CN113098392A - Ultraviolet wet freezing simulation test method and test box for photovoltaic module - Google Patents
Ultraviolet wet freezing simulation test method and test box for photovoltaic module Download PDFInfo
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- CN113098392A CN113098392A CN202110425617.8A CN202110425617A CN113098392A CN 113098392 A CN113098392 A CN 113098392A CN 202110425617 A CN202110425617 A CN 202110425617A CN 113098392 A CN113098392 A CN 113098392A
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- 238000012360 testing method Methods 0.000 title claims abstract description 126
- 238000010998 test method Methods 0.000 title claims abstract description 41
- 238000004088 simulation Methods 0.000 title claims abstract description 37
- 238000007710 freezing Methods 0.000 title claims abstract description 36
- 230000008014 freezing Effects 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 9
- 230000002045 lasting effect Effects 0.000 claims abstract description 5
- 230000032683 aging Effects 0.000 description 26
- 239000000463 material Substances 0.000 description 6
- 238000004378 air conditioning Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000006750 UV protection Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000010792 warming Methods 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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- 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
- H02S50/15—Testing of PV devices, e.g. of PV modules or single PV cells using optical means, e.g. using electroluminescence
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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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- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention relates to an ultraviolet moisture freezing simulation test method and a test box for a photovoltaic module. The method comprises the steps of placing a photovoltaic module to be tested in a test box; setting test parameters based on ultraviolet moisture freezing test conditions to be simulated; and carrying out a predetermined number of and successive test cycles based on the test parameters, each test cycle lasting a predetermined period of time and comprising the process of: raising the temperature in the test chamber to a predetermined elevated temperature for a first sub-period of a predetermined period of time while controlling the humidity in the test chamber to be within a predetermined humidity range; after the first sub-period of time, stopping controlling the humidity in the test chamber, and reducing the temperature in the test chamber to the first preset low temperature for a second sub-period of time of the preset time period, wherein the second sub-period of time is shorter than the first sub-period of time; the ultraviolet light source is turned on when the first cycle is started or when a second predetermined low temperature is reached, and is turned off when a third predetermined low temperature is reached, the third predetermined low temperature being higher than the first predetermined low temperature and lower than the second predetermined low temperature.
Description
Technical Field
The invention relates to the field of photovoltaics, in particular to an ultraviolet moisture freezing simulation test method and a test box for a photovoltaic module.
Background
Photovoltaic modules (also referred to as "solar panels") are a core part of, and the most important part of, solar power generation systems. The photovoltaic module mainly functions to convert solar energy into electric energy and send the electric energy to a storage battery for storage or push a load to work. The degree of aging (or degradation) of the photovoltaic module can also vary in different application environments. Therefore, in order to know the aging degree of the photovoltaic module under a specific environment, the photovoltaic module needs to be placed in a test box, and a simulated aging test is carried out on the photovoltaic module by simulating the specific environment.
For example, chinese patent application publication CN111313832A discloses a method for testing the endurance performance of a photovoltaic module. The method for testing the tolerance performance of the photovoltaic module comprises the steps of carrying out ultraviolet aging, mechanical aging and environmental aging on the photovoltaic module, wherein the environmental aging comprises at least one of thermal cycle aging, humid freeze aging and humid heat aging. The test method mainly aims at the ultraviolet tolerance performance required by the photovoltaic module of the mobile energy. However, the aging degree of the photovoltaic module in a high-altitude environment cannot be accurately simulated by the testing method. FIG. 1 illustrates a prior art UV alone testing method at a set temperature range of 60 + -5 deg.C. Likewise, the test method cannot accurately simulate the aging degree of the photovoltaic module in the actual environment.
Accordingly, there is a need in the art for a new solution to the above problems.
Disclosure of Invention
In order to solve the technical problem that the test method of the photovoltaic module in the prior art cannot accurately simulate the aging degree of the photovoltaic module in the actual environment, the invention provides an ultraviolet moisture freezing simulation test method for the photovoltaic module, which comprises the following steps:
placing a photovoltaic module to be tested in a test box;
setting ultraviolet wet freezing test parameters based on ultraviolet wet freezing test conditions to be simulated; and
performing a predetermined number of and consecutive test cycles based on the ultraviolet freeze test parameters, each test cycle lasting for a predetermined period of time and comprising the following processes:
raising the temperature within the test chamber to a predetermined elevated temperature and at the predetermined elevated temperature for a first sub-period of the predetermined period of time while controlling the humidity within the test chamber to be within a predetermined humidity range;
after the first sub-period of time has elapsed, ceasing to control the humidity within the test chamber, reducing the temperature within the test chamber to a first predetermined low temperature, and continuing at the first predetermined low temperature for a second sub-period of the predetermined period of time, the second sub-period of time being shorter than the first sub-period of time; and
turning on the ultraviolet light source when a first test cycle is started or when a second predetermined low temperature is reached, and turning off the ultraviolet light source when a third predetermined low temperature is reached, the third predetermined low temperature being higher than the first predetermined low temperature and lower than the second predetermined low temperature.
