0BB photovoltaic cell and photovoltaic solder strip lamination metallization tension sample preparation

Abstract

The invention discloses a 0BB photovoltaic cell and photovoltaic solder strip lamination metallization tension sample preparation device. The sample preparation device comprises a front light-transmitting plate, a first packaging adhesive film, a first high-temperature-resistant adhesive film, a cell string layer, a second high-temperature-resistant adhesive film, a second packaging adhesive film and a back packaging plate which are sequentially stacked, the photovoltaic welding strip and the OBB battery in the battery string layer are laminated and then connected into a whole; only fine grid lines are printed on the surfaces of the OBB batteries, and the photovoltaic welding strips vertically penetrate through the front faces and the back faces of the two adjacent OBB batteries in a penetrating mode to make contact with the fine grid lines. The melting point of the high-temperature-resistant adhesive film is higher than the lamination temperature, the photovoltaic welding strip is positioned on the thin grid line of the OBB battery from the upper surface and the lower surface of the OBB battery, and the lamination temperature is transmitted to the photovoltaic welding strip, so that the surface layer of the photovoltaic welding strip is melted and the thin grid line is metalized. The high-temperature-resistant adhesive film in the sample preparation can position the 0BB battery and the photovoltaic welding strip, and can skillfully separate the laminated battery string layer and the packaging adhesive film, so that the tensile force test can be performed on the metalized OBB battery and the photovoltaic welding strip.

Description

Technical Field

[0001] The invention relates to the field of photovoltaic cell manufacturing, and in particular to a 0BB photovoltaic cell and a photovoltaic welding ribbon laminated metallization tensile sample preparation. Background Art

[0002] Photovoltaic cells are electrically connected through photovoltaic ribbons. The tin layer on the surface of the photovoltaic ribbon melts and is metallized with the photovoltaic cell grid to form an ohmic contact. The contact effect between the photovoltaic ribbon and the cell can evaluate the conductive performance of the photovoltaic ribbon and the cell, and the metallized welding tension between the photovoltaic ribbon and the cell is an important indicator of the welding effect between the photovoltaic ribbon and the cell. Conventional cells first perform high-temperature welding of the photovoltaic ribbon and the cell main grid during the welding process to form a metallized connection between the photovoltaic ribbon and the battery main grid, and then a welding tension test can be performed. However, 0BB (no main grid) cells only have thin grid lines but no main grid lines. There is no photovoltaic ribbon pre-welding process (or a pre-welding process that only plays a positioning role), but metallized contact is formed during the high-temperature lamination process. After high-temperature lamination, the components have been packaged as one, and it is no longer possible to evaluate the metallized contact between the photovoltaic ribbon and the cell.

[0003] The Chinese utility model patent with publication number CN214066735U proposes a solar cell welding tensile test device, which includes a fixture, a force measuring assembly and a force measuring unit. The fixture has a separation channel, the fixture can clamp the battery cell, and the photovoltaic welding strip on the battery cell is located in the separation channel. The force measuring assembly includes a support plate and a pressure block pressed against the support plate, the support plate is provided with a positioning groove, and the photovoltaic welding strip extends into the positioning groove on the support plate. The pressure block is configured to be able to clamp and pull the photovoltaic welding strip together with the support plate so that the photovoltaic welding strip is peeled off the battery cell. The force measuring unit is used to measure the tension of the force measuring assembly. The solar cell welding tensile test device disclosed in the patent is a conventional battery (with main grid) welding tensile test device, and the test sample preparation and method are common tensile sample preparation and methods in the industry.

[0004] Therefore, the industry lacks sample preparation specifically for 0BB photovoltaic cells and photovoltaic ribbon lamination metallization tensile testing. Summary of the invention

[0005] The purpose of the present invention is to provide a 0BB photovoltaic cell and photovoltaic welding ribbon lamination metallization tensile sample preparation, aiming to provide a sample preparation and a sample preparation method for the welding tensile test after the photovoltaic welding ribbon and the battery cell are laminarized, and to provide process guidance for the production of 0BB photovoltaic modules.

