Dust removal equipment and battery production system

Abstract

This application provides a dust removal device and a battery production system, wherein the dust removal device comprises a dust removal assembly and a first drive assembly, the dust removal assembly comprising a dust removal brush, and the first drive assembly being connected to the dust removal brush and configured to drive the dust removal brush to move along a first direction. In this manner, the dust removal brush can move while cleaning welding slag, thereby removing welding slag from the hollow electrode columns of the battery cell preform over a larger area, and furthermore, the dust removal brush can achieve cleaning of strip-shaped weld marks, thereby further improving the cleaning effect of the dust removal device.

Description

Technical Field

[0001] [Cross - reference to Related Applications] This application claims priority based on Chinese Patent Application No. 202323280379X, proposed on November 30, 2023, and all of the content described therein is incorporated herein by reference.

[0002] This application relates to the field of batteries, and particularly to dust removal devices and battery production systems.

Background Art

[0003] Welding is an important stage in the battery production process, and substances such as a large amount of welding slag are generated during processes such as laser welding. The size of the welding slag is relatively small, which is likely to cause contamination of production equipment and affect the use effect or service life of production equipment. Therefore, the cleaning of welding slag after welding is a technical problem that urgently needs to be solved.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The main technical problem to be solved by this application is to provide a dust removal device and a battery production system that can efficiently clean the welding slag generated by welding.

Means for Solving the Problems

[0005] To solve the above technical problems, according to a first aspect, one technical solution adopted by the present application is to provide a dust removal device, the dust removal device comprising a dust removal assembly, a first drive assembly, and a dust removal cover, wherein the dust removal assembly comprises a dust removal brush, the first drive assembly is connected to the dust removal brush and configured to drive the dust removal brush to move along a first direction, the dust removal brush is installed within the dust removal cover and configured to reciprocate within the dust removal cover along the first direction, the port of the dust removal cover comprises two opposing long sides and two opposing short sides, the long sides extending along the first direction, and the short sides connecting the two long sides, respectively.

[0006] In the above proposed technology, the dust removal device includes a dust removal assembly and a first drive assembly, the dust removal assembly includes a dust removal brush, and the first drive assembly is configured to drive the dust removal brush so that it moves along a first direction, so that the dust removal brush can move while cleaning welding slag, thereby removing welding slag from the hollow electrode columns of the battery cell preform over a larger area, and furthermore, the dust removal brush can achieve cleaning of strip-shaped welding marks, further improving the cleaning effect of the dust removal device, and the dust removal device further includes a dust removal cover, and the port of the dust removal cover includes two long sides extending along a first direction and two short sides connecting the two long sides, so that the shape of the port of the dust removal cover matches the shape of the hollow electrode columns of the battery cell preform, so that the dust removal cover can just cover the hollow electrode columns of the battery cell preform, and the two will not easily come apart, and the hollow electrode columns of the battery cell preform will not be exposed.

[0007] To solve the above technical problems, according to a second aspect, another technical solution adopted by the present application is to provide a dust removal device, the dust removal device comprising a dust removal assembly, a first drive assembly, and a dust removal cover, wherein the dust removal assembly comprises a dust removal brush, the first drive assembly is connected to the dust removal brush and configured to drive the dust removal brush to move along a first direction, the dust removal brush is installed within the dust removal cover and configured to reciprocate within the dust removal cover along the first direction, and the dust removal assembly further comprises a plug, the plug is installed within the dust removal cover.

[0008] In the above proposed technology, by installing a dust removal cover and restricting the dust removal brush to the inside of the dust removal cover, the hollow electrode columns of the battery cell preform are isolated from the outside, reducing the risk of welding slag scattering or becoming dispersed to other parts or the environment during the process of the dust removal assembly cleaning the welding slag, thereby reducing contamination. Furthermore, the dust removal cover also limits the range of movement of the dust removal brush, reducing contact between the dust removal brush and other parts, and further reducing the dispersion of welding slag on the dust removal brush. By installing a plug inside the dust removal cover, the plug can be pressed into the inside of the hollow electrode columns of the battery cell preform, sealing the gap in the opening at the bottom of the hollow electrode columns of the battery cell preform, thereby reducing the risk of welding slag passing through the gap in the opening at the bottom of the hollow electrode columns and entering the inside of the battery cell preform.

[0009] In some of these embodiments, the side wall of the dust removal cover has an air intake.

[0010] In the above proposed technology, by installing an air intake on the side wall of the dust removal cover, external gas enters the dust removal cover, and the welding slag swept up by the dust removal brush flows along with the gas, thereby achieving the objective of organizing the welding slag.

[0011] In some of these embodiments, a flexible protective sleeve is installed in the port of the dust removal cover.

[0012] In the above proposed technology, by installing a flexible protective sleeve over the port of the dust removal cover, the port of the dust removal cover can be protected, while at the same time reducing damage to the hollow pole columns or other components of the battery cell preform by the port of the dust removal cover during the process of aligning and attaching the dust removal cover to the battery cell preform.

[0013] In some of these embodiments, the port of the dust cover includes two opposing long sides and two opposing short sides, the long sides extending along the first direction and the short sides connecting the two long sides, respectively.

[0014] In the above proposed technology, the shape of the dust removal cover's port is matched to the shape of the hollow electrode post of the battery cell preform by setting the dust removal cover's port to include two long sides extending along the first direction and two short sides connecting the two long sides, so that the dust removal cover can just cover the hollow electrode post of the battery cell preform, so that they do not easily come apart and the hollow electrode post of the battery cell preform is not exposed.

[0015] In some of these embodiments, one end of the plug extends from the port of the dust cover.

[0016] In the above proposed technology, one end of the plug extends from the port of the dust removal cover, allowing it to be easily inserted into the gap of the opening at the bottom of the hollow electrode column, reducing the risk of welding slag entering the inside of the battery cell preform and causing contamination.

[0017] In some of these embodiments, the plug is positioned at a distance from the inner wall surface of the dust cover and extends along the first direction, and the dust brush is located at the bottom of the plug.

[0018] In the above proposed design, the plug is installed at a distance from the inner wall surface of the dust removal cover and extends along a first direction, and the dust removal brush is located at the bottom of the plug, thereby allowing the plug to seal the gap, the dust removal brush to clear the welding slag around the tab, further reducing the risk of welding slag falling, and without hindering the movement of the dust removal brush along the first direction.

[0019] In some of these embodiments, the surface of the plug closest to the dust brush is flat, the dust brush is cylindrical and is installed either in contact with the flat surface or at a distance from it.

[0020] In the above proposed technology, by setting the dust removal brush in a cylindrical shape, the resistance with air when the dust removal brush moves can be minimized, and because there are no corners, cleaning of corner areas is made easier. Furthermore, the surface of the plug closest to the dust removal brush is flat and is installed either in contact with the dust removal brush or at a distance from it, thereby allowing the dust removal brush to move in translation along the extension of the plane of the plug, and the plug ensures that the gap of the opening at the bottom of the hollow pole column is sealed while not hindering the translational movement of the dust removal brush.

[0021] In some of these embodiments, the material of the plug includes rubber or silica gel.

[0022] In the above proposed technology, by setting the plug material to include rubber or silica gel, the plug can be made elastic, and furthermore, damage to the hollow pole column during the process of inserting the plug into the gap at the bottom of the hollow pole column can be reduced, and the sealing performance of the gap can also be improved.

