CN112491338A - Solar photovoltaic board mounting bracket of adjustable installation - Google Patents

Solar photovoltaic board mounting bracket of adjustable installation Download PDF

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Publication number
CN112491338A
CN112491338A CN202011262574.8A CN202011262574A CN112491338A CN 112491338 A CN112491338 A CN 112491338A CN 202011262574 A CN202011262574 A CN 202011262574A CN 112491338 A CN112491338 A CN 112491338A
Authority
CN
China
Prior art keywords
supporting
photovoltaic panel
support body
solar photovoltaic
mounting bracket
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011262574.8A
Other languages
Chinese (zh)
Inventor
潘尚鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Seg Longyan Energy Technology Co ltd
Original Assignee
Shenzhen Seg Longyan Energy Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Seg Longyan Energy Technology Co ltd filed Critical Shenzhen Seg Longyan Energy Technology Co ltd
Priority to CN202011262574.8A priority Critical patent/CN112491338A/en
Publication of CN112491338A publication Critical patent/CN112491338A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • H02S20/00—Supporting structures for PV modules
    • H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S25/00—Arrangement of stationary mountings or supports for solar heat collector modules
    • F24S25/20—Peripheral frames for modules
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S30/00—Arrangements for moving or orienting solar heat collector modules
    • F24S30/40—Arrangements for moving or orienting solar heat collector modules for rotary movement
    • F24S30/48—Arrangements for moving or orienting solar heat collector modules for rotary movement with three or more rotation axes or with multiple degrees of freedom
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S30/00—Arrangements for moving or orienting solar heat collector modules
    • F24S2030/10—Special components
    • 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
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/47—Mountings or tracking
    • 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

Abstract

The invention provides an adjustable-installation solar photovoltaic panel installation frame which comprises a bottom plate and a base arranged on the top surface of the bottom plate, wherein a supporting seat is arranged above the base, and the supporting seat is in pivot joint with the base and is reinforced and locked through a bolt; the top of the supporting seat is provided with a support body, the support body is of a hemispherical shell structure, the top of the support body is open, a supporting ball body is arranged in the support body, the top of the support body is provided with a limiting assembly, and the limiting assembly rotationally clamps the supporting ball body in the support body; the top of the supporting sphere is fixedly connected with an installation frame through a connecting block, and the installation frame is used for installing and placing a photovoltaic panel; the middle parts of four sides of the bottom surface of the mounting frame are provided with hanging rings, the top surface of the bottom plate is provided with traction assemblies corresponding to the four hanging rings, pull ropes are hung at the hanging rings, and the other ends of the pull ropes are connected with the traction assemblies; its novel structure, the mounting bracket can be convenient for carry out inclination and adjust, both can make things convenient for the installation of photovoltaic board, also can improve light energy utilization efficiency according to the angle of putting of actual environment adjustment photovoltaic board.

