the opening area of the first injection port A1 is too small, the amount of sealant extruded through the third injection port A3 will be too small, resulting in insufficient sealing between the laminate 200 and the C-side of the frame 110, thus causing inadequate encapsulation and affecting the long-term reliability of the photovoltaic module product. Conversely, if the ratio between the opening area of the third injection port A3 and the opening area of the first injection port A1 is too large, the amount of sealant extruded through the third injection port A3 will be too large and / or the amount of sealant extruded through the first injection port A1 will be too small. Excessive sealant extrusion through the third injection port A3 will increase the cost of sealant, while insufficient sealant extrusion through the first injection port A1 will result in insufficient sealing between the laminate 200 and the B-side, thus causing inadequate encapsulation and affecting the long-term reliability of the photovoltaic module product.
[0068] Reference Figure 2 and Figure 5 The sidewall 22 of the gun head 20 includes a first wall segment 221 and a second wall segment 222 disposed opposite to each other in the second direction Y1, and a third wall segment 223 disposed between the first wall segment 221 and the second wall segment 222. The first wall segment 221 is provided with a second glue injection port A2, and the second wall segment 222 is provided with a third glue injection port A3.
[0069] Specifically, the first wall segment 221 and the second wall segment 222 can be flat plate structures, and the third wall segment 223 can be arc-shaped structures, or the first wall segment 221, the second wall segment 222 and the third wall segment 223 can all be arc-shaped structures. This application does not make any specific limitations.
[0070] In some embodiments, one end of the second injection port A2 in the first direction X1 can extend to the bottom wall 21 (i.e., the distance between the second injection port A2 and the bottom wall 21 in the first direction X1 is 0). This configuration allows the sealant extruded through the second injection port A2 to be close to the B side of the frame 110 during injection. When the laminate 200 is embedded in the mounting groove E and the sealant is compressed, the sealant on the A side of the frame 110 is easily bonded to the sealant on its B side, thereby helping to improve the overall sealing reliability of the photovoltaic module.
[0071] In other embodiments, one end of the second injection port A2 in the first direction X1 is spaced apart from the bottom wall 21 (i.e., there is a certain distance between the second injection port A2 and the bottom wall 21 in the first direction X1). This arrangement allows the sealant squeezed out through the second injection port A2 to approach the opening end of the mounting groove E (or the overflow groove G) during injection. Then, when the laminate 200 is embedded in the mounting groove E and the sealant is squeezed, the sealant on surface A of the frame 110 flows outwards to the overflow groove G of the frame 110, ultimately forming an overflow seal, which helps improve the overall sealing reliability of the photovoltaic module.
[0072] In some embodiments, one end of the third injection port A3 in the first direction X1 extends to the bottom wall 21 (i.e., the distance between the second injection port A2 and the bottom wall 21 in the first direction X1 is 0). This configuration allows the sealant extruded through the third injection port A3 to be close to the B side of the frame 110 during injection. When the laminate 200 is embedded in the mounting groove E and the sealant is compressed, the sealant on the C side of the frame 110 is easily bonded to the sealant on its B side, thereby helping to improve the overall sealing reliability of the photovoltaic module.
[0073] In other embodiments, one end of the third injection port A3 in the first direction X1 is spaced apart from the bottom wall 21 (i.e., there is a certain distance between the third injection port A3 and the bottom wall 21 in the first direction X1). This arrangement allows the sealant squeezed out through the third injection port A3 to be close to the opening end of the mounting groove E during injection. When the laminate 200 is embedded in the mounting groove E and the sealant is squeezed, the sealant on the C-side of the frame 110 flows outwards to the body F of the frame 110, ultimately forming a back-side sealant overflow, thus not affecting the aesthetics of the front of the photovoltaic module product.
[0074] In some embodiments, refer to Figure 2 and Figure 5 The first injection port A1 can be formed into a rectangular structure or an approximately rectangular structure.
