Pole piece processing device

Abstract

The utility model relates to the technical field of battery production, and discloses a pole piece processing device which comprises a pole piece cutting mechanism, a pole piece conveying mechanism and an adsorption mechanism, and the pole piece conveying mechanism is used for conveying pole pieces; the pole piece cutting mechanism is used for cutting a pole piece to form a pole lug, the adsorption mechanism comprises a plurality of adsorption pieces arranged in the pole piece tape running direction, each adsorption piece is provided with an adsorption surface, the adsorption surfaces are used for adsorbing waste generated by cutting, and the adsorption surfaces of the adsorption pieces are parallel to the pole piece tape running direction or form acute included angles with the pole piece tape running direction; and the angle between the extension direction of the adsorption surface of each adsorption piece and the pole piece tape running direction is gradually increased along the pole piece tape running direction. By means of the waste material conveying device, waste materials can be gradually away from the pole pieces along with angle changes in the conveying process, progressive separation is achieved, the smoothness and efficiency of separation are improved, mutual interference of the waste materials and the pole lugs in the conveying process is effectively avoided, and the problems that the pole lugs are folded and damaged and the like are solved. The continuity of a waste discharge process is favorably improved, and the production quality and the production efficiency of the pole piece are improved.

Description

Technical Field

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

[0002] New energy batteries are being used more and more widely in daily life and industry. For example, new energy vehicles equipped with batteries are already widely used. In addition, batteries are being used more and more in the field of energy storage.

[0003] In battery production, electrode sheets need to be processed and cut to form tabs. During tab forming, the cut tabs and the waste generated during cutting need to be separated. In related technologies, there is a problem that effective waste removal cannot be achieved in the processing of short-pitch tabs. Therefore, how to improve the efficiency of waste separation in electrode processing is one of the research topics in the industry. Utility Model Content

[0004] To solve the above-mentioned technical problems, this application provides an electrode processing apparatus.

[0005] This application is achieved through the following technical solution.

[0006] This application provides an electrode processing apparatus, which includes an electrode cutting mechanism, an electrode conveying mechanism, and an adsorption mechanism. The electrode conveying mechanism is used to transport electrodes; the electrode cutting mechanism is used to cut electrodes to form electrode tabs; the adsorption mechanism includes a plurality of adsorption elements arranged along the electrode travel direction, each adsorption element having an adsorption surface for adsorbing waste generated during cutting. The adsorption surface of each adsorption element is parallel to or forms an acute angle with the electrode travel direction; along the electrode travel direction, the angle between the extension direction of the adsorption surface of each adsorption element and the electrode travel direction gradually increases.

[0007] In the technical solution of this application embodiment, since the adsorption mechanism includes multiple adsorption elements arranged along the electrode belt direction, and the adsorption surface of each adsorption element is parallel to or forms an acute angle with the electrode belt direction, and the angle between the extension direction of the adsorption surface of each adsorption element and the electrode belt direction gradually increases, the waste material can be adsorbed by the negative pressure generated by the adsorption surface, preventing the waste material from randomly scattering or sticking to the electrode tabs after cutting, thereby reducing the risk of interference between the waste material and the electrode tabs and improving the electrode tab forming quality. Furthermore, the waste material is subjected to a gradually changing guiding force during transmission, and can gradually move away from the electrode movement trajectory as the angle changes, achieving gradual separation. This avoids waste material jamming or electrode tab folding or even damage due to sudden angle changes, improving the smoothness and efficiency of separation, which is beneficial to improving the continuity of the waste discharge process, and ultimately improving the production quality and efficiency of the electrode.

[0008] In some embodiments, the adsorption surface is disposed on the side of the adsorption member facing the electrode, and along the thickness direction of the electrode, the electrode cutting mechanism and the adsorption mechanism are disposed on opposite sides of the electrode.

[0009] In the technical solution of this application embodiment, since the adsorption surface is located on the side of the adsorption element facing the electrode, and the electrode cutting mechanism and the adsorption mechanism are located on opposite sides of the electrode, the cutting mechanism can cut from one side, while the adsorption mechanism directly adsorbs waste from the other side, preventing interference between the positions and achieving simultaneous cutting and waste removal, thus improving processing efficiency. Furthermore, the adsorption force of the adsorption surface can directly act on the waste generated during cutting, more firmly adsorbing the waste and preventing it from falling off or shifting during transport, ensuring separation effectiveness.

[0010] In some embodiments, the adsorption mechanism includes a first adsorption element and a second adsorption element; the first adsorption element has a first adsorption surface, which is parallel to the electrode travel direction; the second adsorption element has a second adsorption surface, and the angle between the second adsorption surface and the electrode travel direction is not less than 5°.

[0011] In the technical solution of this application embodiment, since the first adsorption surface is parallel to the electrode conveying direction, it can provide a stable adsorption force, stabilize the waste and electrode during the cutting process, avoid waste shaking or displacement, improve the positional accuracy of the electrode tab after cutting, and ensure the stable straight-line transmission of the cut electrode, avoiding alignment deviation in subsequent processes caused by transmission direction deviation, thus ensuring production continuity. In addition, since the angle between the second adsorption surface and the conveying direction is not less than 5°, an effective guiding angle is formed. Therefore, when the waste is transferred from the corresponding position of the first adsorption element to the corresponding position of the second adsorption element, it begins to be subjected to the action of the inclined guiding force, generating a separation tendency along the inclined direction, and begins to separate from the electrode tab and electrode.

[0012] In some embodiments, the adsorption mechanism includes a third adsorption element having a third adsorption surface, wherein the angle between the third adsorption surface and the electrode travel direction is greater than the angle between the second adsorption surface and the electrode travel direction.

[0013] In the technical solution of this application embodiment, the angle of the third adsorption element is designed in a progressive increment. During the transmission process, the waste is subjected to an increasing tilt angle, and the waste is gradually guided away from the electrode area, making it easier for the waste to separate from the electrode. As the electrode continues to be transmitted, the separation distance between the waste and the electrode gradually increases, and the waste gradually moves away from the electrode, which reduces the risk of interference between the two to a certain extent and improves the reliability of waste discharge. Moreover, during the separation process, the electrode will not experience stress concentration due to sudden changes in separation force, reducing the risk of electrode root breakage.

