CN116388692A - Photovoltaic module IAM test method and test system - Google Patents
Photovoltaic module IAM test method and test system Download PDFInfo
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- CN116388692A CN116388692A CN202310669462.1A CN202310669462A CN116388692A CN 116388692 A CN116388692 A CN 116388692A CN 202310669462 A CN202310669462 A CN 202310669462A CN 116388692 A CN116388692 A CN 116388692A
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- 238000012360 testing method Methods 0.000 title claims abstract description 44
- 238000010998 test method Methods 0.000 title abstract description 7
- 238000001514 detection method Methods 0.000 claims abstract description 98
- 230000005484 gravity Effects 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims description 13
- 238000005498 polishing Methods 0.000 claims description 3
- 238000012937 correction Methods 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims 2
- 238000010248 power generation Methods 0.000 abstract description 3
- 239000003638 chemical reducing agent Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 238000013016 damping Methods 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 239000011521 glass Substances 0.000 description 1
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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
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
- H02S50/10—Testing of PV devices, e.g. of PV modules or single PV cells
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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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Abstract
The invention relates to the technical field of photovoltaic power generation, in particular to a photovoltaic module IAM test method and test system, comprising the following steps: setting the zero-degree position of the photovoltaic module to be in a vertical state, and vertically arranging the detection lamp on the side surface of the photovoltaic module; the rotating shaft of the detection turntable is eccentrically arranged, so that the detection turntable can rotate to a vertical state under the action of gravity; installing the photovoltaic module on a detection turntable, and calibrating zero of the photovoltaic module by gravity before detection; driving the detection turntable to rotate to one side, and testing IAM loss; resetting the detection turntable and resetting the detection turntable; driving the detection turntable to rotate to the other side, and testing IAM loss in the other direction; resetting the detection turntable to finish detection. According to the invention, the zero-degree position of the photovoltaic module is replaced to be in a vertical state, and the rotating shaft is eccentrically arranged, so that the detection turntable can rotate to be in the vertical state under the action of gravity, and the accuracy of an IAM test result of the photovoltaic module is ensured.
Description
Technical Field
The invention relates to the technical field of photovoltaic power generation, in particular to a photovoltaic module IAM test method and test system.
Background
Solar energy is used as a low-carbon renewable energy source, and is vigorously developed worldwide, and the installation amount of each country is increased year by year. The photovoltaic module receives solar energy through the installation photovoltaic module to convert solar energy into direct current, and then converts the direct current into alternating current through the photovoltaic inverter. The generated energy of the photovoltaic module directly influences the income of the photovoltaic power station owner, and company and institutions in the industry are all conducting research work for improving the energy conversion rate.
Light can reach the surface of the battery piece after entering the glass and the packaging material from the air, and the light enters the light-tight medium from the light-sparse medium in the process and can be simultaneously refracted and reflected. The transmittance and reflectance of light vary with the variation of the incident angle, and when the incident angle is 0, the transmittance of light is the maximum and the reflectance is the minimum; as the incident angle increases, the transmittance of light decreases and the reflectance increases. The loss of radiation due to this phenomenon is referred to as the loss of incident angle, also known as IAM (Incidence Angle Modifier) loss. Therefore, the photovoltaic module needs to perform an IAM test under different incident angles in advance to evaluate the power generation efficiency of the photovoltaic module.
When the traditional photovoltaic module detects the turntable at the position of 0 degree, the turntable is allowed to stay at the horizontal position, but the actual turntable is difficult to accurately stay at the horizontal position, and the turntable is easy to rotate in the process of installing the photovoltaic module, so that the angle is deviated. For IAM testing of photovoltaic modules, such errors are unacceptable and need to be eliminated.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention provides a photovoltaic module IAM test method and a test system, thereby effectively solving the problems in the background technology.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: a photovoltaic module IAM test method comprises the following steps:
setting the zero-degree position of the photovoltaic module to be in a vertical state, and vertically arranging the detection lamp on the side surface of the photovoltaic module;
the rotating shaft of the detection turntable is eccentrically arranged, so that the detection turntable can rotate to a vertical state under the action of gravity;
installing the photovoltaic module on the detection turntable, and calibrating zero of the photovoltaic module by gravity before detection;
driving the detection turntable to rotate to one side of the detection turntable, and testing IAM loss in the direction;
resetting the detection turntable and resetting the detection turntable;
driving the detection turntable to rotate to the other side, and testing IAM loss in the other direction;
resetting the detection turntable to finish detection.
