Marking method, marking device, and pole piece manufacturing system

Abstract

The application provides a marking method, a marking device and a pole piece manufacturing system, and relates to the technical field of batteries. The marking method is used for marking a target piece, the target piece comprises a base material and a coating layer coated on the surface of the base material, and the marking method comprises the following steps: sticking the coating layer of a marking area of the target piece away from the target piece, so that a trace line is formed on the target piece in the marking area. By sticking the coating layer of the marking area away, the coating layer is not present in the marking area or the thickness of the coating layer in the marking area is smaller than that of other positions, so that the trace line is formed in the marking area. The coating layer of the marking area is stuck away from the base material by the sticking mode, so that the trace line is formed. The target piece does not have a heat affected zone generated when the target piece is marked by a laser, and the quality of the coating layer is not affected, so that the marking quality can be improved. Moreover, the marking efficiency is high and the marking cost is low.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and more specifically, to a marking method, marking apparatus, and electrode manufacturing system. Background Technology

[0002] Batteries are widely used in electronics, vehicles, aerospace, and other fields. As application environments and conditions become increasingly complex, higher demands are being placed on battery safety, energy density, and production costs.

[0003] In the battery manufacturing process, it is necessary to mark the electrodes so that they can be folded along the marked lines. The quality of the marking on the electrodes has a significant impact on the quality of the electrodes, the quality of the batteries, and the production cost. Therefore, how to improve the quality of the marking on the electrodes has become an urgent problem to be solved in the battery manufacturing process. Summary of the Invention

[0004] This application provides a marking method, marking apparatus, and electrode manufacturing system to improve the marking quality of electrode sheets.

[0005] In a first aspect, embodiments of this application provide a marking method for marking a target part, the target part comprising a substrate and a coating applied to the surface of the substrate, the marking method comprising:

[0006] The coating is adhered to the marking area of ​​the target part so that the target part forms a marking line in the marking area.

[0007] In the above technical solution, by adhering the coating in the marking area, the marking area is either uncoated or has a coating thickness less than that in other areas, thus forming a marking line. The marking line is formed by adhering the coating in the marking area to the substrate. Since the target part does not have a heat-affected zone generated during laser marking, the coating quality is not affected, thus improving the marking quality. Furthermore, the marking efficiency is high and the marking cost is low.

[0008] In some embodiments of the first aspect of this application, the coating that adheres to the marking area of ​​the target part includes:

[0009] The adhesive component is attached to the marking area of ​​the target component by moving the clamping mechanism relative to the target component in a preset direction.

[0010] Remove the adhesive piece from the marking area to separate the coating of the marking area from the substrate.

[0011] In the above technical solution, by moving the clamping mechanism relative to the target part in a preset direction, the adhesive part can be firmly adhered to the coating, which is beneficial for the coating to detach from the substrate. The movement of the clamping mechanism in the preset direction ensures that the adhesive part is firmly adhered to the coating in the marking area at any position in the preset direction, which is beneficial for removing the coating from the marking area along the preset direction.

[0012] In some embodiments of the first aspect of this application, the clamping mechanism includes a rolling element, and the movement of the clamping mechanism relative to the target element along a preset direction includes:

[0013] The rolling element rolls relative to the target component, causing the clamping mechanism to move relative to the target component in the preset direction.

[0014] In the above technical solution, the pressing mechanism moves along a preset direction by rolling the rolling element relative to the target element, which makes the pressing mechanism easy to move and the pressing force on the adhesive part is balanced along the preset direction, so that the adhesive part can adhere to the coating of the marking area.

[0015] In some embodiments of the first aspect of this application, the clamping mechanism includes a plurality of rolling elements, the plurality of rolling elements being arranged at intervals along the conveying direction of the target element, the conveying direction of the target element being perpendicular to the preset direction;

[0016] The movement of the clamping mechanism relative to the target component along a preset direction includes:

[0017] The pressing mechanism moves relative to the target part along the preset direction by rolling the multiple rolling elements relative to the target part.

[0018] In the above technical solution, each rolling element can press an adhesive part to the coating, and multiple rolling elements can simultaneously press multiple adhesive parts arranged at intervals to the coating in multiple marking areas, thereby enabling the simultaneous production of multiple marking lines and improving marking efficiency.

[0019] In some embodiments of the first aspect of this application, removing the adhesive from the marking area includes:

[0020] The adhesive component is wound up by the material handling mechanism to remove the adhesive component from the marking area.

[0021] In the above technical solution, the adhesive component is wound up by a material-receiving mechanism to remove it from the marking area, enabling simultaneous adhesion and winding, thus improving marking efficiency. The material-receiving mechanism also facilitates the removal of the coating from the substrate.

[0022] In some embodiments of the first aspect of this application, the marking method is used for marking electrodes.

[0023] In the above technical solution, the electrode is marked by adhesion, and the target part does not have the heat-affected zone generated when laser marking is used, which does not affect the quality of the electrode, thereby improving the quality of electrode marking. Moreover, the marking efficiency is high and the marking cost is low.

[0024] Secondly, embodiments of this application provide a marking device for marking a target part, the target part including a substrate and a coating applied to the surface of the substrate, the marking device including an adhesive, a clamping mechanism and a material-taking mechanism; the clamping mechanism is configured to adhere the adhesive to the marking area of ​​the target part; the material-taking mechanism is configured to remove the adhesive from the marking area, so that the adhesive is detached from the coating of the marking area, thereby forming a mark line on the target part in the marking area.

[0025] In the above technical solution, the coating in the marking area is detached by the cooperation of the adhesive part, the clamping mechanism and the material taking mechanism, thereby forming a mark line in the marking area. During the marking process, the target part does not have the heat-affected zone generated when using laser marking, which will not affect the coating quality, and the marking efficiency is high.

[0026] In some embodiments of the second aspect of this application, the clamping mechanism is configured to adhere the adhesive to the marking area of ​​the target part when it moves relative to the target part in a preset direction.

[0027] In the above technical solution, by moving the clamping mechanism relative to the target part in a preset direction, the adhesive part can be firmly adhered to the coating, so that the coating can be smoothly detached from the substrate. The movement of the clamping mechanism in the preset direction ensures that the adhesive part is firmly adhered to the coating in the marking area at any position in the preset direction, which is beneficial for removing the coating from the marking area along the preset direction.

