Battery piece printing device and battery piece printing equipment

Abstract

The utility model provides a battery piece printing device and battery piece printing equipment. The battery piece printing device comprises a printing mechanism, a mounting base, at least one printing table mounted on the mounting base and driving mechanisms in one-to-one correspondence with the printing tables. The driving mechanism drives the corresponding printing table to move to the printing station. The printing table comprises a carrying table and at least two ink pads arranged on the carrying table, each ink pad is used for carrying one battery piece, at least one ink pad is provided with an independent three-axis alignment platform, and the three-axis alignment platform is configured to carry out horizontal position adjustment on the ink pads. And the printing mechanism is configured to synchronously print the at least two battery pieces on the printing table moved to the printing station. According to the invention, at least two battery pieces can be printed synchronously, so that the printing efficiency is improved. The printing table can adjust the position of at least one battery piece on the printing table, so that the relative position of each battery piece on the printing table meets the printing requirement.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic cell module production equipment, and specifically to a cell printing device and a cell printing equipment. Background Art

[0002] During the production process of cell modules, there is a process of using a screen printer to print special materials on the surface of cells. For example, a screen printer is used to print conductive materials on the surface of cells to form grid lines for collecting current. Also, for example, a screen printer is used to print conductive adhesive on the surface of cells.

[0003] In order to improve the operation efficiency of the entire printing line, the printing table can simultaneously move two cells to be printed carried thereon to the printing station. The positions of the two cells to be printed placed on the printing table are relatively fixed. When adjusting the angle of the printing table to adjust the position of the carried cells, only the position accuracy of one cell can be satisfied. Therefore, the existing method is to set a first printing mechanism at the first printing station and a second printing mechanism at the second printing station. The printing table adjusts its angle at the first printing station to make one of the cells carried thereon satisfy the position accuracy, and the first printing mechanism prints the cell that satisfies the position accuracy; then, the printing table moves to the second printing station, and the printing table adjusts its angle at the second printing station to make the other cell carried thereon satisfy the position accuracy, and the second printing mechanism prints the other cell that satisfies the position accuracy.

[0004] Obviously, this existing printing method requires two printing mechanisms to be configured, resulting in a high cost; and printing two cells requires two printing processes, and the printing efficiency is also low. Summary of the Utility Model

[0005] In order to solve the above technical problems, the present application provides a cell printing device, which adopts the following technical solutions:

[0006] A cell printing device includes a printing mechanism, a mounting base, at least one printing table mounted on the mounting base, and a driving mechanism corresponding to each printing table, wherein:

[0007] The driving end of the driving mechanism is in transmission connection with the corresponding printing table, and a printing station is provided on the mounting base. The driving mechanism is configured to drive the corresponding printing table to move to the printing station;

[0008] The printing table includes a carrier table and at least two printing platforms provided on the carrier table. Each printing platform is used to carry one cell, and at least one printing platform is provided with an independent three-axis alignment platform, and the three-axis alignment platform is configured to perform horizontal position adjustment on the printing platform;

[0009] The printing mechanism is located at the printing station, and the printing mechanism is configured to simultaneously print at least two cells on the printing table that moves to the printing station.

[0010] The cell printing device in the embodiments of the present application can synchronously print at least two cells, thereby improving the printing efficiency of the cells. In particular, the printing table can adjust the positions of at least one cell thereon, so that the relative positions of the cells thereon meet the printing requirements, and finally ensure that the printing quality of each cell meets the requirements.

[0011] In some embodiments, at least two printing tables include a first printing table and a second printing table, where: the first printing table is fixedly arranged on the carrier; a three-axis alignment platform is arranged on the carrier, and the second printing table is connected to the moving part of the three-axis alignment platform. The three-axis alignment platform is configured to drive the second printing table to translate and rotate on the horizontal plane to adjust the position of the cell located on the second printing table.

[0012] Two printing tables are arranged on the printing table, so that the printing mechanism can simultaneously print two cells, and the relative positions of the two cells meet the printing requirements, and finally ensure the printing quality of the two cells.

[0013] In some embodiments, adsorption holes for adsorbing cells are arranged on the bearing surfaces of the first printing table and the second printing table.

[0014] The first printing table and the second printing table respectively adsorb the cells through the adsorption holes on their bearing surfaces to prevent the cells from sliding during the printing process and affecting the printing quality.

[0015] In some embodiments, the driving mechanism includes a translation driving part and a lifting driving part. Among them, the translation driving part is connected to the mounting seat, the lifting driving part is connected to the moving part of the translation driving part, and the first end of the carrier is connected to the moving part of the lifting driving part; the translation driving part is configured to drive the carrier to translate, and the lifting driving part is configured to drive the carrier to lift.

[0016] Through the cooperation of the translation driving part and the lifting driving part, the driving mechanism realizes the driving of the carrier to translate and lift.

[0017] In some embodiments, the three-axis alignment platform is arranged near the first end of the carrier.

[0018] The overall weight of the three-axis alignment platform and the printing table connected thereto is greater than the weight of the printing table without the three-axis alignment platform. Arranging the three-axis alignment platform and the printing table connected thereto near the first end of the carrier (i.e., near the driving mechanism) can make the center of gravity of the printing table close to the driving mechanism, thereby improving the driving stability of the driving mechanism for the printing table and preventing the printing table from deforming and dropping.

[0019] In some embodiments, the printing platforms are provided in 2n numbers, where n printing platforms are installed on the first side wall of the mounting base through corresponding driving mechanisms, and the other n printing platforms are installed on the second side wall of the mounting base opposite to the first side wall through corresponding driving mechanisms, and n is 1 or 2.

[0020] Two or four printing platforms alternately drive the battery wafers to the printing station for printing, further improving the printing efficiency. In addition, equal numbers of printing platforms are installed on the first side wall and the second side wall of the mounting base, which can improve the support stability of the mounting base for the printing platforms and balance the weight.

[0021] In some embodiments, the printing mechanism includes a mounting frame, a moving module, a screen printing plate assembly and a printing assembly, wherein: the moving module is arranged on the mounting frame, the printing assembly is slidably connected to the mounting frame and connected to the moving part of the moving module; the screen printing plate assembly is arranged on the mounting frame and located below the printing assembly; the moving module is configured to drive the printing assembly abutting against the screen printing plate assembly to reciprocally translate along the screen printing plate assembly, so that the printing paste passes through the screen printing plate assembly and is printed on the battery wafer located at the printing station.

[0022] Through the cooperation of the moving module, the screen printing plate assembly and the printing assembly, the printing mechanism realizes the squeegee printing of the battery wafer.

