Waterproof permeable HJT battery piece production and processing method

Abstract

The invention discloses a waterproof transparent HJT battery piece production and processing method, and relates to the field of HJT battery pieces. According to the waterproof permeable HJT battery piece production and processing method, a supporting frame, two driving units, a plurality of rotating units and two transmission units are included. According to the waterproof transparent HJT battery piece production and processing method, when a placement frame moves, a second rotating block moves to enable a threaded rod and a rotating rod to rotate and pull connecting seats to move, at the moment, the two connecting seats move oppositely to drive a pushing seat to move along with the connecting seats, the pushing seat pushes a frame on a transmission frame to move, and the frame on the transmission frame is driven to move; and when the pushing seat is in contact with the frame, the pushing seat drives the moving rod to slide along the inner wall of the fixed seat, at the moment, under the extrusion of the pushing seat, the frame is in contact with the HJT battery piece, the placing rack continues to move at the moment, the frame on the placing rack is attached to the frame at the position of the pushing seat correspondingly, and then splicing of the frame is completed.

Description

Technical Field

[0001] The present invention relates to the technical field of HJT battery cells, and in particular to a production method and a processing method of a waterproof and permeable HJT battery cell. Background Art

[0002] HJT cells are hybrid solar cells made of crystalline silicon as a substrate and amorphous silicon thin film. Their PN junctions are made of different semiconductor materials and are the same as the standard crystalline silicon solar cells.

[0003] In the production process of HJT cells, it is necessary to go through processes such as silicon substrate preparation, initial polishing and impurity gettering, silicon wafer texturing and cleaning, thin film deposition, metallization and packaging to complete the production of HJT cells, and finally carry out quality control and inspection of HJT cells.

[0004] When packaging HJT battery cells, it is usually necessary to install the sealing frame twice for packaging. In the prior art, when packaging HJT battery cells, it is necessary to first limit the sealing frame, and then align multiple sealing frames, and complete the connection of the sealing frames by pushing the sealing frames for plugging. When installing the sealing frames, it is necessary to manually limit the sealing frames. When the positions of multiple sealing frames cannot be aligned, the sealing frames cannot be spliced, resulting in failure of packaging the HJT battery cells. Therefore, we propose a method for producing and processing HJT battery cells based on waterproof and permeable. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a method for producing and processing waterproof and permeable HJT battery cells, which solves the problem that when installing the sealing frame, the sealing frame needs to be manually limited. When the positions of multiple sealing frames cannot be aligned, the sealing frames cannot be spliced, resulting in failure of HJT battery cell packaging.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a method for producing and processing waterproof HJT cells, step one, selecting a high-quality n-type silicon substrate as the basis of the cell through the silicon substrate, the silicon substrate needs to undergo impurity removal, grinding and cleaning process steps to ensure its surface quality and purity.

[0007] The resistivity of the silicon wafers is then differentiated through a silicon wafer sorter. Those with resistivity values ​​in the range of 1.0-1.6 are high-quality silicon wafers, and the rest are low-quality silicon wafers.

[0008] Step 2: For low-quality silicon wafers, perform initial polishing to remove particles and organic matter on the surface of the silicon wafer and slightly remove the damaged layer. The initial polishing process uses ozone cleaning + initial polishing + ozone cleaning process, and finally hydrofluoric acid cleaning, slow pulling, and drying.

[0009] The purpose of doping silicon wafers is to generate a doped diffusion layer on the surface of the silicon wafer. Due to the different solubility of impurities in the silicon wafer and the diffusion layer, more metal ions such as Cr and Fe are adsorbed in the diffusion layer so that they can be removed in subsequent processes.

[0010] Step three: Use NaOH etching solution to anisotropically etch the N-type silicon wafer, and etch the Si (100) crystal plane into a square pyramid structure of the Si (111) crystal plane to reduce the surface reflectivity of the silicon wafer and improve the photoelectric conversion efficiency. Then use ultrasonic cleaning method to remove dirt on the surface of the silicon wafer to ensure the cleanliness of the silicon wafer surface.

