CN109443934B - Mechanical load test device for photovoltaic module and use method of mechanical load test device - Google Patents
Mechanical load test device for photovoltaic module and use method of mechanical load test device Download PDFInfo
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- CN109443934B CN109443934B CN201811227013.7A CN201811227013A CN109443934B CN 109443934 B CN109443934 B CN 109443934B CN 201811227013 A CN201811227013 A CN 201811227013A CN 109443934 B CN109443934 B CN 109443934B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
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- G01N2203/0044—Pneumatic means
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Abstract
The invention discloses a mechanical load test device for a photovoltaic assembly and a using method of the mechanical load test device. This photovoltaic module mechanical load test device when carrying out mechanical load test in the face of the photovoltaic module of different specifications of different batches, can be fast effectual fixes photovoltaic module, has practiced thrift the time and the energy of adjusting, improves test efficiency, can satisfy large batch photovoltaic module mechanical load test and use.
Description
Technical Field
The invention relates to the technical field of photovoltaic modules, in particular to a mechanical load test device for a photovoltaic module.
Background
The photovoltaic module is also called as a solar panel, is a core part in a solar power generation system and is also the most important part in the solar power generation system, has the function of converting solar energy into electric energy, and the electric energy is sent to a storage battery to be stored or to push a load to work, meanwhile, the photovoltaic module is continuously innovated, and further upgrading and innovation products of the photovoltaic module, such as photovoltaic ceramic tiles and photovoltaic color steel tiles, can directly replace traditional building material tiles, also has the function of the photovoltaic module, and can cause certain impact on the photovoltaic module and the traditional building materials once the photovoltaic module is put into the general market.
Before the photovoltaic module is manufactured and put into use, certain performance test needs to be carried out on mechanical load of the photovoltaic module, the photovoltaic module needs to be fixed firstly during testing, the traditional photovoltaic module mechanical load testing device is often difficult to adjust and fix quickly according to the size of the photovoltaic module, therefore, when the mechanical load test is carried out on photovoltaic modules facing different batches of different specifications, a certain time needs to be consumed for debugging and adjusting the testing device, a large amount of time and energy are wasted, the testing efficiency is reduced, and the mechanical load test of large batches of photovoltaic modules is difficult to meet.
Publication number CN2018103099799 discloses a mechanical load testing device for a photovoltaic module, which comprises a fixed bracket and a photovoltaic module, wherein a slide rail is arranged inside the fixed bracket, the photovoltaic module is installed between four fixed brackets which are symmetrical to each other in pairs, photovoltaic module sliding blocks which are symmetrical to each other are arranged at two ends of the photovoltaic module, sensors which are symmetrical to each other are arranged at two sides of each photovoltaic module sliding block, and by installing the sliding blocks and the slide rail, the casting die (sand bag) can be uniformly placed between the pressure platform and the photovoltaic module, the test process is convenient, can carry out dynamic and static measurement on the photovoltaic assembly, leads the measurement to be more efficient and quicker, can also carry out simultaneous test on a plurality of photovoltaic assemblies, but this photovoltaic module mechanical load testing arrangement can't carry out effectual regulation to photovoltaic module's fixed, can't adapt to various size photovoltaic module's fixed, is difficult to satisfy big photovoltaic module's in batches mechanical load test.
Disclosure of Invention
The invention aims to provide a photovoltaic module mechanical load testing device which has the advantage of being capable of being adjusted and fixed quickly according to the size of a photovoltaic module and solves the problem that the traditional photovoltaic module mechanical load testing device is difficult to adjust and fix quickly according to the size of the photovoltaic module.
