CN108540077B - Photovoltaic module fixing device suitable for flexible support - Google Patents
Photovoltaic module fixing device suitable for flexible support Download PDFInfo
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- CN108540077B CN108540077B CN201810138508.6A CN201810138508A CN108540077B CN 108540077 B CN108540077 B CN 108540077B CN 201810138508 A CN201810138508 A CN 201810138508A CN 108540077 B CN108540077 B CN 108540077B
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- photovoltaic module
- connecting piece
- cable
- photovoltaic
- inclined connecting
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- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 238000013016 damping Methods 0.000 abstract description 2
- 230000001629 suppression Effects 0.000 abstract description 2
- 244000145845 chattering Species 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S30/00—Structural details of PV modules other than those related to light conversion
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Photovoltaic Devices (AREA)
Abstract
The invention discloses a photovoltaic module fixing device suitable for a flexible support, which comprises an inclined connecting piece, wherein two ends of the inclined connecting piece are respectively hinged with two adjacent photovoltaic modules, the axis of the inclined connecting piece is not perpendicular to the photovoltaic modules, and the inclined connecting piece is connected with a cable. According to the invention, the photovoltaic module frame is hinged with the fixing device, the photovoltaic module and the photovoltaic module are connected in series in a foldable manner through the device, and the telescopic deformation of the cable is not transmitted to the photovoltaic module any more; meanwhile, under wind-induced vibration, the photovoltaic module string is folded, so that system damping is increased equivalently, and the suppression of the chattering effect is facilitated.
Description
Technical Field
The invention relates to the field of photovoltaics, in particular to a photovoltaic module fixing device suitable for a flexible support.
Background
With the vigorous development of the photovoltaic industry, in order to adapt to various complex installation environments such as mountainous regions, water surfaces and roofs, the flexible support obtains more and more extensive attention and application due to the advantages of large span, high utilization efficiency of material mechanical properties, low cost and the like.
However, compared with the traditional steel lattice type support, the flexible support can generate large mid-span deflection deformation (reaching 1/15 to 1/20 of span) under the action of self weight, wind load and snow load, and the flexible steel cable can stretch out in a non-negligible way. The elongation is transmitted to the photovoltaic module through the module fixing point, so that the photovoltaic module (panel) bears large in-plane tensile stress, and the frame of the photovoltaic module is likely to be pulled and cracked, the cell is hidden and the module is loosened and even falls off.
The existing flexible photovoltaic support system fixes a photovoltaic module on a steel strand, and then fixes two ends of the steel strand on a steel frame beam or other supports erected from the ground.
The prior art has the following defects:
1. taking a 20m span as an example, considering a deflection of 1/15, the elongation of the cable can reach 236 mm. Considering 20 modules are vertically installed, the average relative displacement of east-west frame fixing points of a single module is 11.8 mm. Such large deformation can easily lead to frame crack of the assembly, hidden crack of the battery piece, loosening of the assembly and even falling off.
2. Under the effect of pulsating wind pressure, wind-induced vibration can occur to the structure of photovoltaic module and cable, influences the normal operating of system, can destroy photovoltaic module's electrical connection, can lead to structural failure when serious.
Disclosure of Invention
The invention aims to provide a photovoltaic module fixing device suitable for a flexible support.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
the invention discloses a photovoltaic module fixing device suitable for a flexible support, which comprises an inclined connecting piece, wherein two ends of the inclined connecting piece are respectively hinged with two adjacent photovoltaic modules, the axis of the inclined connecting piece is not perpendicular to the photovoltaic modules, and the inclined connecting piece is connected with a cable.
Furthermore, a self-locking bolt is arranged on the hinge mechanism of the inclined connecting piece and the photovoltaic module.
Preferably, the cable is connected with the inclined connecting piece through a U-shaped bolt, two screw rods of the U-shaped bolt penetrate through the inclined connecting piece and are fixed through a nut, and the cable penetrates between the two screw rods of the U-shaped bolt.
Preferably, the inclined connecting piece is made of aluminum alloy.
Preferably, the U-shaped bolt is positioned in the middle of the inclined connecting piece.
Furthermore, the photovoltaic module comprises at least three photovoltaic modules which are arranged in the same direction, and the inclination directions of the adjacent inclined connecting pieces are different.
Furthermore, at least two oblique connecting pieces are arranged between the adjacent photovoltaic modules, and the oblique connecting pieces between the adjacent photovoltaic modules have the same oblique direction.
Preferably, the angle of rotation of the diagonal connector relative to the cable is no more than 15 °.
Preferably, the oblique connecting piece is hinged with the side wall of the photovoltaic module.
