A dust removal device for coated and dried electrode sheets
By setting up dust removal modules on both sides of the electrode and the substrate side, and combining vacuum adsorption and ultrasonic vibration technology, the problem that traditional dust removal devices cannot completely remove dust from both sides of the electrode is solved, thus improving the cleanliness of the electrode and the battery performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 国兴(东莞)新能源科技有限公司
- Filing Date
- 2025-08-08
- Publication Date
- 2026-07-03
Smart Images
Figure CN224443991U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of electrode manufacturing, and in particular to a dust removal device for electrode after coating and drying. Background Technology
[0002] In the electrode manufacturing industry, coating and drying are key processes that directly affect the flatness of the electrode, the uniformity of the coating, and the electrochemical performance of the battery. During the coating and drying process, dust is easily generated and adsorbed on the electrode surface due to contact with rollers and other operations. This residual dust will adversely affect subsequent processes such as winding, stacking, and coiling, thereby reducing battery performance. Therefore, effective dust removal from the electrode surface is a key step in ensuring electrode quality and battery performance.
[0003] In existing technologies, the industry mostly uses traditional negative pressure adsorption devices for electrode dust removal. However, traditional negative pressure adsorption devices have the following drawbacks in the electrode dust removal process: 1. Traditional dust removal mechanisms are usually only arranged on one side of the electrode to remove dust, resulting in incomplete removal of dust from the electrode surface and poor dust removal effect; 2. When the electrode is coated on one side, one side is the coating layer and the other side is the substrate. Due to the different physical properties of the two surfaces, their adsorption capacity for dust and dust removal requirements also differ. Traditional dust removal mechanisms are difficult to adapt to this material difference and cannot simultaneously meet the dust removal requirements on both sides of the electrode, thus failing to ensure the overall cleanliness of the electrode. Therefore, how to design a dust removal device for coated and dried electrodes to achieve efficient and adaptable dust removal function based on the characteristics of both sides of the electrode, and solve the problems of poor effect and insufficient adaptability of traditional dust removal mechanisms, is an urgent problem for enterprise technical personnel to solve. Utility Model Content
[0004] To address the shortcomings of the prior art, this application provides a dust removal device for coated and dried electrode sheets.
[0005] The above-mentioned inventive objective of this application is achieved through the following technical solutions:
[0006] A dust removal device for coated and dried electrode sheets includes:
[0007] The coating-side dust removal module is located on the coating side of the electrode and includes a first separation component and a first vacuum adsorption component. When the electrode is transported to the coating-side dust removal module after coating and drying, the first separation component is used to separate the surface dust on the coating side of the electrode, and the first vacuum adsorption component is used to adsorb the surface dust separated on the coating side of the electrode.
[0008] The substrate-side dust removal module is located on the coating side of the electrode and includes an ultrasonic generator, a second separation component, and a second vacuum adsorption component. When the electrode is transported to the substrate-side dust removal module after coating and drying, the ultrasonic generator generates high-intensity, high-frequency ultrasonic waves to the surface of the electrode substrate. The second separation component separates the surface dust on the electrode substrate and the second vacuum adsorption component adsorbs the separated surface dust on the electrode substrate.
[0009] Preferably, both the first separation component and the second separation component include an air compressor, a high-pressure chamber, and an oscillating element. The air compressor is connected to the high-pressure chamber, the oscillating element is installed in the high-pressure chamber and is used to drive the high-pressure chamber to oscillate. The high-pressure chamber has an air outlet on the side corresponding to the electrode coating or the substrate side.
[0010] Preferably, the angle between the outlet direction of the high-pressure chamber and the surface of the electrode is in the range of 30°-60°.
[0011] Preferably, both the first vacuum adsorption component and the second vacuum adsorption component include a vacuum pump and a vacuum chamber. The vacuum pump is connected to the vacuum chamber, and the vacuum chamber is located on one side of the first separation component or the second separation component and has an air intake hole.
[0012] Preferably, there are two vacuum chambers, which are symmetrically arranged on opposite sides of the first separation component or on opposite sides of the second separation component.
[0013] Preferably, the electrode dust removal device after coating and drying further includes two electrostatic eliminators, which are respectively installed in the coating-side dust removal module and the substrate-side dust removal module. The electrostatic eliminators are used to remove static electricity from the coating-side surface or the substrate-side surface of the electrode.
