Pole piece slitting equipment

Abstract

The utility model provides a pole piece slitting equipment, the pole piece slitting equipment comprises a casing, and an unreeling mechanism, a slitting mechanism and a reeling assembly which are arranged on the casing, the unreeling mechanism comprises an unreeling shaft arranged at the front end of the casing, the slitting mechanism is provided with an input end, an output end and a cutting part arranged between the input end and the output end, and the reeling assembly is arranged on the casing. The winding assembly comprises a first winding mechanism and a second winding mechanism, the first winding mechanism comprises a tab cutting structure and a first winding shaft, the first winding shaft is arranged at the downstream of the tab cutting structure in the pole piece conveying direction, and a pole piece is slit by the slitting mechanism to form at least two pole piece units; each pole piece unit is a first pole piece unit or a second pole piece unit, and the output end of the slitting mechanism is selectively matched with the first winding mechanism and / or the second winding mechanism to output the pole piece units. The pole piece slitting equipment can solve the problems that in the prior art, die cutting equipment is prone to causing material scrapping, production efficiency is low, and production cost is increased.

Description

Technical Field

[0001] This utility model relates to the field of battery-related technology, and more specifically, to an electrode slitting device. Background Technology

[0002] The battery electrode cutting process typically includes electrode die-cutting and electrode slitting. Electrode slitting equipment generally includes an unwinding device, a slitting device, and a winding device. The unwinding device transports the electrode roll to the slitting device, which slits the electrode. The slit electrode is then transported to the winding device for winding, thus completing the electrode slitting process. In the field of new energy battery manufacturing, especially in the production of rechargeable batteries, the processing of electrodes (positive and negative electrodes) is a crucial step. The electrode die-cutting process mainly employs two methods: metal tool die-cutting or laser cutting. Precise die-cutting cuts the electrode to specific dimensions according to design requirements, simultaneously cutting the tabs, which is fundamental to ensuring battery performance and safety.

[0003] Currently, the existing electrode cutting process typically involves first die-cutting the empty foil area of ​​the electrode to form tabs, followed by secondary slitting of the electrode (i.e., electrode slitting). However, this sequence has revealed some problems in actual production. For example, when the empty foil area is severely damaged (e.g., wrinkles), direct die-cutting may result in incomplete cutting, affecting subsequent slitting steps. Furthermore, the instability of the empty foil area during electrode traction can lead to frequent tape breakage, resulting in material scrap and reduced production efficiency. In addition, handling abnormal tabs consumes significant time and resources, increasing production costs.

[0004] As can be seen from the above, the existing electrode cutting equipment has the problem of easy material scrapping, low production efficiency, and increased production costs. Utility Model Content

[0005] The main purpose of this invention is to provide an electrode slitting device to solve the problems of low production efficiency and increased production costs caused by the easy generation of material scrap and the existing die-cutting equipment.

[0006] To achieve the above objectives, according to one aspect of the present invention, an electrode slitting device is provided. The electrode slitting device includes a housing, an unwinding mechanism, a slitting mechanism, and a winding assembly. The unwinding mechanism, slitting mechanism, and winding assembly are disposed on the housing. The unwinding mechanism includes an unwinding shaft disposed at the front end of the housing. The slitting mechanism has an input end, an output end, and a cutting portion disposed between the input end and the output end. The winding assembly includes a first winding mechanism and a second winding mechanism. The first winding mechanism includes an electrode tab cutting structure and a first winding shaft. Along the electrode transport direction... A take-up shaft is located downstream of the tab cutting structure. After the electrode sheet is cut by the slitting mechanism, it forms at least two electrode sheet units. Each electrode sheet unit is either a first electrode sheet unit or a second electrode sheet unit. The first electrode sheet unit is a qualified product, and the second electrode sheet unit is a defective product. The second take-up mechanism includes a second take-up shaft. The output end of the slitting mechanism can be selectively used in conjunction with the first take-up mechanism and / or the second take-up mechanism to output electrode sheet units. The first take-up mechanism is used to cut the tabs of the first electrode sheet unit and take it up. The second take-up mechanism is used to take up the second electrode sheet unit.

