Grid line transfer film and photovoltaic cell

Abstract

The utility model provides a grid line transfer film and a photovoltaic cell, the grid line transfer film comprises a first side surface and a second side surface which are opposite to each other, and the first side surface is provided with a grid line forming groove; each grid line forming groove comprises a first groove body with a quadrangular cross section and a second groove body with a quadrangular or triangular cross section. The second groove body is close to the second side face relative to the first groove body and communicated with the first groove body, and the first groove body and the second groove body are different in cross section shape. The grid line transfer printing film can be used for forming grid lines on a battery piece. The cross section of the grid line formed by the grid line forming groove can comprise a first part formed by the first groove body and electrically contacted with the surface of the battery piece and a second part formed by the second groove body and located on the side, away from the surface of the battery piece, of the first part, and the shape of the second part can reflect / refract light to improve the light incidence rate. And the overall photoelectric conversion efficiency of the photovoltaic cell is improved. And the grid line integrally formed through the grid line transfer printing film does not have a contact surface which affects current transmission.

Description

Technical Field

[0001] The present application belongs to the technical field of photovoltaic cells, and in particular relates to a grid line transfer film and a photovoltaic cell. Background Art

[0002] Photovoltaic cells can convert solar energy into electrical energy using the photoelectric effect and are a new type of renewable, pollution-free energy technology.

[0003] Photovoltaic cells are provided with grid lines for collecting and transmitting current. However, the grid lines easily block ambient light, affecting the light input rate of the photovoltaic cells, and further affecting the overall photoelectric conversion efficiency of the cells. Utility Model Content

[0004] The embodiments of the present application provide a grid line transfer film and a photovoltaic cell to solve or alleviate one or more technical problems in the prior art.

[0005] As one aspect of an embodiment of the present application, an embodiment of the present application provides a gate line transfer film, the gate line transfer film comprising a first side surface and a second side surface opposite to each other, the first side surface being provided with a gate line forming groove;

[0006] Wherein, the depth direction of the gate line forming groove is the direction from the first side surface to the second side surface;

[0007] The gate line forming groove comprises:

[0008] A first slot body, wherein the cross section of the first slot body is a quadrilateral;

[0009] A second tank body, wherein the cross section of the second tank body is a quadrilateral or a triangle;

[0010] The second slot body is connected to the first slot body, the second slot body is closer to the second side surface than the first slot body, and the shape of the cross section of the first slot body is different from the shape of the cross section of the second slot body.

[0011] Optionally, the cross section of the first slot body is rectangular;

[0012] The cross section of the second tank body is triangular.

[0013] Optionally, the cross section of the first slot body is rectangular;

[0014] The cross section of the second tank body is trapezoidal.

[0015] Optionally, the cross section of the first slot body is a first trapezoid;

[0016] The cross section of the second tank body is a second trapezoid;

[0017] The hypotenuse of the first trapezoid is not parallel to the hypotenuse of the second trapezoid.

[0018] Optionally, the cross section of the first slot body includes a first edge away from the first side surface, the second slot body includes a second edge away from the second side surface, and the first edge and the second edge overlap and have the same length.

[0019] Optionally, the depth of the first groove body is 10 μm to 15 μm, and the width of the first groove body is 10 μm to 50 μm.

[0020] Optionally, the cross section of the second slot body includes a second side away from the second side surface, and a first hypotenuse and a second hypotenuse opposite to each other, and the included angle between the second side and the first hypotenuse / the second hypotenuse is 60° to 90°.

[0021] Optionally, the material of the gate line transfer film includes resin.

[0022] Optionally, the grid line transfer film further includes a separation layer, and the separation layer is attached to the inner wall of the grid line forming groove.

[0023] As another aspect of the embodiment of the present application, the embodiment of the present application further provides a photovoltaic cell, the photovoltaic cell comprising:

[0024] Battery cells;

[0025] A grid line is arranged on the surface of the battery cell;

[0026] Wherein, the gate lines are obtained by integrally forming the gate line transfer films described in any one of the above items.