[0014] Preferably, the ultrasonic generator is turned off when both sides of the electrode are coated.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting up a coating-side dust removal module and a substrate-side dust removal module, during the coating, drying, and conveying process of the electrode sheet, the static electricity on the electrode sheet surface is first removed by electrostatic eliminators corresponding to both sides of the electrode sheet to reduce dust adsorption force; subsequently, the first separation component of the coating-side dust removal module separates the dust on the coating side surface of the electrode sheet, and then the first vacuum adsorption component adsorbs the separated dust; the substrate-side dust removal module first uses an ultrasonic generator to generate high-intensity, high-frequency ultrasonic waves to destroy the air critical layer on the substrate surface, and then the second separation component... The dust on the substrate side of the electrode is separated and adsorbed by the second vacuum adsorption component, forming a collaborative workflow of "static removal-separation-adsorption". On the one hand, the simultaneous dust removal by the dual-sided dust removal module solves the problem of incomplete dust removal by the traditional single-sided dust removal. On the other hand, for the material difference on both sides of the single-sided coated electrode, the ultrasonic generator achieves efficient separation of dust on the substrate side of the electrode. At the same time, the opening and closing of the ultrasonic generator is adapted to the double-sided coating scenario, thereby improving the dust removal efficiency on both sides of the electrode to ensure surface cleanliness and avoid damage to the electrode coating layer, thus improving the electrode production quality. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the coating-side dust removal module and the substrate-side dust removal module in this application working on the electrode coating and drying production line.
[0017] Figure 2 yes Figure 1 A magnified view of part A in the diagram.
[0018] Reference numerals: 1. Coating-side dust removal module; 2. Substrate-side dust removal module; 3. Electrode; 4. Drying equipment; 5. Winding equipment; 6. Ultrasonic generator; 7. High-pressure chamber; 8. Vacuum chamber; 9. Static eliminator. Detailed Implementation
[0019] The following description, in conjunction with the accompanying drawings, illustrates exemplary embodiments of this application, including various details to aid understanding. These should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this application. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.
[0020] It should be noted that the terms "first," "second," etc., used in this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this disclosure described herein can be implemented in orders other than those illustrated or described herein. The implementation methods described in the following exemplary embodiments do not represent all implementation methods consistent with this disclosure.
[0021] Furthermore, the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article, unless otherwise specified, generally indicates that the preceding and following related objects have an "or" relationship.
[0022] The following is a reference appendix. Figure 1 To be continued Figure 2 This application describes a dust removal device for coated and dried electrode sheets.
[0023] like Figure 1 and Figure 2 As shown, the electrode dust removal device after coating and drying includes a coating-side dust removal module 1 and a substrate-side dust removal module 2. The coating-side dust removal module 1 is located on the coating side of the electrode 3 and includes a first separation component and a first vacuum adsorption component. Specifically, both the coating-side dust removal module 1 and the substrate-side dust removal module 2 are located between the drying equipment 4 and the winding equipment 5. When the electrode 3 is conveyed to the coating-side dust removal module 1 after coating and drying, the first separation component is used to separate the surface dust on the coating side of the electrode 3, and the first vacuum adsorption component is used to adsorb the separated surface dust on the coating side of the electrode 3. The substrate-side dust removal module 2 is located on the coating side of the electrode 3 and includes an ultrasonic generator 6, a second separation component, and a second vacuum adsorption component. When the electrode 3 is conveyed to the substrate-side dust removal module 2 after coating and drying, the ultrasonic generator 6 is used to... High-intensity, high-frequency ultrasonic waves are generated to the substrate side surface of electrode 3. The second separation component is used to separate the surface dust on the substrate side of electrode 3, and the second vacuum adsorption component is used to adsorb the surface dust separated on the substrate side of electrode 3. Specifically, by setting a coating-side dust removal module 1 and a substrate-side dust removal module 2 on both sides of electrode 3, the dust on the coating side is separated by the first separation component and then adsorbed by the first vacuum adsorption component. On the substrate side, after pretreatment by the ultrasonic generator 6, the dust is separated by the second separation component and then adsorbed by the second vacuum adsorption component, forming a targeted dust removal process on both sides of electrode 3 to solve the problem of incomplete dust removal on one side in traditional methods. Furthermore, by adapting the ultrasonic generator 6 on the substrate side of electrode 3 to the material differences of the single-sided coated electrode 3, the comprehensive removal of dust on both sides of electrode 3 is achieved, improving dust removal efficiency and cleanliness.