[0023] In some of these embodiments, the dust removal device further includes a vibration assembly, the vibration assembly is connected to the dust removal brush and is configured to vibrate the dust removal brush, the first driving assembly is further connected to the vibration assembly and is configured to drive the dust removal brush and the vibration assembly to move along a first direction together.

[0024] In the above technical solution, by setting the dust removal device to include a vibration assembly, the weld slag that can be detached and the adsorbed weld slag in the weld marks cleaned using high-frequency vibration can be made to fall, and the dust removal brush moves while vibrating during the process of cleaning the weld slag, so that the cleaning efficiency and the cleaning effect can be improved.

[0025] To solve the above technical problem, according to a third aspect, another technical solution adopted by the present application is to provide a dust removal device, the dust removal device includes a dust removal assembly and a first driving assembly, the dust removal assembly includes a dust removal brush, the first driving assembly is connected to the dust removal brush and is configured to drive the dust removal brush to move along a first direction, the dust removal device further includes a vibration assembly, the vibration assembly is connected to the dust removal brush and is configured to vibrate the dust removal brush, the first driving assembly is further connected to the vibration assembly and is configured to drive the dust removal brush and the vibration assembly to move along the first direction together.

[0026] In the above technical solution, by setting the dust removal device to include a vibration assembly, the weld slag that can be detached and the adsorbed weld slag in the weld marks cleaned using high-frequency vibration can be made to fall, and the dust removal brush moves while vibrating during the process of cleaning the weld slag, so that the cleaning efficiency and the cleaning effect can be improved.

[0027] In some of these embodiments, the dust removal assembly further includes a dust removal cover, the dust removal brush is installed within the dust removal cover, and is configured to reciprocate along the first direction within the dust removal cover. The vibration assembly includes a vibration motor and a mounting shaft. The vibration motor is installed outside the dust removal cover. One end of the mounting shaft is mounted on the vibration motor, and the other end extends into the dust removal cover and is connected to the dust removal brush.

[0028] In the above technical solution, by installing a dust removal cover and restricting the dust removal brush within the dust removal cover, the hollow pole of the battery cell preform is isolated from the outside, reducing the risk of welding slag scattering or spreading to other parts or the environment during the process of the dust removal assembly cleaning the welding slag, reducing contamination, and the dust removal cover also limits the movement range of the dust removal brush, reducing the contact between the dust removal brush and other parts, and further reducing the scattering of welding slag on the dust removal brush. By setting the vibration assembly to include a vibration motor and a mounting shaft, the vibration of the dust removal brush is realized, the device is simple, convenient to install, and easy to achieve.

[0029] In some of these embodiments, the dust removal device further includes an air extraction assembly and a mounting cavity. The air extraction assembly communicates with the mounting cavity. The end of the dust removal cover away from the port communicates with the mounting cavity. The side wall of the end of the mounting cavity away from the dust removal cover has a through hole. The mounting shaft passes through the through hole and extends into the dust removal cover. The through hole extends along the first direction.

[0030] In the above proposed design, the extraction assembly extracts air during the process in which the dust removal brush lightly sweeps away welding slag, creating negative pressure within the mounting cavity and dust removal cover, and further loosening the welding slag can enter the extraction assembly. The mounting cavity is connected between the dust removal cover and the extraction assembly, providing a buffer space and reducing the risk of excessive negative pressure damaging the dust removal brush and / or battery cell preform inside the dust removal cover. The side wall of the mounting cavity at the end away from the dust removal cover has a perforated hole through which the mounting shaft passes and moves along a first direction, allowing the dust removal brush to move along the first direction as well.

[0031] In some of these embodiments, the mounting cavity has an exhaust port communicating with the extraction assembly, and along the first direction, the exhaust port and the intake port of the dust removal cover are located on opposite sides of the dust removal cover and the mounting cavity.

[0032] In the above proposed technology, by installing an exhaust port in the mounting cavity, gas in the dust removal cover and mounting cavity can be discharged by the extraction assembly. Furthermore, by installing an intake port in the dust removal cover accordingly, ambient air can continuously enter the dust removal cover and mounting cavity during the dust removal process, allowing the airflow to continuously carry away welding slag. Additionally, the risk of excessive extraction by the extraction assembly during the dust removal process, resulting in excessive negative pressure inside the dust removal cover and damage to the battery cell preform, can be reduced. Along the first direction, the exhaust port and the intake port of the dust removal cover are located on opposite sides of the dust removal cover and mounting cavity, i.e., on opposite sides of the dust removal brush, allowing gas to flow from one side of the dust removal brush to the other, making it easier to carry away welding slag from the dust removal brush.

[0033] In some of these embodiments, the side wall of the mounting cavity away from the dust cover has two flexible shielding members, and the two flexible shielding members are installed on opposite sides of the drilled hole, respectively, along a third direction perpendicular to the first direction, and are stitched together to shield the drilled hole.

[0034] In the above proposed technology, the mounting cavity has two flexible shielding members on the side wall away from the dust removal cover, and the two flexible shielding members are set to be stitched together to shield the drilled hole. As the mounting shaft moves through the drilled hole along the first direction, the drilled hole is covered by the two flexible shielding members, reducing the risk of airflow entering the mounting cavity from the drilled hole. This allows as much airflow as possible to enter the mounting cavity from the intake port, which is advantageous for carrying away welding slag for the dust removal brush.

[0035] In some of these embodiments, the flexible shielding member is a brush.

[0036] In the above proposed technology, by setting the flexible shielding member to a brush, welding slag on the mounting shaft passing through the drilled hole can be further cleaned or adsorbed, reducing the amount of welding slag adsorbed on the mounting shaft and reducing the risk of welding slag scattering into the battery cell preform during the vibration process of the mounting shaft.

[0037] In some of these embodiments, the ends of the brush have magnetic members, the magnetic members at the ends of the two brushes attract each other, and the mounting shaft contains a ferromagnetic material.

[0038] In the above proposed technology, a magnetic member is provided at the end of the brush, and the magnetic members at the ends of the two brushes are set to attract each other. As a result, after the mounting shaft passes, the two flexible shielding members are quickly closed by magnetic attraction. Furthermore, by setting the mounting shaft to include a ferromagnetic material, the permanent magnets at the ends of the brushes are attracted to the mounting shaft wherever the shaft passes, better sealing the drilled hole and reducing the risk of airflow entering.

[0039] In some of these embodiments, a cover plate is fitted onto the mounting shaft, and the cover plate is movable along the mounting shaft in the first direction, and is configured to cover the drilled hole as it moves.

[0040] In the above proposed technology, a cover plate is fitted onto the mounting shaft, and the cover plate is movable along the mounting shaft in the first direction. By configuring it to cover the drilled hole as it moves, the drilled hole can be better sealed, and the risk of airflow entering can be reduced.

[0041] In some of these embodiments, the dust removal device further includes an axial drive assembly, which is connected to the mounting shaft and is configured to drive the dust removal brush to extend and retract along the axial direction of the mounting shaft.

