A board end connector for a photovoltaic inverter

Abstract

The application discloses a board end connector of a photovoltaic inverter, and proposes the following scheme, which comprises an operation table, a circuit board body, a plurality of mounting holes formed in the front end surface of the circuit board body, a mounting column movably arranged in the mounting hole, a shell fixedly connected to the front end surface of the mounting column, a plurality of pin holes formed in the inner side of the front end surface of the circuit board body, and a pin body fixedly connected to one end of the shell and located on the inner side of the pin hole; the board end connector of the photovoltaic inverter can be used for conveniently installing the first board end connector body, the second board end connector body and the third board end connector body, and can be used for conveniently strengthening the connectivity of the first board end connector body, the second board end connector body and the third board end connector body, thereby facilitating signal transmission of the plurality of board end connectors in the later period and being more favorable to normal work of the photovoltaic inverter.

Description

Technical Field

[0001] This invention relates to the field of board-end connector technology, and more particularly to a board-end connector for a photovoltaic inverter. Background Technology

[0002] Photovoltaic inverters are key components of solar photovoltaic (PV) power generation systems. Their core function is to convert the direct current (DC) generated by PV modules into alternating current (AC) that can be connected to the grid or supplied to local loads. During operation, a maximum power point tracking (MPPT) system first ensures efficient power generation from the PV modules. Then, power electronic switches complete the DC-to-AC conversion and ensure stable output. They also feature safety functions such as overvoltage, overcurrent, and islanding protection. Based on application scenarios, they can be categorized into three types: stand-alone inverters, grid-connected inverters, and backup battery inverters. They are widely applicable to residential, medium-sized PV systems, and large-scale commercial and even grid-scale PV projects, providing core technological support for solar power generation of different scales. Board connectors are core interface devices mounted on circuit boards to enable signal and current transmission between the circuit board and external components, cables, or other circuit boards. They are a key component of the signal path and power supply circuit of electronic systems. They typically consist of metal contacts responsible for conducting / transmitting signals, an insulator that fixes the contacts and isolates the circuit, and a housing that provides protection and reinforcement. They can be classified according to parameters such as current rating, mounting method, and pin spacing to meet the needs of various fields such as mobile phones, new energy vehicles, and industrial equipment. In terms of performance, they not only need to complete the basic physical connection, but also need to have electrical properties such as low contact resistance and high insulation resistance, as well as mechanical properties such as resistance to insertion and removal and resistance to vibration and shock. At the same time, they need to adapt to different installation spaces and environmental tolerance requirements to ensure the long-term stable operation of electronic equipment.

[0003] This application improves upon the existing technology. In the existing technology, the board-end connectors used in photovoltaic inverters are connected to the circuit board by soldering during actual installation. Multiple board-end connectors are independent of each other, resulting in poor connectivity. This makes it inconvenient to transmit signals between multiple board-end connectors later, which is not conducive to the normal operation of the photovoltaic inverter.

[0004] It should be noted that the information disclosed in the background section of this invention is intended only to enhance the understanding of the overall background of this invention, and should not be construed as an admission or in any way implying that such information constitutes prior art known to those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a compact magnetic core layered winding structure for a small high input voltage power transformer, which solves the problem in the prior art that the existing board-end connectors used in photovoltaic inverters are poorly connected to the circuit board during actual installation because the board-end connectors are connected by soldering and multiple board-end connectors are independent of each other. This makes it difficult to summarize the signals of multiple board-end connectors later, which is not conducive to the normal operation of the photovoltaic inverter.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A board-end connector for a photovoltaic inverter includes a circuit board body. The front end face of the circuit board body has multiple mounting holes. Mounting posts are movably disposed inside the mounting holes. A housing is fixedly connected to the front end face of each mounting post. Multiple pin holes are formed inside the mounting holes on the front end face of the circuit board body. Pin bodies are engaged inside the pin holes, with one end of each pin body fixedly connected to the end of the housing close to it. The housing comprises a first board-end connector body, a second board-end connector body, and a third board-end connector body. Multiple pin bodies are fixedly connected to both ends of each of the first, second, and third board-end connector bodies. The three welding blocks have limiting plates between the first and second board-end connector bodies and between the second and third board-end connector bodies. Limiting grooves are formed on the outer walls of both ends of the limiting plates, and limiting rectangular blocks are formed on the inner walls of the limiting grooves. The front end face of the housing has a mounting cavity, and mounting grooves are formed on both sides of the mounting cavity. Mounting blocks are movably arranged inside the mounting grooves. Fastening holes are formed on the outer walls of the mounting blocks, and fastening screws are threaded onto the inner walls of the fastening holes. A wire end connecting plate is fixedly connected between two adjacent mounting blocks, and multiple wire end connecting rods are fixedly installed on the front end face of the wire end connecting plate.

