Dust removal device and battery manufacturing equipment

Abstract

The utility model provides a dust removal device and battery manufacturing equipment, the dust removal device comprises a driving mechanism, a negative pressure generator, a dust removal structure and a diversion structure, the driving mechanism is in driving connection with the dust removal structure, the driving mechanism provides driving force for the dust removal structure to move towards or away from a tab, and the dust removal structure is provided with a dust removal channel; the negative pressure generator is communicated with the dust removal channel and used for providing negative pressure, the dust removal structure is provided with a dust collection end with a bottom opening, the dust collection end faces the tab, and the flow guide structure is arranged at the dust collection end and provided with a flow guide channel communicated with the dust removal channel. The arrangement of the driving mechanism, the dust collection structure and the flow guide structure facilitates adsorption and collection of metal particles and dust formed after tab welding, so that the cleanliness in the battery cell production process is improved, the performance and reliability of the battery cell are improved, and the problem of poor dust removal efficiency of a dust removal device in the prior art can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the battery manufacturing related technical field, specifically, relate to a dust collector and battery manufacturing equipment. BACKGROUND

[0002] In recent years, with the rapid development of new energy technology, as the core power source, the performance and safety of secondary batteries are increasingly improved. Batteries are composed of battery cells, and battery cells are made by overlapping and winding or laminating separators, negative electrodes, separators and positive electrodes. The basic function of the separator is to separate the positive electrode sheet and the negative electrode sheet to prevent the positive and negative electrodes from contacting and short-circuiting. In the battery manufacturing process, tab welding is one of the key processes, which directly affects the electrical performance and safety of the battery. The tab is the lead-out part of the electrode inside the battery, which is connected to the external circuit through welding to realize the charging and discharging function of the battery. However, during the welding process, due to high temperature and metal material splashing, metal particles (particles) are inevitably produced. If these tiny particles are not effectively removed, they may penetrate the separator during the battery assembly stage, causing positive and negative short circuits, and thus causing internal thermal runaway of the battery, resulting in performance degradation and even safety hazards.

[0003] Currently, the dust removal method after battery tab welding mainly uses a fan fixed on one side of the welding area to adsorb or blow to remove dust. Such devices have the problem of poor dust removal effect.

[0004] As can be seen from the above, the dust removal device in the prior art has the problem of poor dust removal efficiency. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide a dust removal device and battery manufacturing equipment to solve the problem of poor dust removal efficiency of the dust removal device in the prior art.

[0006] In order to achieve the above purpose, according to one aspect of the utility model, a dust removal device is provided, which comprises a driving mechanism, a negative pressure generator, a dust removal structure and a flow guide structure. The driving mechanism is drivingly connected with the dust removal structure, and provides driving force for the movement of the dust removal structure towards or away from the tab. The dust removal structure has a dust removal channel, and the negative pressure generator is in communication with the dust removal channel for providing negative pressure. The dust removal structure has a dust suction end with an open bottom, and the dust suction end is arranged towards the tab. The flow guide structure is arranged at the dust suction end, and the flow guide structure has a flow guide channel arranged in communication with the dust removal channel.

[0007] Further, the dust removal structure comprises a dust removal cover and a dust removal pipeline. The dust removal cover has a dust suction end and a dust outlet end. The dust removal pipeline is connected with the dust outlet end. The dust removal pipeline and the dust removal cover cooperate to form a dust removal channel, and the negative pressure generator is in communication with the dust removal pipeline.

[0008] Further, the dust outlet is arranged at the top of the dust cover, and the dust pipe is arranged at one side of the top of the dust cover and extends along the height direction of the dust cover.

[0009] Further, the dust cover comprises a first pipe section and a second pipe section, the first pipe section has a rectangular cross section, the bottom of the first pipe section forms the dust suction end, and one end of the second pipe section is connected to the top of the first pipe section, and the other end of the second pipe section forms the dust outlet with a circular opening.

