Photovoltaic frame

Abstract

The utility model provides a photovoltaic frame, and relates to the field of photovoltaic modules. The photovoltaic frame comprises a frame base material with a cavity and further comprises a corner key, the corner key comprises two bent parts which are perpendicular to each other, the bent parts are inserted into the cavity, first metal pieces are arranged at the two ends of the cavity respectively, and the first metal pieces extend into the cavity in a protruding mode; the bending part is provided with a second metal piece, and the second metal piece protrudes out of the surface of the bending part and is matched with the first metal piece in an abutting mode so that the bending part can be fixed in the cavity. According to the embodiment of the invention, the frame base material is connected through the insertion type corner key, the corner key is inserted into the cavity, and the rigid connection between the first metal piece and the second metal piece can form a stable connection relationship between the corner key and the frame base material, so that the mechanical connection strength is enhanced, and the phenomena of frame separation, corner key explosion and the like are not easy to occur; and the problem of framing failure caused by insufficient binding force after the organic frame is framed is solved.

Description

Technical Field

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

[0002] The photovoltaic (PV) frame plays a crucial role in the 30-year warranty of PV modules. Externally, besides serving as a fixed power generation unit to the PV system, it must also withstand various mechanical loads from wind, snow, and hail. Internally, it needs to seal the solar cells, busbars, and other power generation and energized components to prevent external moisture penetration and corrosion. Therefore, PV frames have extremely stringent technical requirements in terms of material selection, design, and manufacturing methods.

[0003] Driven by the industry's need to reduce costs, more and more organic material manufacturers are developing composite organic frames to replace aluminum frames for photovoltaic module encapsulation. Composite frames have many inherent advantages, such as high plasticity, light weight, and low cost. However, they also have some disadvantages that need to be addressed in the design phase. In particular, the mechanical strength at the joints of composite materials is low. During the frame assembly process, the force between the corner keys and the inner wall of the frame cavity is insufficient, which often leads to substandard frame assembly, or even the risk of frame detachment and corner key breakage.

[0004] Based on this, the present invention provides a photovoltaic frame to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a photovoltaic frame to solve the problem of insufficient bonding force after assembling organic frames, which leads to frame assembly failure.

[0006] To achieve the above objectives, this utility model provides a photovoltaic frame, which also includes a corner key. The corner key includes two mutually perpendicular bent portions, which are inserted into a cavity. A first metal part is provided at each end of the cavity, and the first metal part protrudes into the cavity. A second metal part is provided on the bent portion, which protrudes from the surface of the bent portion and abuts against the first metal part, so that the bent portion is fixed in the cavity.

[0007] Optionally, an installation groove is provided on the inner wall of the cavity; the first metal part includes a first metal plate, and a plurality of protruding posts are evenly distributed on one side of the first metal plate, the plurality of protruding posts passing through the inner wall and extending into the cavity.

[0008] Optionally, multiple protruding pillars extend 1 mm beyond the inner surface of the cavity.

[0009] Optionally, the first metal part is bonded to the bottom of the mounting groove.

[0010] Optionally, the inner walls of both bends are provided with grooves, and a second metal part is embedded in the grooves, with the second metal part protruding from the surface of the corresponding bend.

[0011] Optionally, the second metal part includes a second metal plate, which is embedded in the groove; the surface of the second metal plate facing the first metal part is covered with parallel oblique teeth, the length direction of which is perpendicular to the insertion direction of the bent portion.

[0012] Optionally, the other side of the second metal plate is evenly distributed with multiple insert posts, which are inserted into multiple holes at the bottom of the groove.

[0013] Optionally, it includes four frame substrates and four corner keys; the four frame substrates are respectively inserted into the four corner keys in sequence.

