Dust removal device and battery production system

Abstract

The utility model provides a dust removal device and a battery production system.The dust removal device comprises a dust removal assembly and a first driving assembly, the dust removal assembly comprises a dust removal brush, and the first driving assembly is connected to the dust removal brush and is configured to be capable of driving the dust removal brush to move in the first direction. In this way, the dust removal brush can move while sweeping the welding slag, and therefore the welding slag on the hollow pole of the single battery prefabricated part can be removed in a larger area; furthermore, the dust removal brush can clean the strip-shaped welding marks, so that the cleaning effect of the dust removal device is improved.

Description

Technical Field

[0001] The utility model relates to the field of batteries, in particular to a dust removal device and a battery production system. Background Art

[0002] Welding is an important part of the battery production process, and laser welding and other processes will produce a large amount of welding slag and other substances. Due to the small size of welding slag, it is easy to cause pollution to production equipment, affecting the use effect or service life of production equipment. Therefore, cleaning of welding slag after welding is a technical problem that needs to be solved urgently. Utility Model Content

[0003] The main technical problem solved by the present application is to provide a dust removal device and a battery production system that can efficiently clean the welding slag generated by welding.

[0004] To solve the above technical problems, on the first aspect, a technical solution adopted in the present application is to provide a dust removal device, wherein the dust removal device includes a dust removal component and a first driving component, wherein the dust removal component includes a dust removal brush, and the first driving component is connected to the dust removal brush and is configured to drive the dust removal brush to move along a first direction.

[0005] In the above technical solution, by setting up a dust removal device including a dust removal component and a first drive component, the dust removal component includes a dust removal brush, and the first drive component is configured to be able to drive the dust removal brush to move along a first direction, the dust removal brush can be moved while cleaning the welding slag, so that the welding slag on the hollow pole of the battery cell preform can be removed from a larger area; further, the dust removal brush can achieve the cleaning of strip-type weld marks, thereby improving the cleaning effect of the dust removal device.

[0006] In some embodiments, the dust removal assembly further includes a dust removal cover, and the dust removal brush is disposed in the dust removal cover and is configured to be able to move back and forth in the dust removal cover along the first direction.

[0007] In the above technical solution, by providing a dust hood and restricting the dust brush inside the dust hood, the hollow pole of the battery cell preform can be isolated from the outside world, reducing the risk of splashing or scattering of welding slag to other parts or the environment during the cleaning process of the dust removal component, thereby reducing pollution; and the dust hood also limits the moving range of the dust brush, which can reduce the contact between the dust brush and other parts, thereby reducing the scattering of welding slag on the dust brush.

[0008] In some embodiments, a side wall of the dust hood has an air inlet.

[0009] In the above technical solution, by arranging an air inlet on the side wall of the dust hood, external gas can enter the dust hood, and then the welding slag swept off by the dust brush can flow with the gas, so as to achieve the purpose of cleaning the welding slag.

[0010] In some of the embodiments, a flexible protective sleeve is provided at the port of the dust cover.

[0011] In the above technical solution, by providing a flexible protective cover at the port of the dust hood, on the one hand, the port of the dust hood can be protected, and on the other hand, the port of the dust hood can reduce the damage to the hollow pole or other components of the battery cell preform during the process of aligning and installing the dust hood to the battery cell preform.

[0012] In some embodiments, the port of the dust cover includes two long sides arranged opposite to each other and two short sides arranged opposite to each other, the long sides extend along the first direction, and the short sides are respectively connected to the two long sides.

[0013] In the above technical solution, the port of the dust hood is provided to include two long sides extending along the first direction and two short sides respectively connecting the two long sides, so that the shape of the port of the dust hood matches the shape of the hollow pole of the battery cell preform, so that the dust hood can just cover the hollow pole of the battery cell preform, and neither of them will fall off easily, and the hollow pole of the battery cell preform will not be exposed.

[0014] In some embodiments, the dust removal assembly further includes a plug, which is disposed in the dust removal cover.

[0015] In the above technical solution, a plug is arranged in the dust removal hood, which can be pressed onto the interior of the hollow pole of the battery cell preform to block the opening gap at the bottom of the hollow pole of the battery cell preform, thereby reducing the risk of welding slag entering the interior of the battery cell preform through the opening gap at the bottom of the hollow pole.

[0016] In some embodiments, one end of the plug extends out of the port of the dust cover.

[0017] In the above technical solution, the port of the dust cover is extended from one end of the plug, so that it can be easily inserted into the open gap at the bottom of the hollow pole and pass through the gap, thereby reducing the risk of welding slag entering the interior of the battery cell prefabricated part and causing contamination.

[0018] In some embodiments, the plug is spaced apart from the inner wall surface of the dust cover and extends along the first direction, and the dust removal brush is located at the bottom of the plug.

[0019] In the above technical solution, by setting the plug apart from the inner wall surface of the dust cover and extending along the first direction, and the dust brush being located at the bottom of the plug, the plug can block the gap, and the dust brush can clean the welding slag around the pole ear, further reducing the risk of welding slag falling, and will not hinder the movement of the dust brush along the first direction.

[0020] In some embodiments, the surface of the plug close to the dust removal brush is a plane, and the dust removal brush is cylindrical and is tangent to or spaced from the plane.

[0021] In the above technical solution, by setting the dust removal brush to be cylindrical, the resistance between the dust removal brush and the air can be minimized when the dust removal brush moves, and since there are no edges and corners, it is easier to clean corners; in addition, by making the surface of the plug close to the dust removal brush flat and tangent to or spaced apart from the dust removal brush, the dust removal brush can be translated along the extension direction of the plane of the plug, and the plug will not hinder the translation of the dust removal brush while ensuring that the gap at the bottom of the hollow pole is sealed.

[0022] In some embodiments, the plug is made of rubber or silicone.

[0023] In the above technical solution, by setting the material of the plug to include rubber or silicone, the plug can be made elastic, thereby reducing the damage to the hollow pole during the process of inserting the plug into the opening gap at the bottom of the hollow pole, and improving the sealing performance of the gap.

[0024] In some embodiments, the dust removal device further includes a vibration assembly, which is connected to the dust removal brush and configured to vibrate the dust removal brush; the first driving assembly is also connected to the vibration assembly and configured to drive the dust removal brush and the vibration assembly to move together in a first direction.

[0025] In the above technical solution, by setting up a dust removal device including a vibration component, high-frequency vibration can be used to make the detachable welding slag and the adsorbed welding slag at the weld mark being cleaned fall off, and the dust removal brush can be made to vibrate and move during the process of cleaning the welding slag, thereby improving the cleaning efficiency and cleaning effect.