[0010] Further, the flow guide structure comprises a frame, a first flow guide plate group and a second flow guide plate group, the frame is connected to the inner wall surface of the dust suction end, the frame has a first plate body and a second plate body arranged at intervals along the length direction, the first flow guide plate group comprises a plurality of first flow guide plates arranged at intervals and parallel to each other along the length direction of the frame, the distance between the top end of the first flow guide plate and the first plate body is less than the distance between the bottom end of the first flow guide plate and the first plate body along the length direction of the frame, and the second flow guide plate group is arranged between the first flow guide plate group and the second plate body, and the second flow guide plate group comprises a plurality of second flow guide plates arranged at intervals and parallel to each other along the length direction of the frame, and the distance between the top end of the second flow guide plate and the second plate body is less than the distance between the bottom end of the second flow guide plate and the second plate body along the length direction of the frame.

[0011] Further, the flow guide structure further comprises a third flow guide plate arranged on the frame, the third flow guide plate is arranged along the height direction of the frame, and the first flow guide plate group and the second flow guide plate group are arranged on both sides of the third flow guide plate along the length direction of the frame and are symmetrically arranged about the third flow guide plate.

[0012] Further, the driving mechanism comprises a mounting frame, a driving member, a mounting plate and a limiting mechanism, the driving member is arranged on the mounting frame, the dust removal structure is arranged on the mounting plate, the driving end of the driving member is connected to the mounting plate, the limiting mechanism comprises a first limiting member arranged on the mounting frame and a second limiting member arranged on the mounting plate, and the first limiting member and the second limiting member are abutted or arranged at intervals along the height direction of the mounting frame.

[0013] Further, the first limiting member is adjustably arranged on the mounting frame along the height direction of the mounting frame; and / or the second limiting member is adjustably arranged on the mounting plate along the height direction of the mounting frame.

[0014] Further, the dust removal device further comprises a sensor arranged on the dust removal structure, and the sensor is used for detecting the wind speed inside the dust removal channel.

[0015] According to another aspect of the present application, a battery manufacturing equipment is provided, which comprises a base, a camera and a plurality of dust removal devices as described above, the plurality of dust removal devices are arranged on the base, and the camera is arranged on the base and / or the dust removal structure, and the camera is used for cooperating with at least one of the dust removal devices to detect dust removal.

[0016] The utility model discloses a technical scheme, dust collector includes drive mechanism, negative pressure generator, dust removal structure and flow guide structure, drive mechanism is connected with dust removal structure drive, and drive mechanism is the driving force that provides for the dust removal structure towards or far from the ear mobile, and the dust removal structure has the dust removal channel, and negative pressure generator is connected with dust removal channel and is used for providing negative pressure, and the dust removal structure has the dust absorption end of bottom opening, and the dust absorption end sets up towards the ear, and the flow guide structure sets up at the dust absorption end, and the flow guide structure has the flow guide channel that sets up with dust removal channel intercommunication.

[0017] From the above, the dust collector of the application adopts the drive mechanism to realize the control of the distance between the dust removal structure and the lug, and is suitable for lugs of different thicknesses and sizes to improve the applicability, and the distance between the dust removal structure and the lug is controllable through the setting of the drive mechanism, and the size of the suction force is adjusted, which is beneficial to improve the dust collection efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings accompanying the specification provide further understanding of the application, illustrate the exemplary embodiments of the application, and serve as an explanation of the application, and do not constitute an improper limitation of the application. In the drawings:

[0019] Figure 1 A perspective structural schematic view of the dust collector provided by the application is provided;

[0020] Figure 2 Another perspective structural schematic view of the dust collector provided by the application is provided;

[0021] Figure 3 An installation structural schematic view of the dust cover provided by the application is provided;

[0022] Figure 4 A perspective structural schematic view of the flow guide structure provided by the application is provided;

[0023] Figure 5 Another perspective structural schematic view of the flow guide structure provided by the application is provided.

