Pole piece slitting device

Abstract

The utility model relates to the technical fields of pole piece slitting device, the utility model discloses a kind of pole piece slitting device, pole piece has multiple coating sections and multiple non-coating sections, pole piece slitting device includes: first slitting mechanism and second slitting mechanism, first slitting mechanism and second slitting mechanism are arranged apart along first direction, first slitting mechanism is used to correspond with non-coating section along second direction to slit non-coating section, second slitting mechanism is used to correspond with coating section along second direction to slit coating section, first direction and second direction are perpendicular. Thus, by setting first slitting mechanism and second slitting mechanism, first slitting mechanism is used to slit non-coating section, second slitting mechanism is used to slit coating section, first slitting mechanism and second slitting mechanism respectively meet the slitting quality requirement of non-coating section and coating section, reduce the risk that pole piece generates slitting continuously, sawtooth edge, burr and other problems, it is favorable to promote the product quality of pole piece.

Description

Technical Field

[0001] This utility model relates to the technical field of electrode slitting devices, and in particular to an electrode slitting device. Background Technology

[0002] In related technologies, the lithium battery production process includes a slitting process for cutting electrode sheets, which involves dividing wide electrode sheets into multiple electrode sheets. For intermittently coated electrode sheets, the electrode sheet has multiple coated sections and multiple uncoated sections. These multiple coated sections and multiple uncoated sections are arranged along the length of the electrode sheet. Any two adjacent coated sections are connected by an uncoated section. The coated sections include a current collector and an active material layer stacked together. The uncoated sections only have a current collector and no active material layer. The thickness of the coated sections is greater than the thickness of the uncoated sections.

[0003] In existing electrode slitting devices, two circular blades are used to roll and cut the electrode sheets during slitting. The two circular blades are located on both sides of the electrode sheet. In order to ensure the slitting quality, there will be a certain cutting depth and cutting depth between the two circular blades. The cutting depth and cutting depth of the two circular blades cannot simultaneously meet the slitting quality requirements of the coated section and the uncoated section. After the electrode sheets are slitting, problems such as unbroken slitting, serrated edges, and burrs are easily generated, which affects the quality of the electrode sheet products. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide an electrode slitting device that can meet the slitting quality requirements of both non-coated and coated sections, reduce the risk of problems such as incomplete slitting, serrated edges, and burrs on the electrode, and thus improve the product quality of the electrode.

[0005] According to an embodiment of the present invention, an electrode slitting device comprises an electrode having multiple coated sections and multiple uncoated sections, wherein the multiple coated sections are spaced apart sequentially along the length direction of the electrode, and any two adjacent coated sections are connected by an uncoated section. The electrode slitting device includes: A first cutting mechanism and a second cutting mechanism are arranged at intervals along a first direction. The first cutting mechanism is used to cut the uncoated section along a second direction, and the second cutting mechanism is used to cut the coated section along the second direction, with the first direction and the second direction being perpendicular.

[0006] According to the electrode slitting device of this utility model embodiment, by setting a first slitting mechanism and a second slitting mechanism, the first slitting mechanism is used to slitting the uncoated section and the second slitting mechanism is used to slitting the coated section. The first slitting mechanism and the second slitting mechanism respectively meet the slitting quality requirements of the uncoated section and the coated section, reducing the risk of electrode breakage, serrated edges, burrs and other problems, and helping to improve the product quality of the electrode.

[0007] In some examples of this utility model, the first slitting mechanism includes: a first slitting blade and a second slitting blade, the first slitting blade and the second slitting blade are arranged along the second direction, and the first slitting blade and the second slitting blade are staggered along the second direction. The first slitting blade and the second slitting blade can both rotate about a rotation axis extending along a third direction, so that the first slitting blade and the second slitting blade cooperate to slitting the corresponding uncoated section. The first direction, the second direction and the third direction are perpendicular to each other.