[0042] In the above proposed technology, the dust removal device includes an axial drive assembly, and the axial drive assembly is configured to drive the dust removal brush so that it extends and retracts along the axial direction of the mounting shaft. After dust removal is complete, the drive assembly drives the mounting shaft so that it moves away from the battery cell preform together with the dust removal brush, utilizing the negative pressure inside the dust removal cover to clean any remaining welding slag on the dust removal brush. This eliminates the need for additional cleaning of the dust removal brush and dust removal cover after the dust removal device is dismounted from the battery cell preform, and further reduces the risk of contaminating other battery cell preforms when the dust removal device is used to clean them the next time.

[0043] In some of these embodiments, the dust removal device further includes a second drive assembly, the second drive assembly being connected to the dust removal assembly and the vibration assembly, and the second drive assembly being configured to drive the dust removal assembly and the vibration assembly to move along a second direction, the second direction intersecting the first direction.

[0044] In the above proposed technology, the dust removal device includes a second drive assembly, and the second drive assembly is configured to drive the dust removal assembly and the vibrating assembly so that they move along a second direction, thereby allowing the dust removal assembly to be matched and attached to the battery cell preform that needs to be cleaned, making operation easy, reducing the number of manual installation steps, and improving the degree of automation.

[0045] In some of these embodiments, the first direction and the second direction are perpendicular to each other and both are parallel to the horizontal direction.

[0046] In the above proposed technology, by setting the first direction and the second direction to be perpendicular to each other and both parallel to the horizontal direction, the dust removal device in this application becomes capable of cleaning battery cell preforms placed in the horizontal direction.

[0047] In some of these embodiments, the dust removal device further includes a control circuit, the control circuit being electrically connected to the vibration assembly, the first drive assembly, the second drive assembly, the extraction assembly, and the axial drive assembly, respectively, the control circuit In response to receiving a cleaning command, the extraction assembly extracts air from the dust removal cover to create a negative pressure, and the second drive assembly drives the dust removal 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 vibrating assembly vibrates the dust removal brush, and the first drive assembly drives the dust removal assembly to reciprocate along the first direction to clean the battery cell preform. In response to the completion of cleaning, the second drive assembly is configured to drive the dust removal assembly back to the initial position from the preset position along the second direction, and the axial drive assembly is configured to control the dust removal brush so that it retracts into the dust removal cover from its original position along the axial direction of the mounting shaft, is held for a preset time, and then protrudes back to its original position.

[0048] In the above proposed technology, by installing a control circuit, the operation of the vibration assembly, the first drive assembly, the second drive assembly, the extraction assembly, and the axial drive assembly can be controlled, the current can be precisely controlled, and the normal operation of the entire dust removal device can be ensured. It can also function as a safety protection circuit and a conversion circuit.

[0049] In some of these embodiments, the dust removal device includes two dust removal assemblies installed symmetrically and spaced apart, and a first drive assembly, a vibration assembly, an axial drive assembly, a second drive assembly, an extraction assembly, and / or a mounting cavity that drive the movement of the two dust removal assemblies and / or the dust removal brushes, respectively.

[0050] In the above proposed technology, by installing two dust removal assemblies symmetrically and spaced apart, and a first drive assembly and a second drive assembly, a vibration assembly, an axial drive assembly, an air extraction assembly, and / or a mounting cavity that drive the movement of the two dust removal assemblies and / or the dust removal brushes respectively, it is possible to simultaneously clean the welding slag on the two hollow electrode columns of a battery cell preform and improve cleaning efficiency.

[0051] To solve the above technical problems, according to a fourth aspect, a further technical solution adopted by the present application is to provide a battery production system, the battery production system comprising a welding device and a dust removal device, wherein the dust removal device is the dust removal device described in any one of the above embodiments.

[0052] In the above proposed technology, the dust removal device includes a dust removal assembly and a first drive assembly, the dust removal assembly includes a dust removal brush, and the first drive assembly is configured to drive the dust removal brush so that it moves along a first direction. This allows the dust removal brush to move while cleaning the welding slag, thereby removing welding slag from the hollow electrode columns of the battery cell preform over a larger area. Furthermore, the dust removal brush can clean strip-shaped weld marks, further improving the cleaning effect of the dust removal device. [Brief explanation of the drawing]

[0053] To more clearly illustrate the technical concepts in the embodiments of this application, the following is a brief introduction to the drawings that may be used in the description of the embodiments. It is obvious that the drawings in the following description are only a few embodiments of this application, and those skilled in the art can obtain other drawings based on these without expending any creative effort. [Figure 1] This is a schematic diagram of the structure of a battery cell preform. [Figure 2]Figure 1 is a schematic diagram of a part of the structure of a battery cell preform. [Figure 3] This is a schematic diagram of the structure of a dust removal device according to several embodiments of this application. [Figure 4] Figure 3 is a schematic diagram of the dust removal device from a different viewing angle. [Figure 5] This is a schematic diagram of the structure of a dust removal cover, plug, and mounting cavity according to some embodiments of this application. [Figure 6] This is a schematic diagram of the structure of a dust removal cover, plug, and mounting cavity according to several other embodiments. [Figure 7] This is a schematic diagram of the structure of a mounting cavity according to some embodiments of this application. [Figure 8] This is a schematic diagram of the structure of a dust removal device according to some other embodiments of this application. [Figure 9] This is a schematic diagram of the structure of a battery production system according to several embodiments of this application. [Modes for carrying out the invention]

[0054] The following clearly and completely describes the technical concepts in the embodiments of this application, linking them to the drawings of the embodiments. Clearly, the embodiments described are only a subset of the embodiments of this application, not all of them. All other embodiments derived from the embodiments of this application without the creative effort of a person skilled in the art are all within the scope of protection of this application.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art relating to the present application. The terms used herein are solely 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 description of the specification, claims, and drawings of this application are intentionally intended to cover non-exclusive “including.” For example, a process, method, system, product, or apparatus comprising a series of steps or units is not limited to the steps or units already listed, but may further include steps or units not selectively listed, or may further include other steps or units specific to those processes, methods, products, or apparatus.

[0056] The “Examples” as used herein mean that certain features, structures, or characteristics described in conjunction with the Examples may be included in at least one Example of this Application. The appearance of this phrase at each location in the Specification does not necessarily refer to the same Example, nor does it mean that each Example is mutually exclusive or alternative to the others. Those skilled in the art will understand, both explicitly and implicitly, that the Examples described herein can be combined with other Examples.

[0057] In the descriptions of the embodiments of this application, the technical terms "first," "second," "third," etc., are used solely to distinguish different subjects and should not be understood as indicating or suggesting relative importance or the number, specific order, or hierarchical relationship of the technical features shown. In the descriptions of the embodiments of this application, "multiple" means two or more (including two), for example, two, three, etc., and similarly, unless explicitly and specifically limited, "multiple sets" means two or more sets (including two sets), and "multiple sheets" means two or more sheets (including two sheets).

[0058] In the description of the embodiments of this application, the term "and / or" merely describes a relationship between related objects, indicating that three relationships may exist. For example, A and / or B may represent three cases: A alone, a combination of A and B, or B alone. In this specification, the letter " / " generally indicates that the preceding and succeeding related objects are in an "or" relationship.