[0011] Step 4: After cleaning, use plasma enhanced chemical vapor deposition technology to deposit intrinsic amorphous silicon film layers and doped microcrystalline silicon film layers on the front and back sides of the silicon wafer.

[0012] Using physical vapor deposition technology, transparent conductive oxide films such as tin fluoride, tin oxide and zinc oxide are deposited on the front and back of the silicon wafer to improve the conductivity and transparency of the battery.

[0013] At this time, gate line electrodes are printed on the front and back sides of the battery cell to collect current, and then the printed electrodes are subjected to low-temperature curing treatment to enhance the bonding strength between the electrodes and the silicon wafer.

[0014] Step 5: At this time, the silicon substrate can be cut into smaller cells using laser and mechanical cutting technology. A layer of transparent packaging material such as polymer and glass is coated on the front of the cell to protect the cell and enhance transparency. The positive and negative electrodes are connected to the cell to conduct current. Finally, the cell is packaged through packaging equipment and protective shells for subsequent use and installation. The packaging device in step 5 includes a support frame, two driving units, a plurality of rotating units and two transmission units. A plurality of the driving units are mounted on a support frame, wherein the driving units include a connecting frame slidably connected to the support frame, a connecting column is fixedly connected to the bottom end surface of the connecting frame, a connecting plate is mounted on the plurality of connecting columns, and a placement frame is fixedly connected to the outer wall of the connecting plate; The placing rack is slidably connected with a limiting unit, and the limiting unit includes a limiting block slidably connected to the placing rack; The rotating unit is arranged between the driving unit and the transmission unit, and the rotating unit comprises a threaded rod rotatably connected to the placement frame, and the rotating rod is slidably connected to the outer peripheral wall of the threaded rod; The transmission unit is connected to one end of the driving unit, and the transmission unit includes a connecting seat rotatably connected to the rotating rod, the connecting seat is fixedly connected to the supporting frame, and a pushing seat is arranged on the front side of the connecting seat.

[0015] Preferably, a plurality of transmission frames are fixedly mounted on the support frame, and a transmission belt is connected to the transmission frame for transmission.

[0016] Preferably, a cylinder is fixedly connected to the top end surface of the support frame, and an output end of the cylinder is fixedly connected to the connecting frame.

[0017] Preferably, a sliding seat is installed on the placement rack by bolts, a sliding rod is slidably connected to the inner wall of the sliding seat, one end of the sliding rod is fixedly connected to a limiting block, a limiting spring is sleeved on the outer peripheral wall of the sliding rod, and both ends of the limiting spring are fixedly connected to the sliding seat and the limiting block respectively.

[0018] Preferably, a second rotating block is rotatably connected to the outer wall of the placement rack, the second rotating block is fixedly connected to the threaded rod, the outer peripheral wall of the threaded rod is threadedly connected to a nut seat, the nut seat is rotatably connected to the rotating rod, and the first rotating block is fixedly connected to one end of the rotating rod away from the threaded rod.

[0019] Preferably, the first rotating block is rotatably connected to the connecting seat, a screw rod is slidably connected to the inner wall of the connecting seat, a transmission wheel is threadedly connected to the outer peripheral wall of the screw rod, the transmission wheel is rotatably connected to the connecting seat, and the outer peripheral walls of two corresponding transmission wheels are interference fit with transmission belts, and one end of one of the transmission wheels is connected to a driving mechanism.

[0020] Preferably, the end of the screw rod is rotatably connected to a fixed seat, a moving rod is slidably connected to the inner wall of the fixed seat, and one end of the moving rod is fixedly connected to the pushing seat.

[0021] Preferably, a push spring is sleeved on the outer peripheral wall of the moving rod, one end of the push spring is fixedly connected to the fixing seat, and the other end of the push spring is fixedly connected to the pushing seat.