[0023] In some embodiments, the screen printing plate assembly includes a screen printing plate mounting frame, a screen printing plate and a screen printing plate adjusting member, wherein: the screen printing plate mounting frame and the screen printing plate adjusting member are both installed on the mounting frame, and the screen printing plate mounting frame is in transmission connection with the screen printing plate adjusting member; the screen printing plate is detachably installed on the screen printing plate mounting frame, and a first printing area and a second printing area are arranged side by side on the screen printing plate; the screen printing plate adjusting member is configured to drive the screen printing plate mounting frame to translate and rotate on the horizontal plane, so that one of the first printing area and the second printing area of the screen printing plate is adapted to the position of the battery wafer located on the first printing platform, and the three-axis alignment platform is configured to perform position adjustment on the second printing platform, so that the other of the first printing area and the second printing area is adapted to the position of the battery wafer located on the second printing platform.

[0024] By arranging the screen printing plate assembly, the automatic adjustment of the position and angle of the screen printing plate is realized, so that one of the first printing area and the second printing area of the screen printing plate can be aligned with the position of the battery wafer located on the first printing platform, improving the printing effect.

[0025] In some embodiments, the solar cell printing device further includes a positioning camera configured to position the solar cells located on the first printing table and the solar cells located on the second printing table; the screen regulating member drives the screen mounting bracket to translate and rotate on a horizontal plane based on the position information of the solar cells located on the first printing table, so that one of the first printing area and the second printing area of the screen is adapted to the position of the solar cells located on the first printing table; the three-axis alignment platform is configured to adjust the position of the second printing table based on the position information of the solar cells located on the second printing table, so that the other of the first printing area and the second printing area is adapted to the position of the solar cells located on the second printing table.

[0026] By providing the positioning camera, the positioning of the solar cells located on the first printing table and the solar cells located on the second printing table is achieved, so that the screen regulating member and the three-axis alignment platform can respectively adjust the positions of the screen and the second printing table based on the position information of the solar cells located on the first printing table and the position information of the solar cells located on the second printing table, and finally one of the first printing area and the second printing area of the screen is adapted to the position of the solar cells located on the first printing table, and the other of the first printing area and the second printing area of the screen is adapted to the position of the solar cells located on the second printing table.

[0027] In some embodiments, the printing assembly includes a mounting plate, a first lifting part, a second lifting part, a voice coil motor, a squeegee module and an ink return knife module, wherein: the first lifting part and the second lifting part are arranged side by side on the mounting plate, and the mounting plate is slidably connected to the mounting bracket; the voice coil motor is connected to the movable part of the first lifting part, the squeegee module is connected to the driving end of the voice coil motor, the first lifting part is configured to drive the squeegee module to lift, when the squeegee module descends to the low position, it contacts the screen assembly, and the voice coil motor is configured to press the squeegee module against the screen assembly with a constant pressure; the ink return knife module is connected to the movable part of the second lifting part, and the second lifting part is configured to drive the ink return knife module to lift, and when the ink return knife module descends to the low position, it approaches the screen assembly.

[0028] The first lifting part for driving the squeegee module to lift is connected to the squeegee module via a voice coil motor. When the first lifting part drives the squeegee module to descend so that the squeegee module contacts the screen assembly, the voice coil motor elastically presses the squeegee module against the screen with a constant pressure, thereby ensuring that the squeegee module can print the printing paste onto the solar cells with a constant scraping force, improving the printing consistency.

[0029] In some embodiments, the three-axis alignment platform includes a base, an X-axis moving member, a Y-axis moving member, and a T-axis rotating member, where: The X-axis moving member is slidably connected to the base. A first stator is provided on one of the base and the X-axis moving member, and a first mover that is matched with the first stator is provided on the other of the base and the X-axis moving member. The first mover and the first stator cooperate to drive the X-axis moving member to slide on the base along the X-axis direction; The Y-axis moving member is slidably connected to the X-axis moving member. A second stator is provided on one of the X-axis moving member and the Y-axis moving member, and a second mover that is matched with the second stator is provided on the other of the X-axis moving member and the Y-axis moving member. The second mover and the second stator cooperate to drive the Y-axis moving member to slide on the X-axis moving member along the Y-axis direction; The T-axis rotating member is rotatably connected to the Y-axis moving member. An annular third stator is provided on one of the Y-axis moving member and the T-axis rotating member, and a third mover that is matched with the third stator is provided on the other of the Y-axis moving member and the T-axis rotating member. The third mover and the third stator cooperate to drive the T-axis rotating member to rotate; The printing table is connected to the T-axis rotating member.

[0030] A three-axis alignment platform with a simple structure and stable driving is provided, which can drive the corresponding printing table to translate and rotate on the horizontal plane, so as to complete the position adjustment of the solar cell located on the printing table.

[0031] This application also provides a solar cell printing device, which includes an input mechanism, an output mechanism, and the solar cell printing device described in any one of the above items, where: The input mechanism is configured to convey the solar cell to be printed to the printing table on the printing platform; The output mechanism is configured to receive the printed solar cell from the printing table on the printing platform and output the printed solar cell.

[0032] Through the cooperation of the input mechanism, the solar cell printing device, and the output mechanism, the solar cell printing device provided by this application realizes the synchronous printing of more than two solar cells, and realizes the automatic loading and unloading of solar cells, thereby improving the solar cell printing efficiency.

[0033] In some embodiments, the input mechanism includes a brush assembly, an anti-static assembly, and an air knife assembly arranged along the conveying path of the input mechanism. Among them, the brush assembly is configured to brush off the impurities on the surface of the solar cell, the anti-static assembly is configured to remove the static electricity on the surface of the solar cell, and the air knife assembly is configured to blow air towards the solar cell.

[0034] By setting the brush assembly, the impurities on the surface of the solar cell are brushed off. By setting the anti-static assembly, the static electricity on the surface of the solar cell is removed. By setting the air knife assembly, the minute impurities on the surface of the solar cell are blown off.

[0035] In some embodiments, the solar cell printing device further includes a rectifying mechanism disposed on the conveying path of the input mechanism and / or the output mechanism. The rectifying mechanism is configured to rectify the solar cells passing through it. The solar cell printing device further includes an outgoing material detection camera configured to photograph and detect the printing quality of the solar cells that have completed printing.

