Pole piece scribing equipment and method

Abstract

The invention relates to the technical field of pole piece processing, and particularly discloses pole piece scribing equipment and a pole piece scribing method. The pole piece lineation equipment comprises a back roller and a lineation mechanism, the back roller is used for supporting a pole piece and providing conveying driving force for the pole piece through rotation of the back roller; the scribing mechanism comprises a scribing cutter; the marking tool is arranged on the side of the back roller, and the marking tool is embedded into the pole piece on the back roller. The back roller can drive the pole piece to be conveyed and meanwhile provide support for scribing of the scribing tool, so that the pole piece can be continuously cut by the scribing tool to form nicks while being conveyed. According to the scheme, through a physical scribing mode, the safety is high, the equipment cost is low, meanwhile, conveying and scribing of the pole piece can be synchronously carried out, operation such as re-debugging after shutdown of laser equipment is not needed when a material belt of the pole piece is replaced, and therefore the control difficulty can be lowered.

Description

Technical Field

[0001] The present application relates to the field of pole piece processing technology, and in particular to a pole piece scribing device and method. Background Art

[0002] Pole sheet scribing refers to the process of making linear marks on the surface of the battery pole sheet; scribing can increase the surface area of ​​the pole sheet, reduce the current density of the electrode, thereby reducing polarization, improving the battery's charge and discharge efficiency and cycle life, thereby achieving the purpose of improving the electrochemical and mechanical properties of the pole sheet.

[0003] Commonly used pole piece scribing methods are chemical etching and laser scribing to perform scribing operations on the pole piece material strip. Among them, chemical etching requires the use of corrosive chemical reagents, and different reagents need to be configured according to different pole piece materials. Its safety is low and its application scenarios are limited. Laser scribing uses lasers to scribble on pole pieces. The equipment required is expensive, and the laser power needs to be precisely controlled to avoid scribing through the pole piece. Therefore, there is also the problem of difficulty in control. In addition, laser scribing requires the use of electrical connections to feedback the scribing signal, and a time difference is required to provide signal feedback, which has the problem of slow scribing speed. Summary of the invention

[0004] In view of this, the purpose of the present application is to provide a pole piece scribing device and method for solving some or all of the above problems.

[0005] In order to achieve the above technical objectives, the first aspect of the present application provides a pole piece scribing device, comprising: a backing roller and a scribing mechanism;

[0006] The back roller is used to support the pole piece and provide a conveying driving force for the pole piece through its own rotation;

[0007] The scribing mechanism comprises: a scribing tool;

[0008] The scribing tool is arranged beside the backing roller, and the scribing tool is embedded in the pole piece on the backing roller.

[0009] Further, at the contact position between the scribing tool and the pole piece, the cutting direction of the scribing tool and the tape running direction of the pole piece form an angle α.

[0010] Furthermore, the angle α is an obtuse angle.

[0011] Further, it also includes: a main frame;

[0012] The back roller can be rotatably arranged on the main frame;

[0013] The scribing tool is arranged on the main frame, and the scribing tool can move close to or away from the backing roller.

[0014] Further, the scribing mechanism comprises: a tool support, a horizontal drive member and a vertical drive member;

[0015] The tool support is arranged on the main frame, and the tool support can move in the vertical direction;

[0016] The scribing tool is arranged on the tool support, and the scribing tool can move in a horizontal direction toward or away from the backing roller;

[0017] The vertical driving member is arranged on the main frame, and the output end of the vertical driving member is connected to the tool support;

[0018] The horizontal driving member is arranged on the tool support, and the output end of the horizontal driving member is connected to the scribing tool.

[0019] Further, the scribing mechanism comprises: a plurality of fine-tuning members and a fixed support;

[0020] The fixed support is connected to the main frame;

[0021] The scribing tool is arranged on the fixed support, and the scribing tool can move along its own cutting direction;

[0022] A plurality of the fine-tuning parts are arranged on the fixed support at intervals along the length direction of the scribing tool;

[0023] The fine-tuning member is used to push the scribing tool to move.

[0024] Further, it also includes a rotation drive member;

[0025] The scribing tool can be rotatably arranged on the main frame;

[0026] The rotary drive member is connected to the scribing tool and is used to drive the scribing tool to rotate so as to adjust the cutting angle of the scribing tool or to drive the scribing tool to rotate.

