A pole piece waste separation mechanism and a pole piece cutting device

Abstract

The application relates to the technical field of pole piece processing, and more particularly to a pole piece waste separation mechanism and a pole piece cutting device, which comprises a roller for guiding the movement of a pole piece and a vibration assembly; wherein the two ends of the roller are movably arranged; the vibration assembly is used for driving the roller to vibrate, so that the pole piece waste generated in the pole piece cutting process is separated in a vibrating mode. The pole piece waste adhered to the pole piece is stripped in a vibrating mode, which is not only high in efficiency, but also does not cause the pole lug on the pole piece to be torn.

Description

Technical Field

[0001] This utility model relates to the field of electrode processing technology, and more specifically, to an electrode waste separation mechanism and an electrode cutting device. Background Technology

[0002] The manufacturing process of secondary batteries includes a die-cutting step, which involves cutting the electrode sheets to form tabs. This process also generates electrode waste. Currently, laser die-cutting is commonly used. However, during laser die-cutting, residual molten metal can cause small areas of adhesion between the electrode sheet and the waste material at the processed edges, making subsequent peeling difficult. The traditional method involves using a negative pressure fan to separate the adhered waste material. However, this method can only remove some of the waste material and cannot completely peel it off the electrode sheet.

[0003] Chinese utility model patent CN219703805U discloses a stripping module for electrode cutting waste, comprising a feeding roller and a stripping roller. The stripping roller and the feeding roller are arranged parallel to each other and corresponding to the waste. Multiple first exhaust chambers are formed within the stripping roller along its axis. Multiple exhaust holes communicating with the first exhaust chambers are arranged on the outer surface of the stripping roller. A first opening is formed at one end of the first exhaust chamber corresponding to the first opening. An exhaust module is connected to one end of the stripping roller corresponding to the first opening. A second exhaust chamber is formed within the exhaust module, and a second opening is formed corresponding to the first opening. A baffle is provided at the second opening, covering at least one first opening. The module also includes a driving component connected to the stripping roller and driving the stripping roller to rotate relative to the exhaust module. The arrangement of the stripping roller and exhaust holes achieves direct contact between the adsorption point and the waste, thereby providing a large negative pressure to meet the stripping requirements at the points where waste adheres.

[0004] However, the above-mentioned stripping device mainly uses negative pressure adsorption to strip the waste material, and its structure is relatively complex. Therefore, it is necessary to provide another device for stripping and separating electrode waste. Utility Model Content

[0005] The main objective of this invention is to propose an electrode waste separation mechanism that has a simple structure and excellent separation effect on adhering waste.

[0006] To address the aforementioned technical problems, this utility model proposes an electrode waste separation mechanism, comprising:

[0007] Rollers are used to guide the movement of the electrode sheets;

[0008] And vibration components;

[0009] The roller has movable ends; the vibration assembly is used to drive the roller to vibrate so that the electrode waste generated during the electrode cutting process is removed by vibration.

[0010] In the above technical solution, the two ends of the roller are further linearly slidable; the separation mechanism also includes:

[0011] The vibrating roller is connected to one end of the guide roller;

[0012] The vibration component is used to drive the vibrating roller to perform reciprocating linear motion and drive the roller to move synchronously.

[0013] In any of the above technical solutions, the vibration component further includes:

[0014] The vibrating wheel abuts against the vibrating roller;

[0015] The drive unit is used to drive the vibrating wheel to rotate;

[0016] The vibrating wheel has a cam structure.

[0017] In any of the above technical solutions, the guide roller and the vibrating roller are further configured to rotate independently of each other;

[0018] Alternatively, the vibrating roller can be fixed in place, while the end of the guide roller connected to the vibrating roller can be rotated.

[0019] In any of the above technical solutions, the length of the roller is greater than the maximum width of the electrode sheet; the entire surface of the electrode sheet is in contact with the roller.

[0020] In any of the above technical solutions, the guide roller and the vibrating roller are arranged coaxially, the vibrating roller is sleeved on one end of the guide roller, and a bearing is provided between the vibrating roller and the guide roller.

[0021] In any of the above technical solutions, the surface of the vibrating wheel has a number of protrusions distributed along its circumferential direction, and grooves are formed between adjacent protrusions.

[0022] When the vibrating wheel rotates, the vibrating roller achieves reciprocating linear motion through the protrusions and grooves.

[0023] In any of the above technical solutions, the protrusion height is further 0.2-1mm;

[0024] The spacing between adjacent protrusions is 0.5-1mm.

[0025] On the other hand, an electrode cutting device is also proposed, including: a laser and an electrode waste separation mechanism as described above;

[0026] The laser is used to cut the electrode sheet on the roller so that at least one side of the electrode sheet forms an electrode tab.

