CN114023836A - Photovoltaic module and manufacturing process thereof - Google Patents

Photovoltaic module and manufacturing process thereof Download PDF

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Publication number
CN114023836A
CN114023836A CN202111316016.XA CN202111316016A CN114023836A CN 114023836 A CN114023836 A CN 114023836A CN 202111316016 A CN202111316016 A CN 202111316016A CN 114023836 A CN114023836 A CN 114023836A
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CN
China
Prior art keywords
cover plate
sealant
adhesive film
edge
photovoltaic module
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Pending
Application number
CN202111316016.XA
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Chinese (zh)
Inventor
高镭
王建
黄晓
刘亚锋
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Risen Energy Co Ltd
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Risen Energy Co Ltd
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Priority to CN202111316016.XA priority Critical patent/CN114023836A/en
Publication of CN114023836A publication Critical patent/CN114023836A/en
Pending legal-status Critical Current

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    • 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
    • H01L31/18—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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/10—Photovoltaic [PV]
    • 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

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Photovoltaic Devices (AREA)

Abstract

The application provides a photovoltaic module and a manufacturing process thereof, and relates to the technical field of photovoltaics. The photovoltaic module includes: the battery pack comprises a first cover plate, a first adhesive film, a battery piece, a second adhesive film and a second cover plate which are sequentially stacked; at least one of the first cover plate and the second cover plate is provided with a gas exhaust area, the gas exhaust area is provided with a plurality of grooves, and one ends of the grooves extend to the edge of the cover plate; the first cover plate and the second cover plate are bonded through first sealant, and the first sealant is arranged along the edge of the cover plate and annularly arranged around the first adhesive film, the battery piece and the second adhesive film; at least part of the first sealant is attached to the venting region. The photovoltaic module of this application has good waterproof ability.

Description

Photovoltaic module and manufacturing process thereof
Technical Field
The application relates to the technical field of photovoltaics, in particular to a photovoltaic module and a manufacturing process thereof.
Background
Photovoltaic power generation is a renewable energy power generation technology with rich resources and a clean power generation process. Common photovoltaic power stations comprise a centralized type, a distributed type, a roof type, an agricultural greenhouse type and the like, and in recent years, with increasingly prominent land contradiction, the overwater photovoltaic power station also becomes a new choice in the carbon neutralization era. The existing overwater photovoltaic power station can be divided into a pile foundation fixed type and a water surface floating type; because the surface of water floats formula photovoltaic module and the surface of water is nearer, the water-cooling effect advantage is obvious, adapt to surface of water height and change advantage such as strong for the surface of water floats formula photovoltaic power plant and uses relatively extensively. Many domestic and foreign companies adopt frameless photovoltaic modules and a small section of mounting bracket to fix the modules on an underwater floating film mounting system. Compared with a ground photovoltaic power station, the on-site environment of the water photovoltaic power station generally has the characteristics of high humidity, salt fog and wave gust, so that in order to adapt to the water surface environment and reduce the failure rate, the photovoltaic module selected by the water photovoltaic power station needs to have salt fog corrosion resistance and lower moisture permeability in the design and application processes. When the module need be examined promptly and is soaked for a long time, photovoltaic module's waterproof ability.
In the prior art, the photovoltaic module is connected with the frame through adopting butyl rubber as frame rubber, the butyl rubber is arranged around the photovoltaic module, the position where the photovoltaic module is contacted with the frame is sealed through the butyl rubber, but the mode easily causes that the frame overflow rubber is bad and water vapor is immersed. In addition, some of the prior art adopt frameless photovoltaic modules, a circle of butyl rubber is arranged at the edges of panel glass and back panel glass, a black coating layer is plated on the panel glass, poor appearance of the butyl rubber and a packaging adhesive film can be hidden, the butyl rubber and the adhesive film layer are arranged at intervals to avoid poor appearance caused by mutual extrusion of the butyl rubber and the adhesive film layer, but lamination bubbles between the butyl rubber and the adhesive film layer cannot be improved in the arrangement mode, and due to the existence of the lamination bubbles, water vapor can intrude into the photovoltaic modules through the bubble holes to affect the reliability of the photovoltaic modules.
Disclosure of Invention
The embodiment of the application provides a photovoltaic module and a manufacturing process thereof, which can improve the waterproof capability of the photovoltaic module.
The embodiment of the application is realized as follows:
in a first aspect, an embodiment of the present application provides a photovoltaic module, including: the battery pack comprises a first cover plate, a first adhesive film, a battery piece, a second adhesive film and a second cover plate which are sequentially stacked;
at least one of the first cover plate and the second cover plate is provided with a gas exhaust area, the gas exhaust area is provided with a plurality of grooves, and one ends of the grooves extend to the edge of the cover plate;
the first cover plate and the second cover plate are bonded through first sealant, and the first sealant is arranged along the edge of the cover plate and annularly arranged around the first adhesive film, the battery piece and the second adhesive film; at least part of the first sealant is attached to the venting region.