[0014] In some embodiments, the angle between the plane containing the second adsorption surface and the plane containing the third adsorption surface is not less than 3°.

[0015] In the technical solution of this application embodiment, since the angle between the plane where the second adsorption surface is located and the plane where the third adsorption surface is located is not less than 3°, the angle difference causes a certain guiding turn at the joint of the adsorption element. When the waste material is transferred from the corresponding position of the second adsorption element to the corresponding position of the third adsorption element, the separation trend is further enhanced. Furthermore, when the waste material is transferred from the second adsorption element to the third adsorption element, the angle change is gradual, and the shear force and friction force on the waste material are small, thereby maintaining the continuity and stability of the transmission.

[0016] In some embodiments, the angle between the third adsorption surface and the electrode travel direction is less than 30°.

[0017] In the technical solution of this application embodiment, since the angle between the third adsorption surface and the electrode belt direction is within a suitable range, the adsorption force distribution of the adsorption surface is uniform, enabling more stable adsorption of waste. This prevents the waste from easily detaching from the predetermined waste recovery position during high-speed transport, thus improving separation stability and waste discharge reliability. Furthermore, controlling the angle reduces the negative pressure requirement of the adsorption chamber, thereby reducing equipment energy consumption and the operating load of the vacuum system, and decreasing production costs and space occupation.

[0018] In some embodiments, the angle between the second adsorption surface and the electrode travel direction is in the range of 5° to 10°; the angle between the third adsorption surface and the electrode travel direction is in the range of 10° to 20°; and / or, along the electrode travel direction, the length of the second adsorption surface is in the range of 50 mm to 100 mm, and the length of the third adsorption surface is in the range of 100 mm to 200 mm.

[0019] In the technical solution of this application embodiment, since the angle and length parameters are within a suitable range, it can cover the needs of most common electrode products and adapt to the production of short-pitch electrode tabs, thus improving the production flexibility and versatility of the electrode processing equipment. Furthermore, it can balance the space occupied by the equipment with the waste separation capacity, allowing sufficient separation time for the waste and avoiding subsequent interference caused by insufficient separation.

[0020] In some embodiments, the electrode cutting mechanism includes a laser source, the adsorption mechanism includes an upper adsorption member, the upper adsorption member is disposed upstream of the first adsorption member along the electrode traveling direction, and the laser source cuts the electrode at a position between the upper adsorption member and the first adsorption member.

[0021] In the technical solution of this application embodiment, since the upper adsorption member is disposed upstream of the first adsorption member and the laser cutting position is located between the two, the electrode sheet can be adsorbed simultaneously upstream and downstream, so that the electrode sheet is fully flattened in the cutting area, avoiding laser focus shift caused by electrode sheet wrinkles, and improving the cutting size accuracy and edge flatness of the electrode tab; in addition, it is beneficial to keep the electrode sheet and waste relatively fixed during the cutting process, avoiding electrode sheet or electrode tab shaking during cutting and causing poor cutting, thus improving the cutting quality.

[0022] In some embodiments, the cutting trajectory of the laser source includes a waste cutting trajectory that extends from the edge of the tab to the edge of the electrode sheet, for cutting off the waste.

[0023] In the technical solution of this application embodiment, since the cutting trajectory of the laser source includes the waste cutting trajectory, and the waste cutting trajectory extends from the tab to the edge of the electrode, the waste can be broken at fixed intervals. This helps to further prevent interference between the waste and the tab, facilitates waste separation and discharge, and makes the entire production process smoother and more efficient, improving production continuity, as well as product quality and production efficiency. Furthermore, the waste is cut simultaneously with the laser cutting of the tab, eliminating the need for a separate waste cutting mechanism, simplifying the equipment structure and reducing equipment investment costs.

[0024] In some embodiments, the electrode processing apparatus includes a waste recycling mechanism disposed downstream of the adsorption mechanism along the electrode conveying direction.

[0025] In the technical solution of this application embodiment, since the waste recycling mechanism is located downstream of the adsorption mechanism, the waste recycling mechanism and the adsorption mechanism are connected to form a closed loop, so that the waste separated by the adsorption mechanism is collected and removed in a timely manner, preventing the waste from flowing back or contaminating the electrode, avoiding the accumulation of waste inside the equipment, and improving the continuity and efficiency of the entire waste discharge process.

[0026] In some embodiments, the adsorption member has an adsorption cavity and a plurality of adsorption holes, the adsorption cavity being disposed inside the adsorption member, and the adsorption holes being opened on the adsorption surface and communicating with the adsorption cavity.

[0027] Therefore, the adsorption chamber acts as a negative pressure buffer and stabilizer. Multiple adsorption holes are opened on the adsorption surface to increase the area and adsorption force of the adsorption surface, so that the waste is balanced by force and is adsorbed by the adsorption component as a whole, preventing the waste from falling off due to insufficient adsorption force and improving the stability of the entire waste transportation process.

[0028] The beneficial effects of this disclosure include: By means of this application, waste material can be gradually moved away from the electrode sheet as the angle changes during transport, achieving gradual separation, improving the smoothness and efficiency of separation, and effectively avoiding mutual interference between waste material and electrode tabs during transport, as well as problems such as electrode tab folding and breakage. This is beneficial for improving the continuity of the waste discharge process, ultimately improving the production quality and efficiency of the electrode sheets.

[0029] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0030] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0031] Figure 1 Schematic diagrams of the electrode processing apparatus provided for some embodiments of this application;

[0032] Figure 2 Rear view of an electrode processing apparatus provided for some embodiments of this application;

[0033] Figure 3 The present invention provides schematic diagrams of the electrode structures involved in some embodiments of the present application.

[0034] Figure 4 This is an enlarged view of the tab portion involved in some embodiments of this application.

