CN108831942A - curved surface photovoltaic module and its processing method - Google Patents
curved surface photovoltaic module and its processing method Download PDFInfo
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- CN108831942A CN108831942A CN201810677698.9A CN201810677698A CN108831942A CN 108831942 A CN108831942 A CN 108831942A CN 201810677698 A CN201810677698 A CN 201810677698A CN 108831942 A CN108831942 A CN 108831942A
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- photovoltaic module
- laminated sample
- curved surface
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- 238000003672 processing method Methods 0.000 title claims abstract description 39
- 238000010030 laminating Methods 0.000 claims abstract description 22
- 241000700608 Sagitta Species 0.000 claims abstract description 16
- 238000003475 lamination Methods 0.000 claims abstract description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 52
- 239000000741 silica gel Substances 0.000 claims description 52
- 229910002027 silica gel Inorganic materials 0.000 claims description 52
- 239000003292 glue Substances 0.000 claims description 41
- 239000000463 material Substances 0.000 claims description 28
- 230000004927 fusion Effects 0.000 claims description 25
- 238000010438 heat treatment Methods 0.000 claims description 16
- 238000000926 separation method Methods 0.000 claims description 12
- 239000011521 glass Substances 0.000 claims description 11
- 229920002521 macromolecule Polymers 0.000 claims description 11
- 239000004744 fabric Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 9
- 239000002390 adhesive tape Substances 0.000 claims description 8
- 230000011218 segmentation Effects 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 4
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 4
- 229920006124 polyolefin elastomer Polymers 0.000 claims description 4
- 238000009824 pressure lamination Methods 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 claims description 2
- 238000004513 sizing Methods 0.000 claims description 2
- 238000010792 warming Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 12
- 238000005452 bending Methods 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
- 239000000084 colloidal system Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000002313 adhesive film Substances 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000007499 fusion processing Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 238000003855 Adhesive Lamination Methods 0.000 description 1
- ZTQSAGDEMFDKMZ-UHFFFAOYSA-N Butyraldehyde Chemical compound CCCC=O ZTQSAGDEMFDKMZ-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
- H01L31/049—Protective back sheets
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
Present disclose provides a kind of processing method of curved surface photovoltaic module, this method includes the following steps：Pre-laminated sample is provided；The pre-laminated sample is placed in the flexible chamber of laminating machine；Correspond to the region accommodating tool template of the pre-laminated sample below the flexible chamber, to form sagitta, which makes the arch face shape of position promotion and the sagitta of the pre-laminated sample in flexible chamber consistent with the curve form of pre-laminated sample；And the pre-laminated sample is laminated, to form the curved surface photovoltaic module.In addition, the disclosure additionally provides a kind of curved surface photovoltaic module.When this method is able to solve the lamination of pre-laminated sample the problem of unbalance stress.
Description
Technical field
This disclosure relates to photovoltaic art, in particular to a kind of curved surface photovoltaic module and its processing method, such as single glass curved surface
The laminating technology of photovoltaic module.
Background technique
Photovoltaic module (also referred to as photovoltaic doubling glass or solar panel) is usually processed before application, such as will
Preceding glass sheet, photovoltaic chip, glue film and backboard carry out adhesive lamination by the high temperature and pressure under vacuum condition.Wherein, backboard is
The component of glass is known as solar double-glass assemblies, and backboard is that the component of macromolecule flexible material is known as single glass component.Photovoltaic industry is raw at present
The photovoltaic module of production is almost plate armature, corresponding laminating technology also comparative maturity.According to market apply demand,
Photovoltaic module needs to be made into curved-surface structure of various shapes.
Summary of the invention
However, the lamination pressure that the different location of the photovoltaic module of curve form is subject in processing is not easy to control, such as
The position stress of protrusion is big, and the position stress of recess is small.Therefore, the recessed position of the photovoltaic module of curve form cannot be abundant
Compacting.Single glass curved element, backboard are flexible materials, and material is easy stress deformation in lamination process, and material is to lamination pressure ratio
More sensitive, curved element different location pressure unevenly will cause material fold, in uneven thickness, the not firm, over-voltage of lamination.
Therefore, when in this field there is still a need for solving photovoltaic module lamination using new means, curved surface entirety stress is not
The uniformly problem, for example, it is off quality, performance is inconsistent etc..