[0024] Among them, the above-mentioned drawings include the following reference signs:

[0025] 10, dust removal structure; 110, dust removal cover; 111, first pipe section; 112, second pipe section; 120, dust removal pipeline; 20, flow guide structure; 210, frame; 211, first plate body; 212, second plate body; 220, first flow guide plate; 230, second flow guide plate; 240, third flow guide plate; 250, flow guide channel; 30, driving mechanism; 310, mounting frame; 320, driving piece; 330, mounting plate; 340, limiting mechanism; 341, second limiting piece; 342, first limiting piece. DETAILED DESCRIPTION

[0026] It should be noted that the embodiments and features in the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0028] In the present application, unless otherwise stated, the orientation words such as "up, down, top, bottom" are generally directed to the direction shown in the drawings, or are directed to the vertical, perpendicular or gravity direction of the components themselves; similarly, for the convenience of understanding and description, "inner, outer" refers to the inner and outer relative to the contour of each component, but the above orientation words are not used to limit the present application.

[0029] Embodiment one

[0030] In order to solve the problem of poor dust removal efficiency of the dust removal device in the prior art, the present application provides a dust removal device, which is used for adsorbing and collecting metal particles formed after lug welding, thereby improving the cleanliness in the production process of the battery cell, and thereby improving the performance and reliability of the battery cell.

[0031] As Figures 1 to 5As shown, the dust removal device includes a driving mechanism 30, a negative pressure generator, a dust removal structure 10, and a flow guide structure 20. The driving mechanism 30 is drivingly connected to the dust removal structure 10, and provides driving force for the dust removal structure 10 to move towards or away from the tab. The dust removal structure 10 has a dust removal passage, and the negative pressure generator is in communication with the dust removal passage for providing negative pressure. The dust removal structure 10 has a dust suction end with an open bottom, which is arranged towards the tab. The flow guide structure 20 is arranged at the dust suction end, and has a flow guide passage 250 arranged in communication with the dust removal passage. The flow guide structure 20 of the present application is arranged in communication with the dust removal passage through the flow guide passage 250, and the flow guide passage 250 has a guiding effect on the airflow, facilitating the absorption of metal particles and dust into the interior of the dust removal passage of the dust removal structure 10, thereby improving the dust suction efficiency. In the process of dust removal by the dust removal structure, the flow guide structure 20 guides the airflow through the flow guide passage 250, so that the metal particles and dust enter the interior of the dust removal passage along with the airflow.

[0032] The negative pressure generator can be a fan, which forms negative pressure in the interior of the dust removal passage.

[0033] Specifically, the dust removal device of the present application uses the driving mechanism 30 to control the distance between the dust removal structure 10 and the tab, thereby being suitable for tabs of different thicknesses and sizes, and improving the applicability of the dust removal device. At the same time, the dust removal device of the present application adjusts the distance between the dust removal structure 10 and the tab, thereby adjusting the suction force, improving the flexibility of application, and improving the dust suction efficiency.

[0034] As shown, Figures 1 to 3 The dust removal structure 10 of the present application includes a dust removal cover 110 and a dust removal pipeline 120. The dust removal cover 110 has a dust suction end and a dust outlet end. The dust removal pipeline 120 is connected to the dust outlet end. The dust removal pipeline 120 and the dust removal cover 110 cooperate to form a dust removal passage. The negative pressure generator is in communication with the dust removal pipeline 120.

[0035] The flow guide structure 20 is arranged on the dust removal cover 110. The dust suction end is arranged towards the tab as a metal particle suction inlet. The dust outlet end is in communication with the dust removal passage to realize metal particle transportation.

[0036] The dust removal cover 110 is formed by bending a metal sheet; and the dust removal pipeline 120 is made of a flame-retardant material to prevent high-temperature welding slag from damaging or adhering to the inner wall of the dust removal pipeline 120.