Further, the rotation shaft is arranged at the thickness center of the photovoltaic module, and the rotation axis of the rotation shaft is positioned right above the gravity center of the photovoltaic module.
Further, the zeroing of the photovoltaic module by gravity before detection comprises:
the linkage between the rotation drive and the rotation shaft is disconnected, so that the rotation of the rotation shaft is not limited by the rotation drive;
rotating the detection turntable and the photovoltaic module to a vertical state under the action of gravity;
the rotational drive reestablishes the linkage with the rotational shaft.
Further, the rotating detection turntable and the photovoltaic module rotate to a vertical state under the action of gravity, and the rotating shaft is provided with a rotation damper, wherein the rotation damper is used for reducing swinging when rotating to the vertical state.
Further, the disconnection linkage between the rotation drive and the rotation shaft includes: a clutch is arranged between the rotary drive and the rotary shaft, and when the clutch is separated, the rotary drive and the rotary shaft are disconnected;
the clutch engages and the rotational drive reestablishes the linkage with the rotational shaft.
Further, each time the zero-correction rotational drive is decoupled from the rotational shaft, the rotational drive is rotated in a direction to be tested by a set threshold value.
Further, when IAM loss is tested, the detection turntable is driven to rotate from vertical to horizontal, and when the detection turntable rotates for a set angle, rotation is stopped, and IAM loss under the angle is tested.
A photovoltaic module IAM test system, using the method as described above, comprising:
the support is arranged on the working plane;
the detection turntable is arranged on the support and comprises a rotating shaft, the detection turntable rotates by taking the horizontal direction as the rotating shaft center through the rotating shaft, and the photovoltaic module is arranged on the detection turntable;
the rotary driving assembly is arranged on the support and used for driving the detection turntable to rotate;
the detection lamp is vertically arranged on one side of the detection turntable and used for polishing the photovoltaic panel;
the rotary shaft of the detection rotary table is eccentrically arranged, so that the detection rotary table can rotate to a vertical state under the action of gravity.
Further, a clutch is arranged between the rotary driving assembly and the rotary shaft, and the clutch is used for controlling linkage on-off between the rotary driving assembly and the rotary shaft.
Further, a rotary damper is arranged at the other end of the rotary shaft and used for reducing swinging of the detection rotary table which can rotate to a vertical state under the action of gravity.
Further, the rotary driving assembly comprises a servo motor and a speed reducer, wherein the servo motor is in transmission connection with the speed reducer, and the speed reducer is in transmission connection with the clutch.
The beneficial effects of the invention are as follows: according to the invention, the zero-degree position of the photovoltaic module is changed from a horizontal state to a vertical state, and the rotating shaft of the detection turntable is eccentrically arranged, so that under the condition that the detection turntable is not driven, the detection turntable automatically rotates to the vertical state under the action of gravity due to the eccentricity of the rotating shaft, the zero-degree position of the photovoltaic module can be prevented from deviation, and the photovoltaic module is calibrated before each rotation test, so that the accuracy of an IAM test result of the photovoltaic module is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a flow chart of the method of the present invention;
FIG. 2 is a schematic diagram of the center of gravity and the axis of rotation of a photovoltaic module;
FIG. 3 is a schematic view of a photovoltaic module automatically rotated to a vertical state under the force of gravity;
fig. 4 is a schematic structural diagram of the test system.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
In the description of the present invention, it should be noted that the directions or positional relationships indicated as being "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are directions or positional relationships based on the drawings are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, or may be internal communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 to 3: a photovoltaic module IAM test method comprises the following steps:
setting the zero-degree position of the photovoltaic module 7 to be in a vertical state, and vertically arranging the detection lamp 4 on the side surface of the photovoltaic module 7;
the rotating shaft 21 of the detection turntable 2 is eccentrically arranged, so that the detection turntable 2 can rotate to a vertical state under the action of gravity;
the photovoltaic module 7 is arranged on the detection turntable 2, and zero calibration is carried out on the photovoltaic module 7 by gravity before detection;
driving the detection turntable 2 to rotate to one side, and testing IAM loss in the direction;
resetting the detection turntable 2 and resetting;
driving the detection turntable 2 to rotate to the other side, and testing IAM loss in the other direction;
resetting the detection turntable 2 to finish detection.
