Frame

Abstract

The utility model discloses a frame which comprises a plurality of borders, a connecting protrusion or a connecting groove is formed on the outer side of each border, and the borders are configured to be in mortise and tenon connection with the borders corresponding to the adjacent frames through the connecting protrusions and the connecting grooves. According to the frame, the connecting protrusions and the connecting grooves which are matched with each other are arranged on the outer side wall of the frame, so that the frame achieves waterproof sealing through the structure of the frame, compared with a water guiding groove, the sealing effect is guaranteed, meanwhile, additional waterproof components are omitted, the situation that the waterproof components fall off due to looseness of the waterproof components is avoided, and the service life of the frame is prolonged. In addition, the construction process is reduced, the construction efficiency is improved, and the material cost and the labor cost are saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic devices, and more particularly to a frame. BACKGROUND

[0002] Building integrated photovoltaics refers to integrating photovoltaic modules with conventional building components into a new type of photovoltaic building material that can replace part of the building materials. The defect of this technology is that photovoltaic modules are usually waterproofed by installing a water guide groove. Specifically, two adjacent photovoltaic module frames are fixed on a support by a pressing block, a water guide groove is installed at the bottom of the gap between the frame and the pressing block to achieve waterproofing. However, if a pressing block fixing point loosens, it is easy to cause the photovoltaic module to loosen and fall off, resulting in damage and failure of the drainage system. In addition, this scheme adds many components such as the water guide groove, making the construction process more complex and the cost higher. CONTENT OF THE UTILITY MODEL

[0003] The frame provided by the embodiments of the present application.

[0004] The frame provided by the embodiments of the present application includes a plurality of frames, each of which has a connecting protrusion or a connecting groove formed on the outer side, and the frames are configured to be connected by the connecting protrusions and the connecting grooves.

[0005] The frame provided by the present application has a connecting protrusion and a connecting groove on the outer side wall of the frame, which realizes waterproof sealing by the structure of the frame itself. Compared with the water guide groove, the frame can ensure the sealing effect without additional waterproof components, avoid the falling off of the waterproof components caused by loosening, and thus cause the waterproof failure. In addition, the construction process is simplified, the construction efficiency is improved, and the material and labor costs are saved.

[0006] In some embodiments, the frame is rectangular, and the connecting protrusions are formed on the outer side walls of any two frames, and the connecting grooves are formed on the outer side walls of the remaining two frames.

[0007] In this way, the rectangular frame has high utilization rate when used as building materials, and the rectangular frame has low production difficulty and relatively low production cost.

[0008] In some embodiments, the connecting protrusions are arranged on the outer side walls of two adjacent frames, and the connecting grooves are arranged on the outer side walls of the remaining two adjacent frames.

[0009] In this way, compared with arranging the connecting protrusions and the connecting grooves on the opposite two frames, arranging them on the adjacent frames can help reduce the installation difficulty of multiple photovoltaic modules.

[0010] In some embodiments, the frame includes a first side plate and a second side plate, and the first side plate and the second side plate form the connecting groove.

[0011] In this way, a stable connecting groove can be formed by the first clamping plate and the second clamping plate, which helps to increase the overall stability and rigidity of the connecting groove.

[0012] In some embodiments, the thickness of the connecting protrusion is greater than the thickness of the first side plate and the thickness of the second side plate.

[0013] In this way, using a connecting protrusion with a larger thickness helps to improve the structural strength of the connecting protrusion, so that it can withstand greater shear force and bending force.

[0014] In some embodiments, the cross section of the connecting protrusion and the cross section of the connecting groove are both rectangular, and the two rectangular dimensions cooperate with each other.

[0015] In this way, the cross sections of the connecting protrusion and the clamping groove are rectangular and cooperate with each other in size, so that the connecting groove can be more closely fitted to the connecting protrusion, thereby providing better clamping effect and helping to keep the position of the connecting protrusion stable.

[0016] In some embodiments, the connecting groove and the connecting protrusion are in interference fit or transition fit.

[0017] In this way, the connecting groove and the connecting protrusion are in interference fit or transition fit, so that when the connecting groove and the connecting protrusion are connected, a seal can be formed between the connecting groove and the connecting protrusion, which helps to further improve the waterproof ability of the frame.