[0022] The present invention discloses a production method and processing method of a waterproof and permeable HJT battery sheet, which has the following beneficial effects: The waterproof and permeable HJT battery cell production and processing method are based on this. When the cylinder drives the placement rack to move, the second rotating block moves to rotate the threaded rod and the rotating rod, pulling the connecting seat to move. At this time, the two connecting seats move toward each other, driving the pushing seat to move accordingly, so that the pushing seat pushes the frame on the transmission rack to move. When the pushing seat contacts the frame, the pushing seat drives the moving rod to slide along the inner wall of the fixed seat. At this time, under the extrusion of the pushing seat, the frame contacts the HJT battery cell. At this time, the placement rack continues to move, so that the frame on the placement rack fits with the frame at the pushing seat, thereby completing the splicing of the frame.

[0023] The waterproof and permeable HJT battery cell production and processing method is based on rotating the nut seat so that the nut seat rotates along the outer peripheral wall of the threaded rod. At this time, the threaded rod slides along the inner wall of the rotating rod under the rotation of the nut seat. The threaded rod and the rotating rod are driven to rotate under the movement of the threaded rod. At this time, the rotation of the rotating rod and the threaded rod drives the placement rack to move, so that the placement rack moves toward the HJT battery cell. By adjusting the position of the placement rack, the size of HJT battery cells of different sizes can be conveniently adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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.

[0025] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the connection between the driving unit and the transmission unit of the present invention; Figure 3 It is a schematic diagram of the connection between the driving unit and the rotating unit of the present invention; Figure 4 This is a schematic diagram of the structure of the drive unit of the present invention; Figure 5 This is a schematic diagram of the unit structure defined in the present invention; Figure 6 It is a schematic diagram of the structure of the rotating unit of the present invention; Figure 7 It is a schematic diagram of the transmission unit structure of the present invention.

[0026] In the figure: 1. support frame; 2. transmission frame; 3. drive unit; 301. connecting frame; 302. connecting column; 303. connecting plate; 304. placement frame; 305. cylinder; 4. limiting unit; 401. sliding seat; 402. sliding rod; 403. limiting spring; 404. limiting block; 5. rotating unit; 501. rotating rod; 502. threaded rod; 503. nut seat; 504. first rotating block; 505. second rotating block; 6. transmission unit; 601. connecting seat; 602. screw rod; 603. fixed seat; 604. pushing seat; 605. transmission wheel; 606. transmission belt; 607. pushing spring; 608. moving rod. DETAILED DESCRIPTION

[0027] 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.

[0028] The embodiment of the present application provides a method for producing and processing waterproof and permeable HJT battery cells, which solves the problem that when installing a sealing frame, the sealing frame needs to be manually limited. When the positions of multiple sealing frames cannot be aligned, the sealing frames cannot be spliced, resulting in failure to package the HJT battery cells. When the cylinder 305 drives the placement rack 304 to move, the second rotating block 505 moves to rotate the threaded rod 502 and the rotating rod 501, pulling the connecting seat 601 to move. At this time, the two connecting seats 601 move toward each other, driving the pushing seat 604 to move accordingly, so that the pushing seat 604 pushes the frame on the transmission rack 2 to move. When the pushing seat 604 contacts the frame, the pushing seat 604 drives the moving rod 608 to slide along the inner wall of the fixed seat 603. At this time, under the extrusion of the pushing seat 604, the frame contacts the HJT battery cell. At this time, the placement rack 304 continues to move, so that the frame on the placement rack 304 fits the frame at the corresponding pushing seat 604, thereby completing the splicing of the frame.

[0029] 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.

[0030] The embodiment of the present invention discloses a production method and a processing method of a waterproof and permeable HJT battery cell.

[0031] First, high-quality n-type silicon substrates are selected as the basis of the solar cell. The silicon substrates need to go through the steps of impurity removal, grinding and cleaning to ensure their surface quality and purity.

