AU2018340470A1

AU2018340470A1 - Photovoltaic assembly fixing component and photovoltaic system

Info

Publication number: AU2018340470A1
Application number: AU2018340470A
Authority: AU
Inventors: Hao Cai; Jianmin Li; Kai Yang
Original assignee: Arctech Solar Holding Co Ltd
Current assignee: Arctech Solar Holding Co Ltd
Priority date: 2017-09-26
Filing date: 2018-09-25
Publication date: 2020-02-13
Also published as: WO2019062728A1; CN207218588U; AU2018102163A4

Description

FIXING COMPONENT OF PHOTOVOLTAIC MODULE AND PHOTOVOLTAIC SYSTEM

TECHNICAL FIELD [0001] The disclosure relates to the technical field of structural design of photovoltaic systems, and more particularly, to a fixing component of a photovoltaic module and a photovoltaic system.

BACKGROUND [0002] In photovoltaic power generation, photovoltaic modules are generally fixed on the main beam with purlins. The purlins are usually profiles. A photovoltaic module is usually fixed with two purlins. When the number of components increases, the number of purlins doubles, which leads to an excessive number of purlins and increases the load on the tracker. When one or a group of purlins need to install multiple components, the length of the purlins should be lengthened accordingly. Diagonal braces are usually added at the lower end of the purlins, and the diagonal braces are usually bolted or welded to the main beam and purlins, which increases difficulty and cost of installation. When installing on site, it is usually necessary to first install the main beam on the column, and then install the purlins at a high position. This installation method is difficult, and there are some hidden safety issues in the high installation.

SUMMARY [0003] The purpose of the present disclosure is to provide a fixing component of a photovoltaic module and a photovoltaic system. The fixing component has a simple structure, convenient processing, high structural strength, and easy installation.

[0004] The technical solution provided by the present disclosure is as follows:

[0005] A fixing component of a photovoltaic module includes an upper purlin and a lower purlin. The upper purlin is a long straight bar structure, and a cross section of the upper purlin is an inverted Ω -shaped structure, the upper purlin includes a bottom plate and a pair of side plates, and the pair of side plates are symmetrically disposed on the bottom plate, and ends of the pair of side plates away from the bottom plate extends outward, respectively, to form a support plate; the lower purlin is a bent and elongated structure, the lower purlin includes a bottom and a pair of diagonal braces, a pair of the diagonal braces are symmetrically disposed on the bottom, and the angle between the diagonal brace and the bottom is an obtuse angle, and ends of the pair of diagonal braces away from the bottom extends outward to form a connecting portion; a pair of the connecting portions in the lower purlin are fixedly connected to the bottom plate of the upper purlin, and a mounting portion for installing a main beam is formed between the bottom of the lower purlin and the upper purlin.

[0006] Preferably, the cross section of the lower purlin is an inverted U-shaped structure.

[0007] Preferably, a pair of connecting portions in the lower purlin are fixedly connected to the bottom plate of the upper purlin through a bolt connection assembly, and the bolt connection assembly comprises a bolt and a stop washer, and the head of the bolt is clamped on the upper purlin, and the stop washer is located between the head of the bolt and the bottom plate of the upper purlin.

[0008] Preferably, a cross section of the stop washer is a U-shaped structure, a bottom surface of the stop washer is in contact with the bottom plate of the upper purlin, and the side wall of the stop washer is in contact with the side plate of the upper purlin.

[0009] The disclosure also discloses a photovoltaic system, which includes a main beam, a plurality of photovoltaic modules, and at least one fixing component. The fixing component is a fixing component of the photovoltaic module described above; the photovoltaic module is fixedly disposed on an upper purlin in the fixing component.

[0010] Preferably, the photovoltaic module is fixedly connected to the support plate of the upper purlin through a bolt assembly.

[0011] Preferably, the main beam is sandwiched at an installation portion between the upper purlin and the bottom of the lower purlin, and the main beam, the upper purlin and the diagonal braces of the lower purlin form a triangle structure.

[0012] Preferably, the main beam is a D-tube main beam.

[0013] Preferably, two adjacent photovoltaic modules are fixedly connected through one of the fixing components, and the edges of the photovoltaic modules are fixed on the support plate of the upper purlin.

