Scratching device for electrode coating and electrode processing system

Abstract

The present application relates to a grooving device for electrode coating and an electrode processing system, which are applied in the field of electrode processing. It includes a mounting part, at least one grooving part and an adjusting part. The mounting part is used to connect a frame; the grooving part can be mounted to the mounting part, and when grooving, the grooving part is configured to be able to extend into the electrode along a first direction; the adjusting part is used to flexibly connect the grooving part to the mounting part, so as to adjust the installation position of the grooving part on the mounting part. The present application grooves the wet slurry coating before or during baking, and then forms grooves on the surface of the electrode after drying, and the depth and position of the grooves can be controlled by controlling the height of the grooving part from the coating surface and the installation position of the grooving part on the mounting part. Grooving can form grooves on the surface of the electrode for accommodating and storing electrolyte, thereby increasing the wetting speed and the amount of liquid retained.

Description

Technical Field

[0001] The present application relates to the technical field of pole piece processing, and in particular to a pole piece coating grooving device and a pole piece processing system. Background Art

[0002] In the production process of battery pole pieces, three steps are required in sequence: slurry preparation, slurry coating and roller pressing. Among them, the coating process is mainly divided into two stages. One is to evenly coat the slurry on the current collector, and the other is to dry the wet slurry on the current collector through a drying oven to form an active material coating. The roller pressing process refers to the use of a press to press the active material layer under high pressure and compress it to a specified density after the slurry coating is completed, so as to improve the adhesion between the active material and the current collector and reduce the porosity.

[0003] It is understandable that after the density of the active material coating increases after the roller pressing process, in the subsequent electrolyte solution infiltration process, it will be difficult for the electrolyte solution to quickly penetrate the entire electrode through the active material coating, resulting in a longer impregnation time.

[0004] Therefore, in the related art, a groove is constructed by setting a groove structure to move back and forth on the wet slurry surface to guide the electrolyte solution to penetrate the electrode, thereby shortening the immersion time. However, the existing groove structure has a fixed shape and is difficult to adapt to the groove requirements of electrodes of different specifications. Utility Model Content

[0005] Based on this, it is necessary to provide a grooving device for electrode coating and a electrode processing system to address the problem that the groove structure in the related technology is fixed in shape and difficult to adapt to the grooving requirements of electrodes of different specifications.

[0006] In the first aspect, the present application provides a grooving device for electrode coating, which adopts the following technical solution:

[0007] A grooving device for electrode coating comprises a mounting member, at least one grooving member and an adjusting member, wherein the mounting member is used to connect a frame; the grooving member can be mounted to the mounting member, and when grooving, the grooving member is configured to be able to extend into the electrode along a first direction; the adjusting member is used to movably mount the grooving member on the mounting member, so as to adjust the mounting position of the grooving member on the mounting member.

[0008] In one embodiment, the mounting member includes at least one mounting groove that passes through the mounting member along the first direction, all of the mounting grooves are arranged at intervals along the second direction, and the mounting groove is configured to extend along a third direction. Along the third direction, a plurality of the grooved members can be arranged at intervals in the mounting groove; wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0009] In one embodiment, the grooved member includes a grooved portion and a connecting portion connected to the grooved portion. Along the first direction, the connecting portion can be inserted into the mounting member through the mounting groove and can be movably mounted on the mounting member with the aid of the adjusting member.

[0010] In one embodiment, the adjusting member includes a first adjusting portion and a second adjusting portion movably connected to the connecting portion, and along the first direction, the first adjusting portion and the second adjusting portion are respectively abutted against two opposite sides of the mounting member.

[0011] In one embodiment, the connecting portion is threadedly connected to the first adjusting portion and the second adjusting portion.

[0012] In one embodiment, the groove portion is configured as a conical structure. Along the first direction, the groove portion includes a first end connected to the connecting portion and a second end arranged opposite to the first end. In the second direction, the size of the first end is larger than the size of the second end.

[0013] In one of the embodiments, in the third direction, the size of the mounting groove is set to be larger than the size of the pole piece.