[0007] Preferably, a first fixing block is fixedly connected to both sides of the first board-end connector body, a second fixing block is fixedly connected to both sides of the second board-end connector body, and a third fixing block is fixedly connected to both sides of the third board-end connector body.

[0008] Preferably, a first slot is provided on the side of each of the two first fixing blocks that are far apart from each other, a second slot and a third slot are provided on the side of each of the two second fixing blocks that are far apart from each other, and a fourth slot is provided on the side of each of the two third fixing blocks that are far apart from each other.

[0009] Preferably, the second card slot and the third card slot are the same in size and shape, and the first card slot and the fourth card slot are the same in shape and size.

[0010] Preferably, the inner sides of the first and second card slots are each fitted with a first C-shaped plate, and the inner sides of the third and fourth card slots are each provided with a second C-shaped plate.

[0011] Preferably, the upper surfaces of the first and second C-shaped plates are provided with fixing screw holes, and fixing screws are threaded onto the inner walls of the fixing screw holes.

[0012] Preferably, a protective frame is provided on the top of the circuit board body, and the first board end connector body, the second board end connector body and the third board end connector body are located inside the protective frame.

[0013] Preferably, a first welding block is fixedly connected to both sides of the protective frame, and a second welding block is fixedly connected to both ends of the protective frame.

[0014] Preferably, the front end face of the protective frame is provided with three interconnected first heat dissipation slots. The outer walls of the protective frame are provided with a plurality of interconnected second heat dissipation slots, with a minimum of eight second heat dissipation slots, and the second heat dissipation slots are circular in shape.

[0015] Compared with the prior art, the present invention provides a board-end connector for a photovoltaic inverter, which has the following advantages: 1. The board-end connector of this photovoltaic inverter, through the structural design of the circuit board body, first C-shaped board, second C-shaped board, first board-end connector body, second board-end connector body, third board-end connector body, first fixing block, second fixing block, third fixing block, first slot, second slot, third slot, fourth slot, pin hole, mounting hole, mounting post, limiting plate, pin body, limiting groove, fixing screw, fixing screw hole and limiting rectangular block, can facilitate the installation of the first board-end connector body, second board-end connector body and third board-end connector body, and can facilitate the connection of the first board-end connector body, second board-end connector body and third board-end connector body, thereby facilitating signal transmission of multiple board-end connectors in the later stage, which is more conducive to the normal operation of the photovoltaic inverter.

[0016] 2. The board-end connector of this photovoltaic inverter, through the structural design of the circuit board body, protective frame, first welding block, first heat dissipation groove, second heat dissipation groove and second welding block, can protect the electrical components on the circuit board body through the protective frame, thereby improving the safety of the board-end connector during operation. Through the cooperation of multiple second welding blocks, it is easy to weld the protective frame onto the circuit board body, thereby realizing the installation of the protective frame. Through the cooperation of multiple first heat dissipation grooves and multiple second heat dissipation grooves, it is easy to effectively dissipate the heat generated by the electrical components on the circuit board body during operation, avoiding heat accumulation that affects the normal operation of the photovoltaic inverter.

[0017] 3. The board-end connector of this photovoltaic inverter, through its structural design of housing, mounting groove, mounting cavity, line-end connection plate, line-end connection rod, mounting block, fastening screw, and fastening hole, allows for easy assembly of the board-end connector components. When multiple line-end connection plates and line-end connection rods need to be installed on the first, second, and third board-end connector bodies respectively, the mounting block on the line-end connection plate is aligned with the mounting groove on the housing. Then, the line-end connection plate is moved closer to the housing until the mounting block slides into the mounting groove. Finally, multiple fastening screws are aligned with the fastening holes, and one end of the fastening screw is screwed into the fastening hole, thereby fixing the mounting block inside the housing. This completes the assembly of the board-end connector components, making the operation simple and the assembly efficiency high. Attached Figure Description