[0018] In some embodiments, the photovoltaic module further includes a fastener, the connecting protrusion is provided with a first fixing hole, the first side plate is provided with a second fixing hole, and the second side plate is provided with a third fixing hole, and the fastener passes through the first fixing hole, the second fixing hole and the third fixing hole to connect the connecting protrusion and the connecting groove.

[0019] In this way, the connecting protrusion and the connecting groove are fixed using a fastener, which helps to make the connection more closely.

[0020] In some embodiments, the connecting protrusion and the connecting groove are hollow.

[0021] In this way, the hollow structure can reduce the weight of the photovoltaic module, while helping to reduce the production cost of the photovoltaic module.

[0022] In some embodiments, the photovoltaic module further includes a sealing gasket, and the sealing gasket is arranged between the connecting protrusion and the connecting groove.

[0023] Thus, the sealing gasket is added between the connecting protrusion and the connecting groove, which can effectively prevent rainwater from penetrating along the gap and improve the waterproof effect.

[0024] Additional aspects and advantages of the embodiments of the present application will be set forth in part in the description that follows, and in part will become apparent to those skilled in the art upon examination of the following and / or can be learned by practice of the embodiments of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0025] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings in which:

[0026] Figure 1 is an assembly view of the frame of the embodiment of the present application;

[0027] Figure 2 is a structural view of the frame of the embodiment of the present application;

[0028] Figure 3 is a structural view of the bezel of the frame of the embodiment of the present application;

[0029] Figure 4 is a structural view of the connecting groove of the frame of the embodiment of the present application;

[0030] Figure 5 is a structural view of the connecting protrusion of the frame of the embodiment of the present application;

[0031] Figure 6 is a sectional view of the frame of the embodiment of the present application;

[0032] Figure 7 is an assembly view of the frame of the embodiment of the present application.

[0033] Main element symbol explanation: frame 100, bezel 10, first bezel 11, second bezel 12, third bezel 13, fourth bezel 14, connecting protrusion 20, first connecting protrusion 21, second connecting protrusion 22, first fixing hole 23, connecting groove 30, first connecting groove 31, second connecting groove 32, first side plate 33, second fixing hole 331, second side plate 34, third fixing hole 341, fastener 40, sealing gasket 50. DETAILED DESCRIPTION

[0034] Embodiments of the present application are described below in detail with reference to the accompanying drawings, in which like or similar elements are denoted by the same or similar reference signs, and examples of the embodiments are shown in the drawings. The embodiments described below are examples for explaining the present application, and are merely intended to explain the present application, and should not be understood as limiting the present application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate the orientation or positional relationship shown in the drawings, and are merely intended to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be understood as limiting the present application. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0035] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", and "connection" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected. It can be a mechanical connection, or an electrical connection. It can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] In the present application, unless otherwise explicitly specified and limited, "on" or "under" the first feature of the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "under", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0037] The disclosure herein provides many different embodiments or examples for implementing different structures of the present application. For the purpose of simplification of the present application, the components and arrangements of the particular examples are described herein. These are, of course, merely examples and are not intended to limit the present application. Further, the present application can repeat reference numerals and / or reference letters in different examples and this repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and / or configurations discussed. Further, the present application provides examples of various specific processes and materials, but one skilled in the art will appreciate that other processes and / or materials can be used.

[0038] BIPV refers to integrating photovoltaic modules with conventional building components into a new type of photovoltaic building material that cannot be separated and can replace part of the building materials. The defect of this technology is that photovoltaic modules are usually waterproofed by installing a water guide groove. Specifically, two adjacent photovoltaic module frames are fixed on a support by a pressing block, a water guide groove is installed at the bottom of the gap between the frame and the pressing block to achieve waterproofing. However, if a pressing block fixing point loosens, it is easy to cause the module to loosen and fall off, resulting in damage and failure of the drainage system. In addition, this scheme adds many parts such as the water guide groove, making the construction process more complex and the cost higher.