[0008] In some examples of this utility model, the first slitting blade includes: a first slitting blade body and a first slitting portion. The outer peripheral wall of the first slitting blade body is fixedly provided with the first slitting portion protruding from the outer peripheral wall of the first slitting blade body, so as to form a first avoidance notch for avoiding the coating section on the radially outer side of the first slitting blade body. The first avoidance notch extends circumferentially along the first slitting blade body and is adjacent to the first slitting portion. The first slitting portion and the second slitting blade cooperate to cut the corresponding non-coating section.

[0009] In some embodiments of this invention, the orthographic projection of the first cutting blade body along the third direction and the orthographic projection of the second slitting blade along the third direction are offset; and / or The first slitting section and the second slitting blade are adapted to be opposite to and spaced apart along the third direction, and at least one of the cutting depth of the first slitting section and the second slitting blade along the third direction and the cutting depth of the first slitting section and the second slitting blade along the second direction is adjustable.

[0010] In some examples of this invention, the first slitting mechanism includes a laser slitting device.

[0011] In some examples of this utility model, the second slitting mechanism includes a third slitting blade and a fourth slitting blade, the third slitting blade and the fourth slitting blade being arranged along the second direction and staggered along the second direction, the third slitting blade and the fourth slitting blade being rotatable about a rotation axis extending along a third direction, so that the third slitting blade and the third slitting blade cooperate to slit the corresponding coating section, the first direction, the second direction and the third direction being perpendicular to each other.

[0012] In some examples of this utility model, the third slitting blade includes: a second slitting blade body and a second slitting portion. The outer peripheral wall of the second slitting blade body is fixedly provided with the second slitting portion protruding from the outer peripheral wall of the second slitting blade body, so as to form a second avoidance notch on the radially outer side of the second slitting blade body for avoiding the non-coated section. The second avoidance notch extends circumferentially along the second slitting blade body and is adjacent to the second slitting portion. The second slitting portion and the fourth slitting blade cooperate to slit the corresponding coated section.

[0013] In some embodiments of this invention, the orthographic projection of the second cutter body along the third direction and the orthographic projection of the fourth slitting blade along the third direction are offset; and / or The second slitting section and the fourth slitting blade are adapted to be opposite to and spaced apart along the third direction, and at least one of the cutting depth of the second slitting section and the fourth slitting blade along the third direction and the cutting depth of the second slitting section and the fourth slitting blade along the second direction is adjustable.

[0014] In some examples of this utility model, the electrode slitting device further includes: a detection mechanism and a control unit. The detection mechanism is located upstream of the first slitting mechanism and the second slitting mechanism. The control unit is communicatively connected to the detection mechanism, the first slitting mechanism, and the second slitting mechanism. The detection mechanism is used to detect the positions of the coated section and the uncoated section. The control unit is configured to enable the first slitting mechanism and the second slitting mechanism to operate based on the detection information from the detection mechanism.

[0015] In some examples of this invention, the detection mechanism is a color mark sensor.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a top view of the electrode cutting device according to an embodiment of the present utility model when cutting electrode sheets; Figure 2 This is a side view of the electrode cutting device according to an embodiment of the present utility model when cutting electrode sheets; Figure 3 This is a side view of the first and second slitting blades according to an embodiment of the present utility model; Figure 4 yes Figure 3Sectional view at point AA; Figure 5 yes Figure 4 Enlarged view at point B in the middle; Figure 6 This is a side view of the third and fourth slitting blades according to an embodiment of the present utility model; Figure 7 yes Figure 6 Sectional view at CC; Figure 8 yes Figure 7 Enlarged view at point D; Figure 9 This is a side view of the first slitting blade according to an embodiment of the present utility model; Figure 10 This is a side view of the third slitting blade according to an embodiment of the present utility model; Figure 11 This is a side view of the laser slitting device and the second slitting mechanism cutting electrode sheets according to an embodiment of the present invention; Figure 12 This is a top view of the electrode sheet according to an embodiment of the present utility model; Figure 13 This is a cross-sectional view of the electrode sheet according to an embodiment of the present utility model.