Disclosure technical problem to be solved is to provide a kind of processing method of new curved surface photovoltaic module, Yi Jiyou
The curved surface photovoltaic module that the processing method obtains.
The present disclosure proposes following technical schemes to solve above-mentioned technical problem：
According to the disclosure in a first aspect, providing a kind of processing method of photovoltaic module, this method may include following
Step：Pre-laminated sample is provided；The pre-laminated sample is placed in the flexible chamber of laminating machine；Below the flexible chamber
Corresponding to the region accommodating tool template of the pre-laminated sample, to form sagitta, which makes the pre-laminated sample exist
Position in flexible chamber is promoted, and the arch face shape of the sagitta is consistent with the curve form of pre-laminated sample；And to institute
It states pre-laminated sample to be laminated, to form the curved surface photovoltaic module.
According to the second aspect of the disclosure, in the processing method according to the photovoltaic module of first aspect, wherein the song
Face photovoltaic module includes foreboard bend glass, the first glue film, photovoltaic cell chips, the second glue film and macromolecule flexible back plate.
According to the third aspect of the disclosure, in the processing method according to the photovoltaic module of any of the above-described aspect, the song
Face photovoltaic module further includes edge seal adhesive tape.Optionally, the material of the edge seal adhesive tape is selected from butyl rubber.
According to the fourth aspect of the disclosure, in the processing method according to the photovoltaic module of any of the above-described aspect, wherein the
The material of one glue film and the second glue film is selected from ethylene-vinyl acetate copolymer (EVA), polyolefin elastomer (POE), polyvinyl alcohol
Butyral (PVB) or any combination thereof.
According to one aspect of the disclosure, in the processing method according to the photovoltaic module of any of the above-described aspect, middle layer
Press includes vacuum evacuation device and heating device, flexible chamber and vacuum evacuation device gas connection.
According to another aspect of the disclosure, in the processing method according to the photovoltaic module of any of the above-described aspect, wherein
The vacuum evacuation device further includes vacuum pump, vacuum pipe and vacuum control instrument, the vacuum pump, vacuum pipe and vacuum control
Gas connection between instrument processed, and with the flexible chamber gas connection.Heating device can be selected from hot wind electric heating
Device, hot oil heating device or their combination.
According to the 5th of the disclosure the aspect, in the processing method according to the photovoltaic module of any of the above-described aspect, wherein soft
Property chamber includes the space limited by upper silica gel plate and lower silica gel plate.
According to the 6th of the disclosure the aspect, in the processing method according to the photovoltaic module of any of the above-described aspect, photovoltaic group
The processing method of part can also include：Pre-laminated sample is placed in above-mentioned space；In the pre-laminated sample and the lower silicon
High temperature cloth is set between offset plate, fastens to it on arch face of sagitta；Seal the space；Sizing is vacuumized, then will
Vacuum is bled off, and the flexible chamber is sent into heating device.
Wherein, high temperature separation net can also be set between the pre-laminated sample and the upper silica gel plate.
According to the 7th of the disclosure the aspect, in the processing method according to the photovoltaic module of any of the above-described aspect, wherein work
Decking includes part and part under tooling in tooling, and part is consistent with the curve form of the pre-laminated sample in tooling, and
And the bottom surface of part is plane under the tooling.
According to the eighth aspect of the disclosure, in the processing method according to the photovoltaic module of any of the above-described aspect, middle layer
Pressing step includes being segmented lamination operation stage, and the fusion temperature of the first glue film or second glue film is Te, edge seal adhesive tape
Fusion temperature be Tb and the fusion temperature of the surface size of macromolecule flexible back plate is Tr.The segmentation is laminated operation stage
Including：
First stage：Normal pressure pre-heating temperature elevation, wherein Tr<Warming temperature<Te；
Second stage：It vacuumizes, pressurize and heats up, opening temperature ratio Te is low and to reach described by 5-10 DEG C wherein vacuumizing
A period of time is kept after the fusion temperature Te of first glue film or second glue film；
Phase III：High temperature and pressure lamination, wherein the temperature T of the high temperature be greater than Tb and pressure be 20KPa extremely
100KPa；And
Fourth stage：Discharging, cooling and vacuum breaker.
