Powder scraping device for pole piece and battery production system

Abstract

The embodiment of the present application provides a kind of polar piece powder scraping equipment and battery production system.Polar piece powder scraping equipment includes roller body, clamping device and scraper device.Roller body has outer circumferential surface.Clamping device is used to clamp polar piece and drive polar piece to move on outer circumferential surface.Scraper device is located in the radial side of roller body, and is spaced apart along the circumferential direction of roller body with clamping device, scraper device includes scraper and first detection piece, scraper is used to act on polar piece on outer circumferential surface, scraper is movably arranged along first direction, and first detection piece is used to detect the position of scraper along first direction.The axial direction of roller body is arranged to intersect with first direction.The present application is conducive to improving the reliability of battery monomer.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more specifically, to an electrode powder scraping device and a battery production system. Background Technology

[0002] Battery cells are widely used in electronic devices such as mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and power tools, etc.

[0003] In the development of battery technology, how to improve the reliability of individual battery cells is a technical problem that urgently needs to be solved. Utility Model Content

[0004] In view of the above problems, this application provides an electrode powder scraping device and a battery production system, which helps to improve the reliability of battery cells.

[0005] In a first aspect, this application provides an electrode powder scraping device, which includes a roller body, a clamping device, and a scraper device. The roller body has an outer peripheral surface. The clamping device is used to clamp the electrode and drive the electrode to move on the outer peripheral surface. The scraper device is located on one side of the roller body in the radial direction and is spaced apart from the clamping device along the circumference of the roller body. The scraper device includes a scraper and a first detection element. The scraper is used to act on the electrode on the outer peripheral surface. The scraper is movable along a first direction, and the first detection element is used to detect the position of the scraper along the first direction. The axial direction of the roller body intersects with the first direction.

[0006] According to the electrode powder scraping equipment of this application, the clamping device can clamp and control the electrode transmission. Combined with the supporting effect of the roller body on the electrode, it ensures that the electrode remains flat and stable during the powder scraping process, improving the consistency of powder scraping quality. The scraper moves in a single direction, and the position of the scraper is detected by the first detection element, realizing precise detection and control of the scraper position, improving the powder scraping accuracy, effectively reducing the possibility of excessively shallow or deep scratches caused by scraper position deviation, improving the accuracy of the detection results of the quality of the adhesive floating in the electrode coating, improving the production quality of the electrode, and improving the reliability of the battery cell.

[0007] In some embodiments, the clamping device and the scraper device are respectively disposed on both sides of the roller body along the first direction.

[0008] In the above technical solution, the aforementioned arrangement helps to reduce mutual interference between the clamping device and the scraper device during operation. The slight vibrations generated when the clamping device drives the electrode transmission are mitigated by positioning the clamping device and the scraper device on opposite sides of the roller body, thereby reducing the possibility of slight vibrations causing scraper position displacement and affecting powder scraping accuracy.

[0009] In some embodiments, the clamping device includes two clamping components, which are spaced apart along a second direction and intersect each other in the axial direction, the first direction and the second direction. The two clamping components are used to clamp the two ends of the electrode respectively, and the clamping device is configured such that the two clamping components drive the electrode to reciprocate on the outer peripheral surface.

[0010] In the above technical solution, by setting two clamping components and driving the electrode to reciprocate, the coating layer can be scraped multiple times. Samples scraped multiple times can be collected and verified in batches, improving the accuracy of the test results for the quality of the adhesive floating in the electrode coating. At the same time, the reciprocating motion combined with the movement of the scraper along the first direction can adjust the scraping depth (e.g., a shallower scraping depth for the first reciprocating motion, and a deeper scraping depth for the second reciprocating motion by finely adjusting the scraper position), further improving the scraping accuracy.

[0011] In some embodiments, the clamping assembly includes a drive member and a clamping member, the drive member being convexly connected to the clamping member, the drive member being used to drive the clamping member to move along a first direction, and the clamping member being used to clamp one end of the electrode sheet.

[0012] In the above technical solution, the clamping components in the two clamping assemblies reciprocate in a single direction under the drive of the driving component, which can realize the reciprocating motion of the electrode sheet on the outer peripheral surface, thereby simplifying the driving method of the clamping components, simplifying the overall motion structure, and reducing the manufacturing cost of the powder scraping device.

[0013] In some embodiments, the clamping member includes a clamping portion, and along a second direction, the distance between the clamping portions of two clamping assemblies is less than or equal to the radial dimension of the roller.

[0014] In the above technical solution, when the distance between the clamping parts of the two clamping components is less than the radial dimension of the roller, the contact area between the electrode and the outer peripheral surface of the roller can be increased, improving the stability of the electrode and reducing the possibility of wrinkles. When the distance between the clamping parts of the two clamping components is equal to the radial dimension of the roller, the two free ends can be parallel, and the area where the two free ends extend to contact the roller is tangent to the roller, which is beneficial for tensioning the electrode and reducing the possibility of wrinkles.

[0015] In some embodiments, the clamping member includes a clamping portion and a pressure block, the pressure block being located on one side of the clamping portion along a second direction, the clamping portion having a clamping space for accommodating one end of the electrode sheet, and the pressure block being optionally able to apply pressure to the clamping portion so that the clamping portion clamps one end of the electrode sheet.

[0016] In the above technical solution, the above settings help to reduce the possibility of tilting when the clamping part clamps the electrode, thereby reducing the possibility of wrinkles on the electrode, and further reducing the possibility of uneven scratch depth of the coating layer caused by the wrinkles on the electrode, thus improving the stability of clamping and releasing the electrode.

[0017] In some embodiments, the clamping assembly further includes a transmission element, which includes a track and a rotating element. The rotating element is disposed on the track, and a driving element is connected to the clamping element through the rotating element. The driving element is used to drive the rotating element to rotate, thereby causing the clamping element to move along a first direction.

[0018] In the above technical solution, the inclusion of a rotating component improves the stability of the clamping component, reduces the possibility of vibration during electrode movement, and enhances the uniformity of scratch depth during powder scraping. The inclusion of a track ensures that the clamping component moves along a designated direction, reducing the possibility of electrode misalignment during reciprocating motion.