[0026] In some embodiments, the vibration assembly includes a vibration motor and a mounting shaft, the vibration motor is disposed outside the dust cover, one end of the mounting shaft is mounted on the vibration motor, and the other end extends into the dust cover and is connected to the dust brush.

[0027] In the above technical solution, the vibration of the dust removal brush is achieved by setting a vibration component including a vibration motor and a mounting shaft. The device is simple, easy to install, and easy to implement.

[0028] In some embodiments, the dust removal device further includes an exhaust assembly and an installation cavity; the exhaust assembly is connected to the installation cavity, the end of the dust cover away from the port is connected to the installation cavity, the side wall of the installation cavity at the end away from the dust cover has a through hole, the installation axis extends through the through hole into the dust cover, and the through hole extends along the first direction.

[0029] In the above technical solution, the exhaust assembly can exhaust air while the dust brush is lightly sweeping the welding slag, so as to form a negative pressure in the installation cavity and the dust hood, thereby allowing the loosened welding slag to enter the exhaust assembly; the installation cavity is connected between the dust hood and the exhaust assembly, and can provide a buffer space to reduce the risk of damage to the dust brush and / or battery cell preform in the dust hood caused by excessive negative pressure; the side wall of the installation cavity at one end away from the dust hood has a through hole, and the through hole allows the installation shaft to pass through, so that it can move in the first direction and drive the dust brush to move along the first direction.

[0030] In some embodiments, the installation cavity has an air outlet connected to the air extraction assembly; along the first direction, the air outlet and the air inlet of the dust cover are located on opposite sides of the dust cover and the installation cavity.

[0031] In the above technical scheme, by arranging an air outlet in the installation cavity, the gas in the dust hood and the installation cavity can be extracted through the exhaust component; further combined with arranging an air inlet in the dust hood, the air in the environment can continuously enter the dust hood and the installation cavity for ventilation during the dust removal process, so that the air flow can continuously carry away the welding slag, and can reduce the risk of damage to the battery cell preform caused by excessive negative pressure in the dust hood due to excessive air extraction by the exhaust component during the dust removal process; along the first direction, the air outlet and the air inlet of the dust hood are located on opposite sides of the dust hood and the installation cavity, that is, on opposite sides of the dust brush, so that the gas flows from one side of the dust brush to the other side, making it easier to carry away the welding slag of the dust brush.

[0032] In some embodiments, the side wall of the installation cavity facing away from the dust cover has two flexible shielding members; along a third direction perpendicular to the first direction, the two flexible shielding members are respectively arranged on opposite sides of the through hole and spliced ​​together to block the through hole.

[0033] In the above technical solution, two flexible shielding members are provided on the side wall of the installation cavity facing away from the dust cover, and the two flexible shielding members are spliced ​​together to block the through hole, so that when the installation shaft moves along the first direction in the through hole, the through hole can be covered by the two flexible shielding members, thereby reducing the risk of airflow entering the installation cavity from the through hole, and allowing the airflow to enter the installation cavity from the air inlet as much as possible, which is conducive to taking away the welding slag of the dust brush.

[0034] In some embodiments, the flexible shielding member is a brush.

[0035] In the above technical solution, by setting the flexible shielding member as a brush, the welding slag on the installation shaft passing through the penetration hole can be further cleaned or adsorbed, thereby reducing the welding slag adsorbed on the installation shaft and reducing the risk of welding slag splashing into the interior of the battery cell preform during vibration of the installation shaft.

[0036] In some embodiments, the ends of the brushes have magnetic members, the magnetic members at the ends of two brushes attract each other, and the mounting shaft comprises ferromagnetic material.

[0037] In the above technical solution, by setting the end of the brush to have a magnetic part, and the magnetic parts at the ends of the two brushes attract each other, after the installation shaft passes, the two flexible shielding parts are closed as soon as possible under the action of magnetic attraction. By setting the installation shaft to include ferromagnetic material, the permanent magnet at the end of the brush is attracted to the installation shaft wherever the installation shaft reaches, so as to better block the penetration hole and reduce the risk of airflow entering.

[0038] In some embodiments, a cover plate is sleeved on the installation shaft, and the cover plate is configured to be able to move along the first direction with the installation shaft and cover the through hole while moving.

[0039] In the above technical solution, a cover plate is provided on the installation shaft, and the cover plate is configured to be able to move along the first direction with the installation shaft and cover the penetration hole while moving, so that the penetration hole can be sealed higher and better to reduce the risk of airflow entering.

[0040] In some embodiments, the dust removal device further includes an axial drive assembly; the axial drive assembly is connected to the mounting shaft, and the axial drive assembly is configured to drive the dust removal brush to extend and retract axially along the mounting shaft.

[0041] In the above technical solution, the dust removal device includes an axial drive assembly, and the axial drive assembly can drive the dust removal brush to extend and retract along the axial direction of the installation axis. After the dust removal is completed, the drive assembly can drive the installation axis to move the dust removal brush away from the battery cell preform, so as to utilize the negative pressure in the dust removal cover to clean the residual welding slag on the dust removal brush. After the dust removal device and the battery cell preform are released from installation, there is no need to additionally clean the dust removal brush and the dust removal cover, thereby reducing the risk of contaminating other battery cell preforms when the dust removal device is used to clean other battery cell preforms next time.

[0042] In some embodiments, the dust removal device further includes a second drive component, which is connected to the dust removal component and the vibration component, and the second drive component is configured to drive the dust removal component and the vibration component to move in a second direction; the second direction intersects with the first direction.

[0043] In the above technical solution, by setting up a dust removal device including a second drive component, and the second drive component can drive the dust removal component and the vibration component to move along the second direction, the dust removal component can be matched and installed with the battery cell preform that needs to be cleaned, the operation is simple, the manual installation steps are reduced, and the degree of automation is improved.

[0044] In some embodiments, the first direction and the second direction are perpendicular to each other and parallel to the horizontal direction.

[0045] In the above technical solution, by setting the first direction and the second direction to be perpendicular to each other and parallel to the horizontal direction, the dust removal device in the present application can clean the horizontally placed battery cell preforms.