[0028] In some embodiments of the second aspect of this application, the clamping mechanism includes a rolling element, a portion of the adhesive element is disposed around the rolling element, and the rolling element is configured to roll relative to the target element to move the clamping mechanism along the preset direction.

[0029] In the above technical solution, the adhesive part is partially wound around the rolling element. The rolling element rolls relative to the target part, enabling the clamping mechanism to move in a preset direction and adhere the adhesive part wound around the rolling element to the coating in the preset area, which is convenient. Furthermore, the rolling element applies a uniform clamping force to the adhesive part, thereby enabling the adhesive part to adhere firmly to the coating in the marking area.

[0030] In some embodiments of the second aspect of this application, the marking device includes a plurality of the adhesive elements, the clamping mechanism includes a plurality of the rolling elements, the plurality of rolling elements are arranged at intervals along the conveying direction of the target part, and a portion of each adhesive element is wound around one of the rolling elements.

[0031] In the above technical solution, each rolling element can press an adhesive part to the coating, and multiple rolling elements can simultaneously press multiple adhesive parts arranged at intervals to the coating in multiple marking areas, thereby completing the manufacturing of multiple marking lines at the same time and improving marking efficiency.

[0032] In some embodiments of the second aspect of this application, the outer peripheral surface of the rolling element is provided with a limiting groove extending circumferentially along the rolling element, and the portion of the adhesive member surrounding the rolling element is embedded in the limiting groove.

[0033] In the above technical solution, the portion of the adhesive component surrounding the rolling component is embedded in the limiting groove, which can limit the adhesive component in the axial direction of the rolling component, prevent the adhesive component from sliding relative to the rolling component along the axial direction of the rolling component, and improve the bonding stability between the adhesive component and the coating.

[0034] In some embodiments of the second aspect of this application, the thickness of the adhesive element is greater than the depth of the limiting groove.

[0035] In the above technical solution, the thickness of the adhesive part is greater than the depth of the limiting groove. When the adhesive part is embedded in the limiting groove, the adhesive part protrudes from the limiting groove, which facilitates the adhesion of the adhesive part to the coating.

[0036] In some embodiments of the second aspect of this application, the marking device further includes: a drive mechanism connected to the clamping mechanism, the drive mechanism being configured to drive the clamping mechanism and the adhesive to reciprocate in the conveying direction of the target piece.

[0037] In the above technical solution, the driving mechanism drives the pressing mechanism and the adhesive part to move back and forth in the conveying direction of the target part, which can adjust the relative position of the adhesive part and the target part, making it convenient to make marks at different positions of the target part.

[0038] Thirdly, embodiments of this application provide an electrode manufacturing system, including a conveying device and a marking device provided in the second aspect embodiment; the conveying device is used to convey the electrode; the marking device is used to mark the electrode.

[0039] In the above technical solution, the electrode is marked by the cooperation of the adhesive part, the clamping mechanism and the material picking mechanism. During the marking process, the target part does not have the heat-affected zone generated when laser marking is used, which will not affect the coating quality, and the marking efficiency of the electrode is high. Attached Figure Description

[0040] 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.

[0041] Figure 1 A flowchart illustrating a method for creating a marking pattern provided in some embodiments of this application;

[0042] Figure 2 This application provides schematic diagrams of the structure of the target part after marking, as shown in some embodiments.

[0043] Figure 3 Schematic diagrams of the structure of the target part after marking are provided for other embodiments of this application;

[0044] Figure 4 This is a schematic diagram of the structure of the marking device provided in some embodiments of this application;

[0045] Figure 5 Schematic diagrams of the marking apparatus provided in other embodiments of this application;

[0046] Figure 6 Schematic diagrams of the marking apparatus provided in some embodiments of this application;

[0047] Figure 7 This is a schematic diagram of the structure of the marking device provided in some embodiments of this application;

[0048] Figure 8 Schematic diagrams of the apparatus provided in some further embodiments of this application;

[0049] Figure 9 for Figure 5 Enlarged view of point A in the middle;

[0050] Figure 10 This is a schematic diagram of the structure of an electrode manufacturing system provided in some embodiments of this application;

[0051] Figure 11 Schematic diagrams of the structure of an electrode manufacturing system provided in some embodiments of this application;

[0052] Figure 12 Schematic diagram of the structure of an electrode manufacturing system provided in some embodiments of this application;

[0053] Figure 13 Schematic diagrams of the structure of an electrode manufacturing system provided in other embodiments of this application;

[0054] Figure 14 for Figure 13 Enlarged view of point B in the middle.

[0055] Icons: 1-Target part; 1a-Substrate; 1b-Coating; 1c-Marking area; 1d-Marking line; 1e-Identifying hole; 1000-Electrode manufacturing system; 100-Marking device; 10-Adhesive part; 20-Clamping mechanism; 21-Pressure plate; 22-Rolling part; 221-Limiting groove; 23-Mounting shaft; 200-Identifying device; 300-Dust collection device; X-Thickness direction of substrate; Y-Preset direction; Z-Conveying direction of target part. Detailed Implementation

[0056] 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 and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0057] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0058] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0059] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0060] In the description of the embodiments of this application, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing this application and simplifying the description, and is 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, it should not be construed as a limitation on this application. Furthermore, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0061] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used 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 power battery applications, market demand is also constantly increasing.

[0062] A battery cell includes an electrode assembly and an electrolyte. The electrode assembly consists of a positive electrode, a negative electrode, and a separator. The battery cell primarily functions by the movement of metal ions between the positive and negative electrodes. The positive electrode includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector, and the uncoated positive current collector protrudes beyond the coated one, serving as the positive electrode tab. Taking a lithium-ion battery as an example, the positive current collector can be made of aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode includes a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative current collector, and the uncoated negative current collector protrudes beyond the coated one, serving as the negative electrode tab. The negative electrode current collector can be made of copper, and the negative electrode active material can be carbon or silicon, etc. To ensure that a large current can pass through without melting, there are multiple positive electrode tabs stacked together, and there are multiple negative electrode tabs stacked together. The separator can be made of PP (polypropylene) or PE (polyethylene), etc. In addition, the electrode assembly can be a wound structure or a stacked structure, and the embodiments of this application are not limited to these.