[0019] In some embodiments, the clamping assembly further includes a tensioner connected to the clamping member, the tensioner being used to drive the clamping member to move in a direction away from the roller body to tension the electrode sheet.

[0020] The above technical solution helps to reduce the possibility of wrinkles in the electrode during the powder scraping process and improves the uniformity of scratch depth.

[0021] In some embodiments, the scraper device further includes a support platform, the scraper and the first detection element are both disposed on the support platform, the scraper is fixedly connected to the detection end of the first detection element, and the scraper is movable relative to the support platform along a first direction.

[0022] In the above technical solution, by fixing the detection end and the scraper together, the possibility of the scraper's accuracy decreasing due to its own vibration is reduced, thereby improving the scraper's feed accuracy along the first direction.

[0023] In some embodiments, the first detection element includes a detection end, which is flush with the scraping portion of the scraper along a first direction.

[0024] In the above technical solution, by setting the scraping part and the detection end flush, it is beneficial to improve the actual powder scraping accuracy between the scraper and the coating surface, reduce the possibility of large errors between the detection results and the actual results due to the starting point calibration error, and improve the test results.

[0025] In some embodiments, the first detection element includes a contact sensor.

[0026] In the above technical solution, the contact sensor can directly contact the object being measured (coating layer), reducing the indirect errors caused by non-contact sensors due to issues such as detection distance and optical path offset. At the same time, during the powder scraping operation, some powder will fill the environment. The contact sensor can reduce the interference of powder in the environment on the detection results and improve the cutting accuracy of the scraper.

[0027] In some embodiments, the electrode powder scraping device further includes a second detection element, the second detection element, the clamping device and the scraper device are arranged circumferentially along the roller body, and the second detection element is used to detect the scratch depth of the coating layer of the electrode.

[0028] In the above technical solution, when faced with problems such as uneven coating thickness of the electrode sheet, there may be a problem that the scraper position is accurate but the scraping depth is still out of tolerance. The addition of the second detection component can directly detect the scraping depth. Through linkage with the first detection component and the clamping device, the scraping parameters can be corrected in real time, reducing the fluctuation range of the scraping depth and improving the scraping accuracy.

[0029] In a second aspect, this application provides a battery manufacturing apparatus, including an electrode powder scraping apparatus provided according to any embodiment of the first aspect.

[0030] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of an electrode powder scraping device provided in some embodiments of this application; Figure 2 Schematic diagrams of the structure of the electrode powder scraping device provided in some embodiments of this application; Figure 3 for Figure 2 A schematic diagram of the structure of Q; Figure 4 for Figure 2 Another structural diagram of Q; Figure 5 for Figure 2 Another structural diagram of Q; Figure 6 for Figure 1 A schematic diagram of the structure of P in the middle; Figure 7 for Figure 1 Another structural diagram of P.

[0033] The reference numerals in the accompanying drawings for the specific embodiments are as follows: 100, Electrode; 110, Coating layer; 120, Current collector; 10. Roller body; 11. Outer circumferential surface; 20. Clamping device; 21. First clamping assembly; 211. First driving member; 212. First clamping member; 212a. First holding part; 212b. First pressure block; 212c. First mounting platform; 213. First transmission member; 213a. First track; 213b. First rotating member; 22. Second clamping assembly; 221. Second driving member; 222. Second clamping member; 222a. Second holding part; 222b. Second pressure block; 222c. Second mounting platform; 223. Second transmission member; 223a. Second track; 223b. Second rotating member; 23. Tensioning member; 30. Scraper device; 31. Scraper; 311. Scraping section; 32. First inspection piece; 321. Inspection end; 33. Supporting platform; 34. Adjusting parts; 40. Second inspection item; 50. Receiving box; 60. Processing device; X, the first direction; Y, the second direction. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0036] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0039] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0040] In this application, "multiple" means two or more (including two).

[0041] Currently, judging from market trends, the application of battery devices is becoming increasingly widespread. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely applied 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 device applications, market demand is also constantly increasing.

[0042] In this embodiment of the application, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0043] The battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0044] After the electrode in the battery cell is coated, it needs to be dried. The adhesive in the coating layer will float to the surface of the coating layer during the drying process, resulting in insufficient adhesion between the coating layer and the current collector in the electrode, or even causing the coating layer to fall off in some areas, thereby reducing the reliability of the battery cell.

[0045] Based on this, a powder scraping process is needed on the coating surface to detect whether the binder content on the coating surface exceeds the standard, thereby determining whether the binder has floated to the surface, and thus completing the quality assessment of binder floatation in electrode coating. However, the current powder scraping process uses manual scraping, which makes it difficult to improve the scraping accuracy, resulting in a decline in the production quality of the electrode and consequently reducing the reliability of the battery cells.

[0046] To address the aforementioned technical issues, this application provides an electrode powder scraping device. By controlling the electrode transmission through a clamping device, the scraper moves in a single direction, thereby enabling the powder scraping operation on the electrode. By detecting the scraper's entry position, the entry accuracy is improved, thus enhancing the powder scraping accuracy, improving the production quality of the electrode, and ultimately improving the reliability of the battery cell.

[0047] In some examples, the battery cell includes a housing and electrode assemblies, with one or more electrode assemblies housed within the housing. The electrode assemblies have a stacked structure, for example, two stacked electrode assemblies are arranged in layers within the housing.

[0048] The electrode assembly includes a positive electrode, a negative electrode, and a separator stacked along the thickness direction of the battery cell.

[0049] From the shape of the electrode assembly, the electrode assembly includes a main body and a tab. The tab is connected to the main body and extends out of the main body along the length (or width) direction of the battery cell.

[0050] The main body includes a positive electrode portion and a negative electrode portion. The positive electrode portion includes a positive electrode current collector and a positive electrode active material layer disposed on at least one side of the positive electrode current collector. The negative electrode portion includes a negative electrode current collector and a negative electrode active material layer disposed on at least one side of the negative electrode current collector.

[0051] Optionally, the electrode includes a positive electrode and a negative electrode.

[0052] Optionally, the coating layer of the electrode may include an active material layer. For example, the coating layer of the positive electrode may include a positive active material layer. The coating layer of the negative electrode may include a negative active material layer.

