CN111404463A - Self-cleaning multi-angle photovoltaic power generation device - Google Patents
Self-cleaning multi-angle photovoltaic power generation device Download PDFInfo
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- CN111404463A CN111404463A CN202010233056.7A CN202010233056A CN111404463A CN 111404463 A CN111404463 A CN 111404463A CN 202010233056 A CN202010233056 A CN 202010233056A CN 111404463 A CN111404463 A CN 111404463A
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- 238000010248 power generation Methods 0.000 title claims abstract description 27
- 238000004140 cleaning Methods 0.000 title claims abstract description 19
- 238000004804 winding Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 9
- 230000006872 improvement Effects 0.000 description 8
- 230000009471 action Effects 0.000 description 6
- 244000309464 bull Species 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000003139 buffering effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 230000007306 turnover 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
- H02S20/00—Supporting structures for PV modules
- H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
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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
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/10—Cleaning arrangements
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- 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 relates to the technical field of photovoltaic power generation, in particular to a self-cleaning multi-angle photovoltaic power generation device which comprises a base, supporting frames and a V-shaped plate, wherein the supporting frames are fixedly arranged at the front end and the rear end of the upper surface of the base; according to the photovoltaic panel adjusting device, the photovoltaic panel is adjusted through the light intensity sensor, meanwhile, the surface of the photovoltaic panel can be cleaned regularly, the linkage structure is novel, and the effect is excellent.
Description
Technical Field
The invention relates to the technical field of photovoltaic power generation, in particular to a self-cleaning multi-angle photovoltaic power generation device.
Background
Solar energy is used as a green energy source, and is widely applied to various fields by the advantages of no exhaustion, environmental protection, safety, no region limitation and the like. In the practical application of solar photovoltaic power generation, the photovoltaic module is taken as the most important unit for power generation, and the output power of the photovoltaic module is directly influenced by the illumination intensity of sunlight. In addition, most photovoltaic modules are installed outdoors to generate electricity, and when sand blown by wind, dust, snow, and the like fall on the surfaces of the photovoltaic modules, the light transmittance is reduced, so that the photoelectric conversion efficiency is greatly reduced. Therefore, the photoelectric conversion efficiency of the photovoltaic power generation device needs to be improved, and improvements in both the time for receiving light and the increase in the light projection rate are needed.
The utility model discloses a patent is CN 208445524U's utility model discloses a self-cleaning formula multi-angle photovoltaic power generation device, including unable adjustment base, apron, first photovoltaic board and lightning-arrest lead wire, unable adjustment base's upper end is connected with the spring, and the upper end of spring installs the electricity storage box, and the apron is fixed in the outside of clamping ring, and the surface of apron is provided with the antirust coat, and first photovoltaic board is installed in the left side of connecting rod, and the right side of connecting rod installs second photovoltaic board, and lightning-arrest lead wire is installed in the inside of connecting rod. First photovoltaic board and second photovoltaic board on this kind of automatically cleaning formula multi-angle photovoltaic power generation device can rotate through connecting the pivot to can make things convenient for device operating angle's transform, have certain automatically cleaning nature moreover, but the unable accurate control of servo motor turned angle makes this photovoltaic power generation device not practical, and its clean effect is relatively poor moreover, can not regularly clear up the upper surface of photovoltaic board. Therefore, aiming at the defects of the existing photovoltaic power generation device, the invention provides the photovoltaic panel power generation device which can automatically turn over the photovoltaic panel to receive illumination and can clean the upper surface of the photovoltaic panel at regular time, which is a technical problem to be solved.
Disclosure of Invention
The invention aims to solve the technical problem that a self-cleaning multi-angle photovoltaic power generation device is designed to solve the defects that the rotation angle of the conventional photovoltaic power generation device cannot be accurately controlled when the conventional photovoltaic power generation device rotates through a servo motor, and the upper surface of a photovoltaic plate cannot be cleaned regularly.
