Photovoltaic module adjustable test support and test method
By designing an adjustable photovoltaic module test bracket and adjusting the bracket height and angle using detection sensors and motor systems, the complexity of photovoltaic power plant components testing and cumbersome disassembly and assembly are solved, and convenient photovoltaic module performance testing is achieved.
Patent Information
- Application Number
- CN202411282391.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-13
- Publication Date
- 2024-12-20
AI Technical Summary
The photovoltaic module brackets of photovoltaic power stations are complex to be installed, and the angle cannot be adjusted. The photovoltaic modules must be perpendicular to the direct sun beam during on-site testing, and the distance between the front and rear components is limited, resulting in inconvenient maintenance, especially I-V, heat spots, hidden cracks and dust accumulation. The test requires the removal of peripheral components to be compared with physical state, and the disassembly and assembly process is cumbersome.
An adjustable test bracket including a base, a lift and a fixing frame is designed, equipped with a controller, a detection sensor and a motor. The height and angle adjustment of the lift and a fixing frame are controlled by detecting sensor information to realize adjustable testing of photovoltaic components. The bracket allows the setting of the label assembly to match the physical state of the field assembly for testing without removing the peripheral components.
It realizes that the height and angle of the test bracket are adjusted without removing the peripheral components, simplifies the performance test of I-V, heat spot, hidden cracks and other performance tests of photovoltaic modules, improves the convenience and accuracy of the test, and reduces the test during the test process. Complexity.
Smart Images
Figure CN119171838A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of photovoltaic power station field testing, and relates to an adjustable photovoltaic component test bracket and a test method suitable for photovoltaic component performance testing (IV, hidden cracks, hot spots, dust accumulation) on site of a power station. Background Art
[0002] At present, the photovoltaic module brackets of photovoltaic power stations are complicated to install, cannot be adjusted in angle and are not easy to maintain. During the on-site module IV test, the photovoltaic module must be perpendicular to the direct sunlight beam, and due to the limited spacing between the front and rear modules, it is not convenient for staff to use handheld instruments to conduct on-site hot spot and hidden crack tests on photovoltaic modules. In addition, during the power and dust accumulation tests of photovoltaic modules, the modules around the tested module must be removed to place the standard module, so that the two comparison modules are in the same physical state, that is, the module height, tilt angle and orientation are the same. This disassembly and assembly process is extremely troublesome. Summary of the invention
[0003] In view of the problems existing in the prior art, the present invention proposes an adjustable test bracket and a test method for a photovoltaic module, aiming to overcome the defect of the inconvenience of the existing photovoltaic module test.
[0004] The present invention is achieved in that:
[0005] A photovoltaic component adjustable test bracket, characterized in that it includes a base, a lifting seat and a fixed frame, the lifting seat can be lifted and lowered on the base, the fixed frame can be swingably installed on the lifting seat, the test bracket is provided with a controller, the fixed frame is provided with a detection sensor for detecting the height and tilt angle of the fixed frame, the controller receives information from the detection sensor to control the lifting seat to be lifted to a preset height, and the fixed frame is swung to a preset angle.
[0006] The lifting seat is provided with a lifting motor connected to the controller, the motor shaft of the lifting motor is provided with a threaded shaft, the base is provided with a threaded seat with internal threads, the threaded shaft cooperates with the threaded seat so that when the threaded shaft rotates, the lifting seat rises and falls relative to the base.
[0007] Lifting brackets are arranged on the four corners of the base and the lifting seat.
[0008] A swing driving assembly is provided between the lifting seat and the first end of the fixed frame, a swing guiding assembly is provided between the lifting seat and the first end of the fixed frame, a support rod is provided in the middle of the lifting seat and the fixed frame, and the fixed frame swings around the support rod.
[0009] The swing drive assembly includes a swing motor fixed on the lifting seat, a screw barrel fixed on the lifting seat, a first gear installed in the screw barrel, a second gear installed outside the screw barrel and meshing with the first gear, and a drive rod connected to the first gear in a transmission manner. The swing motor is connected to the controller, the second gear is connected to the swing motor in a transmission manner, the drive rod has a threaded portion meshing with the screw barrel, and the upper end of the drive rod is hinged to the fixed frame.
[0010] The lower end of the driving rod has a connecting portion in the shape of a polygonal column, the first gear has a polygonal column hole, and the connecting portion can be lifted and lowered to be in transmission cooperation with the polygonal column hole.
[0011] The swing guide assembly comprises a guide cylinder and a guide rod, the upper end of the guide rod is hinged on the fixed frame, and the lower end of the guide rod is movably inserted in the guide cylinder.
[0012] The detection sensor comprises a distance sensor and an angle sensor. The distance sensor is rotatably connected to the second end of the fixing frame. The base has an extension portion extending from the lifting seat. The distance sensor is located directly above the extension portion.
[0013] A photovoltaic module adjustable test method, characterized by comprising the following steps:
[0014] Fix the target plate assembly on the fixed frame;
[0015] Connect the power supply of the photovoltaic power station to the test bracket;
[0016] The preset height and angle parameters of the test are input into the controller, and the controller controls the lifting motor and the swing motor to adjust the fixed frame to the preset height and angle.
