CN103076549A - Damp heat test device and method for photovoltaic assembly - Google Patents
Damp heat test device and method for photovoltaic assembly Download PDFInfo
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- CN103076549A CN103076549A CN2012105924115A CN201210592411A CN103076549A CN 103076549 A CN103076549 A CN 103076549A CN 2012105924115 A CN2012105924115 A CN 2012105924115A CN 201210592411 A CN201210592411 A CN 201210592411A CN 103076549 A CN103076549 A CN 103076549A
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- photovoltaic module
- damp heat
- heat test
- test device
- power supply
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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
Abstract
The invention provides a damp heat test device and a method for a photovoltaic assembly. The device comprises a test box which simulates a damp heat environment and is provided with a photovoltaic assembly installation part for installing a tested photovoltaic assembly, and a power supply which is provided with a power supply terminal which supplies power to the photovoltaic assembly inside the test box. An outdoor extreme state is simulated in the test box when the photovoltaic assembly works in the damp heat environment, and meanwhile, a sustaining voltage equivalent to a solar power system is applied to the photovoltaic assembly to simulate the working state of the photovoltaic assembly in the power generation process, so that the damp heat test can be completed within a short time. The quality of the photovoltaic assembly is determined and the power generation quantity of the photovoltaic assembly is predicted by comparing power attenuation values before and after test. As the damp heat test device provided by the invention is simple in structure, the damp heat test device can be widely applied in actual production.
Description
Technical field
The present invention relates to the manufacturing field of photovoltaic module, in particular to the damp heat test device and method of photovoltaic module.
Background technology
The solar panel of photovoltaic module is the core in the solar power system, also is to be worth the highest part in the solar power system.Its effect is to convert solar energy into electrical energy, or is sent in the accumulator and stores, or promotes loaded work piece.
Generally just simply photovoltaic module is carried out power test before at present photovoltaic module being installed to solar power system, after the test, carry out again power test after one week at solar light irradiation, the variation of power after the contrast illumination decay, but this test is not owing to simulating the duty of photovoltaic module, but only contrast power before and after the illumination, therefore be difficult to determine the high low degree of photovoltaic module power stage, thereby just be difficult to also determine whether the inherent quality of photovoltaic module is reliable.
Summary of the invention
The present invention aims to provide a kind of damp heat test device and method of photovoltaic module, can determine at short notice whether the quality of photovoltaic module is reliable.
To achieve these goals, according to an aspect of the present invention, provide a kind of damp heat test device of photovoltaic module, the damp heat test device comprises: be used for the chamber of simulation hygrothermal environment, have the photovoltaic module installation portion that underproof photovoltaic module is installed; Power supply has the inside of the chamber of being arranged on the power supply terminal to the photovoltaic module power supply.
Further, the positive pole of above-mentioned power supply is connected with the frame of photovoltaic module, and the negative pole of power supply is connected with the internal circuit of photovoltaic module.
Further, above-mentioned photovoltaic module is a plurality of, and the spacing of photovoltaic module is greater than the safe distance of damp heat test, and is connected with the negative pole of power supply after the internal circuit short circuit parallel connection of a plurality of photovoltaic modulies.
Further, the outer wrap of above-mentioned photovoltaic module has external conductive casing.
Further, above-mentioned external conductive casing is masking foil.
Further, above-mentioned chamber also comprises humidity conditioner and temperature control equipment.
Further, above-mentioned power supply is direct supply.
Further, above-mentioned photovoltaic module installation portion comprises insulating support, and insulating support is arranged on and is used for the fixed light photovoltaic assembly in the chamber.
Further, above-mentioned insulating support comprises: bracing frame; Locating rack is fixed on the bracing frame for the fixed light photovoltaic assembly.
Further, above-mentioned locating rack comprises a plurality of backstays that are parallel to each other, and an end of backstay is fixed on the bracing frame, and the other end is free end, is formed for the gap of fixed light photovoltaic assembly between the adjacent positioned bar.
Further, above-mentioned bracing frame comprises: two U-shaped bars, two U-shaped bars are parallel to each other and are setting up and down, be furnished with abreast one group of backstay on each U-shaped bar, be positioned at the one group of backstay that arranges on the one group of backstay that arranges on the U-shaped bar of top and the U-shaped bar that is positioned at the below and arrange correspondingly; Connecting link is arranged between the U-shaped bar for connecting two U-shaped bars.
Further, above-mentioned U-shaped bar comprises the first arm of being parallel to each other and is connected arm and connect the first arm and the linking arm of the second arm, and backstay is fixed on the linking arm of U-shaped bar up and down symmetrically.
