Electrode manufacturing equipment

Abstract

This application provides an electrode manufacturing apparatus, relating to the field of batteries. The electrode manufacturing apparatus includes a film forming mechanism, a cutting mechanism, and a laminating mechanism. The film forming mechanism is used to form a film blank from material. The cutting mechanism is located downstream of the film forming mechanism and is used to cut at least one edge material along the width direction of the film blank to form a film. The laminating mechanism is located downstream of the cutting mechanism and is used to laminate the film with a substrate to form an electrode. The film forming mechanism can form a film blank from material. The film blank has edge material located on at least one side along its width direction, including wavy edges, serrated edges, burrs, etc. The presence of edge material affects the performance of the electrode. By setting the cutting mechanism to cut the edge material of the film blank to form a film, and by using the laminating mechanism to laminate the film with a substrate to form an electrode, the impact of edge material on the electrode performance is reduced, the electrode performance is improved, and the electrode yield is increased.

Description

Technical Field

[0001] This application relates to the field of batteries, and more specifically, to an electrode manufacturing apparatus. Background Technology

[0002] Batteries are widely used in the new energy field, such as in electric vehicles and new energy vehicles, which have become a new trend in the automotive industry. A battery includes electrode components, which are the parts in the battery where electrochemical reactions occur. Electrode components are mainly composed of positive and negative electrode sheets wound or stacked.

[0003] Currently, electrode manufacturing is mainly divided into wet process technology and dry process technology. However, electrodes manufactured using the dry process technology often have poor performance. Summary of the Invention

[0004] The purpose of this application is to provide an electrode manufacturing apparatus that aims to improve the problem that the performance of electrodes manufactured by dry process technology in related technologies is often poor.

[0005] This application provides an electrode manufacturing apparatus, which includes a film forming mechanism, a cutting mechanism, and a composite mechanism. The film forming mechanism is used to form a film blank from a material. The cutting mechanism is located downstream of the film forming mechanism and is used to cut at least one edge of the film blank along its width direction to form a film. The composite mechanism is located downstream of the cutting mechanism and is used to composite the film with a substrate to form an electrode.

[0006] In the above technical solution, the membrane forming mechanism can form the material into a membrane blank. The membrane blank has edge material located on at least one side along its width direction, including wavy edges, serrated edges, burrs, etc. The presence of edge material affects the performance of the electrode. The edge material of the membrane blank is cut by a cutting mechanism to form a membrane. The membrane is then laminated with a substrate by a laminating mechanism to form an electrode. The electrode manufactured using this electrode manufacturing device reduces or eliminates the impact of edge material on electrode performance by using a cutting mechanism to cut the edge material, thereby improving the performance of the electrode and increasing the yield rate.

[0007] As an optional technical solution in this application embodiment, the cutting mechanism includes a first fixed base and a cutting unit; the cutting unit is used to cut the diaphragm blank, and the cutting unit is adjustablely positioned on the first fixed base along the width direction.

[0008] In the above technical solution, by adjusting the position of the cutting unit along the width direction on the first fixed base, the position of the cutting unit can be adjusted as needed during production, thereby cutting off as much edge material as possible and reducing the impact of edge material on the electrode performance. Furthermore, by adjusting the position of the cutting unit in the width direction, it can also be used to manufacture electrodes of different widths, improving the adaptability of the electrode manufacturing apparatus.

[0009] As an optional technical solution in this application embodiment, the cutting unit includes a first driving mechanism and a cutting blade. The first driving mechanism is connected to the first fixed base and the cutting blade. The first driving mechanism is configured to drive the cutting blade to move closer to or away from the diaphragm blank so that the cutting blade can cut the diaphragm blank.

[0010] In the above technical solution, by setting a first driving mechanism to drive the cutter to approach or move away from the diaphragm blank, the cutter only comes into contact with and rubs against other parts when needed, which helps to reduce the wear of the cutter and extend its life.

[0011] As an optional technical solution in this application embodiment, the cutter is a circular cutter, and the first driving mechanism is further configured to drive the cutter to rotate around its own axis.

[0012] In the above technical solution, the first driving mechanism can also drive the cutter to rotate around its own axis. This allows the cutter to rotate actively, resulting in better cutting performance for some materials. During production, the ability to drive the cutter to rotate around its own axis can be selected based on the properties of the material, thus adapting to different material properties and reducing the risk of uncut edges.

[0013] As an optional technical solution in this application embodiment, the first driving mechanism includes a first mounting base, a second mounting base, a first driving member, and a second driving member. The first mounting base is adjustablely disposed on the first fixed base along the width direction. The first driving member connects the first mounting base and the second mounting base. The second driving member is disposed on the second mounting base. The cutter is connected to the second driving member. The first driving member is used to drive the second mounting base to move so that the cutter moves closer to or away from the diaphragm blank. The second driving member is used to drive the cutter to rotate around its own axis.

[0014] In the above technical solution, the first driving member and the second driving member can respectively realize the movement and rotation of the cutter to facilitate the cutting of the film blank. The first mounting base is adjustablely disposed on the first fixed base along the width direction. The first driving member, the second mounting base, the second driving member, and the cutter are all indirectly or directly connected to the first fixed base. In this way, only the position of the first fixed base in the width direction needs to be adjusted to adjust the position of the first driving member, the second mounting base, the second driving member, and the cutter in the width direction. Moreover, the relative positions of the first driving member, the second mounting base, the second driving member, and the cutter remain unchanged before and after adjustment, making the cutter position adjustment simple and convenient.

[0015] As an optional technical solution in this application embodiment, the first fixed seat is provided with a first fixed shaft, the first fixed shaft extends along the width direction, and the first mounting seat includes a first bushing, the first bushing is sleeved on the first fixed shaft, so as to realize that the position of the first mounting seat is adjustable along the width direction.

[0016] In the above technical solution, the first bushing is sleeved on the first fixed shaft, and the first bushing can move along the length direction of the first fixed shaft, thereby realizing that the position of the first mounting seat is adjustable along the width direction. This structure is simple and easy to adjust.

[0017] As an optional technical solution in this application embodiment, the first bushing is rotatably sleeved on the first fixed shaft around the axis of the first fixed shaft.

[0018] In the above technical solution, the first bushing can rotate around the first fixed axis to adjust the position of the cutter and the distance between the cutter and the diaphragm blank. In conjunction with the first drive mechanism, the position adjustment of the cutter can be more flexible and varied, thereby meeting more production needs.

[0019] As an optional technical solution in this application embodiment, the first fixed base is provided with a first fixed shaft, the first fixed shaft extends along the width direction, and the cutter unit includes a first bushing, the first bushing is sleeved on the first fixed shaft, so as to realize that the position of the cutter unit along the width direction is adjustable.

[0020] In the above technical solution, the first bushing is sleeved on the first fixed shaft, and the first bushing can move along the length direction of the first fixed shaft, thereby realizing that the position of the cutter unit is adjustable along the width direction. This structure is simple and easy to adjust.

[0021] As an optional technical solution in this application embodiment, the first bushing is rotatably sleeved on the first fixed shaft around the axis of the first fixed shaft.

[0022] In the above technical solution, the first bushing can rotate around the first fixed axis to adjust the position of the cutting unit. In this way, the cutting unit can move along the width direction and rotate around the first fixed axis, making the position adjustment more flexible and thus meeting more production needs.

[0023] As an optional technical solution in this application embodiment, the cutting mechanism further includes a first locking member, which has a first locking state and a first unlocking state. When the first locking member is in the first locking state, the first bushing is locked to the first fixed shaft. When the first locking member is in the first unlocking state, the first bushing can move relative to the first fixed shaft along the width direction or rotate around the axis of the first fixed shaft.

[0024] In the above technical solution, when the position of the cutting unit needs to be adjusted, the first locking member is placed in the first unlocked state, thereby allowing the cutting unit to move along the width direction or rotate around the first fixed axis. When the position of the cutting unit is adjusted, the first locking member is placed in the first locked state, thereby limiting the relative position of the first locking member and the first fixed axis, reducing the risk of the cutting unit moving relative to the first fixed axis during operation, which could lead to a deterioration in the cutting effect.

[0025] As an optional technical solution in this application embodiment, the cutting mechanism includes a plurality of cutting units, which are arranged sequentially along the width direction, and at least one of the cutting units located at both ends is used to cut the edge material.

[0026] In the above technical solution, at least one of the cutting units located at both ends along the width direction can cut off the edge material, thereby reducing or eliminating the impact of the edge material on the electrode performance, improving the electrode performance, and increasing the electrode yield. The remaining cutting units cut the diaphragm blank, so that one diaphragm blank can produce multiple diaphragms, which in turn can produce multiple electrodes, thus improving production efficiency.

[0027] As an optional technical solution in this application embodiment, the cutting mechanism includes a first driving mechanism and a cutting blade. The first driving mechanism is connected to the cutting blade and is configured to drive the cutting blade to move closer to or away from the diaphragm blank so that the cutting blade can cut the diaphragm blank.

[0028] In the above technical solution, by setting a first driving mechanism to drive the cutter to approach or move away from the diaphragm blank, the cutter only comes into contact with and rubs against other parts when needed, which helps to reduce the wear of the cutter and extend its life.

[0029] As an optional technical solution in this application embodiment, the cutting mechanism includes a first driving mechanism and a cutting blade. The first driving mechanism is connected to the cutting blade, and the cutting blade is a circular cutting blade. The first driving mechanism is configured to drive the cutting blade to rotate around its own axis.

[0030] In the above technical solution, by setting a first driving mechanism to drive the cutter to rotate around its own axis, the cutter can rotate actively, resulting in better cutting effect on some materials.

[0031] As an optional technical solution in this application embodiment, the cutting mechanism includes a cutting blade, and the angle between the cutting blade and the plane perpendicular to the width direction is α, satisfying: 0≤α≤45°, preferably, 0≤α≤15°.

[0032] In the above technical solutions, the angle between the cutter and the plane perpendicular to the width direction affects the thickness of the membrane edge. A larger thinned area results in a lower energy density in the manufactured battery. By limiting the angle between the cutter and the plane perpendicular to the width direction to 0–45°, a smaller thinned area at the membrane edge is beneficial for increasing the energy density of the manufactured battery. When α > 45°, the thinned area at the membrane edge is larger, resulting in a lower energy density in the manufactured battery. When 0 ≤ α ≤ 15°, the thinned area at the membrane edge is smaller, which is more conducive to increasing the energy density of the manufactured battery.

[0033] As an optional technical solution in this application embodiment, the cutting mechanism includes a cutting blade, the cutting blade having a first cutting edge for cutting, the thickness of the first cutting edge being H, satisfying: 0.01μm≤H≤10000μm, preferably, 0.01μm≤H≤1μm.

[0034] In the above technical solution, limiting the thickness of the first cutting edge to the range of 0.01–10000 μm results in a relatively sharp cutter, good cutting effect, and a long cutter life. When H < 0.01 μm, the thickness of the first cutting edge is too thin, making the cutter prone to wear and damage, and resulting in a short cutter life. When H > 10000 μm, the thickness of the first cutting edge ear is too thick, leading to lower sharpness and poor cutting effect. When 0.01 μm ≤ H ≤ 1 μm, the cutter is relatively sharp, achieving a good cutting effect, and also has a long cutter life.

[0035] As an optional technical solution in this application embodiment, the film forming mechanism includes multiple pressure rollers, and a roller gap is formed between two adjacent pressure rollers for material to pass through. Along the conveying direction of the film blank, the pressure roller located at the end of the multiple pressure rollers is the first pressure roller, and the cutting mechanism is configured to cut the film blank on the first pressure roller.

[0036] In the above technical solution, by setting multiple pressure rollers, the blank material can be gradually thinned and formed into a film. The degree of thinning each time is not too large, which helps to improve the uniformity and thickness consistency of the film blank. The cutting mechanism can cut the film blank on the first pressure roller without the need for an additional structure to support the film blank. This helps to reduce the number of parts in the electrode manufacturing device, simplify the structure of the electrode manufacturing device, and reduce the cost of the electrode manufacturing device.

[0037] As an optional technical solution in this application embodiment, the electrode manufacturing apparatus further includes a scraper mechanism, which is disposed downstream of the cutting mechanism and is used to peel the edge material off the film forming mechanism.

[0038] In the above technical solution, after the cutting mechanism cuts off the edge material, the edge material may adhere to the film forming mechanism, thus affecting the quality of the film produced subsequently. By setting up a scraper mechanism to scrape off the edge material adhering to the film forming mechanism, the risk of edge material adhering to the film forming mechanism is reduced, which is beneficial to improving the quality of the film produced subsequently, improving the performance of the electrode, and increasing the yield of the electrode.

[0039] As an optional technical solution in this application embodiment, the scraper mechanism includes a second fixed base and a scraper unit; the scraper unit is used to peel the edge material off the film forming mechanism, and the scraper unit is adjustablely positioned on the second fixed base along the width direction.

[0040] In the above technical solution, by adjusting the position of the scraper unit along the width direction on the first fixed base, the position of the scraper unit can be adjusted as needed during production, thereby scraping away as much edge material attached to the film forming mechanism as possible and reducing the impact of edge material on the film produced subsequently. Furthermore, the position of the scraper unit in the width direction can be adaptively adjusted according to the position of the cutting mechanism to meet different production needs.

[0041] As an optional technical solution in this application embodiment, the scraper unit includes a second driving mechanism and a scraper. The second driving mechanism is connected to the second fixed base and the scraper. The second driving mechanism is used to drive the scraper to move closer to or away from the edge material so as to peel the edge material off the film forming mechanism.

[0042] In the above technical solution, by setting a second driving mechanism to drive the scraper to move closer to or away from the edge material, the scraper only comes into contact with and rubs against other parts when needed, which helps to reduce the wear of the scraper and extend its life.

[0043] As an optional technical solution in this application embodiment, the second fixed base is provided with a second fixed shaft, the second fixed shaft extends along the width direction, the scraper unit includes a second bushing, the second drive mechanism connects the second bushing and the scraper, and the second bushing is sleeved on the second fixed shaft to realize that the position of the scraper unit is adjustable along the width direction.

[0044] In the above technical solution, the second bushing is fitted onto the second fixed shaft, and the second bushing can move along the length direction of the second fixed shaft, thereby realizing that the position of the scraper unit is adjustable along the width direction. This structure is simple and easy to adjust.

[0045] As an optional technical solution in this application embodiment, the second bushing is rotatably sleeved on the second fixed shaft around the axis of the second fixed shaft.

[0046] In the above technical solution, the second bushing can rotate around the second fixed axis to adjust the position of the scraper unit. In this way, the scraper unit can move along the width direction and rotate around the second fixed axis, making the position adjustment more flexible and thus meeting more production needs.

