Miniature inverter suitable for distributed photovoltaic

Abstract

The utility model belongs to the technical field of miniature inverters, and particularly relates to a miniature inverter suitable for distributed photovoltaics, which comprises an inverter main body, a connecting block is fixedly connected to the side wall of the inverter main body, a limiting block is fixedly connected to the lower surface of the connecting block, and a spring groove is formed in the side wall of the limiting block. First springs are fixedly connected to the inner walls of the spring grooves, limiting pins are fixedly connected to one ends of the first springs, inclined grooves are formed in the side walls of the limiting pins, first moving grooves are formed in the inner walls of the inclined grooves, second moving grooves are formed in the upper surfaces of the connecting blocks, moving frames are arranged in the second moving grooves, and clamping pins are fixedly connected to the lower surfaces of the moving frames. And a mounting strip is arranged below the connecting block. The utility model has a reasonable structure, and can realize quick disassembly and assembly without the help of tools.

Description

Technical Field

[0001] This utility model belongs to the field of micro inverter technology, specifically a micro inverter suitable for distributed photovoltaic systems. Background Technology

[0002] In the wave of energy transition, distributed photovoltaic (PV) systems are gaining popularity due to their ability to efficiently utilize idle space and provide localized power supply. Micro-inverters suitable for distributed PV systems, which can be connected to single or small numbers of PV modules for precise control, are becoming a key focus in the industry, providing strong support for the efficient and stable operation of distributed PV systems.

[0003] Existing microinverters for distributed photovoltaic systems are typically mounted on metal strips on the back of photovoltaic modules. Generally, corresponding threaded holes are drilled in the metal strips, and the microinverters are then mounted onto the metal strips using bolts. This requires additional tools, and bolt installation is relatively time-consuming. Summary of the Invention

[0004] The purpose of this invention is to provide a micro inverter suitable for distributed photovoltaic systems, which can be quickly installed and disassembled without the need for tools.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A micro inverter suitable for distributed photovoltaic systems is provided, comprising an inverter body. Two connecting blocks are fixedly connected to the side wall of the inverter body. A limiting block is fixedly connected to the lower surface of each connecting block. Two spring grooves are formed on the side wall of each limiting block. A first spring is fixedly connected to the inner wall of each spring groove. A limiting pin is fixedly connected to one end of each first spring. A slanted groove is formed on the side wall of each limiting pin. A first displacement pin is formed on the inner wall of the slanted groove. The connecting block has a second movable groove on its upper surface, a movable frame inside the second movable groove, and two locking pins fixedly connected to the lower surface of the movable frame. The locking pins are located inside the inclined groove. The connecting block has two mounting strips below it. The mounting strips have a first limiting groove on their upper surface, and a second limiting groove is formed on the inner wall of the first limiting groove. The limiting block is located inside the first limiting groove, and the limiting pin is located inside the second limiting groove.

[0006] Optionally, a second spring is fixedly connected to the inner bottom of the second movable groove, and one end of the second spring is fixedly connected to the lower surface of the movable frame.

[0007] Optionally, the limiting block has a threaded groove inside, the inner surface of the threaded groove is threaded with a threaded post, the upper surface of the threaded post is fixedly connected with a torsion plate, and the second spring is sleeved on the outer surface of the threaded post.

[0008] Optionally, the upper surface of the movable frame is provided with a rotating groove, and the threaded post is located inside the rotating groove.

[0009] Optionally, the lower surface of the connecting block is fixedly connected with two limiting posts, and the upper surface of the mounting strip is provided with two third limiting grooves, with the limiting posts located inside the third limiting grooves.

[0010] Optionally, the sidewall of the connecting block is provided with auxiliary grooves, and the number of auxiliary grooves is two.

[0011] Optionally, a heat-absorbing plate is fixedly connected to the lower surface of the inverter body, and heat dissipation fins are fixedly connected to the lower surface of the heat-absorbing plate, wherein there are multiple heat dissipation fins.