[0063] For wound electrode assemblies, the electrode assembly includes a straight portion and a bent portion connecting the two ends of the straight portion. The bent portions of the electrode assembly are prone to lithium plating and electrode breakage due to bending. Generally, by creating trace lines (i.e., marking the electrode) at the bent portion, the active material layer thickness of the positive electrode at the bent portion is reduced, or almost non-existent, thus lowering the risk of lithium plating and electrode breakage due to bending. Similarly, the active material layer thickness of the negative electrode at the bent portion is reduced, or almost non-existent, to lower the risk of electrode breakage due to bending.

[0064] For stacked electrode assemblies where at least one of the negative and positive electrodes is continuous, the continuous electrode will also be bent, thus forming a bend. To avoid the accumulation of active material layer in the bend and the risk of the electrode breaking due to bending, a trace line (i.e., marking the electrode) is generally set on the part of the continuous electrode located at the bend. This makes the active material layer thickness of the electrode at the bend smaller or the positive electrode almost without an active material layer at the bend, thereby reducing the risk of the electrode breaking due to bending at the bend.

[0065] The inventors discovered that current laser marking techniques for electrodes utilize the high temperature generated by the highly focused laser beam to ablate the active material layer of the electrode, forming a marking edge (i.e., a marking line) that exposes the substrate but does not damage or expose it. However, during the laser ablation of the active material layer, a heat-affected zone exists on the target part. This means that the heat generated by laser ablation affects the active material layer around the marking line, potentially impacting the properties of the active material and thus affecting the marking quality of the electrode. Furthermore, laser marking is inefficient; the width of the marking line is related to the laser power. To create marking lines of different widths, lasers with different powers must be used, resulting in high marking costs.

[0066] Based on the above considerations, in order to improve the quality, efficiency, and cost of marking on electrodes, the inventors, through in-depth research, have provided a marking method. This method involves adhering the coating of the marking area to the target part, thereby creating a mark line on the target part in the marking area. This results in either no coating in the marking area or a coating thickness in the marking area that is less than the coating thickness in other areas, thus forming a mark line in the marking area. By adhering the coating of the marking area to the substrate, a mark line is formed. The target part does not have a heat-affected zone generated during laser marking, which does not affect the coating quality. This method improves the marking quality, and also has high marking efficiency and low marking cost.

[0067] The texturing method disclosed in this application can be used for texturing electrodes, but is not limited to texturing other coated target parts. This is beneficial for improving texturing quality, increasing texturing efficiency, and reducing texturing costs.

[0068] like Figure 1 As shown, this application provides a marking method for marking a target part 1. The target part 1 includes a substrate 1a and a coating 1b applied to the surface of the substrate 1a. The marking method includes:

[0069] S100, the coating 1b is adhered to the marking area 1c of the target part 1 so that the target part 1 forms a mark line 1d in the marking area 1c.

[0070] The marking region 1c refers to a portion of the target part 1. The number of marking regions 1c can be one or more. "Two" refers to two or more. Each marking region 1c can correspond to a marking line 1d. In embodiments where there are multiple marking regions 1c, the multiple marking regions 1c are arranged at intervals along a certain direction.

[0071] If the target component 1 is an electrode, then the substrate 1a is a current collector, and the coating 1b is an active material layer. Along the thickness direction X of the substrate, the coating 1b can be applied to both sides of the substrate 1a, or only one side can be coated with the coating 1b. In the embodiment where the substrate 1a is coated with the coating 1b on both sides along the thickness direction X, the target component 1 can have a marking region 1c on both sides of the substrate thickness direction X. Therefore, a trace line 1d can be formed on both sides of the target component 1 along the substrate thickness direction X. The trace lines 1d on both sides can be correspondingly arranged; in other words, along the substrate thickness direction X, the projections of the trace lines 1d on both sides onto the substrate 1a overlap; or the trace lines 1d on both sides can be staggered; in other words, along the substrate thickness direction X, the projections of the trace lines 1d on both sides onto the substrate 1a partially overlap or are completely staggered.

[0072] like Figure 2 As shown, along the thickness direction X of the substrate, the entire coating 1b of the marking area 1c can be adhered to the substrate 1a so that the substrate 1a of the marking area is exposed, and the depth of the formed mark line 1d is consistent with the thickness of the coating 1b of other areas of the target part 1.

[0073] like Figure 3 As shown, along the thickness direction X of the substrate, a portion of the coating 1b in the marking area 1c can be adhered to the substrate 1a. In this case, the substrate 1a in the marking area is not exposed, and the depth of the resulting mark line 1d is less than the thickness of the coating 1b in other areas of the target part 1.

[0074] In step S100, a trace line 1d of a specified depth can be formed by bonding once, or by bonding multiple times to the same marking area 1c to form a trace line 1d of a specified depth.

[0075] By adhering the coating 1b of the marking region 1c, the marking region 1c is either free of coating 1b or has a coating 1b thickness that is less than that of coating 1b in other regions, thus forming a trace line 1d in the marking region 1c. The coating 1b of the marking region 1c is then adhered to the substrate 1a to form the trace line 1d. Since the target part 1 does not have a heat-affected zone generated during laser marking, the quality of the coating 1b is not affected, thus improving the marking quality. Furthermore, the marking efficiency is high; compared to laser marking, using an adhesive method reduces marking costs.

[0076] Please continue reading Figure 1 In some embodiments, the coating 1b that adheres to the marking area 1c of the target part 1 includes:

[0077] S110, by moving the clamping mechanism 20 relative to the target part 1 in the preset direction Y, the adhesive part 10 is pasted onto the marking area 1c of the target part 1;

[0078] S120, remove the adhesive 10 from the marking area 1c to separate the coating 1b of the marking area 1c from the substrate 1a.

[0079] In the embodiment where the target component 1 is an electrode sheet, the preset direction Y is the width direction of the substrate 1a, which is also the width direction of the electrode sheet.

[0080] Before step S110, the adhesive component 10 can be first laid on the coating 1b of the marking area 1c. The adhesive component 10 extends along a preset direction Y, and there is a preliminary adhesive relationship between the adhesive component 10 and the coating 1b of the marking area 1c. Then, the clamping mechanism 20 is pressed onto the side of the adhesive component 10 laid on the coating 1b of the marking area 1c that is away from the coating 1b, and moves along the preset direction Y, thereby firmly adhering the adhesive component 10 to the coating 1b of the marking area 1c.

