Photovoltaic array bracket angle adjustment system and method

Abstract

A photovoltaic array support angle adjustment system and method, comprising: an electric push rod seat plate mounted on a support column, a swing arm mounted on a photovoltaic main shaft, and an electric push rod, the swing arm comprising a main shaft connection portion that can be fixed on the photovoltaic main shaft and a push rod connection portion that can be connected to the electric push rod, the photovoltaic main shaft is used to carry photovoltaic components, the electric push rod is detachably mounted on the electric push rod seat plate, and the telescopic inner rod head of the electric push rod can be sleeved on the push rod connection portion of the swing arm. According to the system and method of the present invention, an electric push rod seat plate and a swing arm that drives the photovoltaic main shaft to rotate are provided on the middle support column of a matrix photovoltaic array, so that when adjusting the angle of the photovoltaic component, only one electric push rod can be used to complete the angle adjustment task of the photovoltaic array support, thereby reducing the installation and adjustment costs.

Description

Technical Field

[0001] The invention relates to solar photovoltaic equipment, and in particular to a photovoltaic array bracket angle adjustment system and method. Background Art

[0002] Solar photovoltaic panels, especially large-area solar photovoltaic panel arrays or photovoltaic systems, when installed on the ground or on the water, need to track the movement of the sun in real time and adjust the direction of the photovoltaic components (for example, from east to west) so that the sunlight directly hits the light-receiving plane of the photovoltaic panels to increase photovoltaic power generation. In the north-south direction, although it is not necessary to track the sun in real time like the east-west direction, the angle must be adjusted according to the local latitude during installation, and it also needs to be appropriately adjusted according to the seasons during operation. Existing photovoltaic systems, such as Figure 1 The Chinese invention patent application No. 201110393486.6 disclosed a solar azimuth tracking device, wherein the device for adjusting the north-south azimuth of the photovoltaic module includes a vertical drive motor 3, a vertical drive turbine 5, a vertical drive worm 4 and a vertical rotation shaft 10. Not only is the structure complicated, but the vertical drive motor 3 is fixed on the bracket 11. For the photovoltaic array that rarely has adjustment operations in the north-south direction throughout the year, its production and use costs are huge. Therefore, there is a need for a more inexpensive and flexible system and method suitable for installing and adjusting the north-south angle of the photovoltaic module. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned defects of the prior art and provide a photovoltaic array bracket angle adjustment system and method.

[0004] According to one aspect of the present invention, there is provided a photovoltaic array bracket angle adjustment system, comprising: an electric push rod seat plate installed on a bracket column, a swing arm installed on a photovoltaic main shaft, and an electric push rod, the swing arm comprising a main shaft connecting portion that can be fixed on the photovoltaic main shaft and a push rod connecting portion that can be connected to the electric push rod, the photovoltaic main shaft is used to carry a photovoltaic component, the electric push rod is detachably mounted on the electric push rod seat plate, and the telescopic inner rod head of the electric push rod can be sleeved on the push rod connecting portion of the swing arm.

[0005] The system also includes an arch fixed to the back side of the photovoltaic module.

[0006] In the system, the arch is connected to the support column through arch bolts.

[0007] In the system, a main shaft bearing is arranged at the top end of the support column, and the photovoltaic main shaft is inserted into the main shaft bearing.

[0008] In the system, the push rod seat plate includes a column mounting portion for fixing on the support column and a push rod mounting portion for connecting the electric push rod.

[0009] In the system, the support columns include middle columns and non-middle columns, and the support angle adjustment system is installed on the middle columns.

[0010] According to another aspect of the present invention, a method for adjusting the angle of a photovoltaic array support is provided, comprising the following steps:

[0011] The portable electric push rod is installed on the middle column and the swing arm of the support column, and the swing arm can be fixed on the photovoltaic main shaft;

[0012] Loosen the arch bolts installed on the support column for positioning the arch, and fix the end of the arch to the back of the photovoltaic module;

[0013] The swing arm is driven to swing by the electric push rod to adjust the orientation of the photovoltaic assembly;

[0014] Tighten the previously loosened arch bolts to determine the orientation of the photovoltaic module;

[0015] Remove the electric push rod from the middle column.

[0016] The method, wherein the step of tightening the previously loosened arch bolt further comprises the following steps:

[0017] Tighten the arch bolts on the support columns except the middle column;

[0018] After the electric push rod is removed from the middle column, the arch bolts on the middle column are tightened.