According to the another aspect of the disclosure, in the processing method according to the photovoltaic module of any of the above-described aspect, wherein
In second stage, kept for 5-15 minutes at the fusion temperature Te of first glue film or second glue film.Optionally, exist
It is kept for 5-15 minutes after reaching the fusion temperature Tb of the edge seal adhesive tape.
According to the 9th of the disclosure the aspect, in the processing method according to the photovoltaic module of any of the above-described aspect, lamination temperature
Spending T is 160-180 DEG C.It can be kept at the laminating temperature T 10-100 minutes.
According to the tenth of the disclosure the aspect, a kind of curved surface photovoltaic module is provided, is the light by any of the above-described aspect
What the processing method of volt component obtained.
By the processing method of the photovoltaic module of the disclosure, unbalance stress is asked when solving the lamination of curved surface photovoltaic module
Topic.More specifically, the disclosure is raised position of the pre-laminated sample in flexible chamber using tool mold, and tool mold can
To prop up the shape for overhanging photovoltaic module, and silica gel plate bending position is moved down, makes silica gel plate bending position lower than photovoltaic module side
Edge and corner angle position, so that silica gel plate is capable of the edge of sturdy photovoltaic module up and down, help to vacuumize make component each section by
Power is uniform.In addition, the disclosure is laminated using segmented layer pressure, to reduce influence journey of the discontinuity to curved element
Degree.
In addition, passing through disclosed method, additionally it is possible to provide that material is smooth, thickness is uniform, tightly compacted between each component
Curved surface photovoltaic module.
Brief Description Of Drawings
It is described in detail based on exemplary embodiment of the following drawings to the disclosure, wherein：
Fig. 1 is the figure for schematically showing the state being initially disposed in pre-laminated sample in the flexible chamber of laminating machine.
Fig. 2 be schematically show there is no the flexible chamber with pre-laminated sample when tool mold vacuumize pressurization after
The figure of state.
Fig. 3 is to schematically show to vacuumize the shape after pressurization using the flexible chamber with pre-laminated sample when tool mold
The figure of state.
Fig. 4 is the process flow for schematically showing the processing method of the photovoltaic module according to some embodiments of the present disclosure
Figure.
Symbol description：
1 lower silica gel plate；2 high temperature cloths；3 pre-laminated samples；4 high temperature separation nets；Silica gel plate on 5；Part under 6 tool molds；7
Part on tool mold；8 tool molds
Specific embodiment
Implementation some embodiments of the present disclosure explained below.However, the scope of the present disclosure is not limited to the implementation
Example can carry out various changes, recombination and deformation as long as not damaging purport to the disclosure.
According to some embodiments of the present disclosure, provide a kind of processing method of curved surface photovoltaic module, this method include with
Lower step：
Step 1：Pre-laminated sample is provided；
Step 2：Pre-laminated sample is put into the flexible chamber of laminating machine；
Step 3：Correspond to the region accommodating tool template of pre-laminated sample, below flexible chamber to form sagitta.It is excellent
Selection of land, sagitta promote position of the pre-laminated sample in flexible chamber, and the arch face shape of sagitta with it is pre-laminated
The curve form of sample is consistent；And
Step 4：The pre-laminated sample is laminated, to form the curved surface photovoltaic module.
In step 1, the structure of the curved surface photovoltaic module of the disclosure may include foreboard bend glass, the first glue film, light
Lie prostrate battery chip, the second glue film and macromolecule flexible back plate.In addition, the structure of the curved surface photovoltaic module of the disclosure can also wrap
Include sealing joint strip.First glue film and the second glue film can be same or different, and for encapsulating to photovoltaic cell chips.Glue film
The example of material include ethylene-vinyl acetate copolymer, polyolefin elastomer, polyvinyl butyral or its any group
It closes.Sealing joint strip can be located at the edge of photovoltaic module, and be sealed.The example of the material of sealing joint strip includes butyl
Glue.