In the technical scheme, because first apron and second apron bond through first sealed glue, first sealed glue sets up and is cyclic annular setting around first glued membrane, battery piece and second glued membrane along the edge of apron, then inside first sealed glue can avoid steam to enter into photovoltaic module from the edge, improves photovoltaic module's waterproof performance. In addition, the exhaust area of apron has the recess, and the one end of recess extends to the edge of apron, and the laminating of at least part and the exhaust area of first sealed glue, then when forming this photovoltaic module, the in-process of heating lamination, the gas in the subassembly can conveniently be followed the recess and discharged to be favorable to improving photovoltaic module's waterproof performance.
In one possible embodiment, the venting area is completely covered by the first sealant.
In the technical scheme, as the exhaust area is completely covered by the first sealant, the first adhesive film and the second adhesive film are not in contact with the exhaust area, which means that the first adhesive film and the second adhesive film are not overflowed through the groove after being melted in the heating laminating process.
In one possible embodiment, the width of the venting zone is at least 2mm less than the width of the first sealant.
In one possible embodiment, the venting area is provided in the edge region of the long side of the cover plate; and/or the venting area is provided in the edge area of the short side of the cover plate.
In the technical scheme, compared with the exhaust area arranged on the edge area of the short side of the cover plate, when the exhaust area is arranged on the edge area of the long side of the cover plate, the exhaust area is more favorable for exhausting the gas in the assembly through the groove. When the edge regions of the long side and the short side of the cover plate have the exhaust regions, the exhaust effect of the gas inside the module can be further improved.
In a possible embodiment, the cover plate with the venting area has a thickness of 1.6 to 2.5mm, a depth of the groove of 0.3 to 0.5mm and a width of 0.3 to 0.5 mm.
1.6 ~ 2.5 mm's apron, the degree of depth of recess is 0.3 ~ 0.5mm, and the width is 0.3 ~ 0.5mm, can enough better guarantee the load strength of apron, also can guarantee to discharge the inside gas of subassembly more smoothly.
In a possible embodiment, the distance between the mutually adjacent edges of two adjacent grooves is 0.5-2 mm.
In a possible implementation scheme, the second adhesive film is provided with a first through hole, the second cover plate is provided with a second through hole, the bus bar of the battery piece penetrates through the first through hole and the second through hole, the first through hole is internally provided with a second adhesive, the second adhesive is annularly arranged on the bus bar and has a gap with the edge of the battery piece, and the second adhesive is adhered to the second cover plate and the first adhesive film.
In the technical scheme, because the second sealant is annularly arranged on the bus bar and has a gap with the edge of the cell, and the second sealant is bonded with the second cover plate and the first adhesive film, water vapor is not easy to damage the cell through the first through hole and the second through hole, and the waterproof performance of the photovoltaic module can be further improved.
In a possible embodiment, the distance between the outer edge of the second sealant and the wall of the first through hole is 2-3 mm, and/or the distance between the second sealant and the edge of the battery piece is 3-4 mm.
In a second aspect, an embodiment of the present application provides a process for manufacturing a photovoltaic module, including:
providing a first cover plate and a second cover plate, wherein the first cover plate and the second cover plate respectively comprise a mounting surface, the mounting surface of at least one of the first cover plate and the second cover plate is provided with a gas exhaust area, the gas exhaust area is provided with a plurality of grooves, and one ends of the grooves extend to the edge of the cover plate;
laying a first sealant on the mounting surface of at least one of the first cover plate and the second cover plate, wherein the first sealant is laid along the edge of the cover plate and is annular;
sequentially laying a first adhesive film, a battery piece and a second adhesive film on the mounting surface of one of the first cover plate and the second cover plate, arranging the other one of the first cover plate and the second cover plate on one side of the second adhesive film, enabling the first sealant to surround the first adhesive film, the battery piece and the second adhesive film, and enabling at least part of the first sealant to correspond to the exhaust area to form a component to be pressed; and
and heating and laminating to obtain the photovoltaic module.
In the above technical scheme, since the exhaust region of the mounting surface is provided with the groove, and one end of the groove extends to the edge of the cover plate, gas inside the assembly can be exhausted through the groove in the heating lamination process. Because first sealed glue is laid along the edge of apron and is cyclic annular, locate the one side of second glued membrane with another in first apron and the second apron after, the at least part of first sealed glue corresponds with the exhaust region, then after the heat lamination, recess can be filled to first sealed glue, forms seal structure with the apron, and the gas exhaust effect in the subassembly is better, then the photovoltaic module waterproof performance who obtains at last is better.
In a possible embodiment, in the assembly to be pressed, the distance between the outer edge of each of the first adhesive film and the second adhesive film and the inner edge of the first sealant is 3-5 mm.
