Pole piece production apparatus

Abstract

This application discloses an electrode production equipment, comprising an electrode unwinding mechanism, a cutting mechanism, a web-aligning mechanism, a stacking mechanism, a first dust removal device, and a second dust removal device. The electrode unwinding mechanism is used to unwind electrode strips. The cutting mechanism is used to cut the electrode strips and form electrodes. The web-aligning mechanism is used to correct the web alignment of the electrodes. The stacking mechanism is used to stack multiple electrodes. The first dust removal device is used to remove dust from the cut end face of the electrodes and is located between the web-aligning mechanism and the stacking mechanism along the electrode's travel direction. The second dust removal device is used to remove dust from the surface of the electrodes along their thickness direction and is located between the web-aligning mechanism and the cutting mechanism along the electrode's travel direction. This application can effectively remove dust from the cut end face and surface of the electrodes before stacking, reducing dust particles adhering to the electrodes, which is beneficial for improving the electrode production yield and reducing the risk of battery failure and short circuit during insulation testing.

Description

Technical Field

[0001] This application belongs to the field of battery manufacturing technology, and in particular relates to an electrode production equipment. Background Technology

[0002] With the development of new energy technologies, batteries are being used more and more widely, for example in mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and power tools.

[0003] Electrodes are an important component of batteries. In battery manufacturing processes, improving the production yield of electrodes to reduce the risk of battery insulation test failure is a research direction in this field. Summary of the Invention

[0004] This application provides an electrode production equipment that helps improve the production yield of electrode sheets and reduce the risk of battery insulation test failure.

[0005] This application provides an electrode production apparatus, comprising an electrode unwinding mechanism, a cutting mechanism, a web-aligning mechanism, a stacking mechanism, a first dust removal device, and a second dust removal device. The electrode unwinding mechanism is used to unwind electrode strips. The cutting mechanism is used to cut the electrode strips and form electrodes. The web-aligning mechanism is used to correct the web alignment of the electrodes. The stacking mechanism is used to stack multiple electrodes. The first dust removal device is used to remove dust from the cut end face of the electrodes and is located between the web-aligning mechanism and the stacking mechanism along the electrode's travel direction. The second dust removal device is used to remove dust from the surface of the electrodes along their thickness direction and is located between the web-aligning mechanism and the cutting mechanism along the electrode's travel direction. This application can effectively remove dust from the cut end face and surface of the electrodes before stacking, reducing dust particles adhering to the electrodes, which is beneficial for improving the electrode production yield and reducing the risk of battery failure and short circuit during insulation testing.

[0006] In some embodiments, the first dust removal device includes a drive mechanism and two air knives. The two air knives are spaced apart along a direction perpendicular to the cut end face of the electrode. The drive mechanism is connected to the two air knives and is configured to drive the two air knives to move towards each other or away from each other. Before the electrode reaches the first dust removal device, the drive mechanism can drive the two air knives to move away from each other, so that the electrode can move more smoothly between the two air knives, which helps to reduce interference between the air knives and the electrode and reduce the risk of damaging the electrode. Then, the drive mechanism drives the two air knives to move towards each other, so that the two air knives approach the two cut end faces of the electrode respectively, thereby effectively removing dust from the two cut end faces and improving the dust removal effect.

[0007] In some embodiments, each air knife has a first recess on the side facing the other air knife. The air knife includes a first blowing port and a first suction port, both of which are connected to the first recess. The air knife is configured to blow airflow into the first recess through the first blowing port and adsorb dust within the first recess through the first suction port. When the first dust removal device is in dust removal mode, the drive mechanism drives the two air knives to move towards each other so that the end of the electrode sheet with the cutting end face is accommodated in the first recess. Most of the dust blown away by the air knife can be confined within the first recess, which facilitates more effective dust adsorption through the first suction port. Simultaneously, it reduces the dust diffusion range and lowers the risk of dust spreading outwards and adhering to production equipment, thus causing secondary contamination of the electrode sheet.

[0008] In some embodiments, the air knife includes a first wall and two second walls, the two second walls being disposed opposite to each other, and the first wall connecting between the two second walls, forming a first recess. The first wall faces the cutting end face of the electrode sheet, a first air blowing port is disposed on the first wall, and each second wall is provided with a first air suction port. In dust removal mode, the airflow blown out by the first air blowing port can act more effectively on the cutting end face, which is beneficial to improving the dust removal effect, and can adsorb dust in the first recess from different directions, which is beneficial to improving the dust adsorption effect, thereby improving the dust removal effect on the cutting end face of the electrode sheet.

[0009] In some embodiments, the second dust removal device is configured to adsorb dust from the electrode surface using negative pressure. This effectively removes dust from the electrode surface while minimizing damage and improving electrode production yield.

[0010] In some embodiments, the second dust removal device includes a second air blowing port and a second air suction port. The second dust removal device is configured to blow airflow toward the surface of the electrode sheet along its thickness direction through the second air blowing port and to adsorb dust separated from the surface of the electrode sheet through the second air suction port. The second air blowing port can promote the separation of dust from the surface of the electrode sheet, so that the dust can be adsorbed to the second air suction port under negative pressure, which is beneficial to improving the dust removal effect on the surface of the electrode sheet.

[0011] In some embodiments, the second air outlet extends straight along the first direction, and the second air inlet has a first end and a second end opposite to each other along the first direction. The second air inlet extends in a bent or flexed manner from the first end to the second end, and the first direction is perpendicular to the traveling direction of the electrode and the thickness direction of the electrode. This extends the length of the second air inlet, increases its area, and expands the range of dust that can be adsorbed, thereby improving the dust adsorption effect.

[0012] In some embodiments, the electrode production equipment includes a third dust removal device disposed between the cutting mechanism and the second dust removal device along the electrode's travel direction. The third dust removal device is configured to remove dust from at least the cut end face of the electrode. The third dust removal device's ability to remove dust from the cut end face of the electrode after cutting by the cutting mechanism helps reduce the contamination level of dust from the cut end face to other workstations or equipment, and lowers the risk of secondary contamination of subsequent electrode production.

[0013] In some embodiments, the electrode production equipment includes a first conveying mechanism for conveying the electrode in a direction perpendicular to the cut end face of the electrode; a third dust removal device includes a roller brush and a dust suction mechanism, the roller brush being disposed on the side of the first conveying mechanism facing the electrode, the roller brush being configured to be bidirectionally rotatable, the rotation axis of the roller brush being perpendicular to the traveling direction and thickness direction of the electrode; the dust suction mechanism being configured to use negative pressure to adsorb at least a portion of the dust brushed away by the roller brush. Through the bidirectional rotation of the roller brush, the direction in which the roller brush passes over the cut end face is opposite to the orientation of the cut end face, which helps to increase the contact area between the roller brush and the cut end face, reduces the risk of the roller brush not reaching the cut end face, and improves the dust removal effect on the cut end face.

[0014] In some embodiments, a dust collection mechanism is mounted on the side of the first conveying mechanism facing the electrode. The dust collection mechanism has an internal first negative pressure chamber for creating a negative pressure environment. A second recess is provided on the side of the dust collection mechanism facing the first conveying mechanism, and the second recess communicates with the first negative pressure chamber. A portion of the roller brush is housed in the second recess, and another portion of the roller brush is located outside the second recess for contacting the electrode. Most of the dust removed by the roller brush can be confined within the second recess, which facilitates the dust collection mechanism in more effectively adsorbing dust into the first negative pressure chamber. Simultaneously, the second recess also limits the outward diffusion of dust removed by the roller brush, reducing the risk of dust adhering to other equipment and causing secondary contamination of the electrode.

[0015] In some embodiments, the dust collection mechanism includes a third wall and two fourth walls, the two fourth walls being arranged opposite each other along the traveling direction of the electrode, the third wall connecting the two fourth walls, and the third wall and the two fourth walls enclosing a second recess; the third wall and each of the fourth walls are provided with a first through hole, the first through hole connecting the first negative pressure chamber and the second recess. Therefore, dust in the second recess can be adsorbed from multiple different directions, reducing the risk that some dust cannot be effectively adsorbed due to the blocking or obstruction of some dust by the roller brush, thus improving the dust adsorption efficiency and adsorption effect in the second recess.

[0016] In some embodiments, the third dust removal device includes a lever embedded in the bristles of the roller brush. The lever extends parallel to the rotation axis of the roller brush, and the roller brush is rotatably mounted relative to the lever. The lever can dislodge dust hidden within the bristles by actuating the bristles. The dislodged dust can be adsorbed into the first negative pressure chamber under negative pressure, which facilitates self-cleaning of the roller brush and reduces the possibility of dust hidden within the roller brush contaminating the electrode.

[0017] In some embodiments, the electrode production equipment further includes a fourth dust removal device located between the cutting mechanism and the second dust removal device along the electrode's travel direction. The fourth dust removal device is configured to use ultrasonic vibration to vibrate the electrode and utilize negative pressure to adsorb dust separated from the electrode's surface. The ultrasonic waves can disrupt the airflow adhesion layer on the electrode surface, causing the fine dust particles encased in the airflow adhesion layer to be peeled off. The dust separated from the electrode surface is adsorbed by the fourth dust removal device under negative pressure, thereby achieving the purpose of dust removal from the electrode surface.

[0018] In some embodiments, the electrode production equipment includes a second conveying mechanism and an adsorption mechanism. The second conveying mechanism is used to convey the electrode, and the adsorption mechanism and a fourth dust removal device are disposed opposite to each other. The second conveying mechanism is configured to drive the electrode through the space between the fourth dust removal device and the adsorption mechanism. The adsorption mechanism is configured to generate a negative pressure on the side of the electrode facing away from the fourth dust removal device, so that the electrode adheres to the second conveying mechanism. The negative pressure generated by the adsorption mechanism can at least partially overcome the adsorption effect of the fourth dust removal device on the electrode when adsorbing dust, so that the electrode adheres to the second conveying mechanism and moves synchronously with the second conveying mechanism, reducing the risk of the electrode detaching from the second conveying mechanism or being adsorbed to the fourth dust removal device, which is conducive to the smooth movement of the electrode, reduces damage to the electrode, and improves the production yield of the electrode.

