A battery cell inkjet printing device

Abstract

This utility model discloses a battery cell inkjet printing device, including a worktable and a battery cell transport assembly disposed on the upper surface of the worktable. An inkjet printing assembly is also mounted on the upper surface of the worktable. The inkjet printing assembly includes: a first profile frame disposed on the upper surface of the worktable; when the battery cell is placed inside the first profile frame, linear modules are mounted on its three sidewalls facing the battery cell; and three printhead supports, each connected to one of the three linear modules, with printheads mounted at the ends of the printhead supports furthest from the linear modules. This utility model has a simple structure. By using three printheads to simultaneously print on the three surfaces of the battery cell, after the UV ink on these three sides has cured, the battery cell is clamped and fixed in a different direction, and the printing on the remaining three sides is completed. The entire printing process only requires one flip of the battery cell to complete all printing, improving the efficiency of UV ink printing on the battery cell.

Description

Technical Field

[0001] This utility model relates to the field of battery cell inkjet printing technology, specifically a battery cell inkjet printing device. Background Technology

[0002] In the power battery industry, lithium battery casings typically require an insulating material coating to provide a protective insulating layer. Currently, the main practice is to attach a protective film (commonly known as blue film) to the battery surface. However, plastic films are prone to aging, resulting in defects such as blistering and breakage, and there are also many limitations in equipment and manufacturing processes. To address these challenges, leading manufacturers in the industry have begun using UV-cured insulating materials (commonly known as UV insulating ink). This material offers significant advantages over blue film in terms of insulation, corrosion resistance, and adhesion. The current mainstream approach is to precisely spray UV ink onto the surface of the battery cell using a piezoelectric printhead, and then instantly cure it using a UV LED light source to form a stable coating.

[0003] However, current lithium battery surface printing technology still has many shortcomings. For example, most processes use single-sided printing, which means that after printing one surface of the cell, it needs to be flipped before printing the next surface. For square cells, it needs to be flipped multiple times, which directly leads to low efficiency and increased equipment costs. Therefore, a cell printing device is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a battery cell inkjet printing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a battery cell inkjet printing device, comprising a worktable and a battery cell transport assembly disposed on the upper surface of the worktable, wherein an inkjet printing assembly is further mounted on the upper surface of the worktable, the inkjet printing assembly comprising: The first profile frame is set on the upper surface of the workbench. When the battery cell is inside the first profile frame, linear modules are installed on the three side walls facing the battery cell. The printhead bracket has three parts, each connected to one of the three linear modules. A printhead is mounted on the end of the printhead bracket away from the linear module. The printhead is used to spray UV ink onto the stationary battery cell.

[0006] As a further embodiment of this utility model: the nozzle bracket is connected to the linear module via a base plate.

[0007] As a further embodiment of this utility model: the battery cell transport assembly includes a magnetically levitated stator mounted on the upper surface of the workbench, a magnetically levitated mover mounted on the magnetically levitated stator, a mounting base mounted on the magnetically levitated mover, a pad mounted on the mounting base, and a stop mounted on the pad for limiting one side of the battery cell.

[0008] As a further embodiment of this utility model: a slide rail is installed on the mounting base, a slider is installed on the slide rail, which can move along its length direction, and a slide table is installed on the slider. A clamping plate is installed on the slide table for clamping and limiting the battery cell relative to the opposite side of the support frame. A lead screw is threaded to the bottom of the slide table. A turntable is installed at one end of the lead screw, and the other end is fixed to the mounting base by a support block.

[0009] As a further embodiment of this utility model: the number of slide rails is two, the two slide rails are arranged side by side, and each slide rail is slidably mounted with a slider that is fixedly connected to the slide table.

[0010] As a further embodiment of this utility model, it further includes a UV curing component, which includes two second profile frames mounted on the upper surface of the workbench, and a pre-curing component and a final curing component are respectively mounted on the two second profile frames.

[0011] As a further embodiment of this utility model: the pre-curing component includes a strip UV lamp bracket mounted on a second profile frame, and a strip UV lamp is mounted on the strip UV lamp bracket.

[0012] As a further embodiment of this utility model: the final curing assembly includes a curing substrate mounted on a second profile frame, and two parallel curing guide rails are mounted on the side of the curing substrate away from the second profile frame. Both curing guide rails are slidably connected to one side of the curing slide. A motor support is mounted on the curing substrate, and a curing servo motor is mounted on the motor support. A curing screw is mounted on the output end of the curing servo motor, and a curing screw fixing seat connected to the curing substrate is threaded on the outer peripheral surface of the curing screw.