[0046] In some embodiments, the dust removal device further includes a control circuit; the control circuit is electrically connected to the vibration component, the first drive component, the second drive component, the air extraction component, and the axial drive component respectively; the control circuit is configured as follows:

[0047] In response to receiving a cleaning instruction, the dust removal cover is evacuated by the exhaust assembly to form a negative pressure, and the dust removal assembly is driven by the second driving assembly to move from an initial position to a preset position toward the battery cell preform along the second direction;

[0048] In response to the dust removal assembly moving to the preset position, the dust removal brush is vibrated by the vibration assembly and the dust removal assembly is driven to move back and forth along a first direction by the first driving assembly to clean the battery cell preform;

[0049] In response to the completion of cleaning, the dust removal assembly is driven by the second drive assembly to return from the preset position to the initial position along the second direction, and the dust removal brush is controlled by the axial drive assembly to retract from the original position toward the interior of the dust removal cover along the axial direction of the mounting axis and maintain it for a preset time before extending to the original position.

[0050] In the above technical solution, by setting up a control circuit to control the operation of the vibration component, the first drive component, the second drive component, the exhaust component and the axial drive component, the current can be accurately controlled to ensure the normal operation of the entire dust removal device, and it can also serve as a safety protection circuit and a conversion circuit.

[0051] In some embodiments, the dust removal device includes two symmetrically and spaced-apart dust removal components, and the first drive component, the vibration component, the axial drive component, the second drive component, the exhaust component and / or the installation cavity that respectively drive the two dust removal components and / or the dust removal brushes to move.

[0052] In the above technical solution, by setting two symmetrical and spaced dust removal components, and a first drive component and a second drive component, a vibration component, an axial drive component, an exhaust component and / or an installation cavity that respectively drive the two dust removal components and / or the dust removal brushes to move, the welding slag on the two hollow poles in the battery cell preform can be cleaned at the same time, thereby improving the cleaning efficiency.

[0053] In order to solve the above technical problems, in a second aspect, another technical solution adopted in the present application is to provide a battery production system, wherein the battery production system includes a welding device and a dust removal device, wherein the dust removal device is the dust removal device provided in any one of the above embodiments.

[0054] In the above technical solution, by setting up a dust removal device including a dust removal component and a first drive component, the dust removal component includes a dust removal brush, and the first drive component is configured to be able to drive the dust removal brush to move along a first direction, the dust removal brush can be moved while cleaning the welding slag, so that the welding slag on the hollow pole of the battery cell preform can be removed from a larger area; further, the dust removal brush can achieve the cleaning of strip-type weld marks, thereby improving the cleaning effect of the dust removal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0056] Figure 1 It is a schematic diagram of the structure of a battery cell prefabricated part;

[0057] Figure 2 yes Figure 1 A partial structural schematic diagram of a battery cell preform;

[0058] Figure 3 is a schematic diagram of the structure of a dust removal device provided in some embodiments of the present application;

[0059] Figure 4 yes Figure 3 A schematic diagram of the structure of the dust removal device from another perspective;

[0060] Figure 5 It is a schematic diagram of the structure of the dust cover, the plug and the installation cavity provided in some embodiments of the present application;

[0061] Figure 6 It is a schematic diagram of the structure of the dust cover, the plug and the installation cavity provided by other embodiments;

[0062] Figure 7 is a schematic diagram of the structure of the installation cavity provided in some embodiments of the present application;

[0063] Figure 8 is a schematic diagram of the structure of a dust removal device provided in other embodiments of the present application;

[0064] Fig. 9 It is a schematic diagram of the structure of a battery production system provided in some embodiments of the present application.

[0065] Description of Figure Numbers:

[0066] 1-dust removal device, 10-dust removal assembly, 11-dust brush, 12-dust cover, 120-side wall of dust cover, 121-air inlet, 122-port, 123-long side, 124-short side, 13-flexible protective cover, 14-plug, 140-surface of plug close to dust brush, 20-first drive assembly, 21-cylinder mounting plate, 22-transverse cylinder, 23-transverse slide rail, 30-vibration assembly, 31-vibration motor, 32-mounting shaft, 40-exhaust assembly, 50-mounting cavity, 51-side wall of the mounting cavity away from the dust cover, 52 -through hole, 53-air outlet, 54-flexible shielding member, 60-axial drive assembly, 61-axial transverse cylinder, 62-axial transverse slider, 70-second drive assembly, 71-support plate, 72-power mechanism, 73-first slide rail, 80-second direction transverse barrier, 100-dust cover mounting plate, 200-control circuit, 1000-battery production system, 2-welding device, 3-clamp, 2000-battery monomer preform, 2100-hollow pole, 2200-gap, 2300-pole ear, 2400-shell, 2500-battery cell. DETAILED DESCRIPTION

[0067] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0068] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0069] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0070] In the description of the embodiments of the present application, the technical terms "first", "second", "third", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two (including two), such as two, three, etc., unless otherwise clearly and specifically defined, and similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0071] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0072] In the description of the embodiments of the present application, the orientation or position relationship indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" are based on the relative orientation or position relationship between the components in a certain specific posture (as shown in the drawings) shown in the drawings. They are only for the convenience of describing the embodiments of 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 cannot be understood as a limitation on the embodiments of the present application.

[0073] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0074] In the present application, battery cells may include lithium-ion batteries, sodium-ion batteries or magnesium-ion batteries, etc. Battery cells may be cylindrical, flat or in other shapes, etc. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells. Battery cell preforms refer to the structure of battery cells before welding the poles. For the convenience of explanation, the following embodiments are described by taking lithium-ion batteries as an example.

[0075] In the field of new energy, lithium-ion batteries are one of the focuses of high-tech development because of their advantages such as high voltage, high capacity, low size, no memory effect, no pollution, small size, low internal resistance, low self-discharge, and many cycles.

[0076] In the production process of lithium-ion batteries, welding is an important link. For example, the traditional battery cell includes a shell, a battery cell, a transfer plate and a top end cover; the battery cell has a tab, and the top end cover is provided with an electrode column; the battery cell and the transfer plate are loaded into the shell from the top port of the shell, and the top end cover seals the top of the shell. During the production process, the tab is welded to the transfer plate first, and then the transfer plate is welded to the electrode column. Since the welding process of the electrode column and the transfer plate of the traditional battery cell produces a spot weld mark, the dust removal brush does not need to be moved during the dust removal process.

