CN114864718B - Solar module sectional lamination method and laminating machine - Google Patents
Solar module sectional lamination method and laminating machine Download PDFInfo
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- CN114864718B CN114864718B CN202210644686.2A CN202210644686A CN114864718B CN 114864718 B CN114864718 B CN 114864718B CN 202210644686 A CN202210644686 A CN 202210644686A CN 114864718 B CN114864718 B CN 114864718B
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- 238000010030 laminating Methods 0.000 title claims abstract description 54
- 238000003475 lamination Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000002313 adhesive film Substances 0.000 claims abstract description 135
- 238000010438 heat treatment Methods 0.000 claims abstract description 39
- 239000012530 fluid Substances 0.000 claims abstract description 24
- 238000004132 cross linking Methods 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims description 25
- 238000001816 cooling Methods 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- 238000000748 compression moulding Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000012528 membrane Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000008602 contraction Effects 0.000 abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
- 239000000741 silica gel Substances 0.000 description 10
- 229910002027 silica gel Inorganic materials 0.000 description 10
- 239000011521 glass Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000004891 communication Methods 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 4
- 229920001169 thermoplastic Polymers 0.000 description 4
- 239000004416 thermosoftening plastic Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000032798 delamination Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000000499 gel Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 238000007792 addition Methods 0.000 description 2
- 239000003431 cross linking reagent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 238000012858 packaging process Methods 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 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
- H01L31/0488—Double glass encapsulation, e.g. photovoltaic cells arranged between front and rear glass sheets
-
- 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
-
- 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
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
-
- 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
The application relates to the technical field of photovoltaic manufacturing, in particular to a solar module sectional lamination method and a laminating machine. The method comprises the following steps: paving a rubber membrane on the back plate, wherein the bottom surface of each battery piece corresponds to one rubber membrane; then paving a rubber membrane on the battery plate, wherein the top surface of each battery plate corresponds to one rubber membrane; finally, paving a panel on the adhesive film sheet to obtain a laminated piece; heating the residual adhesive film to form adhesive film fluid; and (3) raising the temperature of the laminating machine to be higher than the softening temperature of the adhesive film and lower than the crosslinking temperature of the adhesive film, and simultaneously introducing adhesive film fluid between the face plate and the back plate of the laminated piece. In the application, the adhesive film is added into the solar module in two forms, namely, the small adhesive film is directly paved, the basic thickness of the laminated piece is ensured, and the problem of battery piece movement caused by thermal contraction of the adhesive film is also avoided; and secondly, the adhesive film is introduced in a fluid form to fill gaps among the adhesive film sheets, so that the integrity of the adhesive film layer is ensured.
Description
Technical Field
The application relates to the technical field of photovoltaic manufacturing, in particular to a solar module sectional lamination method and a laminating machine.
Background
Lamination is an important and key procedure in photovoltaic manufacture, but because the traditional component has a simple structure, the battery piece, EVA and the back film are paved and then directly enter a laminating machine for lamination packaging, and the lamination process has single parameter and smaller range; the process is not applicable to film type components with complex structures by using the same lamination process parameters, and the film folds, bubbles, delamination and other adverse phenomena are easy to occur after lamination. Although the lamination process parameters of the glass component are optimized in the industry, the lamination process cannot be suitable for lamination packaging of the film component, and the lamination packaging process of the film component in the industry at present is easy to cause bad phenomena of wrinkling, air bubbles, delamination, lack of adhesive, too shallow film embossing and the like after lamination.
The adhesive film is produced by casting or calendaring after extrusion by an extruder at a certain temperature, and the stress in the length rolling direction can be brought into the adhesive film in the production process. The adhesive film melts at the lamination temperature to release stress, so that the adhesive film contracts, and the battery pieces are easy to move during contraction, so that the battery pieces are arranged irregularly after lamination.
To solve this problem, patent document publication No. CN102130198A discloses a solar cell module structure, particularly a solar cell module structure preventing displacement of a cell sheet at the time of lamination, comprising a panel, a thermoplastic, a cell sheet, a thermoplastic and a back sheet, the panel, the thermoplastic, the cell sheet, the thermoplastic and the back sheet being laminated in this order, and a high light transmission silk screen material being added above the cell sheet. Which prevents displacement of the battery cells by the high light transmission screen material, but the addition of the high light transmission screen material may affect the performance of the battery assembly.