[0012] Optionally, the side wall of the inverter body is fixedly connected with a mounting block, and there are two mounting blocks. A fixed shaft is fixedly connected between adjacent mounting blocks, and a pull ring is sleeved on the outer surface of the fixed shaft.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This utility model includes an inverter body, a mounting strip, a movable frame, a second spring, an auxiliary groove, a locking pin, a limiting pin, an inclined groove, a first spring, a limiting post, a third limiting groove, a limiting block, a first limiting groove, a connecting block, and a second limiting groove. When installing the inverter body onto the mounting strip, the operator uses both thumbs to press down on the movable frame, causing it to move downwards. This causes the second spring to retract. The other four fingers are positioned in the auxiliary groove to provide leverage. As the movable frame moves downwards, the locking pin moves downwards simultaneously. Because the locking pin is located inside the inclined groove, its downward movement causes adjacent limiting pins to move closer together, causing the first spring to retract. Align the limiting post with the third limiting slot and the limiting block with the first limiting slot, thereby moving the inverter body, connecting block, and limiting block downwards. This allows the limiting post to enter the third limiting slot and the limiting block to enter the first limiting slot. When the inverter body, connecting block, and limiting block can no longer move, release your thumb. The first spring returns, resetting the limiting pin, and the second spring returns, resetting the moving frame. At this point, the limiting pin is inside the second limiting slot, completing the installation of the inverter body. Similarly, when disassembly is needed, press down on the moving frame, causing adjacent limiting pins to move closer together and disengage from the second limiting slot, thus completing disassembly. This invention allows for quick assembly and disassembly without the need for tools.

[0015] This utility model includes an inverter body, a torsion disc, a threaded post, a first limiting groove, a limiting block, a limiting pin, a second limiting groove, and a connecting block. After the inverter body is installed, the torsion disc is turned to rotate the threaded post, causing it to move downwards and contact the bottom of the first limiting groove. Continuing to turn the torsion disc will prevent the threaded post from moving further downwards. When the threaded post can no longer move downwards, it will provide an upward reaction force to the limiting block through the threaded groove, thus causing the limiting block to be subjected to an upward force. This, in turn, causes the upper surface of the limiting pin to generate a greater compressive force with the top of the second limiting groove, making the limiting block more tightly installed, and thus making the connecting block and the inverter body more tightly installed. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a first-view overall structural diagram of the present invention;

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A;

[0020] Figure 4 This is a cross-sectional view of the connecting block of this utility model;

[0021] Figure 5 This is a cross-sectional view of the mobile frame of this utility model;

[0022] Figure 6 This is a cross-sectional view of the limiting pin of this utility model;

[0023] Figure 7 This is a cross-sectional view of the threaded column of this utility model;

[0024] Figure 8 This is a cross-sectional view of the installation strip of this utility model;

[0025] Figure 9 This is a schematic diagram of the structure of the heat absorber plate of this utility model;

[0026] Figure 10 This is a schematic diagram of the overall structure of the present invention from a second perspective.

[0027] In the diagram: 1. Inverter body; 2. Connecting block; 3. Limiting block; 4. Spring groove; 5. First spring; 6. Limiting pin; 7. Inclined groove; 8. First moving groove; 9. Second moving groove; 10. Moving frame; 11. Locking pin; 12. Mounting strip; 13. First limiting groove; 14. Second limiting groove; 15. Second spring; 16. Threaded groove; 17. Threaded post; 18. Torque disc; 19. Rotating groove; 20. Auxiliary groove; 21. Heat absorption plate; 22. Heat dissipation fins; 23. Mounting block; 24. Fixed shaft; 25. Pull ring; 26. Third limiting groove; 27. Limiting post. Detailed Implementation