[0018] Figure label: Electrode slitting device 100; First slitting mechanism 10; First slitting blade 11; First slitting blade body 111; First slitting section 112; First clearance notch 113; Second slitting blade 12; First depth of cut a; First cutting distance b; Laser slitting device 13; First tool axis 14; Second tool axis 15; Second slitting mechanism 20; Third cutting blade 21; Second cutting blade body 211; Second cutting section 212; Second clearance notch 213; Fourth cutting blade 22; Second cutting depth e; Second cutting distance f; Third cutter axis 23; Fourth cutter axis 24; 30 testing institutions; Electrode 200; Coated section 201; Uncoated section 202. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] The following is for reference. Figures 1-13 The electrode slitting device 100 according to an embodiment of the present invention is described. The electrode slitting device 100 is used to slitting electrode sheets 200.

[0021] like Figures 1-13 As shown, according to an embodiment of the present invention, the electrode slitting device 100 has multiple coated sections 201 and multiple uncoated sections 202. The multiple coated sections 201 are spaced apart sequentially along the length direction of the electrode 200, and any two adjacent coated sections 201 are connected by an uncoated section 202. The electrode slitting device 100 includes: a first slitting mechanism 10 and a second slitting mechanism 20. The first slitting mechanism 10 and the second slitting mechanism 20 are arranged spaced apart along a first direction. The first slitting mechanism 10 is used to slit the uncoated sections 202 in a second direction, and the second slitting mechanism 20 is used to slit the coated sections 201 in a second direction, and the first direction and the second direction are perpendicular.

[0022] The electrode slitting device 100 includes: a first slitting mechanism 10 and a second slitting mechanism 20, wherein the first direction is... Figure 2 The X direction in the middle, the second direction is Figure 2 In the Z direction, as an example, both the first slitting mechanism 10 and the second slitting mechanism 20 are slitting blade mechanisms, thereby slitting the electrode 200 during its travel. As another example, the first slitting mechanism 10 is a laser slitting device 13, and the second slitting mechanism 20 is a slitting blade mechanism, thereby slitting the electrode 200 during its travel. When the electrode slitting device 100 slits the electrode 200, when the first slitting mechanism 10 is opposite to the coating section 201 along the second direction, the first slitting mechanism 10 does not slit the coating section 201. When the second slitting mechanism 20 is opposite to the uncoated section 202 along the second direction, the second slitting mechanism 20 does not slit the uncoated section 202. The first slitting mechanism 10 only slits the uncoated section 202, and the second slitting mechanism 20 only slits the coating section 201.

[0023] The electrode slitting device 100 of this application is used to slit the electrode 200. The first slitting mechanism 10 is used to slit the uncoated section 202, and the second slitting mechanism 20 is used to slit the coated section 201. The first slitting mechanism 10 and the second slitting mechanism 20 respectively meet the slitting requirements of the uncoated section 202 and the coated section 201, reducing the risk of problems such as broken slitting, serrated edges, and burrs in the electrode 200, and helping to improve the product quality of the electrode 200.

[0024] In some examples of this utility model, such as Figures 2-5 As shown, the first slitting mechanism 10 includes a first slitting blade 11 and a second slitting blade 12. The first slitting blade 11 and the second slitting blade 12 are arranged along a second direction and are staggered along the second direction. Both the first slitting blade 11 and the second slitting blade 12 can rotate about a rotation axis extending along a third direction, so that the first slitting blade 11 and the second slitting blade 12 cooperate to slit the corresponding uncoated sections 202. The first direction, the second direction and the third direction are perpendicular to each other.