[0014] The photovoltaic frame provided by this utility model adopts a split design. The conventional part of the frame is made of an integral composite profile, while the joint parts that need to be reinforced adopt a design that combines metal and composite profile. At the same time, the corner key is also provided with a metal part. The first metal part of the corner key and the second metal part of the cavity design abut against each other to form a strong interlocking force, ensuring that the corner key obtains sufficient bonding force and mechanical strength in the frame cavity. This avoids problems such as insufficient bonding force after the organic frame is assembled, which may lead to substandard frame assembly, or even frame detachment and corner key breakage. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the 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 utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the photovoltaic frame provided in an embodiment of the present utility model;

[0017] Figure 2 A schematic diagram of the structure of the frame substrate provided in an embodiment of this utility model;

[0018] Figure 3 A schematic diagram of the end structure of the frame substrate provided in an embodiment of this utility model;

[0019] Figure 4 A cross-sectional structural diagram of the frame substrate provided in an embodiment of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the first metal part provided in an embodiment of the present utility model;

[0021] Figure 6 A schematic diagram of the corner key provided in an embodiment of this utility model;

[0022] Figure 7 A schematic diagram of the bent portion of the corner key provided in an embodiment of this utility model;

[0023] Figure 8 This is a schematic diagram of the structure of the second metal part provided in an embodiment of the present utility model;

[0024] Figure 9 A schematic diagram of the frame substrate and corner key connection structure provided in an embodiment of this utility model.

[0025] Figure label:

[0026] 1-Cavity; 2-Frame substrate; 3-Corner key; 4-First metal part; 5-Groove; 6-Second metal part; 7-Mounting groove; 8-Protruding post; 9-Hedged rack; 10-Insertion post; 11-Second metal plate; 12-Bending part; 13-Hole. Detailed Implementation

[0027] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Considering the manufacturing cost of modules, photovoltaic module frames are currently mostly made of composite materials. However, composite materials have low mechanical strength, especially during the frame assembly process. The corner keys at the splicing points of composite material frames and the inner wall of the frame cavity are not strong enough, often resulting in substandard frame assembly, or even frame detachment and corner key breakage. This directly affects the efficiency and quality of frame assembly.

[0031] Therefore, this application provides a photovoltaic frame that uses a rigid connection at the splicing point of the frame substrate and generates a large frictional force to form a stable connection between the corner key and the frame substrate, thereby enhancing the mechanical connection strength and making it less likely for the frame to detach or the corner key to break.

[0032] like Figure 1-9 As shown, a photovoltaic frame includes a frame substrate 2 with a cavity 1, and corner keys 3. The corner keys 3 include two mutually perpendicular bent portions 12, which are inserted into the cavity 1. First metal parts 4 are respectively provided at both ends of the cavity 1, and the first metal parts 4 protrude into the cavity 1. The bent portions 12 are provided with second metal parts 6, which protrude from the surface of the bent portions 12 and abut against the first metal parts 4, so that the bent portions 12 are fixed in the cavity 1.

[0033] The frame substrate 2 is the basic profile that constitutes the photovoltaic frame. Generally, a photovoltaic frame can be formed by splicing multiple frame substrates 2, with connectors at the splicing points for fixation. Since photovoltaic frames are usually rectangular, the frame substrate 2 can also be divided into long frame substrate 2 and short frame substrate 2. It should be noted that the frame substrate 2 proposed in this embodiment is not only applicable to the aforementioned rectangular frames, but also to frames of other shapes and irregular shapes. Therefore, the frame substrate 2 provided in this application embodiment can be regarded as a general term for the profiles that constitute the photovoltaic frame.

[0034] The frame substrate 2 has an internal cavity, which can be referred to as cavity 1. Cavity 1 can penetrate through the frame substrate 2 or be located at both ends of the frame substrate 2. This is because the two ends of the frame substrate 2 are usually used to connect to other frame substrates 2, therefore, cavities 1 need to be provided at both ends of the frame substrate 2 to meet the splicing requirements of the frame substrates 2. Angle keys 3 can be inserted into the cavity 1 to connect adjacent frame substrates 2. Whether the connection between the angle key 3 and the cavity 1 is stable directly affects the mechanical connection strength at the splicing point of the frame substrates 2. It can be seen that the connection method between the angle key 3 and the cavity 1 plays a crucial role in the stability of the spliced ​​frame substrates 2.

