High-efficiency low-cost photovoltaic inverter

Abstract

The utility model discloses a high-efficiency low-cost photovoltaic inverter, and relates to the technical field of photovoltaic equipment. The photovoltaic inverter comprises a rear shell and a photovoltaic inverter shell, the rear shell and the photovoltaic inverter shell are both connected with an auxiliary maintenance assembly, the rear shell is connected with a sunshade assembly, when the rear shell and the photovoltaic inverter shell need to be connected into a whole, a pull block can be moved upwards to drive one of the connecting plates to be upward, and the photovoltaic inverter shell is connected with the sunshade assembly. The other connecting plate can be driven to move upwards through the connecting rod, and when the connecting plate moves upwards, the limiting block is driven to move upwards, so that the limiting block is separated from the rectangular connecting groove, and then the rectangular connecting block on one side of the photovoltaic inverter shell slides into the rectangular connecting groove. When the rectangular connecting block is completely attached to the inner surface of the rectangular connecting groove, the pull block is loosened, the limiting block can be inserted into the limiting hole by means of the force of the spring, and the rear shell and the photovoltaic inverter shell can be conveniently and rapidly disassembled so as to facilitate overhaul and maintenance.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic equipment, in particular to a high-efficiency and low-cost photovoltaic inverter. Background Technique

[0002] A photovoltaic inverter can convert the variable DC voltage generated by a photovoltaic (PV) solar panel into AC power with the frequency of the commercial power grid, which can be fed back to the commercial power transmission system or used for an off-grid power grid. A photovoltaic inverter is one of the important balance of system (BOS) in a photovoltaic array system and can be used in conjunction with equipment powered by general AC power. The solar inverter has special functions to cooperate with the photovoltaic array, such as the functions of maximum power point tracking and islanding effect protection.

[0003] There are still some problems in the use of existing photovoltaic inverters: existing photovoltaic inverters are usually assembled and fixed by threaded rods, and disassembly tools are required for disassembly. The disassembly process is relatively slow, resulting in low disassembly efficiency and being not conducive to later maintenance. Also, generally, to avoid the inverter being flooded by rain on rainy days when placed too low, the photovoltaic inverter is generally installed on the roof. The inverter is exposed to the scorching sun, and the internal temperature of the equipment will increase significantly, seriously affecting the lifespan of the key components inside the inverter. In view of the above problems, the inventor proposes a high-efficiency and low-cost photovoltaic inverter to solve the above problems. Content of the Utility Model

[0004] In order to solve the problems existing in the use of existing photovoltaic inverters: existing photovoltaic inverters are usually assembled and fixed by threaded rods, and disassembly tools are required for disassembly. The disassembly process is relatively slow, resulting in low disassembly efficiency and being not conducive to later maintenance. Also, generally, to avoid the inverter being flooded by rain on rainy days when placed too low, the photovoltaic inverter is generally installed on the roof. The inverter is exposed to the scorching sun, and the internal temperature of the equipment will increase significantly, seriously affecting the lifespan of the key components inside the inverter; the purpose of the present utility model is to provide a high-efficiency and low-cost photovoltaic inverter.

[0005] To solve the above technical problems, the present utility model adopts the following technical solution: a high-efficiency and low-cost photovoltaic inverter, including a rear shell and a photovoltaic inverter housing, auxiliary maintenance components are connected to both the rear shell and the photovoltaic inverter housing, and a sunshade component is connected to the rear shell;

[0006] The auxiliary maintenance component includes a rectangular connecting groove which is opened on the side surface of the rear shell. There are two rectangular connecting grooves, and they are symmetrically arranged on one side of the rear shell. The cross-sectional shapes of the rectangular connecting groove and the rectangular connecting block are both "T" shaped. A rectangular connecting block is fixedly arranged on the side surface of the photovoltaic inverter housing. A limiting hole is opened on the upper surface of the rectangular connecting block. The inner surface of the rectangular connecting block is slidably fitted with the inner surface of the rectangular connecting groove. A square groove is opened in the rear shell, and the square groove is communicated with the rectangular connecting groove. A spring is fixedly arranged on the inner surface of the square groove. There are two springs, and they are symmetrically arranged between the square groove and the limiting block. The other end of the spring is fixedly provided with a limiting block, and the limiting block is movably inserted into the limiting hole. A rectangular through groove is opened in the rear shell, and the rectangular through groove is communicated with the square groove. A connecting plate is fixedly arranged on one side of the limiting block, and the inner surface of the rectangular through groove is slidably fitted with the connecting plate. A limiting groove is opened on the inner surface of the square groove, and a limiting slider is slidably arranged in the limiting groove. The limiting slider is fixedly connected with the limiting block. A connecting rod is fixedly arranged between the connecting plates. A through groove is opened on one side of the rear shell. The cross-sectional shape of the rectangular through groove is "concave" shaped. A pulling block is slidably arranged in the through groove, and the pulling block is fixedly connected with one of the connecting plates.

