A novel photovoltaic module quick-connection medium-voltage block and connection method

Abstract

This invention discloses a novel photovoltaic module quick-connect medium-voltage block and connection method, including a medium-voltage block female head (2) and a medium-voltage block male head (3). The medium-voltage block female head (2) and the medium-voltage block male head (3) adopt a snap-lock structure. The medium-voltage block female head (2) adopts a Z-shaped structure and has a female bayonet (4) on the side. A spring (5) and a ball bearing (6) are provided inside the female bayonet (4). The medium-voltage block male head (3) adopts a U-shaped structure and has a male bayonet (7) on the side. The male bayonet (7) is provided with a large and small head component. The medium-voltage block male head (3) is inserted into the female bayonet (4) through the male bayonet (7). Under the action of the spring (5) and the ball bearing (6), the connection is locked, thereby avoiding the operator from directly applying force to the photovoltaic module glass surface, reducing module microcracks, and improving installation efficiency.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic module installation technology, and more specifically to a medium-pressure block and its connection method for rapid connection between photovoltaic modules and photovoltaic supports in distributed photovoltaic power stations. Background Technology

[0002] In recent years, in order to implement the national "dual-carbon" strategic goal and build a green and low-carbon lifestyle, my country has begun to vigorously develop the renewable energy industry, among which photovoltaic power generation has rapidly emerged. During the installation of distributed photovoltaic modules, to better cope with the impact of extreme weather on the module array, the conventional practice is to fix four pressure blocks along the long side of the module on the photovoltaic support, so that the photovoltaic module and the photovoltaic support can be better connected as a whole.

[0003] However, due to the standardized dimensions of photovoltaic modules—taking the common 2382×1134mm module as an example—the long and short sides of the module are relatively large. Regardless of the direction in which the intermediate pressure block is fixed, one block will always be far from the work surface. Workers will need to use their hands or knees to contact the module's glass surface to tighten the bolts. This inevitably leads to small internal cracks, and in severe cases, can cause the entire module to shatter, resulting in insufficient power generation compared to design requirements. Furthermore, traditional bolted connections are inefficient and cannot meet the demands of rapid construction in large-scale photovoltaic power plants. Summary of the Invention

[0004] The technical problem this invention aims to solve is that in existing photovoltaic modules, the pressure blocks are connected by bolts, which makes it easy for workers to come into contact with the glass surface of the module during installation, leading to microcracks in the module and affecting power generation efficiency and output.

[0005] To address the aforementioned technical problems, this invention provides a novel quick-connect medium-voltage block for photovoltaic modules, comprising a female medium-voltage block connector and a male medium-voltage block connector. The female and male medium-voltage block connectors employ a snap-fit ​​self-locking structure to achieve boltless, rapid connection of the photovoltaic modules. Specifically, The medium-pressure block female head is fixed on the photovoltaic bracket guide rail. The medium-pressure block female head adopts a Z-shaped structure. The bottom end of the medium-pressure block female head is provided with a bolt hole, and a bolt is inserted into the bolt hole. The side of the medium-pressure block female head is provided with a female bayonet, and a spring and a ball are provided in the female bayonet. Thus, only one bolt tightening is required when installing the female head, and subsequent photovoltaic module installation does not require contact with the bolt again. The male connector of the medium-pressure block is fixed on the photovoltaic module. The male connector of the medium-pressure block adopts a U-shaped structure. The width of the aluminum block at the bottom of the male connector of the medium-pressure block is adapted to the groove width of the photovoltaic bracket guide rail. The side of the male connector of the medium-pressure block is provided with a male bayonet. The male bayonet is provided with a large and small head component, so that the male connector and the female connector can be inserted and matched, and the bottom aluminum block can achieve pre-positioning with the guide rail. The male connector of the medium-pressure block is inserted into the female connector through the male bayonet, and is locked in place by the action of the spring and the ball bearing, thereby preventing the operator from directly applying force to the glass surface of the photovoltaic module.

[0006] Preferably, the bottom end of the intermediate pressure block female head is provided with a locking block, which is locked onto the photovoltaic bracket guide rail to prevent the intermediate pressure block female head from sliding on the photovoltaic bracket guide rail and to ensure the positional accuracy of the female head on the guide rail.

[0007] Preferably, the female bayonet includes an inner cylindrical channel, and the spring and the ball are disposed in the inner cylindrical channel, so that the ball moves in a direction within the inner cylindrical channel and automatically resets, thereby ensuring that the movement trajectory of the ball is stable and the rebound is reliable during the locking process.