In the technical scheme, at the in-process of heating lamination, first glued membrane and the melting of second glued membrane, first sealed gluey pressurized outwards extends, be close to the extruded in-process each other with first glued membrane, the recess discharge that the gas between second glued membrane and the first sealed glue passes through the exhaust area, further be favorable to improving photovoltaic module's waterproof performance, because the outward flange of first glued membrane and second glued membrane all is 3 ~ 5mm with the distance between the inward flange of first sealed glue, be difficult to cause the outward appearance bad.
In a possible embodiment, the second adhesive film is provided with a first through hole, and the other of the first cover plate and the second cover plate is provided with a second through hole;
after the second adhesive film is laid, the bus bar of the battery piece penetrates through the first through hole, a circle of second sealant is laid around the bus bar, and the second sealant is located in the first through hole and has a gap with the edge of the battery piece; then locate one side of second glued membrane with another in first apron and the second apron again to make another in first apron and the second apron contact with the sealed glue of second, the busbar wears to locate the second through-hole.
In the above technical scheme, because lay round second sealed glue around the busbar earlier, and the sealed glue of second is located first through-hole, locate one side of second glued membrane with another in first apron and the second apron again, and make another one in first apron and the second apron and the sealed contact of gluing of second, then at the in-process of heating laminating, the inside gas of subassembly can also be discharged through first through-hole and second through-hole, after the heating laminating, the sealed glue of second can with the mounting surface of the apron that corresponds, first glued membrane bonds, form seal structure, because the sealed glue of second has the clearance between the edge of gluing and battery piece, then can further improve photovoltaic module's waterproof performance.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a flow chart of a process for preparing a photovoltaic module according to embodiments of the present disclosure;
FIG. 2 is a schematic structural diagram of a first cover plate according to an embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of another first cover plate according to an embodiment of the present disclosure;
FIG. 4 is a schematic layout view of a first sealant and a first adhesive film according to an embodiment of the present disclosure;
FIG. 5 is a schematic view of the relationship between a first sealant and a venting area in accordance with an embodiment of the present application;
FIG. 6 is a schematic illustration of a second sealant application location in accordance with an embodiment of the present application;
FIG. 7 is an exploded view of a photovoltaic module according to an embodiment of the present application;
FIG. 8 is a cross-sectional view of an exhaust area in an embodiment of the present application.
Icon: 10-a photovoltaic module; 11-a first cover plate; 12-a second cover plate; 121-a second via; 13-a venting zone; 131-a groove; 14-a first sealant; 15-a first adhesive film; 16-a battery piece; 161-bus bar; 17-a second adhesive film; 171-a first via; 18-second sealant.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally found in use of products of the application, and are used only for convenience in describing the present application and for simplification of description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
An embodiment of the present application provides a manufacturing process of a photovoltaic module 10, please refer to fig. 1, which includes the following steps:
s1: a first cover plate 11 and a second cover plate 12 are provided.
Referring to fig. 2 and 3, the first cover plate 11 and the second cover plate 12 each include a mounting surface. The mounting surface of at least one of the first and second cover plates 11 and 12 has a gas discharge region 13, the gas discharge region 13 having a plurality of grooves 131, one end of the groove 131 extending to an edge of the cover plate.
That is, it may be that the mounting surface of the first cover plate 11 has the air discharge region 13, or the mounting surface of the second cover plate 12 has the air discharge region 13, or the mounting surfaces of both the first cover plate 11 and the second cover plate 12 have the air discharge region 13.
Wherein the mounting surface is a surface for contacting the adhesive film; the surface of the cover facing away from the mounting surface is generally a planar pile or a textured planar structure, which is the surface that is in contact with air.
The cover plate used as the upper cover plate is made of a transparent material, for example, glass, and the cover plate used as the lower cover plate may be a glass plate, a multilayer polymer laminate, a metal plate, or the like.
S2: a first sealant 14 is applied to a mounting surface of at least one of the first cover plate 11 and the second cover plate 12, and the first sealant 14 is applied in a ring shape along an edge of the cover plate (see fig. 4 and 5).
That is, the application of the first sealant 14 and the venting area 13 may be as follows:
(1) the first cover plate 11 has a vent area 13, the second cover plate 12 does not have the vent area 13, and the mounting surface of the second cover plate 12 is coated with a first sealant 14.
(2) The second cover plate 12 has a vent area 13, the first cover plate 11 does not have the vent area 13, and the mounting surface of the first cover plate 11 is coated with a first sealant 14.
(3) The first cover plate 11 has a vent area 13, the second cover plate 12 does not have the vent area 13, and the mounting surface of the first cover plate 11 is coated with a first sealant 14.
(4) The second cover plate 12 has a vent area 13, the first cover plate 11 is free of the vent area 13, and a mounting surface of the second cover plate 12 is coated with a first sealant 14.