[0035] Angle key 3 is a fastener connecting the two frame substrates 2. Angle key 3 can be inserted into the cavity 1 and fit tightly against the inner wall of the cavity 1, generating a large frictional force to ensure a stable connection between angle key 3 and frame substrate 2, preventing them from easily detaching. The surface of angle key 3 (i.e., the surface that fits against the inner wall of the cavity 1) can be provided with a protruding structure. This protruding structure can compress the inner wall of the cavity 1, generating a large mechanical frictional force between the two, preventing relative movement under a certain external force, thereby achieving a stable connection.

[0036] To achieve the above objectives, a first metal part 4 can be provided at the end of the frame substrate 2, i.e., at the position where the cavity 1 contacts the corner key 3; and a second metal part 6 protruding from the surface of the corner key 3 can be provided on the corner key 3. The first metal part 4 and the second metal part 6 are tightly fitted together, which can generate a large frictional force.

[0037] refer to Figures 2 to 5 A mounting groove 7 is provided on the outer surface of the end of the frame substrate 2, and the mounting groove 7 is recessed into the outer surface of the frame substrate 2. The mounting groove 7 is used to install the first metal part 4, and multiple through holes are formed in the mounting groove 7, which communicate with the cavity 1. Multiple protruding posts 8 are provided on the first metal part 4, and the multiple protruding posts 8 protrude from the surface of the first metal part 4. It can be understood that the position, shape and size of the multiple protruding posts 8 are matched with the multiple through holes. Therefore, when the first metal part 4 is installed in the mounting groove 7, the multiple protruding posts 8 penetrate the multiple through holes, and a portion of the multiple protruding posts 8 is located within the cavity 1.

[0038] refer to Figures 6 to 8 The corner key 3 includes two bent portions 12 arranged perpendicularly to each other. Each bent portion is provided with a groove 5, and a second metal part 6 is installed in the groove 5. The second metal part 6 protrudes from the surface of the bent portion 12 and abuts against the first metal part 4. Exemplarily, the bottom of the groove 5 is provided with multiple holes 13, and the second metal part 6 is also provided with multiple insertion posts 10. The position, shape, and size of the multiple insertion posts 10 are matched with the multiple holes 13. Therefore, when the second metal part 6 is installed in the groove 5, the multiple insertion posts 10 are respectively inserted into the multiple holes 13, so that the second metal part 6 is stably fixed in the groove 5. It should be noted that the multiple holes 13 are mounting holes for installing the second metal part 6. These multiple mounting holes do not penetrate the bottom of the groove 5 and have a certain depth. Therefore, in one embodiment, the height of the multiple insertion posts 10 is not greater than the depth of the holes 13, so that the insertion posts 10 and the holes 13 form a better matching connection.

[0039] The heights of the multiple insert posts 10 can be set to the same size or different sizes, but the depth of the corresponding holes 13 should also be set accordingly to ensure that the second metal part 6 is stably installed in the groove 5. In a preferred embodiment, the height and depth of each pair of mating insert posts 10 are set to be the same.

[0040] On the outer surface of the second metal part 6, that is, the surface where the second metal part 6 and the first metal part 4 mate and contact, protrusions that can increase friction can be provided, such as multiple inclined racks. The multiple racks abut against the multiple protruding posts 8 of the first metal part 4 and apply a certain pressure to the multiple protruding posts 8 so that the first metal part 4 and the second metal part 6 are firmly connected.

[0041] The photovoltaic frame provided by this utility model adopts a split design. The conventional part of the frame uses an integrated composite profile, while the joint parts that need to be reinforced use a design that combines metal and composite profile. At the same time, the corner key 3 also has a metal part. The first metal part 4 of the corner key 3 and the second metal part 6 designed in the cavity 1 are interference fit to form a strong interlocking force, ensuring that the corner key 3 obtains sufficient bonding force and mechanical strength in the frame cavity 1. This avoids problems such as insufficient bonding force after the organic frame is assembled, which may lead to substandard frame assembly, or even frame detachment and corner key 3 bursting.

[0042] refer to Figure 2 and Figure 4 The inner wall of the cavity is provided with an installation groove; the first metal part includes a first metal plate, and a plurality of protruding posts are evenly distributed on one side of the first metal plate. The plurality of protruding posts extend into the cavity through the inner wall. The plurality of protruding posts extend 1 mm beyond the inner surface of the cavity.

