Coating gasket and coating machine
By setting an adjustment structure on the coated gasket, adjusting the length and diversion groove width, the universality problem of fixing the specifications of the existing coated gasket is solved, and the coating of die heads and poles of different specifications is realized, reducing the Cost and improve coating quality.
Patent Information
- Application Number
- CN202420236858.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-31
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-01-31
AI Technical Summary
The size and specifications of existing coated gaskets are fixed, resulting in the need to replace coated gaskets of different specifications when producing lithium-ion cells of different specifications, which is poor in versatility.
A coating gasket is designed, including the main and side-shift flow sections, and an adjustment structure is provided to adjust the length and the notch width of the flow guide groove to adapt to the coating die head and pole sheet width of different specifications.
Improves the versatility of coated gaskets, reduces the need to replace gaskets of different specifications, reduces production costs, and ensures uniformity of coating runners and coating quality.
Smart Images
Figure CN222174647U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coating equipment, in particular to a coating gasket and a coating machine. Background Art
[0002] The manufacturing process of lithium-ion batteries mainly includes slurry preparation, slurry coating, drying, cutting, winding, packaging and other processes. Among them, slurry coating is an important process in the production of lithium-ion batteries, and its main purpose is to evenly coat the slurry on the positive and negative electrodes of the battery. There are many ways to coat the slurry, one of which is slit extrusion coating, that is, the slurry is squeezed out from the slit of the coating die and coated on the battery electrode. The coating die generally includes an upper die and a lower die, and a coating gasket is provided between the upper die and the lower die to form a slit for the slurry to flow out.
[0003] In order to produce batteries of different specifications, coating dies of different specifications are required. Figure 1 As shown, the size specifications of existing coating gaskets are generally fixed, resulting in the need to replace coating gaskets of different specifications when producing battery cells of different specifications, which has poor versatility. Utility Model Content
[0004] The main purpose of the utility model is to provide a coating gasket to improve the versatility of the coating gasket and realize that the coating gasket is compatible with coating dies of different specifications.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:
[0006] A coated gasket, comprising:
[0007] Main flow blocking section;
[0008] Two side flow blocking sections extend in the same direction from two ends of the main flow blocking section respectively, and the outer ends of the two side flow blocking sections are bent toward each other to form a guide groove;
[0009] The main flow blocking section and the side flow blocking section are provided with adjustment structures for adjusting the lengths of the main flow blocking section and the side flow blocking section.
[0010] In some embodiments, the adjustment structure includes an adjustment sheet and a slide groove, and the adjustment sheet is used to slide in the slide groove to adjust the length of the main flow blocking section or the side flow blocking section.
[0011] In some embodiments, the adjustment structure includes an adjustment buckle and a plurality of slots, and the adjustment buckle is used to be selectively buckled into one of the slots to adjust the length of the main flow blocking section or the side flow blocking section.
[0012] In some embodiments, the side flow blocking section includes a connecting section and an extending section, the connecting section is connected to the main flow blocking section, and the extending section extends from an end of the connecting section toward the other side flow blocking section.
[0013] In some embodiments, the outer ends of the two extension sections form the guide groove, and the adjustment structure is provided on the two extension sections for adjusting the slot width of the guide groove.
[0014] In some embodiments, the connecting section is perpendicular to the main flow blocking section, and the extending section is parallel to the main flow blocking section.
[0015] In some embodiments, the two side flow blocking sections are symmetrically arranged at two ends of the main flow blocking section.
[0016] In some embodiments, the coating gasket further comprises a plurality of mounting holes, and the plurality of mounting holes are arranged on the main flow blocking section and the two side flow blocking sections.
[0017] In some embodiments, the mounting hole is an elongated circular hole.
[0018] The embodiment of the utility model further provides a coating machine, which includes the coating gasket as described in the above embodiment.
[0019] In the technical solution of the utility model, the main baffle section and the two side baffle sections are provided with an adjustment structure, and the adjustment structure can adjust the length of the main baffle section and the two side baffle sections, thereby adjusting the size specifications of the coating gasket to adapt to the assembly of coating die heads of different specifications, thereby improving versatility. At the same time, the adjustment structure can adjust the length of the main baffle section, thereby adjusting the notch width of the guide groove, and can be suitable for the coating of pole pieces of different widths. When pole pieces of different widths need to be coated, there is no need to replace coating gaskets of different specifications, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a structural schematic diagram of a coating gasket in the prior art;
[0021] Figure 2 This is a schematic diagram of the structure of a coating gasket in one embodiment of the utility model;
[0022] Figure 3 It is a schematic diagram of the structural decomposition of the adjustment structure in one embodiment of the utility model.
[0023] Description of Figure Numbers
[0024]
[0025]
[0026] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0027] In the present invention, the terms "disposed", "provided with", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0028] The orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or position relationship shown in the drawings and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0030] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.
[0031] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0032] The embodiment of the utility model provides a coating gasket that is compatible with coating dies of different specifications, thereby improving versatility.