[0019] The method, wherein the step of removing the electric push rod from the middle column further comprises the following steps:

[0020] Loosen the electric push rod from the push rod seat plate, the push rod seat plate is used to install the electric push rod on the middle column of the support column;

[0021] Remove the electric push rod from the middle column.

[0022] In the method, the step of loosening the electric push rod from the push rod seat plate further includes: loosening the electric push rod from the push rod seat plate by controlling a switch to move the electric push rod in a jog manner through a controller on the electric push rod.

[0023] According to the photovoltaic array support angle adjustment system of the present invention, an electric push rod seat plate and a swing arm for driving the photovoltaic main shaft to rotate are arranged on the middle support column of the photovoltaic array in a matrix, so that when adjusting the angle of the photovoltaic module, only one electric push rod can be used to complete the angle adjustment task of the photovoltaic array support, thereby reducing the installation and adjustment costs. According to the photovoltaic array support angle adjustment method of the present invention, the angle adjustment tends to be semi-automatic, which reduces the difficulty and burden of the operator's work and is suitable for the angle adjustment of the photovoltaic array support at various latitudes and various seasons. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A prior art sun tracking device is shown.

[0025] Figure 2 2 is a schematic diagram showing the installation of a photovoltaic array support angle adjustment system according to the present invention.

[0026] Figure 3A Yes means Figure 2 The schematic diagram of the installation structure on each bracket column is shown. Figure 3B It is a partial enlarged schematic diagram of the structure shown in FIG. 3A .

[0027] Figures 4A to 4C They are respectively Figure 3A Schematic diagram of a photovoltaic array bracket angle adjustment system set on the mounting structure shown.

[0028] Figure 5 Yes means Figure 4A An enlarged schematic diagram of the swing arm mounted on the photovoltaic main shaft is shown.

[0029] Fig. 6A and 6B They are respectively Figure 4A The schematic diagram of the installation of the electric push rod of the photovoltaic array support angle adjustment system is shown.

[0030] Figure 7 It is a structural schematic diagram showing that a photovoltaic array support angle adjustment system is installed on a support column. DETAILED DESCRIPTION

[0031] The photovoltaic array bracket angle adjustment system and method of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments. Those skilled in the art will understand that the embodiments shown in the accompanying drawings are merely schematic and are used to help understand the basic concept of the present invention.

[0032] Figure 2 Schematic diagram of the installation of the photovoltaic array support angle adjustment system according to the present invention. Figure 2 , Figure 2A row (column) of brackets in a photovoltaic array is shown, including a column 21, a photovoltaic main shaft 23 movably mounted on the column 21, and a photovoltaic module 25 mounted on the photovoltaic main shaft 23. Figure 2 The row (column) of brackets shown includes 5 columns 21. It will be appreciated by those skilled in the art that the row (column) of brackets may also have more or fewer columns. The photovoltaic array bracket angle adjustment system according to the present invention is, for example, installed on a middle column 21' located in the middle position. It will be appreciated by those skilled in the art that the angle adjustment system may also be installed on a column 21 located in a non-middle position, and the specific method may be determined according to the site conditions.

[0033] Figure 3A Yes means Figure 2 The schematic diagram of the installation structure on each column 21 is shown, Figure 3B yes Figure 3A A partial enlarged schematic diagram of the structure shown. Figure 3A and 3B , a bearing 211 is provided at the upper end of the column 21, and the photovoltaic main shaft 23 is inserted into the bearing 211. The photovoltaic module 25 is fixed to the photovoltaic main shaft 23 through the module lower seat 251, and is connected to the column body of the column 21 through the arch 27 and the arch bolt 271. That is, the two ends 270 of the arch 27 are fixed to the back of the photovoltaic module 25 by connecting parts such as bolts, and the arc of the arch 27 is inserted into the arch bolt 271. By rotating the photovoltaic main shaft 23, the orientation of the photovoltaic module 25, for example, in the north-south direction, can be adjusted, and the orientation of the photovoltaic module 25 can be fixed by the arch 27 and the arch bolt 271. That is, when the photovoltaic main shaft 23 needs to be rotated to adjust the orientation of the photovoltaic assembly 25, the nut 272 of the arch bolt 271 connected to the column 21 can be loosened so that the arch 27 can rotate accordingly; and when the orientation of the photovoltaic assembly 25 needs to be fixed, the nut 272 of the arch bolt 271 connected to the column 21 can be tightened so that the arch no longer rotates. In this way, the photovoltaic assembly 25 can be positioned, for example, in the north-south direction.