[0008] Preferably, the two ball bearing holes of the female retainer are slightly larger than the bottom bolt hole of the bolt, so that the ball bearings can roll smoothly within the female retainer, thereby avoiding jamming or wear of the ball bearings during the clamping process.

[0009] Preferably, the width of the bottom aluminum block of the male intermediate pressure block is the same as the groove width of the photovoltaic bracket guide rail, so that the bottom aluminum block of the male intermediate pressure block is embedded in the groove of the photovoltaic bracket guide rail for positioning, thereby ensuring the fitting accuracy between the male and the guide rail and ensuring that the male and female bayonets are accurately aligned.

[0010] Preferably, the male bayonet's large and small end components include a large end and a small end. The large end is close to the body of the male middle pressure block, and the small end is far away from the body of the male middle pressure block, so that when the male bayonet is inserted, the ball automatically retracts and after insertion, the ball automatically locks into the neck of the large and small end components, forming a reliable mechanical self-locking mechanism.

[0011] Preferably, both the female and male heads of the intermediate pressure block are made of aluminum alloy, thereby reducing weight and improving corrosion resistance while ensuring structural strength, and extending the service life of the intermediate pressure block in outdoor environments.

[0012] This invention also provides a novel connection method for a photovoltaic module quick-connect intermediate voltage block. The method utilizes the novel photovoltaic module quick-connect intermediate voltage block as described above, wherein the female and male ends of the intermediate voltage block employ a snap-fit ​​self-locking connection method to reduce contact between operators and the glass surface of the photovoltaic module and prevent microcracks. Specifically, the connection method includes the following steps: The medium-pressure block head is fixed to the photovoltaic bracket guide rail by the bolt; The male connector of the medium-pressure block is fixed to the photovoltaic module; Align the male bayonet of the medium pressure block male head with the female bayonet of the medium pressure block female head, so that the large and small head components of the male bayonet press the ball and compress the spring until the large and small head components are fully inserted into the female bayonet. Then, the spring rebounds and pushes the ball to lock in the neck of the large and small head components, thereby achieving a snap-fit ​​and locking, thus completing the boltless quick installation of the photovoltaic module.

[0013] Preferably, before inserting the male connector of the intermediate voltage block into the female bayonet, the position of the photovoltaic module is adjusted so that the male connector of the intermediate voltage block is aligned with the female connector of the intermediate voltage block, so that the male bayonet can be smoothly inserted into the female bayonet, thereby avoiding damage to the buckle or failure to engage properly due to misalignment during the insertion process.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: By replacing traditional bolt connections with a snap-on self-locking structure, operators do not need to apply direct force to the glass surface of the photovoltaic modules during installation, which fundamentally avoids microcracks in the modules caused by contact and improves the power generation efficiency and output of the modules. The automatic locking mechanism using springs and ball bearings in conjunction with large and small head components enables boltless and rapid installation of photovoltaic modules, significantly improving installation efficiency and making it particularly suitable for large-scale construction of large photovoltaic power plants. The medium-pressure block female head adopts a Z-shaped structure, with a locking block at the bottom to lock onto the photovoltaic bracket guide rail, preventing the female head from slipping and ensuring the stability and reliability of the connection; The male connector of the medium-pressure block adopts a U-shaped structure, with the bottom aluminum block embedded in the guide rail groove of the photovoltaic bracket for positioning, so that the male connector and the guide rail form a precise fit and ensure accurate alignment when the buckle is inserted; The springs and balls inside the female bayonet automatically retract when the male bayonet is inserted and automatically reset the locking mechanism after insertion, forming a reliable self-locking connection with good wind resistance and the ability to cope with extreme weather conditions. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the photovoltaic intermediate voltage block mother head of the present invention.

[0016] Figure 2 This is a schematic diagram of the structure of the male connector of the photovoltaic intermediate voltage block of the present invention.

[0017] Figure 3 This is a schematic diagram of the connection of the photovoltaic medium-voltage block in this invention.

[0018] Figure 4 This is a schematic diagram showing the arrangement of the pressure block in the quick-connect section of the present invention.

[0019] In the diagram: 1. Photovoltaic module; 2. Medium-voltage block female head; 3. Medium-voltage block male head; 4. Female bayonet; 5. Spring; 6. Ball bearing; 7. Male bayonet; 8. Bolt; 9. Bracket guide rail; 10. Locking block. Detailed Implementation

[0020] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0021] like Figure 1 As shown, the intermediate pressure block female head 2 of the present invention adopts a Z-shaped structure and is made of aluminum alloy. A bolt hole is provided at the bottom end of the intermediate pressure block female head 2, and an M8 bolt 8 passes through the bolt hole, thereby fixing the intermediate pressure block female head 2 to the photovoltaic bracket guide rail 9. To further prevent the intermediate pressure block female head 2 from sliding along the guide rail direction on the photovoltaic bracket guide rail 9, a locking block 10 is also provided at the bottom end of the intermediate pressure block female head 2. The locking block 10 is engaged within the groove of the photovoltaic bracket guide rail 9, forming a limiting fit.