Description

Solar photovoltaic board mounting bracket of adjustable installation
Technical Field
The invention relates to the field of photovoltaic panel mounting structures, in particular to an adjustable-mounting solar photovoltaic panel mounting frame.
Background
As a clean energy source for sustainable development, solar energy has great development and application potential and is more and more paid more attention by governments and various social circles. By popularizing the solar photovoltaic technology, the energy consumption structure of China can be gradually improved, and the energy safety is guaranteed to a certain extent. At present, solar power generation is widely applied, a solar panel used in the solar power generation is installed on an installation frame, the installation frame is composed of a cross beam and a longitudinal beam, the longitudinal beam and the cross beam are connected together through welding or in a screw fixing mode, and the solar panel is fixed on the installation frame through screws. This kind of mounting bracket structure can't carry out nimble regulation according to the actual installation condition, influences solar cell panel's installation effect to can't adjust according to the installation environment of reality, more can't carry out interim strain adjustment.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to solve the technical problem of providing the mounting rack for the solar photovoltaic panel, which is adjustable in installation, has a novel structure, can be used for conveniently adjusting the inclination angle, is convenient for installing the photovoltaic panel, and can be used for adjusting the placing angle of the photovoltaic panel according to the actual environment so as to improve the light energy utilization efficiency.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides an adjustable-installation solar photovoltaic panel installation frame which comprises a bottom plate and a base fixedly installed on the top surface of the bottom plate, wherein a supporting seat is arranged above the base, and the bottom of the supporting seat is in pivot joint with the top of the base and is reinforced and locked through a bolt; the top of the supporting seat is provided with a support body, the support body is of a hemispherical shell structure, the top of the support body is open, a supporting sphere is arranged in the support body, the top of the support body is provided with a limiting assembly, the supporting sphere is limited in the support body by the limiting assembly, and the supporting sphere is rotatably clamped in the support body; the top of the supporting sphere is fixedly connected with an installation frame through a connecting block, and the installation frame is used for installing and placing a photovoltaic panel; the installing frame is square profile structure, rings are all installed at the bottom surface four sides middle part of installing frame, the top surface of bottom plate corresponds four the tractive subassembly is installed to rings, each the rings department all hangs and is equipped with the stay cord, the other end of stay cord with the tractive subassembly is connected, adjusts the tractive subassembly, warp the stay cord is right the inclination of installing frame is adjusted.
In a preferred technical scheme of the invention, the inner wall of the support body is provided with a rubber pad, and the rubber pad is fixedly adhered to the inner wall of the support body.
In a preferred technical scheme of the invention, the limiting assembly comprises two semi-ring plates which are oppositely arranged, the inner walls of the semi-ring plates are matched with the outer wall of the supporting sphere, the two semi-ring plates are connected through screws to form a closed loop with the minimum diameter smaller than the diameter of the supporting sphere, the semi-ring plates are fixed at the top of the support body through screws, and the two butted semi-ring plates limit the supporting sphere.
In a preferred technical scheme of the invention, the traction assembly comprises a winding wheel and a guide wheel, the winding wheel is arranged on the top surface of the bottom plate through a first support mounting frame, a rotating shaft of the winding wheel protrudes out of the outer side of the first support and is fixedly provided with a handle, a ratchet wheel for locking the winding wheel is further arranged on the rotating shaft of the winding wheel, and a pawl is correspondingly arranged on the first support; the guide wheel is arranged on the top surface of the bottom plate through a second support mounting frame and is positioned on one side, away from the base, of the winding wheel, and the pull rope bypasses below the guide wheel and is fixed to the winding wheel through the end portion.
In a preferred technical scheme of the invention, the mounting frame comprises a box body with an open top, a pressing plate is covered on the top of the box body, the pressing plate is matched with the box body in shape, a light-transmitting groove is formed in the middle of the pressing plate, the pressing plate is fixed on the top of the box body through a screw, and the bottom of the box body is fixedly connected with the connecting block.
In a preferred technical scheme of the invention, a transparent protection plate is arranged at the light transmission groove.
In a preferred technical scheme of the invention, the bottom of the box body is provided with a plurality of through holes which are distributed in a rectangular array.
In a preferred technical scheme of the invention, the connecting block comprises an upright column and a plurality of supporting plates fixedly arranged on the outer side of the upright column, the supporting plates are distributed in a circumferential array around the axis of the upright column, the tops of the upright column and the supporting plates are fixedly connected with the bottom surface of the box body, and the bottoms of the upright column and the supporting plates are fixedly connected with the top of the supporting sphere.
The invention has the beneficial effects that:
the mounting frame for the solar photovoltaic panel with adjustable installation, provided by the invention, is novel in structure, the support body, the support ball body and the limiting assembly are designed, so that the mounting frame has a basis capable of swinging, the inclined angle of the mounting frame can be adjusted through the traction assembly by matching with the pull rope and the traction assembly, the placing angle of the photovoltaic panel can be adjusted according to the actual environment, the operation is convenient, and the light energy utilization efficiency is effectively improved; and the base is in pivot joint with the supporting seat and is fixed by the bolt, so that the whole support body can be conveniently adjusted, and the adjustment of a large margin can be conveniently carried out in the primary installation.
Drawings
Fig. 1 is a schematic structural view of an adjustably mounted solar photovoltaic panel mounting frame provided in an embodiment of the present invention;
fig. 2 is a schematic diagram of a matching structure among the bracket, the supporting sphere and the mounting frame provided in the embodiment of the present invention.
