WO2023092857A1 - 一种封装胶膜 - Google Patents

一种封装胶膜 Download PDF

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Publication number
WO2023092857A1
WO2023092857A1 PCT/CN2022/073956 CN2022073956W WO2023092857A1 WO 2023092857 A1 WO2023092857 A1 WO 2023092857A1 CN 2022073956 W CN2022073956 W CN 2022073956W WO 2023092857 A1 WO2023092857 A1 WO 2023092857A1
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WO
WIPO (PCT)
Prior art keywords
pattern
adhesive film
encapsulation
contact
preset angle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2022/073956
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English (en)
French (fr)
Inventor
陈祥
吴海云
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hangzhou First Applied Material Co Ltd
Original Assignee
Hangzhou First Applied Material Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hangzhou First Applied Material Co Ltd filed Critical Hangzhou First Applied Material Co Ltd
Priority to US18/713,689 priority Critical patent/US12557400B2/en
Priority to EP22896961.4A priority patent/EP4425576A4/en
Publication of WO2023092857A1 publication Critical patent/WO2023092857A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
    • H10F19/80—Encapsulations or containers for integrated devices, or assemblies of multiple devices, having photovoltaic cells
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
    • C09J2203/322—Applications of adhesives in processes or use of adhesives in the form of films or foils for the production of solar panels
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
    • C09J2203/326—Applications of adhesives in processes or use of adhesives in the form of films or foils for bonding electronic components such as wafers, chips or semiconductors
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/20—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/20—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself
    • C09J2301/206—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself the adhesive layer comprising non-adhesive protrusions
    • 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

Definitions

  • the invention relates to photovoltaic encapsulation technology, in particular to an encapsulation adhesive film.
  • Photovoltaic modules are the core components in the process of photovoltaic power generation.
  • Photovoltaic modules are usually composed of photovoltaic electrodes and substrates arranged on both sides of the cells, and the cells and substrates are encapsulated by an encapsulation film.
  • the encapsulation film plays an important role in the encapsulation and subsequent use of photovoltaic modules, and the encapsulation quality of the encapsulation film directly affects the life of photovoltaic modules.
  • the current electro-engraving random embossing pattern on the packaging film has poor adhesion to photovoltaic substrates such as glass, and is prone to slippage during the speed-up process of the production line. Rolling and slippage will also occur, resulting in offset problems during module laying, and poor appearance problems such as cell offset, paralleling, air bubbles, and lack of glue after lamination.
  • the embodiment of the present application provides an encapsulating adhesive film, which solves the problem of offset of the encapsulating adhesive film in the process of laying components in the prior art, and realizes the improvement of the adhesion of the encapsulating adhesive film on substrates such as glass during the laying process. , to avoid rolling slippage between the encapsulation adhesive film and the grid lines on the multi-busbar cell, and to ensure the technical effect of the photovoltaic module encapsulation yield rate.
  • An embodiment of the present application provides an encapsulating adhesive film, including an adhesive film body, and the encapsulating adhesive film further includes a surface pattern provided on at least one surface of the adhesive film body, and the surface pattern includes:
  • the first pattern extends substantially along the first direction
  • the second pattern extends substantially along the second direction
  • the first direction and the second direction intersect at a preset angle, and the preset angle is greater than 0° and less than 180°;
  • the surface patterns include at least one first pattern and at least one second pattern.
  • the thickness of the film body is 0.3-2.0mm
  • the length of the first pattern is 1-5mm and the width is 0.05-3mm
  • the length of the second pattern is 1-5mm and the width is 0.05-3mm.
  • the aspect ratio of the first pattern is (1.5-100):1, and the aspect ratio of the second pattern is (1.5-100):1; when If the preset angle is greater than 90° and less than 180°, the aspect ratio of the first pattern is (1.5-10):1, and the aspect ratio of the second pattern is (1.5-10):1.
  • first pattern and the second pattern are in contact with each other.
  • one end of the first pattern is in contact with one end of the second pattern, one end of the first pattern is in contact with the midpoint of the second pattern, or the midpoint of the first pattern is in contact with the midpoint of the second pattern.
  • first pattern is shape distribution, shaped distribution or shape distribution.
  • the adjacent pattern units are connected to each other, so that the surface pattern has a cross network structure.
  • first pattern and the second pattern are separated from each other.
  • first pattern and the second pattern are protrusions.
  • At least one of the first pattern or the second pattern is an arc-shaped protrusion, and the maximum height of the arc-shaped protrusion is 0.05-1.5mm.
  • At least one of the first pattern or the second pattern is a table-shaped protrusion, and the height of the table-shaped protrusion is 0.05-1.5 mm.
  • this application adopts the surface pattern on the surface of the packaging film, it effectively solves the technical problems in the prior art, realizes the increase of the adhesion of the packaging film on the photovoltaic substrate, and avoids the relationship between the packaging film and the multi-busbar battery.
  • the grid lines on the chip roll and slip, which reduces the offset problem that occurs during the laying of photovoltaic modules.
  • FIG. 1 is a schematic diagram of an encapsulation film in an implementation mode of the present application
  • FIG. 2 is a schematic diagram of an encapsulation film in another implementation of the present application.
  • Fig. 3 is a schematic diagram of an encapsulation film in another implementation of the present application.
  • FIG. 4 is a schematic diagram of an encapsulation film in another implementation of the present application.
  • FIG. 5 is a schematic diagram of an encapsulation film in another implementation of the present application.
  • Fig. 6 is a schematic longitudinal sectional view of the first pattern in an implementation manner of the present application.
  • Fig. 7 is a schematic longitudinal sectional view of the first pattern in another implementation of the present application.
  • Fig. 8 is a schematic longitudinal sectional view of the first pattern in another implementation of the present application.
  • FIG. 9 is a schematic diagram of an encapsulation film in another implementation manner of the present application.
  • FIG. 10 is a schematic diagram of an encapsulation film in another implementation manner of the present application.
  • FIG. 11 is a schematic diagram of an encapsulation film in another implementation manner of the present application.
  • packaging film 100 first direction 101, second direction 102, preset angle ⁇ , thickness H, height L, length a, width b; film body 11, surface pattern 12, first pattern 121, second Two pattern 122.
  • the embodiment of the present application provides an encapsulation adhesive film 100, which solves the problem of poor appearance of the components after laying due to poor adhesion between the encapsulation adhesive film and the photovoltaic substrate in the prior art, and avoids the encapsulation film and multi-host
  • the grid lines on the grid cells roll and slip, and the surface pattern 12 is arranged on the surface of the encapsulation adhesive film 100 so that the encapsulation adhesive film 100 does not shift during the laying process of photovoltaic modules.
  • the embodiment in this application provides an encapsulating adhesive film 100 , which is specifically a photovoltaic encapsulating adhesive film. As shown in FIG. 1 , it includes an adhesive film body 11 and a surface pattern 12 disposed on at least one surface of the adhesive film body 11 .
  • the surface pattern 12 includes at least two identical or different pattern units.