[0007] Preferably, the sunshade component includes a square hole and a sunshade plate. The square hole is opened on the upper surface of the rear shell. There are two square holes, and they are symmetrically arranged on the upper surface of the rear shell. A square rod is fixedly arranged on the lower surface of the sunshade plate. A through hole is opened on the side surface of the square rod. The square rod is movably inserted into the square hole. A second bolt is threadedly inserted into the side surface of the rear shell, and the end of the second bolt is movably inserted into the through hole.

[0008] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0009] 1. When it is necessary to connect the rear shell and the photovoltaic inverter housing together, the pulling block can be moved upward, thereby driving one of the connecting plates upward. Through the connecting rod, the other connecting plate can be driven to move upward. When the connecting plate moves upward, it drives the limiting block to move upward, so that the limiting block disengages from the rectangular connecting groove. Then, the rectangular connecting block on one side of the photovoltaic inverter housing can be slid into the rectangular connecting groove. When the rectangular connecting block is completely and tightly fitted with the inner surface of the rectangular connecting groove, release the pulling block, and by virtue of the force of the spring, the limiting block can be inserted into the limiting hole, which is convenient for quickly disassembling the rear shell and the photovoltaic inverter housing for maintenance.

[0010] 2. When it is necessary to use the sunshade plate, the square rod can be inserted into the square hole, and then the sunshade plate can be connected to the rear shell through the second bolt, avoiding the inverter from being exposed to the sun, and it can be installed when needed. Description of the Drawings

[0011] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0012] Figure 1 It is a schematic structural diagram of the present invention.

[0013] Figure 2 It is a schematic structural diagram of the rectangular connection groove of the present invention.

[0014] Figure 3 It is a schematic cross-sectional structure diagram of the rear shell of the present invention.

[0015] Figure 4 For the present invention Figure 3 The enlarged structural diagram at position A in it.

[0016] Figure 5 It is a schematic structural diagram of the rectangular through groove of the present invention.

[0017] Figure 6 For the present invention Figure 5 The enlarged structural diagram at position B in it.

[0018] Figure 7 It is a schematic structural diagram of the sunshade assembly of the present invention.

[0019] In the figure: 1. Rear shell; 11. First bolt; 2. Photovoltaic inverter housing; 3. Auxiliary maintenance component; 31. Rectangular connection groove; 32. Rectangular connection block; 321. Limit hole; 33. Square groove; 34. Spring; 35. Limit block; 36. Limit groove; 361. Limit slider; 37. Rectangular through groove; 38. Connecting plate; 381. Through slot; 382. Pulling block; 39. Connecting rod; 4. Sunshade assembly; 41. Square hole; 42. Square rod; 421. Through hole; 43. Sunshade board; 44. Second bolt. Specific embodiments

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0021] Embodiment 1: As Figure 1-7As shown in the figure, the utility model provides a high-efficiency and low-cost photovoltaic inverter, which includes a rear shell 1 and a photovoltaic inverter housing 2. Auxiliary maintenance components 3 are connected to both the rear shell 1 and the photovoltaic inverter housing 2. A first screw 11 is threadedly inserted into the rear shell 1, and the photovoltaic inverter housing 2 can be installed at a designated position through the first bolt 11. A sunshade component 4 is connected to the rear shell 1;