[0081] Of course, the adhesive component 10 can also be laid and pressed simultaneously along the preset direction Y while the pressing mechanism 20 moves along the preset direction Y.

[0082] The clamping mechanism 20 clamps the adhesive part 10 on the side opposite to the coating 1b, providing clamping force to press the adhesive part 10 firmly against the coating 1b in the marking area 1c, so that the adhesive part 10 can be firmly adhered to the surface of the coating 1b in the marking area 1c. The adhesive force between the adhesive part 10 and the coating 1b should be greater than the adhesive force between the coating 1b and the substrate 1a, as well as the adhesive force between coatings 1b, so that when the adhesive part 10 is removed from the marking area 1c, the adhesive part 10 can be detached from the coating 1b.

[0083] In this embodiment, the pressing mechanism 20 presses the adhesive 10 against the coating 1b of the marking area 1c during its movement along the preset direction Y. This allows the pressing mechanism 20 to have a smaller size along the preset direction Y, which is beneficial for miniaturizing the structure of the pressing mechanism 20.

[0084] The clamping mechanism 20 can move back and forth along a preset direction Y to repeatedly adhere the adhesive part 10 and the coating 1b.

[0085] In other embodiments, such as Figure 4As shown, the press mechanism includes a pressure plate 21. The dimensions of the pressure plate 21 along the preset direction Y and the dimensions of the adhesive 10 can match the dimensions of the coating 1b of the marking area 1c along the preset direction Y. When the pressure plate 21 is pressed down, it can completely cover the adhesive 10 that is pasted on the coating 1b of the marking area 1c. Thus, the pressing mechanism 20 can completely bond the adhesive 10 to the coating 1b of the marking area 1c along the preset direction Y without moving.

[0086] By moving the clamping mechanism 20 relative to the target part 1 along the preset direction Y, the adhesive part 10 can be firmly adhered to the coating 1b, which is beneficial for the coating 1b to detach from the substrate 1a. The movement of the clamping mechanism 20 along the preset direction Y ensures that the adhesive part 10 is firmly adhered to the coating 1b in the marking area 1c at any position along the preset direction Y, which is beneficial for removing the coating 1b from the marking area 1c along the preset direction Y during the process of removing the coating 1b adhered to the marking area 1c.

[0087] The clamping mechanism 20 can also have other structural forms, and the methods for driving the clamping mechanism 20 to move along the preset direction Y are also different depending on the structural form of the clamping mechanism 20. See also Figure 1 , Figure 5 In some embodiments, the clamping mechanism 20 includes a rolling element 22, which moves relative to the target element 1 along a preset direction Y, including:

[0088] The rolling element 22 rolls relative to the target element 1, causing the pressing mechanism 20 to move relative to the target element 1 in a preset direction Y.

[0089] In this embodiment, the adhesive member 10 is a strip structure, with a portion of it wrapped around the rolling member 22 and located between the target member 1 and the rolling member 22. The rolling member 22 rolls relative to the target member 1, enabling it to move along a preset direction Y, thereby causing the pressing mechanism 20 to move along the preset direction Y. During the rolling process, the portion of the adhesive member 10 wrapped around the rolling member 22 is bonded to the coating 1b. The rolling member 22 can reciprocate along the preset direction Y.

[0090] In this embodiment, a feeding mechanism (not shown in the figure) and a picking mechanism (not shown in the figure) are arranged at intervals along the width direction of the substrate 1a. One end of the adhesive member 10 is wrapped around the feeding mechanism, and the other end of the adhesive member 10 is wrapped around the picking mechanism. The portion of the adhesive member 10 located between the feeding mechanism and the picking mechanism is wrapped around the rolling member 22. When the rolling member 22 rolls forward in a preset direction Y, the feeding mechanism releases the adhesive member 10, and the rolling member 22 adheres the released adhesive member 10 to the coating 1b. The picking mechanism rewinds the adhesive member 10 to remove the adhesive member 10 that has been adhered to the coating 1b by the rolling member 22, thereby achieving separation from the coating 1b and forming a trace line 1d in the marking area 1c.

[0091] The pressing mechanism 20 moves along the preset direction Y by the rolling element 22 relative to the target element 1, making the pressing mechanism 20 easy to move and the pressing force on the adhesive element 10 along the preset direction Y is balanced, so that the adhesive element 10 can be firmly adhered to the coating 1b of the marking area 1c.

[0092] Please continue to refer to Figure 1 , Figure 5 In some embodiments, the clamping mechanism 20 includes a plurality of rolling elements 22, which are arranged at intervals along the conveying direction Z of the target part, and the conveying direction Z of the target part is perpendicular to the preset direction Y.

[0093] The clamping mechanism 20 moves relative to the target part 1 along a preset direction Y, including:

[0094] Multiple rolling elements 22 roll relative to the target element 1, causing the pressing mechanism 20 to move relative to the target element 1 in a preset direction Y.

[0095] The target component 1 can be transported entirely along a straight line, or it can be transported partially along a straight line and partially in a non-linear manner. In the embodiments of this application, the transport direction Z of the target component refers to the transport direction of the portion of the target component 1 that is transported along a straight line.

[0096] If target component 1 is an electrode sheet, then the conveying direction Z of the target component is the length direction of substrate 1a (the extension direction of substrate 1a). The width direction, thickness direction X, and length direction of substrate 1a are perpendicular to each other.

[0097] Multiple rolling elements 22 are arranged at intervals along the Z-direction of conveying the target part, and multiple adhesive elements 10 are provided accordingly. Each adhesive element 10 is wound around a rolling element 22. The spacing between two adjacent adhesive elements 10 wound around two adjacent rolling elements 22 is the same as the spacing between two adjacent marking areas 1c.

[0098] In other embodiments, the clamping mechanism 20 may also include only one rolling element 22.