[0053] Typically, when the coating layer is scraped off by a scraper, it is easily pulverized into powder. Of course, if the coating layer itself has good adhesion, it may also be in block form or a mixture of block and powder when scraped off. In this embodiment, the shape of the coating layer after being scraped off by the electrode powder scraping device is not limited. In this embodiment, the substance obtained after the coating layer is scraped off is referred to as a "sample".

[0054] In some examples, when the electrode is a negative electrode, the active material layer may contain active materials such as graphite, soft carbon, hard carbon, silicon suboxide, lithium titanate, and lithium metal. When the electrode is a positive electrode, the active material layer may contain active materials such as nickel-cobalt-manganese ternary materials, lithium nickel manganese oxide, lithium nickel oxide, lithium nickel cobalt aluminum oxide, and lithium iron phosphate. Typically, binders are also added to the active material layer. The binder used in the active material layer of the positive electrode may be polyvinylidene fluoride (PVDF), while the binder used in the active material layer of the negative electrode may be styrene-butadiene rubber (SBR), polytetrafluoroethylene (PX3FE), or aqueous polystyrene acrylate (PAA). In some cases, sodium carboxymethyl cellulose (CMC) may also be added to the active material layer of the negative electrode. The functions of each component are common knowledge in the art and will not be elaborated upon here.

[0055] The current collector of the electrode is a conductive structure used to electrically connect to an external circuit, allowing electrons to flow between the coating layer and the external circuit, thereby enabling charging and discharging of the external circuit. Typically, the current collector is made of metal, such as copper or aluminum. Of course, the current collector can also be a composite structure formed from polymer and metal materials, as long as it can achieve its conductive function. The specific type of current collector can be determined according to the conventional practices of those skilled in the art.

[0056] In the preparation of the electrode, the process of forming the active material layer (i.e., coating layer) on the current collector is roughly as follows: the active material, solvent, binder and other components are mixed to form a coating slurry, and then the coating slurry is coated on the current collector by casting, coating and other methods. After drying, cold pressing and other treatments, the electrode is obtained.

[0057] The "adhesive floating" mentioned in this application refers to the phenomenon where, during the coating process, due to the influence of slurry characteristics, coating speed, drying rate, etc., the adhesive in the coating layer floats to varying degrees in the thickness direction of the coating layer; that is, the adhesive migrates from the substrate to the top of the coating layer. When the degree of adhesive floating is large, the substrate of the coating layer cannot effectively bond with the current collector, and the coating layer is prone to detaching from the current collector, affecting the quality of the electrode. The adhesive floating degree detection method provided in this application is used to detect the degree of adhesive floating in the electrode coating layer, so as to obtain the quality status of the electrode and promptly identify unqualified electrode layers.

[0058] Figure 1 This is a schematic diagram of the structure of an electrode powder scraping device provided in some embodiments of this application. Figure 2 This is a schematic diagram of the structure of an electrode powder scraping device provided in some embodiments of this application. Figure 3 for Figure 2 A schematic diagram of a structure of Q. Figure 4 for Figure 2Another structural diagram of Q. Figure 5 for Figure 2 Another structural diagram of Q. Figure 3 This is a schematic diagram showing the contact between the scraper device and the surface of the coating layer. Figure 4 This is a schematic diagram of a scraper device performing a single powder scraping operation. Figure 5 This is a schematic diagram of the scraper device performing two powder scraping operations.

[0059] The electrode powder scraping device provided in the embodiments of this application will be described in detail below.

[0060] Please refer to the following: Figures 1 to 5 According to some embodiments of this application, this application provides an electrode powder scraping device, which includes a roller body 10, a clamping device 20, and a scraper device 30. The roller body 10 has an outer peripheral surface 11. The clamping device 20 is used to clamp the electrode 100 and drive the electrode 100 to move on the outer peripheral surface 11. The scraper device 30 is located on one side of the roller body 10 in the radial direction and is spaced apart from the clamping device 20 along the circumference of the roller body 10. The scraper device 30 includes a scraper 31 and a first detection element 32. The scraper 31 is used to act on the electrode 100 on the outer peripheral surface 11. The scraper 31 is movably arranged along a first direction X. The first detection element 32 is used to detect the position of the scraper 31 along the first direction X. The axial direction of the roller body 10 intersects with the first direction X.

[0061] The roller body 10 is a cylindrical or cylindrical structure arranged in a rotating manner around a rotation axis. The roller body 10 can be a plastic roller, a metal roller, etc. Typically, the outer peripheral surface 11 of the roller body 10 can be a surface surrounding the rotation axis. At least a portion of the outer peripheral surface 11 can be used to bond with the electrode 100.

[0062] In some examples, the roller 10 can be a rotatable structure, meaning the roller 10 has a rotation axis that is rotatably mounted on a support structure. The rotation of the rotation axis under external force enables the roller 10 to rotate. Optionally, the rotation axis of the roller 10 is its axis of rotation. In other examples, the roller 10 can be a fixed structure, meaning the roller 10 will not rotate under external force.

[0063] The clamping device 20 can clamp the electrode 100 to ensure that the electrode 100 can adhere to the outer peripheral surface 11 of the roller 10. Exemplarily, the electrode 100 includes two free ends, and the clamping device 20 can clamp each of the two free ends to keep the electrode 100 in contact with the outer peripheral surface 11. Here, "adhering to contact" means that the electrode 100 and the outer peripheral surface 11 are in contact and the shape of the electrode 100 matches the shape of the outer peripheral surface 11. Typically, at least a portion of one surface of the electrode 100 in its thickness direction remains in contact with the outer peripheral surface 11. In practical applications, the scraper device 30 mainly performs a scraping operation on the portion of the electrode 100 adhered to the outer peripheral surface 11. It is understood that when the electrode 100 is adhered to the outer peripheral surface 11, the coating layer 110 of the electrode 100 to be scraped is positioned away from the outer peripheral surface 11.

