Connecting device of photovoltaic module and inverter

Abstract

The utility model discloses a connecting device for a photovoltaic module and an inverter, which relates to the technical field of photovoltaic engineering construction and comprises an inverter upper cross arm, inclined strut connecting bolts, inclined struts, an inverter lower cross arm and an inverter connecting piece. The other side of the inverter connecting bolt is connected with an inverter, the center of the inverter upper cross arm is connected with a U-shaped bolt, and the other side of the U-shaped bolt is connected with a C-shaped support stand column. According to the utility model, the inverter upper cross arm, the inverter lower cross arm and the inverter connecting piece are connected to the C-shaped bracket upright post through the U-shaped bolts, so that the upright post and the connecting device are integrated, and meanwhile, the influence of vibration caused by strong wind on the connecting device is effectively reduced; and the inverter upper cross arm, the inverter lower cross arm and the inverter connecting piece are connected with the inclined strut through a combined structure of double nuts, double gaskets, a single spring and a bolt, so that the overall stability of the structure is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic engineering construction, in particular to a connection device between a photovoltaic component and an inverter. Background Art

[0002] In the current global context of vigorously advocating low-carbon and environmental protection, photovoltaic power generation, as one of the important sources of renewable energy, has ushered in a peak of development around the world. Due to the issues of power generation efficiency and land shortage, large-scale photovoltaic power fields have gradually developed towards high-altitude plateaus and mountains. Under this climatic condition, photovoltaic modules and their ancillary facilities are extremely vulnerable to damage from adverse weather such as strong winds and blizzards, especially at the connection point between photovoltaic modules and inverters. This phenomenon not only poses a great threat to the operation of photovoltaic power stations, but also undermines the stable production of clean energy in my country. Therefore, it is urgent to design a photovoltaic module and inverter connection device that can effectively resist adverse weather conditions, ensure the stable connection between photovoltaic modules and inverters, and is easy to construct and simple to install. Utility Model Content

[0003] In order to improve the above-mentioned problem that the existing connection position is easily affected by dim weather and is easily damaged, the utility model provides a connection device between a photovoltaic module and an inverter.

[0004] The utility model provides a connection device between a photovoltaic module and an inverter, which adopts the following technical solution:

[0005] A connection device between a photovoltaic assembly and an inverter comprises an upper cross arm of an inverter, wherein both sides of the upper cross arm of the inverter are connected with diagonal brace connecting bolts, the other side of the diagonal brace connecting bolt is connected with a diagonal brace, the center of the diagonal brace is connected with an inverter lower cross arm, the bottom of the diagonal brace is connected with an inverter connecting piece, both sides of the center of the upper cross arm of the inverter are also connected with inverter connecting bolts, the other side of the inverter connecting bolt is connected to an inverter, the center of the upper cross arm of the inverter is connected with a U-shaped bolt, and the other side of the U-shaped bolt is connected with a C-shaped bracket column.

[0006] Through the above technical scheme, it is convenient to improve the stability of the inverter bracket and the photovoltaic column by using the inverter upper crossarm, inverter lower crossarm and inverter connector connected in sequence, and disperse the pressure through the design of the crossarm, reduce stress concentration, and increase the service life of the connection device, so that it is not affected by bad weather.

[0007] Optionally, in the above-mentioned connection device between a photovoltaic module and an inverter, the upper crossarm of the inverter is made of steel material, and magnesium-aluminum-zinc-plated SCS355-Q is selected. The upper crossarm of the inverter is 1587mm long, 40mm wide, 60mm high, and 2mm thick. The upper crossarm of the inverter is C-shaped as a whole, and the oblong hole through it has a size of 14×30mm.

[0008] Through the above technical solution, it is convenient to improve the material strength of the inverter upper cross arm through the steel material, ensure the subsequent fixing work, and prevent the weather factors from corroding the inverter upper cross arm.

[0009] Optionally, in the above-mentioned connection device between a photovoltaic component and an inverter, diagonal brace connecting bolts are symmetrically distributed on both sides of the upper cross arm of the inverter, and the diagonal brace connecting bolts penetrate the upper cross arm of the inverter and the diagonal brace to form a threaded structure, and the diagonal brace is a "V"-shaped structure.

[0010] Through the above technical solution, it is convenient to increase the force through the V-shaped diagonal brace to ensure stability during use.