[0036] By providing a rectifying mechanism on the input mechanism, the positioning of the solar cells to be printed is corrected, ensuring that the printing table can smoothly receive the solar cells to be printed from the input mechanism. By providing a rectifying mechanism on the output mechanism, the positioning of the solar cells that have completed printing is corrected. By providing an outgoing material detection camera, automatic detection of the printing quality of the solar cells that have completed printing is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a schematic structural diagram of the solar cell printing device in an embodiment of the present application;

[0038] Figure 2 is a schematic structural diagram of the connection structure between the printing table and the driving mechanism in an embodiment of the present application;

[0039] Figure 3 is a schematic structural diagram of the printing table in an embodiment of the present application;

[0040] Figure 4 is a schematic structural diagram of the printing table after omitting the second printing table in an embodiment of the present application;

[0041] Figure 5 is a schematic structural diagram of the three-axis alignment platform in an embodiment of the present application;

[0042] Figure 6 is a schematic structural diagram of the printing mechanism in an embodiment of the present application;

[0043] Figure 7 is a schematic structural diagram of the printing mechanism after omitting the mounting bracket in an embodiment of the present application;

[0044] Figure 8 is a schematic structural diagram of the printing assembly in an embodiment of the present application;

[0045] Figure 9 is a schematic structural diagram of the second lifting part and the ink return knife module in an embodiment of the present application;

[0046] Figure 10 is a schematic structural diagram of the input mechanism in an embodiment of the present application;

[0047] Figure 11 is a schematic structural diagram of the input mechanism and the printing table in an embodiment of the present application.

[0048] Figures 1 to 11It includes:

[0049] Solar cell printing device 10:

[0050] Printing mechanism 1: mounting bracket 11, moving module 12, screen printing component 13, printing component 14, screen printing mounting bracket 131, screen printing plate 132, first printing area 1321, second printing area 1322, mounting plate 140, first lifting part 141, first motor 1411, first lead screw module 1412, sliding plate 1413, second lifting part 142, second motor 1421, second lead screw module 1422, voice coil motor 143, squeegee module 144, drive plate 1441, squeegee mounting bracket 1442, squeegee 1443, rotating shaft 1444, first baffle plate 1445, ink return knife module 145, connecting plate 1451, ink return knife 1452, second baffle plate 1453;

[0051] Mounting base 2;

[0052] Printing table 3: carrier table 31, first printing table 32, second printing table 33, three-axis alignment platform 34, adsorption holes 35, conveyor belt avoidance groove 36, base 341, X-axis moving part 342, Y-axis moving part 343, T-axis rotating part 344;

[0053] Drive mechanism 4: translation drive part 41, lifting drive part 42;

[0054] Positioning camera 5;

[0055] Input mechanism 20:

[0056] Brush component 21, static elimination component 22, air knife component 23, alignment mechanism 24;

[0057] Output mechanism 30. Specific implementation mode

[0058] To make the above objects, features and advantages of the present application more obvious and understandable, the present application will be further described in detail below with reference to the accompanying drawings and specific implementation modes.

[0059] As Figures 1 to 4 shown, the solar cell printing device 10 in the embodiment of the present application includes a printing mechanism 1, a mounting base 2, at least one printing table 3 mounted on the mounting base 2, and a drive mechanism 4 corresponding to the printing table 3 one by one, wherein:

[0060] The drive end of the drive mechanism 4 is in transmission connection with the corresponding printing table 3, a printing station is provided on the mounting base 2, and the drive mechanism 4 is configured to drive the corresponding printing table 3 to move to the printing station.

[0061] The printing table 3 includes a carrier table 31 and at least two printing platforms (e.g., two in the figure) provided on the carrier table 31. Each printing platform is used to carry a battery cell, and at least one printing platform is equipped with an independent three-axis alignment platform 34, which is configured to adjust the horizontal position of the printing platform.

[0062] The printing mechanism 1 is located at the printing station, and the printing mechanism 1 is configured to synchronously print at least two battery cells on the printing table 3 that moves to the printing station.

[0063] In the embodiment of the present application, the battery cell printing device 10 can synchronously print at least two battery cells, thereby improving the printing efficiency of the battery cells. In particular, the printing table 3 can adjust the position of at least one battery cell thereon, so that the relative positions of the battery cells thereon meet the printing requirements, and finally ensure that the printing quality of each battery cell meets the requirements.

[0064] As Figures 2 to 4 shown, optionally, two printing platforms are provided on the carrier table 31 of the printing table 3, namely a first printing platform 32 and a second printing platform 33. Among them, the first printing platform 32 is fixedly provided on the carrier table 1. The three-axis alignment platform 34 is provided on the carrier table 31, and the second printing platform 33 is connected to the moving part of the three-axis alignment platform 34. The three-axis alignment platform 34 is configured to drive the second printing platform 33 to translate and rotate on the horizontal plane to adjust the position of the battery cell located on the second printing platform 33. That is to say, the second printing platform 33 has an independent three-axis alignment platform 34.

[0065] The optional working process of the battery cell printing device 10 in the embodiment of the present application is as follows:

[0066] First, two battery cells are respectively loaded onto the first printing platform 32 and the second printing platform 33 of the printing table 3, and the positioning camera is controlled to take pictures and position the battery cells on the first printing platform 32 and the second printing platform 33 to obtain the position information of the battery cells on the first printing platform 32 and the second printing platform 33.

[0067] Then, the printing mechanism 1 adjusts the position of the screen printing plate according to the position information of the battery cell on the first printing platform 32, so that a printing area of the screen printing plate is adapted to the position of the battery cell on the first printing platform 32. Subsequently, the three-axis alignment platform 34 adjusts the position of the battery cell on the second printing platform 33 according to the position information of the battery cell located on the second printing platform 33, so that the other printing area of the screen printing plate is adapted to the position of the battery cell on the second printing platform 33.

[0068] Then, the driving mechanism 4 drives the printing table 3 to move to the printing station. At this time, the two printing areas of the screen printing plate are respectively aligned with the two battery cells, and the printing mechanism 1 synchronously prints the battery cells on the first printing platform 32 and the second printing platform 33.

[0069] Since the two printing areas on the screen printing plate are respectively adapted to the positions of the battery wafers on the first printing table 32 and the second printing table 33, the printing quality of the two battery wafers by the printing mechanism 1 can be ensured.

[0070] Optionally, adsorption holes 35 for adsorbing the battery wafers are provided on the bearing surfaces of the first printing table 32 and the second printing table 33. The first printing table 32 and the second printing table 33 respectively adsorb the battery wafers through the adsorption holes 35 on their bearing surfaces, preventing the battery wafers from sliding during the printing process and affecting the printing quality.

