Pole piece dust removal device and pole piece dust removal system

Abstract

The application provides an electrode sheet dust removal device and a dust removal system, which comprises a dust suction cover, the dust suction cover comprises a cover body, the cover body comprises a dust suction port and a dust outlet; a wind knife is arranged on the outer side of the dust suction cover, the wind knife comprises an air inlet, an air outlet and an arc-shaped air duct connecting the air inlet and the air outlet, the air outlet is substantially flush with the plane where the dust suction port is located, the concave surface of the arc-shaped air duct faces the dust suction cover, and the curvature of the arc-shaped air duct is arranged so that the wind blown by the wind knife can be guided along the curved surface of the arc-shaped air duct to a direction parallel to the plane where the air outlet is located. The electrode sheet dust removal device provided by the application can improve the dust removal effect and improve the space utilization.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to an electrode dust removal device and an electrode dust removal system. Background Technology

[0002] Current lithium battery manufacturing processes require electrode dust removal, such as rolling, die-cutting, and winding. Dust removal modules are designed to meet this need. Existing dust removal methods include brush and negative pressure suction, and non-contact dust removal combining ultrasonic waves, air knives, and ionization. The first method, using brushes, has two drawbacks: firstly, the brushes leave scratches on the electrode surface, affecting CCD inspection and potentially damaging the electrode, especially the negative electrode; secondly, the friction between the brush and the electrode generates static electricity, causing secondary dust adsorption and incomplete cleaning, with dust remaining inside the brush, making cleaning tedious. The second method, using large ultrasonic and air knife structures in a separate configuration, occupies a large space, reducing the ease of electrode feeding. Furthermore, the air knife in existing methods blows at an angle to the electrode surface, causing vibration interference and affecting the stability of the electrode feeding process, thus impacting dust removal efficiency. Utility Model Content

[0003] In order to overcome the defects in the prior art, this utility model provides an electrode dust removal device and an electrode dust removal system, which can improve the dust removal effect and improve space utilization.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] The first aspect of this utility model discloses an electrode dust removal device, comprising:

[0006] A dust hood, comprising a hood body, the hood body including a suction port and a dust outlet;

[0007] An air knife is disposed on the outside of the dust collection hood. The air knife includes an air inlet, an air outlet, and an arc-shaped air duct connecting the air inlet and the air outlet. The air outlet is approximately flush with the plane of the dust collection port. The concave surface of the arc-shaped air duct faces the dust collection hood. The curvature of the arc-shaped air duct is set so that the air blown out by the air knife can be guided along the arc surface of the arc-shaped air duct in a direction parallel to the plane of the air outlet.

[0008] The above technical solution sets the air duct of the air knife into an arc-shaped structure with an arc surface, enabling it to have the Coanda effect. This allows the air flowing through the air duct to flow along the convex surface of the arc, and when it blows onto the electrode surface, it is guided to a direction parallel to the electrode plane. This can eliminate the vibration interference of the angled wind blowing onto the electrode surface by the traditional air knife, improve the stability of the electrode movement, and the air knife with the Coanda boundary effect can increase the wind speed, increase the force of blowing dust, and improve the dust removal effect.

[0009] Furthermore, it also includes an ion wind generator, which is connected to the arc-shaped air duct and positioned close to the air inlet. The ion wind generator causes the air flowing through the arc-shaped air duct to form ion wind, which can remove static electricity from dust particles, eliminate the electrostatic adhesion of dust particles, and further improve the dust removal effect.

[0010] Furthermore, it also includes an ultrasonic generator, which is connected to the dust collection hood and positioned close to the dust collection port. The sound waves from the ultrasonic generator can impact and vibrate the surface of the electrode, making it easier for dust particles attached to the electrode surface to fall off, further improving the dust removal effect.