[0027] The gate line transfer film of the embodiment of the present application can be used to form corresponding gate lines on the battery cell. The gate line transfer film is provided with a gate line forming groove, and the cross section of the gate line formed by the gate line forming groove can include a first part formed by a first groove body, and a second part formed by a second groove body, the first part is in electrical contact with the surface of the battery cell, and the second part is located on the side of the first part away from the surface of the battery cell. The shape of the second part enables it to reflect / refract light to increase the light incident rate of the photovoltaic cell, reduce the shielding of the grid line to the battery cell, and improve the overall photoelectric conversion efficiency of the photovoltaic cell. The first part can be used to cooperate with the second part to increase the cross-sectional area of ​​the grid line and reduce the transmission resistance. And the gate line transfer film of the embodiment of the present application can form the grid line at one time. Since the first part and the second part of the grid line are integrally formed, there will be no problem of poor contact caused by the misalignment of the first part and the second part, and there will be no contact surface that affects the current transmission between the first part and the second part that are integrally formed.

[0028] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present application will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0030] Figure 1 A schematic diagram of the structure of the gate line transfer film of an embodiment of the present application;

[0031] Figure 2 A schematic diagram of a process of forming a grid line on a battery cell using a grid line transfer film according to an embodiment of the present application is shown;

[0032] Figure 3 A schematic diagram of a structure of a gate line formed by a gate line transfer film provided in an embodiment of the present application;

[0033] Figure 4 Another schematic diagram of the structure of the gate line transfer film of the embodiment of the present application;

[0034] Figure 5 It is another structural schematic diagram of the gate line transfer film of the embodiment of the present application;

[0035] Figure 6 It is another structural schematic diagram of the gate line transfer film of the embodiment of the present application;

[0036] Figure 7 It is another structural schematic diagram of the gate line transfer film of the embodiment of the present application;

[0037] Figure 8 This is another structural schematic diagram of the gate line transfer film according to an embodiment of the present application.

[0038] Description of reference numerals:

[0039] Gate line transfer film 10 ; first side surface 101 ; second side surface 102 ; gate line forming groove 103 ; separation layer 105 ; angle 125 ; first groove body 1031 ; second groove body 1032 ; battery cell 20 ; gate line 201 . DETAILED DESCRIPTION

[0040] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings. In the accompanying drawings, for clarity, the sizes of layers, regions, elements and their relative sizes may be exaggerated. The same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0041] It should be understood that when an element or layer is referred to as "on ...", "adjacent to ...", "connected to" or "coupled to" other elements or layers, it can be directly on, adjacent to, connected to or coupled to other elements or layers, or there can be intervening elements or layers. On the contrary, when an element is referred to as "directly on ...", "directly adjacent to ...", "directly connected to" or "directly coupled to" other elements or layers, there is no intervening element or layer. It should be understood that although the terms first, second, third, etc. can be used to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teachings of the present disclosure, the first element, component, region, layer or part discussed below can be represented as the second element, component, region, layer or part. And when the second element, component, region, layer or part is discussed, it does not mean that the present disclosure necessarily has the first element, component, region, layer or part.

[0042] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0044] The embodiment of the present application provides a grid line transfer film and a photovoltaic cell to increase the light incident rate of the photovoltaic cell and improve the overall photoelectric conversion efficiency of the photovoltaic cell. See below for details.

[0045] Hereinafter, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. It should be noted that these exemplary embodiments can be implemented in many different forms and should not be construed as being limited to the embodiments described herein.

[0046] See also Figures 1 to 3 The embodiment of the present application provides a gate line transfer film 10, which includes a first side surface 101 and a second side surface 102 opposite to each other. The first side surface 101 is provided with a gate line forming groove 103, and the depth direction of the gate line forming groove 103 is the direction from the first side surface 101 to the second side surface 102.

[0047] Wherein, the gate line forming groove 103 includes:

[0048] A first slot body 1031, wherein the cross section of the first slot body 1031 is a quadrilateral;

[0049] A second slot body 1032, the cross section of the second slot body 1032 is a quadrilateral or a triangle;

[0050] The second groove body 1032 is connected to the first groove body 1031 . The second groove body 1032 is closer to the second side surface 102 than the first groove body 1031 . The cross-sectional shape of the first groove body 1031 is different from the cross-sectional shape of the second groove body 1032 .

[0051] The gate line transfer film 10 of the embodiment of the present application can be used to form a corresponding gate line 201 on a cell. Specifically, the cross section of the gate line formed by the gate line forming groove 103 may include a first part formed by the first groove body 1031, and a second part formed by the second groove body 1032, the first part is in electrical contact with the surface of the cell, and the second part is located on the side of the first part away from the surface of the cell. The shape of the second part allows it to reflect / refract light to increase the light input rate of the photovoltaic cell, reduce the shielding of the grid line on the cell, and improve the overall photoelectric conversion efficiency of the photovoltaic cell. The first part can be used to cooperate with the second part to increase the cross-sectional area of ​​the grid line and reduce the transmission resistance.