[0019] In some embodiments, the second conveying mechanism includes a conveyor belt for carrying and moving the electrode sheet. The conveyor belt has multiple second through holes. The second through holes in the portion of the conveyor belt located between the adsorption mechanism and the fourth dust removal device are connected to the adsorption mechanism. The negative pressure generated by the adsorption mechanism can act on the electrode sheet through the through holes, which is beneficial for adsorbing the electrode sheet and also increases the area of ​​the conveyor belt used for attaching the electrode sheet, thereby improving the stability of the second conveying mechanism in supporting the electrode sheet.

[0020] In some embodiments, the conveyor belt includes a conveying section for attaching electrode sheets, with a fourth dust removal device and an adsorption mechanism located on opposite sides of the conveying section. A second conveying mechanism defines a second negative pressure chamber for creating a negative pressure environment. The second negative pressure chamber is located on the side of the conveying section opposite to the fourth dust removal device and communicates with a second through-hole on the conveying section. During the electrode sheet conveying process by the adsorption mechanism, the electrode sheet is always adsorbed onto the conveyor belt, allowing the electrode sheet to move synchronously with the conveyor belt, which improves the conveying stability of the electrode sheet. Both the second conveying mechanism and the adsorption mechanism can adsorb the electrode sheet. The adsorption mechanism can resist the adsorption effect applied to the electrode sheet by the fourth dust removal device. The negative pressure in the second negative pressure chamber does not need to be set too high, which helps reduce energy consumption, lowers the risk of damaging the electrode sheet due to excessive negative pressure in the second negative pressure chamber, and improves the production yield of the electrode sheet.

[0021] In some embodiments, the fourth dust removal device includes a positive pressure section, a negative pressure section, and an ultrasonic generator. The positive pressure section and the negative pressure section are arranged along the traveling direction of the electrode. The positive pressure section defines a positive pressure cavity for forming a positive pressure environment. The ultrasonic generator is disposed in the positive pressure cavity. An air outlet channel is provided on the side of the positive pressure section facing the second conveying mechanism, and the air outlet channel is connected to the positive pressure cavity. The negative pressure section defines a third negative pressure cavity for forming a negative pressure environment. A dust suction channel is provided on the side of the negative pressure section facing the second conveying mechanism, and the dust suction channel is connected to the third negative pressure cavity.

[0022] In some embodiments, the adsorption mechanism has a fourth negative pressure chamber defined inside for creating a negative pressure environment. The adsorption mechanism has a first opening on the side facing the fourth dust removal device, and the first opening communicates with the fourth negative pressure chamber. A second opening is formed near the end of the dust collection channel close to the adsorption mechanism. Along the arrangement direction of the fourth dust removal device and the adsorption mechanism, the projections of the first opening and the second opening at least partially overlap. The adsorption effect of the second negative pressure chamber on the electrode and the adsorption effect of the fourth negative pressure chamber on the electrode can at least partially cancel each other out, reducing the adverse effects on the electrode during the adsorption of dust by the fourth dust removal device and improving the stability of electrode transport.

[0023] In some embodiments, the adsorption mechanism has a fourth negative pressure chamber defined inside for creating a negative pressure environment. The adsorption mechanism has a first opening on the side facing the fourth dust removal device, and the first opening communicates with the fourth negative pressure chamber. A third opening is formed at the end of the air outlet channel near the adsorption mechanism. Along the arrangement direction of the fourth dust removal device and the adsorption mechanism, the projections of the first opening and the third opening are separate. The positive pressure chamber and the fourth negative pressure chamber can act on different areas of the electrode, thereby mitigating the superposition of forces exerted by the positive pressure chamber and the fourth negative pressure chamber on the same area of ​​the electrode. This helps to reduce the stress on the electrode, lower the risk of electrode damage, and improve the production yield of the electrode.

[0024] In some embodiments, the second conveying mechanism includes a conveyor belt with a conveying section for carrying the electrode sheet. The conveying section has a conveying surface for attaching the electrode sheet. There are two second conveying mechanisms arranged along the traveling direction of the electrode sheet. Along the arrangement direction of the fourth dust removal device and the adsorption mechanism, a fourth dust removal device and an adsorption mechanism are respectively provided on both sides of the conveying section of each second conveying mechanism. The conveying surfaces of the two second conveying mechanisms face opposite directions. This allows for double-sided dust removal of the electrode sheet. Furthermore, the fourth dust removal device directly faces the surface of the electrode sheet to be dusted, and there is no obstruction structure between the fourth dust removal device and the surface of the electrode sheet to be dusted, which is beneficial for improving the dust removal effect. Simultaneously, the surface of the electrode sheet facing away from the fourth dust removal device does not require dust removal; only a second through-hole for airflow needs to be opened on the conveyor belt. This helps increase the area of ​​the conveyor belt used to support the electrode sheet, reducing the risk of excessive stress on some areas of the electrode sheet due to localized stress, which could easily damage the electrode sheet. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A schematic structural diagram of an electrode production apparatus provided for some embodiments of this application.

[0027] Figure 2 This is a schematic diagram of the structure of the first dust removal device of the electrode production equipment provided in some embodiments of this application.

[0028] Figure 3 for Figure 2 The diagram shows a side view of the first dust removal device.

[0029] Figure 4 for Figure 3 A magnified structural diagram of region A in the middle.

[0030] Figure 5 This is a schematic diagram of the structure of the second dust removal device of the electrode production equipment provided in some embodiments of this application.

[0031] Figure 6 This is a schematic diagram of the structure of the third dust removal device and the first conveying mechanism of the electrode production equipment provided in some embodiments of this application.

[0032] Figure 7 For along Figure 6 A cross-sectional view diagram taken by the section line BB in the diagram.

[0033] Figure 8 For along Figure 6 A cross-sectional view diagram taken by the section line CC in the diagram.

[0034] Figure 9 This is a schematic diagram of the structure of the fourth dust removal device, the second conveying mechanism, and the adsorption mechanism of the electrode production equipment provided in some embodiments of this application.

[0035] Figure 10 for Figure 9 The diagram shows a cross-sectional view of the fourth dust removal device, the second conveying mechanism, and the adsorption mechanism.

[0036] Figure 11 for Figure 10 A magnified structural diagram of region D in the middle.

[0037] Figure 12 This is a schematic diagram of the structure of the conveyor platform of the electrode production equipment provided in some embodiments of this application.

[0038] Figure 13 This is a schematic diagram of the structure of the fourth dust removal device of the electrode production equipment provided in some embodiments of this application.

[0039] In the attached image:

[0040] Electrode production equipment 1, electrode belt 2;

[0041] Electrode 3, cut end face 301, surface 302;

[0042] Electrode unwinding mechanism 10; cutting mechanism 20; correction mechanism 30; stacking mechanism 40; first conveying mechanism 91;

[0043] First dust removal device 50, drive mechanism 51, drive unit 511, air knife 52, first recess 521, first air blowing port 522, first air suction port 523, first wall 524, second wall 525.

[0044] Second dust removal device 60, second air blowing port 61, second air suction port 62, first end 621, second end 622;

[0045] Third dust removal device 70, roller brush 71, rotating shaft 711, roller 712, brush bristles 713, dust suction mechanism 72, first negative pressure chamber 721, second recess 722, third wall 723, fourth wall 724, first through hole 725, lever 73.

[0046] The fourth dust removal device 80 includes a positive pressure section 81, a positive pressure chamber 811, an air outlet channel 812, a third opening 8121, a negative pressure section 82, a third negative pressure chamber 821, a dust suction channel 822, a second opening 8221, and an ultrasonic generator 83.

[0047] Second conveying mechanism 92, conveyor belt 921, second through hole 9211, conveying section 9212, conveying surface 9212a, transmission wheel 922, second negative pressure chamber 923, conveying platform 924, connecting port 9241, support beam 9242.

[0048] Adsorption mechanism 93, fourth negative pressure chamber 931, first opening 932;

[0049] The direction of travel is X, the first direction is Y, and the thickness direction is Z. Detailed Implementation

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0055] 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.

[0056] In this application, "multiple" means two or more (including two).

[0057] In the embodiments of this application, "parallel" includes not only the case of absolute parallelism, but also the case of approximate parallelism as commonly understood in engineering; similarly, "perpendicular" also includes not only the case of absolute perpendicularity, but also the case of approximate perpendicularity as commonly understood in engineering.

[0058] Battery cell manufacturing processes are generally divided into stacked and wound types. Stacked cells are typically composed of anode sheets, separators, and cathode sheets stacked together. In the battery cell manufacturing process, the anode and cathode sheets must first be cut to the required lengths before the stacking process. Compared to wound cells, stacked cells have dozens of times more cutting ends for the anode and cathode, resulting in a higher probability of insulation failure.

[0059] During the electrode cutting process, the electrodes are squeezed by the cutter, which can easily generate conductive particles that adhere to the cut end face and / or surface of the electrodes. In related technologies, a dust removal station is usually set up at the electrode preparation stage. However, the electrodes that have undergone dust removal at the electrode preparation stage are prone to secondary contamination during the transfer process before entering the stacking table, which can lead to short circuits during battery insulation testing or use.

[0060] In view of this, this application provides a technical solution by setting a first dust removal device between the electrode correction mechanism and the stacking mechanism, and a second dust removal device between the electrode correction mechanism and the cutting mechanism. The first dust removal device can remove dust from the cut end face of the electrode after electrode correction and before electrode stacking, reducing secondary contamination that may occur on the cut end face of the electrode during the electrode transfer to the correction mechanism and during the electrode correction process. The second dust removal device can remove dust from the surface of the electrode along the thickness direction before electrode correction, reducing secondary contamination that may occur on the electrode surface during the electrode transfer to the correction mechanism. The combination of the first and second dust removal devices can effectively remove dust from the cut end face and surface of the electrode before stacking, reducing the dust particles attached to the electrode, which is beneficial to improving the production yield of the electrode and reducing the risk of battery failure and short circuit during insulation testing.

[0061] The electrode production equipment provided in the embodiments of this application will be described below with reference to the accompanying drawings. For ease of understanding, some drawings also show electrode strip 2 and electrode 3.