[0034] Figures 4A to 4C They are respectively Figure 3A Schematic diagram of the photovoltaic array bracket angle adjustment system installed on the mounting structure shown. Figures 4A to 4CFor example, an electric push rod seat plate 41 is installed above the arch bolt 271 and the nut 272 on the middle column 21'. The column mounting portion 411 of the seat plate 41 is fixed to the column 21' by bolts, for example, and the push rod mounting portion 412 of the seat plate 41 is, for example, a through hole, which can be penetrated by a pin shaft for connecting the electric push rod. In addition, a swing arm 43 is installed on the side of the photovoltaic main shaft 23 close to the bearing 211 on the column 21', and the swing arm 43 includes a main shaft connecting portion 431 and a push rod connecting portion 432, and the push rod connecting portion 432 is, for example, configured in the shape of a pin shaft.

[0035] Figure 5 Yes means Figure 4A The swing arm 43 is shown as an enlarged schematic diagram installed on the photovoltaic main shaft 23. Figure 5 The main shaft connection part 431 of the swing arm 43 is, for example, a clamp base 432, which can be clamped together with the swing arm clamp 51 on the photovoltaic main shaft 23 and fixed by bolts, for example.

[0036] Fig. 6A and 6B They are respectively Figure 4A The schematic diagram of the electric push rod installation of the photovoltaic array support angle adjustment system is shown in FIG. Fig. 6A and 6B The electric push rod 61 includes a mounting portion 611, and a trunnion 612 is connected to the mounting portion 611, for example, which is used to mount the portable electric push rod 61 to the Figure 4A The push rod mounting portion 412 of the push rod seat plate 41 is shown. The end of the telescopic inner rod 613 of the electric push rod 61 is provided with an annular connecting portion 6131, which is sleeved on the push rod connecting portion 432 of the swing arm 43.

[0037] The portable electric push rod 61 is also equipped with a mobile power supply 615, a controller 616 and a DC motor 618. The controller 616 receives, for example, a button operation from a user, drives the DC motor 618 to control the extension, retraction and stop of the inner rod 613 of the electric push rod, and receives Hall signal feedback from the DC motor 618. The controller 616 has an intermediate control point memory function, and can memorize the extension and retraction stroke of the inner rod 613 in real time. The mobile power supply 615 uses, for example, a replaceable portable rechargeable battery to power the DC motor 618 and the controller 616.

[0038] Figure 7 2 is a schematic diagram showing a structure of a photovoltaic array support angle adjustment system installed on a column 21' (eg, a middle column). Figure 2 , Figure 3A and Figure 7According to the photovoltaic array support angle adjustment system of the present invention, for example, it is installed on the column 21' located in the middle position. Through the controller 616 on the portable electric push rod 61, the extension and retraction of the inner rod 613 of the electric push rod 61 can be controlled. The inner rod 613 drives the swing arm 43 to swing, thereby driving the photovoltaic main shaft 51 to rotate. Since the photovoltaic components 25 installed on the non-middle column 21' are also adjusted in angle by the rotation of the same photovoltaic main shaft 23, the portable electric push rod 61 installed on the middle column 21' can drive a row (column) of photovoltaic components 25, and then adjust the angle of the photovoltaic components 25, for example, in the north-south direction, so that they can face the sun.

[0039] Next, we will refer to Figures 2 to 7 , a method for adjusting the angle of a photovoltaic array support according to a preferred embodiment of the present invention is described in detail. Step S1, first install the portable electric push rod 61 on the middle column 21' and the swing arm 43. Specifically, the annular connecting portion 6131 of the telescopic inner rod 613 of the electric push rod 61 is inserted into the push rod connecting portion 432 of the swing arm 43. At the same time, for example, a pin 614 is inserted into the ear shaft 612 of the electric push rod 61 and the push rod mounting portion 412 of the push rod seat plate 41 fixed on the middle column 21', so as to install the electric push rod 61 in place. Step S2, loosen the arch bolt 271 installed on all columns 21 including the middle column 21'. Specifically, the nut 272 of the arch bolt 271 is loosened from the arch bolt 271, but not detached from the arch bolt 271. Step S3, the swing of the swing arm 43 is driven by the electric push rod 61 to adjust the orientation of the photovoltaic assembly 25. Specifically, the controller 616 on the electric push rod 61 controls the extension and retraction of the inner rod 613 thereof, and drives the swing arm 43 to swing, so as to adjust the orientation of the photovoltaic assembly 25, for example, in the north-south direction. Step S4, tighten the arch bolt 271 installed on the column 21. Specifically, the nut 272 of the arch bolt 271 installed on the column 21 is tightened on the arch bolt 271, so as to position the photovoltaic assembly 25 through the arch 27. Step S5, remove the electric push rod 61 from the middle column 21'.