In the ultraviolet moisture freezing simulation test method for the photovoltaic module, ultraviolet moisture freezing test parameters are set based on ultraviolet moisture freezing test conditions to be simulated. Such ultraviolet freezing parameters can simulate a test environment as close to an actual environment as possible in the test chamber. Then, a predetermined number of and successive test cycles are performed according to the ultraviolet freeze test parameters. Each test cycle lasting a predetermined period of time and being repeated a predetermined number of times may promote rapid aging of the photovoltaic module in a simulated environment. Each test cycle included: raising the temperature in the test chamber to a predetermined high temperature and maintaining the temperature at the predetermined high temperature for a first sub-period of time while controlling and maintaining the humidity in the test chamber within a predetermined humidity range; after the first sub-time period, stopping controlling the humidity in the test chamber, reducing the temperature in the test chamber to a first preset low temperature, and continuing for a second sub-time period at the first preset low temperature; the ultraviolet light source is turned on when the first test cycle is initiated or when a second predetermined low temperature is reached, and turned off when a third predetermined low temperature is reached. The comprehensive test method combining the temperature, the humidity and the ultraviolet lamp irradiation according to the preset conditions in the same test cycle and combining the continuous repetition for the preset times can ensure that the aging degree of the photovoltaic module in the simulation test is basically consistent with the aging degree of the photovoltaic module continuously used for the preset number of years in the actual environment. Therefore, the result generated by the test method can provide more scientific basis for the manufacturers of the photovoltaic modules and the materials thereof and the sizing and the type selection of the outdoor power station.
In the preferable technical scheme of the ultraviolet moisture freezing simulation test method for the photovoltaic module, the preset times are more than or equal to 10 times. At least 10 consecutive test cycles can guarantee the aging speed of the photovoltaic module in a simulated environment.
In a preferable technical scheme of the ultraviolet moisture freezing simulation test method for the photovoltaic module, the predetermined high temperature is greater than or equal to 85 ℃, and the first predetermined low temperature is less than or equal to-40 ℃. Such high and low temperatures can cause rapid aging of photovoltaic modules in alternating hot and humid heat and cold.
In the preferable technical scheme of the ultraviolet moisture freezing simulation test method for the photovoltaic module, the second preset low temperature is more than or equal to 0 ℃, and the third preset low temperature is less than or equal to-20 ℃. Controlling the turning on and off of the ultraviolet light source based on these two temperatures can ensure that the photovoltaic module is subjected to sufficient ultraviolet radiation.
In the preferable technical scheme of the ultraviolet moisture freezing simulation test method for the photovoltaic module, the preset time period is less than or equal to 24 h.
In the preferable technical scheme of the ultraviolet wet freezing simulation test method for the photovoltaic module, the ultraviolet lamp light source has irradiation intensity, irradiation unevenness and ultraviolet light wavelength, and the irradiation intensity is less than or equal to 250w/m2The irradiation unevenness is less than or equal to 15%, and the wavelength band of the ultraviolet light is 280-400 nm and continuous.
In a preferred technical scheme of the ultraviolet moisture freezing simulation test method for the photovoltaic module, in the ultraviolet light of the ultraviolet lamp light source, the percentage of UVB/(UVA + UVB) is 3% to 10%. This ratio is consistent with the percentage of UVB/(UVA + UVB) in nature.
In a preferred technical scheme of the ultraviolet moisture freezing simulation test method for the photovoltaic module, the predetermined humidity range is 30% to 85% RH.
In the preferable technical scheme of the ultraviolet moisture freezing simulation test method for the photovoltaic module, the first sub-time period is not more than 20h, and the second sub-time period is not less than 0.5 h.
The invention also provides a test box which comprises a test space for placing the photovoltaic module, and the test box carries out ultraviolet moisture freezing simulation test on the photovoltaic module by using any one of the ultraviolet moisture freezing simulation test methods. Through the test box, the aging degree of the photovoltaic module in a simulation test can be basically consistent with the aging degree of the photovoltaic module continuously used for a preset number of years in an actual environment.