[0064] Optionally, the electrode 100 may include a current collector 120 and a coating layer 110 located on the surface of the current collector 120. In some examples, the coating layer 110 is provided on both sides of the current collector 120 along its thickness direction. When the electrode 100 is attached to the outer peripheral surface 11, the coating layer 110 on one side of the current collector 120 remains attached to the outer peripheral surface 11, while the coating layer 110 on the other side of the current collector 120 is used to perform a powder scraping operation. In other examples, the coating layer 110 is provided on one side of the current collector 120 along its thickness direction. When the electrode 100 is attached to the outer peripheral surface 11, the current collector 120 is attached to the outer peripheral surface 11, and the coating layer 110 is located on the side of the current collector 120 facing away from the outer peripheral surface 11. The coating layer 110 is used to perform a powder scraping operation.

[0065] The clamping device 20 can drive the electrode 100 to move on the outer peripheral surface 11, thereby driving the electrode 100, which is attached to the outer peripheral surface 11, to move around the axis of rotation, so that each region of the electrode 100 along its own length direction passes through the outer peripheral surface 11 of the roller 10. Optionally, when the electrode 100 is used in a wound electrode assembly, the length direction of the electrode 100 corresponds to the winding direction of the electrode. When the electrode 100 is used in a stacked electrode assembly, the length direction of the electrode 100 corresponds to the length direction of the electrode. Understandably, the width direction, length direction, and thickness direction of the electrode 100 are perpendicular to each other. Optionally, the clamping device 20 can drive the electrode 100 to rotate in a single direction on the outer peripheral surface 11. The clamping device 20 can also drive the electrode 100 to reciprocate on the outer peripheral surface 11.

[0066] The scraper device 30 is a device capable of performing a powder scraping operation on the electrode 100, used to perform a powder scraping operation on the electrode 100 attached to the outer peripheral surface 11. Typically, the scraper device 30 includes a scraper 31, which acts on the electrode 100 on the outer peripheral surface 11, meaning that the scraper 31 can scrape off a portion of the coating layer 110 from the electrode 100. Specifically, the clamping device 20 drives the electrode 100 to move around the axis of rotation, and the area of ​​the coating layer 110 in contact with the scraper 31 is partially scraped off by the scraper 31. As the electrode 100 moves, the area scraped by the scraper 31 gradually increases along the length direction of the electrode 100, thereby performing a powder scraping operation on the surface of the coating layer 110 in a predetermined area. When the clamping device 20 drives the electrode 100 to move along the outer peripheral surface 11, the scraper 31 can remain stationary. After the electrode 100 completes the transmission and stops, the scraper 31 can move along the first direction X toward the electrode 100 to increase the depth of scraping the coating layer 110 and improve the accuracy of the scratch depth. Of course, when the clamping device 20 drives the electrode 100 to move along the first direction X toward the electrode 100, the scraping area and scraping depth in the coating layer 110 will increase simultaneously, thereby improving the powder scraping efficiency.

[0067] The scraper device 30 is located on one side of the roller body 10 in the radial direction. This means that the scraper 31 in the scraper device 30 is arranged opposite to the outer peripheral surface 11 of the roller body 10 to perform a powder scraping operation on the electrode sheet 100 attached to the outer peripheral surface 11.

[0068] The scraper device 30 and the clamping device 20 are spaced apart along the circumference of the roller body 10, meaning there is a distance between them along the circumference of the roller body 10. For example, the scraper device 30 and the clamping device 20 are respectively located on opposite sides of the roller body 10, or the scraper device 30 is located on one side of the roller body 10 along the first direction X, and the clamping device 20 is located on one side of the roller body 10 along the second direction Y. Optionally, the axial direction of the roller body 10, the first direction X, and the second direction Y intersect each other.

[0069] The scraper 31 is movable along the first direction X, meaning that the scraper 31 can move closer to or further away from the electrode 100 attached to the outer peripheral surface 11 along the first direction X. For example, when performing a powder scraping operation, the scraper 31 moves closer to the electrode 100 attached to the outer peripheral surface 11 along the first direction X; when it needs to be restored to its original position after the powder scraping operation is completed, the scraper 31 moves away from the electrode 100 attached to the outer peripheral surface 11 along the first direction X.

[0070] The first detection element 32 is used to detect the position of the scraper 31 along the first direction X. This means that the first detection element 32 can detect the depth to which the scraper 31 scrapes off the coating layer 110. For example, the contact position between the scraper 31 and the surface of the coating layer 110 is set as the origin. The scraper 31 moves along the first direction X towards the electrode 100. The scraper 31 penetrates into the coating layer 110. The distance between the position of the scraper 31 after moving along the first direction X and the origin can be the depth of the coating layer 110 scraped off by the scraper 31.

[0071] The axial direction of the roller body 10 is intersecting the first direction X. Optionally, the axial direction of the roller body 10 is perpendicular to the first direction X.

[0072] In the electrode powder scraping equipment provided in this embodiment, the clamping device 20 can clamp and control the transmission of the electrode 100. Combined with the supporting effect of the roller 10 on the electrode 100, it ensures that the electrode 100 remains flat and stable during the powder scraping process, improving the consistency of powder scraping quality. The scraper 31 moves in a single direction, and the position of the scraper 31 is detected by the first detection element 32, realizing precise detection and control of the scraper 31 position, improving the powder scraping accuracy, effectively reducing the possibility of excessively shallow or deep scratches caused by the position deviation of the scraper 31, improving the accuracy of the detection results of the quality of the adhesive floating in the electrode 100, improving the production quality of the electrode 100, and improving the reliability of the battery cell.

[0073] Please see Figure 1 In some alternative embodiments, the clamping device 20 and the scraper device 30 are respectively disposed on both sides of the roller body 10 along the first direction X.

[0074] For example, taking the rotation axis of the roller 10 as a reference, two opposing straight lines extend along the first direction X to both sides of the roller 10 (e.g., the positive direction of the first direction X and the negative direction of the first direction X). The clamping device 20 is located on the side of the roller 10 facing the positive direction of the first direction X, and the scraper device 30 is located on the side of the roller 10 facing the negative direction of the first direction X. Both are installed at a preset distance from the outer circumferential surface 11 of the roller 10: the spacing of the clamping device 20 must ensure that after clamping the free end of the electrode, it can stably drive the electrode to adhere to the outer circumferential surface 11 of the roller 10; the spacing of the scraper device 30 must be adapted to its adjustment range along the first direction X to ensure that the scraper 31 can smoothly approach the electrode to complete the powder scraping operation.