[0035] Explanation of reference numerals in the attached figures

[0036] 100. Electrode processing device; 10. Adsorption mechanism; 20. Electrode cutting mechanism; 30. Electrode conveying mechanism; 40. Waste recycling mechanism; 11. First adsorption element; 11A. First adsorption surface; 12. Second adsorption element; 12A. Second adsorption surface; 13. Third adsorption element; 13A. Third adsorption surface; 14. Upper adsorption element; 14A. Upper adsorption surface; 21. Laser source; 200. Cutting trajectory; 201. Electrode tab cutting trajectory; 202. Waste cutting trajectory; 300. Electrode; 301. Electrode tab; 302. Waste; 303. Recess. Detailed Implementation

[0037] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application; the terms “comprising” and “having”, and any variations thereof, in this document and the foregoing description of the accompanying drawings are intended to cover non-exclusive inclusion.

[0039] In the description of the embodiments of this application, technical terms such as "first," "second," and "third" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0040] In this document, the term "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 throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0041] In the description of the embodiments 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, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0042] In the description of the embodiments of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0043] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0044] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical term "contact" should be interpreted broadly, and can be direct contact, contact through an intermediate medium layer, contact between two contacting parties with substantially no interaction force, or contact between two contacting parties with interaction force.

[0045] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms "parallel" and "perpendicular" are both allowed to have a certain degree of tolerance and / or error, including cases of being approximately parallel and approximately perpendicular.

[0046] The following is a detailed description of this application.

[0047] Currently, new energy batteries are being used more and more widely in daily life and industry. They are not only used in energy storage systems for hydropower, thermal power, wind power, and solar power plants, but also extensively in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in aerospace and other fields. With the continuous expansion of the application areas of power batteries, the market demand is also constantly increasing.

[0048] In battery production, electrode sheets need to be processed and cut to form tabs. During tab forming, the cut tabs and the waste generated during cutting need to be separated. In related technologies, there is a problem that effective waste removal cannot be achieved in the processing of short-pitch tabs. Therefore, how to improve the efficiency of waste separation in electrode processing is one of the research topics in the industry.

[0049] Through research and design, an adsorption mechanism is set in the electrode processing device to adsorb and separate waste materials. The adsorption mechanism includes multiple adsorption elements that gradually deviate from the electrode along the electrode belt direction, which can realize the gradual separation of waste materials.

[0050] Based on this design concept, this application designs an electrode processing device, which includes an electrode cutting mechanism, an electrode conveying mechanism, and an adsorption mechanism. The electrode conveying mechanism is used to transport electrodes; the electrode cutting mechanism is used to cut electrodes to form electrode tabs; the adsorption mechanism includes multiple adsorption elements arranged along the electrode travel direction, each adsorption element having an adsorption surface for adsorbing waste generated during cutting. The adsorption surface of each adsorption element is parallel to or forms an acute angle with the electrode travel direction; along the electrode travel direction, the angle between the extension direction of the adsorption surface of each adsorption element and the electrode travel direction gradually increases.

[0051] In the technical solution of this application embodiment, since the adsorption mechanism includes multiple adsorption elements arranged along the electrode belt direction, and the adsorption surface of each adsorption element is parallel to or forms an acute angle with the electrode belt direction, and the angle between the extension direction of the adsorption surface of each adsorption element and the electrode belt direction gradually increases, the waste material can be adsorbed by the negative pressure generated by the adsorption surface, preventing the waste material from randomly scattering or sticking to the electrode tabs after cutting, thereby reducing the risk of interference between the waste material and the electrode tabs and improving the electrode tab forming quality. Furthermore, the waste material is subjected to a gradually changing guiding force during transmission, and can gradually move away from the electrode movement trajectory as the angle changes, achieving gradual separation. This avoids waste material jamming or electrode tab folding or even damage due to sudden angle changes, improving the smoothness and efficiency of separation, which is beneficial to improving the continuity of the waste discharge process, and ultimately improving the production quality and efficiency of the electrode.

[0052] In the embodiments of this application, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0053] The battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0054] Although not illustrated, a single battery cell typically includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charging and discharging process of a single battery cell, active ions (such as lithium ions) repeatedly insert and extract between the positive and negative electrodes. The separator, positioned between the positive and negative electrodes, prevents short circuits while allowing active ions to pass through.

[0055] In some embodiments, the electrode assembly has tabs that allow current to be drawn from the electrode assembly. The tabs include a positive tab and a negative tab.

[0056] In some embodiments, the electrode assembly can be a wound structure, a stacked structure, or a hybrid structure of wound and stacked.

[0057] In some embodiments, a battery cell may include a housing. The housing is used to encapsulate components such as electrode assemblies and electrolytes. The housing may be made of steel, aluminum, plastic (such as polypropylene), composite metal (such as copper-aluminum composite), or aluminum-plastic film, etc.

[0058] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. Prismatic battery cells include prismatic battery cells, blade-shaped battery cells, and multi-prismatic batteries, such as hexagonal prismatic batteries. This application does not have any particular limitations.

[0059] The battery apparatus mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells connected in series, parallel, or mixed connections via a busbar.

[0060] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells; as an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form a single module. As an example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0061] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more individual battery cells housed within the housing.

[0062] Below, refer to Figures 1 to 4 Some embodiments of this application will be described in detail.

[0063] Figure 1 Schematic diagrams of the electrode processing apparatus provided for some embodiments of this application; Figure 2 Rear view of an electrode processing apparatus provided for some embodiments of this application; Figure 3 The present invention provides schematic diagrams of the electrode structures involved in some embodiments of the present application. Figure 4 This is an enlarged view of the tab portion involved in some embodiments of this application.

[0064] In some embodiments of this application, for ease of explanation, an electrode travel direction, an electrode thickness direction, and an electrode width direction are defined. These directions intersect each other; here, intersecting includes perpendicularly intersecting each other. For ease of understanding of the embodiments of this application, Figures 1 to 12 are provided. Figure 4In the illustrated embodiments, the electrode travel direction, electrode thickness direction, and electrode width direction are given as examples where they intersect each other perpendicularly. However, those skilled in the art should understand that the embodiments of this application are not limited to the case where these three directions intersect each other perpendicularly. For ease of explanation, as shown by the arrows in Figures 1 to 4, the direction of arrow X is the electrode thickness direction, the direction of arrow Y is the electrode width direction, and the direction of arrow Z is the electrode travel direction. Sometimes, the direction pointed to by arrow Z along the third direction is referred to as "above," and its opposite direction is referred to as "below."

