Method for producing and packaging TOPCon battery piece with high sealing performance

Abstract

The invention discloses a method for producing and packaging a high-sealing TOPCon battery piece, and relates to the field of TOPCon battery piece production. According to the production and packaging method for the TOPCon battery piece with the high sealing performance, a supporting frame, a supporting unit, a limiting unit and a contact unit are included. According to the production and packaging method for the high-sealing TOPCon battery piece, when an air cylinder pushes a connecting base to move, a contact base moves upwards to make contact with the TOPCon battery piece, at the moment, under movement of a moving rod, a connecting block and a first threaded rod move, at the moment, a sliding base moves relative to the connecting base, and under movement of the sliding base, the connecting block and the first threaded rod move upwards to make contact with the TOPCon battery piece; the rotating rod is driven to rotate, the connecting plate and the limiting plates are pulled to move through the rotating rod, so that the two limiting plates move oppositely, the limiting plates make contact with the TOPCon battery piece and extrude the TOPCon battery piece, the TOPCon battery piece is limited, and detection and packaging of the TOPCon battery piece are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of TOPCon cell production, and in particular to a method for producing a high-sealing TOPCon cell and a packaging method thereof. Background Art

[0002] The production process of TOPCon cells includes multiple processes such as silicon wafer pretreatment, texturing and diffusion, tunneling oxide layer and polysilicon layer preparation, metallization and passivation, packaging and testing to complete the production of TOPCon cells.

[0003] When processing TOPCon cells, the TOPCon cells are supported, and after the TOPCon cells are supported, the photoelectric performance of the cells is tested to ensure that the battery performance meets the requirements. After meeting the requirements, the TOPCon cells are supported. In the prior art, the TOPCon cells are only transported to the support frame, and the TOPCon cells are tested. After the testing is completed, the TOPCon cells are packaged. When packaging, manual alignment and packaging are required. The TOPCon cells are moved by the transmission belt, and it cannot be guaranteed to be in the center position, which makes the testing and manual packaging inconvenient. Therefore, we propose a method for producing TOPCon cells with high sealing properties and a packaging method thereof. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a method for producing and packaging TOPCon cells with high sealing properties, which solves the problem that manual alignment and packaging are required during packaging, and the TOPCon cells are moved by a transmission belt, which cannot be guaranteed to be in the center position, resulting in inconvenience in detection and manual packaging.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a method for producing and packaging TOPCon cells with high sealing properties, step one: cleaning the pollutants on the surface of the silicon wafer, polishing the surface, and forming a velvet structure, using chemical methods to treat the surface of the silicon wafer to form a velvet surface with a certain degree of roughness to increase light absorption and reduce reflection, using gaseous boron trichloride, heating to 850-950°C in a quartz tube diffusion furnace, and allowing boron atoms to diffuse to the surface and body of the silicon wafer, and finally pushing the boron atoms to the surface of the silicon wafer at a high temperature of 1000-1050°C to form a PN junction.

[0006] Step 2: Use chemical etching to remove the borosilicate glass layer, use alkaline solution to polish the silicon wafer, further clean the surface of the silicon wafer, remove residues, and optimize the surface morphology. Use chemical vapor deposition and atomic layer deposition to prepare an ultra-thin tunneling silicon oxide layer, deposit an ultra-thin tunneling silicon oxide layer on the back of the silicon wafer as a passivation layer and tunneling layer to improve the photoelectric conversion efficiency of the battery, prepare a phosphorus-doped polysilicon layer by diffusion and deposition methods, and prepare a phosphorus-doped polysilicon layer on the tunneling silicon oxide layer as the back electrode layer of the battery.

[0007] Step 3: Use chemical etching to remove the phosphosilicate glass layer formed during the phosphorus diffusion process, use the standard RCA cleaning process to remove metal ions and other contaminants on the surface of the silicon wafer to ensure the cleanliness of the silicon wafer surface, and use atomic layer deposition to prepare an aluminum oxide layer. Deposit an aluminum oxide layer on the front of the silicon wafer as a passivation layer to reduce surface recombination losses.

[0008] Step 4: Use plasma enhanced chemical vapor deposition process to prepare silicon nitride layer, deposit silicon nitride layer on the front and back of silicon wafer respectively as anti-reflection film to improve light absorption efficiency, use screen printing technology to print silver paste conductive material on the surface of silicon wafer, print metal electrodes on the front and back of silicon wafer to form current extraction channel.