[0075] In these alternative embodiments, the above-described arrangement helps to reduce mutual interference between the clamping device 20 and the scraper device 30 during operation. The slight vibrations generated when the clamping device 20 drives the electrode 100 are mitigated by positioning the clamping device 20 and the scraper device 30 on opposite sides of the roller body 10, thereby reducing the possibility that slight vibrations may cause the scraper 31 to shift position, affecting the powder scraping accuracy.

[0076] Please see Figures 1 to 5 In some alternative embodiments, the clamping device 20 includes two clamping components, which are spaced apart along the second direction Y. The axial direction, the first direction X, and the second direction Y intersect each other. The two clamping components are used to clamp the two ends of the electrode 100 respectively, and the clamping device 20 is configured such that the two clamping components drive the electrode 100 to reciprocate on the outer peripheral surface 11.

[0077] The two clamping components refer to two clamping units that constitute the clamping device 20. The two clamping components can be controlled independently or in conjunction. Under external force, the two clamping components can drive the electrode 100 to reciprocate on the outer peripheral surface 11. The two clamping components can also be equipped with drive modules to drive the clamping components to move, causing the electrode 100 to reciprocate on the outer peripheral surface 11. For example, through the coordinated operation of the drive modules of the two clamping components, when the electrode 100 is driven to a preset position (such as the end of the scraping area), the two clamping components move synchronously in opposite directions, driving the electrode 100 to move circumferentially in the opposite direction along the outer peripheral surface 11 of the roller 10 (such as returning from the "3 o'clock direction" to the "12 o'clock direction" at the end of the scraping area), forming a reciprocating path. This embodiment does not limit the number of reciprocations, as long as the scraping depth is guaranteed.

[0078] Optionally, the electrode 100 can be fitted to half the circumference of the roller 10. For example, the distance between the two free ends of the electrode 100 is equal to the radial dimension of the roller 10. The arrangement direction of the two free ends of the electrode 100 can be parallel to the second direction Y, the axial direction can be parallel to the width direction of the electrode 100, and the first direction X can be parallel to the length direction of the free ends.

[0079] In these alternative embodiments, by setting two clamping components and driving the electrode 100 to reciprocate, the coating layer 110 can be scraped multiple times. Samples scraped multiple times can be collected and verified in batches, improving the accuracy of the test results for the quality of the adhesive floating in the electrode 100. At the same time, the reciprocating motion combined with the movement of the scraper 31 along the first direction X allows for adjustment of the scraping depth (e.g., a shallower scraping depth for the first reciprocating motion, and a deeper scraping depth for the second reciprocating motion by finely adjusting the position of the scraper 31), further improving the scraping accuracy.

[0080] Please see Figure 1 and Figure 2 In some alternative embodiments, the clamping assembly includes a drive member and a clamping member, the drive member being tractively connected to the clamping member, the drive member being used to drive the clamping member to move along a first direction X, and the clamping member being used to clamp one end of the electrode 100.

[0081] Exemplarily, the two clamping components can be a first clamping component 21 and a second clamping component 22. The first clamping component 21 includes a first clamping member 212 and a first driving member 211. The second clamping component 22 may include a second clamping member 222. Optionally, the first clamping member 212 and the second clamping member 222 can be controlled by the first driving member 211. Of course, the second clamping component 22 may include a second driving member 221, whereby the first driving member 211 controls the first clamping member 212 to move along a first direction X, and the second driving member 221 controls the second clamping member 222 to move along the first direction X.

[0082] For example, the first clamping member 212 and the second clamping member 222 respectively clamp the two ends of the electrode 100.

[0083] Alternatively, the clamping element can be a gripper.

[0084] Optionally, the driving component may include a drive motor.

[0085] The driving component and the clamping component can be directly connected by transmission, or they can be indirectly connected by transmission components.

[0086] In these alternative embodiments, the clamping members in the two clamping assemblies reciprocate in a single direction under the drive of the driving member, thereby enabling the electrode 100 to reciprocate on the outer peripheral surface 11, which simplifies the driving method of the clamping members, simplifies the overall motion structure, and reduces the manufacturing cost of the powder scraping device.

[0087] Please see Figure 1 and Figure 3 In some alternative embodiments, the clamping member includes a clamping portion along the second direction Y, and the distance between the clamping portions of the two clamping assemblies is less than or equal to the radial dimension of the roller body 10.

[0088] The clamping part refers to the structure in the clamping member used to clamp the electrode 100. Along the second direction Y, the distance between the clamping parts in the two clamping assemblies is... Figure 3 The distance D between the two free ends of the electrode 100 along the second direction Y is shown. When the distance between the clamping parts of the two clamping assemblies is less than the radial dimension of the roller body 10, the contact area between the electrode 100 and the outer peripheral surface 11 of the roller body 10 can be increased, improving the stability of the electrode 100 and reducing the possibility of wrinkles in the electrode 100. When the distance between the clamping parts of the two clamping assemblies is equal to the radial dimension of the roller body 10, the two free ends can be made parallel, and the area where the two free ends extend to contact the roller body 10 is tangent to the roller body 10, which is beneficial for tensioning the electrode 100 and reducing the possibility of wrinkles in the electrode 100.

[0089] Figure 6 for Figure 1 A schematic diagram of a structure of P. Figure 7 for Figure 1 Another structural diagram of P. Figure 6 This is a schematic diagram showing that the first pressing block 212b does not apply pressure to the first clamping part 212a. Figure 7 This is a schematic diagram showing the first pressure block 212b applying pressure to the first clamping part 212a.

[0090] Please see Figure 1 , Figure 6 and Figure 7 In some optional embodiments, the clamping member includes a clamping part and a pressing block. The pressing block is located on one side of the clamping part along the second direction Y. The clamping part is provided with a clamping space for accommodating one end of the electrode 100. The pressing block can selectively press the clamping part so that the clamping part clamps one end of the electrode 100.