[0032] The resistivity of the silicon wafers is then differentiated through a silicon wafer sorter. Those with resistivity values ​​in the range of 1.0-1.6 are high-quality silicon wafers, and the rest are low-quality silicon wafers.

[0033] For low-quality silicon wafers, initial polishing is performed to remove particles and organic matter on the surface of the silicon wafer and slightly remove the damaged layer. The initial polishing process uses ozone cleaning + initial polishing + ozone cleaning process, and finally hydrofluoric acid cleaning, slow pulling, and drying.

[0034] The purpose of doping silicon wafers is to generate a doped diffusion layer on the surface of the silicon wafer. Due to the different solubility of impurities in the silicon wafer and the diffusion layer, more metal ions such as Cr and Fe are adsorbed in the diffusion layer so that they can be removed in subsequent processes.

[0035] The N-type silicon wafer is anisotropically etched using NaOH etching solution to etch the Si (100) crystal plane into a square pyramid structure of the Si (111) crystal plane, thereby reducing the surface reflectivity of the silicon wafer and improving the photoelectric conversion efficiency.

[0036] Then use ultrasonic cleaning method to remove dirt on the surface of the silicon wafer to ensure that the surface of the silicon wafer is clean.

[0037] After cleaning, plasma enhanced chemical vapor deposition technology is used to deposit intrinsic amorphous silicon film layers and doped microcrystalline silicon film layers on the front and back sides of the silicon wafer.

[0038] Using physical vapor deposition technology, transparent conductive oxide films such as tin fluoride, tin oxide and zinc oxide are deposited on the front and back of the silicon wafer to improve the conductivity and transparency of the battery.

[0039] At this time, gate line electrodes are printed on the front and back sides of the battery cell to collect current, and then the printed electrodes are subjected to low-temperature curing treatment to enhance the bonding strength between the electrodes and the silicon wafer.

[0040] At this point, laser and mechanical cutting technology can be used to cut the silicon substrate into smaller battery cells, and a layer of transparent packaging material such as polymer and glass is coated on the front of the battery cell to protect the battery cell and enhance transparency. The positive and negative electrodes are connected to the battery cell to conduct current. Finally, the battery cell is packaged through packaging equipment and a protective shell for subsequent use and installation.

[0041] According to the attached Figure 1-7 As shown, it includes a support frame 1, two driving units 3, a plurality of rotating units 5 and two transmission units 6. A plurality of driving units 3 are installed on the support frame 1, and the driving units 3 include a connecting frame 301 slidably connected to the support frame 1, a connecting column 302 is fixedly connected to the bottom end surface of the connecting frame 301, a connecting plate 303 is installed on a plurality of connecting columns 302, and a placing frame 304 is fixedly connected to the outer wall of the connecting plate 303, and the connecting frame 301 is driven to move by the cylinder 305, so that the connecting frame 301 drives the connecting column 302 and the connecting plate 303 to move accordingly, and at this time, the connecting plate 303 moves, so that the placing frame 304 moves accordingly, so that the placing frame 304 moves toward the HJT battery cell on the transmission frame 2, and at this time, the frame on the placing frame 304 moves, moves toward the HJT battery cell, so that the frame fits the HJT battery cell; The placing rack 304 is slidably connected with a limiting unit 4, which includes a limiting block 404 slidably connected to the placing rack 304. By placing the frame on the placing rack 304, the frame is fitted with two limiting blocks 404, so that the frame contacts the limiting blocks 404. At this time, the limiting blocks 404 are pushed to drive the sliding rod 402 to slide along the sliding seat 401. The limiting blocks 404 compress the limiting springs 403. Under the rebound of the limiting springs 403, the limiting blocks 404 contact and squeeze the frame to limit the frame. The rotating unit 5 is arranged between the driving unit 3 and the transmission unit 6, and the rotating unit 5 includes a threaded rod 502 rotatably connected to the placement rack 304, and a rotating rod 501 is slidably connected to the outer peripheral wall of the threaded rod 502. By rotating the nut seat 503, the nut seat 503 is rotated along the outer peripheral wall of the threaded rod 502. At this time, under the rotation of the nut seat 503, the threaded rod 502 slides along the inner wall of the rotating rod 501, and under the movement of the threaded rod 502, the threaded rod 502 and the rotating rod 501 are driven to rotate. At this time, the rotating rod 501 and the threaded rod 502 rotate to drive the placement rack 304 to move, so that the placement rack 304 moves toward the HJT battery cell. By adjusting the position of the placement rack 304, it is convenient to adjust the size of HJT battery cells of different sizes; The transmission unit 6 is connected to one end of the driving unit 3, and the transmission unit 6 includes a connecting seat 601 rotatably connected to the rotating rod 501, and the connecting seat 601 is fixedly connected to the support frame 1. A pushing seat 604 is arranged on the front of the connecting seat 601. When the cylinder 305 drives the placement frame 304 to move, the second rotating block 505 moves to rotate the threaded rod 502 and the rotating rod 501, and pulls the connecting seat 601 to move. At this time, the two connecting seats 601 move toward each other, driving the pushing seat 604 to move accordingly, so that the pushing seat 604 pushes the frame on the transmission frame 2 to move. When the pushing seat 604 contacts the frame, the pushing seat 604 drives the moving rod 608 to slide along the inner wall of the fixed seat 603. At this time, under the extrusion of the pushing seat 604, the frame contacts the HJT battery cell. At this time, the placement rack 304 continues to move, so that the frame on the placement rack 304 fits with the frame at the pushing seat 604, thereby completing the splicing of the frame, avoiding the occurrence of splicing failure, and completing the limitation of the HJT battery cell. A sealing gasket is fixedly connected to the inside of the frame, which ensures the sealing effect of pulling on the HJT battery cell to effectively prevent water penetration.