[0024] It should be noted that when the substrate side of electrode 3, i.e. the uncoated surface, comes into contact with air, a relatively stable air boundary layer (air critical layer) will form on its surface. Due to factors such as surface tension and intermolecular forces, this air layer will exert a certain binding force on the dust adhering to the substrate surface. The dust may be partially embedded in this air layer and is difficult to be blown away by a simple airflow. However, by setting up an ultrasonic generator 6, it can generate high-intensity, high-frequency ultrasonic vibrations. These high-frequency vibrations can transfer energy to the air critical layer on the substrate surface, causing the air critical layer to be violently disturbed, breaking its original stable structure, and weakening the binding force on the dust, thereby cooperating with the second separation component for separation.
[0025] The ultrasonic generator 6 mentioned above can be a commercially available industrial-grade ultrasonic generator. The specific model can be selected according to actual production needs. The specific structure and working principle of the ultrasonic generator 6 are common knowledge to those skilled in the art and will not be described in detail here.
[0026] Specifically, both the first separation component and the second separation component include an air compressor (not shown in the figure), a high-pressure chamber 7, and an oscillating element (not shown in the figure). The air compressor is connected to the high-pressure chamber 7, and the oscillating element is installed in the high-pressure chamber 7 and is used to drive the high-pressure chamber 7 to oscillate. The high-pressure chamber 7 has an air outlet (not shown in the figure) on the coating side or substrate side of the electrode 3. The air compressor provides high-pressure gas to the high-pressure chamber 7, and the oscillating element drives the high-pressure chamber 7 to oscillate, so that the high-pressure gas forms a high-frequency turbulent airflow and acts on the surface of the electrode 3 through the air outlet to separate dust. The synergistic effect of high-pressure gas and high-frequency oscillation enhances the dust removal ability and ensures that the dust on the coating side and the substrate side can be effectively removed. Compared with the high-pressure airflow alone, it can break the adhesion between the dust and the electrode 3 more efficiently, improve the separation effect, and avoid mechanical damage to the coating layer.
[0027] It should be noted that the oscillation element can be any commercially available vibration generator, such as a piezoelectric ceramic oscillator or an electromagnetic oscillator, which can achieve high-frequency mechanical oscillation. No further details or restrictions will be provided here.
[0028] Furthermore, the angle between the outlet direction of the high-pressure chamber 7 and the surface of the electrode 3 is 30°-60°, so that the airflow acts obliquely on the dust on the surface of the electrode 3, avoiding damage to the coating caused by the direct impact of the vertical airflow on the coating layer. At the same time, the oblique airflow can accurately blow the dust to the adsorption range of the first vacuum adsorption component or the second vacuum adsorption component, thereby improving the dust separation efficiency.
[0029] In addition, both the first vacuum adsorption component and the second vacuum adsorption component include a vacuum pump (not shown in the figure) and a vacuum chamber 8. The vacuum pump is connected to the vacuum chamber 8. The vacuum chamber 8 is located on one side of the first separation component or the second separation component and has an air intake hole (not shown in the figure). By starting the vacuum pump, the vacuum chamber 8 is made to form a negative pressure, and then the separated dust is sucked into the vacuum chamber 8 through the air intake hole to achieve dust collection.
[0030] Furthermore, two vacuum chambers 8 are provided, which are symmetrically arranged on opposite sides of the first separation component or on opposite sides of the second separation component. Specifically, the two vacuum chambers 8 can be arranged on opposite sides of the first separation component or on opposite sides of the second separation component along the conveying direction of the electrode 3, so as to form a "sandwich" adsorption of the dust after it is separated from the electrode 3, thereby covering the diffusion path of the dust after separation, further improving the adsorption efficiency and reducing the dust residue on the surface of the electrode 3.
[0031] Preferably, the electrode dust removal device after coating and drying also includes two electrostatic eliminators 9. The two electrostatic eliminators 9 are respectively disposed in the coating-side dust removal module 1 and the substrate-side dust removal module 2. The electrostatic eliminators 9 are used to remove static electricity from the coating-side surface or the substrate-side surface of the electrode 3. The pretreatment by removing static electricity from the coating-side and substrate-side surfaces of the electrode 3 by the two electrostatic eliminators 9 respectively can eliminate the adsorption force of static electricity on dust, which can weaken the electrostatic adsorption effect between dust and the surface of the electrode 3, reduce the difficulty of separating dust for the subsequent first separation component and second separation component, improve the overall dust removal efficiency, and is suitable for the electrode 3 working condition that is prone to static electricity after drying.