The invention is realized by the following technical scheme:
a self-cleaning multi-angle photovoltaic power generation device comprises a base, supporting frames and a V-shaped plate, wherein the supporting frames are fixedly arranged at the front end and the rear end of the upper surface of the base, the V-shaped plate is fixedly connected to the upper ends of the two supporting frames, a groove is formed in the upper surface of the V-shaped plate, V-shaped chutes are formed in the front side wall and the rear side wall of the groove, a photovoltaic panel fixing frame is arranged in the groove, sliding shafts are connected to the middle of the front side surface and the rear side surface of the photovoltaic panel fixing frame, and the two sliding shafts are respectively arranged in the corresponding;
the upper surface of the photovoltaic plate fixing frame is provided with a mounting groove, a photovoltaic plate is arranged in the mounting groove, strip-shaped grooves are formed in the front side wall and the rear side wall of the mounting groove, which are positioned above the photovoltaic plate, the upper surface of the photovoltaic plate is provided with a brush strip, the front end and the rear end of the brush strip are connected with sliding blocks, the sliding blocks can slide along the strip-shaped grooves, the lower surface of the brush strip is provided with a brush, the left end and the right end of each strip-shaped groove are provided with through holes, the inner wall of the lower end of each groove is provided with a leading rope hole corresponding to the through holes, and;
a storage battery is arranged on the base, a servo motor is arranged beside the storage battery, a driving gear is arranged on an output shaft of the servo motor, rotating rods are arranged at the left end and the right end of the servo motor, the rotating rods are provided with driven gears engaged with the driving gears, the front and rear ends of the rotating rods are provided with rotating brackets, the front end and the rear end of the rotating rod are rotatably arranged on the rotating bracket, the front end and the rear end of the rotating rod are also provided with a winding wheel, the winding wheel is provided with a traction rope which penetrates through the rope guiding hole through the guide wheel, the end part of the traction rope is connected with the sliding block through a through hole, a light intensity sensor is arranged on the upper surface of the photovoltaic panel fixing frame positioned on the V-shaped plate, the light intensity sensor is connected with the controller, and the signal output end of the controller is connected with the servo motor.
As a further improvement of the scheme, a plurality of round holes are formed in the left end face and the right end face of the V-shaped plate and communicated with the grooves, and inserting columns corresponding to the round holes are arranged on the left end face and the right end face of the photovoltaic panel fixing frame.
As a further improvement of the scheme, the inner walls of the two lower ends of the groove are provided with accommodating grooves, the accommodating grooves are connected with springs, and the outer ends of the springs are connected with buffer strips.
As a further improvement of the scheme, the supporting frame comprises a vertical rod and inclined rods, the inclined rods are arranged on the left side and the right side of the top end of the vertical rod, and the upper surfaces of the inclined rods are connected with the lower surfaces of the V-shaped plates.
As a further improvement of the scheme, the included angle range of the V-shaped plate is 90-120 degrees.
As a further improvement of the scheme, the traction rope is a soft steel wire.
As a further improvement of the scheme, the storage battery, the servo motor, the driven gear and the driving gear are provided with dustproof outer covers.
Has the advantages that:
1. compared with the prior art, the invention senses the light intensity through the light intensity sensor, when the light irradiates the back of the photovoltaic panel, the light intensity sensor sends a signal, the servo motor is driven to rotate through the controller, so that under the action of the driving gear and the driven gear, the two rotating rods rotate reversely, the traction rope on the winding wheel at one end is wound, the traction rope on the winding wheel at the other end is unwound, the photovoltaic panel fixing frame is under the tension action of the traction rope, the brush panel strip cleans the photovoltaic panel along the upper surface of the photovoltaic panel when the brush panel strip is pulled to the top end, the whole photovoltaic panel mounting frame moves upwards under the action of the tension, when the photovoltaic panel mounting frame moves to the top end of the V-shaped panel, the photovoltaic panel mounting frame is overturned to the other side surface until the photovoltaic panel slides down to be fixed in the groove on the other side surface, and the whole photovoltaic panel is subjected to photoelectric conversion towards the sunlight, thereby make whole process realize photovoltaic board surface cleaning to and the angle modulation of photovoltaic board, its linkage effect is excellent, carries out automatically regulated through light intensity sensor, and its degree of automation is high, need not artifical supplementary.
