CN107907509A - A kind of method for examining solar cell package material EVA light transmittances - Google Patents
A kind of method for examining solar cell package material EVA light transmittances Download PDFInfo
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- CN107907509A CN107907509A CN201711194756.4A CN201711194756A CN107907509A CN 107907509 A CN107907509 A CN 107907509A CN 201711194756 A CN201711194756 A CN 201711194756A CN 107907509 A CN107907509 A CN 107907509A
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- sample survey
- solar cell
- double vacuum
- examining
- eva
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/59—Transmissivity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
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- General Health & Medical Sciences (AREA)
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Abstract
The invention discloses a kind of method for examining solar cell package material EVA light transmittances, it comprises the following steps：Step 1: 1 EVA adhesive film and 2 tempered glass are taken to carry out overlapping and become sample survey；Step 2: sample survey is put into the lower room of double vacuum laminators and is vacuumized, reheat, upper chamber is then cancelled into vacuum and is kept for a period of time；Step 3: double vacuum laminators are cooled down, then vacuum is cancelled into lower room；Step 4: the sample survey is put into solidification case, crosslinking curing is carried out, then takes out and is cooled to room temperature；Step 5: according to《Transparent plastic light transmittance and haze test method》GB2410 80 tests light transmittance；The detecting step of the present invention can effectively avoid EVA adhesive film from producing bubble in set-up procedure is detected, and ensure the accuracy of detection, while ensure that the various performances of EVA adhesive film, and the program may be used on solar cell module encapsulating material detection field.
Description
Technical field
The present invention relates to field of solar energy, particularly a kind of method for examining solar cell package material EVA light transmittances.
Background technology
Solar cell package material is usually to use EVA adhesive film, it is heated in the encapsulation process of battery, and it is anti-to produce crosslinking
Should, glued membrane after curing has excellent light transmittance, adhesive strength, heat endurance, air-tightness, environmental stress crack resistance, resistance to
Hou Xing, corrosion resistance and electrical property etc., thus it is subject to large-scale use.China's solar cell quantum of output about occupies the whole world
60% or so share, calculates, Chinese solar cell quantum of output is about 20GW or so, corresponding EVA according to global shipment amount 35GW
Demand is about 2.8 hundred million square meters, and wherein largest domestic EVA adhesive film manufacturer Foster output is about 1.58 hundred million square meters, it is contemplated that state
The EVA adhesive film that still there are 100,000,000 square meters in inner assembly manufacturing enterprise depends on import, occupies about 30% ratio.
Currently, the EVA adhesive film for solar cell package needs to be maintained at higher light transmittance, but the country is to printing opacity
The inadequate specification of detection method of rate, is easy to cause EVA adhesive film and produces bubble, cause light transmittance that domestic EVA adhesive film detects with
The EVA adhesive film of import is compared, and actual light transmittance is much lower, causes domestic EVA adhesive film often to be returned goods when exporting by foreign countries.Therefore
The light transmittance detection to EVA adhesive film is needed to carry out specification, to improve accuracy.
The content of the invention
In view of the above problems, it is necessary to which a kind of technical solution that can be tackled is provided.
It is an object of the invention to provide a kind of method for examining solar cell package material EVA light transmittances, effectively solution
The problem of light transmittance of certainly domestic detection EVA adhesive film is inaccurate.
What the present invention was realized in：
A kind of method for examining solar cell package material EVA light transmittances, it comprises the following steps：
Step 1: take 1 EVA adhesive film and 2 tempered glass, EVA adhesive film is put into and carries out overlapping between 2 tempered glass and becomes
Sample survey；
Step 2: the sample survey is put into the lower room of double vacuum laminators, first by the upper of double vacuum laminators
Room and lower room vacuumize, and reheat the sample survey, and the upper chamber of double vacuum laminators then is cancelled vacuum simultaneously
Kept for a period of time；
Step 3: the temperature of double vacuum laminators is cooled to less than 50 DEG C, then by double vacuum laminators
Cancel vacuum in lower room；
Step 4: the sample survey is removed and placed in solidification case out of described double vacuum laminators, described in setting
Solidification case solidification temperature and crosslinking curing is carried out after the time, then take out the sample survey and be cooled to room temperature；
Step 5: according to《Transparent plastic light transmittance and haze test method》GB2410-80 examines the sample survey
Test light transmittance.