[0017] The present invention has the following beneficial effects: the test conditions required for on-site IV, hot spot, hidden crack and other photovoltaic module performance tests can be achieved by adjusting the height and angle of the test bracket during the test. In addition, when performing on-site photovoltaic module power and dust accumulation comparison tests, there is no need to remove the components around the tested component, and the standard board component can be directly fixed on the test bracket of the present invention, so that the installation angle and height are consistent with the on-site component status, making the test more convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 Schematic diagram of the test bracket structure.
[0019] Explanation of the accompanying drawings: 100, base; 110, wheels; 120, extension part; 200, lifting seat; 210, lifting motor; 211, threaded shaft; 212, threaded seat; 213, lifting bracket; 220, power module; 300, fixed frame; 310, support rod; 320, swing motor; 321, first gear; 322, second gear; 323, screw barrel; 330, driving rod; 331, connecting part; 332, threaded part; 340, turntable; 350, guide rod; 351, guide barrel; 360, distance sensor; 361, angle sensor; 370, control display module. DETAILED DESCRIPTION
[0020] The following will further describe the specific implementation of the present invention in combination with the accompanying drawings to make the technical solution of the present invention easier to understand and grasp. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0021] This embodiment provides an adjustable test bracket and a test method for photovoltaic modules. Figure 1 As shown, the test stand includes a base 100, a lifting seat 200 and a fixed frame 300. The test stand is provided with a controller. The lifting seat 200 can be lifted and lowered on the base 100. The lifting seat 200 is provided with a lifting motor 210 connected to the controller. The motor shaft of the lifting motor 210 is provided with a threaded shaft 211. The base 100 is provided with a threaded seat 212 with internal threads. The threaded shaft 211 cooperates with the threaded seat 212 so that when the threaded shaft 211 rotates, the lifting seat 200 is lifted and lowered relative to the base 100. Lifting brackets 213 are provided on the four corners of the base 100 and the lifting seat 200. The lifting brackets 213 are conducive to keeping the lifting seat 200 balanced. The lifting brackets 213 can be scissor racks.
[0022] The fixed frame 300 is swingably mounted on the lifting seat 200 , a swing driving assembly is provided between the lifting seat 200 and the first end of the fixed frame 300 , a swing guiding assembly is provided between the lifting seat 200 and the first end of the fixed frame 300 , two support rods 310 are provided in the middle of the lifting seat 200 and the fixed frame 300 , and the fixed frame 300 swings around the support rods 310 .
[0023] The swing drive assembly includes a swing motor 320 fixed on the lifting seat 200, a screw barrel 323 fixed on the lifting seat 200, a first gear 321 installed in the screw barrel, a second gear 322 installed outside the screw barrel and meshing with the first gear 321, and a driving rod 330 connected to the first gear 321. The swing motor 320 is connected to the controller, the second gear 322 is connected to the swing motor 320, the driving rod 330 has a threaded portion 332 meshing with the screw barrel, and the upper end of the driving rod 330 is hinged to the fixed frame 300. The lower end of the driving rod 330 has a connection portion 331 in the shape of a polygonal column, the first gear 321 has a polygonal column hole, and the connection portion 331 can be lifted and lowered and matched with the polygonal column hole.
[0024] The swing motor 320 rotates to drive the second gear 322 to rotate, the second gear 322 drives the first gear 321 to rotate, the first gear 321 drives the driving rod 330 to rotate, and the driving rod 330 rotates to lift relative to the screw barrel, thereby adjusting the inclination angle of the fixed frame 300. The fixed frame 300 is provided with a turntable 340, and the upper end of the driving rod 330 is hinged on the turntable 340. The turntable 340 is connected to the fixed frame 300 through a bearing, so that the driving rod 330 can rotate relative to the fixed frame 300. During the lifting process of the driving rod 330, the connecting part 331 can be lifted and lowered in the multi-prism hole. The lifting motor 210 and the swing motor 320 both use servo motors.
[0025] Furthermore, the swing guide assembly includes a guide cylinder 351 and a guide rod 350, the upper end of the guide rod 350 is hinged on the fixed frame 300, and the lower end of the guide rod 350 is movably inserted in the guide cylinder 351. This can improve the stability of the swing of the fixed frame 300.
[0026] The fixed frame 300 is provided with a detection sensor for detecting the height and tilt angle of the fixed frame 300. The controller receives information from the detection sensor to control the lifting seat 200 to be lifted to a preset height and the fixed frame 300 to swing to a preset angle. The detection sensor includes a distance sensor 360 and an angle sensor 361. The distance sensor 360 is rotatably connected to the second end of the fixed frame 300. The base 100 has an extension portion 120 extending from the lifting seat 200. The distance sensor 360 is located directly above the extension portion. The distance sensor 360 can be an infrared sensor or an ultrasonic sensor, and the angle sensor 361 can be a gyroscope. The distance sensor 360 always keeps emitting electromagnetic waves or sound waves vertically downward under the action of gravity.