2. The photovoltaic panel mounting frame is also provided with the round holes and the inserting columns, so that the photovoltaic panel mounting frame and the whole V-shaped frame can be fixed, the photovoltaic panel mounting frame can be prevented from swinging under the action of strong wind, and the stability of the photovoltaic panel during mounting is effectively ensured; in addition, still set up and accomodate groove, spring and buffering strip and can play the cushioning effect to the gliding of photovoltaic board installing frame, can prevent the photovoltaic board because the damage that the impact force caused when the upset gliding, its effect is excellent.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a first angular perspective view of the present invention;
FIG. 2 is a second angular perspective view of the present invention;
FIG. 3 is a perspective view of a V-shaped plate according to the present invention;
FIG. 4 is an assembled perspective view of the photovoltaic panel fixing frame and the photovoltaic panel according to the present invention;
FIG. 5 is a plan view of the inside of the photovoltaic panel fixing frame according to the present invention;
fig. 6 is an enlarged structural view at a in fig. 3.
The device comprises a base, a support frame, a 3-V-shaped plate, a 4-photovoltaic plate fixing frame, a 5-photovoltaic plate, a 6-brush plate strip, a 7-guide wheel, a 8-storage battery, a 9-servo motor, a 10-rotating rod, a 11-rotating support, a 12-winding wheel, a 13-traction rope and a 14-light intensity sensor, wherein the base is arranged on the base;
101-driven gear, 201-vertical rod, 202-inclined rod, 301-groove, 302-V-shaped sliding groove, 303-rope guiding hole, 304-round hole, 305-inserted column, 306-accommodating groove, 307-spring, 308-buffer strip, 401-sliding shaft, 402-mounting groove, 403-strip groove, 601-sliding block, 602-brush, 603-perforation and 901-driving gear.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Example 1
Embodiment 1 introduces a self-cleaning formula multi-angle photovoltaic power generation device, includes base 1, support frame 2 and V type board 3. Wherein, support frame 2 is fixed to be set up both ends around base 1 upper surface, and V template 3 fixed connection is in the upper end of two support frames 2, and it specifically sets up to constitute by montant 201 and down tube 202 for support frame 2, and its down tube 202 sets up the left and right sides on montant 201 top, and the upper surface of down tube 202 is connected with the lower surface of V template 3. And the included angle range of the V-shaped plate 3 is set to be 90-120 degrees. Set up flutedly 301 at the upper surface of V type board 3, seted up V type spout 302 on the wall of recess 301 both sides, be provided with the fixed frame 4 of photovoltaic board in the recess 301, the middle department all is connected with the slide axle 401 of the side of the front and back of the fixed frame 4 of photovoltaic board, two slide axles 401 set up respectively in the V type spout 302 that corresponds, the fixed frame 4 of its photovoltaic board can slide and overturn through the effect of slide axle 401 with V type spout 302.
A storage battery 8 is arranged on the base 1, a servo motor 9 is arranged beside the storage battery 8, the storage battery 8 is charged through photoelectric conversion of the photovoltaic panel 5, and the servo motor 9 is powered. The output shaft of the servo motor 9 is provided with a driving gear 901, the left end and the right end of the servo motor 9 are provided with rotating rods 10, the rotating rods 10 are provided with driven gears 101 meshed with the driving gear 901, and the two rotating rods 10 rotate reversely through the meshing action of the driving gear 901 and the driven gears 101. In addition, in order to prevent dust and rainwater from corroding the two gears, the servo motor 9 and the storage battery 8, a dust-proof cover (not shown) is further provided at the storage battery 8, the servo motor 9, the driven gear 9 and the driving gear 8. Both ends are provided with rotating bracket 11 around the bull stick 10, and both ends are rotated around the bull stick 10 and are set up on rotating bracket 11, and both ends still are provided with wind-up pulley 12 around the bull stick 10, are provided with haulage rope 13 on the wind-up pulley 12, and the haulage rope preference in this embodiment 1 is the steel wire. The haulage rope 13 penetrates from the haulage hole 303 through the leading wheel 7, the end part of the haulage rope 303 is connected with the sliding block 601 through a through hole 603, a light intensity sensor 14 is arranged on the upper surface of the photovoltaic panel fixing frame 4 of the V-shaped plate 3, the light intensity sensor 14 is connected with a controller (not shown in the figure), and the signal output end of the controller is connected with the servo motor 9. When the light intensity sensor 14 sends out a signal, the servo motor 9 rotates by a certain angle, and when the light intensity sensor 14 sends out the model again, the servo motor 9 rotates by a certain angle in the reverse direction.
