CN207909890U - A kind of photovoltaic back - Google Patents
A kind of photovoltaic back Download PDFInfo
- Publication number
- CN207909890U CN207909890U CN201721163783.0U CN201721163783U CN207909890U CN 207909890 U CN207909890 U CN 207909890U CN 201721163783 U CN201721163783 U CN 201721163783U CN 207909890 U CN207909890 U CN 207909890U
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- CN
- China
- Prior art keywords
- photovoltaic back
- basement membrane
- layer
- fiber cloth
- fluorocarbon resin
- 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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- 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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- Laminated Bodies (AREA)
Abstract
The utility model provides a kind of photovoltaic back, and the photovoltaic back includes basement membrane, is bonded in the outer layer of the basement membrane other side positioned at the internal layer of basement membrane side and by gluing oxidant layer, wherein the outer layer, which is fiber cloth, enhances fluorocarbon resin impregnated membranes.Outer layer of the fluorocarbon resin impregnated membranes that fiber cloth enhances as backboard is used in the photovoltaic back of the utility model, solves the problems, such as that backboard made of backboard and fluorocarbon coating made of pvdf membrane exists, and can become the substituted type backboard of TPT backboards, TPE backboards.
Description
Technical field
The utility model is related to solar-energy photo-voltaic cell technical field, more particularly to a kind of novel photovoltaic back.
Background technology
The energy is the lifeblood of economic development, and traditional fossil energy always has exhausted one day.Various countries carry out one after another it is various can be again
The research and development of the raw energy.Solar energy because of clean environment firendly, using convenient, and pursued energetically by various countries, photovoltaic
Power generation is even more in full flourish in the whole world.However, as photovoltaic generation unit solar battery sheet can not it is exposed in air,
Need to be packaged into photovoltaic module to be used for a long time outdoors.Common photovoltaic component encapsulating mode is：Glass/EVA adhesive film/electricity
Pond piece/EVA adhesive film/photovoltaic back.In this packaged type, photovoltaic back role is insulation, mechanical support, barrier
Steam, common back board structure are polyvinyl fluoride (PVF)/adhesive/PET/ adhesive/PVF (TPT backboards), PVF/ gluings
Agent/PET/ adhesive/EVA (TPE backboards) etc., that is to say, that the outside of photovoltaic back is mostly PVF films, but PVF films are shut out for the U.S.
Company of nation simple monopoly, not only production capacity is limited, supplies by management and control, delivery date is also very long, endures industry to the fullest extent and denounces.Therefore, industry one
Directly finding new alternative materials making photovoltaic back.
Kynoar (PVDF) film volume production is used for backboard by French Arkema companies, has also captured a part quickly
Market.The market of pvdf membrane is also added in Japan Electric chemistry, South Korea SKC, Hangzhou China good fortune film, Fo Su groups etc. one after another, however
PVDF needs that polymethyl methacrylate (PMMA) plasticizer is added, this will lead to it since it has the defect for being not easy to form a film
Weather resistance declines, and cannot effectively act as the effect of uvioresistant.Furthermore pvdf membrane is more difficult to accomplish biaxial tension, in the side TD
To fracture elongation it is extremely low, the phenomenon that occurring Cracking Failure is found during component outdoor aging.
In addition, also there is the company of Japan, Italy to use resistance to ultraviolet polyester PET as the weathering protective layer on the outside of backboard,
But it is last to be also proved to be easy embrittlement and cracking.
Back board structure --- the fluorine of weathering protective layer is formed in polyester film surface in addition, also having and directly fluorocarbon coating forming a film
Carbon coating/PET/ fluorocarbon coatings, but fluorocarbon coating layer is easy dusting failure in air.
To sum up, a kind of novel fluorine-containing weather-proof protective film that can be used for photovoltaic back is needed exist for, PVF can be substituted
Film, and can solve the problems, such as that above-mentioned pvdf membrane and fluorocarbon coating layer exist.
Utility model content
The utility model is intended to provide a kind of novel photovoltaic back.Fluorine-containing weather-proof protective film used in the backboard is not
Traditional PVF films, pvdf membrane or fluorocarbon coating layer etc., but a kind of fiber cloth enhancing fluorocarbon resin impregnated membranes (have composite junction
The film of structure), obtained photovoltaic back can solve the problems, such as that backboard made of backboard and fluorocarbon coating made of pvdf membrane exists,
The substituted type backboard of TPT backboards, TPE backboards can be become.
To achieve the above object, the utility model provides a kind of photovoltaic back, and the photovoltaic back includes basement membrane, is located at base
The internal layer of film side and the outer layer that the basement membrane other side is bonded in by gluing oxidant layer, wherein the outer layer, which is fiber cloth, enhances fluorine carbon
Resin impregnated membranes.
