Photovoltaic module backsheet venting and heat dissipation grid

Abstract

The utility model relates to photovoltaic module technical field discloses a photovoltaic module backboard ventilation heat dissipation grid, including backplate, the top fixedly connected with toughened glass of backplate, the bottom fixedly connected with the grid plate of backplate, the front of grid plate is provided with mounting mechanism, the mounting mechanism includes the movable plate of sliding connection in the left side inner wall of grid plate, the left end fixedly connected with the plug -in board of movable plate, the front fixedly connected with fixed column of movable plate, the front of fixed column is provided with protection assembly, the right side of grid plate is provided with T groove, in the utility model, the cooperation of T plate and T groove through mounting mechanism has realized the quick predetermination of multiple grid plates, effectively solved the problem that predetermination is difficult when traditional bolt penetrates and fixes, greatly simplified the splicing flow, and cooperation bolt connection avoided the defect that buckle connection clamping force is insufficient and easy to loosen, thereby improved overall installation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic module technology, and in particular to a ventilation and heat dissipation grille for the back panel of a photovoltaic module. Background Technology

[0002] The photovoltaic module backsheet is a key structural material located on the back of the solar cell. It is usually made of multi-layer composite films (such as TPT, TPE, etc.) or metal sheets and serves as the back protective layer of the photovoltaic module.

[0003] When photovoltaic (PV) modules are operating, approximately 70% of the energy absorbed by the solar cells and converted into electrical energy is converted into heat (only about 30% is converted into electrical energy), causing the module temperature to rise. Temperature is a key factor affecting the power generation efficiency of PV modules. Generally, when the cell temperature rises, the power generation efficiency decreases, and prolonged high temperatures can also accelerate module aging, such as backsheet material degradation and microcracks in the cells, shortening the module's lifespan. In such cases, ventilation and heat dissipation grilles need to be installed.

[0004] Traditional splicing methods often rely on bolts for direct fixation, requiring multiple people to align the holes during installation. This not only makes pre-positioning difficult but also leads to low installation efficiency due to hole misalignment. While some structures use snap-fit ​​connections, which eliminate the hassle of bolt alignment, the clamping force of the snaps is limited. After long-term use, they are prone to loosening due to vibration or external impacts, resulting in gaps or displacement between the grid panels, affecting the overall structural stability and protective performance. Therefore, a photovoltaic module backsheet ventilation and heat dissipation grid is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a ventilation and heat dissipation grille for the back panel of a photovoltaic module, which aims to improve the problem of pre-positioning difficulties in the splicing of traditional grille panels relying on bolt fixing, and the risk of loosening when using snap-fit ​​connections.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a photovoltaic module back panel ventilation and heat dissipation grille, including a back panel, a tempered glass fixedly connected to the top of the back panel, a grille plate fixedly connected to the bottom of the back panel, and an installation mechanism provided at the front of the grille plate;

[0007] The installation mechanism includes a movable plate slidably connected to the inner wall of the left side of the grating plate. A plug-in plate is fixedly connected to the left end of the movable plate. A fixing column is fixedly connected to the front of the movable plate. A protective component is provided at the front of the fixing column. A T-shaped groove is opened on the right side of the grating plate. A plug-in hole is opened on the inner wall of the T-shaped groove. A T-shaped plate is fixedly connected to the left end of the grating plate. Fasteners are provided at the front of the grating plate.

[0008] As a further description of the above technical solution:

[0009] The fastener includes a bolt, the front of the plug plate has a screw hole, the rear of the bolt is threaded to the inner wall of the screw hole, and the outer wall of the bolt penetrates the front side of the grid plate.

[0010] As a further description of the above technical solution:

[0011] The left side of the plug plate matches the inner surface of the plug hole.

[0012] As a further description of the above technical solution:

[0013] The outer wall of the T-shaped plate matches the T-shaped groove.

[0014] As a further description of the above technical solution:

[0015] The bottom of the grating plate is provided with a tapered through groove.

[0016] As a further description of the above technical solution:

[0017] The protective assembly includes a movable column that is slidably connected to the inner wall of the front part of the fixed column. A protective sleeve is hinged to the front part of the movable column. A plug-in column is fixedly connected to the left side of the protective sleeve. A positioning hole is provided at the front part of the back plate.

[0018] As a further description of the above technical solution:

[0019] The outer wall of the plug is engaged with the inner wall of the positioning hole.

[0020] As a further description of the above technical solution:

[0021] The protective sleeve has a circular groove on the side facing the bolt, and the inner diameter of the circular groove is larger than the outer diameter of the bolt.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, through the mutual cooperation between the back plate, tempered glass and its grid plate and other structures, the installation mechanism realizes the rapid pre-positioning of multiple grid plates through the cooperation of T-shaped plate and T-shaped groove, which effectively solves the problems of difficult pre-positioning and low installation efficiency caused by hole position deviation when using traditional bolt through-fixing, and greatly simplifies the splicing process; and the bolt connection avoids the defects of insufficient clamping force and easy loosening of snap-fit ​​connection, thereby improving the overall installation efficiency.