[0006] To achieve the above-mentioned purpose, the present invention provides the following scheme: a 0BB photovoltaic cell and photovoltaic welding ribbon laminated metallization tensile sample preparation, comprising a front light-transmitting plate, a first packaging film, a first high-temperature resistant adhesive film, a battery string layer, a second high-temperature resistant adhesive film, a second packaging film, and a back packaging plate stacked in sequence; the battery string layer comprises a plurality of OBB cells connected in series and parallel and a photovoltaic welding ribbon for connecting two adjacent OBB cells, and the photovoltaic welding ribbon and the OBB cell are connected as a whole after lamination; only fine grid lines are printed on the surface of the OBB cell, and the photovoltaic welding ribbon is interspersed up and down on the front and back of two adjacent OBB cells, and contacts with the fine grid lines on the OBB cell; the melting points of the first high-temperature resistant adhesive film and the second high-temperature resistant adhesive film are higher than the lamination temperature, and the first high-temperature resistant adhesive film and the second high-temperature resistant adhesive film position the photovoltaic welding ribbon on the fine grid lines of the OBB cell from the upper and lower surfaces of the OBB cell, and transfer the lamination temperature to the photovoltaic welding ribbon, so that the surface layer of the photovoltaic welding ribbon melts and is metallized with the fine grid lines.

[0007] The above structure aims to propose a 0BB photovoltaic cell and photovoltaic ribbon laminated metallization tensile sample preparation, which adopts a high temperature resistant adhesive film to complete the positioning of the 0BB cell and the photovoltaic ribbon, and can separate the cell string and the packaging film in the laminate, and cleverly separate the laminated cell string layer and the packaging film, so as to facilitate the tensile test of the metallized 0BB cell and photovoltaic ribbon, and complete the evaluation of the metallization.

[0008] Preferably, the first high temperature resistant adhesive film and the second high temperature resistant adhesive film are made of the same material, and the melting point of the high temperature resistant adhesive film is 220° C.-250° C.

[0009] Preferably, the melting point of the photovoltaic welding ribbon is ≤175°C.

[0010] Preferably, the photovoltaic welding ribbon is a low-temperature tin layer welding ribbon.

[0011] Preferably, the components of the high temperature resistant adhesive film include epoxy resin, polyacrylic resin, isocyanate curing agent and imidazole curing agent.

[0012] Preferably, the high temperature resistant adhesive film further comprises a silane coupling agent.

[0013] Preferably, the high temperature resistant adhesive film further comprises nano metal oxide.

[0014] Preferably, the high temperature resistant adhesive film further comprises a hardener which reacts with the epoxy resin to improve the mechanical strength and impact resistance of the adhesive film.

[0015] Preferably, the high temperature resistant adhesive film further comprises an ultraviolet light stabilizer.

[0016] Preferably, adhesive glue is coated on the first high temperature resistant adhesive film and the second high temperature resistant adhesive film on one side facing the OBB battery.

[0017] The present invention discloses the following technical effects:

[0018] The present invention provides a 0BB photovoltaic cell and photovoltaic welding strip lamination metallization tensile sample preparation, and the invention mainly provides a solution to the welding tensile test after the photovoltaic welding strip and the battery cell are metallized in the lamination process. In the production process of 0BB photovoltaic components, pre-welding positioning is first performed, and then lamination and metallization are performed. After lamination, the components are packaged as a whole, and the metallization performance of the photovoltaic welding strip and the battery cell can no longer be tested and evaluated. The present invention designs a sample that can be disassembled after lamination, separates the adhesive film from the photovoltaic welding strip and the battery cell, and isolates the photovoltaic welding strip and the 0BB battery separately, so as to further perform tensile testing or other tests (such as lamination metallization metallographic observation, etc.). BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the main fine grid line of a conventional photovoltaic cell;

[0021] Figure 2 Schematic diagram of metallization tensile test of photovoltaic cells and photovoltaic welding ribbons;

[0022] Figure 3 It is a schematic diagram of the cross section and battery connection method of a conventional photovoltaic module;

[0023] Figure 4 It is a conventional photovoltaic module battery connection layout diagram and corresponding circuit schematic diagram;

[0024] Figure 5 This is a tensile test drawing of the metallization of the OBB photovoltaic cell and photovoltaic welding ribbon according to an embodiment of the present invention.