  • the pattern unit specifically includes a first pattern 121 and a second pattern 122 , the first pattern 121 basically extends along the first direction 101 ; the second pattern 122 basically extends along the second direction 102 .
  • the first direction 101 and the second direction 102 intersect at a predetermined angle ⁇ , and the predetermined angle ⁇ is greater than 0° and less than 180°.
  • the surface pattern 12 is provided on the surface of the encapsulation film 100, which can increase the adhesion between the encapsulation film 100 and the substrate during the laying of the components, and solve the problem of poor adhesion between the encapsulation film and the substrate in the prior art, which is prone to deviation. shifting problem.
  • increasing the surface pattern 12 can also increase the peeling performance between the molding film 100 and the mold, ensure the integrity of the packaging film 100 after peeling, and solve the problem of difficult peeling of the packaging film in the prior art after molding.
  • the surface pattern 12 includes at least one pattern unit consisting of a first pattern 121 and a second pattern 122, the first pattern 121 and the second pattern 122 are basically strip-shaped, the first pattern 121 extends basically along the first direction 101, and the second pattern 122 basically extends along the second direction 102, the angle between the first direction 101 and the second direction 102 is a preset angle ⁇ , and the preset angle ⁇ only needs to satisfy that the first direction 101 and the second direction 102 are not parallel or coincident with each other That is, generally speaking, in the case of ensuring the technical effect, the first direction 101 and the second direction 102 are set to be substantially perpendicular.
  • the thickness H of the adhesive film body 11 is 0.3-2.0 mm.
  • the encapsulation film 100 is provided with a convex structure, if the thickness H of the film body 11 is set as the same as the existing film without protrusions, the glue content of the film will inevitably be too large, which will not only increase the Production cost, after the component is packaged, the bonding ability will decrease due to the adhesive layer, which will affect the life of the component.
  • the thickness H of the adhesive film body 11 can also be set according to actual production requirements.
  • the thickness H of the film body 11 is in the range of 0.3-2.0 mm, which is a suitable thickness H range for this application, which can not only meet the requirements of the glue content of the packaging film 100, but also reduce the production cost as much as possible and improve the production efficiency.
  • the length a of the first pattern 121 is 1-5 mm and the width b is 0.05-3 mm; the length a of the second pattern 122 is 1-5 mm and the width b is 0.05-3 mm.
  • the size of the first pattern 121 and the second pattern 122 is limited to ensure that the first pattern 121 and the second pattern 122 have a certain length a and width b, so as to ensure that the contact area between the encapsulating adhesive film 100 and the substrate can be enhanced. , so as to ensure the adhesion between the encapsulation film 100 and the substrate during laying, and ensure that problems such as slippage do not occur.
  • the size of the first pattern 121 and the second pattern 122 should not be too large.
  • the number of the first pattern 121 and the second pattern 122 per unit area of the packaging film 100 is small.
  • the contact area between the encapsulant film 100 and the substrate is small, which reduces the adhesion of the encapsulant film 100 on the substrate, resulting in the problem that the encapsulant film 100 is easy to slip and cannot be solved.
  • the size of the first decorative pattern 121 and the second decorative pattern 122 should not be too small.
  • first decorative pattern 121 and the second decorative pattern 122 are too small, the number of the first decorative pattern 121 and the second decorative pattern 122 per unit area of the packaging film 100 is large, increasing The difficulty of peeling off the encapsulating adhesive film 100 from the encapsulating film roll will adversely affect the integrity of the encapsulating adhesive film 100 .
  • the aspect ratio of the first pattern is (1.5-100): 1
  • the aspect ratio of the second pattern is (1.5-100): 1.
  • the aspect ratio of the first pattern is (1.5-10):1
  • the aspect ratio of the second pattern is (1.5-10):1.
  • the angle between the first pattern and the second pattern is greater than 90°, the space occupied by the entire pattern unit composed of the first pattern and the second pattern is larger, if the length and width of the first pattern and the second pattern are If the ratio is still large, the proportion of the pattern area in the unit film area will be small, reducing the contact area between the packaging film and the substrate, which will reduce the adhesion between the packaging film and the substrate during laying, and will easily cause slippage Therefore, when the angle between the first pattern and the second pattern is large, the aspect ratio of the first pattern or the first pattern is limited to a small range to ensure that the encapsulation film and the substrate The contact area between them ensures the adhesion between the two.
  • the first pattern 121 and the second pattern 122 are in contact with each other.
  • they may directly contact each other to form an intersection point or intersection point.
  • the first pattern 121 and the second pattern 122 contact each other and form an intersection or cross point, the first pattern 121 and the second pattern 122 are connected to each other and support each other, increasing the structural stability of the first pattern 121 and the second pattern 122 To ensure that the first pattern 121 and the second pattern 122 are less prone to misalignment and other situations that are likely to reduce the yield rate.
  • one end of the first pattern 121 is in contact with one end of the second pattern 122, one end of the first pattern 121 is in contact with the midpoint of the second pattern 122, or the midpoint of the first pattern 121 is in contact with the second pattern 122.
  • the midpoints of 122 touch each other.
  • the specific situation that the first pattern 121 and the second pattern 122 are in contact with each other may be that one end of the first pattern 121 and one end of the second pattern 122 are in contact with each other, or one end of one of the first pattern 121 or the second pattern 122 Any point of the first pattern 121 other than the end point may be in contact with another pattern except the end point, and any point of the second pattern 122 other than the end point may be in contact with each other.
  • the contact between the first pattern 121 and the second pattern 122 is distributed in a " ⁇ " shape (as shown in FIG. shaped distribution (as shown in Figure 3) or shape distribution (as shown in Figure 4).
  • the first pattern 121 and the second pattern 122 are set to be in contact with each other and form an intersection point or cross point.
  • the first pattern 121 and the second pattern 122 can be set as follows, one end of the first pattern 121 and one end of the second pattern 122 are in contact with each other, or one end of the first pattern 121 and the midpoint of the second pattern 122 are in contact with each other.
  • the contact may also be that the midpoint of the first pattern 121 and the midpoint of the second pattern 122 are in contact with each other.
  • the mutual arrangement of the first pattern 121 and the second pattern 122 can make the first pattern 121 and the second pattern 122 support each other, and ensure the structural integrity of the first pattern 121 and the second pattern 122 during the manufacturing process.
  • adjacent pattern units are connected to each other, so that the surface pattern 12 has a cross network structure.
  • the adjacent first patterns 121 may directly contact each other end to end, and the adjacent second patterns 122 may also directly contact each other end to end, finally forming a cross pattern.
  • Surface pattern 12 of network structure may directly contact each other end to end, and the adjacent second patterns 122 may also directly contact each other end to end, finally forming a cross pattern.
  • the first pattern 121 and the second pattern 122 are separated from each other.
  • the first pattern 121 and the second pattern 122 may also not be in contact with each other, that is, be in a separated state.
  • the first pattern 121 and the second pattern 122 are protrusions.
  • the encapsulating film 100 needs to be bonded to substrates made of glass and other materials before encapsulating photovoltaic modules.