[0039] Please refer to Figure 1 The embodiment of the present application provides a frame 100 applied to a photovoltaic module, the frame 100 comprises a plurality of frames 10, a connecting protrusion 20 or a connecting groove 30 is formed on the outer side of each frame 10, and the frame 10 is configured to be connected with the corresponding frame 10 of the adjacent frame 100 through the connecting protrusion 20 and the connecting groove 30.

[0040] The frame 100 provided by the present application realizes waterproof sealing by setting the connecting protrusion 20 and the connecting groove 30 matched with each other on the outer side wall of the frame 100, so that the frame 100 realizes waterproof sealing by using its own structure. Compared with setting a water guide groove, the sealing effect is guaranteed while the additional waterproof components are avoided, the falling off of the waterproof components caused by loosening of the waterproof components is avoided, so that the waterproof failure is avoided, the construction process is also reduced, the construction efficiency is improved, and the material and labor costs are saved.

[0041] Specifically, in the embodiments of the present application, the connecting protrusions 20 and the connecting grooves 30 form a mortise and tenon structure, which is a connecting method that combines concave and convex on two components. The connecting protrusions 20 and the connecting grooves 30 are engaged to play a connecting role. Due to the close fit of the connecting protrusions 20 and the connecting grooves 30, a sealed space is formed at the connection between the frames 100. This sealed space can effectively prevent the intrusion of external substances such as moisture and dust, thereby protecting the normal operation of the photovoltaic module. In addition, the connecting method of the connecting protrusions 20 and the connecting grooves 30 makes the connection between the frames 100 more secure, which can withstand greater external force and deformation.

[0042] It should be noted that during the manufacturing and installation process, the precision and fit of the connecting protrusions 20 and the connecting grooves 30 need to be ensured to ensure the firmness and sealing of the connection. During use, the connection of the frame 100 should be checked regularly for looseness or damage, and repaired or replaced in time.

[0043] In the embodiments of the present application, each of the frames 100 and the connecting protrusions 20 or the connecting grooves 30 arranged on the frame 100 are integrally formed. The frame 100 should be made of materials with good corrosion resistance and weather resistance to prolong the service life of the photovoltaic module. Optionally, the material of the frame 100 can be high-strength plastic, aluminum alloy, etc.

[0044] In some embodiments, the number of frames 100 can be three, four, six, etc., and the connecting protrusions 20 and the connecting grooves 30 can be arranged on the continuous edges as needed, for example, when the number of frames 100 is six, the frame 100 should be a regular hexagon, wherein three of the frames 100 have connecting protrusions 20 arranged on the outer side, and the other three frames 100 have connecting grooves 30 formed on the outer side, and the frames 100 with connecting protrusions 20 and the frames 100 with connecting grooves 30 are alternately arranged.

[0045] In some embodiments, the frame 100 is rectangular, and the outer side walls of any two frames 100 are provided with connecting protrusions 20, and the outer side walls of the remaining two frames 100 are provided with connecting grooves 30.

[0046] In this way, the rectangular frame 100 has high utilization rate when used as building materials, and the rectangular frame 100 is relatively easy to produce and has relatively low production cost.

[0047] Specifically, in the embodiments of the present application, the frame 100 is rectangular, and has four continuous edges, wherein the outer side walls of two frames 100 are provided with connecting protrusions 20, and the outer side walls of the other two frames 100 are provided with connecting grooves 30. Optionally, the two continuous edges with connecting protrusions 20 can be arranged opposite to each other or adjacent to each other, and similarly, the two continuous edges with connecting grooves 30 should also be arranged opposite to each other or adjacent to each other correspondingly.

[0048] It should be noted that if the frame 100 is not square, when the two continuous edges with the connecting protrusions 20 and the two continuous edges with the connecting grooves 30 are arranged opposite to each other, an additional frame 100 with the same size as the frame 100 described above but with the connecting protrusions 20 and the connecting grooves 30 interchanged should be made for use.

[0049] In some embodiments, two frames 100 with the same size can also be selected for use, one of which has the connecting protrusions 20 arranged on all four continuous edges, and the other of which has the connecting grooves 30 arranged on all four continuous edges, and the two frames 100 are used in combination to achieve the mortise and tenon connection between the frames 100.