[0018] Figure 1 This is a partial three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 This is a partial side view structural diagram of the present invention; Figure 3 This is a partial structural diagram of the first and second C-shaped plates, which are the main features of this invention. Figure 4 This is a partial structural diagram of the second board end connector body, which is the main feature of this invention. Figure 5 This is a partial structural diagram illustrating the first and second fixing blocks of the present invention. Figure 6 This is a partial structural diagram illustrating the first board-end connector body and the third board-end connector body of the present invention. Figure 7 This is a partial structural diagram illustrating the pin holes and mounting holes of the present invention. Figure 8 This is a partial structural diagram illustrating the limiting plate and limiting groove of the present invention. Figure 9 This is a partial structural diagram illustrating the mounting groove and mounting block of the present invention; Figure 10This is a partial structural diagram illustrating the fastening screw and fastening hole, which are the main features of this invention.

[0019] In the diagram: 1. Circuit board body; 2. Protective frame; 3. First soldering block; 4. First heat dissipation groove; 5. Second heat dissipation groove; 6. Second soldering block; 7. First C-shaped plate; 8. Second C-shaped plate; 9. First board-end connector body; 10. Second board-end connector body; 11. Third board-end connector body; 12. First fixing block; 13. Second fixing block; 14. Third fixing block; 15. First slot; 16. Second slot; 17. 18. Third slot; 19. Fourth slot; 20. Pin hole; 21. Mounting hole; 22. Mounting post; 23. Limiting plate; 24. Pin body; 25. Limiting groove; 26. Housing; 27. Mounting groove; 28. Mounting cavity; 29. ​​Wire end connecting plate; 30. Wire end connecting rod; 31. Mounting block; 32. Fastening screw; 33. Fastening hole; 34. Fixing screw; 35. Third welding block; 36. Limiting rectangular block. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] Example 1: Reference Figures 3-10A board-end connector for a photovoltaic inverter includes a circuit board body 1. Multiple mounting holes 20 are formed on the front end face of the circuit board body 1. Mounting posts 21 are movably disposed inside the mounting holes 20. A housing 25 is fixedly connected to the front end face of the mounting posts 21. Multiple pin holes 19 are formed on the inner side of the front end face of the circuit board body 1 within the mounting holes 20. Pin thread bodies 23 are engaged inside the pin holes 19, and one end of the pin thread body 23 is fixedly connected to the end of the housing 25 close to it. The housing 25 comprises a first board-end connector body 9, a second board-end connector body 10, and a third board-end connector body 11. Multiple third welding blocks 35 are fixedly connected to both ends of the first board-end connector body 9, the second board-end connector body 10, and the third board-end connector body 11. Limiting plates 22 are provided between the first board-end connector body 9 and the second board-end connector body 10, and between the second board-end connector body 10 and the third board-end connector body 11. Limiting grooves 24 are formed on the outer walls of both ends of the limiting plates 22. Limiting rectangular blocks 36 are provided on the inner sidewall of 4. First fixing blocks 12 are fixedly connected to both sides of the first board-end connector body 9. Second fixing blocks 13 are fixedly connected to both sides of the second board-end connector body 10. Third fixing blocks 14 are fixedly connected to both sides of the third board-end connector body 11. First slots 15 are provided on the sides of the two first fixing blocks 12 that are far apart from each other. Second slots 16 and third slots 17 are respectively provided on the sides of the two second fixing blocks 13 that are far apart from each other. 4. A fourth slot 18 is provided on each side that is far apart from each other. The second slot 16 and the third slot 17 are the same in size and shape. The first slot 15 and the fourth slot 18 are the same in shape and size. A first shaped plate 7 is engaged on the inner side of the first slot 15 and the second slot 16. A second shaped plate 8 is provided on the inner side of the third slot 17 and the fourth slot 18. A fixing screw hole 34 is provided on the upper surface of the first shaped plate 7 and the second shaped plate 8. A fixing screw 33 is threaded on the inner wall of the fixing screw hole 34.

