Protective device for a photovoltaic module

Abstract

The application relates to the technical field of protective structures, in particular to a protective device for a photovoltaic module, which comprises an inner embedding piece, an outer protective piece and a connecting piece; the inner embedding piece is used for being assembled in a profile empty part of a frame of the photovoltaic module, and the inner embedding piece is provided with a first connecting hole; the outer protective piece is covered outside the frame, and the outer protective piece is provided with a second connecting hole corresponding to the first connecting hole; the frame is provided with a third connecting hole at a position corresponding to the first connecting hole and the second connecting hole; the connecting piece can sequentially connect the second connecting hole, the third connecting hole and the first connecting hole from outside the profile, so that the outer protective piece, the frame and the inner embedding piece are fixedly connected. The inner embedding piece and the outer protective piece of the protective device adopt a physical connection mode, the structure is reasonable, installation is convenient, and connection is reliable; the problem of local stress concentration and cracking or creep can be effectively solved, the composite material photovoltaic frame can be effectively protected from damage caused by torsion and tearing, and the risk of loose connection can be reduced.

Description

Technical Field

[0001] This application relates to the field of protective structure technology, and in particular to a protective device for photovoltaic modules. Background Technology

[0002] The frames of photovoltaic modules are traditionally made of aluminum alloy, primarily to protect the glass edges, improve the overall mechanical strength of the module, and facilitate installation. However, aluminum frames have disadvantages such as being heavy, costly, and susceptible to corrosion in corrosive environments like marine environments and chemical plants.

[0003] In recent years, composite materials have begun to be used in photovoltaic frames due to their excellent properties such as lightweight, high strength, corrosion resistance, and insulation. However, traditional external pressure blocks connect composite materials by directly pressing them together with bolts. Under extreme natural environments such as strong winds, heavy snow loads, and hail impacts, this can easily lead to localized stress concentration in the composite materials, causing cracking or creep, resulting in loose connections and potentially causing engineering accidents.

[0004] Therefore, there is an urgent need in this field for a protective device that can effectively protect composite photovoltaic frames. Utility Model Content

[0005] In view of this, the purpose of this application is to provide a protective device for photovoltaic modules, so as to solve to some extent the problem of cracking or loosening of connections caused by local stress concentration in the frame of photovoltaic modules. The specific technical solution is as follows: A protective device for photovoltaic modules includes an insert, an outer sheath, and a connector; The insert is used to be assembled into the profile hollow of the frame of the photovoltaic module, and the insert has a first connection hole; The outer protective member covers the outside of the frame, and the outer protective member has a second connecting hole corresponding to the first connecting hole; The frame is provided with a third connecting hole at the position corresponding to the first connecting hole and the second connecting hole; The connector can be sequentially connected from the outside of the profile to the second connecting hole, the third connecting hole and the first connecting hole, so as to fix the outer protective member, the frame and the inner insert together.

[0006] Furthermore, the insert includes a first workpiece and a second workpiece; The first workpiece is block-shaped; the second workpiece covers the outside of the first workpiece, and the second workpiece is adapted to the profile hollow of the first workpiece and the frame. The first workpiece is provided with the first connecting hole, and the second workpiece is provided with a positioning hole corresponding to the first connecting hole.

[0007] Furthermore, the first workpiece is made of high-strength metal or alloy; the second workpiece is made of plastic.

[0008] Furthermore, the second workpiece covers part or all of the outer surface of the first workpiece, and the first workpiece and the covering part of the second workpiece are in contact.

[0009] Furthermore, there is a gap between the insert and the inner wall surface of the profile hollow portion of the frame along the first direction; The first direction forms an angle with the connection direction of the connector.

[0010] Furthermore, the outer protective member includes a first part, a second part, and a third part connected in sequence. The first part, the second part, and the third part form a semi-enclosed structure to fit and cover the three sides of the frame. The first part fits and covers the first side of the frame, the second part fits and covers the second side of the frame, and the third part fits and covers the third side of the frame.

[0011] Furthermore, the extension direction of the first part is parallel to the extension direction of the third part, and the extension directions of the first part and the third part are perpendicular to the connection direction of the connector.

[0012] Furthermore, the third connecting hole is disposed on the third surface.

