Dust removal devices, battery manufacturing equipment and dust removal methods

Abstract

A dust removal device (300), a battery manufacturing equipment (100), and a dust removal method are disclosed. The dust removal device (300) is used to remove dust from the surface of a feed belt (3), and includes a dust suction mechanism (1) and a magnetic mechanism (2). The magnetic mechanism (2) is opposite to the dust suction mechanism (1) and spaced apart to form a gap through which the feed belt (3) passes. The magnetic mechanism (2) is used to generate an alternating magnetic field. By setting opposing magnetic mechanisms (2) and dust collection mechanisms (1) on both sides of the thickness direction of the material belt (3), when the material belt (3) passes through the gap between the magnetic mechanism (2) and the dust collection mechanism (1), the metal dust passing through the gap with the material belt (3) will be subjected to the alternating magnetic field and induced to form eddy currents. As a result, the metal dust generates an induced magnetic field opposite to the original alternating magnetic field, causing the metal dust to be repelled and bounced away from the material belt (3). The dust collection mechanism (1) sucks away the bounced metal dust, effectively reducing the metal dust residue. At the same time, the dust collection mechanism (1) can also suck away other dust with smaller weight, effectively improving the dust removal effect.

Description

Technical Field

[0001] This application relates to the field of dust removal technology, and more specifically, to a dust removal device, battery manufacturing equipment, and dust removal method. Background Technology

[0002] During the processing of conveyor belts, dust removal and cleaning of the belt surface are necessary. Common dust removal methods include air blowing, negative pressure dust removal, and adhesive dust removal. Dust easily adheres to the surface of the conveyor belt, and when the surface has a coating, dust can easily become embedded in the coating, making it difficult to remove. Metal dust, in particular, is difficult to remove effectively using conventional dust removal methods. Summary of the Invention

[0003] This application aims to provide a dust removal device, battery manufacturing equipment, and dust removal method to improve the dust removal effect of conveyor belts.

[0004] The embodiments of this application are implemented as follows:

[0005] In a first aspect, embodiments of this application provide a dust removal device for removing dust from the surface of a conveyor belt, comprising a dust collection mechanism and a magnetic mechanism, wherein the magnetic mechanism is opposite to and spaced apart from the dust collection mechanism to form a gap for the conveyor belt to pass through, and the magnetic mechanism is used to generate an alternating magnetic field.

[0006] In the technical solution of this application, by setting opposing magnetic mechanisms and dust collection mechanisms on both sides of the thickness direction of the material strip, when the material strip passes through the gap between the magnetic mechanism and the dust collection mechanism, the metal dust passing through the gap with the material strip will be subjected to the alternating magnetic field and induce eddy currents. As a result, the metal dust generates an induced magnetic field opposite to the original alternating magnetic field, causing the metal dust to be repelled and bounced off the material strip. At the same time, the dust collection mechanism sucks away the bounced metal dust, effectively reducing the metal dust residue. In addition, the dust collection mechanism can also suck away other dust with smaller weight, effectively improving the dust removal effect.

[0007] In one embodiment of this application, the magnetic mechanism includes a magnetic roller that generates the alternating magnetic field when it rotates.

[0008] In the above technical solution, the rotation of the magnetic roller generates an alternating magnetic field, and the overall structure is simple and has high reliability.

[0009] In one embodiment of this application, the magnetic mechanism further includes a drive assembly for driving the magnetic roller to rotate.

[0010] In the above technical solution, by setting a driving component to drive the magnetic roller to rotate actively relative to the material belt, the magnetic roller can generate an alternating magnetic field, which has high reliability.

[0011] In one embodiment of this application, the magnetic mechanism further includes a guide roller for guiding the material belt to move. The guide roller has a hollow structure and is rotatably sleeved on the magnetic roller. The gap is formed between the outer peripheral surface of the guide roller and the dust collection mechanism.

[0012] In the above technical solution, on the one hand, the guide roller rotates with the conveyor belt, achieving a better conveying effect. Furthermore, the guide roller separates the magnetic roller from the conveyor belt, ensuring that the rotation of the magnetic roller does not affect the conveying of the conveyor belt, thus guaranteeing stable conveying and effective dust removal. On the other hand, the width of the conveyor belt on the guide roller will not exceed the axial length of the guide roller, meaning the axial length of the magnetic roller will not be less than the conveyor belt. This ensures that the entire conveyor belt in the width direction is within the alternating magnetic field range of the magnetic roller, guaranteeing the dust removal effect.