[0014] In a second aspect, the present application provides a pole piece processing system, which adopts the following technical solution:

[0015] A pole piece processing system comprises a winding and unwinding device, a coating device, a drying device and at least two of the above-mentioned pole piece coating grooving devices, wherein the winding and unwinding device comprises a winding and unwinding device for winding and unwinding the pole piece respectively, so as to realize the transmission of the pole piece; the coating device is arranged between the winding and unwinding devices, and is used to coat the wet slurry on the surface of the current collector to form the pole piece; the drying device is arranged between the coating and the winding device, and is used to dry the slurry to form an active material layer; the grooving device is arranged between the coating and the drying device, or the grooving device is arranged in the drying device, and at least two of the grooving devices are respectively used to perform grooving processing on the opposite sides of the pole piece.

[0016] In one embodiment, the coating device includes a first coating device and a second coating device, the first coating device is used to coat the slurry on one side surface of the current collector to form an upper slurry layer, and the second coating device is used to coat the slurry on the other side surface of the current collector to form a lower slurry layer.

[0017] In one embodiment, the drying device includes a first oven and a second oven, the first oven is used to dry the upper slurry layer, and one of the grooving devices is arranged in the first oven, or between the first oven and the first coating device; the second oven is used to dry the lower slurry layer, and another of the grooving devices is arranged in the second oven, or between the second oven and the second coating device.

[0018] The above-mentioned electrode coating grooving device grooves the wet slurry coating before baking or during baking (before the dry-wet transition point), and then forms grooves on the electrode surface after drying, and the groove depth and groove position can be controlled by controlling the height of the groove piece from the coating surface and the installation position of the groove piece on the installation piece. Grooving can form grooves on the electrode surface for accommodating and storing electrolyte, thereby increasing the wetting speed and liquid retention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of a pole piece processing system in one embodiment of the present application.

[0020] Figure 2 It is a schematic diagram of a pole piece processing system in another embodiment of the present application.

[0021] Figure 3 Schematic diagram of a grooving device for electrode coating in one embodiment of the present application.

[0022] Figure 4 Schematic diagram of a groove member and an adjusting member in one embodiment of the present application.

[0023] Figure 5 It is a plan view of a pole piece in one embodiment of the present application.

[0024] Figure 6 for Figure 5 Schematic diagram of the cross section of the middle pole piece.

[0025] Figure 7 It is a plan view of a pole piece in another embodiment of the present application.

[0026] Figure 8 for Figure 7 Schematic diagram of the cross section of the middle pole piece.

[0027] Fig. 9 It is a plan view of a pole piece in another embodiment of the present application.

[0028] Fig.10 for Fig. 9 Schematic diagram of the cross section of the middle pole piece.

[0029] Notes on the attached drawings:

[0030] 1. Grooving device; 11. Mounting member; 111. Mounting groove; 12. Grooving member; 121. Grooving portion; 1211. First end; 1212. Second end; 122. Connecting portion; 13. Adjusting member; 131. First adjusting portion; 132. Second adjusting portion; 2. Unwinding and rewinding device; 21. Unwinding device; 22. Rewinding device; 3. Coating device; 31. First coating device; 32. Second coating device; 4. Drying device; 41. First oven; 42. Second oven; 5. Pole piece; 51. Current collector; 52. Active material layer; 521. Groove; F1. First direction; F2. Second direction; F3. Third direction. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0032] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0033] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0035] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method. Among them, the "first direction" may be the thickness direction of the pole piece; the "second direction" may be the transmission direction of the pole piece or the length direction of the pole piece; the "third direction" may be the width direction of the pole piece.

[0037] In the production process of battery pole pieces, five steps are required in sequence: slurry preparation, slurry coating, rolling, pole piece slitting and drying. Among them, the coating process is mainly divided into two stages. One is to evenly coat the slurry on the current collector, and the other is to dry the wet slurry on the current collector through a drying oven to form an active material coating. Rolling means that after the slurry coating is completed, a press is used to press the active material layer under high pressure and compress it to a specified density to increase the adhesion between the active material and the current collector, thereby reducing the porosity.