[0042] A plurality of transmission frames 2 are fixedly mounted on the support frame 1, and a transmission belt is connected to the transmission frame 2. The HJT battery cell is placed on the transmission frame 2, and the transmission belt drives the HJT battery cell to move to the center position.

[0043] The top end face of the support frame 1 is fixedly connected with a cylinder 305, and the output end of the cylinder 305 is fixedly connected to the connecting frame 301. The connecting frame 301 is driven to move by the cylinder 305, so that the connecting frame 301 drives the connecting column 302 to move. At this time, the movement of the connecting column 302 causes the connecting plate 303 to move accordingly, and the placement frame 304 moves accordingly, so that the placement frame 304 moves toward the HJT battery cell on the transmission frame 2, pushing the frame on the placement frame 304 to move toward the HJT battery cell.

[0044] The placement rack 304 is provided with a sliding seat 401 by bolts, and a sliding rod 402 is slidably connected to the inner wall of the sliding seat 401, and one end of the sliding rod 402 is fixedly connected to the limit block 404, and a limit spring 403 is sleeved on the outer peripheral wall of the sliding rod 402, and the two ends of the limit spring 403 are respectively fixedly connected to the sliding seat 401 and the limit block 404. According to the size of the frame, the sliding seat 401 is adjusted to move on the placement rack 304, so that the sliding seat 401 drives the sliding rod 402 to move The sliding rod 402 moves, and the sliding seat 401 and the limit block 404 move. At this time, the limit block 404 contacts the frame, so that the limit block 404 pushes the sliding rod 402 to slide along the inner wall of the sliding seat 401. Under the movement of the sliding rod 402, the limit block 404 compresses the limit spring 403. Under the rebound of the limit spring 403, the limit spring 403 pushes the limit block 404 to contact and squeeze the frame, thereby limiting the frame on the placement rack 304.

