Grid line manufacturing equipment

Abstract

The utility model discloses grid line manufacturing equipment, which comprises a first bin body, a second bin body, a third bin body and a fourth bin body, a first silk-screen printing mechanism is arranged in the second bin body, and the second bin body is provided with a second opening capable of being opened and closed; the grid line manufacturing equipment at least has a first state and a second state, in the first state, the first bin body and the second bin body are separated, the first opening and the second opening are closed, and each of the first bin body and the second bin body forms a sealed cavity; in the second state, the second bin body and the first bin body are in butt joint, the first opening and the second opening are opened, and the second bin body and the first bin body jointly form a sealed cavity; the first silk-screen printing mechanism can move into the first bin body from the second bin body so as to print grid lines on the battery piece precursor in the first bin body. The grid line manufacturing equipment can solve the problem that the metal slurry or the grid line manufactured by the metal slurry is easy to oxidize in the process of manufacturing the grid line by the metal slurry.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic cell technology, specifically to a grid wire manufacturing equipment. Background Technology

[0002] Screen printing silver paste to manufacture grid lines is currently the mainstream process for grid line production. However, the high price of silver cannot meet the cost reduction requirements of photovoltaic cells, and the limited production of silver restricts further expansion of photovoltaic cell production. On the other hand, copper is relatively inexpensive and has a high production volume, making the use of copper as a substitute for silver in grid line manufacturing one of the main research directions. Silver is not easily oxidized, and silver paste containing silver powder and grid lines made from silver paste are not easily oxidized. In contrast, copper is easily oxidized, and copper paste containing copper powder and grid lines made from copper paste are even more prone to oxidation. Therefore, it is not possible to directly replicate the process of screen printing silver paste to manufacture grid lines to achieve the same result as screen printing copper paste to manufacture grid lines. In summary, the primary technical problem to be solved in the process of manufacturing grid lines from copper paste is how to reduce the risk of oxidation of the copper paste or the grid lines made from it, and how to ensure that the copper paste or the grid lines made from it do not oxidize. Utility Model Content

[0003] The purpose of this invention is to provide a grid wire manufacturing device to solve the problem that metal paste or grid wires made of metal paste are easily oxidized during the grid wire manufacturing process.

[0004] To achieve the above objectives, the technical solutions provided in this utility model embodiment are as follows.

[0005] An embodiment of this utility model provides a grid wire manufacturing apparatus, comprising:

[0006] The first compartment is used to carry the battery cell precursor and has an openable and closable first opening.

[0007] The second compartment is equipped with a first screen printing mechanism and has an openable and closable second opening.

[0008] The grid wire manufacturing equipment has at least a first state and a second state.

[0009] In the first state, the first compartment and the second compartment are separated, the first opening and the second opening are closed, and the first compartment and the second compartment each form a sealed cavity;

[0010] In the second state, the second compartment and the first compartment are docked, the first opening and the second opening are open, and the second compartment and the first compartment together form a sealed cavity; the first screen printing mechanism can move from the second compartment to the first compartment to print grid lines on the battery cell precursor in the first compartment.

[0011] In some embodiments, the first compartment is provided with a first gate mechanism, the first gate mechanism including a first fixed cover plate fixedly connected to the first compartment, and a first sliding cover plate slidably connected to the first fixed cover plate, the first sliding cover plate sliding on the first fixed cover plate to form the openable and closable first opening;

[0012] And / or,

[0013] The second compartment is provided with a second gate mechanism, which includes a second fixed cover plate fixedly connected to the second compartment and a second sliding cover plate slidably connected to the second fixed cover plate. The second sliding cover plate slides on the second fixed cover plate to form the openable and closable second opening.

[0014] In some embodiments, the first screen printing mechanism includes a first lifting drive device, an installation platform is provided on the drive end of the first lifting drive device, a screen mounting arm is suspended on the installation platform, and a screen is fixedly installed on the screen mounting arm.

[0015] The installation platform is fixedly equipped with a scraper lateral movement drive device on the side facing the screen, and the drive end of the scraper lateral movement drive device is equipped with a scraper and a glue dispensing component.

[0016] In some embodiments, the grid wire manufacturing equipment further includes a third chamber, in which a curing mechanism is provided, and the third chamber has an openable and closable third opening;

[0017] The grid line manufacturing equipment also has a third state, in which the third chamber and the first chamber are docked, the first opening and the third opening are opened, and the first chamber and the third chamber together form a sealed cavity; the curing mechanism can cure the grid lines on the battery cell precursor.

[0018] The third compartment is provided with a third gate mechanism, which includes a third fixed cover plate fixedly connected to the third compartment and a third sliding cover plate slidably connected to the third fixed cover plate. The third sliding cover plate slides on the third fixed cover plate to form the openable and closable third opening.

[0019] In some embodiments, the first chamber is connected to a first gas supply device, which is used to fill the first chamber with protective gas, and the second chamber is connected to a second gas supply device, which is used to fill the second chamber with protective gas.

[0020] In the first state, the first air supply device is connected to the first chamber and can inflate the first chamber with air;

[0021] In the second state, the first gas supply device is not connected to the first chamber.