The patent document with publication number CN105633183a discloses a packaging process of such a double-sided glass crystalline silicon solar cell module, comprising the following steps: s1: selecting; s2: scoring; s3: wrapping with a flexible polyester film; s4: laminating and packaging; s5: vacuumizing: before the molten EVA adhesive film is not shrunk, vacuumizing a lower chamber of the laminating machine, and inflating an upper air bag to enable two layers of glass to tightly press the EVA adhesive film and the solar cell; s6: cooling at low temperature; s7: and (5) heating and laminating. Before the EVA adhesive film is melted and is not shrunk, the lower chamber of the laminating machine is vacuumized, the upper air bag is inflated, the resistance of shifting the battery piece is increased, and the problem of shifting the battery piece is well solved. However, when the upper air bag is inflated and pressurized, the molten EVA adhesive film can flow around and overflow from the laminated piece, so that the laminating machine is polluted; meanwhile, the thickness of the EVA adhesive film in the solar cell module is reduced, and the connection strength between layers of the solar cell module can be possibly affected.
Disclosure of Invention
The application aims to solve the problems and provides a solar module sectional lamination method and a laminating machine.
The technical scheme for solving the problems is that firstly, a solar module sectional lamination method is provided, which comprises the following steps:
s1, preparing a panel, a back panel, a battery plate and an adhesive film, wherein the battery plate comprises a plurality of battery pieces;
the front and back sheets may be any material commonly used in solar cell modules in the prior art, and as a preferred aspect of the present application, the front and back sheets are glass sheets.
Likewise, the adhesive film may be any material commonly used in solar cell modules in the prior art, and as the preferred adhesive film of the present application, an EVA adhesive film is selected. The EVA adhesive film is usually added with a cross-linking agent in the preparation process, so that the EVA adhesive film is non-sticky at normal temperature, and is heated, cross-linked and solidified to form a good packaging effect. The softening temperature (melting temperature) and the crosslinking temperature of the EVA adhesive film are slightly different according to the types of the EVA adhesive film.
The battery plate is a structure of a battery pack formed by welding the battery pieces in a single piece in series.
S2, cutting the adhesive film into a plurality of adhesive films with areas not larger than the areas of the battery pieces;
s3, stacking: paving a plurality of adhesive films on the backboard, wherein the adhesive films are not contacted with each other, and the arrangement mode of the adhesive films is consistent with the arrangement mode of a plurality of battery pieces in the battery board; then, paving a battery plate on the adhesive film, and adjusting the position of the adhesive film so that the bottom surface of each battery plate corresponds to one adhesive film; then, paving a plurality of adhesive films on the battery plate, so that the top surface of each battery plate corresponds to one adhesive film; finally, paving a panel on the adhesive film sheet to obtain a laminated piece; placing the residual adhesive film sheet in a container for standby;
s4, laminating:
a. controlling the temperature of the laminating machine below the softening temperature of the adhesive film, feeding the laminated piece into the laminating machine, pressurizing an upper vacuum chamber of the laminating machine, and vacuumizing a lower vacuum chamber of the laminating machine;
b. heating the remaining adhesive film sheets in the container to a temperature above the softening temperature of the adhesive film and below the crosslinking temperature of the adhesive film to form adhesive film fluid; raising the temperature of the laminating machine to be higher than the softening temperature of the adhesive film and lower than the crosslinking temperature of the adhesive film, and simultaneously introducing adhesive film fluid between the panel and the backboard of the laminated piece;
c. and (3) raising the temperature of the laminating machine to be higher than the crosslinking temperature of the adhesive film, and performing compression molding to obtain the laminated piece.
In the application, the adhesive film is cut into the adhesive film with the area not larger than that of the battery piece and then is paved between the back plate and the battery plate, and between the panel and the battery plate, and the adhesive film is preferably paved in the center of the battery piece. At this time, when the temperature is raised and the heat is contracted, the area of the rubber membrane is smaller than that of the battery piece and the rubber membrane is not connected with the adjacent rubber membrane, so that the battery piece corresponding to the rubber membrane is not driven to move, and the problem of displacement of the battery piece is well solved. Meanwhile, the area of the adhesive film is smaller than that of the battery piece, so that the adhesive film can not flow out of the laminated body to pollute the laminating machine even if the adhesive film flows around under the action of pressure when the adhesive film is pressurized. Although the adhesive film can be in contact connection with adjacent adhesive films when flowing around under the action of pressure, in order to ensure the thickness of the adhesive film in the finished product of the solar cell module and avoid gaps, the application fills the gaps through flowing adhesive film fluid, thereby ensuring the integrity and the connection strength of the adhesive film layer.