[0024] 2. In this utility model, through the cooperation between the protective components and other structures, the protective sleeve covers the bolt through the circular groove, which can effectively block dust, moisture and other impurities from adhering to the bolt surface, prevent the bolt from being difficult to turn due to rust or dust accumulation, greatly reduce the difficulty of subsequent maintenance and disassembly, and extend the service life of the bolt. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a photovoltaic module backplate ventilation and heat dissipation grille proposed in this utility model;

[0026] Figure 2 This is a three-dimensional schematic diagram of the grille plate of a photovoltaic module backsheet ventilation and heat dissipation grille proposed in this utility model.

[0027] Figure 3 This is a three-dimensional schematic diagram of the movable plate of the ventilation and heat dissipation grille on the back panel of a photovoltaic module proposed in this utility model.

[0028] Figure 4 This is a schematic diagram showing the T-shaped plate and its T-shaped groove of a photovoltaic module back panel ventilation and heat dissipation grille proposed in this utility model.

[0029] Figure 5 This is an enlarged structural diagram of point A of a photovoltaic module backsheet ventilation and heat dissipation grille proposed in this utility model;

[0030] Figure 6 This is a three-dimensional schematic diagram of the T-shaped plate of the ventilation and heat dissipation grille for the back panel of a photovoltaic module proposed in this utility model.

[0031] Legend:

[0032] 1. Back panel; 2. Tempered glass; 3. Grille; 4. Mounting mechanism; 401. Movable plate; 402. Plug-in plate; 403. T-shaped plate; 404. T-slot; 405. Plug-in hole; 406. Bolt; 407. Fixing post; 5. Protective components; 501. Positioning hole; 502. Movable post; 503. Protective sleeve; 504. Plug-in post. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Reference Figures 1-2An embodiment of this utility model provides a photovoltaic module backsheet ventilation and heat dissipation grille, including a backsheet 1, a tempered glass 2 fixedly connected to the top of the backsheet 1, the tempered glass 2 providing protection, a grille plate 3 fixedly connected to the bottom of the backsheet 1, the grille plate 3 providing heat dissipation for the backsheet 1, and an installation mechanism 4 provided at the front of the grille plate 3; the installation mechanism 4 enables the rapid installation of multiple grille plates 3.

[0035] Reference Figure 3 , Figure 4 and Figure 6 The installation mechanism 4 includes a movable plate 401 slidably connected to the inner wall of the left side of the grating plate 3. The movable plate 401 can move horizontally. A plug-in plate 402 is fixedly connected to the left end of the movable plate 401. The two move along the same trajectory. A fixed column 407 is fixedly connected to the front of the movable plate 401. The fixed column 407 is used to control the movable plate 401 to move synchronously. A protective component 5 is provided at the front of the fixed column 407. The protective component 5 can protect the fasteners. A T-shaped groove 404 is provided on the right side of the grating plate 3. A plug-in hole 405 is provided on the inner wall of the T-shaped groove 404. The T-shaped groove 404 is used for pre-positioning. The plug-in hole 405 can connect multiple sets of spliced ​​grating plates 3. A T-shaped plate 403 is fixedly connected to the left end of the grating plate 3. The T-shaped plate 403 is used to complete the connection. A fastener is provided at the front of the grating plate 3. The fastener can limit and fix the plug-in plate 402.

[0036] Reference Figures 2-4 The fasteners include bolts 406. The front of the plug plate 402 has a screw hole. The rear of the bolt 406 is threaded into the inner wall of the screw hole. The outer wall of the bolt 406 penetrates the front side of the grille plate 3. The bolt 406 can limit and fix the plug plate 402. The left side of the plug plate 402 matches the inner surface of the plug hole 405. The two are plugged in to prevent the grille plate 3 from moving forward and detaching after splicing. The outer wall of the T-shaped plate 403 matches the T-shaped groove 404. The two match to facilitate installation. During installation, the T-shaped plate 403 and its T-shaped groove 404 are used for positioning. The bottom of the grille plate 3 has a tapered through groove. The tapered design causes the cross-section of the through groove to gradually narrow when the airflow enters from the bottom, which will accelerate the airflow and enhance the air convection between the grille plate 3 and the back plate 1.

