CN108802496A - A kind of test method of photovoltaic module glued membrane volume resistivity - Google Patents
A kind of test method of photovoltaic module glued membrane volume resistivity Download PDFInfo
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- CN108802496A CN108802496A CN201810596124.9A CN201810596124A CN108802496A CN 108802496 A CN108802496 A CN 108802496A CN 201810596124 A CN201810596124 A CN 201810596124A CN 108802496 A CN108802496 A CN 108802496A
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- China
- Prior art keywords
- glued membrane
- glass
- photovoltaic module
- volume resistivity
- glass slide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000012528 membrane Substances 0.000 title claims abstract description 93
- 238000010998 test method Methods 0.000 title claims abstract description 14
- 239000011521 glass Substances 0.000 claims abstract description 92
- 239000003292 glue Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000010030 laminating Methods 0.000 claims description 8
- 238000003475 lamination Methods 0.000 claims description 8
- 239000004744 fabric Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 8
- 230000010287 polarization Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004049 embossing Methods 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000005329 float glass Substances 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photovoltaic Devices (AREA)
Abstract
A kind of test method of photovoltaic module glued membrane volume resistivity provided by the invention, includes the following steps：The first step prepares the glass slide of comparable size size and tested photovoltaic module glued membrane；Second step measures the resistance R of the glass slide prepared in the first stepGlass, glass slide thickness DGlassWith minimum electrode area SElectrode；Third walks, and the tested photovoltaic module glued membrane that the first step prepares is laminated on above-mentioned glass slide, glue film glass slide glass is obtained；4th step measures the resistance R of glue film glass slide glass in third stepAlwaysWith the thickness D of glue film glass slide glassAlways；The volume resistivity ρ of tested photovoltaic module glued membrane is calculated according to formula for 5th stepGlued membrane；By volume resistivity obtained by the above method significantly lower than naked glued membrane, it compares naked glued membrane and the volume resistivity of glued membrane can obtain when glued membrane is laminated to glass, the volume resistivity of naked glued membrane is more than glued membrane when glued membrane is laminated to glass, and in different Range of measuring temp, this rule is consistent, illustrates that the applicable temperature range of the test of the method is wider.
Description
Technical field
The invention belongs to photovoltaic cell fields, and in particular to a kind of test method of photovoltaic module glued membrane volume resistivity.
Background technology
PID is the power attenuation phenomenon that photovoltaic module occurs when system end bears system voltage.This problem is tight always
Ghost image rings the reliability of photovoltaic module.
In order to solve the problems, such as PID, the glued membrane (such as POE) of high volume resistivity is used in industry.This is because according to ohm
The volume resistivity of law, glued membrane is bigger, and system voltage is bigger in the pressure drop of glued membrane, and the pressure drop on battery is smaller, to make
Battery is not easy to be destroyed.
It can show that the volume resistivity of glued membrane is very crucial to component PID performances from the above analysis.How glue is accurately tested
The volume resistivity of film is a critical issue.Current test method is to be placed between two metal electrodes after being laminated naked glued membrane
Apply voltage to be tested, sees Fig. 1；Then volume resistivity is calculated according to formula (1)：
ρ=RS/d (1)
Wherein, ρ is volume resistivity, and R is resistance, S sample areas, d thickness of sample.
However for for photovoltaic module, it is higher that this test method can cause the volume resistivity of glued membrane to be tested.This be because
It is divided into three phases, stage one for the electrically conducting manner of glued membrane：Transient current, the electric current caused by electronics and atom polarization；Stage
Two：Polarization current, the electric current caused by polar group and dipole moment polarization；Electric current three：Leakage current, moveable ion, freely
The transference cell of electronics under the electric field, is shown in Fig. 2；It is leakage current wherein to influence maximum electric current to PID.
Conventional method can accurately test out transient current and polarization current, but test and leakage current is not allowed.This be because
To use the glass containing sodium to lead to the leakage of glued membrane during sodium can move to glued membrane under concentration gradient and electric field in photovoltaic module
Electricity becomes larger, that is to say, that volume resistivity is lower, and sees Fig. 3.
Invention content
The purpose of the present invention is to provide a kind of test methods of photovoltaic module glued membrane volume resistivity, solve existing
When testing the glued membrane of high volume resistivity, the volume resistivity of glued membrane is caused to test higher problem.