[0022] In some embodiments, the grid wire manufacturing equipment further includes a slurry supply device, which is a sealed tank having an inlet and an outlet; the slurry supply device is connected to the adhesive outlet in the first screen printing mechanism to supply metal slurry to the adhesive outlet; the slurry supply device is connected to a third gas supply device for filling the slurry supply device with protective gas.

[0023] In some embodiments, a valve is installed on the pipe connecting the third air supply device to the slurry supply device, and a sensor for detecting its internal pressure is installed on the slurry supply device; both the valve and the sensor are communicatively connected to a controller, which can control the opening of the valve according to the internal pressure of the slurry supply device fed back by the sensor, so that the internal pressure of the slurry supply device is maintained at a preset pressure value.

[0024] In some embodiments, the grid wire manufacturing equipment further includes a fourth chamber, in which a second screen printing mechanism is disposed, and the fourth chamber has an openable and closable fourth opening;

[0025] The grid line manufacturing equipment also has a fourth state in which the fourth chamber and the first chamber are docked, the first opening and the fourth opening are open, and the fourth chamber and the first chamber together form a sealed cavity; the second screen printing mechanism can move from the fourth chamber to the first chamber to print a protective layer on the grid line of the cell precursor.

[0026] In some embodiments, the grid wire manufacturing equipment has a first station and a second station.

[0027] The first compartment can be moved from the first workstation to the second workstation.

[0028] The second compartment is located at the second workstation, where the second compartment and the first compartment are connected to form a combined compartment.

[0029] In some embodiments, the grid wire manufacturing equipment has a first station, a second station, a third station, and a fourth station.

[0030] The first compartment can be moved sequentially from the first workstation to the second, third, and fourth workstations.

[0031] The second chamber is located at the second work station. At the second work station, the second chamber and the first chamber are docked to form a combined chamber, so as to print grid lines on the cell precursor in the first chamber under a protective gas atmosphere.

[0032] The third chamber is located at the third work station. At the third work station, the third chamber and the first chamber are connected to form a combined chamber to solidify the grid lines on the battery cell precursor in a protective gas atmosphere.

[0033] The fourth chamber is located at the fourth work station. At the fourth work station, the fourth chamber and the first chamber are docked to form a combined chamber, so as to print a protective layer on the grid line of the battery cell precursor in a protective gas atmosphere.

[0034] The first, second, third, and fourth compartments are all filled with protective gas.

[0035] Due to the application of the above technical solution, the grid wire manufacturing equipment in this utility model embodiment has the following advantages compared with the prior art:

[0036] In the second state, the second chamber and the first chamber are connected, and the first and second openings are open. The first and second chambers together form a sealed cavity, called the combined chamber. The combined chamber is isolated from the outside air. The combined chamber can continue to receive protective gas from the first and second chambers, or it can be refilled with protective gas. This allows the first screen printing mechanism to print grid lines on the battery cell precursor in a low-oxygen or even oxygen-free environment, preventing the exposed metal paste on the first screen printing mechanism and the uncured grid lines on the battery cell precursor from being oxidized during the screen printing process.

[0037] When the first state occurs before the second state, the first and second chambers each form a sealed cavity, sealing the battery cell precursor and the first screen printing mechanism respectively, preventing contact with the outside air.

[0038] When the first state occurs after the second state, the first chamber and the second chamber each form a sealed cavity, which respectively seals the already printed battery cell precursor and the first screen printing mechanism with exposed metal paste. The first chamber can prevent the uncured grid lines on the battery cell precursor from contacting the outside air and being oxidized, and the second chamber can prevent the exposed metal paste on the first screen printing mechanism from contacting the outside air and being oxidized. Attached Figure Description

[0039] Appendix Figure 1 This is a schematic diagram of a specific grid wire manufacturing equipment in an embodiment of the present utility model;

[0040] Appendix Figure 2 This is a schematic diagram of the workstation distribution of the grid wire manufacturing equipment in this embodiment of the present invention;

[0041] Appendix Figure 3 This is a schematic diagram of the first compartment of the first structure in the embodiment of the present utility model in the state of the first gate mechanism being open;

[0042] Appendix Figure 4 This is a schematic diagram of the first compartment of the first structure in the embodiment of the present utility model in the closed state of the first gate mechanism;

[0043] Appendix Figure 5 This is a schematic diagram of the second chamber of the first structure in the embodiment of the present utility model in the state of the second gate mechanism being open;

[0044] Appendix Figure 6 This is a schematic diagram of the first screen printing mechanism in an embodiment of the present utility model;

[0045] Appendix Figure 7 This is a schematic diagram of the initial docking of the second compartment of the first structure and the first compartment of the first structure in an embodiment of this utility model.

[0046] Appendix Figure 8 This is a schematic diagram of the screen printing process after the second chamber of the first structure and the first chamber of the first structure in the embodiment of this utility model are connected.

[0047] Appendix Figure 9 This is a schematic diagram of the first compartment of the second structure in an embodiment of this utility model;

[0048] Appendix Figure 10 This is a schematic diagram of the second compartment of the second structure in the embodiments of this utility model;

[0049] Appendix Figure 11 This is a schematic diagram showing the docking state of the second compartment of the second structure and the first compartment of the second structure in an embodiment of this utility model;

[0050] Appendix Figure 12 This is a schematic diagram showing the docking state of the second compartment of the third structure and the first compartment of the third structure in an embodiment of this utility model;

[0051] Appendix Figure 13 This is a schematic diagram showing the first gate mechanism in a closed state when the third compartment of the first structure and the first compartment of the first structure are connected in an embodiment of this utility model.