[0071] Of course, three or other numbers of printing tables can also be provided on the carrier 31 of the printing table 3, so that the printing mechanism 1 can perform synchronous printing on three or more battery wafers. For example, when three printing tables are provided on the carrier 31 of the printing table 3, the first printing table can be fixedly arranged on the carrier 31, and the second printing table and the third printing table respectively have independent three-axis alignment platforms. Before printing, the printing mechanism 1 adjusts the position of the screen printing plate according to the position information of the battery wafer on the first printing table, so that one printing area of the screen printing plate is adapted to the position of the battery wafer on the first printing table. Subsequently, the three-axis alignment platforms corresponding to the second printing table and the third printing table respectively perform position adjustment on the second printing table and the third printing table according to the position information of the battery wafers thereon, so that the battery wafers on the second printing table and the third printing table are respectively adapted to the positions of the other two printing areas of the screen printing plate. In this way, the synchronous printing quality of the three battery wafers on the printing table 3 by the printing mechanism 1 can be ensured.

[0072] As Figure 5 shown, optionally, the three-axis alignment platform 34 includes a base 341, an X-axis moving member 342, a Y-axis moving member 343 and a T-axis rotating member 344, wherein:

[0073] The X-axis moving member 342 is slidably connected to the base 341. A first stator is provided on one of the base 341 and the X-axis moving member 342, and a first mover matching the first stator is provided on the other of the base 341 and the X-axis moving member 342. The first mover and the first stator cooperate to drive the X-axis moving member 42 to slide along the X-axis direction on the base.

[0074] The Y-axis moving member 343 is slidably connected to the X-axis moving member 342. A second stator is provided on one of the X-axis moving member 342 and the Y-axis moving member 343, and a second mover matching the second stator is provided on the other of the X-axis moving member 342 and the Y-axis moving member 343. The second mover and the second stator cooperate to drive the Y-axis moving member 343 to slide along the Y-axis direction on the X-axis moving member 342.

[0075] The T-axis rotating member 344 is rotatably connected to the Y-axis moving member 343. A ring-shaped third stator is provided on one of the Y-axis moving member 343 and the T-axis rotating member 344, and a third mover matching the third stator is provided on the other of the Y-axis moving member 343 and the T-axis rotating member 344. The third mover and the third stator cooperate to drive the T-axis rotating member 344 to rotate. The printing platform (such as the second printing platform 33) is connected to the T-axis rotating member 344.

[0076] It can be seen that through the cooperative driving of the X-axis moving member 342, the Y-axis moving member 343, and the T-axis rotating member 344, the three-axis alignment platform 34 can drive the printing platform to translate in the X-axis and Y-axis directions and rotate around the T-axis on the horizontal plane, so as to realize the position adjustment of the battery cell located on the printing platform.

[0077] Of course, a UVW alignment platform with other existing structures can also be used as the three-axis alignment platform 34 in the embodiments of the present application, such as a UVW platform composed of multiple motors, lead screw modules, and cross rails.

[0078] As Figure 1 and Figure 2 As shown in the figure, the driving mechanism 4 includes a translation driving part 41 and a lifting driving part 42. Among them, the translation driving part 41 is connected to the mounting base 2, the lifting driving part 42 is connected to the moving part of the translation driving part 41, and the first end of the carrier 31 is connected to the moving part of the lifting driving part 42. The translation driving part 41 is configured to drive the carrier 31 to translate, and the lifting driving part 42 is configured to drive the carrier 31 to lift.

[0079] By driving the carrier 31 to translate through the translation driving part 41, the carrier 31 can be moved to the loading station to receive the battery cell to be printed, convey the battery cell to be printed to the printing station, and convey the printed battery cell to the unloading station. By driving the carrier 31 to lift through the lifting driving part 42, the height adjustment of the printing platform can be implemented. For example, when the battery cell to be printed reaches the printing station, the lifting driving part 42 can drive the carrier 31 to rise, so that the battery cell to be printed on the printing platform is close to the screen plate of the printing mechanism 1, ensuring that the printing mechanism 1 effectively prints the battery cell, and also ensuring that the printing platform does not interfere with the screen plate.

[0080] Since the overall weight of the three-axis alignment platform 34 and the printing platform connected thereto is greater than the weight of the printing platform without the three-axis alignment platform 34, optionally, the three-axis alignment platform 34 and the printing platform connected thereto are arranged close to the first end of the carrier (i.e., the end close to the driving mechanism 4). In this way, the center of gravity of the printing table 3 can be close to the driving mechanism 4, thereby improving the driving stability of the driving mechanism 4 for the printing table 3 and preventing the printing table 3 from deforming and sagging.

[0081] For example, as Figure 2As shown in the figure, in the case where a first printing table 32 and a second printing table 33 are provided on the carrier 31, the first printing table 32 is provided near the second end of the carrier 31 (i.e., the end away from the driving mechanism 4), and the second printing table 33 and its three-axis alignment platform 34 are provided near the first end of the carrier 31 (i.e., the end close to the driving mechanism 4).

[0082] As Figure 1 shown, optionally, the printing tables 3 are provided in four. Two of the printing tables 3 are installed on the first side wall (such as the front side wall) of the mounting base 2 through the corresponding driving mechanisms 4, and the other two printing tables 3 are installed on the second side wall (such as the rear side wall) of the mounting base 2 opposite to the first side wall through the corresponding driving mechanisms 4. The four printing tables 4 alternately drive the battery wafers to the printing stations for printing, further improving the printing efficiency. In addition, since two printing tables 3 are respectively installed on the first side wall and the second side wall of the mounting base 2, the support stability of the mounting base 2 for the printing tables 3 can be improved, and the printing effect can be enhanced. The printing tables 3 can also be provided in two, and the two printing tables 3 are respectively arranged on the first side wall and the second side wall of the mounting base 2, and the two printing tables 3 alternately drive the battery wafers to the printing stations for printing.

[0083] As Figures 6 to 7 shown, optionally, the printing mechanism 1 includes a mounting frame 11, a moving module 12, a screen plate assembly 13 and a printing assembly 14, wherein: the moving module 12 is arranged on the mounting frame 11, and the printing assembly 14 is slidably connected to the mounting frame 11 and connected to the moving part of the moving module 12. The screen plate assembly 13 is arranged on the mounting frame 11 and is located below the printing assembly 14. The moving module 12 is configured to drive the printing assembly 14 abutting against the screen plate assembly 13 to reciprocate horizontally along the screen plate assembly 13, so that the printing paste passes through the screen plate assembly 13 and is printed on the battery wafer located at the printing station.

[0084] Optionally, the screen plate assembly 13 includes a screen plate mounting frame 131, a screen plate 132 and a screen plate adjusting member, wherein: the screen plate mounting frame 131 and the screen plate adjusting member are both installed on the mounting frame 11, and the screen plate mounting frame 131 is in transmission connection with the screen plate adjusting member. The screen plate 132 is detachably installed on the screen plate mounting frame 131, and a first printing area 1321 and a second printing area 1322 are arranged side by side on the screen plate 132. The screen plate adjusting member is configured to drive the screen plate mounting frame 131 to translate and rotate on the horizontal plane, so that one of the first printing area 1321 and the second printing area 1322 of the screen plate 132 is adapted to the position of the battery wafer located on the first printing table 32, and the three-axis alignment platform 34 is configured to perform position adjustment on the second printing table 33, so that the other of the first printing area 1321 and the second printing area 1322 is adapted to the position of the battery wafer located on the second printing table 33.