[0007] Furthermore, both the first and second winding mechanisms are provided with multiple output ports, and the output end of the slitting mechanism has multiple output ports arranged along the width direction of the electrode sheet, with each output port corresponding to either the first or second winding mechanism.

[0008] Furthermore, the first winding mechanism also includes a first transport component, the input end of which is connected to the output end of the slitting mechanism, and the first winding shaft is located at the end of the first transport component away from the slitting mechanism. The tab cutting structure cuts the first electrode unit on the first transport component to form a tab.

[0009] Furthermore, the electrode cutting structure includes a housing and multiple laser cutting components. The first electrode unit on the first transport component passes through the housing, and the multiple laser cutting components are disposed inside the housing and on the upper side of the first transport component. The multiple laser cutting components are spaced apart along the transport direction of the first electrode unit.

[0010] Furthermore, the second winding mechanism also includes a second transport component, the input end of which is connected to the output end of the slitting mechanism, and the second winding shaft is located at the end of the second transport component away from the slitting mechanism.

[0011] Furthermore, the electrode slitting equipment also includes multiple correction mechanisms disposed on the machine housing, one of which is disposed between the unwinding mechanism and the slitting mechanism, and the other of which is disposed between the slitting mechanism and the first take-up shaft.

[0012] Furthermore, the correction mechanism includes a correction roller, which is rotatably mounted on the housing. Correction rollers are provided on both sides of the electrode along the width direction of the electrode, and the correction rollers are rotatably connected to the electrode.

[0013] Furthermore, the slitting mechanism includes a housing and a drive unit. The housing is mounted on the machine housing and has an input end and an output end. The housing includes a top plate and a bottom plate mounted on both sides of the electrode sheet along the height direction of the housing. The drive unit is mounted on the housing, and the cutting part is located inside the housing. The cutting part includes a blade holder and a circular slitting blade rotatably mounted on the blade holder. The blade holder is slidably mounted on the top plate along the width direction of the electrode sheet. The drive unit is driven to connect with the slitting blade to provide driving force for the rotation of the slitting blade. The bottom plate has a limiting groove on the side facing the top plate, and the bottom of the slitting blade passes through the electrode sheet and extends into the interior of the limiting groove.

[0014] Furthermore, the electrode slitting equipment also includes multiple traction rollers mounted on the machine housing, and traction rollers are provided between the unwinding mechanism and the slitting mechanism, between the slitting mechanism and the first take-up shaft, and between the slitting mechanism and the second take-up shaft.

[0015] Furthermore, the electrode slitting equipment also includes a pressure roller mounted on the machine housing, which is positioned between the unwinding mechanism and the slitting mechanism.

[0016] According to the technical solution of this utility model, the electrode slitting equipment includes a housing, an unwinding mechanism, a slitting mechanism, and a winding assembly. The unwinding mechanism, slitting mechanism, and winding assembly are mounted on the housing. The unwinding mechanism includes an unwinding shaft located at the front end of the housing. The slitting mechanism has an input end, an output end, and a cutting section located between the input end and the output end. The winding assembly includes a first winding mechanism and a second winding mechanism. The first winding mechanism includes an electrode tab cutting structure and a first winding shaft. The first winding shaft is located downstream of the electrode tab cutting structure along the electrode transport direction. After the electrode is slitted by the slitting mechanism, at least two electrode units are formed. Each electrode unit is either a first electrode unit or a second electrode unit. The first electrode unit is a qualified product, and the second electrode unit is a defective product. The second winding mechanism includes a second winding shaft. The output end of the slitting mechanism can selectively cooperate with the first winding mechanism and / or the second winding mechanism to output electrode units. The first winding mechanism is used to cut the electrode tabs of the first electrode unit and to wind it up. The second winding mechanism is used to wind up the second electrode unit.

