Solar cell film covering equipment

Abstract

The utility model provides solar cell film coating equipment which is free of release paper removal action, simplifies manufacturing operation and reduces cost, and the solar cell film coating equipment comprises a cell linear conveying device which is used for conveying cells along a preset conveying direction on a horizontal plane, a film coating area is formed in the middle of the cell linear conveying device, and the film coating area is used for placing the cells to be coated; the film feeding device is located on the battery piece input side of the film covering area, arranged above the battery piece linear conveying device and used for conveying a functional film belt to the film covering area, an anti-scraping film layer is attached to a base film of the functional film belt, and the film pasting device is arranged above the battery piece linear conveying device and corresponds to the film covering area. The film pasting device is used for downwards pressing and covering a functional film belt which corresponds to the film covering area and is arranged in a spaced mode to the surface of the battery piece, so that a base film and an anti-scraping film layer in the functional film belt located in the film covering area are mutually stripped to form a no-load film belt, the anti-scraping film layer is pasted to the surface of the battery piece in a covering mode, and the film collecting device is used for recycling the no-load film belt formed after passing through the film pasting device.

Description

Technical Field

[0001] The present application relates to the technical field of solar cell production equipment, and in particular to solar cell coating equipment. Background Art

[0002] There are no grid lines on the front of the back-contact cell, and the silicon nitride anti-reflection film on the front is directly exposed, which is easy to cause surface damage during subsequent transfer and processing. At present, smooth isolation paper needs to be placed between the cells during the transfer and processing of back-contact solar cells. The amount of isolation paper is large, which increases the manufacturing cost; before the cell welding process, an action of removing the isolation paper is required. The actions required in the component manufacturing process are more complicated, which increases the difficulty of subsequent processing and increases the manufacturing cost. Summary of the invention

[0003] The present application provides a solar cell film coating device, comprising:

[0004] A battery cell linear conveying device is used to convey the battery cells along a preset conveying direction on a horizontal plane. A coating area is formed in the middle of the battery cell linear conveying device, and the coating area is used to park the battery cells to be coated;

[0005] The film conveying device is located at the cell input side of the film coating area and is arranged above the cell linear conveying device, and is used to convey the functional film tape to the film coating area. The base film of the functional film tape is attached with an anti-scratch film layer.

[0006] The film pasting device is arranged above the battery cell linear conveying device and corresponding to the film coating area. The film pasting device is used to press the functional film tape corresponding to the film coating area and arranged in a spaced manner downward to the surface of the battery cell, so that the base film and the anti-scratch film layer in the functional film tape in the film coating area are peeled off from each other to form an empty film tape, and the anti-scratch film layer is pasted on the surface of the battery cell.

[0007] The film collecting device is located at the output side of the battery cell in the film laminating area and is arranged above the battery cell linear conveying device, and is used to recover the empty film strip formed after passing through the film laminating device.

[0008] The solar cell film coating equipment provided by the present application can efficiently coat the surface of the cell. The film feeding device, the film sticking device, the film collecting device and the cell linear conveying device can cooperate to realize a fully mechanical and automated process from outputting the film tape from the functional film tape roll to forming a scratch-resistant film layer on the surface of the cell and then recovering the empty film tape, and saves operations such as cutting the film tape, and has a high coating efficiency. Coating the light-receiving surface of the back-contact cell can prevent the direct exposure and damage of the silicon nitride anti-reflection film on the front of the back-contact cell, thereby ensuring the quality of the cell. Coating the surface of the cell can avoid surface damage such as scratches caused by relative movement during the subsequent preparation of the cell, and avoid adverse consequences such as poor EL and reduced efficiency caused by surface damage. The removal of the isolation paper is eliminated, the cell manufacturing operation is simplified, and the manufacturing cost is reduced. In some optional embodiments of the present application, the battery cell linear conveying device includes a battery cell position sensor, which is arranged in the coating area. The battery cell position sensor is used to detect whether the battery cell to be coated has been delivered to the coating area, and the film pasting device is used to coat the battery cell to be coated that is currently in the coating area according to the position information of the battery cell position sensor that the battery cell to be coated has been delivered to the coating area.