Further, has insulation course on the outside surface of above-mentioned insulating support.
According to a further aspect in the invention, provide a kind of damp heat test method of photovoltaic module, this damp heat test method comprises: step S1, photovoltaic module is placed in the hygrothermal environment; Step S2, carry out damp heat test to photovoltaic module energising.
Further, among the above-mentioned steps S1, the ambient humidity of hygrothermal environment is 60 ~ 90%, environment temperature is 60 ~ 85 ℃; Among the above-mentioned steps S2, the voltage of energising is that be 35 ~ 55h DC voltage, the conduction time of 600 ~ 1000V.
Further, above-mentioned steps S2 also comprises: step S21, the frame of photovoltaic module is connected to the positive pole of power supply, the internal circuit of photovoltaic module is connected to the negative pole of power supply; Step S22, opening power are switched on to photovoltaic module.
Further, above-mentioned photovoltaic module is a plurality of, makes the spacing of photovoltaic module greater than safe distance, and is connected to the negative pole of power supply after the internal circuit short circuit parallel connection with a plurality of photovoltaic modulies.
Further, above-mentioned steps S1 also comprised the process that adopts conductive material parcel photovoltaic module before being placed into photovoltaic module in the hygrothermal environment.
Use technical scheme of the present invention, outdoor ultimate limit state when the simulation hygrothermal environment forms photovoltaic module work in chamber, simultaneously photovoltaic module is applied continuous voltage simulated light photovoltaic assembly the duty in power generation process suitable with solar power system, so that damp heat test can be finished at short notice, by the power attenuation value before and after the compare test, larger this photovoltaic module of explanation of pad value second-rate, otherwise the quality that this photovoltaic module is described is better, thereby realizes what of generated energy of determining and predicting this photovoltaic module to the quality of photovoltaic module.Because damp heat test apparatus structure of the present invention is simple, is conducive to the widespread use in actual production.
Description of drawings
The Figure of description that consists of the application's a part is used to provide a further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 shows the damp heat test apparatus structure schematic diagram of a kind of preferred embodiment of the present invention;
Fig. 2 shows the annexation figure according to photovoltaic module and power supply in a kind of preferred embodiment of the present invention; And
Fig. 3 shows the structural representation according to insulating support in a kind of preferred embodiment of the present invention.
Embodiment
Need to prove, in the situation that do not conflict, embodiment and the feature among the embodiment among the application can make up mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
As shown in Figure 1, in a kind of typical embodiment of the present invention, a kind of damp heat test device of photovoltaic module 100 is provided, the damp heat test device comprises chamber 300 and the power supply 400 for the simulation hygrothermal environment, and chamber 300 has the photovoltaic module installation portion that underproof photovoltaic module 100 is installed; Power supply 400 has the inside of chamber of being arranged on 300 with the power supply terminal to photovoltaic module 100 power supplies.
Adopt above-mentioned damp heat test device, outdoor ultimate limit state when chamber 300 interior simulation hygrothermal environments form photovoltaic module work, simultaneously photovoltaic module 100 is applied continuous voltage simulated light photovoltaic assembly 100 the duty in power generation process suitable with solar power system, so that damp heat test can be finished at short notice, by the power attenuation value before and after the compare test, the quality of this photovoltaic module 100 of the larger explanation of pad value is poorer, otherwise the quality that this photovoltaic module 100 is described is better, thereby has realized what of generated energy of determining and predicting this photovoltaic module 100 to the quality of photovoltaic module 100.Because damp heat test apparatus structure of the present invention is simple, is conducive to the widespread use in actual production.
As shown in Figure 2, in a kind of preferred embodiment of the present invention, the positive pole of the power supply 400 of above-mentioned damp heat test device is connected with the frame of photovoltaic module 100, and the negative pole of power supply 400 is connected with the internal circuit of photovoltaic module 100.Under the guidance of photovoltaic module 100 electricity generating principles, the positive pole of power supply 400 is connected with the frame of photovoltaic module 100, thereby negative pole is connected with the internal circuit of photovoltaic module 100 and makes photovoltaic module 100 as being connected in series between the both positive and negative polarity of power supply 400 with resistive element, assesses the quality of photovoltaic module 100 quality after test is finished by the ratio of contrast photovoltaic module 100 power attenuations.