[0062] Figure 1 This is a schematic structural diagram of the electrode production equipment provided in some embodiments of this application. Figure 2 This is a schematic diagram of the structure of the first dust removal device of the electrode production equipment provided in some embodiments of this application. Figure 3 for Figure 2 The diagram shows a side view of the first dust removal device. Figure 4 for Figure 3 A magnified structural diagram of region A in the middle. Figure 5 This is a schematic diagram of the structure of the second dust removal device of the electrode production equipment provided in some embodiments of this application.

[0063] Reference Figures 1 to 5 The electrode production equipment 1 provided in this application embodiment includes an electrode unwinding mechanism 10, a cutting mechanism 20, a correction mechanism 30, a stacking mechanism 40, a first dust removal device 50, and a second dust removal device 60. The electrode unwinding mechanism 10 is used to unwind electrode strips 2. The cutting mechanism 20 is used to cut the electrode strips 2 and form electrode sheets 3. The correction mechanism 30 is used to correct the deviation of the electrode sheets 3. The stacking mechanism 40 is used to stack multiple electrode sheets 3. The first dust removal device 50 is used to remove dust from the cut end face 301 of the electrode sheet 3, and is located between the correction mechanism 30 and the stacking mechanism 40 along the traveling direction of the electrode sheet 3. The second dust removal device 60 is used to remove dust from the surface 302 of the electrode sheet 3 along its own thickness direction Z, and is located between the correction mechanism 30 and the cutting mechanism 20 along the traveling direction of the electrode sheet 3.

[0064] The electrode unwinding mechanism 10 may include an unwinding roller and an unwinding drive mechanism. The electrode strip 2 is wound on the unwinding roller, and the unwinding drive mechanism is connected to the unwinding roller to drive the unwinding roller to rotate, thereby releasing the electrode strip 2.

[0065] The cutting mechanism 20 can cut the electrode strip 2 using a laser or a cutting tool.

[0066] The correction mechanism 30 can correct the position of the electrode 3 so that the electrode 3 is stacked more uniformly and in a more standardized manner in the stacking mechanism 40.

[0067] The first dust removal device 50 can use negative pressure adsorption, brushing, colloid adhesion or other suitable methods to remove dust from the cut end face of the electrode 3.

[0068] The second dust removal device 60 can use negative pressure adsorption, brushing, colloid adhesion or other suitable methods to remove dust from the surface 302 of the electrode 3 along its own thickness direction.

[0069] Along the traveling direction of the electrode sheet 3, the electrode sheet unwinding mechanism 10, the cutting mechanism 20, the second dust removal device 60, the correction mechanism 30, the first dust removal device 50, and the stacking mechanism 40 are arranged in sequence.

[0070] Optionally, along the traveling direction of the electrode 3, the first dust removal device 50 can be located adjacent to the upstream of the stacking mechanism 40. The first dust removal device 50 and the stacking mechanism 40 are arranged next to each other, and no other processes are set between the first dust removal device 50 and the stacking mechanism 40. The electrode 3 after being dusted by the first dust removal device 50 can be directly stacked in the stacking mechanism 40, which helps to reduce the contamination of the electrode 3 between the first dust removal device 50 and the stacking mechanism 40.

[0071] In some examples, along the traveling direction of the electrode 3, the first dust removal device 50 may be located adjacent to the downstream of the correction mechanism 30, with the first dust removal device 50 and the correction mechanism 30 arranged adjacent to each other, and no other processes are provided between the first dust removal device 50 and the correction mechanism 30. In other examples, along the traveling direction of the electrode 3, other processes may also be provided between the first dust removal device 50 and the correction mechanism 30.

[0072] In some examples, along the traveling direction of the electrode 3, the second dust removal device 60 may be located adjacent to the upstream of the correction mechanism 30, with the second dust removal device 60 and the correction mechanism 30 arranged adjacent to each other, and no other processes are provided between the second dust removal device 60 and the correction mechanism 30. In other examples, other processes may also be provided between the second dust removal device 60 and the correction mechanism 30.

[0073] In some embodiments, at least one of the electrode unwinding mechanism 10, cutting mechanism 20, correction mechanism 30 and stacking mechanism 40 may also be equipped with a dust removal structure.

[0074] For example, the electrode unwinding mechanism 10 may itself be equipped with an unwinding dust removal unit, which can remove dust from both surfaces of the unwound electrode strip. The electrode unwinding mechanism 10 may also be equipped with an iron removal unit, an antistatic unit, and a dust cover. The iron removal unit and the antistatic unit are used to remove iron and static electricity from the two surfaces of the electrode strip, respectively, to improve the cleaning effect of the electrode strip. The dust cover is used to prevent dust in the production environment from adhering to the surface of the electrode strip.

[0075] For example, the cutting mechanism 20 may be provided with a cutting chamber, in which the cutting mechanism 20 cuts the electrode strip to form the electrode 3. The cutting mechanism 20 itself may be provided with a cutting and dust removal unit, which can remove dust from the cutting chamber to reduce the amount of dust in the cutting chamber, thereby reducing the amount of dust adhering to the surface of the electrode 3. Furthermore, the cutting mechanism 20 may also remove iron and static electricity from the surface of the electrode to improve the cleaning effect of the electrode.

[0076] For example, the correction mechanism 30 may include a correction table and a correction dust removal unit, which is disposed on the correction table and is used to remove dust from the correction table.

[0077] For example, the stacking mechanism 40 may include a stacking table and a stacking dust removal unit, which is disposed on the stacking table and is used to remove dust from the stacking table.

[0078] The first dust removal device 50 removes dust from the cut end face 301 of the electrode 3 after the electrode 3 is corrected and before the electrode 3 is stacked, reducing secondary contamination that may occur on the cut end face 301 of the electrode 3 during the process of the electrode 3 being conveyed to the correction mechanism 30 and during the correction process of the electrode 3 by the correction mechanism 30. The second dust removal device 60 removes dust from the surface 302 of the electrode 3 along the thickness direction Z before the electrode is corrected, reducing secondary contamination that may occur on the surface of the electrode 3 during the process of the electrode being conveyed to the correction mechanism 30. The combination of the first dust removal device 50 and the second dust removal device 60 can effectively remove dust from the cut end face 301 and surface 302 of the electrode 3 before stacking, reducing the dust particles attached to the electrode 3, which is beneficial to improving the production yield of the electrode 3 and reducing the risk of failure and short circuit of the battery with the electrode 3 during insulation testing.

[0079] In some embodiments, the first dust removal device 50 includes a drive mechanism 51 and two air knives 52. The two air knives 52 are spaced apart along a direction perpendicular to the cutting end face 301 of the electrode 3. The drive mechanism 51 is connected to the two air knives 52 and is configured to drive the two air knives 52 to move toward each other or away from each other.

[0080] The two cutting end faces 301 of the electrode 3 are arranged opposite to each other, and the two air knives 52 are used to remove dust from the two cutting end faces 301 of the electrode 3.

[0081] The drive mechanism 51 may include at least two drive units 511, and each air knife 52 is connected to at least one drive unit 511. The drive unit 511 may be a telescopic cylinder mechanism, a gear and rack mechanism, a worm gear mechanism, or other suitable mechanism capable of driving the air knife to translate.

[0082] The two air knives 52 can translate in a direction perpendicular to the cutting end face 301 under the driving action of the driving mechanism 51. When the driving mechanism 51 drives the two air knives 52 to move towards each other, the distance between the two air knives 52 can be reduced, and the air knives 52 can be closer to the cutting end face 301 of the electrode 3, which is beneficial to improving the dust removal effect of the air knives 52 on the cutting end face 301. When the driving mechanism 51 drives the two air knives 52 to move away from each other, the distance between the two air knives 52 can be increased, which is beneficial to reducing the interference between the air knives 52 and the electrode 3 and reducing the risk of damaging the electrode 3.

[0083] Before the electrode 3 reaches the first dust removal device 50, the two air knives 52 can be driven to move away from each other by the drive mechanism 51, so that the electrode 3 can move more smoothly between the two air knives 52. Then, the two air knives 52 are driven to move towards each other by the drive mechanism 51, so that the two air knives 52 are close to the two cutting end faces 301 of the electrode 3 respectively, thereby effectively removing dust from the two cutting end faces 301.

[0084] In some embodiments, each air knife 52 has a first recess 521 on the side facing the other air knife 52. The air knife 52 includes a first air blowing port 522 and a first air suction port 523, both of which are connected to the first recess 521. The air knife 52 is configured to blow airflow into the first recess 521 through the first air blowing port 522 and to adsorb dust in the first recess 521 through the first air suction port 523. When the first dust removal device 50 is in the dust removal state, the drive mechanism 51 drives the two air knives 52 to move towards each other so that the end of the electrode 3 with the cut end face 301 is accommodated in the first recess 521.

[0085] The first recess 521 is open at least toward the other air knife 52 to allow a portion of the electrode 3 to extend into and be accommodated within the first recess 521.

[0086] The first air outlet 522 can be a narrow air outlet extending along the length of the cutting end face 301. The air knife 52 can blow out a high-speed airflow through the first air outlet 522. The high-speed airflow impacts the cutting end face 301 and can remove at least part of the dust on the cutting end face 301.

[0087] The first air intake 523 is connected to the first recess 521. At least a portion of the area where the first recess 521 is connected to the first air intake 523 can form a negative pressure environment, which is beneficial for adsorbing at least a portion of the dust removed from the cut end face 301 through the first air intake 523.

[0088] In the dust removal state, the end of the electrode 3 with the cut end face 301 is accommodated in the first recess 521. Most of the dust blown away by the air knife 52 can be confined in the first recess 521, which is conducive to the air knife 52 more effectively adsorbing dust through the first air intake 523. At the same time, it can also reduce the diffusion range of dust and reduce the risk of dust spreading outward and adhering to the production equipment, thereby causing secondary pollution to the electrode 3.

[0089] In some embodiments, the air knife 52 includes a first wall 524 and two second walls 525, which are disposed opposite to each other. The first wall 524 is connected between the two second walls 525, and the first wall 524 and the two second walls 525 together form a first recess 521. The first wall 524 faces the cutting end face 301 of the electrode 3. A first air blowing port 522 is provided on the first wall 524, and each of the second walls 525 is provided with a first air intake port 523.

[0090] The two second walls 525 are arranged opposite each other along the thickness direction of the electrode 3. In the dust removal state, the cut end face 301 of the electrode 3 can be located between the two second walls 525.

