Double-side coating composite die head device
By employing a double-sided coating composite die head device in lithium battery production, and utilizing a clamping structure and guiding components to stabilize the electrode substrate, the problem of poor coating alignment caused by substrate vibration in coating equipment is solved, thereby improving coating accuracy and quality while reducing processing costs.
Patent Information
- Application Number
- CN202520264694.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-02-19
AI Technical Summary
In existing lithium battery production, the misalignment of the coating mechanism in double-sided coating equipment causes substrate vibration, affecting the alignment and accuracy of the coating layer, and also increases processing costs.
A double-sided coating composite die head device is adopted. By setting up a clamping structure and a guiding component, the electrode substrate is kept stable during the coating process. The first and second coating structures are used to coat both sides of the electrode substrate simultaneously. The clamping component and the sub-clamping parts prevent vibration and ensure the accuracy and quality of the coating layer.
It improves the processing accuracy and quality of the coating layer on the AB side of the electrode, simplifies the adjustment operation, and reduces processing costs.
Smart Images
Figure CN223931807U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery manufacturing equipment technology, and in particular to a double-sided coating composite die head device. Background Technology
[0002] In lithium battery manufacturing, coating the battery electrode substrate is one of the key processes. The electrode substrate has two sides, A and B, both of which need to be coated during processing. Conventional coating equipment is divided into single-sided coating equipment and double-sided coating equipment. Single-sided coating equipment involves coating one side of the electrode substrate, then flipping the substrate over and coating it again. This type of coating requires an additional driving structure, takes longer to process, and has higher processing costs.
[0003] Conventional double-sided coating equipment uses two coating mechanisms to coat the electrode substrate on the A and B sides respectively in a staggered manner. However, because the two coating mechanisms are set up in a staggered manner and there is a gap between them and the electrode substrate, the pressure applied to different positions of the electrode substrate by the coating mechanism during the processing will cause the substrate to vibrate or even wrinkle. This will affect parameters such as the alignment, surface density and peel strength of the A and B sides of the electrode substrate, resulting in poor processing accuracy of the coating layer on the A and B sides of the electrode and unsatisfactory coating effect. Utility Model Content
[0004] The purpose of this application is to provide a double-sided coating composite die head device, which aims to improve the alignment accuracy of the coating layers on the AB sides of the electrode and improve the coating quality.
[0005] This application provides a double-sided coating composite die head device, including an inlet mechanism, an oven mechanism, and an outlet mechanism arranged sequentially, and a coating mechanism disposed between the inlet mechanism and the oven mechanism. The coating mechanism includes a first coating structure, a second coating structure, and a clamping structure, with the first coating structure and the second coating structure disposed opposite to each other. The clamping structure includes a first clamping component disposed on one side of the first coating structure and the second coating structure, and a second clamping component disposed on the other side of the first coating structure and the second coating structure. The first clamping component forms a first channel for passing through an electrode substrate, and the second clamping component forms a second channel for passing through an electrode substrate. The first channel and the second channel are aligned and parallel.
[0006] Furthermore, the first clamping assembly includes a first main clamping member and a second main clamping member, which are disposed opposite to each other; the first main clamping member is located on one side of the first coating structure, and the second main clamping member is located on one side of the second coating structure.
[0007] Furthermore, the second clamping assembly includes a first sub-clamping member and a second sub-clamping member, which are disposed opposite to each other; the first sub-clamping member is located on the other side of the first coating structure, and the second sub-clamping member is located on the other side of the second coating structure.
[0008] Furthermore, the first sub-clamping member includes a side clamping member and a middle clamping member, the side clamping member and the middle clamping member being arranged along the width direction of the electrode substrate; the second sub-clamping member corresponds one-to-one with the first sub-clamping member.
[0009] Furthermore, the first coating structure includes a first coating die; the second coating structure includes a second coating die and a guide assembly for driving the second coating die.
[0010] Furthermore, the position of the first coating die head is fixed, the guide assembly includes a drive component and a guide component, the second coating die head is disposed on the guide component, and the drive component is connected to the second coating die head.