[0013] As a further embodiment of this invention, a position sensor is mounted on the cured substrate.

[0014] As a further embodiment of this utility model: a conformal UV lamp bracket is installed on the curing slide, and a conformal UV lamp is installed on the conformal UV lamp bracket.

[0015] Compared with the prior art, the beneficial effects of this utility model are: This application achieves the movement of the printhead position through the coordinated operation of the first profile frame, linear module, base plate and printhead bracket, and simultaneously prints on the three surfaces of the battery cell by setting three printheads. After the UV ink on the three sides is cured, the battery cell is clamped and fixed in a different direction, thereby completing the UV ink printing on the remaining three sides of the battery cell. The entire printing process only requires flipping the battery cell once to complete the printing on all sides, which greatly improves the efficiency of UV ink printing on the battery cell. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the battery cell transport assembly of this utility model; Figure 3 This is a schematic diagram of the inkjet printing component of this utility model; Figure 4 This is a schematic diagram of the UV curing component of this utility model; In the diagram: 1. Workbench; 2. Battery cell transport assembly; 3. Inkjet printing assembly; 4. UV curing assembly; 5. Magnetic levitation stator; 6. Magnetic levitation mover; 7. Mounting base plate; 8. Slider; 9. Slide rail; 10. Lead screw; 11. Slide table; 12. Pad; 13. Clamping plate; 14. Turntable; 15. First profile frame; 16. Linear module; 17. Base plate; 18. Printhead bracket; 19. Printhead; 20. Strip UV lamp; 21. Strip UV lamp bracket; 22. Curing base plate; 23. Curing guide rail; 24. Curing slide table; 25. Position sensor; 26. Curing servo motor; 27. Motor support; 28. Curing lead screw; 29. ​​Curing lead screw fixing seat; 30. Contouring UV lamp bracket; 31. Contouring UV lamp. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4In this embodiment of the present invention, a battery cell inkjet printing device includes a worktable 1 and a battery cell transport assembly 2 disposed on the upper surface of the worktable 1 for fixing the battery cell and realizing position movement. An inkjet printing assembly 3 is also mounted on the upper surface of the worktable 1. After the battery cell is fixed on the battery cell transport assembly 2, the battery cell transport assembly 2 can transport the battery cell to the printing point and the curing point respectively. The inkjet printing assembly 3 corresponds to the printing point, and the UV curing assembly 4 corresponds to the curing point. The inkjet printing assembly 3 includes: The first profile frame 15 is set on the upper surface of the workbench 1. When the battery cell is inside the first profile frame 15, linear modules 16 are installed on the three side walls facing the battery cell. There are three printhead brackets 18, which are connected to three linear modules 16 respectively. A printhead 19 is installed at the end of the printhead bracket 18 away from the linear module 16. The printhead 19 is used to spray UV ink onto the stationary battery cell.

[0019] Specifically, the first profile frame 15 has a U-shaped structure, with both ends fixedly connected to the upper surface of the workbench 1. There are two first profile frames 15 arranged side by side, connected by three connecting plates. The three connecting plates are located on both sides and above the first profile frame 15, and each of the three connecting plates is equipped with a linear module 16. The nozzle bracket 18 is connected to the linear module 16 through the base plate 17. The linear module 16 drives the nozzle bracket 18 to move in a straight line through the base plate 17, thereby completing the printing on the surface of the battery cell. The linear module 16 is specifically a linear motor module, a ball screw module, or other modules that can drive the base plate 17 to achieve linear movement. The nozzle 19 is installed on the nozzle bracket 18 away from the base plate 18. At the end of the linear module 16, the printhead 19 is specifically a XR series UV 3D printing printhead, which can achieve precise printing. The spray direction of the printhead 19 is towards the battery cell. When the battery cell stops at the designated spray position of the three printheads 19 (this position is the printing point) through the battery cell carrier component 2, the three printheads 19 simultaneously spray UV ink to print on the three surfaces of the battery cell, thereby completing the printing on multiple sides of the battery cell. After the UV ink on the three sides has cured, the direction is changed so that the unprinted side of the battery cell faces the three printheads 19 and the battery cell is clamped and fixed, thereby completing the UV ink printing on the remaining three sides of the battery cell. In the entire printing process, the battery cell only needs to be flipped once to complete the printing on all sides, which greatly improves the efficiency of UV ink printing on the battery cell.