The damp heat test device of photovoltaic module 100 of the present invention is not only tested single photovoltaic module 100, and can test a plurality of photovoltaic modulies 100 simultaneously, when simultaneously a plurality of photovoltaic modulies 100 being tested, as shown in Figure 1, the spacing of photovoltaic module 100 is greater than the safe distance of damp heat test, and is connected with the negative pole of power supply 400 after the internal circuit short circuit parallel connection of a plurality of photovoltaic module 100.After each photovoltaic module 100 short circuit parallel connection each photovoltaic module 100 is tested under identical output voltage.
The outer wrap of above-mentioned photovoltaic module 100 has external conductive casing.Outer wrap external conductive casing at photovoltaic module 100 conducts electricity the extreme environment when further simulated light photovoltaic assembly 100 is worked so that the surface of photovoltaic module 100 is whole.
In a kind of preferred embodiment of the present invention, above-mentioned external conductive casing is masking foil.Masking foil not only has the character of conduction, and can stop distributing of heat that photovoltaic module in the damp heat test process 100 produces, so that the further deterioration of the working environment of photovoltaic module 100 is more near the extreme environment under the duty.
In another preferred embodiment of the present invention, for the temperature and humidity of more accurate control damp heat test device, preferred above-mentioned chamber 300 also comprises humidity conditioner and temperature control equipment.
Because the power supply that provides with electricity generation system of photovoltaic module 100 is direct current, for the duty of simulated light photovoltaic assembly 100 more accurately, preferred above-mentioned power supply 400 is direct supply.
In another preferred embodiment of the present invention, above-mentioned photovoltaic module installation portion comprises insulating support 200, and insulating support 200 is arranged on and is used for fixed light photovoltaic assembly 100 in the chamber 300.Photovoltaic module 100 is fixed on the insulating support 200, has avoided the interconnected cause danger of photovoltaic module 100 unwanted electricity in the damp heat test process.
As shown in Figure 3, above-mentioned insulating support 200 comprises bracing frame 21 and locating rack 22, and locating rack 22 is fixed on and is used for fixed light photovoltaic assembly 100 on the bracing frame 21.Above-mentioned insulating support 200 simple in structure, be convenient to use, therefore be conducive to applying of damp heat test of the present invention.
In another preferred embodiment of the present invention, as shown in Figure 3, above-mentioned locating rack 22 comprises a plurality of backstays that are parallel to each other, and an end of backstay is fixed on the bracing frame 21, the other end is free end, is formed for the gap of fixed light photovoltaic assembly 100 between the adjacent positioned bar.Photovoltaic module 100 is fixed in the gap between the backstay, not only can play the effect of firm regulation, and fixed form is comparatively simple, thereby has simplified damp heat test process of the present invention.
As shown in Figure 3, above-mentioned bracing frame 21 comprises two U-shaped bars 211 and connecting link 212, two U-shaped bars 211 are parallel to each other and are setting up and down, be furnished with abreast one group of backstay on each U-shaped bar, be positioned at the one group of backstay that arranges on the one group of backstay that arranges on the U-shaped bar of top and the U-shaped bar that is positioned at the below and arrange correspondingly; Connecting link 212 is arranged on and is used for connecting two U-shaped bars 211 between " U " shape bar 211.Bracing frame 21 with said structure can give insulating support 200 and photovoltaic module 100 stable support, has guaranteed stability and the security of damp heat test process.
As shown in Figure 3, in order further to guarantee the stability of insulating support 200 of the present invention, above-mentioned U-shaped bar 211 comprises the first arm of being parallel to each other and is connected arm and connect the first arm and the linking arm of the second arm, backstay is fixed on the first arm or the second arm or linking arm on the U-shaped bar 211, and the preferred orientation bar is fixed on the linking arm of U-shaped bar 211 up and down symmetrically.
In the typical embodiment of another kind of the present invention, a kind of damp heat test method of photovoltaic module also is provided, damp heat test method comprises: step S1, photovoltaic module is placed in the hygrothermal environment; Step S2, carry out damp heat test to photovoltaic module energising.
Adopt above-mentioned damp heat test method, outdoor extreme environment when hygrothermal environment is worked close to photovoltaic module, simultaneously photovoltaic module is applied continuous voltage, the duty of simulated light photovoltaic assembly in power generation process, so that damp heat test can be finished at short notice, by the power attenuation value before and after the compare test, realize what of generated energy of determining and predicting this photovoltaic module to the quality of photovoltaic module.Because damp heat test method of the present invention is simple to operate, the test period is shorter, is conducive to the widespread use in actual production.