[0022] The auxiliary maintenance component 3 includes a rectangular connection groove 31, which is opened on the side of the rear shell 1. There are two rectangular connection grooves 31, and the rectangular connection grooves 31 are symmetrically arranged on one side of the rear shell 1 to improve the connection stability. A rectangular connection block 32 is fixedly arranged on the side of the photovoltaic inverter housing 2. A limit hole 321 is opened on the upper surface of the rectangular connection block 32. The rectangular connection block 32 is slidably fitted with the inner surface of the rectangular connection groove 31. A square groove 33 is opened in the rear shell 1, and the square groove 33 is communicated with the rectangular connection groove 31. A spring 34 is fixedly arranged on the inner surface of the square groove 33. The other end of the spring 34 is fixedly provided with a limit block 35. There are two springs 34, and the springs 34 are symmetrically arranged between the square groove 33 and the limit block 35. The limit block 35 is movably inserted into the limit hole 321. A rectangular through groove 37 is opened in the rear shell 1, and the rectangular through groove 37 is communicated with the square groove 33. A connecting plate 38 is fixedly arranged on one side of the limit block 35. The connecting plate 38 is slidably fitted with the inner surface of the rectangular through groove 37. A connecting rod 39 is fixedly arranged between the connecting plates 38. A through groove 381 is opened on one side of the rear shell 1. A pull block 382 is slidably arranged in the through groove 381. The pull block 382 is fixedly connected to one of the connecting plates 38. When it is necessary to connect the rear shell 1 and the photovoltaic inverter housing 2 together, the pull block 382 can be moved upward, thereby driving one of the connecting plates 38 upward. Through the connecting rod 39, the other connecting plate 38 can be driven to move upward. When the connecting plate 38 moves upward, it drives the limit block 35 to move upward, so that the limit block 35 disengages from the rectangular connection groove 31. Then, the rectangular connection block 32 on one side of the photovoltaic inverter housing 2 can be slid into the rectangular connection groove 31. When the rectangular connection block 32 is completely and tightly fitted with the inner surface of the rectangular connection groove 31, release the pull block 382, and the limit block 35 can be inserted into the limit hole 321 by the force of the spring 34, which is convenient for quickly disassembling the rear shell 1 and the photovoltaic inverter housing 2 for maintenance.

[0023] A limit groove 36 is opened on the inner surface of the square groove 33. A limit slider 361 is slidably arranged in the limit groove 36. The limit slider 361 is fixedly connected to the limit block 35.

[0024] By adopting the above technical solution, the limit block 35 is limited.

[0025] The cross-sectional shapes of the rectangular connection groove 31 and the rectangular connection block 32 are both "T" shaped.

[0026] By adopting the above technical solution, the stability of the connection is improved.

[0027] The cross-sectional shape of the rectangular through groove 37 is "concave".

[0028] By adopting the above technical solution, the connection is facilitated.

[0029] Embodiment 2: As Figure 1 shown, the sunshade assembly 4 includes a square hole 41 and a sunshade plate 43. The square hole 41 is opened on the upper surface of the rear shell 1. There are two square holes 41, and the square holes 41 are symmetrically arranged on the upper surface of the rear shell 1 to improve stability. A square rod 42 is fixedly provided on the lower surface of the sunshade plate 43. A through hole 421 is opened on the side surface of the square rod 42. The square rod 42 is movably inserted into the square hole 41. A second bolt 44 is threadedly inserted into the side surface of the rear shell 1. The end of the second bolt 44 is movably inserted into the through hole 421. When the sunshade plate 43 needs to be used, the square rod 42 can be inserted into the square hole 41, and then the sunshade plate 43 can be connected to the rear shell 1 through the second bolt 44, avoiding the inverter from being exposed to the sun, and it can be installed when needed.

[0030] Working principle: When the present utility model is in use, the photovoltaic inverter housing 2 can be installed at a designated position through the first bolt 11. When the rear shell 1 and the photovoltaic inverter housing 2 need to be connected together, the pull block 382 can be moved upward, so as to drive one of the connecting plates 38 upward. The other connecting plate 38 can be driven to move upward through the connecting rod 39. When the connecting plate 38 moves upward, the limiting block 35 is driven to move upward, so that the limiting block 35 disengages from the rectangular connecting groove 31. Then, the rectangular connecting block 32 on one side of the photovoltaic inverter housing 2 can be slid into the rectangular connecting groove 31. When the rectangular connecting block 32 is completely fitted with the inner surface of the rectangular connecting groove 31, the pull block 382 is released, and the limiting block 35 can be inserted into the limiting hole 321 by means of the force of the spring 34, which is convenient for quickly disassembling the rear shell 1 and the photovoltaic inverter housing 2 for maintenance. When the sunshade plate 43 needs to be used, the square rod 42 can be inserted into the square hole 41, and then the sunshade plate 43 can be connected to the rear shell 1 through the second bolt 44, avoiding the inverter from being exposed to the sun, and it can be installed when needed.