  • the components are developing in a larger size direction, and the encapsulating film and substrate are also developing in a larger size direction.
  • the surrounding area of the encapsulation film is often bonded to the substrate first. At this time, there is a problem that after the encapsulation film is bonded to the substrate, the distance between the encapsulation film and the substrate There is a large amount of air in some positions that cannot be discharged in time.
  • the air is exhausted by means of air extraction, but due to the development of the components in the direction of large size, if the air is only exhausted by means of air extraction, the exhaust efficiency is low. And as the pumping progresses, the encapsulating film and the substrate continue to stick together, and eventually there will still be some air in the center of the substrate and other positions far from the air pumping device that cannot be completely discharged, and there will be air between the encapsulating film and the substrate. Bubbles, the existence of these bubbles will affect the quality of photovoltaic modules after lamination, reducing the quality and service life of photovoltaic modules. Certain protruding structures are provided on the adhesive film body 11, and there are certain gaps between the protruding structures.
  • gaps can provide exhaust channels for the gas in the process of bonding the packaging adhesive film 100 to the substrate, and can completely discharge the air. To ensure the bonding effect between the adhesive film and the substrate, on the other hand, it can also reduce the slippage of the adhesive film on the substrate.
  • At least one of the first pattern 121 or the second pattern 122 is a table-shaped protrusion, and the height L of the table-shaped protrusion is 0.2-1.5 mm.
  • At least one of the first pattern 121 or the second pattern 122 is a cuboid protrusion, and the height L of the cuboid protrusion is 0.2-1.5 mm.
  • At least one of the first pattern 121 or the second pattern 122 is an arc-shaped protrusion, and the maximum height L of the arc-shaped protrusion is 0.2-1.5 mm.
  • the top surfaces of the first pattern 121 and the second pattern 122 may be horizontal or curved.
  • the height L of the first pattern 121 and the second pattern 122 should not be too high, otherwise, due to the lack of glue in the pattern layer formed by the first pattern 121 and the second pattern 122, there will be too much glue in the packaging film 100 as a whole, which will affect the packaging of subsequent components.
  • the height L of the first pattern 121 and the second pattern 122 is preferably not greater than the thickness H of the adhesive film body 11 .
  • an encapsulating adhesive film 100 includes an adhesive film body 11 , one surface of the adhesive film body 11 is provided with a surface pattern 12 , and the surface pattern 12 and the adhesive film body 11 are integrally formed.
  • the surface pattern 12 includes a pattern unit composed of a first pattern 121 and a second pattern 122, the first pattern 121 extends along the first direction 101, the second pattern 122 extends along the second direction 102, and the first direction 101 and the second direction 102 are mutually Vertical, that is, the angle between the first direction 101 and the second direction 102 is a preset angle ⁇ , and the preset angle ⁇ is 90°.
  • the first pattern 121 and the second pattern 122 are distributed in a similar " ⁇ " shape without contact with each other.
  • the first pattern 121 is a strip-shaped protrusion along the first direction 101 that is arc-shaped in longitudinal section (as shown in FIG. 7 ), the longitudinal section of the second pattern 122 along the second direction 102 is the same arc-shaped strip-shaped protrusion as the first pattern 121 .
  • the thickness H of the film body 11 is 0.3 mm
  • the length a of the first decorative pattern 121 is 1.0 mm
  • the width b of the first decorative pattern 121 is 0.05 mm
  • the height L of the first decorative pattern 121 is 0.05 mm
  • the length of the second decorative pattern 122 is 0.05 mm.
  • a is 1.0 mm
  • the width b of the second pattern 122 is 0.05 mm
  • the height L of the second pattern 122 is 0.05 mm.
  • an encapsulating adhesive film 100 includes an adhesive film body 11 , one surface of the adhesive film body 11 is provided with a surface pattern 12 , and the surface pattern 12 and the adhesive film body 11 are integrally formed.
  • the surface pattern 12 includes a pattern unit composed of a first pattern 121 and a second pattern 122, the first pattern 121 extends along the first direction 101, the second pattern 122 extends along the second direction 102, and the first direction 101 and the second direction 102 are mutually Vertical, that is, the angle between the first direction 101 and the second direction 102 is a preset angle ⁇ , and the preset angle ⁇ is 90°.
  • the first pattern 121 and the second pattern 122 are in contact with each other.
  • the first pattern 121 is an arc-shaped strip-shaped protrusion along the longitudinal section of the first direction 101 (as shown in Figure 7), and the longitudinal section of the second pattern 122 along the second direction 102 is the same as the first pattern 121 The same curved bar raised.
  • the thickness H of the adhesive film body 11 is 1.0mm
  • the length a of the first decorative pattern 121 is 5.0mm
  • the width b of the first decorative pattern 121 is 3.0mm
  • the height L of the first decorative pattern 121 is 1.5mm
  • the length of the second decorative pattern 122 a is 5.0 mm
  • the width b of the second pattern 122 is 3.0 mm
  • the height L of the second pattern 122 is 1.5 mm.
  • an encapsulating adhesive film 100 includes an adhesive film body 11 , one surface of the adhesive film body 11 is provided with a surface pattern 12 , and the surface pattern 12 and the adhesive film body 11 are integrally formed.
  • the surface pattern 12 includes a pattern unit composed of a first pattern 121 and a second pattern 122, the first pattern 121 extends along the first direction 101, the second pattern 122 extends along the second direction 102, and the first direction 101 and the second direction 102 are mutually Vertical, that is, the angle between the first direction 101 and the second direction 102 is a preset angle ⁇ , and the preset angle ⁇ is 90°.
  • the first pattern 121 and the second pattern 122 are in contact with each other.
  • the first pattern 121 is an arc-shaped strip-shaped protrusion along the longitudinal section of the first direction 101 (as shown in Figure 7), and the longitudinal section of the second pattern 122 along the second direction 102 is the same as the first pattern 121 The same curved bar raised.
  • the thickness H of the adhesive film body 11 is 1.5 mm
  • the length a of the first decorative pattern 121 is 2.0 mm
  • the width b of the first decorative pattern 121 is 0.1 mm
  • the height L of the first decorative pattern 121 is 0.1 mm
  • the length of the second decorative pattern 122 a is 2.0 mm
  • the width b of the second pattern 122 is 0.1 mm
  • the height L of the second pattern 122 is 0.1 mm.
  • an encapsulating adhesive film 100 includes an adhesive film body 11 , one surface of the adhesive film body 11 is provided with a surface pattern 12 , and the surface pattern 12 and the adhesive film body 11 are integrally formed.
  • the surface pattern 12 includes a pattern unit composed of a first pattern 121 and a second pattern 122, the first pattern 121 extends along the first direction 101, the second pattern 122 extends along the second direction 102, and the first direction 101 and the second direction 102 are mutually Vertical, that is, the angle between the first direction 101 and the second direction 102 is a preset angle ⁇ , and the preset angle ⁇ is 90°.
  • the first pattern 121 and the second pattern 122 are in contact with each other.