[0037] In the present embodiment, the dust outlet end is arranged at the top of the dust removal cover 110, and the dust removal pipeline 120 is arranged at one side of the top of the dust removal cover 110 and extends along the height direction of the dust removal cover 110. Figure 1The Z direction is shown. The passage arranged along the height direction of the dust hood 110 is formed inside the dust hood 110, which is beneficial to the rapid flow of the gas and avoids the interference of the cover body of the dust hood 110 affecting the adsorption of the metal particles.

[0038] As Figure 3 shown, the dust hood 110 includes a first pipe section 111 and a second pipe section 112, the cross section of the first pipe section 111 is rectangular, the bottom of the first pipe section 111 forms a dust suction end, one end of the second pipe section 112 is connected to the top of the first pipe section 111, and the other end of the second pipe section 112 forms a dust outlet end with a circular opening.

[0039] Among them, the rectangular dust suction end is convenient for installing and fixing the frame 210, and the circular dust outlet end is convenient for connecting with the dust removal pipeline 120, and the structure of the dust hood 110 is beneficial to improve the convenience of the installation of the overall structure, thereby improving the assembly efficiency of the dust removal structure 10.

[0040] As Figure 4 and Figure 5 shown, the flow guide structure 20 includes a frame 210, a first flow guide plate group and a second flow guide plate group, the frame 210 is connected with the inner wall surface of the dust suction end, the frame 210 has a first plate body 211 and a second plate body 212 arranged along the length direction, and the length direction of the frame 210 is Figure 1 the X direction shown.

[0041] Among them, the frame 210 is fixedly arranged at the dust suction end and fixedly connected with the inner wall surface of the dust removal structure 10, and the frame 210 includes four plate sections arranged in sequence, wherein the first plate body 211 and the second plate body 212 are two plate sections arranged along the length direction of the frame 210.

[0042] Specifically, the flow guide structure 20 of the present application has a guiding effect on the airflow, which is convenient to realize the absorption of the metal particles and dust into the dust removal channel inside the dust removal structure 10, thereby improving the dust removal efficiency. The arrangement of the driving mechanism 30, the dust removal structure and the flow guide structure 20 of the present application is convenient for adsorbing and collecting the metal particles and dust formed after the tab welding, thereby improving the cleanliness in the process of battery cell production, and thereby improving the performance and reliability of the battery cell.

[0043] In the present embodiment, the first flow guide plate group includes a plurality of first flow guide plates 220 arranged along the length direction of the frame 210 and in parallel, the distance between the top end of the first flow guide plate 220 and the first plate body 211 along the length direction of the frame 210 is less than the distance between the bottom end of the first flow guide plate 220 and the first plate body 211, and a first guide inclined surface is formed on the first flow guide plate 220.

[0044] The first guide plates 220 are fixedly connected to the inner wall surface of the frame 210 at both ends in the width direction of the frame 210, the top end and the bottom end of the first guide plate 220 form a staggered structure in the length direction, and the guide flow channel 250 formed between the two adjacent first guide plates 220 is arranged at an angle with the height direction of the frame 210, so as to realize the oblique flow of the gas into the dust removal channel through the guide flow channel 250. The width direction of the frame 210 is Figure 1 indicated by the Y direction.

[0045] In the embodiment, the second guide plate group is arranged between the first guide plate group and the second plate body 212, the second guide plate group includes a plurality of second guide plates 230 arranged in parallel and spaced apart in the length direction of the frame 210, and the distance between the top end of the second guide plate 230 and the second plate body 212 in the length direction of the frame 210 is less than the distance between the bottom end of the second guide plate 230 and the second plate body 212.

[0046] The second guide plate 230 is fixedly connected to the inner wall surface of the frame 210 at both ends in the width direction of the frame 210, the top end and the bottom end of the second guide plate 230 form a staggered structure in the length direction of the frame 210, and the guide flow channel 250 formed between the two adjacent second guide plates 230 is arranged at an angle with the height direction of the frame 210, so as to realize the oblique flow of the gas into the dust removal channel through the guide flow channel 250. The height direction of the frame 210 is Figure 1 indicated by the Z direction.