In order to achieve the purpose, the invention provides the following technical scheme: a mechanical load test device for a photovoltaic assembly comprises a base, wherein a supporting vertical rod is fixedly connected to the middle point of the rear side of the top of the base, a supporting top plate is fixedly connected to the top end of the supporting vertical rod, a pressing pad is fixedly connected to the bottom of the supporting top plate through a driving device, first adjusting grooves are symmetrically formed in the left side and the right side of the top of the base, a pressure sensing device is fixedly connected to the position, located between the two first adjusting grooves, of the top of the base, a supporting plate is arranged inside the first adjusting grooves, two limiting rods are fixedly connected to the left side of the inner wall of the first adjusting grooves, the right ends of the limiting rods penetrate through the supporting plate and extend to the outside of the supporting plate to be fixedly connected with the right side of the inner wall of the first adjusting grooves, a pushing cylinder is fixedly connected to the inner wall of one side, away from the pressure sensing device, of one side, close to the supporting plate, of the pushing cylinder is fixedly connected with the supporting plate, the top of the supporting plate penetrates through the first adjusting groove and extends to the outside fixedly connected with side connecting block, one side of the side connecting block, which is close to the pressure sensing device, is provided with two second adjusting grooves, the front side and the back side of the side connecting block are fixedly connected with driving motors, the output shaft of the driving motor is fixedly connected with a driving rotating shaft, one end of the driving rotating shaft, which is close to the side connecting block, penetrates through the side connecting block and extends to the inside fixedly connected with threaded rod of the second adjusting groove, the surface of the threaded rod is provided with a moving block, one side of the moving block, which is close to the pressure sensing device, penetrates through the second adjusting groove and extends to the outside of the second adjusting groove, one side of the moving block, which is close to the pressure sensing device, is provided with a placing groove, the inner wall of the placing groove is fixedly connected with a protective pad, the top of the moving block is provided with a fixing bolt corresponding to the placing groove, and the bottom of the fixing bolt sequentially penetrates through the moving block, The protection pad and the standing groove just extend to the inside fixedly connected with rubber briquetting of standing groove, fixing bolt's top fixedly connected with rotary disk, the top fixedly connected with handle of rotary disk.
Preferably, the bottom of the moving block is provided with a ball, and the surface of the ball is in contact with the bottom of the inner wall of the second adjusting groove.
Preferably, one side of the moving block, which is far away from the pressure sensing device, is fixedly connected with a limiting block, and a limiting groove matched with the side connecting block is formed in a position, corresponding to the limiting block, of the side connecting block.
Preferably, the surface of the handle is sleeved with a soft pad, and the surface of the soft pad is provided with anti-skid grains.
Preferably, the front side and the rear side of the side connecting block correspond to the position fixedly connected with protective housing of the driving motor, and heat dissipation holes are formed in the surface of the protective housing.
Preferably, the surface of the threaded rod is provided with an external thread, and the position of the moving block corresponding to the threaded rod is provided with an internal thread matched with the external thread for use.
The invention also provides a using method of the photovoltaic module mechanical load testing device, which comprises the following steps:
s1, starting a pushing cylinder according to the length of a photovoltaic module to be tested, pushing a supporting plate in a first adjusting groove by the pushing cylinder, and limiting by using a limiting rod, so that the distance between a left group of placing grooves and a right group of placing grooves meets the length of the photovoltaic module;
s2, according to the width of the photovoltaic module, a driving motor is started, a rotating shaft is driven to drive a threaded rod to rotate, and a moving block which is in threaded connection with the threaded rod moves back and forth in a second adjusting groove, so that the distance between a front group of placing grooves and a rear group of placing grooves meets the width of the photovoltaic module;
s3, placing the photovoltaic module in the four placing grooves, and adjusting the pushing cylinder and the driving motor according to the actual length and width of the photovoltaic module to enable four corners of the photovoltaic module to be completely placed in the placing grooves;
s4, rotating the handle, wherein under the connecting action of the rotating disc, the fixing bolt drives the rubber pressing block to rotate, and the top of the photovoltaic module is pressed and fixed;
and S5, starting the driving device to drive the pressing pad to move downwards, applying pressure to the photovoltaic assembly, and testing the mechanical load by using the pressure sensing device.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the mechanical load test device for the photovoltaic module, the first adjusting groove, the supporting plate, the limiting rod, the pushing cylinder, the side connecting block, the second adjusting groove, the driving motor, the threaded rod, the moving block, the fixing bolt and the rubber pressing block are arranged, so that the problem that the traditional mechanical load test device for the photovoltaic module is difficult to adjust and fix quickly according to the size of the photovoltaic module is solved.