[0085] For example, in one embodiment, the first printing table 32 of the printing table 3 corresponds to the first printing area 1321 of the stencil 132, and the second printing table 33 of the printing table 3 corresponds to the second printing area 1322 of the stencil 132.

[0086] The process of the printing table 3 cooperating and aligning with the stencil assembly 13 is as follows:

[0087] First, two battery wafers are respectively loaded onto the first printing table 32 and the second printing table 33 of the printing table 3, and the positioning camera is controlled to take pictures and position the battery wafers on the first printing table 32 and the second printing table 33, so as to obtain the position information of the battery wafers on the first printing table 32 and the second printing table 33.

[0088] Next, the stencil adjusting member adjusts the position of the stencil 132 according to the position information of the battery wafer on the first printing table 32, so that the first printing area 1321 of the stencil 132 is adapted to the position of the battery wafer on the first printing table 32 (that is, when the first printing table 32 carries the battery wafer and moves below the stencil, the first printing area 1321 is aligned with the battery wafer). Of course, if the initial position of the first printing area 1321 of the stencil 132 has been adapted to the position of the battery wafer on the first printing table 32, there is no need to adjust the position of the stencil 132.

[0089] Subsequently, the three-axis alignment platform 34 adjusts the position of the battery wafer on the second printing table 33 according to the position information of the battery wafer on the second printing table 33, so that the second printing area 1322 of the stencil 132 is adapted to the position of the battery wafer on the second printing table 33 (that is, when the second printing table 33 carries the battery wafer and moves below the stencil, the second printing area 1322 of the battery wafer is aligned with the battery wafer).

[0090] As Figure 1 shown, optionally, the battery wafer printing device 10 in the embodiment of the present application further includes a positioning camera 5, and the positioning camera 5 is configured to position the battery wafer on the first printing table 32 and the battery wafer on the second printing table 33, so as to obtain the position information of the battery wafer on the first printing table 32 and the position information of the battery wafer on the second printing table 33. Optionally, the positioning camera 5 can select two sets of matrix cameras composed of 5 cameras to respectively photograph and position the two battery wafers.

[0091] In this way, the screen adjustment member can drive the screen mounting bracket 131 to translate and rotate on the horizontal plane based on the position information of the solar cell located on the first printing table 32, so that one of the first printing area 1321 and the second printing area 1322 of the screen 132 is adapted to the position of the solar cell located on the first printing table 32. The three-axis alignment platform 34 can adjust the position of the second printing table 33 based on the position information of the solar cell located on the second printing table 33, so that the other of the first printing area 1321 and the second printing area 1322 is adapted to the position of the solar cell located on the second printing table 33.

[0092] As Figures 8 to 9 shown, optionally, the printing assembly 14 includes a mounting plate 140, a first lifting part 141, a second lifting part 142, a voice coil motor 143, a squeegee module 144 and an ink return knife module 145, where: The first lifting part 141 and the second lifting part 142 are arranged side by side on the mounting plate 140. The voice coil motor 143 is connected to the movable part of the first lifting part 141, the squeegee module 144 is connected to the driving end of the voice coil motor 143, the first lifting part 141 is configured to drive the squeegee module 144 to lift and lower, and when the squeegee module 144 descends to the low position, it contacts the screen assembly 13. The voice coil motor 143 is configured to press the squeegee module 144 against the screen assembly 13 with a constant pressure. The ink return knife module 145 is connected to the movable part of the second lifting part 142, the second lifting part 142 is configured to drive the ink return knife module 145 to lift and lower, and when the ink return knife module 145 descends to the low position, it approaches the screen assembly 13.

[0093] The optional printing process of the printing assembly 14 for the solar cell is as follows:

[0094] In the initial state, the printing assembly 14 is located at the first end (such as the left end) of the screen assembly 13, and both the squeegee module 144 and the ink return knife module 145 are at the high position away from the screen assembly 13.

[0095] The first lifting part 141 drives the squeegee module 144 to the low position, so that the squeegee module 144 is elastically pressed against the screen assembly 13 with a constant pressure under the drive of the voice coil motor 143. At this time, a slurry layer has been pre-coated on the screen surface. The ink return knife module 145 remains at the high position.

[0096] Then, the moving module 12 drives the printing assembly 14 to translate to the second end (such as the right end) of the screen assembly 13. During this process, the squeegee module 144 prints the printing slurry onto the solar cell located below the screen assembly 13 and closely attached to the screen assembly 13 with a constant scraping force.

[0097] So far, the printing of the first stroke is completed, and a printing slurry pile is formed between the squeegee module 144 and the ink return knife module 145.

[0098] Subsequently, the first lifting part 141 drives the scraper module 144 to a high position, so that the scraper module 144 is separated from the screen assembly 13. At the same time, the second lifting part 142 drives the ink return knife module 145 to a low position, so that a predetermined ink return gap is formed between the ink return knife module 145 and the screen assembly 13.

[0099] Next, the moving module 12 drives the printing component 14 to move back to the first end (such as the left end) of the screen component 13. During this process, the ink return knife module 145 performs an ink return action, so that the printing slurry is filled into the mesh holes of the screen component 13 and forms a uniform slurry coating.

[0100] At this time, the next printing can be carried out.

[0101] Since the first lifting part 141 that drives the scraper module 144 to rise and fall is connected to the scraper module 144 via the voice coil motor 143, when the first lifting part 141 drives the scraper module 144 to descend so that the scraper module 144 contacts the screen assembly 13, the voice coil motor 143 elastically presses the scraper module 144 against the screen assembly 13 with a constant pressure, thereby ensuring that the scraper module 144 can print the printing paste onto the battery cell with a constant scraping force, thereby improving the printing consistency.

[0102] The voice coil motor is a commonly used constant force output device, and the value of the driving force it outputs is proportional to the current applied to the coil. Therefore, in the embodiment of the present application, it is only necessary to ensure that the current applied to the coil of the voice coil motor remains constant, so that the voice coil motor can elastically press the scraper module onto the screen assembly with a constant pressure. The specific structure and working principle of the voice coil motor are well known to those skilled in the art, and for the sake of brevity, they will not be repeated here.