[0009] In some optional embodiments of the present application,

[0010] The battery cell linear conveying device includes a first conveying part and a second conveying part that are independent of each other and spaced apart in the conveying direction, the first conveying part is used to convey the battery cells to be coated, and the second conveying part is used to convey the coated battery cells, the interval between the first conveying part and the second conveying part is smaller than the length of the battery cells in the conveying direction, and the coating area is at the conveying tail of the first conveying part, so that the coated battery cells can be conveyed to the second conveying part via the first conveying part.

[0011] In some optional embodiments of the present application, the battery cell position sensor is arranged at the rear end of the first conveying part in the conveying direction, and the battery cell position sensor is a photoelectric sensor.

[0012] In some optional embodiments of the present application, the film feeding device includes:

[0013] The first film roll driving mechanism is used for storing the functional film roll made of the functional film roll and driving the functional film roll to unwind.

[0014] The first roller assembly is located at the lower and rear side of the first film tape roll driving mechanism in the conveying direction. The first roller assembly includes a first fixed roller and a tensioning roller. The tensioning roller is located at the lower front side of the first fixed roller. The first fixed roller is used to redirect the functional film tape output from the functional film tape roll to the tensioning roller. The tensioning roller can switch its position back and forth between an upper limit position and a lower limit position, and the upper limit position is above the lower limit position.

[0015] In some optional embodiments of the present application, the film collecting device includes:

[0016] The second film tape driving mechanism is used to rewind the empty film tape formed after passing through the film laminating device to form an empty film tape roll, and is used to store the empty film tape roll;

[0017] The second fixed roller is located at the lower rear side of the second film tape driving mechanism in the conveying direction, and is used to redirect the empty film tape formed after passing through the film laminating device to the second film tape driving mechanism.

[0018] In some optional embodiments of the present application, in the vertical direction of the solar cell laminating equipment, the vertical distance from the second fixed roller to the linear conveying device of the solar cell is greater than the vertical distance from the lower limit of the tensioning roller to the linear conveying device of the solar cell, and is less than the vertical distance from the first fixed roller to the linear conveying device of the solar cell.

[0019] In some optional embodiments of the present application, the solar cell film coating device further includes:

[0020] The fixed plate is arranged on one side of the battery cell linear conveying device, and includes a first fixed plate and a second fixed plate arranged in sequence along the conveying direction. The first fixed plate is used to support the installation of the film feeding device and the film pasting device, and the second fixed plate is used to support the installation of the film collecting device.

[0021] In some optional embodiments of the present application, the film sticking device includes:

[0022] The telescopic transverse movement mechanism is arranged on one side of the battery cell linear conveying device and is arranged above the battery cell linear conveying device in a spaced manner.

[0023] The heating roller is connected to the telescopic transverse mechanism. The heating roller can move forward and backward and up and down relative to the battery cell linear conveying device through the telescopic transverse mechanism. The heating roller has left and right limit stops in the conveying direction to limit the forward and backward moving distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 This is a schematic diagram of the three-dimensional structure of a solar cell film coating device provided in an embodiment of the present application from one perspective;

[0026] Figure 2 is a front view structural schematic diagram of a solar cell film coating device provided in an embodiment of the present application;

[0027] Figure 3 It is a three-dimensional structural schematic diagram of a functional film tape roll;

[0028] Figure 4 It is a schematic diagram of the three-dimensional structure of another functional film roll;

[0029] Figure 5 It is a schematic diagram of the three-dimensional structure of another functional film tape roll.

[0030] Description of reference numerals:

[0031] 1-cell linear conveying device (conveyor belt); 101-first conveying unit; 102-second conveying unit

[0032] 2-fixed plate; 21-first fixed plate; 22-second fixed plate;

[0033] 3-Film collecting roller;

[0034] 4-film placing roller;

[0035] 5-film release drive motor;

[0036] 6-base film; 61-anti-scratch film layer; 611-film unit; 62-functional film tape;

[0037] 7- Transverse guide rail;

[0038] 8-Upper and lower cylinders:

[0039] 9- Heating roller;

[0040] 10-empty membrane tape;

[0041] 11-battery cell to be coated;

[0042] 12-film coated battery cell; 13-battery cell position sensor; 14-tensioning roller; 15-first fixed roller; 16-second fixed roller; 17-functional film roll; 18-empty film roll.