[0017] As can be seen from the above, the electrode slitting equipment of this application adopts a slitting mechanism located upstream of the first winding mechanism and the second winding mechanism, so that after the electrode is first slitting by the slitting mechanism, the electrode tab cutting structure of the first winding mechanism further cuts the slitting first electrode unit to form an electrode tab, thus completing the secondary cutting. This overcomes the problem of efficiency issues such as tape breakage caused by cutting to form an electrode tab before slitting the electrode in the prior art. The structural setting of this application optimizes the electrode cutting structure and improves the production efficiency of electrode cutting.

[0018] This application employs a replaceable first and second winding mechanism to wind up the first and second electrode units after they have been cut by the slitting mechanism. This allows the qualified first electrode units to be wound up by the first winding mechanism to form corresponding electrode tabs, while unqualified second electrode units can be recycled through the second winding mechanism. The configuration of the first and second winding mechanisms in this application provides a choice for the winding direction of the electrode units, thereby avoiding the need to cut electrode tabs on unqualified second electrode units, preventing material waste, simplifying the operation process, and improving efficiency. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0020] Figure 1 This is a schematic diagram of the electrode slitting equipment provided in this application;

[0021] Figure 2 This is a schematic diagram of the electrode cutting structure provided in this application.

[0022] The above figures include the following reference numerals:

[0023] 10. Unwinding mechanism; 110. Unwinding shaft; 20. Traction roller; 30. Pressure roller; 40. Correction mechanism; 50. Slitting mechanism; 510. Slitting knife; 60. First winding mechanism; 610. Electrode cutting structure; 620. First winding shaft; 70. Second winding mechanism; 710. Second winding shaft; 80. Electrode sheet. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0026] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0027] To address the problems of low production efficiency and increased production costs caused by material scrapping in existing electrode cutting equipment, this application provides an electrode slitting device for cutting electrode sheets to form electrode sheets suitable for forming battery cell sizes.

[0028] The electrode slitting equipment performs the first cutting of the electrode sheets, and then the slitting electrode sheets are cut into tabs to achieve the second cutting, thereby obtaining the electrode sheets used to form the battery cell.

[0029] like Figures 1 to 2 As shown, the electrode slitting equipment includes a housing, an unwinding mechanism 10, a slitting mechanism 50, and a winding assembly. The unwinding mechanism 10, the slitting mechanism 50, and the winding assembly are mounted on the housing. The unwinding mechanism 10 includes an unwinding shaft 110 located at the front end of the housing. The slitting mechanism 50 has an input end, an output end, and a cutting section located between the input end and the output end. The winding assembly includes a first winding mechanism 60 and a second winding mechanism 70. The first winding mechanism 60 includes an electrode tab cutting structure 610 and a first winding shaft 620. The first winding shaft 620 is located downstream of the electrode tab cutting structure 610 along the electrode sheet 80 transport direction. The second winding mechanism 70 is located below the first winding mechanism 60.

[0030] After being slit by the slitting mechanism 50, the electrode 80 is divided into at least two electrode units. Each electrode unit is either a first electrode unit or a second electrode unit. The first electrode unit is a qualified product, and the second electrode unit is a defective product. The second winding mechanism 70 includes a second winding shaft 710. The output end of the slitting mechanism 50 can be selectively used in conjunction with the first winding mechanism 60 and / or the second winding mechanism 70 to output electrode units. The first winding mechanism 60 is used to cut the tabs of the first electrode unit and to wind it up. The second winding mechanism 70 is used to wind up the second electrode unit.

[0031] Among them, defective electrode sheets refer to electrode sheets with surface damage or wrinkles that prevent them from being used normally in the production of battery cells.

[0032] The unwinding shaft 110, the first winding shaft 620, and the second winding shaft 710 are all mounted on the housing via brackets. After the electrode 80, which is wound around the unwinding shaft 110, is unwound, it moves toward the first winding shaft 620 or the second winding shaft 710 and is wound around the corresponding winding shaft.