[0059] In the description of the embodiments of this application, the orientations or positional relationships indicated by technical terms such as "center," "vertical direction," "horizontal direction," "length," "width," "thickness," "top," "bottom," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "clockwise," "counterclockwise," "axial direction," "radial direction," and "circumferential direction" refer to the relative orientations or positional relationships between each member in a specific orientation shown in the drawings (for example, as shown in the drawings). These terms are merely used to facilitate and simplify the description of the embodiments of this application and do not indicate or imply that the mentioned devices or elements have a specific orientation or must be configured and operated in a specific orientation. Therefore, they should not be understood as limitations on the embodiments of this application.

[0060] In the description of the embodiments of this application, unless otherwise explicitly defined or limited, technical terms such as "attachment," "connection," "bonding," and "fixing" should be understood in a broad sense. For example, they may refer to fixed connections, removable connections, integral connections, mechanical connections, electrical connections, direct connections, indirect connections via an intermediate medium, internal communication between two elements, or interaction relationships between two elements. Those skilled in the art will be able to understand the specific meaning of these terms in the embodiments of this application depending on the specific circumstances.

[0061] In this application, the battery cell may include lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, and the battery cell may have a cylindrical, flattened, or other shape. Generally, battery cells are divided into three types based on the packaging method: cylindrical battery cells, rectangular battery cells, and pouch battery cells. A battery cell preform is the structure of the battery cell before the electrode columns are welded. The following examples will be explained using a lithium-ion battery as an example for ease of explanation.

[0062] In the new energy sector, lithium-ion batteries have become a key focus of high-tech development due to their advantages such as high voltage, high capacity, low power consumption, no memory effect, no pollution, small volume, low internal resistance, low self-discharge, and high cycle life.

[0063] In the production process of lithium-ion batteries, welding is an important step. For example, a conventional battery cell includes a case, a battery core, an adapter, and a top end cap. Here, the battery core has tabs, and electrode posts are installed on the top end cap. The battery core and adapter are inserted into the case through a port at the top of the case, and the top end cap covers the top of the case. In the production process, the tabs and adapter are welded first, and then the adapter and electrode posts are welded. In the process of welding the electrode posts and adapter in a conventional battery cell, spot weld marks are generated, so there is no need to move the dust removal brush during the dust removal process.

[0064] To meet market demand, the applicant develops a new battery cell. Referring to Figures 1 and 2, where Figure 1 is a schematic diagram of the structure of the new battery cell preform developed by the applicant, and Figure 2 is a schematic diagram of a part of the structure of the battery cell preform of Figure 1. The new battery cell preform 2000 includes a case 2400, a battery core 2500, a bottom end cap (not shown), and a hollow pole column 2100, wherein the battery core 2500 is inserted into the case 2400 through a bottom port of the case 2400, the bottom end cap covers the bottom of the case 2400, the hollow pole column 2100 is fitted onto the top wall of the case 2400 and includes an annular side wall and a bottom wall, with an opening (not shown) in the bottom wall of the hollow pole column 2100, and the battery core 2500 has a tab 2300, which is inserted into the hollow pole column 2100 through an opening in the bottom wall of the hollow pole column 2100, and after being bent, is welded integrally with the bottom wall of the hollow pole column 2100. In the new battery cell preform 2000, the hollow electrode column 2100 is directly welded to the tab 2300. As a result, a band-shaped welding mark is generated during the welding process, and during the dust removal process, the dust removal brush needs to move back and forth along the width direction of the tab 2300. Furthermore, there is a gap 2200 between the tab 2300 and the side wall of the bottom wall opening of the hollow electrode column 2100. During processes such as laser welding, a large amount of welding slag and other substances are generated. The welding slag is relatively small in size and easily adheres to structures such as electrode plates, or it falls into the interior of the battery cell preform 2000 through the gap 2200, causing contamination and affecting the battery's effectiveness or service life. Therefore, cleaning the welding slag after welding is a technical problem that urgently needs to be solved.

[0065] To solve one or more of the above technical problems, embodiments of the present application provide a dust removal device comprising a dust removal assembly and a first drive assembly, wherein the dust removal assembly comprises a dust removal brush, and the first drive assembly is connected to the dust removal brush and configured to drive the dust removal brush to move along a first direction, wherein the dust removal brush can move while cleaning welding slag, thereby removing welding slag from the hollow electrode columns of the battery cell preform over a larger area, and furthermore, the dust removal brush can achieve cleaning of strip-shaped weld marks, thereby further improving the cleaning effect of the dust removal device.

[0066] The present application will be described in detail below, linking the drawings with embodiments.

[0067] Referring to Figures 3 and 4, where Figure 3 is a schematic diagram of the structure of the dust removal device 1 according to some embodiments of the present application, and Figure 4 is a schematic diagram of the dust removal device in Figure 3 from a different viewpoint.

[0068] The dust removal device 1 according to this application comprises a dust removal assembly 10 and a first drive assembly 20, the dust removal assembly 10 comprising a dust removal brush 11, and the first drive assembly 20 connected to the dust removal brush 11 and configured to drive the dust removal brush 11 to move along a first direction X.

[0069] Here, the dust removal assembly 10 is configured to clean the welding slag on the battery cell preform 2000, where the cleaning method may be physical cleaning or chemical cleaning, where physical cleaning means directly cleaning the welding slag without changing its molecular structure, for example by negative pressure suction, and chemical cleaning means dissolving or melting the welding slag by destroying its chemical structure through a chemical reaction. Considering the need to avoid damage to the battery cell preform 2000 as much as possible, in the embodiment of this application, the welding slag is cleaned by a physical cleaning method.

[0070] Referring to Figures 1 and 2, the dust removal brush 11 can collect and organize welding slag that has fallen or been adsorbed onto the hollow electrode columns 2100 of the battery cell preform 2000. The material of the dust removal brush 11 may be a soft material such as rubber, silica gel, plastic, or pig bristles to reduce the damage that the dust removal brush 11 inflicts on the battery cell preform 2000 during the cleaning process.

[0071] The first drive assembly 20 is used to power the dust removal assembly 10 and drive the dust removal assembly 10 to move along a first direction X, where the first direction X is related to the installation method of the battery cell preform 2000 and should be able to clean the welding slag in the battery cell preform 2000. In some embodiments of this application, the shape of the hollow pole column 2100 of the battery cell preform 2000 may be racetrack-shaped, circular, elliptical, rectangular, or square. If the shape of the hollow pole column 2100 of the battery cell preform 2000 is racetrack-shaped or rectangular, the first direction X may be the direction of extension of the longer side of the cross-section of the hollow pole column 2100 such that as the dust removal brush 11 moves along the first direction X, the coverage area of ​​the dust removal brush 11 widens and the number of reciprocating movements is reduced. If the shape of the hollow pole column 2100 of the battery cell preform 2000 is circular, the first direction X may be the direction of extension of the diameter of the hollow pole column 2100. If the shape of the hollow pole column 2100 of the battery cell preform 2000 is square, the first direction X may be the direction of extension of any side. The following embodiment is presented as an example in which the shape of the hollow pole column 2100 of the battery cell preform 2000 is racetrack-shaped, the longer side of the cross-section of the hollow pole column 2100 is horizontal and the shorter side is vertical, and the first direction X is the direction of extension of the longer side of the cross-section of the hollow pole column 2100. That is, the battery cell preform 2000 is installed parallel to the horizontal direction, and the top wall of the case 2400 is installed perpendicular to the horizontal direction, reducing the risk of welding slag entering the inside of the battery cell preform 2000 due to gravity after welding.