  • the first pattern 121 is an arc-shaped strip-shaped protrusion along the longitudinal section of the first direction 101 (as shown in Figure 7), and the longitudinal section of the second pattern 122 along the second direction 102 is the same as the first pattern 121 The same curved bar raised.
  • the thickness H of the adhesive film body 11 is 2.0 mm
  • the length a of the first decorative pattern 121 is 3.0 mm
  • the width b of the first decorative pattern 121 is 0.5 mm
  • the height L of the first decorative pattern 121 is 0.4 mm
  • the length of the second decorative pattern 122 a is 3.0 mm
  • the width b of the second pattern 122 is 0.5 mm
  • the height L of the second pattern 122 is 0.4 mm.
  • an encapsulating adhesive film 100 includes an adhesive film body 11 , one surface of the adhesive film body 11 is provided with a surface pattern 12 , and the surface pattern 12 and the adhesive film body 11 are integrally formed.
  • the surface pattern 12 includes a pattern unit composed of a first pattern 121 and a second pattern 122, the first pattern 121 extends along the first direction 101, the second pattern 122 extends along the second direction 102, and the first direction 101 and the second direction 102 are mutually Vertical, that is, the angle between the first direction 101 and the second direction 102 is a preset angle ⁇ , and the preset angle ⁇ is 90°.
  • the first pattern 121 and the second pattern 122 are in contact with each other.
  • the first decorative pattern 121 is a strip-shaped protrusion (as shown in Figure 7 ) along the longitudinal section of the first direction 101, and the longitudinal section of the second decorative pattern 122 along the second direction 102 is the same as that of the first decorative pattern 121.
  • rectangular strips. Adjacent pattern units are connected to each other, so that the surface pattern 12 has a cross network structure.
  • the thickness H of the adhesive film body 11 is 2.0 mm
  • the length a of the first decorative pattern 121 is 4.0 mm
  • the width b of the first decorative pattern 121 is 2.5 mm
  • the height L of the first decorative pattern 121 is 1.5 mm
  • the length of the second decorative pattern 122 a is 4.0 mm
  • the width b of the second pattern 122 is 2.5 mm
  • the height L of the second pattern 122 is 1.5 mm.
  • an encapsulating adhesive film 100 includes an adhesive film body 11 , one surface of the adhesive film body 11 is provided with a surface pattern 12 , and the surface pattern 12 and the adhesive film body 11 are integrally formed.
  • the surface pattern 12 includes a pattern unit composed of a first pattern 121 and a second pattern 122, the first pattern 121 extends along the first direction 101, the second pattern 122 extends along the second direction 102, and the first direction 101 and the second direction 102 are mutually Vertical, that is, the angle between the first direction 101 and the second direction 102 is a preset angle ⁇ , and the preset angle ⁇ is 90°.
  • the first pattern 121 and the second pattern 122 are not in contact with each other.
  • the first pattern 121 is a trapezoidal strip-shaped protrusion along the longitudinal section of the first direction 101 (as shown in Figure 7), and the longitudinal section of the second pattern 122 along the second direction 102 is the same as that of the first pattern 121. trapezoidal strips.
  • the thickness H of the adhesive film body 11 is 1.5 mm
  • the length a of the first decorative pattern 121 is 3.0 mm
  • the width b of the first decorative pattern 121 is 2.0 mm
  • the height L of the first decorative pattern 121 is 1.0 mm
  • the length of the second decorative pattern 122 a is 3.0 mm
  • the width b of the second pattern 122 is 2.0 mm
  • the height L of the second pattern 122 is 1.0 mm.
  • an encapsulating adhesive film 100 includes an adhesive film body 11 , one surface of the adhesive film body 11 is provided with a surface pattern 12 , and the surface pattern 12 and the adhesive film body 11 are integrally formed.
  • the surface pattern 12 includes a pattern unit composed of a first pattern 121 and a second pattern 122, the first pattern 121 extends along the first direction 101, the second pattern 122 extends along the second direction 102, and between the first direction 101 and the second direction 102 The included angle between is the preset angle ⁇ , and the preset angle ⁇ is 135°.
  • One end of the first decorative pattern 121 and one end of the second decorative pattern 122 are in contact with each other.
  • the first decorative pattern 121 is an arc-shaped strip protrusion along the longitudinal section of the first direction 101 (as shown in FIG. 7 ), and the second decorative pattern 122 is along the The longitudinal section in the second direction 102 is the same arc-shaped strip-shaped protrusion as the first pattern 121 .
  • the thickness H of the adhesive film body 11 is 1.5 mm
  • the length a of the first decorative pattern 121 is 3.0 mm
  • the width b of the first decorative pattern 121 is 1.5 mm
  • the height L of the first decorative pattern 121 is 0.8 mm
  • the length of the second decorative pattern 122 a is 3.0 mm
  • the width b of the second pattern 122 is 1.5 mm
  • the height L of the second pattern 122 is 0.8 mm.
  • an encapsulating adhesive film 100 includes an adhesive film body 11 , one surface of the adhesive film body 11 is provided with a surface pattern 12 , and the surface pattern 12 and the adhesive film body 11 are integrally formed.
  • the surface pattern 12 includes a pattern unit composed of a first pattern 121 and a second pattern 122, the first pattern 121 extends along the first direction 101, the second pattern 122 extends along the second direction 102, and between the first direction 101 and the second direction 102 The included angle between is the preset angle ⁇ , and the preset angle ⁇ is 135°.
  • One end of the first pattern 121 is in contact with one end of the second pattern 122.
  • the first pattern 121 is an arc-shaped strip protrusion along the longitudinal section of the first direction 101 (as shown in FIG. 8 ), and the second pattern 122 is along the The longitudinal section in the second direction 102 is the same arc-shaped strip-shaped protrusion as the first pattern 121 , and the first pattern and the second pattern cooperate with each other to form a structure similar to warp and weft weaving of fibers.
  • the thickness H of the adhesive film body 11 is 1.5 mm
  • the length a of the first decorative pattern 121 is 3.0 mm
  • the width b of the first decorative pattern 121 is 1.5 mm
  • the maximum height L of the first decorative pattern 121 is 0.8 mm
  • the second decorative pattern 122 The length a is 3.0 mm
  • the width b of the second pattern 122 is 1.5 mm
  • the maximum height L of the second pattern 122 is 0.8 mm.