Through changing the zero degree position of photovoltaic module 7 from the horizontal state to vertical state to through setting up the rotation axis 21 eccentric of detecting revolving stage 2, thereby under the condition that detecting revolving stage 2 is not driven, because the eccentric of rotation axis 21, detect revolving stage 2 can be under the effect of gravity automatic rotation to vertical state, thereby can guarantee that the zero degree position of photovoltaic module 7 can not appear the deviation, and before carrying out the rotation test at every turn, all carry out the school zero to photovoltaic module 7, guarantee the accuracy of the IAM test's of photovoltaic module 7 result.
As shown in fig. 2 and 3, in the present embodiment, the rotation shaft 21 is provided at the thickness center of the photovoltaic module 7, and the rotation shaft 21 center of the rotation shaft 21 is located directly above the center of gravity of the photovoltaic module 7.
In order to ensure that the photovoltaic module 7 can automatically rotate to a vertical state under the eccentric action, the rotating shaft 21 is arranged at the thickness center of the photovoltaic module 7, the axle center of the rotating shaft 21 is positioned right above the gravity center of the photovoltaic module 7, and when the photovoltaic module 7 is not in the vertical state, the gravity center of the photovoltaic module 7 and the rotating shaft 21 are not on the same vertical plane, so that the photovoltaic module 7 can rotate under the action of gravity until reaching the zero-degree position in the vertical state.
Because the detection turntable 2 generally adopts aluminum alloy, the weight is lighter and only 1-2 kg, and the weight of the photovoltaic module 7 is heavier and is about 12kg, the weight of the detection turntable 2 is negligible compared with that of the photovoltaic module 7, the rotation shaft 21 is only required to be ensured to be positioned in the middle of the thickness of the photovoltaic module 7, the zero calibration effect of gravity can be realized by being positioned above the gravity center, and the weight of the two sides of the shaft of the detection turntable 2 can be balanced by installing a balancing weight on the detection turntable 2 when necessary, so that the gravity center of the detection turntable and the gravity center of the photovoltaic module 7 are positioned on a vertical plane, and the zero calibration effect of the photovoltaic module 7 is prevented from being influenced.
In order to realize that the photovoltaic module 7 can automatically rotate to a vertical state under the action of gravity and realize zero calibration, the rotation drive and the rotation shaft 21 are disconnected during zero calibration, so that the rotation of the rotation shaft 21 is not limited by the rotation drive;
the detection turntable 2 and the photovoltaic module 7 are rotated to a vertical state under the action of gravity;
the rotational drive reestablishes the linkage with the rotational shaft 21.
Wherein, make detection revolving stage 2 and photovoltaic module 7 rotate to vertical state under the effect of gravity, still include setting up rotatory damping on rotation axis 21, rotatory damping is used for reducing the swing when rotating to vertical state.
If the detection turntable 2 and the photovoltaic module 7 are not interfered when the time is calibrated, the photovoltaic module 7 can swing back and forth under the action of gravity, so that the problem of long time is caused when the time is calibrated, and the swing of the photovoltaic module 7 during rotation is reduced by arranging the rotation damping on the rotation shaft 21, so that the photovoltaic module 7 is more quickly stabilized in a vertical state, and the test efficiency is improved.
As a preferable example of the above embodiment, the disconnection of the rotation drive from the rotation shaft 21 includes: a clutch 5 is arranged between the rotation drive and the rotation shaft 21, and when the clutch 5 is separated, the rotation drive and the rotation shaft 21 are disconnected;
the clutch 5 engages, and the rotational drive reestablishes the linkage with the rotational shaft 21.
Each time the zero adjustment rotational drive is disconnected from the rotation shaft 21, the rotational drive is rotated in the direction to be tested by a set threshold value.
In general, the rotation drive is a combination of the servo motor 31 and the decelerator 32, and when the IAM test is performed on the photovoltaic module 7, it is necessary to perform the test in two directions, and therefore, it is necessary to perform the forward and reverse rotation of the servo motor 31 and the decelerator 32, and in the switching process of the forward and reverse rotation, since there is a gap between the parts such as the gears in the decelerator 32, the rotation angle is deviated, and therefore, it is necessary to eliminate the rotation angle deviation. Through the disconnection linkage between every time school zero rotation drive and rotation axis 21, carry out the rotation that sets for the threshold value with rotation drive to the direction that needs the test, promptly when school zero, disconnection linkage between rotation drive and the rotation axis 21, photovoltaic module 7 moves to vertical state, and rotation drive can carry out the reversal at this moment first, eliminates the clearance between spare parts such as gear, establishes the linkage with rotation axis 21 again, guarantees rotation drive's rotation angle's accuracy.