[0075] In some embodiments, refer to Figure 3 and Figure 6In the first direction X1, the cross-sectional area of the second injection port A2 increases sequentially from the nozzle 20 toward the main body 10. This arrangement ensures that the amount of sealant extruded through the second injection port A2 during injection increases sequentially from the nozzle 20 toward the main body 10. This facilitates the flow of sealant along the embedding direction of the laminate 200 when it is embedded in the mounting groove E and the sealant is squeezed out. This helps improve the sealing reliability between the laminate 200 and the A-side of the frame 110, effectively reduces the increase in sealant cost caused by sealant overflow along the A-side of the frame 110, and minimizes the impact on the aesthetic appearance of the photovoltaic module product.
[0076] In some embodiments, refer to Figure 4 and Figure 7 In the first direction X1, the cross-sectional area of the third injection port A3 is arranged to increase sequentially from the nozzle 20 toward the main body 10. This arrangement ensures that the amount of sealant extruded through the third injection port A3 during injection increases sequentially from the nozzle 20 toward the main body 10. This facilitates the flow of sealant along the embedding direction of the laminate 200 when it is embedded in the mounting groove E and the sealant is squeezed out. This helps improve the sealing reliability between the laminate 200 and the C-surface of the frame 110 and effectively reduces the increase in sealant cost caused by sealant overflow along the C-surface of the frame 110.
[0077] In some embodiments, refer to Figure 5 In the first direction X1, at least a portion of the outer surface of the bottom wall 21 is recessed inward to form a first groove D1, and a first injection port A1 is disposed within the first groove D1. Here, forming a first groove D1 on the bottom wall 21 and disposing the first injection port A1 within the first groove D1 allows the sealant extruded through the first injection port A1 to be shaped into a corresponding shape through the first groove D1 during the injection process, so as to adapt to different encapsulation requirements of the B side of the frame 110 and the actual glue overflow effect.
[0078] Specifically, the first groove D1 can be formed on the entire outer surface of the bottom wall 21, and the inner surface of the first groove D1 can be formed into an arc shape or other shapes. Of course, in some other embodiments, the first groove D1 on the bottom wall 21 can be omitted, and the outer surface of the bottom wall 21 can be entirely planar, such as... Figure 2 As shown.
[0079] In some embodiments, refer to Figure 6In the second direction Y1, a portion of the outer surface of the sidewall 22 is recessed inward to form a second groove D2, and a second injection port A2 is disposed within the second groove D2. Here, forming a second groove D2 on the sidewall 22 and disposing of the second injection port A2 within the second groove D2 allows the sealant extruded through the second injection port A2 to be shaped into a corresponding shape through the second groove D2 during the injection process, in order to adapt to different encapsulation requirements of the A side of the frame 110 and the actual glue overflow effect.
[0080] Specifically, the second groove D2 can span the entire first wall segment 221 and extend to a portion of the third wall segment 223, that is, the second groove D2 extends in a direction perpendicular to the second direction Y1 and the first direction X1, the second injection port A2 is disposed in the middle of the second groove D2, and the inner surface of the second groove D2 can be formed into an arc shape or other shapes.
[0081] Of course, in other embodiments, the second groove D2 on the sidewall 22 can be omitted, and the second glue inlet A2 can be disposed on the first wall segment 221 of the sidewall 22, such as... Figure 3 As shown.
[0082] In some embodiments, refer to Figure 7 In the second direction Y1, a portion of the outer surface of the sidewall 22 is recessed inward to form a third groove D3. The third groove D3 is positioned opposite to the second groove D2, and the third injection port A3 is located within the third groove D3. Here, forming the third groove D3 on the sidewall 22 and placing the third injection port A3 within the third groove D3 allows the sealant extruded through the third injection port A3 to be shaped accordingly through the third groove D3 during the injection process, thus adapting to different encapsulation requirements of the C-side of the frame 110 and the actual glue overflow effect.
[0083] Specifically, the third groove D3 can span the entire second wall segment 222 and extend to a portion of the third wall segment 223, that is, the third groove D3 extends in a direction perpendicular to the second direction Y1 and the first direction X1, the third injection port A3 is located in the middle of the third groove D3, and the inner surface of the third groove D3 can be formed into an arc shape or other shapes.
[0084] Of course, in other embodiments, the third groove D3 on the sidewall 22 can be omitted, and the third glue inlet A3 can be disposed in the second wall segment 222 of the sidewall 22, such as... Figure 4 As shown.