[0045] The outer wall of the placement rack 304 is rotatably connected with a second rotating block 505, and the second rotating block 505 is fixedly connected to the threaded rod 502. The outer peripheral wall of the threaded rod 502 is threadedly connected with a nut seat 503, and the nut seat 503 is rotatably connected to the rotating rod 501. The end of the rotating rod 501 away from the threaded rod 502 is fixedly connected with the first rotating block 504. By rotating the nut seat 503, the nut seat 503 is rotated along the outer peripheral wall of the threaded rod 502. At this time, under the rotation of the nut seat 503, the threaded rod 502 slides along the inner wall of the rotating rod 501. Under the movement of the threaded rod 502, the threaded rod 502 and the rotating rod 501 are driven to rotate. At this time, the rotating rod 501 and the threaded rod 502 rotate to drive the placement rack 304 to move, so that the placement rack 304 moves toward the HJT battery cell. By adjusting the position of the placement rack 304, the size of HJT battery cells of different sizes can be conveniently adjusted. When the placement rack 304 moves, the placement rack 304 drives the second rotating block 505 to move. At this time, the second rotating block 505 rotates on the placement rack 304. Under the rotation of the second rotating block 505, the second rotating block 505 drives the threaded rod 502 and the rotating rod 501 to rotate.

[0046] The first rotating block 504 is rotatably connected to the connecting seat 601, and a screw rod 602 is slidably connected to the inner wall of the connecting seat 601, so that the rotating rod 501 drives the first rotating block 504 to rotate on the connecting seat 601. At this time, under the rotation of the rotating rod 501 and the threaded rod 502, the connecting seat 601 is pushed to move, so that the connecting seat 601 slides on the support frame 1.

[0047] The outer wall of the screw rod 602 is threadedly connected to a transmission wheel 605, which is rotatably connected to the connecting seat 601. The outer walls of the two corresponding transmission wheels 605 are interference-fitted with a transmission belt 606. One end of one of the transmission wheels 605 is connected to a driving mechanism, which drives the transmission wheel 605 to rotate. The rotation of the transmission wheel 605 causes the transmission belt 606 to transmit power. The rotation of the transmission belt 606 causes the two transmission wheels 605 to rotate, driving the screw rod 602 to move, thereby facilitating the adjustment of the position of the fixed seat 603, so that the fixed seat 603 drives the pushing seat 604 to move accordingly, corresponding to different sizes of HJT battery cells.

[0048] The end of the screw rod 602 is rotatably connected to the fixed seat 603, and the inner wall of the fixed seat 603 is slidably connected to the moving rod 608, one end of the moving rod 608 is fixedly connected to the pushing seat 604, and the outer peripheral wall of the moving rod 608 is sleeved with a pushing spring 607, one end of the pushing spring 607 is fixedly connected to the fixed seat 603, and the other end of the pushing spring 607 is fixedly connected to the pushing seat 604. When the connecting seat 601 slides on the support frame 1, the connecting seat 601 drives the screw rod 602 and the fixed seat 603 to move, and the pushing spring 607 makes the pushing seat 604 move accordingly. At this time, the pushing seat 604 pushes the frame to move, so that the frame contacts the HJT battery sheet. When the placement rack 304 continues to move, the frame on the placement rack 304 is pushed to move, and the connecting seat 601 continues to move, so that the screw rod 602 and the fixed seat 603 move at the same time, and the pushing seat 604 drives the moving rod 608 to slide along the inner wall of the fixed seat 603, so that the moving rod 608 compresses the pushing spring 607; When the frame on the placement rack 304 moves toward the frame on the push seat 604, the corresponding frames are plugged in, and the frames are spliced ​​to complete the assembly of the HJT battery sheet.