[0065] This application provides an electrode processing apparatus 100. In this embodiment, the electrode processing apparatus 100 includes an electrode cutting mechanism 20, an electrode conveying mechanism 30, and an adsorption mechanism 10. The electrode conveying mechanism 30 is used to transport the electrode 300. The electrode cutting mechanism 20 is used to cut the electrode 300 to form electrode tabs 301. The adsorption mechanism 10 includes a plurality of adsorption elements arranged along the electrode 300's travel direction (Z). The adsorption elements have adsorption surfaces for adsorbing waste material 302 generated during cutting. The adsorption surfaces of each adsorption element are parallel to or form an acute angle with the electrode 300's travel direction (Z). Along the electrode 300's travel direction (Z), the angle between the extension direction of the adsorption surface of each adsorption element and the electrode 300's travel direction (Z) gradually increases.

[0066] It should be noted that some battery electrodes 300 are designed with dual tabs 301, with the distance between the two tabs 301 being less than 75mm. This results in the waste material 302 being small in size, making it difficult to be properly adsorbed and separated, and thus preventing effective waste removal during the electrode 300 processing.

[0067] It should be noted that the embodiments of this application use edge die-cutting for cutting, that is, the width of the uncut electrode 300 is larger than the width of the cut electrode 300. The waste material 302 cut off has a certain size, which meets the adsorption separation requirements, but the waste material 302 and the tab 301 are prone to interference, which increases the difficulty of separation.

[0068] It is understandable that the electrode conveying mechanism 30 is used to drive the electrode 300 to move in a preset direction, so as to facilitate continuous cutting of the electrode 300.

[0069] It is understandable that the belt travel direction (Z) of electrode 300 refers to the overall direction in which electrode 300 is continuously or stepwise transported during the processing.

[0070] Optionally, the electrode conveying mechanism 30 may include an unwinding roller, a take-up roller, etc., and the electrode 300 is conveyed between the unwinding roller and the take-up roller, with the conveying direction being from the unwinding roller to the take-up roller.

[0071] For example, such as Figure 1As shown, the unwinding roller is not shown in the figure. The belt travel direction (Z) of electrode 300 is from top to bottom, which can be the direction of gravity.

[0072] For example, the take-up roller is a vacuum adsorption roller, capable of picking up the electrode sheet 300. It can employ various adsorption methods such as negative pressure, electrostatic, and magnetic attraction (not limited to the above-mentioned solutions). When adsorbing the cut electrode tabs 301, it can tightly adhere the electrode sheet 300 to the roller body, ensuring that the electrode sheet 300 maintains a stable shape and position during subsequent transport and other processes. This prevents the electrode tabs 301 from contacting, colliding, or interfering with the waste material 302 during movement, thereby ensuring the integrity of the electrode tabs 301 and the smooth progress of subsequent processes.

[0073] Optionally, the electrode conveying mechanism 30 may also include a roller system structure such as tension rollers, clamping rollers, and guide rollers.

[0074] For example, clamping rollers can be provided upstream and downstream of the cutting position of the electrode cutting mechanism 20 to stabilize the electrode 300 during cutting and prevent shaking.

[0075] Optionally, the electrode conveying mechanism 30 may also include a drive component, such as a servo motor. The servo motor can precisely control the unwinding and rewinding, thus ensuring a stable belt speed.

[0076] Optionally, the electrode cutting mechanism 20 may include a laser cutting assembly or a mechanical die-cutting assembly. Laser cutting utilizes a high-power-density laser beam to irradiate the electrode 300 to be cut and move it continuously, causing the material of the electrode 300 to evaporate and form holes and kerfs, thus completing the cutting of the tab 301. Laser cutting, through programmable control of the optical path and without physical contact, is more adaptable to complex and precise trajectory requirements, making it the preferred method for solving the short-pitch problem in this solution. The mechanical die-cutting assembly may include a mechanical die-cutting blade, which forms the tab 301 by cutting with the blade.

[0077] Optionally, the electrode processing apparatus 100 may also include a frame, a control system (such as a PLC), etc.

[0078] Optionally, adsorption refers to the process of separating waste material 302 from the cut electrode sheet 300 by generating adsorption force through negative pressure, electrostatics, magnetic attraction, etc.

[0079] It is understandable that the adsorption surface can directly adsorb waste 302 or apply adsorption force to waste 302.

[0080] It is understandable that, along the thickness direction (X) of the electrode 300, the adsorption element can be at a certain distance from the electrode 300, which is beneficial to leave a certain space for the separation of waste 302.

[0081] Optionally, the number of adsorption elements can be multiple, such as three, four, five, etc.

[0082] Optionally, multiple adsorption elements are connected by hinges, or multiple adsorption elements are mounted on a support, fixing the relative positions and angles between the adsorption elements.

[0083] Optionally, multiple adsorption elements are connected sequentially along the belt direction (Z) of the electrode 300. In this embodiment, the gap between adjacent adsorption elements is not limited, as long as the waste material 302 is not stuck.

[0084] Optionally, the shape of the adsorption surface can be rectangular, elongated, circular, elliptical, or other irregular shapes.

[0085] Optionally, the adsorption surface can be provided with multiple adsorption holes or adsorption tanks to adsorb waste material 302.

[0086] It should be noted that the cut electrode 300 in the embodiments of this application includes a tab 301 and a coating portion (current collector and electrode material). For ease of explanation, the tab 301 will be used to refer to the cut electrode 300 in the following description.