(5) The first cover plate 11 and the second cover plate 12 are provided with air exhaust areas 13, and a first sealant 14 is applied to the mounting surface of one of the first cover plate 11 and the second cover plate 12.
(6) The first cover plate 11 and the second cover plate 12 are provided with air exhaust areas 13, and the mounting surfaces of the first cover plate 11 and the second cover plate 12 are coated with first sealant 14.
Illustratively, the first sealant 14 is butyl rubber.
S3: the first adhesive film 15, the battery piece 16 and the second adhesive film 17 are sequentially laid on the mounting surface of one of the first cover plate 11 and the second cover plate 12, the other one of the first cover plate 11 and the second cover plate 12 is arranged on one side of the second adhesive film 17, the first adhesive film 15, the battery piece 16 and the second adhesive film 17 are surrounded by the first sealant 14, and at least part of the first sealant 14 corresponds to the exhaust area 13 to form a component to be pressed.
For example, when the first adhesive film 15, the battery piece 16 and the second adhesive film 17 are sequentially laid on the mounting surface of the first cover plate 11, after the second adhesive film 17 is laid, the second cover plate 12 is laid on one side of the second adhesive film 17, and the mounting surface of the second cover plate 12 is close to the second adhesive film 17.
When the first adhesive film 15, the battery piece 16 and the second adhesive film 17 are sequentially laid on the mounting surface of the second cover plate 12, after the second adhesive film 17 is laid, the first cover plate 11 is laid on one side of the second adhesive film 17, and the mounting surface of the first cover plate 11 is close to the second adhesive film 17.
Illustratively, the distance between the edge of the battery piece 16 and the edge of the first cover plate 11 and the second cover plate 12 is 11-14 mm, such as 11mm, 12mm, 13mm or 14 mm. Therefore, after the lamination is heated, the distance between the edge of the battery piece 16 and the edges of the first cover plate 11 and the second cover plate 12 is more than or equal to 10.4 mm.
S4: the photovoltaic module 10 is obtained by heat lamination (see fig. 7).
Since the exhaust region 13 of the mounting surface has the groove 131 and the groove 131 extends to the edge of the cover plate, gas inside the assembly can be exhausted through the groove 131 during the heating lamination. Because the first sealant 14 is laid along the edge of the cover plate and is annular, the other one of the first cover plate 11 and the second cover plate 12 is arranged at one side of the second adhesive film 17, at least part of the first sealant 14 corresponds to the exhaust area 13, after the lamination is carried out, the first sealant 14 bonds the first cover plate 11 and the second cover plate 12 together and fills the groove 131 to form a sealing structure, the gas exhaust effect in the assembly is better, and the finally obtained photovoltaic assembly 10 is better in waterproof performance.
Generally, the heat lamination process generally includes an evacuation phase and a lamination phase, and the evacuation phase is accompanied by heating without lamination.
In the vacuum-pumping stage, the gas existing inside the module and the gas generated after the glue film is melted or reacted can be exhausted through the groove 131. The laminating stage generally comprises a low-pressure laminating stage and a high-pressure laminating stage, wherein in the low-pressure laminating stage, the adhesive film is adhered to the cover plate, the first sealant 14 is adhered to the cover plate, the adhesive film and the first sealant 14 are mutually extruded, and in the high-pressure laminating stage, the first sealant 14 can fill the groove 131 to form a sealing structure with the cover plate.
Note that at least a portion of the first sealant 14 corresponds to the vent region 13 means that a portion of the first sealant 14 corresponds to the vent region 13, and the entire first sealant 14 may correspond to the vent region 13.
Further, in some embodiments, the venting area 13 is entirely covered by the first sealant 14 (see fig. 4 and 5).
Since the exhaust region 13 is completely covered by the first sealant 14, the first adhesive film 15 and the second adhesive film 17 do not contact the exhaust region 13, and the first adhesive film 15 and the second adhesive film 17 are melted and do not overflow through the groove 131 of the exhaust region 13 during the heat lamination process.
Illustratively, the width of the venting area 13 is at least 2mm less than the application width of the first sealant 14, for example, the width of the venting area 13 is 2mm, 2.5mm, 3mm, 3.5mm or 4mm less than the application width of the first sealant 14.
Optionally, the application width of the first sealant 14 is 6 to 8mm, for example, 6mm, 7mm or 8 mm. After the heat lamination, the first sealant 14 extends to 8-10 mm, for example, 8mm, 9mm or 10 mm.
Wherein the first cover plate 11 and the second cover plate 12 are both square, optionally, the venting area 13 is provided at an edge area of a long side of the cover plate and/or an edge area of a short side of the cover plate. That is, the exhaust regions 13 may be provided individually in the long side regions of the cover (see fig. 2), may be provided individually in the short side regions of the cover, or may be provided with the exhaust regions 13 in both the short side regions and the long side regions of the cover (see fig. 3). Compared with the exhaust region 13 arranged at the edge region of the short side of the cover plate, the exhaust region 13 arranged at the edge region of the long side of the cover plate is more favorable for exhausting the gas inside the module through the groove 131. When the exhaust regions 13 are provided in both the long side and short side edge regions of the cover plate, the effect of exhausting gas inside the module can be further improved.