[0091] In dust removal mode, the first air outlet 522 and the cutting end face 301 can be arranged opposite each other in a direction perpendicular to the cutting end face 301. Optionally, the projection of the first air outlet 522 is located within the projection of the cutting end face 301 in the direction perpendicular to the cutting end face 301. Thus, the airflow blown out by the first air outlet 522 can act approximately perpendicularly on the cutting end face 301, which is beneficial for more effectively blowing away the dust on the cutting end face 301.

[0092] Optionally, in the dust removal state, the projection of the cut end face 301 along the thickness direction of the electrode 3 can be located within the projection of the first air intake 523, which can reduce the distance between the dust separated from the cut end face 301 and the first air intake 523, and help improve the dust removal efficiency.

[0093] In this embodiment, the first air outlet 522 is disposed on the first wall 524 facing the cutting end face 301, and the first air outlet 522 is disposed on the two second walls 525. In the dust removal state, the airflow blown out by the first air outlet 522 can act more effectively on the cutting end face 301, which is beneficial to improving the dust removal effect. It can also adsorb the dust in the first recess 521 from different directions, which is beneficial to improving the dust adsorption effect, thereby improving the dust removal effect on the cutting end face 301 of the electrode 3.

[0094] In some embodiments, the second dust removal device 60 is configured to use negative pressure to adsorb dust on the surface of the electrode 3.

[0095] The dust on the surface 302 of the electrode 3 along its thickness direction Z mostly originates from the spatial environment or equipment contamination. This dust has relatively weak adhesion to the electrode 3 and is relatively easy to remove. Therefore, the second dust removal device 60 in this embodiment uses negative pressure to adsorb dust from the surface of the electrode 3. This effectively removes dust from the surface of the electrode 3 while minimizing damage to the surface and improving the production yield of the electrode 3.

[0096] In some embodiments, the second dust removal device 60 is configured to utilize ultrasonic vibration of the electrode 3.

[0097] The second dust removal device 60 generates ultrasonic waves and applies them to the electrode 3, causing the electrode 3 to vibrate slightly under the influence of the ultrasonic waves. The ultrasonic waves can break down the airflow adhesion layer on the surface of the electrode 3, allowing the fine dust particles encased in the airflow adhesion layer to be peeled off. The dust separated from the surface of the electrode 3 is then adsorbed under negative pressure, thereby achieving the purpose of dust removal on the surface 302 of the electrode 3 and improving the dust removal effect.

[0098] In some embodiments, the second dust removal device 60 includes a second air blowing port 61 and a second air suction port 62. The second dust removal device 60 is configured to blow airflow toward the surface of the electrode 3 along its own thickness direction through the second air blowing port 61 and to adsorb dust separated from the surface of the electrode 3 through the second air suction port 62.

[0099] The second air inlet 61 can be one or more.

[0100] The second air inlet 62 can be one or more.

[0101] Optionally, there is one second air blowing port 61 and two second air suction ports 62. Along the traveling direction of the electrode 3, the two second air suction ports 62 are located on both sides of the second air blowing port 61. The two second air suction ports 62 can respectively adsorb the dust raised from the surface of the electrode 3 in all directions, which is conducive to more comprehensive adsorption of the raised dust and improves the dust removal effect of the electrode 3.

[0102] The second air outlet 61 can promote the separation of dust from the surface of the electrode 3, so that the dust can be adsorbed to the second air inlet 62 under negative pressure, which is beneficial to improving the dust removal effect on the surface of the electrode 3.

[0103] In some embodiments, the second air outlet 61 extends straight along the first direction Y, and the second air inlet 62 has a first end 621 and a second end 622 opposite to each other along the first direction Y. The second air inlet 62 extends or bends from the first end 621 to the second end 622. The first direction Y is perpendicular to the traveling direction X of the electrode 3 and the thickness direction Z of the electrode 3.

[0104] When the dimension of the second dust removal device 60 along the first direction Y is fixed, the second suction port 62 can be bent or extended to increase the extension length of the second suction port 62, increase the area of ​​the second suction port 62, expand the range of dust that can be adsorbed, and improve the dust adsorption effect.

[0105] Figure 6 This is a schematic diagram of the structure of the third dust removal device and the first conveying mechanism of the electrode production equipment provided in some embodiments of this application. Figure 7 For along Figure 6 A cross-sectional view diagram taken by the section line BB in the diagram. Figure 8 For along Figure 6 A cross-sectional view diagram taken by the section line CC in the diagram.

[0106] Reference Figures 6 to 8 In some embodiments, the electrode production equipment 1 includes a third dust removal device 70, which is located between the cutting mechanism 20 and the second dust removal device 60 along the traveling direction of the electrode 3. The third dust removal device 70 is configured to remove dust from at least the cutting end face 301 of the electrode 3.

[0107] Optionally, along the traveling direction of the electrode 3, the third dust removal device 70 may be arranged adjacent to the downstream of the cutting mechanism 20. The third dust removal device 70 and the cutting mechanism 20 are arranged next to each other, and no other process may be set between the third dust removal device 70 and the cutting mechanism 20.

[0108] In some examples, along the traveling direction of the electrode 3, the third dust removal device 70 may be located adjacent to the second dust removal device 60 upstream, and no other process is provided between the third dust removal device 70 and the second dust removal device 60. In other examples, along the traveling direction of the electrode 3, other processes may also be provided between the third dust removal device 70 and the second dust removal device 60, for example, a fourth dust removal device may be provided between the third dust removal device 70 and the second dust removal device 60.

[0109] The third dust removal device 70 can use negative pressure adsorption, brushing, colloid adhesion or other suitable methods to remove dust from the cut end face 301 of the electrode 3.

[0110] The third dust removal device 70 and the first dust removal device 50 may have the same or different structures.

[0111] After the cutting mechanism 20 cuts the electrode strip to form the electrode 3, there may be some particles that are partially removed from the cut end face 301 of the electrode 3. These particles may not have been completely cut off and have a relatively strong connection with the cut end face 301. Therefore, the third dust removal device 70 can be selected as a fourth dust removal device with a brush, so as to effectively remove the partially removed dust particles on the cut end face 301 by utilizing the strong brushing action of the brush.

[0112] After the cutting mechanism 20 cuts the electrode strip to form the electrode 3, there may be a lot of particles on the cut end face 301. The third dust removal device 70 can remove dust from the cut end face 301 of the electrode 3 after it is cut by the cutting mechanism 20, which helps to reduce the degree of dust pollution on other workstations or equipment and reduce the risk of secondary pollution of the electrode 3 in the future.

[0113] In some embodiments, the electrode production equipment 1 includes a first conveying mechanism 91 for conveying the electrode 3 along a direction perpendicular to the cut end face 301 of the electrode 3. The third dust removal device 70 includes a roller brush 71 and a dust collection mechanism 72. The roller brush 71 is disposed on the side of the first conveying mechanism 91 facing the electrode 3 and is configured to be bidirectionally rotatable. The rotation axis 711 of the roller brush 71 is perpendicular to the traveling direction X and the thickness direction Z of the electrode 3. The dust collection mechanism 72 is configured to use negative pressure to adsorb at least a portion of the dust removed by the roller brush 71.

[0114] The dust collection mechanism 72 can adsorb dust by negative pressure, electrostatic or other suitable means.

[0115] The bidirectional rotatable setting of the roller brush 71 means that the roller brush 71 can rotate in the forward direction (e.g., clockwise) or in the reverse direction (e.g., counterclockwise) around the rotation axis 711.

[0116] The roller brush 71 can rotate within a wide range of 360° around the rotation axis 711, or within a narrow range of less than 360°. Optionally, the roller brush 71 can rotate within an angle range of -60° to 60° around the rotation axis 711. In this case, the roller brush 71 can oscillate back and forth within its rotatable angle range.

[0117] The roller brush 71 may include a roller 712 and bristles 713, with the bristles 713 distributed on the outer circumferential surface of the roller 712. The roller 712 is capable of bidirectional rotation about a rotation axis 711, thereby driving the bristles 713 to rotate bidirectionally.

[0118] The rotation axis 711 of the roller brush 71 is perpendicular to the traveling direction X and the thickness direction Z of the electrode 3. During the rotation of the roller brush 71, the bristles 713 can contact the cut end face 301 of the electrode 3, thereby removing dust from the cut end face 301. During the conveying process of the electrode 3, the bristles 713 can also disengage from the surface 302 of the electrode 3 along its own thickness direction, thereby removing dust from the electrode surface 302.

[0119] Optionally, the bristle thickness of the 713 brush can be 0-3mm.

[0120] During the conveying process of electrode 3, the upstream cutting end face 301 of electrode 3 (facing the traveling direction X of electrode 3) first passes through roller brush 71. Roller brush 71 can rotate in the forward direction, so that the bristles 713 brush over the upstream cutting end face 301 in the opposite direction of the traveling direction X of electrode 3. When the downstream cutting end face 301 of electrode 3 (facing away from the traveling direction X of electrode 3) passes through roller brush 71, roller brush 71 can rotate in the reverse direction, so that the bristles 713 brush over the other cutting end face 301 in the traveling direction of electrode 3.

[0121] In this embodiment, the roller brush 71 rotates bidirectionally, and the direction in which the roller brush 71 brushes over the cutting end face 301 is opposite to the orientation of the cutting end face 301. This helps to increase the contact area between the roller brush 71 and the cutting end face 301, reduce the risk that the roller brush 71 will not be able to brush the cutting end face 301, and improve the dust removal effect of the cutting end face 301.

[0122] When the portion of the electrode 3 located between the two cut end faces 301 passes through the roller brush 71, the roller brush 71 contacts the surface 302 of the electrode 3 along its own thickness direction Z to remove dust from the surface of the electrode 3. When the portion of the electrode 3 located between the two cut end faces 301 passes through the roller brush 71, the roller brush 71 can rotate against the traveling direction X of the electrode 3, or it can remain stationary.

[0123] In some embodiments, a vacuuming mechanism 72 is mounted on the side of the first conveying mechanism 91 facing the electrode 3. The vacuuming mechanism 72 has a first negative pressure chamber 721 defined inside for creating a negative pressure environment. A second recess 722 is provided on the side of the vacuuming mechanism 72 facing the first conveying mechanism 91, and the second recess 722 communicates with the first negative pressure chamber 721. A portion of a roller brush 71 is accommodated in the second recess 722, and another portion of the roller brush 71 is located outside the second recess 722 for contacting the electrode 3.