[0087] In the technical solution of this application embodiment, since the adsorption mechanism 10 includes a plurality of adsorption elements arranged along the belt-carrying direction (Z) of the electrode 300, and the adsorption surface of each adsorption element is parallel to or forms an acute angle with the belt-carrying direction (Z) of the electrode 300, and the angle between the extension direction of the adsorption surface of each adsorption element and the belt-carrying direction (Z) of the electrode 300 gradually increases, the waste material 302 can be adsorbed by the negative pressure generated by the adsorption surface, preventing the waste material 302 from randomly drifting or sticking to the electrode tab 301 after cutting, thereby reducing the risk of interference between the waste material 302 and the electrode tab 301 and improving the forming quality of the electrode tab 301. Furthermore, the waste material 302 is subjected to a gradually changing guiding force during the transmission process. As the angle changes during the transmission process, the waste material 302 can gradually move away from the movement trajectory of the electrode 300, achieving gradual separation. This avoids the waste material 302 from getting stuck or the electrode tab 301 from flipping or even breaking due to sudden angle changes, thereby improving the smoothness and efficiency of separation. This is conducive to improving the continuity of the waste discharge process, and ultimately improving the production quality and efficiency of the electrode 300.

[0088] In the embodiments of this application, the adsorption surface is disposed on the side of the adsorption member facing the electrode 300, and along the thickness direction (X) of the electrode 300, the electrode cutting mechanism 20 and the adsorption mechanism 10 are respectively disposed on both sides of the electrode 300.

[0089] It is understandable that the thickness direction (X) of electrode 300 is perpendicular to the stripping direction (Z) of electrode 300.

[0090] For example, such as Figure 1 As shown, the electrode 300 travels in the direction of gravity (Z), and the electrode 300 is transported from top to bottom. The electrode cutting mechanism 20 is on the right side of the figure, and the adsorption mechanism 10 is on the left side of the figure, saving equipment floor space.

[0091] In the technical solution of this application embodiment, since the adsorption surface is located on the side of the adsorption member facing the electrode 300, and the electrode cutting mechanism 20 and the adsorption mechanism 10 are respectively located on both sides of the electrode 300, the cutting mechanism can cut from one side, while the adsorption mechanism 10 directly adsorbs the waste material 302 from the other side, preventing mutual interference between the setting positions and realizing the simultaneous operation of cutting and waste discharge, thereby improving processing efficiency. Furthermore, the adsorption force of the adsorption surface can directly act on the waste material 302 generated by cutting, more firmly adsorbing the waste material 302, preventing it from falling off or shifting during transmission, and ensuring the separation effect.

[0092] In the embodiments of this application, the adsorption mechanism 10 includes a first adsorption member 11 and a second adsorption member 12; the first adsorption member 11 has a first adsorption surface 11A, which is parallel to the belt-carrying direction (Z) of the electrode 300; the second adsorption member 12 has a second adsorption surface 12A, which has an angle of not less than 5° with the belt-carrying direction (Z) of the electrode 300.

[0093] For example, such as Figure 1 , Figure 2 As shown, the first adsorption surface 11A is parallel to the banding direction (Z) of the electrode 300, and the angle between the second adsorption surface 12A and the banding direction (Z) of the electrode 300 is α. The angle α is not less than 5°.

[0094] In the technical solution of this application embodiment, since the first adsorption surface 11A is parallel to the belt travel direction (Z) of the electrode 300, it can provide a stable adsorption force, stabilize the waste material 302 and the electrode 300 during the cutting process, avoid the waste material 302 from shaking or shifting, improve the positional accuracy of the electrode tab 301 after cutting, and the cut electrode 300 can be stably transported along a straight line, avoiding the alignment deviation of subsequent processes caused by the shift in the transport direction, and ensuring production continuity. In addition, since the angle between the second adsorption surface 12A and the belt travel direction (Z) is not less than 5°, an effective guiding angle is formed. Therefore, when the waste material 302 is transferred from the corresponding position of the first adsorption member 11 to the corresponding position of the second adsorption member 12, it begins to be subjected to the action of the inclined guiding force, generating a separation tendency along the inclined direction, and begins to separate from the electrode tab 301.

[0095] In the embodiments of this application, the adsorption mechanism 10 includes a third adsorption member 13, the third adsorption member 13 having a third adsorption surface 13A, and the angle between the third adsorption surface 13A and the belt-carrying direction (Z) of the electrode 300 being greater than the angle between the second adsorption surface 12A and the belt-carrying direction (Z) of the electrode 300.

[0096] For example, such as Figure 1 As shown, the angle between the third adsorption surface 13A and the belt-carrying direction (Z) of the electrode 300 is β, which is greater than the angle α between the second adsorption surface 12A and the belt-carrying direction (Z) of the electrode 300.

[0097] It is understandable that β > α, which causes the waste 302 and the tab 301 to gradually separate starting from the second adsorption element 12, and the distance between the waste 302 and the tab 301 gradually increases until they are completely separated.

[0098] Optionally, the adsorption mechanism 10 may also include other adsorption elements disposed downstream of the third adsorption element 13. It is understood that the angle between the other adsorption elements, such as the fourth adsorption element, and the belt travel direction (Z) of the electrode 300 is greater than the angle β, further separating the waste 302 from the electrode 300.

[0099] In the technical solution of this application embodiment, the angle of the third adsorption element 13 is designed in a progressive increment. During the transmission process, the waste 302 is subjected to an increasing tilt angle, and the waste 302 is gradually guided away from the electrode 301 area, making it easier for the waste 302 to separate from the electrode 301. As the electrode 300 continues to be transmitted, the separation distance between the waste 302 and the electrode 300 gradually increases, and the waste 302 gradually moves away from the electrode 300, which reduces the risk of the two interfering again to a certain extent and improves the reliability of waste discharge. Moreover, during the separation process, the electrode 301 will not experience stress concentration due to sudden changes in separation force, reducing the risk of the electrode 301 breaking at the root.

[0100] In the embodiments of this application, the angle between the plane containing the second adsorption surface 12A and the plane containing the third adsorption surface 13A is not less than 3°.

[0101] It is understandable that there is a certain angle between adjacent adsorption elements, which allows the waste 302 to gradually separate from the tab 301.

[0102] In the technical solution of this application embodiment, since the angle between the plane where the second adsorption surface 12A is located and the plane where the third adsorption surface 13A is located is not less than 3°, this angle difference causes a certain guiding turn at the joint of the adsorption element. When the waste 302 is transferred from the corresponding position of the second adsorption element 12 to the corresponding position of the third adsorption element 13, the separation trend is further enhanced. Furthermore, when the waste 302 is transferred from the second adsorption element 12 to the third adsorption element 13, the angle change is gradual, and the shear force and friction force on the waste 302 are small, thereby maintaining the continuity and stability of the transmission.