[0047] In the embodiment, the first guide plate 220 and the second guide plate 230 are arranged in different directions, thereby forming guide flow channels 250 arranged in different directions. The application realizes the formation of guide flow channels 250 arranged in different directions at the guide structure 20 through the structural arrangement of the first guide plate group and the second guide plate group, thereby improving the flow of the gas and avoiding the reverse flow of metal particles and dust.

[0048] In the embodiment, as shown in Figure 4 and Figure 5 The guide structure 20 further includes a third guide plate 240 arranged on the frame 210, the third guide plate 240 is arranged in the height direction of the frame 210, and the first guide plate group and the second guide plate group are arranged on both sides of the third guide plate 240 in the length direction of the frame 210 and symmetrically arranged about the third guide plate 240. The uniformity of the gas flow is realized by the structural arrangement of the symmetrically arranged first guide plate group and second guide plate group, which is beneficial to further improve the guiding efficiency.

[0049] As shown in Figure 1 and Figure 2As shown, the drive mechanism 30 includes a mounting frame 310, a drive component 320, and a mounting plate 330. The drive component 320 is mounted on the mounting frame 310, and the dust removal structure 10 is mounted on the mounting plate 330. The drive end of the drive component 320 is connected to the mounting plate 330. In this application, the mounting frame 310 is fixedly mounted on the base, and the drive end of the drive component 320 drives the dust removal structure 10 to move towards or away from the electrode along the height direction of the dust removal structure 10 via the mounting plate 330.

[0050] The driving component 320 can be a motor or a cylinder, with the aim of driving the dust removal structure 10 to reciprocate along the height direction.

[0051] Specifically, the mounting plate 330 has mounting holes through which part of the dust removal structure 10 passes. The mounting plate 330 is fitted on the outer periphery of the dust removal structure 10 and is set parallel to the suction end. The structural setting of the mounting plate 330 is conducive to the stable setting of the dust removal structure 10, thereby ensuring the stability of the suction effect.

[0052] In this embodiment, the driving end of the driving component 320 drives the dust cover 110 to descend. The dust cover 110 moves to form a gap of a preset distance between itself and the welding surface of the electrode tab, for example, the height of the gap is 3mm. The negative pressure generator is turned on, and metal particles enter the dust cover 110 from all sides, taking away the welding slag on the welding surface and the surface of the battery cell separator.

[0053] In this embodiment, the drive component 320 is disposed on one side of the dust removal structure 10 in the length or width direction, avoiding the occupation of space in the height direction, thereby improving the overall spatial layout of the structure and enhancing the structural stability of the dust collection device. The height direction of the dust removal structure 10 is the Z direction as shown in the figure, and the length direction of the dust removal structure 10 is... Figure 1 As shown in the X direction, the width direction of the dust removal structure 10 is... Figure 1 Y direction shown.

[0054] like Figure 1 As shown, the drive mechanism 30 also includes a limiting mechanism 340. The limiting mechanism 340 includes a first limiting member 342 disposed on the mounting bracket 310 and a second limiting member 341 disposed on the mounting plate 330. The first limiting member 342 and the second limiting member 341 are abutted or spaced apart along the height direction of the mounting bracket 310.

[0055] The structural design of the first limiting member 342 and the second limiting member 341 in this application helps to avoid the phenomenon that the distance between the dust removal structure 10 and the electrode tab is too small or that the electrode tab is damaged due to collision, thereby improving the safety of use.

[0056] In this embodiment, three different implementation methods are provided based on the different configuration structures of the first limiting member 342 and the second limiting member 341.

[0057] In one specific embodiment, the first limiting member 342 is fixed or adjustably arranged on the mounting frame 310 along the height direction of the mounting frame 310, and the distance between the first limiting member 342 and the second limiting member 341 is controlled by adjusting the height of the first limiting member 342.