[0013] Furthermore, the outer protective component is made of high-strength metal or alloy material.

[0014] Furthermore, the protective device for photovoltaic modules also includes gaskets; The connector is a bolt, and the washer is disposed between the bolt and the outer protective component.

[0015] Compared with existing technologies, the beneficial effects of this solution are: The protective device for photovoltaic modules in this solution is a modular module structure. Its internal and external pressure components are physically connected, resulting in a rational structure and convenient installation. This significantly improves construction efficiency, enabling rapid positioning and locking, and reducing installation costs. Furthermore, this connection method is reliable, effectively addressing issues such as cracking or creep caused by localized stress concentration. It effectively protects the composite photovoltaic frame from damage due to torsion and tearing, reduces the risk of loose connections, and ensures the modules have sufficient wind pressure resistance. This guarantees the long-term stability and safety of the power station system, indirectly improving power generation efficiency and lifespan. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the structure of the first workpiece of the protective device for photovoltaic modules in this embodiment; Figure 2 This is a schematic diagram of the structure of the second workpiece of the protective device for photovoltaic modules in this embodiment; Figure 3 This is a schematic diagram of the structure of the third component of the protective device for photovoltaic modules in this embodiment.

[0017] Figure 4 This is a schematic diagram of the assembly structure of the first and second workpieces of the protective device for photovoltaic modules in this embodiment. Figure 5 This is a schematic diagram of the assembly structure of the inner and outer protective components of the protective device for photovoltaic modules in this embodiment; Figure 6 This is a cross-sectional structural diagram of the protective device for photovoltaic modules in this embodiment.

[0018] icon: 1-Installation piece; 11-First workpiece; 111-First connecting hole; 12-Second workpiece; 121-Positioning hole; 2-Outer protective component; 21-First part; 22-Second part; 23-Third part; 24-Second connecting hole; 3- Bolt; 4- Frame; 5- Gap. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0020] The embodiments of this application propose a protective device for photovoltaic modules to protect and enhance the frame of the photovoltaic modules. In particular, for frames made of composite materials, the protective device of this embodiment can effectively solve the problem of cracking or creep caused by local stress concentration, and protect the composite photovoltaic frame from damage caused by torsion and tearing.

[0021] The following is in conjunction with the appendix Figures 1 to 6 This embodiment describes the specific structural composition and working principle of the protective device.

[0022] See Figure 5 and Figure 6 and combined Figures 1 to 4 As shown, the protective device in this embodiment includes an inner insert 1, an outer protective member 2, and a connector.

[0023] See Figure 5 and Figure 6As shown, the insert 1 is used to be assembled into the profile cavity of the frame 4 of the photovoltaic module. Specifically, the insert 1 can extend into the profile cavity of the frame 4 from one end of the frame 4. The overall length of the insert 1 can be adapted to the extension length of the profile cavity, that is, the overall length of the insert 1 can be equal to the extension length of the profile cavity, so as to cooperate with the outer protective member 2 and the connector described below to protect and strengthen the entire length range of the frame 4. The overall length of the insert 1 can also be shorter than the extension length of the profile cavity, so as to cooperate with the outer protective member 2 and the connector described below to protect and strengthen a specific position range of the frame 4.

[0024] See Figure 1 , Figure 2 and Figure 4 As shown, the insert 1 includes a first workpiece 11 and a second workpiece 12, which are pre-assembled into a single unit and then fitted into the profile cavity of the frame 4. The first workpiece 11 is block-shaped and made of high-strength metal or alloy, such as stainless steel. The second workpiece 12 is a positioning component that covers the first workpiece 11. The second workpiece 12 has a ring-like structure and is fitted around the outside of the first workpiece 11 to cover part or all of its outer surface. The two workpieces are fitted together at the covering point to improve the stability of the assembled structure. The inner wall shape of the second workpiece 12 is adapted to the shape of the first workpiece 11 so that it can be fitted around the outside of the first workpiece 11 and assembled into the insert 1. The outer wall shape of the second workpiece 12 is adapted to the shape of the profile cavity so that when the insert 1 is assembled into the profile cavity of the frame 4, the insert 1 can be more stably assembled with the profile cavity. Therefore, the second workpiece 12 can position the first workpiece 11 and provide a stable connection with the profile cavity. The second workpiece 12 is made of plastic so that it can be manufactured into a shape that fits the first workpiece 11 and the hollow part of the profile, and at the same time, it can save costs to a certain extent.

