Printing head and feeding mechanism
By integrating a vibration motor and an eccentric printhead design, the problems of slurry uniformity and clogging in the wet molding of all-solid-state lithium batteries were solved, achieving uniform coating and dense molding of the slurry and improving the molding quality of the electrode sheets.
Patent Information
- Application Number
- CN202520248723.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-14
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-02-14
AI Technical Summary
In the fabrication process of all-solid-state lithium batteries, the wet molding of the positive electrode and the all-solid-state electrolyte membrane presents challenges in controlling the uniformity of the slurry and improving its density. Furthermore, slurry adhesion or blockage can easily occur during the printing process.
Design a printhead that integrates a vibration motor and an eccentric structure. The vibration motor drives the eccentric structure to rotate, thereby vibrating the printhead, improving the uniformity of slurry formation and reducing clogging. A separate feeder is used to connect the printhead and the feeder via a hose to buffer the vibration.
It improves the uniformity and density of the slurry formation, reduces slurry clogging at the printhead nozzles, prevents slurry from adhering to the walls, and improves the uniformity of electrode formation and the density of its internal structure.
Smart Images
Figure CN223644284U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery technology, and in particular to a printhead and a feeding mechanism. Background Technology
[0002] Solid-state batteries, with their advantages of high energy density, long cycle life, high safety, simple battery system design, and strong scalability in battery form factor, overcome the shortcomings of traditional liquid batteries and have the potential to become the mainstream technology in the battery industry in the future. In the fabrication process of solid-state lithium batteries, material forming and densification are crucial steps. Among these, there are two forming technologies for the positive electrode sheet and the solid-state electrolyte membrane: dry and wet methods. Wet forming has advantages in terms of forming quality, efficiency, and cost.
[0003] Wet molding uses a slurry as the material, and common molding methods include coating and 3D printing. Among these, 3D printing is a molding method that has emerged in recent years. Its advantage is that it can achieve both planar molding and complex three-dimensional curved surface molding. Utility Model Content
[0004] In the wet molding process of positive electrode sheets and all-solid electrolyte membranes, controlling material uniformity and improving density face significant challenges. Furthermore, during printing, the slurry easily adheres to the printing plates or clogs the printhead. To overcome these shortcomings, the present invention aims to provide a printhead and feeding mechanism that improves the uniformity of slurry molding, reduces slurry clogging at the printhead nozzles, and prevents slurry adhesion to the printing plates.
[0005] The objective of this utility model is achieved through the following technical solution:
[0006] A printhead includes a printhead body, a base, a vibration motor, and an eccentric structure. The printhead body and the vibration motor are both mounted on the base. The eccentric structure is mounted on the output shaft of the vibration motor. The vibration motor drives the eccentric structure to rotate, thereby causing the base to vibrate, which in turn causes the printhead body to vibrate.
[0007] In one embodiment, the eccentric structure is an eccentric wheel or an eccentric block.
[0008] In one embodiment, the base includes a first body and a second body, and the printhead body is sandwiched between the first body and the second body. The first body and the second body are detachably connected by a connecting structure.
[0009] In one embodiment, along the thickness direction of the base, the first body has a first groove penetrating the first body, and the second body has a second groove penetrating the second body. When the first body and the second body are connected, the first groove and the second groove merge into a mounting groove, and the printhead body is installed in the mounting groove.
[0010] In one embodiment, the connecting structure is a threaded rod. The first body has a through hole, and the second body has a threaded hole at a position corresponding to the through hole. One end of the threaded rod passes through the through hole and is threadedly connected to the threaded hole.
[0011] In one embodiment, the base has a motor mounting hole, the vibration motor is installed in the motor mounting hole, and the output shaft of the vibration motor passes through the base and is connected to the eccentric structure.
[0012] In one embodiment, a fixing structure is provided on the base, the fixing structure being used to fix the vibration motor in the motor mounting hole.
[0013] In one embodiment, the fixing structure includes a locking block and at least one locking bolt. A placement groove is provided on the inner wall of one side of the motor mounting hole. The locking block is installed in the placement groove and is adjacent to the vibration motor. The base has at least one threaded hole communicating with the placement groove. One end of the locking bolt passes through the threaded hole and abuts against the locking block.