[0027] Further, the length direction of the scribing tool is parallel to the axial direction of the backing roller;

[0028] The scribing tool is provided with a plurality of saw teeth embedded in the pole piece.

[0029] Further, the scribing tool comprises a plurality of;

[0030] The scribing mechanism comprises: a tool support;

[0031] The scribing tool is arranged on the tool support, and the scribing tool can move on the tool support in a direction parallel to the axial direction of the back roller;

[0032] The scribing mechanism includes a plurality of sliding drive members;

[0033] The plurality of sliding driving members are respectively connected to the plurality of scribing tools, and the plurality of sliding driving members are used to drive the plurality of scribing tools to move in a direction parallel to the axial direction of the back roller, so that the saw teeth of the plurality of scribing tools overlap or stagger with each other.

[0034] Furthermore, the length direction of the scribing tool is perpendicular to the axial direction of the backing roller;

[0035] The scribing tool comprises a plurality of;

[0036] A plurality of scribing tools are arranged in parallel and at intervals.

[0037] Furthermore, a plurality of the scribing tools are arranged on a tool shaft, and a spacing between the plurality of the scribing tools can be adjusted on the tool shaft.

[0038] Further, it also includes: a first dust collection component;

[0039] The scribing tool is arranged on the side of the backing roller in the horizontal direction;

[0040] The first dust suction component is arranged below the scribing tool.

[0041] Further, it also includes: a second dust collection component;

[0042] The second dust suction assembly faces the pole piece and is arranged downstream of the scribing tool along the conveying direction of the pole piece.

[0043] Furthermore, it also includes: a brush dust removal component;

[0044] The brush dust removal assembly comprises: a brush roller;

[0045] The brush roller abuts against the pole piece and is arranged downstream of the scribing tool along the conveying direction of the pole piece.

[0046] A second aspect of the present application provides a pole piece scribing method, comprising:

[0047] A rotatable backing roller is provided, and the pole piece is laid on the backing roller;

[0048] A scribing tool is provided to be embedded in the pole piece on the backing roller, and the included angle between the cutting direction of the scribing tool at the contact point and the running direction of the pole piece is an obtuse angle;

[0049] When the back roller rotates and drives the pole piece to move, the scribing tool cuts the pole piece to form a notch on the surface of the pole piece.

[0050] It can be seen from the above technical scheme that the present application provides a pole piece scribing equipment and method; wherein, the pole piece scribing equipment comprises: a back roller and a scribing mechanism; the back roller is used to support the pole piece and provide a conveying driving force for the pole piece through its own rotation; the scribing mechanism comprises: a scribing tool; the scribing tool is arranged beside the back roller, and the scribing tool is embedded in the pole piece on the back roller.

[0051] The back roller can drive the pole piece for transportation and provide support for the marking of the marking tool, so that the pole piece can be continuously cut by the marking tool to form a mark while being transported. This solution uses physical marking, which is highly safe and has low equipment cost. The speed control is controlled by mechanical equipment, and there is no need to wait for the signal lag period to complete the marking. It is significantly faster than laser marking. At the same time, the transportation and marking of the pole piece can be carried out simultaneously. When replacing the pole piece strip, there is no need to shut down and re-debug as in the case of laser equipment, which can reduce the difficulty of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0053] Figure 1 A schematic diagram of the overall structure of a pole piece scribing device provided in an embodiment of the present application;

[0054] Figure 2 A schematic diagram of a scribing mechanism of a pole piece scribing device provided in an embodiment of the present application;

[0055] Figure 3 A schematic diagram of a pole piece scribing device provided in an embodiment of the present application when the angle between the cutting direction of the scribing tool and the running direction of the pole piece is an acute angle;

[0056] Figure 4 A schematic diagram of a pole piece scribing device provided in an embodiment of the present application when the angle between the cutting direction of the scribing tool and the running direction of the pole piece is an obtuse angle;

[0057] Figure 5 A schematic diagram of the overall structure of a pole piece scribing device provided in another embodiment of the present application;

[0058] Figure 6 A schematic diagram of a scribing tool for a pole piece scribing device provided in another embodiment of the present application;

[0059] Figure 7A schematic diagram of a scribing tool for a pole piece scribing device provided in an embodiment of the present application;

[0060] Figure 8 A schematic diagram of a brush dust removal assembly of a pole piece scribing device provided in an embodiment of the present application;