[0014] Preferably, the fixing components are disposed symmetrically with respect to the main beam, and one of the fixing components is connected with four of the photovoltaic modules, wherein four of the photovoltaic modules are disposed symmetrically with respect to the main beam and four of the photovoltaic modules are symmetrically disposed with respect to the fixing component.

[0015] Preferably, the photovoltaic system further includes:

[0016] a column, a bearing block and a drive means;

[0017] the column is provided with a fixing member, and the bearing block is provided with an arc-shaped hole;

[0018] the fixing member is adjustably provided at the arc-shaped hole, and the adjustment direction is along the length direction of the arc-shaped hole;

[0019] the drive means is fixedly disposed above the bearing block, and the drive means is connected to the main beam at the same time.

[0020] Preferably, the bearing blocks are used in pairs.

[0021] Preferably, the angle adjustment range of the arc-shaped hole is 0-20 °.

[0022] Preferably, the column is provided with a pair of the fixing members, the bearing block is provided with a pair of the arc-shaped holes opposite to each other, and the pair of the fixing members are respectively disposed at the pair of the arc-shaped holes, and the position adjustment direction of the pair of fixing members is opposite.

[0023] Preferably, the column is provided with a plurality of pairs of the fixing members, and the bearing block is provided with a plurality of pairs of arc-shaped holes having the same number as the fixing members, and the positions of each pair of the arc-shaped holes are opposite to each other, each pair of the fixing members is respectively disposed at a pair of the arc-shaped holes, and the position adjustment direction of the pair of fixing members is opposite.

[0024] Preferably, when the arc-shaped holes are a pair, the pair of the arc-shaped holes are arranged in a concentric circle.

[0025] Preferably, when there are multiple pairs of arc-shaped holes, multiple pairs of arc-shaped holes are arranged in concentric circles.

[0026] The fixing component of the photovoltaic module and photovoltaic system provided by the present disclosure can bring at least one of the following beneficial effects:

[0027] 1. The fixing component of the photovoltaic module of the present disclosure is composed of a long straight upper purlin and a bent lower purlin. A pair of diagonal braces in the lower purlin support the two ends of the upper purlin, and its structural strength is high. Furthermore, the upper purlin and the lower purlin can be formed at one time, which is convenient to process and easy to install. In addition, the two side plates in the upper purlin respectively extend outward to form two support plates, and the two support plates can be used to separately support one photovoltaic module, that is, a large number of photovoltaic modules can be fixed by a small number of fixing component in the present disclosure.

[0028] 2. In the present disclosure, the cross-section of the upper purlin is an inverted Ω-shaped structure, and the cross-section of the lower purlin is an inverted U-shaped structure. When the two are connected by a bolt assembly, the structure can be guaranteed to be stable, and the connecting portion can effectively fix the upper purlin and lower purlin.

[0029] 3. In the present disclosure, the stop washer fitted with the upper purlin are provided in the connecting members of the upper purlin and lower purlin to effectively relax and avoid the unstable connection of the upper purlin and lower purlin, thereby further ensuring the reliability of the connection of the upper purlin and lower purlin.

[0030] 4. During the installation of the photovoltaic system of the present disclosure, the upper purlin and lower purlin, the main beam and the photovoltaic modules can be fixed on the column by a lifting device after the installation is completed on the ground, which is different from the existing installation method of the photovoltaic system. This photovoltaic system can complete most of the installation work at a low position, reducing installation difficulty and improving operation safety.

[0031] 5. In the present disclosure, the diagonal braces in the upper purlin and lower purlin and the main beam can form a pair of triangular structures, which are stable and reliable, thereby improving the overall stability of the photovoltaic system.

[0032] 6. In the present disclosure, the fixing member of the column is matched with the arc-shaped hole of the bearing block, and the matching angle of the column and the bearing block can be adjusted. For example, in areas with uneven terrain slopes, the connection angle between the bearing block and the column in the arc-shape hole can be adjusted according to the terrain height difference to achieve the continuity of the tracking system. Preferably, each bearing block is provided with four arc-shaped holes, and the arc surface of each arc-shaped hole is located on an arc line of a concentric circle. The oppositely arranged arc-shaped holes function at the same time when the angle is adjusted. In this way, when the bearing block and the column are installed at a certain angle, the two arc-shaped holes that function at the same time have a good cooperation effect, the connection mode is stable, and it is not easy to slip or loose.