[0013] In one embodiment of this application, the magnetic mechanism further includes a first bearing, and the magnetic roller is connected to the through roller via the first bearing.

[0014] In the above technical solution, the magnetic roller and the guide roller are connected as one unit by setting a first bearing. The overall structure of the magnetic mechanism is compact, easy to install, and the friction between the magnetic roller and the guide roller is small, making it flexible to rotate and highly reliable.

[0015] In one embodiment of this application, the magnetic mechanism further includes a mounting base, the two ends of the magnetic roller are rotatably connected to the mounting base, and the drive assembly is fixedly connected to the mounting base.

[0016] In the above technical solution, by setting up a mounting base, the rotation of the magnetic roller is made more stable. The mounting base can also play a shielding role to alleviate the problem of metal dust being ejected into the external space and causing environmental pollution, and to ensure the dust collection effect of the dust collection mechanism.

[0017] In one embodiment of this application, the vacuuming mechanism includes a vacuum hood and a negative pressure device. The vacuum hood has a vacuum port facing the magnetic mechanism, and the negative pressure device is connected to the vacuum hood and is used to create a negative pressure inside the vacuum hood.

[0018] In the above technical solution, by setting up a dust collection hood, the metal dust that bounces off the conveyor belt will enter the space enclosed by the dust collection hood, preventing the metal dust from bouncing off the dust collection hood and thus avoiding environmental pollution. In addition, the metal dust is closer to the dust collection port, making it easier to be sucked away and improving the dust collection effect.

[0019] In one embodiment of this application, the dust hood includes a side wall, a top wall, and a connecting portion. The side wall surrounds the top wall, one end of the side wall is connected to the top wall, and the other end of the side wall forms the dust suction port. The connecting portion is disposed on the top wall and is used to connect the negative pressure device.

[0020] In the above technical solution, by arranging the suction port and the connecting part opposite to each other, the suction path is shortened and the suction effect is improved.

[0021] Secondly, embodiments of this application provide a battery manufacturing apparatus, which includes a conveying device, a cutting device, and the aforementioned dust removal device. The conveying device is used to convey electrode strips, the cutting device is used to cut the electrode strips, and the dust removal device is located downstream of the cutting device and is used to remove dust from the surface of the electrode strips.

[0022] In the above technical solution, by setting the aforementioned dust removal device in the battery manufacturing equipment, when the electrode strip passes through the dust removal device, the electrode and the metal dust adhering to the electrode are subjected to an alternating magnetic field to generate eddy currents and form an induced magnetic field. Since the induced magnetic field is opposite to the magnetic field of the original magnetic mechanism, the electrode and the metal dust are subjected to a repulsive force away from the magnetic mechanism. The electrode itself has a large weight and is also constrained by the dust removal mechanism, conveying device and other equipment to remain in its original position. The metal dust will be bounced off the electrode under the action of the repulsive force, so that the metal dust can be sucked away by the dust collection mechanism. At the same time, the dust collection mechanism can also suck away other dust with smaller weight, effectively improving the dust removal effect and improving the finished quality of the battery cell.

[0023] Thirdly, embodiments of this application provide a dust removal method for removing dust from the surface of a conveyor belt, comprising: setting a dust collection mechanism on one side of the conveyor belt and setting a magnetic mechanism on the other side of the conveyor belt; generating an alternating magnetic field through the magnetic mechanism; and sucking away the dust from the surface of the conveyor belt through the dust collection mechanism.

[0024] The dust removal method provided in this application sets up opposing magnetic mechanisms and dust collection mechanisms on both sides of the material belt in the thickness direction. The dust is simultaneously subjected to the alternating magnetic field and the attraction force, causing the dust to bounce off the surface of the material belt towards the dust collection mechanism. At the same time, the dust collection mechanism sucks away the bounced dust, effectively reducing dust residue and improving the dust removal effect. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A perspective view of a dust removal device provided in an embodiment of this application;

[0027] Figure 2 A cross-sectional view of a dust removal device provided in an embodiment of this application;

[0028] Figure 3 A schematic diagram illustrating the working principle of a dust removal device provided in an embodiment of this application;

[0029] Figure 4 This is a schematic diagram of a battery manufacturing apparatus provided in one embodiment of this application;

[0030] Figure 5 This is a flowchart of a dust removal method provided in an embodiment of this application.