Drawings
Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:
FIG. 1 is a prior art UV alone test method at a set temperature range of 60 + -5 deg.C;
FIG. 2 is a schematic front view of an embodiment of a test chamber of the present invention;
FIG. 3 is a schematic left view of an embodiment of a test chamber of the present invention;
FIG. 4 is a schematic top view of an embodiment of a test chamber of the present invention;
FIG. 5 is a flow chart of an ultraviolet moisture freeze simulation test method for a photovoltaic module according to the present invention;
fig. 6 is an ultraviolet hygrofreezing comprehensive test curve of an embodiment of the ultraviolet hygrofreezing simulation test method for a photovoltaic module according to the present invention.
List of reference numerals:
1. a test chamber; 11. a box body; 12. double doors are opened; 121. a touch screen; 122. an observation window; 123. a door switch; 124. a door handle; 13. a test space; 14. an electric control chamber; 15. a water control chamber; 16. opening a hole in the lamp; 17. a pressure relief vent; 18. a power line hole; 19. a test well; 20. an air conditioning system; 21. a compressor; 22. a condenser; 23. an evaporator; 30. upgrading the structure; 40. a fan.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
In order to solve the technical problem that the test method of the photovoltaic module in the prior art cannot accurately simulate the aging degree of the photovoltaic module in the actual environment, the invention provides an ultraviolet moisture freezing simulation test method for the photovoltaic module, which comprises the following steps:
placing the photovoltaic module to be tested in a test box (step S1);
setting ultraviolet hygrozen test parameters based on ultraviolet hygrozen test conditions to be simulated (step S2); and
performing a predetermined number of and consecutive test cycles based on the ultraviolet freeze test parameters, each test cycle lasting for a predetermined period of time and including the following processes (step S3):
raising the temperature in the test chamber to a predetermined high temperature and at the predetermined high temperature for a first sub-period of a predetermined period of time while controlling the humidity in the test chamber to be within a predetermined humidity range (step S4);
stopping controlling the humidity within the test chamber after the first sub-period of time has elapsed, lowering the temperature within the test chamber to a first predetermined low temperature, and continuing for a second sub-period of time of the predetermined period of time at the first predetermined low temperature, the second sub-period of time being shorter than the first sub-period of time (step S5); and
the ultraviolet light source is turned on when the first test cycle is started or when the second predetermined low temperature is reached, and turned off when a third predetermined low temperature, which is higher than the first predetermined low temperature and lower than the second predetermined low temperature, is reached (step S6).
The invention also comprises a test box using the ultraviolet moisture freezing simulation test method. Fig. 2 is a schematic front view of an embodiment of a test chamber of the present invention. Fig. 3 is a schematic left view of an embodiment of a test chamber of the present invention. Fig. 4 is a schematic top view of an embodiment of a test chamber of the present invention. As shown in fig. 2-4, in one or more embodiments, test chamber 1 has a generally cuboid-shaped housing 11. A double door 12 is provided on the front side of the case 11. A touch screen 121 is provided on the left side of the double door 12. The test chamber 1 can be controlled and test parameters can be set through the touch screen 121. An observation window 122 is also provided on the double door 12 for observing the inside of the test chamber 1. A door switch 123 and a door handle 124 for facilitating the opening of the double door 12 are also provided on the double door 12. As shown in fig. 3, a test space 13 is provided in the front portion of the case 11. Photovoltaic modules (not shown in the figures) can be placed in this test space 13. An air conditioning system 20 is disposed at the rear portion inside the cabinet 11. The air conditioning system 20 comprises a compressor 21, a condenser 22 positioned above the compressor 21, and an evaporator 23 arranged close to the test space 13. As shown in fig. 4, an electric control chamber 14 and a water control chamber 15 are further provided at the rear of the cabinet 11 for controlling an air conditioning system 20 and a humidity adjusting system (not shown). An upgrade structure 30 and a blower 40 are provided on the top of the case 11. The upgrade structure 30 is located above the test space 13 to facilitate movement of the photovoltaic assembly. In one or more embodiments, the upgrade structure 30 may be provided with lights to provide illumination for the lifting operation. A lamp opening 16 and a power cord hole 18 are also provided on the top of the case 11. A pressure relief hole 17 communicated with the test space 13 is formed in the top of the box body 11 and close to the lamp opening 16.
The ultraviolet moisture freezing simulation test method for a photovoltaic module according to the present invention is described below based on the above test chamber. Fig. 5 is a flow chart of the ultraviolet moisture freezing simulation test method for photovoltaic modules according to the present invention. The photovoltaic module is placed in the test space 13 of the test chamber 1 and the test method described below is started.