[0033] Specifically, the electrode slitting equipment of this application adopts a slitting mechanism 50 located upstream of the first winding mechanism 60 and the second winding mechanism 70, so that after the electrode 80 is first slitting by the slitting mechanism 50, the tab cutting structure 610 of the first winding mechanism 60 further cuts the slitting first electrode unit to form tabs, completing a secondary cut. The correction mechanism 40 is located between the slitting mechanism 50 and the first winding shaft 620 to correct the first electrode unit that moves towards the tab cutting structure 610 after being slitting by the slitting mechanism 50, ensuring the accuracy of the position of the first electrode unit entering the tab cutting structure 610. This overcomes the problem of tape breakage and other efficiency issues caused by cutting the tabs first and then slitting the electrode 80 in the prior art. The structural setting of this application optimizes the electrode 80 cutting structure and improves the production efficiency of electrode 80 cutting.

[0034] It is understood that the upstream and downstream in this application refer to the front and back ends of the trajectory through which the electrode 80 is transported. During the transport of the electrode 80, a certain fixed area of ​​the electrode 80 first reaches the upstream and then continues to be transported to the downstream.

[0035] In this embodiment, the electrode slitting device employs a replaceable first winding mechanism 60 and a second winding mechanism 70 to wind up the first and second electrode units slit by the slitting mechanism 50. This allows qualified first electrode units to be cut by the tab cutting structure 610 and then wound up by the first winding mechanism 60. Unqualified second electrode units can be recycled by the second winding mechanism 70. The configuration of the first winding mechanism 60 and the second winding mechanism 70 in this application provides a choice for the winding direction of the electrode 80, thereby avoiding tab cutting of unqualified second electrode units, avoiding material waste, simplifying the operation process, and improving efficiency.

[0036] The first winding mechanism 60 is used to wind up qualified first electrode units and cut them into electrode ears using the electrode ear cutting section. The second winding mechanism 70 is used to wind up and collect unqualified second electrode units. Unqualified second electrode units are electrode sheets 80 with defects such as wrinkles or damage. These defects can be manually identified by observing the structure of the electrode sheet 80 and collected into either the first winding mechanism 60 or the second winding mechanism 70. Specifically, the first winding mechanism 60 and the second winding mechanism 70 can be switched manually. When manually switching the electrode sheet 80 between the first winding mechanism 60 and the second winding mechanism 70, the electrode sheet 80 can be manually wound onto either the first winding shaft 620 or the second winding shaft 710.

[0037] In this embodiment, since the electrode sheet 80 is slit by the slitting mechanism 50 to form at least two parts along the width direction of the electrode sheet 80, that is, the electrode sheet 80 is slit to form at least two electrode sheet units, the first winding mechanism 60 and the second winding mechanism 70 of this application are each provided with multiple such mechanisms. The output end of the slitting mechanism 50 has multiple output ports arranged along the width direction of the electrode sheet 80, and the multiple output ports are respectively arranged in a one-to-one correspondence with the first winding mechanism 60 and the second winding mechanism 70. The slit electrode sheet 80 is simultaneously output from different output ports and moves toward the corresponding first winding mechanism 60 or second winding mechanism 70, which is beneficial to improving production efficiency.

[0038] The transport direction of electrode 80 is Figure 1 and Figure 2 The width direction of electrode 80 is shown in the X direction. Figure 2 Y direction shown.

[0039] In this embodiment, the first winding mechanism 60 further includes a first transport member, the input end of which is located at the output end of the slitting mechanism 50, and the first winding shaft 620 is located at the end of the first transport member away from the slitting mechanism 50. The tab cutting structure 610 cuts the first electrode unit on the first transport member to form a tab.

[0040] The first transport component can be a conveyor belt or a structure formed by multiple conveyor rollers. The first transport component is used to transport the slit first electrode unit output from the output end of the slitting mechanism 50 to the first take-up shaft 620. When the first transport component is a conveyor belt, the electrode 80 is laid on the conveyor belt and moves with the conveyor belt. During the movement, the electrode ear cutting structure 610 can cut the first electrode unit on the conveyor belt to form an electrode ear structure. When the first transport component is multiple conveyor rollers, the first electrode unit is pulled by multiple conveyor rollers. Both the traction roller 20 and the conveyor belt are driven by motors.

[0041] Specifically, the electrode cutting structure 610 includes a housing and a laser cutting component. The first electrode unit to be cut on the first transport component passes through the housing, and the laser cutting component is disposed inside the housing and on the upper side of the first transport component.