BRIEF DESCRIPTION OF THE DRAWINGS [0033] In the following, preferred embodiments will be described in a clear and understandable manner with reference to the drawings, and the above-mentioned characteristics, technical features, advantages and implementation manners of the present disclosure will be further described.

[0034] FIG. 1 is a schematic structural diagram illustrating a specific embodiment of a fixing component of a photovoltaic module according to the present disclosure.

[0035] FIG. 2 is a cross-sectional view taken along the line A-A of the fixing component of the photovoltaic module shown in FIG. 1.

[0036] FIG. 3 is a schematic structural diagram illustrating an upper purlin in a fixing component of the photovoltaic module shown in FIG. 1.

[0037] FIG. 4 is a schematic structural diagram illustrating a lower purlin in a fixing component of the photovoltaic module shown in FIG. 1.

[0038] FIG. 5 is a front view of the lower purlin shown in FIG. 4.

[0039] FIG. 6 is a top view of a connection between the upper purlin and the lower purlin in the fixing component of the photovoltaic module shown in FIG. 1.

[0040] FIG. 7 is a cross-sectional view taken along the line B-B of the fixing component of the photovoltaic module shown in FIG. 6.

[0041] FIG. 8 is a schematic structural diagram illustrating a specific embodiment of a photovoltaic system of the present disclosure.

[0042] FIG. 9 is an exploded view illustrating an embodiment in which a column and a bearing block are matched in a photovoltaic system of the present disclosure. [0043] FIG. 10 is a diagram illustrating the installation relationship of FIG. 9.

[0044] FIG. 11 is a partially enlarged view of FIG. 10.

[0045] FIG. 12 is a schematic diagram illustrating an embodiment of a bearing block.

[0046] FIG. 13 is a schematic diagram illustrating an embodiment of an arc-shaped hole.

[0047] FIG. 14 is a schematic diagram illustrating an embodiment in which a column, a bearing block and a main beam cooperate in a photovoltaic system of the present disclosure.

[0048] BRIEF DESCRIPTION OF THE DRAWINGS [0049] Upper purlin 10, bottom plate 11, side plate 12, support plate 13, lower purlin 20, bottom 21, diagonal brace 22, connecting portion 23, bolt 31, stop washer 32, photovoltaic module 40, main beam 50.

[0050] Column 60, fixing member 61, bearing block 70, arc-shaped hole 71, and driving means 80.

DETAILED DESCRIPTION OF THE EMBODIMENTS [0051] In order to more clearly explain the embodiments of the present disclosure or the technical solutions in the prior art, specific implementations of the present disclosure will be described below with reference to the accompanying drawings. Obviously, the drawings in the following description are just some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings and other implementations can be obtained based on these drawings without any creative work. In order to make the drawings concise, only the parts related to the present disclosure are schematically shown in the drawings, and they do not represent the actual structure of the product.

[0052] As shown in FIGS. 1 to 6, the specific embodiment discloses a fixing component of a photovoltaic module, which includes an upper purlin 10 and a lower purlin 20. The upper purlin 10 is a long straight bar structure, and the cross-section of the upper purlin 10 is an inverted Ω-shaped structure. The upper purlin 10 includes a bottom plate 11 and a pair of side plates 12, and the pair of side plates 12 are symmetrically disposed on the bottom plate 11. and ends of the pair of side plates 12 away from the bottom plate 11 extends outward, respectively, to form a support plate 13. The lower purlin 20 is a bent and elongated structure, and the cross section of the lower purlin 20 is a U-shaped structure. The lower purlin 20 includes a bottom 21 and a pair of diagonal braces 22. The pair of diagonal braces 22 are symmetrically arranged at both ends of the bottom 21, and the angle between the diagonal brace 22 and the bottom 21 is an obtuse angle, ends of the pair of diagonal braces 22 away from the bottom 21 extend outward to form a connecting portion 23. A pair of the connecting portions 23 in the lower purlin 20 are fixedly connected to the bottom plate 11 of the upper purlin 10, and a mounting portion for installing a main beam is formed between the bottom 21 of the lower purlin 20 and the upper purlin 10.