[0027] Furthermore, the above technical solution also includes:

[0028] The waste hopper, with its opening facing the electrode sheet, is used to collect electrode waste that falls from the electrode sheet.

[0029] Beneficial effects: Compared with existing technologies, in order to separate waste materials, the two ends of the roller are movable and equipped with vibration components. The vibration components make the roller perform linear reciprocating motion at a certain frequency. At this time, the electrode sheets on the roller will vibrate. During the back-and-forth vibration, the electrode waste materials adhering to the electrode sheets will be quickly peeled off from the electrode sheets. This separation mechanism is not only highly efficient, but also simple in structure and easy to promote on a large scale. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0032] Figure 2 This is a side view structural diagram of the present invention;

[0033] Figure 3 This is a top view of the structure of this utility model;

[0034] Figure 4 This is a side view of the vibrating roller and vibrating wheel of this utility model.

[0035] Figure 5 This is a schematic diagram of the installation structure of the vibrating roller of this utility model on the mounting side plate;

[0036] Figure 6 This is a schematic diagram of another mounting structure of the vibrating roller of this utility model on the mounting side plate.

[0037] The annotations in the attached figures are explained as follows:

[0038] 10. Electrode sheet; 20. Electrode waste; 1. Roller; 2. Vibration assembly; 21. Vibration wheel; 211. Protrusion; 212. Groove; 22. Drive unit; 3. Vibration roller; 31. Slider; 4. Mounting side plate; 41. Strip-shaped chute; 42. Elastic element; 5. Laser; 6. Waste hopper. Detailed Implementation

[0039] Hereinafter, exemplary embodiments according to this application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely a part of the embodiments of this application, and not all of the embodiments of this application. It should be understood that this application is not limited to the exemplary embodiments described herein. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0040] It should be noted that, as shown in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" do not specifically refer to the singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, and these steps and elements do not constitute an exclusive list; the method or apparatus may also include other steps or elements.

[0041] If the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0044] The tab is the uncoated metal area left after the electrode edge is cut, used to connect the current collector to the external circuit and to conduct current. During the cutting of the electrode 10 to form the tab, electrode waste 20 is generated, and this waste easily adheres to the electrode 10. Currently, the method used is to separate it by pulling the waste 20 using negative pressure suction; however, this method is not ideal. Therefore, this invention proposes a method that uses vibration to remove the adhered electrode waste, causing it to peel off from the electrode.

[0045] It should be noted that the traditional method of pulling the electrode waste also pulls the electrode tabs, which can easily cause the edges of the electrode tabs to tear.

[0046] The electrode waste separation mechanism of this application will be described in detail below through the following embodiments.

[0047] Example 1:

[0048] like Figures 1-4 As shown, this embodiment proposes an electrode waste separation mechanism, including: a guide roller 1 for guiding the movement of the electrode 10; and a vibration assembly 2;

[0049] The roller 1 has movable ends; the vibration assembly 2 is used to drive the roller 1 to vibrate so that the electrode waste 20 adhering to the electrode 10 is detached by vibration.

[0050] After the electrode 10 is pulled by the traction roller, it moves on the roller 1. At the same time, the electrode 10 is cut, and an electrode tab will be formed on the side of the electrode 10. A certain amount of electrode waste 20 will adhere to the cut position of the electrode 10.

[0051] To separate the electrode waste 20, the two ends of the roller 1 are movably set and a vibration component 2 is provided. The vibration component 2 causes the roller 1 to perform linear reciprocating motion at a certain frequency. At this time, the electrode on the roller 1 will shake. During the back and forth shaking process, the electrode waste 20 adhering to the electrode 10 will be quickly peeled off without causing the electrode tabs on the electrode 10 to tear. This separation mechanism is not only highly efficient, but also simple in structure and easy to promote on a large scale.

[0052] In the above embodiment, the two ends of the roller 1 are linearly sliding. For example, the roller 1 has mounting side plates 4 on both sides, and strip-shaped grooves 41 are opened on the mounting side plates. The two ends of the roller 1 are respectively slidably installed in the strip-shaped grooves 41. At this time, by applying an external force along its sliding direction to the roller 1, the roller 1 can be made to reciprocate.

[0053] In this embodiment, the separation mechanism further includes a vibrating roller 3, which is connected to one end of the passing roller 1; wherein the vibration component 2 is used to drive the vibrating roller 3 to perform reciprocating linear motion and drive the passing roller 1 to move synchronously.