[0058] Specifically, the first limiting member 342 is a stop block fixed on the mounting frame 310, or the stop block is adjustably arranged on the mounting frame 310.

[0059] In another specific embodiment, the second limiting member 341 is adjustably arranged on the mounting plate 330 along the height direction of the mounting frame 310.

[0060] Specifically, the second limiting member 341 is a screw rotatably arranged on the mounting plate 330, and the height of the end of the screw towards the first limiting member 342 is adjusted by rotating the screw, thereby adjusting the moving distance of the mounting plate 330.

[0061] In another specific embodiment, the first limiting member 342 and the second limiting member 341 are both adjustably arranged on the mounting plate 330 along the height direction of the mounting frame 310. Specifically, the first limiting member 342 is a stop block adjustably arranged on the mounting frame 310, and the second limiting member 341 is a screw rotatably arranged on the mounting plate 330.

[0062] Specifically, the first limiting member 342 and the second limiting member 341 are both adjustably arranged, which is beneficial to improve the flexibility of the overall structure, facilitate the adjustment of the distance between the first limiting member 342 and the second limiting member 341, and further control the moving distance of the mounting plate 330.

[0063] In this embodiment, when the driving end of the driving member 320 is extended, the second limiting member 341 is in contact with the first limiting member 342, which plays a limiting role, thereby limiting the descending height of the dust removal structure 10. The size of the gap between the dust removal structure 10 and the tab surface affects the size of the air intake and the air speed during the dust removal process, which is an important factor affecting the dust removal effect. Through the structural arrangement of the first limiting member 342 and the second limiting member 341, the dust removal effect is more compatible and adaptable.

[0064] In the embodiment, the dust removal device further comprises a sensor, the sensor is arranged on the dust removal structure 10, and the sensor is used to detect the wind speed inside the dust removal channel.

[0065] Embodiment two

[0066] The embodiment provides a battery manufacturing device, which comprises a base, a camera and a plurality of dust removal devices.

[0067] The camera is arranged to face the tab of the positive electrode and the tab of the negative electrode for photographing detection, and the camera is a 6500W pixel high-definition camera.

[0068] Specifically, the plurality of dust removal devices are arranged on the base, and the camera is arranged on the base and / or the dust removal structure 10, and the camera is used to cooperate with at least one of the dust removal devices to detect dust removal.

[0069] In the embodiment, the plurality of dust removal devices are sequentially used to realize dust removal after tab welding, and the dust removal device cooperating with the camera can realize detection of the dust removal effect, and then whether dust removal needs to be continued is identified through signal feedback of the camera.

[0070] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects:

[0071] The dust removal device of the application adopts the driving mechanism 30 to realize control of the distance between the dust removal structure 10 and the tab, thereby being suitable for tabs of different thicknesses and improving applicability; and the driving mechanism 30 is arranged to realize controllable distance between the dust removal structure 10 and the tab, thereby realizing adjustment of the size of the suction force, and being conducive to improving the dust removal efficiency.

[0072] The flow guide structure 20 has a guiding effect on airflow, facilitates absorption of metal particles and dust into the dust removal channel of the dust removal structure 10, and improves the dust removal efficiency.

[0073] Obviously, the above-described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.

[0074] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components and / or combinations thereof.

[0075] It should be noted that the terms "first", "second", and the like, used in the specification and in the claims of the present application are intended to distinguish analogous objects, and do not necessarily have to be used in the description in a particular sequential or chronological order. It is to be understood that the data thus used can be interchanged, where appropriate, so that the embodiments of the present application described herein can be carried out in sequences other than those illustrated or described herein.

[0076] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A dust removal device characterized by comprising: The dust removal device is used for dust removal of the post-welding tab, and comprises: a driving mechanism (30) and a negative pressure generator; a dust removal structure (10) which is drivingly connected with the driving mechanism (30) and is provided with a driving force for moving the dust removal structure (10) towards or away from the tab, the dust removal structure (10) has a dust removal channel, the negative pressure generator is in communication with the dust removal channel for providing negative pressure, and the dust removal structure (10) has a dust suction end with an open bottom, and the dust suction end is arranged towards the tab; a flow guide structure (20) which is arranged at the dust suction end and has a flow guide channel (250) arranged in communication with the dust removal channel.