[0103] Optionally, the first lifting part 141 includes a first motor 1411, a first screw module 1412 and a slide plate 1413, wherein: the slide plate 1413 is connected to the mounting plate 140 in a lifting and sliding manner, and is connected to the first motor 1411 disposed on the mounting plate 140 through the first screw module 1412, and the voice coil motor 143 is mounted on the slide plate 1413. The first motor 1411 is configured to drive the slide plate 1413 to lift and slide along the mounting plate 140, thereby driving the voice coil motor 143 and the scraper module 144 to lift and lift.

[0104] The screw drive structure composed of the first motor 1411 and the first screw module 1412 can ensure the lifting stability of the voice coil motor 143 and the scraper module 144, and can ensure the lifting stroke of the scraper module 144. Of course, other existing linear drive modules can also be used to drive the slide plate 1413 to lift and slide along the mounting plate 140, such as a cylinder drive module composed of a cylinder, a slide rail and a slider.

[0105] Optionally, the scraper module 144 includes a driving plate 1441, a scraper mounting frame 1442 and a scraper 1443, wherein the driving plate 1441 is connected to the slide plate 1413 in a manner that it can be lifted and slidably. The driving plate 1441 is connected to the driving end of the voice coil motor 143, and the scraper mounting frame 1442 is rotatably connected to the lower end of the driving plate 1441. The scraper 1443 is mounted on the scraper mounting frame 1442.

[0106] Optionally, the scraper mounting frame 1442 is rotatably connected to the lower end of the driving plate 1441 via the rotating shaft 1444. In this way, when the first lifting part 141 drives the scraper module 144 to descend to a position, the scraper mounting frame 1443 completes adaptive rotation under the action of its own gravity and / or the force of the screen assembly, thereby ensuring that the blade of the scraper 1443 forms a full contact with the screen assembly 13, and improving the scraping consistency of the scraper 1443 on the scraping slurry.

[0107] Optionally, first baffle plates 1445 are provided at both ends of the scraper mounting frame 1443, and the scraper 1443 is located between the two first baffle plates 1445. By providing the first baffle plates 1445 at both ends of the scraper mounting frame 1442, the printing paste located in the moving direction of the scraper 1443 is gathered to prevent the printing paste from being driven out of the moving range of the scraper.

[0108] Optionally, when the screen has two identical printing areas, in order to enable the scraper to fit the screen more accurately, the scraper 1443 can be set as two smaller scrapers, that is, the blades of the two scrapers extend along the same straight line, and the two smaller scrapers are respectively mounted on the lower ends of two scraper mounting frames, and the two scraper mounting frames can be rotatably mounted on the lower end of the same driving plate 1441.

[0109] Optionally, the second lifting part 142 includes a second motor 1421 and a second screw module 1422, and the ink return knife module 145 includes a connecting plate 1451 and an ink return knife 1452, wherein the connecting plate 1451 is connected to the second motor 1421 through the second screw module 1422. The ink return knife 1452 is mounted on the connecting plate 1451.

[0110] The screw drive structure composed of the second motor 1421 and the second screw module 1422 can ensure the lifting stability of the ink return knife module 145 and increase the lifting stroke of the ink return knife module 145. Of course, other existing linear drive structures can also be used to lift the ink return knife module 145, such as a cylinder drive module composed of a cylinder, a slide rail and a slider.

[0111] Optionally, second baffle plates 1453 are formed at both ends of the ink return blade 1452. The second baffle plates 1453 collect the printing paste located in the moving direction of the ink return blade 1452, preventing the printing paste from being driven outside the moving range of the ink return blade, thereby improving the ink return effect of the ink return blade 1452.

[0112] Continue to refer to Figure 1 As shown, an embodiment of the present application further provides a solar cell printing device, which includes an input mechanism 20, an output mechanism 30, and the solar cell printing device 10 provided in any of the above embodiments. Among them: the input mechanism 20 is configured to convey the solar cells to be printed to the printing table 3 of the printing platform. The output mechanism 30 is configured to receive the printed solar cells from the printing table 3 of the printing platform and output the printed solar cells.

[0113] Through the cooperation of the input mechanism 20, the solar cell printing device 10, and the output mechanism 30, the solar cell printing device provided by the embodiment of the present application realizes the synchronous printing of two or more solar cells and realizes the automatic loading and unloading of solar cells, thereby improving the solar cell printing efficiency.

[0114] Optionally, both the input mechanism 20 and the output mechanism 30 are conveyor belt mechanisms. As Figure 11 shown, in order to enable the printing table 3 on the solar cell printing platform to be docked with the conveyor belt to receive the solar cells to be printed input by the input mechanism 20 and convey the printed solar cells to the output mechanism 30, optionally, a conveyor belt avoidance groove 36 is provided on the printing table.

[0115] When the printing table 3 moves to the position below the output end of the input mechanism 20 under the drive of the drive mechanism 4, the printing table 3 is located below the output end of the input mechanism 20. Subsequently, the drive mechanism 4 drives the printing table 3 to rise, and the output end of the input mechanism 20 can sink into the conveyor belt avoidance groove 36 of the printing table, so that the solar cells on the output end of the input mechanism 20 fall onto the printing table.

[0116] When the printing table 3 moves to the position below the output end of the input mechanism 20 under the drive of the drive mechanism 4, the printing table 3 is located below the output end of the input mechanism 20. Subsequently, the drive mechanism 4 drives the printing table 3 to rise, and the output end of the input mechanism 20 can sink into the conveyor belt avoidance groove 36 of the printing table, so that the solar cells on the output end of the input mechanism 20 fall onto the printing table.

[0117] As Figure 10 shown, optionally, a brush assembly 21, an electrostatic elimination assembly 22, and an air knife assembly 23 are provided on the conveying path of the input mechanism 20. Among them, the brush assembly 21 is configured to brush off the impurities on the surface of the solar cells, the electrostatic elimination assembly 22 is configured to remove the static electricity on the surface of the solar cells, and the air knife assembly 23 is configured to blow air toward the solar cells to blow off the minute impurities on the surface of the solar cells.

[0118] Optionally, the battery cell printing device in the embodiments of the present application further includes a rectifying mechanism 24 disposed on the conveying path of the input mechanism 20. The rectifying mechanism 24 is configured to rectify the battery cells to be printed passing through the rectifying mechanism, so as to ensure that the printing table 3 can smoothly receive the battery cells to be printed from the input mechanism 20.

[0119] Of course, a rectifying mechanism may also be provided on the conveying path of the output mechanism 30, and this rectifying mechanism can rectify the positions of the printed battery cells.

[0120] Optionally, the battery cell printing device in the embodiments of the present application further includes an outgoing material detection camera disposed above the output mechanism 30, and the outgoing material detection camera realizes the automatic detection of the printing quality of the printed battery cells.

[0121] The embodiments of the present application also provide a battery cell printing method, which includes the following steps:

[0122] S1. Feed the first battery cell and the second battery cell onto the first printing table and the second printing table respectively.