[0043] Laminating area-A; a-upper limit; b-lower limit; c-left limit; d-right limit;

[0044] Vertical-Y of solar cell coating equipment. DETAILED DESCRIPTION

[0045] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0046] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying 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 limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0047] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0048] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0049] like Figure 1 and Figure 2 As shown, the present application provides a solar cell film coating device, comprising:

[0050] The cell linear conveying device 1 is used to convey the cell along a preset conveying direction on a horizontal plane. A coating area A is formed in the middle of the cell linear conveying device 1. The coating area A is used to park the cell 11 to be coated.

[0051] The film conveying device is located at the cell input side of the film coating area A and is arranged above the cell linear conveying device 1, and is used to convey the functional film tape 62 to the film coating area A. The base film 6 of the functional film tape 62 is attached with an anti-scratch film layer 61.

[0052] The film pasting device is arranged above the battery cell linear conveying device 1 and corresponding to the film coating area A. The film pasting device is used to press the functional film tape 62 corresponding to the film coating area A and arranged in the air downward to the surface of the battery cell, so that the base film 6 and the anti-scratch film layer 61 in the functional film tape 62 in the film coating area A are peeled off from each other to form an empty film tape 10, and the anti-scratch film layer 61 is pasted on the surface of the battery cell.

[0053] The film collecting device is located at the output side of the battery cell in the film laminating area A and is arranged above the battery cell linear conveying device 1, and is used to recover the empty film tape 10 formed after passing through the film laminating device.

[0054] The solar cell film coating equipment provided by the present application can efficiently coat the surface of the cell. The film feeding device, the film sticking device, the film collecting device and the cell linear conveying device 1 can cooperate to realize a fully mechanical and automated process from rolling the output film tape 62 to forming the anti-scratch film layer 61 on the surface of the cell and then recycling the empty film tape 10, and saves operations such as cutting the film tape, and has a high coating efficiency. Coating the light-receiving surface of the back-contact cell can prevent the direct exposure and damage of the silicon nitride anti-reflection film on the front of the back-contact cell, thereby ensuring the quality of the cell. Coating the surface of the cell can avoid surface damage such as scratches caused by relative movement during the subsequent preparation of the cell, and avoid adverse consequences such as poor EL and reduced efficiency caused by surface damage. The removal of the isolation paper is eliminated, the cell manufacturing operation is simplified, and the manufacturing cost is reduced.

[0055] In some optional embodiments of the present application, the battery cell linear conveying device 1 includes a battery cell position sensor 13, and the battery cell position sensor 13 is arranged in the coating area A. The battery cell position sensor 13 is used to detect whether the battery cell 11 to be coated has been delivered to the coating area A, and the film pasting device is used to coat the battery cell 11 to be coated that is currently in the coating area A according to the position information of the battery cell 11 to be coated that has been delivered to the coating area A emitted by the battery cell position sensor 13.

[0056] In these embodiments, the cell position sensor 13 is a photoelectric sensor.

[0057] In some optional embodiments of the present application, the battery cell linear conveying device 1 includes a first conveying part 101 and a second conveying part 102 which are independent of each other and spaced apart in the conveying direction, the first conveying part 101 is used to convey the battery cell 11 to be coated, the second conveying part 102 is used to convey the coated battery cell 12, the interval between the first conveying part 101 and the second conveying part 102 is less than the length of the battery cell in the conveying direction, and the coating area A is at the conveying tail of the first conveying part 101, so that the coated battery cell 12 is conveyed to the second conveying part 102 via the first conveying part 101 and the battery cell. The first conveying part 101 and the second conveying part 102 are independent of each other and spaced apart, so that the two can independently convey the battery cell 11 to be coated and the coated battery cell 12, respectively, to improve the coating and transportation efficiency. For example, in the process of coating the battery cell 11 to be coated by the film laminating device, the second conveying part 102 can independently transport the coated battery cell 12 without affecting the coating operation on the first conveying part 101.

[0058] In some optional embodiments of the present application, the cell position sensor 13 is arranged at the rear end of the first conveying unit 101 in the conveying direction, and the cell position sensor 13 is a photoelectric sensor. In some examples, the first conveying unit 101 and the second conveying unit 102 are both double-track conveyor belts. When the first conveying unit 101 transfers the cell 11 to be coated to the coating area A, the cell position sensor 13 is shielded from light, so that the cell sensor detects the cell 11 to be coated, and the cell sensor sends the position information of the cell 11 to be coated to the coating area A to the control end, and the first conveying unit 101 stops continuing to transport the cell 11 to be coated to the coating area A according to the position information of the cell 11 to be coated.