According to step 2, pre-laminated sample can be placed in flexible chamber, which constitutes one of laminating machine
Point.The material for constituting flexible chamber may include silica gel etc..Fig. 1, which is schematically shown, is initially disposed in laminating machine for pre-laminated sample
State in flexible chamber.As shown in the drawing, flexible chamber may include the space limited by upper silica gel plate 5 and lower silica gel plate 1,
Pre-laminated sample 3 is placed in the space.One layer of high temperature cloth 2, high temperature cloth can be placed between pre-laminated sample 3 and lower silica gel plate 1
Effect is to avoid colloid pollution silica gel plate in product reflow process, optionally, may be used also between pre-laminated sample 3 and upper silica gel plate 5
To place one layer of high temperature separation net 4, separation net is reticular structure, effect first is that make pre-laminated sample each section uniform force,
Two contribute to vacuumize.
In step 3, a tool mold 8 is placed corresponding to the region of pre-laminated sample below flexible chamber, to be formed
Sagitta.Preferably, sagitta promotes position of the pre-laminated sample in flexible chamber, and the arch face shape of sagitta with
The curve form of pre-laminated sample is consistent.Tool mold 8 may include part 7 under part 6 and tooling in tooling, wherein in tooling
Part 6 is consistent with the shape of pre-laminated sample, and size radius is the thickness that curved element internal diameter subtracts silica gel plate；And tooling
The bottom surface of lower part 7 is plane, so as to stablize the fixed curved surface photovoltaic module.
It is then possible to flexible chamber is closed, and be (for example) laminated by vacuumizing pressurization.
Lamination is carried out to the photovoltaic module of the disclosure and is related to laminating machine and tool mold.The laminating machine may include taking out very
Empty device and heating device.Flexible chamber can be connected with vacuum evacuation device.In a preferred embodiment, vacuum evacuation device packet
Include vacuum pump, vacuum pipe and vacuum control instrument, and these components with flexible chamber gas connection.Thus, it is possible to
By flexible chamber it is closed after, flexible chamber is carried out to vacuumize pressurization.
Heating device can carry out hot wind electric heating, hot oil heating device or their combination.In preferred embodiment
In, heating device is hot wind electric heater unit.
In this way, tool mold can prop up the shape for overhanging pre-laminated sample, and the bending position of silica gel plate is moved down, makes silicon
Offset plate bending position be lower than pre-laminated sample edge and corner angle position, thus up and down silica gel plate can sturdy component edge, help
In vacuumizing each section uniform force for making pre-laminated sample.
In a preferred embodiment, by pre-laminated sample 3 be put into closed flexible chamber (for example, flexible vacuum room) into
Row laminating technology, wherein as shown in Figure 1, flexible chamber includes upper silica gel plate 5 and lower silica gel plate 1, pre-laminated sample and lower silica gel
One layer of high temperature cloth 2 is padded between plate 1, high temperature cloth effect is to avoid colloid pollution silica gel plate in product reflow process, pre-laminated sample
One layer of high temperature separation net 4 is padded between upper silica gel plate, separation net is reticular structure, is acted on first is that making pre-laminated sample each section
Uniform force, two contribute to vacuumize.
In some embodiments, the pressure that laminating machine applies is equal to flexible chamber and extraneous draught head, and chamber interior is
Vacuum, external pressure can directly squeeze flexible chamber, if pre-laminated sample is directly put into flexible vacuum chamber, vacuumize
Afterwards, negative pressure, which squeezes flexible chamber or more silica gel plate, separation net, high temperature cloth, can be affixed to curved element, finally be adjacent to curved element
Shape.However, as shown in Fig. 2, at the edge and corner angle position of pre-laminated sample 3, silica gel plate in the bending of sample bent position, on
Silica gel plate 5 cannot be bent sturdy with pre-laminated sample 3, and lower silica gel plate 1 is deformed excessive with the sturdy mistake of pre-laminated sample 3
Tightly, thus pre-laminated sample each section discontinuity.
As shown in figure 3, can carry out vacuumizing pressurization using the auxiliary of tool mold 8, lamination step is thus carried out.Such as Fig. 3
Shown, the accommodating tool template 8 below silica gel plate and pre-laminated sample, the tool mold raises pre-laminated sample 3.Tooling mould
Plate can be divided into tooling part 7 under part 6 and tooling, and wherein part 6 is consistent with the shape of pre-laminated sample in tooling, and
Size radius is the thickness that curved element internal diameter subtracts lower silica gel plate；And the bottom surface of part 7 is plane under tooling, can be stablized solid
It is fixed.Tool mold can prop up the shape for overhanging pre-laminated sample, and silica gel plate bending position is moved down, and make silica gel plate bending position
Lower than pre-laminated sample edge and corner angle position, thus up and down silica gel plate can sturdy component edge, help to vacuumize make it is pre-
Each section uniform force of laminate samples.