Illustratively, the grooves 131 extend in the width direction of the exhaust region 13 and are arranged in an array.
The grooves 131 are arranged in an array mode, so that the integral pressure bearing uniformity of the cover plate during installation can be improved, and the occurrence of local bursting or cracking is reduced.
Further, in some embodiments, the thickness of the cover plate having the venting area 13 is 1.6 to 2.5mm, the depth of the groove 131 is 0.3 to 0.5mm, and the width is 0.3 to 0.5 mm. The cross-sectional shape of the groove 131 may be a square shape, a circular arc shape (see fig. 8), or the like, and this embodiment is not limited thereto.
When the conditions that the thickness of the cover plate is 1.6-2.5 mm, the depth of the groove 131 is 0.3-0.5 mm, and the width is 0.3-0.5 mm are satisfied, the load strength of the cover plate can be well ensured, and gas in the assembly can be smoothly discharged.
Illustratively, the cover plate has a thickness of 1.6mm, 1.8mm, 2.0mm, 2.2mm, or 2.5 mm.
Illustratively, the depth of the groove 131 is 0.3mm, 0.4mm, or 0.5 mm.
Illustratively, the width of the groove 131 is 0.3mm, 0.4mm, or 0.5 mm.
Further, the distance f between the edges of two adjacent grooves 131 close to each other is 0.5-2 mm. This arrangement can better ensure that after step S3, the first sealant 14 does not affect the gas inside the module by the first sealant 14 filling the groove 131 due to the self weight of the cover plate.
Illustratively, the distance between the mutually close edges of two adjacent grooves 131 is 0.5mm, 0.8mm, 1.0mm, 1.2mm, 1.5mm, 1.8mm or 2 mm.
Further, in the assembly to be pressed, the distance between the edge of each of the first adhesive film 15 and the second adhesive film 17 and the inner edge of the first sealant 14 is 3-5 mm (refer to fig. 4).
In the heating laminating process, the first adhesive film 15 and the second adhesive film 17 are melted, the first sealant 14 is pressed to extend outwards, and the gas among the first adhesive film 15, the second adhesive film 17 and the first sealant 14 is discharged through the groove 131 of the exhaust area 13 in the process of mutually approaching and extruding, so that the waterproof performance of the photovoltaic module 10 is improved. Because the distance between the outer edge of the first adhesive film 15 and the inner edge of the second adhesive film 17 and the inner edge of the first sealant 14 is 3-5 mm, the appearance is not easy to cause poor.
Illustratively, the distance between the outer edge of each of the first adhesive film 15 and the second adhesive film 17 and the inner edge of the first sealant 14 is 3mm, 4mm, or 5 mm.
Further, the second adhesive film 17 is formed with a first through hole 171, and the other of the first cover plate 11 and the second cover plate 12 is formed with a second through hole 121. Wherein, the second through hole 121 is used for the bus bar 161 of the battery piece 16 to pass through and connect with the junction box on the surface of the cover plate.
That is, if the first cover plate 11 is placed on one side of the second adhesive film 17 after the second adhesive film 17 is laid, the second through hole 121 is on the first cover plate 11, and the junction box is disposed on the surface of the first cover plate 11; if the second cover plate 12 is placed on one side of the second adhesive film 17 after the second adhesive film 17 is laid, the second through hole 121 is formed in the second cover plate 12, and the junction box is disposed on the surface of the second cover plate 12.
After the second adhesive film 17 is laid, the bus bar 161 of the battery piece 16 is inserted into the first through hole 171, a circle of second adhesive 18 is laid around the bus bar 161, and the second adhesive 18 is located in the first through hole 171 and has a gap with the edge of the battery piece 16 (see fig. 6); then, the other of the first cover plate 11 and the second cover plate 12 is disposed on one side of the second adhesive film 17, and the other of the first cover plate 11 and the second cover plate 12 is in contact with the second sealant 18, and the bus bar 161 is disposed through the second through hole 121.
Because a circle of second sealant 18 is laid around the bus bar 161, the second sealant 18 is located in the first through hole 171, and then the other of the first cover plate 11 and the second cover plate 12 is arranged on one side of the second adhesive film 17, and the other of the first cover plate 11 and the second cover plate 12 is in contact with the second sealant 18, in the heating laminating process, gas in the assembly can be discharged through the first through hole 171 and the second through hole 121, after the heating laminating process, the second sealant 18 can be adhered to the mounting surface of the corresponding cover plate and the first adhesive film 15 to form a sealing structure, and because a gap is formed between the edges of the second sealant 18 and the battery piece 16, the waterproof performance of the photovoltaic assembly 10 can be further improved.
