Dust removal device for cylindrical battery shell

Abstract

The utility model discloses a dust removal device for a cylindrical battery case, which belongs to the field of battery manufacturing and comprises a support, a dust collection cover is mounted on the upper portion of the support, a mounting position with a vertical upward opening is arranged in the dust collection cover, and a tray for vertically bearing the battery case is hermetically placed on the mounting position. An opening facing the tray is formed in the bottom of the mounting position and connected with a dust collection module. By means of sealing of the dust collection cover and the tray, the sealing performance in the cleaning process can be guaranteed, airflow for dust collection is utilized to the maximum degree, the battery shell can be conveniently placed and taken out by arranging the tray, and meanwhile the stability of the battery shell in the cleaning process is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the field of battery manufacturing, and specifically relates to a dust removal device for cylindrical battery cases. Background Art

[0002] In the battery manufacturing industry, cylindrical batteries are widely used in various portable electronic devices and electric vehicle fields due to their compact structure and high energy density. The steel cases used in the manufacturing of cylindrical lithium batteries are made by plating nickel on the surface of steel plates after stamping, or by stamping after plating nickel on the steel plates. However, during the assembly process of the battery cases, a large number of metal particles will remain inside and outside the steel cases regardless of the production method. In particular, the particles inside the steel cases will be encapsulated in the steel cases together with the winding core. These metal particles will enter the inside of the winding core when flowing with the electrolyte inside the battery. In severe cases, the diaphragm will be punctured and the positive and negative plates will be connected together, thus triggering some safety risks.

[0003] Traditional battery case cleaning methods mostly adopt manual wiping or simple manual hand-held blowing cleaning methods. This way is not only inefficient, but also difficult to ensure the cleaning quality, especially the removal effect of fine particles is not good. In addition, manual cleaning also has problems such as high labor intensity and inconvenient operation. Therefore, the utility model patent with the publication number CN218908937U discloses a dust removal and feeding integrated device for cylindrical battery steel cases, including a feeding box, a steel case storage box, a concave belt, and a dust removal mechanism. The cylindrical battery steel cases in the steel case storage box slide into the chute formed by the top surface slope of the lifting plate assembly and the side wall of the box through the bottom slope. During the rising process of the lifting plate assembly, dust removal is carried out through the dust removal mechanism. The lifting plate assembly continues to rise to place the cylindrical battery steel cases on the concave belt, and the cylindrical battery steel cases can be transported to the feeding box through the movement of the concave belt. To solve the problem of automatic dust removal.

[0004] However, the battery cases in this technology are all in an open space, and the dust collection effect is not good, and there will still be a lot of metal particles remaining.

[0005] In view of this, the present application is specifically proposed. Content of the Utility Model

[0006] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a dust removal device for cylindrical battery cases. The utility model is realized through the following technical solutions:

[0007] A dust removal device for cylindrical battery cases includes a bracket, a dust collection cover is installed on the upper part of the bracket, an installation position with an upward vertical opening is arranged in the dust collection cover, a tray for vertically carrying the battery cases is hermetically placed on the installation position, an opening facing the tray is arranged at the bottom of the installation position, and the opening is connected with a dust suction module.

[0008] Preferably, the dust suction module includes a dust suction pipe and a dust collector. One end of the dust suction pipe is connected to the opening, and the other end is connected to the dust collector. The dust collector forms a downward airflow in the dust collection cover through the dust suction pipe.

[0009] Preferably, the bottom of the tray is provided with mesh holes.

[0010] Preferably, the tray is made of insulating material;

[0011] Alternatively, the surface of the tray is provided with an insulating coating.

[0012] Preferably, a flexible gasket is provided on the inner wall of the installation position, and the flexible gasket is abutted against the tray to achieve sealing.

[0013] Preferably, the upper part of the installation position is provided with a guiding sliding surface inclined outward.

[0014] Preferably, a sensor is provided on the side wall of the dust collection cover.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1. Through the sealing between the dust collection cover and the tray, the sealing property during the cleaning process can be ensured, maximizing the utilization of the dust collection airflow. The setting of the tray facilitates the placement and removal of the battery case, and at the same time ensures the stability of the battery case during the cleaning process.

[0017] 2. By providing mesh holes at the bottom of the tray, the dust suction module can more effectively suck the dust particles on the battery case in the tray, improving the dust removal effect. The setting of the mesh holes also helps to maintain the air pressure balance of the entire device, ensuring the stable progress of the dust removal process.

[0018] 3. By setting insulating material or insulating coating, it can prevent the battery case from being affected by accidental current during the cleaning process, and also reduce the problem of dust adsorption caused by static electricity, further improving the cleaning efficiency. Description of the Drawings

[0019] Figure 1 is the front structural schematic diagram of the present utility model;

[0020] Figure 2 is the top view structural schematic diagram of the present utility model;

[0021] Figure 3 is the schematic diagram of the erasing module of the present utility model.

[0022] In the figure: 1. Bracket; 11. Dust collection cover; 12. Tray; 3. Battery case; 4. Sensor; 5. Dust suction pipe; 6. Dust collector; 7. Erasing module; 71. Erasing module group; 711. Horizontal bar; 712. Brush. Detailed implementation manners

[0023] The present utility model will be further described and illustrated below with reference to the accompanying drawings.

[0024] As Figure 1 and Figure 2 shown, this embodiment provides a dust removal device for a cylindrical battery case, including a bracket 1. A dust collection hood 11 is installed on the upper part of the bracket 1. An installation position with an upward opening is provided in the dust collection hood 11. A tray 12 for vertically carrying the battery case 3 is hermetically placed on the installation position. An opening facing the tray 12 is provided at the bottom of the installation position, and the opening is connected to a dust suction module.