[0054] By setting up a vibrating roller 3 and then applying the vibrating component 2 to the vibrating roller 3, the vibration of the roller 1 is achieved. After the vibrating roller 3 is installed, the end of the roller 1 connected to the strip-shaped groove 41 is replaced by the end of the vibrating roller 3, and one end of the vibrating roller 3 is slidably installed in the strip-shaped groove 41; or after the vibrating roller 3 is sleeved on the end of the roller 1, the end also extends outward and is slidably connected to the strip-shaped groove 41.

[0055] In this embodiment, the vibration assembly 2 includes: a vibration wheel 21 that abuts against the vibration roller 3; and a drive unit 22 for driving the vibration wheel 21 to rotate; wherein the vibration wheel 21 has a cam structure.

[0056] When the drive unit 22 is started, it drives the vibrating wheel 21 to rotate. Since the vibrating roller 3 is a cam structure, it can contact the vibrating roller 3 through its curved contour or groove 212, thereby pushing the vibrating roller 3 to reciprocate along the length of the strip groove, and at the same time driving the roller 1 to reciprocate as well, so as to realize the vibration separation of waste material.

[0057] It should be noted that the guide roller 1 and the vibrating roller 3 are configured to rotate independently. To reduce wear during the linear motion of the vibrating roller 3 driven by the vibrating wheel 21, the vibrating roller 3 is rotated; that is, when the vibrating wheel 21 rotates, it drives the vibrating roller 3 to rotate as well, simultaneously causing the vibrating roller 3 to perform linear motion. If the vibrating roller 3 and the guide roller 1 were fixedly connected, the guide roller 1 would also rotate when the vibrating roller 3 rotates. This would cause the guide roller 1 to exert a traction force on the electrode, thus affecting the electrode's orientation. Therefore, the guide roller 1 and the vibrating roller 3 are configured to slide; that is, when the guide roller 1 is driven to rotate by the electrode, it does not affect the movement of the vibrating roller 3, and when the vibrating roller 3 rotates, it does not drive the guide roller 1 to rotate synchronously.

[0058] Regarding the connection between the guide roller 1 and the vibrating roller 3, specifically, the guide roller 1 and the vibrating roller 3 are arranged coaxially, with the vibrating roller 3 sleeved on one end of the guide roller 1, and a bearing is provided between the vibrating roller 3 and the guide roller 1. By providing the bearing, the mutual interference between the guide roller 1 and the vibrating roller 3 when they rotate is prevented.

[0059] It should be noted that, as Figure 5 and Figure 6 As shown, the length direction of the strip-shaped groove 41 has a certain angle with the horizontal plane, so that the vibrating roller 3 and the guide roller 1 can move upward or obliquely upward after being subjected to external force, and can be reset by their own gravity. Alternatively, the length direction of the strip-shaped groove 41 is parallel to the horizontal plane, and an elastic element 42, such as a spring, is provided in the strip-shaped groove 41 to allow the vibrating roller 3 to reset. One end of the spring is fixed to the inner wall of the strip-shaped groove 41, and a bearing is also provided at the end of the vibrating roller 3 embedded in the strip-shaped groove 41. The bearing is fixed to the slider 31, which can be square or other structures, and is slidably installed in the strip-shaped groove 41. The other end of the spring is connected to the slider 31. After the vibrating wheel 21 applies an external force to the vibrating roller 3, the slider 31 slides in the strip-shaped groove 41, while squeezing the spring. When the external force decreases or disappears, the elastic force of the spring resets the slider 31. Thus, the reciprocating motion of the vibrating roller 3 is realized.

[0060] To improve the smoothness of the operation of the vibrating roller 3 and the guide roller 1, vibrating rollers 3 can be installed on both sides of the guide roller 1, and vibrating components 2 can be externally connected to the vibrating rollers 3 respectively.

[0061] Furthermore, the length of the guide roller 1 is set to be greater than the maximum width of the electrode sheet; the entire surface of the electrode sheet is in contact with the guide roller 1. This is to prevent the electrode sheet from contacting the vibrating roller 3, which would affect the movement of the electrode sheet when the vibrating roller 3 rotates.

[0062] Example 2:

[0063] This embodiment is a further improvement based on Embodiment 1.

[0064] like Figure 4 As shown, in this embodiment, the surface of the vibrating wheel 21 has a plurality of protrusions 211 distributed along its circumferential direction, and a groove 212 is formed between adjacent protrusions 211.

[0065] When the vibrating wheel 21 rotates, the vibrating roller 3 achieves reciprocating linear motion through the protrusion 211 and the groove 212.