[0050] Please refer to Figure 2 and Figure 3 In some embodiments, the connecting protrusions 20 are arranged on the outer side walls of two adjacent frame sides 10 of the frame 100, and the connecting grooves 30 are arranged on the outer side walls of the remaining two adjacent frame sides 10 of the frame 100.

[0051] In this way, compared with arranging the connecting protrusions 20 and the connecting grooves 30 on the opposite two frame sides 10, arranging them on the adjacent frame sides 10 facilitates the installation of the plurality of photovoltaic modules.

[0052] Specifically, in the embodiments of the present application, the frame 100 includes a first frame side 11, a second frame side 12, a third frame side 13, and a fourth frame side 14, the connecting protrusions 20 include a first connecting protrusion 21 and a second connecting protrusion 22, the first connecting protrusion 21 is arranged on the outer side wall of the first frame side 11, and the second connecting protrusion 22 is arranged on the outer side wall of the second frame side 12, the connecting grooves 30 include a first connecting groove 31 and a second connecting groove 32, the first connecting groove 31 is arranged on the outer side wall of the third frame side 13, and the second connecting groove 32 is arranged on the outer side wall of the fourth frame side 14.

[0053] Further, in the embodiments of the present application, one end of the first connecting protrusion 21 close to the second connecting protrusion 22 is extended outward and forms an inclined surface with the first frame side 11 at an angle of 45° on the side, and the other end of the first connecting protrusion 21 away from the second connecting protrusion 22 forms a plane perpendicular to the first frame side 11, and similarly, one end of the second connecting protrusion 22 close to the first connecting protrusion 21 is extended outward and forms an inclined surface with the second frame side 12 at an angle of 45° on the side, and the other end of the second connecting protrusion 22 away from the first connecting protrusion 21 forms a plane perpendicular to the second frame side 12, in this way, when the first frame side 11 and the second frame side 12 are connected, the first connecting protrusion 21 and the second connecting protrusion 22 are connected and form the connecting protrusion 20 for sealing the corner of the frame 100 at the connection.

[0054] Similarly, in the embodiments of the present application, the first connecting groove 31 is extended outward near one end close to the second connecting groove 32 and forms a side surface with an angle of 45° with the first frame 11, and the other end of the first connecting groove 31 away from the second connecting groove 32 forms a plane perpendicular to the first frame 11. Similarly, the second connecting groove 32 is extended outward near one end close to the first connecting groove 31 and forms a side surface with an angle of 45° with the second frame 12, and the other end of the second connecting groove 32 away from the first connecting groove 31 forms a plane perpendicular to the second frame 12. In this way, when the first frame 11 and the second frame 12 are connected, the first connecting groove 31 and the second connecting groove 32 are connected and form a connecting groove 30 for sealing the corner of the frame 100.

[0055] In some embodiments, the first connecting protrusion 21 can also be extended to the end surface parallel to the outer side surface of the second connecting protrusion 22 near one end close to the second connecting protrusion 22, or the second connecting protrusion 22 can be extended to the end surface parallel to the outer side surface of the first connecting protrusion 21 near one end close to the first connecting protrusion 21, to form a connecting protrusion 20 for sealing the corner of the frame 100. Similarly, the first connecting groove 31 can be extended to the end surface parallel to the outer side surface of the second connecting groove 32 near one end close to the second connecting groove 32, or the second connecting groove 32 can be extended to the end surface parallel to the outer side surface of the first connecting groove 31 near one end close to the first connecting groove 31, to form a connecting groove 30 for sealing the corner of the frame 100.

[0056] Please refer to Figure 4 In some embodiments, the frame 10 includes a first side plate 33 and a second side plate 34, and the first side plate 33 and the second side plate 34 form the connecting groove 30.

[0057] In this way, through the first clamping plate and the second clamping plate, a stable connecting groove 30 can be formed, which helps to increase the overall stability and rigidity of the connecting groove 30.

[0058] Specifically, in the embodiments of the present application, two side plates are arranged on the outer side wall of part of the frame 10, the first side plate 33 and the second side plate 34 are arranged at intervals and form the connecting groove 30 between the first side plate 33 and the second side plate 34. When two adjacent frames 100 are connected, the connecting protrusion 20 is inserted into the connecting groove 30, so that the first side plate 33 and the second side plate 34 clamp the connecting protrusion 20 to form a seal.