[0085] Reference Figures 8 to 11 The mounting structure 100 in this embodiment includes a frame 110, a first adhesive 120, a second adhesive 130, and a third adhesive 140.
[0086] The frame 110 is provided with a mounting groove E with an opening facing the third direction X2. The mounting groove E has a first inner wall surface 111 opposite to its opening and a second inner wall surface 112 and a third inner wall surface 113 opposite to each other in the fourth direction Y2. A first adhesive 120 is disposed on the first inner wall surface 111, a second adhesive 130 is disposed on the second inner wall surface 112, and a third adhesive 140 is disposed on the third inner wall surface 113.
[0087] The first colloid 120, the second colloid 130 and the third colloid 140 are extruded through the first injection port A1, the second injection port A2 and the third injection port A3 on the injection head 300, respectively.
[0088] Reference Figure 8 and Figure 9 The first adhesive 120, the second adhesive 130, and the third adhesive 140 of the mounting structure 100 shown in the figure are obtained through... Figures 2 to 4 The shown dispensing head 300 is used for extrusion molding. (Example) Figure 8 and Figure 9 As shown, the thickness of the first colloid 120 is set to be thin at both ends and thick in the middle in the fourth direction Y2, the thickness of the second colloid 130 is set to decrease sequentially from the opening end of the mounting groove E toward the first inner wall surface 111 in the third direction X2, and the thickness of the third colloid 140 is set to decrease sequentially from the opening end of the mounting groove E toward the first inner wall surface 111 in the third direction X2.
[0089] Specifically, by controlling the amount of sealant extruded from the first injection port A1, the second injection port A2, and the third injection port A3 of the injection head 300, the sealant type on surfaces A, B, and C of the frame 110 can be controlled. For example, when there is a larger amount of sealant on surfaces A and C, a sealant pattern can be formed as follows: Figure 8 The adhesive type shown is then formed after being embedded in the laminate 200. Figure 12 The structure shown can be formed when the amount of sealant on surfaces A and C is relatively small. Figure 9 The adhesive type shown is then formed after being embedded in the laminate 200. Figure 13 The structure shown.
[0090] In this embodiment, based on the aforementioned adhesive structure of the first colloid 120, the second colloid 130, and the third colloid 140, when the laminate 200 is embedded in the mounting groove E and the first colloid 120, the second colloid 130, and the third colloid 140 are squeezed, each colloid will flow more readily to the overflow groove G on the A side and the outer edge of the C side under the action of the laminate 200. It forms a three-sided bonded seal on the A side, B side, and C side of the frame 110. On the one hand, it helps to reduce the amount of sealant used and avoids sealant overflowing to the front of the photovoltaic module product, forming secondary dirt. This not only reduces the cost of sealant and manual cleaning, but also helps to optimize the appearance of the photovoltaic module. On the other hand, it greatly improves the sealing reliability between the laminate 200 and the frame 110, preventing the photovoltaic module from being attacked by moisture when working outdoors, thereby ensuring the reliability and longer service life of the photovoltaic module product during long-term use.
[0091] Reference Figure 10 and Figure 11 The first adhesive 120, the second adhesive 130, and the third adhesive 140 of the mounting structure 100 shown in the figure are obtained through... Figures 5 to 7 The shown dispensing head 300 is used for extrusion molding. (See example 10 and...) Figure 11 As shown, the thickness of the first colloid 120 is set to be thin at both ends and thick in the middle in the fourth direction Y2, the thickness of the second colloid 130 is set to be thin at both ends and thick in the middle in the third direction X2, and the thickness of the third colloid 140 is set to be thin at both ends and thick in the middle in the third direction X2.
[0092] Specifically, by controlling the amount of sealant extruded from the first injection port A1, the second injection port A2, and the third injection port A3 of the injection head 300, the sealant type on surfaces A, B, and C of the frame 110 can be controlled. For example, when there is a larger amount of sealant on surfaces A and C, a sealant pattern can be formed as follows: Figure 10 The adhesive type shown is then formed after being embedded in the laminate 200. Figure 12 The structure shown can be formed when the amount of sealant on surfaces A and C is relatively small. Figure 11 The adhesive type shown is then formed after being embedded in the laminate 200. Figure 13 The structure shown.
