Ceramic coating gasket structure
By introducing a buffer cavity and an inner 8-shaped nozzle design into the ceramic coating die head, the problems of unstable coating and wavy edges are solved, a more stable coating effect is achieved, and the safety of the battery cell is improved.
Patent Information
- Application Number
- CN202422003484.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-19
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-08-19
AI Technical Summary
During the coating process, existing ceramic coating die heads are prone to wave edges of ceramic coating, and the coating is unstable, resulting in a reduction in cell safety.
A ceramic coating gasket structure is designed, including a buffer cavity, a slurry passage deviating from the center and an inner eight-shaped nozzle. By buffering the slurry pressure through the buffer cavity, the slurry flow path is adjusted, and the nozzle shape is improved to stabilize the coating.
It effectively avoids coating instability and wavy edges of ceramic coating edges, and improves the stability of coating and the safety of the battery cell.
Smart Images
Figure CN223145136U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pole piece coating, and more specifically to a ceramic coating gasket structure. Background Art
[0002] At present, some battery manufacturers will apply a ceramic coating with a width of about 5 mm at the edge of the positive electrode coating of the pole piece to increase the safety of the battery cell. The gasket used for coating adopts a slit nozzle and cavity extrusion mode. Since the ceramic coating die head has no buffer cavity, after the slurry enters from the middle of the cavity, the pressure inside the cavity is relatively large. Without special design of the nozzle shape, the phenomenon of wavy edges will occur at the edge of the ceramic coating when it is directly ejected from the nozzle. To solve this problem, a ceramic coating gasket is designed. Summary of the Utility Model
[0003] The purpose of the utility model is to provide a ceramic coating gasket structure for the deficiencies of the existing technology. By setting a buffer cavity, it is possible to avoid excessive pressure of the ceramic slurry, resulting in unstable coating. The slurry passage is set to deviate from the vertical center position of the gasket, increasing the slurry outflow distance and the slurry stability. The slurry nozzle is set in an inner bevel shape. After the ceramic slurry is ejected, the outward expansion phenomenon is improved, and the phenomenon of wavy edges at the edge of the ceramic coating disappears.
[0004] The technical solution of the utility model is as follows:
[0005] A ceramic coating gasket structure includes a gasket body. A slurry inlet is provided on the gasket body, a buffer cavity is provided on the slurry inlet, a slurry passage is provided on the slurry inlet and the buffer cavity, and a nozzle is provided on the slurry passage. The buffer cavity is used to buffer the slurry when it flows out from the slurry inlet.
[0006] As a preference, the width of the buffer cavity is 2.5 times the width of the slurry inlet and the width of the buffer cavity is the same as the width of the slurry passage.
[0007] As a preference, chamfers are provided on both the slurry inlet and the buffer cavity.
[0008] As a preference, the slurry passage is set to deviate from the vertical center position of the gasket body.
[0009] As a preference, the nozzle is set in an inner bevel structure and a stop angle is provided on the nozzle.
[0010] As a preference, a plurality of screw fixing holes are provided on the gasket body.
[0011] The beneficial effect of the utility model lies in
[0012] 1. The utility model is provided with a buffer cavity to avoid unstable coating caused by excessive pressure of the ceramic slurry. By modifying the position of the slurry passage to deviate from the vertical center of the gasket, the distance of the slurry outflow is increased, the stability of the slurry is increased, and the internal pressure of the cavity after the slurry enters from the middle of the cavity is artificially stabilized. In addition, the nozzle is designed with an inner V shape. After the ceramic slurry is ejected, the outward expansion phenomenon is improved, and the phenomenon of wavy edges at the edge of the ceramic coating is effectively improved.
[0013] In summary, the utility model has the advantages of good coating effect and strong practicability, and is suitable for the field of pole piece coating technology. Brief Description of the Drawings
[0014] The following further describes the present utility model with reference to the drawings:
[0015] Figure 1 It is a structural schematic diagram of the gasket main body;
[0016] Figure 2 It is a structural schematic diagram of the slurry inlet, buffer cavity, slurry passage and nozzle;
[0017] Figure 3 For Figure 2 The enlarged view at A in
[0018] Reference numerals: 1 gasket main body, 2 slurry inlet, 3 buffer cavity, 4 slurry passage, 5 nozzle, 6 guide angle, 7 stop angle, 8 screw fixing hole. Detailed Description of the Embodiment
[0019] The following clearly and completely describes the technical solutions in the embodiments of the present utility model with reference to the drawings.
[0020] Embodiment 1
[0021] The following details the embodiments of the present utility model. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model.