2. The dust extraction device of claim 1, wherein The dust removal structure (10) comprises: a dust removal cover (110) which has the dust suction end and a dust outlet end; a dust removal pipeline (120) which is connected with the dust outlet end, and cooperates with the dust removal cover (110) to form the dust removal channel, and the negative pressure generator is in communication with the dust removal pipeline (120).

3. The dust extraction device of claim 2, wherein The dust outlet end is arranged at the top of the dust removal cover (110), and the dust removal pipeline (120) is arranged at one side of the top of the dust removal cover (110) and extends along the height direction of the dust removal cover (110).

4. The dust extraction device of claim 2, wherein The dust removal cover (110) comprises: a first pipe section (111) which has a rectangular cross section, and the bottom of the first pipe section (111) forms the dust suction end; a second pipe section (112) which has one end connected with the top of the first pipe section (111) and the other end forming the dust outlet end with a circular opening.

5. The dust extraction device of claim 1, wherein The flow guide structure (20) comprises: a frame (210) which is connected with the inner wall surface of the dust suction end, and has a first plate body (211) and a second plate body (212) which are arranged at intervals along the length direction; a first flow guide plate group which comprises a plurality of first flow guide plates (220) arranged at intervals and in parallel along the length direction of the frame (210), and the distance between the top end of the first flow guide plate (220) and the first plate body (211) along the length direction of the frame (210) is less than the distance between the bottom end of the first flow guide plate (220) and the first plate body (211); a second flow guide plate group which is arranged between the first flow guide plate group and the second plate body (212), and comprises a plurality of second flow guide plates (230) arranged at intervals and in parallel along the length direction of the frame (210), and the distance between the top end of the second flow guide plate (230) and the second plate body (212) along the length direction of the frame (210) is less than the distance between the bottom end of the second flow guide plate (230) and the second plate body (212).

6. The dust extraction device of claim 5, wherein The flow guide structure (20) further comprises a third flow guide plate (240) arranged on the frame (210), the third flow guide plate (240) is arranged along the height direction of the frame (210), and the first flow guide plate group and the second flow guide plate group are arranged on both sides of the third flow guide plate (240) along the length direction of the frame (210) and symmetrically arranged about the third flow guide plate (240).

7. The dust extraction device of claim 1, wherein The driving mechanism (30) comprises: a mounting rack (310); a driving member (320) arranged on the mounting rack (310); a mounting plate (330), the dust removal structure (10) is arranged on the mounting plate (330), and the driving end of the driving member (320) is connected with the mounting plate (330); a limiting mechanism (340) comprising a first limiting member (342) arranged on the mounting rack (310) and a second limiting member (341) arranged on the mounting plate (330), the first limiting member (342) and the second limiting member (341) are arranged in abutment or spacing along the height direction of the mounting rack (310).

8. The dust removal device according to claim 7, wherein: the first limiting member (342) is adjustably arranged on the mounting rack (310) along the height direction of the mounting rack (310); and / or the second limiting member (341) is adjustably arranged on the mounting plate (330) along the height direction of the mounting rack (310).

9. The dust extraction device of any one of claims 1 to 8, wherein, The dust removal device further comprises: a sensor arranged on the dust removal structure (10), the sensor is used for detecting the wind speed inside the dust removal channel.

10. A battery manufacturing apparatus, characterized by comprising: Comprise: a base; a plurality of dust removal devices according to any one of claims 1 to 9, a plurality of the dust removal devices are arranged on the base; a camera arranged on the base and / or the dust removal structure (10), the camera is used for cooperating with at least one of the dust removal devices to detect dust removal.

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