[0023] According to the actual situation, during operation, when it is necessary to install the first board-end connector body 9, the second board-end connector body 10, and the third board-end connector body 11 onto the circuit board body 1, first align the mounting posts 21 and pin bodies 23 on the first board-end connector body 9, the second board-end connector body 10, and the third board-end connector body 11 with the corresponding mounting holes 20 and pin holes 19. Then, move the first board-end connector body 9, the second board-end connector body 10, and the third board-end connector body 11 towards the circuit board body 1 until the mounting posts 21 and pin bodies 23 on the first board-end connector body 9, the second board-end connector body 10, and the third board-end connector body 11 are inserted into the corresponding mounting holes 20 and pin holes 19. Then, heat the third solder block 35 on the first board-end connector body 9, the second board-end connector body 10, and the third board-end connector body 11 with a soldering gun to complete the pre-fixation of the first board-end connector body 9, the second board-end connector body 10, and the third board-end connector body 11. During this process, one end of the limiting rectangular block 36 will slide inside the limiting groove 24 until it reaches the bottom of the limiting groove 24. At this time, the cooperation of multiple limiting rectangular blocks 36 can facilitate the horizontal limiting of the first board end connector body 9, the second board end connector body 10, and the third board end connector body 11. This can effectively prevent the first board end connector body 9, the second board end connector body 10, and the third board end connector body 11 from shifting later, thereby improving the stability after welding. Then, the first C-shaped... The two ends of the plate 7 are respectively inserted into the first slot 15 and the second slot 16, and the two ends of the second C-shaped plate 8 are respectively inserted into the third slot 17 and the fourth slot 18. Then, one end of the fixing screw 33 is screwed into the fixing screw hole 34 to fix the first C-shaped plate 7 and the second C-shaped plate 8, thereby improving the connectivity of the first board end connector body 9, the second board end connector body 10 and the third board end connector body 11, which facilitates the later signal transmission of multiple board end connectors and is more conducive to the normal operation of the photovoltaic inverter. The first board-end connector body 9, the second board-end connector body 10, and the third board-end connector body 11 are all the same in size, model, and parameters. The first board-end connector body 9, the second board-end connector body 10, and the third board-end connector body 11 are respectively assembled from a housing 25, a mounting groove 26, a mounting cavity 27, a wire end connecting plate 28, and a wire end connecting rod 29.

[0024] The front end face of the housing 25 is provided with a mounting cavity 27, and mounting grooves 26 are provided on both sides of the mounting cavity 27. A mounting block 30 is movably arranged inside the mounting groove 26. A fastening hole 32 is provided on the outer wall of the mounting block 30. A fastening screw 31 is threadedly connected to the inner wall of the fastening hole 32. A wire end connecting plate 28 is fixedly connected between two adjacent mounting blocks 30. Multiple wire end connecting rods 29 are fixedly installed on the front end face of the wire end connecting plate 28.

[0025] According to the actual situation, when it is necessary to install multiple wire end connecting plates 28 and wire end connecting rods 29 on the first board end connector body 9, the second board end connector body 10 and the third board end connector body 11 respectively, the mounting block 30 on the wire end connecting plate 28 can be aligned with the mounting groove 26 on the housing 25, and then the wire end connecting plate 28 can be moved closer to the housing 25 until the mounting block 30 slides into the mounting groove 26. Then, multiple fastening screws 31 are aligned with the fastening holes 32 and one end of the fastening screws 31 is screwed into the fastening holes 32, thereby fixing the mounting block 30 in the housing 25, and thus completing the assembly of the board end connector components. The operation is simple and the assembly efficiency is high.