[0022] As Figures 1 to 3 shown, a ceramic coating gasket structure includes a gasket main body 1. A slurry inlet 2 is provided on the gasket main body 1. A buffer cavity 3 is provided on the slurry inlet 2. A slurry passage 4 is provided between the slurry inlet 2 and the buffer cavity 3. A nozzle 5 is provided on the slurry passage 4. The buffer cavity 3 is used to buffer the slurry when it flows out of the slurry inlet 2.
[0023] As Figure 2As shown, the width of the buffer chamber 3 is 2.5 times the width of the slurry inlet 2 and the width of the buffer chamber 3 is the same as the width of the slurry aisle 4. The slurry inlet 2 protrudes from the slurry aisle 4. After the slurry enters from the slurry inlet 2, it is buffered in the buffer chamber 3 to avoid excessive slurry pressure, which may cause unstable coating. Subsequently, it passes through the slurry aisle 4 and is ejected from the nozzle 5.
[0024] As Figure 1 shown, guide angles 6 are provided on both the slurry inlet 2 and the buffer chamber 3. By providing the guide angles 6, the contact area between the slurry and the slurry inlet 2 and the buffer chamber 3 is increased, making the buffering effect better.
[0025] As Figure 2 shown, the slurry aisle 4 is set to deviate from the vertical center position of the gasket body 1, increasing the slurry outflow distance and the slurry stability, and artificially stabilizing the internal pressure of the cavity after the slurry enters from the middle of the cavity.
[0026] As Figure 3 shown, the nozzle 5 is set in an inward-facing V-shaped structure and a stop angle 7 is provided on the nozzle 5. By the inward-facing V-shaped structure and the provided stop angle 7, the phenomenon of outward expansion and wavy edges of the coating is improved when the slurry is ejected.
[0027] As Figure 1 shown, a number of screw fixing holes 8 are provided on the gasket body 1 to facilitate fixing with the upper die and the lower die.
[0028] Working process
[0029] After the slurry enters from the slurry inlet 2, it is buffered in the buffer chamber 3 to avoid excessive slurry pressure, which may cause unstable coating. Subsequently, it passes through the slurry aisle 4 and is ejected from the nozzle 5. By providing the guide angles 6, the contact area between the slurry and the slurry inlet 2 and the buffer chamber 3 is increased, making the buffering effect better. It deviates from the vertical center position of the gasket body 1, increasing the slurry outflow distance and the slurry stability, and artificially stabilizing the internal pressure of the cavity after the slurry enters from the middle of the cavity. By the inward-facing V-shaped structure and the provided stop angle 7, the phenomenon of outward expansion and wavy edges of the coating is improved when the slurry is ejected.
[0030] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "front and back", "left and right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.
[0031] Certainly, in the present technical solution, those skilled in the art should understand that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of the element can be multiple. The term "a" cannot be understood as a limitation on the quantity.
[0032] The above-described in conjunction with the accompanying drawings is only the preferred embodiment of the present utility model, but the present utility model is not limited to the above embodiment. It should be noted that for those skilled in the art, without departing from the structure of the present utility model, various deformations and improvements can be made, which should also be regarded as the protection scope of the present utility model and will not affect the implementation effect and practicability of the present utility model.
Claims
1. A ceramic-coated gasket structure, comprising a gasket body (1), characterized in that: A slurry inlet (2) is provided on the gasket body (1). A buffer chamber (3) is provided on the slurry inlet (2). A slurry passageway (4) is provided between the slurry inlet (2) and the buffer chamber (3). A nozzle (5) is provided on the slurry passageway (4). The buffer chamber (3) is used to buffer the slurry when it flows out of the slurry inlet (2).
2. The ceramic coating gasket structure according to claim 1, characterized in that: The width of the buffer chamber (3) is 2.5 times the width of the slurry inlet (2), and the width of the buffer chamber (3) is the same as the width of the slurry passageway (4).
3. A ceramic coating gasket structure according to claim 1, characterized in that: Guide angles (6) are provided on both the slurry inlet (2) and the buffer chamber (3).
4. A ceramic coated gasket structure according to claim 1, characterized in that: The slurry passageway (4) is arranged to deviate from the vertical center position of the gasket body (1).
5. A ceramic coating gasket structure according to claim 1, characterized in that: The nozzle (5) is arranged in an inward V-shaped structure, and a stop angle (7) is provided on the nozzle (5).
6. A ceramic-coated gasket structure according to claim 1, characterized in that: A number of screw fixing holes (8) are provided on the gasket body (1).