[0038] It is understandable that after the density of the active material coating increases after the roller pressing process, in the subsequent electrolyte solution infiltration process, it is easy for the electrolyte solution to have difficulty in quickly penetrating the entire electrode through the active material coating, resulting in an increase in the impregnation time. In order to solve this problem, in the related art, a roller-like structure is set on the press, which is used to roll out a groove-like structure directly on the slurry surface during the electrode forming process, thereby forming a groove on the surface of the active material layer for guiding the electrolyte in the electrolyte penetration direction, thereby shortening the impregnation time and allowing the electrolyte to quickly penetrate the entire electrode.

[0039] However, when the groove part is formed by roller extrusion, the density of the active material in the part squeezed by the roller will inevitably be higher than the density of the active material in the part not squeezed. In this state of uneven weight density distribution, it becomes difficult for the electrolyte solution to pass through the squeezed part, resulting in uneven distribution of the electrolyte solution on the electrode surface, affecting the quality of the finished electrode.

[0040] Therefore, in order to ensure the high permeability of the electrolyte solution, technicians in the relevant field have improved the construction of the grooves by setting a groove structure to move back and forth on the wet slurry surface to draw grooves to guide the electrolyte solution to penetrate the electrode, thereby shortening the immersion time. However, the existing groove structure has a fixed shape and is difficult to adapt to the groove requirements of electrodes of different specifications.

[0041] Therefore, in order to expand the application scope of the groove structure, the present application provides a groove device for electrode coating and a electrode processing system. Figure 1-10 The embodiments of the present application are described in further detail.

[0042] See also Figure 1 , Figure 1 A schematic diagram of a pole piece processing system in an embodiment of the present application is shown. An embodiment of the present application provides a pole piece 5 processing system, including a winding and unwinding device 2, a coating device 3, a drying device 4 and a grooving device 1 for coating the pole piece 5.

[0043] Among them, the unwinding and winding device 2 includes an unwinding device 21 and a winding device 22. The unwinding device 21 is arranged at the starting end of the production line and is used to unwind the collector 51. The winding device 22 is arranged corresponding to the unwinding device 21 and is located at the end of the production line, and is used to wind up the processed electrode 5. The above-mentioned coating device 3, drying device 4 and grooving device 1 for coating the electrode 5 are all located between the unwinding device 21 and the winding device 22.

[0044] Specifically, the coating device 3 includes a first coating device 31 and a second coating device 32 arranged at intervals. Along the first direction F1, the pole piece 5 includes a first side and a second side arranged opposite to each other. The first coating device 31 is arranged on the first side of the pole piece 5, and is used to coat the slurry on the surface of the first side of the current collector 51 to form an upper slurry layer; the second coating device 32 is arranged on the second side of the pole piece 5, and is used to coat the slurry on the surface of the second side of the current collector 51 to form a lower slurry layer.

[0045] In the embodiment of the present application, the first coating device 31 and the second coating device 32 are respectively arranged on two opposite sides of the current collector 51 in the first direction F1. Accompanied by the unwinding and rewinding operations of the unwinding device 21 and the rewinding device 22, the coating work of the upper and lower layers of the slurry on the electrode sheet 5 can be completed synchronously to ensure processing efficiency.

[0046] In some embodiments, in order to synchronously dry the upper and lower layers of slurry, the drying device 4 specifically includes a first oven 41 and a second oven 42 arranged at intervals, and the first oven 41 and the second oven 42 are both used to bake the slurry so that the slurry solidifies on the surface of the current collector 51 to form an active material layer 52.

[0047] Specifically, the first oven 41 is arranged on the first side of the pole piece 5 to bake the upper slurry layer to form the upper active material layer 52. The second oven 42 is arranged on the second side of the pole piece 5 to bake the lower slurry layer to form the lower active material layer 52.

[0048] Continue reading Figure 1 As shown, correspondingly, at least two electrode coating grooving devices 1 are also provided. In the embodiment of the present application, only one pair of electrode coating grooving devices 1 is provided in each production line as an example. It can be understood that in some other embodiments, according to the actual grooving requirements, three or more electrode coating grooving devices 1 can be provided.