[0059] In other embodiments, other number of side plates can also be arranged on the outer side wall of the frame 10. At this time, the number of connecting protrusions 20 should be arranged according to the number of connecting grooves 30 enclosed by the side plates.

[0060] Please refer to Figure 4 and Figure 5In some embodiments, the thickness of the connecting protrusion 20 is greater than the thickness of the first side plate 33 and the second side plate 34.

[0061] In this way, using a connecting protrusion 20 with a larger thickness helps to improve the structural strength of the connecting protrusion 20, allowing it to withstand greater shear forces and bending forces.

[0062] Specifically, in the embodiments of the present application, the increase in the thickness of the connecting protrusion 20 means that the volume and contact area of the connecting protrusion 20 also increase. This helps to provide greater friction and engagement when the connecting protrusion 20 is connected to the connecting groove 30, thereby enhancing the stability of the connection. By increasing the thickness of the connecting protrusion 20, the strength and toughness of the wood can be more fully utilized, improving the load-bearing capacity of the connection site.

[0063] In addition, since the mortise and tenon structure requires high-precision machining and fitting, increasing the thickness of the connecting protrusion 20 helps to maintain higher precision and stability during the machining process. Although increasing the thickness of the tenon may increase the difficulty of installation, a reasonable thickness design can make the installation process smoother while improving the firmness of the connection.

[0064] Further, the root of the connecting protrusion 20 and the roots of the first side plate 33 and the second side plate 34 should each be provided with a transition fillet. The provision of a transition fillet not only facilitates demolding but also avoids stress concentration, improving the structural strength of the connecting protrusion 20 and the connecting groove 30.

[0065] Please refer to Figures 3 to 6 In some embodiments, the cross-section of the connecting protrusion 20 and the cross-section of the connecting groove 30 are both rectangular, with the two rectangular dimensions cooperating with each other.

[0066] In this way, the cross-sections of the connecting protrusion 20 and the clamping groove are rectangular dimensions that cooperate with each other, allowing the connecting groove 30 to fit the connecting protrusion 20 more tightly, thereby providing better clamping effect and helping to maintain the positional stability of the connecting protrusion 20.

[0067] Specifically, in the embodiments of the present application, the connecting protrusion 20 and the connecting groove 30 are chosen to have a rectangular cross-section. The tenon with a rectangular cross-section and the connecting groove 30 fit tightly, reducing the possibility of gaps and leaks. The connecting protrusion 20 and the connecting groove 30 with a rectangular cross-section can provide a larger contact area, thereby increasing the stability of the connection. Compared to other shapes of mortise and tenon structures, the rectangular cross-section is easier to achieve precise fitting, reducing the risk of looseness or deformation due to improper fitting. Moreover, since the tenon with a rectangular cross-section and the connecting groove 30 have a larger contact area, they can disperse the stress at the connection site, improving the overall load-bearing capacity. This makes the mortise and tenon structure with a rectangular cross-section perform better under larger loads, making it suitable for applications that require high-strength connections.

[0068] On the other hand, the tenon with a rectangular cross-section and the connecting groove 30 are relatively simple, easy to process and manufacture, which is conducive to reducing production costs and improving production efficiency.

[0069] In other embodiments, the cross-sectional shape of the connecting protrusion 20 and the connecting groove 30 can also be selected as trapezoidal, dovetail-shaped or other shapes, and the specific cross-sectional shape of the connecting protrusion 20 and the connecting groove 30 can be selected according to actual needs, which will not be described here.

[0070] In some embodiments, the connecting groove 30 and the connecting protrusion 20 are interference fit or transition fit.

[0071] In this way, the connecting groove 30 and the connecting protrusion 20 are interference fit or transition fit, and the connecting groove 30 and the connecting protrusion 20 can form a seal between them when connected, which is conducive to further improving the waterproof capability of the frame 100.

[0072] Specifically, in the embodiments of the present application, the connecting groove 30 and the connecting protrusion 20 are transition fit, which allows a certain gap or slight interference between the connecting groove 30 and the connecting protrusion 20 compared with interference fit, which makes the assembly process relatively easy, does not require excessive external force, and is easier to add additional sealing structure to the connecting groove 30 and the connecting protrusion 20 to further improve the sealing effect. At the same time, the transition fit can adapt to the slight deformation caused by temperature, humidity and other factors, improving the adaptability and stability of the structure.