[0025] In the figure: 1. Solar cell; 11. Main grid line; 12. Fine grid line; 2. Traditional welding ribbon; 3. Front adhesive film; 4. Front glass; 5. Back adhesive film; 6. Back glass; 101. OBB battery; 102. Photovoltaic welding ribbon; 103. First high temperature resistant adhesive film; 104. First packaging film; 105. Front light-transmitting plate; 106. Second high temperature resistant adhesive film; 107. Second packaging film; 108. Back packaging plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Reference Figure 1 and Figure 2 As shown, conventional photovoltaic modules are mainly crystalline silicon modules, and main grid lines 11 and fine grid lines 12 are printed on the front and back of the battery cell 1. The main grid lines 11 are generally perpendicular to the battery side. Traditional welding strips 2 are welded on the main grid lines 11 to connect the battery cells 1, and then the battery cells 1 are assembled into modules. Figure 1 The tensile test sampling is to remove the battery cell 1 with the soldering ribbon in the welding process, and fold the soldering ribbon 180° through a tensile machine for tensile testing to characterize the metallization tensile effect. Figure 2 shown.

[0028] Reference Figure 3 and Figure 4 As shown, conventional photovoltaic modules are packaged with front glass 4, front adhesive film 3, battery cell 1, back adhesive film 5, back glass 6 or back plate structure, and the battery cell 1 in the middle layer is welded to the upper and lower surfaces of adjacent battery cells 1 through traditional welding ribbons 2 to connect the positive and negative electrodes of the battery cell 1. Figure 3 The mainstream cell 1 is aligned with the main grid line 11 of the cell 1 through the traditional welding ribbon 2, and then the tin layer on the surface of the traditional welding ribbon 2 is melted by the high temperature of the welding machine, and welded with the silver grid line of the cell main grid. During welding, a single string of cells is welded, so that the cell 1 is interconnected, and assembled into a whole through packaging materials to become a photovoltaic module power generation module, such as Figure 4 As shown, Figure 4 (a) is a conventional half-cell battery connection layout diagram. Figure 4 (b) is the corresponding circuit diagram.

[0029] 0BB photovoltaic cells are a type of solar photovoltaic cells without busbars. Traditional crystalline silicon cells have busbars and fine grid lines printed on the front and back. The current generated by the cell is first collected by the fine grid lines. The busbars are generally perpendicular to the fine grid lines, and then the current flowing through the fine grid lines is collected. At the same time, the busbars can be pressed up and down with the photovoltaic welding strips. The tin layer on the surface of the photovoltaic welding strips and the busbars are melted into one by heat, and the busbars are transmitted to the photovoltaic welding strips. 0BB photovoltaic cells refer to cells with only fine grid lines without busbars. The photovoltaic welding strips are directly welded to the fine grid lines vertically, and the current transmitted by the fine grid lines is directly collected by the welding strips. 0BB photovoltaic cells eliminate busbars, busbar silver paste materials and printing equipment, and are an emerging direction for the development of photovoltaic technology.

[0030] 0BB photovoltaic cell metallization refers to the process in which the tin layer on the surface of the photovoltaic ribbon melts under high temperature, adheres to the silver paste of the grid line, and combines into one after cooling. 0BB The key technology of photovoltaic cell metallization is the positioning of the cell and photovoltaic ribbon, which mainly includes glue application, pre-welding or lamination bonding. The photovoltaic ribbon is a low-temperature tin layer ribbon. The photovoltaic ribbon and the cell are technically interconnected through the temperature of the lamination process, and the packaging film is melted and cross-linked to complete the production of photovoltaic module laminates. 0BB The characterization of the photovoltaic ribbon and cell metallization of photovoltaic cells can no longer be verified in the pre-lamination process. The more function is to fix the position of the photovoltaic ribbon and the cell, and the metallization occurs in the lamination process. At this time, the photovoltaic module cell, photovoltaic ribbon, film, front and back glass, etc. have been completely laminated as a whole, and it is impossible to test the metallization tension of the photovoltaic ribbon and cell 1 inside the module.