[0052] Appendix Figure 14 This is a schematic diagram showing the first gate mechanism in the open state when the third compartment of the first structure and the first compartment of the first structure are docked in an embodiment of this utility model.

[0053] Appendix Figure 15 This is a schematic diagram showing the docking state of the third compartment of the second structure and the first compartment of the first structure in an embodiment of this utility model.

[0054] The meanings of the reference numerals in the attached figures are as follows:

[0055] Battery cell precursor 1;

[0056] First compartment 20, first shell 21, bearing platform 22, first fixed cover plate 23, first gate drive device 24, first sliding cover plate 25, sealing element 26;

[0057] Second chamber 30, second shell 31, first screen printing mechanism 32, second fixed cover plate 33, second gate drive device 34, second sliding cover plate 35, first lifting drive device 321, mounting platform 322, screen mounting cantilever 323, screen 324, squeegee lateral movement drive device 325, squeegee lifting drive device 326, squeegee 327, glue dispensing part 328;

[0058] Feeding conveyor belt 41, feeding robot 42, unloading conveyor belt 44, unloading robot 43;

[0059] The third chamber 50, the third shell 51, the curing mechanism 52, the second lifting drive device 521, the curing element 522, the third fixed cover plate 53, the third gate drive device 54, and the third sliding cover plate 55.

[0060] First gas supply device 61, second gas supply device 62;

[0061] Slurry supply device 70, third air supply device 71;

[0062] Workstation 1 W1, Workstation 2 W2, Workstation 3 W3, Workstation 4 W4. Detailed Implementation

[0063] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art.

[0064] To address the problem of easy oxidation of metal paste or metal paste-made grid lines during the manufacturing process of grid lines using metal paste, this embodiment provides a grid line manufacturing apparatus. For example... Figures 3-12As shown, the grid line manufacturing equipment includes a first chamber 20 and a second chamber 30. The first chamber 20 is used to carry the battery cell precursor 1 and has an openable and closable first opening. The second chamber 30 is provided with a first screen printing mechanism 32 and has an openable and closable second opening. The first chamber 20 includes a first housing 21 with an opening on one side, and a support platform 22 is provided at the bottom of the first housing 21. The support platform 22 is used to carry the battery cell precursor 1. Preferably, the support platform 22 has an adsorption function, capable of adsorbing and fixing the battery cell precursor 1; more preferably, a breathable table paper (not shown) is provided on the support platform 22, through which the support platform 22 adsorbs the battery cell precursor 1. The table paper can prevent metal paste from contaminating the support platform 22 during the screen printing process, and the contaminated table paper can be replaced periodically. The second chamber 30 includes a second housing 31 with an opening on one side, and the first screen printing mechanism 32 is provided at the top of the second housing 31.

[0065] The grid wire manufacturing equipment has at least a first state and a second state. In the first state, the first chamber 20 and the second chamber 30 are separated, the first opening and the second opening are closed, and the first chamber 20 and the second chamber 30 each form a sealed cavity. In the second state, as... Figure 8 As shown, the second chamber 30 and the first chamber 20 are connected, the first opening and the second opening are opened, and the second chamber 30 and the first chamber 20 together form a sealed cavity; the first screen printing mechanism 32 can move from the second chamber 30 into the first chamber 20 to print grid lines on the battery cell precursor 1 in the first chamber 20.

[0066] The first state occurs before and / or after the second state. Before the second state, the first chamber 20 and the second chamber 30 each form a sealed cavity, respectively sealing the battery cell precursor 1 and the first screen printing mechanism 32 to prevent contact with outside air. This is generally done to create a low-oxygen or even oxygen-free environment in the first chamber 20 and the second chamber 30, for example, by filling the first chamber 20 and the second chamber 30 with a protective gas. This protective gas can be nitrogen, helium, neon, argon, krypton, xenon, or radon, or air after oxygen separation. In the second state, it is not necessary to replenish the first chamber 20 and / or the second chamber 30 with protective gas, although it is also permissible to replenish it again. The first state occurs after the second state. The first chamber 20 and the second chamber 30 each form a sealed cavity, respectively sealing the already printed battery cell precursor 1 and the first screen printing mechanism 32 exposing the metal paste. The first chamber 20 prevents the uncured grid lines on the battery cell precursor 1 from contacting outside air and being oxidized, while the second chamber 30 prevents the exposed metal paste on the first screen printing mechanism 32 from contacting outside air and being oxidized. The metal paste contains easily oxidized metals, such as copper; the copper-containing metal paste is called copper paste. The copper paste is printed by the first screen printing mechanism 32 to form copper grid lines.

[0067] In the second state, the second chamber 30 and the first chamber 20 are connected, and the first opening and the second opening are open. The first chamber 20 and the second chamber 30 together form a sealed cavity, called the combined chamber. The combined chamber is isolated from the outside air. The combined chamber can continue to receive the protective gas from the first chamber 20 and the second chamber 30, or the combined chamber can be refilled with protective gas. This allows the first screen printing mechanism 32 to print grid lines on the battery cell precursor 1 in a low-oxygen or even oxygen-free environment, preventing the exposed metal paste on the first screen printing mechanism 32 and the uncured grid lines on the battery cell precursor 1 from being oxidized during the screen printing process.