[0047] As an optional technical solution in this application embodiment, the scraper mechanism further includes a second locking member, which has a second locking state and a second unlocking state. When the second locking member is in the second locking state, the second bushing is locked to the second fixed shaft. When the second locking member is in the second unlocking state, the second bushing can move relative to the second fixed shaft along the width direction or rotate around the axis of the second fixed shaft.

[0048] In the above technical solution, when the position of the scraper unit needs to be adjusted, the second locking member is placed in the second unlocked state, thereby allowing the second bushing to move along the width direction or rotate around the second fixed shaft. When the position of the scraper unit is adjusted, the second locking member is placed in the second locked state, thereby limiting the relative position of the second locking member and the second fixed shaft, reducing the risk that the scraper unit will move relative to the second fixed shaft during operation, resulting in a deterioration in the effect of peeling off the edge material.

[0049] As an optional technical solution in this application embodiment, the scraper mechanism includes a second drive mechanism and a scraper. The second drive mechanism is connected to the scraper and is configured to drive the scraper to approach or move away from the film blank to peel the edge material off the film forming mechanism.

[0050] In the above technical solution, by setting a second driving mechanism to drive the scraper to move closer to or away from the edge material, the scraper only comes into contact with and rubs against other parts when needed, which helps to reduce the wear of the scraper and extend its life.

[0051] As an optional technical solution in this application embodiment, the scraper mechanism includes a scraper, the scraper having a first receiving surface, a first backing surface, and a second cutting edge, the second cutting edge connecting the first receiving surface and the first backing surface, the first receiving surface being used to contact the edge material, the first backing surface being used to contact the film forming mechanism, the second cutting edge intersecting with the first receiving surface to form a first guiding edge, the first backing surface having a first side extending along the width direction, the distance between the first guiding edge and the first side gradually decreasing along a first direction, the first direction being parallel to the width direction and pointing along the film towards the edge material.

[0052] In the above technical solution, by gradually reducing the distance between the first guide edge and the first edge along the first direction, when the scraper scrapes the material, the edge material will move away from the membrane along the first guide edge, thereby reducing the impact of the edge material on the membrane.

[0053] As an optional technical solution in this application embodiment, the first guide edge extends along an arc trajectory.

[0054] In the above technical solution, the first guide edge extends along an arc trajectory, which facilitates the discharge of the edge material and prevents it from accumulating.

[0055] As an optional technical solution in this application embodiment, the cutting mechanism includes multiple cutting blades, which are spaced apart along the width direction, and the scraping mechanism includes multiple scrapers, which are arranged corresponding to the cutting blades.

[0056] In the above technical solution, multiple cutters are set up. These cutters can trim the edge material or cut a single film blank into multiple film sheets. Waste generated at each cutting position of the cutter may adhere to the film forming mechanism. Therefore, the cutters are set up with corresponding scrapers to facilitate the removal of edge material or waste adhering to the film forming mechanism.

[0057] As an optional technical solution in this application embodiment, along the width direction, the scrapers located at both ends of the plurality of scrapers are first scrapers. The first scraper has a first receiving surface, a first backing surface, and a second cutting edge. The second cutting edge connects the first receiving surface and the first backing surface. The first receiving surface is used to contact the edge material, and the first backing surface is used to contact the film forming mechanism. The second cutting edge intersects with the first receiving surface to form a first guiding edge. The first backing surface has a first side extending along the width direction. The distance between the first guiding edge and the first side gradually decreases along a first direction. The first direction is parallel to the width direction and points along the film towards the edge material.

[0058] In the above technical solution, the first scraper is one of the multiple scrapers located at both ends in the width direction. The first scraper is used to scrape off the edge material attached to the film forming mechanism. By gradually reducing the distance between the first guide edge and the first edge along the first direction, when the scraper scrapes the material, the edge material will move away from the film along the first guide edge, thereby reducing the impact of the edge material on the film.

[0059] As an optional technical solution in this application embodiment, along the width direction, the scrapers located at both ends of the plurality of scrapers are first scrapers, and the scraper located between the two first scrapers is a second scraper. The second scraper has a second receiving surface, a second backing surface, and a third cutting edge. The third cutting edge connects the second receiving surface and the second backing surface. The second receiving surface is used to contact the edge material, and the second backing surface is used to contact the film forming mechanism. The third cutting edge intersects with the second receiving surface to form a second guiding edge. The second backing surface has a second side extending along the width direction. The distance between the second guiding edge and the second side gradually increases from the middle position of the second side to both ends.

[0060] In the above technical solution, the second scraper is a scraper located between the two first scrapers in the width direction among multiple scrapers. The second scraper is used to scrape off the waste material attached to the film forming mechanism. Film sheets are provided on both sides of the second scraper in the width direction. Therefore, by gradually increasing the distance between the second guide edge and the second side from the middle position to both ends of the second side, when the second scraper scrapes the material, the waste material will move along the two ends of the second guide edge towards the middle of the second guide edge, thereby reducing the impact of the waste material on the film sheets.

[0061] As an optional technical solution in this application embodiment, the film forming mechanism includes multiple pressure rollers, and a roller gap is formed between two adjacent pressure rollers for material to pass through. Along the conveying direction of the film blank, the pressure roller located at the end of the multiple pressure rollers is the first pressure roller, and the scraper mechanism is used to peel the edge material off the first pressure roller.

[0062] In the above technical solution, by setting multiple pressure rollers, the blank material can be gradually thinned and formed into a film. The degree of thinning each time is not too large, which helps to improve the uniformity and thickness consistency of the film blank. The scraper mechanism can peel off the edge material attached to the first pressure roller, which is conducive to realizing continuous production of electrode sheets.

[0063] As an optional technical solution in this application embodiment, the cutting mechanism includes a cutting blade, the surface of which is provided with an anti-fouling coating; and / or the electrode manufacturing apparatus further includes a scraper mechanism, the scraper mechanism being disposed downstream of the cutting mechanism, the scraper mechanism including a scraper, the scraper being used to peel the edge material off the film forming mechanism, the surface of the scraper being provided with an anti-fouling coating.

[0064] In the above technical solution, by applying an anti-fouling coating to the surface of the cutter, the risk of edge material adhering to the cutter can be reduced, thereby improving the cutting effect of the cutter. Similarly, by applying an anti-fouling coating to the surface of the scraper, the risk of edge material adhering to the scraper can be reduced, thereby improving the scraper's peeling effect.

[0065] As an optional technical solution in this application embodiment, the anti-fouling coating includes at least one of a nano anti-fouling fluorinated coating, a graphene ceramic composite coating, and a diamond-like carbon coating.

[0066] Among the above technical solutions, the nano-anti-fouling fluorinated coating, graphene ceramic composite coating and diamond-like coating have good anti-fouling effects and can reduce the risk of edge material adhering to the cutting blade and / or scraper.

[0067] As an optional technical solution in this application embodiment, the cutting mechanism includes a cutting blade, the material of which includes at least one of tool steel, cemented carbide, plastic, ceramic, diamond, and cubic boron nitride; and / or the electrode manufacturing apparatus further includes a scraper mechanism, the scraper mechanism being disposed downstream of the cutting mechanism, the scraper mechanism including a scraper, the scraper being used to peel the edge material off the film forming mechanism, the scraper being made of at least one of tool steel, cemented carbide, plastic, ceramic, diamond, and cubic boron nitride.

[0068] In the above technical solution, the material of the cutter includes at least one of tool steel, cemented carbide, plastic, ceramic, diamond, and cubic boron nitride, which gives the cutter high strength, resulting in better cutting performance and a longer lifespan. The material of the scraper includes at least one of tool steel, cemented carbide, plastic, ceramic, diamond, and cubic boron nitride, giving the scraper high strength, resulting in better peeling performance and a longer lifespan.

[0069] As an optional technical solution in this application embodiment, the electrode manufacturing apparatus includes a material distribution mechanism, which is disposed downstream of the cutting mechanism. The material distribution mechanism is used to cause the edge material cut by the cutting mechanism to move away from the film along the width direction.

[0070] In the above technical solution, after the cutting mechanism cuts the edge material, the gap between the edge material and the film is small, making it difficult to separate the edge material from the film forming mechanism. By setting a material separating mechanism, the edge material cut by the cutting mechanism is directed away from the film in the width direction, making it easier to separate the edge material from the film forming mechanism. In addition, when the scraper mechanism peels the edge material from the film forming mechanism, the guide path of the scraper mechanism for the edge material is shortened, making it less likely for the edge material to accumulate in the scraper mechanism.

[0071] As an optional technical solution in this application embodiment, the material separating mechanism includes a third driving mechanism and a material separating blade. The third driving mechanism is connected to the material separating blade and is used to drive the material separating blade to extend into the gap between the edge material and the film, so that the edge material cut by the cutting mechanism moves away from the film along the width direction.

[0072] In the above technical solution, by setting a third driving mechanism to drive the dividing blade to extend into the gap between the edge material and the diaphragm, the dividing blade only comes into contact with other components when needed, which helps to reduce the wear of the dividing blade and extend its service life.

[0073] As an optional technical solution in this application embodiment, the separating blade includes a first surface, a second surface, a connecting surface, and a blade tip. The blade tip is used to insert into the gap between the edge material and the diaphragm. The first surface is used to contact the edge material, the second surface is used to contact the diaphragm, the connecting surface connects the first surface and the second surface, the first surface intersects the connecting surface at a third side, the second surface intersects the connecting surface at a fourth side, and both the third and fourth sides extend to the blade tip. The distance between the third and fourth sides along the width direction gradually increases from the end of the fourth side closer to the blade tip to the end away from the blade tip.

[0074] In the above technical solution, by making the distance between the third side and the fourth side gradually increase from the end of the fourth side closer to the blade tip to the end away from the blade tip, after the blade tip is inserted into the gap between the edge material and the diaphragm, as the diaphragm blank moves, the edge material will gradually move away from the diaphragm under the guidance of the second side, thereby widening the gap between the edge material and the diaphragm.

[0075] As an optional technical solution in this application embodiment, the material distribution mechanism includes a third fixed base and a material distribution unit; the material distribution unit is used to make the edge material cut by the cutting mechanism move away from the film along the width direction, and the material distribution unit is adjustablely positioned on the third fixed base along the width direction.

[0076] In the above technical solution, by adjusting the position of the material distribution unit along the width direction on the third fixed base, the position of the material distribution unit can be adjusted as needed during production, so that the edge material cut by the cutting mechanism moves away from the film along the width direction, facilitating the separation of the edge material from the film forming mechanism. Furthermore, the position of the material distribution unit in the width direction can be adaptively adjusted according to the position of the cutting mechanism to meet different production needs.

[0077] As an optional technical solution in this application embodiment, the material separating unit includes a third driving mechanism and a material separating blade. The third driving mechanism is connected to the third fixed base and the material separating blade. The third driving mechanism is used to drive the material separating blade to extend into the gap between the edge material and the film, so that the edge material cut by the cutting mechanism moves away from the film along the width direction.

[0078] In the above technical solution, by setting a third driving mechanism to drive the dividing blade to extend into the gap between the edge material and the diaphragm, the dividing blade only comes into contact with other components when needed, which helps to reduce the wear of the dividing blade and extend its service life.

[0079] As an optional technical solution in this application embodiment, the third fixed seat is provided with a third fixed shaft, the third fixed shaft extends along the width direction, the material distribution unit includes a third bushing, the third drive mechanism connects the third bushing and the material distribution knife, and the third bushing is sleeved on the third fixed shaft to realize that the position of the material distribution unit is adjustable along the width direction.

[0080] In the above technical solution, the third bushing is fitted onto the third fixed shaft. The third bushing can move along the length direction of the third fixed shaft, thereby making the position of the material distribution unit adjustable along the width direction. This setup is simple and easy to adjust.

[0081] As an optional technical solution in this application embodiment, the third shaft sleeve is rotatably sleeved on the third fixed shaft around the axis of the third fixed shaft.

[0082] In the above technical solution, the third bushing can rotate around the third fixed axis to adjust the position of the material distribution unit. In this way, the material distribution unit can move along the width direction and rotate around the third fixed axis, making the position adjustment more flexible and thus meeting more production needs.

[0083] As an optional technical solution in this application embodiment, the material distribution mechanism further includes a third locking member, which has a third locking state and a third unlocking state. When the third locking member is in the third locking state, the third bushing is locked to the third fixed shaft. When the third locking member is in the third unlocking state, the third bushing can move relative to the third fixed shaft along the width direction or rotate around the axis of the third fixed shaft.

[0084] In the above technical solution, when the position of the material distribution unit needs to be adjusted, the third locking member is placed in the third unlocked state, thereby allowing the third bushing to move along the width direction or rotate around the third fixed shaft. When the position of the material distribution unit is adjusted, the third locking member is placed in the third locked state, thereby restricting the relative position of the third locking member and the third fixed shaft, reducing the risk that the material distribution effect will deteriorate due to relative movement between the material distribution unit and the third fixed shaft during operation.

[0085] As an optional technical solution in this application embodiment, the film forming mechanism includes a rolling mechanism, which is used to roll the material to thin the material into a film.

[0086] In the above technical solution, the material is thinned and formed into a film blank by using a roller pressing mechanism to press the material, which has high efficiency and good uniformity.

[0087] As an optional technical solution in this application embodiment, the roller pressing mechanism includes multiple pressure rollers, and a roller pressing gap is formed between two adjacent pressure rollers for material to pass through.

[0088] In the above technical solution, by setting multiple pressure rollers, the material can be gradually thinned and formed into a film blank. The degree of thinning each time is not too large, which is beneficial to improving the uniformity and thickness consistency of the film blank.

[0089] As an optional technical solution in this application embodiment, along the conveying direction of the film blank, the pressure roller located at the end of the plurality of pressure rollers is the first pressure roller, the composite mechanism includes a composite roller, and a composite gap is formed between the composite roller and the first pressure roller for the film and the substrate to pass through.