[0031] The present invention aims to solve the sample preparation and test method problems of welding tensile test, and designs a 0BB photovoltaic cell and photovoltaic welding ribbon lamination metallization tensile sample preparation, which mainly provides a solution to the welding tensile test after the photovoltaic welding ribbon and the battery cell are metallized in the lamination process. The sample preparation designed by the present invention can still split the sample after lamination, separate the adhesive film from the photovoltaic welding ribbon and the battery cell, and isolate the photovoltaic welding ribbon and the 0BB battery separately, so as to further perform tensile tests or other tests (such as lamination metallization metallographic observation, etc.).

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Reference Figure 5 As shown, the present invention provides a 0BB photovoltaic cell and photovoltaic ribbon laminated metallization tensile sample, including a front light-transmitting plate 105, a first packaging film 104, a first high-temperature resistant adhesive film 103, a battery string layer, a second high-temperature resistant adhesive film 106, a second packaging film 107, and a back packaging plate 108 stacked in sequence from bottom to top, and the battery string layer includes a plurality of OBB cells 101 connected in series and parallel and a photovoltaic ribbon 102 for connecting two adjacent OBB cells 101. The front light-transmitting plate 105, the first packaging film 104, the first high-temperature resistant adhesive film 103, the battery string layer, the second high-temperature resistant adhesive film 106, the second packaging film 107, and the back packaging plate 108 are laminated to obtain a sample, wherein the photovoltaic ribbon 102 and the OBB cell 101 are connected as a whole after lamination.

[0034] Specifically, the OBB cell 101 is located in the middle of the layer structure, the surface of the OBB cell 101 is printed with fine grid lines 12, there is no main grid line 11, two adjacent OBB cells 101 are connected by photovoltaic welding strips 102, and the photovoltaic welding strips 102 are interspersed up and down on the front and back of the two adjacent OBB cells 101, and contact the fine grid lines 12 of the OBB cell 101. The photovoltaic welding strips 102 and the fine grid lines 12 are positioned by a high temperature resistant adhesive film. Specifically, the high temperature resistant adhesive film is resistant to lamination high temperature, and adhesive is coated on one side (the adhesive force should not be large). The adhesive surface adheres the photovoltaic welding strip 102 between the high temperature resistant adhesive film and the OBB cell to complete the positioning of the photovoltaic welding strip 102. After the tin layer of the photovoltaic welding strip 102 is metallized, it will not adhere to the high temperature resistant adhesive film. The encapsulation film and the glass or back plate on the front and back sides can be made of conventional materials.

[0035] When preparing the sample, first place the front light-transmitting plate 105 on the operating table, lay the first packaging film 104 on the front light-transmitting plate 105, lay the first high-temperature resistant adhesive film 103 on the first packaging film 104, apply adhesive glue on the surface of the first high-temperature resistant adhesive film 103 in contact with the battery string layer, then place the photovoltaic welding ribbon 102 and the OBB battery 101, and then lay the second high-temperature resistant adhesive film 106 coated with adhesive glue on the photovoltaic welding ribbon 102 and the OBB battery 101, and then lay the second packaging film 107 and the back packaging plate 108 in turn. Place the completed stacked parts on the laminated parts for high-temperature lamination to obtain the sample.

[0036] Photovoltaic ribbon 102 is a key material used in photovoltaic modules, and it is closely related to the welding process of photovoltaic cells 1. The characteristic of photovoltaic ribbon 102 is that it can be welded at a relatively low temperature, which is particularly important for some temperature-sensitive photovoltaic cell technologies, such as heterojunction (HJT) cells, TOPCon cells, and OBB cells 101. Photovoltaic ribbon 102 can help improve the efficiency of cells and extend the service life of modules. Due to its low-temperature welding characteristics, it helps to reduce the cell fragmentation rate, improve the mechanical stability and long-term reliability of the cell, and thus improve the overall performance of photovoltaic modules.