Illustratively, the second sealant 18 is applied in a ring shape with an outer ring radius k, and the second through hole 121 is a circular hole with a radius h.
Optionally, the distance between the outer edge of the second sealant 18 and the wall of the first through hole 171 is 2-3 mm, such as 2mm, 2.5mm or 3 mm.
Optionally, the distance between the outer edge of the second sealant 18 and the edge of the battery piece 16 is 3-4 mm, such as 3mm, 3.5mm or 4 mm.
The present embodiment also provides a photovoltaic module 10 (see fig. 7) manufactured by the above-described manufacturing process.
The photovoltaic module 10 of the embodiment of the present application includes: the battery cover comprises a first cover plate 11, a first adhesive film 15, a battery piece 16, a second adhesive film 17 and a second cover plate 12 which are sequentially stacked. Wherein at least one of the first cover plate 11 and the second cover plate 12 has a gas discharge region 13, the gas discharge region 13 has a plurality of grooves 131, and one end of the groove 131 extends to an edge of the cover plate.
The first cover plate 11 and the second cover plate 12 are bonded through first sealant 14, and the first sealant 14 is arranged along the edge of the cover plate and annularly arranged around a first adhesive film 15, a battery piece 16 and a second adhesive film 17; at least a portion of the first sealant 14 conforms to the venting region 13.
Because first apron 11 and second apron 12 bond through first sealed glue 14, first sealed glue 14 sets up and is cyclic annular setting around first glued membrane 15, battery piece 16 and second glued membrane 17 along the edge of apron, then inside first sealed glue 14 can avoid steam to enter into photovoltaic module 10 from the edge, improves photovoltaic module 10's waterproof performance. In addition, the exhaust region 13 of the cover plate is provided with a groove 131, the groove 131 extends to the edge of the cover plate, and at least part of the first sealant 14 is attached to the exhaust region 13, so that when the photovoltaic module 10 is formed, in the heating laminating process, gas in the module can be conveniently exhausted from the groove 131, and the waterproof performance of the photovoltaic module 10 is improved.
Further, in some embodiments, the venting area 13 is entirely covered by the first sealant 14 (see fig. 4 and 5).
Since the exhaust region 13 is completely covered by the first sealant 14, the first adhesive film 15 and the second adhesive film 17 do not contact the exhaust region 13, and the first adhesive film 15 and the second adhesive film 17 are melted and do not overflow through the groove 131 of the exhaust region 13 during the heat lamination process.
Illustratively, the width of the venting area 13 is at least 2mm less than the width of the first sealant 14, for example, the width of the venting area 13 is 2mm, 2.5mm, 3mm, 3.5mm or 4mm less than the width of the first sealant 14.
In addition, it should be noted that other position characteristics and structural characteristics related to the first cover plate 11, the second cover plate 12, the first sealant 14, the venting area 13 and the groove 131 are described in the above manufacturing process, and are not described again here.
Further, the photovoltaic module 10 of the embodiment of the application, first through-hole 171 has been seted up to the second glued membrane 17, the second through-hole 121 has been seted up to the second apron 12, first through-hole 171 and second through-hole 121 are worn to locate by the busbar 161 of battery piece 16, sealed glue 18 of second has in the first through-hole 171, sealed glue 18 ring of second locate the busbar 161 and with the battery piece 16 the edge between have the clearance, and sealed glue 18 of second all bonds with second apron 12 and first glued membrane 15.
Because the second sealant 18 is annularly arranged on the bus bar 161 and has a gap with the edge of the cell 16, and the second sealant 18 is bonded with the second cover plate 12 and the first adhesive film 15, the water vapor is not easy to damage the cell 16 through the first through hole 171 and the second through hole 121, and the waterproof performance of the photovoltaic module 10 can be further improved.
Optionally, the distance between the outer edge of the second sealant 18 and the wall of the first through hole 171 is 2-3 mm, such as 2mm, 2.5mm or 3 mm. Optionally, the distance between the second sealant 18 and the edge of the battery piece 16 is 3-4 mm, such as 3mm, 3.5mm or 4 mm.
Example 1
The embodiment provides a manufacturing process of a photovoltaic module 10, which includes the following steps:
(1) a first cover plate 11 is provided.
Wherein the first cover plate 11 is used as a lower cover plate, the mounting surface of the first cover plate 11 is provided with a gas exhaust area 13, and the gas exhaust area 13 is positioned on the long side of the first cover plate 11. In addition, the exhaust region 13 has a plurality of grooves 131, and the grooves 131 extend to the edge of the first cover plate 11 in the width direction of the exhaust region 13.
(2) A second cover plate 12 is provided.