[0009] Step 5: Test the photoelectric conversion efficiency and performance parameters of the battery through light and electrical injection, conduct photoelectric performance tests on the battery to ensure that the battery performance meets the requirements, and package the TOPCon battery cells through packaging equipment.

[0010] The packaging device in step 5 includes a support frame, a support unit, a limit unit and a contact unit, wherein the support unit is located above the support frame, the bottom end surface of the support frame is fixedly connected to a fixing frame, the top end surface of the fixing frame is fixedly connected to a plurality of cylinders, the top end surface of the cylinder is fixedly connected to a connecting seat, the fixing frame is provided with a limit unit, and the contact unit is located on the limit unit. The support unit comprises a support seat fixedly connected to the top end surface of the support frame, a connecting shaft is fixedly connected to the inner wall of the support seat, and a plurality of transmission frames are slidably connected to the outer peripheral wall of the connecting shaft; The limiting unit includes limiting plates located on both sides of the connecting seat; The contact unit comprises a moving rod slidably connected to the inner wall of the connecting seat, and the top end surface of the moving rod is fixedly connected to the contact seat.

[0011] Preferably, a limiting seat is fixedly connected to the outer wall of the transmission frame, a transmission belt is transmission-connected to the outer peripheral wall of the transmission frame, and the limiting seat is slidably connected to the outer peripheral wall of the connecting shaft.

[0012] Preferably, a plurality of fixed blocks are fixedly connected to the top end surface of the support seat, a sliding rod is slidably connected to the inner wall of the fixed block, and a positioning block is fixedly connected to one end of the sliding rod.

[0013] Preferably, a first threaded rod is slidably connected to the inner wall of the fixing frame, a sliding seat is slidably connected to the outer peripheral wall of the first threaded rod, a nut limiting seat is rotatably connected to the outer peripheral wall of the sliding seat, and the nut limiting seat is threadedly connected to the first threaded rod.

[0014] Preferably, the outer peripheral wall of the sliding seat is rotatably connected to a rotating rod, the other end of the rotating rod is rotatably connected to a connecting plate, the connecting plate is fixedly connected to the limit plate, a telescopic rod is fixedly connected to the outer wall of the connecting plate, and the other end of the telescopic rod is fixedly connected to the connecting seat.

[0015] Preferably, a connecting block is attached to the bottom end surface of the connecting seat, and the connecting block is fixedly connected to the moving rod.

[0016] Preferably, a spring is sleeved on the outer peripheral wall of the moving rod, and two ends of the spring are fixedly connected to the contact seat and the connecting seat respectively.

[0017] Preferably, a plurality of second threaded rods are fixedly connected to both sides of the contact seat, and a support plate is slidably connected to the outer peripheral wall of the second threaded rod.

[0018] Preferably, the outer peripheral wall of the second threaded rod is threadedly connected with a nut seat, and the nut seat is in contact with two sides of the support plate.

[0019] The present invention discloses a method for producing a high-sealing TOPCon cell and a packaging method thereof, which has the following beneficial effects: The invention is used for producing TOPCon battery sheets with high sealing performance and a packaging method thereof. When the cylinder pushes the connecting seat to move, the spring is pushed to move under the movement of the connecting seat. Under the push of the spring, the contact seat moves upward and contacts the TOPCon battery sheet. At this time, the contact seat drives the moving rod to slide along the connecting seat. Under the movement of the moving rod, the connecting block and the first threaded rod move. At this time, the sliding seat moves relative to the connecting seat. Under the movement of the sliding seat, the rotating rod is driven to rotate. The connecting plate and the limiting plate are pulled to move by the rotating rod, so that the two limiting plates move toward each other, and the limiting plates contact and squeeze the TOPCon battery sheet, so as to limit the TOPCon battery sheet and facilitate the detection and packaging of the TOPCon battery sheet.

[0020] The invention is used for producing TOPCon battery sheets with high sealing performance and encapsulating method thereof. The cylinder drives the connecting seat to move, so that the connecting seat moves upward, drives the contact unit to move, and makes the contact unit push the TOPCon battery sheet to move upward, so as to facilitate the movement of the TOPCon battery sheet and encapsulate the TOPCon battery sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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 or the description of the prior art 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.

[0022] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the support unit structure of the present invention; Figure 3 It is a schematic diagram of the structure of the limiting unit and the contact unit of the present invention; Figure 4 Schematic diagram of the connection between the contact units of the present invention Figure 5 It is a schematic diagram of the contact unit structure of the present invention; Figure 6 It is a schematic diagram of the structure of the limiting unit of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of the middle part of the structure.