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Abstract

本发明公开了一种封装胶膜100，包括胶膜本体及设于胶膜本体的至少一个表面上的表面花纹，表面花纹包括基本沿第一方向延伸的第一花纹及基本沿第二方向延伸的第二花纹，第一方向与所述第二方向呈一预设角度α相交，预设角度α为大于0°且小于180°；表面花纹中包括至少一个第一花纹和至少一个第二花纹。本申请由于采用了在封装胶膜100表面设置表面花纹，有效的解决了现有技术中的技术问题，实现了增加封装胶膜100在光伏基板上的附着力，减少了在光伏组件铺设过程中出现的偏移问题。

Description

一种封装胶膜 技术领域
本发明涉及光伏封装技术，尤其是涉及一种封装胶膜。
背景技术
应国家对于“碳达峰”“碳中和”的要求，使用新能源替代火力发电的需求更加迫切，光伏发电作为一种绿色能源被认为是替代火电的理想新能源。光伏组件是光伏发电过程中核心组成部件。
光伏组件通常由光伏电极片及设于电池片两侧的基板组成，电池片与基板之间通过封装胶膜进行封装。封装胶膜对于光伏组件的封装和后续使用都具有重要作用，封装胶膜的封装质量直接影响光伏组件的寿命。
但本申请发明人在实现本申请实施例中技术方案的过程中，发现上述技术至少存在以下技术问题：
目前的封装胶膜上的电雕无规压花花纹在玻璃等光伏基板的附着力较差，在产线提速过程中容易出现滑移现象，同时封装胶膜与多主栅电池片上的栅线也会发生滚动滑移，从而导致在组件铺设过程中出现偏移问题，在层压后出现电池片偏移、并片、气泡、缺胶等外观不良的问题。
发明内容
本申请实施例通过提供一种封装胶膜，解决了现有技术中封装胶膜在组件铺设过程中出现的偏移问题，实现了改善封装胶膜在铺设过程中在玻璃等基板上的附着力，避免了封装胶膜与多主栅电池片上的栅线发生滚动滑移，保证光伏组件封装良品率的技术效果。
本申请实施例提供了一种封装胶膜，包括胶膜本体，封装胶膜还包括设于胶膜本体的至少一个表面上的表面花纹，表面花纹包括：
第一花纹，基本沿第一方向延伸；
第二花纹，基本沿第二方向延伸；
第一方向与第二方向呈一预设角度相交，预设角度为大于0°且小于180°；
表面花纹中包括至少一个第一花纹和至少一个第二花纹。
进一步地，胶膜本体的厚度为0.3-2.0mm，第一花纹的长度为1-5mm且宽度为0.05-3mm，第二花纹的长度为1-5mm且宽度为0.05-3mm。
进一步地，当预设角度大于0°且小于等于90°，则第一花纹的长宽比为(1.5-100)：1，第二花纹的长宽比为(1.5-100)：1；当预设角度大于90°且小于180°，则第一花纹的长宽比为(1.5-10)：1，第二花纹的长宽比为(1.5-10)：1。
进一步地，第一花纹与第二花纹之间相互接触。
进一步地，第一花纹的一端与第二花纹的一端相互接触、第一花纹的一端与第二花纹的中点相互接触或第一花纹的中点与第二花纹的中点相互接触。
进一步地，第一花纹与第二花纹之间呈
Figure PCTCN2022073956-appb-000001
形分布、呈
Figure PCTCN2022073956-appb-000002
形分布或呈
Figure PCTCN2022073956-appb-000003
形分布。
进一步地，相邻花纹单元之间相互连接，使表面花纹呈交叉网络结构。
进一步地，第一花纹与第二花纹之间相互分离。
进一步地，第一花纹和第二花纹为凸起。
进一步地，第一花纹或第二花纹中至少之一为弧形凸起，弧形凸起的最大高度为0.05-1.5mm。
进一步地，第一花纹或第二花纹中至少之一为台状凸起，台状凸起高度为0.05-1.5mm。
本申请实施例中提供的技术方案至少具有以下优点：
本申请由于采用了在封装胶膜表面设置表面花纹，有效的解决了现有技术中的技术问题，实现了增加封装胶膜在光伏基板上的附着力，避免了封装胶膜与多主栅电池片上的栅线发生滚动滑移，减少了在光伏组件铺设过程中出现的偏移问题。
附图说明
图1为本申请一种实现方式中封装胶膜的示意图；
图2为本申请另一种实现方式中封装胶膜的示意图；
图3为本申请另一种实现方式中封装胶膜的示意图；
图4为本申请另一种实现方式中封装胶膜的示意图；
图5为本申请另一种实现方式中封装胶膜的示意图；
图6为本申请一种实现方式中第一花纹的纵剖示意图；
图7为本申请另一种实现方式中第一花纹的纵剖示意图；
图8为本申请另一种实现方式中第一花纹的纵剖示意图；
图9为本申请另一种实现方式中封装胶膜的示意图；
图10为本申请另一种实现方式中封装胶膜的示意图；
图11为本申请另一种实现方式中封装胶膜的示意图。
图中：封装胶膜100，第一方向101，第二方向102，预设角度α，厚度H，高度L，长度a，宽度b；胶膜本体11，表面花纹12，第一花纹121，第二花纹122。
具体实施方式
为了使本领域的人员更好地理解本发明方案，下面将结合本申请实施方式中的附图，对本申请具体实施方式中的技术方案进行清楚、完整地描述。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。下面将结合实施例来详细说明本申请。
本申请实施例通过提供一种封装胶膜100，解决了现有技术中由于封装胶膜与光伏基板之间附着力较差导致的组件铺设后外观不良的问题，避免了封装胶膜与多主栅电池片上的栅线发生滚动滑移，在封装胶膜100表面设置表面花纹12实现在光伏组件铺设过程中封装胶膜100不发生偏移。
本申请中的实施例提供了一种封装胶膜100，其具体为光伏封装胶膜。如图1所示，其包括胶膜本体11及设于胶膜本体11的至少一个表面上的表面花纹12，表面花纹12包括至少两个相同或不相同的花纹单元。花纹单元具体包括第一花纹121和第二花纹122，第一花纹121基本沿第一方向101延伸；第二花纹122基本沿第二方向102延伸。第一方向101和第二方向102呈一预设角度α相交，预设角度α为大于0°且小于180°。在封装胶膜100的表面设置表面花纹12，能够增加在组件铺设过程中封装胶膜100与基板之间的附着力，解决现有技术中封装胶膜与基板之间附着力较差易产生偏移的问题。同时，增加表面花纹12还能增加封装胶膜100成型后与模具之间的剥离性能，保证剥离后封装胶膜100的完整性，解决现有技术中封装胶膜成型后剥离困难的问题。表面花纹12至少包括一个由第一花纹121和第二花纹122组成的花纹单元，第一花纹121和第二花纹122基本为条状，第一花纹121基本沿第一方向101延伸，第二花纹122基本沿第二方向102延伸，第一方向101和第二方向102之间的夹角为预设角度α，预设角度α只需要满足第一方向101和第二方向102不相互平行或重合即可，通常而言在保证技术效果的情况下，第一方向101与第二方向102设定为基本垂直。
作为一种实现方式，胶膜本体11的厚度H为0.3-2.0mm。封装胶膜100中设置了凸起结构，如果仍按照现有不设有凸起的胶膜一样设置胶膜本体11的厚度H，必然会导致胶膜的胶含量过大，不仅仅会增大生产成本，组件封装后还会因为胶黏层过后导致粘结能力下降，影响组件的寿命。为了保证封装胶膜100中的胶含量能够符合光伏组件封装要求，因此需要适应性的调整胶膜本体11的厚度H。对于凸起结构较多的封装胶膜100，需要适当降低胶膜本体11的厚度H。此外，也可以根据实际的生产需求，设置胶膜本体11的厚度H。胶膜本体11的厚度H在0.3-2.0mm范围是对于本申请较为合适的一个厚度H范围，既能够满足封装胶膜100胶含量的需求，也能够尽量降低生产成本，提高生产效率。