[0040] In the photovoltaic array support angle adjustment method according to another preferred embodiment of the present invention, the above step S4 is further decomposed into, for example, step S41, tightening the arch bolts 271 installed on the other columns 21 except the middle column 21'. Specifically, the nuts 272 of the arch bolts 271 installed on the other columns 21 except the middle column 21' are tightened on the arch bolts 271 to position the photovoltaic assembly 25 through the arch 27; step S42, after the electric push rod 61 is removed from the middle column 21', the arch bolts 271 installed on the middle column 21' are tightened.

[0041] In the photovoltaic array support angle adjustment method according to another preferred embodiment of the present invention, the above-mentioned step S5 is further decomposed into, for example, step S51, loosening the electric push rod 61 from the push rod seat plate 41. Specifically, for example, the controller 616 on the electric push rod 61 is used to loosen the electric push rod 61 from the electric push rod seat plate 41 by controlling the switch inching. This is because when the electric push rod 61 is in operation, the pin shaft 614 is relatively stressed, and it is tightly combined with the mounting portion 611 of the push rod 61 and the push rod seat plate 41 and is not easy to disassemble. By using the control switch inching, the three can be gradually loosened, so that the pin shaft 614 can be easily extracted from the mounting portion 611 and the seat plate 41, and finally the electric push rod 61 can be removed. Step S52, remove the electric push rod 61 from the middle column 2'. It can be understood by those skilled in the art that the removed electric push rod 61 can be installed on another row (column) of photovoltaic supports to continue to adjust the angle of the photovoltaic array support.

[0042] According to the above concept of the present invention, those skilled in the art may also make various changes and modifications to the above embodiments of the present invention, but such changes and modifications are within the scope of the present invention defined by the claims.

Claims

1. A photovoltaic array support angle adjustment system, comprising: An electric push rod seat plate installed on a support column, a swing arm installed on a photovoltaic main shaft, and an electric push rod, the swing arm including a main shaft connecting portion that can be fixed on the photovoltaic main shaft and a push rod connecting portion that can be connected to the electric push rod, the photovoltaic main shaft is used to carry a photovoltaic component, the electric push rod is detachably mounted on the electric push rod seat plate, and the telescopic inner rod head of the electric push rod can be sleeved on the push rod connecting portion of the swing arm, the photovoltaic array support angle adjustment system also includes an arch fixed on the back of the photovoltaic component, the arch is connected to the support column by an arch bolt, the support column includes an intermediate column and a non-intermediate column, and the support angle adjustment system is installed on the intermediate column.

2. The system according to claim 1, characterized in that A main shaft bearing is arranged at the top end of the support column, and the photovoltaic main shaft is inserted into the main shaft bearing.

3. The system according to claim 1, characterized in that The push rod seat plate includes a column mounting portion for fixing on the support column and a push rod mounting portion for connecting the electric push rod.

4. A method for adjusting the angle of a photovoltaic array support, comprising the following steps: The portable electric push rod is installed on the middle column and the swing arm of the support column, and the swing arm can be fixed on the photovoltaic main shaft; Loosen the arch bolts installed on the support column for positioning the arch, and fix the end of the arch to the back of the photovoltaic module; The swing arm is driven to swing by the electric push rod to adjust the orientation of the photovoltaic assembly; Tighten the previously loosened arch bolts to determine the orientation of the photovoltaic module; Remove the electric push rod from the middle column.

5. The method according to claim 4, characterized in that The step of tightening the previously loosened arch bolt further comprises the following steps: Tighten the arch bolts on the support columns except the middle column; After the electric push rod is removed from the middle column, the arch bolts on the middle column are tightened.

6. The method according to claim 4, characterized in that The step of removing the electric push rod from the middle column further comprises the following steps: Loosen the electric push rod from the push rod seat plate, the push rod seat plate is used to install the electric push rod on the middle column of the bracket column; Remove the electric push rod from the middle column.

7. The method according to claim 6, characterized in that The step of loosening the electric push rod from the push rod seat plate further includes: loosening the electric push rod from the push rod seat plate by controlling a switch to move in a jog manner through a controller on the electric push rod.

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