In order to achieve the above object, the technical solution adopted by the present invention is：
A kind of test method of photovoltaic module glued membrane volume resistivity provided by the invention, includes the following steps：
The first step prepares the glass slide of comparable size size and tested photovoltaic module glued membrane；
Second step measures the resistance R of the glass slide prepared in the first stepGlass, glass slide thickness DGlassAnd minimum
Electrode area SElectrode；
Third walks, and the tested photovoltaic module glued membrane that the first step prepares is laminated on above-mentioned glass slide, glued membrane glass is obtained
Glass slide glass；
4th step measures the resistance R of glue film glass slide glass in third stepAlwaysWith the thickness D of glue film glass slide glassAlways；
The volume resistivity ρ of tested photovoltaic module glued membrane is calculated according to formula for 5th stepGlued membrane：
Preferably, in third step, the tested photovoltaic module glued membrane that the first step prepares is laminated on above-mentioned glass slide
Specific method is：
First, tested photovoltaic module glued membrane is laid on the end face of glass slide；Then, on photovoltaic module glued membrane
Tetrafluoro cloth is covered, sample is obtained；Finally, the sample levels of gained are placed in laminating machine and are laminated, obtain required glue
Film glass slide glass.
Preferably, the technological parameter of laminating machine：Pumpdown time is 0.5-10min, lamination pressure 0.02-0.5Mpa；
Laminating temperature is 120 DEG C -165 DEG C, lamination times 5-30min.
Preferably, in the 4th step, when measuring the resistance of glue film glass slide glass using resistance meter, resistance meter is born
Pole connects glued membrane side, the anode of resistance meter connects glass side.
Compared with prior art, the beneficial effects of the invention are as follows：
A kind of test method of photovoltaic module glued membrane volume resistivity provided by the invention, glass slide is laminated to by glued membrane
On, the resistance and thickness before glass slide lamination are measured respectively, and then calculate the resistivity of glued membrane, obtained by the above method
The volume resistivity arrived compares naked glued membrane and the volume resistivity of glued membrane can when glued membrane is laminated to glass significantly lower than naked glued membrane
To obtain, the volume resistivity of naked glued membrane is more than glued membrane when glued membrane is laminated to glass, and in different Range of measuring temp
Interior, this rule is consistent, illustrates that the applicable temperature range of the test of the method is wider.
Description of the drawings
Fig. 1 is the instrumentation plan of existing naked film sample；
Fig. 2 is the influence schematic diagram that glass leaks electricity to glued membrane in existing measurement method；
Fig. 3 is glued membrane current source schematic diagram in existing measurement method；
When Fig. 4 is naked glued membrane and glued membrane+glass sample, the volume resistivity change schematic diagram of glued membrane under different temperatures；
Wherein, 1, low-field electrode 2, guard electrode 3, test sample 4, high-field electrode 5,6 glued membrane of glass.
Specific implementation mode
Below in conjunction with the accompanying drawings, the present invention is described in more detail.
A kind of test method of photovoltaic module glued membrane volume resistivity provided by the invention, includes the following steps：
The first step prepares the glass slide of comparable size size and tested photovoltaic module glued membrane；
Second step measures the resistance R of the glass slide prepared in the first stepGlass, glass slide thickness DGlassAnd minimum
Electrode area SElectrode；
Third walks, and the tested photovoltaic module glued membrane that the first step prepares is laminated on above-mentioned glass slide, glued membrane glass is obtained
Glass slide glass；
4th step measures the resistance R of glue film glass slide glass in third stepAlwaysWith the thickness D of glue film glass slide glassAlways；
The volume resistivity ρ of tested photovoltaic module glued membrane is calculated according to formula for 5th stepGlued membrane：
Preferably, glued membrane is laminated on photovoltaic glass, specifically：
First, glued membrane is cut into glass size size；Then, glued membrane is laid on glass, for float glass two
Face needs on embossing face pattern glass；Then, tetrafluoro cloth is covered on glued membrane；Finally, sample levels are placed into
In laminating machine, laminating parameters are：Pumpdown time between 0.5-10min, lamination pressure 0.02-0.5Mpa；Laminating temperature
Between 120 DEG C -165 DEG C, lamination times are between 5-30min.