[0049] In some embodiments, the notching device 1 is arranged between the drying device 4 and the coating device 3 to perform notching on the slurry layer in a wet state before the drying operation. That is, one notching device 1 is arranged between the first oven 41 and the first coating device 31, and the other notching device 1 is arranged between the second oven 42 and the second coating device 32.

[0050] During the transmission of the electrode 5, a pair of notching devices 1 disposed on the first side and the second side of the electrode 5 respectively notch the upper slurry layer and the lower slurry layer of the electrode 5, thereby ensuring processing efficiency. In addition, in the embodiment of the present application, notches 521 can be formed on the surface of the electrode 5 by notching, and the notches 521 are used to accommodate and store electrolyte, which can effectively improve the infiltration speed and the amount of liquid retained.

[0051] See also Figure 2As shown, Figure 2 A schematic diagram of a pole piece processing system in another embodiment of the present application is shown. In some other embodiments, the notching device 1 is arranged in the drying device 4 to perform notching on the slurry layer being dried in the drying device 4. It is understandable that in order to ensure the notching effect, the installation position of the notching device 1 needs to be specially designed, that is, the notching device 1 can notch the wet slurry before the dry-wet transition point of the slurry, and the groove 521 can be directly formed on the surface of the pole piece 5 after subsequent drying.

[0052] Combination Figure 3 and Figure 4 As shown, Figure 3 A schematic diagram of a grooving device for electrode coating in one embodiment of the present application is shown. Figure 4 The schematic diagram of the scoring member and the adjusting member in one embodiment of the present application is shown. The scoring device 1 is used to score on the wet slurry surface, and after the slurry layer is dried to form an active material layer 52, a groove 521 for guiding the penetration of the electrolyte solution will be directly formed on the surface of the electrode 5.

[0053] Specifically, the notching device 1 includes a mounting member 11 for connecting to a production line frame and at least one notching member 12, and the notching member 12 is detachably mounted on the mounting member 11. In the embodiment of the present application, the mounting member 11 and the frame can be connected by a driving member such as a cylinder (not shown), which can drive the mounting member 11 to move in the first direction F1, so that the notching member 12 can extend into the pole piece 5 along the first direction F1. The connection method of the driving member such as the cylinder is a conventional setting and will not be described in detail here.

[0054] Furthermore, in some embodiments, the notching device 1 further includes an adjusting member 13, and the notching member 12 can be movably mounted on the mounting member 11 by means of the adjusting member 13, and the mounting position of the notching member 12 on the mounting member 11 can be adjusted by the adjusting member 13. Thus, the mounting position of the notching member 12 on the mounting member 11 can be adjusted by the adjusting member 13, so as to adapt to the processing requirements of pole pieces 5 of different specifications.

[0055] Continue reading Figure 3 As shown, the mounting member 11 includes at least one mounting groove 111 that penetrates the mounting member 11 along the first direction F1, and all the mounting grooves 111 are arranged at intervals along the second direction F2. In the embodiment of the present application, only two mounting grooves 111 are arranged on each mounting member 11 as an example for illustration. It is understandable that in some other embodiments, only one mounting groove 111 may be provided on each mounting member 11, or three or more mounting grooves 111 may be provided, all the mounting grooves 111 extend along the third direction F3, and a plurality of groove members 12 are arranged at intervals in the mounting grooves 111.

[0056] In the embodiment of the present application, in the third direction F3, the size of the mounting groove 111 should be set as large as possible, at least larger than the size of the pole piece 5 in the third direction F3, so that the mounting groove 111 can achieve full coverage of the pole piece 5 in the third direction F3, so that the notching member 12 can perform notching operations on the edge of the pole piece 5. The third direction F3 is also the width direction of the pole piece 5, and the second direction F2 is the length direction of the pole piece 5 (i.e., the transmission direction of the pole piece processing system).