[0103] In the embodiments of this application, the angle between the third adsorption surface 13A and the belt-carrying direction (Z) of the electrode 300 is less than 30°.

[0104] In the technical solution of this application embodiment, since the angle between the third adsorption surface 13A and the belt-carrying direction (Z) of the electrode 300 is within a suitable range, the adsorption force distribution of the adsorption surface is uniform, which enables relatively stable adsorption of the waste 302. This makes it less likely for the waste 302 to detach from the predetermined waste 302 recovery position during high-speed transport, which is beneficial to improving separation stability and waste discharge reliability. In addition, the angle can be controlled to reduce the negative pressure requirement of the adsorption chamber, thereby reducing the energy consumption of the equipment and the operating load of the vacuum system, and reducing production costs and space occupation.

[0105] In the embodiments of this application, the angle α between the second adsorption surface 12A and the belt-carrying direction (Z) of the electrode 300 is in the range of 5° to 10°; the angle β between the third adsorption surface 13A and the belt-carrying direction (Z) of the electrode 300 is in the range of 10° to 20°, and / or, along the belt-carrying direction (Z) of the electrode 300, the length of the second adsorption surface 12A is in the range of 50 mm to 100 mm, and the length of the third adsorption surface 13A is in the range of 100 mm to 200 mm.

[0106] Optionally, the angle α between the second adsorption surface 12A and the belt-carrying direction (Z) of the electrode 300 can be any one of the following values, or any value between any two of these values: 5°, 6°, 7°, 8°, 9°, 10°.

[0107] Optionally, the angle β between the third adsorption surface 13A and the belt-carrying direction (Z) of the electrode 300 can be any one of the following values, or any value between any two of these values: 10°, 11°, 12°, 13°, 14°, 15°, 16°, 17°, 18°, 19°, 20°.

[0108] Optionally, along the Z-direction of the electrode 300, the length of the second adsorption surface 12A can be any one of the following values, or any value between any two of these values: 50mm, 55mm, 60mm, 65mm, 70mm, 75mm, 80mm, 85mm, 90mm, 95mm, 100mm.

[0109] Optionally, along the Z-direction of the electrode 300, the length of the third adsorption surface 13A can be any one of the following values, or any combination of these values: 100mm, 110mm, 120mm, 130mm, 140mm, 150mm, 160mm, 170mm, 180mm, 190mm, 200mm.

[0110] Understandably, a suitable distance and angle can ensure that the waste material 302 and the tab 301, which are separated layer by layer, can follow the expected path and state when they are transferred from one adsorption element to the next, effectively avoiding mutual interference between the waste material 302 and the tab 301 during the transfer process, and preventing problems such as the tab 301 being flipped or damaged.

[0111] It is understandable that the size of the included angle and the extension length of the adsorption surface along the Z-direction of the electrode 300 are related to the weight, thickness, and cutting process of the waste 302. Those skilled in the art can change parameters such as the included angle and the length of the adsorption surface according to actual needs.

[0112] Optionally, the length of the first adsorption surface 11A along the Z-direction of the electrode 300 is in the range of 10 to 50 mm.

[0113] In the technical solution of this application embodiment, since the angle and length parameters are within a suitable range, it can cover the needs of most common electrode products 300, and can also adapt to the production of short-pitch electrode tabs 301, improving the production flexibility and versatility of the electrode processing device 100. Furthermore, it can balance the space occupied by the equipment with the separation capacity of the waste 302, ensuring sufficient separation time for the waste 302 and avoiding subsequent interference caused by insufficient separation.

[0114] In the embodiments of this application, the electrode cutting mechanism 20 includes a laser source 21, and the adsorption mechanism 10 includes an upper adsorption member 14. Along the belt-carrying direction (Z) of the electrode 300, the upper adsorption member 14 is disposed upstream of the first adsorption member 11, and the position where the laser source 21 cuts the electrode 300 is located between the upper adsorption member 14 and the first adsorption member 11.

[0115] Understandably, the upper adsorption element 14 is located upstream of the first adsorption element 11 and works in concert with the first adsorption element 11 to pre-fix and flatten the electrode 300 before laser cutting. Its core function is to ensure the flatness of the electrode 300 in the cutting area.

[0116] It is understandable that the upper adsorption element 14 also has an upper adsorption surface 14A parallel to the belt direction (Z) of the electrode 300, which works in conjunction with the first adsorption element 11 to stabilize the electrode 300 and facilitate cutting.

[0117] The embodiments of this application do not limit the specific shape and adsorption capacity of the upper adsorption element 14.

[0118] For example, such as Figure 1 As shown, the laser cutting location is the area within the dashed box in the figure.

[0119] It is understandable that the laser source 21 is the energy output component of the electrode cutting mechanism 20, which realizes the precise cutting of the electrode 300 by emitting a laser beam, and may include a laser generator, focusing lens group, polarizing mirror, etc.

[0120] Optionally, the laser source 21 can be any of a solid-state laser, a gas laser (such as a carbon dioxide laser), or a fiber laser.

[0121] Optionally, the electrode cutting mechanism 20 may also include a cooling assembly, a rangefinder, a sensor, etc.

[0122] In the technical solution of this application embodiment, since the upper adsorption member 14 is disposed upstream of the first adsorption member 11 and the laser cutting position is located between the two, the electrode 300 can be adsorbed simultaneously upstream and downstream, so that the electrode 300 is fully flattened in the cutting area, avoiding laser focus shift caused by the wrinkles of the electrode 300, and improving the cutting size accuracy and edge flatness of the electrode tab 301; in addition, it is beneficial to keep the electrode 300 and the waste 302 relatively fixed during the cutting process, avoiding the electrode 300 or electrode tab 301 shaking during cutting, which would lead to poor cutting and improve the cutting quality.

[0123] In the embodiments of this application, the cutting trajectory 200 of the laser source 21 includes a waste cutting trajectory 202, which extends from the edge of the tab 301 to the edge of the electrode 300 for cutting off the waste 302.