Preferably, the resistance R of glass slide is measured using resistance meterGlassWhen, first, the positive and negative anodes of resistance meter
With glass slide when in succession indistinction, meanwhile, when glass be pattern glass when, need first use conducting resinl or other compliant conductives
Film is covered in embossing face so that electrode can be adequately exposed to glass embossing face；And float glass is directly tested；
The thickness that glass is tested out using vernier caliper or micrometer caliper, is defined as DGlass；It is surveyed using ruler or resistance
The instrument explanation for trying instrument, provides the area of minimum electrode, is defined as SElectrode。
Preferably, the resistance R of glue film glass slide glass is measured using resistance meterAlwaysWhen, the positive and negative anodes of resistance meter with
Glue film glass slide glass requires when in succession, wherein the cathode of resistance meter is connected on glued membrane, the anode of resistance meter
It is connected on glass；This is because positive metal ions are present in glass, and when only glued membrane connects cathode, the metal ion in glass
It can be moved in glued membrane from glass, to measure the resistance of glued membrane, i.e.,：
RAlways=RGlued membrane+RGlass (1)
The thickness that sample is tested out using vernier caliper or micrometer caliper, is defined as DAlways, thickness is glued membrane and glass
Overall thickness, i.e.,：
DAlways=DGlued membrane+DGlass (2)。
The volume resistivity ρ of glued membrane is calculated according to the volume resistivity formula (3) of glued membrane：
Wherein, ρ is volume resistivity, and unit is Ω mm；R is resistance, unit Ω；S is electrode area, takes positive and negative electrode
In area minimum value, unit mm2；D is thickness of sample, unit mm.
The submission electricalresistivityρ it is found that tested photovoltaic module glued membrane is derived by formula (1), (2) and formula (3)Glued membraneCalculating
Formula such as (4)：
Embodiment
By volume resistivity obtained by the above method significantly lower than naked glued membrane, as shown in figure 4, comparing naked glued membrane and glue
The volume resistivity of glued membrane can obtain when film layer is pressed onto glass, when the volume resistivity of naked glued membrane is laminated to glass more than glued membrane
Glued membrane, and in different Range of measuring temp, this rule is consistent, illustrates the applicable temperature range of the test of the method
It is relatively wide.
Claims (4)
1. a kind of test method of photovoltaic module glued membrane volume resistivity, which is characterized in that include the following steps：
The first step prepares the glass slide of comparable size size and tested photovoltaic module glued membrane；
Second step measures the resistance R of the glass slide prepared in the first stepGlass, glass slide thickness DGlassAnd minimum electrode
Area SElectrode；
Third walks, and the tested photovoltaic module glued membrane that the first step prepares is laminated on above-mentioned glass slide, obtains glue film glass load
Piece；
4th step measures the resistance R of glue film glass slide glass in third stepAlwaysWith the thickness D of glue film glass slide glassAlways；
The volume resistivity ρ of tested photovoltaic module glued membrane is calculated according to formula for 5th stepGlued membrane：
2. a kind of test method of photovoltaic module glued membrane volume resistivity according to claim 1, which is characterized in that third
In step, it is by the specific method that the tested photovoltaic module glued membrane that the first step prepares is laminated on above-mentioned glass slide：
First, tested photovoltaic module glued membrane is laid on the end face of glass slide；Then, it is covered on photovoltaic module glued membrane
Tetrafluoro cloth, obtains sample；Finally, the sample levels of gained are placed in laminating machine and are laminated, obtain required glued membrane glass
Glass slide glass.
3. a kind of test method of photovoltaic module glued membrane volume resistivity according to claim 2, which is characterized in that lamination
The technological parameter of machine：Pumpdown time is 0.5-10min, lamination pressure 0.02-0.5Mpa；Laminating temperature is 120 DEG C -165
DEG C, lamination times 5-30min.
4. a kind of test method of photovoltaic module glued membrane volume resistivity according to claim 2, which is characterized in that the 4th
In step, when measuring the resistance of glue film glass slide glass using resistance meter, the cathode of resistance meter connects glued membrane side, resistance is surveyed
The anode of examination instrument connects glass side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810596124.9A CN108802496A (en) | 2018-06-11 | 2018-06-11 | A kind of test method of photovoltaic module glued membrane volume resistivity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810596124.9A CN108802496A (en) | 2018-06-11 | 2018-06-11 | A kind of test method of photovoltaic module glued membrane volume resistivity |
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| Publication Number | Publication Date |
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ID=64088266
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|---|---|---|---|
| CN201810596124.9A Pending CN108802496A (en) | 2018-06-11 | 2018-06-11 | A kind of test method of photovoltaic module glued membrane volume resistivity |
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Application publication date: 20181113 |
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