Pole piece slitting device

Abstract

The utility model provides a pole piece slitting device, and belongs to the technical field of batteries. The pole piece slitting device comprises a rack module, a rolling shaft module and a driving module, the rolling shaft module and the driving module are located on the rack module, and the driving module can drive the rolling shaft module to rotate. The rolling shaft module comprises a rolling shaft body and at least two hob assemblies; the at least two hob assemblies are detachably connected with the rolling shaft body and are arranged in the axial direction of the rolling shaft body at intervals. According to the pole piece slitting device, the rolling shaft body does not need to be disassembled, the hob assembly is adjusted more conveniently and rapidly, and the working efficiency of pole piece slitting can be improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to an electrode slitting device. Background Technology

[0002] Battery electrodes are a core and crucial component of a battery, and different battery models may require electrodes of different sizes and shapes. This necessitates the use of slitting equipment to cut standard electrode raw materials into specific sizes and shapes.

[0003] In related technologies, the cutting tools in slitting equipment are fixedly mounted on rollers. If the slitting width needs to be adjusted, the rollers must be removed and the cutting tools reinstalled. Due to the large size of the rollers and their assembly and connection with components such as transmission mechanisms and bearing mechanisms, the assembly and disassembly of the rollers are very cumbersome. This results in low efficiency of cutting tool adjustment and affects the working efficiency of electrode slitting. Utility Model Content

[0004] This application provides an electrode slitting device that can solve the problem of low efficiency in blade adjustment, which affects the working efficiency of electrode slitting.

[0005] The technical solution is as follows:

[0006] An electrode slitting device, comprising: a frame module, a roller module, and a drive module;

[0007] The roller module and the drive module are respectively located on the frame module, and the drive module can drive the roller module to rotate;

[0008] The roller module includes a roller body and at least two roller cutter assemblies;

[0009] The at least two hobbing cutter assemblies are detachably connected to the roller body, and the at least two hobbing cutter assemblies are arranged at intervals along the axial direction of the roller body.

[0010] In some embodiments, the hobbing assembly includes a disc cutter and a cutter holder;

[0011] The disc cutter and the cutter holder are respectively connected to the roller body. The disc cutter is fixedly connected to the axial end face of the cutter holder, and the cutter holder is detachably clamped to the roller body.

[0012] In some embodiments, the tool holder is a sleeve structure with a notch, one end of which is provided with a first locking hole and the other end with a second locking hole. The first locking hole and the second locking hole are arranged coaxially and are fastened together by locking screws.

[0013] In some embodiments, the axial end face of the disc cutter is provided with a first fixing hole, and the disc cutter is provided with a second fixing hole. The first fixing hole and the second fixing hole are arranged coaxially and are fastened together by fixing screws.

[0014] In some embodiments, the number of roller modules is two, the two roller modules are arranged vertically opposite each other, and each of the hobbing cutter assemblies in one of the roller modules is opposite to the cutting edge of one of the hobbing cutter assemblies in the other hobbing cutter module.

[0015] In some embodiments, the two roller modules rotate in opposite directions.

[0016] In some embodiments, the electrode slitting device further includes at least one rubber roller module;

[0017] The at least one rubber roller module is located at at least one position on the upstream side and the downstream side of the roller module, and the at least one rubber roller module is used to provide conveying power to the electrode sheet.

[0018] In some embodiments, the rubber roller module includes an upper rubber roller and a lower rubber roller;

[0019] The axis of the upper rubber roller and the axis of the lower rubber roller are parallel to the axis of the roller body, respectively. The upper rubber roller and the lower rubber roller are arranged to press against each other in the vertical direction, and the electrode is located between the upper rubber roller and the lower rubber roller.

[0020] At least one of the upper and lower glue rollers is connected to the drive module, and the drive module is capable of driving at least one of the upper and lower glue rollers to rotate.

[0021] In some embodiments, the rubber roller module further includes at least two pre-tightening mechanisms;

[0022] The at least two pre-tightening mechanisms are respectively connected to the axial ends of at least one of the upper and lower rubber rollers. The at least two pre-tightening mechanisms are used to provide a pre-tightening force that presses against each other on the upper and lower rubber rollers, so that the upper and lower rubber rollers clamp the electrode sheet.

[0023] In some embodiments, the drive module includes at least one drive motor;

[0024] The output shaft of at least one drive motor extends to the outer side of the frame module and is connected to a drive wheel. One axial end of the roller body extends to the outer side of the frame module and is connected to a driven wheel. The drive wheel and the driven wheel are connected in a driving connection.