[0061] In the figure:

[0062] 10. Back roller

[0063] 20. Marking mechanism; 21. Marking tool; 22. Tool support; 23. Horizontal drive member; 24. Vertical drive member; 25. Tool shaft; 26. Fine adjustment member; 27. Fixed support; 28. Rotary drive member; 29. ​​Horizontal support platform;

[0064] 30. Main frame;

[0065] 40. A first dust collecting component;

[0066] 50. Second dust collecting assembly; 51. Lifting motor;

[0067] 60. Brush dust removal assembly; 61. Brush roller;

[0068] α: the angle between the cutting direction of the scribing tool and the running direction of the pole piece; X-axis direction: horizontal direction; Y-axis direction: vertical direction; Arrow 1: the cutting direction of the scribing tool; Arrow 2: the cutting direction of the scribing tool; Arrow 3: the running direction of the pole piece. DETAILED DESCRIPTION

[0069] The technical solutions of the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the specification of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection requested by the present application.

[0070] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0071] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a replaceable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0072] See also Figure 1 and Figure 2 A first aspect provided in an embodiment of the present application provides a pole piece scribing device, including: a back roller 10 and a scribing mechanism 20.

[0073] The back roller 10 is used to support the pole piece and provide a conveying driving force for the pole piece through its own rotation; the scribing mechanism 20 includes: a scribing tool 21; the scribing tool 21 is arranged beside the back roller 10, and the scribing tool 21 is embedded in the pole piece on the back roller 10.

[0074] In this embodiment, the pole piece is in a strip shape, which can be continuously transported following the rotation of the back roller 10. Since the scribing tool 21 is embedded in the pole piece, the scribing tool 21 can continuously cut the pole piece during the continuous transport of the pole piece, so that a notch is formed on the pole piece passing through the back roller 10.

[0075] Compared with chemical etching and laser scribing, this solution has higher safety and lower equipment cost. In addition, the scribing operation of the scribing tool 21 can be started and stopped synchronously with the conveying of the electrode piece, which is more convenient for the staff to control.

[0076] In one embodiment, see Figure 3 or Figure 4 At the contact position between the scribing tool 21 and the pole piece, the cutting direction of the scribing tool 21 forms an angle α with the running direction of the pole piece.

[0077] The cutting direction of the scribing tool 21 refers to the direction in which the blade cuts into the pole piece. Figure 3 or Figure 4 As shown by arrow 1 or arrow 2 in the figure. The pole piece's tape running direction refers to the direction in which the pole piece is transported, such as Figure 3 or Figure 4 As shown by arrow 3 in FIG. It should be noted that when the pole piece follows the back roller 10 and is transported in an arc, the running direction of any point of the pole piece on the back roller 10 is the tangent direction of the point on the back roller 10, as shown in FIG. Figure 3 or Figure 4 as shown in .

[0078] The inventors have found that when the scribing tool 21 cuts into the pole piece at an angle, that is, when the cutting direction forms an angle with the pole piece, the scribing tool 21 is easier to cut into the pole piece than when the scribing tool 21 is set parallel to the slice, thereby achieving a better scribing effect.

[0079] In a more specific embodiment, the angle α is an obtuse angle.

[0080] For both directions, Figure 3 As shown, at this time, the angle α formed between the arrow 2 and the arrow 3 is an acute angle, that is, at this time, the cutting direction of the scribing tool 21 forms an acute angle with the running direction of the pole piece.

[0081] like Figure 4 As shown, at this time, the angle α formed between the arrow 1 and the arrow 3 is an obtuse angle, that is, at this time, the cutting direction of the scribing tool 21 forms an obtuse angle with the running direction of the pole piece.

[0082] The inventors have found that when the angle α is an obtuse angle, the cutting effect of the scribing tool 21 is better than other angles, which can reduce the scribing resistance of the scribing tool 21, reduce the wear of the scribing tool 21, reduce the risk of chipping of the scribing tool 21, and help the scribing tool 21 to scribing more smoothly, thereby improving the uniformity of scribing. At the same time, the scribing tool 21 cutting at the angle α helps to discharge debris and waste during the scribing process, thereby improving the cutting efficiency.

[0083] In one embodiment, the pole piece scribing equipment further includes: a main frame 30; a back roller 10 rotatably disposed on the main frame 30, so that the back roller 10 can drive the pole piece for transportation; a scribing tool 21 is disposed on the main frame 30, and the scribing tool 21 can move close to or away from the back roller 10.