[0031] Icons: 1000-Battery manufacturing equipment; 100-Conveying device; 200-Cutting device; 300-Dust removal device; 1-Dust suction mechanism; 11-Dust suction hood; 111-Dust suction port; 112-Side wall; 113-Top wall; 114-Connecting part; 2-Magnetic mechanism; 21-Magnetic roller; 211-Roller body; 212-Permanent magnet; 22-Drive assembly; 23-Passing roller; 24-First bearing; 25-Mounting base; 251-First end wall; 252-Second end wall; 253-Bottom wall; 26-Second bearing; 3-Material strip; G-Gap. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0034] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three possibilities: A exists, A and B exist simultaneously, and B exists. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0037] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0038] In related technologies, dust easily adheres to the surface of conveyor belts. When the surface of the conveyor belt has a coating layer, dust is also easily embedded in the coating layer and difficult to remove. To facilitate dust removal, current methods include air blowing, negative pressure dust removal, and adhesive dust removal, or a combination of air blowing and negative pressure dust removal, i.e., first blowing air onto the surface of the conveyor belt, and then using a dust suction mechanism to remove the dust. Existing dust removal methods may have blind spots that are difficult to blow, such as the sides of the conveyor belt. Moreover, unsuitable air force strength and angle may also cause some dust to not be blown away, such as metal dust with relatively high density and mass, which may still remain on the surface of the conveyor belt, thus causing quality problems in products containing that conveyor belt.

[0039] In view of this, to improve the dust removal effect, this application provides a dust removal device, which includes a dust collection mechanism and a magnetic mechanism. The magnetic mechanism is configured to be opposite to the dust collection mechanism and spaced apart to form a gap. The magnetic mechanism is used to generate an alternating magnetic field. When the conveyor belt passes through the gap, the metal dust is subjected to the alternating magnetic field, generating eddy currents and forming an induced magnetic field. Since the induced magnetic field is opposite to the magnetic field of the original magnetic mechanism, a repulsive force occurs between the magnetic mechanism and the metal dust. This repulsive force causes the metal dust to detach from the conveyor belt or has a tendency to detach from the conveyor belt, thereby reducing the adhesion force between the metal dust and the conveyor belt, and making it easier for the metal dust to be sucked away by the dust collection mechanism. The dust removal device provided by this application can generate an induced magnetic field as long as the metal dust is within the alternating magnetic field range of the magnetic mechanism, thereby reducing the adhesion force on the metal dust and even causing the metal dust to bounce off the conveyor belt, effectively reducing metal dust residue and improving the dust removal effect.

[0040] The dust removal device disclosed in this application can be used for dust removal of various types of conveyor belts, and can be used for dust removal during conveying, winding, cutting, and other processes of the conveyor belt. The following description takes the conveyor belt as an example of an electrode sheet.

[0041] Figure 1 A perspective view of a dust removal device 300 provided in some embodiments of this application is shown. Figure 2 Cross-sectional views of a dust removal device 300 provided in some embodiments of this application are shown, such as... Figure 1 and Figure 2 As shown, the dust removal device 300 includes a dust collection mechanism 1 and a magnetic mechanism 2. The magnetic mechanism 2 is opposite to the dust collection mechanism 1 and is spaced apart to form a gap G through which the feed belt 3 passes. The magnetic mechanism 2 is used to generate an alternating magnetic field.

[0042] The dust extraction mechanism 1 refers to the mechanism used to provide negative pressure suction to remove metal dust.

[0043] Magnetic mechanism 2 refers to a mechanism capable of generating an alternating magnetic field. Magnetic mechanism 2 can generate an alternating magnetic field through a moving permanent magnet or through a movable electromagnetic coil.

[0044] When the material strip 3 is an electrode sheet, it generally contains materials such as copper foil and aluminum foil, and the metal dust is generally non-magnetic metal dust such as copper powder and aluminum powder. Figure 3 A schematic diagram of the working principle of the dust removal device 300 is shown, such as... Figure 3 As shown, when an alternating magnetic field acts on this type of metal dust, eddy currents are induced in the metal dust. The eddy currents generate an induced magnetic field in the opposite direction to the original alternating magnetic field, which causes a repulsive force between the magnetic mechanism 2 and the metal dust. This repulsive force causes the metal dust to be bounced away from the material belt 3 or has a tendency to be bounced away from the material belt 3, thereby reducing the adhesion between the metal dust and the material belt 3, and making it easier for the metal dust to be sucked away by the dust collection mechanism 1.