Preferably, the laminate is taken out after the laminator is cooled after the press molding. Thus, the phenomenon that the film folds and embossed marks are too shallow due to the large difference of cold and hot of the film when the film is taken out of the pot at high temperature can be prevented.
In the step a, the lower vacuum chamber is vacuumized, and then the lower vacuum chamber is vacuumized and the upper vacuum chamber is pressurized at the same time; vacuumizing for 4-5min and pressurizing for 2-3min. Firstly, vacuumizing is carried out to exhaust air in the laminated piece on one hand, so that the problem of bubbles after lamination is avoided, and on the other hand, before pressurization, the adhesive film is spread and stuck on the back plate or the battery plate in a negative pressure mode, so that the adhesive film is prevented from being wrinkled during subsequent pressurization, and the thickness of the adhesive film layer is uneven. The purpose of the pressurization is to ensure the initial position of the battery plate by friction.
Preferably, in the step b, both the upper vacuum chamber and the lower vacuum chamber are pressurized, and the pressure of the upper vacuum chamber is greater than the pressure of the lower vacuum chamber. The purpose of pressurizing the upper vacuum chamber is to avoid that the flow of the adhesive film fluid drives the battery piece to move when the adhesive film fluid is introduced. The purpose of the pressurization of the lower vacuum chamber is to encourage the film fluid to flow into the stack under the effect of the differential air pressure.
In the step c, the lower vacuum chamber is vacuumized and then the upper vacuum chamber is pressurized and molded. Further exhausting the air from within the stack.
As a preferred aspect of the present application, the evacuation time of the lower vacuum chamber is 40-70s. Avoiding the outflow of the adhesive film caused by overlong vacuumizing time.
Preferably, in step c, the pressurizing time is 12-20min. Ensuring the qualified viscosity of the adhesive film and avoiding the influence of delamination on the reliability of the product.
It can be seen that the solar module segment lamination method of the present application is implemented with the problem of the introduction of the glue film fluid, and therefore, it is still another object of the present application to provide a laminator for performing the solar module segment lamination method.
The laminating machine comprises a shell, a silica gel plate and a control structure, wherein the silica gel plate is arranged in the shell and divides the shell into an upper vacuum chamber and a lower vacuum chamber, and the control structure is used for controlling the upper vacuum chamber and the lower vacuum chamber to be vacuumized or inflated and pressurized; a heating structure is arranged in the lower vacuum chamber; the lower vacuum chamber is internally provided with a die for accommodating the laminated piece, a container for accommodating the residual adhesive film sheets and a liquid pipe, wherein the outlet end of the liquid pipe is arranged in the die, and the inlet end of the liquid pipe is arranged outside the die; the device also comprises a lifting device for controlling the container to lift so that the inlet end of the liquid pipe is inserted into the container.
Before step b, the liquid tube is not inserted into the container; and c, when the step b is carried out, the liquid pipe is inserted into the container, the mold and the container form a communication system, the lower vacuum chamber is used for pressurizing, and the pressure outside the communication system is greater than the pressure in the communication system, so that the adhesive film fluid in the container is pressed into the mold.
Preferably, the mold comprises a side plate arranged on the side surface of the laminated piece and used for preventing glue film fluid in the laminated piece from overflowing; the side plate is hollow, and the heating structure comprises a heating piece arranged in the inner cavity of the side plate.
In the traditional laminating machine, the heating structure is arranged at the bottom, so that the heat transfer direction of the heating structure is from the back plate of the laminated piece to the panel, and the problem that the upper adhesive film and the lower adhesive film are heated unevenly exists. The upper and lower two-layer adhesive films are heated unevenly, so that the crosslinking degree of the upper and lower two-layer adhesive films is inconsistent, the degree of crosslinking reaction is in direct proportion to the density of a three-dimensional net structure formed after crosslinking of the adhesive films, namely, the elastic modulus of the upper and lower two-layer adhesive films is different, the deformation degree of the upper and lower two-layer adhesive films is inconsistent, and then the battery plate is driven to move. In the application, the heat transfer direction from the side surface to the inside of the laminated piece is adopted, so that the heating uniformity of the upper and lower adhesive films is improved.