In the figure:
100. a base plate; 110. a base; 120. a supporting seat; 130. a support body; 140. a rubber pad; 200. a support sphere; 210. connecting blocks; 211. a column; 212. a support plate; 300. a limiting component; 310. a semi-annular plate; 400. installing a frame; 410. a box body; 420. pressing a plate; 430. a transparent protection plate; 440. a through hole; 510. a hoisting ring; 520. pulling a rope; 600. a pulling assembly; 610. a winding wheel; 620. a guide wheel; 630. a handle.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
As shown in fig. 1 and fig. 2, the embodiment of the invention discloses an adjustable-installation solar photovoltaic panel installation frame, which comprises a bottom plate 100 and a base 110 fixedly installed on the top surface of the bottom plate 100, wherein a support seat 120 is arranged above the base 110, and the bottom of the support seat 120 is pivotally connected and matched with the top of the base 110 and is fastened and locked by bolts; the top of the supporting seat 120 is provided with a support body 130, the support body 130 is of a hemispherical shell structure, the top of the support body 130 is open, a supporting sphere 200 is arranged in the support body 130, the top of the support body 130 is provided with a limiting assembly 300, the limiting assembly 300 limits the supporting sphere 200 in the support body 130, and the supporting sphere 200 is rotatably clamped in the support body 130; the top of the support sphere 200 is fixedly connected with an installation frame 400 through a connection block 210, and the installation frame 400 is used for installing and placing a photovoltaic panel; installing frame 400 is square profile structure, rings 510 are all installed at the bottom surface four sides middle part of installing frame 400, the top surface of bottom plate 100 corresponds four rings 510 install tractive subassembly 600, each rings 510 department all hangs and is equipped with stay cord 520, the other end of stay cord 520 with tractive subassembly 600 is connected, adjusts tractive subassembly 600, warp stay cord 520 is right the inclination of installing frame 400 is adjusted.
The solar photovoltaic panel mounting frame capable of being mounted in an adjustable mode is novel in structure, the support body 130, the support ball body 200 and the limiting assembly 300 are designed, so that the mounting frame 400 has a basis capable of swinging, the angle of inclination of the mounting frame 400 can be adjusted through the pulling assembly 600 by matching with the pull rope 520 and the pulling assembly 600 without performing large-amplitude actions, the angle of the photovoltaic panel can be adjusted according to the actual environment, the operation is convenient, and the light energy utilization efficiency is effectively improved; moreover, the base 110 and the supporting base 120 are pivotally connected and fixed by bolts, so that the whole supporting body 130 can be conveniently adjusted, and the adjustment of a large margin can be conveniently carried out during the initial installation.
Further, a rubber pad 140 is arranged on the inner wall of the support body 130, and the rubber pad 140 is fixedly adhered to the inner wall of the support body 130; the structural design can ensure that a strong friction force exists between the support body 130 and the support ball 200, prevent the support ball 200 and the support body 130 from easily rotating, and ensure that the support ball 200 can only rotate after being pulled by the pull rope 520.
Further, the limiting assembly 300 includes two opposite semi-ring plates 310, the inner wall of the semi-ring plate 310 is fitted with the outer wall of the supporting sphere 200, the two semi-ring plates 310 are connected by screws to form a closed loop with a minimum diameter smaller than the diameter of the supporting sphere 200, the semi-ring plates 310 are fixed on the top of the bracket 130 by screws, and the supporting sphere 200 is limited by the two abutting semi-ring plates 310; this structural design can make things convenient for the installation of spacing subassembly 300, ensures just install additional at the top of holding in the palm body 130 after the installation of support spheroid 200 to the realization is spacing to support spheroid 200, makes support spheroid 200 rotate the card in holding in the palm inside the body 130.
Further, the pulling assembly 600 comprises a winding wheel 610 and a guide wheel 620, the winding wheel 610 is arranged on the top surface of the bottom plate 100 through a first support mounting frame, a rotating shaft of the winding wheel 610 protrudes out of the outer side of the first support and is fixedly provided with a handle 630, a ratchet wheel for locking the winding wheel 610 is further mounted on the rotating shaft of the winding wheel 610, and a pawl is correspondingly mounted on the first support; the guide wheel 620 is arranged on the top surface of the bottom plate 100 through a second bracket mounting frame and is positioned on one side of the winding wheel 610 far away from the base 100, and the pull rope 520 is wound from the lower part of the guide wheel 620 and is fixed on the winding wheel 610 at the end part; the structure design can realize the winding or releasing of the pull rope 520 by rotating the handle 630, and realize the angle adjustment; it should be noted that, during the adjustment, the ratchet wheel needs to be unlocked by each pawl.
Further, the mounting frame 400 includes a box body 410 with an open top, a pressing plate 420 is covered on the top of the box body 410, the pressing plate 420 is matched with the box body 410 in shape, a light-transmitting groove is formed in the middle of the pressing plate 420, the pressing plate 420 is fixed to the top of the box body 410 through a screw, and the bottom of the box body 410 is fixedly connected with the connecting block 210; this structural design can make things convenient for the dismouting of photovoltaic board, is convenient for overhaul or the replacement to the photovoltaic board.
Further, transparent guard plate 430 is installed to light-transmitting groove department, and the design of transparent guard plate 430 neither influences normal light and shines, also can protect the photovoltaic board.
Further, the bottom of the box body 410 is provided with a plurality of through holes 440, and the through holes 440 are distributed in a rectangular array.
Further, the connecting block 210 includes a vertical column 211 and a plurality of supporting plates 212 fixedly disposed on the outer side of the vertical column 211, the supporting plates 212 are distributed in a circumferential array around the axis of the vertical column 211, the tops of the vertical column 211 and the supporting plates 212 are both fixedly connected with the bottom surface of the box body 410, and the bottoms of the vertical column 211 and the supporting plates 212 are both fixedly connected with the top of the supporting sphere 200; the structural strength of the connecting block is enhanced, and the overall connecting strength can be enhanced.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.