[0022] The side of the female head 2 of the intermediate pressure block is provided with a female bayonet 4. The female bayonet 4 includes an inner cylindrical channel, in which a spring 5 and a ball bearing 6 are disposed. One end of the spring 5 abuts against the inner wall of the inner cylindrical channel, and the other end abuts against the ball bearing 6. The ball bearing 6 can move axially within the inner cylindrical channel and automatically reset under the action of the spring 5. The two ball holes of the female bayonet 4 are slightly larger than the bottom bolt hole of the M8 bolt 8, so that the ball bearing 6 can roll smoothly within the female bayonet 4 and avoid jamming.

[0023] like Figure 2 As shown, the male connector 3 of the intermediate pressure block of the present invention adopts a U-shaped structure and is also made of aluminum alloy. The male connector 3 of the intermediate pressure block is fixed to the photovoltaic module 1, specifically by means of riveting or bolt connection to the frame of the photovoltaic module 1. The width of the bottom aluminum block of the male connector 3 is the same as the groove width of the photovoltaic bracket guide rail 9, so that the bottom aluminum block can be embedded in the groove of the photovoltaic bracket guide rail 9 to achieve precise positioning.

[0024] The male connector 3 of the intermediate pressure block has a male bayonet 7 on its side. The male bayonet 7 is provided with a large-small end component, which includes a large end and a small end. The large end is close to the body of the male connector 3 of the intermediate pressure block, and the small end is away from the body of the male connector 3 of the intermediate pressure block. The outer diameter of the large end is larger than the outer diameter of the small end, and a neck transition is formed between the two.

[0025] like Figure 3As shown, during installation, the female connector 2 of the intermediate pressure block is first fixed to the photovoltaic bracket guide rail 9 using the M8 bolt 8, and the male connector 3 of the intermediate pressure block is fixed to the photovoltaic module 1. Then, the position of the photovoltaic module 1 is adjusted so that the male connector 3 of the intermediate pressure block and the female connector 2 of the intermediate pressure block are aligned. Subsequently, the male bayonet 7 of the male connector 3 is aligned and inserted into the female bayonet 4 of the female connector 2 of the intermediate pressure block.

[0026] During insertion, the male bayonet 7's smaller end first contacts the ball bearing 6. As the insertion depth increases, the larger end presses against the ball bearing 6, causing it to retract inward along the hollow cylindrical channel and compress the spring 5. When the larger end is fully inserted into the female bayonet 4, the larger end passes the ball bearing 6. At this point, the spring 5 rebounds, pushing the ball bearing 6 into the neck of the larger end, forming a mechanical self-locking mechanism. At this point, the male bayonet 7 cannot be pulled out in the opposite direction, achieving reliable locking and thus completing the boltless, rapid installation of the photovoltaic module 1.

[0027] Throughout the installation process, the operator only needs to push the photovoltaic module 1 so that the male bayonet 7 can be inserted into the female bayonet 4. There is no need to apply pressure to the glass surface of the photovoltaic module 1 directly with hands or tools, which fundamentally avoids microcracks in the module caused by contact.

[0028] like Figure 4 As shown, in the arrangement of a photovoltaic module array, the quick-connect intermediate pressure block of the present invention can be placed between two adjacent photovoltaic modules 1, serving as a middle connection and clamping function. The female end 2 of the quick-connect intermediate pressure block is fixed to the photovoltaic support guide rail 9, and the male end 3 of the intermediate pressure block is fixed to two adjacent photovoltaic modules 1 respectively, realizing rapid splicing between modules through snap-fit ​​connection. At the same time, the photovoltaic module 1 is also equipped with edge pressure blocks and traditional intermediate pressure blocks around its perimeter, which together fix the photovoltaic module 1 to the photovoltaic support.

[0029] Both the intermediate pressure block female head 2 and the intermediate pressure block male head 3 are made of aluminum alloy, which has good corrosion resistance and strength, and can adapt to the long-term operating environment of outdoor photovoltaic power stations. The spring 5 can be made of stainless steel spring steel to ensure that it maintains its elastic performance during long-term compression and rebound. The ball bearing 6 can be made of bearing steel ball, with a smooth surface and low rolling resistance, ensuring the smoothness and reliability of the locking action.