[0084] In this embodiment, the scribing tool 21 can be moved to adjust the distance between it and the back roller 10. Before inserting the pole piece, the scribing tool 21 can be moved away from the back roller 10 so that the pole piece can pass between the back roller 10 and the scribing tool 21. Afterwards, the scribing tool 21 is moved to be embedded in the pole piece. Before or during scribing, the scribing tool 21 can also be moved to adjust its scribing depth, thereby adjusting the depth of the scratch formed.

[0085] For more specific examples, see Figure 2The marking mechanism 20 includes: a tool holder 22, a horizontal driving member 23 and a vertical driving member 24; the tool holder 22 is arranged on the main frame 30, and the tool holder 22 can move in the vertical direction; the marking tool 21 is arranged on the tool holder 22, and the marking tool 21 can move in the horizontal direction toward or away from the back roller 10; the vertical driving member 24 is arranged on the main frame 30, and the output end of the vertical driving member 24 is connected to the tool holder 22; the horizontal driving member 23 is arranged on the tool holder 22, and the output end of the horizontal driving member 23 is connected to the marking tool 21.

[0086] In this embodiment, the scribing tool 21 may be disposed on a liftable tool support 22 , so that the vertical drive member 24 can drive the tool support 22 , the horizontal drive member 23 and the scribing tool 21 to rise and fall synchronously.

[0087] As an implementation manner, the output end of the horizontal driving member 23 is directly connected to the scribing tool 21 .

[0088] As another embodiment, the scribing tool 21 is fixedly arranged on the horizontal support platform 29. The horizontal support platform 29 is slidably arranged on the tool bracket 22 in the horizontal direction, and the output end of the horizontal driving member 23 is connected to the horizontal support platform 29, so that the horizontal driving member 23 can drive the horizontal support platform 29 and the scribing tool 21 to move synchronously in the horizontal direction.

[0089] As an implementation mode, the horizontal driving member 23 and the vertical driving member 24 may be cylinders or linear motors, etc.

[0090] In practical applications, such as Figure 2 As shown, Figure 2 The Y-axis direction is the vertical direction, and the X-axis direction is the horizontal direction perpendicular to the Y-axis direction. The scribing tool 21 is arranged on one side of the backing roller 10 along the horizontal direction, for example, Figure 2 correspondingly, the horizontal driving member 23 drives the scribing tool 23 to move horizontally in the direction of the X-axis.

[0091] In one embodiment, see Figure 2 The marking mechanism 20 includes: a plurality of fine-tuning parts 26 and a fixed support 27; the fixed support 27 is connected to the main frame 30; the marking tool 21 is arranged on the fixed support 27, and the marking tool 21 can move along its own cutting direction; a plurality of fine-tuning parts 26 are arranged on the fixed support 27 at intervals along the length direction of the marking tool 21; the fine-tuning parts 26 are used to push the marking tool 21 to move.

[0092] The fine adjustment member 26 can be, for example, a micrometer adjuster. The multiple fine adjustment members 26 can push different parts of the marking tool 21, so that when the multiple fine adjustment members 26 are adjusted, the position of the marking tool 21 along the cutting direction can be finely adjusted to ensure that the embedding depth of the marking tool 21 can meet the required accuracy requirements.

[0093] In the above embodiment with the tool holder 22, the horizontal drive member 23 and the vertical drive member 24, the fixed support 27 can be arranged on the tool holder 22, so that the scribing tool 21 can move horizontally, vertically and fine-tune the cutting direction.

[0094] In one embodiment, a rotary drive member 28 is further included; the scribing tool 21 can be rotatably arranged on the main frame 30; the rotary drive member 28 is connected to the scribing tool 21, and is used to drive the scribing tool 21 to rotate to adjust the cutting angle of the scribing tool 21 or drive the scribing tool 21 to rotate.

[0095] As an embodiment, the scribing tool 21 can be driven to rotate by the rotating driving member 28 to change its cutting angle and cutting depth. This embodiment can be set without including the above-mentioned fine adjustment member 26, the horizontal driving member 23 and / or the vertical driving member 24, that is, the scribing tool 21 is controlled to approach or move away from the back roller 10 only by the rotating driving member 28.