作为一种实现方式，第一花纹121的长度a为1-5mm且宽度b为0.05-3mm；第二花纹122的长度a为1-5mm且宽度b为0.05-3mm。此外，对第一花纹121和第二花纹122的尺寸进行一定限定，保证第一花纹121和第二花纹122具有一定的长度a和宽度b，保证能够增强封装胶膜100与基板之间接触面积，进而保证铺设时封装胶膜100与基板之间的附着力，保证不发生滑移等问题。第一花纹121和第二花纹122的尺寸也不宜过大，第一花纹121和第二花纹122过大，封装胶膜100的单位面积上第一花纹121和第二花纹122数量较少，在封装时，封装胶膜100与基板之间的接触面积较少，降低封装胶膜100在基板上的附着力，导致封装胶膜100容易滑移的问题仍旧存在无法解决。第一花纹121和第二花纹122的尺寸也不宜过小，第一花纹121和第二花纹122过小，封装胶膜100的单位面积上第一花纹121和第二花纹122数量较多，增加封装胶膜100从胶膜花辊上剥离的难度，会对封装胶膜100的完整性产生不良影响。
作为一种实现方式，当预设角度大于0°且小于等于90°，则第一花纹的长宽比为(1.5-100)：1，第二花纹的长宽比为(1.5-100)：1；当预设角度大于90°且小于180°，则第一花纹的长宽比为(1.5-10)：1，第二花纹的长宽比为(1.5-10)：1。当第一花纹和第二花纹之间的夹角大于90°时，整个由第一花纹和第二花纹组成的花纹单元所占的空间更大，如果此时第一花纹和第二花纹长宽比仍较大，会使得单位胶膜面积内花纹的面积占比较小，降低封装胶膜与基板之间的接触面积，会降低铺设时封装胶膜与基板之间的附着力，容易产生滑移等问题，因此在第一花纹和第二花纹之间夹角较大的 情况下，将第一花纹或第一花纹的长宽比限定在一个较小的范围内保证铺设时封装胶膜与基板之间的接触面积，保证两者之间的附着力。
作为一种实现方式，第一花纹121与第二花纹122之间相互接触。第一花纹121与第二花纹122在设置时，可以相互直接接触形成一个交点或交叉点。当第一花纹121和第二花纹122相互接触并形成一个交点或交叉点时，第一花纹121和第二花纹122相互连接，相互支撑，增大第一花纹121和第二花纹122的结构稳定性，使第一花纹121和第二花纹122不易发生位置偏移等容易降低良品率的情况。
作为一种实现方式，第一花纹121的一端与第二花纹122的一端相互接触、第一花纹121的一端与第二花纹122的中点相互接触或第一花纹121的中点与第二花纹122的中点相互接触。第一花纹121与第二花纹122相互接触的具体情况，可以为第一花纹121的一端与第二花纹122的一端相互接触，也可以是第一花纹121或第二花纹122其中之一的一端与另一花纹除端点外的任意一处相互接触，同时也可以是第一花纹121除端点外的任意一点与第二花纹122除端点外的任意一点相互接触。
作为一种实现方式，第一花纹121与第二花纹122之间相互接触呈“┬”形分布(如图2所示)、呈
Figure PCTCN2022073956-appb-000004
形分布(如图3所示)或呈
Figure PCTCN2022073956-appb-000005
形分布(如图4所示)。为了模具设计的简便，在本实现方式中设置第一花纹121和第二花纹122相互接触并形成一个交点或交叉点。具体地可以将第一花纹121与第二花纹122按如下设置，第一花纹121的一端与第二花纹122的一端相互接触，或是第一花纹121的一端与第二花纹122的中点相互接触，还可以是第一花纹121的中点与第二花纹122的中点相互接触。第一花纹121和第二花纹122相互设置可以使第一花纹121和第二花纹122相互支撑，保证在制作过程中第一花纹121和第二花纹122的结构完整性。
作为一种实现方式，如图5所示，相邻花纹单元之间相互连接，使表面花纹12呈交叉网络结构。对于第一花纹121和第二花纹122相互接触的情况，相邻的第一花纹121之间可以直接首尾相互接触，相邻的第二花纹122之间也可以直接首尾相互接触，最终形成呈交叉网络状结构的表面花纹12。
作为一种实现方式，第一花纹121与第二花纹122之间相互分离。第一花纹121和第二花纹122之间也可以相互不接触，即处于分离的状态。
作为一种实现方式，第一花纹121和第二花纹122为凸起。封装胶膜100需要先与玻璃等材质的基板贴合后再进行光伏组件的封装，现有技术中组件往大尺寸方向发展，封装胶膜和基板也往大尺寸方向发展。在封装胶膜与基板贴合的实际生产过程，往往是封装胶膜的四周与基板先行进行贴合，此时存在的一个问题是，胶膜四周与基板贴合后，封装胶膜与基板的一些位置存在大量的空气无法及时排出。现有技术中采用抽气的方式排出这些空气，但是由于组件往大尺寸发展的方向，如果仅仅采用抽气的方式排出空气，排气效率较低。并且随着抽气的进行，封装胶膜与基板不断贴合，最终在基板的中心等离抽气装置较远的位置仍会存在部分空气无法被全部排出，在封装胶膜和基板之间存在气泡，这些气泡的存在会影响光伏组件层压后的质量，降低光伏组件的质量和使用寿命。在胶膜本体11上设置一定的凸起结构，凸起结构之间具有一定的空隙，这些空隙能够为封装胶膜100与基板贴合过程中的气体提供排出通道，能够实现将空气完全排出，保证胶膜与基板之间的贴合效果，另一方面也能够降低胶膜在基板上的滑移。
作为一种实现方式，如图6所示，第一花纹121或第二花纹122中至少之一为台状凸起，台状凸起高度L为0.2-1.5mm。
作为一种实现方式，如图7所示，第一花纹121或第二花纹122中至少之一为长方体凸起，长方体凸起高度L为0.2-1.5mm。
作为一种实现方式，如图8所示，第一花纹121或第二花纹122中至少之一为弧形凸起，弧形凸起的最大高度L为0.2-1.5mm。
第一花纹121和第二花纹122的顶面可以是水平面，也可以是具有一定弧度的曲面。第一花纹121和第二花纹122的高度L不宜太高，否则由于第一花纹121和第二花纹122构成的花纹层存在缺胶部位造成封装胶膜100整体缺胶过多，影响后续组件封装时封装胶膜100的粘结能力。第一花纹121和第二花纹122的高度L最好不大于胶膜本体11的厚度H。
为了更好的理解上述技术方案，下面将结合说明书附图以及具体的实施方式对上述技术方案进行详细的说明。
实施例1
如图1所示，一种封装胶膜100，包括胶膜本体11，胶膜本体11表面的一个表面设有表面花纹12，表面花纹12和胶膜本体11为一体成型。表面花纹12包括由第一花纹121和第二花纹122组成花纹单元，第一花纹121沿 第一方向101延伸，第二花纹122沿第二方向102延伸，第一方向101与第二方向102相互垂直，即第一方向101和第二方向102之间的夹角为预设角度α，预设角度α为90°。第一花纹121与第二花纹122之间呈相互不接触的类似“┬”形分布，第一花纹121为沿第一方向101的纵剖面为弧形的条状凸起(如图7所示)，第二花纹122沿第二方向102的纵剖面为与第一花纹121相同的弧形条状凸起。胶膜本体11的厚度H为0.3mm，第一花纹121的长度a为1.0mm，第一花纹121的宽度b为0.05mm，第一花纹121的高度L为0.05mm，第二花纹122的长度a为1.0mm，第二花纹122的宽度b为0.05mm，第二花纹122的高度L为0.05mm。