In step 4, it can be laminated using segmentation laminating technology, can reduce unbalance stress in this way to presheaf pressure-like
The influence degree of product.In some embodiments, the fusion temperature of each encapsulating material of photovoltaic products is defined as follows：
The fusion temperature of first and second glue films is Te, and the fusion temperature of edge seal adhesive tape is Tb, macromolecule flexibility back
The fusion temperature of the surface size of plate is Tr, meets following relationship between them：
Tr<Te<Tb。
The segmentation laminating technology includes the following four stage：
First stage：Normal pressure preheating
Wherein Tr<The temperature of warm-up phase<Te, no vacuum, no pressure.Since the glue amount of flexible back plate glue-line is considerably less,
Even if bubble will not be generated by therefore not vacuumizing in fusion process.If vacuumizing pressurization at this time, other materials melts not yet
Change, then pressure just can be all applied on the glue-line of backboard, glue-line is easy to be squeezed, and leads to local starved, and it is strong to influence bonding
Degree.Therefore, the main purpose of first segment preheating is to protect the glue-line of macromolecule flexible back plate, and normal pressure is generally non-pressurized state,
I.e. the air pressure of flexible chamber is identical as extraneous atmospheric pressure；
Second stage：It vacuumizes, pressurize and heats up
Vacuumize opening temperature：It is 5-10 DEG C low to vacuumize opening temperature ratio Te, opening temperature is too low will to shorten the first rank
The time of section preheating, from the glue-line for being unable to protect to flexible back plate, and opening temperature is too high, takes out not in time after glue film fusing
Vacuum will lead to bubble generation；
The fusion temperature of first and second glue films：It needs to be kept for the regular hour after reaching the fusion temperature of adhesive film material,
It allows material slowly to melt, avoids the gas generated that from cannot thering is sufficient time extraction to generate bubble, reach glue film fusion temperature Te
After can keep 5-15min；
The fusion temperature of sealing joint strip：5-15min can be kept after reaching the fusion temperature Tb of sealing joint strip；
Vacuumizing, pressurizeing and heating up to carry out simultaneously, can also first vacuumize, then heat up.Optionally, it vacuumizes, pressurize
It can be carried out simultaneously with heating.
Phase III：High temperature and pressure lamination
Vacuum has begun pressurization after opening, but material flowability is inadequate when low temperature, and the bonding of material is not achieved in pressurization
Performance needs higher temperature, pressure that could be bonded securely.Laminating temperature T is greater than Tb, and the range of T can be 160-180 DEG C, temperature
It keeps layers of material being made sufficiently to be bonded with 10-100min under degree T；
Fourth stage：Discharging, cooling and vacuum breaker；
If the fusing point of backboard glue-line is 60 DEG C, the fusing point of the first and second glue films is 110-120 DEG C, edge seal adhesive tape
Fusing point be 140 DEG C, corresponding laminating technology is：
First stage：It starts to warm up to 100 DEG C；
Second stage：100 DEG C of unlatchings vacuumize, pressurize, 110 DEG C of holding 10min, 140 DEG C of holding 10min；
Phase III：160 DEG C of holding 10min.
It is specifically described referring to processing method of the Fig. 4 to some embodiments of the present disclosure.The processing method can be with
Include the following steps：
S101- provides pre-laminated sample 3 and places it in the space limited in flexible chamber by upper and lower silica gel plate.
The structure of curved surface photovoltaic module may include foreboard bend glass, the first glue film, photovoltaic cell chips, the second glue
Film, macromolecule flexible back plate and optional sealing joint strip.
S102- pads tool mold 8 below lower silica gel plate 1, to form sagitta.
Thus, it is possible to which the bending position of upper silica gel plate 5 is moved down, make the bending position of silica gel plate 5 lower than presheaf pressure-like
The edge and corner angle position of product, so that silica gel plate is capable of the edge of sturdy pre-laminated sample 3 up and down, helping to vacuumize makes presheaf
Each section uniform force of pressure-like product 3.