[0096] As an embodiment, the rotary drive member 28 can be provided in the case of including the above-mentioned fine adjustment member 26, the horizontal drive member 23 and / or the vertical drive member 24, that is, the scribing tool 21 has both translation and rotation functions, has higher flexibility, and can adapt to a variety of different on-site working conditions. Figure 2 As shown, the rotary drive member 28 can be disposed on the fixed support 27 .

[0097] As an implementation mode, during the scribing process, the rotary drive member 28 can drive the scribing tool 21 to rotate to improve its scribing effect on the pole piece.

[0098] In a corresponding embodiment, Figure 5 and Figure 6 As shown, the length direction of the scribing tool 21 is perpendicular to the axial direction of the backing roller 10; the scribing tool 21 includes a plurality of scribing tools 21; and the plurality of scribing tools 21 are arranged in parallel and at intervals.

[0099] In this embodiment, the length direction of the scribing tool 21 is parallel to its cutting direction. In addition, the scribing tool 21 may be disc-shaped. This embodiment may be provided on the basis of the horizontal drive member 23 and the vertical drive member 24 provided above, and the distance between the scribing tool 21 and the backing roller may be adjusted by the horizontal drive member 23 and the vertical drive member 24.

[0100] In a further improved embodiment, a plurality of scribing tools 21 are disposed on the tool shaft 25 , and the spacing between the plurality of scribing tools 21 can be adjusted on the tool shaft 25 .

[0101] In this embodiment, Figure 5 and Figure 6 As shown, the rotary drive member 28 can be disposed on the main frame 30 and located at the axial side of the knife shaft 25. The output end of the rotary drive member 28 can be connected to the knife shaft 25, and drive the plurality of scribing tools 21 to rotate by driving the knife shaft 25 to rotate.

[0102] In this embodiment, fine-tuning bolts may be connected between the multiple scribing tools 21. When the multiple scribing tools 21 rotate, the fine-tuning bolts rotate along with the scribing tools 21. When adjustment is required, rotating the fine-tuning bolts can lengthen or shorten them, thereby adjusting the spacing between two adjacent scribing tools 21.

[0103] By adjusting the spacing between the multiple scribing tools 21 , lines with different line widths can be engraved on the pole piece to meet a variety of different scribing requirements.

[0104] In another embodiment, see Figure 2 and Figure 7 The length direction of the scribing tool 21 is parallel to the axial direction of the back roller 10; the scribing tool 21 is provided with a plurality of saw teeth embedded in the pole piece.

[0105] In this embodiment, the length direction of the scribing tool 21 is perpendicular to its cutting direction. When the electrode piece is conveyed, the plurality of saw teeth cut respectively, so that a plurality of scribing lines are formed on the electrode piece.

[0106] In a further improved embodiment, Figure 2 As shown, the scribing tool 21 includes a plurality of scribing tools; the scribing mechanism 20 includes: a tool support 22; the scribing tool 21 is arranged on the tool support 22, and the scribing tool 21 can move on the tool support 22 in a direction parallel to the axial direction of the back roller; the scribing mechanism 20 includes a plurality of sliding drive members (in Figure 2 The plurality of sliding drives are respectively connected to the plurality of scribing tools 21, and the plurality of sliding drives are used to drive the plurality of scribing tools 21 to move in a direction parallel to the axial direction of the back roller, so that the saw teeth of the plurality of scribing tools 21 overlap or stagger with each other.

[0107] Specifically, the sliding drive member can be disposed on the above-mentioned fixed support 27. The sliding drive member can drive the scribing tool 21 to be fine-tuned in a direction parallel to the axial direction of the back roller, thereby changing the position of the saw teeth.

[0108] Taking the example of n saw teeth provided on the scribing tool 21, one scribing tool 21 can carve n lines on the moving pole piece. In this embodiment, the scribing tool 21 includes a; therefore, when a scribing tools 21 are overlapped, a scribing tools 21 also carve n lines on the moving pole piece. When a scribing tools 21 are staggered, the number of lines carved by a scribing tool 21 on the moving pole piece can be 2n...an lines (a≥2). Moreover, by adjusting the staggered distance among the multiple scribing tools 21, the width and spacing of the lines can be adjusted.

[0109] In another embodiment provided in this application, please refer to Figure 5 The pole piece scribing device further includes: a first dust suction assembly 40; a scribing tool 21 is arranged on the side of the back roller 10 in the horizontal direction; and the first dust suction assembly 40 is arranged below the scribing tool 21.