As shown in fig. 5, first, the environment and the parameters of the ultraviolet irradiation are set in accordance with the ultraviolet freeze comprehensive test conditions to be simulated (step S2). The ultraviolet moisture freezing comprehensive test condition to be simulated is, for example, a condition after the photovoltaic module is used for 5 years in a high altitude environment. In one or more embodiments, the parameters of the environment and the ultraviolet illumination that need to be set based on such conditions to be simulated are as follows:
20 test cycles;
a predetermined high temperature of 85 ℃;
a first predetermined low temperature of-40 ℃;
a second predetermined low temperature of 0 ℃;
a third predetermined low temperature of-20 ℃;
a predetermined period of time 24 h;
a first sub-period of time 20 h;
the second sub-period is 0.5 h;
humidity control range 85% +/-5% RH;
the irradiation intensity is less than or equal to 250w/m2；
The irradiation unevenness is less than or equal to 15 percent;
the wavelength band of ultraviolet light is 280-400 nm and is continuous;
the percentage of UVB in the total energy (UVA + UVB) is between 3 and 10%. These parameters, taken together, ensure that the photovoltaic module is subjected to a substantially consistent level of ageing in a simulated environment within the test chamber over a relatively short period of time as compared to ageing over a longer period of time in an actual environment.
In an alternative embodiment, due to the change of the ultraviolet and moisture freezing comprehensive test conditions to be simulated, the test parameters of the environment and the ultraviolet illumination which need to be set can be changed, as long as the test parameters meet the following requirements:
the preset high temperature is more than or equal to 85 ℃;
the first preset low temperature is less than or equal to-40 ℃;
the second preset low temperature is more than or equal to 0 ℃;
the third preset low temperature is less than or equal to minus 20 ℃;
the preset time period is less than or equal to 24 h;
the first sub-time period is more than or equal to 20 h;
the second sub-time period is more than or equal to 0.5 h;
the humidity control range is 30-85% RH;
the irradiation intensity is less than or equal to 250w/m2；
The irradiation unevenness is less than or equal to 15 percent;
the wavelength band of ultraviolet light is 280-400 nm and is continuous;
the percentage of UVB in the total energy (UVA + UVB) is between 3 and 10%. These parameters, taken together, also ensure that the photovoltaic module is subjected to a degree of ageing in a simulated environment in the test chamber over a relatively short period of time that is substantially the same as the degree of ageing over a longer period of time in an actual environment.
After the test parameter set-up is complete, the first test cycle is started. Fig. 6 is an ultraviolet hygrofreezing comprehensive test curve of an embodiment of the ultraviolet hygrofreezing simulation test method for a photovoltaic module according to the present invention. As shown in fig. 6, the first test cycle starts at room temperature, e.g., 25 ℃. Therefore, when the first test cycle is started, the ultraviolet light source is immediately turned on according to the set irradiation intensity, irradiation unevenness, wavelength and ratio of UVB; the heating device in test chamber 1 was turned on to raise the temperature in test space 13 to 85 ℃ at the first temperature rise rate for 20 hours while controlling the humidity in test chamber 1 to 85% ± 5% (step S4). The first ramp rate is equal to or less than 100 deg.C/h, for example 95 deg.C/h. After 20 hours, the humidity control was stopped, and the temperature in the test space 13 was lowered to-40 ℃ and maintained for 0.5 hours (step S5). When the temperature in the test space 13 falls to-20 deg.c, the ultraviolet light source is turned off (step S6). As shown in FIG. 6, in one or more embodiments, the temperature in the test space 13 is reduced to-40 ℃ in the following manner: the temperature is first reduced from 85 ℃ to 0 ℃ at a first slower cooling rate, and then reduced from 0 ℃ to-40 ℃ at a second faster cooling rate. The first slower cooling rate is less than or equal to 100 deg.c/h, for example 95 deg.c/h. The second, faster ramp down rate is less than or equal to 200 deg.c/h, such as 180 deg.c/h. After 0.5h, the warming operation is performed again on the test space 13 to restart the test cycle, and is repeated 20 times in total (step S3). When the temperature of the test space 13 rises to 0 ℃, the ultraviolet light source is turned on again (step S6).
After the ultraviolet wet freezing test process is completed, the photovoltaic module can be used for testing the power attenuation condition. Further, the appearance of the material of the photovoltaic module can be observed, and the mechanical properties, electrical properties, and the like thereof are measured. Finally, the data are compared with corresponding data of the photovoltaic module after 5 years of outdoor actual use to analyze the difference between the data and the corresponding data.