[0028] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0030] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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 utility model 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 utility model.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] Reference Figure 1-10The present invention will now be described. A micro inverter suitable for distributed photovoltaic systems includes an inverter body 1. Two connecting blocks 2 are fixedly connected to the side wall of the inverter body 1. A limit block 3 is fixedly connected to the lower surface of the connecting block 2. A spring groove 4 is formed on the side wall of the limit block 3. Two spring grooves 4 are formed. A first spring 5 is fixedly connected to the inner wall of the spring groove 4. A limit pin 6 is fixedly connected to one end of the first spring 5. An inclined groove 7 is formed on the side wall of the limit pin 6. A first moving groove 8 is formed on the inner wall of the inclined groove 7. A second moving groove 9 is formed on the upper surface of the connecting block 2. A moving frame 10 is arranged inside the second moving groove 9. Two locking pins 11 are fixedly connected to the lower surface of the inverter body 1. The locking pins 11 are located inside the inclined groove 7. Two mounting strips 12 are provided below the connecting block 2. The upper surface of the mounting strip 12 has a first limiting groove 13. The inner wall of the first limiting groove 13 has a second limiting groove 14. There are two second limiting grooves 14. The limiting block 3 is located inside the first limiting groove 13, and the limiting pin 6 is located inside the second limiting groove 14. When the inverter body 1 needs to be installed on the mounting strip 12, the operator presses the moving frame 10 downward with both thumbs, causing the moving frame 10 to move downward. The second spring 15 contracts, and the other four fingers are all located in the auxiliary groove 20 to provide a point of force. The moving frame 10 moves down, causing the locking pin 11 to move down synchronously. Since the locking pin 11 is located inside the inclined groove 7, the downward movement of the locking pin 11 will cause the adjacent limiting pins 6 to move closer to each other. The first spring 5 contracts, aligning the limiting post 27 with the third limiting groove 26 and the limiting block 3 with the first limiting groove 13, thereby causing the inverter body 1, connecting block 2, and limiting block 3 to move down, and then the limiting post 27 enters the third limiting groove 26 and the limiting block 3 enters the first limiting groove 13. When the inverter body 1, connecting block 2, and limiting block 3 can no longer move, Release your thumb that is pressing down on the movable frame 10. The first spring 5 will rebound, causing the limit pin 6 to reset. The second spring 15 will rebound, causing the movable frame 10 to reset. At this time, the limit pin 6 is located inside the second limit groove 14, completing the installation of the inverter body 1. Similarly, when disassembling, press down on the movable frame 10, causing the adjacent limit pins 6 to move closer to each other and disengage from the second limit groove 14, thus completing the disassembly. The inner bottom of the second movable groove 9 is fixedly connected to the second spring 15. The second spring 15 can assist the movable frame 10 in resetting after it moves down. One end of the second spring 15 is fixedly connected to the lower surface of the movable frame 10.

[0033] This invention provides a micro inverter suitable for distributed photovoltaic systems, which, compared with existing technologies, allows for quick assembly and disassembly without the need for tools.