[0011] Optionally, in the above-mentioned connection device between a photovoltaic component and an inverter, the material of the lower crossarm of the inverter is consistent with the material of the upper crossarm of the inverter, the lower crossarm of the inverter is 1137 mm long, 40 mm wide, 60 mm high and 2 mm thick, and the lower crossarm of the inverter is also connected by diagonal braces with bolts to form a threaded fixing structure with the diagonal braces.

[0012] Through the above technical solution, it is convenient to cooperate with the upper cross arm of the inverter and the lower cross arm of the inverter to increase the overall stability of the connecting device.

[0013] Optionally, in the above-mentioned connection device between a photovoltaic component and an inverter, the material of the inverter connector is consistent with the material of the lower cross arm of the inverter, the inverter connector is 345 mm long, 40 mm wide, 60 mm high, and 2 mm thick, the bottom of the inverter connector and the bottom of the diagonal brace are above the same horizontal line, and the inverter connector also forms a threaded fixing structure with the diagonal brace through the diagonal brace connecting bolts.

[0014] Through the above technical solution, it is convenient to perform secondary limiting and fixing of the diagonal brace through the inverter connector, thereby enhancing the stability of the diagonal brace and further improving the structural stability.

[0015] Optionally, in the above-mentioned connection device between a photovoltaic component and an inverter, the U-shaped bolt is hot-dip galvanized, and the average thickness of the zinc layer is ≥55μm, and the local thickness is ≥45μm. The U-shaped bolt is 134mm long, 64mm wide at the center, 12mm in diameter, and the threaded part is 50mm long. The U-shaped bolt is U-shaped as a whole.

[0016] Through the above technical solution, it is convenient to integrate the connecting bolts through the U-bolts to ensure the strength of the connecting structure.

[0017] Optionally, in the above-mentioned connection device between a photovoltaic module and an inverter, U-shaped bolts are evenly and equidistantly distributed on both sides of the C-shaped bracket column, and the connection method between the U-shaped bolts and the cross arm on the inverter is a threaded connection, and the cross arm on the inverter forms a threaded fixing structure with the inverter through the inverter connecting bolts.

[0018] Through the above technical solution, it is convenient to use U-shaped bolts to connect the C-shaped bracket column with the upper cross arm of the inverter, the lower cross arm of the inverter and the inverter connecting piece, thereby ensuring a stable connection with the C-shaped bracket column.

[0019] In summary, the present invention has at least one of the following beneficial effects:

[0020] The upper cross arm of the inverter, the lower cross arm of the inverter and the inverter connector are connected to the C-shaped bracket column through U-shaped bolts to form an integration of the column and the connecting device, while effectively reducing the impact of vibration caused by strong winds on the connecting device. The upper cross arm of the inverter, the lower cross arm of the inverter and the inverter connector are connected to the diagonal brace through a combination structure of double nuts, double washers, single springs and bolts, further improving the overall stability of the structure;

[0021] The double cross-arm design connects the inverter, which helps to disperse the force, reduce stress concentration, and greatly extend the service life of the connection device. The whole structure uses magnesium-aluminum-zinc alloy steel, which has the advantages of high strength, good frost resistance and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall side view structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the overall front view structure of the utility model;

[0024] Figure 3 It is a schematic diagram of the structure of a U-shaped bolt of the utility model.

[0025] In the figure: 1. Inverter upper cross arm; 2. Inverter lower cross arm; 3. Inverter connector; 4. Diagonal brace; 5. U-shaped bolt; 6. Inverter connecting bolt; 7. C-shaped bracket column; 8. Inverter; 9. Diagonal brace connecting bolt. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-3 The utility model is described in further detail.