Preferably, the heating structure further comprises a second heating element arranged at the bottom of the container.
The application has the beneficial effects that:
1. in the application, the adhesive film is added into the solar module in two forms, namely, the small adhesive film is directly paved, the basic thickness of the laminated piece is ensured, and the problem of battery piece movement caused by thermal contraction of the adhesive film is also avoided; and secondly, the adhesive film is introduced in a fluid form, so that gaps among the adhesive film sheets are filled, gaps are avoided in the solar module, and meanwhile, the integrity of the adhesive film layer is ensured.
2. In the application, the traditional laminating machine is modified to heat the adhesive film sheet in the container and the adhesive film sheet in the laminated piece simultaneously, and simultaneously, the adhesive film fluid is pressed into the laminated piece under the action of air pressure difference, so that the implementation of the solar module sectional laminating method is facilitated.
Drawings
FIG. 1 is a schematic illustration of the structure of a laminator prior to use;
FIG. 2 is a schematic diagram of the structure of a laminator in use;
in the figure: a shell 1, a silica gel plate 10, an upper vacuum chamber 11, a lower vacuum chamber 12, a mould 121, a container 122, a liquid pipe 123 and a lifting device 124.
Detailed Description
The following is a specific embodiment of the present application, and the technical solution of the present application is further described with reference to the accompanying drawings, but the present application is not limited to these examples.
Example 1
A laminating machine, as shown in fig. 1 and 2, is basically identical to a conventional laminating machine, and comprises a casing 1, wherein the casing 1 is divided into an upper casing and a lower casing, so that the casing 1 can be opened and closed, and a laminated piece can be taken and placed conveniently. Corresponding rubber rings are usually arranged at the upper shell opening and the lower shell opening so as to ensure the tightness in the shell 1 after the upper shell and the lower shell are connected. The silica gel plate 10 is arranged in the shell 1, the silica gel plate 10 is generally arranged in the upper shell, and the silica gel plate 10 is made of a material with good deformability. After the upper and lower shells are connected and sealed, the inner cavity of the shell 1 is divided into an upper vacuum chamber 11 and a lower vacuum chamber 12 by a silica gel plate 10, and the upper and lower vacuum chambers further comprise a control structure for controlling the upper vacuum chamber 11 and the lower vacuum chamber 12 to be vacuumized or inflated and pressurized; a heating structure is provided in the lower vacuum chamber 12. In use, the laminate is placed in the lower vacuum chamber 12, the lower vacuum chamber 12 is evacuated to remove air from the laminate, and then the upper vacuum chamber 11 is inflated to deform the silicone panel 10 downwardly against the laminate, thereby laminating the laminate.
In the application, a mounting plate is arranged in the lower vacuum chamber 12, the mounting plate divides the lower vacuum chamber 12 into a laminating cavity and a containing cavity, and the mounting plate is provided with a through hole so as to ensure the communication between the laminating cavity and the containing cavity. A die 121 is provided on the mounting plate, i.e. in the lamination chamber, the bottom plate of the die 121 being provided on the mounting plate or directly with a part of the mounting plate as its bottom plate. Because solar cell modules are mostly rectangular, the bottom plate is rectangular, the area of the bottom plate can be slightly larger than the bottom area of the solar cell module, and the redundant adhesive film which is caused by the bottom plate and is filled later can be directly cut off after lamination is completed. The side plates are respectively arranged around the bottom plate, and the height of the side plates protruding out of the bottom plate can be slightly larger than the height of the laminated piece by 1-2mm. The side plates are hollow inside and filled with heating wires and/or heating oil as part of the heating structure. The mold has no top plate, and when the upper vacuum chamber 11 is inflated, the silica gel plate 10 deforms to press against the top of the side plate to become the top plate of the mold, and at this time, the mold becomes a sealing structure. Meanwhile, the deformability of the silica gel plate 10 is good, the vacuum chamber 11 is continuously pressurized on the basis, and the part of the silica gel plate 10 between the side plates can be continuously pressed down to the lamination piece in the abutting mold 121 to realize lamination.