[0059] In some optional embodiments of the present application, the film feeding device includes:

[0060] The first film tape roll driving mechanism is used for storing the functional film tape 62 roll made of the functional film tape 62 roll and driving the functional film tape 62 roll to unwind.

[0061] The first roller assembly is located at the lower and rear side of the first film tape roll driving mechanism in the conveying direction. The first roller assembly includes a first fixed roller 15 and a tensioning roller 14. The tensioning roller 14 is located at the lower front side of the first fixed roller 15. The first fixed roller 15 is used to redirect the functional film tape 62 output from the functional film tape 62 roll to the tensioning roller 14. The tensioning roller 14 can switch its position back and forth between the upper limit a and the lower limit b. The upper limit a is above the lower limit b.

[0062] In some optional embodiments of the present application, the film collecting device includes:

[0063] The second film tape driving mechanism is used to rewind the empty film tape 10 formed after the film laminating device to form 10 rolls of empty film tape, and is used to store the 10 rolls of empty film tape;

[0064] The second fixed roller 16 is located at the lower rear side of the second film tape driving mechanism in the conveying direction, and is used to redirect the empty film tape 10 formed after passing through the film laminating device to the second film tape driving mechanism.

[0065] In some examples, the first film tape roll driving mechanism includes a film unwinding driving motor 5 and a film unwinding roller shaft 4 connected to the driving end of the film unwinding driving motor 5. The second film tape driving mechanism includes a film winding driving motor and a film winding roller shaft 3 connected to the driving end of the film winding driving motor. The functional film tape 62 roll is arranged on the film unwinding roller shaft 4, and the functional film tape 62 output by the functional film tape 62 roll first bypasses the first fixed roller 15 and then bypasses the tensioning roller 14. After the functional film tape 62 roll passes through the film laminating device, the base film 6 and the anti-scratch film layer 61 are peeled off from each other, and the remaining base film 6 forms an empty film tape 10. The empty film tape 10 bypasses the second fixed roller 16 and then is rewound on the film winding roller shaft 3 through the second film tape driving mechanism to form an empty film tape 10 roll.

[0066] In some optional embodiments of the present application, in the vertical direction Y of the solar cell film coating device, the vertical distance from the second fixed roller 16 to the cell linear conveyor 1 is greater than the vertical distance from the lower limit b of the tension roller 14 to the cell linear conveyor 1, and is less than the vertical distance from the first fixed roller 15 to the cell linear conveyor 1. In these embodiments, the vertical distance setting relationship between the first fixed roller 15, the second fixed roller 16 and the tension roller 14 is conducive to the fact that when the film laminating device presses the functional film belt 62 corresponding to the film coating area A and arranged in the air downward to the cell surface, the distance from the functional film belt 62 corresponding to the film coating area A to the cell linear conveyor 1 is less than the distance from the blank film belt subsequently wound on the second fixed roller 16 to the cell linear conveyor 1. The base film 6 and the anti-scratch film layer 61 are more efficiently peeled off from each other, and the pulling effect on the anti-scratch film layer 61 during the peeling process is weakened, ensuring that the anti-scratch film layer 61 in the film coating area A can be completely peeled off, further improving the quality of the film coating on the cell surface.

[0067] In some optional embodiments of the present application, the solar cell film coating device further includes:

[0068] The fixed plate 2 is arranged on one side of the battery cell linear conveying device 1. The fixed plate 2 includes a first fixed plate 21 and a second fixed plate 22 arranged in sequence along the conveying direction. The first fixed plate 21 is used to support the installation of the film feeding device and the film pasting device, and the second fixed plate 22 is used to support the installation of the film collecting device.

[0069] In some optional embodiments of the present application, the film sticking device includes:

[0070] The telescopic transverse movement mechanism is arranged on one side of the battery cell linear conveying device 1 and is arranged above the battery cell linear conveying device 1 in a spaced manner.