[0093] In this embodiment, based on the above-described adhesive structure of the first colloid 120, the second colloid 130, and the third colloid 140, when the laminate 200 is embedded in the mounting groove E and the first colloid 120, the second colloid 130, and the third colloid 140 are squeezed, each colloid will flow towards the outer edge of both the B side and the A side simultaneously under the action of the laminate 200. This helps to increase the contact area between the sealant and the inner wall of the mounting groove E, thereby improving the sealing reliability between the laminate 200 and the frame 110.
[0094] Furthermore, the distance between the highest point of the second colloid 130 in its thickness direction and the end of the second inner wall surface 112 away from the first inner wall surface 111 in the third direction X2 is L1, and the distance between the highest point of the second colloid 130 in its thickness direction and the end of the second inner wall surface 112 near the first inner wall surface 111 in the third direction X2 is L2, where L1 is less than L2. This arrangement ensures sufficient contact area between the A-side of the frame 110 and the sealant, while also facilitating the flow of sealant from the A-side of the frame 110 outwards into the overflow groove G of the frame 110, ultimately forming a front-side overflow sealant encapsulation. However, it prevents overflow from the overflow groove G, thus preserving the aesthetics of the front of the photovoltaic module product.
[0095] The distance between the highest point of the third colloid 140 in its thickness direction and the end of the third inner wall surface 113 away from the first inner wall surface 111 in the third direction X2 is L3, and the distance between the highest point of the third colloid 140 in its thickness direction and the end of the third inner wall surface 113 near the first inner wall surface 111 in the third direction X2 is L4, where L3 is less than L4. This arrangement ensures the contact area between the C-side of the frame 110 and the sealant, while also facilitating the flow of sealant from the C-side of the frame 110 to the outer edge of the C-side onto the body F of the frame 110, ultimately forming a back-side sealant overflow, thus not affecting the aesthetics of the front of the photovoltaic module product.
[0096] Reference Figure 12 and Figure 13 The photovoltaic module in this embodiment includes a laminate 200 and an installation structure 100. The laminate 200 is installed in the installation groove E and is sealed to the inner wall of the installation groove E of the frame 110 through a first colloid 120, a second colloid 130 and a third colloid 140.
[0097] In some embodiments, such as Figure 12 As shown, at least one of the second colloid 130 and the third colloid 140 is integrally connected with the first colloid 120. Integrating at least one of the second colloid 130 and the third colloid 140 with the first colloid 120 can significantly improve the mechanical properties of the photovoltaic module.
[0098] Specifically, the second colloid 130 can be integrally connected with the first colloid 120, and the third colloid 140 can be spaced apart from the first colloid 120; or the third colloid 140 can be integrally connected with the first colloid 120, and the second colloid 130 can be spaced apart from the first colloid 120; or both the second colloid 130 and the third colloid 140 can be integrally connected with the first colloid 120. This application does not impose any specific limitations.
[0099] In some embodiments, the second colloid 130 and the third colloid 140 are both spaced apart from the first colloid 120, such as... Figure 13As shown, the second colloid 130 and the third colloid 140 are spaced apart from the first colloid 120, which helps to reduce the amount of sealant used, thereby reducing the manufacturing cost of photovoltaic modules.
[0100] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.
Claims
1. A dispensing head, characterized in that, For applying adhesive to the frame of photovoltaic modules, including: Main body (10); and The gun head (20) is connected to the main body (10), and the gun head (20) includes a bottom wall (21) spaced apart from the main body (10) in a first direction (X1) and a side wall (22) disposed between the bottom wall (21) and the main body (10); The bottom wall (21) is provided with a first glue injection port (A1), and the side wall (22) is provided with a second glue injection port (A2) and a third glue injection port (A3) arranged opposite to each other in a second direction (Y1), wherein the first direction is perpendicular to the second direction.
2. The dispensing head according to claim 1, characterized in that, The ratio between the opening area of the second injection port (A2) and the opening area of the first injection port (A1) is (1-2):(2-4).
3. The dispensing head according to claim 1, characterized in that, The opening area of the third injection port (A3) is larger than the opening area of the second injection port (A2).