[0090] In the above technical solution, the composite roller and the first pressure roller work together to roll the film and the substrate to composite the film and the substrate into an electrode. The first pressure roller serves as both a component for rolling the material and a component for combining the film and the substrate. One component achieves two functions, which simplifies the structure of the electrode manufacturing device and reduces the cost of the electrode manufacturing device. Attached Figure Description

[0091] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0092] Figure 1 This is a schematic diagram of the structure of a diaphragm in a related technology;

[0093] Figure 2 Schematic block diagram of an electrode manufacturing apparatus provided in some embodiments of this application;

[0094] Figure 3 This is a schematic diagram of the structure of an electrode manufacturing apparatus provided in some embodiments of this application;

[0095] Figure 4 This is a schematic diagram of the structure of the cutting mechanism provided in some embodiments of this application;

[0096] Figure 5 A front view schematic diagram of a cutting mechanism provided for other embodiments of this application;

[0097] Figure 6 Schematic diagrams of the cutting mechanism provided in some embodiments of this application;

[0098] Figure 7 A front view schematic diagram of a cutting mechanism provided in some embodiments of this application;

[0099] Figure 8 Schematic diagram of the blade tilt setting provided in some embodiments of this application;

[0100] Figure 9 for Figure 5 A magnified view of position A in the middle;

[0101] Figure 10 Schematic diagrams of the electrode manufacturing apparatus provided in other embodiments of this application;

[0102] Figure 11 This is a schematic diagram of the scraper mechanism provided in some embodiments of this application;

[0103] Figure 12 for Figure 11 A magnified view of position B in the middle;

[0104] Figure 13 This is a schematic diagram of the scraper mechanism provided in some other embodiments of this application;

[0105] Figure 14 for Figure 13 A magnified view of position C in the middle;

[0106] Figure 15 Schematic diagram of the structure of an electrode manufacturing apparatus provided in some embodiments of this application;

[0107] Figure 16 This is a schematic diagram of the material dispensing mechanism provided in some embodiments of this application;

[0108] Figure 17 for Figure 16 A magnified view of position D in the middle;

[0109] Figure 18 Schematic diagrams of the material dispensing mechanism provided in other embodiments of this application;

[0110] Figure 19 Schematic diagram of the structure of the electrode manufacturing apparatus provided in some further embodiments of this application;

[0111] Figure 20 This is a schematic diagram showing the connection between the cutting mechanism and the material distribution mechanism provided in some embodiments of this application;

[0112] Figure 21 This is a schematic diagram showing the connection between the cutting mechanism and the material distribution mechanism provided in other embodiments of this application.

[0113] Icons: 10-Electrode manufacturing apparatus; 100-Film forming mechanism; 110-Pressure roller; 120-First pressure roller; 200-Cutter mechanism; 210-First fixed seat; 211-First fixed shaft; 220-Cutter unit; 221-First drive mechanism; 2211-First mounting seat; 22111-First bushing; 2212-First drive component; 2213-Second mounting seat; 2214-Second drive component; 222-Cutter; 2221-First blade; 223-First locking component; 300-Composite mechanism; 310-Composite roller; 400-Scraper mechanism; 410-Second fixed seat; 411-Second fixed shaft; 420-Scraper unit; 421-Second drive mechanism; 4211-Third mounting seat; 42111-Second bushing; 4212-Third drive component; 422-Scraper; 4221-First receiving surface ; 4222-First backing surface; 4223-First guide edge; 4224-First edge; 4225-First scraper; 4226-Second scraper; 42261-Second backing surface; 4227-Second receiving surface; 4228-Second guide edge; 4229-Second edge; 423-Second locking element; 500-Distribution mechanism; 510-Third fixed seat; 511-Third fixed shaft; 520-Distribution unit; 521-Third drive mechanism; 5211-Fourth mounting base; 52111-Third bushing; 5212-Fourth drive component; 522-Separating blade; 5221-First surface; 5222-Connecting surface; 5223-Blade tip; 5224-Third side; 5225-Fourth side; 523-Third locking component; 600-Diaphragm blank; 610-Edge material; 700-Diaphragm; 800-Substrate; 900-Electrode. Detailed Implementation

[0114] 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.

[0115] 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 pertains; the terminology used herein 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 specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0116] In the description of the embodiments of this application, technical terms such as "first" and "second" 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.

[0117] 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.

[0118] 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 have an "or" relationship.

[0119] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0120] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" 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 are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0121] 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. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0122] Currently, judging from market trends, battery applications are becoming increasingly widespread. Batteries are not only used in energy storage systems such as 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 military equipment and aerospace. With the continuous expansion of battery applications, market demand is also constantly increasing.

[0123] A battery includes electrode assemblies, which are the components where electrochemical reactions occur. Electrode assemblies are mainly composed of positive and negative electrode sheets wound or stacked. Electrode manufacturing is primarily divided into wet and dry processes. However, electrodes manufactured using dry processes often have inferior performance.

[0124] When manufacturing electrode sheets using dry process technology, active material powder and granules are fed to the surface of rollers, directly pressing the powder and granules into a film. This film is then laminated with a substrate to form the electrode sheet. Please refer to [reference needed]. Figure 1 , Figure 1 This is a schematic diagram of the structure of a membrane fabricated in related technologies. At least one end of the membrane fabricated in related technologies is not neat along its width, exhibiting wavy edges, serrated edges, burrs, etc. The presence of wavy edges, serrated edges, and burrs severely affects the performance of the electrode, resulting in poor electrode performance.

[0125] In view of this, embodiments of this application provide an electrode manufacturing apparatus, which includes a film forming mechanism, a cutting mechanism, and a laminating mechanism. The film forming mechanism is used to form materials into a film blank. The cutting mechanism is disposed downstream of the film forming mechanism and is used to cut at least one edge of the film blank along its width direction to form a film. The laminating mechanism is disposed downstream of the cutting mechanism and is used to laminate the film with a substrate to form an electrode.

[0126] A membrane forming mechanism can form materials into membrane blanks. The membrane blank has edge material located on at least one side along its width direction; this edge material includes wavy edges, serrated edges, burrs, etc. The presence of edge material affects the performance of the electrode. A cutting mechanism is used to cut the edge material of the membrane blank to form a membrane. A laminating mechanism then combines the membrane with a substrate to form an electrode. Electrodes manufactured using this device reduce or eliminate the impact of edge material on electrode performance by using a cutting mechanism to cut the edge material, thus improving electrode performance and increasing the yield rate.

[0127] The technical solutions described in the embodiments of this application are applicable to the manufacture of electrode sheets.

[0128] Please refer to Figure 2 and Figure 3 , Figure 2This is a schematic block diagram of an electrode manufacturing apparatus 10 provided in some embodiments of this application. Figure 3 This is a schematic diagram of the structure of an electrode manufacturing apparatus 10 provided in some embodiments of this application. Embodiments of this application provide an electrode manufacturing apparatus 10, which includes a film forming mechanism 100, a cutting mechanism 200, and a composite mechanism 300. The film forming mechanism 100 is used to form materials into a film blank 600. The cutting mechanism 200 is disposed downstream of the film forming mechanism 100 and is used to cut at least one edge piece 610 of the film blank 600 along its width direction to form a film 700. The composite mechanism 300 is disposed downstream of the cutting mechanism 200 and is used to composite the film 700 with a substrate 800 to form an electrode 900.

[0129] The membrane forming mechanism 100 is a mechanism for forming materials into a membrane blank 600. The membrane forming mechanism 100 includes, but is not limited to, a roll forming mechanism and an extrusion forming mechanism. The materials may include active material powder and active material particles. The materials used for the positive and negative electrode sheets differ; for example, the positive electrode sheet may contain lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide. The negative electrode sheet may contain carbon or silicon.

[0130] The cutting mechanism 200 is used to cut at least one edge piece 610 of the diaphragm blank 600 along its width direction. Generally, the diaphragm blank 600 has edge pieces 610 at both ends along its width direction. The edge pieces 610 include wavy edges, serrated edges, burrs, etc. By setting the cutting mechanism 200 to cut the edge pieces 610, the edge of the diaphragm blank 600 is shaped, making the edge of the diaphragm blank 600 neat, basically without wavy edges and serrated edges, and the burrs meet the design requirements. The portion of the diaphragm blank 600 after at least one edge piece 610 has been cut off by the cutting mechanism 200 forms the diaphragm 700.

[0131] The composite mechanism 300 is a mechanism that combines the diaphragm 700 and the substrate 800 to form the electrode 900. From the perspective of the electrode 900, the diaphragm 700 is the active material layer of the electrode 900, and the substrate 800 is the current collector of the electrode 900. The substrate 800 of the positive electrode can be aluminum. The substrate 800 of the negative electrode can be copper.

[0132] The membrane forming mechanism 100 can form materials into a membrane blank 600. The membrane blank 600 has an edge material 610 located on at least one side of the membrane blank 600 along its width direction. The edge material 610 includes a wavy edge, a serrated edge, burrs, etc. The presence of the edge material 610 affects the performance of the electrode 900. The edge material 610 of the membrane blank 600 is cut by a cutting mechanism 200 to form a membrane 700. The membrane 700 is then laminated with a substrate 800 by a laminating mechanism 300 to form the electrode 900. The electrode 900 manufactured using this electrode manufacturing apparatus 10 reduces or eliminates the impact of the edge material 610 on the performance of the electrode 900 by cutting the edge material 610 using the cutting mechanism 200, thereby improving the performance of the electrode 900 and increasing the yield of the electrode 900.

[0133] Please refer to Figure 4 and Figure 5 , Figure 4 This is a schematic diagram of the structure of the cutting mechanism 200 provided in some embodiments of this application. Figure 5 This is a front view schematic diagram of a cutting mechanism 200 provided for other embodiments of this application. In some embodiments, the cutting mechanism 200 includes a first fixed base 210 and a cutting unit 220, the cutting unit 220 being used to cut the film blank 600. Along the width direction, the cutting unit 220 is adjustablely positioned on the first fixed base 210.

[0134] The first mounting base 210 is a component used to mount the cutting unit 220. When the electrode manufacturing apparatus 10 is in operation, the position of the first mounting base 210 can be fixed relative to the ground. The first mounting base 210 can be fixed to the ground or the frame, or it can be detachably connected to the ground or the frame.

[0135] The cutting unit 220 is a component used for cutting the diaphragm blank 600. At least one edge piece 610 of the diaphragm blank 600 along its width direction can be cut by the cutting unit 220. The cutting unit 220 is adjustablely positioned on the first fixed base 210 along its width direction. Please refer to... Figure 4 The width direction can be the X direction as shown in the figure.

[0136] "The cutter unit 220 is adjustable in position to the first fixed base 210 along the width direction" means that the relative position of the cutter unit 220 and the first fixed base 210 can be adjusted in some way. For example, the cutter unit 220 can slide with the first fixed base 210, and the relative position of the cutter unit 220 and the first fixed base 210 can be changed by sliding the cutter unit 220. Alternatively, the first fixed base 210 may have multiple mounting positions, and the cutter unit 220 can be detachably connected to one of these mounting positions, achieving positional adjustment by changing different mounting positions.

[0137] By adjusting the position of the cutting unit 220 along the width direction on the first fixed base 210, the position of the cutting unit 220 can be adjusted as needed during production, thereby cutting off as much edge material 610 as possible and reducing the impact of edge material 610 on the performance of the electrode 900. In addition, by adjusting the position of the cutting unit 220 in the width direction, it can also be used to manufacture electrode 900s of different widths, improving the adaptability of the electrode manufacturing apparatus 10.

[0138] Please refer to Figure 4 and Figure 5 In some embodiments, the cutting unit 220 includes a first drive mechanism 221 and a cutter 222, the first drive mechanism 221 being connected to the first fixed base 210 and the cutter 222. The first drive mechanism 221 is configured to drive the cutter 222 toward or away from the diaphragm blank 600 so that the cutter 222 can cut the diaphragm blank 600.

[0139] The first drive mechanism 221 is used to drive the cutter 222 to move closer to or away from the diaphragm blank 600. The first drive mechanism 221 can drive the cutter 222 to move, thereby causing the cutter 222 to move closer to or away from the diaphragm blank 600. The first drive mechanism 221 can also drive the cutter 222 to rotate, thereby causing the cutter 222 to move closer to or away from the diaphragm blank 600.

[0140] The cutter 222 is a tool used to cut the diaphragm blank 600. The shape of the cutter 222 is not limited; for example, it can be circular, elongated, arc-shaped, trapezoidal, or disc-shaped. When the cutter 222 is close to the diaphragm blank 600, it operates, cutting off the edge material 610 of the diaphragm blank 600, resulting in a neat edge for the diaphragm 700. When the cutter 222 is away from the diaphragm blank 600, it does not operate.

[0141] By setting the first drive mechanism 221 to drive the cutter 222 to approach or move away from the diaphragm blank 600, the cutter 222 only comes into contact with and rubs against other parts when needed, which helps to reduce the wear of the cutter 222 and extend its life.

[0142] Please refer to Figure 6 and Figure 7 , Figure 6 This is a schematic diagram of the structure of a cutting mechanism 200 provided in some embodiments of this application. Figure 7 This is a front view schematic diagram of a cutting mechanism 200 provided in some embodiments of this application. In some embodiments, the cutter 222 is a circular cutter, and the first drive mechanism 221 is further configured to drive the cutter 222 to rotate about its own axis.

[0143] The cutter 222 can be disc-shaped or ring-shaped. The cutter 222 has an axis passing through the center of the circle, and the first drive mechanism 221 can drive the cutter 222 to rotate around its axis, thereby improving the cutting effect of the cutter 222.

[0144] The first drive mechanism 221 can also drive the cutter 222 to rotate around its own axis. This allows the cutter 222 to rotate actively, resulting in better cutting of some materials. During production, the drive mechanism 221 can be adjusted based on the properties of the material to drive the cutter 222 to rotate around its own axis, thus adapting to different material properties and reducing the risk of uncut scrap 610. For example, for the membrane blank 600 formed from positive electrode material, the first drive mechanism 221 does not need to drive the cutter 222 to rotate; simply having the cutter 222 near the membrane blank 600 as it moves along the conveying direction is sufficient to achieve a good cutting effect. However, for the membrane blank 600 formed from negative electrode material, the first drive mechanism 221 can drive the cutter 222 to rotate. In this case, having the cutter 222 near the membrane blank 600 will produce a good cutting effect.

[0145] Please refer to Figure 6 and Figure 7 In some embodiments, the first drive mechanism 221 includes a first mounting base 2211, a second mounting base 2213, a first drive member 2212, and a second drive member 2214. The first mounting base 2211 is adjustablely positioned on the first fixed base 210 along its width. The first drive member 2212 connects the first mounting base 2211 and the second mounting base 2213, the second drive member 2214 is disposed on the second mounting base 2213, and the cutter 222 is connected to the second drive member 2214. The first drive member 2212 drives the second mounting base 2213 to move, so that the cutter 222 approaches or moves away from the diaphragm blank 600. The second drive member 2214 drives the cutter 222 to rotate about its own axis.