实施例2
如图2所示，一种封装胶膜100，包括胶膜本体11，胶膜本体11表面的一个表面设有表面花纹12，表面花纹12和胶膜本体11为一体成型。表面花纹12包括由第一花纹121和第二花纹122组成花纹单元，第一花纹121沿第一方向101延伸，第二花纹122沿第二方向102延伸，第一方向101与第二方向102相互垂直，即第一方向101和第二方向102之间的夹角为预设角度α，预设角度α为90°。第一花纹121与第二花纹122之间呈相互接触的
Figure PCTCN2022073956-appb-000006
形分布，第一花纹121为沿第一方向101的纵剖面为弧形的条状凸起(如图7所示)，第二花纹122沿第二方向102的纵剖面为与第一花纹121相同的弧形条状凸起。胶膜本体11的厚度H为1.0mm，第一花纹121的长度a为5.0mm，第一花纹121的宽度b为3.0mm，第一花纹121的高度L为1.5mm，第二花纹122的长度a为5.0mm，第二花纹122的宽度b为3.0mm，第二花纹122的高度L为1.5mm。
实施例3
如图3所示，一种封装胶膜100，包括胶膜本体11，胶膜本体11表面的一个表面设有表面花纹12，表面花纹12和胶膜本体11为一体成型。表面花纹12包括由第一花纹121和第二花纹122组成花纹单元，第一花纹121沿第一方向101延伸，第二花纹122沿第二方向102延伸，第一方向101与第二方向102相互垂直，即第一方向101和第二方向102之间的夹角为预设角度α，预设角度α为90°。第一花纹121与第二花纹122之间呈相互接触的
Figure PCTCN2022073956-appb-000007
形分布，第一花纹121为沿第一方向101的纵剖面为弧形的条状凸起(如图7所示)，第二花纹122沿第二方向102的纵剖面为与第一花纹121相同 的弧形条状凸起。胶膜本体11的厚度H为1.5mm，第一花纹121的长度a为2.0mm，第一花纹121的宽度b为0.1mm，第一花纹121的高度L为0.1mm，第二花纹122的长度a为2.0mm，第二花纹122的宽度b为0.1mm，第二花纹122的高度L为0.1mm。
实施例4
如图4所示，一种封装胶膜100，包括胶膜本体11，胶膜本体11表面的一个表面设有表面花纹12，表面花纹12和胶膜本体11为一体成型。表面花纹12包括由第一花纹121和第二花纹122组成花纹单元，第一花纹121沿第一方向101延伸，第二花纹122沿第二方向102延伸，第一方向101与第二方向102相互垂直，即第一方向101和第二方向102之间的夹角为预设角度α，预设角度α为90°。第一花纹121与第二花纹122之间呈相互接触的
Figure PCTCN2022073956-appb-000008
形分布，第一花纹121为沿第一方向101的纵剖面为弧形的条状凸起(如图7所示)，第二花纹122沿第二方向102的纵剖面为与第一花纹121相同的弧形条状凸起。胶膜本体11的厚度H为2.0mm，第一花纹121的长度a为3.0mm，第一花纹121的宽度b为0.5mm，第一花纹121的高度L为0.4mm，第二花纹122的长度a为3.0mm，第二花纹122的宽度b为0.5mm，第二花纹122的高度L为0.4mm。
实施例5
如图5所示，一种封装胶膜100，包括胶膜本体11，胶膜本体11表面的一个表面设有表面花纹12，表面花纹12和胶膜本体11为一体成型。表面花纹12包括由第一花纹121和第二花纹122组成花纹单元，第一花纹121沿第一方向101延伸，第二花纹122沿第二方向102延伸，第一方向101与第二方向102相互垂直，即第一方向101和第二方向102之间的夹角为预设角度α，预设角度α为90°。第一花纹121与第二花纹122之间呈相互接触的
Figure PCTCN2022073956-appb-000009
形分布，第一花纹121为沿第一方向101的纵剖面为矩形的条状凸起(如图7所示)，第二花纹122沿第二方向102的纵剖面为与第一花纹121相同的矩形条状凸起。相邻花纹单元之间相互连接，使表面花纹12呈交叉网络结构。胶膜本体11的厚度H为2.0mm，第一花纹121的长度a为4.0mm，第一花纹121的宽度b为2.5mm，第一花纹121的高度L为1.5mm，第二花纹122的长度a为4.0mm，第二花纹122的宽度b为2.5mm，第二花纹122的高度L为1.5mm。
实施例6
如图9所示，一种封装胶膜100，包括胶膜本体11，胶膜本体11表面的一个表面设有表面花纹12，表面花纹12和胶膜本体11为一体成型。表面花纹12包括由第一花纹121和第二花纹122组成花纹单元，第一花纹121沿第一方向101延伸，第二花纹122沿第二方向102延伸，第一方向101与第二方向102相互垂直，即第一方向101和第二方向102之间的夹角为预设角度α，预设角度α为90°。第一花纹121与第二花纹122之间呈相互不接触的
Figure PCTCN2022073956-appb-000010
形分布，第一花纹121为沿第一方向101的纵剖面为梯形的条状凸起(如图7所示)，第二花纹122沿第二方向102的纵剖面为与第一花纹121相同的梯形条状凸起。胶膜本体11的厚度H为1.5mm，第一花纹121的长度a为3.0mm，第一花纹121的宽度b为2.0mm，第一花纹121的高度L为1.0mm，第二花纹122的长度a为3.0mm，第二花纹122的宽度b为2.0mm，第二花纹122的高度L为1.0mm。
实施例7
如图10所示，一种封装胶膜100，包括胶膜本体11，胶膜本体11表面的一个表面设有表面花纹12，表面花纹12和胶膜本体11为一体成型。表面花纹12包括由第一花纹121和第二花纹122组成花纹单元，第一花纹121沿第一方向101延伸，第二花纹122沿第二方向102延伸，第一方向101和第二方向102之间的夹角为预设角度α，预设角度α为135°。第一花纹121的一端与第二花纹122的一端相互接触，第一花纹121为沿第一方向101的纵剖面为弧形的条状凸起(如图7所示)，第二花纹122沿第二方向102的纵剖面为与第一花纹121相同的弧形条状凸起。胶膜本体11的厚度H为1.5mm，第一花纹121的长度a为3.0mm，第一花纹121的宽度b为1.5mm，第一花纹121的高度L为0.8mm，第二花纹122的长度a为3.0mm，第二花纹122的宽度b为1.5mm，第二花纹122的高度L为0.8mm。
实施例8