[0025] The first slitting mechanism 10 may further include: a first cutter shaft 14, a first drive motor, a second cutter shaft 15, and a second drive motor, with the third direction being... Figure 2 The middle direction is perpendicular to the paper plane, and the third direction is... Figure 4 In the Y direction. A first cutter shaft 14 and a second cutter shaft 15 are arranged opposite each other along the second direction. A first slitting blade 11 is sleeved on and fixed to the first cutter shaft 14, and a second slitting blade 12 is sleeved on and fixed to the second cutter shaft 15. A first drive motor is driven by the first cutter shaft 14 to drive the first cutter shaft 14 to synchronously rotate the first slitting blade 11. A second drive motor is driven by the second cutter shaft 15 to drive the second cutter shaft 15 to synchronously rotate the second slitting blade 12. When the first slitting blade 11 and the second slitting blade 12 rotate, they engage to slit the non-coated section 202. By setting the first slitting blade 11 and the second slitting blade 12, as... Figure 5 As shown, the cutting depth (i.e., first cutting depth a) and the cutting depth (i.e., first cutting depth b) of the first slitting blade 11 and the second slitting blade 12 can meet the slitting requirements of the uncoated section 202, which is conducive to improving the slitting quality of the uncoated section 202, further reducing the risk of problems such as non-continuous slitting, serrated edges, and burrs in the electrode 200, and is more conducive to improving the product quality of the electrode 200.

[0026] In some examples of this utility model, such as Figure 2 and Figure 3As shown, the first slitting blade 11 includes: a first slitting blade body 111 and a first slitting portion 112. The outer peripheral wall of the first slitting blade body 111 is fixedly provided with the first slitting portion 112 protruding from the outer peripheral wall of the first slitting blade body 111, so as to form a first avoidance notch 113 for avoiding the coating section 201 on the radially outer side of the first slitting blade body 111. The first avoidance notch 113 extends circumferentially along the first slitting blade body 111 and is adjacent to the first slitting portion 112. The first slitting portion 112 and the second slitting blade 12 cooperate to cut the corresponding non-coating section 202.

[0027] The first cutting blade body 111 and the first slitting section 112 are integrally formed. The first cutting blade body 111 is circular and sleeved on the first cutting shaft 14. The first slitting section 112 is located on the side of the first cutting blade body 111 away from the first cutting shaft 14. The first slitting section 112 is arc-shaped and extends circumferentially along the first cutting blade body 111. The arc length of the first slitting section 112 along the circumference of the first slitting blade 11 is equal to the length of the uncoated section 202 along the length of the electrode 200. The arc length of the first clearance notch 113 along the circumference of the first slitting blade 11 is equal to the length of the coated section 201 along the length of the electrode 200. The outer peripheral wall of the first cutting blade body 111 and the two side walls of the first slitting section 112 along the circumference of the first slitting blade 11 together define the first clearance notch 113.

[0028] It should be noted that the second slitting blade 12 has a circular structure. When the first slitting blade 11 and the second slitting blade 12 rotate to slit the electrode sheet 200, the first slitting part 112 and the second slitting blade 12 engage to roll-cut the non-coated section 202. When the coated section 201 moves to the position of the first slitting mechanism 10, the first clearance notch 113 is opposite to the coated section 201, causing the first slitting blade 11 to avoid the coated section 201. The first clearance notch 113 cannot engage with the second slitting blade 12, so the first slitting mechanism 10 cannot slit the coated section 201 of the electrode sheet 200, thus achieving the effect of the first slitting mechanism 10 avoiding the coated section 201.

[0029] In some examples of this utility model, such as Figures 3-5 As shown, the orthographic projection of the first cutter body 111 along a third direction and the orthographic projection of the second slitting cutter 12 along a third direction are offset; and / or the first slitting portion 112 and the second slitting cutter 12 are adapted to be opposite to and spaced apart along a third direction, and at least one of the cutting depth (i.e., the first cutting depth a) of the first slitting portion 112 and the second slitting cutter 12 along a third direction and the cutting depth (i.e., the first cutting depth b) of the first slitting portion 112 and the second slitting cutter 12 along a second direction is adjustable.

[0030] Among them, such as Figure 3As shown, along a third direction, the orthographic projection of the first cutting blade body 111 and the orthographic projection of the second slitting blade 12 do not coincide, and the orthographic projections of the first cutting blade body 111 and the second slitting blade 12 can be spaced apart. When the first slitting blade 11 rotates, the first slitting portion 112 and the second slitting blade 12 can be opposite to each other and spaced apart along a third direction. The distance between the first slitting portion 112 and the second slitting blade 12 along a third direction is the cutting depth (i.e., the first cutting depth a). At least one of the first cutting depth a and the first cutting depth b is adjustable. As an example, the orthographic projections of the first cutting blade body 111 and the second slitting blade 12 along a third direction are offset. As another example, at least one of the first cutting depth a and the first cutting depth b is adjustable. As yet another example, the orthographic projections of the first cutting blade body 111 and the second slitting blade 12 along a third direction are offset, and at least one of the first cutting depth a and the first cutting depth b is adjustable.