[0072] Furthermore, in some embodiments, the first drive assembly 20 includes a cylinder mounting plate 21, a lateral movement cylinder 22, and a lateral movement slider (not shown), where the lateral movement cylinder 22 is mounted on the cylinder mounting plate 21, the piston rod of the lateral movement cylinder 22 is connected to the lateral movement slider via a cylinder connection block, and lateral movement slide rails 23 are installed on opposite sides of the cylinder mounting plate 21 where the lateral movement cylinder 22 is located, along the direction of movement of the piston rod, and the lateral movement slider is mounted on the corresponding lateral movement slide rails 23.

[0073] In some embodiments, the dust removal assembly 10 further includes a dust removal cover 12, and a dust removal brush 11 is installed inside the dust removal cover 12 and configured to reciprocate within the dust removal cover 12 along a first direction X.

[0074] Specifically, the shape and size of the dust removal cover 12 are matched to the shape and size of the hollow pole column 2100, and the dust removal cover 12 is configured to cover the hollow pole column 2100 of the battery cell preform 2000, for example, fitted to the outside of the cover of the hollow pole column 2100, isolating the hollow pole column 2100 of the battery cell preform 2000 from the outside, reducing the risk of welding slag scattering or being scattered to other parts or the environment during the process in which the dust removal assembly 10 cleans the welding slag, thereby reducing contamination. At the same time, the dust removal cover 12 also limits the range of movement of the dust removal brush 11, reducing contact between the dust removal brush 11 and other parts, and further reducing the scattering of welding slag on the dust removal brush 11. Furthermore, in some embodiments, the dust removal device 1 may include a dust removal cover mounting plate 100, and the dust removal assembly 10 may be mounted on the cylinder mounting plate 21 via the dust removal cover mounting plate 100.

[0075] Referring to Figures 5 and 6, where Figure 5 is a schematic diagram of the structure of the dust removal cover 12, plug 14 and mounting cavity 50 according to some embodiments of the present application, and Figure 6 is a schematic diagram of the structure of the dust removal cover 12, plug 14 and mounting cavity 50 according to some other embodiments.

[0076] In some embodiments, the side wall 120 of the dust removal cover 12 has an air intake port 121. Specifically, the dust removal cover 12 is a hollow columnar body with both ends open, and the air intake port 121 may be located at any position on the annular side wall of the hollow columnar body.

[0077] Here, the side wall 120 of the dust removal cover 12 is an annular plate material of a certain thickness that is curved to surround the internal containment space, and has an opening at least at one end. The air intake port 121 is opened on the side wall 120 of the dust removal cover 12, penetrates the side wall 120, and through the air intake port 121, external gas enters the dust removal cover 12, and furthermore, the welding slag swept up by the dust removal brush 11 flows with the gas, thereby achieving the purpose of cleaning up the welding slag.

[0078] Furthermore, in some embodiments, a flexible protective sleeve 13 is installed on the port 122 of the dust removal cover 12.

[0079] Here, the port 122 of the dust removal cover 12 is an opening formed at the end of the side wall 120 of the dust removal cover 12, and the port 122 of the dust removal cover 12 is used to insert the hollow pole column 2100 into the dust removal cover 12. The flexible protective sleeve 13 can surround the port 122 of the dust removal cover 12, thereby protecting the port 122 of the dust removal cover 12, while also reducing damage to the hollow pole column 2100 or other components of the battery cell preform 2000 by the port 122 of the dust removal cover 12 during the process of aligning and attaching the dust removal cover 12 to the battery cell preform 2000.

[0080] In some embodiments, the port 122 of the dust cover 12 includes two opposing long sides 123 and two opposing short sides 124, the long sides 123 extending along a first direction X, and the short sides 124 connecting the two long sides 123 respectively.

[0081] Here, the longer side 123 of port 122 is a straight side parallel to the first direction X, and the shorter side 124 of port 122 is a curved side that protrudes outside port 122 of the dust cover 12, thereby matching the shape of port 122 of the dust cover 12 to the shape of the hollow pole column 2100 of the battery cell preform 2000, so that the dust cover 12 can just cover the hollow pole column 2100 of the battery cell preform 2000, so that they do not easily come apart and the hollow pole column 2100 of the battery cell preform 2000 is not exposed.

[0082] In some embodiments, the dust removal assembly 10 further includes a plug 14, which is installed inside the dust removal cover 12.

[0083] Here, the plug 14 is configured to be pressed into the hollow pole column 2100 of the battery cell preform 2000, thereby sealing the gap 2200 in the opening at the bottom of the hollow pole column 2100 of the battery cell preform 2000.

[0084] In the embodiment of this application, by installing the plug 14 inside the dust removal cover 12, the plug 14 can be pressed into the interior of the hollow pole column 2100 of the battery cell preform 2000, thereby sealing the gap 2200 at the bottom opening of the hollow pole column 2100 of the battery cell preform 2000, and reducing the risk of welding slag passing through the gap 2200 at the bottom opening of the hollow pole column 2100 and entering the interior of the battery cell preform 2000.

[0085] In some of these embodiments, one end of the plug 14 extends from the port 122 of the dust removal cover 12, allowing it to be easily inserted into the gap 2200 of the opening at the bottom of the hollow pole column 2100, reducing the risk of welding slag passing through the gap 2200 and causing contamination inside the battery cell preform 2000.

[0086] Furthermore, in some embodiments, the plug 14 is positioned at a distance from the inner wall surface of the dust removal cover 12 and extends along the first direction X. In some embodiments, the dust removal brush 11 is located at the bottom of the plug 14, where the bottom is the side of the plug 14 closer to the ground. To further reduce the risk of welding slag entering the inside of the battery cell preform 2000 by gravity after welding, when the battery cell preform 2000 is installed parallel to the horizontal direction, the tab 2300 is located at the bottom of the gap 2200, i.e., the tab 2300 is located on the side of the gap 2200 closer to the ground. By positioning the dust removal brush 11 at the bottom of the plug 14, the plug 14 can seal the gap 2200, clear the welding slag around the dust removal brush 11 tab 2300, further reducing the risk of welding slag falling, and without hindering the movement of the dust removal brush 11 along the first direction X.

[0087] Furthermore, in some of these embodiments, the surface 140 of the plug 14 closest to the dust removal brush 11 is flat, and the dust removal brush 11 is cylindrical and is installed either in contact with the flat surface or at a distance from it.

[0088] The dust removal brush 11 is cylindrical, and compared to other shapes such as a rectangular prism, prism, or pyramid, it has the least resistance to air when moving and has no corners, making it easy to clean corners. The surface 140 of the plug 14 closest to the dust removal brush 11 is flat and is installed either in contact with the dust removal brush 11 or at a distance from it, thereby allowing the dust removal brush 11 to move in translation along the extension of the plane of the plug 14, and the plug 14 ensures that the gap 2200 of the opening at the bottom of the hollow pole column 2100 is sealed while not hindering the translational movement of the dust removal brush 11. In some embodiments, by having the surface 140 of the plug 14 closest to the dust removal brush 11 be flat and in contact with the dust removal brush 11, the dust removal brush 11 has a larger cleaning area.