A lifting device 124 is disposed at the bottom of the accommodating cavity, and in this embodiment, an oil cylinder is used as the lifting device. The movable portion of the lifting device 124 is provided with a container 122, and the container 122 is preferably a cylindrical structure having a small bottom area and a high height. The container 122 is vertically movable by the elevating means 124. To ensure the stability of the movement of the container 122, two lifting devices 124 are generally disposed at the bottom of the accommodating cavity, and the movable parts of the two lifting devices 124 are connected by a support plate, so that the container 122 is mounted on the support plate. The bottom plate of the container 122 may also be configured to be hollow in the interior and filled with heating wires or/and heating oil, as another part of the heating structure, and is preferably controlled by the same procedure as part of the heating structure in the side plate, so as to ensure that the temperature of the adhesive film sheet in the container 122 is substantially consistent with the heating of the laminated adhesive film sheet in the mold 121. In order to put the adhesive film into the container 122, an opening is provided in the portion of the housing 1 located in the receiving chamber, or the mounting plate is detachably connected to the inner wall of the housing 1.
In order to communicate the mold 121 and the container 122, the liquid pipe 123 is further included, an outlet end of the liquid pipe 123 is arranged in the mold 121, and an inlet end of the liquid pipe is arranged outside the mold 121; the liquid pipe 123 may be inserted into the container 122 or may not be inserted into the container 122 by the elevating structure 124.
Based on the laminating machine, a solar component segmented lamination method comprises the following steps of:
s1, preparing a glass panel, a glass backboard, a battery board and an EVA adhesive film, wherein the battery board comprises a plurality of battery pieces. In this embodiment, the EVA film is a film modified by a crosslinking agent, and the softening temperature is about 82 ℃ and the crosslinking temperature is about 140 ℃.
S2, cutting the adhesive film into a plurality of adhesive films with the area being half of that of the battery piece;
s3, stacking: paving a plurality of adhesive films on the backboard, wherein the adhesive films are not contacted with each other, and the arrangement mode of the adhesive films is consistent with the arrangement mode of a plurality of battery pieces in the battery board; then, paving a battery plate on the adhesive film, and adjusting the position of the adhesive film so that the bottom surface of each battery plate corresponds to one adhesive film; then, paving a plurality of adhesive films on the battery plate, so that the top surface of each battery plate corresponds to one adhesive film; finally, paving a panel on the adhesive film sheet to obtain a laminated piece; the structure of the laminate may be seen in cross-section through the laminate in die 121 in figures 1 and 2. The rest is reserved;
s4, laminating:
the laminator temperature was controlled to 50 c by a two part heating arrangement in the laminator, then the upper housing of the laminator was opened, the laminate was fed into the laminator die 121, the remaining adhesive film was fed into the container 122, and the upper and lower housings were sealed.
Vacuumizing the lower vacuum chamber 12 of the laminating machine to a vacuum degree of 20KPa, vacuumizing for 270s, forming vacuum in the die 121, and stopping vacuumizing; the upper vacuum chamber 11 is then inflated to a pressure of 30KPa for 150s, closing the top of the mold 121 while simultaneously pressurizing the laminate.
The laminator temperature was raised to 100 c by a two part heating arrangement in the laminator and the die 121 and the gel sheet in the container 122 melted to form a fluid. The container 122 is controlled to move up by the lifting device 124 so that the inlet end of the liquid pipe 123 is inserted under the liquid surface in the container 122, and at this time, the adhesive film in the container 122 fluidly seals the inlet end of the liquid pipe 123. Continuing to pressurize the upper vacuum chamber 11 to 70KPa so that the top of the mold 121 remains sealed; the lower vacuum chamber 12 is then pressurized to 20KPa, at which time the gas is outside the mold 121 (the top opening of the mold 121 is closed by the silicone plate 10, the bottom liquid tube 123 inlet is closed by the glue film fluid in the container 122), and the gas does not enter the mold 121, although it is pressurized. Meanwhile, since the inside of the mold 121 is vacuum, the outside of the mold is pressurized, and the adhesive film fluid in the container 122 is driven to flow into the mold 121 by the action of the air pressure difference, so that the gap in the mold 121 is filled.