[0020] Please see Figure 2In one embodiment, preferably, the battery cell transport assembly 2 includes a magnetically levitated stator 5 mounted on the upper surface of the worktable 1, a magnetically levitated mover 6 mounted on the magnetically levitated stator 5, a mounting base 7 mounted on the magnetically levitated mover 6, a pad 12 mounted on the mounting base 7, and a retainer mounted on the pad 12 for limiting one side of the battery cell. This allows for preliminary positioning of each battery cell installed, enabling rapid and accurate positioning. Furthermore, the magnetically levitated stator 5 is arranged along the length of the worktable 1, and the inkjet printing assembly 3 and the UV curing assembly 4 are both located above the magnetically levitated stator 5. The cooperation between the magnetically levitated stator 5 and the magnetically levitated mover 6 can drive the mounting base 7 located on the magnetically levitated mover 6, achieving precise transport and positioning of the battery cell, allowing it to remain in the designated area for printing and curing.

[0021] Please see Figure 2 In one embodiment, preferably, a slide rail 9 is mounted on the mounting base 7, and a slider 8 is mounted on the slide rail 9, which can move along its length. A slide table 11 is mounted on the slider 8, and the slide table 11 moves along the slide rail 9 and its position is adjusted. A clamping plate 13 is mounted on the slide table 11 for clamping and limiting the battery cell relative to the opposite side of the support frame. As the clamping size of the battery cell changes, the position of the slide table 11 on the slide rail 9 is adjusted. Under the action of the clamping plate 13 and the support frame, the battery cell in different states is clamped and fixed. The support frame and the clamping plate 13 are both connected to the pad 12 and the slide table 11 respectively by bolts, facilitating regular disassembly and cleaning by personnel. The bottom of the platform 11 is threaded with a lead screw 10. One end of the lead screw 10 is equipped with a turntable 14, and the other end is fixed to the mounting base plate 7 by a support block. There are two support blocks, which are sleeved on the outer circumference of the lead screw 10 to provide stable support for the lead screw 10. The end of the lead screw 10 is rotatably connected to the support block, so fixing the lead screw 10 will not affect its rotation. The turntable 14 makes it convenient for the operator to rotate the lead screw 10. Since the slide table 11 is slidably engaged with the slide rail 9 through the slider 8, the slide table 11 will not rotate with the lead screw 10 when it rotates, but will move along the length of the slide rail 9, thereby realizing the clamping and removal of different battery cells.

[0022] Please see Figure 2 In one embodiment, preferably, there are two slide rails 9 arranged side by side, and each slide rail 9 has a slider 8 fixedly connected to the slide table 11, which improves the stability of the slide table 11 when it moves.

[0023] Please see Figure 4In one embodiment, preferably, it further includes a UV curing component 4, which includes two second profile frames mounted on the upper surface of the workbench 1, and a pre-curing component and a final curing component are respectively mounted on the two second profile frames. Furthermore, the two second profile frames provide support for the pre-curing component and the final curing component, respectively.

[0024] Please see Figure 4 In one embodiment, preferably, the pre-curing component includes a strip UV lamp holder 21 mounted on a second profile frame, on which a strip UV lamp 20 is mounted. Furthermore, the strip UV lamp holder 21 provides support for the strip UV lamp 20 through the second profile frame, thereby performing preliminary curing treatment on the printed battery cell.

[0025] Please see Figure 4 In one embodiment, preferably, the final curing assembly includes a curing substrate 22 mounted on a second profile frame. Two parallel curing guide rails 23 are mounted on the side of the curing substrate 22 away from the second profile frame. Both curing guide rails 23 are slidably connected to one side of a curing slide 24. A motor support 27 is mounted on the curing substrate 22, and a curing servo motor 26 is mounted on the motor support 27. A curing screw 28 is mounted on the output end of the curing servo motor 26. The other end of the curing screw 28 is connected to the curing substrate 22 via a support block, and the curing screw 28 and the support block are rotatably connected. Next, a curing screw fixing seat 29 connected to the curing slide 24 is threaded onto the outer peripheral surface of the curing screw 28. Furthermore, the curing guide rail 23 is configured to provide a moving path for the curing slide 24, while the motor support seat 27 is mounted on the curing substrate 22 and located at the end of the curing screw 28, providing support for the curing servo motor 26. The end of the curing servo motor 26 is connected to the curing screw 28, and the curing servo motor 26 drives the curing screw 28 to rotate, thereby driving the curing screw fixing seat 29 and the curing slide 24 to move synchronously, realizing the upward or downward movement of the curing slide 24, and playing the role of adjusting the curing height.