[0030] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A novel photovoltaic module quick-connect intermediate voltage block, comprising an intermediate voltage block female connector (2) and an intermediate voltage block male connector (3), characterized in that, The intermediate pressure block female connector (2) and the intermediate pressure block male connector (3) adopt a snap-fit ​​self-locking structure to achieve boltless and quick connection of photovoltaic modules; specifically, The medium pressure block female head (2) is fixed on the photovoltaic bracket guide rail (9). The medium pressure block female head (2) adopts a Z-shaped structure. The bottom end of the medium pressure block female head (2) is provided with a bolt hole. A bolt (8) is inserted in the bolt hole. A female bayonet (4) is provided on the side of the medium pressure block female head (2). A spring (5) and a ball (6) are provided in the female bayonet (4). The medium-pressure block male head (3) is fixed on the photovoltaic module (1). The medium-pressure block male head (3) adopts a U-shaped structure. The width of the aluminum block at the bottom of the medium-pressure block male head (3) is adapted to the groove width of the photovoltaic bracket guide rail (9). The side of the medium-pressure block male head (3) is provided with a male bayonet (7). The male bayonet (7) is provided with large and small head components. The male connector (3) of the medium pressure block is inserted into the female connector (4) through the male connector (7), and is locked in place by the action of the spring (5) and the ball (6), thereby preventing the operator from directly applying force to the glass surface of the photovoltaic module.

2. The novel photovoltaic module quick-connect medium-voltage block according to claim 1, characterized in that, The bottom end of the medium pressure block female head (2) is provided with a locking block (10), which is locked on the photovoltaic bracket guide rail (9) to prevent the medium pressure block female head (2) from sliding on the photovoltaic bracket guide rail (9).

3. The novel photovoltaic module quick-connect medium-voltage block according to claim 1, characterized in that, The female bayonet (4) includes an inner cylindrical channel, and the spring (5) and the ball (6) are disposed in the inner cylindrical channel, so that the ball (6) moves in a direction within the inner cylindrical channel and automatically resets.

4. The novel photovoltaic module quick-connect medium-voltage block according to claim 1, characterized in that, The two ball holes of the female bayonet (4) are slightly larger than the bottom bolt hole of the bolt (8) so that the ball (6) can roll smoothly in the female bayonet (4).

5. The novel photovoltaic module quick-connect medium-voltage block according to claim 1, characterized in that, The width of the bottom aluminum block of the male medium pressure block (3) is the same as the groove width of the photovoltaic bracket guide rail (9), so that the bottom aluminum block of the male medium pressure block (3) is embedded in the groove of the photovoltaic bracket guide rail (9) for positioning.

6. The novel photovoltaic module quick-connect medium-voltage block according to claim 1, characterized in that, The male bayonet (7) has a large end and a small end. The large end is close to the body of the medium pressure block male head (3), and the small end is far away from the body of the medium pressure block male head (3), so that when the male bayonet (7) is inserted, the ball (6) automatically retracts and after insertion, the ball (6) automatically locks into the neck of the large and small end components.

7. The novel photovoltaic module quick-connect medium-voltage block according to claim 1, characterized in that, Both the female connector (2) and the male connector (3) of the intermediate pressure block are made of aluminum alloy.

8. A connection method for a novel photovoltaic module quick-connect intermediate voltage block, comprising the novel photovoltaic module quick-connect intermediate voltage block as described in any one of claims 1 to 7, characterized in that, The intermediate pressure block female connector (2) and the intermediate pressure block male connector (3) adopt a snap-fit ​​self-locking connection method to reduce the contact between operators and the photovoltaic module glass surface and avoid the generation of microcracks; specifically, The connection method includes the following steps: The medium pressure block head (2) is fixed to the photovoltaic bracket guide rail (9) by the bolt (8); The male connector (3) of the medium-pressure block is fixed to the photovoltaic module (1); Align the male bayonet (7) of the male connector (3) with the female bayonet (4) of the female connector (2), so that the large and small head components of the male bayonet (7) press the ball (6) and compress the spring (5) until the large and small head components are fully inserted into the female bayonet (4). Then, the spring (5) rebounds and pushes the ball (6) to lock in the neck of the large and small head components, thereby completing the boltless quick installation of the photovoltaic module.

9. The connection method of the novel photovoltaic module quick-connect medium-voltage block according to claim 8, characterized in that, Before inserting the male connector (3) of the medium-voltage block into the female bayonet (4), adjust the position of the photovoltaic module (1) so that the male connector (3) of the medium-voltage block is aligned with the female connector (2) of the medium-voltage block so that the male bayonet (7) can be smoothly inserted into the female bayonet (4).

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