Heating the laminator to 150 ℃ through a two-part heating structure in the laminator, vacuumizing the lower vacuum chamber 12 to the vacuum degree of 20KPa, vacuumizing for 50s, and stopping vacuumizing; then the upper vacuum chamber 11 was pressurized to 80KPa for 15min to obtain a laminate.
And through a two-part heating structure in the laminating machine, the temperature of the laminating machine is reduced to 80 ℃, and then the upper shell is opened to take out the laminated piece.
Example 2
This embodiment is substantially identical to embodiment 1, except that: the temperature and pressure in the step S4 are different, and the partial vacuumizing and pressurizing sequences are different.
S4, laminating:
the laminator temperature was controlled to 60 c by the two part heating arrangement in the laminator, then the upper housing of the laminator was opened, the laminate was fed into the laminator die 121, the remaining adhesive film was fed into the container 122, and the upper and lower housings were sealed.
Vacuumizing the lower vacuum chamber 12 of the laminating machine to a vacuum degree of 10KPa, and forming vacuum in the die 121 after vacuumizing for 180 seconds; the lower vacuum chamber 12 is maintained in a vacuum-pumped state, and then the upper vacuum chamber 11 is inflated and pressurized to a pressure of 30KPa, while being vacuum-pumped and pressurized for 120s.
The laminator temperature is raised to 110 c by a two part heating arrangement in the laminator, and the die 121 and the gel sheet within the container 122 are melted to form a fluid. The container 122 is controlled to move up by the lifting device 124 so that the inlet end of the liquid pipe 123 is inserted under the liquid surface in the container 122, and at this time, the adhesive film in the container 122 fluidly seals the inlet end of the liquid pipe 123. Continuing to pressurize the upper vacuum chamber 11 to 60KPa so that the top of the mold 121 remains sealed; the lower vacuum chamber 12 is then pressurized to 20KPa, and the film fluid in the container 122 is driven to flow into the mold 121 by the pressure difference of air, thereby filling the void in the mold 121.
And (3) heating the laminating machine to 160 ℃ through a two-part heating structure in the laminating machine, vacuumizing the lower vacuum chamber 12 to the vacuum degree of 20KPa, and pressurizing the upper vacuum chamber 11 to 70KPa for 20min after vacuumizing for 40s to obtain the laminated piece.
And (3) cooling the temperature of the laminating machine to 70 ℃ through a two-part heating structure in the laminating machine, and opening the upper shell to take out the laminated piece.
Example 3
This embodiment is substantially identical to embodiment 1, except that: the temperature and pressure in the step S4 are different, and the partial vacuumizing and pressurizing sequences are different.
S4, laminating:
the laminator temperature was controlled to 70 c by a two part heating arrangement in the laminator, then the upper housing of the laminator was opened, the laminate was fed into the laminator die 121, the remaining film was fed into the container 122, and the upper and lower housings were sealed.
Vacuumizing the lower vacuum chamber 12 of the laminating machine to a vacuum degree of 30KPa, and forming vacuum in the die 121 after vacuumizing for 120 seconds; the lower vacuum chamber 12 is maintained in a vacuum-pumped state, and then the upper vacuum chamber 11 is inflated and pressurized to a pressure of 40KPa, while being vacuum-pumped and pressurized for 180s.
The laminator temperature was raised to 105 c by a two part heating arrangement in the laminator and the die 121 and the gel sheet in the container 122 melted to form a fluid. The container 122 is controlled to move up by the lifting device 124 so that the inlet end of the liquid pipe 123 is inserted under the liquid surface in the container 122, and at this time, the adhesive film in the container 122 fluidly seals the inlet end of the liquid pipe 123. Continuing to pressurize the upper vacuum chamber 11 to 80KPa so that the top of the mold 121 remains sealed; the lower vacuum chamber 12 is then pressurized to 30KPa, and the film fluid in the container 122 is forced to flow into the mold 121 by the action of the air pressure difference, thereby filling the void in the mold 121.
And (3) heating the laminating machine to 155 ℃ through a two-part heating structure in the laminating machine, vacuumizing the lower vacuum chamber 12 to the vacuum degree of 30KPa, and pressurizing the upper vacuum chamber 11 to 85KPa for 12min after vacuumizing for 70s to obtain the laminated piece.
And (3) cooling the temperature of the laminating machine to 70 ℃ through a two-part heating structure in the laminating machine, and opening the upper shell to take out the laminated piece.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the application. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the application or exceeding the scope of the application as defined in the accompanying claims.