[0014] This utility model also provides a feeding mechanism, including a feeder and a print head as described above. The feeder is separately disposed from the print head body, and the feeder and the print head body are connected by a flexible hose.
[0015] In one embodiment, a mounting bracket is also included, on which the feeder is mounted.
[0016] The beneficial effects of this utility model are as follows: the printhead body and the vibration motor are both integrated and installed on the base, resulting in a compact structure; the vibration motor directly drives the eccentric structure to rotate, thereby causing the base to vibrate, which in turn drives the printhead body to vibrate. During the coating process, the vibration of the printhead body causes the material to vibrate while being coated, improving the uniformity of the slurry formation and promoting the sedimentation of solid particles in the slurry to increase the density of the formation, thereby improving the uniformity of the electrode formation and increasing the density of the internal structure of the electrode; at the same time, the high-frequency vibration reduces the slurry blockage at the nozzle of the printhead body, preventing slurry from adhering to the wall. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the structure of a printhead according to an embodiment of the present invention;
[0019] Figure 2 yes Figure 1 A structural diagram from another perspective;
[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the second main body;
[0021] Figure 4 This is a schematic diagram of the material feeding mechanism.
[0022] In the diagram: 100, Printhead; 1, Printhead Body; 2, Base; 21, First Main Body; 22, Second Main Body; 23, Motor Mounting Hole; 24, Fixing Structure; 241, Locking Block; 242, Locking Bolt; 25, Placement Slot; 26, Threaded Rod; 27, Mounting Slot; 3, Vibration Motor; 4, Eccentric Structure; 5, Feeder; 6, Hose; 7, Connecting Plate; 8, Mounting Frame. Detailed Implementation
[0023] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.
[0024] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.
[0025] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0026] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.
[0027] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.
[0028] This utility model provides a printhead 100, such as Figures 1 to 3 As shown, it includes a printhead body 1, a base 2, a vibration motor 3, and an eccentric structure 4. The printhead body 1 and the vibration motor 3 are both mounted on the base 2. The eccentric structure 4 is mounted on the output shaft of the vibration motor 3. The vibration motor 3 drives the eccentric structure 4 to rotate, thereby causing the base 2 to vibrate, which in turn causes the printhead body 1 to vibrate.
[0029] In this embodiment, both the printhead body 1 and the vibration motor 3 are integrated and mounted on the base 2, resulting in a compact structure. The vibration motor 3 directly drives the eccentric structure 4 to rotate, thereby causing the base 2 to vibrate. This, in turn, causes the printhead body 1 on the base 2 to vibrate. The vibration of the printhead body 1 during the coating process causes the material to vibrate while being coated, improving the uniformity of the slurry formation and promoting the sedimentation of solid particles in the slurry to increase the density of the formed material. This improves the uniformity of the electrode forming and enhances the density of the internal structure of the electrode. At the same time, the high-frequency vibration reduces the slurry blockage at the nozzle of the printhead body 1, preventing slurry from adhering to the wall.
[0030] In one implementation, the eccentric structure 4 is an eccentric wheel or an eccentric block.
[0031] As one implementation method, such as Figure 1 and Figure 2 As shown, the base 2 includes a first body 21 and a second body 22, and the printhead body 1 is sandwiched between the first body 21 and the second body 22. The first body 21 and the second body 22 are detachably connected by a connecting structure. In this embodiment, by setting the base 2 as two detachable parts, including the first body 21 and the second body 22, it is more convenient to fix and install the printhead body 1.
[0032] Along the thickness direction T of the base 2, a first groove is provided on the first body 21, and a second groove is provided on the second body 22, which in turn passes through the second body 22. When the first body 21 and the second body 22 are connected, the first groove and the second groove merge into a mounting groove 27, and the print head body 1 is installed in the mounting groove 27.