2. According to the invention, through arranging the balls, the friction force of the moving block in the second adjusting groove is reduced, the moving block can move rapidly in the second adjusting groove, the movement track of the moving block is limited through arranging the limiting block and the limiting groove, the moving block can only move in the front-back direction in the second adjusting groove under the threaded connection action of the threaded rod, the comfort level of a user in rotating the handle is improved through arranging the soft cushion and the anti-slip patterns, the anti-slip patterns play a role in preventing the handle from falling off, through arranging the protective shell and the heat dissipation holes, the driving motor is effectively protected, the driving motor is prevented from being damaged due to long-time dust entering, the service life of the driving motor is prolonged, and the heat dissipation effect of the driving motor is improved through the heat dissipation holes.
Drawings
FIG. 1 is a structural cross-sectional view of a front view of the present invention;
FIG. 2 is an enlarged view of a portion of A-A of FIG. 1 in accordance with the present invention;
fig. 3 is a structural cross-sectional view of a side view of the present invention.
In the figure: the base 1, 2 support the pole setting, 3 support the roof, 4 drive arrangement, 5 press the pad, 6 first adjustment tank, 7 pressure-sensitive device, 8 backup pads, 9 gag lever post, 10 push cylinder, 11 side connecting blocks, 12 second adjustment tanks, 13 driving motor, 14 drive pivot, 15 threaded rods, 16 movable blocks, 17 standing grooves, 18 protection pads, 19 fixing bolt, 20 rubber briquetting, 21 rotary disk, 22 handles, 23 ball, 24 stopper, 25 spacing grooves, 26 cushion, 27 anti-skidding line, 28 protective housing, 29 louvre.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
Referring to fig. 1-3, a mechanical load testing device for a photovoltaic module comprises a base 1, a supporting upright rod 2 is fixedly connected to the middle point of the rear side of the top of the base 1, a supporting top plate 3 is fixedly connected to the top end of the supporting upright rod 2, a pressing pad 5 is fixedly connected to the bottom of the supporting top plate 3 through a driving device 4, first adjusting grooves 6 are symmetrically arranged on the left and right sides of the top of the base 1, a pressure sensing device 7 is fixedly connected to the top of the base 1 and between the two first adjusting grooves 6, a supporting plate 8 is arranged inside the first adjusting grooves 6, two limiting rods 9 are fixedly connected to the left side of the inner wall of the first adjusting grooves 6, the right ends of the limiting rods 9 penetrate through the supporting plate 8 and extend to the outside to be fixedly connected with the right side of the inner wall of the first adjusting grooves 6, a pushing cylinder 10 is fixedly connected to the inner wall of the first adjusting grooves 6 far away from the pressure sensing device 7, one side of the pushing cylinder 10 close to the support plate 8 is fixedly connected with the support plate 8, the top of the support plate 8 penetrates through the first adjusting groove 6 and extends to the outside of the first adjusting groove and is fixedly connected with a side connecting block 11, one side of the side connecting block 11 close to the pressure sensing device 7 is provided with two second adjusting grooves 12, the front side and the rear side of the side connecting block 11 are both fixedly connected with driving motors 13, the front side and the rear side of the side connecting block 11 and the positions corresponding to the driving motors 13 are fixedly connected with a protective shell 28, the surface of the protective shell 28 is provided with a heat dissipation hole 29, an output shaft of the driving motor 13 is fixedly connected with a driving rotating shaft 14, one end of the driving rotating shaft 14 close to the side connecting block 11 penetrates through the side connecting block 11 and extends to the inner part of the second adjusting groove 12 and is fixedly connected with a threaded rod 15, the surface of the threaded rod 15 is provided with a moving block 16, the surface of the threaded rod 15 is provided with external threads, and the position of the moving block 16 corresponding to the threaded rod 15 is provided with internal threads matched with the external threads, the bottom of the moving block 16 is provided with a ball 23, the surface of the ball 23 is contacted with the bottom of the inner wall of the second adjusting groove 12, one side of the moving block 16 away from the pressure sensing device 7 is fixedly connected with a limit