[0146] The first mounting base 2211 serves as the foundation for supporting the second mounting base 2213, the first drive member 2212, the second drive member 2214, and the cutter 222. The first mounting base 2211 is adjustable in position along the width direction on the first fixed base 210. By adjusting the position of the first mounting base 2211 in the width direction, the positions of the second mounting base 2213, the first drive member 2212, the second drive member 2214, and the cutter 222 in the width direction can be changed as a whole.

[0147] The first drive member 2212 connects to the first mounting base 2211 and the second mounting base 2213. When the first drive member 2212 is activated, it drives the second mounting base 2213, the second drive member 2214, and the cutter 222 to move as a whole, thereby causing the cutter 222 to move closer to or further away from the diaphragm blank 600. The first drive member 2212 may include a linear drive member, the mounting end of which may be fixed to the first mounting base 2211, and the output end of which may be fixed to the second mounting base 2213. When the first drive member 2212 extends, the second mounting base 2213, the second drive member 2214, and the cutter 222 move closer to the diaphragm blank 600 as a whole. When the first drive member 2212 retracts, the second mounting base 2213, the second drive member 2214, and the cutter 222 move further away from the diaphragm blank 600 as a whole. The linear drive member may be a linear electric cylinder, a linear pneumatic cylinder, a linear hydraulic cylinder, etc. Of course, the first driving component 2212 may also include a rotation driving unit and a first transmission unit. The rotation driving unit outputs rotational motion, and the first transmission unit converts the rotational motion output by the rotation driving unit into linear motion of the second mounting base 2213, the second driving component 2214, and the cutter 222. The rotation driving unit can be an electric motor, an internal combustion engine, etc. The first transmission unit can be a crank-slider mechanism, a lead screw-nut mechanism, etc.

[0148] The second drive unit 2214 connects the cutter 222 and the second mounting base 2213. The second drive unit 2214 can drive the cutter 222 to rotate. The second drive unit 2214 may include a rotary drive unit, the mounting end of which can be fixed to the second mounting base 2213, and the output end of which is connected to the cutter 222. The rotary drive unit can be an electric motor, an internal combustion engine, etc. Alternatively, the second drive unit 2214 may also include a linear drive unit and a second transmission unit. The linear drive unit outputs linear motion, and the second transmission unit converts the linear motion output by the linear drive unit into rotation of the cutter 222. The linear drive unit can be a linear electric cylinder, a linear pneumatic cylinder, a linear hydraulic cylinder, etc. The second transmission unit can be a crank-slider mechanism, a gear-rack mechanism, etc.

[0149] It should be noted that the first drive unit 2212 can be detachably connected to the second mounting base 2213, and the cutter 222 can be detachably connected to the second mounting base 2213, so as to facilitate the removal and replacement of the cutter 222 as needed.

[0150] The first driving member 2212 and the second driving member 2214 can respectively realize the movement and rotation of the cutter 222 to facilitate the cutting of the film blank 600. The first mounting base 2211 is adjustablely disposed on the first fixed base 210 along the width direction. The first driving member 2212, the second mounting base 2213, the second driving member 2214 and the cutter 222 are all indirectly or directly connected to the first fixed base 210. In this way, only the position of the first fixed base 210 in the width direction needs to be adjusted to adjust the position of the first driving member 2212, the second mounting base 2213, the second driving member 2214 and the cutter 222 in the width direction. Moreover, the relative positions of the first driving member 2212, the second mounting base 2213, the second driving member 2214 and the cutter 222 remain unchanged before and after adjustment, making the position adjustment of the cutter 222 simple and convenient.

[0151] Please refer to Figure 6 and Figure 7 In some embodiments, the first fixed base 210 is provided with a first fixed shaft 211, which extends along the width direction. The first mounting base 2211 includes a first bushing 22111, which is sleeved on the first fixed shaft 211 to make the position of the first mounting base 2211 adjustable along the width direction.

[0152] The first fixed shaft 211 is a shaft structure extending along the width direction. In other words, the length direction of the first fixed shaft 211 is parallel to the width direction of the diaphragm blank 600.

[0153] The first bushing 22111 is part of the first mounting base 2211. The first bushing 22111 is sleeved on the first fixed shaft 211, thereby allowing the first bushing 22111 to move along the length direction of the first fixed shaft 211, so as to realize the position adjustment of the first mounting base 2211 along the width direction. Here, it can also be understood that the first mounting base 2211 is sleeved on the first fixed shaft 211, thereby realizing the position adjustment of the first mounting base 2211 along the width direction.

[0154] The first bushing 22111 is sleeved on the first fixed shaft 211. The first bushing 22111 can move along the length direction of the first fixed shaft 211, thereby making the position of the first mounting base 2211 adjustable along the width direction. This structure is simple and easy to adjust.

[0155] Please refer to Figure 6 and Figure 7 In some embodiments, the first bushing 22111 is rotatably fitted onto the first fixed shaft 211 about the axis of the first fixed shaft 211.

[0156] The first bushing 22111 is sleeved on the first fixed shaft 211. The first bushing 22111 can move along the length direction of the first fixed shaft 211. At the same time, the first bushing 22111 can also rotate around the first fixed shaft 211.

[0157] The first bushing 22111 can rotate around the first fixed shaft 211 to adjust the position of the cutter 222 and the distance between the cutter 222 and the diaphragm blank 600. In conjunction with the first drive mechanism 221, the position adjustment of the cutter 222 can be more flexible and varied, thereby meeting more production needs.

[0158] Please refer to Figure 6 and Figure 7 In some embodiments, the first fixed base 210 is provided with a first fixed shaft 211, which extends along the width direction. The cutter unit 220 includes a first bushing 22111, which is sleeved on the first fixed shaft 211 to realize the position adjustment of the cutter unit 220 along the width direction.

[0159] The first bushing 22111 is part of the cutter unit 220. The first bushing 22111 is sleeved on the first fixed shaft 211, thereby allowing the first bushing 22111 to move along the length direction of the first fixed shaft 211, so as to realize the position adjustment of the cutter unit 220 along the width direction. Here, it can also be understood that the cutter unit 220 is sleeved on the first fixed shaft 211, thereby realizing the position adjustment of the cutter unit 220 along the width direction.

[0160] The first bushing 22111 is sleeved on the first fixed shaft 211. The first bushing 22111 can move along the length direction of the first fixed shaft 211, thereby realizing that the position of the cutter unit 220 is adjustable along the width direction. This structure is simple and easy to adjust.

[0161] Please refer to Figure 6 and Figure 7 In some embodiments, the first bushing 22111 is rotatably fitted onto the first fixed shaft 211 about the axis of the first fixed shaft 211.

[0162] The first bushing 22111 can rotate around the first fixed shaft 211 to adjust the position of the cutter unit 220. In this way, the cutter unit 220 can move along the width direction and rotate around the first fixed shaft 211, making the position adjustment more flexible and thus meeting more production needs.

[0163] Please refer to Figure 6 and Figure 7In some embodiments, the cutting mechanism 200 further includes a first locking member 223, which has a first locked state and a first unlocked state. When the first locking member 223 is in the first locked state, the first bushing 22111 is locked to the first fixed shaft 211. When the first locking member 223 is in the first unlocked state, the first bushing 22111 can move relative to the first fixed shaft 211 in the width direction or rotate about the axis of the first fixed shaft 211.

[0164] The first locking member 223 has a first locked state and a first unlocked state, and the first locked state and the first unlocked state can be switched. In the first locked state, the first locking member 223 can lock the first bushing 22111 to the first fixed shaft 211. At this time, the first bushing 22111 can neither rotate nor move relative to the first fixed shaft 211. In the first unlocked state, the first locking member 223 cannot lock the first bushing 22111 to the first fixed shaft 211. At this time, the first bushing 22111 can both rotate and move relative to the first fixed shaft 211.

[0165] Optionally, the first locking element 223 is a screw, which is threadedly connected to the first bushing 22111. By rotating the screw in the forward direction, the screw extends and abuts against the first fixed shaft 211, at which point the first locking element 223 is in a first locked state. By rotating the screw in the reverse direction, the screw exits the threaded hole and no longer abuts against the first fixed shaft 211, at which point the first locking element 223 is in a first unlocked state.

[0166] When the position of the scraper unit 420 needs to be adjusted, the second locking member 423 is placed in the second unlocked state, thereby allowing the second bushing 42111 to move along the width direction or rotate around the second fixed shaft 411. When the position of the scraper unit 420 is adjusted, the second locking member 423 is placed in the second locked state, thereby restricting the relative position of the second locking member 423 and the second fixed shaft 411, reducing the risk that the scraper unit 420 may move relative to the second fixed shaft 411 during operation, resulting in a deterioration in the peeling effect of the edge material 610.

[0167] Please refer to Figure 6 and Figure 7 In other embodiments, the cutting mechanism 200 includes a plurality of cutting units 220. The plurality of cutting units 220 are arranged sequentially along the width direction. At least one of the cutting units 220 located at both ends is used to cut the edge material 610.

[0168] The cutting mechanism 200 may include two cutting units 220, three cutting units 220, or more than three cutting units 220.

[0169] The cutting mechanism 200 includes multiple cutting units 220. Among these, the cutting unit 220 used for cutting the edge material 610 is the first cutting unit 220. The cutting unit 220 used for cutting the diaphragm blank 600 into two diaphragm sheets 700 is the second cutting unit 220. The first cutting unit 220 is generally located at both ends in the width direction. It should be noted that the cutting units 220 located at both ends of the multiple cutting units 220 are not necessarily the first cutting unit 220. For example, the cutting mechanism 200 includes two cutting units 220, one of which is the first cutting unit 220, and the other is the second cutting unit 220.

[0170] Optionally, the cutting mechanism 200 includes two cutting units 220, both of which are first cutting units 220. In this case, both edge pieces 610 of the diaphragm blank 600 are cut off, resulting in a better performance of the electrode 900.

[0171] Of course, the cutting mechanism 200 can also be equipped with three or more cutting units 220. In this case, it can include two first cutting units 220 and the rest as second cutting units 220. In this way, both edge pieces 610 of the diaphragm blank 600 are cut off, resulting in a better performance of the electrode 900. At the same time, the diaphragm blank 600 is divided into multiple diaphragms 700, allowing multiple electrodes 900 to be manufactured at once.

[0172] Along the width direction, at least one of the cutting units 220 located at both ends can cut off the edge material 610, thereby reducing or eliminating the impact of the edge material 610 on the performance of the electrode 900, improving the performance of the electrode 900, and increasing the yield of the electrode 900. The remaining cutting units 220 cut the diaphragm blank 600, so that one diaphragm blank 600 can produce multiple diaphragms 700, which can correspondingly produce multiple electrodes 900, thus improving production efficiency.

[0173] In other embodiments, the cutting mechanism 200 includes a first drive mechanism 221 and a cutter 222, the first drive mechanism 221 being connected to the cutter 222. The first drive mechanism 221 is configured to drive the cutter 222 toward or away from the diaphragm blank 600 so that the cutter 222 can cut the diaphragm blank 600.

[0174] The first drive mechanism 221 can drive the cutter 222 to move closer to or away from the blank without driving the cutter 222 to rotate around its own axis.

[0175] By setting the first drive mechanism 221 to drive the cutter 222 to approach or move away from the diaphragm blank 600, the cutter 222 only comes into contact with and rubs against other parts when needed, which helps to reduce the wear of the cutter 222 and extend its life.

[0176] In some other embodiments, the cutting mechanism 200 includes a first drive mechanism 221 and a cutter 222, with the first drive mechanism 221 connected to the cutter 222. The cutter 222 is a circular cutter, and the first drive mechanism 221 is configured to drive the cutter 222 to rotate about its own axis.

[0177] The first drive mechanism 221 can drive the cutter 222 to rotate around its own axis without driving the cutter 222 to move closer to or further away from the diaphragm blank 600.

[0178] By setting the first drive mechanism 221 to drive the cutter 222 to rotate around its own axis, the cutter 222 can rotate actively, resulting in better cutting effect on some materials.

[0179] Please refer to Figure 8 , Figure 8 This is a schematic diagram showing the inclined arrangement of the cutter 222 according to some embodiments of this application. In some embodiments, the cutter mechanism 200 includes a cutter 222, and the angle between the cutter 222 and the plane perpendicular to the width direction is α, satisfying: 0≤α≤45°.

[0180] α is the angle between the cutter 222 and a plane perpendicular to the width direction. The cutter 222 has a first cutting edge 2221 for cutting. During measurement, the angle between the perpendicular bisector of the first cutting edge 2221 of the cutter 222 and the plane perpendicular to the width direction can be measured.

[0181] Please refer to Figure 8 When α = 0, the cutter 222 is upright. When 0 < α ≤ 45°, the cutter 222 is tilted.

[0182] The angle between the cutter 222 and the plane perpendicular to the width direction can be: α = 0, 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45°, etc.

[0183] The angle between the cutter 222 and the plane perpendicular to the width direction affects the thickness of the edge of the film 700. A larger thinning area results in a lower energy density in the manufactured battery. By limiting the angle between the cutter 222 and the plane perpendicular to the width direction to 0–45°, a smaller thinning area at the edge of the film 700 is beneficial for increasing the energy density of the manufactured battery. When α > 45°, a larger thinning area at the edge of the film 700 results in a lower energy density in the manufactured battery. Furthermore, a smaller thinning area also reduces the risk of lithium plating in the battery.

[0184] In some embodiments, 0 ≤ α ≤ 15°.

[0185] The angle between the cutter 222 and the plane perpendicular to the width direction can be: α = 0, 1°, 2°, 3°, 4°, 5°, 6°, 7°, 8°, 9°, 10°, 11°, 12°, 13°, 14°, 15°, etc.

[0186] When 0≤α≤15°, the thinning zone at the edge of the 700 membrane is smaller, which is more conducive to improving the energy density of the manufactured battery.

[0187] Please refer to Figure 9 , Figure 9 for Figure 5 Enlarged view of position A. In some embodiments, the cutting mechanism 200 includes a cutter 222 having a first cutting edge 2221 for cutting. The thickness of the first cutting edge 2221 is H, satisfying: 0.01μm≤H≤10000μm.

[0188] The thickness of the first cutting edge 2221 is greater than or equal to 0.01 μm and less than or equal to 10000 μm. The thickness of the first cutting edge 2221 can be: H = 0.01 μm, 1 μm, 10 μm, 100 μm, 500 μm, 1000 μm, 3000 μm, 5000 μm, 8000 μm, 10000 μm, etc.

[0189] By limiting the thickness of the first cutting edge 2221 to the range of 0.01–10000 μm, the cutter 222 becomes relatively sharp, resulting in a better cutting effect and a longer lifespan. When H < 0.01 μm, the thickness of the first cutting edge 2221 of the cutter 222 is too thin, making the cutter 222 prone to wear and damage, and resulting in a shorter lifespan. When H > 10000 μm, the thickness of the first cutting edge 2221 is too thick, leading to lower sharpness and a poorer cutting effect.