[0033] Figure 2Schematic diagram of the structure of the coating gasket in this embodiment. Figure 2 As shown, the coating gasket of this embodiment includes a main baffle section 1 and two side baffle sections 2, the two side baffle sections 2 extend in the same direction from both ends of the main baffle section 1 respectively, and the outer ends of the two side baffle sections 2 are bent toward each other to form a guide groove 10; the main baffle section 1 and the two side baffle sections 2 are provided with an adjustment structure 3 for adjusting the length of the main baffle section 1 and the side baffle section 2.
[0034] In this embodiment, the coating gasket is used in the coating process of the lithium battery and is a component used to control the shape of the coating flow channel. The coating gasket can be made of stainless steel or other metal materials. The coating gasket is assembled between the coating upper die head and the lower die head to form a slit between the upper die head and the lower die head. The slurry flows out of the slit under the action of external pressure and covers the surface of the lithium battery pole piece, thereby coating the pole piece.
[0035] The coating gasket of this embodiment includes a main baffle section 1 and two side baffle sections 2, the two side baffle sections 2 extend from both ends of the main baffle section 1 in the same direction, and each side baffle section 2 is arranged at an angle to the main baffle section 1. Exemplarily, the two side baffle sections 2 are perpendicular to the main baffle section 1. The outer ends of the two side baffle sections 2 are bent toward each other, and a guide groove 10 is formed in the lateral spacing area between the bent parts, and the notch width of the guide groove 10 is the opening length of the coating die slit.
[0036] like Figure 1 As shown, in the prior art, the coating gasket is generally an integrally formed metal sheet with fixed size specifications. When a coating die head of different sizes needs to be assembled, the coating gasket of different sizes needs to be replaced, which has low versatility.
[0037] To this end, the coating gasket of this embodiment further includes an adjustment structure 3, which is used to adjust the size of the coating gasket to adapt to coating dies of various sizes. Specifically, the adjustment structure 3 is arranged on the main baffle section 1 and the two side baffle sections 2, and is used to adjust the length of the main baffle section 1 and the secondary baffle section. In one embodiment, as Figure 2 As shown, the adjustment structure 3 includes an adjustment sheet 31 and a slide groove 32. The adjustment sheet 31 is inserted into the slide groove 32, and the adjustment sheet 31 can slide in the slide groove 32, so as to adjust the length of the main flow blocking section 1 or the side flow blocking section 2. In another embodiment, as Figure 3As shown, the adjustment structure 3 includes an adjustment buckle 33 and a plurality of slots 34, wherein the plurality of slots 34 are arranged at intervals in a straight line, and the adjustment buckle 33 can be selectively buckled into one of the slots 34, thereby realizing the adjustment of the length of the main baffle section 1 or the side baffle section 2. It can be seen that the adjustment structure 3 of this embodiment can adjust the length of the main baffle section 1 and the two side baffle sections 2, thereby adjusting the size specifications of the coating gasket to adapt to the assembly of coating dies of different specifications, thereby improving versatility. At the same time, the adjustment structure 3 can adjust the notch width of the guide groove 10 by adjusting the length of the main baffle section 1, thereby being suitable for the coating of pole pieces of different widths. When pole pieces of different widths need to be coated, there is no need to replace coating gaskets of different specifications, thereby reducing production costs.
[0038] In some embodiments, the side flow blocking section 2 includes a connecting section 21 and an extending section 22 , the connecting section 21 is connected to the main flow blocking section 1 , and the extending section 22 extends from an end of the connecting section 21 toward the other side flow blocking section 2 .
[0039] In this embodiment, the side flow blocking section 2 includes a connecting section 21 and an extension section 22 arranged at an angle. For example, the connecting section 21 and the extension section 22 are arranged perpendicularly. The connecting section 21 is connected to the main flow blocking section 1. For example, the connecting section 21 and the main flow blocking section 1 are integrally formed. The two extension sections 22 extend toward each other.
[0040] In some embodiments, the outer ends of the two extension sections 22 form a guide groove 10 , and the adjustment structure 3 is disposed on the two extension sections 22 for adjusting the slot width of the guide groove 10 .
[0041] In this embodiment, the adjustment structure 3 is also used to adjust the slot width of the guide groove 10. Specifically, the slot width of the guide groove 10 is the distance between the outer ends of the two extension sections 22. The adjustment structure 3 is provided on the two extension sections 22, and the lengths of the two extension sections 22 can be adjusted by the adjustment structure 3, thereby adjusting the slot width of the guide groove 10, and then adjusting the opening length of the coating die slit to obtain coating strips of different widths on the battery pole piece. When pole pieces of different widths need to be coated, it is not necessary to replace coating gaskets of different specifications. It is only necessary to adjust the slot width of the guide groove 10 by adjusting the adjustment structure 3 to control the width of the pole piece coating strip, thereby improving versatility and reducing the purchase of coating gaskets of different specifications, thereby reducing costs.