[0025] Through the sealing of the dust collection hood 11 and the tray 12, the sealing property during the cleaning process can be ensured, maximizing the utilization of the dust collection airflow. The setting of the tray 12 facilitates the placement and removal of the battery case 3, and at the same time ensures the stability of the battery case 3 during the cleaning process.

[0026] The dust suction module includes a dust suction pipe 5 and a dust collector 6. One end of the dust suction pipe 5 is connected to the opening, and the other end is connected to the dust collector 6. The dust collector 6 forms a downward airflow in the dust collection hood 11 through the dust suction pipe 5.

[0027] Preferably, the bottom of the tray 12 is provided with mesh holes. By providing mesh holes at the bottom of the tray 12, the dust suction module can more effectively suck the dust particles on the battery case 3 in the tray 12, improving the dust removal effect. The setting of the mesh holes also helps to maintain the air pressure balance of the whole device, ensuring the stable progress of the dust removal process.

[0028] The number of mesh holes is preferably 10 meshes, and mesh holes with a larger aperture can also be used as appropriate to meet the usage requirements.

[0029] Further preferably, the tray 12 is made of an insulating material; or, an insulating coating is provided on the surface of the tray 12.

[0030] By providing an insulating material or an insulating coating, it can prevent the battery case 3 from being affected by accidental current during the cleaning process, and also reduce the problem of dust adsorption caused by static electricity, further improving the cleaning efficiency.

[0031] A flexible sealing gasket is provided on the inner wall of the installation position, and the flexible sealing gasket abuts against the tray 12 to achieve sealing.

[0032] The combined use of the flexible sealing gasket and the tray 12 ensures the tight sealing between the tray 12 and the installation position, reduces air leakage, and enhances the dust suction effect. The improvement of the sealing performance also helps to maintain the stability and consistency of the airflow in the dust collection hood 11, and can effectively prevent dust from escaping from the gap between the tray 12 and the installation position, improving the dust removal effect.

[0033] Preferably, an outwardly inclined guiding and sliding surface is provided at the upper part of the installation position, which can facilitate the placement and removal of the tray 12. At the same time, the guiding and sliding surface can also increase the surface area of the air inlet, improve the air inlet effect, and thus improve the dust removal ability.

[0034] Preferably, a sensor 4 is provided on the side wall of the dust collection hood 11, which is used to sense whether the tray 12 is placed. When the tray 12 is placed, the dust collector 6 is automatically started to form a negative pressure for dust collection.

[0035] Furthermore, as Figure 3 shown, an erasing module 7 can be provided on the tray 12. The erasing module 7 includes a plurality of erasing modules 71. Each erasing module 71 includes two oppositely arranged cross bars 711. The cross bars 711 can slide horizontally on the tray 12. Brush hairs 712 with arc-shaped clamping positions are provided on the cross bars 711, and the battery case 3 is fixed by the arc-shaped clamping positions of the two brush hairs 712.

[0036] The two cross bars 711 of each erasing module 71 can move relative to each other, driving the brush hairs 712 to brush off the dust particles on the surface of the battery case 3. Further, the erasing module 7 further includes two handles, which are provided on both sides of the erasing module 7 and are spacedly connected to the cross bars 711 on one side. The two handles are respectively connected to different cross bars 711 to realize the synchronous relative movement of the cross bars 711 in each erasing module 71.

[0037] Furthermore, the handles can be manually pulled by an operator, or a linear motor (not shown in the figure) or an electromagnetic vibrator can be provided and connected to the handles to realize electric control.

[0038] After dust removal, the number of metal particles inside the battery case 3, that is, the steel shell, is significantly reduced. With the reduction of the metal particles inside the steel shell, after the battery is finished, the proportion of batteries with defects such as internal micro short circuit and large self-discharge is significantly reduced, and the product safety is significantly improved.

Claims

1. A dust removal device for a cylindrical battery shell, characterized in that: The invention comprises a bracket (1), a dust collecting hood (11) being installed on the upper part of the bracket (1), a mounting position opening vertically upward being provided in the dust collecting hood (11), a tray (12) vertically supporting a battery shell (3) being sealed and placed on the mounting position, an opening facing the tray (12) being provided at the bottom of the mounting position, and a dust collecting module being connected to the opening.

2. A dust removal device for a cylindrical battery shell according to claim 1, characterized in that: The dust collection module comprises a dust collection pipe (5) and a dust collector (6); one end of the dust collection pipe (5) is connected to an opening, and the other end is connected to the dust collector (6); the dust collector (6) forms a top-down airflow in a dust collection hood (11) through the dust collection pipe (5).

3. A dust removal device for a cylindrical battery shell according to claim 1, characterized in that: The bottom of the tray (12) is provided with mesh holes.

4. A dust removal device for a cylindrical battery shell according to claim 1, characterized in that: The tray (12) is made of insulating material; Alternatively, the surface of the tray (12) is provided with an insulating coating.

5. A dust removal device for a cylindrical battery shell according to any one of claims 1 to 4, characterized in that: A flexible sealing pad is arranged on the inner wall of the installation position, and the flexible sealing pad abuts against the tray (12) to achieve sealing.

6. A dust removal device for a cylindrical battery shell according to claim 4, characterized in that: The upper part of the installation position is provided with a guide sliding surface inclined toward the outside.

7. A dust removal device for a cylindrical battery shell according to claim 1, characterized in that: A sensor (4) is provided on the side wall of the dust collecting cover (11).

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