[0089] Furthermore, in some embodiments, the material of the plug 14 includes rubber or silica gel. Here, the rubber or silica gel material can give the plug 14 elasticity, and can also reduce damage to the hollow pole column 2100 during the process of inserting the plug 14 into the gap 2200 at the bottom opening of the hollow pole column 2100, and can also improve the sealing performance of the gap 2200.

[0090] In some embodiments, the dust removal device 1 further includes a vibrating assembly 30, which is connected to a dust removal brush 11 and configured to vibrate the dust removal brush 11, and a first drive assembly 20 is further connected to the vibrating assembly 30 and configured to drive the dust removal brush 11 and the vibrating assembly 30 together to move along a first direction X.

[0091] Here, the vibrating assembly 30 can use high-frequency vibrations to cause loose and adsorbed welding slag in the weld marks to fall off, and the dust removal brush 11 moves while vibrating during the process of cleaning the welding slag, thereby improving cleaning efficiency and cleaning effect.

[0092] The vibration assembly 30 may be implemented by a motor, also known as an electric motor, which is an electromagnetic device that converts or transmits electrical energy according to the law of electromagnetic induction. Specifically, in one embodiment of the invention, the vibration assembly 30 includes a vibration motor 31 and a mounting shaft 32, the vibration motor 31 being installed outside the dust removal cover 12, one end of the mounting shaft 32 being mounted on the vibration motor 31 and the other end extending into the dust removal cover 12 and connected to the dust removal brush 11. The plug 14 and the dust removal cover 12 remain stationary while the dust removal brush 11 and the vibration assembly 30 move together along a first direction X.

[0093] Here, 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 this application achieves vibration of the dust removal brush 11 by configuring the vibration assembly 30 to include the vibration motor 31 and the mounting shaft 32, resulting in a device that is simple, convenient to install, and easy to implement.

[0094] Furthermore, referring to Figure 7, Figure 7 is a schematic diagram of the structure of a mounting cavity according to some embodiments of this application.

[0095] The dust removal device 1 further includes an extraction assembly 40 and a mounting cavity 50, the extraction assembly 40 communicating with the mounting cavity 50, the end of the dust removal cover 12 away from the port communicating with the mounting cavity 50, the side wall 51 of the end of the mounting cavity 50 away from the dust removal cover 12 has a perforated hole 52, the mounting shaft 32 extends into the dust removal cover 12 through the perforated hole 52 or is connected to a dust removal brush 11 inside the dust removal cover 12, the perforated hole 52 extends along a first direction X.

[0096] Here, the extraction assembly 40 is configured to extract air during the process in which the dust removal brush 11 lightly sweeps away the welding slag, thereby creating a negative pressure within the mounting cavity 50 and the dust removal cover 12, and further allowing the loosened welding slag to enter the extraction assembly 40. In some embodiments of this application, the extraction assembly 40 can be realized by a vacuum device.

[0097] The mounting cavity 50 is connected between the dust removal cover 12 and the extraction assembly 40, providing a buffer space that reduces the risk of excessive negative pressure damaging the dust removal brush 11 and / or the battery cell preform 2000 inside the dust removal cover 12. The side wall 51 of the mounting cavity 50, at the end away from the dust removal cover 12, has a perforated hole 52 through which the mounting shaft 32 can pass, and the mounting shaft 32 can move along a first direction X, allowing the dust removal brush 11 to move along the first direction X as well.

[0098] In some embodiments, the mounting cavity 50 has an exhaust port 53 that communicates with the extraction assembly 40, and in some embodiments, along a first direction X, the exhaust port 53 and the intake port 121 of the dust removal cover 12 are located on opposite sides of the dust removal cover 12 and the mounting cavity 50.

[0099] Here, the exhaust port 53 is an opening that penetrates the side wall 51 of the mounting cavity 50, allowing the suction assembly 40 to discharge gas from the dust removal cover 12 and the mounting cavity 50 through the exhaust port 53 of the mounting cavity 50. Furthermore, by installing the exhaust port 53 in the mounting cavity 50 and the intake port 121 in the dust removal cover 12, air from the environment can continuously enter the dust removal cover 12 and the mounting cavity 50 during the dust removal process, allowing the airflow to continuously carry away the welding slag, and reducing the risk of excessive suction by the suction assembly 40 during the dust removal process, which could lead to excessive negative pressure inside the dust removal cover 12 and damage to the battery cell preform 2000. Along the first direction X, the exhaust port 53 and the intake port 121 of the dust removal cover 12 are located on opposite sides of the dust removal cover 12 and the mounting cavity 50, that is, on opposite sides of the dust removal brush 11, so that gas flows from one side of the dust removal brush 11 to the other, making it easier for welding slag on the dust removal brush 11 to be carried away.

[0100] In some embodiments, the side wall 51 of the mounting cavity 50 away from the dust cover 12 has two flexible shielding members 54, which are positioned on opposite sides of the drilled hole 52 along a third direction Z perpendicular to the first direction X, and are stitched together to shield the drilled hole 52.

[0101] The flexible shielding member 54 is a deformable or bendable component. Here, we will use the first direction X as an example where it is horizontal, and the third direction Z is vertical, which may also be considered as the up and down direction. The two flexible shielding members 54 are each installed on opposite sides of the drilled hole 52 and are stitched together to shield the drilled hole 52. As the mounting shaft 32 moves through the drilled hole 52 along the first direction X, the drilled hole 52 is covered by the two flexible shielding members 54, reducing the risk of airflow entering the mounting cavity 50 from the drilled hole 52. This allows as much airflow as possible to enter the mounting cavity 50 from the intake port 121, which is advantageous for carrying away welding slag to the dust removal brush 11.

[0102] Furthermore, in one embodiment of the invention, the flexible shielding member 54 is a brush, which can further clean or adsorb welding slag on the mounting shaft 32 passing through the perforated hole 52, thereby reducing the amount of welding slag adsorbed on the mounting shaft 32 and reducing the risk of welding slag scattering into the battery cell preform 2000 during the vibration process of the mounting shaft 32.

[0103] 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 mounting shaft 32 passes, the two flexible shielding members 54 close quickly due to magnetic attraction.

[0104] A magnetic component is a component that has magnetic attraction, a component that can generate magnetic attraction during use, or a component that is attracted to a component that has magnetic attraction, such as a permanent magnet.

[0105] In some of these embodiments, the mounting shaft 32 includes a ferromagnetic material, and wherever the mounting shaft 32 goes, the permanent magnet at the end of the brush is attracted to the mounting shaft 32, better sealing the drilled hole 52 and reducing the risk of airflow entering.

[0106] In some embodiments, a cover plate (not shown) is fitted onto the mounting shaft 32, and the cover plate is movable along the mounting shaft 32 in a first direction X, and is configured to cover the drilled hole 52 as it moves. By employing a cover plate, the drilled hole 52 is better sealed, and the risk of airflow entering is reduced.

[0107] In some embodiments, the dust removal device 1 further includes an axial drive assembly 60, which is connected to a mounting shaft 32 and is configured to drive the dust removal brush 11 to extend and retract along the axial direction of the mounting shaft 32.