Example 2
A storage battery 8 is arranged on the base 1, a servo motor 9 is arranged beside the storage battery 8, the storage battery 8 is charged through photoelectric conversion of the photovoltaic panel 5, and the servo motor 9 is powered. The output shaft of the servo motor 9 is provided with a driving gear 901, the left end and the right end of the servo motor 9 are provided with rotating rods 10, the rotating rods 10 are provided with driven gears 101 meshed with the driving gear 901, and the two rotating rods 10 rotate reversely through the meshing action of the driving gear 901 and the driven gears 101. Both ends are provided with rotating bracket 11 around the bull stick 10, and both ends are rotated around the bull stick 10 and are set up on rotating bracket 11, and both ends still are provided with wind-up pulley 12 around the bull stick 10, are provided with haulage rope 13 on the wind-up pulley 12, and the haulage rope preference in this embodiment 2 is the steel wire. The haulage rope 13 penetrates from the haulage hole 303 through the leading wheel 7, the end part of the haulage rope 303 is connected with the sliding block 601 through a through hole 603, a light intensity sensor 14 is arranged on the upper surface of the photovoltaic panel fixing frame 4 of the V-shaped plate 3, the light intensity sensor 14 is connected with a controller (not shown in the figure), and the signal output end of the controller is connected with the servo motor 9. When the light intensity sensor 14 sends out a signal, the servo motor 9 rotates by a certain angle, and when the light intensity sensor 14 sends out the model again, the servo motor 9 rotates by a certain angle in the reverse direction.
In this embodiment 2, a plurality of circular holes 304 are further formed in the left and right end faces of the V-shaped plate 3, and the number of the circular holes 304 in this embodiment 2 is three, and the circular holes are spaced at the same distance. The round holes 304 are communicated with the grooves 301, the left end face and the right end face of the photovoltaic panel fixing frame 4 are provided with inserting columns 305 corresponding to the round holes 304, and when the bottom end of the groove 301 slides down on the photovoltaic panel fixing frame 4, the inserting columns 305 are inserted into the round holes 304 to fix the photovoltaic panel fixing frame. In addition, the circular hole 304 can drain accumulated water in the groove 301.
In addition, still seted up on two lower extreme inner walls of recess 301 and received groove 306, received and be connected with spring 307 in the groove 306, the outer end of spring 307 is connected with buffering strip 308, and when the fixed frame 4 of photovoltaic board overturned the gliding, its whole buffer gear can carry out good cushioning effect to it, can prevent effectively that it from damaging the photovoltaic board because of the striking.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. A self-cleaning multi-angle photovoltaic power generation device comprises a base (1), supporting frames (2) and V-shaped plates (3), and is characterized in that the supporting frames (2) are fixedly arranged at the front end and the rear end of the upper surface of the base (1), the V-shaped plates (3) are fixedly connected to the upper ends of the two supporting frames (2), grooves (301) are formed in the upper surface of the V-shaped plates (3), V-shaped sliding grooves (302) are formed in the front side wall and the rear side wall of each groove (301), photovoltaic plate fixing frames (4) are arranged in the grooves (301), sliding shafts (401) are connected to the middle of the front side surface and the rear side surface of each photovoltaic plate fixing frame (4), and the two sliding shafts (401) are respectively arranged in the corresponding V-shaped sliding grooves (302;
the upper surface of the photovoltaic plate fixing frame (4) is provided with a mounting groove (402), a photovoltaic plate (5) is arranged in the mounting groove (402), the front side wall and the rear side wall of the mounting groove (402) above the photovoltaic plate (5) are provided with strip-shaped grooves (403), the upper surface of the photovoltaic plate (5) is provided with a brush strip (6), the front end and the rear end of the brush strip (6) are connected with sliding blocks (601), the sliding blocks (601) can slide along the strip-shaped grooves (403), the lower surface of the brush strip (6) is provided with a brush (602), the left end and the right end of the strip-shaped groove (403) are both provided with through holes (603), the inner wall of the lower end of the groove (301) is provided with a rope guiding hole (303) corresponding to the through holes (603), and a guide wheel (7) is arranged on a V-;
a storage battery (8) is arranged on the base (1), a servo motor (9) is arranged beside the storage battery (8), a driving gear (901) is arranged on an output shaft of the servo motor (9), rotating rods (10) are arranged at the left end and the right end of the servo motor (9), driven gears (101) meshed with the driving gear (901) are arranged on the rotating rods (10), rotating supports (11) are arranged at the front end and the rear end of each rotating rod (10), the front end and the rear end of each rotating rod (10) are rotatably arranged on the corresponding rotating supports (11), winding wheels (12) are further arranged at the front end and the rear end of each rotating rod (10), a traction rope (13) is arranged on each winding wheel (12), the traction rope (13) penetrates through a guide wheel (7) from a rope guiding hole (303), and the end of each traction rope (303) is connected with a sliding block (601) through a through hole (603), the photovoltaic panel fixing frame is characterized in that a light intensity sensor (14) is arranged on the upper surface of a photovoltaic panel fixing frame (4) of the V-shaped plate (3), the light intensity sensor (14) is connected with a controller, and a signal output end of the controller is connected with a servo motor (9).