Claims (8)

1. The utility model provides a solar photovoltaic board mounting bracket of adjustable installation which characterized in that:
the device comprises a bottom plate (100) and a base (110) fixedly mounted on the top surface of the bottom plate (100), wherein a supporting seat (120) is arranged above the base (110), and the bottom of the supporting seat (120) is in pivot joint with the top of the base (110) and is reinforced and locked through a bolt; the supporting seat is characterized in that a supporting body (130) is installed at the top of the supporting seat (120), the supporting body (130) is of a hemispherical shell structure, the top of the supporting body is open, a supporting sphere (200) is arranged in the supporting body (130), a limiting assembly (300) is installed at the top of the supporting body (130), the supporting sphere (200) is limited in the supporting body (130) by the limiting assembly (300), and the supporting sphere (200) is rotatably clamped in the supporting body (130); the top of the supporting sphere (200) is fixedly connected with an installation frame (400) through a connecting block (210), and the installation frame (400) is used for installing and placing a photovoltaic panel;
installing frame (400) are square profile structure, rings (510) are all installed at the bottom surface four sides middle part of installing frame (400), the top surface of bottom plate (100) corresponds four traction subassembly (600) is installed in rings (510), each traction subassembly (520) are all hung in rings (510) department and are equipped with stay cord (520), the other end of stay cord (520) with traction subassembly (600) are connected, adjust traction subassembly (600), warp stay cord (520) are right the inclination of installing frame (400) is adjusted.
2. The adjustably mountable solar photovoltaic panel mounting bracket of claim 1, wherein:
the inner wall of the support body (130) is provided with a rubber pad (140), and the rubber pad (140) is fixedly adhered to the inner wall of the support body (130).
3. The adjustably mountable solar photovoltaic panel mounting bracket of claim 1, wherein:
the limiting assembly (300) comprises two semi-ring plates (310) which are arranged oppositely, the inner walls of the semi-ring plates (310) are matched with the outer wall of the supporting ball body (200), the two semi-ring plates (310) are connected through screws to form a closed ring with the minimum diameter smaller than the diameter of the supporting ball body (200), the semi-ring plates (310) are fixed to the top of the support body (130) through screws, and the supporting ball body (200) is limited by the two butted semi-ring plates (310).
4. The adjustably mountable solar photovoltaic panel mounting bracket of claim 1, wherein:
the traction assembly (600) comprises a winding wheel (610) and a guide wheel (620), the winding wheel (610) is arranged on the top surface of the bottom plate (100) through a first support mounting frame, a rotating shaft of the winding wheel (610) protrudes out of the outer side of the first support and is fixedly provided with a handle (630), a ratchet wheel used for locking the winding wheel (610) is further installed on the rotating shaft of the winding wheel (610), and a pawl is correspondingly installed on the first support;
the guide wheel (620) is arranged on the top surface of the bottom plate (100) through a second support mounting frame and located on one side, far away from the base (100), of the winding wheel (610), and the pull rope (520) bypasses from the lower portion of the guide wheel (620) and is fixed to the winding wheel (610) through the end portion.
5. The adjustably mountable solar photovoltaic panel mounting bracket of claim 1, wherein:
the mounting frame (400) includes open box body (410) in top, the top lid of box body (410) is equipped with clamp plate (420), clamp plate (420) with box body (410) shape adaptation, the light-transmitting groove has been seted up at the middle part of clamp plate (420), clamp plate (420) pass through the fix with screw in the top of box body (410), the bottom of box body (410) with connecting block (210) fixed connection.
6. The adjustably mountable solar photovoltaic panel mounting bracket of claim 5, wherein:
and a transparent protection plate (430) is arranged at the light transmission groove.
7. The adjustably mountable solar photovoltaic panel mounting bracket of claim 5, wherein:
a plurality of through holes (440) are formed in the bottom of the box body (410), and the through holes (440) are distributed in a rectangular array.
8. The adjustably mountable solar photovoltaic panel mounting bracket of claim 5, wherein:
connecting block (210) include stand (211), fix and locate polylith backup pad (212) in the stand (211) outside, backup pad (212) wind the axis of stand (211) is circumference array distribution, stand (211) the top of backup pad (212) all with the bottom surface fixed connection of box body (410), stand (211) the bottom of backup pad (212) all with the top fixed connection who supports spheroid (200).
CN202011262574.8A 2020-11-12 2020-11-12 Solar photovoltaic board mounting bracket of adjustable installation Pending CN112491338A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011262574.8A CN112491338A (en) 2020-11-12 2020-11-12 Solar photovoltaic board mounting bracket of adjustable installation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011262574.8A CN112491338A (en) 2020-11-12 2020-11-12 Solar photovoltaic board mounting bracket of adjustable installation