[0031] For example, by driving the first cutter shaft 14 and the second cutter shaft 15 to move along a third direction, the first cutter shaft 14 and the second cutter shaft 15 respectively drive the first slitting blade 11 and the second slitting blade 12 to move synchronously, thereby achieving the effect of adjusting the first cutting depth 'a'. By driving the first cutter shaft 14 and the second cutter shaft 15 to move along a second direction, the first cutter shaft 14 and the second cutter shaft 15 respectively drive the first slitting blade 11 and the second slitting blade 12 to move synchronously, thereby achieving the effect of adjusting the first cutting depth 'b'. The driving structure for driving the first cutter shaft 14 and the second cutter shaft 15 (the driving structure can be a telescopic cylinder, etc.) is not specifically limited in this application, as long as it can drive the first cutter shaft 14 and the second cutter shaft 15 to move.

[0032] By staggering the orthographic projection of the first cutting blade body 111 along a third direction and the orthographic projection of the second cutting blade 12 along a third direction, it is beneficial for the first avoidance notch 113 to avoid the coating section 201, and for preventing the first avoidance notch 113 from engaging with the second cutting blade 12. This facilitates the first cutting mechanism 10's avoidance effect on the coating section 201. Adjusting at least one of the first cutting depth a and the first cutting distance b allows the first cutting mechanism 10 to adapt to the thickness of the uncoated section 202 and the dimensions of the uncoated section 202 along the length of the electrode 200, thus ensuring the cutting quality of the uncoated section 202. Furthermore, the first cutting mechanism 10 can meet the cutting requirements of uncoated sections 202 of different sizes and the cutting of electrodes 200 of different specifications, improving the versatility of the first cutting mechanism 10 and the electrode cutting device 100.

[0033] In some examples of this utility model, such as Figure 11 As shown, the first slitting mechanism 10 includes a laser slitter 13.

[0034] The laser slitter 13 cuts the uncoated section 202 and avoids the coated section 201 of the electrode 200. The laser slitter 13 emits a laser beam to cut the uncoated section 202. During the electrode 200's conveyor belt operation, the laser slitter 13 cuts the thinner uncoated section 202, improving the cutting quality and further reducing the risk of problems such as incomplete cutting, jagged edges, and burrs on the electrode 200, thus enhancing the overall product quality of the electrode 200.

[0035] In some examples of this utility model, such as Figure 2 , Figure 6 and Figure 7 As shown, the second slitting mechanism 20 includes a third slitting blade 21 and a fourth slitting blade 22. The third slitting blade 21 and the fourth slitting blade 22 are arranged along the second direction and are staggered along the second direction. Both the third slitting blade 21 and the fourth slitting blade 22 can rotate about a rotation axis extending along a third direction, so that the third slitting blade 21 cooperates to slit the corresponding coating section 201. The first direction, the second direction and the third direction are perpendicular to each other.

[0036] The second slitting mechanism 20 may further include: a third cutter shaft 23, a third drive motor, a fourth cutter shaft 24, and a fourth drive motor. The first cutter shaft 14 and the second cutter shaft 15 are arranged opposite each other along a second direction. The third slitting blade 21 is sleeved on and fixed to the third cutter shaft 23, and the fourth slitting blade 22 is sleeved on and fixed to the fourth cutter shaft 24. The third drive motor is driven by the third cutter shaft 23 to drive the third cutter shaft 23 to synchronously rotate the third slitting blade 21. The fourth drive motor is driven by the fourth cutter shaft 24 to drive the fourth cutter shaft 24 to synchronously rotate the fourth slitting blade 22. When the third slitting blade 21 and the fourth slitting blade 22 rotate, they engage to slitting the coating section 201. By setting the third slitting blade 21 and the fourth slitting blade 22, as... Figure 8 As shown, the cutting depth (i.e., the second cutting depth e) and the cutting distance (i.e., the second cutting distance f) of the third slitting blade 21 and the fourth slitting blade 22 can meet the slitting requirements of the coating section 201, which is conducive to improving the slitting quality of the coating section 201, further reducing the risk of problems such as non-continuous slitting, serrated edges, and burrs in the electrode 200, and is more conducive to improving the product quality of the electrode 200.