[0043] In an optional embodiment, an installation groove 7 is provided on the inner wall of the cavity 1; the first metal part 4 includes a first metal plate, and a plurality of protruding posts 8 are evenly distributed on one side of the first metal plate, and the plurality of protruding posts 8 extend into the cavity 1 through the inner wall of the cavity.

[0044] The first metal part 4 is installed in the form of mounting slot 7, which is convenient and secure. The outer surface of the metal plate is flush with the outer surface of the inner wall opposite to the cavity hole, ensuring the overall appearance and avoiding scratches and other abnormalities. Multiple protruding pillars 8 on the inner side of the metal plate extend into the cavity hole, forming a multi-point engagement with the second metal part 6, resulting in a tighter engagement.

[0045] In an optional embodiment, an installation groove 7 is provided on the inner wall surface of the cavity wall of the cavity 1; the first metal part 4 includes a first metal plate, the first metal plate is embedded in the installation groove 7, and the side of the first metal plate facing the cavity hole of the cavity 1 is also provided with multiple parallel oblique teeth, and the tooth orientation of the oblique teeth is opposite to the oblique tooth orientation of the second metal part 6.

[0046] In one embodiment, the inclined rack 9 is tilted at an acute angle, and the opening direction of this angle is opposite to the direction in which the corner key 3 is inserted into the cavity 1. This increases the resistance to the corner key 3 being removed from the cavity 1, even when the corner key 3 is inserted into the cavity 1. Through the interlocking of the racks, the frame substrate 2 and the corner key 3 are more firmly bonded and less likely to fall off.

[0047] Furthermore, the protrusion height of the protruding column 8 can be flexibly adjusted according to the material properties and specifications; here, multiple protruding columns 8 extend 1mm beyond the inner surface of the inner sidewall. An excessively long protrusion height may cause material damage during installation; an excessively short protrusion height may result in poor fixing effect.

[0048] In one embodiment, the first metal part 4 is bonded to the bottom of the mounting groove 7. The adhesive provides the bonding force between the substrate and the metal part, thereby making the first metal part 4 more tightly connected to the mounting groove 7 and improving stability.

[0049] refer to Figures 6 to 8 The inner sides of both bent portions 12 are provided with grooves 5, and a second metal part 6 is embedded in the grooves 5. The second metal part 6 protrudes from the surface of the corresponding bent portion 12.

[0050] The two bent portions 12 can be provided with grooves 5 of the same size, which match the second metal part 6. Multiple holes 13 are provided at the bottom of the grooves 5, and the second metal part 6 is also provided with multiple insertion posts 10. The position, shape, and size of the multiple insertion posts 10 match the multiple holes 13. Therefore, when the second metal part 6 is installed in the groove 5, the multiple insertion posts 10 are inserted into the multiple holes 13 respectively, so that the second metal part 6 is stably fixed in the groove 5.

[0051] like Figure 8 As shown, the second metal part includes a second metal plate 11, which is embedded in a groove; the surface of the second metal plate 11 facing the first metal part is covered with parallel oblique teeth 9, and the length direction of the oblique teeth 9 is perpendicular to the insertion direction of the bent part 12.

[0052] In an optional embodiment, grooves 5 are provided on the inner sides of both bending portions 12, and the second metal part 6 includes a second metal plate 11, which is embedded in the groove 5; the surface of the second metal plate 11 facing the first metal part 4 is covered with parallel oblique teeth 9, and the length direction of the oblique teeth 9 is perpendicular to the insertion direction of the bending portion 12.

[0053] The second metal part 6 is also installed in an embedded manner, which is convenient for installation. The oblique toothed rack 9 on the second metal plate 11 engages with the protruding post 8 to form a strong interlocking force, ensuring that the corner key 3 obtains sufficient bonding force and mechanical strength in the cavity 1.

[0054] In one embodiment, a plurality of insert posts are evenly distributed on the other side of the second metal plate 11, and the plurality of insert posts are inserted into a plurality of holes 13 at the bottom of the groove.