[0099] In some embodiments, the adhesive component 10 and the clamping mechanism 20 move synchronously along the conveying direction Z of the target component, so that the adhesive component 10 and the clamping mechanism 20 are stationary relative to the target component 1. For example, the adhesive component 10 and the clamping mechanism 20 are driven to move along the conveying direction by a driving mechanism, and the driving mechanism and the power mechanism operate synchronously, so that the adhesive component 10 and the clamping mechanism 20 can move synchronously along the conveying direction and a preset direction Y, thereby forming a trace line 1d extending along the preset direction Y to improve the marking efficiency. In other embodiments, the clamping mechanism 20 can also clamp the adhesive component 10 and the coating 1b along the preset direction Y when the target component 1 is stationary, thereby completing the marking.

[0100] Each rolling element 22 can press an adhesive element 10 against the coating 1b. Multiple rolling elements can simultaneously press multiple adhesive elements 10 arranged at intervals against the coating 1b in multiple marking areas 1c, thereby enabling the simultaneous production of multiple marking lines 1d and improving marking efficiency.

[0101] It should be noted that the hollow arrow in the figure of this application indicates the conveying direction of the adhesive part 10, the arrow marked on the rolling part 22 indicates the rotation direction of the rolling part 22, the conveying direction Z of the target part indicates unidirectional, and the thickness direction X of the substrate and the preset direction Y both indicate bidirectional.

[0102] Please continue to refer to Figure 1 In some embodiments, removing the marking area 1c adhesive part 10 includes:

[0103] The adhesive part 10 is wound up by a material taking mechanism (not shown in the figure) to remove the adhesive part 10 from the marking area 1c.

[0104] In this embodiment, the material taking mechanism and the clamping mechanism 20 are independent structures. The material taking mechanism is used to roll up the adhesive 10 bonded to the coating 1b after the clamping mechanism 20 bonds the adhesive 10 to the coating 1b. During the process of the material taking mechanism rolling up the adhesive 10, the adhesive 10 will separate the coating 1b to form a trace line 1d in the marking area 1c.

[0105] In other embodiments, the rolling element 22 can serve as a material handling mechanism, such as... Figure 6 As shown, one end of the adhesive member 10 is fixed to the rolling member 22. During the rolling member 22's forward rolling along the preset direction Y, the rolling member 22 can roll up the adhesive member 10 that is bonded to the coating 1b and remove the coating 1b. The adhesive member 10, which has the coating 1b detached from the substrate 1a, is wrapped around the rolling member 22.

[0106] In other embodiments, the rolling element 22 can also serve as a laying structure for laying the adhesive element 10 in the marking region 1c, such as... Figure 7 As shown, before the adhesive 10 is bonded to the coating 1b of the marking area 1c, the adhesive 10 is wrapped around the rolling element 22. The outermost end of the adhesive 10 is the free end. As the rolling element 22 rolls forward in the preset direction Y, the rolling element 22 releases the adhesive 10 wrapped around the rolling element 22 from the free end of the adhesive 10 and bonds the released part to the coating 1b of the marking area 1c.

[0107] The adhesive component 10 is wound up by the material handling mechanism to remove it from the marking area 1c. This allows for simultaneous adhesion and winding, improving marking efficiency. The material handling mechanism also facilitates the removal of the coating 1b from the substrate 1a.

[0108] In some embodiments, the marking method is used to mark electrodes.

[0109] In other embodiments, the marking method can also be used to mark other target parts 1 with coating 1b.

[0110] By using an adhesive method to create markings on the electrode, the target part does not have the heat-affected zone generated during laser marking, thus not affecting the electrode quality and improving the marking quality. Furthermore, this method offers higher marking efficiency and lower marking costs.

[0111] like Figures 4-8 As shown, this application embodiment also provides a marking device 100 for marking a target part 1. The target part 1 includes a substrate 1a and a coating 1b applied to the surface of the substrate 1a. The marking device 100 includes an adhesive 10, a clamping mechanism 20, and a material taking mechanism. The clamping mechanism 20 is configured to adhere the adhesive 10 to the marking area 1c of the target part 1. The material taking mechanism is configured to remove the adhesive 10 from the marking area 1c, so that the adhesive 10 adheres to the coating 1b of the marking area 1c, thereby forming a mark line 1d on the target part 1 in the marking area 1c.

[0112] The adhesive component 10 can be tape.

[0113] The clamping mechanism 20 applies pressure to the adhesive 10 on the side of the adhesive 10 facing away from the coating 1b, so that the adhesive 10 adheres to the coating 1b in the marking region 1c. After the clamping mechanism 20 clamps the adhesive 10 to the coating 1b in the marking region 1c, the adhesion strength between the adhesive 10 and the coating 1b is greater than the adhesion strength between the coating 1b and the substrate 1a, as well as the adhesion strength between the coatings 1b and each other. This allows the adhesive 10 to detach the coating 1b from the marking region 1c when the material removal mechanism removes the adhesive 10 from the marking region 1c, thereby forming a mark line 1d in the marking region 1c.

[0114] The adhesive piece 10 can be applied once or multiple times to form trace lines 1d of different depths in the marking area 1c.

[0115] The structure of the material taking mechanism can take many forms. For example, in some embodiments, the material taking mechanism is a winding mechanism. One end of the adhesive 10 is wound around the winding mechanism. When the adhesive 10 is adhered to the coating 1b of the marking area 1c, the adhesive 10 is wound up and adhered to the coating 1b so that the adhesive 10 is removed from the marking area 1c. During the removal process, the adhesive 10 can adhere to the coating 1b of the marking area 1c so that the thickness of the coating 1b in the marking area 1c is less than the thickness of the coating 1b in other areas of the target part 1.

[0116] For example, the adhesive 10 is a strip-shaped structure extending along the width direction of the substrate 1a. The adhesive 10 is laid on the marking area 1c and adhered to the coating 1b of the marking area 1c. The material handling mechanism may include a clamping part that clamps one end of the adhesive 10 along the width direction of the substrate 1a and moves it in a preset direction Y, thereby tearing the adhesive 10 off from the marking area 1c.

[0117] At least a portion of the adhesive element 10 is disposed between the clamping mechanism 20 and the coating 1b of the marking region 1c. The clamping mechanism 20 applies a clamping force to the adhesive element 10 so that the adhesive element 10 adheres to the coating 1b of the marking region 1c. Then, the adhesive element 10 is removed from the coating 1b of the marking region 1c by the material removal mechanism. During the removal of the adhesive element 10, the adhesive element 10 takes away part or all of the coating 1b of the marking region 1c so that the thickness of the coating 1b of the marking region 1c is less than the thickness of the coating 1b of other areas of the target part 1, thereby forming a trace line 1d in the marking region 1c.