[0123] S2. Position the first battery cell and the second battery cell to obtain the actual positions of the first battery cell and the second battery cell.

[0124] S3. Align one of the first printing area and the second printing area of the stencil with the first battery cell, so that one of the first printing area and the second printing area of the stencil is adapted to the position of the first battery cell.

[0125] S4. Align the second battery cell with the other of the first printing area and the second printing area of the stencil, so that the second battery cell is adapted to the position of the other of the first printing area and the second printing area of the stencil.

[0126] S5. Control the first printing table and the second printing table to move to the printing station.

[0127] S6. Synchronously print the first battery cell and the second battery cell.

[0128] The battery cell printing method provided by the embodiments of the present application can simultaneously print two battery cells, and ensure that the two battery cells are respectively aligned with the first printing area and the second printing area of the stencil, thereby ensuring the printing quality of the two battery cells.

[0129] The battery cell printing method in the embodiments of the present application can be implemented by the battery cell printing device in any of the previous embodiments.

[0130] Optionally, the alignment of one of the first printing area and the second printing area of the stencil with the first battery cell in step S3 specifically includes:

[0131] S31. Obtain the standard position of the pre-stored first solar cell.

[0132] After the stencil is installed, the first printing area and the second printing area thereof have constant initial positions. The initial position of one of the first printing area and the second printing area is adapted to the standard position of the pre-stored first solar cell. That is, if the first solar cell is loaded onto the first printing table according to the standard position, the first solar cell is adapted to the position of one of the first printing area and the second printing area.

[0133] However, in the actual loading process, it is very difficult to ensure that when the first solar cell is loaded onto the first printing table, its actual position is exactly the same as the standard position.

[0134] S32. Generate a first position adjustment strategy based on the actual position of the first solar cell and the standard position of the first solar cell.

[0135] If the actual position of the first solar cell is the same as the actual position of the first solar cell, then the first solar cell is already adapted to the position of one of the first printing area and the second printing area. At this time, there is no need to perform a position adjustment on the stencil. That is to say, the first position adjustment strategy generated at this time is not to perform an adjustment action.

[0136] If there is a deviation between the actual position of the first solar cell and the actual position of the first solar cell, then generate a first position adjustment strategy according to the position deviation between the actual position of the first solar cell and the standard position of the first solar cell. For example, the position deviation between the actual position of the first solar cell and the standard position of the first solar cell is: there is a deviation of +0.1 mm on the X-axis, a deviation of -0.3 mm on the Y-axis, and a deviation of +0.7° on the T-axis. The corresponding first position adjustment strategy generated is: control the stencil to translate 0.1 mm in the reverse direction of the X-axis, control the stencil to translate 0.3 mm in the positive direction of the Y-axis, and control the stencil to rotate counterclockwise by 0.7°.

[0137] S33. Perform a position adjustment on the stencil according to the first position adjustment strategy.

[0138] After performing a position adjustment on the stencil, it is possible to make one of the first printing area and the second printing area of the stencil adapted to the position of the first solar cell.

[0139] Optionally, the specific alignment of the second solar cell with the other of the first printing area and the second printing area of the stencil in step S4 specifically includes:

[0140] S41. Determine the target position of the second solar cell according to the actual position of the first solar cell.

[0141] Since the position of the second printing area of the stencil relative to the first printing area of the stencil is determined. Therefore, when the two printing areas of the stencil are respectively adapted to the positions of the first solar cell and the second solar cell, the position of the second solar cell relative to the first solar cell is also determined. Therefore, according to the actual position of the first solar cell, the target position of the second solar cell can be determined.

[0142] After adjusting the second solar cell to this target position, it can be ensured that (when the solar cell reaches the printing station) the two printing areas of the stencil are respectively adapted to the positions of the first solar cell and the second solar cell.

[0143] S42. Generate a second position adjustment strategy based on the actual position of the second solar cell and the target position of the second solar cell.

[0144] If the actual position of the second solar cell is the same as the actual position of the second solar cell, then the position of the second solar cell and the other one of the first printing area and the second printing area has been adapted, and at this time, no position adjustment needs to be performed on the second printing table. That is to say, the second position adjustment strategy generated at this time is not to execute the adjustment action.

[0145] If there is a deviation between the actual position of the second solar cell and the target position of the second solar cell, then a second position adjustment strategy is generated according to the position deviation between the actual position of the second solar cell and the target position of the second solar cell. For example, the position deviation between the actual position of the second solar cell and the target position of the second solar cell is: there is a deviation of -0.2 mm on the X-axis, a deviation of +0.1 mm on the Y-axis, and a deviation of -0.5° on the T-axis (i.e., the angle on the horizontal plane). The corresponding second position adjustment strategy generated is: control the second printing table to translate 0.5 mm in the positive direction of the X-axis, control the second printing table to translate 0.1 mm in the reverse direction of the Y-axis, and control the stencil to rotate 0.5° clockwise. The actions in the above three axes can be performed simultaneously.

[0146] S43. Perform position adjustment on the second printing table according to the second position adjustment strategy.

[0147] After performing position adjustment on the second printing table, it can be ensured that the other one of the first printing area and the second printing area of the stencil is adapted to the position of the second solar cell.

[0148] Optionally, before synchronously printing the first solar cell and the second solar cell, the solar cell printing method in the embodiments of the present application further includes:

[0149] Control the first printing table and the second printing table to rise to a predetermined printing height, so that the solar cell on the first printing table and the solar cell on the second printing table are close to the stencil, so as to ensure that the printing paste is effectively scraped onto the solar cell.

[0150] Optionally, after synchronously printing on a first cell and a second cell, the cell printing method in the embodiments of the present application further includes: controlling the first printing table and the second printing table to descend and return to their original positions.

[0151] The above has described the present application in sufficient detail with a certain particularity. Those of ordinary skill in the art should understand that the descriptions in the embodiments are merely exemplary, and all changes made without departing from the true spirit and scope of the present application should fall within the protection scope of the present application. The scope of protection required by the present application is defined by the claims described, rather than by the above descriptions in the embodiments.

Claims

1. A cell printing device, characterized in that: The cell printing device comprises a printing mechanism, a mounting seat, at least one printing table mounted on the mounting seat, and a driving mechanism corresponding to the printing table one by one, wherein: The driving end of the driving mechanism is drivingly connected to the corresponding printing table, a printing station is provided on the mounting seat, and the driving mechanism is configured to drive the corresponding printing table to move to the printing station; The printing platform includes a carrier and at least two ink pads arranged on the carrier, each ink pad is used to carry a battery sheet, and at least one ink pad has an independent three-axis alignment platform, and the three-axis alignment platform is configured to adjust the horizontal position of the ink pad; The printing mechanism is located at the printing station, and is configured to perform synchronous printing on at least two battery cells on a printing table moved to the printing station.