block 24, the position of the side connecting block 11 corresponding to the limit block 24 is provided with a limit groove 25 matched with the limit block, one side of the moving block 16 close to the pressure sensing device 7 penetrates through the second adjusting groove 12 and extends to the outside of the second adjusting groove, one side of the moving block 16 close to the pressure sensing device 7 is provided with a placing groove 17, the inner wall of the placing groove 17 is fixedly connected with a protection pad 18, the top of the moving block 16 is provided with a fixing bolt 19 corresponding to the placing groove 17, the bottom end of the fixing bolt 19 sequentially penetrates through the moving block 16, the protection pad 18 and the placing groove 17 from top to bottom and extends to the inside of the placing groove 17 and is fixedly connected with a rubber press block 20, and the top end of the fixing bolt 19 is fixedly connected with a rotating disk 21, the top of the rotating disk 21 is fixedly connected with a handle 22, a soft cushion 26 is sleeved on the surface of the handle 22, anti-slip threads 27 are arranged on the surface of the soft cushion 26, through arranging balls 23, the friction force generated when the moving block 16 moves in the second adjusting groove 12 is reduced, the moving block 16 can move quickly in the second adjusting groove 12, through arranging a limiting block 24 and a limiting groove 25, the movement track of the moving block 16 is limited, the moving block 16 can only move in the front-back direction in the second adjusting groove 12 under the threaded connection effect of the threaded rod 15, through arranging the soft cushion 26 and the anti-slip threads 27, the comfort level of a user when the handle 22 is rotated is improved, the anti-slip threads 27 play a role of preventing falling off the hand, through arranging a protective shell 28 and a heat dissipation hole 29, the driving motor 13 is effectively protected, the driving motor 13 is prevented from being damaged due to dust entering for a long time, and the service life of the driving motor is prevented from being influenced, louvre 29 has improved the radiating effect to driving motor 13, through setting up first adjustment tank 6, backup pad 8, gag lever post 9, push cylinder 10, side connecting block 11, second adjustment tank 12, driving motor 13, threaded rod 15, movable block 16, fixing bolt 19 and rubber briquetting 20, the problem of traditional photovoltaic module mechanical load test device often is difficult to quick adjust fixedly according to the photovoltaic module size has been solved, this photovoltaic module mechanical load test device, when carrying out mechanical load test in the face of the photovoltaic module of different specifications of different batches, can fix photovoltaic module fast effectually, the time and the energy of having practiced thrift a large amount of regulations have been improved, the efficiency of the test is improved, can satisfy the experimental use of large batch photovoltaic module mechanical load.
The use method of the mechanical load test device for the photovoltaic module is characterized by comprising the following steps:
s1, according to the length of a photovoltaic module to be tested, a pushing cylinder 10 is started, the pushing cylinder 10 pushes a support plate 8 in a first adjusting groove 6, and a limiting rod 9 is utilized to play a limiting role, so that the distance between a left group of placing grooves 17 and a right group of placing grooves 17 meets the length of the photovoltaic module;
s2, according to the width of the photovoltaic module, a driving motor 13 is started, a rotating shaft 14 is driven to drive a threaded rod 15 to rotate, and a moving block 16 which is in threaded connection with the threaded rod 15 moves back and forth in a second adjusting groove 12, so that the distance between a front group of placing grooves 17 and a rear group of placing grooves 17 meets the width of the photovoltaic module;
s3, placing the photovoltaic module in the four placing grooves 17, and adjusting the pushing cylinder 10 and the driving motor 13 according to the actual length and width of the photovoltaic module to enable four corners of the photovoltaic module to be completely placed in the placing grooves 17;
s4, rotating the handle 22, and under the connection effect of the rotating disc 21, driving the rubber pressing block 20 to rotate by the fixing bolt 19, so that the top of the photovoltaic module is pressed and fixed;
and S5, starting the driving device 4 to drive the pressing pad 5 to move downwards, applying pressure to the photovoltaic assembly, and testing the mechanical load by using the pressure sensing device 7.