如图11所示，一种封装胶膜100，包括胶膜本体11，胶膜本体11表面的一个表面设有表面花纹12，表面花纹12和胶膜本体11为一体成型。表面花纹12包括由第一花纹121和第二花纹122组成花纹单元，第一花纹121沿第一方向101延伸，第二花纹122沿第二方向102延伸，第一方向101和第二方向102之间的夹角为预设角度α，预设角度α为135°。第一花纹121 的一端与第二花纹122的一端相互接触，第一花纹121为沿第一方向101的纵剖面为弧形的条状凸起(如图8所示)，第二花纹122沿第二方向102的纵剖面为与第一花纹121相同的弧形条状凸起，第一花纹和第二花纹相互配合形成类似纤维经纬编织的结构。胶膜本体11的厚度H为1.5mm，第一花纹121的长度a为3.0mm，第一花纹121的宽度b为1.5mm，第一花纹121的最大高度L为0.8mm，第二花纹122的长度a为3.0mm，第二花纹122的宽度b为1.5mm，第二花纹122的最大高度L为0.8mm。
实施例1-8制得的封装胶膜在制备光伏组件层压时，未发现封装胶膜滑移或电池片移位的问题。
应当理解的是，对于本领域普通技术人员来说，可以根据上述说明加以改进或变换，而所有这些改进和变换都应属于本发明所附权利要求的保护范围。

Claims (11)

  1. 一种封装胶膜，包括胶膜本体，其特征在于，所述封装胶膜还包括：
    设于所述胶膜本体的至少一个表面上的表面花纹，所述表面花纹包括：
    第一花纹，基本沿第一方向延伸；
    第二花纹，基本沿第二方向延伸；
    所述第一方向与所述第二方向呈一预设角度相交，所述预设角度为大于0°且小于180°；
    所述表面花纹中包括至少一个所述第一花纹和至少一个所述第二花纹。
  2. 根据权利要求1所述的一种封装胶膜，其特征在于：
    所述胶膜本体的厚度为0.3-2.0mm，所述第一花纹的长度为1-5mm且宽度为0.05-3mm，所述第二花纹的长度为1-5mm且宽度为0.05-3mm。
  3. 根据权利要求1所述的一种封装胶膜，其特征在于：
    所述预设角度大于0°且小于等于90°，则所述第一花纹的长宽比为(1.5-100)：1，所述第二花纹的长宽比为(1.5-100)：1；
    所述预设角度大于90°且小于180°，则所述第一花纹的长宽比为(1.5-10)：1，所述第二花纹的长宽比为(1.5-10)：1。
  4. 根据权利要求1所述的一种封装胶膜，其特征在于：
    所述第一花纹与所述第二花纹之间相互接触。
  5. 根据权利要求4所述的一种封装胶膜，其特征在于：
    所述第一花纹的一端与所述第二花纹的一端相互接触、所述第一花纹的一端与所述第二花纹的中点相互接触或所述第一花纹的中点与所述第二花纹的中点相互接触。
  6. 根据权利要求5所述的一种封装胶膜，其特征在于：
    所述第一花纹与所述第二花纹之间呈
    Figure PCTCN2022073956-appb-100001
    形分布、呈
    Figure PCTCN2022073956-appb-100002
    形分布或呈
    Figure PCTCN2022073956-appb-100003
    形分布。
  7. 根据权利要求4所述的一种封装胶膜，其特征在于：
    相邻所述花纹单元之间相互连接，使所述表面花纹呈交叉网络结构。
  8. 根据权利要求1所述的一种封装胶膜，其特征在于：
    所述第一花纹与所述第二花纹之间相互分离。
  9. 根据权利要求1所述的一种封装胶膜，其特征在于：
    所述第一花纹和所述第二花纹为凸起。
  10. 根据权利要求9所述的一种封装胶膜，其特征在于：
    所述第一花纹或所述第二花纹中至少之一为弧形凸起，所述弧形凸起的最大高度为0.05-1.5mm。
  11. 根据权利要求1所述的一种封装胶膜，其特征在于：
    所述第一花纹或所述第二花纹中至少之一为台状凸起，所述台状凸起高度为0.05-1.5mm。
PCT/CN2022/073956 2021-11-26 2022-01-26 一种封装胶膜 Ceased WO2023092857A1 (zh)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012025273A2 (de) * 2010-08-27 2012-03-01 Tesa Se Verfahren zur kontaktierung von solarmodulen
CN111416008A (zh) * 2020-05-09 2020-07-14 杭州福斯特应用材料股份有限公司 一种反射封装胶膜及包括其的太阳能电池组件
CN213534113U (zh) * 2020-08-05 2021-06-25 常州斯威克光伏新材料有限公司 一种t字型压花poe胶膜

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009096816A (ja) * 2007-10-12 2009-05-07 Lintec Corp 粘着シート及びその製造方法
CN202039015U (zh) * 2011-04-07 2011-11-16 江苏爱康太阳能科技股份有限公司 双面压花的太阳能电池封装胶膜
CN202282367U (zh) * 2011-10-30 2012-06-20 乐凯胶片股份有限公司 一种太阳能电池组件封装胶膜
CN202332895U (zh) * 2011-11-08 2012-07-11 广州保均塑料科技有限公司 一种eva太阳能电池组件封装膜
JP6233196B2 (ja) * 2013-08-30 2017-11-22 信越化学工業株式会社 太陽電池モジュールの製造方法
KR20210051870A (ko) * 2019-10-31 2021-05-10 (주)케이에프엠 배리어필름 적층체 및 이를 이용한 박막형 태양전지의 패키징 방법
CN210535679U (zh) * 2019-11-21 2020-05-15 苏州赛伍应用技术股份有限公司 一种防滑型封装胶膜
CN212113732U (zh) * 2020-05-28 2020-12-08 明冠新材料股份有限公司 一种光伏封装胶膜以及用于压花该胶膜的组件
CN216413097U (zh) * 2021-11-26 2022-04-29 杭州福斯特应用材料股份有限公司 一种封装胶膜

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012025273A2 (de) * 2010-08-27 2012-03-01 Tesa Se Verfahren zur kontaktierung von solarmodulen
CN111416008A (zh) * 2020-05-09 2020-07-14 杭州福斯特应用材料股份有限公司 一种反射封装胶膜及包括其的太阳能电池组件
CN213534113U (zh) * 2020-08-05 2021-06-25 常州斯威克光伏新材料有限公司 一种t字型压花poe胶膜

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4425576A4 *

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