[0023] In the figure: 1. support frame; 2. support unit; 201. support seat; 202. connecting shaft; 203. transmission frame; 204. transmission belt; 205. limit seat; 3. fixed block; 301. sliding rod; 302. positioning block; 4. fixed frame; 401. cylinder; 402. connecting seat; 5. limit unit; 501. limit plate; 502. connecting plate; 503. rotating rod; 504. sliding seat; 505. first threaded rod; 506. nut limiting seat; 507. telescopic rod; 6. contact unit; 601. contact seat; 602. second threaded rod; 603. support plate; 604. moving rod; 605. connecting block; 606. spring. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are 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.

[0025] The embodiment of the present application provides a method for producing and packaging TOPCon cells with high sealing properties, which solves the problem that manual alignment and packaging are required during packaging. The TOPCon cells are driven to move by a transmission belt, but cannot be kept in the center, which makes detection and manual packaging inconvenient. When the cylinder 401 pushes the connecting seat 402 to move, the spring 606 is pushed to move under the movement of the connecting seat 402. When the contact seat 601 moves upward under the push of the spring 606, the contact seat 601 contacts the TOPCon cell. At this time, the contact The seat 601 drives the moving rod 604 to slide along the connecting seat 402. With the movement of the moving rod 604, the connecting block 605 and the first threaded rod 505 move. At this time, the sliding seat 504 moves relative to the connecting seat 402. With the movement of the sliding seat 504, the rotating rod 503 is driven to rotate. The connecting plate 502 and the limiting plate 501 are pulled to move by the rotating rod 503, so that the two limiting plates 501 move toward each other, and the limiting plates 501 contact and squeeze the TOPCon battery cell to limit the TOPCon battery cell, which is convenient for TOPCon battery cell detection and packaging.

[0026] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] Clean the pollutants on the surface of the silicon wafer, polish the surface, and form a suede structure. Use chemical methods to treat the surface of the silicon wafer to form a suede with a certain degree of roughness to increase light absorption and reduce reflection.

[0028] Using gaseous boron trichloride, the temperature is raised to 850-950°C in a quartz tube diffusion furnace, and the boron atoms diffuse to the surface and body of the silicon wafer. Finally, at a high temperature of 1000-1050°C, the boron atoms are pushed to the surface of the silicon wafer to form a PN junction.

[0029] The borosilicate glass layer is removed by chemical etching, and the silicon wafer is polished using an alkaline solution to further clean the surface of the silicon wafer, remove residues, and optimize the surface morphology.

[0030] An ultra-thin tunneling silicon oxide layer is prepared by chemical vapor deposition and atomic layer deposition. An ultra-thin tunneling silicon oxide layer is deposited on the back of the silicon wafer as a passivation layer and a tunneling layer to improve the photoelectric conversion efficiency of the battery. A phosphorus-doped polysilicon layer is prepared by diffusion and deposition methods, and a phosphorus-doped polysilicon layer is prepared on the tunneling silicon oxide layer as the back electrode layer of the battery.

[0031] Chemical etching is used to remove the phosphosilicate glass layer formed during the phosphorus diffusion process. The standard RCA cleaning process is used to remove metal ions and other contaminants on the surface of the silicon wafer to ensure the cleanliness of the silicon wafer surface. The aluminum oxide layer is prepared by atomic layer deposition. An aluminum oxide layer is deposited on the front of the silicon wafer as a passivation layer to reduce surface recombination losses.

[0032] The silicon nitride layer is prepared by plasma enhanced chemical vapor deposition process, and the silicon nitride layer is deposited on the front and back sides of the silicon wafer respectively as an anti-reflection film to improve the light absorption efficiency. The silver paste conductive material is printed on the surface of the silicon wafer by screen printing technology, and metal electrodes are printed on the front and back sides of the silicon wafer to form a current extraction channel.

[0033] The photoelectric conversion efficiency and performance parameters of the battery are tested by means of light and electrical injection, and the photoelectric performance of the battery is tested to ensure that the battery performance meets the requirements.

[0034] Various testing equipment and methods are used to perform performance testing and quality control on batteries.

[0035] The embodiment of the present invention discloses a method for producing a high-sealing TOPCon battery cell and a packaging method thereof.