[0037] Reference Figures 3-5The protective component 5 includes a movable column 502 slidably connected to the inner wall of the front part of the fixed column 407. A protective sleeve 503 is hinged to the front part of the movable column 502. The movable column 502 can drive the protective sleeve 503 to move back and forth. A plug-in column 504 is fixedly connected to the left side of the protective sleeve 503. A rubber ball is provided on the outer arc surface of the plug-in column 504. A positioning hole 501 is opened at the front part of the back plate 1. The outer wall of the plug-in column 504 is engaged with the inner wall of the positioning hole 501. When the two are plugged in, the inner diameter of the positioning hole 501 contacts and squeezes the rubber ball, thereby completing the fixation. A circular groove is opened on the side of the protective sleeve 503 facing the bolt 406. The inner diameter of the circular groove is larger than the outer diameter of the bolt 406. The protective sleeve 503 can protect the bolt 406, thereby reducing the dust blown by the air from entering the outside of the bolt 406, thus facilitating the screwing operation when the grid plate 3 is replaced separately in the future.

[0038] Working principle: During installation, the T-shaped plate 403 of one set of grating plates 3 is inserted into the T-shaped groove 404 of another set of grating plates 3 to achieve pre-positioning. The fixed column 407 is pushed to drive the movable plate 401 and the plug-in plate 402 at the left end to move horizontally, so that the plug-in plate 402 is inserted into the plug-in hole 405 of the corresponding grating plate 3. Then, the bolt 406 is passed through the front of the grating plate 3 and threaded into the screw hole of the plug-in plate 402 to complete the limiting and fixing of multiple sets of grating plates 3.

[0039] In the protective component 5, the movable column 502 drives the protective sleeve 503 to move forward. After moving to a certain extent, the protective sleeve 503 is flipped to the left, so that the plug-in column 504 is inserted into the positioning hole 501 of the back plate 1 (the rubber ball is squeezed to enhance the fixation). The protective sleeve 503 covers the bolt 406 through the round groove to reduce dust adhesion and facilitate subsequent tightening. At the same time, the tapered through groove at the bottom of the grid plate 3 uses the "narrow at the top and wide at the bottom" structure to accelerate air convection and enhance the heat dissipation efficiency between the back plate 1 and the grid plate 3. The tempered glass 2 forms top protection for the back plate 1. The whole assembly is quickly spliced ​​through the installation mechanism 4. The combination of protection and heat dissipation design ensures the stable operation of the photovoltaic module.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A photovoltaic module backsheet ventilation and heat dissipation grille, including a backsheet (1), characterized in that: The top of the back panel (1) is fixedly connected to tempered glass (2), the bottom of the back panel (1) is fixedly connected to a grid plate (3), and the front of the grid plate (3) is provided with an installation mechanism (4). The installation mechanism (4) includes a movable plate (401) slidably connected to the inner wall of the left side of the grating plate (3). A plug-in plate (402) is fixedly connected to the left end of the movable plate (401). A fixing post (407) is fixedly connected to the front of the movable plate (401). A protective component (5) is provided at the front of the fixing post (407). A T-shaped groove (404) is provided on the right side of the grating plate (3). A plug-in hole (405) is provided on the inner wall of the T-shaped groove (404). A T-shaped plate (403) is fixedly connected to the left end of the grating plate (3). Fasteners are provided at the front of the grating plate (3).

2. The photovoltaic module backsheet ventilation and heat dissipation grille according to claim 1, characterized in that: The fastener includes a bolt (406), the front of the plug plate (402) is provided with a screw hole, the rear of the bolt (406) is threaded to the inner wall of the screw hole, and the outer wall of the bolt (406) penetrates the front side of the grid plate (3).

3. The photovoltaic module backsheet ventilation and heat dissipation grille according to claim 1, characterized in that: The left side of the plug plate (402) matches the inner surface of the plug hole (405).

4. The photovoltaic module backsheet ventilation and heat dissipation grille according to claim 1, characterized in that: The outer wall of the T-shaped plate (403) matches the T-shaped groove (404).

5. The photovoltaic module backsheet ventilation and heat dissipation grille according to claim 1, characterized in that: The bottom of the grating plate (3) is provided with a tapered through groove.

6. The photovoltaic module backsheet ventilation and heat dissipation grille according to claim 1, characterized in that: The protective component (5) includes a movable column (502) that is slidably connected to the inner wall of the front part of the fixed column (407). A protective sleeve (503) is hinged to the front part of the movable column (502). A plug-in column (504) is fixedly connected to the left side of the protective sleeve (503). A positioning hole (501) is opened at the front part of the back plate (1).

7. The photovoltaic module backsheet ventilation and heat dissipation grille according to claim 6, characterized in that: The outer wall of the plug (504) is engaged with the inner wall of the positioning hole (501).

8. The photovoltaic module backsheet ventilation and heat dissipation grille according to claim 6, characterized in that: The protective sleeve (503) has a circular groove on the side facing the bolt (406), and the inner diameter of the circular groove is larger than the outer diameter of the bolt (406).

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