[0068] Specifically, the first state occurs before and after the second state. The first chamber 20 and the second chamber 30 separate; the first opening of the first chamber 20 opens, and the battery cell precursor 1 is placed into the first chamber 20; the first opening closes, and the first chamber 20 forms a sealed cavity, into which protective gas is filled; the second opening closes, and the second chamber 30 forms a sealed cavity, into which protective gas is filled. One end of the opening of the first chamber 20 and one end of the opening of the second chamber 30 are joined together; the first and second openings open, and the second chamber 30 and the first chamber 20 together form a sealed cavity; the first screen printing mechanism 32 moves from the second chamber 30 into the first chamber 20 to print grid lines on the battery cell precursor 1 in the first chamber 20. After the grid printing is completed, the first screen printing mechanism 32 returns from the second chamber 30 to the first chamber 20, the first opening and the second opening close again, the first chamber 20 and the second chamber 30 each form a sealed cavity, and the first chamber 20 and the second chamber 30 separate again.

[0069] It should be noted that the cell precursor 1 is a semi-finished cell. In the continuous process of manufacturing cells, the cell precursor 1 is the product of the previous process stage, and the current process stage needs to further process the cell precursor 1.

[0070] In some embodiments, a first gate mechanism is provided in the first compartment 20 and / or a second gate mechanism is provided in the second compartment 30. For example... Figures 3-12 As shown, the first gate mechanism includes a first fixed cover plate 23 fixedly connected to the first chamber 20, and a first sliding cover plate 25 slidably connected to the first fixed cover plate 23. The first sliding cover plate 25 slides on the first fixed cover plate 23 to form an openable and closable first opening. The second gate mechanism includes a second fixed cover plate 33 fixedly connected to the second chamber 30, and a second sliding cover plate 35 slidably connected to the second fixed cover plate 33. The second sliding cover plate 35 slides on the second fixed cover plate 33 to form an openable and closable second opening.

[0071] Specifically, a first fixed cover plate 23 is fixedly disposed on the inner wall of the first compartment 20. The first fixed cover plate 23 is connected to the three inner walls of the first compartment 20. Two first fixed cover plates 23 are arranged opposite to each other and spaced apart, with the gap between the two first fixed cover plates 23 forming a first opening. Each first fixed cover plate 23 is provided with a first gate driving device 24 and a first sliding cover plate 25. The first gate driving device 24 drives the first sliding cover plate 25 to slide on the first fixed cover plate 23, so that the first sliding cover plates 25 on the two first fixed cover plates 23 can approach each other until they contact each other to close the first opening, and so that the first sliding cover plates 25 on the two first fixed cover plates 23 can move away from each other to open the first opening, thereby forming an openable and closable first opening. In one embodiment, as... Figures 3-4 As shown, the first fixed cover plate 23 is located in the middle of the first compartment 20, dividing the first compartment 20 into two cavities. The lower cavity can form a sealed cavity, and the upper cavity is used for docking with the second compartment 30. In another embodiment, as... Figure 9 As shown, the first fixed cover plate 23 is flush with the top edge of the first compartment 20, and the first compartment 20 can be regarded as a cavity; when the second compartment 30 and the first compartment 20 are connected, the first fixed cover plate 23 abuts against the second compartment 30.

[0072] Specifically, the second fixed cover plate 33 is fixedly disposed on the inner wall of the second compartment 30. The second fixed cover plate 33 is connected to the three inner walls of the second compartment 30. There are two second fixed cover plates 33 arranged opposite to each other and spaced apart, and the gap between the two second fixed cover plates 33 forms a second opening. Each second fixed cover plate 33 is provided with a second gate driving device 34 and a second sliding cover plate 35. The second gate driving device 34 drives the second sliding cover plate 35 to slide on the second fixed cover plate 33, so that the second sliding cover plates 35 on the two second fixed cover plates 33 can approach each other until they contact each other to close the second opening, and so that the second sliding cover plates 35 on the two second fixed cover plates 33 can move away from each other to open the second opening, thereby forming an openable and closable second opening. In one embodiment, such as Figure 5As shown, the second fixed cover plate 33 is located in the middle of the second chamber 30, dividing the second chamber 30 into two cavities. The upper cavity forms a sealed cavity, and the lower cavity is used to dock with the first chamber 20. When the second chamber 30 docks with the first chamber 20, a temporary chamber is formed between the first gate mechanism and the second gate mechanism. Protective gas enters the temporary chamber from the first chamber 20 and the second chamber 30 respectively, causing the concentration of protective gas in the first chamber 20 and the second chamber 30 to be diluted and reduced. This results in the need to frequently replenish the protective gas in the first chamber 20 and the second chamber 30 during subsequent production processes, affecting production efficiency. When the first chamber 20 and the second chamber 30 separate, the temporary chamber opens, and the protective gas leaks out, resulting in waste of the protective gas. In another embodiment, as... Figure 10 As shown, the second fixed cover plate 33 is flush with the bottom edge of the second chamber 30, and the second chamber 30 can be considered as a cavity; simultaneously, the first fixed cover plate 23 is flush with the top edge of the first chamber 20, and the first chamber 20 can be considered as a cavity; when the second chamber 30 and the first chamber 20 are connected, the second fixed cover plate 33 abuts against the first fixed cover plate 23 on the first chamber 20. No temporary chamber is formed between the first gate mechanism and the second gate mechanism; only a temporary gap is formed between the first sliding cover plate 25 and the second sliding cover plate 35. A small amount of protective gas will be temporarily stored in the temporary gap, and the loss of protective gas is relatively small when the first chamber 20 and the second chamber 30 are separated. In addition, a sealing element 26 needs to be provided at the connection between the second chamber 30 and the first chamber 20 to reduce or avoid leakage of protective gas in the combined chamber. In this embodiment, the sealing element 26 is disposed on the side of the first fixed cover plate 23 that abuts against the second fixed cover plate 33, and / or the sealing element 26 is disposed on the side of the second fixed cover plate 33 that abuts against the first fixed cover plate 23, which facilitates the installation of the sealing element 26 and increases the coverage area of ​​the sealing element 26, thereby improving the sealing effect.