[0045] The magnetic mechanism 2 and the dust collection mechanism 1 are respectively arranged on both sides of the thickness direction of the material belt 3. The magnetic mechanism 2 and the dust collection mechanism 1 are opposite to each other so that the metal dust under the action of the alternating magnetic field is simultaneously attracted. With the cooperation of the magnetic mechanism 2 and the dust collection mechanism 1 arranged opposite to each other, the metal dust is bounced away from the surface of the material belt 3 towards the dust collection mechanism 1. At the same time, the dust collection mechanism 1 sucks away the bounced metal dust, effectively reducing the metal dust residue and improving the dust removal effect.

[0046] On the other hand, in addition to metal dust, the dust collection mechanism 1 can also remove non-metal dust, thus achieving a better dust removal effect and ensuring the cleanliness of the material belt 3.

[0047] It should be noted that the embodiments of this application take the electrode strip 3 as an example for illustration. For other types of strips containing other types of metal dust, the dust removal device 300 provided in the embodiments of this application can also make the metal dust bounce off the strip 3 and be sucked away, while simultaneously sucking away non-metallic dust, thus having a good dust removal effect.

[0048] According to some embodiments of this application, the magnetic mechanism 2 includes a magnetic roller 21, which generates an alternating magnetic field when it rotates.

[0049] like Figure 2 As shown, the magnetic roller 21 includes a cylindrical roller body 211 and a plurality of permanent magnets 212. The plurality of permanent magnets 212 are arranged sequentially along the circumference of the roller body 211 and fixed to the roller body 211. When the roller body 211 rotates, the plurality of permanent magnets 212 rotate with the roller body 211, and the change of the magnetic poles of the permanent magnets 212 generates an alternating magnetic field.

[0050] By setting up a magnetic roller 21, the rotation of the magnetic roller 21 can generate an alternating magnetic field. The overall structure is simple and has high reliability.

[0051] According to some embodiments of this application, the magnetic mechanism 2 further includes a drive component 22 for driving the magnetic roller 21 to rotate.

[0052] like Figure 2 As shown, the drive assembly 22 includes a motor, the output shaft of which is connected to one end of the magnetic roller 21 to drive the magnetic roller 21 to rotate around its own axis.

[0053] By setting the drive component 22 to drive the magnetic roller 21 to rotate actively relative to the material belt 3, the magnetic roller 21 can rotate to generate an alternating magnetic field, which has high reliability.

[0054] According to some embodiments of this application, the magnetic mechanism 2 further includes a guide roller 23, which is used to guide the movement of the material belt 3. The guide roller 23 has a hollow structure and is rotatably sleeved on the magnetic roller 21. A gap G is formed between the outer peripheral surface of the guide roller 23 and the dust collection mechanism 1.

[0055] like Figure 2 As shown, the hollow structure refers to the tubular structure of the roller 23. The roller 23 is rotatably mounted on the magnetic roller 21, meaning that the roller 23 and the magnetic roller 21 can rotate relatively independently.

[0056] The guide roller 23 rotates with the material belt 3, achieving a better conveying effect. The guide roller 23 separates the magnetic roller 21 from the material belt 3, so the rotation of the magnetic roller 21 does not affect the conveying of the material belt 3, ensuring stable conveying and effective dust removal of the material belt 3.

[0057] On the other hand, the width of the material belt 3 on the roller 23 will not be greater than the axial length of the roller 23, that is, the axial length of the magnetic roller 21 will not be less than the material belt 3, so that the material belt 3 is entirely within the alternating magnetic field range of the magnetic roller 21 in the width direction, thus ensuring the dust removal effect.

[0058] According to some embodiments of this application, the magnetic mechanism 2 further includes a first bearing 24, through which the magnetic roller 21 and the guide roller 23 are connected.

[0059] like Figure 2 As shown, the two ends of the roller 23 are respectively provided with a first bearing 24, which is connected between the inner circumferential surface of the roller 23 and the outer circumferential surface of the magnetic roller 21.