As the further explanation of the present invention, the EVA adhesive film size is 30mm × 30mm, described 2 tempering glass
Glass size is 40mm × 40mm × 1mm.
As the further explanation of the present invention, the sample survey is put into after double vacuum laminators and needs to be heated to 100 ~
120℃。
As the present invention further explanation, double vacuum laminators upper chamber cancellation vacuum and keep 5min with
On.
As the further explanation of the present invention, the solidification temperature of the solidification case is arranged to 130 ~ 180 DEG C, hardening time
For 30 ~ 50min.
The Zhen Kong Du≤0.09Mpa extracted as the further explanation of the present invention, double vacuum laminators.
The beneficial effect that the present invention possesses：
The detecting step of the present invention can effectively avoid EVA adhesive film from producing bubble in detection prepares, and ensure the accuracy of detection, together
When ensure that the various performances of EVA adhesive film.
Embodiment
With reference to embodiment, the present invention is further described, but protection scope of the present invention is not limited to following implementation
Example.
Embodiment 1：
A kind of method for examining solar cell package material EVA light transmittances, it comprises the following steps：
Step 1: take 1 EVA adhesive film and 2 tempered glass, EVA adhesive film is put into and carries out overlapping between 2 tempered glass and becomes
Sample survey；
Step 2: the sample survey is put into the lower room of double vacuum laminators, first by the upper of double vacuum laminators
Room and lower room vacuumize, and reheat the sample survey, and the upper chamber of double vacuum laminators then is cancelled vacuum simultaneously
Kept for a period of time；It is using the beneficial effect of this step：First, produced in the air and lamination process in discharge encapsulating material gap
Raw gas, eliminates the bubble in component；Second, causing a pressure differential inside double vacuum laminators, produce required for being laminated
Pressure.
Step 3: the temperature of double vacuum laminators is cooled to less than 48 DEG C, then by double vacuum laminations
Cancel vacuum in the lower room of device；
Step 4: the sample survey is removed and placed in solidification case out of described double vacuum laminators, described in setting
Solidification case solidification temperature and crosslinking curing is carried out after the time, then take out the sample survey and be cooled to room temperature；
Step 5: according to《Transparent plastic light transmittance and haze test method》GB2410-80 examines the sample survey
Test light transmittance.
As the further explanation of the present embodiment, the EVA adhesive film size is 30mm × 30mm, described 2 tempering
Glass size is 40mm × 40mm × 1mm.The present embodiment uses the size, not only can guarantee that heat is quickly transmitted to EVA and subtracts
Few heating time, additionally it is possible to effectively avoid causing the survival gas of its internal voids to be not easy to take away because sample survey is excessive.
As the further explanation of the present embodiment, the sample survey needs to be heated to 100 after being put into double vacuum laminators
℃.The present embodiment, which is chosen, to be heated in the temperature, effectively peroxide can be prevented to be decomposed to form bubble.
As the further explanation of the present embodiment, the upper chamber of double vacuum laminators cancels vacuum and keeps 6min.
The macromolecule general structure formed after being crosslinked due to EVA is cancelled the upper chamber of double vacuum laminators in the present embodiment than more loose
Being vacuum formed has lower room one atmospheric pressure, and the presence of the atmospheric pressure can make EVA glued membranes finer and close after curing, tool
There is more preferable mechanical property；The bonding force of EVA and other materials can also be strengthened at the same time.
As the further explanation of the present embodiment, the solidification temperature of the solidification case is arranged to 130 DEG C, and hardening time is
30min.The present embodiment uses such parameter, and the completion curing required time is shorter, and solidification effect is preferable.