[0077] In order to meet the market demand, the applicant developed a new battery cell. Figure 1 and Figure 2 ,in Figure 1 It is a schematic diagram of the structure of a new battery cell prefabricated part developed by the applicant. Figure 2 yes Figure 1 Schematic diagram of the partial structure of the battery cell preform. The new battery cell preform 2000 includes a shell 2400, a battery cell 2500, a bottom end cover (not shown) and a hollow pole 2100; wherein the battery cell 2500 is loaded into the shell 2400 from the bottom port of the shell 2400, and the bottom end cover seals the bottom of the shell 2400; the hollow pole 2100 is embedded in the top wall of the shell 2400, and the hollow pole 2100 includes an annular side wall and a bottom wall, and the bottom wall of the hollow pole 2100 has an opening (not shown); the battery cell 2500 has a pole ear 2300, and the pole ear 2300 is inserted into the hollow pole 2100 from the opening of the bottom wall of the hollow pole 2100, and is welded to the bottom wall of the hollow pole 2100 after being bent. The hollow pole 2100 of the new battery cell preform 2000 is directly welded to the pole tab 2300, so the welding process produces a strip-shaped weld mark, and during the dust removal process, the dust removal brush needs to move back and forth along the width direction of the pole tab 2300. In addition, there is a gap 2200 between the pole tab 2300 and the side wall of the bottom wall opening of the hollow pole 2100, and a large amount of welding slag and other substances will be generated during the laser welding process. Due to the small size of the welding slag, it is easy to be adsorbed by structures such as pole pieces, or fall into the interior of the battery cell preform 2000 through the gap 2200 of the battery cell preform 2000 to cause pollution, affecting the use effect or service life of the battery. Therefore, cleaning the welding slag after welding is a technical problem that needs to be solved urgently.

[0078] In order to solve one or more of the above-mentioned technical problems, an embodiment of the present application provides a dust removal device, which includes a dust removal component and a first drive component. The dust removal component includes a dust removal brush, and the first drive component is connected to the dust removal brush and is configured to drive the surface dust removal brush to move along a first direction; wherein, since the dust removal brush can move while cleaning the welding slag, the welding slag on the hollow pole of the battery cell preform can be removed from a larger area. Furthermore, the dust removal brush can clean the strip-type weld marks, thereby improving the cleaning effect of the dust removal device.

[0079] The present application is described in detail below with reference to the accompanying drawings and embodiments.

[0080] See also Figure 3 and Figure 4 ,in, Figure 3 is a schematic structural diagram of a dust removal device 1 provided in some embodiments of the present application; Figure 4 yes Figure 3 A schematic structural diagram of the dust removal device from another perspective.

[0081] The dust removal device 1 provided in the present application includes a dust removal component 10 and a first driving component 20. The dust removal component 10 includes a dust removal brush 11. The first driving component 20 is connected to the dust removal brush 11 and is configured to drive the dust removal brush 11 to move along the first direction X.

[0082] The dust removal assembly 10 is configured to clean the welding slag on the battery cell preform 2000, wherein the cleaning method can be physical cleaning or chemical cleaning, wherein physical cleaning refers to directly cleaning the welding slag without changing the molecular structure of the welding slag, such as negative pressure suction; chemical cleaning refers to destroying the chemical structure of the welding slag by chemical reaction to dissolve or melt the welding slag. Considering that the battery cell preform 2000 is not damaged as much as possible, the embodiment of the present application uses physical cleaning to clean the welding slag.

[0083] Please also see Figure 1 and Figure 2 The dust removal brush 11 can collect and clean the welding slag that falls on or is adsorbed on the hollow pole 2100 of the battery cell preform 2000. The dust removal brush 11 can be made of soft materials such as rubber, silicone, plastic, pig bristle, etc. to reduce the damage of the dust removal brush 11 to the battery cell preform 2000 during the cleaning process.

[0084] The first driving assembly 20 is used to provide power for the dust removal assembly 10 to drive the dust removal assembly 10 to move along the first direction X, wherein the first direction X is related to the arrangement of the battery cell preform 2000, as long as the welding slag in the battery cell preform 2000 can be cleaned. In some embodiments of the present application, the shape of the hollow pole 2100 of the battery cell preform 2000 may be a racetrack, a circle, an ellipse, a rectangle or a positive direction. When the shape of the hollow pole 2100 of the battery cell preform 2000 is a racetrack or a rectangle, the first direction X may be the extension direction of the long side of the cross section of the hollow pole 2100, so that when the dust removal brush 11 moves along the first direction X, the coverage area of ​​the dust removal brush 11 is larger and the number of back and forth movements is less; when the shape of the hollow pole 2100 of the battery cell preform 2000 is a circle, the first direction X may be the extension direction of the diameter of the hollow pole 2100; when the shape of the hollow pole 2100 of the battery cell preform 2000 is a square, the first direction X may be the extension direction of any side. The following embodiments are described by taking as an example that the shape of the hollow pole 2100 of the battery cell preform 2000 is a runway shape, the long side of the cross section of the hollow pole 2100 is in the horizontal direction and the short side is in the vertical direction, and the first direction X is the extension direction of the long side of the cross section of the hollow pole 2100. That is, the battery cell preform 2000 is arranged parallel to the horizontal direction, and the top wall of the shell 2400 is arranged perpendicular to the horizontal direction, so as to reduce the risk of welding slag entering the interior of the battery cell preform 2000 under the action of gravity after welding.

[0085] Furthermore, in some embodiments, the first drive assembly 20 includes a cylinder mounting plate 21, a transverse cylinder 22 and a transverse slider (not shown); wherein the transverse cylinder 22 is mounted on the cylinder mounting plate 21, and the piston rod of the transverse cylinder 22 is connected to the transverse slider through a cylinder connecting block; the cylinder mounting plate 21 is provided with transverse slide rails 23 on opposite sides of the transverse cylinder 22 along the moving direction of the piston rod, and the transverse sliders are respectively arranged on the corresponding transverse slide rails 23.

[0086] In some embodiments, the dust removal assembly 10 further includes a dust removal cover 12 , and the dust removal brush 11 is disposed in the dust removal cover 12 and is configured to be able to move back and forth along the first direction X in the dust removal cover 12 .

[0087] Specifically, the shape and size of the dust cover 12 match the shape and size of the hollow pole 2100. The dust cover 12 is configured to cover the hollow pole 2100 of the battery cell preform 2000, for example, it is sleeved on the outside of the hollow pole 2100 cover, and the hollow pole 2100 of the battery cell preform 2000 can be isolated from the outside, reducing the risk of splashing or scattering welding slag to other parts or environments during the cleaning process of the dust removal component 10, thereby reducing pollution; on the other hand, the dust cover 12 also limits the moving range of the dust removal brush 11, which can reduce the contact between the dust removal brush 11 and other parts, thereby reducing the scattering of welding slag on the dust removal brush 11. Further, in some embodiments, the dust removal device 1 includes a dust removal cover mounting plate 100, and the dust removal component 10 can be set on the cylinder mounting plate 21 through the dust removal cover mounting plate 100.