[0053] As shown in FIG. 6 and FIG. 7, in this specific embodiment, a pair of connecting portions 23 in the lower purlin 20 are fixedly connected to the bottom plate 11 of the upper purlin 10 through a bolt connection assembly, and the bolt assembly includes a bolt 31 and a stop washer 32. The head of the bolt is clamped on the upper purlin 10, and the stop washer is disposed between the head of the bolt 31 and the bottom plate 11 of the upper purlin 10. The cross section of the stop washer is a U-shaped structure. The bottom surface of the stop washer 32 is in contact with the bottom plate 11 of the upper purlin 10, and the side wall of the stop washer is in contact with the side plate 12 of the upper purlin 10. The setting of the stop washer can effectively avoid the unstable connection of the bolt assembly and ensure the connection stability of the upper purlin and lower purlin.

[0054] Certainly, in other specific embodiments of the photovoltaic module fixing component of the present disclosure, the cross section of the lower purlin can also be a rectangular structure or the lower purlin is directly bent from a straight strip plate; the stop washer in the bolt connection assembly connecting the upper purlin and lower purlin can be selectively set. The upper purlin and lower purlin can also be fixed together by welding or other forms of fixing connectors; the specific structure of the upper purlin and lower purlin can be adjusted according to actual needs, and will not be repeated here.

[0055] The disclosure also discloses a photovoltaic system, which includes a main beam 50, a plurality of photovoltaic modules 40, and at least one fixing component. The fixing component is the fixing component of the photovoltaic module disclosed in the above specific embodiments. The photovoltaic module 40 is fixedly disposed on the upper purlin 10 of the fixing component, the main beam 50 is sandwiched at an installation portion between the upper purlin 10 and the bottom 21 of the lower purlin 20, and the main beam, the upper purlin 10 and the diagonal braces 22 of the lower purlin 20 form a triangular structure. The photovoltaic module is fixedly connected to the support plate 13 of the upper purlin 10 through a bolt assembly, and the bolt assembly includes a stop washer. The stop washer can effectively prevent the unstable connection between the photovoltaic module and the fixing component, thereby ensuring the stability and reliability of the overall structure of the photovoltaic system.

[0056] When installing a photovoltaic system, the upper purlin and lower purlin can be fixedly connected on the ground to form a fixing component, then the main beam is fixed on the fixing component, and then the photovoltaic module is fixed on the fixing component. After the photovoltaic system is installed, the photovoltaic system is fixed on the column by the lifting device. The photovoltaic system in this embodiment can be installed at a low position. Compared with the traditional installation method at a high position, the installation method in this embodiment is low in difficulty and high in work safety.

[0057] As shown in FIG. 8, two adjacent photovoltaic modules 40 are fixedly connected through a fixing component. The edges of the photovoltaic modules are fixed on the support plate 13 of the upper purlin 10, and the fixing components are symmetrically disposed with respect to the main beam 50. One fixing component fixes four photovoltaic modules 40 at the same time, wherein the four photovoltaic modules 40 are disposed symmetrically with respect to the main beam 50 and the four photovoltaic modules are disposed symmetrically with respect to the fixing component. When set in this way, more photovoltaic modules can be fixed by a smaller number of fixing components, which saves the production materials and costs of the photovoltaic system, and can reduce the load and energy consumption of the tracker of the photovoltaic system.

[0058] Certainly, in other specific embodiments, the photovoltaic module can also be connected to the fixing components through other fixing connectors or connected by welding; the main beam, the upper purlin and lower purlin can also form a fan-like structure; the relative position of the photovoltaic module and the fixing component can also be adjusted as needed, for example, the middle (non-edge) area of the photovoltaic module is fixed on the support plate of the upper purlin.

[0059] In another embodiment of the photovoltaic system of the present disclosure, the main beam is a D-tube main beam.