[0026] Example 2: Reference Figures 1-10A board-end connector for a photovoltaic inverter includes a circuit board body 1. Multiple mounting holes 20 are formed on the front end face of the circuit board body 1. Mounting posts 21 are movably disposed inside the mounting holes 20. A housing 25 is fixedly connected to the front end face of the mounting posts 21. Multiple pin holes 19 are formed on the inner side of the front end face of the circuit board body 1 within the mounting holes 20. Pin thread bodies 23 are engaged inside the pin holes 19, and one end of the pin thread body 23 is fixedly connected to the end of the housing 25 close to it. The housing 25 comprises a first board-end connector body 9, a second board-end connector body 10, and a third board-end connector body 11. Multiple third welding blocks 35 are fixedly connected to both ends of the first board-end connector body 9, the second board-end connector body 10, and the third board-end connector body 11. Limiting plates 22 are provided between the first board-end connector body 9 and the second board-end connector body 10, and between the second board-end connector body 10 and the third board-end connector body 11. Limiting grooves 24 are formed on the outer walls of both ends of the limiting plates 22. Limiting rectangular blocks 36 are provided on the inner sidewall of 4. First fixing blocks 12 are fixedly connected to both sides of the first board-end connector body 9. Second fixing blocks 13 are fixedly connected to both sides of the second board-end connector body 10. Third fixing blocks 14 are fixedly connected to both sides of the third board-end connector body 11. First slots 15 are provided on the sides of the two first fixing blocks 12 that are far apart from each other. Second slots 16 and third slots 17 are respectively provided on the sides of the two second fixing blocks 13 that are far apart from each other. 4. A fourth slot 18 is provided on each side that is far apart from each other. The second slot 16 and the third slot 17 are the same in size and shape. The first slot 15 and the fourth slot 18 are the same in shape and size. A first shaped plate 7 is engaged on the inner side of the first slot 15 and the second slot 16. A second shaped plate 8 is provided on the inner side of the third slot 17 and the fourth slot 18. A fixing screw hole 34 is provided on the upper surface of the first shaped plate 7 and the second shaped plate 8. A fixing screw 33 is threaded on the inner wall of the fixing screw hole 34.

[0027] According to the actual situation, during operation, when it is necessary to install the first board-end connector body 9, the second board-end connector body 10, and the third board-end connector body 11 onto the circuit board body 1, first align the mounting posts 21 and pin bodies 23 on the first board-end connector body 9, the second board-end connector body 10, and the third board-end connector body 11 with the corresponding mounting holes 20 and pin holes 19. Then, move the first board-end connector body 9, the second board-end connector body 10, and the third board-end connector body 11 towards the circuit board body 1 until the mounting posts 21 and pin bodies 23 on the first board-end connector body 9, the second board-end connector body 10, and the third board-end connector body 11 are inserted into the corresponding mounting holes 20 and pin holes 19. Then, heat the third solder block 35 on the first board-end connector body 9, the second board-end connector body 10, and the third board-end connector body 11 with a soldering gun to complete the pre-fixation of the first board-end connector body 9, the second board-end connector body 10, and the third board-end connector body 11. During this process, one end of the limiting rectangular block 36 will slide inside the limiting groove 24 until it reaches the bottom of the limiting groove 24. At this time, the cooperation of multiple limiting rectangular blocks 36 can facilitate the horizontal limiting of the first board end connector body 9, the second board end connector body 10, and the third board end connector body 11. This can effectively prevent the first board end connector body 9, the second board end connector body 10, and the third board end connector body 11 from shifting later, thereby improving the stability after welding. Then, the first C-shaped... The two ends of plate 7 are inserted into the first slot 15 and the second slot 16 respectively, and the two ends of the second C-shaped plate 8 are inserted into the third slot 17 and the fourth slot 18 respectively. Then, one end of the fixing screw 33 is screwed into the fixing screw hole 34 to fix the first C-shaped plate 7 and the second C-shaped plate 8, thereby improving the connectivity of the first board end connector body 9, the second board end connector body 10 and the third board end connector body 11, which facilitates the signal transmission of multiple board end connectors in the later stage and is more conducive to the normal operation of the photovoltaic inverter.

[0028] The front end face of the housing 25 is provided with a mounting cavity 27, and mounting grooves 26 are provided on both sides of the mounting cavity 27. A mounting block 30 is movably arranged inside the mounting groove 26. A fastening hole 32 is provided on the outer wall of the mounting block 30. A fastening screw 31 is threadedly connected to the inner wall of the fastening hole 32. A wire end connecting plate 28 is fixedly connected between two adjacent mounting blocks 30. Multiple wire end connecting rods 29 are fixedly installed on the front end face of the wire end connecting plate 28.

[0029] According to the actual situation, when it is necessary to install multiple wire end connecting plates 28 and wire end connecting rods 29 on the first board end connector body 9, the second board end connector body 10 and the third board end connector body 11 respectively, the mounting block 30 on the wire end connecting plate 28 can be aligned with the mounting groove 26 on the housing 25, and then the wire end connecting plate 28 can be moved closer to the housing 25 until the mounting block 30 slides into the mounting groove 26. Then, multiple fastening screws 31 are aligned with the fastening holes 32 and one end of the fastening screws 31 is screwed into the fastening holes 32, thereby fixing the mounting block 30 in the housing 25, and thus completing the assembly of the board end connector components. The operation is simple and the assembly efficiency is high.