[0088] Please also see Figure 5 and Figure 6 ,in Figure 5 It is a schematic diagram of the structure of the dust cover 12, the plug 14 and the installation cavity 50 provided in some embodiments of the present application; Figure 6 It is a schematic structural diagram of the dust cover 12, the plug 14 and the installation cavity 50 provided in other embodiments.

[0089] In some embodiments, the side wall 120 of the dust cover 12 has an air inlet 121. Specifically, the dust cover 12 is a hollow cylindrical body with openings at both ends, and the air inlet 121 can be located at any position of the annular side wall of the hollow cylindrical body.

[0090] The side wall 120 of the dust cover 12 refers to a ring-shaped plate with a certain thickness that is curled and surrounded to form an internal accommodation space, and at least one end thereof has an opening. The air inlet 121 is opened on the side wall 120 of the dust cover 12 and penetrates the side wall 120. The air inlet 121 allows external air to enter the dust cover 12, and then the welding slag swept by the dust brush 11 flows with the gas, so as to achieve the purpose of cleaning the welding slag.

[0091] Furthermore, in some embodiments, the port 122 of the dust cover 12 is provided with a flexible protective cover 13 .

[0092] The port 122 of the dust cover 12 is an opening formed at the end of the side wall 120 of the dust cover 12, and the port 122 of the dust cover 12 is used to insert the hollow pole 2100 into the dust cover 12. The flexible protective cover 13 can surround the port 122 of the dust cover 12, which can protect the port 122 of the dust cover 12 on the one hand, and can also reduce the damage of the port 122 of the dust cover 12 to the hollow pole 2100 or other components of the battery cell preform 2000 during the process of aligning and installing the dust cover 12 to the battery cell preform 2000.

[0093] In some embodiments, the port 122 of the dust cover 12 includes two long sides 123 and two short sides 124 , which are arranged opposite to each other. The long sides 123 extend along the first direction X, and the short sides 124 are connected to the two long sides 123 , respectively.

[0094] Among them, the long side 123 of the port 122 is a straight side parallel to the first direction X, and the short side 124 of the port 122 is a curved side protruding outward from the port 122 of the dust cover 12, so that the shape of the port 122 of the dust cover 12 matches the shape of the hollow pole 2100 of the battery cell preform 2000, so that the dust cover 12 can just cover the hollow pole 2100 of the battery cell preform 2000, and neither of them will fall off easily, and the hollow pole 2100 of the battery cell preform 2000 will not be exposed.

[0095] In some embodiments, the dust removal assembly 10 further includes a plug 14 , which is disposed in the dust removal cover 12 .

[0096] The plug 14 is configured to be pressed onto the inside of the hollow pole 2100 of the battery cell preform 2000 to block the open gap 2200 at the bottom of the hollow pole 2100 of the battery cell preform 2000 .

[0097] In the embodiment of the present application, a plug 14 is arranged in the dust removal cover 12. The plug 14 can be pressed onto the interior of the hollow pole 2100 of the battery cell preform 2000 to block the open gap 2200 at the bottom of the hollow pole 2100 of the battery cell preform 2000, thereby reducing the risk of welding slag entering the interior of the battery cell preform 2000 through the open gap 2200 at the bottom of the hollow pole 2100.

[0098] In some embodiments, one end of the plug 14 extends out of the port 122 of the dust cover 12 to facilitate insertion into the open gap 2200 at the bottom of the hollow pole 2100 and passing through the gap 2200, thereby reducing the risk of welding slag entering the interior of the battery cell preform 2000 and causing contamination.

[0099] Further, in some of the embodiments, the plug 14 is spaced apart from the inner wall surface of the dust cover 12 and extends along the first direction X. Preferably, the dust brush 11 is located at the bottom of the plug 14, wherein the bottom is the side of the plug 14 close to the ground. In order to further reduce the risk of welding slag entering the interior of the battery cell preform 2000 under the action of gravity after welding, when the battery cell preform 2000 is arranged parallel to the horizontal direction, the pole ear 2300 is located at the bottom of the gap 2200, that is, the pole ear 2300 is located on the side of the gap 2200 close to the ground. By locating the dust brush 11 at the bottom of the plug 14, the plug 14 blocks the gap 2200, and the dust brush 11 can clean the welding slag around the pole ear 2300, further reducing the risk of welding slag falling, and will not hinder the movement of the dust brush 11 along the first direction X.

[0100] Furthermore, in some of the embodiments, the surface 140 of the plug 14 close to the dust removal brush 11 is a plane, and the dust removal brush 11 is cylindrical and is tangent to or spaced from the plane.

[0101] The dust brush 11 is cylindrical, and compared with other shapes, such as a cuboid, prism or pyramid, it has the least resistance to air when moving, and because it has no edges or corners, it is easier to clean corners. The surface 140 of the plug 14 close to the dust brush 11 is a plane and is tangent to or spaced apart from the dust brush 11, so that the dust brush 11 can be translated along the extension direction of the plane of the plug 14, and the plug 14 will not hinder the translation of the dust brush 11 while ensuring that the gap 2200 at the bottom of the hollow pole 2100 is sealed. Preferably, the surface 140 of the plug 14 close to the dust brush 11 is a plane and is tangent to the dust brush 11, so that the dust brush 11 has a larger cleaning area.

[0102] Furthermore, in some embodiments, the material of the plug 14 includes rubber or silicone. The rubber or silicone material can make the plug 14 elastic, thereby reducing the damage to the hollow pole 2100 during the plug 14 is inserted into the gap 2200 at the bottom of the hollow pole 2100, and can also improve the sealing performance of the gap 2200.

[0103] In some embodiments, the dust removal device 1 further includes a vibration assembly 30, which is connected to the dust removal brush 11 and is configured to vibrate the dust removal brush 11; the first drive assembly 20 is also connected to the vibration assembly 30 and is configured to drive the dust removal brush 11 and the vibration assembly 30 to move along the first direction X together.

[0104] Among them, the vibration component 30 can use high-frequency vibration to make the detachable welding slag and the adsorbed welding slag fall off the cleaned welding mark, and can make the dust removal brush 11 vibrate and move during the process of cleaning the welding slag, thereby improving the cleaning efficiency and cleaning effect.