[0049] Working principle: Place the HJT battery cell on the transmission frame 2, drive the HJT battery cell to move to the center position through the transmission belt, drive the connecting frame 301 to move through the cylinder 305, so that the connecting frame 301 drives the connecting column 302 to move, and the connecting column 302 moves so that the connecting plate 303 moves accordingly, and the placement frame 304 moves accordingly, so that the placement frame 304 moves toward the HJT battery cell on the transmission frame 2, and pushes the frame on the placement frame 304 to move toward the HJT battery cell; By placing the frame on the placement rack 304, the limiting block 404 contacts the frame, so that the limiting block 404 pushes the sliding rod 402 to slide along the inner wall of the sliding seat 401. Under the movement of the sliding rod 402, the limiting block 404 compresses the limiting spring 403. Under the rebound of the limiting spring 403, the limiting spring 403 pushes the limiting block 404 to contact and squeeze the frame, so that the frame on the placement rack 304 is limited; When the placement rack 304 moves, the placement rack 304 drives the second rotating block 505 to move. At this time, the second rotating block 505 rotates on the placement rack 304. Under the rotation of the second rotating block 505, the second rotating block 505 drives the threaded rod 502 and the rotating rod 501 to rotate; The rotating rod 501 drives the first rotating block 504 to rotate on the connecting seat 601. At this time, the connecting seat 601 is pushed to move under the rotation of the rotating rod 501 and the threaded rod 502, so that the connecting seat 601 slides on the supporting frame 1; When the connection seat 601 slides on the support frame 1, the connection seat 601 drives the screw rod 602 and the fixing seat 603 to move, and the pushing spring 607 causes the pushing seat 604 to move accordingly. At this time, the pushing seat 604 pushes the frame to move, so that the frame contacts the HJT battery cell. When the placement rack 304 continues to move, the frame on the placement rack 304 is pushed to move, and the connecting seat 601 continues to move, so that the screw rod 602 and the fixed seat 603 move at the same time, and the pushing seat 604 drives the moving rod 608 to slide along the inner wall of the fixed seat 603, so that the moving rod 608 compresses the pushing spring 607; When the frame on the placement rack 304 moves toward the frame on the push seat 604, the corresponding frames are plugged in, and the frames are spliced ​​to complete the assembly of the HJT battery sheet.

[0050] 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 and processing a waterproof HJT cell sheet, comprising the following methods: Step 1: Select high-quality n-type silicon substrate as the basis of the cell through the silicon substrate. The silicon substrate needs to go through the steps of impurity removal, grinding and cleaning to ensure its surface quality and purity; The resistivity of the silicon wafers is then distinguished by a silicon wafer sorter. The resistivity values ​​in the range of 1.0-1.6 are high-quality silicon wafers, and the rest are low-quality silicon wafers. Step 2: For low-quality silicon wafers, perform initial polishing to remove particles and organic matter on the surface of the silicon wafer and slightly remove the damaged layer; the initial polishing process uses ozone cleaning, initial polishing and ozone cleaning processes, and finally hydrofluoric acid cleaning, slow pulling, and drying; The purpose of gettingtering the silicon wafer is to generate a doped diffusion layer on the surface of the silicon wafer. Due to the different solubility of impurities in the silicon wafer and the diffusion layer, more metal ions such as Cr and Fe are adsorbed in the diffusion layer so that they can be removed in subsequent processes. Step 3: Anisotropically etch the N-type silicon wafer using NaOH etching solution to etch the Si100 crystal plane into a square pyramid structure of the Si111 crystal plane, so as to reduce the surface reflectivity of the silicon wafer and improve the photoelectric conversion efficiency. Then, an ultrasonic cleaning method is used to remove dirt on the surface of the silicon wafer to ensure that the surface of the silicon wafer is clean. Step 4: After cleaning, use plasma enhanced chemical vapor deposition technology to deposit an intrinsic amorphous silicon film layer and a doped microcrystalline silicon film layer on the front and back sides of the silicon wafer; Using physical vapor deposition technology, transparent conductive oxide films such as tin fluoride, tin oxide and zinc oxide are deposited on the front and back of the silicon wafer to improve the conductivity and transparency of the battery; At this time, gate electrodes are printed on the front and back of the cell to collect current, and then the printed electrodes are subjected to low-temperature curing treatment to enhance the bonding strength between the electrodes and the silicon wafer; Step 5: At this time, the silicon substrate can be cut into small cells using laser and mechanical cutting technology. A layer of transparent packaging material such as polymer and glass is coated on the front of the cell to protect the cell and enhance transparency. The positive and negative electrodes are connected to the cell to conduct current. Finally, the cell is packaged through packaging equipment and protective shells for subsequent use and installation. The packaging device comprises a support frame (1), two driving units (3), a plurality of rotating units (5) and two transmission units (6); A plurality of the driving units (3) are mounted on a support frame (1), the driving units (3) comprising a connecting frame (301) slidably connected to the support frame (1), a connecting column (302) being fixedly connected to the bottom end surface of the connecting frame (301), a connecting plate (303) being mounted on the plurality of connecting columns (302), and a placement frame (304) being fixedly connected to the outer wall of the connecting plate (303); A limiting unit (4) is slidably connected to the placement rack (304), and the limiting unit (4) comprises a limiting block (404) slidably connected to the placement rack (304); The rotating unit (5) is arranged between the driving unit (3) and the transmission unit (6), and comprises a threaded rod (502) rotatably connected to the placement frame (304), and a rotating rod (501) is slidably connected to the outer peripheral wall of the threaded rod (502); The transmission unit (6) is connected to one end of the driving unit (3), and the transmission unit (6) comprises a connecting seat (601) rotatably connected to the rotating rod (501), the connecting seat (601) is fixedly connected to the support frame (1), and a pushing seat (604) is arranged on the front of the connecting seat (601).