4. The dispensing head according to claim 3, characterized in that, The ratio between the opening area of the third injection port (A3) and the opening area of the first injection port (A1) is (5-9):(2-4).
5. The dispensing head according to claim 1, characterized in that, In the first direction (X1), at least a portion of the outer surface of the bottom wall (21) is recessed inward to form a first groove (D1), and the first injection port (A1) is disposed in the first groove (D1); and / or In the second direction (Y1), a portion of the outer surface of the sidewall (22) is recessed inward to form a second groove (D2), and the second injection port (A2) is disposed within the second groove (D2); and / or In the second direction (Y1), a portion of the outer surface of the sidewall (22) is recessed inward to form a third groove (D3), and the third injection port (A3) is disposed in the third groove (D3).
6. The dispensing head according to any one of claims 1-5, characterized in that, The second injection port (A2) extends at one end in the first direction (X1) to the bottom wall (21) or is spaced apart from the bottom wall (21); and / or The third injection port (A3) extends to the bottom wall (21) at one end in the first direction (X1) or is spaced apart from the bottom wall (21).
7. The dispensing head according to any one of claims 1-5, characterized in that, In the first direction (X1), the cross-sectional area of the second injection port (A2) is arranged to increase sequentially from the nozzle (20) toward the body (10); and / or In the first direction (X1), the cross-sectional area of the third injection port (A3) is arranged to increase sequentially from the nozzle (20) toward the body (10); and / or The first injection port (A1) has a rectangular structure.
8. An installation structure (100), characterized in that, Includes a frame (110), the frame (110) is provided with a mounting groove (E) with an opening facing a third direction (X2), the mounting groove (E) has a first inner wall surface (111) opposite to its opening and a second inner wall surface (112) and a third inner wall surface (113) opposite to each other in the fourth direction (Y2), a first adhesive (120) is provided on the first inner wall surface (111), a second adhesive (130) is provided on the second inner wall surface (112), and a third adhesive (140) is provided on the third inner wall surface (113); The first colloid (120), the second colloid (130), and the third colloid (140) are extruded through the first injection port (A1), the second injection port (A2), and the third injection port (A3) of the injection head according to any one of claims 1-7.
9. The mounting structure (100) according to claim 8, characterized in that, The distance between the highest point of the second colloid (130) in its thickness direction and the end of the second inner wall surface (112) facing away from the first inner wall surface (111) in the third direction (X2) is L1, and the distance between the highest point and the end of the second inner wall surface (112) near the first inner wall surface (111) in the third direction (X2) is L2, where L1 is less than L2; and / or The distance between the highest point of the third colloid (140) in its thickness direction and the end of the third inner wall surface (113) facing away from the first inner wall surface (111) in the third direction (X2) is L3, and the distance between the highest point and the end of the third inner wall surface (113) near the first inner wall surface (111) in the third direction (X2) is L4, where L3 is less than L4.
10. The mounting structure (100) according to claim 8, characterized in that, The thickness of the first colloid (120) is set to be thin at both ends and thick in the middle in the fourth direction (Y2), the thickness of the second colloid (130) is set to be thin at both ends and thick in the middle in the third direction (X2), and the thickness of the third colloid (140) is set to be thin at both ends and thick in the middle in the third direction (X2); or The thickness of the first colloid (120) is set to be thin at both ends and thick in the middle in the fourth direction (Y2), the thickness of the second colloid (130) is set to decrease sequentially from the opening end of the mounting groove (E) toward the first inner wall surface (111) in the third direction (X2), and the thickness of the third colloid (140) is set to decrease sequentially from the opening end of the mounting groove (E) toward the first inner wall surface (111) in the third direction (X2).
11. A photovoltaic module, characterized in that, The device includes a laminate (200) and an installation structure (100) according to any one of claims 8-10, wherein the laminate (200) is installed in the installation groove (B) and is sealed to the inner wall of the installation groove (B) by the first adhesive (120), the second adhesive (130) and the third adhesive (140).
12. The photovoltaic module according to claim 11, characterized in that, The second colloid (130) and the third colloid (140) are spaced apart from the first colloid (120); or At least one of the second colloid (130) and the third colloid (140) is integrally connected with the first colloid (120).