[0036] According to the attached Figure 1-7 As shown, it includes a support frame 1, a support unit 2, a limiting unit 5 and a contact unit 6. The support unit 2 is located above the support frame 1. The bottom end surface of the support frame 1 is fixedly connected to a fixing frame 4. The top end surface of the fixing frame 4 is fixedly connected to a plurality of cylinders 401. The top end surface of the cylinder 401 is fixedly connected to a connecting seat 402. The connecting seat 402 is driven to move by the cylinder 401, so that the connecting seat 402 moves upward, and the contact unit 6 is driven to move, so that the contact unit 6 pushes the TOPCon battery sheet to move upward, which is convenient for moving the TOPCon battery sheet and packaging the TOPCon battery sheet. The limiting unit 5 is arranged on the fixing frame 4, and the contact unit 6 is located on the limiting unit 5. The support unit 2 includes a support base 201 fixedly connected to the top end surface of the support frame 1, a connecting shaft 202 is fixedly connected to the inner wall of the support base 201, and a plurality of transmission frames 203 are slidably connected to the outer peripheral wall of the connecting shaft 202. The transmission frames 203 slide along the connecting shaft 202, so that the transmission frames 203 can be adjusted relative to the size of the TOPCon battery sheet, so as to facilitate the support of the TOPCon battery sheet and the packaging of the TOPCon battery sheet; The limiting unit 5 includes limiting plates 501 located on both sides of the connecting seat 402. The connecting seat 402 is driven to move by the cylinder 401. When the connecting seat 402 moves, the connecting seat 402 drives the telescopic rod 507, the connecting plate 502 and the limiting plates 501 to move, so that the limiting plates 501 limit the TOPCon battery sheet. The contact unit 6 includes a moving rod 604 slidably connected to the inner wall of the connecting seat 402, and the top end surface of the moving rod 604 is fixedly connected to the contact seat 601. When the cylinder 401 pushes the connecting seat 402 to move, the spring 606 is pushed to move under the movement of the connecting seat 402. Under the push of the spring 606, the contact seat 601 moves upward, so that the contact seat 601 contacts the TOPCon battery sheet. At this time, the contact seat 601 drives the moving rod 604 to slide along the connecting seat 402. 04, the connecting block 605 and the first threaded rod 505 move. At this time, the sliding seat 504 moves relative to the connecting seat 402. The movement of the sliding seat 504 drives the rotating rod 503 to rotate. The connecting plate 502 and the limiting plate 501 are pulled to move by the rotating rod 503, so that the two limiting plates 501 move toward each other, and the limiting plates 501 contact and squeeze the TOPCon battery cell to limit the TOPCon battery cell, which is convenient for TOPCon battery cell detection and packaging.

[0037] A limit seat 205 is fixedly connected to the outer wall of the transmission frame 203, and a transmission belt 204 is transmission-connected to the outer peripheral wall of the transmission frame 203. The limit seat 205 is slidably connected to the outer peripheral wall of the connecting shaft 202. First, according to the size of the TOPCon battery sheet, the transmission frame 203 is pulled to slide along the connecting shaft 202, so that the transmission frame 203 drives the limit seat 205 to move. When the transmission frame 203 moves to a suitable position, the transmission frame 203 is fixed to the connecting shaft 202 by the bolts on the limit seat 205.

[0038] The TOPCon battery sheet is moved by the transmission belt 204 , and under the action of the transmission belt 204 , the TOPCon battery sheet is located directly above the contact seat 601 .

[0039] A plurality of fixed blocks 3 are fixedly connected to the top end surface of the support base 201, a sliding rod 301 is slidably connected to the inner wall of the fixed block 3, and a positioning block 302 is fixedly connected to one end of the sliding rod 301. The sliding rod 301 is adjusted to slide along the inner wall of the fixed block 3. As the sliding rod 301 moves, the sliding rod 301 drives the positioning block 302 to move, and the position of the TOPCon battery cell is limited by the positioning block 302.

[0040] A first threaded rod 505 is slidably connected to the inner wall of the fixing frame 4, a sliding seat 504 is slidably connected to the outer peripheral wall of the first threaded rod 505, a nut limiting seat 506 is rotatably connected to the outer peripheral wall of the sliding seat 504, and the nut limiting seat 506 is threadedly connected to the first threaded rod 505. When the cylinder 401 pushes the connecting seat 402 to move, the movement of the connecting seat 402 pushes the spring 606 to move, and the contact seat 601 moves upward under the push of the spring 606, so that the contact seat 601 contacts the TOPCon battery cell.