[0124] The vacuuming mechanism 72 and the first conveying mechanism 91 are spaced a certain distance apart so that the electrode 3 can pass between the vacuuming mechanism 72 and the first conveying mechanism 91.

[0125] The second recess 722 can be recessed into the surface of the dust collection mechanism 72 facing the first conveying mechanism 91.

[0126] The roller brush 71 is partially housed in the second recess 722. Most of the dust removed by the roller brush 71 can be confined within the second recess 722, which helps the dust collection mechanism 72 to more effectively adsorb the dust into the first negative pressure chamber 721. At the same time, the second recess 722 can also limit the outward diffusion of the dust removed by the roller brush 71, reducing the risk of dust adhering to other equipment and causing secondary pollution to the electrode 3.

[0127] In some embodiments, the vacuuming mechanism 72 includes a third wall 723 and two fourth walls 724. The two fourth walls 724 are arranged opposite each other along the traveling direction X of the electrode 3. The third wall 723 connects the two fourth walls 724, and the third wall 723 and the two fourth walls 724 enclose a second recess 722. The third wall 723 and each of the fourth walls 724 are provided with a first through hole 725, which connects to the first negative pressure chamber 721 and the second recess 722.

[0128] The third wall 723 is located on the side of the roller brush 71 facing away from the first conveying mechanism 91, and the two fourth walls 724 are located on both sides of the roller brush 71 in the traveling direction X of the electrode 3.

[0129] The third wall 723 and the two fourth walls 724 are each provided with a first through hole 725, which can adsorb dust in the second recess 722 from multiple different directions through the first through holes 725 on the third wall 723 and the two fourth walls 724. This reduces the risk that some dust cannot be effectively adsorbed due to the blocking or obstruction of some dust by the roller brush 71, and helps to improve the dust adsorption efficiency and adsorption effect in the second recess 722.

[0130] In some embodiments, the third dust removal device 70 includes a lever 73, which is embedded in the bristles 713 of the roller brush 71. The extension direction of the lever 73 is parallel to the rotation axis 711 of the roller brush 71, and the roller brush 71 is rotatably disposed relative to the lever 73.

[0131] Optionally, the lever 73 may be located on the side of the roller 712 facing the third wall 723 or any of the fourth walls 724. The location of the lever 73 will not affect the part of the brush 713 that is in contact with the electrode 3.

[0132] The extension direction of the lever 73 is perpendicular to the traveling direction X of the electrode 3 and the thickness direction Z of the electrode 3. When the roller brush 71 rotates around the rotating shaft 711, the lever 73 can remain stationary. The lever 73 can cause the dust hidden inside the brush bristles 713 to fall off by actuating the brush bristles 713. The fallen dust can be adsorbed into the first negative pressure chamber 721 under negative pressure, which is beneficial to the self-cleaning of the roller brush 71 and reduces the possibility of dust hidden inside the roller brush 71 contaminating the electrode 3.

[0133] Figure 9 This is a schematic diagram of the structure of the fourth dust removal device, the second conveying mechanism, and the adsorption mechanism of the electrode production equipment provided in some embodiments of this application. Figure 10 for Figure 9 The diagram shows a cross-sectional view of the fourth dust removal device, the second conveying mechanism, and the adsorption mechanism. Figure 11 for Figure 10 A magnified structural diagram of region D in the middle. Figure 12 This is a schematic diagram of the structure of the conveyor platform of the electrode production equipment provided in some embodiments of this application. Figure 13 This is a schematic diagram of the structure of the fourth dust removal device of the electrode production equipment provided in some embodiments of this application.

[0134] Reference Figure 1 , Figures 9 to 13 In some embodiments, the electrode production equipment 1 further includes a fourth dust removal device 80 located between the cutting mechanism 20 and the second dust removal device 60 along the traveling direction of the electrode 3. The fourth dust removal device 80 is configured to use ultrasonic vibration to vibrate the electrode 3 and use negative pressure to adsorb dust separated from the surface 302 of the electrode 3.

[0135] In some examples, along the travel direction of the electrode 3, the fourth dust removal device 80 may be located adjacent to and downstream of the cutting mechanism 20, with no other processes between the fourth dust removal device 80 and the cutting mechanism 20. In other examples, other processes may be provided between the fourth dust removal device 80 and the cutting mechanism 20 along the travel direction of the electrode 3.

[0136] Optionally, along the travel direction of the electrode 3, the fourth dust removal device 80 is located between the third dust removal device 70 and the second dust removal device 60.

[0137] The fourth dust removal device 80 may be located adjacent to and downstream of the third dust removal device 70. Other processes may or may not be provided between the fourth dust removal device 80 and the third dust removal device 70. Other processes may or may not be provided between the fourth dust removal device 80 and the second dust removal device 60.

[0138] The fourth dust removal device 80 generates ultrasonic waves and applies them to the electrode 3, causing the electrode 3 to vibrate slightly. The ultrasonic waves disrupt the airflow adhesion layer on the surface of the electrode 3, allowing the fine dust particles trapped within to be removed. The dust separated from the surface of the electrode 3 is then adsorbed by the fourth dust removal device 80 under negative pressure, thus achieving the purpose of dust removal from the surface 302 of the electrode 3.

[0139] In some embodiments, the electrode production apparatus 1 includes a second conveying mechanism 92 and an adsorption mechanism 93. The second conveying mechanism 92 is used to convey the electrode 3. The adsorption mechanism 93 and the fourth dust removal device 80 are disposed opposite to each other, and the second conveying mechanism 92 is configured to drive the electrode 3 through the fourth dust removal device 80 and the adsorption mechanism 93. The adsorption mechanism 93 is configured to generate a negative pressure on the side of the electrode 3 facing away from the fourth dust removal device 80, so that the electrode 3 adheres to the second conveying mechanism 92.

[0140] The direction in which the fourth dust removal device 80 and the adsorption mechanism 93 are arranged relative to each other (that is, the arrangement direction of the two) can be perpendicular to the traveling direction X of the electrode 3. The fourth dust removal device 80 and the adsorption mechanism 93 can be respectively opposite to the two surfaces 302 of the electrode 3.

[0141] When electrode 3 passes between the fourth dust removal device 80 and the adsorption mechanism 93, the negative pressure generated by the fourth dust removal device 80 also has a certain adsorption effect on electrode 3. The adsorption mechanism 93 is arranged opposite to the fourth dust removal device 80. The adsorption mechanism 93 can generate negative pressure on the side of electrode 3 facing away from the fourth dust removal device 80. The adsorption effects of the fourth dust removal device 80 and the adsorption mechanism 93 on electrode 3 are in opposite directions. The negative pressure generated by the adsorption mechanism 93 can at least partially overcome the adsorption effect of the fourth dust removal device 80 on electrode 3 when adsorbing dust, so that electrode 3 adheres to the second conveying mechanism 92 and moves synchronously with the second conveying mechanism 92. This reduces the risk of electrode 3 detaching from the second conveying mechanism 92 or being adsorbed to the fourth dust removal device 80, which is conducive to the smooth movement of electrode 3, reduces damage to electrode 3, and improves the production yield of electrode 3.

[0142] The adsorption mechanism 93 is arranged opposite to the fourth dust removal device 80. When the electrode 3 passes between the adsorption mechanism 93 and the fourth dust removal device 80, the electrode 3 can block the adsorption effect of the adsorption mechanism 93 on the side of the electrode 3 facing the fourth dust removal device 80, which helps to reduce the adverse effects of the negative pressure generated by the adsorption mechanism 93 on the adsorption of dust by the fourth dust removal device 80.

[0143] In some embodiments, the second conveying mechanism 92 includes a conveyor belt 921 for carrying the electrode 3 and moving the electrode 3. The conveyor belt 921 is provided with a plurality of second through holes 9211. The second through holes 9211 of the portion of the conveyor belt 921 located between the adsorption mechanism 93 and the fourth dust removal device 80 are connected to the adsorption mechanism 93.

[0144] The second conveying mechanism 92 may further include at least two drive wheels 922, and the conveyor belt 921 is wound around the at least two drive wheels 922. The drive unit of the second conveying mechanism 92 is connected to at least one drive wheel 922 to drive the at least one drive wheel 922 to rotate, thereby causing the conveyor belt 921 to rotate around the at least two drive wheels 922.

[0145] Multiple second through holes 9211 are distributed throughout the conveyor belt 921. The distribution of the multiple second through holes 9211 can be uniform or non-uniform.

[0146] Along the traveling direction X of the electrode 3, each section of the conveyor belt 921 is provided with a second through hole 9211.

[0147] During the conveying process of electrode 3, the conveyor belt 921 moves continuously, and the portion of the conveyor belt 921 located between the adsorption mechanism 93 and the fourth dust removal device 80 is dynamically changing. The portion of the conveyor belt 921 located between the adsorption mechanism 93 and the fourth dust removal device 80 always has a second through hole 9211 to facilitate communication with the adsorption mechanism 93.

[0148] The second through hole 9211 of the conveyor belt 921, except for the part located between the adsorption mechanism 93 and the fourth dust removal device 80, may or may not be connected to the adsorption mechanism 93.

[0149] The second through hole 9211 can be circular, square, triangular, or other suitable shapes.

[0150] The adsorption mechanism 93 is connected to the second through hole 9211 on the conveyor belt 921. The negative pressure generated by the adsorption mechanism 93 can be applied to the electrode 3 through the second through hole 9211, which is beneficial for adsorbing the electrode 3 and can also increase the area of ​​the conveyor belt 921 used for attaching the electrode 3, thereby improving the load-bearing stability of the second conveyor mechanism 92 on the electrode 3.

[0151] In some embodiments, the conveyor belt 921 includes a conveying section 9212 for attaching the electrode sheet 3, with the fourth dust removal device 80 and the adsorption mechanism 93 located on opposite sides of the conveying section 9212. The second conveying mechanism 92 defines a second negative pressure chamber 923 for creating a negative pressure environment. The second negative pressure chamber 923 is located on the side of the conveying section 9212 facing away from the fourth dust removal device 80, and the second negative pressure chamber 923 communicates with a second through hole 9211 on the conveying section 9212.