[0124] It is understandable that the cutting trajectory 200 of the laser source 21 includes the tab cutting trajectory 201.

[0125] It is understood that the electrode cutting trajectory 201 is related to the shape of the electrode 301. Those skilled in the art can modify it according to actual needs.

[0126] For example, such as Figure 3 , Figure 4 As shown, the tab cutting trajectory 201 cuts out the tab 301 and waste material 302 on the electrode 300. The waste material cutting trajectory 202 extends from the edge of the tab 301 to the edge of the electrode 300, cutting off the waste material 302.

[0127] For example, a waste cutting trajectory 202 is provided at the position of each tab 301, that is, the number of tabs 301 is the same as the number of waste cutting trajectories 202.

[0128] For example, such as Figure 3 As shown, a waste cutting trajectory 202 is set at the position of individual tabs 301, and there is at least one complete tab 301 between adjacent waste cutting trajectories 202. That is, the waste 302 is cut intermittently.

[0129] Optionally, the waste cutting trajectory 202 can be of any shape, as long as it can cut the waste 302 along the width direction (Y) of the electrode 300.

[0130] Optionally, the dimension of the waste cutting trajectory 202 along the width direction (Y) of the electrode 300 is greater than 3 mm, and / or, the dimension of the waste cutting trajectory 202 along the width direction (Y) of the tab 301 is greater than or equal to one-tenth of the height of the tab 301. In this embodiment, the height of the tab 301 refers to the dimension of the tab 301 along the width direction (Y) of the electrode 300.

[0131] For example, such as Figure 4 As shown, the waste cutting trajectory 202 can be figure-eight shaped. It can be understood that the rotation of the laser source 21 has a certain inertia, and the waste cutting trajectory 202 formed when turning is arc-shaped.

[0132] For example, when the laser cuts along the waste cutting trajectory 202, a recess 303 is cut out at the edge of the electrode 300. The recess 303 can be observed under a microscope. The recess 303 extends through the thickness direction (X) of the electrode 300 and is recessed inward along the width direction (Y) of the electrode 300.

[0133] Optionally, the depth H of the recess 303 along the width direction (Y) of the electrode 300 is less than or equal to 1 mm.

[0134] Optionally, the angle between the sidewall and the bottom wall of the recess 303 is a right angle or an obtuse angle.

[0135] Understandably, the waste cutting trajectory 202 can use laser cutting to cut off the waste 302 and avoid interference with the tab 301. By strictly controlling the angle θ and depth H of the cutting position, the cutting stability is ensured, and product safety is also guaranteed. A suitable angle θ allows the laser to act on the tab 301 more reasonably, avoiding the impact on product safety due to an excessively small cutting angle. An appropriate height H can control parameters such as the cutting depth, preventing excessive cutting from affecting the overall performance of the electrode 300, or insufficient cutting from causing incomplete cutting of the waste 302, which could lead to subsequent interference between the tab 301 and the waste 302.

[0136] In the technical solution of this application embodiment, since the cutting trajectory 200 of the laser source 21 includes a waste cutting trajectory 202, and the waste cutting trajectory 202 extends from the tab 301 to the edge of the electrode 300, the waste 302 can be broken at fixed intervals. This helps to further prevent interference between the waste 302 and the tab 301, facilitates the separation and discharge of the waste 302, and makes the entire production process smoother and more efficient, improving production continuity, and also improving product quality and production efficiency. Furthermore, the waste 302 is cut simultaneously when the laser cuts the tab 301, eliminating the need for a separate waste 302 cutting mechanism, simplifying the equipment structure and reducing equipment investment costs.

[0137] In the embodiments of this application, the electrode processing apparatus 100 includes a waste recycling mechanism 40, which is located downstream of the adsorption mechanism 10 along the belt-carrying direction (Z) of the electrode 300.

[0138] For example, the waste recycling facility 40 includes a waste 302 bin for collecting and storing waste 302.

[0139] In the technical solution of this application embodiment, since the waste recycling mechanism 40 is located downstream of the adsorption mechanism 10, the waste recycling mechanism 40 and the adsorption mechanism 10 are connected to form a closed loop, so that the waste 302 separated by the adsorption mechanism 10 is collected and removed in time, preventing the waste 302 from flowing back or contaminating the electrode 300, avoiding the accumulation of waste 302 inside the equipment, and improving the continuity and efficiency of the entire waste discharge process.

[0140] In the embodiments of this application, the adsorption member has an adsorption cavity and a plurality of adsorption holes. The adsorption cavity is disposed inside the adsorption member, and the adsorption holes are opened on the adsorption surface and communicate with the adsorption cavity.

[0141] For example, the adsorption element can be a vacuum adsorption belt, which adsorbs the waste 302 and drives the waste 302 to move towards the waste recycling mechanism 40.

[0142] For example, the adsorption chamber is a negative pressure chamber.

[0143] In the technical solution of this application embodiment, the adsorption chamber thus plays the role of negative pressure buffer and pressure stabilization. Multiple adsorption holes are opened on the adsorption surface, which increases the area of ​​the adsorption surface and the adsorption force, so that the waste 302 is balanced by force and is adsorbed by the adsorption component as a whole, preventing the waste 302 from falling off due to insufficient adsorption force and improving the stability of the waste 302 throughout the transmission process.

[0144] For example, after passing the corresponding position of the third adsorption element 13, the electrode 300 is separated from the waste material 302 and enters the take-up roller. The take-up roller can be a vacuum separation roller, which has an adsorption function to adsorb the tabs 301 on the electrode 300 to avoid interference with the waste material 302 and damage, or folding due to centrifugal force during the roll. At the same time, this stable adsorption can also prevent unnecessary contact or interference between the tabs 301 and the waste material 302, ensuring that the tabs 301 can participate in production in a normal shape and position in subsequent processes, providing a basic guarantee for product quality.

[0145] Understandably, when the cut tabs 301 are adsorbed, the vacuum separation roller can tightly adhere the tabs 301 to the roller body, so that the tabs 301 maintain a stable shape and position during subsequent transmission and other processes, avoiding interference such as contact or collision between the tabs 301 and the waste material 302 during movement, thereby improving the integrity of the tabs 301 and the smooth progress of subsequent processes.