[0037] In this embodiment, the melting point of the photovoltaic welding ribbon 102 is below 175° C. For example, the low-temperature solder photovoltaic welding ribbon 102 disclosed in publication number CN117697225A or the ultra-photovoltaic welding ribbon 102 disclosed in publication number CN116100187B can be selected.

[0038] In this embodiment, the melting point of the high temperature resistant adhesive film is greater than the lamination temperature, that is, greater than the melting point of the photovoltaic welding ribbon 102. Preferably, the high temperature resistant adhesive film can be a film with a melting point between 220°C and 250°C.

[0039] In some embodiments, the high temperature resistant adhesive film includes epoxy resin, polyacrylic resin, isocyanate curing agent and imidazole curing agent.

[0040] According to a further optimization scheme, the above-mentioned high temperature resistant adhesive film also includes a silane coupling agent, which can improve the bonding performance and heat resistance of the material, especially when processing non-metallic materials such as plastics.

[0041] According to a further optimization scheme, the above-mentioned high temperature resistant adhesive film also includes nano metal oxides. The nano metal oxides may be nano alumina, nano silicon dioxide, etc. These materials have high heat resistance and can improve the overall performance of the adhesive film.

[0042] According to a further optimization scheme, the above-mentioned high temperature resistant adhesive film also includes a hardener that reacts with the epoxy resin to improve the mechanical strength and impact resistance of the adhesive film.

[0043] As a further optimization scheme, the above-mentioned high temperature resistant adhesive film also includes a UV stabilizer, which can improve the material's resistance to ultraviolet rays, slow down aging and performance degradation caused by ultraviolet radiation, improve its chemical stability and resistance to potential induced degradation, thereby extending the service life of the OBB battery 101.

[0044] It should be understood that in practical applications, the front light-transmitting plate 105 is a key material for encapsulating the OBB cell 101 in the photovoltaic module, which not only provides physical protection but also ensures sufficient light transmittance to facilitate the absorption of solar energy. Therefore, the front light-transmitting plate 105 can be other transparent plates such as conventional photovoltaic tempered glass, TCO glass, powder coating prepared from highly transparent acrylic resin, flexible light-transmitting plate, etc., which are not specifically limited in this embodiment.

[0045] It should also be understood that in actual applications, the back packaging plate 108 can be a light-transmitting material of the same material as the front light-transmitting plate 105, or it can be a conventional back plate, such as a PET plate, PVF plate, or PCT plate, and can be adapted according to the selection of the photovoltaic module to be tested.

[0046] In some embodiments, the encapsulation film may be a material that is indispensable for providing electrical insulation, moisture-proofing, weather resistance, and mechanical protection, and may be a POE film, an EVA film, an EPE film, etc., without specific limitation herein.

[0047] The 0BB photovoltaic cell and photovoltaic welding strip lamination metallization tensile sample preparation disclosed in the present invention adopts a high temperature resistant adhesive film, which can withstand the lamination temperature without deformation and has good thermal conductivity, and can transmit the lamination temperature to the photovoltaic welding strip, so that the tin layer on the surface of the photovoltaic welding strip melts, and adheres to the fine grid lines on the surface of the battery to complete the metallization. The sample lamination is basically consistent with the 0BB industrial lamination, which can reflect the metallization degree of the 0BB cell and the photovoltaic welding strip. After the sample lamination is completed, because the metallized tin layer is not bonded to the film, and the film has a small bonding force with the battery cell, the film can be easily separated from the battery cell, and the separated 0BB cell and photovoltaic welding strip that have been metallized as one can be taken, and the tensile test of the 0BB cell and photovoltaic welding strip after lamination and metallization can be carried out.

[0048] Compared with the prior art, the present invention at least discloses the following beneficial effects:

[0049] 1. The present invention proposes a 0BB photovoltaic cell and photovoltaic welding ribbon lamination metallization tensile sample preparation, which adopts a high temperature resistant adhesive film for sample preparation;

[0050] 2. The present invention proposes a 0BB photovoltaic cell and photovoltaic welding ribbon laminated metallization tensile sample preparation, which innovatively designs the sample preparation structure and completes the separation of the 0BB cell and the photovoltaic welding ribbon after metallization.