[0025] In addition, see Figure 1 As shown, the first workpiece 11 is provided with a first connecting hole 111, see [reference]. Figure 2 As shown, a positioning hole 121 is provided on the second workpiece 12 at the position corresponding to the first connecting hole 111. The first connecting hole 111 and the positioning hole 121 are connected to the connecting parts in conjunction with the second connecting hole 24 and the third connecting hole described below, so as to realize the stable connection of the inner insert 1, the frame 4 and the outer protective part 2.

[0026] Specifically, the frame 4 includes a first surface, a second surface and a third surface connected in sequence, wherein the first surface and the third surface are arranged in parallel, and the third surface is connected to the hollow part of the profile. Therefore, the third surface of the frame 4 is provided with a third connecting hole, and the first connecting hole 111 of the insert 1 is arranged opposite to the second connecting hole 24 of the frame 4.

[0027] In addition, in this embodiment, a gap 5 is further reserved between the insert 1 and the inner wall of the hollow section of the profile to reserve space for thermal expansion and contraction of the overall structure caused by temperature changes. For details, please refer to Figure 6 , there is a gap 5 between the insert 1 and the inner wall surface of the hollow section of the profile of the frame 4 along the first direction a, and the first direction a is perpendicular to the connection direction of the connecting member. That is, in the connection direction matching the connecting member, the insert 1 is attached and connected to the hollow section of the profile to achieve stable structural connection; in the non-connection direction of the insert 1, a gap is reserved between the insert 1 and the inner wall surface of the hollow section of the profile to provide space for thermal expansion and contraction.

[0028] Referring to Figure 3 and FIG. 5, the outer protector 2 is wrapped outside the frame 4, and comprises a first portion 21, a second portion 22 and a third portion 23 connected in sequence. The first portion 21, the second portion 22 and the third portion 23 form a "匚"-shaped semi-enclosed structure to attach and wrap three surfaces of the frame 4. Specifically, the first portion 21 attaches and wraps the first surface of the frame 4, the second portion 22 attaches and wraps the second surface of the frame 4, and the third portion 23 attaches and wraps the third surface of the frame 4, so as to effectively resist possible tearing or torsional deformation of the frame 4, thereby protecting the photovoltaic module from damage. The material of the outer protector 2 is preferably high-strength metal or alloy material, which makes the outer protector 2 have high mechanical strength and good tensile and compressive properties, and can be applied to large modules or areas with large wind load and snow load.

[0029] Referring to Figure 3 and in combination with Figure 6 , the third portion 23 of the outer protector 2 is provided with a second connection hole 24 at positions corresponding to the first connection hole 111 and the third connection hole. The second connection hole 24, the third connection hole, the first connection hole 111 and the positioning hole 121 are coaxially arranged, and a connecting member sequentially passes through the second connection hole 24, the third connection hole, the positioning hole 121 and the first connection hole 111 from the outside of the outer protector 2, so as to realize stable connection of the outer protector 2, the frame 4 and the insert 1.

[0030] Referring to Figure 6 , the connecting member may be a bolt 3. The above-mentioned first connection hole 111, second connection hole 24 and third connection hole are threaded holes, and the above-mentioned positioning hole 121 may be a threaded hole, or may only be a positioning hole 121 for the bolt 3 to pass through. Optionally, the protection device of this embodiment further comprises a gasket, which is arranged between the bolt 3 and the outer protector 2, so as to improve the connection stability of the outer protector 2, the frame 4 and the insert 1 connected by the bolt 3.