[0027] The photovoltaic module adjustable test method comprises the following steps:
[0028] Step 1, connect the power supply of the photovoltaic power station to the power module 220 of the test bracket; the power module 220 may also have a battery and a voltage stabilizing module, one end of the voltage stabilizing module is connected to the string that is broken apart during the photovoltaic module performance test at the photovoltaic power station, and the other end is connected to the battery, and the electricity generated by the broken apart string is supplied to the battery after passing through the voltage stabilizing module, and the electricity of the battery is used for the operation of the entire adjustable test bracket.
[0029] Step 2: Input the preset height and angle parameters of the test into the controller, and the controller controls the lifting motor 210 and the swing motor 320 to adjust the fixing frame 300 to the preset height and angle.
[0030] Step 3: Fix the target plate assembly on the fixing frame 300 .
[0031] The photovoltaic module adjustable test bracket adjusts the fixed frame 300 to the same physical state as the photovoltaic modules installed on site in the photovoltaic power station, i.e., height from the ground, tilt angle and orientation, through the detection sensor. Then the standard board assembly is placed in the fixed frame 300 to perform a comparative test of photovoltaic module power and dust accumulation. For example, when performing IV and hot spot crack tests on photovoltaic modules, the physical state required by the tested module is input into the control display module 370, the physical state of the fixed frame 300 is controlled by the controller, and then the tested module is placed in the fixed frame 300 to carry out relevant performance tests.
[0032] The control display module 370 is installed on the side of the fixed frame 300, and is used to display the physical state measured by the detection sensor, and is also used to directly input the physical state required by the component to be tested, and the feedback controller is used to adjust the physical state of the fixed frame 300. The upper part of the base 100 can be used to place the portable test equipment, and four rolling wheels 110 are provided under the base 100.
Claims
1. A photovoltaic module adjustable test bracket, characterized in that: The test support comprises a base (100), a lifting seat (200) and a fixed frame (300); the lifting seat (200) is mounted on the base (100) in a liftable manner; the fixed frame (300) is mounted on the lifting seat (200) in a swingable manner; a controller is provided on the test support; a detection sensor is provided on the fixed frame (300) for detecting the height and tilt angle of the fixed frame (300); the controller receives information from the detection sensor to control the lifting seat (200) to be lifted to a preset height and the fixed frame (300) to be swingable to a preset angle.
2. The adjustable photovoltaic module test bracket according to claim 1, characterized in that: The lifting seat (200) is provided with a lifting motor (210) connected to the controller, the motor shaft of the lifting motor (210) is provided with a threaded shaft (211), and the base (100) is provided with a threaded seat (212) with internal threads, and the threaded shaft (211) cooperates with the threaded seat (212) so that when the threaded shaft (211) rotates, the lifting seat (200) is lifted and lowered relative to the base (100).
3. The adjustable photovoltaic module test bracket according to claim 2, characterized in that: Lifting brackets (213) are provided on the four corners of the base (100) and the lifting seat (200).
4. The adjustable photovoltaic module test bracket according to claim 1, characterized in that: A swing driving assembly is provided between the lifting seat (200) and the first end of the fixed frame (300), a swing guiding assembly is provided between the lifting seat (200) and the first end of the fixed frame (300), a support rod (310) is provided in the middle of the lifting seat (200) and the fixed frame (300), and the fixed frame (300) swings around the support rod (310).
5. The photovoltaic module adjustable test bracket according to claim 4, characterized in that: The swing drive assembly comprises a swing motor (320) fixed on the lifting seat (200), a screw barrel fixed on the lifting seat (200), a first gear (321) installed in the screw barrel, a second gear (322) installed outside the screw barrel and meshing with the first gear (321), and a driving rod (330) drivingly connected to the first gear (321), the swing motor (320) is connected to the controller, the second gear (322) is drivingly connected to the swing motor (320), the driving rod (330) has a threaded portion (332) meshing with the screw barrel, and the upper end of the driving rod (330) is hinged to the fixed frame (300).
6. The adjustable photovoltaic module test stand according to claim 5, characterized in that: The lower end of the driving rod (330) has a connecting portion (331) in the shape of a polygonal column, the first gear (321) has a polygonal column hole, and the connecting portion (331) can be lifted and lowered to drive and cooperate with the polygonal column hole.
7. The photovoltaic module adjustable test bracket according to claim 4, characterized in that: The swing guide assembly comprises a guide cylinder (351) and a guide rod (350), the upper end of the guide rod (350) is hinged on the fixed frame (300), and the lower end of the guide rod (350) is movably inserted in the guide cylinder (351).
8. The photovoltaic module adjustable test bracket according to claim 1, characterized in that: The detection sensor comprises a distance sensor (360) and an angle sensor (361); the distance sensor (360) is rotatably connected to the second end of the fixed frame (300); the base (100) has an extension portion extending from the lifting seat (200); and the distance sensor (360) is located directly above the extension portion.
9. A photovoltaic module adjustable test method, characterized in that: The following steps are involved: Fixing the target plate assembly on the fixing frame (300); Connect the power supply of the photovoltaic power station to the test bracket; The preset height and angle parameters of the test are input into the controller, and the controller controls the lifting motor (210) and the swing motor (320) to adjust the fixing frame (300) to the preset height and angle.