As the further explanation of the present embodiment, the vacuum that double vacuum laminators extract is 0.08Mpa.This reality
Apply example and use vacuum parameter so, can ensure that the air between component internal gap is extracted, avoid causing EVA adhesive film to produce
Anger bubble, influences the accuracy of detection.
Embodiment 2：
A kind of method for examining solar cell package material EVA light transmittances, it comprises the following steps：
Step 1: take 1 EVA adhesive film and 2 tempered glass, EVA adhesive film is put into and carries out overlapping between 2 tempered glass and becomes
Sample survey；
Step 2: the sample survey is put into the lower room of double vacuum laminators, first by the upper of double vacuum laminators
Room and lower room vacuumize, and reheat the sample survey, and the upper chamber of double vacuum laminators then is cancelled vacuum simultaneously
Kept for a period of time；It is using the beneficial effect of this step：First, produced in the air and lamination process in discharge encapsulating material gap
Raw gas, eliminates the bubble in component；Second, causing a pressure differential inside double vacuum laminators, produce required for being laminated
Pressure.
Step 3: the temperature of double vacuum laminators is cooled to less than 45 DEG C, then by double vacuum laminations
Cancel vacuum in the lower room of device；
Step 4: the sample survey is removed and placed in solidification case out of described double vacuum laminators, described in setting
Solidification case solidification temperature and crosslinking curing is carried out after the time, then take out the sample survey and be cooled to room temperature；
Step 5: according to《Transparent plastic light transmittance and haze test method》GB2410-80 examines the sample survey
Test light transmittance.
As the further explanation of the present embodiment, the EVA adhesive film size is 30mm × 30mm, described 2 tempering
Glass size is 40mm × 40mm × 1mm.The present embodiment uses the size, not only can guarantee that heat is quickly transmitted to EVA and subtracts
Few heating time, additionally it is possible to effectively avoid causing the survival gas of its internal voids to be not easy to take away because sample survey is excessive.
As the further explanation of the present embodiment, the sample survey needs to be heated to 110 after being put into double vacuum laminators
℃.The present embodiment, which is chosen, to be heated in the temperature, effectively peroxide can be prevented to be decomposed to form bubble.
As the further explanation of the present embodiment, the upper chambers of double vacuum laminators cancel vacuum and keep 7min with
On.The macromolecule general structure formed after being crosslinked due to EVA is taken the upper chamber of double vacuum laminators in the present embodiment than more loose
Disappearing to be vacuum formed and have an atmospheric pressure to lower room, the presence of the atmospheric pressure can make EVA glued membranes finer and close after curing,
With more preferable mechanical property；The bonding force of EVA and other materials can also be strengthened at the same time.
As the further explanation of the present embodiment, the solidification temperature of the solidification case is arranged to 155 DEG C, and hardening time is
40min.The present embodiment uses such parameter, and the completion curing required time is shorter, and solidification effect is preferable.
As the further explanation of the present embodiment, the vacuum that double vacuum laminators extract is 0.07Mpa.This reality
Apply example and use vacuum parameter so, can ensure that the air between component internal gap is extracted, avoid causing EVA adhesive film to produce
Anger bubble, influences the accuracy of detection.
Embodiment 3：
A kind of method for examining solar cell package material EVA light transmittances, it comprises the following steps：
Step 1: take 1 EVA adhesive film and 2 tempered glass, EVA adhesive film is put into and carries out overlapping between 2 tempered glass and becomes
Sample survey；
Step 2: the sample survey is put into the lower room of double vacuum laminators, first by the upper of double vacuum laminators
Room and lower room vacuumize, and reheat the sample survey, and the upper chamber of double vacuum laminators then is cancelled vacuum simultaneously
Kept for a period of time；It is using the beneficial effect of this step：First, produced in the air and lamination process in discharge encapsulating material gap
Raw gas, eliminates the bubble in component；Second, causing a pressure differential inside double vacuum laminators, produce required for being laminated
Pressure.