[0091] Exemplarily, the first clamping member 212 includes a first clamping portion 212a and a first pressing block 212b. Optionally, when there is one first pressing block 212b, the first pressing block 212b is located on one side of the first clamping portion 212a along the second direction Y. For example, the first pressing block 212b is located on the side of the first clamping portion 212a opposite to the second clamping assembly 22. When there are two first pressing blocks 212b, the two first pressing blocks 212b are respectively located on both sides of the first clamping portion 212a along the second direction Y.

[0092] Exemplarily, the second clamping member 222 includes a second clamping portion 222a and a second pressure block 222b. Optionally, when there is one second pressure block 222b, the second pressure block 222b is located on one side of the second clamping portion 222a along the second direction Y. For example, the second pressure block 222b is located on the side of the second clamping portion 222a opposite to the first clamping assembly 21. When there are two second pressure blocks 222b, the two second pressure blocks 222b are respectively located on both sides of the second clamping portion 222a along the second direction Y.

[0093] For example, the first clamping part 212a is provided with a first clamping space for accommodating one end of the electrode 100. The second clamping part 222a is provided with a second clamping space for accommodating the other end of the battery electrode.

[0094] The pressure block can selectively apply pressure to the clamping portion, that is, the pressure block can squeeze the clamping portion along the second direction Y to deform the clamping portion, thereby reducing the clamping space so that the clamping space can clamp one end of the electrode 100. Of course, the pressure block can also move away from the clamping portion along the second direction Y, thereby increasing the clamping space so that the clamping space can release one end of the electrode 100.

[0095] In these alternative embodiments, the above-described configuration helps to reduce the likelihood of tilting when the clamping portion clamps the electrode 100, thereby reducing the likelihood of wrinkles forming on the electrode 100. This, in turn, reduces the likelihood of uneven scratch depth on the coating layer 110 caused by wrinkles on the electrode 100, and improves the stability of clamping and releasing the electrode 100.

[0096] Please see Figure 1 and Figure 2 In some optional embodiments, the clamping assembly further includes a transmission component, which includes a track and a rotating component. The rotating component is disposed on the track, and a driving component is connected to the clamping component through the rotating component. The driving component is used to drive the rotating component to rotate, thereby causing the clamping component to move along the first direction X.

[0097] The transmission component includes a rotating component and a track, which extends along a first direction X. The rotating component can rotate on the track to change its position. As the rotating component rotates, it can drive the clamping component to move along the first direction X. Optionally, the clamping component may include a gripper and a mounting platform. The gripper is mounted on a mounting platform, and the rotating component is disposed between the mounting platform and the track. When the rotating component rotates, it can drive the mounting platform to move relative to the track along the first direction X, thereby driving the gripper to move. Optionally, the gripper forms a clamping portion. Optionally, the first clamping component 212 includes a first mounting platform 212c. The first clamping portion 212a is disposed on the first mounting platform 212c. The second clamping component 222 includes a second mounting platform 222c. The second clamping portion 222a is disposed on the second mounting platform 222c.

[0098] Alternatively, the rotating element may include a roller.

[0099] For example, the transmission component in the first clamping assembly 21 is a first transmission component 213. The first transmission component 213 includes a first track 213a and a first rotating component 213b. The rotation of the first transmission component 213 can drive the first clamping component 212 to move relative to the first track 213a along the first direction X.

[0100] For example, the transmission component in the second clamping assembly 22 is the second transmission component 223, which includes a second track 223a and a second rotating component 223b. The rotation of the second transmission component 223 can drive the second clamping component 222 to move relative to the second track 223a along the first direction X.

[0101] In these alternative embodiments, the inclusion of a rotating component improves the stability of the clamping component, reduces the likelihood of vibration during electrode 100 movement, and enhances the uniformity of scratch depth during powder scraping. The inclusion of a track ensures that the clamping component moves along a designated direction, reducing the possibility of electrode 100 shifting during reciprocating motion.

[0102] Please see Figure 1 In some alternative embodiments, the clamping assembly further includes a tensioner 23 connected to the clamping member, which is used to drive the clamping member to move in a direction away from the roller body 10 to tension the electrode 100.

[0103] Optionally, the tensioning member 23 can be mounted on the mounting platform and connected to the gripper. The tensioning member 23 can drive the gripper to move relative to the mounting platform along the first direction X, thereby increasing the distance between the gripper and the roller body 10, and thus tensioning the electrode 100. Of course, the tensioning member 23 can also drive the clamping member to move relative to the rotating member along the first direction X, thereby increasing the distance between the clamping member and the roller body 10, and thus tensioning the electrode 100.

[0104] For example, when the two clamping components clamp the two ends of the electrode 100, although the electrode 100 is clamped, it is slightly relaxed due to its own flexible storage (for example, the free end of the electrode 100 and the middle area between the electrode 100 and the contact area with the outer peripheral surface 11 sag slightly). The tensioning member 23 can drive the clamping member (or gripper) to move away from the roller body 10. The two ends of the electrode 100 will move away from the roller body 10 simultaneously. Since the two ends of the electrode 100 are fixedly clamped, the middle area will be straightened, changing from "relaxed and sagming" to "tight and flat". Ultimately, the electrode 100 is tightly attached to the outer peripheral surface 11 of the roller body 10, and the surface of the electrode 100 is free of wrinkles and local relaxation. Optionally, the powder scraping operation can be performed after the electrode 100 is tensioned.

[0105] It should be noted that "tensioning" is not "excessive stretching". For example, the driving force of the tensioning element 23 is 0-0.05N. This application embodiment does not limit this, as long as it can ensure that the electrode 100 reaches a "non-slack" taut state.

[0106] The embodiments of this application, through the above-described settings, help to reduce the possibility of wrinkles forming on the electrode 100 during the powder scraping operation and improve the uniformity of the scratch depth.

[0107] Please see Figure 1 and Figure 2 In some optional embodiments, the scraper device 30 further includes a support platform 33, and the scraper 31 and the first detection element 32 are both disposed on the support platform 33. The scraper 31 is fixedly connected to the detection end 321 of the first detection element 32, and the scraper 31 is movable relative to the support platform 33 along the first direction X.

[0108] The support platform 33 can provide installation space for the scraper 31 and the first detection element 32 so that the scraper 31 and the first detection element 32 can be subjected to the same external load, thereby improving the detection accuracy of the first detection element 32.