[0025] The beneficial effects of the technical solution provided in this application include at least the following:

[0026] The electrode slitting device of this application utilizes a drive module to rotate a roller module. The roller module uses a roller cutter assembly on it to slit the electrode. The roller cutter assembly is detachably connected to the roller body. When it is necessary to adjust the slitting width, it is only necessary to disconnect the connection between the roller cutter assembly and the roller body, and then adjust the position of the roller cutter assembly along the axial direction of the roller body. After the adjustment is completed, the roller cutter assembly can be reconnected and locked to the roller body without disassembling the roller body. The adjustment of the roller cutter assembly is more convenient and quick, which helps to improve the working efficiency of electrode slitting. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the electrode slitting device provided in the embodiments of this application;

[0029] Figure 2 This is an exploded view of the electrode slitting device provided in the embodiments of this application;

[0030] Figure 3 This is an exploded view of the electrode slitting device provided in the embodiments of this application;

[0031] Figure 4 This is a schematic diagram showing the relative positions of the hobbing cutter assembly provided in the embodiments of this application;

[0032] Figure 5 This is a schematic diagram of the structure of an electrode slitting device provided in another embodiment of this application;

[0033] Figure 6 This is a schematic diagram of the structure of an electrode slitting device provided in another embodiment of this application;

[0034] Figure 7 yes Figure 5 Enlarged view of the local structure at point A in the middle.

[0035] The reference numerals in the figure are respectively:

[0036] 1. Rack module;

[0037] 11. Frame; 12. End plate; 121. Pre-tightening groove; 13. Support plate;

[0038] 2. Roller module;

[0039] 21. Roller body; 22. Hob assembly; 221. Disc cutter; 2211. Second fixing hole; 222. Cutter holder; 2221. Notch; 2222. First locking hole; 2223. Second locking hole; 2224. First fixing hole; 23. Driven wheel; 24. Synchronizing gear;

[0040] 3. Drive module;

[0041] 31. Drive motor; 32. Drive wheel;

[0042] 4. Rubber roller module;

[0043] 41. Upper rubber roller; 42. Lower rubber roller; 43. Pre-tightening mechanism; 431. Pre-tightening cylinder; 432. Connecting plate. Detailed Implementation

[0044] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0045] In the description of this application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the purpose of facilitating and simplifying the description of this application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0046] It should be understood that "connection" and "connected" can both refer to a mechanical or physical connection. That is, A and B being connected or connected can mean that there are fastened components (such as screws, bolts, rivets, etc.) between A and B, or that A and B are in contact with each other and are difficult to separate.

[0047] Unless otherwise defined, all technical terms used in the embodiments of this application have the same meaning as commonly understood by one of ordinary skill in the art.

[0048] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0049] Combination Figure 1 and Figure 2 As shown, this embodiment provides an electrode slitting device, which includes: a frame module 1, a roller module 2, and a drive module 3.

[0050] The roller module 2 and the drive module 3 are respectively located on the frame module 1, and the drive module 3 can drive the roller module 2 to rotate. The roller module 2 includes a roller body 21 and at least two hobbing cutter assemblies 22. The at least two hobbing cutter assemblies 22 are detachably connected to the roller body 21, and the at least two hobbing cutter assemblies 22 are arranged at intervals along the axial direction of the roller body 21.

[0051] In this embodiment, the electrode slitting device uses the drive module 3 to drive the roller module 2 to rotate. The roller module 2 uses the roller cutter assembly 22 on it to slit the electrode. The roller cutter assembly 22 is detachably connected to the roller body 21. When it is necessary to adjust the slitting width, it is only necessary to disconnect the connection between the roller cutter assembly 22 and the roller body 21, and then adjust the position of the roller cutter assembly 22 along the axial direction of the roller body 21. After the adjustment is completed, the roller cutter assembly 22 can be reconnected and locked to the roller body 21 without disassembling the roller body 21. The adjustment of the roller cutter assembly 22 is more convenient and quick, which helps to improve the working efficiency of electrode slitting.

[0052] Among some possible implementations, refer to Figure 5 , Figure 6 and Figure 7 As shown, the frame module 1 includes a frame 11, an end plate 12, and a support plate 13; wherein the frame 11 is a quadrilateral frame structure, divided into upper and lower layers, the roller module 2 is arranged on the upper layer of the frame 11, and the drive module 3 is arranged on the lower layer of the frame 11.

[0053] With the axis of the roller body 21 in the roller module 2 as a reference, the frame 11 is provided with end plates 12 at both ends along the axis of the roller body 21, and the two ends of the roller body 21 are supported by the two end plates 12.