[0105] The vibration assembly 30 can be implemented by a motor, which is also called an electric motor, and is an electromagnetic device that realizes electrical energy conversion or transmission according to the law of electromagnetic induction. Specifically, in a specific embodiment, the vibration assembly 30 includes a vibration motor 31 and a mounting shaft 32, the vibration motor 31 is arranged outside the dust cover 12, one end of the mounting shaft 32 is mounted on the vibration motor 31, and the other end extends into the dust cover 12 and is connected to the dust brush 11. When the dust brush 11 and the vibration assembly 30 move together in the first direction X, the plug 14 and the dust cover 12 remain stationary.

[0106] The mounting shaft 32 connects the dust removal brush 11 and the vibration motor 31, so that the vibration motor 31 provides power for the vibration of the dust removal brush 11. The embodiment of the present application realizes the vibration of the dust removal brush 11 by setting the vibration assembly 30 including the vibration motor 31 and the mounting shaft 32. The device is simple, easy to install, and easy to implement.

[0107] Further, please see Figure 7 , Figure 7 It is a schematic diagram of the structure of the installation cavity provided in some embodiments of the present application.

[0108] The dust removal device 1 further includes an exhaust component 40 and an installation cavity 50; the exhaust component 40 is connected to the installation cavity 50, and the end of the dust cover 12 away from the port is connected to the installation cavity 50. The side wall 51 of the installation cavity 50 at the end away from the dust cover 12 has a through hole 52, and the installation shaft 32 extends through the through hole 52 into the dust cover 12, or is connected to the dust brush 11 in the dust cover 12; the through hole 52 extends along the first direction X.

[0109] The exhaust assembly 40 is configured to exhaust air when the dust brush 11 lightly sweeps the welding slag, so as to form a negative pressure in the installation cavity 50 and the dust cover 12, thereby allowing the loose welding slag to enter the exhaust assembly 40. In some embodiments of the present application, the exhaust assembly 40 can be implemented by a vacuum device.

[0110] The installation cavity 50 is connected between the dust cover 12 and the exhaust assembly 40, and can provide a buffer space to reduce the risk of excessive negative pressure causing damage to the dust brush 11 and / or the battery cell preform 2000 in the dust cover 12. The side wall 51 of the installation cavity 50 at one end away from the dust cover 12 has a through hole 52, and the through hole 52 allows the installation shaft 32 to pass through, so that the installation shaft 32 can move along the first direction X, and drive the dust brush 11 to move along the first direction X together.

[0111] In some embodiments, the mounting cavity 50 has an air outlet 53 connected to the exhaust assembly 40 ; preferably, along the first direction X, the air outlet 53 and the air inlet 121 of the dust cover 12 are located on opposite sides of the dust cover 12 and the mounting cavity 50 .

[0112] Among them, the air outlet 53 is an opening that penetrates the side wall 51 of the installation cavity 50, and the gas in the dust cover 12 and the installation cavity 50 can be extracted through the exhaust assembly 40 through the air outlet 53 of the installation cavity 50. Further, by providing the air outlet 53 in the installation cavity 50 and the air inlet 121 in the dust cover 12, the air in the environment can be continuously introduced into the dust cover 12 and the installation cavity 50 for ventilation during the dust removal process, so that the air flow can continuously take away the welding slag, and the risk of damage to the battery cell preform 2000 caused by excessive negative pressure in the dust cover 12 caused by excessive air extraction by the exhaust assembly 40 during the dust removal process can be reduced. Along the first direction X, the air outlet 53 and the air inlet 121 of the dust cover 12 are located on opposite sides of the dust cover 12 and the installation cavity 50, that is, on opposite sides of the dust brush 11, so that the gas flows from one side of the dust brush 11 to the other side, making it easier to take away the welding slag of the dust brush 11.

[0113] In some embodiments, the side wall 51 of the installation cavity 50 facing away from the dust cover 12 has two flexible shielding members 54; along a third direction Z perpendicular to the first direction X, the two flexible shielding members 54 are respectively arranged on opposite sides of the through hole 52 and spliced ​​together to block the through hole 52.

[0114] The flexible shielding member 54 is a deformable or bendable member. Here, the first direction X is taken as the horizontal direction for example, and the third direction Z is the vertical direction, which can also be considered as the up and down direction. The two flexible shielding members 54 are respectively arranged on the opposite sides of the through hole 52, and are spliced ​​to each other to block the through hole 52, so that when the installation shaft 32 moves in the through hole 52 along the first direction X, the through hole 52 can be covered by the two flexible shielding members 54, reducing the risk of airflow entering the installation cavity 50 from the through hole 52, so that the airflow enters the installation cavity 50 from the air inlet 121 as much as possible, which is conducive to taking away the welding slag of the dust removal brush 11.

[0115] Furthermore, in a specific embodiment, the flexible shielding member 54 is a brush, which can further clean or absorb the welding slag on the installation shaft 32 passing through the through hole 52, thereby reducing the welding slag absorbed on the installation shaft 32 and reducing the risk of welding slag splashing into the interior of the battery cell preform 2000 during the vibration of the installation shaft 32.

[0116] In some embodiments, the ends of the brushes have magnetic members (not shown), and the magnetic members at the ends of the two brushes attract each other, so that after the installation shaft 32 passes, the two flexible shielding members 54 close as quickly as possible under the effect of magnetic attraction.

[0117] The magnetic component is a component with magnetic attraction, a component that can generate magnetic attraction during use or a component that can be attracted to a component with magnetic attraction, such as a permanent magnet.

[0118] In some of the embodiments, the mounting shaft 32 includes ferromagnetic material, so that wherever the mounting shaft 32 goes, the permanent magnet at the end of the brush is attracted to the mounting shaft 32, thereby better sealing the penetration hole 52 and reducing the risk of airflow entering.

[0119] In some embodiments, a cover plate (not shown) is sleeved on the mounting shaft 32, and the cover plate is configured to move along the first direction X with the mounting shaft 32, and cover the through hole 52 while moving. The use of a cover plate can better block the through hole 52 and reduce the risk of airflow entering.

[0120] In some embodiments, the dust removal device 1 further includes an axial drive assembly 60 ; the axial drive assembly 60 is connected to the mounting shaft 32 , and the axial drive assembly 60 is configured to be able to drive the dust removal brush 11 to extend and retract axially along the mounting shaft 32 .