[0109] The detection end 321 of the first detection element 32 is used to detect the position of the scraper 31 along the first direction X. The detection end 321 and the scraper 31 are fixedly connected so that when the scraper 31 moves along the first direction X, the detection end 321 and the scraper 31 can move synchronously.

[0110] The scraper 31 is movable relative to the support platform 33 along the first direction X. For example, the support platform 33 is provided with a drive module, which is used to drive the scraper 31 to move along the first direction X.

[0111] Optionally, the support platform 33 may also be provided with an adjustment component 34, which can drive the support platform 33 (or the scraper 31) to move along the first direction X to the position where the scraper 31 contacts the surface of the coating layer 110, and mark this position as the zero point so that the first detection element 32 can determine the position of the scraper 31 and the distance that the scraper 31 needs to move along the first direction X towards the coating layer 110 during detection.

[0112] In these alternative embodiments, by fixing the detection end 321 and the scraper 31 together, the possibility of the scraper 31 becoming less accurate due to its own vibration is reduced, thereby improving the cutting accuracy of the scraper 31 along the first direction X.

[0113] Please continue reading. Figures 1 to 3 In some optional embodiments, the first detection element 32 includes a detection end 321, which is flush with the scraping portion 311 of the scraper 31 along the first direction X.

[0114] The scraping portion 311 of the scraper 31 refers to the structure of the scraper 31 used to contact the coating layer 110 and scrape off a portion of the coating layer 110. For example, the scraping portion 311 is a cutting edge.

[0115] The fact that the detection end 321 and the scraping part 311 are flush along the first direction X means that when the scraping part 311 contacts the coating layer 110, the detection end 321 also contacts the coating layer 110, and the position of contact of the scraping part 311 is the same as the position of contact of the detection end 321.

[0116] In these alternative embodiments, by setting the scraping part 311 and the detection end 321 flush, it is beneficial to improve the actual powder scraping accuracy between the scraper 31 and the surface of the coating layer 110, reduce the possibility of large errors between the detection results and the actual results due to the starting point calibration error, and improve the test results.

[0117] In some alternative embodiments, the first detection element 32 includes a contact sensor.

[0118] For example, the detection end 321 of the first detection element 32 is the contact end of a contact sensor. Before performing the powder scraping operation, the electrode 100 is clamped and tensioned using two clamping components. The scraper 31 and the first detection element 32 move along the first direction X to a position where they contact the surface of the coating layer 110 of the electrode 100. The first detection element 32 signals contact, and the bearing platform 33 is calibrated as the origin. Then, the clamping components are controlled to drive the electrode 100 to reciprocate along the track and the outer peripheral surface 11 of the roller 10. Driven by the drive module of the bearing platform 33, the scraper 31 gradually moves towards the electrode 100 to a specified preset position, thereby scraping off the powder to the set depth of the coating layer 110. Optionally, the scraped powder can be collected by the collection box 50, and the collected powder is sent to the testing machine as a sample for testing, thereby realizing the powder scraping operation of the coating layer 110 of the electrode 100. Optionally, the collection box 50 can be located below the scraper 31.

[0119] In these alternative embodiments, the contact sensor can directly contact the object being measured (coating layer 110), reducing the indirect errors caused by non-contact sensors due to issues such as detection distance and optical path offset. At the same time, during the powder scraping operation, some powder will fill the environment, and the contact sensor can reduce the interference of powder in the environment on the detection results and improve the cutting accuracy of the scraper 31.

[0120] Please see Figure 1 and Figure 2 In some optional embodiments, the electrode powder scraping device further includes a second detection element 40. The second detection element 40, the clamping device 20 and the scraper device 30 are arranged at intervals along the circumference of the roller body 10. The second detection element 40 is used to detect the scratch depth of the coating layer 110 of the electrode 100.

[0121] Optionally, the second detection element 40 may include a visual detection element. For example, the visual detection element is used to emit light and receive feedback wavelengths, which are converted into electrical signals and then calculated by the processing device 60 to display the scratch depth of the electrode 100.

[0122] The second detection element 40, the clamping device 20, and the scraper device 30 are arranged at intervals along the circumference of the roller body 10, meaning that there is a distance between them along the circumference of the roller body 10. For example, the scraper device 30 and the clamping device 20 are respectively located on opposite sides of the roller body 10 along the first direction X, and the second detection element 40 is located on one side of the roller body 10 along the second direction Y. Of course, the positions of the scraper device 30, the clamping device 20, and the second detection element 40 can be adjusted arbitrarily, and this application embodiment does not limit this, as long as it can ensure that the three do not interfere with each other.

[0123] In some examples, the electrode powder scraping device further includes a processing unit 60, which can communicate with a second detection element 40 to control the movement of the scraper 31 based on the scraping depth detected by the second detection element 40. Optionally, the processing unit 60 can communicate with a first detection element 32 to control the cutting depth of the scraper 31 based on the position of the scraper 31 along a first direction X detected by the first detection element 32. Optionally, the processing unit 60 can communicate with a pressure block to control the pressure block to pressurize or release the clamping portion. For example, the processing unit 60 can communicate with a first pressure block 212b, and the processing unit 60 can also communicate with a second pressure block 222b; of course, the processing unit 60 can communicate with both the first pressure block 212b and the second pressure block 222b.

[0124] The first detection element 32 is used to detect the position of the scraper 31 along the first direction X. In some examples, when facing problems such as uneven thickness of the coating layer 110 of the electrode 100, there may be a problem that the scraper 31 is in a precise position but the scratch depth is still out of tolerance. The addition of the second detection element 40 can directly detect the scratch depth. Through linkage with the first detection element 32 and the clamping device 20, the scraping parameters are corrected in real time, reducing the fluctuation range of the scratch depth and improving the scraping accuracy.

[0125] According to some embodiments of this application, this application provides a battery production system, including the electrode powder scraping equipment provided in any of the above embodiments.

[0126] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application.