[0051] 3. The metallization sampling of the battery and photovoltaic welding strip after lamination proposed by the present invention is not limited to 0BB batteries and photovoltaic welding strips. This sampling method can be used for research sampling after lamination.

[0052] The details not described in detail in the present invention are all conventional technical means well known to those skilled in the art.

[0053] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0054] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A 0BB ​​photovoltaic cell and photovoltaic ribbon lamination metallization tensile sample preparation, characterized in that: The invention comprises a front light-transmitting plate (105), a first packaging film (104), a first high-temperature resistant adhesive film (103), a battery string layer, a second high-temperature resistant adhesive film (106), a second packaging film (107), and a back packaging plate (108) which are stacked in sequence; the battery string layer comprises a plurality of OBB batteries (101) connected in series and in parallel and a photovoltaic welding strip (102) for connecting two adjacent OBB batteries (101); the photovoltaic welding strip (102) and the OBB batteries (101) are connected as a whole after lamination; the surface of the OBB batteries (101) is only printed with fine grid lines (12); the photovoltaic welding strip (102) is inserted up and down between the adjacent OBB batteries (101); The front and back sides of the two OBB cells (101) are in contact with the fine grid lines (12) on the OBB cells (101); the melting points of the first high temperature resistant adhesive film (103) and the second high temperature resistant adhesive film (106) are higher than the lamination temperature; the first high temperature resistant adhesive film (103) and the second high temperature resistant adhesive film (106) position the photovoltaic welding strip (102) on the fine grid lines (12) of the OBB cells (101) from the upper and lower surfaces of the OBB cells (101), and transfer the lamination temperature to the photovoltaic welding strip (102), so that the surface layer of the photovoltaic welding strip (102) melts and metallizes with the fine grid lines (12).

2. The 0BB photovoltaic cell and photovoltaic ribbon lamination metallization tensile sample preparation according to claim 1, characterized in that: The first high temperature resistant adhesive film (103) and the second high temperature resistant adhesive film (106) are made of the same material and are high temperature resistant adhesive films with a melting point of 220°C-250°C.

3. The 0BB photovoltaic cell and photovoltaic welding ribbon lamination metallization tensile sample preparation according to claim 2, characterized in that: The melting point of the photovoltaic welding ribbon (102) is ≤175°C.

4. The 0BB photovoltaic cell and photovoltaic ribbon lamination metallization tensile sample preparation according to claim 3, characterized in that: The photovoltaic welding ribbon (102) is a low-temperature tin layer welding ribbon.

5. The 0BB photovoltaic cell and photovoltaic welding ribbon lamination metallization tensile sample preparation according to claim 2, characterized in that: The components of the high temperature resistant adhesive film include epoxy resin, polyacrylic resin, isocyanate curing agent and imidazole curing agent.

6. The 0BB photovoltaic cell and photovoltaic welding ribbon lamination metallization tensile sample preparation according to claim 5, characterized in that: The high temperature resistant adhesive film also includes a silane coupling agent.

7. The 0BB photovoltaic cell and photovoltaic ribbon lamination metallization tensile sample preparation according to claim 6, characterized in that: The high temperature resistant adhesive film also includes nano metal oxide.

8. The 0BB photovoltaic cell and photovoltaic ribbon lamination metallization tensile sample preparation according to claim 7, characterized in that: The high temperature resistant adhesive film also includes a hardener which reacts with the epoxy resin to improve the mechanical strength and impact resistance of the adhesive film.

9. The 0BB photovoltaic cell and photovoltaic ribbon lamination metallization tensile sample preparation according to claim 8, characterized in that: The high temperature resistant adhesive film also includes an ultraviolet light stabilizer.

10. The 0BB photovoltaic cell and photovoltaic ribbon lamination metallization tensile sample preparation according to claim 1, characterized in that: Adhesive glue is coated on the first high temperature resistant adhesive film (103) and the second high temperature resistant adhesive film (106) on one side facing the OBB battery (101).

Images