Through the comprehensive test of thermal cycle and ultraviolet ray for 20 times, when the ultraviolet ray cumulant reaches 75KWH/m2, the aging states of the photovoltaic module and the material thereof tested by the comprehensive simulation method are basically consistent after the photovoltaic module and the material thereof are compared with the photovoltaic module and the material thereof which are actually used for 5 years in a high latitude environment, so that the test method can provide a more scientific basis for the sizing and the type selection of the photovoltaic module and the material manufacturer thereof and an outdoor power station.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the invention, a person skilled in the art may combine technical features from different embodiments, and may make equivalent changes or substitutions for related technical features, and such changes or substitutions will fall within the scope of the invention.
Claims (10)
1. An ultraviolet moisture freezing simulation test method for a photovoltaic module is characterized by comprising the following steps:
placing a photovoltaic module to be tested in a test box;
setting ultraviolet wet freezing test parameters based on ultraviolet wet freezing test conditions to be simulated; and
performing a predetermined number of and consecutive test cycles based on the ultraviolet freeze test parameters, each test cycle lasting for a predetermined period of time and comprising the following processes:
raising the temperature within the test chamber to a predetermined elevated temperature and at the predetermined elevated temperature for a first sub-period of the predetermined period of time while controlling the humidity within the test chamber to be within a predetermined humidity range;
after the first sub-period of time has elapsed, ceasing to control the humidity within the test chamber, reducing the temperature within the test chamber to a first predetermined low temperature, and continuing at the first predetermined low temperature for a second sub-period of the predetermined period of time, the second sub-period of time being shorter than the first sub-period of time; and
turning on the ultraviolet light source when a first test cycle is started or when a second predetermined low temperature is reached, and turning off the ultraviolet light source when a third predetermined low temperature is reached, the third predetermined low temperature being higher than the first predetermined low temperature and lower than the second predetermined low temperature.
2. The ultraviolet moisture freezing simulation test method for the photovoltaic module according to claim 1, wherein the predetermined number of times is not less than 10 times.
3. The ultraviolet hygrofreezing simulation test method for a photovoltaic module according to claim 1, wherein the predetermined high temperature is 85 ℃ or higher, and the first predetermined low temperature is-40 ℃.
4. The ultraviolet freeze simulation test method for photovoltaic modules of claim 1, wherein the second predetermined low temperature is ≧ 0 ℃ and the third predetermined low temperature is ≦ -20 ℃.
5. The ultraviolet moisture freezing simulation test method for photovoltaic modules according to claim 1, wherein the predetermined period of time is ≤ 24 h.
6. The uv freeze simulation test method for a photovoltaic module of claim 1, wherein the uv lamp light source has an irradiation intensity,Irradiation unevenness and ultraviolet wavelength, wherein the irradiation intensity is less than or equal to 250w/m2The irradiation unevenness is less than or equal to 15%, and the wavelength band of the ultraviolet light is 280-400 nm and continuous.
7. The ultraviolet moisture freeze simulation test method for photovoltaic modules according to claim 6, wherein the percentage of UVB/(UVA + UVB) in the ultraviolet light of the ultraviolet lamp light source is 3% to 10%.
8. The ultraviolet moisture freezing simulation test method for photovoltaic modules according to claim 1, wherein the predetermined humidity range is 30% to 85% RH.
9. The ultraviolet moisture freezing simulation test method for the photovoltaic module according to claim 1, wherein the first sub-period of time is not less than 20h, and the second sub-period of time is not less than 0.5 h.
10. A test chamber comprising a test space in which a photovoltaic module can be placed, and performing an ultraviolet hygrofreezing simulation test on the photovoltaic module using the ultraviolet hygrofreezing simulation test method according to any one of claims 1 to 9.
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| CN113567329A (en) * | 2021-07-23 | 2021-10-29 | 无锡市产品质量监督检验院 | Ultraviolet, damp and hot comprehensive test method and ultraviolet, damp and hot comprehensive test box for photovoltaic module |
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| CN102539310A (en) * | 2011-12-15 | 2012-07-04 | 广东工业大学 | Method for atmospheric exposure test for photovoltaic cable |
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| CN102539310A (en) * | 2011-12-15 | 2012-07-04 | 广东工业大学 | Method for atmospheric exposure test for photovoltaic cable |
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| CN113567329A (en) * | 2021-07-23 | 2021-10-29 | 无锡市产品质量监督检验院 | Ultraviolet, damp and hot comprehensive test method and ultraviolet, damp and hot comprehensive test box for photovoltaic module |
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