[0041] The outer peripheral wall of the sliding seat 504 is rotatably connected to the rotating rod 503, and the other end of the rotating rod 503 is rotatably connected to the connecting plate 502, and the connecting plate 502 is fixedly connected to the limiting plate 501. The outer wall of the connecting plate 502 is fixedly connected to the telescopic rod 507, and the other end of the telescopic rod 507 is fixedly connected to the connecting seat 402. By rotating the nut limiting seat 506 to rotate along the first threaded rod 505, the nut limiting seat 506 moves along the first threaded rod 505. Under the movement of the nut limiting seat 506, the nut The limiting seat 506 drives the sliding seat 504 to move, so that the sliding seat 504 drives the rotating rod 503 to rotate, and the connecting plate 502 is pulled to move under the rotation of the rotating rod 503. At this time, the connecting plate 502 drives the rotating rod 503 to extend and retract, so that the connecting plate 502 moves relative to the connecting seat 402. Under the movement of the connecting plate 502, the limiting plate 501 moves accordingly. The limiting plate 501 is adjusted to limit the TOPCon battery cell, which is convenient for limiting the TOPCon battery cell of a specified size.

[0042] A connecting block 605 is attached to the bottom end surface of the connecting seat 402, and the connecting block 605 is fixedly connected to the moving rod 604. When the contact seat 601 contacts the TOPCon battery cell, the contact seat 601 pushes the moving rod 604 to slide along the connecting seat 402 under the weight of the TOPCon battery cell, so that the connecting block 605 and the first threaded rod 505 move accordingly.

[0043] The outer peripheral wall of the moving rod 604 is sleeved with a spring 606, and the two ends of the spring 606 are respectively fixedly connected to the contact seat 601 and the connecting seat 402. At this time, the contact seat 601 compresses the spring 606, and at the same time, the movement of the moving rod 604 causes the spring 606 to move, driving the first threaded rod 505 to move, and the movement of the first threaded rod 505 causes the sliding seat 504 to move accordingly; At this time, the sliding seat 504 moves relative to the connecting seat 402. The movement of the sliding seat 504 drives the rotating rod 503 to rotate. The connecting plate 502 and the limiting plate 501 are pulled to move by the rotating rod 503, so that the two limiting plates 501 move toward each other. The limiting plates 501 contact and squeeze the TOPCon battery cells, so as to limit the TOPCon battery cells and facilitate the detection and packaging of the TOPCon battery cells.

[0044] A plurality of second threaded rods 602 are fixedly connected to both sides of the contact seat 601 , and a support plate 603 is slidably connected to the outer peripheral wall of the second threaded rod 602 .

[0045] The outer wall of the second threaded rod 602 is threadedly connected with a nut seat, and the nut seat fits against both sides of the support plate 603. The support plate 603 is slid along the second threaded rod 602 by adjusting. When the support plate 603 moves to a suitable position along the second threaded rod 602, the support plate 603 is limited by the nut seat. At this time, the TOPCon battery cell is supported by the contact seat 601 and multiple support plates 603.