[0190] In some embodiments, 0.01 μm ≤ H ≤ 1 μm.

[0191] The thickness of the first blade 2221 may be: H=0.01 μm, 0.03 μm, 0.05 μm, 0.08 μm, 0.1 μm, 0.15 μm, 0.2 μm, 0.25 μm, 0.3 μm, 0.3 5μm, 0.4μm, 0.45μm, 0.5μm, 0.55μm, 0.65μm, 0.7μm, 0.75μm, 0.8μm, 0.85μm, 0.9μm, 0.95μm, 1μm, etc.

[0192] When 0.01μm≤H≤1μm, the cutter 222 is relatively sharp, has a good cutting effect, and has a long service life.

[0193] Please refer to Figures 3-9In some embodiments, the film forming mechanism 100 includes a plurality of pressure rollers 110, with a roller gap formed between adjacent pressure rollers 110 for material to pass through. Along the conveying direction of the film blank 600, the end pressure roller 110 of the plurality of pressure rollers 110 is a first pressure roller 120. A cutting mechanism 200 is configured to cut the film blank 600 on the first pressure roller 120.

[0194] The roller pressing mechanism may include two pressure rollers 110, three pressure rollers 110, four pressure rollers 110, or more than four pressure rollers 110.

[0195] "A roller gap is formed between two adjacent rollers 110 to allow material to pass through" means that two adjacent rollers 110 cooperate to roll the material so that the thickness of the material is reduced to be equal to the width of the roller gap.

[0196] The first pressure roller 120 specifically refers to the last pressure roller 110 among multiple pressure rollers 110 located along the material conveying direction. Please refer to... Figure 3 , Figure 3 The intermediate roller pressing mechanism includes two rollers 110. At this time, the material can pass through the roller gap and be wound in any direction; therefore, either of the two rollers 110 can serve as the first roller 120. Optionally, the roller pressing mechanism includes four rollers 110, arranged sequentially from left to right. Counting from left to right, the material sequentially passes through the roller gap formed between the first and second rollers 110, the roller gap formed between the second and third rollers 110, and the roller gap formed between the third and fourth rollers 110. In this case, the fourth roller 110 is the last roller 110 among the multiple rollers 110, that is, the fourth roller 110 is the first roller 120. The cutting mechanism 200 can directly cut the film blank 600 on the first roller 120.

[0197] By setting multiple pressure rollers 110, the blank material can be gradually thinned and formed into a film 700. The degree of thinning each time is not too large, which helps to improve the uniformity and thickness consistency of the film blank 600. The cutting mechanism 200 can cut the film blank 600 on the first pressure roller 120 without the need for additional support structures for the film blank 600. This helps to reduce the number of parts in the electrode manufacturing device 10, simplify the structure of the electrode manufacturing device 10, and reduce the cost of the electrode manufacturing device 10.

[0198] Please refer to Figure 10 , Figure 10This is a schematic diagram of the structure of an electrode manufacturing apparatus 10 provided in other embodiments of this application. The electrode manufacturing apparatus 10 also includes a scraper mechanism 400, which is disposed downstream of the cutting mechanism 200. The scraper mechanism 400 is used to peel the edge material 610 off the film forming mechanism 100.

[0199] The doctor blade mechanism 400 is used to peel the edge material 610 attached to the film forming mechanism 100 from the film forming mechanism 100. The doctor blade mechanism 400 can remain in contact with the film forming mechanism 100 to peel the edge material 610 off. The doctor blade mechanism 400 can also have a first operating state and a first disengaged state. When the doctor blade mechanism 400 is in the first operating state, it is in contact with the film forming mechanism 100 to peel the edge material 610 off. When the doctor blade mechanism 400 is in the first disengaged state, it is not in contact with the film forming mechanism 100. In this way, the doctor blade mechanism 400 only contacts the film forming mechanism 100 during operation, which helps to reduce wear and tear on the doctor blade mechanism 400 and extend its service life.

[0200] After the cutting mechanism 200 cuts the edge material 610, the edge material 610 may adhere to the film forming mechanism 100, thus affecting the quality of the film 700 produced subsequently. By setting up the scraper mechanism 400, the edge material 610 adhering to the film forming mechanism 100 is scraped off, reducing the risk of edge material 610 adhering to the film forming mechanism 100. This is beneficial to improving the quality of the film 700 produced subsequently, improving the performance of the electrode 900, and increasing the yield of the electrode 900.

[0201] Please refer to Figure 11 , Figure 11 This is a schematic diagram of the structure of a scraper mechanism 400 provided in some embodiments of this application. In some embodiments, the scraper mechanism 400 includes a second fixed base 410 and a scraper unit 420. The scraper unit 420 is used to peel the edge material 610 off the film forming mechanism 100. Along the width direction, the scraper unit 420 is adjustablely positioned on the second fixed base 410.

[0202] The second mounting base 410 is a component used to mount the scraper unit 420. When the electrode manufacturing apparatus 10 is in operation, the position of the second mounting base 410 can be fixed relative to the ground. The second mounting base 410 can be fixed to the ground or the frame, or it can be detachably connected to the ground or the frame.

[0203] The scraper unit 420 is a component used to peel the edge material 610 from the film forming mechanism 100. The scraper unit 420 is adjustablely positioned on the second fixed base 410 along the width direction.

[0204] "The scraper unit 420 is adjustable in position to the second fixed base 410 along the width direction" means that the relative position of the scraper unit 420 and the second fixed base 410 can be adjusted in some way. For example, the scraper unit 420 can slide with the second fixed base 410, and the relative position of the scraper unit 420 and the second fixed base 410 can be changed by sliding the scraper unit 420. Alternatively, the second fixed base 410 may have multiple mounting positions, and the scraper unit 420 can be detachably connected to one of these mounting positions, achieving positional adjustment by changing different mounting positions.

[0205] By adjusting the position of the scraper unit 420 along the width direction on the first fixed base 210, the position of the scraper unit 420 can be adjusted as needed during production, thereby scraping away as much of the edge material 610 attached to the film forming mechanism 100 as possible and reducing the impact of the edge material 610 on the film sheet 700 produced subsequently. In addition, the position of the scraper unit 420 in the width direction can be adaptively adjusted according to the position of the cutting mechanism 200 to meet different production needs.

[0206] Please refer to Figure 11 In some embodiments, the scraper unit 420 includes a second drive mechanism 421 and a scraper 422, with the second drive mechanism 421 connected to the second fixed base 410 and the scraper 422. The second drive mechanism 421 is used to drive the scraper 422 to move closer to or away from the edge material 610 to peel the edge material 610 off the film forming mechanism 100.

[0207] The second drive mechanism 421 is used to drive the scraper 422 to move closer to or away from the edge material 610. The second drive mechanism 421 can drive the scraper 422 to move, thereby causing the scraper 422 to move closer to or away from the edge material 610. The second drive mechanism 421 can also drive the scraper 422 to rotate, thereby causing the scraper 422 to move closer to or away from the edge material 610.

[0208] The scraper 422 is a tool used to peel the edge material 610 from the film forming mechanism 100. The shape of the scraper 422 is not limited; for example, it can be rectangular, square, or arc-shaped. When the scraper 422 is near the edge material 610, it operates, peeling the edge material 610 from the film forming mechanism 100. When the scraper 422 is away from the edge material 610, it does not operate.

[0209] By setting a second drive mechanism 421 to drive the scraper 422 to move closer to or further away from the edge material 610, the scraper 422 only comes into contact with and rubs against other parts when needed, which helps to reduce the wear of the scraper 422 and extend its service life.

[0210] Please refer to Figure 11In some embodiments, the second fixed base 410 is provided with a second fixed shaft 411, which extends along the width direction. The scraper unit 420 includes a second bushing 42111, and a second drive mechanism 421 connects the second bushing 42111 and the scraper 422. The second bushing 42111 is sleeved on the second fixed shaft 411 to enable the scraper unit 420 to be positionally adjustable along the width direction.

[0211] The second fixed shaft 411 is a shaft structure that extends along the width direction. In other words, the length direction of the second fixed shaft 411 is parallel to the width direction of the diaphragm blank 600.

[0212] The second bushing 42111 is part of the scraper unit 420, and the second drive mechanism 421 connects the second bushing 42111 and the scraper 422. The second bushing 42111 is sleeved on the second fixed shaft 411, thereby allowing the second bushing 42111 to move along the length direction of the second fixed shaft 411, so as to realize the position adjustment of the scraper unit 420 along the width direction. Here, it can also be understood that the scraper unit 420 is sleeved on the second fixed shaft 411, thereby realizing the position adjustment of the scraper unit 420 along the width direction.

[0213] The second bushing 42111 is fitted onto the second fixed shaft 411. The second bushing 42111 can move along the length of the second fixed shaft 411, thereby making the position of the scraper unit 420 adjustable along the width direction. This arrangement is simple and easy to adjust.

[0214] Please refer to Figure 11 In some embodiments, the second bushing 42111 is rotatably fitted onto the second fixed shaft 411 about the axis of the second fixed shaft 411.

[0215] The second bushing 42111 is sleeved on the second fixed shaft 411. The second bushing 42111 can move along the length direction of the second fixed shaft 411. At the same time, the second bushing 42111 can also rotate around the second fixed shaft 411.

[0216] The second bushing 42111 can rotate around the second fixed shaft 411 to adjust the position of the scraper unit 420. In this way, the scraper unit 420 can move along the width direction and rotate around the second fixed shaft 411, making the position adjustment more flexible and thus meeting more production needs.

[0217] Please refer to Figure 11In some embodiments, the scraper mechanism 400 further includes a second locking member 423. The second locking member 423 has a second locked state and a second unlocked state. When the second locking member 423 is in the second locked state, the second bushing 42111 is locked to the second fixed shaft 411. When the second locking member 423 is in the second unlocked state, the second bushing 42111 can move relative to the second fixed shaft 411 in the width direction or rotate about the axis of the second fixed shaft 411.

[0218] The second locking member 423 has a second locked state and a second unlocked state, and the two states can be switched. In the second locked state, the second locking member 423 can lock the second bushing 42111 to the second fixed shaft 411. At this time, the second bushing 42111 cannot rotate or move relative to the second fixed shaft 411. In the second unlocked state, the second locking member 423 cannot lock the second bushing 42111 to the second fixed shaft 411. At this time, the second bushing 42111 can both rotate and move relative to the second fixed shaft 411.

[0219] Optionally, the second locking element 423 is a screw, which is threadedly connected to the second bushing 42111. By rotating the screw in the forward direction, the screw extends and abuts against the second fixed shaft 411, at which point the second locking element 423 is in a second locked state. By rotating the screw in the reverse direction, the screw exits the threaded hole and no longer abuts against the second fixed shaft 411, at which point the second locking element 423 is in a second unlocked state.

[0220] When the position of the scraper unit 420 needs to be adjusted, the second locking member 423 is placed in the second unlocked state, thereby allowing the second bushing 42111 to move along the width direction or rotate around the second fixed shaft 411. When the position of the scraper unit 420 is adjusted, the second locking member 423 is placed in the second locked state, thereby restricting the relative position of the second locking member 423 and the second fixed shaft 411, reducing the risk that the scraper unit 420 may move relative to the second fixed shaft 411 during operation, resulting in a deterioration in the peeling effect of the edge material 610.

[0221] Please refer to Figure 11 In some embodiments, the scraper mechanism 400 includes a second drive mechanism 421 and a scraper 422, the second drive mechanism 421 being connected to the scraper 422. The second drive mechanism 421 is configured to drive the scraper 422 toward or away from the film blank 600 to peel the edge material 610 off the film forming mechanism 100.

[0222] The second drive mechanism 421 includes a third mounting base 4211 and a third drive member 4212. The third mounting base 4211 is connected to the second bushing 42111, and the third drive member 4212 is connected to the third mounting base 4211 and the scraper 422. When the position of the second bushing 42111 is adjusted, the positions of the third mounting base 4211, the third drive member 4212, and the scraper 422 can be adjusted as a whole.

[0223] It should be noted that the scraper 422 can be detachably connected to the third drive unit 4212 so that the scraper 422 can be replaced as needed.

[0224] When the third driving member 4212 is activated, it can drive the scraper 422 to move closer to or further away from the edge material 610. The third driving member 4212 may include a linear driving member, the mounting end of which can be fixed to the third mounting base 4211, and the output end of which is connected to the scraper 422. When the third driving member 4212 extends, the cutter 222 moves closer to the edge material 610. When the third driving member 4212 retracts, the cutter 222 moves away from the edge material 610. The linear driving member can be a linear electric cylinder, a linear pneumatic cylinder, a linear hydraulic cylinder, etc. Of course, the third driving member 4212 may also include a rotary driving unit and a first transmission unit. The rotary driving unit outputs rotary motion, and the first transmission unit converts the rotary motion output by the rotary driving unit into linear motion of the scraper 422. The rotary driving unit can be an electric motor, an internal combustion engine, etc. The first transmission unit can be a crank-slider mechanism, a lead screw-nut mechanism, etc.

[0225] By setting a second drive mechanism 421 to drive the scraper 422 to move closer to or further away from the edge material 610, the scraper 422 only comes into contact with and rubs against other parts when needed, which helps to reduce the wear of the scraper 422 and extend its service life.

[0226] Please refer to Figure 11 and Figure 12 , Figure 12 for Figure 11 Enlarged view of position B. In some embodiments, the scraper mechanism 400 includes a scraper 422, which has a first receiving surface 4221, a first backing surface 4222, and a second cutting edge, the second cutting edge connecting the first receiving surface 4221 and the first backing surface 4222. The first receiving surface 4221 is used to contact the edge material 610, and the first backing surface 4222 is used to contact the film forming mechanism 100. The second cutting edge intersects with the first receiving surface 4221 to form a first guiding edge 4223. The first backing surface 4222 has a first edge 4224 extending in the width direction. The distance between the first guiding edge 4223 and the first edge 4224 gradually decreases in a first direction, which is parallel to the width direction and points towards the edge material 610 along the film 700.

[0227] The first receiving surface 4221 is the surface on the scraper 422 that comes into contact with the edge material 610. When the scraper 422 scrapes off the edge material 610, the edge material 610 adheres to the first receiving surface 4221 and detaches from the film forming mechanism 100 along the first receiving surface 4221.