When the IAM loss is tested, the detection turntable 2 is driven to rotate from vertical to horizontal, and when the detection turntable rotates for a set angle, the rotation is stopped, and the IAM loss under the angle is tested.
For example, firstly, performing clockwise rotation test, and suspending the photovoltaic module 7 when turning to 10 degrees, 20 degrees, … … degrees and 90 degrees, and suspending detection once each time until the detection is completed; and reset, the rotation drive and the rotation shaft 21 are disconnected after reset, so that the photovoltaic module 7 is zeroed under the action of gravity, and then the rotation test is driven to anticlockwise rotate, the photovoltaic module 7 is suspended when the rotation speed is 10 DEG, 20 DEG … … DEG and 90 DEG, and the detection is suspended once each time until the detection is completed.
As shown in fig. 4, the embodiment further includes a photovoltaic module 7IAM testing system, and the method includes:
the support 1, the support 1 is set up in the working plane;
the detection turntable 2 is arranged on the support 1 and comprises a rotating shaft 21, the detection turntable 2 rotates by taking the horizontal direction as the center of the rotating shaft 21 through the rotating shaft 21, and the photovoltaic module 7 is arranged on the detection turntable 2;
the rotary driving assembly 3 is arranged on the support 1 and used for driving the detection turntable 2 to rotate;
the detection lamp 4 is vertically arranged on one side of the detection turntable 2 and used for polishing the photovoltaic panel;
wherein, the rotation shaft 21 of the detection turntable 2 is eccentrically arranged, so that the detection turntable 2 can rotate to a vertical state under the action of gravity.
Through changing the zero degree position of photovoltaic module 7 from the horizontal state to vertical state to through setting up the rotation axis 21 eccentric of detecting revolving stage 2, thereby under the condition that detecting revolving stage 2 is not driven, because the eccentric of rotation axis 21, detect revolving stage 2 can be under the effect of gravity automatic rotation to vertical state, thereby can guarantee that the zero degree position of photovoltaic module 7 can not appear the deviation, and before carrying out the rotation test at every turn, all carry out the school zero to photovoltaic module 7, guarantee the accuracy of the IAM test's of photovoltaic module 7 result.
In the present embodiment, a clutch 5 is provided between the rotary drive unit 3 and the rotary shaft 21, and the clutch 5 is used to control the on-off of the linkage between the rotary drive unit 3 and the rotary shaft 21.
The rotary driving assembly 3 comprises a servo motor 31 and a speed reducer 32, the servo motor 31 is in transmission connection with the speed reducer 32, and the speed reducer 32 is in transmission connection with the clutch 5.
In general, the rotation drive is a combination of the servo motor 31 and the decelerator 32, and when the IAM test is performed on the photovoltaic module 7, it is necessary to perform the test in two directions, and therefore, it is necessary to perform the forward and reverse rotation of the servo motor 31 and the decelerator 32, and in the switching process of the forward and reverse rotation, since there is a gap between the parts such as the gears in the decelerator 32, the rotation angle is deviated, and therefore, it is necessary to eliminate the rotation angle deviation. Through the disconnection linkage between every time school zero rotation drive and rotation axis 21, carry out the rotation that sets for the threshold value with rotation drive to the direction that needs the test, promptly when school zero, disconnection linkage between rotation drive and the rotation axis 21, photovoltaic module 7 moves to vertical state, and rotation drive can carry out the reversal at this moment first, eliminates the clearance between spare parts such as gear, establishes the linkage with rotation axis 21 again, guarantees rotation drive's rotation angle's accuracy.
Wherein, the other end is provided with rotatory attenuator 6 on the rotation axis 21, and rotatory attenuator 6 is used for reducing and detects the swing that revolving stage 2 rotatable to vertical state under the effect of gravity.