[0032] It should be noted that the static eliminator 9 can be any commercially available industrial-grade static eliminator, such as ion bars or ion fans. All of these devices can neutralize the static charge on the surface of the electrode 3 by generating positive and negative ions, and will not be elaborated or limited here.
[0033] Preferably, when both sides of the electrode 3 are coated, the ultrasonic generator 6 is turned off. That is, when the electrode 3 is coated on both sides, the ultrasonic generator 6 of the substrate-side dust removal module 2 can be turned off, so that the substrate side of the electrode 3 only works through the second separation component and the second vacuum adsorption component. This is consistent with the working principle of the coating dust removal module, so that the equipment can flexibly match the single and double-sided coated electrode 3 without changing the equipment to meet the dust removal needs of different products.
[0034] The implementation principle of the electrode dust removal device after coating and drying in this application embodiment is as follows: After the electrode 3 is coated and dried, the coating side of the electrode 3 and the substrate side of the electrode 3 correspond to the coating side dust removal module 1 and the substrate side dust removal module 2, respectively. The static eliminators 9 on both sides first remove the static electricity on the surface of the electrode 3 to reduce the dust adsorption force. The coating side is separated by high-frequency turbulent airflow generated by the high-pressure chamber 7 under the drive of the oscillating element. Then, the dust is adsorbed by negative pressure in the vacuum chamber 8.
[0035] First, the ultrasonic generator 6 breaks the air critical layer on the substrate surface. Then, the high-pressure chamber 7 generates a high-frequency turbulent airflow to separate the dust under the drive of the oscillating element. The dust is then adsorbed by the vacuum chamber 8 under negative pressure. If the electrode 3 is coated on both sides, the ultrasonic generator 6 is turned off and the dust removal module 1 on the coating side is operated according to the principle to achieve efficient dust removal on both sides of the electrode 3.
[0036] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of this application.
Claims
1. A coated dry electrode tab dust removal device, characterized by, include: The coating-side dust removal module (1) is located on the coating side of the electrode (3) and includes a first separation component and a first vacuum adsorption component. When the electrode (3) is transported to the coating-side dust removal module (1) after coating and drying, the first separation component is used to separate the surface dust on the coating side of the electrode (3), and the first vacuum adsorption component is used to adsorb the surface dust separated on the coating side of the electrode (3). The substrate-side dust removal module (2) is located on the coating side of the electrode (3) and includes an ultrasonic generator (6), a second separation component, and a second vacuum adsorption component. When the electrode (3) is transported to the substrate-side dust removal module (2) after coating and drying, the ultrasonic generator (6) generates high-intensity high-frequency ultrasonic waves to the substrate-side surface of the electrode (3), the second separation component separates the surface dust on the substrate side of the electrode (3), and the second vacuum adsorption component adsorbs the surface dust separated from the substrate side of the electrode (3).
2. The coated and dried electrode sheet dust removal device according to claim 1, characterized by, Both the first separation component and the second separation component include an air compressor, a high-pressure chamber (7), and an oscillating element. The air compressor is connected to the high-pressure chamber (7), and the oscillating element is installed in the high-pressure chamber (7) and is used to drive the high-pressure chamber (7) to oscillate. The high-pressure chamber (7) has an air outlet on the side corresponding to the coating of the electrode sheet (3) or the substrate side.
3. The coated and dried electrode sheet dust removal device according to claim 2, wherein The angle between the outlet direction of the high-pressure chamber (7) and the surface of the electrode (3) is 30°-60°.
4. The coated and dried electrode sheet dust removal device according to claim 1, wherein Both the first vacuum adsorption component and the second vacuum adsorption component include a vacuum pump and a vacuum chamber (8). The vacuum pump is connected to the vacuum chamber (8). The vacuum chamber (8) is located on one side of the first separation component or the second separation component and has an air intake hole.
5. The coated and dried electrode sheet dust removal device according to claim 4, characterized by There are two vacuum chambers (8), which are symmetrically arranged on opposite sides of the first separation component or on opposite sides of the second separation component.
6. The electrode dust removal device after coating and drying as described in claim 1, characterized in that, It also includes two static eliminators (9), which are respectively installed in the coating-side dust removal module (1) and the substrate-side dust removal module (2). The static eliminators (9) are used to remove static electricity from the coating-side surface or the substrate-side surface of the electrode (3).
7. The coated and dried electrode sheet dust removal device according to claim 1, wherein When both sides of the electrode (3) are coated, the ultrasonic generator (6) is turned off.