[0054] On the upper layer of the frame 11, the upstream and downstream sides of the roller module 2 are respectively provided with support plates 13. The support plates 13 are used to support the electrode sheets so that the electrode sheets can correspond to the positions of the disc cutter 221.

[0055] Combination Figure 2 As shown, in some embodiments, the hobbing cutter assembly 22 includes a disc cutter 221 and a cutter holder 222.

[0056] The disc cutter 221 and the cutter holder 222 are respectively connected to the roller body 21. The disc cutter 221 is fixedly connected to the axial end face of the cutter holder 222, and the cutter holder 222 is detachably clamped to the roller body 21.

[0057] With the above arrangement, the disc cutter 221 is detachably connected to the roller body 21 by means of the cutter holder 222. When it is necessary to adjust the cutting width, it is only necessary to disconnect the connection between the cutter holder 222 and the roller body 21, and then the cutter holder 222 can be moved along the axial direction of the roller body 21 to adjust the position of the disc cutter 221, increase or decrease the spacing between adjacent disc cutters 221, and meet the cutting requirements of electrode sheets of different sizes.

[0058] Combination Figure 3 As shown, in some embodiments, the tool holder 222 is a sleeve structure with a notch 2221. One end of the notch 2221 is provided with a first locking hole 2222, and the other end is provided with a second locking hole 2223. The first locking hole 2222 and the second locking hole 2223 are arranged coaxially and are fastened together by locking screws.

[0059] In this embodiment, the tool holder 222 is a sleeve structure and has a notch 2221, which allows the sleeve structure to increase or decrease its inner diameter within a certain range. When the inner diameter of the sleeve structure increases, a gap appears between the tool holder 222 and the roller body 21, and the tool holder 222 can move axially. When the inner diameter of the sleeve structure decreases, the tool holder 222 is clamped to the roller body 21, and the disc cutter 221 is also fixed to the roller body 21.

[0060] The detachable connection between the tool holder 222 and the roller body 21 has a simple structure and is easy to assemble and disassemble.

[0061] Combination Figure 3 As shown, in some embodiments, the axial end face of the disc cutter 221 is provided with a first fixing hole 2224, and the disc cutter 221 is provided with a second fixing hole 2211. The first fixing hole 2224 and the second fixing hole 2211 are arranged coaxially and are fastened together by fixing screws.

[0062] With the above arrangement, when the first fixing hole 2224 and the second fixing hole 2211 are fastened together with fixing screws, the disc cutter 221 can be fastened to the axial end face of the tool holder 222.

[0063] Combination Figure 1 and Figure 4 As shown, in some embodiments, there are two roller modules 2, which are arranged vertically to each other, and each hob assembly 22 in one roller module 2 is opposite to the cutting edge of a hob assembly 22 in the other hob module.

[0064] With the above arrangement, the electrode sheet can be cut using two roller cutter assemblies 22 arranged vertically, resulting in higher cutting efficiency. Furthermore, since the upper and lower roller cutter assemblies 22 work simultaneously, the electrode sheet is less prone to burrs, resulting in better cutting quality.

[0065] In some embodiments, the two roller modules 2 rotate in opposite directions. By controlling the rotation directions of the two roller modules 2 to be opposite, the horizontal force exerted by the disc cutters 221 in the upper and lower roller cutter assemblies 22 on the upper and lower surfaces of the electrode is the same, resulting in a better shearing effect.

[0066] Among some possible implementations, refer to Figure 6 As shown, synchronous gears 24 are respectively installed at the ends of the axes of the two roller bodies 21. The two synchronous gears 24 are meshed and connected. When one of the roller bodies 21 is driven to rotate by the drive module 3, the roller body 21 will drive the corresponding synchronous gear 24 to rotate. The synchronous gear 24 drives the other synchronous gear 24 to rotate, and then drives the other roller body 21 to rotate.

[0067] Combination Figure 5 As shown, in some embodiments, the electrode slitting device further includes at least one rubber roller module 4; the at least one rubber roller module 4 is located at at least one position on the upstream side and the downstream side of the roller module 2, and the at least one rubber roller module 4 is used to provide conveying power to the electrode.

[0068] By arranging the rubber roller module 4 upstream of the roller module 2, a traction conveying force can be provided for the electrodes entering the roller module 2, improving the feeding efficiency of the electrode slitting device and thus improving the slitting efficiency of the electrode slitting device. Similarly, by arranging the rubber roller module 4 downstream of the roller module 2, a traction force can be provided for the electrodes output from the roller module 2, which can also improve the feeding efficiency of the electrode slitting device and thus improve the slitting efficiency of the electrode slitting device.