Preferably, the internal layer of photovoltaic back is the fiber cloth enhancing fluorine carbon that the basement membrane side is bonded in by gluing oxidant layer
Resin impregnated membranes；Or to be bonded in the Weather-proof film of the basement membrane side by gluing oxidant layer；Or it is described to be directly coated on
The fluorocarbon coating layer of basement membrane side.
Preferably, the thickness of fiber cloth enhancing fluorocarbon resin impregnated membranes is 20-75 μm.
Preferably, the thickness of basement membrane is 125-300 μm.
Preferably, fiber cloth enhancing fluorocarbon resin impregnated membranes are by repeatedly impregnating fluorocarbon resin with fiber cloth and by be sintered
The composite membrane obtained has the structure for the fluorocarbon resin that there is sintering in the hole of fiber cloth and surface.
The fluorocarbon resin impregnated membranes that the utility model is enhanced in photovoltaic back using fiber cloth substitute in conventional backing plate
The weather-proof protection materials such as PVF films, pvdf membrane and fluorocarbon coating layer.Since the fluorocarbon resin impregnated membranes of fiber cloth enhancing have by fibre
The composite construction that Wei Bu and the fluorocarbon resin for the sintering for being present in fiber cloth hole and surface are constituted, with excellent weatherability
Can, it be less prone to Cracking Failure problem (that is, solving the problems, such as that pvdf membrane exists), and overcomes fluorocarbon coating layer and be easy powder
The shortcomings that changing failure the problem of (be not present fluorocarbon coating dusting delamination), by its photovoltaic back obtained can become TPT backboards,
The substituted type backboard of TPE backboards.
Description of the drawings
Fig. 1 is a kind of representative configurations schematic diagram according to the photovoltaic back of the utility model；
Fig. 2 is another representative configurations schematic diagram according to the photovoltaic back of the utility model；
Fig. 3 is another representative configurations schematic diagram according to the photovoltaic back of the utility model；
Specific implementation mode
The utility model is described in detail below.
The photovoltaic back of the utility model includes basement membrane, is bonded in base positioned at the internal layer of basement membrane side and by gluing oxidant layer
The outer layer of the film other side, wherein outer layer, which are fiber cloth, enhances fluorocarbon resin impregnated membranes.
In the utility model, the outer layer of photovoltaic back refers to when carrying out photovoltaic component encapsulating, and photovoltaic back is located at component
That outermost layer.
The outer layer of the photovoltaic back of the utility model, which is fiber cloth, enhances fluorocarbon resin impregnated membranes, wherein fiber cloth can be with
It is the porous reinforcing fiber cloth such as glass fabric, carbon cloth；Fluorocarbon resin is fluorocarbon resin as known in the art, such as
Polytetrafluoroethylene (PTFE) (PTFE) etc..
Then fiber cloth enhancing fluorocarbon resin impregnated membranes can be done by the way that fiber cloth to be impregnated in fluorocarbon resin dispersion liquid
It is dry, high temperature sintering and obtain.Fluorocarbon resin dispersion liquid can be commercially available product, for example, the PTFE of Daikin company production
Lotion (model：D210C, solid content 60%) etc..Drying after dipping is used to remove the solvent in fluorocarbon resin dispersion liquid, leads to
Often, which can carry out at 100 DEG C, and the time can be 1min to 60min.The high temperature sintering of fluorocarbon resin can be
300-500 DEG C, such as carried out at 400 DEG C.Sintering time can be 1min to 60min.In order to ensure to adhere to foot in fiber cloth
Above-mentioned dipping-drying-sintering step can be repeated as many times by the fluorocarbon resin enough measured, such as 2-5 times.
The obtained fiber cloth enhancing fluorocarbon resin impregnated membranes have by fiber cloth and are present in fiber cloth hole and table
The composite construction that the fluorocarbon resin of the sintering in face is constituted, this close composite construction, which assigns fiber cloth, enhances fluorocarbon resin impregnated membranes
Fabulous intensity and not easy to crack/pulverability.
The thickness that fiber cloth enhances fluorocarbon resin impregnated membranes can be 20-75 μm, such as 20-50 μm.
In the utility model, fiber cloth enhancing fluorocarbon resin impregnated membranes are bonded in the outside of basement membrane by gluing oxidant layer.Base
Film can be polyester (PET) film or poly- naphthalene ester (PEN) film.The thickness of basement membrane can be 125-300 μm.Adhesive can be poly-
The dry glue thickness of one or more of ester, polyurethane, epoxy resin, polyacrylate etc., gluing oxidant layer can be 5-50 μm.