[0073] In some implementations, such as Figure 6 As shown, the first screen printing mechanism 32 includes a first lifting drive device 321. A mounting platform 322 is provided on the drive end of the first lifting drive device 321. A screen mounting cantilever 323 is suspended on the mounting platform 322, and a screen 324 is fixedly mounted on the screen mounting cantilever 323. A squeegee traverse drive device 325 is fixedly mounted on the side of the mounting platform 322 facing the screen 324. A squeegee 327 and a glue dispensing component 328 are provided on the drive end of the squeegee traverse drive device 325.

[0074] Preferably, the squeegee 327 is connected to the squeegee lateral movement drive 325 via a squeegee lifting drive 326. The squeegee lifting drive 326 drives the squeegee 327 to move closer to or further away from the screen 324, and the squeegee lateral movement drive 325 drives the squeegee 327 to move laterally, printing the metal paste on the screen 324 onto the battery cell precursor 1. More preferably, the first screen printing mechanism 32 also includes a back-ink blade (not shown). The back-ink blade and the squeegee 327 are disposed on opposite sides of the adhesive dispensing member 328. After the squeegee 327 prints the metal paste on the screen 324 onto the battery cell precursor 1, the back-ink blade squeezes the screen 324 to smooth the metal paste on the battery cell precursor 1. The squeegee 327 and the back-ink blade work alternately. The back-ink blade also has a lifting function to avoid interfering with the operation of the squeegee 327.

[0075] In some implementations, such as Figures 13-15 As shown, the grid line manufacturing equipment also includes a third chamber 50, in which a curing mechanism 52 is provided. The third chamber 50 has an openable and closable third opening. The grid line manufacturing equipment also has a third state in which the third chamber 50 is docked with the first chamber 20, the first opening and the third opening are open, and the first chamber 20 and the third chamber 50 together form a sealed cavity; the curing mechanism 52 can cure the grid lines on the cell precursor 1.

[0076] The third compartment 50 is provided with a third gate mechanism, which includes a third fixed cover plate 53 fixedly connected to the third compartment 50 and a third sliding cover plate 55 slidably connected to the third fixed cover plate 53. The third sliding cover plate 55 slides on the third fixed cover plate 53 to form an openable and closable third opening.

[0077] Specifically, a third fixed cover plate 53 is fixedly installed on the inner wall of the third compartment 50. The third fixed cover plate 53 is connected to the three inner walls of the third compartment 50. There are two third fixed cover plates 53 arranged opposite each other and spaced apart. The gap between the two third fixed cover plates 53 forms a third opening. Each third fixed cover plate 53 is provided with a third gate driving device 54 and a third sliding cover plate 55. The third gate driving device 54 drives the third sliding cover plate 55 to slide on the third fixed cover plate 53, so that the third sliding cover plates 55 on the two third fixed cover plates 53 can approach each other until they contact each other to close the third opening, and so that the third sliding cover plates 55 on the two third fixed cover plates 53 can move away from each other to open the third opening, thereby forming an openable and closable third opening.

[0078] Specifically, the third state occurs after the second state. The cell precursor 1 completes grid line printing in the second state and curing of the grid lines in the third state. The third chamber 50 can be without an openable / closable third opening, only a fixed third opening; that is, the third chamber 50 does not have a third gate mechanism, which simplifies its structure. However, if the third chamber 50 does not have a third gate mechanism, protective gas will not be pre-filled into it. After the first chamber 20 and the third chamber 50 together form a sealed cavity, the protective gas in the first chamber 20 will enter the third chamber 50, reducing the concentration of protective gas in the first chamber 20. This necessitates frequent replenishment of protective gas to the first chamber 20 during subsequent production, affecting production efficiency. Therefore, the third chamber 50 is equipped with a third gate mechanism, allowing it to form a sealed cavity independently. By pre-filling the third chamber 50 with protective gas, when the first chamber 20 and the third chamber 50 together form a sealed cavity, the concentration of protective gas in the first chamber 20 will not be diluted or reduced, which can reduce the frequency of replenishing protective gas in the first chamber 20 and improve the efficiency of screen printing.