[0046] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A method for producing a high-sealing TOPCon cell and encapsulating the cell, comprising the following steps: Step 1: Clean the pollutants on the surface of the silicon wafer, polish the surface, and form a velvet structure. Use chemical methods to treat the surface of the silicon wafer to form a velvet surface with a certain degree of roughness to increase light absorption and reduce reflection. Use gaseous boron trichloride and heat it to 850-950°C in a quartz tube diffusion furnace. Boron atoms diffuse to the surface and body of the silicon wafer. Finally, at a high temperature of 1000-1050°C, the boron atoms are pushed to the surface of the silicon wafer to form a PN junction. Step 2: Use chemical etching to remove the borosilicate glass layer, use alkaline solution to polish the silicon wafer, further clean the surface of the silicon wafer, remove residues, and optimize the surface morphology; use chemical vapor deposition and atomic layer deposition to prepare an ultra-thin tunneling silicon oxide layer, deposit an ultra-thin tunneling silicon oxide layer on the back of the silicon wafer as a passivation layer and tunneling layer to improve the photoelectric conversion efficiency of the battery, prepare a phosphorus-doped polysilicon layer by diffusion and deposition, and prepare a phosphorus-doped polysilicon layer on the tunneling silicon oxide layer as the back electrode layer of the battery; Step 3: Chemical etching is used to remove the phosphorus silicon glass layer formed during the phosphorus diffusion process. The standard RCA cleaning process is used to clean the silicon wafer surface to remove metal ions and other contaminants to ensure the cleanliness of the silicon wafer surface. The aluminum oxide layer is prepared by atomic layer deposition. An aluminum oxide layer is deposited on the front of the silicon wafer as a passivation layer to reduce surface recombination losses. Step 4: Prepare a silicon nitride layer using plasma enhanced chemical vapor deposition process, deposit silicon nitride layers on the front and back of the silicon wafer as an anti-reflection film to improve light absorption efficiency, print silver paste conductive material on the surface of the silicon wafer using screen printing technology, and print metal electrodes on the front and back of the silicon wafer to form a current extraction channel; Step 5: Test the photoelectric conversion efficiency and performance parameters of the battery by means of light and electrical injection, conduct photoelectric performance tests on the battery to ensure that the battery performance meets the requirements, and package the TOPCon battery cells through packaging equipment; The packaging device comprises a support frame (1), a support unit (2), a limiting unit (5) and a contact unit (6); the support unit (2) is located above the support frame (1); the bottom end surface of the support frame (1) is fixedly connected to a fixing frame (4); the top end surface of the fixing frame (4) is fixedly connected to a plurality of cylinders (401); the top end surface of the cylinder (401) is fixedly connected to a connecting seat (402); the limiting unit (5) is arranged on the fixing frame (4); and the contact unit (6) is located on the limiting unit (5); The support unit (2) comprises a support seat (201) fixedly connected to the top end surface of the support frame (1), a connecting shaft (202) fixedly connected to the inner wall of the support seat (201), and a plurality of transmission frames (203) slidably connected to the outer peripheral wall of the connecting shaft (202); The limiting unit (5) comprises limiting plates (501) located on both sides of the connecting seat (402); The contact unit (6) comprises a moving rod (604) slidably connected to the inner wall of the connecting seat (402), and the top end surface of the moving rod (604) is fixedly connected to the contact seat (601).

2. The method for producing and packaging a high-sealing TOPCon cell according to claim 1, characterized in that: A limiting seat (205) is fixedly connected to the outer wall of the transmission frame (203), a transmission belt (204) is transmission-connected to the outer peripheral wall of the transmission frame (203), and the limiting seat (205) is slidably connected to the outer peripheral wall of the connecting shaft (202).

3. The method for producing and packaging a high-sealing TOPCon cell according to claim 2, characterized in that: A plurality of fixed blocks (3) are fixedly connected to the top end surface of the support seat (201), a sliding rod (301) is slidably connected to the inner wall of the fixed block (3), and a positioning block (302) is fixedly connected to one end of the sliding rod (301).

4. The method for producing and packaging a high-sealing TOPCon cell according to claim 3, characterized in that: A first threaded rod (505) is slidably connected to the inner wall of the fixing frame (4); a sliding seat (504) is slidably connected to the outer wall of the first threaded rod (505); a nut limiting seat (506) is rotatably connected to the outer wall of the sliding seat (504); and the nut limiting seat (506) is threadedly connected to the first threaded rod (505).

5. The method for producing and packaging a high-sealing TOPCon cell according to claim 4, characterized in that: The outer peripheral wall of the sliding seat (504) is rotatably connected to a rotating rod (503), the other end of the rotating rod (503) is rotatably connected to a connecting plate (502), the connecting plate (502) is fixedly connected to the limiting plate (501), the outer wall of the connecting plate (502) is fixedly connected to a telescopic rod (507), the other end of the telescopic rod (507) is fixedly connected to the connecting seat (402).

6. The method for producing and packaging a high-sealing TOPCon cell according to claim 5, characterized in that: A connecting block (605) is attached to the bottom end surface of the connecting seat (402), and the connecting block (605) is fixedly connected to the moving rod (604).

7. The method for producing and packaging a high-sealing TOPCon cell according to claim 6, characterized in that: A spring (606) is sleeved on the outer peripheral wall of the moving rod (604), and two ends of the spring (606) are respectively fixedly connected to the contact seat (601) and the connecting seat (402).

8. The method for producing and packaging a high-sealing TOPCon cell according to claim 7, characterized in that: A plurality of second threaded rods (602) are respectively fixedly connected to both sides of the contact seat (601), and a support plate (603) is slidably connected to the outer peripheral wall of the second threaded rod (602).

9. The method for producing and packaging a high-sealing TOPCon cell according to claim 8, characterized in that: The outer peripheral wall of the second threaded rod (602) is threadedly connected to a nut seat, and the nut seat is fitted with two sides of the support plate (603).

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