[0026] Please see Figure 4 In one embodiment, preferably, a position sensor 25 is installed on the curing substrate 22 to sense the position of the curing slide 24, thereby obtaining the curing height and facilitating real-time adjustment.

[0027] Please see Figure 4 In one embodiment, preferably, a conformal UV lamp holder 31 is installed on the curing slide 24, and a conformal UV lamp 30 is installed on the conformal UV lamp holder 31, which serves to cure the ink into a film.

[0028] The working principle and usage process of this utility model are as follows: First, the battery cell is placed on the battery cell transport assembly 2. The turntable 14 is manually rotated to drive the lead screw 10 to clamp the battery cell with the clamping plate 13. Then, the magnetic levitation actuator 6 transports the battery cell to the printing point. The linear module 16 in the inkjet printing assembly 3 drives the printhead 19 to move synchronously from front to back on the surface of the battery cell for printing. Each battery cell is printed on 3 surfaces at a time. After printing is completed, the magnetic levitation actuator 6 transports the battery cell to the curing point. The battery cell is first pre-cured under the strip UV lamp 20, and then moved to the contour UV lamp 31 for final curing. The contour UV lamp 31 uses an LED light source to generate a specific ultraviolet wavelength, which reacts chemically with the UV curing agent in the UV ink, thereby achieving the effect of rapid curing of the film layer on the surface of the battery cell. Then, the magnetic levitation actuator 6 is reset, the turntable 14 is rotated in the opposite direction to remove and flip the battery cell. After flipping, the battery cell is clamped again for another round of printing and curing. When all 6 surfaces of the battery cell have been printed, it is removed.

[0029] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0030] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. A battery cell inkjet printing device, characterized in that, The system includes a worktable and a cell transport assembly disposed on the upper surface of the worktable. The upper surface of the worktable is also equipped with an inkjet printing assembly, which includes: The first profile frame is set on the upper surface of the workbench. When the battery cell is inside the first profile frame, linear modules are installed on the three side walls facing the battery cell. The printhead bracket has three parts, each connected to one of the three linear modules. A printhead is mounted on the end of the printhead bracket away from the linear module. The printhead is used to spray UV ink onto the stationary battery cell.

2. The battery cell inkjet printing apparatus according to claim 1, characterized in that, The nozzle bracket is connected to the linear module via a base plate.

3. The battery cell inkjet printing device according to claim 1, characterized in that, The battery cell transport assembly includes a magnetically levitated stator mounted on the upper surface of the workbench, a magnetically levitated mover mounted on the magnetically levitated stator, a mounting base mounted on the magnetically levitated mover, a pad mounted on the mounting base, and a stop mounted on the pad for limiting one side of the battery cell.

4. The battery cell inkjet printing apparatus according to claim 3, characterized in that, A slide rail is mounted on the mounting base, and a slider is mounted on the slide rail, which can move along its length. A slide table is mounted on the slider, and a clamping plate is mounted on the slide table for clamping and limiting the battery cell relative to the opposite side of the support frame. A lead screw is threaded to the bottom of the slide table, and a turntable is mounted on one end of the lead screw, while the other end is fixed to the mounting base by a support block.

5. The battery cell inkjet printing apparatus according to claim 4, characterized in that, The slide rails are of two types, arranged side by side, and each of them has a slider that is fixedly connected to the slide table.

6. The cell inkjet printing apparatus according to claim 1, characterized in that, It further includes a UV curing assembly, which includes two second profile frames mounted on the upper surface of the workbench, and a pre-curing assembly and a final curing assembly are respectively mounted on the two second profile frames.

7. The cell inkjet printing apparatus according to claim 6, characterized in that, The pre-curing component includes a strip UV lamp holder mounted on a second profile frame, on which a strip UV lamp is mounted.

8. The cell inkjet printing apparatus according to claim 6, characterized in that, The final curing assembly includes a curing substrate mounted on a second profile frame, and two parallel curing guide rails are mounted on the side of the curing substrate away from the second profile frame. Both curing guide rails are slidably connected to one side of the curing slide. A motor support is mounted on the curing substrate, and a curing servo motor is mounted on the motor support. A curing screw is mounted on the output end of the curing servo motor, and a curing screw fixing seat connected to the curing substrate is threaded on the outer peripheral surface of the curing screw.

9. The cell inkjet printing apparatus according to claim 8, characterized in that, A position sensor is mounted on the cured substrate.

10. The cell inkjet printing apparatus according to claim 9, characterized in that, A conformal UV lamp holder is installed on the curing slide, and a conformal UV lamp is installed on the conformal UV lamp holder.

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