[0042] In some embodiments, on the extension section 22, the adjustment sheet 31 and the slide groove 32 of the adjustment structure 3 are provided with scale lines, and the distance that the adjustment sheet 31 extends out of the slide groove 32 and the slot width of the guide groove 10 are determined according to the position of the scale lines on the adjustment sheet 31.
[0043] In some embodiments, the connecting section 21 is perpendicular to the main flow blocking section 1 , and the extending section 22 is parallel to the main flow blocking section 1 .
[0044] In this embodiment, the connecting section 21 is perpendicular to the main flow blocking section 1, and the extending section 22 is parallel to the main flow blocking section 1. Figure 1 In the embodiment, the main flow blocking section 1 and the two extension sections 22 are arranged in a horizontal direction, and the two connecting sections 21 are arranged in a vertical direction.
[0045] In some embodiments, the two side flow blocking sections 2 are symmetrically arranged at two ends of the main flow blocking section 1 .
[0046] In this embodiment, two side flow blocking sections 2 are symmetrically arranged at two ends of the main flow blocking section 1 , and form a U-shaped coating gasket with the main flow blocking section 1 .
[0047] In some embodiments, the coating gasket further includes a plurality of mounting holes 20 , and the plurality of mounting holes 20 are disposed on the main flow blocking section 1 and the flow blocking sections 2 on both sides.
[0048] The mounting holes 20 of this embodiment are used to mount the coating gasket on the coating die. Specifically, a plurality of mounting holes 20 are provided on the main baffle section 1 and the baffle sections 2 on both sides, and each baffle section can be provided with a plurality of mounting holes 20. The coating die includes an upper die head and a lower die head, and the upper die head and the lower die head are provided with screw holes that match the mounting holes 20 on the coating gasket, and the coating gasket disposed between the upper die head and the lower die head is clamped and fixed by screws.
[0049] In some embodiments, the mounting hole 20 is an elongated circular hole. In this embodiment, the mounting hole 20 is an elongated circular hole, and the elongated circular hole can provide a certain position adjustment margin. When installing the coating gasket, the installation position of the gasket can be adjusted through the elongated circular hole to improve compatibility.
[0050] In some embodiments, both sides of the coating pad are flat.
[0051] In this embodiment, the two surfaces of the main baffle section 1 and the two side baffle sections 2 are flush, so that the thickness of the entire coating gasket is uniform and consistent, ensuring that the slit gap formed by the upper die head and the lower die head clamping the coating gasket is uniform and consistent, so that the slurry flows out of the slit more evenly, ensuring the quality of the coating.
[0052] The embodiment of the utility model further provides a coating machine, which includes the coating gasket as described in the above embodiment.
[0053] The specific structure of the coating gasket refers to the above-mentioned embodiment. Since the coating machine adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the technical effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.
[0054] The above is only a specific implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.
Claims
1. A coated gasket, characterized in that: include: Main flow blocking section; Two side flow blocking sections extend in the same direction from two ends of the main flow blocking section respectively, and the outer ends of the two side flow blocking sections are bent toward each other to form a guide groove; The main flow blocking section and the side flow blocking section are provided with adjustment structures for adjusting the lengths of the main flow blocking section and the side flow blocking section.
2. The coated gasket according to claim 1, characterized in that: The adjustment structure comprises an adjustment sheet and a slide groove, wherein the adjustment sheet is used to slide in the slide groove to adjust the length of the main flow blocking section or the side flow blocking section.
3. The coated gasket according to claim 1, characterized in that: The adjustment structure comprises an adjustment buckle and a plurality of slots, wherein the adjustment buckle is used to be selectively buckled into one of the slots to adjust the length of the main flow blocking section or the side flow blocking section.
4. The coated gasket according to any one of claims 1 to 3, characterized in that: The side flow blocking section comprises a connecting section and an extending section, wherein the connecting section is connected to the main flow blocking section, and the extending section extends from an end of the connecting section toward the other side flow blocking section.
5. The coated gasket according to claim 4, characterized in that: The outer ends of the two extension sections form the guide groove, and the adjustment structure is arranged on the two extension sections and is used to adjust the slot width of the guide groove.
6. The coated gasket according to claim 4, characterized in that: The connecting section is perpendicular to the main flow blocking section, and the extending section is parallel to the main flow blocking section.
7. The coated gasket according to claim 1, characterized in that: The two side flow blocking sections are symmetrically arranged at two ends of the main flow blocking section.
8. The coated gasket according to claim 1, characterized in that: The coating gasket also includes a plurality of mounting holes, and the plurality of mounting holes are arranged on the main flow blocking section and the two side flow blocking sections.
9. The coated gasket according to claim 8, characterized in that: The mounting hole is an elongated circular hole.
10. A coating machine, characterized in that: Comprising a coated gasket as claimed in any one of claims 1 to 9.