[0108] Here, the axial drive assembly 60 is an assembly that drives along the axial direction of the mounting shaft 32, for example, an electric motor or cylinder, i.e., the axial drive assembly 60 can drive the dust removal brush 11 to extend and retract along the axial direction of the mounting shaft 32, the axial direction of the mounting shaft 32 is parallel to a second direction Y and perpendicular to a third direction Z. In some embodiments, the axial drive assembly 60 may include an axial lateral movement cylinder 61 and an axial lateral movement slider 62.

[0109] After dust removal is complete, the axial drive assembly 60 drives the mounting shaft 32 to move the dust brush 11 away from the battery cell preform 2000, thereby moving the dust brush 11 into the dust cover 12 or the mounting cavity 50, utilizing the negative pressure inside the dust cover 12 to clean any remaining weld slag on the dust brush 11. This eliminates the need for additional cleaning of the dust brush 11 and dust cover 12 after the dust removal device 1 is dismounted from the battery cell preform 2000, and further reduces the risk of contaminating other battery cell preforms 2000 when the dust removal device 1 is used to clean them next time.

[0110] In some embodiments, the dust removal device 1 further includes a second drive assembly 70, which is connected to the dust removal assembly 10 and the vibration assembly 30, and is configured to drive the dust removal assembly 10 and the vibration assembly 30 to move along a second direction Y, the second direction Y intersects with the first direction X.

[0111] A second drive 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 drive 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 removal cover mounting plate 100 being installed on either side of the support plate 71, and the power mechanism 72 being mounted on the dust removal cover mounting plate 100 and configured to drive the dust removal assembly 10 along a second direction Y by the dust removal cover mounting plate 100.

[0112] This method allows the dust removal assembly 10 to be matched and attached to the battery cell preform 2000 that needs to be cleaned, making operation easy, reducing the number of manual installation steps, and improving the degree of automation.

[0113] In some embodiments, the first direction X and the second direction Y are perpendicular to each other and both parallel to the horizontal direction, i.e., the second drive assembly 70 and the second drive assembly 70 are lateral movement drive assemblies. Therefore, the dust removal device 1 in this application can clean a battery cell preform 2000 that is placed laterally (i.e., horizontally).

[0114] Furthermore, in some embodiments, the dust removal device 1 further includes a second direction Y lateral movement barrier 80, the dust removal assembly 10 being mounted on the second direction Y lateral movement barrier 80, the second direction Y lateral movement barrier 80 being configured to limit the distance the dust removal assembly 10 moves along the direction closer to the battery cell preform 2000, the dust removal assembly 10 stopping after moving to a preset position along the direction closer to the battery cell preform 2000, and further reducing the risk of damage to the battery cell preform 2000 due to excessive movement of the dust removal assembly 10.

[0115] Referring to Figure 8, Figure 8 is a schematic diagram of the structure of a dust removal device according to some other embodiments of this application.

[0116] The dust removal device 1 further includes a control circuit 200, which is electrically connected to a vibration assembly 30, a first drive assembly 20, a second drive assembly 70, an extraction assembly 40, and an axial drive assembly 60, respectively.

[0117] The control circuit 200 is a circuit for controlling mechanical and electrical equipment, and may include a PCB board and chips. The control circuit 200 may be configured to, in response to receiving a cleaning command, bleed the dust removal cover 12 with the bleed assembly 40 to create a negative pressure, and drive the dust removal assembly 10 by the second drive assembly 70 to move from an initial position to a preset position on the battery cell preform 2000 along a second direction Y, and in response to the dust removal assembly 10 moving to the preset position, vibrate the dust removal brush 11 with the vibrating assembly 30, and drive the dust removal assembly 10 by the first drive assembly 20 to reciprocate along a first direction X to clean the battery cell preform 2000, and in response to the completion of cleaning, drive the dust removal assembly 10 by the second drive assembly 70 to return from the preset position to the initial position along the second direction Y, and control the dust removal brush 11 by the axial drive assembly 60 to retract into the dust removal cover 12 from its original position along the axial direction of the mounting shaft 32, hold for a preset time, and then protrude back to its original position.

[0118] Therefore, this application allows for the control of the operation of the vibration assembly 30, the first drive assembly 20, the second drive assembly 70, the extraction assembly 40, and the axial drive assembly 60 by installing the control circuit 200, accurately controlling the current and ensuring the normal operation of the entire dust removal device 1, and also performing the functions of a safety protection circuit and a conversion circuit.

[0119] Continuing to refer to Figures 3 and 4, in some embodiments, the dust removal device 1 includes two dust removal assemblies 10 installed symmetrically and spaced apart, and a first drive assembly 20, a vibration assembly 30, an axial drive assembly 60, a second drive assembly 70, an extraction assembly 40, and / or a mounting cavity 50 that drive the movement of the two dust removal assemblies 10 and / or dust removal brushes 11, respectively, thus enabling simultaneous cleaning of the welding slag on the two hollow pole columns 2100 in the battery cell preform 2000 and improving cleaning efficiency. The two dust removal assemblies 10 can share the first drive assembly 20 and the second drive assembly 70.

[0120] Referring to Figure 9, Figure 9 is a schematic diagram of the structure of a battery production system 1000 according to some embodiments of the present application. The battery production system 1000 includes a dust removal device 1, a welding device 2, and a jig 3.

[0121] Here, the dust removal device 1 is located downstream of the welding device 2, and the jig 3 is used to fix the battery cell preform 2000. The jig 3 passes through the welding device 2 and the dust removal device 1 in sequence, transporting 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 columns 2100 and tabs 2300 in the battery cell preform 2000. The dust removal device 1 is a dust removal device 1 according to any one of the above embodiments, and is used to clean the battery cell preform 2000 after welding.

[0122] In the embodiments of this application, the dust removal device 1 includes a dust removal assembly 10 and a first drive assembly 20, the dust removal assembly 10 includes a dust removal brush 11, and the first drive assembly 20 is configured to drive the dust removal brush 11 to move along a first direction X, where the dust removal brush 11 can move while cleaning welding slag, thereby removing welding slag from the hollow pole columns 2100 of the battery cell preform 2000 over a larger area, and furthermore, the dust removal brush 11 can achieve cleaning of strip-shaped weld marks, further improving the cleaning effect of the dust removal device 1.

[0123] In some embodiments of this application, it should be understood that the presented systems, apparatuses and methods may be implemented in other ways. For example, the embodiments of the apparatus described above are illustrative only, and the divisions of units are merely logical functional divisions. In actual implementation, there may be other division methods, for example, multiple units or assemblies may be combined or integrated with another system, or some features may be ignored or not implemented. Furthermore, the combinations or direct combinations or communication connections between those shown or discussed may be indirect combinations or communication connections by some interfaces, apparatuses or units, and may be electrical, mechanical, or in other forms.

[0124] Furthermore, each functional unit in each embodiment of this application may be integrated into a single processing unit, each unit may exist physically independently, or two or more units may be integrated into a single unit. The above-mentioned integrated unit may be implemented in hardware form or in the form of a software functional unit.