[0031] The specific assembly process of the protection device for a photovoltaic module in this embodiment is as follows: Step 1: process a positioning hole 121 (a third connection hole) at a specified position (the third surface) of the photovoltaic frame 4; Step 2: Assemble the first workpiece 11 and the second workpiece 12 to form a pre-assembled assembly (embedded part 1). Step 3: Insert the pre-assembled component into the profile cavity of the frame 4 from the end, ensuring that the first connecting hole 111 of the insert 1 is aligned with the third connecting hole of the frame 4. Step 4: Place the outer protective piece 2 onto the frame 4, aligning its second connecting hole 24 with the third connecting hole; Step 5: Place the washer onto bolt 3; Step 6: Pass the bolt 3 through the connecting hole between the outer protective part 2 and the frame 4, through the positioning hole 121 of the second workpiece 12 and screw it into the connecting hole of the inner insert 1, and tighten it with a wrench.

[0032] The protective device of this utility model is a modular component structure. Its internal and external pressure components are physically connected, resulting in a reasonable structure and convenient installation. This significantly improves construction efficiency, enabling rapid positioning and locking, and reducing installation costs. Furthermore, this connection method is reliable and effectively solves the problem of cracking or creep caused by localized stress concentration, thus effectively protecting the composite photovoltaic frame from damage caused by torsion and tearing. In addition, while ensuring sufficient wind pressure resistance, it also provides space for thermal expansion and contraction due to temperature changes, preventing frame deformation or glass cracking caused by stress concentration. This ensures the long-term stability and safety of the power station system, indirectly improving power generation efficiency and lifespan.

[0033] Furthermore, it should be noted that the protective components of this embodiment are particularly suitable for connection protection of composite material photovoltaic frames. Of course, they can also be used for structural reinforcement of photovoltaic frames made of other materials or similar frame structures in other fields. As long as they have similar frame structures, structural reinforcement requirements, and are suitable for the protective structure of this solution, they are all within the protection scope of this solution.

[0034] The above examples illustrate the principles and implementation methods of this utility model. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A protective device for photovoltaic modules, characterized in that, Includes inserts, outer sheaths, and connectors; The insert is used to be assembled into the profile hollow of the frame of the photovoltaic module, and the insert has a first connection hole; The outer protective member covers the outside of the frame, and the outer protective member has a second connecting hole corresponding to the first connecting hole; The frame is provided with a third connecting hole at the position corresponding to the first connecting hole and the second connecting hole; The connector can be sequentially connected from the outside of the profile to the second connecting hole, the third connecting hole and the first connecting hole, so as to fix the outer protective member, the frame and the inner insert together.

2. The protective device for photovoltaic modules according to claim 1, characterized in that, The insert includes a first workpiece and a second workpiece; The first workpiece is block-shaped; the second workpiece covers the outside of the first workpiece, and the second workpiece is adapted to the profile hollow of the first workpiece and the frame. The first workpiece is provided with the first connecting hole, and the second workpiece is provided with a positioning hole corresponding to the first connecting hole.

3. The protective device for photovoltaic modules according to claim 2, characterized in that, The first workpiece is made of high-strength metal or alloy; the second workpiece is made of plastic.

4. The protective device for photovoltaic modules according to claim 2, characterized in that, The second workpiece covers part or all of the outer surface of the first workpiece, and the first workpiece and the covering part of the second workpiece are in contact.

5. The protective device for photovoltaic modules according to claim 1, characterized in that, There is a gap between the insert and the inner wall surface of the profile hollow portion of the frame along the first direction; The first direction forms an angle with the connection direction of the connector.

6. The protective device for photovoltaic modules according to claim 1, characterized in that, The outer protective component includes a first part, a second part, and a third part connected in sequence. The first part, the second part, and the third part form a semi-enclosed structure to fit and cover the three sides of the frame. The first part fits and covers the first side of the frame, the second part fits and covers the second side of the frame, and the third part fits and covers the third side of the frame.

7. The protective device for photovoltaic modules according to claim 6, characterized in that, The extension direction of the first part is parallel to the extension direction of the third part, and the extension directions of the first part and the third part are perpendicular to the connection direction of the connector.

8. The protective device for photovoltaic modules according to claim 6, characterized in that, The third connecting hole is located on the third surface.

9. The protective device for photovoltaic modules according to claim 1, characterized in that, The outer protective component is made of high-strength metal or alloy material.

10. The protective device for photovoltaic modules according to claim 1, characterized in that, It also includes gaskets; The connector is a bolt, and the washer is disposed between the bolt and the outer protective component.

Images