[0011] Furthermore, the infeeding mechanism includes an infeeding roller, a coating infeeding roller, and a coating infeeding pressure roller, wherein the coating infeeding roller and the coating infeeding pressure roller are arranged opposite to each other.
[0012] Furthermore, the export mechanism includes an export roller, a baking export roller, and a baking export pressure roller, wherein the baking export roller and the baking export pressure roller are arranged opposite to each other.
[0013] The beneficial effects of this application are:
[0014] 1. This application discloses a double-sided coating composite die head device. By setting a clamping structure, the clamping structure uses a first clamping component and a second clamping component to form a channel for the electrode substrate. When coating is performed, the electrode substrate passing through the first channel and the second channel will be clamped. The clamped electrode substrate can remain stable due to the pressure. Since the first channel and the second channel are located on both sides of the first coating structure and the second coating structure, respectively, the electrode substrate can remain stable throughout the entire process from before coating to after coating. This prevents the coating area from shaking due to coating extrusion pressure or belt tension fluctuations, improves the processing accuracy of the coating layer on the AB side of the electrode, and ensures the coating quality.
[0015] 2. This application discloses a double-sided coating composite die head device. The first clamping member is provided with side clamping members and a middle clamping member. The second clamping member corresponds one-to-one with the first clamping member. The electrode substrate is clamped by the corresponding side clamping members and the middle clamping member. In addition to clamping the coating substrate, it can also avoid contact with the coated electrode substrate, thereby protecting the coated electrode substrate and ensuring the coating quality.
[0016] 3. This application discloses a double-sided coating composite die head device, which sets a first coating die head with a fixed position and a second coating die head using a guide component. During adjustment and maintenance, the second coating die head can be driven by the guide component to complete the adjustment. This can effectively simplify the operation and further ensure the accuracy while ensuring the alignment of the coating layers on the A and B sides of the substrate. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of a double-sided coating composite die head device provided in an embodiment of this application;
[0018] Figure 2 This is a front view of the coating mechanism in an embodiment of this application;
[0019] Figure 3 This is a side view of the coating mechanism in an embodiment of this application;
[0020] Figure 4 This is a bottom view of the clamping structure in an embodiment of this application;
[0021] Figure 5 This is a schematic diagram of the vertical arrangement of a double-sided coating composite die head device provided in the application embodiment;
[0022] Figure 6 This is another schematic diagram of the arrangement of a double-sided coating composite die head device provided in the application embodiment.
[0023] Explanation of reference numerals in the attached figures:
[0024] 1. Inlet mechanism; 11. Inlet roller; 12. Coating inlet roller; 13. Coating inlet pressure roller; 2. Oven mechanism; 3. Outlet mechanism; 31. Outlet roller; 32. Baking outlet roller; 33. Baking outlet pressure roller; 4. Coating mechanism; 41. First coating structure; 411. First coating die; 42. Second coating structure; 421. Second coating die; 422. Guide assembly; 4221. Drive component; 4222. Guide component; 43. Clamping structure; 431. First clamping assembly; 4311. First main clamping component; 4312. Second main clamping component; 432. Second clamping assembly; 4321. First sub-clamping component; 43211. Side clamping component; 43212. Middle clamping component; 4322. Second sub-clamping component. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.
[0026] It should be noted that although functional modules are divided in the device schematic diagram and a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flowchart. The terms "first," "second," etc., in the specification, claims, and the aforementioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.
[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.
[0028] Reference Figure 1 as well as Figure 2 This application provides a double-sided coating composite die head device, including an inlet mechanism 1, an oven mechanism 2, and an outlet mechanism 3 arranged sequentially, and a coating mechanism 4 disposed between the inlet mechanism 1 and the oven mechanism 2. When the double-sided coating composite die head device is in operation, the electrode substrate enters the coating mechanism 4 through the inlet mechanism 1 for coating. After coating, the electrode substrate is dried through the oven mechanism 2 and finally exits through the outlet mechanism 3.