[0042] In this embodiment, when the first electrode unit needs to be laser-cut to form an electrode tab, the laser head of the laser cutter moves toward the first electrode unit under the drive of the drive component and performs a cutting operation on the first electrode unit to form an electrode tab. After the cutting is completed, the laser head moves away from the first electrode unit through the drive component, wherein the drive component can be a motor.

[0043] The first electrode unit is laser-cut inside the housing. The housing provides protection, which improves safety during use. It also isolates the electrode unit from environmental factors, thus improving cutting efficiency. Furthermore, the cut portion of the first electrode unit can be easily collected through the housing, which improves cleanliness.

[0044] In this embodiment, multiple laser cutting components are provided inside the housing, and these components are spaced apart along the transport direction of the first electrode unit. By using multiple laser cutting components, the electrode 80 can be processed simultaneously, which helps to improve the cutting efficiency of electrode tab forming.

[0045] like Figures 1 to 2 As shown, the second winding mechanism 70 also includes a second transport member, the input end of which is connected to the output end of the slitting mechanism 50, and the second winding shaft 710 is disposed at the end of the second transport member away from the slitting mechanism 50.

[0046] The second transport component can be a conveyor belt or a structure formed by multiple conveyor rollers. The second transport component is used to transport the second electrode unit toward the second take-up shaft 710. The corresponding conveyor belt and conveyor rollers are driven by a motor.

[0047] In this embodiment, the slitting mechanism 50 includes a housing, a drive unit, and a cutting part. The housing is disposed on the machine housing and has an input end and an output end. The housing includes a top plate and a bottom plate disposed on both sides of the electrode 80 along the height direction of the housing. The drive unit is disposed on the housing and is a motor.

[0048] The cutting part is located inside the housing. The cutting part includes a blade holder and a circular slitting blade 510 rotatably mounted on the blade holder. The blade holder is slidably mounted on the top plate along the width direction of the electrode 80. The driving member is drivenly connected to the slitting blade 510 to provide driving force for the rotation of the slitting blade 510. The bottom plate has a limiting groove on the side facing the top plate. The bottom of the slitting blade 510 passes through the electrode 80 and extends into the interior of the limiting groove.

[0049] Specifically, the drive unit connects to the circular slitting blade 510 via a transmission shaft to drive the slitting blade 510 to rotate. During the rotation of the slitting blade 510, the moving electrode sheet 80 is slitting.

[0050] The limiting groove serves to limit and correct the slitting blade 510, thereby ensuring that the slitting blade 510 can stably cut the electrode sheet 80.

[0051] In this embodiment, the blade holder can slide along the width direction of the electrode 80 to cut the electrode 80 into first electrode units of different widths, thus making it suitable for cutting first electrode units with different size requirements; the slitting blade 510 is detachably mounted on the blade holder so that the electrode 80 of different thicknesses can be cut by replacing the slitting blade 510 of different diameters.

[0052] In this embodiment, the electrode 80 enters between the top plate and the bottom plate from the input end of the housing. When the electrode 80 passes through the slitting blade 510, the slitting blade 510 cuts the electrode 80. The cut electrode 80 forms multiple parts along the width direction. Different parts are output from the output port of the corresponding housing output end to match the corresponding first winding mechanism 60 and second winding mechanism 70.

[0053] like Figure 1 As shown, the electrode slitting equipment also includes multiple correction mechanisms 40 disposed on the housing, one of which is disposed between the unwinding mechanism 10 and the slitting mechanism 50, and the other is disposed between the slitting mechanism 50 and the first take-up shaft 620.

[0054] Specifically, the correction mechanism 40 is set between the unwinding mechanism 10 and the slitting mechanism 50 to correct the position of the electrode 80, ensuring that the electrode 80 does not shift, and avoiding the problem of non-compliant slitting dimensions caused by the shift of the electrode 80. The correction mechanism 40 of this application improves the accuracy of electrode 80 slitting.