[0057] Among them, the groove member 12 can be passed through and fixed in the installation groove 111 along the first direction F1 with the help of the adjustment member 13, and the groove member 12 can move in the installation groove 111 along the third direction F3 to achieve switching between different installation positions, thereby adapting to the requirements of different groove positions of different pole pieces 5.

[0058] Specifically, the groove member 12 includes a groove portion 121 and a connecting portion 122 connected to the groove portion 121 along a first direction F1. Along the first direction F1, the connecting portion 122 can be inserted into the mounting member 11 through the mounting groove 111, and can be movably installed on the mounting member 11 with the aid of an adjusting member 13. By adjusting the connection position between the adjusting member 13 and the connecting portion 122 and the number of groove members 12, the groove depth and the number of grooves can be adjusted.

[0059] During the actual processing, the operator can control the depth of the grooves by adjusting the height of the groove piece 12 from the coating surface. It is also possible to install a corresponding number of groove pieces 12 in the mounting groove 111 of the mounting piece 11 according to the number of grooves required for the electrode 5 to be processed, thereby meeting the number of grooves required. In addition, when it is necessary to reduce the number of grooves without disassembling the machine, the operator can also use the adjustment member 13 to adjust the position of part of the groove piece 12 in the first direction F1, so that part of the groove portion 121 is separated from the electrode 5, thereby achieving rapid adjustment of the number of grooves. It is also possible to make different groove portions 121 at different heights from the coating surface, thereby forming grooves 521 of different depths on the electrode 5.

[0060] See also Figure 5 and Figure 6 As shown, Figure 5 FIG. 1 shows a plan view of a pole piece in an embodiment of the present application. Figure 6 Shows Figure 5 Schematic diagram of the cross section of the middle pole piece. In the embodiment of the present application, a plurality of grooves 12 are arranged on each mounting member 11, and all the grooves 12 are evenly arranged along the third direction F3. In addition, the grooves 12 of the groove device 1 arranged on the first side and the second side of the pole piece 5 are arranged one by one, so that the grooves 521 on the surface of the active material layer 52 on the first side and the second side of the pole piece 5 are also arranged one by one.

[0061] See also Figure 7 and Figure 8 As shown, Figure 7 FIG. 2 shows a plan view of a pole piece in another embodiment of the present application. Figure 8 for Figure 7 In some other embodiments, by adjusting the installation position of the notching member 12, the notching members 12 on the notching device 1 disposed on the first side and the second side of the pole piece 5 can also be arranged one by one at intervals, so that the grooves 521 on the surface of the active material layer 52 on the first side and the second side of the pole piece 5 are also arranged one by one at intervals.

[0062] See also Fig. 9 and Fig.10 As shown, Fig. 9 FIG. 2 shows a plan view of a pole piece in another embodiment of the present application. Fig.10 for Fig. 9 In some other embodiments, by adjusting the installation position of the notching member 12, the notching members 12 on the mounting member 11 can be all concentrated in the installation position in the middle area of ​​the mounting groove 111, so that the grooves 521 on the surface of the active material layer 52 on the first side and the second side of the pole piece 5 are concentrated in the middle area of ​​the pole piece 5.

[0063] Continue reading Figure 3 As shown, in some embodiments, the adjusting member 13 includes a first adjusting portion 131 and a second adjusting portion 132 movably connected to the connecting portion 122. Along the first direction F1, the first adjusting portion 131 and the second adjusting portion 132 are respectively arranged on opposite sides of the mounting member 11 and can abut against the end surface of the mounting member 11. In order to ensure the installation stability of the adjusting member 13, in the embodiment of the present application, in the third direction F3, the size of the mounting groove 111 is smaller than the size of the first adjusting member 13 and the second adjusting member 13, and the first adjusting portion 131 and the second adjusting portion 132 are clamped together on the surface of the mounting member 11, so that the groove member 12 is detachably fixed to the mounting member 11.

[0064] Specifically, the connecting portion 122 may be a screw extending along the first direction F1, and the first adjusting portion 131 and the second adjusting portion 132 may be common nuts. The first adjusting portion 131 and the second adjusting portion 132 are respectively threadedly connected to the connecting portion 122, so that the grooved member 12 can be movably mounted on the mounting member 11.