[0073] It should be noted that compared with interference fit, the connection strength of transition fit may be slightly lower, and more connection points or reinforcement measures are needed to improve the stability of the overall structure. In addition, the transition fit needs to reasonably control the gap to ensure that they can be tightly fitted and not easy to loosen. If the connection strength needs to be improved, the stability of the overall structure can be strengthened by increasing the connection points, using reinforcing members or adopting other connection methods.

[0074] In some embodiments, the connecting groove 30 and the connecting protrusion 20 can also be interference fit, which forms a firm connection through the tight contact between the connecting groove 30 and the connecting protrusion 20 compared with transition fit, improving the overall stability of the structure. Due to the tightness and difficulty of loosening of the connection part, the interference fit mortise and tenon structure usually has good durability and can withstand large loads and long-term use. In addition, interference fit also helps to reduce the vibration and noise of the connection part, improving the performance of the overall structure.

[0075] It should be noted that the interference fit requires the size and shape of the connecting groove 30 and the connecting protrusion 20 to be very precise, which is difficult to process and requires high-precision processing equipment and technology. Moreover, due to the close contact between the connecting groove 30 and the connecting protrusion 20, a large external force is required to assemble them together, which increases the difficulty and cost of assembly.

[0076] Please refer to Figure 6 In some embodiments, the photovoltaic module further comprises a fastener 40, the first fixing hole 23 is arranged on the connecting protrusion 20, the second fixing hole 331 is arranged on the first side plate 33, and the third fixing hole 341 is arranged on the second side plate 34. The fastener 40 passes through the first fixing hole 23, the second fixing hole 331 and the third fixing hole 341 to connect the connecting protrusion 20 and the connecting groove 30.

[0077] In this way, the connecting protrusion 20 and the connecting groove 30 are fixed by using the fastener 40, which is conducive to making the connection more closely.

[0078] Specifically, compared with traditional nail or adhesive fixing, the bolt fixing of the connecting protrusion 20 and the connecting groove 30 is easier to repair and replace. If it is necessary to replace the damaged part, the bolt can be simply disassembled without damaging the entire structure, and additional stability can be provided to prevent loosening or deformation due to long-term stress. In addition, in some cases, using bolt fixing of the mortise and tenon structure can speed up the construction progress. Bolt connection is usually easier to achieve precise alignment and quick fixing than traditional mortise and tenon connection.

[0079] It should be noted that the cost of the additional fastener 40 is relatively high, and the use of the fastener 40 usually requires the connecting protrusion 20 and the connecting groove 30 to have sufficient strength and hardness to withstand the fastening force of the bolt, and stress concentration may also occur at the connection. Therefore, when using the fastener 40, a suitable fastener 40 should be selected according to the size and load requirements of the connecting protrusion 20 and the connecting groove 30. Ensure that the fastener 40 can meet the connection requirements. At the same time, when using the fastener 40, the appropriate fastening force should be controlled. Too tight may cause damage to the frame 100, and too loose may cause unstable connection.

[0080] In the embodiments of the present application, the fastener 40 is a pair of bolts and nuts, and the bolt is locked with the nut after passing through the first fixing hole 23, the second fixing hole 331 and the third fixing hole 341 to realize the connection of the connecting protrusion 20 and the connecting groove 30.

[0081] Please refer to Figure 3 In some embodiments, the connecting protrusion 20 and the connecting groove 30 are hollow.

[0082] Therefore, the hollow structure can reduce the weight of the photovoltaic module and reduce the production cost of the photovoltaic module.

[0083] Specifically, the hollow structure can increase the aesthetic appearance of the connecting protrusion 20 and the connecting groove 30, and reduce the weight of the mortise and tenon structure, so that the mortise and tenon structure is more portable and easy to carry. It should be noted that when the hollow part needs to bear a large load, additional reinforcement measures need to be taken to ensure its stability. During use and maintenance, attention should be paid to protect the hollow part from damage such as impact or scratching to prolong its service life.