[0037] In some examples of this utility model, such as Figure 2 and Figure 6As shown, the third slitting blade 21 includes: a second slitting blade body 211 and a second slitting portion 212. The outer peripheral wall of the second slitting blade body 211 is fixedly provided with a second slitting portion 212 protruding from the outer peripheral wall of the second slitting blade body 211, so as to form a second avoidance notch 213 for avoiding the non-coated section 202 on the radially outer side of the second slitting blade body 211. The second avoidance notch 213 extends circumferentially along the second slitting blade body 211 and is adjacent to the second slitting portion 212. The second slitting portion 212 and the fourth slitting blade 22 cooperate to cut the corresponding coated section 201.

[0038] The second cutter body 211 and the second slitting part 212 are integrally formed. The second cutter body 211 is circular and sleeved on the third cutter shaft 23. The second slitting part 212 is located on the side of the second cutter body 211 away from the third cutter shaft 23. The second slitting part 212 is arc-shaped and extends circumferentially along the second cutter body 211. The arc length of the second slitting part 212 along the circumferential direction of the third slitting blade 21 is equal to the length of the coating section 201 along the length direction of the electrode 200. The arc length of the second clearance notch 213 along the circumferential direction of the third slitting blade 21 is equal to the length of the uncoated section 202 along the length direction of the electrode 200. The outer peripheral wall of the second cutter body 211 and the two side walls of the second slitting part 212 along the circumferential direction of the third slitting blade 21 together define the second clearance notch 213.

[0039] It should be noted that the fourth slitting blade 22 has a circular structure. When the third slitting blade 21 and the fourth slitting blade 22 rotate to slit the electrode sheet 200, the second slitting part 212 and the fourth slitting blade 22 engage to roll-cut the coated section 201. When the uncoated section 202 moves to the position of the second slitting mechanism 20, the second clearance notch 213 is opposite to the uncoated section 202, causing the third slitting blade 21 to avoid the uncoated section 202. The second clearance notch 213 cannot engage with the fourth slitting blade 22, so the second slitting mechanism 20 cannot slit the uncoated section 202 of the electrode sheet 200, thus achieving the effect of the second slitting mechanism 20 avoiding the uncoated section 202.

[0040] In some examples of this utility model, such as Figure 2 , Figures 6-8 As shown, the orthographic projection of the second cutter body 211 along a third direction and the orthographic projection of the fourth slitting cutter 22 along a third direction are offset; and / or the second slitting portion 212 and the fourth slitting cutter 22 are adapted to be opposite to and spaced apart along a third direction, and at least one of the cutting depth of the second slitting portion 212 and the cutting depth of the fourth slitting cutter 22 along a third direction and the cutting depth of the second slitting portion 212 and the fourth slitting cutter 22 along a second direction is adjustable.

[0041] In this configuration, along a third direction, the orthographic projection of the second cutting blade body 211 and the orthographic projection of the fourth slitting blade 22 do not coincide, and they can be spaced apart. When the third slitting blade 21 rotates, the second slitting portion 212 and the fourth slitting blade 22 can be opposite each other and spaced apart along a third direction. The distance between the second slitting portion 212 and the fourth slitting blade 22 along a third direction is the cutting depth (i.e., the second cutting depth e). At least one of the second cutting depth e and the second cutting depth f is adjustable. As an example, the orthographic projections of the second cutting blade body 211 and the fourth slitting blade 22 along a third direction are offset. As another example, at least one of the second cutting depth e and the second cutting depth f is adjustable. As yet another example, the orthographic projections of the second cutting blade body 211 and the fourth slitting blade 22 along a third direction are offset, and at least one of the second cutting depth e and the second cutting depth f is adjustable.