For the hygrothermal environment of more accurately simulated light photovoltaic assembly work and measure suitable input voltage and the power attenuation value of photovoltaic module in conduction time, among the preferred above-mentioned steps S1, the ambient humidity of hygrothermal environment is 60 ~ 90%, environment temperature is 60 ~ 85 ℃, among the above-mentioned steps S2, the voltage of energising is that be 35 ~ 55h DC voltage, the conduction time of 600 ~ 1000V.
In another preferred embodiment of the present invention, step S2 also comprises: step S21, the frame of photovoltaic module is connected to the positive pole of power supply, the internal circuit of photovoltaic module is connected to the negative pole of power supply; Step S22, opening power are switched on to photovoltaic module.Under the guidance of photovoltaic module electricity generating principle, the positive pole of power supply is connected with the frame of photovoltaic module, thereby negative pole is connected with the internal circuit of photovoltaic module and makes photovoltaic module as being connected in series between the both positive and negative polarity of power supply with resistive element, assesses the quality of photovoltaic module quality after test is finished by the ratio of contrast photovoltaic module power attenuation.
The damp heat test method of photovoltaic module of the present invention is not only applicable to the test of single photovoltaic module, and can test a plurality of photovoltaic modulies simultaneously, when simultaneously a plurality of photovoltaic modulies being tested, make the spacing of photovoltaic module greater than safe distance, and be connected to the negative pole of power supply after the internal circuit short circuit parallel connection with a plurality of photovoltaic modulies.After each photovoltaic module short circuit parallel connection each photovoltaic module is tested under identical output voltage.
In a kind of preferred embodiment of the present invention, above-mentioned steps S1 also comprised the process that adopts conductive material parcel photovoltaic module before being placed into photovoltaic module in the hygrothermal environment.After photovoltaic module utilized conductive material parcel, the duty that is in the photovoltaic module in the hygrothermal environment is worsened, thereby can further shorten the time of damp heat test of the present invention.
Below with reference to embodiment, further specify beneficial effect of the present invention.
The cell panel material of the photovoltaic module of embodiment 1 to 6, positive EVA(ethylene-vinyl acetate copolymer) material and back side EVA material see Table 1, the positive pole of direct supply is connected on the frame of photovoltaic module, is connected to the negative pole of direct supply after the internal circuit parallel connection of two photovoltaic modulies.Carry out the damp heat test of the photovoltaic module of embodiment 1 to 6 according to the parameter setting in the table 1, and the power attenuation rate value before and after the test damp heat test sees Table 1.
Table 1
Can be found out by the data in the table 1, under above-mentioned test condition, the power attenuation value of the photovoltaic cell of same material preparation is basic identical; And contrast_environment humidity is 80%, environment temperature is that 80 ℃, voltage are that 1000V continues the data that energising 48h obtains, the power attenuation value of photovoltaic module with embodiment 1 to 3 of A battery all is higher than the power attenuation value of the photovoltaic module of the embodiment 4 to 6 with battery B, therefore can illustrate that the quality of battery B is apparently higher than the quality of battery A.Can be found out by the test duration in the table 1, the damp heat test method of embodiment 1 to 6 all can detect the quality of photovoltaic module in 60h, therefore is conducive to the widespread use in the actual production.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (18)
1. the damp heat test device of a photovoltaic module is characterized in that, described damp heat test device comprises:
Be used for the chamber (300) of simulation hygrothermal environment, have the photovoltaic module installation portion that underproof photovoltaic module (100) is installed;
Power supply (400) has the power supply terminal of inside to power to described photovoltaic module (100) that is arranged on described chamber (300).
2. damp heat test device according to claim 1, it is characterized in that, the positive pole of described power supply (400) is connected with the frame of described photovoltaic module (100), and the negative pole of described power supply (400) is connected with the internal circuit of described photovoltaic module (100).
3. damp heat test device according to claim 1, it is characterized in that, described photovoltaic module (100) is a plurality of, the spacing of described photovoltaic module (100) is greater than the safe distance of damp heat test, and is connected with the negative pole of described power supply (400) after the internal circuit short circuit parallel connection of a plurality of described photovoltaic module (100).
4. damp heat test device according to claim 1 is characterized in that, the outer wrap of described photovoltaic module (100) has external conductive casing.
5. damp heat test device according to claim 4 is characterized in that, described external conductive casing is masking foil.
6. damp heat test device according to claim 1 is characterized in that, described chamber (300) also comprises humidity conditioner and temperature control equipment.
7. damp heat test device according to claim 1 is characterized in that, described power supply (400) is direct supply.