Step 3: the temperature of double vacuum laminators is cooled to 40 DEG C, then by double vacuum laminators
Cancel vacuum in lower room；
Step 4: the sample survey is removed and placed in solidification case out of described double vacuum laminators, described in setting
Solidification case solidification temperature and crosslinking curing is carried out after the time, then take out the sample survey and be cooled to room temperature；
Step 5: according to《Transparent plastic light transmittance and haze test method》GB2410-80 examines the sample survey
Test light transmittance.
As the further explanation of the present embodiment, the EVA adhesive film size is 30mm × 30mm, described 2 tempering
Glass size is 40mm × 40mm × 1mm.The present embodiment uses the size, not only can guarantee that heat is quickly transmitted to EVA and subtracts
Few heating time, additionally it is possible to effectively avoid causing the survival gas of its internal voids to be not easy to take away because sample survey is excessive.
As the further explanation of the present embodiment, the sample survey needs to be heated to 120 after being put into double vacuum laminators
℃.The present embodiment, which is chosen, to be heated in the temperature, effectively peroxide can be prevented to be decomposed to form bubble.
As the further explanation of the present embodiment, the upper chamber of double vacuum laminators cancels vacuum and keeps 6min.
The macromolecule general structure formed after being crosslinked due to EVA is cancelled the upper chamber of double vacuum laminators in the present embodiment than more loose
Being vacuum formed has lower room one atmospheric pressure, and the presence of the atmospheric pressure can make EVA glued membranes finer and close after curing, tool
There is more preferable mechanical property；The bonding force of EVA and other materials can also be strengthened at the same time.
As the further explanation of the present embodiment, the solidification temperature of the solidification case is arranged to 180 DEG C, and hardening time is
50min.The present embodiment uses such parameter, and the completion curing required time is shorter, and solidification effect is preferable.
As the further explanation of the present embodiment, the vacuum that double vacuum laminators extract is 0.06Mpa.This reality
Apply example and use vacuum parameter so, can ensure that the air between component internal gap is extracted, avoid causing EVA adhesive film to produce
Anger bubble, influences the accuracy of detection.
The program may be used on solar cell module encapsulating material detection field.
Finally it should be noted that：The foregoing is merely the preferred embodiment that the present invention is applied to field of solar energy, sheet
Invention can also equally be used in other near fields, therefore the protection domain that above-described embodiment is not intended to limit the invention, to the greatest extent
Pipe is described in detail the present invention with reference to above-described embodiment, and for those skilled in the art, it still can be with
Modify to the technical solution described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on, should be included in the guarantor of the present invention
Within the scope of shield.
Claims (6)
- A kind of 1. method for examining solar cell package material EVA light transmittances, it is characterised in that comprise the following steps：Step 1: take 1 EVA adhesive film and 2 tempered glass, EVA adhesive film is put into and carries out overlapping between 2 tempered glass and becomes Sample survey；Step 2: the sample survey is put into the lower room of double vacuum laminators, first by the upper of double vacuum laminators Room and lower room vacuumize, and reheat the sample survey, and the upper chamber of double vacuum laminators then is cancelled vacuum simultaneously Kept for a period of time；Step 3: the temperature of double vacuum laminators is cooled to less than 50 DEG C, then by double vacuum laminators Cancel vacuum in lower room；Step 4: the sample survey is removed and placed in solidification case out of described double vacuum laminators, described in setting Solidification case solidification temperature and crosslinking curing is carried out after the time, then take out the sample survey and be cooled to room temperature；Step 5: according to《Transparent plastic light transmittance and haze test method》GB2410-80 examines the sample survey Test light transmittance.
- 2. a kind of method for examining solar cell package material EVA light transmittances according to claim 1, its feature exist In the EVA adhesive film size is 30mm × 30mm, and described 2 tempered glass sizes are 40mm × 40mm × 1mm.
- 3. a kind of method for examining solar cell package material EVA light transmittances according to claim 1, its feature exist In the sample survey needs to be heated to 100 ~ 120 DEG C after being put into double vacuum laminators.