According to the length of a photovoltaic module to be tested, the pushing cylinder 10 is started, the supporting plate 8 is pushed in the first adjusting groove 6 by the pushing cylinder 10, the limiting rod 9 is utilized to play a limiting role, then the driving motor 13 is started according to the width of the photovoltaic module, the driving rotating shaft 14 drives the threaded rod 15 to rotate, the moving block 16 which is in threaded connection with the threaded rod 15 moves back and forth in the second adjusting groove 12, four corners of the photovoltaic module are placed in the four placing grooves 17, finally, the fixing bolt 19 drives the rubber pressing block 20 to rotate under the connection effect of the rotating disk 21 through the rotating handle 22, the top of the photovoltaic module is pressed and fixed, the driving device 4 drives the pressing pad 5 to move downwards, pressure is applied to the photovoltaic module, and the pressure sensing device 7 is utilized to test mechanical load.
In summary, the following steps: this photovoltaic module mechanical load test device through setting up first adjustment tank 6, backup pad 8, gag lever post 9, promotion cylinder 10, side connection piece 11, second adjustment tank 12, driving motor 13, threaded rod 15, movable block 16, fixing bolt 19 and rubber briquetting 20, has solved traditional photovoltaic module mechanical load test device and has often been difficult to quick adjust fixed problem according to the photovoltaic module size.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a photovoltaic module mechanical load test device, includes base (1), its characterized in that: fixedly connected with support pole setting (2) are located to the mid point of base (1) top rear side, the top fixedly connected with of support pole setting (2) supports roof (3), drive arrangement (4) fixedly connected with is passed through to the bottom of supporting roof (3) and presses pad (5), first adjustment tank (6) have been seted up to the left and right sides symmetry at base (1) top, base (1) top just is located position fixedly connected with forced induction device (7) between two first adjustment tank (6), the inside of first adjustment tank (6) is provided with backup pad (8), two gag lever posts (9) of left side fixedly connected with of first adjustment tank (6) inner wall, the right-hand member of gag lever post (9) runs through backup pad (8) and extends to the right side fixed connection of its outside and first adjustment tank (6) inner wall, fixedly connected with promotes cylinder on the inner wall of forced induction device (7) one side is kept away from in first adjustment tank (6), and promotes the inner wall fixedly connected with promotes cylinder (10) One side, close to the supporting plate (8), of the pushing cylinder (10) is fixedly connected with the supporting plate (8), the top of the supporting plate (8) penetrates through the first adjusting groove (6) and extends to the outer portion of the supporting plate to be fixedly connected with a side connecting block (11), one side, close to the pressure sensing device (7), of the side connecting block (11) is provided with two second adjusting grooves (12), the front side and the rear side of the side connecting block (11) are fixedly connected with driving motors (13), an output shaft of each driving motor (13) is fixedly connected with a driving rotating shaft (14), one end, close to the side connecting block (11), of each driving rotating shaft (14) penetrates through the side connecting block (11) and extends to the inner portion of the second adjusting groove (12) to be fixedly connected with a threaded rod (15), the surface of each threaded rod (15) is provided with a moving block (16), one side, close to the pressure sensing device (7), of each moving block (16) penetrates through the second adjusting groove (12) and extends to the outer portion of the moving block, a placing groove (17) is formed in one side, close to the pressure sensing device (7), of the moving block (16), a protection pad (18) is fixedly connected to the inner wall of the placing groove (17), a fixing bolt (19) is arranged at the top of the moving block (16) and corresponds to the placing groove (17), the bottom end of the fixing bolt (19) sequentially penetrates through the moving block (16), the protection pad (18) and the placing groove (17) from top to bottom, a rubber pressing block (20) is fixedly connected to the inside of the placing groove (17) in an extending mode, a rotating disc (21) is fixedly connected to the top end of the fixing bolt (19), and a handle (22) is fixedly connected to the top of the rotating disc (21);
the bottom of the moving block (16) is provided with a ball (23), and the surface of the ball (23) is in contact with the bottom of the inner wall of the second adjusting groove (12).