[0029] Specifically, the infeeding mechanism 1 includes an infeeding roller 11, a coating infeeding roller 12, and a coating infeeding pressure roller 13. The coating infeeding roller 12 and the coating infeeding pressure roller 13 are arranged opposite to each other. The electrode substrate passes through the infeeding roller 11 and enters between the coating infeeding roller 12 and the coating infeeding pressure roller 13 under the action of the infeeding roller 11 while maintaining tension. Under the action of the coating infeeding pressure roller 13, the electrode substrate is tightly attached between the coating infeeding pressure roller 13 and the coating infeeding roller 12, and then enters the coating mechanism 4.
[0030] Reference Figure 3 as well as Figure 4 The coating mechanism 4 includes a first coating structure 41, a second coating structure 42, and a clamping structure 43. Specifically, the first coating structure 41 and the second coating structure 42 are arranged opposite to each other. The first coating structure 41 includes a first coating die 411, which is located on one side of the electrode substrate. The second coating structure 42 includes a second coating die 421 and a guide assembly 422 for driving the second coating die 421, which is located on the other side of the electrode substrate. By arranging the first coating die 411 and the second coating die 421 in this way, both sides of the electrode substrate can be coated simultaneously.
[0031] Furthermore, to facilitate adjustment of the first coating die 411 and the second coating die 421, in this embodiment, the position of the first coating die 411 is fixed. The guide assembly 422 includes a drive member 4221 and a guide member 4222. The second coating die 421 is disposed on the guide member 4222, and the drive member 4221 is connected to the second coating die 421. Specifically, the guide member 4222 can be a guide rail, and the drive member 4221 can be a cylinder or a lead screw motor. By setting the drive member 4221 and the guide member 4222, adjustment and maintenance can be completed simply by using the guide assembly 422 to drive the second coating die 421. This effectively simplifies the operation while ensuring the alignment of the coating layers on the A and B sides of the substrate, thereby guaranteeing positioning accuracy.
[0032] The clamping structure 43 includes a first clamping component 431 disposed on one side of the first coating structure 41 and the second coating structure 42, and a second clamping component 432 disposed on the other side of the first coating structure 41 and the second coating structure 42. The first clamping component 431 and the second clamping component 432 respectively fix and position the electrode substrate before and after coating. The first clamping component 431 forms a first channel for passing through the electrode substrate, and the second clamping component 432 forms a second channel for passing through the electrode substrate. The first channel and the second channel are aligned and parallel.
[0033] Specifically, the first clamping assembly 431 includes a first main clamping member 4311 and a second main clamping member 4312. The first main clamping member 4311 is located on one side of the first coating structure 41, and the second main clamping member 4312 is located on one side of the second coating structure 42, and the first main clamping member 4311 and the second main clamping member 4312 are arranged opposite to each other. The first main clamping member 4311 and the second main clamping member 4312 can be clamping rollers, clamping cylinders, or clamping wheels, as long as they can fix the electrode substrate.
[0034] Correspondingly, the second clamping assembly 432 includes a first sub-clamping member 4321 and a second sub-clamping member 4322, which are arranged opposite to each other. The first sub-clamping member 4321 is located on the other side of the first coating structure 41, and the second sub-clamping member 4322 is located on the other side of the second coating structure 42. Since the second clamping assembly 432 is used to clamp the coated electrode substrate, in order to avoid affecting the electrode substrate coated with slurry, the first sub-clamping member 4321 includes a side clamping member 43211 and a middle clamping member 43212, which are arranged along the width direction of the electrode substrate, and the second sub-clamping member 4322 corresponds one-to-one with the first sub-clamping member 4321. In this embodiment, the first clamping member 4321 has two side clamps 43211, located on opposite sides of the electrode substrate in the width direction, and one central clamp 43212, located in the middle of the electrode substrate in the width direction. The second clamping member 4322 is correspondingly disposed on the opposite side of the first clamping member 4321 to stabilize the electrode substrate. It can be understood that the number and position of the side clamps 43211 and the central clamp 43212 can be adjusted according to actual needs.