[0121] The axial drive assembly 60 refers to an assembly that drives along the axial direction of the installation shaft 32, such as a motor or a cylinder, that is, the axial drive assembly 60 can drive the dust removal brush 11 to extend and retract along the axial direction of the installation shaft 32, and the axial direction of the installation shaft 32 is parallel to the second direction Y and perpendicular to the third direction Z. In some embodiments, the axial drive assembly 60 may include an axial traverse cylinder 61 and an axial traverse slider 62.

[0122] After the dust removal is completed, the axial drive assembly 60 can drive the installation shaft 32 to move with the dust removal brush 11 in the direction away from the battery cell preform 2000, so that the dust removal brush 11 moves to the inside of the dust removal cover 12 or the inside of the installation cavity 50, and the negative pressure in the dust removal cover 12 is used to clean the residual welding slag on the dust removal brush 11. After the dust removal device 1 and the battery cell preform 2000 are released from installation, there is no need to additionally clean the dust removal brush 11 and the dust removal cover 12, thereby reducing the risk of contaminating other battery cell preforms 2000 when the dust removal device 1 is used to clean other battery cell preforms 2000 next time.

[0123] In some embodiments, the dust removal device 1 further includes a second drive component 70, which is connected to the dust removal component 10 and the vibration component 30, and the second drive component 70 is configured to drive the dust removal component 10 and the vibration component 30 to move along a second direction Y; the second direction Y intersects with the first direction X.

[0124] The second driving assembly 70 is used to provide power for the movement of the dust removal assembly 10 and the vibration assembly 30. In some embodiments, the second driving assembly 70 may include a support plate 71, a power mechanism 72 and a first slide rail 73, the first slide rail 73 and the dust cover mounting plate 100 are respectively arranged on both sides of the support plate 71, the power mechanism 72 is installed on the dust cover mounting plate 100, and is configured to drive the dust removal assembly 10 to move along the second direction Y by driving the dust cover mounting plate 100.

[0125] In this way, the dust removal assembly 10 can be matched and installed with the battery cell preform 2000 that needs to be cleaned, which is simple to operate, reduces the steps of manual installation, and improves the degree of automation.

[0126] In some embodiments, the first direction X and the second direction Y are perpendicular to each other and parallel to the horizontal direction, that is, the second drive assembly 70 and the second drive assembly 70 are transverse drive assemblies. Therefore, the dust removal device 1 in the present application can clean the battery cell preform 2000 placed laterally (ie, horizontally).

[0127] Furthermore, in some embodiments, the dust removal device 1 further includes a second direction Y transverse movement barrier 80, and the dust removal assembly 10 is arranged on the second direction Y transverse movement barrier 80, and the second direction Y transverse movement barrier 80 is configured to limit the distance that the dust removal assembly 10 moves in a direction close to the battery cell preform 2000, so that the dust removal assembly 10 stops after moving to a preset position in a direction close to the battery cell preform 2000, thereby reducing the risk of damaging the battery cell preform 2000 due to excessive movement of the dust removal assembly 10.

[0128] See also Figure 8 , Figure 8 It is a schematic diagram of the structure of the dust removal device provided in other embodiments of the present application.

[0129] The dust removal device 1 further includes a control circuit 200, wherein the control circuit 200 is electrically connected to the vibration assembly 30, the first drive assembly 20, the second drive assembly 70, the air extraction assembly 40, and the axial drive assembly 60 respectively.

[0130] The control circuit 200 refers to a circuit for controlling mechanical and electrical equipment, which may include a PCB board and a chip, etc. The control circuit 200 may be configured to: in response to receiving a cleaning instruction, exhaust the dust cover 12 through the exhaust assembly 40 to form a negative pressure, and drive the dust removal assembly 10 to move from the initial position to the battery cell preform 2000 to a preset position along the second direction Y through the second drive assembly 70; in response to the dust removal assembly 10 moving to the preset position, vibrate the dust removal brush 11 through the vibration assembly 30 and drive the dust removal assembly 10 to move back and forth along the first direction X through the first drive assembly 20 to clean the battery cell preform 2000; in response to the completion of cleaning, drive the dust removal assembly 10 back to the initial position from the preset position along the second direction Y through the second drive assembly 70, and control the dust removal brush 11 to shrink from the original position to the inside of the dust cover 12 along the axial direction of the mounting shaft 32 through the axial drive assembly 60 and extend to the original position after being held for a preset time.

[0131] Therefore, the present application can control the operation of the vibration assembly 30, the first drive assembly 20, the second drive assembly 70, the vacuum assembly 40 and the axial drive assembly 60 by setting up a control circuit 200, can accurately control the current, ensure the normal operation of the entire dust removal device 1, and can also serve as a safety protection circuit and a conversion circuit.

[0132] Please continue to see Figure 3 and Figure 4 In some embodiments, the dust removal device 1 includes two symmetrical and spaced dust removal components 10, and a first drive component 20, a vibration component 30, an axial drive component 60, a second drive component 70, a suction component 40 and / or a mounting cavity 50 for respectively driving the two dust removal components 10 and / or the dust removal brush 11 to move, so that the welding slag on the two hollow poles 2100 in the battery cell preform 2000 can be cleaned at the same time, thereby improving the cleaning efficiency. The two dust removal components 10 can share the first drive component 20 and the second drive component 70.

[0133] Please also see Fig. 9 , Fig. 9 1 is a schematic diagram of the structure of a battery production system 1000 provided in some embodiments of the present application. The battery production system 1000 includes a dust removal device 1, a welding device 2 and a clamp 3.

[0134] The dust removal device 1 is located downstream of the welding device 2; the clamp 3 is used to fix the battery cell preform 2000, and the clamp 3 passes through the welding device 2 and the dust removal device 1 in sequence, and brings the battery cell preform 2000 to the workstation of the welding device 2 and the workstation of the dust removal device 1 respectively. The welding device 2 is used to weld the hollow pole 2100 and the pole ear 2300 in the battery cell preform 2000. The dust removal device 1 is the dust removal device 1 provided in any of the above embodiments, and is used to clean the battery cell preform 2000 after welding.

[0135] The embodiment of the present application includes a dust removal device 1 including a dust removal component 10 and a first drive component 20, the dust removal component 10 includes a dust removal brush 11, and the first drive component 20 is configured to be able to drive the dust removal brush 11 to move along the first direction X; wherein, since the dust removal brush 11 can move while cleaning the welding slag, the welding slag on the hollow pole 2100 of the battery cell preform 2000 can be removed from a larger area, and further, the dust removal brush 11 can achieve the cleaning of strip-type weld marks, thereby improving the cleaning effect of the dust removal device 1.