The second cover plate 12 is used as an upper cover plate, the second cover plate 12 has a second through hole 121, the first sealant 14 is applied to the mounting surface of the second cover plate 12, and the first sealant 14 is applied annularly along the edge of the cover plate.
(3) The first adhesive film 15, the battery piece 16 and the second adhesive film 17 are sequentially laid on the mounting surface of the first cover plate 11, wherein the second adhesive film 17 has a first through hole 171, and the bus bar 161 of the battery piece 16 passes through the first through hole 171.
(4) A bead of the second sealant 18 is applied around the bus bar 161, and the second sealant 18 is located in the first through hole 171 with a gap from the edge of the battery cell 16.
(5) The second cover plate 12 is placed on one side of the second adhesive film 17, the bus bar 161 penetrates through the second through hole 121, the first sealant 14 surrounds the first adhesive film 15, the battery piece 16 and the second adhesive film 17, and the first sealant 14 corresponds to the exhaust area 13 to form a to-be-pressed assembly.
(6) The lamination is performed by applying pressure to the second cover sheet 12 to form the photovoltaic module 10.
Example 2
The embodiment provides a manufacturing process of a photovoltaic module 10, which includes the following steps:
(1) a first cover plate 11 is provided.
The first cover plate 11 serves as an upper cover plate, the first cover plate 11 is provided with a second through hole 121, the mounting surface of the first cover plate 11 is provided with a gas exhaust area 13, and the gas exhaust area 13 is located on the long side of the first cover plate 11. In addition, the exhaust region 13 has a plurality of grooves 131, and the grooves 131 extend to the edge of the first cover plate 11 in the width direction of the exhaust region 13.
(2) A second cover plate 12 is provided.
The second cover plate 12 is used as a lower cover plate, the first sealant 14 is laid on the mounting surface of the second cover plate 12, and the first sealant 14 is laid along the edge of the cover plate and is annular.
(3) And laying a first adhesive film 15, a battery piece 16 and a second adhesive film 17 on the mounting surface of the second cover plate 12 in sequence, wherein the second adhesive film 17 is provided with a first through hole 171, and the bus bar 161 of the battery piece 16 passes through the first through hole 171.
(4) A bead of the second sealant 18 is applied around the bus bar 161, and the second sealant 18 is located in the first through hole 171 with a gap from the edge of the battery cell 16.
(5) The first cover plate 11 is placed on one side of the second adhesive film 17, the bus bar 161 penetrates through the second through hole 121, the first sealant 14 surrounds the first adhesive film 15, the battery piece 16 and the second adhesive film 17, and the first sealant 14 corresponds to the exhaust area 13 to form a to-be-pressed assembly. Wherein, the distance between the first sealant 14 and the first adhesive film 15 and the second adhesive film 17 is 3 mm.
(6) The lamination is performed by applying pressure to the first cover sheet 11 to form the photovoltaic module 10.
Example 3
The embodiment provides a manufacturing process of a photovoltaic module 10, which includes the following steps:
(1) a first cover plate 11 is provided.
Wherein the first cover plate 11 is used as an upper cover plate, the mounting surface of the first cover plate 11 is provided with a gas exhaust area 13, and the gas exhaust area 13 is positioned on the long side of the first cover plate 11. In addition, the exhaust region 13 has a plurality of grooves 131, and the grooves 131 extend to the edge of the first cover plate 11 in the width direction of the exhaust region 13. In addition, the first sealant 14 is applied to the mounting surface of the first cover plate 11, and the first sealant 14 is applied along the edge of the cover plate and is in a ring shape, and covers the exhaust region 13.
(2) A second cover plate 12 is provided.
Wherein the second cover plate 12 is used as a lower cover plate, and the second cover plate 12 has a second through hole 121.
(3) The first adhesive film 15, the battery piece 16 and the second adhesive film 17 are sequentially laid on the mounting surface of the first cover plate 11, wherein the second adhesive film 17 has a first through hole 171, and the bus bar 161 of the battery piece 16 passes through the first through hole 171.
(4) A bead of the second sealant 18 is applied around the bus bar 161, and the second sealant 18 is located in the first through hole 171 with a gap from the edge of the battery cell 16.
(5) The second cover plate 12 is placed on one side of the second adhesive film 17, the bus bar 161 penetrates through the second through hole 121, the first sealant 14 surrounds the first adhesive film 15, the battery piece 16 and the second adhesive film 17, and the first sealant 14 corresponds to the exhaust area 13 to form a to-be-pressed assembly. Wherein, the distance between the first sealant 14 and the first adhesive film 15 and the second adhesive film 17 is 3 mm.