The known structure in photovoltaic back may be used on the inside of basement membrane, for example, the Weather-proof film bonded by adhesive layer,
Or it is directly coated on the fluorocarbon coating layer on one side surface of basement membrane, the structure as outside can also be used, that is, pass through glue
Adhesive layer is bonded in the fiber cloth enhancing fluorocarbon resin impregnated membranes of basement membrane.Herein, Weather-proof film includes polyvinyl fluoride (PVF) film, gathers
Vinylidene (PVDF) film, polyester (PET) film, ethylene-tetrafluoroethylene copolymer (ETFE) film, polyethylene (PE) film, polypropylene
(PP) film, polyolefin (PO) film etc..The thickness of Weather-proof film can be 20-75 μm.
Fig. 1-3 shows the representative configurations schematic diagram of several photovoltaic backs according to the present utility model.
With reference to figure 1, a kind of representative configurations of the photovoltaic back of the utility model include：Basement membrane 1 passes through gluing oxidant layer 2
It is bonded in the fiber cloth enhancing fluorocarbon resin impregnated membranes 3 of 1 both sides of basement membrane respectively.
With reference to figure 2, another representative configurations of the photovoltaic back of the utility model include：Basement membrane 1 passes through gluing oxidant layer
2 are bonded in the fiber cloth enhancing fluorocarbon resin impregnated membranes 3 in 1 outside of basement membrane, and are bonded in 1 inside of basement membrane by gluing oxidant layer 2
Weather-proof film 4.
With reference to figure 3, another representative configurations of the photovoltaic back of the utility model include：Basement membrane 1 passes through gluing oxidant layer
2 are bonded in the fiber cloth enhancing fluorocarbon resin impregnated membranes 3 in 1 outside of basement membrane, and the fluorocarbon coating layer 5 coated on 1 inside of basement membrane.
The technical solution of the utility model is illustrated below by embodiment.These embodiments are only exemplary,
And it should not be construed as a limitation of the present invention.
Embodiment 1
The manufacturing process of photovoltaic back is as follows：Taking PTFE emulsion first, (Daikin company produces, model：D210C, Gu
Content 60%), 1027 glass fabrics are immersed in PTFE emulsion, dry 10min, is then sintered at 400 DEG C at 100 DEG C
10min is again dipped into PTFE emulsion, and 10min is dried at 100 DEG C and is sintered 10min at 400 DEG C, repeats this process 3
It is secondary, you can the fluorocarbon resin impregnated membranes of glass fabric enhancing are obtained,
Thickness is 38 μm.The impregnated membranes are subjected to surface corona or corona treatment, it will according to operation instruction
A3302EEA and CR865 (the two is the production of DOW Chemicals companies) are allocated, and polyurethane adhesive are obtained, by glue
Stick be coated on PET basement membranes (Sichuan Dongcai Technology Group Co., Ltd produce,
Model：DS10,250 μm of thickness) surface, it dries except the fluorocarbon resin leaching after solvent, enhanced with above-mentioned glass fabric
The process face of stain film is compound.Then it in another surface coated with adhesive of PET basement membranes, dries after removing solvent, with above-mentioned glass fibre
The process face of the fluorocarbon resin impregnated membranes of cloth enhancing is compound, can be obtained photovoltaic back after toasting 120h in 50 DEG C.
Embodiment 2
According to the method in embodiment 1, the fluorocarbon resin impregnated membranes that the glass fabric that thickness is 38 μm enhances are made.It will
The impregnated membranes carry out surface corona or corona treatment allocates A3302EEA and CR865 according to operation instruction, obtain
Polyurethane adhesive, adhesive is coated on PET basement membranes, and (Sichuan Dongcai Technology Group Co., Ltd produces, model：
DS10,250 μm of thickness) surface, it dries except after solvent, the process face of the fluorocarbon resin impregnated membranes enhanced with above-mentioned glass fabric is multiple
It closes.Then it in another surface coated with adhesive of PET basement membranes, dries except after solvent, (E.I.Du Pont Company produces, model with PVF films
PV2001,38 μm of thickness) it is compound, it can be obtained photovoltaic back after toasting 120h in 50 DEG C.