[0042] For example, by driving the third cutter shaft 23 and the fourth cutter shaft 24 to move along a third direction, the third cutter shaft 23 and the fourth cutter shaft 24 respectively drive the third slitting blade 21 and the fourth slitting blade 22 to move synchronously, thereby achieving the effect of adjusting the second cutting depth e. By driving the third cutter shaft 23 and the fourth cutter shaft 24 to move along a second direction, the third cutter shaft 23 and the fourth cutter shaft 24 respectively drive the third slitting blade 21 and the fourth slitting blade 22 to move synchronously, thereby achieving the effect of adjusting the second cutting depth f. The driving structure for driving the third cutter shaft 23 and the fourth cutter shaft 24 (the driving structure can be a telescopic cylinder, etc.) is not specifically limited in this application, as long as it can drive the third cutter shaft 23 and the fourth cutter shaft 24 to move.

[0043] By staggering the orthographic projections of the second cutting blade body 211 along a third direction and the fourth slitting blade 22 along a third direction, the second clearance notch 213 can avoid the uncoated section 202, preventing the second clearance notch 213 from engaging with the fourth slitting blade 22. This facilitates the second slitting mechanism 20's ability to avoid the uncoated section 202. Adjusting at least one of the second cutting depth e and the second cutting distance f allows the second slitting mechanism 20 to adapt to the thickness of the coated section 201 and the length of the coated section 201 along the electrode 200, ensuring the slitting quality of the coated section 201. Furthermore, the second slitting mechanism 20 can meet the slitting requirements of coated sections 201 of different sizes and electrode 200 of different specifications, improving the versatility of the second slitting mechanism 20 and the electrode slitting device 100.

[0044] In some examples of this utility model, such as Figure 2 and Figure 11As shown, the electrode slitting device 100 also includes a detection mechanism 30 and a control unit (not shown in the figure). The detection mechanism 30 is located upstream of the first slitting mechanism 10 and the second slitting mechanism 20. The control unit is communicatively connected to the detection mechanism 30, the first slitting mechanism 10 and the second slitting mechanism 20. The detection mechanism 30 is used to detect the position of the coated section 201 and the uncoated section 202. The control unit is configured to make the first slitting mechanism 10 and the second slitting mechanism 20 work according to the detection information of the detection mechanism 30.

[0045] Along the belt-carrying direction of the electrode 200, the detection mechanism 30 is located upstream of the two slitting mechanisms. The control unit can communicate with the detection mechanism 30, the first slitting mechanism 10, and the second slitting mechanism 20 via wired or wireless means. The detection mechanism 30 can be a sensor. When the detection mechanism 30 is working, it can detect the position of the coated section 201 and the uncoated section 202 of the electrode 200. When the detection mechanism 30 identifies the coated section 201 or the uncoated section 202, the control unit controls the first drive motor, the second drive motor, the third drive motor, and the fourth drive motor to start, so that the first slitting mechanism 10 and the second slitting mechanism 200 respectively slit the uncoated section 202 and the coated section 201.

[0046] In some examples of this utility model, the detection mechanism 30 is a color mark sensor.

[0047] Among them, the color mark sensor is a photoelectric sensor used to detect color marks or color differences on the surface of an object. It is widely used in industrial automation, and its core function is to achieve precise positioning and control through color recognition. The colors of the coated section 201 and the uncoated section 202 of the electrode 200 can be set to different colors. When the electrode 200 is being conveyed, the color mark sensor detects the color on the surface of the electrode 200, and can detect the positions of the coated section 201 and the uncoated section 202. The color mark sensor has strong anti-interference capabilities and can detect minute color differences, thus improving the position detection accuracy of the coated section 201 and the uncoated section 202. Furthermore, the color mark sensor has a fast response time, which can meet the detection requirements during the conveying process of the electrode 200.

[0048] Other components of the electrode slitting device 100 according to the embodiments of the present invention, such as the drive structure for driving the blade shaft to rotate, are known to those skilled in the art and will not be described in detail here.