[0052] It should be noted that if the first part and the second part of the gate line are formed separately, the first part of the formed gate line may be randomly bent during the transfer process, which may cause misalignment when the second part is formed on the first part, thereby causing poor contact and resulting in a decrease in gate line performance. In addition, the contact surface between the first part and the second part will also affect the transmission of current.

[0053] The gate line transfer film of the embodiment of the present application can form the gate line in one go. Since the first part and the second part of the gate line are integrally formed, there will be no problem of poor contact caused by misalignment of the first part and the second part, and there will be no contact surface between the integrally formed first part and the second part that affects current transmission.

[0054] Specifically, see Figure 2 In this embodiment, the slurry can be filled into the gate line forming groove 103 of the gate line transfer film 10 by a scraper, and then one side of the gate line transfer film 10 provided with the gate line forming groove 103 is covered on the surface of the battery cell. The slurry in the gate line forming groove 103 contacts the surface of the battery cell 20 due to the effect of gravity. After the slurry is dried and solidified, a gate line 201 of a corresponding shape is formed on the battery cell 20, and then the gate line transfer film 10 can be removed.

[0055] The triangular cross section of the grid line 201 can more easily reflect / refract ambient light, thereby increasing the overall light input rate of the photovoltaic cell. However, if the grid line with a triangular cross section is made based on the same volume of slurry, the cross-sectional area will be relatively small, thereby increasing the resistance of the grid line 201 and affecting the transmission of current.

[0056] Therefore, based on the situation that electrical and optical requirements are met as much as possible, in an optional embodiment, please refer to Figure 1 and Figure 3 The cross section of the first groove body 1031 is a rectangle; the cross section of the second groove body 1032 is a triangle, so that the cross section of the gate line forming groove 103 is a pentagon as a whole. Preferably, the cross section of the second groove body 1032 is an isosceles triangle.

[0057] The rectangular + triangular gate line forming groove 103 in this embodiment can form a gate line 201 of a corresponding shape. The portion of the gate line 201 with a triangular cross-section can reflect / refract ambient light to improve the overall light incident rate of the photovoltaic cell. The portion of the gate line 201 with a rectangular cross-section can relatively increase the cross-sectional area of ​​the gate line to reduce the resistance of the gate line and reduce the impact on current transmission.

[0058] Furthermore, in this embodiment, the cross section of the first slot body 1031 includes a first side away from the first side surface 101 , and the second slot body 1032 includes a second side away from the second side surface 102 , and the first side and the second side overlap and have the same length.

[0059] It can be understood that if the first side and the second side overlap and have different lengths, a reflection surface parallel to the surface of the cell will appear, which can easily cause the ambient light to be directly reflected back along the original light path, thereby reducing the light input rate.

[0060] Therefore, the first side and the second side overlap and have the same length, which can avoid the gate lines formed by the gate line transfer film 10 having a reflection surface parallel to the surface of the cell, and avoid the problem of directly reflecting ambient light along the original light path to reduce the light incidence.

[0061] The specifications of the gate lines formed on the battery cell are adapted to the specifications of the gate line forming grooves 103 on the gate line transfer film 10. Therefore, the specifications of the gate lines formed on the battery cell by the gate line transfer film 10 can be adjusted by adjusting the depth or width of the first groove body 1031, so that the gate line transfer film 10 can adjust the specifications of the gate line forming grooves 103 according to the requirements of different battery cells, thereby improving versatility and reusability.

[0062] Specifically, in an optional embodiment, based on the fact that the first groove body 1031 is rectangular, the depth of the first groove body 1031 is 10 μm to 15 μm, and the width of the first groove body 1031 is 10 μm to 50 μm.

[0063] In an optional embodiment, the cross-section of the second groove body 1032 includes a second side away from the second side surface 102, and a first hypotenuse and a second hypotenuse opposite to each other (i.e., two waists of the triangular cross-section), and an angle 125 between the second side and the first hypotenuse / second hypotenuse is 60° to 90°.

[0064] The above-mentioned angles can make the three corners of the triangle non-obtuse, and can avoid the presence of concave on the inner wall of the grid line forming groove 103. In this way, after the grid lines are formed by the grid line transfer film 10, the grid line transfer film 10 can be directly removed by tearing the film. The absence of concave on the inner wall of the grid line forming groove 103 can also alleviate the situation where the concave and the grid lines generate excessive stress, resulting in the grid lines breaking when the film is torn off.