[0033] As one implementation method, such as Figure 1 and Figure 2 As shown, along the thickness direction T of the base 2, a first groove penetrating the first body 21 is formed on the first body 21, and a second groove penetrating the second body 22 is formed on the second body 22. When the first body 21 and the second body 22 are connected, the first groove and the second groove merge into a mounting groove 27, and the printhead body 1 is installed in the mounting groove 27. Specifically, when the printhead body 1 is cylindrical, the first groove and the second groove can be set as semi-circular grooves according to the shape of the printhead body 1, and the mounting groove 27 formed by the merging of the two semi-circular grooves is a circular groove; of course, the printhead body can also be set as a cuboid, and the shape of the mounting groove 27 is also set as a cuboid accordingly; here, no limitation is made.
[0034] As one implementation method, such as Figure 1 As shown, the connecting structure is a threaded rod 26. A through hole (not shown) is provided on the first body 21, and a threaded hole (not shown) is provided on the second body 22 at a position corresponding to the through hole. One end of the threaded rod 26 passes through the through hole and is threadedly connected to the threaded hole, thereby fixing the first body 21 and the second body 22. Alternatively, one end of the first body 21 and the second body 22 are a flexible connection (deformable), and the other end of the first body 21 and the second body 22 are fixed by the threaded rod 26; or one end of the first body 21 and the second body 22 are connected by a hinge, and the other end of the first body 21 and the second body 22 are fixed by the threaded rod 26; or both ends of the first body 21 and the second body 22 are fixed by the threaded rod 26.
[0035] As one implementation method, such as Figure 1 and Figure 3 As shown, the base 2 has a motor mounting hole 23, and the vibration motor 3 is installed in the motor mounting hole 23. The output shaft of the vibration motor 3 passes through the base 2 and is connected to the eccentric structure 4. Alternatively, the motor mounting hole 23 can be provided on the second main body 22, and the output shaft of the vibration motor 3 passes through the second main body 22 and is connected to the eccentric structure 4.
[0036] As one implementation method, such as Figure 1 and Figure 3 As shown, a fixing structure 24 is provided on the base 2, which is used to fix the vibration motor 3 in the motor mounting hole 23. When the motor mounting hole 23 is provided on the second body 22, the fixing structure 24 is provided on the second body 22.
[0037] As one implementation method, such as Figure 1 and Figure 3 As shown, the fixing structure 24 includes a locking block 241 and at least one locking bolt 242. A placement groove 25 is provided on the inner wall of one side of the motor mounting hole 23. The locking block 241 is installed in the placement groove 25 and adjacent to the vibrating motor 3. The base 2 has at least one threaded hole (not shown) communicating with the placement groove 25. One end of the locking bolt 242 passes through the threaded hole and abuts against the locking block 241. Specifically, the fixing structure 24 is disposed on the second body 22. Multiple threaded holes communicating with the placement groove 25 are provided on one side of the second body 22. Multiple locking bolts 242 pass through the threaded holes one-to-one and abut against the locking block 241. By rotating the locking bolts 242, the locking bolts 242 press against the locking block 241, thereby causing the locking block 241 to press against the vibrating motor 3, achieving the effect of fixing the vibrating motor 3. Multiple locking bolts 242 can more stably fix the vibrating motor 3.
[0038] This utility model also provides a feeding mechanism, such as Figure 4 As shown, the device includes a feeder 5 and a printhead 100 as described above. The feeder 5 is separately disposed from the printhead body 1, and the feeder 5 and the printhead body 1 are connected by a flexible hose 6. In this embodiment, the feeder 5 is separately disposed from the printhead body 1 and connected by a flexible hose 6 to prevent the vibration of the printhead body 1 from causing the feeder 5 to vibrate; the flexible hose 6 can further buffer the vibration effect.
[0039] As one implementation method, such as Figure 4 As shown, it also includes a mounting bracket 8, on which the feeder 5 is mounted.
[0040] The working process of this utility model specifically includes: During operation, the feeder 5 pushes the slurry in the syringe through the hose 6 into the print head body 1 for extrusion printing. The print head 100 can be fixed to the connecting plate 7 by bolts, and the connecting plate 7 is then fixed to the lifting platform (not shown) and moves up and down with the platform. During the printing process, the high-frequency vibration motor 3 is synchronized with the stepper motor of the feeder 5, and the material is vibrated simultaneously during extrusion, and the vibration frequency is adjustable.