[0110] The waste generated in the process of the scribing tool 21 cutting the pole piece will fall to the bottom of the scribing tool 21 and be sucked by the first dust suction component 40, so as to remove the fallen waste and the generated dust, thereby improving the cleanliness of the pole piece after cutting.

[0111] As a further improvement, see Figure 1 or Figure 5 The pole piece scribing device further includes: a second dust suction component 50; the second dust suction component 50 faces the pole piece and is arranged downstream of the scribing tool 21 along the conveying direction of the pole piece.

[0112] In this embodiment, the pole piece is transported upward from the bottom of the back roller L10. The scribing tool 21 is arranged on the side of the back roller 10 in the horizontal direction and tilted downward. The second dust suction component 50 can be arranged above the back roller 10, so that the pole piece that has been dusted once by the first dust suction component 40 can be dusted for the second time.

[0113] As an embodiment, the second dust suction assembly 50 can be raised and lowered on the main frame 30. Specifically, the second dust suction assembly 50 is connected to a lifting motor 51, and the lifting motor 51 can drive the second dust suction assembly 50 to rise and fall to adjust the distance between the second dust suction assembly 50 and the back roller 10.

[0114] Based on any of the above embodiments, please refer to Figure 8 The pole piece scribing device also includes: a brush dust removal assembly 60; the brush dust removal assembly 60 includes: a brush roller 61; the brush roller 61 abuts against the pole piece and is arranged downstream of the scribing tool 21 along the conveying direction of the pole piece.

[0115] The brush roller 61 abuts against the pole piece, so that the dust remaining on the pole piece can be swept off by a contact dust removal method, and adsorbed by the suction member on the brush dust removal assembly 60. In application, the brush roller 61 can be arranged above the suction member.

[0116] A second aspect of the present application provides a pole piece scribing method, comprising:

[0117] S1. A rotatable backing roller 10 is provided, and a pole piece is laid on the backing roller 10, so that when the backing roller 10 rotates, the material belt on which the pole piece is located can be driven for conveyance.

[0118] S2. A scribing tool 21 is set to be embedded in the pole piece on the back roller 10, and the angle between the cutting direction of the scribing tool 21 at the contact point and the running direction of the pole piece is an obtuse angle.

[0119] S3. When the back roller 10 rotates to drive the pole piece to move, the scoring tool 21 scores the pole piece so that a score line is formed on the surface of the pole piece.

[0120] In step S2, the contact point refers to the contact point between the scribing tool 21 and the pole piece. In step S2, when the scribing tool 21 is embedded in the backing roller 10, the embedding depth of the scribing tool 21 can be adjusted to adjust the depth and width of the notch.

[0121] The pole piece scribing method provided in this embodiment can be executed by the pole piece scribing device in any of the above embodiments.

[0122] The waste generated during the process of the pole piece being cut by the scribing tool 21 is continuously cleaned by the first dust collection assembly 40 , the second dust collection assembly 50 and / or the brush dust removal assembly 60 .

[0123] The pole piece marking equipment and pole piece marking method provided in the embodiments of the present application can realize a safe, efficient and easy-to-control pole piece marking operation, which has the effects of wide adaptability and high economic adaptability.

[0124] The above are only preferred embodiments of the present application and are not intended to limit the present invention. Although the present application has been described in detail with reference to the examples, those skilled in the art can still modify the technical solutions recorded in the aforementioned examples or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A pole piece scribing device, characterized in that: include: A backing roller (10) and a marking mechanism (20); The back roller (10) is used to support the pole piece and provide a conveying driving force for the pole piece through its own rotation; The scribing mechanism (20) comprises: a scribing tool (21); The scribing tool (21) is arranged beside the backing roller (10), and the scribing tool (21) is embedded in the pole piece on the backing roller (10).

2. The pole piece scribing device according to claim 1, characterized in that: At the contact position between the scribing tool (21) and the pole piece, the cutting direction of the scribing tool (21) forms an angle α with the tape running direction of the pole piece.

3. The pole piece scribing device according to claim 2, characterized in that: The angle α is an obtuse angle.

4. The pole piece scribing device according to claim 1, characterized in that: Also includes: Main frame (30); The back roller (10) is rotatably arranged on the main frame (30); The scribing tool (21) is arranged on the main frame (30), and the scribing tool (21) is capable of moving toward or away from the backing roller (10).