[0084] In the embodiments of the present application, the connecting protrusion 20, the first side plate 33 and the second side plate 34 are hollow and arranged in a hollow structure. Specifically, the connecting protrusion 20, the first side plate 33 and the second side plate 34 are arranged in a hollow structure along the length direction.

[0085] Please refer to Figure 7 In some embodiments, the photovoltaic module further comprises a sealing gasket 50 arranged between the connecting protrusion 20 and the connecting groove 30.

[0086] Therefore, the sealing gasket 50 arranged between the connecting protrusion 20 and the connecting groove 30 can effectively prevent rainwater from seeping into the gap, and improve the waterproof effect.

[0087] Specifically, in the embodiments of the present application, a sealing gasket 50 is additionally arranged between the connecting protrusion 20 and the connecting groove 30. The sealing gasket 50 is usually a flexible sealing gasket 50. The flexible sealing gasket 50 has the function of soft contact and excellent sealing and waterproof effect. Since rubber is durable and has low material cost, the flexible sealing gasket 50 can be a rubber sealing gasket 50. In other embodiments, the material of the sealing gasket 50 can also be silicone, latex or foam, etc.

[0088] The sealing gasket 50 is used as a filler to fill the small gap between the connecting protrusion 20 and the connecting groove 30, so as to prevent water, dust or other impurities from entering the connecting part and affecting the stability and service life of the photovoltaic module. The size and shape of the sealing gasket 50 need to be customized according to the actual size and shape of the connecting protrusion 20 and the connecting groove 30. Ensure that the sealing gasket 50 can be closely attached to the connecting part to form an effective sealing barrier.

[0089] During installation, the sealing gasket 50 is placed at a specific position of the connecting protrusion 20 or the connecting groove 30, and then the connecting protrusion 20 and the connecting groove 30 are tightly connected together through the fastener 40. Therefore, the sealing gasket 50 will be compressed at the connecting part, thereby further improving the sealing performance.

[0090] In some embodiments, sealant can also be applied between the connecting protrusion 20 and the connecting groove 30, and it is noted that the original sealant should be completely removed and re-applied after disassembly.

[0091] In the description of the present specification, the description of the terms "certain embodiments", "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0092] In addition, the terms "first", "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, unless otherwise specifically limited.

[0093] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and cannot be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A frame for use in photovoltaic modules, characterized in that, The frame includes multiple borders, each of which has a connecting protrusion or connecting groove formed on its outer side. The borders are configured to be mortised and tenoned with the borders of adjacent frames via the connecting protrusions and connecting grooves.

2. The framework according to claim 1, characterized in that, The frame is rectangular, and the connecting protrusions are formed on the outer walls of any two of the frame's side borders, while the connecting grooves are formed on the outer walls of the remaining two frame's side borders.

3. The framework according to claim 1, characterized in that, The connecting protrusions are provided on the outer side walls of two adjacent frames of the frame, and the connecting grooves are provided on the outer side walls of the remaining two adjacent frames of the frame.

4. The framework according to claim 1, characterized in that, The frame includes a first side plate and a second side plate, which together form the connecting groove.

5. The frame according to claim 4, characterized in that, The thickness of the connecting protrusion is greater than the thickness of the first side plate and the thickness of the second side plate.

6. The framework according to claim 4, characterized in that, The cross-section of the connecting protrusion perpendicular to the axis and the cross-section of the connecting groove are both rectangular, and the dimensions of the two rectangles are matched.

7. The frame according to claim 4, characterized in that, The connecting groove and the connecting protrusion are either interference fit or transition fit.

8. The frame according to claim 4, characterized in that, The photovoltaic module also includes a fastener. The connecting protrusion is provided with a first fixing hole, the first side plate is provided with a second fixing hole, and the second side plate is provided with a third fixing hole. The fastener passes through the first fixing hole, the second fixing hole, and the third fixing hole to connect the connecting protrusion with the connecting groove.

9. The framework according to claim 1, characterized in that, The connecting protrusion and the connecting groove are hollowed out.

10. The framework according to claim 1, characterized in that, The photovoltaic module also includes a sealing gasket disposed between the connecting protrusion and the connecting groove.

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