Embodiment 3
According to the method in embodiment 1, the fluorocarbon resin impregnated membranes that the glass fabric that thickness is 30 μm enhances are made.It will
The impregnated membranes carry out surface corona or corona treatment allocates A3302EEA and CR865 according to operation instruction, obtain
Polyurethane adhesive, adhesive is coated on PET basement membranes, and (Sichuan Dongcai Technology Group Co., Ltd produces, model：
DS10,250 μm of thickness) surface, it dries except after solvent, the process face of the fluorocarbon resin impregnated membranes enhanced with above-mentioned glass fabric is multiple
It closes.Then it in another surface coated with adhesive of PET basement membranes, dries after removing solvent, pvdf membrane (SKC companies produce, model FW1B,
30 μm of thickness) it is compound, it can be obtained photovoltaic back after toasting 120h in 50 DEG C.
Embodiment 4
According to the method in embodiment 1, the fluorocarbon resin impregnated membranes that the glass fabric that thickness is 30 μm enhances are made.It will
The impregnated membranes carry out surface corona or corona treatment allocates A3302EEA and CR865 according to operation instruction, obtain
Polyurethane adhesive, adhesive is coated on PET basement membranes, and (Sichuan Dongcai Technology Group Co., Ltd produces, model：
DS10,250 μm of thickness) surface, it dries except after solvent, the process face of the fluorocarbon resin impregnated membranes enhanced with above-mentioned glass fabric is multiple
It closes.Then it is coated on the another side of PET basement membranes after taking fluorocarbon coating (Daikin produces, SC series) deployed, dries and removes solvent,
Photovoltaic back is can be obtained after toasting 120h in 50 DEG C.
Simulation photovoltaic module (structure is respectively prepared in above-mentioned photovoltaic back：Glass/EVA adhesive film/EVA adhesive film/backboard), system
The fluorocarbon resin impregnated membranes of backboard are made to be located at air side when standby, the another side of backboard is located at battery side.Then by component respectively into
Row hydrothermal aging handles (DH) 1000h (85 DEG C, 85%RH), (- 40-85 DEG C, 6h/ cycles, 200 follow cold cycling treatment (TC)
Ring), wet jelly circular treatment (HF) (- 40-85 DEG C, 85%RH, for 24 hours/cycle, 10 cycles), whether observation simulated assembly be layered,
Whether whether xanthochromia, backboard have picking and crackle etc. to EVA.The results are shown in table below：
It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined
Assert that the specific implementation of the utility model is confined to these explanations.For the ordinary skill of the utility model technical field
For personnel, without departing from the concept of the premise utility, architectural form cans be flexible and changeable, and can be produced with subseries
Product.Several simple deduction or replace are only made, it is true by the claims submitted all to shall be regarded as belonging to the utility model
Fixed scope of patent protection.
Claims (5)
1. a kind of photovoltaic back, which is characterized in that the photovoltaic back include basement membrane, positioned at basement membrane side internal layer and pass through glue
Adhesive layer is bonded in the outer layer of the basement membrane other side, wherein the outer layer has by fiber cloth and the hole for being present in the fiber cloth
The composite construction constituted with the fluorocarbon resin of the sintering on surface.
2. photovoltaic back as described in claim 1, which is characterized in that the internal layer has structure identical with the outer layer simultaneously
And the basement membrane side is bonded in by gluing oxidant layer；Or the internal layer is to be bonded in the basement membrane side by gluing oxidant layer
Weather-proof film；Or the internal layer is the fluorocarbon coating layer for being directly coated on the basement membrane side.
3. photovoltaic back as described in claim 1, which is characterized in that the thickness of the outer layer is 20-75 μm.
4. photovoltaic back as described in claim 1, which is characterized in that the thickness of the basement membrane is 125-300 μm.
5. photovoltaic back as described in claim 1, which is characterized in that the outer layer is by repeatedly impregnating fluorine carbon with fiber cloth
Composite membrane obtained by resin and sintering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721163783.0U CN207909890U (en) | 2017-09-12 | 2017-09-12 | A kind of photovoltaic back |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721163783.0U CN207909890U (en) | 2017-09-12 | 2017-09-12 | A kind of photovoltaic back |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207909890U true CN207909890U (en) | 2018-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721163783.0U Expired - Fee Related CN207909890U (en) | 2017-09-12 | 2017-09-12 | A kind of photovoltaic back |
Country Status (1)
| Country | Link |
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| CN (1) | CN207909890U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109119504A (en) * | 2018-11-02 | 2019-01-01 | 南京朗伯尼特新能源有限公司 | Photovoltaic module and the method for preparing porous PVDF-HFP film at the photovoltaic module back side |
-
2017
- 2017-09-12 CN CN201721163783.0U patent/CN207909890U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109119504A (en) * | 2018-11-02 | 2019-01-01 | 南京朗伯尼特新能源有限公司 | Photovoltaic module and the method for preparing porous PVDF-HFP film at the photovoltaic module back side |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180925 Termination date: 20200912 |