[0030] In this invention, a protective frame 2 is provided on the top of the circuit board body 1. The first board end connector body 9, the second board end connector body 10, and the third board end connector body 11 are located inside the protective frame 2. The two sides of the protective frame 2 are fixedly connected to the first welding block 3, and the two ends of the protective frame 2 are fixedly connected to the second welding block 6. The front end face of the protective frame 2 is provided with a connected first heat dissipation groove 4. There are three first heat dissipation grooves 4. Multiple connected second heat dissipation grooves 5 are provided on the outer walls of the protective frame 2. There are no less than eight second heat dissipation grooves 5. The shape of the second heat dissipation grooves 5 is circular.

[0031] Based on actual conditions, during operation, the protective frame 2 can protect the electrical components on the circuit board body 1, thereby improving the safety of the board connector during operation. Through the cooperation of multiple second welding blocks 6, it is easy to weld the protective frame 2 onto the circuit board body 1, thereby realizing the installation of the protective frame 2. Through the cooperation of multiple first heat dissipation slots 4 and multiple second heat dissipation slots 5, it is easy to effectively dissipate the heat generated by the electrical components on the circuit board body 1 during operation, avoiding heat accumulation that affects the normal operation of the photovoltaic inverter.

[0032] Working principle: In actual operation, when multiple wire end connecting plates 28 and wire end connecting rods 29 need to be installed on the first board end connector body 9, the second board end connector body 10 and the third board end connector body 11 respectively, the mounting block 30 on the wire end connecting plate 28 can be aligned with the mounting groove 26 on the housing 25, and then the wire end connecting plate 28 can be moved closer to the housing 25 until the mounting block 30 slides into the mounting groove 26. Then, multiple fastening screws 31 are aligned with the fastening holes 32 and one end of the fastening screws 31 is screwed into the fastening holes 32, thereby fixing the mounting block 30 in the housing 25, thus completing the assembly of the board end connector components. The operation is simple and the assembly efficiency is high.

[0033] Then, when it is necessary to install the first board-end connector body 9, the second board-end connector body 10, and the third board-end connector body 11 onto the circuit board body 1, first align the mounting posts 21 and pin bodies 23 on the first board-end connector body 9, the second board-end connector body 10, and the third board-end connector body 11 with the corresponding mounting holes 20 and pin holes 19. Then, move the first board-end connector body 9, the second board-end connector body 10, and the third board-end connector body 11 towards the circuit board body 1 until the mounting posts 21 and pin bodies 23 on the first board-end connector body 9, the second board-end connector body 10, and the third board-end connector body 11 are inserted into the corresponding mounting holes 20 and pin holes 19. Then, heat the third solder blocks 35 on the first board-end connector body 9, the second board-end connector body 10, and the third board-end connector body 11 with a soldering gun to complete the pre-fixation of the first board-end connector body 9, the second board-end connector body 10, and the third board-end connector body 11. One end of the limiting rectangular block 36 will slide inside the limiting groove 24 until it reaches the bottom of the limiting groove 24. At this time, the cooperation of multiple limiting rectangular blocks 36 can facilitate the horizontal limiting of the first board end connector body 9, the second board end connector body 10, and the third board end connector body 11. This can effectively prevent the first board end connector body 9, the second board end connector body 10, and the third board end connector body 11 from shifting later, thereby improving the stability after welding. Then, the first C-shaped plate 7 is placed... The two ends of the first slot 15 and the second slot 16 are respectively inserted into the first slot 15 and the second slot 16, and the two ends of the second shaped plate 8 are respectively inserted into the third slot 17 and the fourth slot 18. Then, one end of the fixing screw 33 is screwed into the fixing screw hole 34 to fix the first shaped plate 7 and the second shaped plate 8, thereby improving the connectivity of the first board end connector body 9, the second board end connector body 10 and the third board end connector body 11, which facilitates the later signal transmission of multiple board end connectors and is more conducive to the normal operation of the photovoltaic inverter.