[0118] By using the adhesive part 10, the clamping mechanism 20 and the material taking mechanism to adhere and separate the coating 1b from the marking area 1c, a mark line 1d is formed in the marking area 1c. During the marking process, the target part does not have a heat-affected zone generated when using laser marking, which will not affect the quality of the coating 1b, and the marking efficiency is high.

[0119] In some embodiments, the clamping mechanism 20 is configured to adhere the adhesive 10 to the marking area 1c of the target part 1 when it moves relative to the target part 1 in a preset direction Y.

[0120] If the target component 1 is an electrode sheet, the preset direction Y is the width direction of the substrate 1a, which is also the width direction of the electrode sheet.

[0121] The marking device 100 also includes a power mechanism for driving the clamping mechanism 20 to move along a preset direction Y. During movement, the clamping mechanism 20 can adhere the adhesive piece 10 to the coating 1b of the marking area 1c. The power mechanism can be a linear drive mechanism, such as a linear motor, cylinder, or hydraulic cylinder. It can also be a rotary motor. Different types of power mechanisms can be selected depending on the structure of the clamping mechanism 20.

[0122] It should be noted that, depending on the structure of the clamping mechanism 20, the pressure applied by the clamping mechanism 20 to the adhesive component 10 varies. In some cases, such as... Figure 8As shown, the clamping mechanism 20 includes a pressure plate 21, which contacts the adhesive component 10 to apply pressure to it. The size of the pressure plate 21 along a preset direction Y is smaller than the size of the coating 1b of the marking region 1c along the preset direction Y. Before the pressure plate 21 acts on the adhesive component 10, the adhesive component 10 can be pre-laid on the coating 1b of the marking region 1c. The adhesive component 10 extends along the preset direction Y, and there is a preliminary adhesive relationship between the adhesive component 10 and the coating 1b of the marking region 1c. The clamping mechanism 20 then presses the clamping plate 21 onto the side of the adhesive piece 10 facing away from the coating 1b, which is laid on the coating 1b in the marking area 1c. Since the size of the clamping plate 21 along the preset direction Y is small, the clamping plate 21 can only act on a portion of the area along the preset direction Y. Therefore, the clamping plate 21 can move along the preset direction Y and act on different positions of the adhesive piece 10, so that the adhesive piece 10 can be bonded to the coating 1b in the marking area 1c at any position along the preset direction Y, thereby bonding the adhesive piece 10 to the coating 1b in the marking area 1c. It can be understood that in the embodiment where the adhesive piece 10 is first laid on the coating 1b in the marking area 1c and has a preliminary bonding relationship with the coating 1b, the clamping mechanism 20 plays the role of pressing the adhesive piece 10 onto the coating 1b in the marking area 1c, so that the adhesive piece 10 and the coating 1b are bonded more tightly and with better bonding strength.

[0123] In some embodiments, the pressing mechanism 20 can also serve to adhere the adhesive 10 to the coating 1b of the marking area 1c and press the adhesive 10 to the coating 1b. During the process of moving relative to the target 1 in a preset direction Y, the pressing mechanism 20 adheres the adhesive 10 to the coating 1b of the marking area 1c.

[0124] In other embodiments, such as Figure 4 As shown, the clamping mechanism 20 includes a pressure plate 21 along a preset direction Y. The size of the pressure plate 21 is greater than or equal to the size of the coating 1b in the marking area 1c along the preset direction Y. The pressure plate 21 is used to contact the adhesive part 10 to apply pressure to the adhesive part 10. Since the size of the pressure plate 21 along the preset direction Y is greater than or equal to the size of the adhesive part 10 along the preset direction Y, the pressure plate 21 can cover the entire adhesive part 10 along the preset direction Y. Therefore, the clamping mechanism 20 can apply clamping force to any position of the adhesive part 10 along the preset direction Y without needing to move relative to the target part 1 along the preset direction Y.

[0125] By moving the clamping mechanism 20 relative to the target part 1 along the preset direction Y, the adhesive part 10 can be firmly adhered to the coating 1b, allowing the coating 1b to detach smoothly from the substrate 1a. The movement of the clamping mechanism 20 along the preset direction Y ensures that the adhesive part 10 is firmly adhered to the coating 1b in the marking area 1c at any position along the preset direction Y, which is beneficial for removing the coating 1b from the marking area 1c along the preset direction Y during the removal process.

[0126] There are many ways to move the clamping mechanism 20 relative to the target part 1 along a preset direction Y. For example, the clamping mechanism 20 can be driven to move along the preset direction Y by a linear power mechanism. Furthermore, different power mechanisms can be selected depending on the structural form of the clamping mechanism 20. For example, Figure 8 The clamping mechanism 20 shown can be driven to move along a preset direction Y by a linear drive mechanism. For example, in some embodiments, the clamping mechanism 20 includes a rolling element 22. Figure 5 As shown in the figure, a portion of the adhesive member 10 is wound around the rolling member 22, which is configured to roll relative to the target member 1 so that the pressing mechanism 20 moves in a preset direction Y.

[0127] In this embodiment, the adhesive member 10 is a strip structure, with a portion of it wrapped around the rolling member 22 and located between the target member 1 and the rolling member 22. The rolling member 22 rolls relative to the target member 1, enabling it to move along a preset direction Y, thereby causing the pressing mechanism 20 to move along the preset direction Y. During the rolling process, the portion of the adhesive member 10 wrapped around the rolling member 22 adheres to the coating 1b. The rolling member 22 can reciprocate along the preset direction Y. In this embodiment, the power mechanism can be a rotary motor, which drives the rolling member 22 to rotate.