[0060] The magnetic roller 21 and the guide roller 23 are connected as one unit by the first bearing 24. The overall structure of the magnetic mechanism 2 is compact and easy to install. The friction between the magnetic roller 21 and the guide roller 23 is small, the rotation is flexible, and the reliability is high.

[0061] According to some embodiments of this application, the magnetic mechanism 2 further includes a mounting base 25, the two ends of the magnetic roller 21 are rotatably connected to the mounting base 25, and the drive assembly 22 is fixedly connected to the mounting base 25.

[0062] like Figure 2 As shown, the mounting base 25 includes a first end wall 251, a second end wall 252 and a bottom wall 253. The first end wall 251 and the second end wall 252 are disposed opposite each other on both sides of the width direction of the material belt 3. The bottom wall 253 is connected to the end of the first end wall 251 and the second end wall 252 away from the dust collection mechanism 1.

[0063] By setting the mounting base 25, the magnetic roller 21 rotates more stably. The mounting base 25 can also act as a shield to alleviate the problem of metal dust being ejected into the external space and causing environmental pollution, thus ensuring the dust collection effect of the dust collection mechanism 1.

[0064] According to some embodiments of this application, the vacuuming mechanism 1 includes a vacuum hood 11 and a negative pressure device (not shown in the figure). The vacuum hood 11 has a vacuum port 111 facing the magnetic mechanism 2. The negative pressure device is connected to the vacuum hood 11 and is used to create a negative pressure inside the vacuum hood 11.

[0065] like Figure 2 As shown, the suction port 111 of the dust hood 11 faces the magnetic mechanism 2 and is positioned above the material belt 3.

[0066] By setting up the dust collection hood 11, the metal dust ejected from the conveyor belt 3 will enter the space enclosed by the dust collection hood 11, preventing the metal dust from being ejected outside the dust collection hood 11 to avoid polluting the environment. It also makes the metal dust closer to the dust collection port 111, making it easier to be sucked away and improving the dust collection effect.

[0067] According to some embodiments of this application, such as Figure 2 As shown, the dust hood 11 includes a side wall 112, a top wall 113 and a connecting part 114. The side wall 112 surrounds the top wall 113, one end of the side wall 112 is connected to the top wall 113, and the other end of the side wall 112 forms a dust suction port 111. The connecting part 114 is disposed on the top wall 113 and is used to connect a negative pressure device.

[0068] One end of the side wall 112 forms a suction port 111, and the other end of the side wall 112 connects to the top wall 113 to form a cover structure. An opening is formed on the top wall 113, and a connecting part 114 is disposed in the opening. The connecting part 114 is a tubular structure for connecting the negative pressure device and the inside of the suction cover 11, so that a negative pressure environment can be formed inside the suction cover 11 through the negative pressure device.

[0069] By aligning the suction port 111 and the connecting part 114, the suction path is shortened and the suction effect is improved.

[0070] Secondly, embodiments of this application also provide a battery manufacturing apparatus 1000, such as... Figure 4 As shown, the battery manufacturing equipment 1000 includes a conveying device 100, a cutting device 200, and a dust removal device 300. The conveying device 100 is used to convey the electrode strip 3, the cutting device 200 is used to cut the electrode strip 3, and the dust removal device 300 is located downstream of the cutting device 200 and is used to remove metal dust from the surface of the electrode strip 3.

[0071] Electrodes are one of the main components of the electrode assembly in a battery cell, and are divided into positive and negative electrodes. A battery cell includes electrode assemblies and an electrolyte. The electrode assemblies include positive and negative electrodes and separators. A battery cell primarily functions by the movement of metal ions between the positive and negative electrodes. The positive electrode includes a positive current collector and a positive active material layer, with the active material layer coated on the surface of the current collector. The current collector includes a positive current-collecting portion and a positive electrode tab protruding from it. The current-collecting portion is coated with the positive active material layer, while at least a portion of the positive electrode tab is not coated with the active material layer. Taking a lithium-ion battery as an example, the material of the positive current collector can be aluminum foil, and the positive active material layer includes the positive active material, which can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode includes a negative current collector and a negative active material layer, the negative active material layer being coated on the surface of the negative current collector. The negative current collector includes a negative current collection portion and a negative electrode tab protruding from the negative current collection portion. The negative current collection portion is coated with the negative active material layer, while at least a portion of the negative electrode tab is not coated with the negative active material layer. The material of the negative current collector can be copper foil, and the negative active material layer includes a negative active material, which can be carbon or silicon, etc. A separator is used to insulate and isolate the positive and negative electrode sheets to prevent them from bridging and causing a short circuit. The separator can be made of a film such as PP (polypropylene) or PE (polyethylene). Before the electrode assembly is formed, electrode sheets of a predetermined length need to be cut from the electrode strip 3. During the cutting process, metal dust inevitably appears (e.g., copper powder from cutting copper foil, aluminum powder from cutting aluminum foil). This metal dust has a certain adsorption force with the electrode sheet, and it easily embeds into the active material layer coated on the electrode surface. Simply blowing with compressed air or using negative pressure suction is insufficient to remove the dust. Furthermore, this metal dust is non-magnetic and cannot be removed by magnets. Metal dust adhering to the positive and negative electrode sheets can easily puncture the separator, causing short circuits between the positive and negative electrode sheets, resulting in poor performance of the finished battery cell.