[0066] The cam-structured vibrating wheel 21 enables the vibrating roller 3 to perform linear reciprocating motion. To increase the vibration frequency (reciprocating motion frequency) of the vibrating roller 3, multiple protrusions 211 are provided on the vibrating roller 3. When the vibrating wheel 21 rotates, when two adjacent protrusions 211 act on the vibrating roller 3, the force applied by the protrusions 211 will cause the vibrating roller 3 to move in a certain direction first, and then return to its original position through its own gravity and / or spring force. Then, it is pushed by another protrusion 211, causing the vibrating roller 3 to continue moving. As the vibrating wheel 21 rotates continuously, the vibrating roller 3 performs linear reciprocating motion.

[0067] In this embodiment, the optimized size and arrangement of the protrusions 211 on the vibrating roller 21 determine the vibration state of the vibrating roller 3. To prevent excessive vibration of the vibrating roller 3 from affecting the cutting of the electrode sheet, the following parameters are set: the height of the protrusions 211 is 0.2-1mm; the spacing between adjacent protrusions 211 is 0.5-1mm. Furthermore, to control the vibration frequency, the rotational speed of the vibrating roller 21 can be controlled at 50-200 r / s during device operation. Through the above settings, the vibrating roller 3 and the guide roller 1 can generate periodic vibration.

[0068] Example 3:

[0069] This embodiment is a further improvement based on any of the above embodiments.

[0070] like Figures 1-3 As shown, this embodiment proposes a battery electrode cutting device, including: a laser 5 and an electrode waste separation mechanism as described in any of the above embodiments;

[0071] The laser 5 is used to cut the electrode sheet on the roller 1 to form electrode tabs on its side.

[0072] As the electrode sheet moves on roller 1, the laser cuts the tabs on the electrode sheet. At the same time, the separation mechanism is activated, causing roller 1 to vibrate, which causes the waste material adhering to the tabs to be quickly separated from the tabs and fall downwards.

[0073] In this optimized embodiment, it further includes a waste hopper 6, the opening of which faces the electrode 10, for collecting electrode waste 20 that falls from the electrode 10. The waste hopper 6 is provided to facilitate the collection of electrode waste 20.

[0074] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A electrode waste separation mechanism, characterized in that, include: Roller (1) is used to guide the movement of the electrode sheets; And the vibration component (2); The roller (1) is movably mounted at both ends; the vibration assembly (2) is used to drive the roller (1) to vibrate so that the electrode waste generated during the electrode cutting process is dislodged by vibration.

2. The electrode waste separation mechanism as described in claim 1, characterized in that, The two ends of the roller (1) are linearly slidably arranged; the separation mechanism further includes: The vibrating roller (3) is connected to one end of the through roller (1); The vibration component (2) is used to drive the vibration roller (3) to perform reciprocating linear motion and drive the through roller (1) to move synchronously.

3. The electrode waste separation mechanism as described in claim 2, characterized in that, The vibration assembly (2) includes: The vibrating wheel (21) abuts against the vibrating roller (3); Drive unit (22) is used to drive the vibrating wheel (21) to rotate; The vibrating wheel (21) is a cam structure.

4. The electrode waste separation mechanism as described in claim 2 or 3, characterized in that, The roller (1) and the vibrating roller (3) are arranged to rotate independently of each other; Alternatively, the vibrating roller (3) is fixedly installed, and the end of the roller (1) connected to the vibrating roller (3) is rotatably installed.

5. The electrode waste separation mechanism as described in claim 4, characterized in that, The length of the roller (1) is greater than the maximum width of the electrode sheet; the entire surface of the electrode sheet is in contact with the roller (1).

6. The electrode waste separation mechanism as described in claim 4, characterized in that, The guide roller (1) and the vibrating roller (3) are arranged on the same axis. The vibrating roller (3) is sleeved on one end of the guide roller (1), and a bearing is provided between the vibrating roller (3) and the guide roller (1).

7. The electrode waste separation mechanism as described in claim 3, characterized in that, The surface of the vibrating wheel (21) has a number of protrusions (211) distributed along its circumferential direction, and a groove (212) is formed between adjacent protrusions (211). When the vibrating wheel (21) rotates, the vibrating roller (3) achieves reciprocating linear motion through the protrusion (211) and the groove (212).

8. The electrode waste separation mechanism as described in claim 7, characterized in that, The height of the protrusion (211) is 0.2-1mm; The spacing between adjacent protrusions (211) is 0.5-1 mm.

9. An electrode cutting device, characterized in that, include: Laser (5) and electrode waste separation mechanism as described in any one of claims 1-8; The laser (5) is used to cut the electrode sheet on the roller (1) so that at least one side of the electrode sheet forms an electrode tab.

10. The electrode cutting apparatus as described in claim 9, characterized in that, Also includes: Waste hopper (6), with its opening facing the electrode sheet, is used to collect electrode waste that falls from the electrode sheet.

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