S103- padded stupe 2 between lower silica gel plate 1 and pre-laminated sample 3, is allowed to fasten on the arch face of sagitta.
The material of the high temperature cloth 2 be polytetrafluoroethylene (PTFE), and the high temperature cloth 2 can heatproof be up to 250 DEG C or more.As a result,
High temperature cloth can be avoided colloid pollution silica gel plate in product reflow process.
S104- lid separation net 4 between pre-laminated sample 3 and upper silica gel plate 5.
The material of the separation net 4 is polytetrafluoroethylene (PTFE), and the mesh size of the separation net 4 is 2mm to 10mm and can
Heatproof is up to 250 DEG C or more.As a result, on the one hand the separation net makes each section uniform force of pre-laminated sample, on the other hand has
Help vacuumize.
S105- seals upper and lower silica gel plate.
Above-mentioned silica gel plate is sealed using multiple tracks silica gel card slot (at least 2 or more card slots).Specifically, by upper
Silica gel card slot is installed at the edge of lower silica gel plate, then makes card slot is corresponding to coincide, so that upper and lower silica gel plate be sealed.
S106-, which is vacuumized, makes curved surface photovoltaic module 1 be formed, and then bleeds off vacuum.
Flexible chamber is vacuumized, until vacuum degree is 100KPa, and is kept for 30 seconds or more under the vacuum degree.
Silica gel flexible chamber with curved surface photovoltaic module 1 is placed in the heating device of laminating machine by S107-.
The S108- first stage：Normal pressure preheating.
In step S108, the pressure in heating device is normal pressure, and is not vacuumized to heating device.The preheating rank
The temperature of section is greater than the fusion temperature Tr of the surface size of macromolecule flexible back plate, but is less than the fusion temperature of edge seal adhesive tape
Tb.Since the glue amount of flexible back plate glue-line is considerably less, even if bubble will not be generated by not vacuumizing in fusion process.If
Pressurization is vacuumized at this time, other materials melts not yet, then pressure just can be all applied on the glue-line of macromolecule flexible back plate,
Glue-line is easy to be squeezed in this way, leads to local starved, influences adhesive strength.Therefore, the main purpose of first segment preheating is to protect
Protect the glue-line of macromolecule flexible back plate.
S109- second stage：It vacuumizes, pressurize and heats up.
In step S109, opening temperature is vacuumized：Vacuumize fusing temperature of the opening temperature than the first and second glue films
It is 5-10 DEG C low to spend Te.The opening temperature too low time that will shorten first stage preheating, from protection is unable to flexible back plate
Glue-line, and opening temperature is too high, vacuumizes not in time after glue film fusing and will lead to bubble generation；Then, to flexible chamber into
Row vacuumizes, until vacuum degree is 100KPa；
The fusion temperature Te of first and second glue films：Reach when needing to keep certain after the fusion temperature of adhesive film material
Between, it allows material slowly to melt, avoids the gas generated that from cannot thering is sufficient time extraction to generate bubble, reach glue film fusion temperature
5-15min can be kept after Te；
The fusion temperature Tb of sealing joint strip：5-15min can be kept after reaching the fusion temperature Tb of sealing joint strip.
The S1010- phase III：High temperature and pressure lamination.
In step S1010, vacuum has begun pressurization after opening, but material flowability is inadequate when low temperature, pressurization
The adhesive property of material is not achieved, needs higher temperature, pressure that could be bonded securely.Laminating temperature T is greater than Tb, and the range of T can
To be 160-180 DEG C, keep layers of material being made sufficiently to be bonded with 10-100min under temperature T.
S1011- fourth stage：Discharging, cooling and vacuum breaker.
When temperature is reduced to 60 DEG C or less, curved surface photovoltaic module is taken out from laminating machine, is then carried out air-cooled.
For example, the fusing point of the first and second glue films is 110-120 DEG C, and edge is close if the fusing point of backboard glue-line is 60 DEG C
The fusing point of seal strip is 140 DEG C, and corresponding laminating technology is：
First stage：It starts to warm up to 100 DEG C；
Second stage：100 DEG C of unlatchings vacuumize, pressurize, 110 DEG C of holding 10min, 140 DEG C of holding 10min；
Phase III：160 DEG C of holding 10min.