Claims (10)
1. A solar module segment lamination method, characterized in that: the method comprises the following steps:
s1, preparing a panel, a back panel, a battery plate and an adhesive film, wherein the battery plate comprises a plurality of battery pieces;
s2, cutting the adhesive film into a plurality of adhesive films with areas not larger than the areas of the battery pieces;
s3, stacking: paving a plurality of adhesive films on the backboard, wherein the adhesive films are not contacted with each other, and the arrangement mode of the adhesive films is consistent with the arrangement mode of a plurality of battery pieces in the battery board; then, paving a battery plate on the adhesive film, and adjusting the position of the adhesive film so that the bottom surface of each battery plate corresponds to one adhesive film; then, paving a plurality of adhesive films on the battery plate, so that the top surface of each battery plate corresponds to one adhesive film; finally, paving a panel on the adhesive film sheet to obtain a laminated piece; placing the residual adhesive film sheet in a container for standby;
s4, laminating: a. controlling the temperature of the laminating machine below the softening temperature of the adhesive film, feeding the laminated piece into the laminating machine, pressurizing an upper vacuum chamber of the laminating machine, and vacuumizing a lower vacuum chamber of the laminating machine; b. heating the remaining adhesive film sheets in the container to a temperature above the softening temperature of the adhesive film and below the crosslinking temperature of the adhesive film to form adhesive film fluid; raising the temperature of the laminating machine to be higher than the softening temperature of the adhesive film and lower than the crosslinking temperature of the adhesive film, and simultaneously introducing adhesive film fluid between the panel and the backboard of the laminated piece; c. and (3) raising the temperature of the laminating machine to be higher than the crosslinking temperature of the adhesive film, and performing compression molding to obtain the laminated piece.
2. A solar module segment lamination method according to claim 1, wherein: and after compression molding, cooling the laminating machine and taking out the laminated piece.
3. A solar module segment lamination method according to claim 1, wherein: in the step a, the lower vacuum chamber is vacuumized firstly, and then the lower vacuum chamber is vacuumized and the upper vacuum chamber is pressurized simultaneously; vacuumizing for 4-5min and pressurizing for 2-3min.
4. A solar module segment lamination method according to claim 1, wherein: in step b, both the upper vacuum chamber and the lower vacuum chamber are pressurized, and the pressure of the upper vacuum chamber is greater than the pressure of the lower vacuum chamber.
5. A solar module segment lamination method according to claim 1, wherein: in the step c, the lower vacuum chamber is vacuumized and then the upper vacuum chamber is pressurized and molded.
6. A solar module segment lamination method according to claim 5, wherein: the vacuumizing time of the lower vacuum chamber is 40-70s.
7. A solar module segment lamination method according to claim 1, wherein: in step c, the pressurizing time is 12-20min.
8. A solar module segment lamination method according to claim 1, wherein: EVA adhesive film is selected as the adhesive film.
9. A laminator for carrying out the solar module staged lamination method of any one of claims 1-8, comprising a housing (1) and a silicone plate (10) arranged in the housing (1), the silicone plate (10) dividing an inner cavity of the housing (1) into an upper vacuum chamber (11) and a lower vacuum chamber (12), and further comprising a control structure for controlling the upper vacuum chamber (11) and the lower vacuum chamber (12) to be evacuated or inflated and pressurized; a heating structure is arranged in the lower vacuum chamber (12); the method is characterized in that: a die (121) for accommodating the laminated piece, a container (122) for accommodating the residual adhesive film sheets and a liquid pipe (123) are arranged in the lower vacuum chamber (12), the outlet end of the liquid pipe (123) is arranged in the die (121), and the inlet end of the liquid pipe is arranged outside the die (121); and a lifting device (124) for controlling the lifting of the container (122) so that the inlet end of the liquid pipe (123) is inserted into the container (122).
10. A laminator according to claim 9, wherein: the die (121) comprises a side plate arranged on the side surface of the laminated piece and used for preventing glue film fluid in the laminated piece from overflowing; the side plate is hollow, and the heating structure comprises a heating piece arranged in the inner cavity of the side plate.
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| CN103715297A (en) * | 2012-10-04 | 2014-04-09 | 信越化学工业株式会社 | Method of manufacturing solar cell module |
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