[0055] The insert post 10 can be cylindrical in shape, and correspondingly, the hole 13 is also set as a cylindrical groove. It should be noted that the multiple holes 13 are mounting holes for installing the second metal part 6. These multiple mounting holes do not penetrate the bottom of the groove and have a certain depth.

[0056] With this installation method, the second metal plate 11 is installed more firmly and is not easy to fall off. Further bonding with adhesive can improve the firmness.

[0057] like Figure 1 As shown, in one embodiment, it includes four frame substrates 2 and four corner keys 3; the four frame substrates 2 are respectively inserted into the four corner keys 3 in sequence.

[0058] In the optional embodiment, four frame substrates 2 and four corner keys 3 are included;

[0059] The four frame substrates 2 are respectively inserted into the four corner keys 3.

[0060] Four frame substrates 2 and corner keys 3 are sequentially connected and assembled to form a photovoltaic frame. The interference fit between the metal parts generates force, ensuring that the corner keys 3 have sufficient bonding force and mechanical strength within the frame cavity 1, resulting in a very strong frame assembly. The substrates can be selected to form rectangles or squares of different sizes depending on their length.

[0061] This embodiment adopts a split design. The regular part of the frame uses an integrated composite profile, while the joint parts requiring reinforcement use a combination of metal and composite profiles. The corner key 3 also has a metal component. The second metal part 6 of the corner key 3 abuts against the first metal part 4 of the cavity 1, forming a strong interlocking force. This ensures that the corner key 3 obtains sufficient bonding force and mechanical strength within the frame cavity 1, avoiding problems such as insufficient bonding force after assembling the organic frame, leading to substandard assembly, or even frame detachment or corner key breakage. This embodiment connects the frame substrate 2 via an insertable corner key 3. The corner key 3 is inserted into the cavity 1, and the rigid connection between the first metal part 4 and the second metal part 6 ensures a stable connection between the corner key 3 and the frame substrate 2, enhancing its mechanical connection strength and reducing the likelihood of frame detachment or corner key breakage. This solves the problem of insufficient bonding force leading to frame assembly failure after organic frame assembly.

[0062] Finally, it should be noted that, as will be apparent to those skilled in the art, this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this application.

[0063] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A photovoltaic frame, comprising a frame substrate having a cavity, and further comprising corner keys, the corner keys comprising two mutually perpendicular bent portions, the bent portions being inserted into the cavity, characterized in that, The cavity is provided with a first metal part at each end, and the first metal part protrudes into the cavity; The bending portion is provided with a second metal part, which protrudes from the surface of the bending portion and abuts against the first metal part to fix the bending portion inside the cavity.

2. The photovoltaic frame according to claim 1, characterized in that, An installation groove is provided on the inner wall of the cavity; The first metal part includes a first metal plate, and a plurality of protruding pillars are evenly distributed on one side of the first metal plate, and the plurality of protruding pillars extend into the cavity through the inner sidewall.

3. The photovoltaic frame according to claim 2, characterized in that, The protruding pillars extend 1 mm beyond the inner surface of the cavity.

4. The photovoltaic frame according to claim 2, characterized in that, The first metal part is bonded to the bottom of the mounting groove.

5. The photovoltaic frame according to claim 2, characterized in that, The inner sides of both of the bending portions are provided with grooves, and the second metal part is embedded in the grooves. The second metal part protrudes from the surface of the corresponding bending portion.

6. The photovoltaic frame according to claim 5, characterized in that, The second metal part includes a second metal plate, which is embedded in the groove; the surface of the second metal plate facing the first metal part is covered with parallel oblique teeth, the length direction of which is perpendicular to the insertion direction of the bent portion.

7. The photovoltaic frame according to claim 6, characterized in that, The other surface of the second metal plate is evenly distributed with a plurality of insert posts, which are inserted into a plurality of holes at the bottom of the groove.

8. The photovoltaic frame according to any one of claims 1-7, characterized in that, Includes four of the aforementioned frame substrates and four of the aforementioned corner keys; The four frame substrates are respectively inserted into the four corner keys in sequence.

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