[0228] The first backing surface 4222 is the surface on the scraper 422 that comes into contact with the film forming mechanism 100. When the scraper 422 scrapes off the edge material 610, the first backing surface 4222 abuts against the film forming structure, thereby causing the edge material 610 to peel off the film forming mechanism 100 as much as possible.

[0229] The first guiding edge 4223 is the intersection line of the second cutting edge and the first receiving surface 4221, and the first edge 4224 is the edge line extending along the width direction on the first backing surface 4222.

[0230] The first direction is parallel to the width direction and is directed from the diaphragm 700 to the edge material 610. In other words, the width direction can be bidirectional, meaning it can be either from the diaphragm 700 to the edge material 610 or vice versa. However, the first direction is unidirectional, limited to the direction from the diaphragm 700 to the edge material 610.

[0231] Along the first direction, the distance between the first guiding edge 4223 and the first edge 4224 gradually decreases. In other words, along the first direction, the first guiding edge 4223 gradually moves closer to the first edge 4224.

[0232] By gradually reducing the distance between the first guide edge 4223 and the first edge 4224 along the first direction, when the scraper 422 scrapes the material, the edge material 610 will move away from the diaphragm 700 along the first guide edge 4223, thereby reducing the impact of the edge material 610 on the diaphragm 700.

[0233] In some embodiments, the first guiding edge 4223 extends along an arc trajectory.

[0234] "The first guiding edge 4223 extends along the arc trajectory" means that the first guiding edge 4223 is in the shape of an arc.

[0235] The first guide edge 4223 extends along an arc trajectory, which facilitates the discharge of the edge material 610 and prevents the edge material 610 from accumulating.

[0236] Please refer to Figure 13 , Figure 13 This is a schematic diagram of the scraper mechanism 400 provided in other embodiments of this application. In other embodiments, the cutter mechanism 200 includes a plurality of cutters 222, which are spaced apart along the width direction. The scraper mechanism 400 includes a plurality of scrapers 422, which are arranged corresponding to the cutters 222.

[0237] The cutting mechanism 200 includes multiple cutters 222, and the waste material cut by each cutter 222 may adhere to the film forming mechanism 100. Therefore, the scraper mechanism 400 also includes multiple scrapers 422, and the scrapers 422 are arranged corresponding to the cutters 222 to scrape off the waste material adhering to the film forming mechanism 100.

[0238] It should be noted that the "scraper 422 corresponds to cutter 222 setting" is not limited to a one-to-one correspondence between scraper 422 and cutter 222. For example, please refer to... Figure 6 and Figure 13 ,exist Figure 6 The middle cutting mechanism 200 includes four cutters 222, while the scraper mechanism 400 includes only three scrapers 422. This is because the two middle cutters 222 are closer together, and the waste they produce can be scraped off by one scraper 422.

[0239] By setting multiple cutters 222, the edge material 610 can be cut, or a film blank 600 can be cut into multiple film sheets 700. The waste generated at the cutting position of each cutter 222 may adhere to the film forming mechanism 100. Therefore, a scraper 422 is set corresponding to the cutter 222 to scrape off the edge material 610 or waste adhering to the film forming mechanism 100.

[0240] Please refer to Figure 13 In some embodiments, along the width direction, the scrapers 422 located at both ends of the plurality of scrapers 422 are first scrapers 4225. The first scraper 4225 has a first receiving surface 4221, a first backing surface 4222, and a second cutting edge. The second cutting edge connects the first receiving surface 4221 and the first backing surface 4222. The first receiving surface 4221 is used to contact the edge material 610, and the first backing surface 4222 is used to contact the film forming mechanism 100. The second cutting edge intersects with the first receiving surface 4221 to form a first guiding edge 4223. The first backing surface 4222 has a first side 4224 extending along the width direction. The distance between the first guiding edge 4223 and the first side 4224 gradually decreases along a first direction. The first direction is parallel to the width direction and points along the film 700 toward the edge material 610.

[0241] The first scraper 4225 is the scraper 422 located at both ends among a plurality of scrapers 422. The first scraper 4225 corresponds to the position of the first cutter 222, and the first scraper 4225 is used to scrape off the edge material 610 cut by the first cutter 222.

[0242] The first scraper 4225 is one of the multiple scrapers 422 located at both ends in the width direction. The first scraper 4225 is used to scrape off the edge material 610 attached to the film forming mechanism 100. By gradually reducing the distance between the first guide edge 4223 and the first edge 4224 along the first direction, when the scraper 422 scrapes the material, the edge material 610 will move away from the film 700 along the first guide edge 4223, thereby reducing the impact of the edge material 610 on the film 700.

[0243] Please refer to Figure 13 and 14 , Figure 14 for Figure 13 Enlarged view of position C. Along the width direction, the scrapers 422 located at both ends are first scrapers 4225, and the scraper 422 located between the two first scrapers 4225 is a second scraper 4226. The second scraper 4226 has a second receiving surface 4227, a second backing surface 42261, and a third cutting edge, which connects the second receiving surface 4227 and the second backing surface 42261. The second receiving surface 4227 is used to contact the edge material 610, and the second backing surface 42261 is used to contact the film forming mechanism 100. The third cutting edge intersects with the second receiving surface 4227 to form a second guiding edge 4228, and the second backing surface 42261 has a second edge 4229 extending along the width direction. The distance between the second guiding edge 4228 and the second edge 4229 gradually increases from the middle position of the second edge 4229 to both ends.

[0244] The second scraper 4226 corresponds to the second cutter 222 and is used to scrape off the waste material cut by the second cutter 222.

[0245] The second receiving surface 4227 is the surface on the second scraper 4226 that comes into contact with the waste material. When the second scraper 4226 scrapes off the waste material, the waste material adheres to the second receiving surface 4227 and detaches from the film forming mechanism 100 along the second receiving surface 4227.

[0246] The second backing surface 42261 is the surface on the second scraper 4226 that comes into contact with the film forming mechanism 100. When the second scraper 4226 scrapes off the waste material, the second backing surface 42261 abuts against the film forming structure, thereby causing the edge material 610 to peel off the film forming mechanism 100 as much as possible.

[0247] The second guiding edge 4228 is the intersection line of the third cutting edge and the second receiving surface 4227, and the second edge 4229 is the edge line extending along the width direction on the first backing surface 4222.

[0248] The distance between the second leading edge 4228 and the second edge 4229 gradually increases from the middle position of the second edge 4229 to both ends. In other words, the second leading edge 4228 gradually moves away from the second edge 4229 from the middle position to both ends.

[0249] The second scraper 4226 is one of the multiple scrapers 422 located between the two first scrapers 4225 in the width direction. The second scraper 4226 is used to scrape off the waste material attached to the film forming mechanism 100. Along the width direction, film sheets 700 are provided on both sides of the second scraper 4226. Therefore, by gradually increasing the distance between the second guide edge 4228 and the second edge 4229 from the middle to both ends of the second edge 4229, when the second scraper 4226 scrapes the material, the waste material moves along the two ends of the second guide edge 4228 towards the middle of the second guide edge 4228, thereby reducing the impact of the waste material on the film sheet 700.

[0250] Please refer to Figures 10-14 The film forming mechanism 100 includes a plurality of pressure rollers 110, with a roller gap formed between adjacent pressure rollers 110 for material to pass through. Along the conveying direction of the film blank 600, the pressure roller 110 located at the end of the plurality of pressure rollers 110 is the first pressure roller 120. The scraper mechanism 400 is used to peel the edge material 610 off the first pressure roller 120.

[0251] By setting multiple pressure rollers 110, the blank material can be gradually thinned and formed into a film 700. The degree of thinning each time is not too large, which helps to improve the uniformity and thickness consistency of the film blank 600. The scraper mechanism 400 can peel off the edge material 610 attached to the first pressure roller 120, which is conducive to the continuous production of the electrode 900.

[0252] In some embodiments, the cutting mechanism 200 includes a cutter 222, the surface of which is provided with an anti-fouling coating. And / or the electrode manufacturing apparatus 10 further includes a scraper mechanism 400, disposed downstream of the cutting mechanism 200, the scraper mechanism 400 including a scraper 422 for peeling the edge material 610 from the film forming mechanism 100. The surface of the scraper 422 is provided with an anti-fouling coating.

[0253] The surfaces of the cutter 222 and / or scraper 422 are provided with an anti-fouling coating. Alternatively, at least one of the cutter 222 and scraper 422 has an anti-fouling coating on its surface.

[0254] Anti-fouling coatings are coatings used to reduce material adhesion.

[0255] By applying an anti-fouling coating to the surface of the cutter 222, the risk of the edge material 610 adhering to the cutter 222 can be reduced, thereby improving the cutting effect of the cutter 222. By applying an anti-fouling coating to the surface of the scraper 422, the risk of the edge material 610 adhering to the scraper 422 can be reduced, thereby improving the peeling effect of the scraper 422.

[0256] In some embodiments, the antifouling coating includes at least one of a nano-antifouling fluorinated coating, a graphene ceramic composite coating, and a diamond-like carbon coating.

[0257] The nano-anti-fouling fluorinated coating, graphene ceramic composite coating, and diamond-like coating have good anti-fouling effects and can reduce the risk of edge material 610 adhering to the cutter 222 and / or scraper 422.

[0258] In some embodiments, the cutting mechanism 200 includes a cutter 222, the material of which includes at least one selected from tool steel, cemented carbide, plastic, ceramic, diamond, and cubic boron nitride. And / or the electrode manufacturing apparatus 10 further includes a scraper mechanism 400, disposed downstream of the cutting mechanism 200, the scraper mechanism 400 including a scraper 422, the scraper 422 being used to peel the edge material 610 off the film forming mechanism 100. The scraper 422 is made of at least one selected from tool steel, cemented carbide, plastic, ceramic, diamond, and cubic boron nitride.

[0259] The material of the cutter 222 and / or scraper 422 includes at least one of tool steel, cemented carbide, plastic, ceramic, diamond, and cubic boron nitride. In other words, at least one of the cutter 222 and scraper 422 is made of at least one of tool steel, cemented carbide, plastic, ceramic, diamond, and cubic boron nitride.

[0260] The cutter 222 is made of at least one of tool steel, cemented carbide, plastic, ceramic, diamond, and cubic boron nitride, giving it high strength, resulting in better cutting performance and a longer lifespan. The scraper 422 is also made of at least one of tool steel, cemented carbide, plastic, ceramic, diamond, and cubic boron nitride, giving it high strength, resulting in better peeling performance and a longer lifespan.

[0261] Please refer to Figure 15 , Figure 15 This is a schematic diagram of the structure of an electrode manufacturing apparatus 10 provided in some embodiments of this application. In some embodiments, the electrode manufacturing apparatus 10 includes a material distribution mechanism 500, which is disposed downstream of the cutting mechanism 200. The material distribution mechanism 500 is used to move the edge material 610 cut by the cutting mechanism 200 away from the film 700 in the width direction.

[0262] The feeding mechanism 500 is used to move the edge material 610 or waste material cut by the cutting mechanism 200 away from the membrane 700 in the width direction. The feeding mechanism 500 can remain in contact with the membrane forming mechanism 100, thereby moving the edge material 610 or waste material away from the membrane 700 in the width direction. The feeding mechanism 500 can also have a second operating state and a second separating state. When the feeding mechanism 500 is in the second operating state, it is in contact with the membrane forming mechanism 100, causing the edge material 610 or waste material to move away from the membrane 700 in the width direction. When the feeding mechanism 500 is in the second separating state, it is not in contact with the membrane forming mechanism 100. In this way, the feeding mechanism 500 only contacts the membrane forming mechanism 100 during operation, which helps reduce wear and tear on the feeding mechanism 500 and extends its service life.

[0263] After the cutting mechanism 200 cuts the edge material 610, the gap between the edge material 610 and the membrane 700 is small, making it difficult to separate the edge material 610 from the membrane forming mechanism 100. By setting the material separating mechanism 500, the edge material 610 cut by the cutting mechanism 200 is moved away from the membrane 700 in the width direction, so as to facilitate the separation of the edge material 610 from the membrane forming mechanism 100. In addition, when the scraper mechanism 400 peels the edge material 610 from the membrane forming mechanism, the guide path of the scraper mechanism 400 for the edge material 610 is shortened, making it less likely for the edge material 610 to accumulate in the scraper mechanism 400.

[0264] Please refer to Figure 15 and Figure 16 , Figure 16 This is a schematic diagram of the structure of a material separating mechanism 500 provided in some embodiments of this application. In some embodiments, the material separating mechanism 500 includes a third driving mechanism 521 and a material separating blade 522, with the third driving mechanism 521 connected to the material separating blade 522. The third driving mechanism 521 is used to drive the material separating blade 522 to extend into the gap between the edge material 610 and the diaphragm 700, so that the edge material 610 cut by the cutting mechanism 200 moves away from the diaphragm 700 in the width direction.

[0265] The cutting blade 522 is a tool used to move the edge material 610 cut by the cutting mechanism 200 away from the diaphragm 700 in the width direction. The cutting blade 522 can first insert the blade tip 5223 into the gap between the edge material 610 and the diaphragm 700, and as the diaphragm 700 moves, push the edge material 610 away from the diaphragm 700.

[0266] The third drive mechanism 521 is used to drive the separating blade 522 to insert into the gap between the edge material 610 and the diaphragm 700. The third drive mechanism 521 can drive the separating blade 522 to move, thereby inserting the separating blade 522 into the gap between the edge material 610 and the diaphragm 700. The third drive mechanism 521 can also drive the separating blade 522 to rotate, thereby inserting the separating blade 522 into the gap between the edge material 610 and the diaphragm 700.

[0267] The third drive mechanism 521 includes a fourth drive member 5212, which is connected to the third fixed base 510 and the separating blade 522. When the fourth drive member 5212 is activated, it can drive the separating blade 522 to insert into the gap between the edge material 610 and the diaphragm 700. The fourth drive member 5212 may include a linear drive member, the mounting end of which may be disposed on the third fixed base 510, and the output end of which is connected to the separating blade 522. When the fourth drive member 5212 extends, the separating blade 522 inserts into the gap between the edge material 610 and the diaphragm 700. When the fourth drive member 5212 retracts, the separating blade 522 moves away from the gap between the edge material 610 and the diaphragm 700. The linear drive member can be a linear electric cylinder, a linear pneumatic cylinder, a linear hydraulic cylinder, etc. Of course, the fourth drive member 5212 may also include a rotary drive unit and a first transmission unit, the rotary drive unit outputting rotary motion, and the first transmission unit converting the rotary motion output by the rotary drive unit into linear motion of the separating blade 522. The rotation drive unit can be an electric motor, an internal combustion engine, etc. The first transmission unit can be a crank-slider mechanism, a lead screw-nut mechanism, etc.