[0065] In some embodiments, the scoring portion 121 is configured as a cone-shaped structure. Along the first direction F1, the scoring portion 121 includes a first end 1211 connected to the connecting portion 122 and a second end 1212 arranged opposite to the first end 1211, and the second end 1212 is closer to the pole piece 5 than the first end 1211. In the second direction F2, the size of the second end 1212 is much smaller than the size of the first end 1211 to form a tip, and the second end 1212 is used to contact the pole piece 5 to achieve the scoring operation on the slurry layer, thereby avoiding the portion where the scoring portion 121 contacts the slurry layer from squeezing the slurry layer, affecting the slurry density of the slurry layer near the groove 521, and thus making the overall density of the active material layer 52 uniform, so as to improve the infiltration speed and liquid retention of the electrolyte.

[0066] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A grooving device for electrode coating, characterized in that: The slotting device comprises: Mounting parts for connecting to the rack; at least one notching member, the notching member being mountable to the mounting member, and being configured to extend into the pole piece along a first direction when notching; and The adjusting member is used to movably mount the groove member on the mounting member so as to adjust the mounting position of the groove member on the mounting member.

2. The electrode coating scribing device according to claim 1, characterized in that: The mounting member includes at least one mounting groove penetrating the mounting member along the first direction, all the mounting grooves are arranged at intervals along the second direction, the mounting groove is configured to extend along a third direction, and along the third direction, a plurality of the groove members can be arranged at intervals in the mounting groove; The first direction, the second direction and the third direction are perpendicular to each other.

3. The electrode coating scribing device according to claim 2, characterized in that: The grooved member includes a grooved portion and a connecting portion connected to the grooved portion. Along the first direction, the connecting portion can be inserted into the mounting member through the mounting groove and can be movably mounted on the mounting member with the aid of the adjusting member.

4. The electrode coating grooving device according to claim 3, characterized in that: The adjusting member includes a first adjusting portion and a second adjusting portion movably connected to the connecting portion. Along the first direction, the first adjusting portion and the second adjusting portion are respectively abutted against two opposite sides of the mounting member.

5. The electrode coating grooving device according to claim 4, characterized in that: The connecting portion is threadedly connected to the first adjusting portion and the second adjusting portion.

6. The electrode coating scribing device according to claim 3, characterized in that: The groove portion is configured as a cone structure. Along the first direction, the groove portion includes a first end connected to the connection portion and a second end arranged opposite to the first end. In the second direction, the size of the first end is larger than that of the second end.

7. The electrode coating scribing device according to claim 2, characterized in that: In the third direction, the size of the mounting groove is set to be larger than the size of the pole piece.

8. A pole piece processing system, characterized in that: The pole piece processing system includes: The unwinding and rewinding device comprises an unwinding device and a rewinding device for unwinding and rewinding the pole piece respectively, so as to realize the transmission of the pole piece; A coating device, disposed between the unwinding device and the winding device, and used to coat the wet slurry on the surface of the current collector to form a pole piece; a drying device, disposed between the coating device and the winding device, the drying device being used to dry the slurry to form an active material layer; and At least two grooving devices for electrode coating as described in any one of claims 1-7, wherein the grooving device is arranged between the coating device and the drying device, or the grooving device is arranged in the drying device, and at least two of the grooving devices are respectively used to perform grooving on opposite sides of the electrode.

9. The pole piece processing system according to claim 8, characterized in that: The coating device includes a first coating device and a second coating device, wherein the first coating device is used to coat the slurry on one side surface of the current collector to form an upper slurry layer, and the second coating device is used to coat the slurry on the other side surface of the current collector to form a lower slurry layer.

10. The pole piece processing system according to claim 9, characterized in that: The drying device includes a first oven and a second oven, the first oven is used for drying the upper slurry layer, wherein one of the grooving devices is arranged in the first oven, or between the first oven and the first coating device; the second oven is used for drying the lower slurry layer, and another of the grooving devices is arranged in the second oven, or between the second oven and the second coating device.

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