2. The mechanical load test device for the photovoltaic module according to claim 1, wherein: one side of the moving block (16) far away from the pressure sensing device (7) is fixedly connected with a limiting block (24), and a limiting groove (25) matched with the limiting block (24) is formed in the position, corresponding to the limiting block (24), of the side connecting block (11).
3. The mechanical load test device for the photovoltaic module according to claim 1, wherein: the surface of the handle (22) is sleeved with a soft pad (26), and anti-skid grains (27) are arranged on the surface of the soft pad (26).
4. The mechanical load test device for the photovoltaic module according to claim 1, wherein: both sides just correspond position fixedly connected with protective housing (28) of driving motor (13) around side connecting block (11), louvre (29) have been seted up on the surface of protective housing (28).
5. The mechanical load test device for the photovoltaic module according to claim 1, wherein: the surface of the threaded rod (15) is provided with external threads, and the position of the moving block (16) corresponding to the threaded rod (15) is provided with internal threads matched with the external threads for use.
6. The use method of the mechanical load test device for the photovoltaic module, according to claim 1, is characterized by comprising the following steps:
s1, according to the length of a photovoltaic module to be tested, a pushing cylinder (10) is started, the pushing cylinder (10) pushes a support plate (8) in a first adjusting groove (6), and a limiting rod (9) is utilized to play a limiting role, so that the distance between a left group of placing grooves (17) and a right group of placing grooves (17) meets the length of the photovoltaic module;
s2, according to the width of the photovoltaic module, a driving motor (13) is started, a rotating shaft (14) is driven to drive a threaded rod (15) to rotate, and a moving block (16) in threaded connection with the threaded rod (15) moves back and forth in a second adjusting groove (12), so that the distance between a front group of placing grooves and a rear group of placing grooves (17) meets the width of the photovoltaic module;
s3, placing the photovoltaic module in the four placing grooves (17), and adjusting the pushing cylinder (10) and the driving motor (13) according to the actual length and width of the photovoltaic module to enable four corners of the photovoltaic module to be completely placed in the placing grooves (17);
s4, rotating a handle (22), wherein under the connecting action of a rotating disc (21), a fixing bolt (19) drives a rubber pressing block (20) to rotate, and the top of the photovoltaic module is pressed and fixed;
and S5, starting the driving device (4) to drive the pressing pad (5) to move downwards, applying pressure to the photovoltaic assembly, and testing the mechanical load by using the pressure sensing device (7).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811227013.7A CN109443934B (en) | 2018-10-22 | 2018-10-22 | Mechanical load test device for photovoltaic module and use method of mechanical load test device |
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| CN201811227013.7A CN109443934B (en) | 2018-10-22 | 2018-10-22 | Mechanical load test device for photovoltaic module and use method of mechanical load test device |
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| CN109443934B true CN109443934B (en) | 2022-06-17 |
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| CN113432991A (en) * | 2021-05-27 | 2021-09-24 | 中铁十九局集团轨道交通工程有限公司 | Device and method for researching and testing stress characteristic of steel jacking pipe in complex environment |
| CN113237738B (en) * | 2021-07-09 | 2021-09-21 | 成都辰迈科技有限公司 | Safety performance detection device and detection method for toughened glass production |
| CN117118356B (en) * | 2023-10-23 | 2024-03-08 | 启东市乃天光伏有限公司 | Testing device for distributed roof photovoltaic module |
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| CN107807050A (en) * | 2017-10-26 | 2018-03-16 | 湖州丽瀑能源工程技术有限公司 | A kind of photovoltaic panel load test device |
| CN207540895U (en) * | 2017-10-26 | 2018-06-26 | 湖州丽瀑能源工程技术有限公司 | A kind of photovoltaic panel load test device |
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