[0055] The correction mechanism 40 is set between the slitting mechanism 50 and the first take-up shaft 620 to correct the first electrode unit that moves toward the tab cutting structure 610 after being slitted by the slitting mechanism 50. This ensures the accuracy of the position of the first electrode unit entering the tab cutting structure 610 and avoids the first electrode unit from shifting, which would prevent the tab from being cut to the correct size.

[0056] In this embodiment, the correction mechanism 40 includes a correction roller, which is rotatably mounted on the housing. Specifically, the correction roller rotates, guiding and limiting the electrode 80 through its rotation. Correction rollers are provided on both sides of the electrode 80 along its width direction, and are rotatably connected to the electrode 80. The correction rollers are used to contact both sides of the electrode 80 in the width direction to achieve the guiding and correcting functions, and also have a certain traction effect.

[0057] like Figures 1 to 2As shown, in this embodiment, the housing is provided with multiple traction rollers 20, which are driven by a motor to rotate. The rotating traction rollers 20 are used to pull the electrode sheet 80 to move, so as to ensure that the electrode sheet 80 is transported and moved towards the first take-up shaft 620 or the second take-up shaft 710 by the unwinding shaft 110.

[0058] A traction roller 20 is provided between the unwinding mechanism 10 and the slitting mechanism 50 so that the electrode sheet 80 can be stably moved to the slitting mechanism 50 by the traction roller 20, wherein one or more traction rollers 20 are provided.

[0059] A traction roller 20 is provided between the slitting mechanism 50 and the first take-up shaft 620 so that the electrode sheet 80 can be stably moved to the first take-up shaft 620 by the traction roller 20, wherein one or more traction rollers 20 are provided.

[0060] A traction roller 20 is provided between the slitting mechanism 50 and the second take-up shaft 710 so that the electrode sheet 80 can be stably moved to the second take-up shaft 710 by the traction roller 20, wherein one or more traction rollers 20 are provided.

[0061] like Figures 1 to 2 As shown, the electrode slitting equipment also includes a pressure roller 30 disposed on the machine housing, and the pressure roller 30 is disposed between the unwinding mechanism 10 and the slitting mechanism 50.

[0062] The pressure roller 30 is rotatably mounted on the machine housing and is used to press the electrode sheet 80 to achieve tension.

[0063] In this embodiment, the pressure roller 30 is designed to ensure the flatness of the electrode 80, thereby ensuring that the electrode 80 entering the housing is flat and avoiding wrinkles on the electrode 80.

[0064] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0065] The electrode slitting equipment of this application adopts a slitting mechanism 50 located upstream of the first winding mechanism 60 and the second winding mechanism 70, so that after the electrode 80 is first slitting by the slitting mechanism 50, the electrode tab cutting structure 610 of the first winding mechanism 60 further cuts the slitting first electrode unit to form an electrode tab, thus completing the secondary cutting. This overcomes the problem of efficiency issues such as tape breakage caused by cutting to form an electrode tab before slitting the electrode 80 in the prior art. The structural setting of this application optimizes the electrode 80 cutting structure and improves the production efficiency of electrode 80 cutting.

[0066] This application employs a replaceable first winding mechanism 60 and a second winding mechanism 70 to wind up the first electrode unit cut by the slitting mechanism 50. This enables the qualified first electrode unit to be wound up by the first winding mechanism 60 to complete the corresponding cutting and form an electrode tab. Unqualified second electrode units can be recycled through the second winding mechanism 70. The configuration of the first winding mechanism 60 and the second winding mechanism 70 in this application provides a choice for the winding direction of the electrode 80, thereby avoiding the cutting of electrode tabs on unqualified second electrode units, avoiding material waste, simplifying the operation process, and improving efficiency.