(6) The lamination is performed by applying pressure to the second cover sheet 12 to form the photovoltaic module 10.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (11)

1. A photovoltaic module, comprising: the battery pack comprises a first cover plate, a first adhesive film, a battery piece, a second adhesive film and a second cover plate which are sequentially stacked;
wherein at least one of the first and second cover plates has a venting area having a plurality of grooves with one end extending to an edge of the cover plate;
the first cover plate and the second cover plate are bonded through first sealant, and the first sealant is arranged along the edge of the cover plate and annularly arranged around the first adhesive film, the battery piece and the second adhesive film; at least part of the first sealant is attached to the exhaust region.
2. The photovoltaic module of claim 1 wherein the vent area is entirely covered by the first sealant.
3. The photovoltaic module of claim 2 wherein the vent region has a width at least 2mm less than the width of the first sealant.
4. The photovoltaic module according to any one of claims 1 to 3, wherein the exhaust region is provided in an edge region of a long side of the cover plate; and/or the exhaust area is arranged at the edge area of the short side of the cover plate.
5. The photovoltaic module according to any one of claims 1 to 3, wherein the thickness of the cover plate having the exhaust region is 1.6 to 2.5mm, the depth of the groove is 0.3 to 0.5mm, and the width is 0.3 to 0.5 mm.
6. The photovoltaic module according to claim 5, wherein the distance between the mutually close edges of two adjacent grooves is 0.5-2 mm.
7. The photovoltaic module according to any one of claims 1 to 3, wherein the second adhesive film has a first through hole, the second cover plate has a second through hole, the bus bar of the battery piece is disposed through the first through hole and the second through hole, the first through hole has a second sealant therein, the second sealant is disposed around the bus bar and has a gap with the edge of the battery piece, and the second sealant is bonded to both the second cover plate and the first adhesive film.
8. The photovoltaic module according to claim 7, wherein the distance between the outer edge of the second sealant and the wall of the first through hole is 2-3 mm, and/or the distance between the second sealant and the edge of the cell is 3-4 mm.
9. A manufacturing process of a photovoltaic module is characterized by comprising the following steps:
providing a first cover plate and a second cover plate, each of the first cover plate and the second cover plate including a mounting surface, wherein the mounting surface of at least one of the first cover plate and the second cover plate has a vent region with a plurality of grooves, one end of the grooves extending to an edge of the cover plate;
laying a first sealant on the mounting surface of at least one of the first cover plate and the second cover plate, wherein the first sealant is laid along the edge of the cover plate and is annular;
sequentially laying a first adhesive film, a battery piece and a second adhesive film on the mounting surface of one of the first cover plate and the second cover plate, arranging the other one of the first cover plate and the second cover plate on one side of the second adhesive film, enabling the first adhesive film, the battery piece and the second adhesive film to be surrounded by the first adhesive film, and enabling at least part of the first adhesive film to correspond to the exhaust area to form a component to be pressed; and
and carrying out heating lamination to obtain the photovoltaic module.
10. The manufacturing process of the photovoltaic module according to claim 9, wherein in the module to be pressed, the distance between the outer edge of the first adhesive film and the inner edge of the first sealant is 3-5 mm.
11. The manufacturing process of the photovoltaic module according to claim 9, wherein the second adhesive film is provided with a first through hole, and the other of the first cover plate and the second cover plate is provided with a second through hole;
after the second adhesive film is laid, the bus bar of the battery piece penetrates through the first through hole, a circle of second sealant is laid around the bus bar, the second sealant is located in the first through hole, and a gap is formed between the second sealant and the edge of the battery piece; and then the other one of the first cover plate and the second cover plate is arranged on one side of the second adhesive film, the other one of the first cover plate and the second cover plate is in contact with the second sealant, and the bus bar penetrates through the second through hole.
CN202111316016.XA 2021-11-08 2021-11-08 Photovoltaic module and manufacturing process thereof Pending CN114023836A (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115260922A (en) * 2022-08-01 2022-11-01 晶科能源股份有限公司 Adhesive film and photovoltaic module

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001177119A (en) * 1999-12-16 2001-06-29 Canon Inc Manufacturing method and device of solar cell module
CN202930401U (en) * 2012-08-03 2013-05-08 深圳市拓日新能源科技股份有限公司 Solar battery packaging structure and equipment provided with same
CN112038431A (en) * 2020-08-14 2020-12-04 泰州隆基乐叶光伏科技有限公司 Photovoltaic module and packaging method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001177119A (en) * 1999-12-16 2001-06-29 Canon Inc Manufacturing method and device of solar cell module
CN202930401U (en) * 2012-08-03 2013-05-08 深圳市拓日新能源科技股份有限公司 Solar battery packaging structure and equipment provided with same
CN112038431A (en) * 2020-08-14 2020-12-04 泰州隆基乐叶光伏科技有限公司 Photovoltaic module and packaging method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115260922A (en) * 2022-08-01 2022-11-01 晶科能源股份有限公司 Adhesive film and photovoltaic module
CN115260922B (en) * 2022-08-01 2023-10-31 晶科能源股份有限公司 Adhesive film and photovoltaic module

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