2. The method for producing and processing a waterproof HJT cell according to claim 1, characterized in that: A plurality of transmission frames (2) are fixedly mounted on the support frame (1), and a transmission belt is transmission-connected to the transmission frame (2).

3. The method for producing and processing a waterproof HJT cell according to claim 2, characterized in that: A cylinder (305) is fixedly connected to the top end surface of the support frame (1), and an output end of the cylinder (305) is fixedly connected to the connecting frame (301).

4. The method for producing and processing a waterproof HJT cell according to claim 3, characterized in that: A sliding seat (401) is installed on the placement frame (304) by means of bolts, a sliding rod (402) is slidably connected to the inner wall of the sliding seat (401), one end of the sliding rod (402) is fixedly connected to a limit block (404), a limit spring (403) is sleeved on the outer wall of the sliding rod (402), and two ends of the limit spring (403) are respectively fixedly connected to the sliding seat (401) and the limit block (404).

5. The method for producing and processing a waterproof HJT cell according to claim 4, characterized in that: A second rotating block (505) is rotatably connected to the outer wall of the placement rack (304), and the second rotating block (505) is fixedly connected to the threaded rod (502). A nut seat (503) is threadedly connected to the outer peripheral wall of the threaded rod (502), and the nut seat (503) is rotatably connected to the rotating rod (501). The end of the rotating rod (501) away from the threaded rod (502) is fixedly connected to the first rotating block (504).

6. The method for producing and processing a waterproof HJT cell according to claim 5, characterized in that: The first rotating block (504) is rotatably connected to the connecting seat (601); a screw rod (602) is slidably connected to the inner wall of the connecting seat (601); a transmission wheel (605) is threadedly connected to the outer wall of the screw rod (602); the transmission wheel (605) is rotatably connected to the connecting seat (601); a transmission belt (606) is interference-fitted on the outer walls of two corresponding transmission wheels (605); and one end of one of the transmission wheels (605) is connected to a driving mechanism.

7. The method for producing and processing a waterproof HJT cell according to claim 6, characterized in that: The end of the screw rod (602) is rotatably connected to a fixed seat (603), the inner wall of the fixed seat (603) is slidably connected to a moving rod (608), and one end of the moving rod (608) is fixedly connected to the pushing seat (604).

8. The method for producing and processing a waterproof HJT cell according to claim 7, characterized in that: A push spring (607) is sleeved on the outer peripheral wall of the moving rod (608), one end of the push spring (607) is fixedly connected to the fixed seat (603), and the other end of the push spring (607) is fixedly connected to the push seat (604).

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