[0034] Please refer to another embodiment of this utility model as well. Figures 1 to 10The limiting block 3 has a threaded groove 16 inside, and a threaded post 17 is threadedly connected to the inner surface of the threaded groove 16. A torsion plate 18 is fixedly connected to the upper surface of the threaded post 17. The second spring 15 is sleeved on the outer surface of the threaded post 17. After the inverter body 1 is installed, the torsion plate 18 can be turned to rotate the threaded post 17, causing the threaded post 17 to move down and contact the inner bottom of the first limiting groove 13. At this time, continuing to turn the torsion plate 18 will prevent the threaded post 17 from moving down further. When the threaded post 17 can no longer move down, The threaded groove 16 provides an upward reaction force to the limiting block 3, thereby subjecting the limiting block 3 to an upward force. This results in a greater compressive force between the upper surface of the limiting pin 6 and the inner top of the second limiting groove 14, making the limiting block 3 more tightly installed. Consequently, the connecting block 2 and the inverter body 1 are installed more tightly. The upper surface of the moving frame 10 has a rotating groove 19, and the threaded post 17 is located inside the rotating groove 19. Two limiting posts 27 are fixedly connected to the lower surface of the connecting block 2. The mounting strip 1... The upper surface of the connector 2 has two third limiting grooves 26. A limiting post 27 is located inside the third limiting groove 26. An auxiliary groove 20 is provided on the side wall of the connector 2. The auxiliary groove 20 provides a leverage point for the operator when installing the inverter body 1. One auxiliary groove 20 corresponds to the insertion of four fingers of one hand, preventing instability when the inverter body 1 is installed with its upper surface facing down. There are two auxiliary grooves 20. A heat-absorbing plate 21 is fixedly connected to the lower surface of the inverter body 1. The heat absorption plate 21 can absorb the heat emitted by the inverter body 1 when it is working, and the heat absorbed by the heat absorption plate 21 is dissipated through the heat dissipation fins 22. The heat dissipation fins 22 are fixedly connected to the lower surface of the heat absorption plate 21. There are multiple heat dissipation fins 22. The side wall of the inverter body 1 is fixedly connected to the mounting block 23. There are two mounting blocks 23. The adjacent mounting blocks 23 are fixedly connected to the fixing shaft 24. The outer surface of the fixing shaft 24 is fitted with a pull ring 25. The pull ring 25 makes it convenient for the operator to move the inverter body 1.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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 micro inverter suitable for distributed photovoltaic power generation, comprising an inverter body (1), characterized in that: The inverter body (1) has two connecting blocks (2) fixedly connected to its side wall. A limit block (3) is fixedly connected to the lower surface of each connecting block (2). A spring groove (4) is formed on the side wall of each limit block (3). A first spring (5) is fixedly connected to the inner wall of each spring groove (4). A limit pin (6) is fixedly connected to one end of each first spring (5). An inclined groove (7) is formed on the side wall of the limit pin (6). A first moving groove (8) is formed on the inner wall of the inclined groove (7). A second moving groove (9) is formed on the upper surface of the connecting block (2). The unit is provided with a movable frame (10), and a locking pin (11) is fixedly connected to the lower surface of the movable frame (10). There are two locking pins (11), and the locking pins (11) are located inside the inclined groove (7). An installation strip (12) is provided below the connecting block (2). There are two installation strips (12). A first limiting groove (13) is opened on the upper surface of the installation strip (12). A second limiting groove (14) is opened on the inner wall of the first limiting groove (13). There are two second limiting grooves (14). The limiting block (3) is located inside the first limiting groove (13), and the limiting pin (6) is located inside the second limiting groove (14).

2. The micro-inverter for distributed photovoltaic power as described in claim 1, characterized in that: A second spring (15) is fixedly connected to the inner bottom of the second moving groove (9), and one end of the second spring (15) is fixedly connected to the lower surface of the moving frame (10).

3. The micro-inverter suitable for distributed photovoltaic power as described in claim 2, characterized in that: The limiting block (3) has a threaded groove (16) inside, and a threaded post (17) is threadedly connected to the inner surface of the threaded groove (16). A torsion plate (18) is fixedly connected to the upper surface of the threaded post (17), and the second spring (15) is sleeved on the outer surface of the threaded post (17).

4. The micro-inverter suitable for distributed photovoltaic power as described in claim 3, characterized in that: The upper surface of the movable frame (10) is provided with a rotating groove (19), and the threaded column (17) is located inside the rotating groove (19).

5. The micro-inverter for distributed photovoltaic power as described in claim 1, characterized in that: The lower surface of the connecting block (2) is fixedly connected with a limiting post (27), and there are two limiting posts (27). The upper surface of the mounting strip (12) is provided with a third limiting groove (26), and there are two third limiting grooves (26). The limiting post (27) is located inside the third limiting groove (26).

6. The micro-inverter for distributed photovoltaic power as described in claim 1, characterized in that: The side wall of the connecting block (2) is provided with an auxiliary groove (20), and there are two auxiliary grooves (20).

7. The micro-inverter for distributed photovoltaic power as described in claim 1, characterized in that: A heat absorption plate (21) is fixedly connected to the lower surface of the inverter body (1), and heat dissipation fins (22) are fixedly connected to the lower surface of the heat absorption plate (21). There are multiple heat dissipation fins (22).

8. The micro-inverter for distributed photovoltaic power as described in claim 1, characterized in that: The inverter body (1) has two mounting blocks (23) fixedly connected to its side wall. A fixed shaft (24) is fixedly connected between adjacent mounting blocks (23), and a pull ring (25) is sleeved on the outer surface of the fixed shaft (24).

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