[0060] In another embodiment of the photovoltaic system of the present disclosure, the photovoltaic system further includes a column, a bearing block and a drive means. The column is provided with a fixing member, and the bearing block is provided with an arc-shaped hole. The fixing member is adjustably disposed at the arc-shaped hole, and the adjustment direction is along the length direction of the arc-shaped hole; the drive means is fixedly disposed above the bearing block, and the drive means is connected to the main beam at the same time.

[0061] Referring to the embodiment shown in FIGS. 9 to 14, the number of the bearing blocks 70 is a pair, and the bearing blocks 70 are disposed on both sides of the column 60. The pair of bearing blocks are used together to carry the weight of the upper drive means 80. The fixing member 61 of the column 60 is inserted into the arc-shaped hole 71 of the bearing block 70 for fitting. When the fit angle needs to be adjusted, the length and angle of the arc-shaped hole leave adjustment space for the fixing member, so that it is easy to adjust the connection angle between the two, especially in areas with uneven terrain slope, it can be adjusted according to the terrain height difference to achieve the continuity of the tracking system. The drive means 80 is fixed above the bearing block 70, and the drive means 80 is connected to the main beam 50 at the same time. The drive means 80 includes a motor and a rotating structure.

[0062] In the above embodiment, there are two pairs of fixing members 61 on each side of the column 60, and the bearing block 70 is provided with two pairs of arc-shaped holes 71 having the same number of fixing members, and the positions of each pair of arc-shaped holes are opposite to each other. Each pair of fixing pieces are matched with each pair of arc-shaped holes one by one, and the position adjustment direction of each pair of fixing pieces is opposite. For example, in FIG. 11, the fixing member at the upper left comer and the lower right comer or the arc-shaped hole rotate in the opposite direction during adjustment, and the fixing member at the upper right comer and the lower left comer or the arc-shaped hole rotate in the opposite direction during the adjustment. Preferably, the two arc-shaped holes 71 are arranged in concentric circles, and the arc-shaped holes disposed opposite each other function simultaneously when the angle is adjusted. Thus, when the bearing block and the column are installed at an angle and inclined, the two arc-shaped holes that work at the same time have a good cooperation effect, the connection mode is stable, and it is not easy to slip or loose..

[0063] In the above embodiment, the angle adjustment range provided by the two pairs of arc-shaped holes is directly related to the length and diameter of the arc-shaped holes. Preferably, referring to FIG. 13, the angle adjustment range R of the arc-shaped holes is within 0-20 °. Because in actual photovoltaic power stations, the terrain of 0-30 ° can be used to build photovoltaic power stations. If the terrain slope exceeds 30°, engineering vehicles will not be able to travel smoothly on this terrain, which is not suitable for engineering construction.

[0064] In other embodiments, only a pair of fixing members may be provided on the column, and a pair of arc-shaped holes is provided on the bearing block. The pair of arc-shaped holes are opposite to each other. Referring to FIG. 11, only one pair of io arc-shaped holes can be provided at the upper left comer and lower right comer, or only one pair of arc-shaped holes can be provided at the upper right comer and lower left comer. Each arc-shaped hole is matched with a fixing member, and a pair of fixing members adjusts the connection angle with the arc-shaped hole simultaneously. And the position adjustment direction of the pair of fixing members is opposite, that is, the rotation direction is opposite.

[0065] In other embodiments, three or more pairs of fixing members may be provided on the column, and multiple pairs of fixing members are arranged in a concentric circle. The bearing block is provided with three or more pairs of arc-shaped holes, and a plurality of pairs of arc-shaped holes are arranged in a concentric circle, and each pair of arc-shaped holes is opposite to each other. Each arc-shaped hole is matched with a fixing member, and a plurality of pairs of fixing members simultaneously adjust the connection angle with the arc-shaped hole simultaneously. And the position adjustment direction of the pair of fixing members is opposite, that is, the rotation direction is opposite.

[0066] It should be noted that the above embodiments can be freely combined as required. The above is only a preferred embodiment of the present disclosure. It should be noted that, for those of ordinary skill in the art, without departing from the principle of the present disclosure, several improvements and modifications can be made, which should be regarded as the protection scope of the present disclosure.