[0069] Combination Figure 5 and Figure 6 As shown, in some embodiments, the rubber roller module 4 includes an upper rubber roller 41 and a lower rubber roller 42. The axis of the upper rubber roller 41 and the axis of the lower rubber roller 42 are parallel to the axis of the roller body 21, respectively. The upper rubber roller 41 and the lower rubber roller 42 are arranged to press against each other in the vertical direction, and the electrode is located between the upper rubber roller 41 and the lower rubber roller 42. At least one of the upper rubber roller 41 and the lower rubber roller 42 is connected to the drive module 3, and the drive module 3 is capable of driving at least one of the upper rubber roller 41 and the lower rubber roller 42 to rotate.

[0070] With the above arrangement, the electrode sheet is positioned between the upper glue roller 41 and the lower glue roller 42. When the upper glue roller 41 and / or the lower glue roller 42 rotate, the electrode sheet can be conveyed along the rotation direction. The upper glue roller 41 and / or the lower glue roller 42 can also be powered by the drive module 3.

[0071] In some possible implementations, flexible silicone sleeves are arranged on the surfaces of the upper rubber roller 41 and the lower rubber roller 42. The flexible silicone sleeves can prevent the upper rubber roller 41 and the lower rubber roller 42 from crushing the electrode sheet, and can also increase the friction between the upper rubber roller 41 and the lower rubber roller 42 and the electrode sheet, thereby improving the conveying efficiency of the rubber roller module 4 to the electrode sheet.

[0072] Combination Figure 5 and Figure 7 As shown, in some embodiments, the rubber roller module 4 further includes at least two pre-tightening mechanisms 43; the at least two pre-tightening mechanisms 43 are respectively connected to at least one of the axial ends of the upper rubber roller 41 and the lower rubber roller 42, and the at least two pre-tightening mechanisms 43 are used to provide a pre-tightening force that presses against each other on the upper rubber roller 41 and the lower rubber roller 42, so that the upper rubber roller 41 and the lower rubber roller 42 clamp the electrode sheet.

[0073] To improve the conveying efficiency of the rubber roller module 4 for electrode sheets and to accommodate electrode materials of different thicknesses, a pre-tightening component is used to apply pre-tightening force to the upper rubber roller 41 and / or the lower rubber roller 42. This allows the upper rubber roller 41 and the lower rubber roller 42 to apply a certain pressure to the electrode sheets. According to the principle of friction, the greater the pressure, the greater the friction. Therefore, by providing a certain pre-tightening force, the friction between the upper rubber roller 41 and the lower rubber roller 42 and the electrode sheets can be increased, preventing the electrode sheets from slipping and improving conveying efficiency and conveying accuracy.

[0074] Meanwhile, there are at least two pre-tightening mechanisms 43, which are simultaneously arranged at both ends of the upper rubber roller 41 or the lower rubber roller 42. These mechanisms can apply the same pre-tightening force to either the upper or lower rubber roller 42, preventing a difference in the axial resistance pressure between the upper and lower rubber rollers 41 and 42. If a difference in the axial resistance pressure occurs between the upper and lower rubber rollers 41 and 42, it may cause slippage of the electrode sheet on one side, resulting in a lower electrode sheet conveying angle and consequently, differences in the electrode sheet dimensions cut by the roller module 2.

[0075] In some possible implementations, the end plate 12 of the frame module 1 is provided with a pre-tightening groove 121. The upper rubber roller 41 and the lower rubber roller 42 are arranged sequentially in the pre-tightening groove 121, with the lower rubber roller 42 at the bottom and the upper rubber roller 41 at the top. The pre-tightening mechanism 43 includes a pre-tightening cylinder 431 and a connecting plate 432. One end of the pre-tightening cylinder 431 is connected to the end plate 12 through the connecting plate 432, and the other end of the pre-tightening cylinder 431 is connected to the end of the upper rubber roller 41. By controlling the extension or retraction of the pre-tightening cylinder 431, the upper rubber roller 41 can be moved within the pre-tightening groove 121. When the upper rubber roller 41 moves closer to the lower rubber roller 42, the pre-tightening between the two rubber rollers increases. When the upper rubber roller 41 moves away from the lower rubber roller 42, the pre-tightening between the two rubber rollers decreases.

[0076] Combination Figure 7As shown, in some embodiments, the drive module 3 includes at least one drive motor 31; the output shaft of at least one drive motor 31 extends to the outer side of the frame module 1 and is connected to a drive wheel 32, and one axial end of the roller body 21 extends to the outer side of the frame module 1 and is connected to a driven wheel 23; the drive wheel 32 and the driven wheel 23 are connected in a transmission connection.