Preferably, the cable is a flexible cable
The invention provides a fixing device of a photovoltaic assembly on a steel cable (comprising a steel strand), which is formed by pairing an aluminum alloy (or other metal materials) inclined connecting piece, a self-locking bolt, a U-shaped bolt and a frameless assembly expansion piece.
The key points of the invention are as follows:
1. the assembly is not directly connected with the cable;
2. the assembly is hinged with the inclined connecting rod and fixed by a self-locking bolt, so that the bolt is prevented from loosening in the processes of loading and unloading;
3. the assembly realizes folding series connection ("/\\/\\.") through an oblique connecting rod piece, so that the assembly string has the capability of telescoping in the east-west direction; the inclined connecting rod and the cable have a certain inclination angle;
4. the inclined connecting rod and the cable are connected in a displacement locking manner through a U-shaped bolt or other connection modes;
5. due to the flexibility of the cable, the inclined connecting rod can rotate around the U-shaped connecting point within a certain allowed range, and the rotating angle is generally not more than 15 degrees;
6. in order to ensure that the connecting point of the rod piece and the cable rotates to zero or approaches to zero when the cable is pulled at the limit under the bearing state, the U-shaped connecting point can actively deflect a certain angle in the initial state.
According to the invention, the photovoltaic module frame is hinged with the fixing device, the photovoltaic module and the photovoltaic module are connected in series in a foldable manner through the device, and the telescopic deformation of the cable is not transmitted to the photovoltaic module any more; meanwhile, under wind-induced vibration, the assembly string is folded, so that system damping is increased, and the suppression of the vibration effect is facilitated.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the diagonal connector;
FIG. 3 is a schematic diagram of the present invention;
in the figure: the photovoltaic module comprises a photovoltaic module 1, an inclined connecting piece 2, a cable 3, a self-locking bolt 21 and a U-shaped bolt 22.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings.
As shown in fig. 1 and 2, the photovoltaic module fixing device suitable for the flexible support comprises an inclined connecting piece 2, wherein the inclined connecting piece 2 is made of aluminum alloy, two ends of the inclined connecting piece 2 are respectively hinged with the side walls of two adjacent photovoltaic modules 1 and are fixed by self-locking bolts 21, the axis of the inclined connecting piece 2 is not perpendicular to the photovoltaic modules 1, and the inclined connecting piece is connected with a cable 3.
Specifically, the cable 3 is connected with the inclined connecting piece 2 through a U-shaped bolt 22, the U-shaped bolt 22 is located in the middle of the inclined connecting piece 2, two screw rods of the U-shaped bolt 22 penetrate through the inclined connecting piece 3 and are fixed through a nut, the cable 3 penetrates through the space between the two screw rods of the U-shaped bolt 22, the cable 3 is tightly pressed between the U-shaped bolt 22 and the inclined connecting piece 3 through fastening the U-shaped bolt 22, and of course, other connection modes are adopted between the cable 3 and the inclined connecting piece 2 and in the pediatrics department, so that displacement locking connection is achieved.
As shown in fig. 3, in practical application, the photovoltaic module comprises at least three photovoltaic modules 1 arranged in the same direction, at least two oblique connecting members 2 are arranged between adjacent photovoltaic modules 1, the oblique connecting members 2 between adjacent photovoltaic modules 1 have the same oblique direction, and are fixed by using at least two cables 3, and the oblique directions of the adjacent oblique connecting members 2 on the same cable 3 are different.
When the photovoltaic modules 1 bear wind pressure and snow pressure, along with the extension of the cables 3, the fixed points of the inclined connecting pieces 2 and the cables 3 are relatively displaced, the included angles of the inclined connecting pieces 2 and the cables 3 are reduced (the angle change is controlled within 15 degrees), and the distance between the photovoltaic modules 1 is increased; meanwhile, the photovoltaic modules 1 are displaced in the length direction of the cable 3, and the direction of the movement of the adjacent photovoltaic modules 1 along the normal direction of the cable 3 is opposite.
The present invention is capable of other embodiments, and various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a photovoltaic module fixing device suitable for flexible support which characterized in that: the photovoltaic module comprises an oblique connecting piece, wherein two ends of the oblique connecting piece are respectively hinged with two adjacent photovoltaic modules, the axis of the oblique connecting piece is not perpendicular to the photovoltaic modules, and the oblique connecting piece is connected with a cable;
the cable is connected with the inclined connecting piece through a U-shaped bolt, two screw rods of the U-shaped bolt penetrate through the inclined connecting piece and are fixed through a nut, and the cable penetrates between the two screw rods of the U-shaped bolt;
the U-shaped bolt is positioned in the middle of the inclined connecting piece;
the photovoltaic module comprises at least three photovoltaic modules which are arranged in the same direction, and the inclination directions of the adjacent oblique connecting pieces are different.