[0034] Finally, the protective frame 2 can protect the electrical components on the circuit board body 1, thereby improving the safety of the board connector during operation. The protective frame 2 can be easily soldered onto the circuit board body 1 through the cooperation of multiple second welding blocks 6, thereby realizing the installation of the protective frame 2. The heat generated by the electrical components on the circuit board body 1 during operation can be effectively dissipated through the cooperation of multiple first heat dissipation slots 4 and multiple second heat dissipation slots 5, avoiding heat accumulation that may affect the normal operation of the photovoltaic inverter.

[0035] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A board-end connector for a photovoltaic inverter, comprising a circuit board body (1), characterized in that, The front end face of the circuit board body (1) is provided with multiple mounting holes (20). Mounting posts (21) are movably disposed inside the mounting holes (20). A housing (25) is fixedly connected to the front end face of the mounting posts (21). Multiple pin holes (19) are provided inside the mounting holes (20) on the front end face of the circuit board body (1). A pin thread body (23) is engaged inside the pin holes (19), and one end of the pin thread body (23) is fixedly connected to the end of the housing (25) close to it. The housing (25) comprises a first board-end connector body (9), a second board-end connector body (10), and a third board-end connector body (11). Multiple third solder blocks (35) are fixedly connected to both ends of the first board-end connector body (9), the second board-end connector body (10), and the third board-end connector body (11). 9) Limiting plates (22) are provided between the second board end connector body (10) and the second board end connector body (10) and the third board end connector body (11). Limiting grooves (24) are provided on the outer walls of both ends of the limiting plates (22). Limiting rectangular blocks (36) are provided on the inner side walls of the limiting grooves (24). The front end face of the housing (25) is provided with a mounting cavity (27). Mounting grooves (26) are provided on both sides of the mounting cavity (27). Mounting blocks (30) are movably arranged inside the mounting grooves (26). Fastening holes (32) are provided on the outer wall of the mounting blocks (30). Fastening screws (31) are threadedly connected to the inner wall of the fastening holes (32). A wire end connecting plate (28) is fixedly connected between two adjacent mounting blocks (30). Multiple wire end connecting rods (29) are fixedly installed on the front end face of the wire end connecting plate (28).

2. The board-end connector for a photovoltaic inverter according to claim 1, characterized in that, The first board-end connector body (9) is fixedly connected to both sides of a first fixing block (12), the second board-end connector body (10) is fixedly connected to both sides of a second fixing block (13), and the third board-end connector body (11) is fixedly connected to both sides of a third fixing block (14).

3. The board-end connector for a photovoltaic inverter according to claim 2, characterized in that, The two first fixing blocks (12) are provided with a first slot (15) on the side away from each other, the two second fixing blocks (13) are provided with a second slot (16) and a third slot (17) on the side away from each other respectively, and the two third fixing blocks (14) are provided with a fourth slot (18) on the side away from each other.

4. The board-end connector for a photovoltaic inverter according to claim 3, characterized in that, The second card slot (16) and the third card slot (17) are the same in size and shape, and the first card slot (15) and the fourth card slot (18) are the same in shape and size.

5. The board-end connector for a photovoltaic inverter according to claim 4, characterized in that, The inner sides of the first slot (15) and the second slot (16) are both fitted with a first shaped plate (7), and the inner sides of the third slot (17) and the fourth slot (18) are both provided with a second shaped plate (8).

6. The board-end connector for a photovoltaic inverter according to claim 5, characterized in that, The upper surfaces of the first sprue plate (7) and the second sprue plate (8) are provided with fixing screw holes (34), and fixing screws (33) are threaded on the inner walls of the fixing screw holes (34).

7. The board-end connector for a photovoltaic inverter according to claim 1, characterized in that, A protective frame (2) is provided on the top of the circuit board body (1), and the first board end connector body (9), the second board end connector body (10) and the third board end connector body (11) are located inside the protective frame (2).

8. The board-end connector for a photovoltaic inverter according to claim 7, characterized in that, The protective frame (2) is fixedly connected to both sides of the first welding block (3), and the protective frame (2) is fixedly connected to both ends of the second welding block (6).

9. A board-end connector for a photovoltaic inverter according to claim 8, characterized in that, The front end face of the protective frame (2) is provided with a first heat dissipation groove (4) that is connected through it. There are three first heat dissipation grooves (4). Multiple second heat dissipation grooves (5) are provided on the outer walls of the protective frame (2). There are no less than eight second heat dissipation grooves (5). The shape of the second heat dissipation grooves (5) is circular.

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