- 4. a kind of method for examining solar cell package material EVA light transmittances according to claim 1, its feature exist In the upper chamber of double vacuum laminators cancels vacuum and keeps more than 5min.
- 5. a kind of method for examining solar cell package material EVA light transmittances according to claim 1, its feature exist In the solidification temperature of the solidification case is arranged to 130 ~ 180 DEG C, and hardening time is 30 ~ 50min.
- 6. a kind of method for examining solar cell package material EVA light transmittances according to claim 1, its feature exist In Zhen Kong Du≤0.09Mpa that double vacuum laminators extract.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711194756.4A CN107907509A (en) | 2017-11-24 | 2017-11-24 | A kind of method for examining solar cell package material EVA light transmittances |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711194756.4A CN107907509A (en) | 2017-11-24 | 2017-11-24 | A kind of method for examining solar cell package material EVA light transmittances |
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| CN107907509A true CN107907509A (en) | 2018-04-13 |
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| CN201711194756.4A Withdrawn CN107907509A (en) | 2017-11-24 | 2017-11-24 | A kind of method for examining solar cell package material EVA light transmittances |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112666065A (en) * | 2020-11-20 | 2021-04-16 | 中国建材检验认证集团枣庄有限公司 | Method for simulating environmental damage by using photovoltaic glass plate packaging material EVA (ethylene vinyl acetate) adhesive film |
| CN114561064A (en) * | 2022-03-21 | 2022-05-31 | 中节能太阳能科技（镇江）有限公司 | Photovoltaic module with high use reliability and easy recovery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007332198A (en) * | 2006-06-13 | 2007-12-27 | Teijin Dupont Films Japan Ltd | Easily adhesive film for protecting solar battery and solar battery-protecting film using the same |
| CN102323243A (en) * | 2011-06-17 | 2012-01-18 | 常州天合光能有限公司 | Structure and method for testing light transmittance of laminated EVA (Ethylene Vinyl Acetate) film used for photovoltaic assembly |
| CN104900753A (en) * | 2015-04-14 | 2015-09-09 | 四川和鼎环保工程有限责任公司 | EVA adhesive film packaging technology |
| CN106098837A (en) * | 2016-06-06 | 2016-11-09 | 正信光电科技股份有限公司 | Photovoltaic module production technology |
-
2017
- 2017-11-24 CN CN201711194756.4A patent/CN107907509A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007332198A (en) * | 2006-06-13 | 2007-12-27 | Teijin Dupont Films Japan Ltd | Easily adhesive film for protecting solar battery and solar battery-protecting film using the same |
| CN102323243A (en) * | 2011-06-17 | 2012-01-18 | 常州天合光能有限公司 | Structure and method for testing light transmittance of laminated EVA (Ethylene Vinyl Acetate) film used for photovoltaic assembly |
| CN104900753A (en) * | 2015-04-14 | 2015-09-09 | 四川和鼎环保工程有限责任公司 | EVA adhesive film packaging technology |
| CN106098837A (en) * | 2016-06-06 | 2016-11-09 | 正信光电科技股份有限公司 | Photovoltaic module production technology |
Non-Patent Citations (3)
| Title |
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| 何宝华: "太阳能电池组件中玻璃与EVA透光率测试方法研究", 《上海航天》 * |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112666065A (en) * | 2020-11-20 | 2021-04-16 | 中国建材检验认证集团枣庄有限公司 | Method for simulating environmental damage by using photovoltaic glass plate packaging material EVA (ethylene vinyl acetate) adhesive film |
| CN114561064A (en) * | 2022-03-21 | 2022-05-31 | 中节能太阳能科技（镇江）有限公司 | Photovoltaic module with high use reliability and easy recovery |
| CN114561064B (en) * | 2022-03-21 | 2024-04-30 | 中节能太阳能科技（镇江）有限公司 | Photovoltaic module with high use reliability and easy recovery |
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