CN104022737A - Method for testing moisture resistance of solar photovoltaic component - Google Patents
Method for testing moisture resistance of solar photovoltaic component Download PDFInfo
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- CN104022737A CN104022737A CN201410284129.XA CN201410284129A CN104022737A CN 104022737 A CN104022737 A CN 104022737A CN 201410284129 A CN201410284129 A CN 201410284129A CN 104022737 A CN104022737 A CN 104022737A
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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 belongs to the field of performance detection for a solar photovoltaic component, and particularly relates to a method for testing moisture resistance of a solar photovoltaic component. The method concretely comprises the following steps: mixing solid chemical substances (indicators) capable of changing color in presence of water on an interface between a back film of a solar component and a reverse ethylene vinyl-acetate copolymer (EVA) layer and an interface between a front EVA layer and a toughened glass layer; carrying out group box sealing by matching with a sealant or a sealing tape by adopting an aluminum frame by a laminating technology, so as to obtain the solar component; and putting the obtained solar component into a high-temperature and high-humidity tank or water, keeping for a period of time according to a high-temperature and high-humidity technology, observing whether the indicators in the component change color, and recording the time node of the color change. By adopting the method, the laminated solar component is directly tested, the detection technology is simple and convenient, and the test result is more reasonable than that of a traditional method for testing the permeability performance of the material before being laminated. Therefore, the method can be used as one of items for evaluating the weatherability of the component.
Description
Technical field
The invention belongs to solar photovoltaic assembly Performance Detection field, particularly a kind of method of testing of the energy of the moisture vapor resistance to solar photovoltaic assembly.
Background technology
Solar energy is primary energy, is again regenerative resource.Its aboundresources, both can freely be used, again without transportation, to environment without any pollution.It is a kind of new lifestyle for the mankind have created, and makes human society enter an energy savings and reduce the epoch of polluting.Modern society, people mainly utilize solar photovoltaic assembly to collect solar energy and generate electricity, thereby meet daily production, household electricity is required.
As shown in Figure 1, solar photovoltaic assembly of the prior art comprises: notacoria 110, back side EVA120, cell piece 130, positive EVA140, toughened glass 150.Solar photovoltaic assembly is when outdoor application, moisture content in air or in rainwater can see through notacoria, back side EVA arrives on cell piece, make in assembly welding or silver slurry be oxidized, easily on cell piece, there is the hidden position of splitting to produce " lightning line " phenomenon, will the power stage of the performance of cell piece and assembly be produced to serious negative effect.Therefore, the moisture vapor resistance of solar photovoltaic assembly can be tested and be had very important significance.
In prior art, pass through to detect the permeability rate of solar photovoltaic assembly, come evaluation component humidity compared with overall situation in the operation risk of assembly: before solar photovoltaic assembly lamination, carry out, with permeability rate tester, each encapsulating material is tested, then estimated or extrapolate the permeability rate of whole assembly.Because the structural parameters of each encapsulating material self before and after lamination can change, and permeable environment and the mode of each material has notable difference before and after encapsulation, can there is relatively large deviation in the actual permeability rate of the encapsulating material of the measured permeability rate of such method of testing after with respect to lamination.
Summary of the invention
Technical problem to be solved by this invention is: in prior art, in the traditional detection method of solar photovoltaic assembly, need respectively each encapsulating material to be tested in advance, can there is relatively large deviation in the actual permeability rate of the encapsulating material of testing result after with respect to lamination, and the method should not be used for assessing photovoltaic module moisture vapor resistance energy, reasonably evaluation component in humidity compared with the operation risk in overall situation.
For solving this technical problem, the technical solution used in the present invention is:
The method of testing that a kind of solar components moisture vapor resistance energy is provided, concrete steps are:
(1) according to the order of notacoria, back side EVA layer, cell piece, positive EVA layer, toughened glass layer, each assembly is stacked gradually, simultaneously on the interface on the interface between notacoria and back side EVA layer, between positive EVA layer and toughened glass layer, be mingled with the solid-state indicator of meeting the variable color of water energy, and pass through laminating technology, obtain laminate
Wherein, the particle size of solid-state help of indicator particles is 20-100um,
As preferably: the solid-state indicator of above-mentioned chance water energy variable color is that anhydrous cupric sulfate, anhydrous chlorides of rase are ferrous,
As preferably: the solid-state indicator of above-mentioned chance water energy variable color, be entrained in the center at interface, and guarantee that after laminating technology, solid-state indicator can not overflow from interlayer,
As preferably: the planar dimension of above-mentioned back side EVA layer and positive EVA layer is slightly larger than toughened glass layer;
(2) by the cooling rear cut edge of the laminate obtaining in step (1), adopt aluminium frame, fitted seal glue or sealant tape are organized frame sealing, obtain solar components, and standing solidifying,
As preferably: the standing curing time is 36h;
(3) solar components obtaining in step (2) is put into hot and humid case, or put into the water of 70-80 ℃, a minute different time is observed, and sees whether solid-state indicator has metachromatism, if having, records the timing node of variable color,
As preferably: in hot and humid case, humidity is that 85%RH, temperature are 85 ℃,
As preferably: whether the solar components obtaining in step (2), observing solid-state indicator every sampling in 6 hours has metachromatism if being put into after hot and humid case,
As preferably: whether the solar components obtaining in step (2) is put into after the water of 70-80 ℃, observing solid-state indicator every sampling in 48h hour has metachromatism.
Beneficial effect of the present invention is: compare traditional approach, this method characterization processes is easy, and the material of test result before than traditional test lamination is more accurate, according to testing result, reasonably evaluation component in humidity compared with the operation risk in overall situation.