[0152] The conveyor section 9212 refers to the section of conveyor belt 921 facing the electrode 3 and the fourth dust removal device 80.

[0153] Optionally, the conveyor belt 921 may include two straight sections and two curved sections. The two straight sections are arranged opposite each other along the arrangement direction of the fourth dust removal device 80 and the adsorption mechanism 93, and the curved sections are connected between the ends of the two straight sections. The conveyor section 9212 refers to one of the straight sections used for attaching the electrode sheet 3.

[0154] During the transmission of electrode 3, the conveyor belt 921 moves continuously, and the transmission section 9212 is not a fixed section on the conveyor belt 921, but a dynamically changing section.

[0155] The second negative pressure chamber 923 and the adsorption mechanism 93 are both located on the side of the conveying section 9212 facing away from the fourth dust removal device 80. The adsorption mechanism 93 can be connected to the second negative pressure chamber 923 or fluidly isolated from the second negative pressure chamber 923.

[0156] The second conveying mechanism 92 may further include a conveying platform 924, through which the conveying section 9212 passes along the traveling direction X of the electrode 3. A second negative pressure cavity 923 is formed inside the conveying platform 924 and is open to the side facing the conveying section 9212 to communicate with the second through hole 9211 on the conveying section 9212.

[0157] The conveying platform 924 is also provided with a connecting port 9241, which connects to the second negative pressure chamber 923. The conveying platform 924 may include two support beams 9242 arranged opposite each other, the arrangement direction of the two support beams 9242 being perpendicular to the traveling direction X of the electrode 3, and each support beam extending along the traveling direction X of the electrode 3. The connecting port 9241 may be provided on the support beam 9242.

[0158] Along the arrangement direction of the fourth dust removal device 80 and the adsorption mechanism 93, the projection of the second negative pressure chamber 923 is located within the projection of the conveying section 9212, and the conveying section 9212 covers the second negative pressure chamber 923.

[0159] The second negative pressure chamber 923 is connected to the second through hole 9211 on the conveying section 9212. The electrode 3 located at any position in the conveying section 9212 can receive the negative pressure in the second negative pressure chamber 923 through the second through hole 9211. During the process of conveying the electrode 3 by the adsorption mechanism 93, the electrode 3 can always be adsorbed on the conveyor belt 921, so that the electrode 3 and the conveyor belt 921 move synchronously, which is beneficial to improving the conveying stability of the electrode 3.

[0160] Both the second conveying mechanism 92 and the adsorption mechanism 93 can adsorb the electrode 3. The adsorption mechanism 93 can provide additional negative pressure at the position opposite to the fourth dust removal device 80 to resist the adsorption effect applied to the electrode 3 by the fourth dust removal device 80. As a result, the negative pressure in the second negative pressure chamber 923 does not need to be set too large, which helps to reduce energy consumption, reduce the risk of damaging the electrode 3 due to excessive negative pressure in the second negative pressure chamber 923, and improve the production yield of the electrode 3.

[0161] In some embodiments, at least a portion of the adsorption mechanism 93 is disposed within the second negative pressure chamber 923.

[0162] The adsorption mechanism 93 can be positioned as a whole between two straight sections of the conveyor belt 921.

[0163] The adsorption mechanism 93 may be entirely located within the second negative pressure chamber 923, or only a portion of the adsorption mechanism 93 may be located within the second negative pressure chamber 923. For example, the portion of the adsorption mechanism 93 closest to the fourth dust removal device 80 is located within the second negative pressure chamber 923, while the portion of the adsorption mechanism 93 furthest from the fourth dust removal device 80 is located outside the second negative pressure chamber 923.

[0164] The adsorption mechanism 93 is at least partially located within the second negative pressure chamber 923. The adsorption mechanism 93 and the second negative pressure chamber 923 can share at least a portion of the space, which is beneficial to improving the compactness of the structural layout and saving space.

[0165] In some embodiments, the fourth dust removal device 80 includes a positive pressure section 81, a negative pressure section 82, and an ultrasonic generator 83. The positive pressure section 81 and the negative pressure section 82 are arranged along the traveling direction X of the electrode 3. The positive pressure section 81 defines a positive pressure chamber 811 for forming a positive pressure environment. The ultrasonic generator 83 is disposed in the positive pressure chamber 811. An air outlet channel 812 is provided on the side of the positive pressure section 81 facing the second conveying mechanism 92, and the air outlet channel 812 communicates with the positive pressure chamber 811. The negative pressure section 82 defines a third negative pressure chamber 821 for forming a negative pressure environment. A dust suction channel 822 is provided on the side of the negative pressure section 82 facing the second conveying mechanism 92, and the dust suction channel 822 communicates with the third negative pressure chamber 821.

[0166] There can be one or more positive pressure sections 81.

[0167] There can be one or more negative pressure units 82.

[0168] Along the traveling direction X of the electrode 3, the positive pressure part 81 can be located upstream of the negative pressure part 82 or downstream of the negative pressure part 82.

[0169] A positive pressure environment can be created within the positive pressure chamber 811 by supplying compressed air into it. Optionally, the absolute pressure within the positive pressure chamber 811 can be greater than or equal to 3 kPa.

[0170] The airflow in the positive pressure chamber 811 can be blown toward the electrode 3 through the air outlet channel 812. The ultrasonic waves generated by the ultrasonic generator 83 act on the electrode 3 with the airflow, thereby vibrating the electrode 3.

[0171] A negative pressure environment can be created in the second negative pressure chamber 923 by drawing airflow from the second negative pressure chamber 923, thereby adsorbing the dust separated from the surface of the electrode 3.

[0172] The positive pressure section 81 and the negative pressure section 82 are arranged along the traveling direction X of the electrode 3. The air outlet channel 812 and the dust suction channel 822 are both set towards the second conveying mechanism 92, which can reduce the positive and negative pressure interference of the fourth dust removal device 80 itself and help improve the dust separation effect and dust adsorption effect on the surface of the electrode 3.

[0173] In some embodiments, the exhaust channel 812 extends along the arrangement direction of the adsorption mechanism 93 and the fourth dust removal device 80, and the cross-sectional area of ​​the exhaust channel 812 gradually decreases along the direction from the fourth dust removal device 80 to the adsorption mechanism 93.

[0174] The air outlet channel 812 extends along the arrangement direction of the adsorption mechanism 93 and the fourth dust removal device 80, which can reduce the airflow reversal in the air outlet channel 812, reduce the airflow resistance, and improve the effect of the vibrating electrode 3.

[0175] The cross-section of the air outlet channel 812, taken perpendicular to the width direction of the conveyor belt 921, can be an inverted trapezoid. The width direction of the conveyor belt 921, the travel direction X of the electrode 3, and the arrangement directions of the adsorption mechanism 93 and the fourth dust removal device 80 are all perpendicular to each other.

[0176] Along the direction of the fourth dust removal device 80 toward the adsorption mechanism 93, the cross-sectional area of ​​the air outlet channel 812 gradually decreases, which can accelerate the airflow velocity in the air outlet channel 812, increase the force of the airflow acting on the electrode 3, increase the vibration amplitude of the electrode 3, and help to more effectively destroy the airflow adhesion layer on the surface of the electrode 3, thereby more effectively peeling off the dust on the surface of the electrode 3.

[0177] In some embodiments, the suction channel 822 extends along the arrangement direction of the adsorption mechanism 93 and the fourth dust removal device 80, and the cross-sectional area of ​​the suction channel 822 gradually increases along the direction from the fourth dust removal device 80 to the adsorption mechanism 93.

[0178] The dust suction channel 822 extends along the arrangement direction of the adsorption mechanism 93 and the fourth dust removal device 80, which can reduce the obstruction effect on dust and improve the dust adsorption efficiency.

[0179] The cross-section of the air outlet channel 812 along the width direction perpendicular to the conveyor belt 921 can be trapezoidal.

[0180] Along the direction from the fourth dust removal device 80 to the adsorption mechanism 93, the cross-sectional area of ​​the dust suction channel 822 gradually increases, which can accelerate the airflow velocity within the dust suction channel 822 and improve the dust adsorption efficiency. Furthermore, the end of the dust suction channel 822 near the electrode 3 has a relatively large opening, which helps to expand the range of dust that the dust suction channel 822 can adsorb, increase the amount of dust adsorbed, reduce the possibility of dust falling back onto the surface of the electrode 3 after being raised, and improve the dust removal effect. The end of the dust suction channel 822 near the second negative pressure chamber 923 has a relatively small opening, so when the fourth dust removal device 80 is not working, dust in the second negative pressure chamber 923 is less likely to fall through the dust suction channel 822.

[0181] In some embodiments, the air outlet channel 812 is a strip channel that extends continuously along the first direction Y, and the dust suction channel 822 is a strip channel that extends continuously along the first direction Y. The first direction Y, the arrangement direction of the fourth dust removal device 80 and the adsorption mechanism 93 (that is, the thickness direction Z of the electrode 3), and the traveling direction X of the electrode 3 are perpendicular to each other.

[0182] In some embodiments, there are two negative pressure sections 82, with a positive pressure section 81 located between the two negative pressure sections 82 along the traveling direction X of the electrode 3.

[0183] The two negative pressure sections 82 can be arranged symmetrically or asymmetrically.

[0184] Along the traveling direction X of the electrode 3, the distance between the dust suction channel 822 and the air outlet channel 812 of the two negative pressure sections 82 can be the same or different.

[0185] Optionally, the two negative pressure sections 82 are symmetrically arranged, and the distance between the dust suction channel 822 and the air outlet channel 812 of the two negative pressure sections 82 is the same.

[0186] When the electrode 3 is subjected to the ultrasonic airflow output from the positive pressure section 81, it vibrates, and the dust separated from the surface of the electrode 3 is thrown up in all directions. The two negative pressure sections 82 located on both sides of the positive pressure section 81 can adsorb the dust thrown up from the surface of the electrode 3 in all directions, which is conducive to more comprehensive adsorption of the thrown dust and improves the dust removal effect of the electrode 3.