[0079] Specifically, the third chamber 50 includes a third housing 51, which covers the first chamber 20 during operation. A curing mechanism 52 is provided on the inner top wall of the third housing 51. Preferably, the curing mechanism 52 includes a second lifting drive device 521 and a curing element 522 connected to the drive end of the second lifting drive device. The second lifting drive device 521 can drive the curing element 522 to rise and fall, allowing the curing element 522 to approach the cell precursor 1 to cure the grid lines. Especially when the curing element 522 is an eddy current (electromagnetic) dryer or a photocuring mechanism, its proximity to the cell precursor 1 allows for more efficient curing of the grid lines. When the curing element 522 is an electric heater, it can heat the cell precursor 1 or the air surrounding it, thereby curing the grid lines.

[0080] In a modified implementation, after the cell precursor 1 completes grid line printing, the first chamber 20 enters a sealed transfer station. The sealed transfer station and a sealed tunnel furnace are connected by an openable and closable protective door. In the sealed transfer station, the cell precursor 1 separates from the first chamber 20, and the cell precursor 1 enters the sealed tunnel furnace through the protective door for curing. The sealed tunnel furnace is filled with a protective gas.

[0081] In some implementations, such as Figure 12 As shown, the first chamber 20 is connected to the first gas supply device 61, which is used to fill the first chamber 20 with protective gas. The second chamber 30 is connected to the second gas supply device 62, which is used to fill the second chamber 30 with protective gas.

[0082] Specifically, in the first state, the first air supply device 61 is connected to the first chamber 20 and can inflate the first chamber 20; in the second state, the first air supply device 61 is not connected to the first chamber 20. Since the first chamber 20 is in a mobile state, inflating it at each workstation would affect production efficiency. Inflating the first chamber 20 at a fixed workstation eliminates the need for inflating it at every workstation, thus improving production efficiency.

[0083] In some embodiments, the grid wire manufacturing equipment further includes a slurry supply device 70, which is a sealed tank having an inlet and an outlet; the slurry supply device 70 is connected to the adhesive outlet 328 in the first screen printing mechanism 32 to supply metal slurry to the adhesive outlet 328; the slurry supply device 70 is connected to a third gas supply device 71, which is used to fill the slurry supply device 70 with protective gas.

[0084] Specifically, metal paste is added to the paste supply device 70 through its inlet, or metal powder and liquid solvent are added to the paste supply device 70 through its inlet, and mixed in the paste supply device 70 to form a metal paste. The outlet of the paste supply device 70 is connected to the adhesive dispensing component 328 in the first screen printing mechanism 32 via a pipe. Both the inlet and outlet of the paste supply device 70 can be opened and closed using valves.

[0085] In operation, the third gas supply device 71 introduces protective gas into the slurry supply device 70, so that the metal slurry in the slurry supply device 70 is in a protective gas environment and is not easily oxidized.

[0086] In some embodiments, a valve is installed on the pipeline connecting the third air supply device 71 to the slurry supply device 70, and a sensor for detecting its internal pressure is installed on the slurry supply device 70; both the valve and the sensor are communicatively connected to a controller, which can control the opening of the valve according to the internal pressure of the slurry supply device 70 fed back by the sensor, so that the internal pressure of the slurry supply device 70 is maintained at a preset pressure value, thereby enabling the metal slurry in the slurry supply device 70 to flow out stably from the outlet of the slurry supply device 70 under the action of the preset pressure.

[0087] In some embodiments, the grid line manufacturing equipment further includes a fourth chamber housing a second screen printing mechanism. The fourth chamber has an openable and closable fourth opening. The grid line manufacturing equipment also has a fourth state in which the fourth chamber is docked with the first chamber 20, the first and fourth openings are open, and the fourth chamber and the first chamber 20 together form a sealed cavity. The second screen printing mechanism can move from the fourth chamber into the first chamber 20 to print a protective layer on the grid lines of the cell precursor 1.

[0088] It should be noted that the structure of the fourth chamber can refer to the structure of the second chamber 30; the cooperation between the fourth chamber and the first chamber 20 can refer to the cooperation between the second chamber 30 and the first chamber 20. Preferably, the protective layer is a silver layer, and the printing material of the second screen printing mechanism is silver paste.

[0089] The grid lines printed by the first screen printing mechanism 32 on the cell precursor 1 are in an uncured state. The uncured grid lines are directly exposed to air and are easily oxidized. Therefore, the uncured grid lines are cured in a protective gas atmosphere (third state), and the cured grid lines are not easily oxidized. However, the surface of the cured grid lines will still be oxidized to a small extent. In order to further reduce the risk of grid line oxidation, a protective layer is formed on the surface of the grid lines in a protective gas atmosphere (fourth state).

[0090] In a modified implementation, after the protective layer printing is completed on the cell precursor 1, the first chamber 20 enters the sealed transfer station. The sealed transfer station and the sealed tunnel furnace are connected by an openable and closable protective door. In the sealed transfer station, the cell precursor 1 separates from the first chamber 20, and the cell precursor 1 enters the sealed tunnel furnace through the protective door for curing. The sealed tunnel furnace is filled with a protective gas.