5. The pole piece scribing device according to claim 4, characterized in that: The scribing mechanism (20) comprises: a tool support (22), a horizontal driving member (23) and a vertical driving member (24); The tool support (22) is arranged on the main frame (30), and the tool support (22) is movable in a vertical direction; The scribing tool (21) is arranged on the tool support (22), and the scribing tool (21) can move in a horizontal direction toward or away from the backing roller (10); The vertical driving member (24) is arranged on the main frame (30), and the output end of the vertical driving member (24) is connected to the tool support (22); The horizontal driving member (23) is arranged on the tool support (22), and the output end of the horizontal driving member (23) is connected to the scribing tool (21).

6. The pole piece scribing device according to claim 4, characterized in that: The marking mechanism (20) comprises: a plurality of fine-tuning components (26) and a fixed support (27); The fixed support (27) is connected to the main frame (30); The scribing tool (21) is arranged on the fixed support (27), and the scribing tool (21) is capable of moving along its own cutting direction; A plurality of fine-tuning components (26) are arranged on the fixed support (27) at intervals along the length direction of the scribing tool (21); The fine-tuning member (26) is used to push the scribing tool (21) to move.

7. The pole piece scribing device according to claim 4, characterized in that: Also includes a rotary drive member (28); The scribing tool (21) is rotatably arranged on the main frame (30); The rotary drive member (28) is connected to the scribing tool (21) and is used to drive the scribing tool (21) to rotate so as to adjust the cutting angle of the scribing tool (21) or to drive the scribing tool (21) to rotate.

8. The pole piece scribing device according to any one of claims 1 to 7, characterized in that: The length direction of the scribing tool (21) is parallel to the axial direction of the backing roller (10); The scribing tool (21) is provided with a plurality of saw teeth embedded in the pole piece.

9. The pole piece scribing device according to claim 8, characterized in that: The scribing mechanism (20) comprises: a tool support (22), The scribing tool (21) is arranged on the tool support (22), and the scribing tool (21) can move on the tool support (22) in a direction parallel to the axial direction of the back roller; The scribing mechanism (20) comprises a plurality of sliding drive members, corresponding to the plurality of scribing tools (21), wherein the plurality of sliding drive members are respectively connected to the plurality of scribing tools (21), and the plurality of sliding drive members are used to drive the plurality of scribing tools (21) to move in a direction parallel to the axial direction of the back roller, so that the saw teeth of the plurality of scribing tools (21) overlap or stagger with each other.

10. The pole piece scribing device according to any one of claims 4 to 7, characterized in that: The length direction of the scribing tool (21) is perpendicular to the axial direction of the backing roller (10); The scribing tool (21) comprises a plurality of; A plurality of scribing knives (21) are arranged in parallel and at intervals.

11. The pole piece scribing device according to claim 10, characterized in that: The plurality of scribing knives (21) are arranged on a knife shaft (25), and the spacing between the plurality of scribing knives (21) can be adjusted on the knife shaft (25).

12. The pole piece scribing device according to claim 1, characterized in that: Also includes: A first dust collection component (40); The scribing tool (21) is arranged on the side of the backing roller (10) in the horizontal direction; The first dust suction component (40) is arranged below the scribing tool (21).

13. The pole piece scribing device according to claim 1 or 12, characterized in that: Also includes: A second dust collecting assembly (50); The second dust suction component (50) faces the pole piece and is arranged downstream of the scribing tool (21) along the conveying direction of the pole piece.

14. The pole piece scribing device according to claim 1, characterized in that: Also includes: Brush dust removal assembly (60); The brush dust removal assembly (60) comprises: a brush roller (61); The brush roller (61) abuts against the pole piece and is arranged downstream of the scribing tool (21) along the conveying direction of the pole piece.

15. A pole piece scribing method, characterized in that: include: Providing a rotatable backing roller (10), and laying the pole piece on the backing roller (10); A scribing tool (21) is provided embedded in the pole piece on the back roller (10), and the included angle between the cutting direction of the scribing tool (21) at the contact point and the running direction of the pole piece is an obtuse angle; When the back roller (10) rotates to drive the pole piece to move, the scribing tool (21) scribes the pole piece so that a notch is formed on the surface of the pole piece.

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