[0071] The heating roller 9 is connected to the telescopic transverse mechanism. The heating roller 9 can move forward and backward and up and down relative to the battery cell linear conveying device 1 through the telescopic transverse mechanism. The heating roller 9 has a left limit c and a right limit d in the conveying direction to limit the forward and backward movement distance.

[0072] In these embodiments, the telescopic transverse mechanism includes a fixed seat mounted on the first fixed plate 21, a sliding groove is provided on the fixed seat, and a transverse guide rail 7 is fixedly installed on the fixed seat, and the transverse guide rail 7 is arranged above the sliding groove and the extension direction of the two is the same. The upper and lower cylinders 8 are slidably connected with the transverse guide rail 7 in the conveying direction, and a heating roller 9 is connected below the upper and lower cylinders 8. The heating roller 9 can move forward and backward via the transverse guide rail 7 and the sliding groove is limited during the movement process. The sliding groove is formed with a left limit c and a right limit d. The heating roller 9 can move vertically up and down along the battery cell linear conveying device 1 via the upper and lower cylinders 8, and moves downward to press the battery cell 11 to be coated, and moves upward to release the coated battery cell 12 and reserve input space for the battery cell 11 to be coated.

[0073] like Figures 3 to 5 As shown, the anti-scratch film layer 61 includes a plurality of spaced film units 611, each of which corresponds to a cell film, and the film units 611 may have various shapes. Figure 3 In the embodiment, a membrane unit 611 includes two rectangular membrane sheets spaced side by side in the width direction. Figure 4 As shown, a membrane unit 611 includes a large rectangular membrane. Figure 5 As shown, a membrane unit 611 includes two vertical rows of membrane sheet groups spaced apart in the width direction, and each row of membrane sheet groups includes a plurality of small rectangular membrane sheets spaced apart in the length direction of the membrane strip.

[0074] In the embodiment of the present application, the material of the anti-scratch film layer 61 is consistent with the material of the photovoltaic adhesive film, which can be well matched with the subsequent production of solar cell modules, that is, it can be well integrated with the adhesive film during the subsequent lamination process.

[0075] A coating process of the solar cell coating equipment provided in an embodiment of the present application is described in detail below.

[0076] S10: The first conveying unit 101 conveys the battery cell 11 to be coated to the coating area A. When the first conveying unit 101 transfers the battery cell 11 to be coated to the coating area A, the battery cell position sensor 13 is shielded from light, so that the battery cell sensor detects the battery cell 11 to be coated. The battery cell sensor sends the position information of the battery cell 11 to be coated that has been delivered to the coating area A to the control end. The first conveying unit 101 stops conveying the battery cell 11 to be coated to the coating area A according to the position information of the battery cell 11 to be coated that has been delivered to the coating area A.

[0077] S20: The film-winding roller 3 rotates and rewinds under the drive of the film-winding driving motor, and the empty film tape 10 formed on the covered area by the last coating is recovered. The tensioning roller 14 moves up to the upper limit a, and the film-releasing driving motor 5 drives the film-releasing roller 4 to rotate and unwind. When the functional film tape 62 can cover the covered area, the tensioning roller 14 returns to the lower limit b and stops.

[0078] S30: The upper and lower cylinders 8 drive the heating roller 9 in the right limit position d in the film laminating device to press the functional film tape 62 to the battery cell 11 to be coated. The upper and lower cylinders 8 move laterally along the transverse guide rail 7, driving the heating roller 9 to move from the right limit position d to the left limit position c, so that the base film 6 and the anti-scratch film layer 61 in the functional film tape 62 in the corresponding coverage area are peeled off from each other to form an empty film tape 10, and the anti-scratch film layer 61 is attached to the surface of the battery cell.

[0079] S40: The heating roller 9 stops moving laterally after reaching the left limit c, and the upper and lower cylinders 8 drive the heating roller 9 to rise. The upper and lower cylinders 8 move laterally along the transverse guide rail 7, driving the heating roller 9 to move from the left limit c to the right limit d.

[0080] S50: The first conveying unit 101 conveys the coated battery cell 12 in the coating area A to the second conveying unit 102 , and the coating process of one battery cell is now completed.