[0011] Furthermore, the suction port is located at the bottom end of the cover, and the dust outlet is located at the top end of the cover. The cross-section of the dust hood gradually decreases from the end with the suction port to the end with the dust outlet. The gradual decrease in cross-section towards the dust outlet provides a more uniform suction airflow field. During dust removal, the end of the dust hood with the suction port is closer to the electrode surface, and the larger cross-section provides higher suction efficiency.

[0012] Furthermore, the electrode dust removal device includes two air knives, which are respectively located on opposite sides of the dust collection hood. The concave surface of the arc-shaped air duct faces the dust collection hood, allowing the air blown from the air knife outlets to flow towards the dust collection hood's suction port. Since air knives are provided on both sides of the dust collection hood, the air blows from both sides of the hood towards the center under the action of the air knives. At the same time, the dust collection hood in the center uses negative pressure to suction dust, forming a directional airflow that prevents dust particles from escaping and causing secondary pollution.

[0013] Furthermore, the air inlet and outlet of the air knife are located on opposite sides of the arc-shaped air duct. This allows the air entering from the air inlet to flow along the convex surface of the arc.

[0014] Furthermore, the air inlet of the air knife is provided with a second connecting part, which can be connected to an external air duct.

[0015] Furthermore, the dust outlet of the dust hood is provided with a first connecting part, which can be connected to an external dust removal pipe.

[0016] The second aspect of this utility model discloses an electrode dust removal system, including an electrode and an electrode dust removal device as described in any of the first aspects. During dust removal, the electrode dust removal devices are provided on both sides of the electrode surface. The electrode dust removal devices are spaced apart from the electrode surface by a preset distance. The suction port of the dust suction hood and the air outlet of the air knife are both facing the electrode surface.

[0017] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0018] 1. This application sets the air duct of the air knife into an arc-shaped structure with an arc surface, so that it has the Coanda effect, allowing the air flowing through the air duct to flow along the convex surface of the arc. When it blows onto the surface of the electrode, it can be guided to a direction parallel to the plane of the electrode, which can eliminate the vibration interference of the angled wind blown by the traditional air knife on the electrode and improve the stability of the electrode movement.

[0019] 2. This application utilizes an air knife with Coanda boundary effect to increase the wind speed to 200 m / s while reducing interference with electrode vibration. This is 10 times higher than the existing highest wind speed of 20 m / s, which can increase the force of blowing dust and improve the dust removal effect.

[0020] 3. This application uses air knives on opposite sides of the dust hood to create a directional airflow, which can prevent dust particles from escaping during the blowing process and causing secondary pollution.

[0021] 4. This application integrates the air knife, ion air generator, ultrasonic generator and dust collection hood into one unit, which can reduce the space occupied by the equipment and improve space utilization.

[0022] To make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a structural diagram of an electrode dust removal device provided in an embodiment of this utility model;

[0025] Figure 2 This is a top view of an electrode dust removal device provided in an embodiment of this utility model;

[0026] Figure 3This is a side view of an electrode dust removal device provided in an embodiment of this utility model;

[0027] Figure 4 This is a schematic diagram of the operation of an electrode dust removal system provided in an embodiment of this utility model.

[0028] The reference numerals in the above figures are as follows: 1. Cover; 2. Dust inlet; 3. Air knife; 4. Air outlet; 5. Curved air duct; 6. Ionizing air generator; 7. Ultrasonic generator; 8. First connecting part; 9. Second connecting part. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. In addition, the accompanying drawings of the present invention are only simple schematic illustrations and are not depictions based on actual dimensions, as stated in advance.

[0030] In this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "forward," "backward," "between," "nearer," and "farthest" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing this utility model and for simplifying the description, 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. It should also be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" 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 direct connection or an indirect connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] It should be understood that while terms such as "first," "second," and "third" may be used in this document to describe various components or signals, these components or signals should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one signal from another. Furthermore, the term "or" as used herein should, as appropriate, include any combination of one or more of the related listed items.