[0128] In this embodiment, the marking device 100 further includes a feeding mechanism (not shown in the figure) and a picking mechanism (not shown in the figure). The feeding mechanism and the picking mechanism are arranged at intervals along the width direction of the substrate 1a. One end of the adhesive member 10 is wrapped around the feeding mechanism, and the other end of the adhesive member 10 is wrapped around the picking mechanism. The portion of the adhesive member 10 located between the feeding mechanism and the picking mechanism is wrapped around the rolling member 22. When the rolling member 22 rolls forward in a preset direction Y, the feeding mechanism releases the adhesive member 10, and the rolling member 22 adheres the released adhesive member 10 to the coating 1b. The picking mechanism rewinds the adhesive member 10 to remove the adhesive member 10 that has been adhered to the coating 1b by the rolling member 22, thereby achieving separation from the coating 1b and forming a mark line 1d in the marking area 1c.

[0129] The adhesive part 10 is partially wound around the rolling member 22. The rolling member 22 rolls relative to the target part 1, thereby enabling the pressing mechanism 20 to move in a preset direction Y and to adhere the adhesive part 10 wound around the rolling member 22 to the coating 1b in the preset area, which is convenient. Moreover, the rolling member 22 applies a uniform pressing force to the adhesive part 10, thereby enabling the adhesive part 10 to adhere to the coating 1b in the marking area 1c.

[0130] In some embodiments, the marking device 100 includes a plurality of adhesive members 10, and the clamping mechanism 20 includes a plurality of rolling members 22. Figure 5As shown in the figure, multiple rolling elements 22 are arranged at intervals along the conveying direction Z of the target part, and a portion of each adhesive element 10 is wound around one rolling element 22.

[0131] Multiple rolling elements 22 can rotate independently, and each rolling element 22 is equipped with a corresponding power mechanism, which drives the corresponding rolling element 22 to roll relative to the target element 1.

[0132] Multiple rolling elements 22 can also rotate synchronously, driven by the same power mechanism. For example... Figure 5 As shown, the clamping mechanism 20 includes a mounting shaft 23, and a plurality of rolling elements 22 are fixedly mounted on the mounting shaft 23 at intervals along the axial direction of the mounting shaft 23. The axial direction of the mounting shaft 23 is consistent with the conveying direction Z of the target part. The power mechanism drives the mounting shaft 23 to rotate, thereby driving the rolling elements 22 to rotate, so that the rolling elements 22 can roll relative to the target part 1 in a preset direction Y.

[0133] Each rolling element 22 can press an adhesive element 10 against the coating 1b. Multiple rolling elements can simultaneously press multiple adhesive elements 10 arranged at intervals against the coating 1b in multiple marking areas 1c, thereby simultaneously completing the manufacturing of multiple marking lines 1d and improving marking efficiency.

[0134] According to the actual production process requirements, the trace line 1d needs to extend in a straight line. Since part of the adhesive 10 is wrapped around the rolling element 22, there is a risk that the adhesive 10 may move along the axial direction of the rolling element 22, which may cause the final trace line 1d to not extend in a straight line. It is possible that the adhesive 10 may detach from the rolling element 22 along the axial direction of the rolling element 22.

[0135] Based on the above considerations, in some embodiments, such as Figure 9 As shown, the outer peripheral surface of the rolling element 22 is provided with a limiting groove 221 extending circumferentially along the rolling element 22, and the part of the adhesive element 10 surrounding the rolling element 22 is embedded in the limiting groove 221.

[0136] The limiting groove 221 extends circumferentially along the rolling element 22 to form an annular groove, allowing the rolling element 22 to rotate at any angle. A portion of the limiting groove 221 faces the coating 1b of the marking area 1c, enabling the portion of the adhesive element 10 located between the rolling element 22 and the coating 1b of the marking area 1c to be embedded within the limiting groove 221. Along the axial direction of the rolling element 22, the two opposing sidewalls of the limiting groove 221 together axially limit the adhesive element 10 embedded within the limiting groove 221, preventing the adhesive element 10 from sliding relative to the rolling element 22 along the axial direction of the rolling element 22, thereby improving the bonding stability between the adhesive element 10 and the coating 1b.

[0137] In some embodiments, the thickness of the adhesive 10 is greater than the depth of the limiting groove 221.

[0138] In other embodiments, the thickness of the adhesive 10 may be consistent with the depth of the limiting groove 221, so that the part of the adhesive 10 embedded in the limiting groove 221 facing the coating 1b is flush with the outer peripheral surface of the rolling element 22.

[0139] If the thickness of the adhesive component 10 is greater than the depth of the limiting groove 221, then when the adhesive component 10 is embedded in the limiting groove 221, the adhesive component 10 protrudes from the limiting groove 221, which facilitates the adhesion of the adhesive component 10 to the coating 1b.

[0140] In some embodiments, the marking device 100 further includes a drive mechanism (not shown) connected to the clamping mechanism 20, the drive mechanism being configured to drive the clamping mechanism 20 and the adhesive member 10 to move back and forth in the transport direction Z of the target member.

[0141] The drive mechanism can be an electric motor, a pneumatic cylinder, a hydraulic cylinder, etc.

[0142] The drive mechanism can drive the adhesive component 10 and the pressing mechanism 20 to move along the conveying direction Z of the target component, or it can drive the adhesive component 10 and the pressing mechanism 20 to move in the opposite direction to the conveying direction Z of the target component, so as to realize that the drive mechanism drives the pressing mechanism 20 and the adhesive component 10 to move back and forth in the conveying direction Z of the target component.

[0143] During the process of the drive mechanism driving the adhesive 10 and the clamping mechanism 20 to move along the conveying direction Z of the target part, the drive mechanism can make the adhesive 10 and the clamping mechanism 20 move at the same speed along the conveying direction Z of the target part, so that the adhesive 10 and the clamping mechanism 20 are stationary relative to the target part 1, and the power mechanism and the drive mechanism work synchronously, so that the adhesive 10 and the clamping mechanism 20 can move synchronously along the preset direction Y and the conveying direction Z of the target part, so that the marking area 1c of the target part 1 forms a mark line 1d extending along the preset direction Y.

[0144] In other embodiments, during the reciprocating motion of the adhesive 10 and the rolling element 22 along the conveying direction Z of the target part by the drive mechanism, the target part 1 may be in a stationary state. The drive mechanism can drive the adhesive 10 and the pressing mechanism 20 to different marking areas 1c to form a mark line 1d at different positions of the target part 1.