[0065] The gate line forming groove 103 may also be in other shapes. Figure 4 The cross section of the first groove body 1031 is rectangular, and the cross section of the second groove body 1032 is trapezoidal, so that the cross section of the gate line forming groove 103 is a hexagon as a whole. Preferably, the cross section of the second groove body 1032 is an isosceles trapezoid.

[0066] The cross-section of the second slot body 1032 is a trapezoid, which can form a grid line with a flat top. The grid line can be used as a fine grid, and the main grid can continue to be laid on the fine grid. The flat part of the fine grid is in contact with the main grid, so that the fine grid and the main grid can form a surface contact. The two have good bonding force and are not easy to fall off the grid. Surface contact can make the contact surface have a relatively low resistance compared to point contact, thereby improving the current transmission efficiency.

[0067] In another alternative embodiment, see Figure 5 The cross section of the first groove body 1031 is a first trapezoid, and the cross section of the second groove body 1032 is a second trapezoid, so that the cross section of the gate line forming groove 103 is a hexagon as a whole, and the hypotenuse of the first trapezoid is not parallel to the hypotenuse of the second trapezoid.

[0068] The parts formed by the first slot body 1031 and the second slot body 1032 are both trapezoidal, and the waist of the trapezoid can refract / reflect ambient light, thereby increasing the light input rate. The overall cross-sectional area of ​​the grid line is relatively appropriate, avoiding the situation where the cross-sectional area of ​​the grid line is too small and the resistance is too large. In addition, the cross-sectional area of ​​the second slot body 1032 is a trapezoid, which can form a grid line with a flat top. The grid line can be used as a fine grid, and the flat top of the fine grid can enhance the bonding force with the main grid, and the contact surface between the two is relatively large, and the resistance is low.

[0069] In other embodiments, the gate line forming groove 103 may also be in other shapes. Figure 6 , such as the first slot body 1031 is an irregular quadrilateral, and the second slot body 1032 is a triangle; or, please refer to Figure 7 The first slot body 1031 is an irregular trapezoid, the second slot body 1032 is an irregular trapezoid, and the upper half of the cross section of the second slot body 1032 is smaller than the lower half of the cross section of the second slot body 1032.

[0070] After the gate lines are formed on the surface of the cell using the gate line transfer film 10, it is necessary to remove the gate line transfer film 10. In addition to removing the gate line transfer film 10 by tearing off the film, other methods can also be used. In an optional embodiment, the material of the gate line transfer film 10 includes resin.

[0071] Since the gate line transfer film 10 in this embodiment contains resin, an alkaline solution can be used to remove the gate line transfer film 10 on the cell.

[0072] The resin may include one or more of polymethacrylate, styrene, and maleic acid.

[0073] Exemplarily, an alkaline solution at 50° C. to 70° C. may be sprayed on the gate line transfer film 10 , or the cell with the gate line transfer film 10 may be immersed in the alkaline solution for 3 to 7 minutes and then washed to remove the residual gate line transfer film 10 .

[0074] Specifically, the alkaline solution may be a sodium hydroxide solution with a concentration of 3% to 5%.

[0075] In other embodiments, the material of the gate line transfer film 10 may further include one or more of a plasticizer, a tackifier, a thermal inhibitor, and a flame retardant.

[0076] For example, the plasticizer may be trisethylene glycol diacetate. Adding the plasticizer to the grid line transfer film 10 can improve the flexibility of the grid line transfer film 10 and prevent the grid line transfer film 10 from being damaged during use.

[0077] The adhesion promoter may include nitrogen-containing heterocyclic compounds, such as one or more of benzotriazole, benzimidazole, and indazole. Adding corresponding components can improve the adhesion of the gate line transfer film 10, so that the gate line transfer film 10 can better cover the battery cell and is not easy to fall off.

[0078] The thermal inhibitor may include one or more of hydroquinone and p-methoxyphenol. Adding the thermal inhibitor to the gate line transfer film 10 can improve the heat dissipation effect of the gate line transfer film 10 and prevent the gate line transfer film 10 from being deformed or affecting the performance of the battery cell due to excessive temperature during use.

[0079] The flame retardant may include aromatic halides. When the grid line transfer film 10 catches fire accidentally, adding the flame retardant to the grid line transfer film 10 can significantly reduce the speed and degree of burning of the grid line transfer film 10, thereby reducing the fire hazard.

[0080] After the gate lines are formed on the surface of the cell using the gate line transfer film 10 , the gate line transfer film 10 may be removed by other methods.