[0081] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A solar cell film coating device, characterized in that: include: A battery cell linear conveying device is used to convey the battery cells along a preset conveying direction on a horizontal plane, wherein a coating area is formed in the middle of the battery cell linear conveying device, and the coating area is used to park the battery cells to be coated; The film conveying device is located at the cell input side of the film coating area and is arranged above the cell linear conveying device, and is used to convey a functional film tape to the film coating area, wherein a scratch-resistant film layer is attached to the base film of the functional film tape. A film pasting device is arranged above the battery cell linear conveying device and corresponding to the film coating area, and is used to press the functional film tape corresponding to the film coating area and arranged in a spaced manner downward onto the surface of the battery cell, so that the base film and the anti-scratch film layer in the functional film tape in the film coating area are peeled off from each other to form an empty film tape, and the anti-scratch film layer is pasted on the surface of the battery cell, The film collecting device is located at the battery cell output side of the film coating area and is arranged above the battery cell linear conveying device, and is used to recover the empty film strip formed after passing through the film laminating device.

2. The solar cell film coating equipment according to claim 1, characterized in that: The battery cell linear conveying device includes a battery cell position sensor, which is arranged in the coating area. The battery cell position sensor is used to detect whether the battery cell to be coated has been delivered to the coating area. The film pasting device is used to coat the battery cell to be coated that is currently in the coating area according to the position information of the battery cell position sensor that the battery cell to be coated has been delivered to the coating area.

3. The solar cell film coating equipment according to claim 2, characterized in that: The battery cell linear conveying device includes a first conveying part and a second conveying part which are independent of each other and spaced apart in the conveying direction, the first conveying part is used to convey the battery cells to be coated, the second conveying part is used to convey the coated battery cells, the interval between the first conveying part and the second conveying part is smaller than the length of the battery cells in the conveying direction, and the coating area is located at the conveying tail of the first conveying part, so that the coated battery cells can be conveyed to the second conveying part via the first conveying part.

4. The solar cell film coating equipment according to claim 3, characterized in that: The cell position sensor is disposed at the rear end of the first conveying portion in the conveying direction, and the cell position sensor is a photoelectric sensor.

5. The solar cell film coating equipment according to claim 1, characterized in that: The film feeding device comprises: a first film roll driving mechanism, for storing a functional film roll made from the functional film roll and driving the functional film roll to unwind, The first roller assembly is located at the lower and rear side of the first film tape roll driving mechanism in the conveying direction, and the first roller assembly includes a first fixed roller and a tensioning roller, and the tensioning roller is located at the lower front side of the first fixed roller, and the first fixed roller is used to redirect the functional film tape output from the functional film tape roll to the tensioning roller, and the tensioning roller can switch its position back and forth between an upper limit position and a lower limit position, and the upper limit position is above the lower limit position.

6. The solar cell film coating equipment according to claim 5, characterized in that: The film collecting device comprises: a second film tape driving mechanism, used for rewinding the empty film tape formed after passing through the film laminating device to form an empty film tape roll, and for storing the empty film tape roll; The second fixed roller is located at the lower rear side of the second film tape driving mechanism in the conveying direction, and is used to redirect the empty film tape formed after passing through the film laminating device to the second film tape driving mechanism.

7. The solar cell film coating equipment according to claim 6, characterized in that: In the vertical direction of the solar cell coating equipment, the vertical distance from the second fixed roller to the cell linear conveying device is greater than the vertical distance from the lower limit of the tensioning roller to the cell linear conveying device, and is less than the vertical distance from the first fixed roller to the cell linear conveying device.

8. The solar cell film coating equipment according to claim 6, characterized in that: The solar cell film coating equipment also includes: A fixed plate is arranged on one side of the battery cell linear conveying device, and the fixed plate includes a first fixed plate and a second fixed plate arranged in sequence along the conveying direction. The first fixed plate is used to support and install the film feeding device and the film pasting device, and the second fixed plate is used to support and install the film collecting device.

9. The solar cell film coating equipment according to claim 1, characterized in that: The film sticking device comprises: The telescopic transverse movement mechanism is arranged on one side of the battery cell linear conveying device and is arranged above the battery cell linear conveying device in a spaced manner. The heating roller is connected to the telescopic transverse mechanism. The heating roller can move forward and backward and up and down relative to the battery cell linear conveying device through the telescopic transverse mechanism. The heating roller has a left limit and a right limit in the conveying direction to limit the forward and backward movement distance.

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