[0031] Obviously, those skilled in the art can make various changes and modifications to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and their equivalent technologies, the present utility model is also intended to include these modifications and variations.

Claims

1. A high-efficiency and low-cost photovoltaic inverter, comprising a rear housing (1) and a photovoltaic inverter housing (2), characterized in that: The rear shell (1) and the photovoltaic inverter housing (2) are both connected with an auxiliary maintenance component (3), and the rear shell (1) is connected with a sunshade component (4); The auxiliary maintenance component (3) comprises a rectangular connection groove (31), the rectangular connection groove (31) is provided on the side of the rear shell (1), a rectangular connection block (32) is fixedly provided on the side of the photovoltaic inverter housing (2), a limiting hole (321) is provided on the upper surface of the rectangular connection block (32), the rectangular connection block (32) is slidably fitted with the inner surface of the rectangular connection groove (31), a square groove (33) is provided in the rear shell (1), the square groove (33) is connected with the rectangular connection groove (31), a spring (34) is fixedly provided on the inner surface of the square groove (33), and a limiting hole (321) is fixedly provided on the other end of the spring (34). A positioning block (35) is provided, wherein the positioning block (35) is movably inserted into the positioning hole (321); a rectangular through slot (37) is provided in the rear shell (1); the rectangular through slot (37) is communicated with the square slot (33); a connecting plate (38) is fixedly provided on one side of the positioning block (35); the connecting plate (38) is slidably fitted with the inner surface of the rectangular through slot (37); a connecting rod (39) is fixedly provided between the connecting plates (38); a through slot (381) is provided on one side of the rear shell (1); a pull block (382) is slidably provided in the through slot (381); the pull block (382) is fixedly connected to one of the connecting plates (38).

2. A high-efficiency and low-cost photovoltaic inverter as claimed in claim 1, characterized in that: The sunshade assembly (4) comprises a square hole (41) and a sunshade plate (43); the square hole (41) is provided on the upper surface of the rear shell (1); a square rod (42) is fixedly provided on the lower surface of the sunshade plate (43); a through hole (421) is provided on the side of the square rod (42); the square rod (42) is movably inserted into the square hole (41); a second bolt (44) is threadedly inserted into the side of the rear shell (1); and the end of the second bolt (44) is movably inserted into the through hole (421).

3. A high-efficiency and low-cost photovoltaic inverter as claimed in claim 1, characterized in that: A limiting groove (36) is provided on the inner surface of the square groove (33), a limiting slider (361) is slidably arranged in the limiting groove (36), and the limiting slider (361) is fixedly connected to the limiting block (35).

4. A high-efficiency and low-cost photovoltaic inverter as claimed in claim 1, characterized in that: The cross-sectional shapes of the rectangular connecting groove (31) and the rectangular connecting block (32) are both "T"-shaped.

5. A high-efficiency and low-cost photovoltaic inverter as claimed in claim 1, characterized in that: The cross-sectional shape of the rectangular through groove (37) is a "concave" shape.

6. A high-efficiency and low-cost photovoltaic inverter as claimed in claim 1, characterized in that: Two rectangular connection grooves (31) are provided, and the rectangular connection grooves (31) are symmetrically arranged on one side of the rear shell (1).

7. A high-efficiency and low-cost photovoltaic inverter as claimed in claim 1, characterized in that: Two springs (34) are provided, and the springs (34) are symmetrically arranged between the square groove (33) and the limiting block (35).

8. A high-efficiency and low-cost photovoltaic inverter as claimed in claim 2, characterized in that: There are two square holes (41), and the square holes (41) are symmetrically arranged on the upper surface of the rear shell (1).

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