[0187] In some embodiments, the air outlet channel 812 is located at the center of the positive pressure section 81 in the travel direction X of the electrode 3. The dust suction channel 822 is offset from the center of the negative pressure section 82 in the travel direction X of the electrode 3 and is close to the positive pressure section 81.

[0188] The exhaust channel 812 is a narrow channel with a limited size along the travel direction X of the electrode 3. Under the pressure and ultrasonic action output by the exhaust channel 812, the area on the surface of the electrode 3 opposite to the exhaust channel 812 has relatively more dust removed, while other areas on the surface of the electrode 3 have relatively less dust removed.

[0189] In this embodiment, the dust suction channel 822 is positioned close to the positive pressure section 81, which facilitates the adsorption of more dust separated and lifted from the surface of the electrode 3, thereby improving the dust adsorption effect. Furthermore, when the fourth dust removal device 80 is not in operation, the dust in the second negative pressure chamber 923 is less likely to fall through the dust suction channel 822. Simultaneously, the size of the negative pressure section 82 along the traveling direction X of the electrode 3 can be appropriately increased to improve the dust holding capacity of the negative pressure section 82.

[0190] In some embodiments, the adsorption mechanism 93 has a fourth negative pressure chamber 931 defined inside for forming a negative pressure environment. The adsorption mechanism 93 has a first opening 932 on the side facing the fourth dust removal device 80, and the first opening 932 communicates with the fourth negative pressure chamber 931. The dust suction channel 822 forms a second opening 8221 near the end of the adsorption mechanism 93. Along the arrangement direction of the fourth dust removal device 80 and the adsorption mechanism 93, the projections of the first opening 932 and the second opening 8221 at least partially overlap.

[0191] Optionally, along the arrangement direction of the fourth dust removal device 80 and the adsorption mechanism 93, the projection of the second opening 8221 is located within the projection of the first opening 932.

[0192] The first opening 932 is connected to the second through hole 9211 on the conveyor belt 921. The fourth negative pressure chamber 931 can adsorb the electrode 3 through the first opening 932 and the second through hole 9211.

[0193] In some examples, the first opening 932 may extend continuously along the travel direction X of the electrode 3. In other examples, the first opening 932 may include a plurality of sub-openings spaced apart along the travel direction X of the electrode 3.

[0194] In this embodiment, the projections of the first opening 932 and the second opening 8221 are set to at least partially overlap. At least a portion of the first opening 932 and at least a portion of the second opening 8221 are arranged opposite each other in the forward direction along the arrangement direction of the fourth dust removal device 80 and the adsorption mechanism 93. The adsorption effect of the second negative pressure chamber 923 on the electrode 3 and the adsorption effect of the fourth negative pressure chamber 931 on the electrode 3 can at least partially cancel each other out, which can reduce the adverse effects on the electrode 3 during the adsorption of dust by the fourth dust removal device 80 and improve the stability of the electrode 3 conveying.

[0195] In some embodiments, the adsorption mechanism 93 has a fourth negative pressure chamber 931 defined inside for forming a negative pressure environment. The adsorption mechanism 93 has a first opening 932 on the side facing the fourth dust removal device 80, and the first opening 932 communicates with the fourth negative pressure chamber 931. The exhaust channel 812 forms a third opening 8121 near the end of the adsorption mechanism 93. Along the arrangement direction of the fourth dust removal device 80 and the adsorption mechanism 93, the projections of the first opening 932 and the third opening 8121 are separate.

[0196] The positive pressure chamber 811 delivers airflow to the electrode 3 through the third opening 8121, and the fourth negative pressure chamber 931 applies negative pressure to the electrode 3 through the first opening 932. The forces exerted on the electrode 3 by the positive pressure chamber 811 and the fourth negative pressure chamber 931 are in the same direction.

[0197] In this embodiment, the projections of the first opening 932 and the third opening 8121 are separated. The positive pressure cavity 811 and the fourth negative pressure cavity 931 can act on different areas of the electrode 3 respectively, thereby improving the superposition of the forces exerted by the positive pressure cavity 811 and the fourth negative pressure cavity 931 on the same area of ​​the electrode 3. This helps to reduce the stress on the electrode 3, reduce the risk of damage to the electrode 3, and improve the production yield of the electrode 3.

[0198] In some embodiments, the conveyor belt 921 includes a conveying section 9212 for carrying the electrode 3, and the conveying section 9212 has a conveying surface 9212a for attaching the electrode 3. There are two second conveying mechanisms 92, which are arranged along the traveling direction X of the electrode 3. Along the arrangement direction of the fourth dust removal device 80 and the adsorption mechanism 93, a fourth dust removal device 80 and an adsorption mechanism 93 are respectively provided on both sides of the conveying section 9212 of each second conveying mechanism 92, and the conveying surfaces 9212a of the two second conveying mechanisms 92 face opposite directions.

[0199] The transmission section 9212 has two surfaces arranged opposite to each other, one surface facing the electrode 3 and capable of direct contact with the electrode 3, and the other surface facing away from the electrode 3. The transmission surface 9212a is the surface of the transmission section 9212 facing the electrode 3 and capable of contacting the electrode 3.

[0200] The fourth dust removal device 80 is located on the side of the corresponding second conveying mechanism 9212a facing the electrode 3, and the adsorption mechanism 93 is located on the side of the corresponding second conveying mechanism 9212a facing away from the electrode 3.

[0201] The two second conveying mechanisms 92 can sequentially convey the electrode 3 along the traveling direction X of the electrode 3. The electrode 3 does not flip over when switching positions between the two second conveying mechanisms 92.

[0202] The conveying surfaces 9212a of the two second conveying mechanisms 92 face opposite directions, and the adsorption forces applied by the two second conveying mechanisms 92 to the electrode 3 are opposite. Exemplarily, the second conveying mechanism 92 can convey the electrode 3 in a horizontal direction, with the conveying surface 9212a of one second conveying mechanism 92 facing upwards, and the electrode 3 adsorbed and supported above the second conveying mechanism 92; and the conveying surface 9212a of the other second conveying mechanism 92 facing downwards, and the electrode 3 adsorbed and suspended below the second conveying mechanism 92.

[0203] The fourth dust removal device 80 is arranged opposite to the conveying surface 9212a of the second conveying mechanism 92, and the two fourth dust removal devices 80 are arranged in opposite directions, as are the two adsorption mechanisms 93. The second conveying mechanism 92, and the fourth dust removal devices 80 and adsorption mechanisms 93 located on both sides of the conveying surface 9212a of the second conveying mechanism 92, can form an electrode dust removal unit. The two electrode dust removal units can remove dust from different surfaces of the electrode 3 respectively, which is beneficial to improving the dust removal effect of the electrode 3.

[0204] This embodiment of the application, by setting two electrode dust removal units arranged along the traveling direction X of the electrode 3, can perform double-sided dust removal on the electrode 3. Furthermore, the fourth dust removal device 80 of each electrode dust removal unit is directly opposite the surface of the electrode 3 to be dusted, and there is no obstruction structure between the fourth dust removal device 80 and the surface of the electrode 3 to be dusted. The surface of the electrode 3 to be dusted can be completely open to the fourth dust removal device 80, which is beneficial to improving the dust removal effect. Simultaneously, in one electrode dust removal unit, the surface of the electrode 3 facing away from the fourth dust removal device 80 does not need dust removal; only a second through hole 9211 for airflow is needed on the conveyor belt 921. This increases the area of ​​the conveyor belt 921 used to support the electrode 3, reducing the risk of excessive stress on some areas of the electrode 3, which could easily damage the electrode 3.

[0205] In some embodiments, the fourth dust removal device 80 and the adsorption mechanism 93 are arranged parallel to the vertical direction. Along the traveling direction X of the electrode 3, the conveying surface 9212a of the upstream second conveying mechanism 92 faces upward, and the conveying surface 9212a of the downstream second conveying mechanism 92 faces downward.

[0206] The conveying surface 9212a of the second conveying mechanism 92 located upstream faces upward, the fourth dust removal device 80 corresponding to the second conveying mechanism 92 is located above the conveying surface 9212a, and the adsorption mechanism 93 corresponding to the second conveying mechanism 92 is located below the conveying surface 9212a.

[0207] The conveying surface 9212a of the downstream second conveying mechanism 92 faces downward, the fourth dust removal device 80 corresponding to the second conveying mechanism 92 is located below the conveying surface 9212a, and the adsorption mechanism 93 corresponding to the second conveying mechanism 92 is located above the conveying surface 9212a.

[0208] The upstream second conveying mechanism 92 is closer to the cutting mechanism 20 than the downstream second conveying mechanism 92. After the cutting mechanism 20 cuts the electrode strip into electrode 3, it preferably adsorbs and supports the electrode 3 from below to reduce the possibility of the electrode 3 shifting or falling off under its own gravity and inertia.

[0209] Therefore, in this embodiment, the conveying surface 9212a of the upstream second conveying mechanism 92 is set to face upward, and the conveying surface 9212a of the downstream second conveying mechanism 92 is set to face downward. The upper surface of the electrode 3 is dusted first, and then the lower surface of the electrode 3 is dusted. This conforms to the process settings of the traditional electrode production equipment 1, which helps to reduce the possibility of the electrode 3 shifting or falling off under its own gravity and inertia.

[0210] In some embodiments, the conveying surfaces 9212a of the two second conveying mechanisms 92 are arranged flush with each other along the arrangement direction of the fourth dust removal device 80 and the adsorption mechanism 93.

[0211] When the electrode 3 switches positions between the two second conveying mechanisms 92, the displacement of the electrode 3 in the arrangement direction of the fourth dust removal device 80 and the adsorption mechanism 93 can be reduced, the bending phenomenon of the electrode 3 can be reduced, and the risk of the electrode 3 falling off can be reduced.

[0212] In some embodiments, the electrode production equipment 1 may further include a pressure generating mechanism for providing positive and / or negative pressure to the first dust removal device 50, the second dust removal device 60, the third dust removal device 70 and the fourth dust removal device 80.