8. each described damp heat test device in 7 according to claim 1, it is characterized in that, described photovoltaic module installation portion comprises insulating support (200), and described insulating support (200) is arranged on and is used for fixing described photovoltaic module (100) in the described chamber (300).
9. damp heat test device according to claim 8 is characterized in that, described insulating support (200) comprising:
Bracing frame (21);
Locating rack (22) is fixed on support frame as described above (21) upper for fixing described photovoltaic module (100).
10. damp heat test device according to claim 9, it is characterized in that, described locating rack (22) comprises a plurality of backstays that are parallel to each other, one end of described backstay is fixed on the support frame as described above (21), the other end is free end, is formed for the gap of fixing described photovoltaic module (100) between the adjacent described backstay.
11. damp heat test device according to claim 10 is characterized in that, support frame as described above (21) comprising:
Two U-shaped bars (211), described two U-shaped bars (211) are parallel to each other and are setting up and down, be furnished with abreast one group of described backstay on each described U-shaped bar, be positioned at the one group of described backstay that arranges on the one group of described backstay that arranges on the described U-shaped bar of top and the described U-shaped bar that is positioned at the below and arrange correspondingly;
Connecting link (212) is arranged between the described U-shaped bar (211) for connecting two described U-shaped bars (211).
12. damp heat test device according to claim 11, it is characterized in that, described U-shaped bar (211) comprises the first arm that is parallel to each other and the linking arm of being connected arm and connecting described the first arm and described the second arm, and described backstay is fixed on up and down on the linking arm of described U-shaped bar (211) symmetrically.
13. damp heat test device according to claim 8 is characterized in that, has insulation course on the outside surface of described insulating support (200).
14. the damp heat test method of a photovoltaic module is characterized in that, described damp heat test method comprises:
Step S1, described photovoltaic module is placed in the hygrothermal environment;
Step S2, carry out described damp heat test to the energising of described photovoltaic module.
15. damp heat test method according to claim 14 is characterized in that,
Among the described step S1, the ambient humidity of described hygrothermal environment is 60 ~ 90%, environment temperature is 60 ~ 85 ℃;
Among the described step S2, the voltage of described energising is that be 35 ~ 55h DC voltage, the conduction time of 600 ~ 1000V.
16. damp heat test method according to claim 14 is characterized in that, described step S2 also comprises:
Step S21, the frame of described photovoltaic module is connected to the positive pole of power supply, the internal circuit of described photovoltaic module is connected to the negative pole of described power supply;
Step S22, open described power supply and switch on to described photovoltaic module.
17. damp heat test method according to claim 14, it is characterized in that, described photovoltaic module is a plurality of, makes the spacing of described photovoltaic module greater than safe distance, and is connected to the negative pole of described power supply after the internal circuit short circuit parallel connection with a plurality of described photovoltaic modulies.
18. damp heat test method according to claim 14 is characterized in that, described step S1 also comprised the process that adopts conductive material to wrap up described photovoltaic module before being placed into described photovoltaic module in the described hygrothermal environment.
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| CN105790710A (en) * | 2014-12-23 | 2016-07-20 | 国家电网公司 | Potential induced degradation testing method for photovoltaic modules |
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| CN103795341A (en) * | 2014-03-03 | 2014-05-14 | 江苏万丰光伏有限公司 | Method for testing PID-attenuation-proof performance of photovoltaic assembly |
| CN104022737A (en) * | 2014-06-23 | 2014-09-03 | 常州亿晶光电科技有限公司 | Method for testing moisture resistance of solar photovoltaic component |
| CN105790710A (en) * | 2014-12-23 | 2016-07-20 | 国家电网公司 | Potential induced degradation testing method for photovoltaic modules |
| CN104579167B (en) * | 2014-12-30 | 2017-09-29 | 中国电器科学研究院有限公司 | A kind of photovoltaic module hygrothermal environment durability test method |
| CN108226021A (en) * | 2017-12-26 | 2018-06-29 | 米亚索能光伏科技有限公司 | The weatherability detection method and system of a kind of photovoltaic module |
| CN110082669A (en) * | 2019-06-03 | 2019-08-02 | 广东美的厨房电器制造有限公司 | Automatically controlled board measuring method |
| CN112986787A (en) * | 2021-05-20 | 2021-06-18 | 江西省兆驰光电有限公司 | Light-emitting diode testing device |
| CN112986787B (en) * | 2021-05-20 | 2021-07-30 | 江西省兆驰光电有限公司 | Light-emitting diode testing device |
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| CN103076549B (en) | 2016-02-10 |
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