2. The photovoltaic module holding apparatus for a flexible rack according to claim 1, wherein: and a self-locking bolt is arranged on the hinge mechanism of the inclined connecting piece and the photovoltaic module.
3. The photovoltaic module holding apparatus for a flexible rack according to claim 1, wherein: the inclined connecting piece is made of aluminum alloy.
4. The photovoltaic module holding apparatus for a flexible rack according to claim 1, wherein: at least two oblique connecting pieces are arranged between the adjacent photovoltaic modules, and the oblique connecting pieces between the adjacent photovoltaic modules have the same oblique direction.
5. The photovoltaic module holding apparatus for a flexible rack according to claim 1, wherein: the angle of rotation of the diagonal connector relative to the cable is no more than 15 °.
6. The photovoltaic module holding apparatus for a flexible rack according to claim 1, wherein: the oblique connecting piece is hinged with the side wall of the photovoltaic module.
7. The photovoltaic module holding apparatus for a flexible rack according to claim 1, wherein: the cable is a flexible cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810138508.6A CN108540077B (en) | 2018-02-10 | 2018-02-10 | Photovoltaic module fixing device suitable for flexible support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810138508.6A CN108540077B (en) | 2018-02-10 | 2018-02-10 | Photovoltaic module fixing device suitable for flexible support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108540077A CN108540077A (en) | 2018-09-14 |
| CN108540077B true CN108540077B (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810138508.6A Active CN108540077B (en) | 2018-02-10 | 2018-02-10 | Photovoltaic module fixing device suitable for flexible support |
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| CN (1) | CN108540077B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101523126A (en) * | 2006-08-23 | 2009-09-02 | 清凉地球太阳能公司 | Inflatable solar concentrator balloon method and apparatus |
| CN105720901A (en) * | 2016-04-25 | 2016-06-29 | 中兴能源（天津）有限公司 | Flexible support fixing structure |
| CN106712677A (en) * | 2017-01-23 | 2017-05-24 | 巨力新能源股份有限公司 | Photovoltaic module installation system with adjustable dip angle |
| CN206313706U (en) * | 2016-12-27 | 2017-07-07 | 北京科诺伟业科技股份有限公司 | Photovoltaic module elasticity retaining frame |
| CN206379919U (en) * | 2017-01-21 | 2017-08-04 | 河北大道至简新能源科技有限公司 | A kind of flexible tiltedly rotatable Photovoltaic array support of single axle |
| CN107027335A (en) * | 2014-10-03 | 2017-08-08 | 5B·Ip控股有限公司 | Portable photovoltaic array |
| CN206816135U (en) * | 2017-06-21 | 2017-12-29 | 保定嘉盛光电科技股份有限公司 | A kind of folding window for collecting solar energy |
| CN207869058U (en) * | 2018-02-10 | 2018-09-14 | 通威股份有限公司 | A kind of photovoltaic module fixing device suitable for flexible support |
-
2018
- 2018-02-10 CN CN201810138508.6A patent/CN108540077B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101523126A (en) * | 2006-08-23 | 2009-09-02 | 清凉地球太阳能公司 | Inflatable solar concentrator balloon method and apparatus |
| CN107027335A (en) * | 2014-10-03 | 2017-08-08 | 5B·Ip控股有限公司 | Portable photovoltaic array |
| CN105720901A (en) * | 2016-04-25 | 2016-06-29 | 中兴能源（天津）有限公司 | Flexible support fixing structure |
| CN206313706U (en) * | 2016-12-27 | 2017-07-07 | 北京科诺伟业科技股份有限公司 | Photovoltaic module elasticity retaining frame |
| CN206379919U (en) * | 2017-01-21 | 2017-08-04 | 河北大道至简新能源科技有限公司 | A kind of flexible tiltedly rotatable Photovoltaic array support of single axle |
| CN106712677A (en) * | 2017-01-23 | 2017-05-24 | 巨力新能源股份有限公司 | Photovoltaic module installation system with adjustable dip angle |
| CN206816135U (en) * | 2017-06-21 | 2017-12-29 | 保定嘉盛光电科技股份有限公司 | A kind of folding window for collecting solar energy |
| CN207869058U (en) * | 2018-02-10 | 2018-09-14 | 通威股份有限公司 | A kind of photovoltaic module fixing device suitable for flexible support |
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| CN108540077A (en) | 2018-09-14 |
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Effective date of registration: 20200707 Address after: Room 3501, 35 / F, building 1, No. 588, middle section of Tianfu Avenue, high tech Zone, Chengdu, Sichuan 610000 Patentee after: Tongwei new energy Co., Ltd Address before: 610000 No. 588, Tianfu Road, Chengdu hi tech Zone, Sichuan, China Patentee before: TONGWEI Co.,Ltd. |
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