[0027] Please refer to the attached figure in the instruction manual Figure 1-3The utility model provides an embodiment: a connection device between a photovoltaic module and an inverter, comprising an upper cross arm 1 of an inverter, with diagonal brace connection bolts 9 connected to both sides of the upper cross arm 1 of the inverter, and a diagonal brace 4 connected to the other side of the diagonal brace connection bolts 9, and the diagonal brace 4 is connected and fixed to the upper cross arm 1 of the inverter, the lower cross arm 2 of the inverter, and the inverter connecting piece 3 through a combined structure of double nuts, double washers, a single spring and hexagonal bolts to increase the overall stability of the connection device, the center of the diagonal brace 4 is connected to the lower cross arm 2 of the inverter, the bottom of the diagonal brace 4 is connected to the inverter connecting piece 3, and the center of the upper cross arm 1 of the inverter is also connected to the inverter connecting bolts 6, and the inverter The other side of the inverter connecting bolt 6 is connected to the inverter 8, and the inverter 8 is connected and fixed to the upper crossarm 1 of the inverter and the lower crossarm 2 of the inverter through the combined structure of a single nut, a single gasket and a hexagonal bolt. The design of the double crossarm disperses the force and reduces the stress concentration phenomenon, which can greatly extend the service life of the connecting device. The center of the upper crossarm 1 of the inverter is connected with a U-bolt 5, and the other side of the U-bolt 5 is connected to a C-type bracket column 7. The upper crossarm 1 of the inverter, the lower crossarm 2 of the inverter and the inverter connector 3 are sequentially connected to the C-type bracket column 7 through the U-bolt 5 in order from top to bottom, so as to achieve a close connection between the inverter bracket and the photovoltaic column.

[0028] See the attached drawings in the specification Figure 1-3 The cross arm 1 on the inverter is made of steel material, and magnesium-aluminum-zinc-plated SCS355-Q is selected, and the minimum content of magnesium-aluminum-zinc alloy steel composite coating is ≥275g / m 2 The inverter upper cross arm 1 is 1587mm long, 40mm wide, 60mm high and 2mm thick. The inverter upper cross arm 1 is C-shaped as a whole, and the oblong hole size is 14×30mm. The inverter upper cross arm 1 is made of steel material to improve the material strength, ensure the subsequent fixing work, and prevent the inverter upper cross arm 1 from being corroded by weather factors.

[0029] See the attached drawings in the specification Figure 1-3 The diagonal brace connecting bolts 9 are symmetrically distributed on both sides of the upper cross arm 1 of the inverter. The diagonal brace connecting bolts 9 penetrate the upper cross arm 1 of the inverter and form a threaded structure with the diagonal brace 4. The diagonal brace 4 is a "V"-shaped structure. The V-shaped diagonal brace 4 increases the force and ensures stability during use.

[0030] See the attached drawings in the specification Figure 1-3 The material of the inverter lower cross arm 2 is consistent with that of the inverter upper cross arm 1. The inverter lower cross arm 2 is 1137 mm long, 40 mm wide, 60 mm high and 2 mm thick. The inverter lower cross arm 2 is also connected with the diagonal brace 4 by bolts 9 to form a threaded fixing structure, and the inverter upper cross arm 1 cooperates with the inverter lower cross arm 2 to increase the overall stability of the connection device.

[0031] See the attached drawings in the specification Figure 1-3The material of the inverter connector 3 is consistent with that of the inverter lower cross arm 2. The inverter connector 3 is 345 mm long, 40 mm wide, 60 mm high and 2 mm thick. The bottom of the inverter connector 3 and the bottom of the diagonal brace 4 are above the same horizontal line. The inverter connector 3 also forms a threaded fixing structure with the diagonal brace 4 through the diagonal brace connecting bolt 9. The inverter connector 3 performs secondary limit fixing on the diagonal brace 4 to enhance the stability of the diagonal brace 4 and further improve the structural stability.

[0032] See the attached drawings in the specification Figure 1-3 The U-bolt 5 is hot-dip galvanized, and the average thickness of the zinc layer is ≥55μm, and the local thickness is ≥45μm. The U-bolt 5 is 134mm long, 64mm wide at the center, 12mm in diameter, and the threaded portion is 50mm long. The U-bolt 5 is U-shaped as a whole. The U-bolt 5 integrates the connecting bolts to ensure the strength of the connecting structure.

[0033] See the attached drawings in the specification Figure 1-3 U-shaped bolts 5 are evenly and equidistantly distributed on both sides of the C-shaped bracket column 7. The connection method between the U-shaped bolts 5 and the upper cross arm 1 of the inverter is a threaded connection. The upper cross arm 1 of the inverter forms a threaded fixing structure with the inverter 8 through the inverter connecting bolts 6. The U-shaped bolts 5 are used to connect the C-shaped bracket column 7 with the upper cross arm 1 of the inverter, the lower cross arm 2 of the inverter and the inverter connecting piece 3 to ensure that it is stably connected to the C-shaped bracket column 7.