[0049] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An electrode slitting device, characterized in that, The electrode has multiple coated sections and multiple uncoated sections, the coated sections are spaced apart sequentially along the length of the electrode, and any two adjacent coated sections are connected by an uncoated section. The electrode slitting device includes: A first cutting mechanism and a second cutting mechanism are arranged at intervals along a first direction. The first cutting mechanism is used to cut the uncoated section along a second direction, and the second cutting mechanism is used to cut the coated section along the second direction, with the first direction and the second direction being perpendicular.

2. The electrode slitting device according to claim 1, characterized in that, The first slitting mechanism includes a first slitting blade and a second slitting blade. The first slitting blade and the second slitting blade are arranged along the second direction and are staggered along the second direction. Both the first slitting blade and the second slitting blade can rotate about a rotation axis extending along a third direction, so that the first slitting blade and the second slitting blade cooperate to slitting the corresponding uncoated sections. The first direction, the second direction and the third direction are perpendicular to each other.

3. The electrode slitting device according to claim 2, characterized in that, The first slitting blade includes: a first slitting blade body and a first slitting portion. The first slitting portion protrudes from the outer peripheral wall of the first slitting blade body to form a first avoidance notch on the radially outer side of the first slitting blade body for avoiding the coating section. The first avoidance notch extends circumferentially along the first slitting blade body and is adjacent to the first slitting portion. The first slitting portion and the second slitting blade cooperate to slit the corresponding non-coating section.

4. The electrode slitting device according to claim 3, characterized in that, The orthographic projection of the first cutting blade body along the third direction and the orthographic projection of the second cutting blade along the third direction are offset; and / or The first slitting section and the second slitting blade are adapted to be opposite to and spaced apart along the third direction, and at least one of the cutting depth of the first slitting section and the second slitting blade along the third direction and the cutting depth of the first slitting section and the second slitting blade along the second direction is adjustable.

5. The electrode slitting device according to claim 1, characterized in that, The first slitting mechanism includes a laser slitting device.

6. The electrode slitting device according to claim 1, characterized in that, The second slitting mechanism includes a third slitting blade and a fourth slitting blade, which are arranged along the second direction and staggered along the second direction. Both the third and fourth slitting blades can rotate about a rotation axis extending along a third direction, so that the third slitting blades cooperate to slit the corresponding coating sections. The first direction, the second direction, and the third direction are perpendicular to each other.

7. The electrode slitting device according to claim 6, characterized in that, The third slitting blade includes: a second slitting blade body and a second slitting portion. The outer peripheral wall of the second slitting blade body is fixedly provided with the second slitting portion protruding from the outer peripheral wall of the second slitting blade body, so as to form a second avoidance notch on the radially outer side of the second slitting blade body for avoiding the non-coated section. The second avoidance notch extends circumferentially along the second slitting blade body and is adjacent to the second slitting portion. The second slitting portion and the fourth slitting blade cooperate to cut the corresponding coated section.

8. The electrode slitting device according to claim 7, characterized in that, The orthographic projection of the second cutter body along the third direction and the orthographic projection of the fourth slitting cutter along the third direction are offset; and / or The second slitting section and the fourth slitting blade are adapted to be opposite to and spaced apart along the third direction, and at least one of the cutting depth of the second slitting section and the fourth slitting blade along the third direction and the cutting depth of the second slitting section and the fourth slitting blade along the second direction is adjustable.

9. The electrode slitting apparatus according to any one of claims 1-8, characterized in that, The electrode slitting device further includes a detection mechanism and a control unit. The detection mechanism is located upstream of the first slitting mechanism and the second slitting mechanism. The control unit is communicatively connected to the detection mechanism, the first slitting mechanism, and the second slitting mechanism. The detection mechanism is used to detect the positions of the coated section and the uncoated section. The control unit is configured to enable the first slitting mechanism and the second slitting mechanism to operate based on the detection information from the detection mechanism.

10. The electrode slitting device according to claim 9, characterized in that, The detection mechanism is a color mark sensor.

Images