[0077] With the above arrangement, the drive module 3 can use the drive motor 31 inside to drive the drive wheel 32 to rotate, the drive wheel 32 to drive the driven wheel 23 to rotate, and the driven wheel 23 to drive the roller body 21 to rotate, thereby realizing the electrode sheet cutting operation.

[0078] In some possible implementations, there are two drive motors 31, one of which is used to drive the roller body 21 to rotate, and the other is used to drive the upper rubber roller 41 and / or the lower rubber roller 42 to rotate.

[0079] It should be noted that in this article, "several" and "at least one" refer to one or more, while "multiple" and "at least two" refer to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0080] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0081] In the description of this specification, the references to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the embodiments or examples that are included in at least one embodiment or example of this application.

[0082] The above description is merely an embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this application should be included within the protection scope of this application.

Claims

1. An electrode slitting device, characterized in that, The electrode slitting device includes: a frame module (1), a roller module (2), and a drive module (3); The roller module (2) and the drive module (3) are respectively located on the frame module (1), and the drive module (3) can drive the roller module (2) to rotate; The roller module (2) includes a roller body (21) and at least two hobbing cutter assemblies (22); The at least two hobbing cutter assemblies (22) are detachably connected to the roller body (21), and the at least two hobbing cutter assemblies (22) are arranged at intervals along the axial direction of the roller body (21).

2. The electrode slitting device according to claim 1, characterized in that, The hobbing cutter assembly (22) includes a disc cutter (221) and a cutter holder (222); The disc cutter (221) and the cutter holder (222) are respectively connected to the roller body (21). The disc cutter (221) is fixedly connected to the axial end face of the cutter holder (222). The cutter holder (222) is detachably clamped to the roller body (21).

3. The electrode slitting device according to claim 2, characterized in that, The tool holder (222) is a sleeve structure with a notch (2221). One end of the notch (2221) is provided with a first locking hole (2222), and the other end is provided with a second locking hole (2223). The first locking hole (2222) and the second locking hole (2223) are arranged coaxially and are fastened together by locking screws.

4. The electrode slitting device according to claim 2, characterized in that, The disc cutter (221) has a first fixing hole (2224) on its axial end face and a second fixing hole (2211) on its disc cutter (221). The first fixing hole (2224) and the second fixing hole (2211) are arranged coaxially and are fastened together by fixing screws.

5. The electrode slitting apparatus according to any one of claims 1 to 4, characterized in that, The number of roller modules (2) is two, and the two roller modules (2) are arranged vertically and vertically, and each of the hobbing cutter assemblies (22) in one of the roller modules (2) is opposite to the cutting edge of one of the hobbing cutter assemblies (22) in the other hobbing cutter module.

6. The electrode slitting device according to claim 5, characterized in that, The two roller modules (2) rotate in opposite directions.

7. The electrode slitting device according to claim 1, characterized in that, The electrode slitting device also includes at least one rubber roller module (4); The at least one rubber roller module (4) is located at at least one position on the upstream side and the downstream side of the roller module (2), and the at least one rubber roller module (4) is used to provide conveying power to the electrode sheet.

8. The electrode slitting device according to claim 7, characterized in that, The rubber roller module (4) includes an upper rubber roller (41) and a lower rubber roller (42); The axis of the upper rubber roller (41) and the axis of the lower rubber roller (42) are parallel to the axis of the roller body (21), respectively. The upper rubber roller (41) and the lower rubber roller (42) are arranged to press against each other in the vertical direction, and the electrode is located between the upper rubber roller (41) and the lower rubber roller (42). At least one of the upper glue roller (41) and the lower glue roller (42) is connected to the drive module (3), and the drive module (3) is capable of driving at least one of the upper glue roller (41) and the lower glue roller (42) to rotate.

9. The electrode slitting device according to claim 8, characterized in that, The rubber roller module (4) also includes at least two pre-tightening mechanisms (43); The at least two pre-tightening mechanisms (43) are respectively connected to at least one of the upper glue roller (41) and the lower glue roller (42) at both ends of the axial direction. The at least two pre-tightening mechanisms (43) are used to provide a pre-tightening force that presses against each other on the upper glue roller (41) and the lower glue roller (42), so that the upper glue roller (41) and the lower glue roller (42) clamp the electrode sheet.

10. The electrode slitting apparatus according to any one of claims 1 to 4, 7 to 9, characterized in that, The drive module (3) includes at least one drive motor (31); The output shaft of at least one drive motor (31) extends to the outer side of the frame module (1) and is connected to a drive wheel (32). One axial end of the roller body (21) extends to the outer side of the frame module (1) and is connected to a driven wheel (23). The drive wheel (32) and the driven wheel (23) are connected in a transmission.

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