[0268] By setting a third drive mechanism 521 to drive the dividing blade 522 to extend into the gap between the edge material 610 and the diaphragm 700, the dividing blade 522 only comes into contact with other parts when needed, which helps to reduce the wear of the dividing blade 522 and extend its service life.

[0269] Please refer to Figure 16 and Figure 17 , Figure 17 for Figure 16Enlarged view of position D. In some embodiments, the separating blade 522 includes a first surface 5221, a second surface, a connecting surface 5222, and a blade tip 5223. The blade tip 5223 is used to insert into the gap between the edge material 610 and the diaphragm 700. The first surface 5221 is used to contact the edge material 610, and the second surface is used to contact the diaphragm 700. The connecting surface 5222 connects the first surface 5221 and the second surface. The first surface 5221 intersects the connecting surface 5222 at a third side 5224, and the second surface intersects the connecting surface 5222 at a fourth side 5225. Both the third side 5224 and the fourth side 5225 extend to the blade tip 5223. The distance between the third side 5224 and the fourth side 5225 in the width direction gradually increases from the end of the fourth side 5225 near the blade tip 5223 to the end away from the blade tip 5223.

[0270] The first surface 5221 is the surface on the cutting blade 522 that comes into contact with the edge material 610. The first edge 4224 can be a bevel or a curved surface. When the blade tip 5223 is inserted into the gap between the edge material 610 and the diaphragm 700, as the diaphragm 700 moves, the edge material 610 will move along the first surface 5221, thereby gradually moving away from the diaphragm 700 in the width direction.

[0271] The second surface is the surface on the separating blade 522 that comes into contact with the diaphragm 700. The second surface can be flat. The second surface is attached to the edge of the diaphragm 700 so that as the diaphragm 700 moves, the second surface will not squeeze the diaphragm 700 and will not cause damage to the diaphragm 700.

[0272] The connecting surface 5222 can contact the membrane forming mechanism 100, thereby keeping all the edge material 610 as far away from the membrane 700 as possible. The blade tip 5223 is the tip of the separating blade 522. The blade tip 5223 is sharp and easy to insert into the gap between the edge material 610 and the membrane 700.

[0273] The statement "The distance between the third side 5224 and the fourth side 5225 along the width direction gradually increases from the end of the fourth side 5225 that is closer to the tip 5223 to the end that is away from the tip 5223" can also be understood as: The distance between the third side 5224 and the fourth side 5225 gradually increases from the end of the fourth side 5225 that is closer to the tip 5223 to the end that is away from the tip 5223.

[0274] By making the distance between the third side 5224 and the fourth side 5225 along the width direction gradually increase from the end of the fourth side 5225 near the tip 5223 to the end away from the tip 5223, after the tip 5223 is inserted into the gap between the edge material 610 and the diaphragm 700, as the diaphragm blank 600 moves, the edge material 610 will gradually move away from the diaphragm 700 under the guidance of the second surface, thereby widening the gap between the edge material 610 and the diaphragm 700.

[0275] Please refer to Figure 16 and Figure 17 In some embodiments, the material distribution mechanism 500 includes a third fixed base 510 and a material distribution unit 520, which is used to move the edge material 610 cut by the cutting mechanism 200 away from the diaphragm 700 in the width direction. The material distribution unit 520 is adjustablely positioned on the third fixed base 510 in the width direction.

[0276] The third mounting base 510 is a component used to mount the material distribution unit 520. When the electrode manufacturing apparatus 10 is in operation, the position of the third mounting base 510 can be fixed relative to the ground. The third mounting base 510 can be fixed to the ground or the frame, or it can be detachably connected to the ground or the frame.

[0277] The material separating unit 520 is a component used to move the edge material 610 or waste material cut by the cutting mechanism 200 away from the diaphragm 700 in the width direction. The material separating unit 520 is adjustablely positioned on the third fixed base 510 in the width direction.

[0278] "The material distribution unit 520 is adjustablely positioned on the third fixed base 510 along the width direction" means that the relative position of the material distribution unit 520 and the third fixed base 510 can be adjusted in some way. For example, the material distribution unit 520 can slide with the third fixed base 510, and the relative position of the material distribution unit 520 and the third fixed base 510 can be changed by sliding the material distribution unit 520. Alternatively, the third fixed base 510 may have multiple mounting positions, and the material distribution unit 520 can be detachably connected to one of these mounting positions, achieving positional adjustment by changing different mounting positions.

[0279] By adjusting the position of the material distribution unit 520 along the width direction on the third fixed base 510, the position of the material distribution unit 520 can be adjusted as needed during production, so that the edge material 610 cut by the cutting mechanism 200 moves away from the film 700 along the width direction, facilitating the separation of the edge material 610 from the film forming mechanism 100. Furthermore, the position of the material distribution unit 520 in the width direction can be adaptively adjusted according to the position of the cutting mechanism 200 to meet different production needs.

[0280] Please refer to Figure 16 and Figure 17 In some embodiments, the material separating unit 520 includes a third drive mechanism 521 and a material separating blade 522. The third drive mechanism 521 is connected to the third fixed base 510 and the material separating blade 522. The third drive mechanism 521 is used to drive the material separating blade 522 to extend into the gap between the edge material 610 and the diaphragm 700, so that the edge material 610 cut by the cutting mechanism 200 moves away from the diaphragm 700 in the width direction.

[0281] By setting a third drive mechanism 521 to drive the dividing blade 522 to extend into the gap between the edge material 610 and the diaphragm 700, the dividing blade 522 only comes into contact with other parts when needed, which helps to reduce the wear of the dividing blade 522 and extend its service life.

[0282] Please refer to Figure 16 and Figure 17 In some embodiments, the third fixed base 510 is provided with a third fixed shaft 511, which extends along the width direction. The material distribution unit 520 includes a third bushing 52111, and a third drive mechanism 521 connects the third bushing 52111 and the material distribution blade 522. The third bushing 52111 is sleeved on the third fixed shaft 511 to enable the material distribution unit 520 to be positionally adjustable along the width direction.

[0283] The third fixed shaft 511 is a shaft structure that extends along the width direction. In other words, the length direction of the third fixed shaft 511 is parallel to the width direction of the diaphragm blank 600.

[0284] The third bushing 52111 is part of the material distribution unit 520. The third drive mechanism 521 also includes a fourth mounting base 5211, which is connected to the third bushing 52111. The fourth drive member 5212 connects the fourth mounting base 5211 and the material distribution blade 522. The third bushing 52111 is sleeved on the third fixed shaft 511, thereby allowing the third bushing 52111 to move along the length direction of the third fixed shaft 511, so as to realize the position adjustment of the material distribution unit 520 in the width direction. Here, it can also be understood that the material distribution unit 520 is sleeved on the third fixed shaft 511, thereby realizing the position adjustment of the material distribution unit 520 in the width direction.

[0285] The third bushing 52111 is fitted onto the third fixed shaft 511. The third bushing 52111 can move along the length of the third fixed shaft 511, thereby making the position of the material distribution unit 520 adjustable along the width direction. This setup is simple and easy to adjust.

[0286] In some embodiments, the third drive mechanism 521 further includes a fifth mounting base connected to the output end of the fourth drive member 5212. The dispensing blade 522 is rotatably mounted on the fifth mounting base.

[0287] The material separating mechanism 500 also includes a fourth locking member, which has a fourth locked state and a fourth unlocked state. When the fourth locking member is in the fourth locked state, it locks the material separating blade 522 to the fifth mounting base, and the material separating blade 522 cannot rotate relative to the fifth mounting base. When the fourth locking member is in the fourth unlocked state, the material separating blade 522 can rotate relative to the fifth mounting base.

[0288] Optionally, the fourth locking element is a screw, and the dividing blade 522 has an arc groove in which the fourth locking element is accommodated. The fourth locking element is threadedly connected to the fifth mounting base. When the fourth locking element is tightened, it is in a fourth locked state. When the fourth locking element is loosened, it is in a fourth unlocked state. Multiple fourth locking elements can be used to improve the locking effect.

[0289] Please refer to Figure 16 and Figure 17 In some embodiments, the third bushing 52111 is rotatably fitted onto the third fixed shaft 511 about the axis of the third fixed shaft 511.

[0290] The third bushing 52111 is sleeved on the third fixed shaft 511. The third bushing 52111 can move along the length direction of the third fixed shaft 511. At the same time, the third bushing 52111 can also rotate around the third fixed shaft 511.

[0291] The third bushing 52111 can rotate around the third fixed shaft 511 to adjust the position of the material distribution unit 520. In this way, the material distribution unit 520 can move along the width direction and rotate around the third fixed shaft 511, making the position adjustment more flexible and thus meeting more production needs.

[0292] Please refer to Figure 16 and Figure 17 In some embodiments, the dispensing mechanism 500 further includes a third locking member 523. The third locking member 523 has a third locked state and a third unlocked state. When the third locking member 523 is in the third locked state, the third bushing 52111 is locked to the third fixed shaft 511. When the third locking member 523 is in the third unlocked state, the third bushing 52111 can move relative to the third fixed shaft 511 in the width direction or rotate about the axis of the third fixed shaft 511.

[0293] The third locking member 523 has a third locking state and a third unlocking state, and the three states can be switched. In the third locking state, the third locking member 523 can lock the third bushing 52111 to the third fixed shaft 511. At this time, the third bushing 52111 cannot rotate or move relative to the third fixed shaft 511. In the third unlocking state, the third locking member 523 cannot lock the third bushing 52111 to the third fixed shaft 511. At this time, the third bushing 52111 can both rotate and move relative to the third fixed shaft 511.

[0294] Optionally, the third locking element 523 is a screw, which is threadedly connected to the third bushing 52111. By rotating the screw in the forward direction, the screw extends and abuts against the third fixed shaft 511, at which point the third locking element 523 is in the third locked state. By rotating the screw in the reverse direction, the screw exits the threaded hole and no longer abuts against the third fixed shaft 511, at which point the third locking element 523 is in the third unlocked state.

[0295] When the position of the dispensing unit 520 needs to be adjusted, the third locking member 523 is placed in the third unlocked state, thereby allowing the third bushing 52111 to move along the width direction or rotate around the third fixed shaft 511. When the position of the dispensing unit 520 is adjusted, the third locking member 523 is placed in the third locked state, thereby restricting the relative position of the third locking member 523 and the third fixed shaft 511, reducing the risk that the dispensing unit 520 may move relative to the third fixed shaft 511 during operation, resulting in a deterioration in the dispensing effect.

[0296] Please refer to Figure 18 , Figure 18 This is a schematic diagram of the material distribution mechanism 500 provided in other embodiments of this application. In other embodiments, the cutting mechanism 200 includes a plurality of cutters 222, which are spaced apart along the width direction. The material distribution mechanism 500 includes a plurality of material distribution blades 522, which are arranged corresponding to the cutters 222.

[0297] The cutting mechanism 200 includes multiple cutters 222, and the waste material cut by each cutter 222 may adhere to the film forming mechanism 100. Therefore, the material separating mechanism 500 also includes multiple material separating blades 522, and the material separating is arranged to correspond to the cutters 222, so that the edge material 610 cut by the cutters 222 moves away from the film 700 in the width direction.

[0298] It should be noted that the separating blade 522 and the cutting blade 222 may or may not correspond one-to-one. For example, one separating blade 522 can correspond to causing the edge material 610 or waste material cut off by two cutting blades 222 to move away from the diaphragm 700 in the width direction.

[0299] By setting multiple cutters 222, the edge material 610 can be cut, or a film blank 600 can be cut into multiple films 700. The waste generated at the cutting position of each cutter 222 may adhere to the film forming mechanism 100. Therefore, the separating blade 522 is set corresponding to the cutter 222 so that the edge material 610 or waste cut off by the cutter 222 is moved away from the film 700 in the width direction.

[0300] Please refer to Figure 19 , Figure 20 and Figure 21 , Figure 19This is a schematic diagram of the structure of an electrode manufacturing apparatus 10 provided in some embodiments of this application. Figure 20 This is a schematic diagram showing the connection between the cutting mechanism 200 and the material distribution mechanism 500 provided in some embodiments of this application. Figure 21 This is a schematic diagram showing the connection between the cutting mechanism 200 and the material distribution mechanism 500 provided in other embodiments of this application. In some embodiments, the first fixed base 210 and the third fixed base 510 are the same fixed base, and the first bushing 22111 and the third bushing 52111 are the same bushing.

[0301] The cutting mechanism 200 includes a first mounting base 2211, which comprises a base body and a first bushing 22111, with the base body connected to the first bushing 22111. The first drive member 2212, the second mounting base 2213, the second drive member 2214, and the cutter 222 of the cutting mechanism 200 are all directly or indirectly connected to the base body. The fourth drive member 5212 and the separating blade 522 of the material separating mechanism 500 are both directly or indirectly connected to the base body. The first bushing 22111 is sleeved on the first mounting shaft.

[0302] Of course, the first fixed seat 210 and the second fixed seat 410 can also be the same fixed seat, and the first bushing 22111 and the second bushing 42111 can also be the same bushing.

[0303] In some embodiments, the film forming mechanism 100 includes a rolling mechanism for rolling material to thin the material into a film 700.

[0304] A rolling mechanism is a mechanism that causes continuous plastic deformation of materials. When the rolling mechanism rolls the material, it can reduce the thickness of the material. Once the thickness of the material is reduced to the design requirements, it can be formed into a film blank of 600.

[0305] By using a roller pressing mechanism to press the material, the material is thinned and formed into a film blank of 600, which is highly efficient and has good uniformity.

[0306] In some embodiments, the rolling mechanism includes a plurality of pressure rollers 110, with a rolling gap formed between two adjacent pressure rollers 110 for material to pass through.

[0307] The roller pressing mechanism may include two pressure rollers 110, three pressure rollers 110, four pressure rollers 110, or more than four pressure rollers 110.

[0308] "A roller gap is formed between two adjacent rollers 110 to allow material to pass through" means that two adjacent rollers 110 cooperate to roll the material so that the thickness of the material is reduced to be equal to the width of the roller gap.

[0309] By setting multiple pressure rollers 110, the material can be gradually thinned and formed into a film blank 600. The degree of thinning each time will not be too large, which is beneficial to improving the uniformity and thickness consistency of the film blank 600.

[0310] In some embodiments, along the conveying direction of the film blank 600, the end pressure roller 110 of the plurality of pressure rollers 110 is the first pressure roller 120. The composite mechanism 300 includes a composite roller 310, and a composite gap is formed between the composite roller 310 and the first pressure roller 120 for the film 700 and the substrate 800 to pass through.