Accompanying drawing explanation
Fig. 1 is in prior art, the layer structural representation of solar photovoltaic assembly,
Wherein 110-notacoria, 120-back side EVA, 130-cell piece, 140-positive EVA, 150-toughened glass.
Embodiment
(1) solar components is from bottom to up according to the order of notacoria, back side EVA layer, cell piece, positive EVA layer, toughened glass layer, each assembly is stacked gradually (similar with accompanying drawing 1, the planar dimension of back side EVA layer and positive EVA layer is slightly larger than toughened glass layer), simultaneously on the interface on the interface between notacoria and back side EVA layer, between positive EVA layer and toughened glass layer, be mingled with the solid-state indicator anhydrous CuSO4 of meeting the variable color of water energy, and in laminating machine, press normal layer compression technology and process, obtain laminate
Wherein, the particle size of solid-state indicator anhydrous CuSO4 particle is 20-100um, and solid-state indicator is entrained in the center at interface, and guarantees that after laminating technology, solid-state indicator can not overflow from interlayer,
(2) by the cooling rear cut edge of the laminate obtaining in step (1), adopt aluminium frame, fitted seal glue or sealant tape are organized frame sealing, obtain solar components, and standing curing 36h;
(3) solar components obtaining in step (2) being put into hot and humid case (humidity is that 85%RH, temperature are 85 ℃), whether have metachromatism, if having, record the timing node of variable color if every sampling in 6 hours, observing solid-state indicator.
By the timing node of variable color, carry out the operation risk of evaluation component in the larger environment of high temperature, humidity.
The environment that can will work according to solar photovoltaic assembly, the parameters such as temperature in hot and humid case, humidity are set, by the method in the present invention, to the moisture vapor resistance of solar photovoltaic assembly, can detect, according to the variable color timing node detecting, assess the operation risk of this solar photovoltaic assembly in corresponding environment.
Claims (8)
- The moisture vapor resistance of solar photovoltaic assembly can a method of testing, it is characterized in that: concrete steps are,(1) according to the order of notacoria, back side EVA layer, cell piece, positive EVA layer, toughened glass layer, each assembly is stacked gradually, simultaneously on the interface on the interface between notacoria and back side EVA layer, between positive EVA layer and toughened glass layer, be mingled with the solid-state indicator of meeting the variable color of water energy, and by laminating technology, obtain laminate;(2) by the cooling rear cut edge of the laminate obtaining in step (1), adopt aluminium frame, fitted seal glue or sealant tape are organized frame sealing, obtain solar components, and standing solidifying;(3) solar components obtaining in step (2) is put into hot and humid case, or put into the water of 70-80 ℃, a minute different time is observed, and sees whether solid-state indicator has metachromatism, if having, records the timing node of variable color.
- 2. the method for testing of the moisture vapor resistance of solar photovoltaic assembly as claimed in claim 1 energy, is characterized in that: the solid-state indicator of the chance water energy variable color described in step (1) is that anhydrous cupric sulfate, anhydrous chlorides of rase are ferrous.
- The moisture vapor resistance of solar photovoltaic assembly as claimed in claim 1 can method of testing, it is characterized in that: the solid-state indicator of the chance water energy variable color described in step (1), be entrained in the center at interface, and guarantee that after laminating technology, solid-state indicator can not overflow from interlayer.
- 4. the method for testing of the moisture vapor resistance of solar photovoltaic assembly as claimed in claim 1 energy, is characterized in that: the back side EVA layer described in step (1) and the planar dimension of positive EVA layer are slightly larger than toughened glass layer.
- 5. the method for testing of the moisture vapor resistance of solar photovoltaic assembly as claimed in claim 1 energy, is characterized in that: the standing curing time described in step (2) is 36h.
- 6. the method for testing of the moisture vapor resistance of solar photovoltaic assembly as claimed in claim 1 energy, is characterized in that: in the hot and humid case described in step (3), humidity is that 85%RH, temperature are 85 ℃.
- The moisture vapor resistance of solar photovoltaic assembly as claimed in claim 1 can method of testing, it is characterized in that: in step (3), whether the solar components obtaining in step (2), every sampling in 6 hours, observing solid-state indicator has metachromatism if being put into after hot and humid case.
- The moisture vapor resistance of solar photovoltaic assembly as claimed in claim 1 can method of testing, it is characterized in that: in step (3), whether the solar components obtaining in step (2) is put into after the water of 70-80 ℃, every sampling in 48h hour, observing solid-state indicator has metachromatism.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107727551A (en) * | 2017-10-26 | 2018-02-23 | 英利能源（中国）有限公司 | Photovoltaic module foam tape permeability detection method |
| CN108548772A (en) * | 2018-03-16 | 2018-09-18 | 英利能源（中国）有限公司 | Photovoltaic component back plate test method |
| CN110346252A (en) * | 2019-07-18 | 2019-10-18 | 华北电力大学（保定） | A kind of visualization solar energy photovoltaic panel dust stratification experimental provision |
| AU2022201918B2 (en) * | 2020-11-02 | 2023-10-19 | Jinko Solar Co., Ltd. | Photovoltaic module |
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| CN107727551A (en) * | 2017-10-26 | 2018-02-23 | 英利能源（中国）有限公司 | Photovoltaic module foam tape permeability detection method |
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| AU2022201918B2 (en) * | 2020-11-02 | 2023-10-19 | Jinko Solar Co., Ltd. | Photovoltaic module |
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Application publication date: 20140903 |