[0127] Please refer to the following: Figures 1 to 5 This application provides an electrode powder scraping device, which includes a roller body 10, a clamping device 20, and a scraper device 30. The roller body 10 has an outer peripheral surface 11. The clamping device 20 is used to clamp the electrode 100 and drive the electrode 100 to move on the outer peripheral surface 11. The scraper device 30 is located on one side of the roller body 10 in the radial direction and is spaced apart from the clamping device 20 along the circumference of the roller body 10. The scraper device 30 includes a scraper 31 and a first detection element 32. The scraper 31 is used to act on the electrode 100 on the outer peripheral surface 11. The scraper 31 is movably arranged along a first direction X. The first detection element 32 is used to detect the position of the scraper 31 along the first direction X. The axial direction of the roller body 10 intersects with the first direction X.

[0128] The clamping device 20 and the scraper device 30 are respectively disposed on both sides of the roller body 10 along the first direction X. The clamping device 20 includes two clamping components, which are spaced apart along the second direction Y. The axial direction, the first direction X and the second direction Y intersect each other. The two clamping components are used to clamp the two ends of the electrode 100 respectively, and the clamping device 20 is configured such that the two clamping components drive the electrode 100 to reciprocate on the outer peripheral surface 11.

[0129] The clamping assembly includes a driving member and a clamping member. The driving member is pulsatorically connected to the clamping member. The driving member is used to drive the clamping member to move along a first direction X. The clamping member is used to clamp one end of the electrode 100. The clamping member includes a clamping portion along a second direction Y. The distance between the clamping portions of two clamping assemblies is less than or equal to the radial dimension of the roller body 10.

[0130] The clamping member includes a clamping part and a pressure block. The pressure block is located on one side of the clamping part along the second direction Y. The clamping part is provided with a clamping space for accommodating one end of the electrode 100. The pressure block can selectively apply pressure to the clamping part so that the clamping part clamps one end of the electrode 100.

[0131] The clamping assembly also includes a transmission component, which includes a track and a rotating component. The rotating component is disposed on the track, and a driving component is connected to the clamping component through the rotating component. The driving component is used to drive the rotating component to rotate, thereby causing the clamping component to move along the first direction X.

[0132] The clamping assembly also includes a tensioner 23, which is connected to the clamping member and is used to drive the clamping member to move in a direction away from the roller body 10 to tension the electrode 100.

[0133] The scraper device 30 also includes a support platform 33. The scraper 31 and the first detection element 32 are both disposed on the support platform 33. The scraper 31 is fixedly connected to the detection end 321 of the first detection element 32. The scraper 31 is movable relative to the support platform 33 along the first direction X.

[0134] The first detection element 32 includes a detection end 321, which is flush with the scraping portion 311 of the scraper 31 along the first direction X. The first detection element 32 includes a contact sensor.

[0135] The electrode powder scraping equipment also includes a second detection element 40. The second detection element 40, the clamping device 20 and the scraper device 30 are arranged at intervals along the circumference of the roller body 10. The second detection element 40 is used to detect the scratch depth of the coating layer 110 of the electrode 100.

[0136] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features. However, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An electrode powder scraping device, characterized in that, include: The roller body has an outer peripheral surface; A clamping device for clamping the electrode and driving the electrode to move on the outer peripheral surface; A scraper device is located on one side of the radial direction of the roller body and is spaced apart from the clamping device along the circumference of the roller body. The scraper device includes a scraper and a first detection element. The scraper is used to act on the electrode on the outer circumferential surface. The scraper is movable along a first direction. The first detection element is used to detect the position of the scraper along the first direction. The axial direction of the roller body intersects with the first direction.

2. The electrode powder scraping device according to claim 1, characterized in that, The clamping device and the scraper device are respectively located on both sides of the roller body along the first direction.

3. The electrode powder scraping device according to claim 1 or 2, characterized in that, The clamping device includes two clamping components, which are spaced apart along a second direction. The axial direction, the first direction, and the second direction intersect each other. The two clamping components are used to clamp the two ends of the electrode, and the clamping device is configured such that the two clamping components drive the electrode to reciprocate on the outer peripheral surface.

4. The electrode powder scraping device according to claim 3, characterized in that, The clamping assembly includes a driving member and a clamping member. The driving member is convexly connected to the clamping member. The driving member is used to drive the clamping member to move along the first direction. The clamping member is used to clamp one end of the electrode sheet.

5. The electrode powder scraping device according to claim 4, characterized in that, The clamping member includes a clamping portion, and along the second direction, the distance between the clamping portions of the two clamping assemblies is less than or equal to the radial dimension of the roller.

6. The electrode powder scraping device according to claim 4, characterized in that, The clamping member includes a clamping part and a pressure block. The pressure block is located on one side of the clamping part along the second direction. The clamping part is provided with a clamping space for accommodating one end of the electrode sheet. The pressure block can selectively apply pressure to the clamping part so that the clamping part clamps one end of the electrode sheet.

7. The electrode powder scraping device according to claim 4, characterized in that, The clamping assembly further includes a transmission component, which includes a track and a rotating component. The rotating component is disposed on the track, and the driving component is connected to the clamping component through the rotating component. The driving component is used to drive the rotating component to rotate, thereby causing the clamping component to move along the first direction.

8. The electrode powder scraping device according to claim 4, characterized in that, The clamping assembly further includes a tensioning member connected to the clamping member, the tensioning member being used to drive the clamping member to move in a direction away from the roller body to tension the electrode sheet.

9. The electrode powder scraping device according to claim 1 or 2, characterized in that, The scraper device further includes a support platform, and the scraper and the first detection element are both disposed on the support platform. The scraper is fixedly connected to the detection end of the first detection element, and the scraper is movable relative to the support platform along the first direction.

10. The electrode powder scraping device according to claim 1 or 2, characterized in that, The first detection element includes a detection end, which is flush with the scraping portion of the scraper along the first direction.

11. The electrode powder scraping device according to claim 1 or 2, characterized in that, The first detection element includes a contact sensor.

12. The electrode powder scraping device according to claim 1 or 2, characterized in that, The electrode powder scraping device further includes a second detection element. The second detection element, the clamping device, and the scraper device are arranged at intervals along the circumference of the roller body. The second detection element is used to detect the scratch depth of the coating layer of the electrode.

13. A battery production system, characterized in that, Includes the electrode powder scraping device as described in any one of claims 1 to 12.

Images