2. The cell printing device according to claim 1, characterized in that: The at least two ink pads include a first ink pad and a second ink pad, wherein: The first ink pad is fixedly arranged on the carrier; The three-axis alignment platform is arranged on the carrier, the second ink pad is connected to the movable part of the three-axis alignment platform, and the three-axis alignment platform is configured to drive the second ink pad to translate and rotate on a horizontal plane to adjust the position of the battery cell located on the second ink pad.

3. The cell printing device according to claim 2, characterized in that: Adsorption holes for adsorbing battery cells are arranged on the bearing surfaces of the first ink pad and the second ink pad.

4. The cell printing device according to claim 1, characterized in that: The driving mechanism comprises a translation driving part and a lifting driving part, wherein the translation driving part is connected to the mounting seat, the lifting driving part is connected to the movable part of the translation driving part, and the first end of the carrier is connected to the movable part of the lifting driving part; The translation driving unit is configured to drive the stage to translate, and the lifting driving unit is configured to drive the stage to lift.

5. The cell printing device according to claim 4, characterized in that: The three-axis alignment platform is arranged close to the first end of the carrier.

6. The cell printing device according to claim 1, characterized in that: The printing tables are arranged as 2n, wherein n of the printing tables are mounted on the first side wall of the mounting seat via the corresponding driving mechanisms, and the other n of the printing tables are mounted on the second side wall of the mounting seat opposite to the first side wall via the corresponding driving mechanisms, and n is 1 or 2.

7. The cell printing device according to claim 2, characterized in that: The printing mechanism includes a mounting frame, a moving module, a screen assembly and a printing assembly, wherein: The movable module is arranged on the mounting frame, and the printing assembly is slidably connected to the mounting frame and connected to the movable part of the movable module; The screen assembly is arranged on the mounting frame and is located below the printing assembly; The moving module is configured to drive the printing assembly resting on the screen assembly to move back and forth along the screen assembly, so that the printing paste passes through the screen assembly and is printed on the battery sheet located at the printing station.

8. The cell printing device according to claim 7, characterized in that: The screen assembly includes a screen mounting frame, a screen and a screen adjusting member, wherein: The screen mounting frame and the screen adjusting member are both mounted on the mounting frame, and the screen mounting frame is in transmission connection with the screen adjusting member; The screen is detachably mounted on the screen mounting frame, and a first printing area and a second printing area are arranged side by side on the screen; The screen adjustment component is configured to drive the screen mounting frame to translate and rotate on a horizontal plane so that one of the first printing area and the second printing area of ​​the screen is adapted to the position of the battery cell located on the first printing pad, and the three-axis alignment platform is configured to perform position adjustment on the second printing pad so that the other of the first printing area and the second printing area is adapted to the position of the battery cell located on the second printing pad.

9. The cell printing device according to claim 8, characterized in that: The cell printing device further includes a positioning camera, and the positioning camera is configured to position the cell located on the first printing pad and the cell located on the second printing pad; The screen adjustment member drives the screen mounting frame to translate and rotate on a horizontal plane based on the position information of the battery cell on the first printing pad, so that one of the first printing area and the second printing area of ​​the screen is adapted to the position of the battery cell on the first printing pad; The three-axis alignment platform is configured to adjust the position of the second ink pad based on the position information of the battery cell on the second ink pad so that the other of the first printing area and the second printing area is adapted to the position of the battery cell on the second ink pad.

10. The cell printing device according to claim 7, characterized in that: The printing assembly includes a mounting plate, a first lifting part, a second lifting part, a voice coil motor, a scraper module and an ink return knife module, wherein: The first lifting part and the second lifting part are mounted side by side on the mounting plate, and the mounting plate is slidably connected to the mounting frame; The voice coil motor is connected to the movable part of the first lifting part, the scraper module is connected to the driving end of the voice coil motor, the first lifting part is configured to drive the scraper module to move up and down, the scraper module contacts the screen assembly when it descends to a low position, and the voice coil motor is configured to press the scraper module onto the screen assembly with a constant pressure; The ink return knife module is connected to the movable component of the second lifting part, and the second lifting part is configured to drive the ink return knife module to rise and fall. When the ink return knife module descends to a low position, it is close to the screen assembly.

11. The cell printing device according to claim 1, characterized in that: The three-axis alignment platform includes a base, an X-axis moving part, a Y-axis moving part and a T-axis rotating part, wherein: The X-axis moving member is slidably connected to the base, a first stator is provided on one of the base and the X-axis moving member, a first mover matched with the first stator is provided on the other of the base and the X-axis moving member, and the first mover cooperates with the first stator to drive the X-axis moving member to slide on the base along the X-axis direction; The Y-axis moving member is slidably connected to the X-axis moving member, a second stator is provided on one of the X-axis moving member and the Y-axis moving member, a second mover matched with the second stator is provided on the other of the X-axis moving member and the Y-axis moving member, and the second mover cooperates with the second stator to drive the Y-axis moving member to slide on the X-axis moving member along the Y-axis direction; The T-axis rotating member is rotatably connected to the Y-axis moving member, one of the Y-axis moving member and the T-axis rotating member is provided with an annular third stator, the other of the Y-axis moving member and the T-axis rotating member is provided with a third mover matched with the third stator, and the third mover cooperates with the third stator to drive the T-axis rotating member to rotate; The ink pad is connected to the T-axis rotating member.

12. A cell printing device, characterized in that: The cell printing device comprises an input mechanism, an output mechanism and a cell printing device as claimed in any one of claims 1 to 11, wherein: The input mechanism is configured to transport the battery sheet to be printed to the printing pad of the printing station; The output mechanism is configured to receive the printed battery sheet from the printing pad of the printing station and output the printed battery sheet.

13. The cell printing device according to claim 12, characterized in that: The input mechanism includes a brush assembly, a static electricity removal assembly and a wind knife assembly arranged along the conveying path of the input mechanism, wherein the brush assembly is configured to brush away impurities on the surface of the battery cell, the static electricity removal assembly is configured to remove static electricity on the surface of the battery cell, and the wind knife assembly is configured to blow air toward the battery cell.

14. The cell printing device according to claim 12, characterized in that: The cell printing device further comprises a tidying mechanism disposed on a conveying path of the input mechanism and / or the output mechanism, wherein the tidying mechanism is configured to tidy the cell passing through the tidying mechanism; The battery cell printing device further includes a discharge inspection camera, which is configured to photograph and inspect the printing quality of the printed battery cells.

Images