[0213] The electrode production equipment 1 provided in this application embodiment includes an electrode unwinding mechanism 10, a cutting mechanism 20, a correction mechanism 30, a stacking mechanism 40, a first dust removal device 50, a second dust removal device 60, a third dust removal device 70, and a fourth dust removal device 80. The electrode unwinding mechanism 10 is used to unwind electrode strips. The cutting mechanism 20 is used to cut the electrode strips and form electrode sheets 3. The correction mechanism 30 is used to correct the deviation of the electrode sheets 3. The stacking mechanism 40 is used to stack multiple electrode sheets 3. Along the traveling direction of the electrode sheets 3, the first dust removal device 50 is disposed between the correction mechanism 30 and the stacking mechanism 40. The first dust removal device 50 includes a drive mechanism 51 and two air knives 52. The two air knives 52 are spaced apart along a direction perpendicular to the cutting end face 301 of the electrode sheet 3. The drive mechanism 51 is connected to the two air knives 52 and is configured to drive the two air knives 52 to move towards each other or away from each other. The second dust removal device 60 is configured to remove dust from the surface 302 of the electrode 3 along its thickness direction Z using negative pressure. The second dust removal device 60 is positioned between the correction mechanism 30 and the cutting mechanism 20 along the traveling direction of the electrode 3. A third dust removal device 70 is positioned between the cutting mechanism 20 and the second dust removal device 60 along the traveling direction of the electrode 3. The third dust removal device 70 is configured to remove dust from at least the cut end face 301 of the electrode 3. The third dust removal device 70 includes a roller brush 71 and a suction mechanism 72. The roller brush 71 is configured to be rotatable in both directions, with its rotation axis 711 perpendicular to both the traveling direction X and the thickness direction Z of the electrode 3. The suction mechanism 72 is configured to use negative pressure to absorb at least a portion of the dust removed by the roller brush 71. Along the traveling direction of the electrode 3, the fourth dust removal device 80 is located between the third dust removal device 70 and the second dust removal device 60. The fourth dust removal device 80 is configured to use ultrasonic vibration of the electrode 3 and use negative pressure to adsorb the dust separated from the surface 302 of the electrode 3.

[0214] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A pole piece production apparatus characterized by comprising: include: Electrode unwinding mechanism, used for unwinding electrode strips; A cutting mechanism for cutting the electrode strip and forming an electrode; A correction mechanism is used to correct the deviation of the electrode sheet; A stacking mechanism for stacking multiple of the aforementioned electrode sheets; The first dust removal device is used to remove dust from the cut end face of the electrode sheet. Along the traveling direction of the electrode sheet, the first dust removal device is located between the correction mechanism and the stacking mechanism. The second dust removal device is used to remove dust from the surface of the electrode sheet along its own thickness direction. Along the traveling direction of the electrode sheet, the second dust removal device is located between the correction mechanism and the cutting mechanism.

2. The electrode production equipment according to claim 1, characterized in that, The first dust removal device includes a drive mechanism and two air knives. The two air knives are spaced apart along a direction perpendicular to the cutting end face of the electrode sheet. The drive mechanism is connected to the two air knives and is configured to drive the two air knives to move towards each other or away from each other.

3. The electrode production equipment according to claim 2, characterized in that, Each of the air knives has a first recess on the side facing the other air knife. The air knife includes a first air blowing port and a first air suction port. The first air blowing port and the first air suction port are both connected to the first recess. The air knife is configured to blow airflow into the first recess through the first air blowing port and adsorb dust in the first recess through the first air suction port. When the first dust removal device is in the dust removal state, the driving mechanism drives the two air knives to move towards each other so that the end of the electrode with the cutting end face is accommodated in the first recess.

4. The electrode production equipment according to claim 3, characterized in that, The air knife includes a first wall and two second walls, the two second walls are arranged opposite to each other, the first wall is connected between the two second walls, and the first wall and the two second walls enclose and form the first recess. The first wall faces the cut end face of the electrode sheet, the first air blowing port is provided on the first wall, and each of the second walls is provided with the first air suction port.

5. The electrode production equipment according to any one of claims 1-4, characterized in that, The second dust removal device is configured to use negative pressure to adsorb dust from the surface of the electrode.

6. The electrode production equipment according to claim 5, characterized in that, The second dust removal device includes a second air blowing port and a second air suction port. The second dust removal device is configured to blow airflow toward the surface of the electrode sheet along its own thickness direction through the second air blowing port and to adsorb dust separated from the surface of the electrode sheet through the second air suction port.

7. The electrode production equipment according to claim 6, characterized in that, The second air outlet extends straight along the first direction, and the second air inlet has a first end and a second end opposite to each other along the first direction. The second air inlet extends or bends from the first end to the second end. The first direction is perpendicular to the traveling direction of the electrode and the thickness direction of the electrode.

8. The electrode production equipment according to any one of claims 1-7, characterized in that, The electrode production equipment includes a third dust removal device located between the cutting mechanism and the second dust removal device along the traveling direction of the electrode. The third dust removal device is configured to remove dust from at least the cut end face of the electrode.

9. The electrode production equipment according to claim 8, characterized in that, The electrode production equipment includes a first conveying mechanism, which is used to convey the electrode in a direction perpendicular to the cutting end face of the electrode. The third dust removal device includes a roller brush and a dust collection mechanism. The roller brush is located on the side of the first conveying mechanism facing the electrode sheet. The roller brush is configured to be rotatable in both directions, and the rotation axis of the roller brush is perpendicular to the traveling direction of the electrode sheet and the thickness direction of the electrode sheet. The dust collection mechanism is configured to use negative pressure to adsorb at least a portion of the dust removed by the roller brush.

10. The electrode production equipment according to claim 9, characterized in that, The dust collection mechanism is mounted on the side of the first conveying mechanism facing the electrode plate. The dust collection mechanism has a first negative pressure chamber inside for forming a negative pressure environment. The side of the dust collection mechanism facing the first conveying mechanism has a second recess, which communicates with the first negative pressure chamber. A portion of the roller brush is housed in the second recess, and another portion of the roller brush is located outside the second recess for contacting the electrode.

11. The electrode production equipment according to claim 10, characterized in that, The dust collection mechanism includes a third wall and two fourth walls. The two fourth walls are arranged opposite each other along the traveling direction of the electrode. The third wall connects the two fourth walls, and the third wall and the two fourth walls enclose and form the second recess. The third wall and each of the fourth walls are provided with a first through hole, which connects the first negative pressure cavity and the second recess.

12. The electrode production equipment according to any one of claims 9-11, characterized in that, The third dust removal device includes a lever, which is embedded in the bristles of the roller brush. The extension direction of the lever is parallel to the rotation axis of the roller brush, and the roller brush is rotatably configured relative to the lever.

13. The electrode production equipment according to any one of claims 1-12, characterized in that, The electrode production equipment further includes a fourth dust removal device located between the cutting mechanism and the second dust removal device along the traveling direction of the electrode. The fourth dust removal device is configured to use ultrasonic vibration to vibrate the electrode and use negative pressure to adsorb dust separated from the surface of the electrode.

14. The electrode production equipment according to claim 13, characterized in that, The electrode production equipment includes a second conveying mechanism and an adsorption mechanism. The second conveying mechanism is used to convey the electrode. The adsorption mechanism and the fourth dust removal device are arranged opposite to each other. The second conveying mechanism is configured to drive the electrode through the fourth dust removal device and the adsorption mechanism. The adsorption mechanism is configured to generate a negative pressure on the side of the electrode facing away from the fourth dust removal device, so that the electrode adheres to the second conveying mechanism.

15. The electrode production equipment according to claim 14, characterized in that, The second conveying mechanism includes a conveyor belt for carrying the electrode and moving the electrode, and the conveyor belt is provided with a plurality of second through holes; The second through hole of the portion of the conveyor belt located between the adsorption mechanism and the fourth dust removal device is connected to the adsorption mechanism.

16. The electrode production equipment according to claim 15, characterized in that, The conveyor belt includes a conveying section for attaching the electrode sheet, and the fourth dust removal device and the adsorption mechanism are located on both sides of the conveying section, respectively. The second conveying mechanism defines a second negative pressure chamber for creating a negative pressure environment. The second negative pressure chamber is located on the side of the conveying section opposite to the fourth dust removal device, and the second negative pressure chamber is connected to the second through hole on the conveying section.

17. The electrode production equipment according to any one of claims 14-16, characterized in that, The fourth dust removal device includes a positive pressure section, a negative pressure section, and an ultrasonic generator, wherein the positive pressure section and the negative pressure section are arranged along the traveling direction of the electrode sheet; The positive pressure section defines a positive pressure cavity for creating a positive pressure environment. The ultrasonic generator is disposed in the positive pressure cavity. The positive pressure section has an air outlet channel on the side facing the second transmission mechanism, and the air outlet channel is connected to the positive pressure cavity. The negative pressure section includes a third negative pressure chamber for creating a negative pressure environment. The side of the negative pressure section facing the second conveying mechanism is provided with a dust suction channel, which is connected to the third negative pressure chamber.

18. The electrode production equipment according to claim 17, characterized in that, The adsorption mechanism has a fourth negative pressure chamber defined inside for forming a negative pressure environment. The adsorption mechanism has a first opening on the side facing the fourth dust removal device, and the first opening communicates with the fourth negative pressure chamber. The dust suction channel forms a second opening near the end of the adsorption mechanism. Along the arrangement direction of the fourth dust removal device and the adsorption mechanism, the projections of the first opening and the second opening at least partially overlap.

19. The electrode production equipment according to claim 17 or 18, characterized in that, The adsorption mechanism has a fourth negative pressure chamber defined inside for forming a negative pressure environment. The adsorption mechanism has a first opening on the side facing the fourth dust removal device, and the first opening communicates with the fourth negative pressure chamber. The exhaust channel forms a third opening near the end of the adsorption mechanism. Along the arrangement direction of the fourth dust removal device and the adsorption mechanism, the projections of the first opening and the third opening are separate.

20. The electrode production equipment according to any one of claims 14-19, characterized in that, The second conveying mechanism includes a conveyor belt, the conveyor belt including a conveying section for carrying the electrode, the conveying section having a conveying surface for attaching the electrode; There are two second conveying mechanisms, which are arranged along the traveling direction of the electrode and along the arrangement direction of the fourth dust removal device and the adsorption mechanism. Each second conveying mechanism has a fourth dust removal device and an adsorption mechanism on both sides of its conveying section. The conveying surfaces of the two second conveying mechanisms face opposite directions.

Images