By the processing method of above-mentioned curved surface photovoltaic module, unbalance stress is asked when solving the lamination of curved surface photovoltaic module
Topic.More specifically, the disclosure is raised position of the curved surface photovoltaic module in flexible chamber using tool mold, tool mold
The shape for overhanging photovoltaic module can be propped up, and silica gel plate bending position is moved down, makes silica gel plate bending position lower than photovoltaic module
Edge and corner angle position, so that silica gel plate is capable of the edge of sturdy photovoltaic module up and down, helping to vacuumize makes component each section
Uniform force.In addition, the disclosure is laminated using segmented layer pressure, to reduce influence journey of the discontinuity to curved element
Degree.
According to some embodiments of the present disclosure, a kind of curved surface photovoltaic module is provided, is by processing as described above
What method obtained.Pass through the curved surface that the available material of above-mentioned processing method is smooth, thickness is uniform, tightly compacted between each component
Photovoltaic module.
It is understood that above embodiments are merely to illustrate that the principle of the disclosure and the exemplary implementation that uses
Example, however the disclosure is not limited thereto.For those skilled in the art, in the spirit for not departing from the disclosure
In the case where essence, various changes and modifications can be made therein, these variations and modifications are also considered as the protection scope of the disclosure.
Claims (10)
1. a kind of processing method of curved surface photovoltaic module, it is characterised in that include the following steps：
Pre-laminated sample is provided；
The pre-laminated sample is placed in the flexible chamber of laminating machine；
Correspond to the region accommodating tool template of the pre-laminated sample, to form sagitta, the arch below the flexible chamber
Height make position of the pre-laminated sample in the flexible chamber promoted and the arch face shape of the sagitta with it is described pre-
The curve form of laminate samples is consistent；And
The pre-laminated sample is laminated, to form the curved surface photovoltaic module.
2. processing method according to claim 1, it is characterised in that the curved surface photovoltaic module successively includes foreboard curved surface
Glass, the first glue film, photovoltaic cell chips, the second glue film and macromolecule flexible back plate.
3. processing method according to claim 2, it is characterised in that the curved surface photovoltaic module further includes edge seal glue
Item.
4. processing method according to claim 2, it is characterised in that the material of first glue film and second glue film
Selected from ethylene-vinyl acetate copolymer, polyolefin elastomer, polyvinyl butyral or any combination thereof.
5. processing method according to claim 1, it is characterised in that the flexible chamber includes by upper silica gel plate and lower silicon
The space that offset plate limits.
6. processing method according to claim 5, it is characterised in that the processing method further includes：By the presheaf pressure-like
Product are placed in the space；
High temperature cloth is set between the pre-laminated sample and the lower silica gel plate, fastens to it on arch face of sagitta；
Seal the space；
Sizing is vacuumized, then bleeds off vacuum；And
The flexible chamber is sent into heating device.
7. processing method according to claim 6, it is characterised in that the processing method further includes：Sealing the space
Before, high temperature separation net is set between the pre-laminated sample and the upper silica gel plate.
8. processing method according to any one of claim 1 to 6, which is characterized in that the tool mold includes tooling
Part under upper part and tooling, part, the tooling lower part consistent with the curve form of the pre-laminated sample in the tooling
Divide the fixation for the tool mold.
9. processing method according to claim 3, which is characterized in that the flexible back plate further includes surface size, described
Surface size is contacted with second glue film；The lamination step includes segmentation lamination operation stage, first glue film and institute
The fusion temperature for stating the second glue film is Te, and the fusion temperature of the edge seal adhesive tape is the fusing of Tb and the surface size
Temperature is Tr, and the segmentation lamination operation stage includes：
First stage：Normal pressure pre-heating temperature elevation, wherein Tr<Warming temperature<Te；
Second stage：It vacuumizes, pressurize and heats up, opening temperature ratio Te is low and to reach described first by 5-10 DEG C wherein vacuumizing
A period of time is kept after the fusion temperature Te of glue film and second glue film；
Phase III：High temperature and pressure lamination, wherein the temperature T of the high temperature is greater than Tb；And
Fourth stage：Discharging, cooling and vacuum breaker.
10. a kind of curved surface photovoltaic module is obtained by processing method of any of claims 1-9.
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