[0145] The driving mechanism drives the clamping mechanism 20 and the adhesive component 10 to move back and forth in the conveying direction Z of the target part, which can adjust the relative position of the adhesive component 10 and the target part 1, making it convenient to make marks at different positions of the target part 1.

[0146] like Figures 10-13 As shown, this application provides an electrode manufacturing system 1000, including a conveying device and a marking device 100 provided in any of the above embodiments; the conveying device is used to convey the electrode; the marking device 100 is used to mark the electrode.

[0147] The target component 1 is an electrode, the substrate 1a is a current collector, and the coating 1b is an active material layer. The marking device 100 can mark either the positive electrode or the negative electrode.

[0148] By using the adhesive part 10, the clamping mechanism 20 and the material taking mechanism to mark the electrode sheet, the target part does not have the heat-affected zone generated when using laser marking during the marking process, which will not affect the quality of the coating 1b, and the marking efficiency of the electrode sheet is high.

[0149] In some embodiments, the electrode manufacturing system 1000 further includes a marking device 200 for making markings on the electrode to indicate the location of the marking area 1c of the electrode.

[0150] The marking device 200 can take many forms, and different marking devices 200 will produce different markings on the electrode. For example, such as... Figure 14 As shown, the marking device 200 is a drilling device used to drill holes in the electrode sheet to form marking holes 1e on the electrode sheet. The marking holes 1e penetrate the electrode sheet along the thickness direction X of the substrate.

[0151] In this embodiment, the electrode manufacturing system 1000 includes two marking devices 200, which are arranged at a distance along a predetermined direction Y. Along the thickness direction X of the substrate, the two marking devices 200 are located on the same side of the electrode. The two marking devices 200 are respectively used to drill holes on both sides of the electrode along the predetermined direction Y. In other embodiments, along the thickness direction X of the substrate, the two marking devices 200 may be located on opposite sides of the electrode.

[0152] The marking device 200 can move back and forth along the conveying direction of the electrode, so that the marking device 200 can move to different positions of the electrode to mark the electrode.

[0153] Of course, in other embodiments, the marking device 200 may also take other forms, and the marking on the electrode may also take other forms.

[0154] The marking device 200 can mark the marking area 1c of the electrode sheet in advance, so that the adhesive 10 and the clamping mechanism 20 can be accurately positioned in the marking area 1c, thereby improving the positioning accuracy and marking quality.

[0155] In some embodiments, the electrode manufacturing system 1000 further includes a dust collection device 300 disposed below the electrode, which is used to collect waste material that falls off when the marking device 200 is punched.

[0156] In some embodiments, the electrode sheets are arranged horizontally, the thickness direction X of the substrate is consistent with the vertical direction, the dust collection device 300 is disposed below the electrode sheets, and the drilling device is disposed above the electrode sheets and opposite to the dust collection device 300. The waste generated after the drilling device drills holes in the electrode sheets falls directly into the dust collection device 300. There are two dust collection devices 300, each corresponding to one of the two marking devices 200. The dust collection devices 300 are used to collect the waste generated during the drilling process of the corresponding marking device 200.

[0157] The dust collection device 300 can move back and forth along the conveying direction of the electrode sheet, so that after the marking device 200 moves back and forth along the conveying direction of the electrode sheet, the dust collection device 300 can move to the position corresponding to the marking device 200.

[0158] The dust collection device 300 can maintain a clean electrode manufacturing environment, reduce the difficulty of handling mobile phone waste later, and improve waste collection efficiency.

[0159] This application provides a method for marking electrode traces. The method includes a sticky element 10 released from a feeding mechanism and wound around a rolling element 22. The rolling element 22 rolls relative to a target part 1 along a preset direction Y. During rolling, the sticky element 10 released from the feeding mechanism is adhered to the active material layer in the marking region 1c. A feeding mechanism then retracts the sticky element 10 adhered to the active material layer in the marking region 1c by the rolling element 22, thereby causing the sticky element 10 to detach from the marking region 1c and removing the active material layer from the marking region 1c. In this embodiment, by arranging multiple rolling elements 22 at intervals along the conveying direction Z of the target part, with a sticky element 10 wound around the outer periphery of each rolling element 22, and the rolling element 22 rolling relative to the target part 1 along the preset direction Y, the corresponding sticky element 10 is adhered to the active material layer in the marking region 1c during rolling, thus simultaneously forming multiple trace lines 1d, improving marking efficiency.

[0160] By adhesive bonding, the active material layer of the electrode in the marking region 1c is separated from the marking region 1c to form a marking line. Since the electrode does not have the heat-affected zone generated during laser marking, the quality of the active material layer is not affected, thus improving the marking quality. Furthermore, the marking efficiency is high and the marking cost is low.

[0161] The above are merely preferred embodiments of this application and are 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. A marking apparatus for marking a target part, the target part comprising a substrate and a coating applied to the surface of the substrate, the target part being an electrode, the substrate being a current collector, and the coating being an active material layer, characterized in that, The marking device includes: Multiple adhesive parts; A clamping mechanism configured to adhere an adhesive to the marking area of ​​the target part when the clamping mechanism moves relative to the target part in a preset direction; The clamping mechanism includes a plurality of rolling elements, a portion of the adhesive element is wound around the rolling elements, and the rolling elements are configured to roll relative to the target part so that the clamping mechanism moves along the preset direction; the plurality of rolling elements are arranged at intervals along the conveying direction of the target part, and a portion of each adhesive element is wound around one of the rolling elements; The outer peripheral surface of the rolling element is provided with a limiting groove extending along the circumferential direction of the rolling element, and the portion of the adhesive element surrounding the rolling element is embedded in the limiting groove. The material handling mechanism is configured to remove the adhesive element from the marking area so that the adhesive element adheres to the coating of the marking area, thereby forming a mark line on the target part in the marking area.

2. The marking device according to claim 1, characterized in that, The thickness of the adhesive component is greater than the depth of the limiting groove.

3. The marking device according to claim 1, characterized in that, The marking device further includes: A drive mechanism, connected to the clamping mechanism, is configured to drive the clamping mechanism and the adhesive component to reciprocate in the conveying direction of the target component.

4. An electrode manufacturing system, characterized in that, include: A conveying device used to transport electrode sheets; The marking apparatus according to any one of claims 1-3 is used to mark the electrode sheet.

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