[0125] As stated above, these are merely embodiments of the present application and are not intended to limit the scope of the patent of this application. Any equivalent structure or equivalent flow transformation, or its direct or indirect application to other related technical fields, made using the contents of the specification and drawings of this application, is equally included within the scope of the patent protection of this application. [Explanation of Symbols]

[0126] 1- Dust removal device, 10- Dust removal assembly, 11- Dust removal brush, 12- Dust removal cover, 120- Side wall of dust removal cover, 121- Intake port, 122- Port, 123- Long side, 124- Short side, 13- Flexible protective sleeve, 14- Plug, 140- Surface of plug near dust removal brush, 20- First drive assembly, 21- Cylinder mounting plate, 22- Lateral movement cylinder, 23- Lateral movement slide rail, 30- Vibration assembly, 31- Vibration motor, 32- Mounting shaft, 40- Extraction assembly, 50- Mounting cavity, 51- Mounting cavity away from dust removal cover 52-Inverted end side wall, 53-Drilling hole, 54-Exhaust port, 60-Flexible shielding member, 61-Axial drive assembly, 62-Axial lateral movement cylinder, 70-Axial lateral movement slider, 71-Second drive assembly, 72-Support plate, 73-Power mechanism, 80-First slide rail, 100-Second directional lateral movement barrier, 100-Dust removal cover mounting plate, 200-Control circuit, 1000-Battery production system, 2-Welding equipment, 3-Jig, 2000-Battery cell preform, 2100-Hollow pole column, 2200-Gap, 2300-Tab, 2400-Case, 2500-Battery core.

Claims

1. A dust removal device, A dust removal assembly including a dust removal brush, A first drive assembly connected to the dust brush and configured to drive the dust brush to move along a first direction, A dust removal cover comprising a dust removal brush installed inside the dust removal cover and configured to move back and forth within the dust removal cover along the first direction, Herein, the dust removal device comprises a port of the dust removal cover including two opposing long sides and two opposing short sides, wherein the long sides extend along the first direction and the short sides connect the two long sides, respectively.

2. A dust removal device, A dust removal assembly including a dust removal brush, A first drive assembly connected to the dust brush and configured to drive the dust brush to move along a first direction, A dust removal cover comprising a dust removal brush installed inside the dust removal cover and configured to move back and forth within the dust removal cover along the first direction, Herein, the dust removal assembly further includes a plug, the plug being installed inside the dust removal cover, in a dust removal device.

3. The dust removal device according to claim 2, wherein the side wall of the dust removal cover has an air intake port.

4. The dust removal device according to claim 2, wherein a flexible protective sleeve is installed in the port of the dust removal cover.

5. The dust removal device according to claim 2, wherein the port of the dust removal cover includes two opposing long sides and two opposing short sides, the long sides extending along the first direction and the short sides connecting the two long sides, respectively.

6. The dust removal device according to claim 2, wherein one end of the plug extends from the port of the dust removal cover.

7. The dust removal device according to claim 2, wherein the plug is installed at a distance from the inner wall surface of the dust removal 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, wherein the surface of the plug closest to the dust removal brush is flat, and the dust removal brush is cylindrical and is installed in contact with or at a distance from the flat surface.

9. The dust removal device according to claim 2, wherein the material of the plug includes rubber or silica gel.

10. The dust removal device according to any one of claims 2 to 9, further comprising a vibrating assembly, the vibrating assembly being connected to the dust removal brush and configured to vibrate the dust removal brush, and the first drive assembly being further connected to the vibrating assembly and configured to drive the dust removal brush and the vibrating assembly together to move along the first direction.

11. A dust removal device, A dust removal assembly including a dust removal brush, Includes a first drive assembly connected to the dust brush and configured to drive the dust brush to move along a first direction, The dust removal device further includes a vibrating assembly, the vibrating assembly being connected to the dust removal brush and configured to vibrate the dust removal brush, and the first drive assembly being further connected to the vibrating assembly and configured to drive the dust removal brush and the vibrating assembly together to move along the first direction.

12. The dust removal device according to claim 11, wherein the dust removal assembly further includes a dust removal cover, the dust removal brush is installed inside the dust removal cover and configured to reciprocate within the dust removal cover along the first direction, and the vibration assembly includes a vibration motor and a mounting shaft, the vibration motor is installed outside the dust removal cover, one end of the mounting shaft is mounted 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, further comprising an extraction assembly and a mounting cavity, wherein the extraction assembly communicates with the mounting cavity, the end of the dust removal cover away from the port communicates with the mounting cavity, the side wall of the end of the mounting cavity away from the dust removal cover has a perforated hole, the mounting shaft extends into the dust removal cover through the perforated hole, and the perforated hole extends along the first direction.

14. The dust removal device according to claim 13, wherein the mounting cavity has an exhaust port communicating with the extraction assembly, and along the first direction, the exhaust port and the intake port of the dust removal cover are located on opposite sides of the dust removal cover and the mounting cavity.

15. The dust removal device according to claim 13, wherein the mounting cavity has two flexible shielding members on the side wall away from the dust removal cover, and the two flexible shielding members are installed on opposite sides of the drilled hole along a third direction perpendicular to the first direction, and are stitched together to shield the drilled hole.

16. The dust removal device according to claim 15, wherein the flexible shielding member is a brush.

17. The dust removal device according to claim 16, wherein the ends of the brushes have magnetic members, the magnetic members at the ends of the two brushes are attracted to each other, and the mounting shaft contains a ferromagnetic material.

18. The dust removal device according to claim 13, wherein a cover plate is fitted onto the mounting shaft, and the cover plate is movable along the first direction together with the mounting shaft, and is configured to cover the drilled hole as it moves.

19. The dust removal device according to claim 13, further comprising an axial drive assembly, the axial drive assembly being connected to the mounting shaft, and the axial drive assembly being configured to drive the dust removal brush so as to extend and retract along the axial direction of the mounting shaft.

20. The dust removal device according to claim 19, further comprising a second drive assembly, the second drive assembly being connected to the dust removal assembly and the vibration assembly, and the second drive assembly being configured to drive the dust removal assembly and the vibration assembly to move along a second direction, the second direction intersecting the first direction.

21. The dust removal device according to claim 20, wherein the first direction and the second direction are perpendicular to each other and both are parallel to the horizontal direction.

22. The dust removal device further includes a control circuit, the control circuit being electrically connected to the vibration assembly, the first drive assembly, the second drive assembly, the extraction assembly, and the axial drive assembly, respectively, the control circuit is In response to receiving a cleaning command, the extraction assembly extracts air from the dust removal cover to create a negative pressure, and the second drive assembly drives the dust removal 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 vibrating assembly vibrates the dust removal brush, and the first drive assembly drives the dust removal assembly to reciprocate along the first direction to clean the battery cell preform. The dust removal device according to claim 20, configured such that, in response to the completion of cleaning, the second drive assembly drives the dust removal assembly to return from the preset position to the initial position along the second direction, and the axial drive assembly controls the dust removal brush to retract from its original position into the dust removal cover along the axial direction of the mounting shaft, hold for a preset time, and then protrude back to its original position.

23. The dust removal device according to claim 20, comprising two dust removal assemblies installed symmetrically and spaced apart, and a first drive assembly, a vibration assembly, a second drive assembly, an air extraction assembly, and / or a mounting cavity that drive the movement of the two dust removal assemblies and / or the dust removal brushes, respectively.

24. A battery production system comprising a welding device and a dust removal device, wherein the dust removal device is the dust removal device described in any one of claims 1 to 23.

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