[0035] The drying oven mechanism 2 includes a coating oven. The electrode substrate coated by the coating mechanism 4 enters the coating oven for baking and drying. After baking and drying, the electrode substrate enters the exit mechanism 3. The exit mechanism 3 includes an exit roller 31, a baking exit roller 32, and a baking exit pressure roller 33. The baking exit roller 32 and the baking exit pressure roller 33 are arranged opposite to each other. Under the action of the baking exit pressure roller 33, the electrode substrate passes between the baking exit pressure roller 33 and the baking exit roller 32 and enters the exit roller 31. The exit roller 31 is used to maintain the tension of the electrode substrate. The electrode substrate is finally wound up or subjected to subsequent processing according to the process.
[0036] Reference Figure 5 as well as Figure 6 It should be noted that the positions of the infeeding mechanism 1, the drying oven mechanism 2, the export mechanism 3, and the coating mechanism 4 can be arranged horizontally or vertically, depending on the actual needs. Furthermore, the electrode substrate can be returned to the drying oven mechanism 2 via the export mechanism 3 for further drying; that is, the specific arrangement can be adjusted according to requirements and actual conditions.
[0037] Exemplary embodiments of this disclosure have been specifically shown and described above. It should be understood that this disclosure is not limited to the detailed structures, arrangements, or implementations described herein; rather, this disclosure is intended to cover various modifications and equivalent arrangements contained within the spirit and scope of the appended claims.
Claims
1. A double-sided coating composite die head device, comprising an inlet mechanism (1), an oven mechanism (2), and an outlet mechanism (3) arranged sequentially, characterized in that, It also includes a coating mechanism (4), which is disposed between the inlet mechanism (1) and the oven mechanism (2). The coating mechanism (4) includes a first coating structure (41), a second coating structure (42), and a clamping structure (43). The first coating structure (41) and the second coating structure (42) are disposed opposite to each other. The clamping structure (43) includes a first clamping component (431) disposed on one side of the first coating structure (41) and the second coating structure (42) and a second clamping component (432) disposed on the other side of the first coating structure (41) and the second coating structure (42). The first clamping component (431) forms a first channel for passing through the electrode substrate, and the second clamping component (432) forms a second channel for passing through the electrode substrate. The first channel and the second channel are aligned and parallel.
2. The double-sided coating composite die head device according to claim 1, characterized in that, The first clamping assembly (431) includes a first main clamping member (4311) and a second main clamping member (4312), which are disposed opposite to each other; the first main clamping member (4311) is located on one side of the first coating structure (41), and the second main clamping member (4312) is located on one side of the second coating structure (42).
3. The double-sided coating composite die head device according to claim 2, characterized in that, The second clamping assembly (432) includes a first sub-clamping member (4321) and a second sub-clamping member (4322), which are disposed opposite to each other; the first sub-clamping member (4321) is located on the other side of the first coating structure (41), and the second sub-clamping member (4322) is located on the other side of the second coating structure (42).
4. The double-sided coating composite die head device according to claim 3, characterized in that, The first sub-clamping member (4321) includes a side clamping member (43211) and a middle clamping member (43212), which are arranged along the width direction of the electrode substrate; the second sub-clamping member (4322) corresponds to the first sub-clamping member (4321).
5. A double-sided coating composite die head device according to any one of claims 1-4, characterized in that, The first coating structure (41) includes a first coating die (411); the second coating structure (42) includes a second coating die (421) and a guide assembly (422) for driving the second coating die (421).
6. The double-sided coating composite die head device according to claim 5, characterized in that, The first coating die (411) is fixed in position. The guide assembly (422) includes a drive member (4221) and a guide member (4222). The second coating die (421) is disposed on the guide member (4222), and the drive member (4221) is connected to the second coating die (421).
7. The double-sided coating composite die head device according to claim 1, characterized in that, The introductory mechanism (1) includes an introductory roller (11), a coating introductory roller (12), and a coating introductory pressure roller (13), with the coating introductory roller (12) and the coating introductory pressure roller (13) arranged opposite to each other.
8. The double-sided coating composite die head device according to claim 1, characterized in that, The export mechanism (3) includes an export roller (31), a baking export roller (32), and a baking export pressure roller (33), wherein the baking export roller (32) and the baking export pressure roller (33) are arranged opposite to each other.