[0072] The battery manufacturing equipment 1000 provided in this application embodiment, by setting the dust removal device 300 provided in the aforementioned embodiment, causes the electrode sheet material belt 3 to be subjected to an alternating magnetic field when passing through the dust removal device 300. This causes the electrode sheet and the metal dust adhering to the electrode sheet to generate eddy currents and form an induced magnetic field. Since the induced magnetic field is opposite to the magnetic field of the original magnetic mechanism 2, the electrode sheet and the metal dust are subjected to a repulsive force away from the magnetic mechanism 2. The electrode sheet itself has a large weight and is also constrained by the conveying device 100 and other devices to remain in its original position. The metal dust will be ejected from the electrode sheet under the action of the repulsive force, so that the metal dust can be sucked away by the dust collection mechanism 1, effectively improving the dust removal effect and improving the finished quality of the battery cell.

[0073] In some embodiments, the magnetic mechanism 2 can be positioned below the gravity direction of the material belt 3. The electrode will not move upward due to gravity, making it easy for small metal dust particles to break free from their own gravity and adhesion and bounce upward, thus ensuring a better dust removal effect.

[0074] On the other hand, in the embodiments of this application, only a gap G is provided between the magnetic mechanism 2 and the dust collection mechanism 1 for the electrode material belt 3 to pass through, which can also play a role in restricting the electrode and preventing the electrode from moving upward under the repulsive force, so that the metal dust can easily detach from the electrode and ensure the stability of the electrode and easy transportation.

[0075] The structure of the dust removal device 300 in the battery manufacturing equipment 1000 provided in this application embodiment can be found in the detailed description of the foregoing embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0076] Thirdly, embodiments of this application also provide a dust removal method, such as... Figure 5 As shown, the dust removal method for removing dust from the surface of conveyor belt 3 includes:

[0077] S100. A dust collection mechanism 1 is provided on one side of the material belt 3, and a magnetic mechanism 2 is provided on the other side of the material belt 3.

[0078] S200, an alternating magnetic field is generated through magnetic mechanism 2;

[0079] S300: The dust on the surface of the conveyor belt 3 is sucked away by the dust suction mechanism 1.