If the detection turntable 2 and the photovoltaic module 7 are not interfered when the time is calibrated, the photovoltaic module 7 can swing back and forth under the action of gravity, so that the problem of long time is caused when the time is calibrated, and the swing of the photovoltaic module 7 during rotation is reduced by arranging the rotary damper 6 on the rotary shaft 21, so that the photovoltaic module 7 is more quickly stabilized in a vertical state, and the test efficiency is improved.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The IAM testing method for the photovoltaic module is characterized by comprising the following steps of:
setting the zero-degree position of the photovoltaic module to be in a vertical state, and vertically arranging the detection lamp on the side surface of the photovoltaic module;
the rotating shaft of the detection turntable is eccentrically arranged, so that the detection turntable can rotate to a vertical state under the action of gravity;
installing the photovoltaic module on the detection turntable, and calibrating zero of the photovoltaic module by gravity before detection;
driving the detection turntable to rotate to one side of the detection turntable, and testing IAM loss in the direction;
resetting the detection turntable and resetting the detection turntable;
driving the detection turntable to rotate to the other side, and testing IAM loss in the other direction;
resetting the detection turntable to finish detection.
2. The method for testing the photovoltaic module IAM according to claim 1, wherein the rotating shaft is arranged at the thickness center of the photovoltaic module, and the rotating shaft is positioned right above the gravity center of the photovoltaic module.
3. The method for testing the IAM of the photovoltaic module according to claim 2, wherein the zeroing of the photovoltaic module by gravity before the detection comprises:
the linkage between the rotation drive and the rotation shaft is disconnected, so that the rotation of the rotation shaft is not limited by the rotation drive;
rotating the detection turntable and the photovoltaic module to a vertical state under the action of gravity;
the rotational drive reestablishes the linkage with the rotational shaft.
4. The method for testing the IAM of the photovoltaic module according to claim 3, wherein the rotating the inspection turntable and the photovoltaic module to the vertical state under the action of gravity further comprises providing a rotation damper on the rotation shaft, and the rotation damper is used for reducing the swing when rotating to the vertical state.
5. The method according to claim 3, wherein each time the zero-correction rotational drive is decoupled from the rotational shaft, the rotational drive is rotated in a direction to be tested by a set threshold.
6. The method for testing the IAM of the photovoltaic module according to claim 1, wherein when the IAM loss is tested, the detection turntable is driven to rotate from the vertical direction to the horizontal direction, and when the detection turntable rotates for a set angle, the rotation is stopped, and the IAM loss under the angle is tested.
7. A photovoltaic module IAM test system, characterized in that it uses the method according to any one of claims 1 to 6, comprising:
the support is arranged on the working plane;
the detection turntable is arranged on the support and comprises a rotating shaft, the detection turntable rotates by taking the horizontal direction as the rotating shaft center through the rotating shaft, and the photovoltaic module is arranged on the detection turntable;
the rotary driving assembly is arranged on the support and used for driving the detection turntable to rotate;
the detection lamp is vertically arranged on one side of the detection turntable and used for polishing the photovoltaic panel;
the rotary shaft of the detection rotary table is eccentrically arranged, so that the detection rotary table can rotate to a vertical state under the action of gravity.
8. The photovoltaic module IAM test system according to claim 7, wherein a clutch is provided between the rotary drive module and the rotary shaft, and the clutch is used for controlling on-off of linkage between the rotary drive module and the rotary shaft.
9. The photovoltaic module IAM testing system according to claim 7, wherein a rotary damper is provided at the other end of the rotary shaft, and the rotary damper is configured to reduce the swing of the inspection turntable that is rotatable to a vertical state under the action of gravity.
10. The photovoltaic module IAM test system according to claim 8, wherein said rotary drive assembly includes a servo motor and a decelerator, said servo motor in driving connection with said decelerator in driving connection with said clutch.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310669462.1A CN116388692B (en) | 2023-06-07 | 2023-06-07 | Photovoltaic module IAM test method and test system |
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| CN202310669462.1A CN116388692B (en) | 2023-06-07 | 2023-06-07 | Photovoltaic module IAM test method and test system |
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| CN116388692B CN116388692B (en) | 2023-09-01 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN213027954U (en) * | 2020-10-12 | 2021-04-20 | 青海黄河上游水电开发有限责任公司光伏产业技术分公司 | Auxiliary testing device and testing device for double-sided photovoltaic module |
| CN114189211A (en) * | 2021-12-07 | 2022-03-15 | 常州华阳检验检测技术有限公司 | Full-size photovoltaic module IAM testing device and testing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN213027954U (en) * | 2020-10-12 | 2021-04-20 | 青海黄河上游水电开发有限责任公司光伏产业技术分公司 | Auxiliary testing device and testing device for double-sided photovoltaic module |
| CN114189211A (en) * | 2021-12-07 | 2022-03-15 | 常州华阳检验检测技术有限公司 | Full-size photovoltaic module IAM testing device and testing method thereof |
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