[0311] The composite roller 310 is a roller structure used to composite the film 700 and the substrate 800. The composite roller 310 cooperates with the first pressure roller 120 to composite the film 700 and the substrate 800, thus reducing the number of composite rollers 310. Of course, in other embodiments, the composite mechanism 300 may include multiple composite rollers 310, which cooperate to press the film 700 and the substrate 800 together to composite the film 700 and the substrate 800.

[0312] The composite roller 310 cooperates with the first pressure roller 120 to roll the diaphragm 700 and the substrate 800 to composite the diaphragm 700 and the substrate 800 into an electrode 900. The first pressure roller 120 serves as both a component for rolling the material and a component for combining the diaphragm 700 and the substrate 800. One component achieves two functions, simplifying the structure of the electrode manufacturing apparatus 10 and reducing the cost of the electrode manufacturing apparatus 10.

[0313] According to some embodiments of this application, please refer to Figures 2 to 21 .

[0314] This application provides an electrode manufacturing apparatus 10, which includes a film forming mechanism 100, a cutting mechanism 200, and a composite mechanism 300. The film forming mechanism 100 is used to form a film blank 600 from material. The cutting mechanism 200 is disposed downstream of the film forming mechanism 100 and is used to cut at least one edge 610 of the film blank 600 along its width direction to form a film 700. The composite mechanism 300 is disposed downstream of the cutting mechanism 200 and is used to composite the film 700 with a substrate 800 to form an electrode 900. The film forming mechanism 100 is capable of forming the film blank 600 from material. The film blank 600 has an edge 610 located on at least one side of the film blank 600 along its width direction. The edge 610 includes a wavy edge, a serrated edge, burrs, etc. The presence of the edge 610 affects the performance of the electrode 900. The edge material 610 of the diaphragm blank 600 is cut by a cutting mechanism 200 to form a diaphragm 700. The diaphragm 700 is then bonded to a substrate 800 by a bonding mechanism 300 to form an electrode 900. The electrode 900 manufactured using this electrode manufacturing apparatus 10, due to the cutting mechanism 200 cutting off the edge material 610, has its impact on the performance of the electrode 900 reduced or eliminated, thus improving the performance and yield of the electrode 900.

[0315] The electrode manufacturing apparatus 10 also includes a scraper mechanism 400, which is located downstream of the cutter mechanism 200. The scraper mechanism 400 is used to peel the edge material 610 off the film forming mechanism 100. After the cutter mechanism 200 cuts the edge material 610, the edge material 610 may adhere to the film forming mechanism 100, thereby affecting the quality of the subsequently produced film 700. By setting up the scraper mechanism 400, the edge material 610 adhering to the film forming mechanism 100 is scraped off, reducing the risk of edge material 610 adhering to the film forming mechanism 100, which is beneficial to improving the quality of the subsequently produced film 700, improving the performance of the electrode 900, and increasing the yield of the electrode 900.

[0316] The electrode manufacturing apparatus 10 includes a material distribution mechanism 500, which is located downstream of the cutting mechanism 200. The material distribution mechanism 500 is used to move the edge material 610 cut by the cutting mechanism 200 away from the membrane 700 in the width direction. After the cutting mechanism 200 cuts the edge material 610, the gap between the edge material 610 and the membrane 700 is small, making it difficult to separate the edge material 610 from the membrane forming mechanism 100. By setting the material distribution mechanism 500, the edge material 610 cut by the cutting mechanism 200 is moved away from the membrane 700 in the width direction, making it easier to separate the edge material 610 from the membrane forming mechanism 100. In addition, when the scraper mechanism 400 peels the edge material 610 from the membrane forming mechanism, the guide path of the scraper mechanism 400 for the edge material 610 is shortened, making it less likely for the edge material 610 to accumulate in the scraper mechanism 400.

[0317] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An electrode tab manufacturing apparatus characterized by comprising: The application relates to a film forming mechanism for forming a film blank, a cutter mechanism arranged downstream of the film forming mechanism, the cutter mechanism being configured to cut at least one edge of the film blank along a width direction of the film blank to form a film, a separating mechanism arranged downstream of the cutter mechanism, the separating mechanism being configured to separate the edge from the film blank along the width direction, a scraper mechanism arranged downstream of the separating mechanism, the scraper mechanism being configured to separate the edge from the film forming mechanism, and a laminating mechanism arranged downstream of the scraper mechanism, the laminating mechanism being configured to laminate the film with a substrate to form a pole piece. The cutter mechanism comprises a first fixed seat, a cutter unit configured to cut the film blank, the cutter unit being arranged on the first fixed seat in a position-adjustable manner along the width direction. The cutter unit comprises a first driving mechanism and a cutter, the first driving mechanism being connected to the first fixed seat and the cutter, the first driving mechanism being configured to drive the cutter to move towards or away from the film blank. The cutter is a circular cutter, and the first driving mechanism is further configured to drive the cutter to rotate around an axis of the cutter. The first driving mechanism comprises a first mounting seat, a second mounting seat, a first driving member and a second driving member, the first mounting seat being arranged on the first fixed seat in a position-adjustable manner along the width direction, the first driving member being connected to the first mounting seat and the second mounting seat, the second driving member being arranged on the second mounting seat, the cutter being connected to the second driving member, the first driving member being configured to drive the second mounting seat to move so as to drive the cutter to move towards or away from the film blank, and the second driving member being configured to drive the cutter to rotate around an axis of the cutter.

2. The pole piece manufacturing apparatus according to claim 1, wherein The first fixed seat is provided with a first fixed shaft extending along the width direction, and the cutter unit comprises a first shaft sleeve sleeved on the first fixed shaft. The first shaft sleeve is rotatably sleeved on the first fixed shaft around an axis of the first fixed shaft. The cutter mechanism further comprises a first locking member having a first locking state and a first unlocking state, when the first locking member is in the first locking state, the first shaft sleeve is locked on the first fixed shaft, and when the first locking member is in the first unlocking state, the first shaft sleeve can move along the width direction relative to the first fixed shaft or rotate around the axis of the first fixed shaft.

3. The pole piece manufacturing apparatus according to claim 2, wherein The cutter mechanism comprises a plurality of cutter units arranged in sequence along the width direction, and at least one of the cutter units at two ends is configured to cut the edge.

4. The pole piece manufacturing apparatus according to claim 3, wherein The cutter mechanism comprises a cutter, and an angle between the cutter and a plane perpendicular to the width direction is alpha, and 0<=alpha<=45 degrees.

5. The pole piece manufacturing apparatus according to claim 4, wherein The cutter mechanism comprises a cutter, and the cutter has a first cutting edge for cutting, and a thickness of the first cutting edge is H, and 0.01 micrometers<=H<=10000 micrometers.

6. The pole piece manufacturing apparatus according to claim 2, wherein 0.01 micrometers<=H<=1 micrometers.

7. The pole piece manufacturing apparatus according to claim 6, wherein ​ 8. The pole piece manufacturing apparatus according to claim 7, wherein ​ 9. The pole piece manufacturing apparatus according to claim 2, wherein ​ 10. The pole piece manufacturing apparatus according to claim 1, wherein ​ 11. The pole piece manufacturing apparatus according to claim 10, wherein 0≤α≤15°。 12. The pole piece manufacturing apparatus according to claim 1, wherein ​ 13. The pole piece manufacturing apparatus according to claim 12, wherein ​ 14. The pole piece manufacturing apparatus according to claim 1, wherein The film forming mechanism comprises a plurality of compression rollers, and a compression gap for passing material is formed between two adjacent compression rollers. In the conveying direction of the film blank, the compression roller at the end of the plurality of compression rollers is a first compression roller, and the cutter mechanism is configured to cut the film blank on the first compression roller.

15. The pole piece manufacturing apparatus according to claim 1, wherein The scraper mechanism comprises: a second fixed seat; a scraper unit for stripping the edge material from the film forming mechanism, and the scraper unit is adjustably arranged on the second fixed seat in the width direction.

16. The pole piece manufacturing apparatus according to claim 15, wherein The scraper unit comprises a second driving mechanism and a scraper, and the second driving mechanism is connected to the second fixed seat and the scraper. The second driving mechanism is used to drive the scraper to move closer to or away from the edge material.

17. The pole piece manufacturing apparatus of claim 16, wherein The second fixed seat is provided with a second fixed shaft extending in the width direction, and the scraper unit comprises a second shaft sleeve. The second driving mechanism is connected to the second shaft sleeve and the scraper, and the second shaft sleeve is sleeved on the second fixed shaft.

18. The pole piece manufacturing apparatus of claim 17, wherein The second shaft sleeve is rotatably sleeved on the second fixed shaft around the axis of the second fixed shaft.

19. The pole piece manufacturing apparatus of claim 18, wherein The scraper mechanism further comprises a second locking member having a second locked state and a second unlocked state. When the second locking member is in the second locked state, the second shaft sleeve is locked to the second fixed shaft. When the second locking member is in the second unlocked state, the second shaft sleeve can move relative to the second fixed shaft in the width direction or rotate around the axis of the second fixed shaft.

20. The pole piece manufacturing apparatus of claim 1, wherein The scraper mechanism comprises a scraper having a first material receiving surface, a first material backing surface, and a second blade. The second blade connects the first material receiving surface and the first material backing surface. The first material receiving surface is used to contact the edge material, and the first material backing surface is used to contact the film forming mechanism. The second blade intersects the first material receiving surface to form a first guide edge. The first material backing surface has a first edge extending in the width direction. The distance between the first guide edge and the first edge gradually decreases in a first direction. The first direction is parallel to the width direction and points from the film blank to the edge material.

21. The pole piece manufacturing apparatus of claim 20, wherein The first guide edge extends along a circular arc trajectory.

22. The pole piece manufacturing apparatus of claim 1, wherein The cutter mechanism comprises a plurality of cutters arranged at intervals in the width direction, and the scraper mechanism comprises a plurality of scrapers corresponding to the cutters.

23. The pole piece manufacturing apparatus of claim 22, wherein In the width direction, the scrapers at both ends of the plurality of scrapers are first scrapers. The first scrapers have a first material receiving surface, a first material backing surface, and a second blade. The second blade connects the first material receiving surface and the first material backing surface. The first material receiving surface is used to contact the edge material, and the first material backing surface is used to contact the film forming mechanism. The second blade intersects the first material receiving surface to form a first guide edge. The first material backing surface has a first edge extending in the width direction. The distance between the first guide edge and the first edge gradually decreases in a first direction. The first direction is parallel to the width direction and points from the film blank to the edge material.

24. The pole piece manufacturing apparatus of claim 23, wherein The scrapers located at two ends in the width direction are first scrapers, and the scrapers located between the two first scrapers are second scrapers, the second scraper has a second material receiving surface, a second material backing surface, and a third blade, the third blade connects the second material receiving surface and the second material backing surface, the second material receiving surface is used to contact the edge material, the second material backing surface is used to contact the film forming mechanism, the third blade intersects the second material receiving surface to form a second guide edge, the second material backing surface has a second edge extending in the width direction, and the distance between the second guide edge and the second edge gradually increases from the middle of the second edge to the two ends.

25. The pole piece manufacturing apparatus of claim 1, wherein The film forming mechanism includes a plurality of pressure rollers, and a roller gap for passing the material is formed between adjacent two pressure rollers, and in the conveying direction of the film blank, the pressure roller located at the end is a first pressure roller, and the scraper mechanism is used to strip the edge material from the first pressure roller.

26. The pole piece manufacturing apparatus according to claim 1, wherein The cutting knife mechanism includes a cutting knife, and the surface of the cutting knife is provided with an anti-fouling coating. And / or The scraper mechanism includes a scraper, the scraper is used to strip the edge material from the film forming mechanism, and the surface of the scraper is provided with an anti-fouling coating.

27. The pole piece manufacturing apparatus of claim 26, wherein The anti-fouling coating includes at least one of a nano anti-fouling fluorinated coating, a graphene ceramic composite coating, and a diamond-like coating.

28. The electrode sheet manufacturing apparatus according to any one of claims 1 to 27, wherein The material distribution mechanism includes a third driving mechanism and a material distribution knife, the third driving mechanism is connected to the material distribution knife, and the third driving mechanism is used to drive the material distribution knife to extend into the gap between the edge material and the film sheet, so that the edge material cut by the cutting knife mechanism is away from the film sheet in the width direction.

29. The pole piece manufacturing apparatus of claim 28, wherein The material distribution knife includes a first surface, a second surface, a connecting surface, and a knife tip, the knife tip is used to insert into the gap between the edge material and the film sheet, the first surface is used to contact the edge material, the second surface is used to contact the film sheet, the connecting surface connects the first surface and the second surface, the first surface intersects the connecting surface to form a third edge, the second surface intersects the connecting surface to form a fourth edge, the third edge and the fourth edge both extend to the knife tip, and the distance between the third edge and the fourth edge in the width direction gradually increases from one end close to the knife tip to one end away from the knife tip.

30. The electrode sheet manufacturing apparatus according to any one of claims 1 to 27, wherein The material distribution mechanism includes: A third fixed seat; A material distribution unit, which is used to make the edge material cut by the cutting knife mechanism away from the film sheet in the width direction, and the material distribution unit is adjustably arranged on the third fixed seat in the width direction.

31. The pole piece manufacturing apparatus of claim 30, wherein The third fixed seat is provided with a third fixed shaft extending in the width direction, and the material distribution unit includes a third shaft sleeve sleeved on the third fixed shaft.

32. The pole piece manufacturing apparatus of claim 31, wherein The third shaft sleeve is rotatably sleeved on the third fixed shaft around the axis of the third fixed shaft.

33. The pole piece manufacturing apparatus of claim 32, wherein The material distribution mechanism further comprises a third locking member having a third locked state and a third unlocked state, when the third locking member is in the third locked state, the third shaft sleeve is locked to the third fixed shaft; when the third locking member is in the third unlocked state, the third shaft sleeve can move relative to the third fixed shaft along the width direction or rotate around the axis of the third fixed shaft.

34. The electrode tab manufacturing apparatus according to any one of claims 1 to 27, wherein The film forming mechanism comprises a rolling mechanism for rolling the material to thin the material into a film.

35. The pole piece manufacturing apparatus of claim 34, wherein The rolling mechanism comprises a plurality of rolling rollers, and a rolling gap for the material to pass through is formed between adjacent two rolling rollers.

36. The pole piece manufacturing apparatus of claim 35, wherein In the conveying direction of the film blank, the rolling roller located at the end of the plurality of rolling rollers is a first rolling roller, and the laminating mechanism comprises a laminating roller, and a laminating gap for the film and the substrate to pass through is formed between the laminating roller and the first rolling roller.

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