[0080] The structure of the dust removal device 300 used in the dust removal method provided in this application can be found in the detailed description of the foregoing embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0081] Based on some embodiments of this application, please refer to... Figure 1 , Figure 2 and Figure 3 As shown, this application embodiment provides a dust removal device 300, which includes a dust collection mechanism 1 and a magnetic mechanism 2. The magnetic mechanism 2 is opposite to the dust collection mechanism 1 and spaced apart to form a gap G through which the feed belt 3 passes. The magnetic mechanism 2 is used to generate an alternating magnetic field. The magnetic mechanism 2 includes a mounting base 25, a drive assembly 22, a magnetic roller 21, and a guide roller 23. The mounting base 25 includes a first end wall 251, a second end wall 252, and a bottom wall 253. The first end wall 251 and the second end wall 252 are disposed opposite to each other on both sides of the feed belt 3 in the width direction. The bottom wall 253 is connected to the end of the first end wall 251 and the second end wall 252 away from the dust collection mechanism 1. The two ends of the magnetic roller 21 are respectively connected by a second bearing 26 (see reference). Figure 2The magnetic roller 21 (shown) is rotatably connected to the first end wall 251 and the second end wall 252. The drive assembly 22 includes a motor and is mounted on the first end wall 251. One end of the magnetic roller 21 connected to the first end wall 251 passes through the first end wall 251 and connects to the output shaft of the motor. The magnetic roller 21 includes a cylindrical roller body 211 and multiple permanent magnets 212. The multiple permanent magnets 212 are arranged sequentially along the circumference of the roller body 211 and fixed to it. When the roller body 211 rotates, the multiple permanent magnets 212 rotate with the roller body 211, and the change in the magnetic poles of the permanent magnets 212 generates an alternating magnetic field acting on the metal dust. A guide roller 23 is rotatably fitted onto the magnetic roller 21 and can rotate independently relative to the magnetic roller 21. The dust collection mechanism 1 includes a dust collection hood 11 and a negative pressure device. The dust collection hood 11 includes a side wall 112, a top wall 113, and a connecting part 114. The side wall 112 surrounds the top wall 113, with one end of the side wall 112 connected to the top wall 113 and the other end forming a dust collection port 111. The connecting part 114 is disposed on the top wall 113 and is used to connect the negative pressure device. A gap G is formed between the outer circumferential surface of the roller 23 and the dust collection hood 11, through which the feed belt 3 passes. When the feed belt 3 passes through the gap G, the metal dust on the feed belt 3 is bounced off the feed belt 3 under the action of the magnetic mechanism 2 and is sucked away and removed under the action of the dust collection mechanism 1. In addition to metal dust, the dust collection mechanism 1 can also suck away other non-metallic dust, thereby achieving a better dust removal effect and ensuring the cleanliness of the feed belt 3.

[0082] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A dust removing apparatus for removing metal dust on a surface of a tape, characterized by, The dust collection mechanism comprises: a dust collection mechanism; a magnetic mechanism opposite to the dust collection mechanism and spaced apart to form a gap for the material belt to pass through, the magnetic mechanism being used to generate an alternating magnetic field; the magnetic mechanism comprises a magnetic roller, a driving assembly and a passing roller, the magnetic roller generating the alternating magnetic field when rotating, the driving assembly being used to drive the magnetic roller to rotate, and the passing roller being used to guide the material belt to move, the passing roller being a hollow structure, the passing roller being rotatably sleeved on the magnetic roller, and the gap being formed between the outer circumferential surface of the passing roller and the dust collection mechanism.

2. The dust extraction device of claim 1, wherein The magnetic mechanism further comprises a first bearing, and the magnetic roller and the passing roller are connected through the first bearing.

3. The dust extraction device of claim 1, wherein The magnetic mechanism further comprises a mounting seat, and two ends of the magnetic roller are rotatably connected to the mounting seat, and the driving assembly is fixedly connected to the mounting seat.

4. The dust extraction device of any one of claims 1-3, wherein, The dust collection mechanism comprises a dust collection cover and a negative pressure device, the dust collection cover having a dust collection port arranged towards the magnetic mechanism, and the negative pressure device being connected to the dust collection cover, and the negative pressure device being used to form a negative pressure in the dust collection cover.

5. The dust extraction device of claim 4, wherein, The dust collection cover comprises a side wall, a top wall and a connecting portion, the side wall being surrounded by the top wall, one end of the side wall being connected to the top wall, the other end of the side wall forming the dust collection port, and the connecting portion being arranged on the top wall and being used to connect the negative pressure device.

6. A battery manufacturing apparatus characterized by comprising: The dust collection mechanism comprises: a conveying device for conveying a material belt; a cutting device for cutting the material belt; a dust removal device according to any one of claims 1-5, the dust removal device being arranged downstream of the cutting device and being used to remove dust on the surface of the material belt.

7. A dust removing method for removing dust on a surface of a material tape, characterized by, The dust collection mechanism comprises: a dust collection mechanism arranged on one side of the material belt, and a magnetic mechanism arranged on the other side of the material belt, the magnetic mechanism comprising a magnetic roller, a driving assembly and a passing roller, the magnetic roller generating an alternating magnetic field when rotating, the driving assembly being used to drive the magnetic roller to rotate, and the passing roller being used to guide the material belt to move, the passing roller being a hollow structure, the passing roller being rotatably sleeved on the magnetic roller, and the gap being formed between the outer circumferential surface of the passing roller and the dust collection mechanism; the magnetic mechanism generates an alternating magnetic field; when the material belt passes through the gap, the dust on the surface of the material belt is sucked away by the dust collection mechanism.

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