[0067] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0068] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0069] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0070] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An electrode slitting device, characterized in that, include: A housing and, sequentially along the transport direction of the electrode sheet (80), an unwinding mechanism (10), a slitting mechanism (50), and a winding assembly are arranged on the housing. The unwinding mechanism (10) includes an unwinding shaft (110) located at the front end of the housing. The slitting mechanism (50) has an input end, an output end, and a cutting portion located between the input end and the output end. The winding assembly includes: The first winding mechanism (60) includes an electrode cutting structure (610) and a first winding shaft (620), wherein the first winding shaft (620) is disposed downstream of the electrode cutting structure (610) along the transport direction of the electrode sheet (80); The electrode (80) is cut by the slitting mechanism (50) to form at least two electrode units; each electrode unit is a first electrode unit or a second electrode unit; wherein the first electrode unit is a qualified product and the second electrode unit is a defective product; The second winding mechanism (70) includes a second winding shaft (710), and the output end of the slitting mechanism (50) can be selectively cooperated with the first winding mechanism (60) and / or the second winding mechanism (70) to output the electrode unit. The first winding mechanism (60) is used to cut the tabs of the first electrode unit and to wind it up; the second winding mechanism (70) is used to wind up the second electrode unit.

2. The electrode slitting equipment according to claim 1, characterized in that, Both the first winding mechanism (60) and the second winding mechanism (70) are provided with multiple output ports. The output end of the slitting mechanism (50) has multiple output ports arranged along the width direction of the electrode sheet (80). The output ports are arranged one-to-one with the first winding mechanism (60) or the second winding mechanism (70).

3. The electrode slitting equipment according to claim 1, characterized in that, The first winding mechanism (60) further includes: The first transport component has its input end located on the side opposite to the input end of the slitting mechanism (50) at the output end of the slitting mechanism (50). The first take-up shaft (620) is located at the end of the first transport component away from the slitting mechanism (50). The tab cutting structure (610) cuts the first electrode unit on the first transport component to form a tab.

4. The electrode slitting equipment according to claim 3, characterized in that, The electrode cutting structure (610) includes: The first electrode unit on the first transport component passes through the housing; Multiple laser-cut components are disposed inside the housing and on the upper side of the first transport component, and the multiple laser-cut components are spaced apart along the transport direction of the first electrode unit.

5. The electrode slitting device according to claim 1, characterized in that, The second winding mechanism (70) also includes: The second transport component has its input end connected to the output end of the slitting mechanism (50), and the second take-up shaft (710) is located at the end of the second transport component away from the slitting mechanism (50).

6. The electrode slitting device according to claim 1, characterized in that, The electrode slitting device further includes a plurality of correction mechanisms (40) disposed on the housing, wherein one correction mechanism (40) is disposed between the unwinding mechanism (10) and the slitting mechanism (50), and another correction mechanism (40) is disposed between the slitting mechanism (50) and the first take-up shaft (620).

7. The electrode slitting device according to claim 6, characterized in that, The correction mechanism (40) includes: A correction roller is rotatably mounted on the housing. The correction roller is provided on both sides of the electrode (80) along the width direction of the electrode (80). The correction roller is rotatably connected to the electrode (80).

8. The electrode slitting equipment according to claim 1, characterized in that, The cutting mechanism (50) includes: A housing, the housing being disposed on the casing, the housing having the input end and the output end, the housing including a top plate and a bottom plate disposed on both sides of the electrode (80) along the height direction of the housing; The driving component is disposed on the housing; The cutting part is disposed inside the housing. The cutting part includes a blade holder and a circular slitting blade (510) rotatably disposed on the blade holder. The blade holder is slidably disposed on the top plate along the width direction of the electrode (80). The driving member is drivenly connected to the slitting blade (510) to provide driving force for the rotation of the slitting blade (510). The bottom plate has a limiting groove on the side facing the top plate, and the bottom of the slitting blade (510) extends through the electrode (80) into the interior of the limiting groove.

9. The electrode slitting apparatus according to any one of claims 1 to 8, characterized in that, The electrode slitting equipment also includes multiple traction rollers (20) disposed on the housing. The traction roller (20) is provided between the unwinding mechanism (10) and the slitting mechanism (50), between the slitting mechanism (50) and the first take-up shaft (620), and between the slitting mechanism (50) and the second take-up shaft (710).

10. The electrode slitting apparatus according to any one of claims 1 to 8, characterized in that, The electrode slitting device further includes a pressure roller (30) disposed on the machine housing, the pressure roller (30) being disposed between the unwinding mechanism (10) and the slitting mechanism (50).

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