[0081] In an alternative embodiment, see Figure 8 The grid line transfer film 10 further includes a separation layer 105 , and the separation layer 105 is attached to the inner wall of the grid line forming groove 103 .

[0082] The material of the separation layer 105 may include an easily evaporable material. When it is necessary to remove the gate line transfer film 10 on the surface of the battery cell, the separation layer 105 can be evaporated. On the one hand, the thrust generated by the evaporation of the separation layer 105 can increase the bonding strength between the gate line and the battery cell. On the other hand, the stress generated when the separation layer 105 is evaporated can separate the gate line from the gate line forming groove 103, and then the gate line transfer film 10 can be torn off to remove the gate line transfer film 10, thereby reducing the risk of gate line breakage caused by tearing off the film.

[0083] The embodiment of the present application further provides a photovoltaic cell, which includes a cell and a grid line arranged on the surface of the cell, and the grid line is obtained by integrally forming the grid line transfer film 10 described in any of the above embodiments.

[0084] The cross section of the gate line obtained by integrally forming the gate line transfer film 10 corresponds to the cross section of the gate line forming groove 103. The shape of the upper end of the gate line can reflect / refract light to increase the light input rate of the photovoltaic cell and reduce the shielding of the grid line on the cell; the shape of the lower end of the gate line can increase the cross-sectional area of ​​the grid line and reduce the transmission resistance to improve the overall photoelectric conversion efficiency of the photovoltaic cell. In addition, the integrally formed gate line can also avoid the situation where the gate line is formed twice or multiple times, resulting in multiple contact surfaces, and then resulting in poor contact, resulting in a decrease in gate line performance or affecting current transmission.

[0085] It should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are only for the convenience of describing the present application and simplifying the description, 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 cannot be understood as a limitation on the present application. The orientation words "inside" and "outside" refer to the inside and outside relative to the outline of each component itself. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Therefore, the exemplary term "above..." can include both "above..." and "below..." orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here are interpreted accordingly.

[0086] It should also be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this application refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of this application.

[0087] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0088] It should also be noted that the above are only preferred embodiments of the present application, and the patent protection scope of the present application is not limited thereto. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A gate line transfer film, characterized in that: The gate line transfer film comprises a first side surface and a second side surface opposite to each other, and the first side surface is provided with a gate line forming groove; Wherein, the depth direction of the gate line forming groove is the direction from the first side surface to the second side surface; The gate line forming groove comprises: A first slot body, wherein the cross section of the first slot body is a quadrilateral; A second tank body, wherein the cross section of the second tank body is a quadrilateral or a triangle; The second slot body is connected to the first slot body, the second slot body is closer to the second side surface than the first slot body, and the shape of the cross section of the first slot body is different from the shape of the cross section of the second slot body.

2. The gate line transfer film according to claim 1, characterized in that: The cross section of the first trough body is a rectangle; The cross section of the second tank body is triangular.

3. The gate line transfer film according to claim 1, characterized in that: The cross section of the first trough body is a rectangle; The cross section of the second tank body is trapezoidal.

4. The gate line transfer film according to claim 1, characterized in that: The cross section of the first slot body is a first trapezoid; The cross section of the second tank body is a second trapezoid; The hypotenuse of the first trapezoid is not parallel to the hypotenuse of the second trapezoid.

5. The gate line transfer film according to claim 2, characterized in that: The cross section of the first slot body includes a first side away from the first side surface, and the second slot body includes a second side away from the second side surface. The first side and the second side overlap and have the same length.

6. The gate line transfer film according to claim 2 or 3, characterized in that: The depth of the first groove is 10 μm to 15 μm, and the width of the first groove is 10 μm to 50 μm.

7. The gate line transfer film according to claim 2, characterized in that: The cross section of the second groove body includes a second side away from the second side surface, and a first hypotenuse and a second hypotenuse opposite to each other, and the included angle between the second side and the first hypotenuse / second hypotenuse is 60° to 90°.

8. The gate line transfer film according to any one of claims 1 to 5, characterized in that: The material of the gate line transfer film includes resin.

9. The gate line transfer film according to any one of claims 1 to 5, characterized in that: The grid line transfer film further comprises a separation layer, and the separation layer is attached to the inner wall of the grid line forming groove.

10. A photovoltaic cell, characterized in that: The photovoltaic cell comprises: Battery cells; A grid line is arranged on the surface of the battery cell; Wherein, the gate lines are obtained by integrally forming the gate line transfer film according to any one of claims 1 to 9.

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