[0032] Reference Figures 1-3 This application provides an electrode dust removal device, comprising:

[0033] A dust collection hood, comprising a hood body 1, wherein the hood body 1 includes a dust suction port 2 and a dust discharge port.

[0034] In the embodiments of this application, the suction port 2 is located at the bottom of the cover 1, and the dust outlet is located at the top of the cover 1. The suction port 2 and the dust outlet are integrally formed with the cover 1 body. It should be noted that the top and bottom of the cover 1 are arranged relative to the direction of suction, with the suction inlet at the bottom and the outlet at the top.

[0035] The material and size of the cover 1 can be flexibly set according to the actual situation. In order to ensure that the wind speed field inside the cover 1 is more uniform, the cross-section of the cover 1 gradually decreases from the end with the dust inlet 2 to the end with the dust outlet.

[0036] like Figure 1 and Figure 2 As shown, the periphery of the cover 1 is an inclined surface that slopes from the dust outlet to the dust suction port 2, making the cover 1 as a whole funnel shape. At the dust suction port 2, the cross-section of the cover 1 is at its maximum.

[0037] The dust outlet of the cover 1 is provided with a first connecting part 8, which can be connected to an external dust removal pipe to clean dust and other foreign objects.

[0038] The air knife 3 is located on the outside of the cover 1. The air knife 3 includes an air inlet, an air outlet 4, and an arc-shaped air duct 5 connecting the air inlet and the air outlet 4.

[0039] The air inlet of the air knife 3 is provided with a second connecting part 9, which can be connected to an external air duct, so that high-speed air enters the air knife 3 from the air inlet. The air outlet 4 and the dust suction port 2 are roughly flush with each other. The concave surface of the arc-shaped air duct 5 faces the cover 1. The curvature of the arc-shaped air duct 5 is set so that the air blown out by the air knife 3 can be guided along the arc surface of the arc-shaped air duct 5 in a direction parallel to the plane of the air outlet 4.

[0040] like Figures 1-4 As shown in the embodiment of this application, the tangent at the highest point of the arc surface of the arc-shaped air knife 5 is perpendicular to the plane where the electrode is located.

[0041] In one possible embodiment, the first connecting part and the second connecting part can be a connecting pipe.

[0042] In the embodiments of this application, the air inlet and air outlet 4 of the air knife 3 are located on opposite sides of the arc-shaped air duct 5.

[0043] The electrode dust removal device is provided with at least one air knife 3, which can be located at any position outside the dust inlet 3 cover 1. In the embodiments of this application, the electrode dust removal device is provided with two air knives 3, which are connected to the outer wall of the cover 1 and are arranged opposite to each other on both sides of the cover 1, thereby forming convection on both sides of the cover 1.

[0044] To further improve the dust removal effect, the electrode dust removal device is also equipped with an ion wind generator 6. The ion wind generator 6 is connected to the arc-shaped air duct 5 and is set close to the air inlet. The ion wind generated by the ion wind generator 6 can remove the static electricity carried by the dust particles, eliminate the static adhesion of the dust particles, and improve the dust removal effect.

[0045] To further improve the dust removal effect, the electrode dust removal device is also equipped with an ultrasonic generator 7. The ultrasonic generator 7 is connected to the cover 1 and is positioned near the dust suction port 2. Figure 1 As shown, the ultrasonic generator 7 is located between the cover 1 and the air knife 3.

[0046] This application embodiment also provides an electrode dust removal system, which includes an electrode 10 and an electrode dust removal device as described in the above embodiment. During dust removal, electrode dust removal devices are provided on both sides of the electrode 10. The electrode dust removal devices are spaced at a preset distance from the surface of the electrode 10. The suction port 2 of the dust hood and the air outlet 4 of the air knife 3 are both facing the surface of the electrode 10. The planes where the suction port 2 of the dust hood and the air outlet 4 of the air knife 3 are located are parallel to the surface of the electrode, so that the air blown out by the air knife 3 can be guided along the arc surface of the arc-shaped air duct 5 and parallel to the surface of the electrode 10, thereby eliminating the vibration interference of the angled air blown out by the air knife on the electrode and improving the stability of the electrode movement.