[0034] Working principle: When in use, the upper cross arm 1 of the inverter, the lower cross arm 2 of the inverter and the inverter connector 3 are connected to the C-shaped bracket column 7 in sequence from top to bottom through U-shaped bolts 5. The distance between the upper cross arm 1 of the inverter and the lower cross arm 2 of the inverter is 226mm, and the distance between the lower cross arm 2 of the inverter and the inverter connector 3 is 400mm. The diagonal brace 4 is fixed to the upper cross arm 1 of the inverter, the lower cross arm 2 of the inverter and the inverter connector 3 through hexagonal bolts to increase the overall Stability, the inverter 8 is fixed to the upper cross arm 1 of the inverter and the lower cross arm 2 of the inverter by hexagonal bolts. The lowest point of the inverter 8 is ≥1200mm above the ground, and the highest point of the box is ≥200mm away from the photovoltaic panel. It should be noted that each hexagonal bolt is equipped with a single gasket and a single nut to increase the stability and seismic resistance of the connection structure, and each U-bolt 5 is equipped with double springs, double gaskets and double nuts to increase the stability and seismic resistance of the connection structure.

[0035] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A device for connecting a photovoltaic module to an inverter, comprising an upper cross arm (1) of the inverter, characterized in that: The inverter upper cross arm (1) is connected to diagonal brace connecting bolts (9) on both sides, the diagonal brace connecting bolts (9) are connected to diagonal braces (4) on the other side, the center of the diagonal brace (4) is connected to the inverter lower cross arm (2), the bottom of the diagonal brace (4) is connected to the inverter connecting piece (3), the center of the inverter upper cross arm (1) is also connected to inverter connecting bolts (6), the other side of the inverter connecting bolts (6) is connected to the inverter (8), the center of the inverter upper cross arm (1) is connected to a U-shaped bolt (5), and the other side of the U-shaped bolt (5) is connected to a C-shaped bracket column (7).

2. The device for connecting a photovoltaic module to an inverter according to claim 1, characterized in that: The inverter upper cross arm (1) is made of steel material, and magnesium-aluminum-zinc-plated SCS355-Q is selected. The inverter upper cross arm (1) is 1587 mm long, 40 mm wide, 60 mm high, and 2 mm thick. The inverter upper cross arm (1) is C-shaped as a whole, and the oblong hole through it has a size of 14×30 mm.

3. The photovoltaic module and inverter connection device according to claim 1, characterized in that: The diagonal brace connecting bolts (9) are symmetrically distributed on both sides of the inverter upper cross arm (1); the diagonal brace connecting bolts (9) penetrate the inverter upper cross arm (1) and the diagonal brace (4) to form a threaded structure; the diagonal brace (4) is in a "V"-shaped structure.

4. The device for connecting a photovoltaic module to an inverter according to claim 1, characterized in that: The material of the inverter lower cross arm (2) is consistent with that of the inverter upper cross arm (1). The inverter lower cross arm (2) is 1137 mm long, 40 mm wide, 60 mm high and 2 mm thick. The inverter lower cross arm (2) is also connected to the diagonal brace (4) through a screw thread fixing structure with a bolt (9).

5. The photovoltaic module and inverter connection device according to claim 1, characterized in that: The material of the inverter connector (3) is consistent with the material of the inverter lower cross arm (2). The inverter connector (3) is 345 mm long, 40 mm wide, 60 mm high and 2 mm thick. The bottom of the inverter connector (3) and the bottom of the diagonal brace (4) are above the same horizontal line. The inverter connector (3) is also connected to the diagonal brace (4) through a screw thread fixing structure.

6. The photovoltaic module and inverter connection device according to claim 1, characterized in that: The U-shaped bolt (5) is hot-dip galvanized, and the average thickness of the zinc layer is ≥55μm, and the local thickness is ≥45μm. The U-shaped bolt (5) is 134mm long, 64mm wide at the center, 12mm in diameter, and the threaded portion is 50mm long. The U-shaped bolt (5) is U-shaped as a whole.

7. The device for connecting a photovoltaic module to an inverter according to claim 1, characterized in that: U-shaped bolts (5) are evenly and equidistantly distributed on both sides of the C-shaped bracket column (7); the U-shaped bolts (5) are connected to the inverter upper cross arm (1) by threaded connection; the inverter upper cross arm (1) forms a threaded fixing structure with the inverter (8) via the inverter connection bolts (6).

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