Claims

WHAT IS CLAIMED IS:

1. A fixing component of a photovoltaic module, comprising an upper purlin and a lower purlin;

the upper purlin is a long straight bar structure, and a cross section of the upper purlin is an inverted Ω -shaped structure, the upper purlin comprises a bottom plate and a pair of side plates, and the pair of side plates are symmetrically disposed on the bottom plate, and ends of the pair of side plates away from the bottom plate extends outward, respectively, to form a support plate;

the lower purlin is a bent and elongated structure, the lower purlin comprises a bottom and a pair of diagonal braces, a pair of the diagonal braces are symmetrically disposed on the bottom, and the angle between the diagonal brace and the bottom is an obtuse angle, and ends of the pair of diagonal braces away from the bottom extends outward to form a connecting portion;

a pair of the connecting portions in the lower purlin are fixedly connected to the bottom plate of the upper purlin, and a mounting portion for installing a main beam is formed between the bottom of the lower purlin and the upper purlin.
2. The fixing component of a photovoltaic module according to claim 1, wherein:

a pair of connecting portions in the lower purlin are fixedly connected to the bottom plate of the upper purlin through a bolt connection assembly, and the bolt connection assembly comprises a bolt and a stop washer, and the head of the bolt is clamped on the upper purlin, and the stop washer is located between the head of the bolt and the bottom plate of the upper purlin.
3. The fixing component of a photovoltaic module according to claim 2, wherein:

a cross section of the stop washer is a U-shaped structure, a bottom surface of the stop washer is in contact with the bottom plate of the upper purlin, and the side wall of the stop washer is in contact with the side plate of the upper purlin.
4. A photovoltaic system comprising a main beam, a plurality of photovoltaic modules and at least one fixing component, wherein:

the fixing component is a fixing component of a photovoltaic module according to any one of claims 1 to 3; the photovoltaic module is fixedly disposed on an upper purlin in the fixing component.
5. The photovoltaic system according to claim 4, wherein:

the photovoltaic module is fixedly connected to the support plate of the upper purlin through the bolt assembly;

and/or, the main beam is sandwiched at an installation portion between the upper purlin and the bottom of the lower purlin, and the main beam, the upper purlin and the diagonal braces of the lower purlin form a triangle structure;

and/or, the main beam is a D-tube main beam.
6. The photovoltaic system according to claim 4, wherein:

two adjacent photovoltaic modules are fixedly connected through one of the fixing components, and the edges of the photovoltaic modules are fixed on the support plate of the upper purlin.
7. The photovoltaic system according to claim 6, wherein:

the fixing components are disposed symmetrically with respect to the main beam, and one of the fixing components is connected with four of the photovoltaic modules, wherein four of the photovoltaic modules are disposed symmetrically with respect to the main beam and four of the photovoltaic modules are symmetrically disposed with respect to the fixing component.
8. The photovoltaic system according to claim 4, wherein it further comprises:

a column, a bearing block and a drive means;

the column is provided with a fixing member, and the bearing block is provided with an arc-shaped hole;

the fixing member is adjustably provided at the arc-shaped hole, and the adjustment direction is along the length direction of the arc-shaped hole;

the drive means is fixedly disposed above the bearing block, and the drive means is connected to the main beam at the same time.
9. The photovoltaic system according to claim 8, wherein:

the bearing blocks are used in pairs;

and/or, the angle adjustment range of the arc-shaped hole is 0-20° ;

and/or, the column is provided with a pair of the fixing members, the bearing block is provided with a pair of the arc-shaped holes opposite to each other, and the pair of the fixing members are respectively disposed at the pair of the arc-shaped holes, and the position adjustment direction of the pair of fixing members is opposite;

or, the column is provided with a plurality of pairs of the fixing members, and the bearing block is provided with a plurality of pairs of arc-shaped holes having the same number as the fixing members, and the positions of each pair of the arc-shaped holes are opposite to each other, each pair of the fixing members is respectively disposed at a pair of the arc-shaped holes, and the position adjustment direction of the pair of fixing members is opposite.
10. The photovoltaic system according to claim 9, wherein:

when the arc-shaped holes are a pair, the pair of the arc-shaped holes are arranged in a concentric circle;

or, when there are multiple pairs of arc-shaped holes, multiple pairs of arc-shaped holes are arranged in concentric circles.