[0146] The specific solutions of the embodiments of this application are described below with reference to the accompanying drawings.

[0147] In related technologies, short-pitch tabs 301 (less than 75mm) cannot effectively remove waste during the molding process. To improve stability, a multi-segment adsorption unit with an independently set negative pressure adsorption chamber is adopted. This design utilizes the adsorption force generated by the negative pressure to ensure the waste material 302 is more stably transferred on the adsorption unit. Simultaneously, the rational planning of the distance and angle between the three belt segments is also crucial. Appropriate distances and angles allow the waste material 302 and tabs 301, separated layer by layer, to follow the expected path and state when transferring from one adsorption unit to the next, effectively avoiding mutual interference between waste material 302 and tabs 301 during transfer, and preventing problems such as tab 301 folding or breakage. This ensures that tabs 301 can participate in production in a normal shape and position in subsequent processes, providing a fundamental guarantee for product quality.

[0148] In a specific embodiment, the electrode processing apparatus 100 includes an electrode cutting mechanism 20, an electrode conveying mechanism 30, and an adsorption mechanism 10. The electrode conveying mechanism 30 is used to transport the electrode 300; the electrode cutting mechanism 20 is used to cut the electrode 300 to form electrode tabs 301; the adsorption mechanism 10 includes a plurality of adsorption elements arranged along the electrode 300's travel direction (Z). Each adsorption element has an adsorption surface, which is used to adsorb waste material 302 generated during cutting. The adsorption surface of each adsorption element is parallel to or forms an acute angle with the electrode 300's travel direction (Z). Along the electrode 300's travel direction (Z), the angle between the extension direction of the adsorption surface of each adsorption element and the electrode 300's travel direction (Z) gradually increases.

[0149] In a specific embodiment, the adsorption mechanism 10 includes a first adsorption element 11. The first adsorption surface 11A of the first adsorption element 11 is parallel to the belt direction (Z) of the electrode 300. During the cutting process, the adsorption force can stabilize the electrode 300 or the tab 301, keeping it in a relatively fixed position during cutting, avoiding cutting errors caused by focus shift, and improving the stability of the cutting operation.

[0150] In a specific embodiment, the adsorption mechanism 10 includes a first adsorption element 11 and two inclined cavities, namely a second adsorption element 12 and a third adsorption element 13, with the inclination angle of each adsorption element satisfying β > α. This design utilizes the difference in inclination angle to gradually separate the waste material 302 and the electrode 300. As the waste material 302 and the electrode 300 are transported in the inclined cavities, under the influence of different inclination angles, they will gradually separate due to their own characteristics (such as weight, shape, etc.) and the guiding effect of the cavities, effectively avoiding mutual interference between the electrode tab 301 and the waste material 302 during the separation process.

[0151] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0152] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0153] The above embodiments are merely illustrative of the technical solutions of this application and are not intended to limit it. 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 all should be covered within the scope of protection claimed in this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various 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 protection claimed.

Claims

1. A pole piece processing apparatus characterized by, The pole piece cutting mechanism, the pole piece conveying mechanism and the adsorption mechanism, the pole piece conveying mechanism is used for conveying the pole piece, the pole piece cutting mechanism is used for cutting the pole piece to form the pole lug, the adsorption mechanism includes a plurality of adsorption members arranged along the pole piece running direction, the adsorption member has an adsorption surface, the adsorption surface is used for adsorbing the waste generated by cutting, the adsorption surface of each adsorption member is parallel or acute angle with the pole piece running direction, and the extension direction of the adsorption surface of each adsorption member gradually increases with the pole piece running direction.

2. The pole piece processing apparatus of claim 1, wherein The adsorption surface is arranged on the side of the adsorption member facing the pole piece, and the pole piece cutting mechanism and the adsorption mechanism are arranged on both sides of the pole piece along the pole piece thickness direction.

3. The pole piece processing apparatus of claim 2, wherein The adsorption mechanism includes a first adsorption member and a second adsorption member, the first adsorption member has a first adsorption surface parallel to the pole piece running direction, and the second adsorption member has a second adsorption surface with an angle not less than 5° with the pole piece running direction.

4. The pole piece processing apparatus of claim 3, wherein The adsorption mechanism includes a third adsorption member, the third adsorption member has a third adsorption surface with an angle greater than the angle between the second adsorption surface and the pole piece running direction.

5. The pole piece processing apparatus of claim 4, wherein, The angle between the plane where the second adsorption surface is located and the plane where the third adsorption surface is located is not less than 3°.

6. The pole piece processing apparatus of claim 4, wherein The angle between the third adsorption surface and the pole piece running direction is less than 30°.

7. The pole piece processing apparatus of claim 4, wherein The angle between the second adsorption surface and the pole piece running direction is in the range of 5° to 10°, the angle between the third adsorption surface and the pole piece running direction is in the range of 10° to 20°, and / or, along the pole piece running direction, the length of the second adsorption surface is in the range of 50mm to 100mm, and the length of the third adsorption surface is in the range of 100mm to 200mm.

8. The pole piece processing apparatus according to any one of claims 3 to 7, characterized by, The pole piece cutting mechanism includes a laser source, the adsorption mechanism includes an upper adsorption member, along the pole piece running direction, the upper adsorption member is arranged upstream of the first adsorption member, and the position of the laser source cutting the pole piece is located between the upper adsorption member and the first adsorption member.

9. The pole piece processing apparatus of claim 8, wherein, The cutting track of the laser source includes a waste cutting track extending from the edge of the pole lug to the edge of the pole piece for cutting off the waste.

10. The pole piece processing apparatus of any one of claims 1 to 7, wherein, The pole piece processing device includes a waste recovery mechanism arranged downstream of the adsorption mechanism along the pole piece running direction.

11. The pole piece processing apparatus of any one of claims 1 to 7, wherein, The adsorption member has an adsorption cavity arranged inside the adsorption member and a plurality of adsorption holes opened in the adsorption surface and communicated with the adsorption cavity.

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