Publications (1)

Publication Number Publication Date
CN112491338A true CN112491338A (en) 2021-03-12

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ID=74930097

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011262574.8A Pending CN112491338A (en) 2020-11-12 2020-11-12 Solar photovoltaic board mounting bracket of adjustable installation

Country Status (1)

Country Link
CN (1) CN112491338A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102868322A (en) * 2011-07-08 2013-01-09 上阳能源科技有限公司 Solar generator apparatus with cable-controlled tracking
CN103981989A (en) * 2013-02-08 2014-08-13 上阳能源科技有限公司 Building with solar sun-tracking device
CN110086416A (en) * 2019-05-16 2019-08-02 苏州聚晟太阳能科技股份有限公司 A kind of photovoltaic system angle-adjusting bracket on level land
CN110855224A (en) * 2019-11-28 2020-02-28 中国电建集团贵州电力设计研究院有限公司 Structurally reinforced photovoltaic panel fixing frame and mounting method
CN111404469A (en) * 2020-04-21 2020-07-10 兰金美 Solar power generation device capable of automatically adjusting angle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102868322A (en) * 2011-07-08 2013-01-09 上阳能源科技有限公司 Solar generator apparatus with cable-controlled tracking
US20130008489A1 (en) * 2011-07-08 2013-01-10 Luo Chia Ching Solar generator apparatus with cable-controlled tracking
CN103981989A (en) * 2013-02-08 2014-08-13 上阳能源科技有限公司 Building with solar sun-tracking device
CN110086416A (en) * 2019-05-16 2019-08-02 苏州聚晟太阳能科技股份有限公司 A kind of photovoltaic system angle-adjusting bracket on level land
CN110855224A (en) * 2019-11-28 2020-02-28 中国电建集团贵州电力设计研究院有限公司 Structurally reinforced photovoltaic panel fixing frame and mounting method
CN111404469A (en) * 2020-04-21 2020-07-10 兰金美 Solar power generation device capable of automatically adjusting angle

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Application publication date: 20210312