[0091] In some implementations, such as Figure 2 As shown, the grid wire manufacturing equipment has a first station W1 and a second station W2. The first chamber 20 can move from the first station W1 to the second station W2. The second chamber 30 is located at the second station W2. At the second station W2, the second chamber 30 and the first chamber 20 are docked to form a combined chamber.

[0092] Specifically, the first chamber 20 is similar to a carrier for the cell precursor 1. At the first station W1, the cell precursor 1 is placed into the first chamber 20. The first chamber 20 carrying the cell precursor 1 is transported to the second station W2, where the second chamber 30 and the first chamber 20 are joined to form a combined chamber. Under a protective gas atmosphere, grid lines are printed on the cell precursor 1 in the first chamber 20. After the grid line printing is completed, the first chamber 20 and the second chamber 30 are separated again. Preferably, the grid line manufacturing equipment also has a third station W3. At the third station W3, the third chamber 50 and the first chamber 20 are joined to form a combined chamber, and under a protective gas atmosphere, the grid lines on the cell precursor 1 are cured. Preferably, the grid line manufacturing equipment also has a fourth station W4. At the fourth station W4, the fourth chamber and the first chamber 20 are joined to form a combined chamber, and under a protective gas atmosphere, a protective layer is printed on the grid lines of the cell precursor 1. Therefore, the printing, curing, and protective layer printing processes of the grid lines can be carried out in different combined chambers, minimizing the probability of the grid lines coming into contact with air and reducing the risk of oxidation. Specifically, the first chamber 20, the second chamber 30, the third chamber 50, and the fourth chamber are all pre-filled with protective gas.

[0093] More specifically, the first station W1 and the second station W2 are located on the moving path of the turntable 10. The turntable 10 is equipped with a first chamber 20, which moves to the first station W1 and the second station W2 to complete the corresponding process operations. Preferably, the first station W1, the second station W2, the third station W3, and the fourth station W4 are located on the moving path of the turntable 10, which moves the first chamber 20 to these four stations to complete the corresponding process operations. These process operations include a feeding process, a grid line printing process, a grid line curing process, a protective layer printing process, and a unloading process. Multiple process operations may be completed at one station. Alternatively, the aforementioned stations can be located on the conveying path of a linear conveyor mechanism, which sequentially conveys the first chamber 20 to each station. The linear conveyor mechanism can be a chain conveyor mechanism. The turntable 10 includes a rotating shaft 11, which is driven by a motor to rotate, thereby causing the turntable 10 to rotate.

[0094] More specifically, the bottom of the first compartment 20 is provided with a plug-in post, and the turntable 10 is provided with a plug hole that mates with the plug-in post. The plug-in post is inserted into the plug hole to connect the first compartment 20 and the turntable 10. When the battery cell precursor 1 is unloaded from the turntable 10, the first compartment 20 carries the battery cell precursor 1 and is unloaded together. The plug-in post is pulled out of the plug hole, and the first compartment 20 is disconnected from the turntable 10. In a modified embodiment, the bottom of the first compartment 20 is provided with a plug hole, and the turntable 10 is provided with a plug-in post that mates with the plug hole. The plug-in post is inserted into the plug hole to connect the first compartment 20 and the turntable 10. Through plugging, the first compartment 20 and the turntable 10 can be quickly connected and disconnected. Alternatively, the first compartment 20 can be fixed to the turntable 10 with screws, so that only the battery cell precursor 1 is unloaded when the battery cell precursor 1 is unloaded from the turntable 10.

[0095] In some implementations, such as Figure 1-2 As shown, the grid line manufacturing equipment also includes a feeding conveyor belt 41 and a feeding robot 42. The feeding conveyor belt 41 transports the cell precursor 1 to the vicinity of the first station W1. The feeding robot 42 picks up the cell precursor 1 from the feeding conveyor belt 41 and transfers it to the first compartment 20 at the first station W1. The grid line manufacturing equipment also includes an unloading conveyor belt 44 and an unloading robot 43. The unloading conveyor belt 44 is located near the unloading station. The unloading robot 43 picks up the cell precursor 1 from the unloading station and transfers it to the unloading conveyor belt 44. The unloading conveyor belt 44 transports the cell precursor 1 to the subsequent process section. The unloading station can be the aforementioned second station W2, third station W3, or fourth station W4, or a single station. Preferably, there are two first compartments 20 arranged side by side, or the first compartment 20 can hold two cell precursors 1, thereby enabling simultaneous processing of two cell precursors 1 to improve production efficiency.

[0096] In another embodiment, a protective gas can be provided in the cell manufacturing equipment or photovoltaic module manufacturing equipment to prevent oxidation of the cell precursor 1 or the grid lines on the cell surface. For example, a protective gas can be provided in the cell stringing equipment so that multiple cells are stringed together in a protective gas atmosphere to form a cell string, which can prevent oxidation of the grid lines on the cells, especially if the grid lines are copper grid lines or composite grid lines containing copper grid lines.

[0097] It should be noted that the terms "top," "bottom," etc., mentioned in this application are determined based on the working state of the object. The various driving devices mentioned in this application can be configured as motors or cylinders as needed.