[0136] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0137] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0138] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A dust removal device, comprising: A dust removal assembly, including a dust removal brush; A first driving assembly, connected to the dust removal brush and configured to drive the dust removal brush to move along a first direction; A dust cover, wherein the dust brush is disposed in the dust cover and is configured to be able to move back and forth in the dust cover along the first direction; It is characterized in that the port of the dust cover includes two long sides arranged opposite to each other and two short sides arranged opposite to each other, the long sides extend along the first direction, and the short sides are respectively connected to the two long sides.

2. A dust removal device, comprising: A dust removal assembly, including a dust removal brush; A first driving assembly, connected to the dust removal brush and configured to drive the dust removal brush to move along a first direction; A dust cover, wherein the dust brush is disposed in the dust cover and is configured to be able to move back and forth in the dust cover along the first direction; It is characterized in that the dust removal component further includes a plug, and the plug is arranged in the dust removal cover.

3. The dust removal device according to claim 2, characterized in that: The side wall of the dust removal cover is provided with an air inlet.

4. The dust removal device according to claim 2, characterized in that: The port of the dust removal cover is provided with a flexible protective sleeve.

5. The dust removal device according to claim 2, characterized in that: The port of the dust cover includes two long sides arranged opposite to each other and two short sides arranged opposite to each other, the long sides extend along the first direction, and the short sides are respectively connected to the two long sides.

6. The dust removal device according to claim 2, characterized in that: One end of the plug extends out of the port of the dust cover.

7. The dust removal device according to claim 2, characterized in that: The plug is spaced apart from the inner wall surface of the dust cover and extends along the first direction, and the dust removal brush is located at the bottom of the plug.

8. The dust removal device according to claim 7, characterized in that: The surface of the plug close to the dust removal brush is a plane, and the dust removal brush is cylindrical and is tangent to or spaced from the plane.

9. The dust removal device according to claim 2, characterized in that: The material of the plug includes rubber or silicone.

10. The dust removal device according to any one of claims 2 to 9, characterized in that: The dust removal device further includes a vibration assembly, which is connected to the dust removal brush and is configured to vibrate the dust removal brush; the first driving assembly is also connected to the vibration assembly and is configured to drive the dust removal brush and the vibration assembly to move together along the first direction.

11. A dust removal device, comprising: A dust removal assembly, including a dust removal brush; A first driving assembly, connected to the dust removal brush and configured to drive the dust removal brush to move along a first direction; It is characterized in that the dust removal device further includes a vibration component, which is connected to the dust removal brush and is configured to vibrate the dust removal brush; the first driving component is also connected to the vibration component and is configured to drive the dust removal brush and the vibration component to move together along the first direction.

12. The dust removal device according to claim 11, characterized in that: The dust removal assembly further includes a dust removal cover, the dust removal brush is arranged in the dust removal cover and is configured to be able to move back and forth in the dust removal cover along the first direction; the vibration assembly includes a vibration motor and a mounting shaft, the vibration motor is arranged outside the dust removal cover, one end of the mounting shaft is installed on the vibration motor, and the other end extends into the dust removal cover and is connected to the dust removal brush.

13. The dust removal device according to claim 12, characterized in that: The dust removal device further includes an exhaust assembly and an installation cavity; the exhaust assembly is connected to the installation cavity, the end of the dust cover away from the port is connected to the installation cavity, the side wall of the installation cavity at the end away from the dust cover has a through hole, the installation shaft extends through the through hole into the dust cover, and the through hole extends along the first direction.

14. The dust removal device according to claim 13, characterized in that: The installation cavity has an air outlet communicated with the air extraction assembly; along the first direction, the air outlet and the air inlet of the dust cover are located on opposite sides of the dust cover and the installation cavity.

15. The dust removal device according to claim 13, characterized in that: The side wall of the installation cavity facing away from the dust cover has two flexible shielding members; along a third direction perpendicular to the first direction, the two flexible shielding members are respectively arranged on opposite sides of the penetration hole and spliced ​​with each other to block the penetration hole.

16. The dust removal device according to claim 15, characterized in that: The flexible shielding member is a brush.

17. The dust removal device according to claim 16, characterized in that: The ends of the brushes are provided with magnetic parts, the magnetic parts at the ends of two brushes attract each other, and the mounting shaft comprises ferromagnetic material.

18. The dust removal device according to claim 13, characterized in that: A cover plate is sleeved on the installation shaft, and the cover plate is configured to be able to move along the first direction with the installation shaft and cover the penetration hole while moving.

19. The dust removal device according to claim 13, characterized in that: The dust removal device further comprises an axial drive assembly; the axial drive assembly is connected to the mounting shaft, and the axial drive assembly is configured to be able to drive the dust removal brush to extend and retract along the axial direction of the mounting shaft.

20. The dust removal device according to claim 19, characterized in that: The dust removal device further includes a second driving assembly, which is connected to the dust removal assembly and the vibration assembly, and the second driving assembly is configured to drive the dust removal assembly and the vibration assembly to move along a second direction; the second direction intersects with the first direction.

21. The dust removal device according to claim 20, characterized in that: The first direction and the second direction are perpendicular to each other and parallel to the horizontal direction.

22. The dust removal device according to claim 20, characterized in that: The dust removal device further includes a control circuit; the control circuit is electrically connected to the vibration assembly, the first drive assembly, the second drive assembly, the air extraction assembly, and the axial drive assembly respectively; the control circuit is configured as follows: In response to receiving a cleaning instruction, the dust removal cover is evacuated by the exhaust assembly to form a negative pressure, and the dust removal assembly is driven by the second driving assembly to move from an initial position to a preset position toward the battery cell preform along the second direction; In response to the dust removal assembly moving to the preset position, the dust removal brush is vibrated by the vibration assembly and the dust removal assembly is driven to move back and forth along a first direction by the first driving assembly to clean the battery cell preform; In response to the completion of cleaning, the dust removal assembly is driven by the second drive assembly to return from the preset position to the initial position along the second direction, and the dust removal brush is controlled by the axial drive assembly to retract from the original position toward the interior of the dust removal cover along the axial direction of the mounting axis and maintain it for a preset time before extending to the original position.

23. The dust removal device according to claim 20, characterized in that: The dust removal device includes two symmetrical and spaced-apart dust removal components, and the first drive component, the vibration component, the second drive component, the exhaust component and / or the installation cavity that respectively drive the two dust removal components and / or the dust removal brushes to move.

24. A battery production system, comprising a welding device and a dust removal device, characterized in that: The dust removal device is a dust removal device according to any one of claims 1-23.

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