[0041] Among them, such as Figure 4 As shown, a print head 100 is connected to a feeder 5, and the print head 100 is connected to the connecting plate 7 through a buffer column; when the print head 100 vibrates, the buffer column can deform.
[0042] In this invention, both the printhead body 1 and the vibration motor 3 are integrated and mounted on the base 2, resulting in a compact structure. The vibration motor 3 directly drives the eccentric structure 4 to rotate, thereby causing the base 2 to vibrate, which in turn causes the printhead body 1 to vibrate. During the coating process, the vibration of the printhead body 1 causes the material to vibrate while being coated, improving the uniformity of the slurry formation and promoting the sedimentation of solid particles in the slurry to increase the density of the formed material. This improves the uniformity of the electrode forming and enhances the density of the internal structure of the electrode. At the same time, the high-frequency vibration reduces the slurry blockage at the nozzle of the printhead body 1, preventing slurry from adhering to the wall.
[0043] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content without departing from the scope of the present utility model's technical solution. These are equivalent embodiments with equivalent changes. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model's technical solution shall still fall within the protection scope of the present utility model's technical solution.
Claims
1. A printhead, characterized in that, The device includes a printhead body (1), a base (2), a vibration motor (3), and an eccentric structure (4). The printhead body (1) and the vibration motor (3) are both mounted on the base (2). The eccentric structure (4) is mounted on the output shaft of the vibration motor (3). The vibration motor (3) drives the eccentric structure (4) to rotate, thereby causing the base (2) to vibrate, which in turn causes the printhead body (1) to vibrate.
2. The printhead as described in claim 1, characterized in that, The eccentric structure (4) is an eccentric wheel or an eccentric block.
3. The printhead as described in claim 1, characterized in that, The base (2) includes a first body (21) and a second body (22), and the print head body (1) is sandwiched between the first body (21) and the second body (22). The first body (21) and the second body (22) are detachably connected by a connecting structure.
4. The printhead as described in claim 3, characterized in that, Along the thickness direction (T) of the base (2), the first body (21) has a first groove that penetrates the first body (21), and the second body (22) has a second groove that penetrates the second body (22). When the first body (21) and the second body (22) are connected, the first groove and the second groove are combined into a mounting groove (27), and the print head body (1) is installed in the mounting groove (27).
5. The printhead as described in claim 3, characterized in that, The connection structure is a threaded rod (26). The first body (21) has a through hole, and the second body (22) has a threaded hole at a position corresponding to the through hole. One end of the threaded rod (26) passes through the through hole and is threadedly connected to the threaded hole.
6. The printhead as described in claim 1, characterized in that, The base (2) has a motor mounting hole (23), the vibration motor (3) is installed in the motor mounting hole (23), and the output shaft of the vibration motor (3) passes through the base (2) and is connected to the eccentric structure (4).
7. The printhead as described in claim 6, characterized in that, The base (2) is provided with a fixing structure (24), which is used to fix the vibration motor (3) in the motor mounting hole (23).
8. The printhead as described in claim 7, characterized in that, The fixing structure (24) includes a locking block (241) and at least one locking bolt (242). A placement groove (25) is provided on the inner wall of one side of the motor mounting hole (23). The locking block (241) is installed in the placement groove (25) and is adjacent to the vibration motor (3). The base (2) has at least one threaded hole communicating with the placement groove (25). One end of the locking bolt (242) passes through the threaded hole and abuts against the locking block (241).
9. A feeding mechanism, characterized in that, Includes a feeder (5) and a printhead (100) as described in any one of claims 1-8, wherein the feeder (5) is separately disposed from the printhead body (1) and the feeder (5) is connected to the printhead body (1) via a hose (6).
10. The feeding mechanism as described in claim 9, characterized in that, It also includes a mounting bracket (8), on which the feeder (5) is mounted.