2. The self-cleaning multi-angle photovoltaic power generation device as claimed in claim 1, wherein a plurality of circular holes (304) are formed on the left and right end faces of the V-shaped plate (3), the circular holes (304) are communicated with the grooves (301), and inserting columns (305) corresponding to the circular holes (304) are arranged on the left and right end faces of the photovoltaic plate fixing frame (4).
3. The self-cleaning multi-angle photovoltaic power generation device as claimed in claim 1 or 2, wherein the inner walls of the two lower ends of the groove (301) are provided with accommodating grooves (306), the accommodating grooves (306) are connected with springs (307), and the outer ends of the springs (307) are connected with buffer strips (308).
4. The self-cleaning multi-angle photovoltaic power generation device according to claim 1, wherein the support frame (2) comprises a vertical rod (301) and inclined rods (302), the inclined rods (302) are arranged at the left side and the right side of the top end of the vertical rod (301), and the upper surfaces of the inclined rods (302) are connected with the lower surface of the V-shaped plate (3).
5. The self-cleaning multi-angle photovoltaic power generation device according to claim 1, wherein the included angle of the V-shaped plate (3) ranges from 90 degrees to 120 degrees.
6. The self-cleaning multi-angle photovoltaic power generation device as claimed in claim 1, wherein the pulling rope (303) is a soft steel wire.
7. The self-cleaning multi-angle photovoltaic power generation device as claimed in claim 1, wherein dust-proof covers are arranged at the storage battery (8), the servo motor (9), the driven gear (101) and the driving gear (901).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010233056.7A CN111404463A (en) | 2020-03-29 | 2020-03-29 | Self-cleaning multi-angle photovoltaic power generation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010233056.7A CN111404463A (en) | 2020-03-29 | 2020-03-29 | Self-cleaning multi-angle photovoltaic power generation device |
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| Publication Number | Publication Date |
|---|---|
| CN111404463A true CN111404463A (en) | 2020-07-10 |
Family
ID=71413680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010233056.7A Withdrawn CN111404463A (en) | 2020-03-29 | 2020-03-29 | Self-cleaning multi-angle photovoltaic power generation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111404463A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111884569A (en) * | 2020-07-12 | 2020-11-03 | 闫志伟 | A high-efficient type photovoltaic power generation device for electric power system |
| CN117978067A (en) * | 2024-03-29 | 2024-05-03 | 中国能源建设集团山西省电力勘测设计院有限公司 | Photovoltaic panel installing support of tracking sun |
-
2020
- 2020-03-29 CN CN202010233056.7A patent/CN111404463A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111884569A (en) * | 2020-07-12 | 2020-11-03 | 闫志伟 | A high-efficient type photovoltaic power generation device for electric power system |
| CN117978067A (en) * | 2024-03-29 | 2024-05-03 | 中国能源建设集团山西省电力勘测设计院有限公司 | Photovoltaic panel installing support of tracking sun |
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Application publication date: 20200710 |