[0098] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A grid wire manufacturing device, characterized in that, include: The first compartment is used to carry the battery cell precursor and has an openable and closable first opening. The second compartment is equipped with a first screen printing mechanism and has an openable and closable second opening. The grid wire manufacturing equipment has at least a first state and a second state. In the first state, the first compartment and the second compartment are separated, the first opening and the second opening are closed, and the first compartment and the second compartment each form a sealed cavity; In the second state, the second compartment is docked with the first compartment, the first opening and the second opening are open, and the second compartment and the first compartment together form a sealed cavity; The first screen printing mechanism can move from the second chamber to the first chamber to print grid lines on the battery cell precursor in the first chamber.

2. The grid wire manufacturing equipment according to claim 1, characterized in that: The first compartment is provided with a first gate mechanism, which includes a first fixed cover plate fixedly connected to the first compartment and a first sliding cover plate slidably connected to the first fixed cover plate. The first sliding cover plate slides on the first fixed cover plate to form the first openable and closable opening. And / or, The second compartment is provided with a second gate mechanism, which includes a second fixed cover plate fixedly connected to the second compartment and a second sliding cover plate slidably connected to the second fixed cover plate. The second sliding cover plate slides on the second fixed cover plate to form the openable and closable second opening.

3. The grid wire manufacturing equipment according to claim 1, characterized in that: The first screen printing mechanism includes a first lifting drive device, an installation platform is provided on the drive end of the first lifting drive device, a screen mounting arm is suspended on the installation platform, and a screen is fixedly installed on the screen mounting arm. The installation platform is fixedly equipped with a scraper lateral movement drive device on the side facing the screen, and the drive end of the scraper lateral movement drive device is equipped with a scraper and a glue dispensing component.

4. The grid wire manufacturing equipment according to claim 1, characterized in that: The grid wire manufacturing equipment also includes a third chamber, in which a curing mechanism is provided, and the third chamber has an openable and closable third opening; The grid wire manufacturing equipment also has a third state in which the third chamber is docked with the first chamber, the first opening and the third opening are open, and the first chamber and the third chamber together form a sealed cavity. The curing mechanism can cure the grid lines on the battery cell precursor; The third compartment is provided with a third gate mechanism, which includes a third fixed cover plate fixedly connected to the third compartment and a third sliding cover plate slidably connected to the third fixed cover plate. The third sliding cover plate slides on the third fixed cover plate to form the openable and closable third opening.

5. The grid wire manufacturing equipment according to claim 1, characterized in that: The first chamber is connected to a first gas supply device, which is used to fill the first chamber with protective gas. The second chamber is connected to a second gas supply device, which is used to fill the second chamber with protective gas. In the first state, the first air supply device is connected to the first chamber and can inflate the first chamber with air; In the second state, the first gas supply device is not connected to the first chamber.

6. The grid wire manufacturing equipment according to claim 1, characterized in that: The grid wire manufacturing equipment also includes a slurry supply device, which is a sealed tank with an inlet and an outlet; the slurry supply device is connected to the glue dispensing component in the first screen printing mechanism to supply metal slurry to the glue dispensing component; the slurry supply device is connected to a third gas supply device, which is used to fill the slurry supply device with protective gas.

7. The grid wire manufacturing equipment according to claim 6, characterized in that: A valve is installed on the pipeline connecting the third air supply device to the slurry supply device, and a sensor is installed on the slurry supply device to detect its internal pressure. Both the valve and the sensor are communicatively connected to a controller, which can control the opening of the valve according to the internal pressure of the slurry supply device fed back by the sensor, so that the internal pressure of the slurry supply device is maintained at a preset pressure value.

8. The grid wire manufacturing equipment according to claim 4, characterized in that: The grid wire manufacturing equipment also includes a fourth chamber, in which a second screen printing mechanism is provided, and the fourth chamber has an openable and closable fourth opening; The grid wire manufacturing equipment also has a fourth state, in which the fourth chamber and the first chamber are docked, the first opening and the fourth opening are opened, and the fourth chamber and the first chamber together form a sealed cavity; The second screen printing mechanism can move from the fourth chamber to the first chamber to print a protective layer on the grid lines of the cell precursor.

9. The grid wire manufacturing equipment according to claim 1, characterized in that: The grid wire manufacturing equipment has a first station and a second station. The first compartment can be moved from the first workstation to the second workstation. The second compartment is located at the second workstation, where the second compartment and the first compartment are connected to form a combined compartment.

10. The grid wire manufacturing equipment according to claim 8, characterized in that: The grid wire manufacturing equipment has a first station, a second station, a third station, and a fourth station. The first compartment can be moved sequentially from the first workstation to the second, third, and fourth workstations. The second chamber is located at the second work station. At the second work station, the second chamber and the first chamber are docked to form a combined chamber, so as to print grid lines on the cell precursor in the first chamber under a protective gas atmosphere. The third chamber is located at the third work station. At the third work station, the third chamber and the first chamber are connected to form a combined chamber to solidify the grid lines on the battery cell precursor in a protective gas atmosphere. The fourth chamber is located at the fourth work station. At the fourth work station, the fourth chamber and the first chamber are docked to form a combined chamber, so as to print a protective layer on the grid line of the battery cell precursor in a protective gas atmosphere. The first, second, third, and fourth compartments are all filled with protective gas.

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