[0047] Since the electrode dust removal device in this embodiment integrates the air knife 3, ion wind generator 6, ultrasonic generator 7 and dust collection hood into one unit, it occupies little space. The electrode dust removal device can be set on both sides of the vertically moving electrode, or on both sides of the horizontally moving electrode, or on both sides of the inclined moving electrode. The preset interval between the electrode dust removal device and the electrode is set according to the moving direction and angle of the electrode 10.

[0048] The working principle of the electrode dust removal device in the above embodiment is as follows: the external air duct is connected to the second connecting part 9 on the air knife 3, so that the high-speed air enters through the air inlet of the air knife 3, passes through the ion air generator 6, and turns the high-speed air into high-speed ion air. Then, it passes through the arc-shaped air duct 5 and the air outlet 4, and guides the high-speed ion air in a direction parallel to the surface of the electrode 10. At the same time, the ultrasonic generator 7 generates ultrasonic high-frequency vibration, so that the dust particles on the surface of the electrode 10 are detached from the surface of the electrode 10 and blown away by the high-speed ion air towards the dust collection hood. Then, it is sucked away by the negative pressure air in the negative pressure dust collection hood area and discharged through the negative pressure dust collection port 2 and the dust outlet to the dust collection equipment.

[0049] This utility model uses specific embodiments to illustrate the principle and implementation of the utility model. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​the utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the utility model. Therefore, the content of this specification should not be construed as a limitation of the utility model.

Claims

1. An electrode dust removal device, characterized in that, include: A dust collection hood, comprising a hood body, the hood body including a suction port and a dust outlet; An air knife is disposed on the outside of the dust collection hood. The air knife includes an air inlet, an air outlet, and an arc-shaped air duct connecting the air inlet and the air outlet. The air outlet is approximately flush with the plane of the dust collection port. The concave surface of the arc-shaped air duct faces the dust collection hood. The curvature of the arc-shaped air duct is set so that the air blown out by the air knife can be guided along the arc surface of the arc-shaped air duct in a direction parallel to the plane of the air outlet.

2. The electrode dust removal device according to claim 1, characterized in that, It also includes an ion wind generator, which is connected to the arc-shaped air duct and is located near the air inlet.

3. The electrode dust removal device according to claim 1, characterized in that, It also includes an ultrasonic generator, which is connected to the dust collection hood and positioned near the dust collection port.

4. The electrode dust removal device according to claim 1, characterized in that, The suction port is located at the bottom of the cover, and the dust outlet is located at the top of the cover. The cross-section of the dust hood gradually decreases from the end with the suction port to the end with the dust outlet.

5. The electrode dust removal device according to claim 1, characterized in that, The electrode dust removal device includes two air knives, which are respectively located on opposite sides of the dust collection hood.

6. The electrode dust removal device according to claim 1, characterized in that, The air inlet and outlet of the air knife are located on opposite sides of the arc-shaped air duct.

7. The electrode dust removal device according to claim 1, characterized in that, The air inlet of the air knife is provided with a second connecting part, which can be connected to an external air duct.

8. The electrode dust removal device according to claim 1, characterized in that, The dust outlet of the dust collection hood is provided with a first connecting part, which can be connected to an external dust removal pipe.

9. An electrode dust removal system, characterized in that, The device includes an electrode sheet and an electrode sheet dust removal device as described in any one of claims 1 to 8. During dust removal, an electrode sheet dust removal device is provided on both sides of the electrode sheet. The electrode sheet dust removal device is spaced at a preset distance from the electrode sheet surface. The dust suction port of the dust suction hood and the air outlet of the air knife are both facing the electrode sheet surface.

Images