An electrode cutting device and a battery production line

Abstract

This utility model provides an electrode cutting device and a battery production line, relating to the field of battery technology. The electrode cutting device includes an upper cutting blade assembly, a lower cutting blade assembly, and a shielding assembly. The upper cutting blade assembly is used to reciprocate relative to the lower cutting blade assembly along a first predetermined direction. The shielding assembly is located on one side of the lower cutting blade assembly and connected to the upper cutting blade assembly. The lower cutting blade assembly includes a lower blade holder and a lower cutting blade disposed on the lower blade holder. The lower blade holder has a dust suction groove and a dust suction port that are interconnected. The dust suction port is located on the side of the lower blade holder near the shielding assembly and on the side of the lower cutting blade away from the upper cutting blade assembly. The dust suction groove provides suction to the dust suction port. The shielding assembly exposes the dust suction port when the upper cutting blade assembly cuts relative to the lower cutting blade assembly in a direction closer to the lower cutting blade, and blocks the dust suction port when the upper cutting blade assembly resets relative to the lower cutting blade assembly in a direction away from the lower cutting blade. This prevents defects from occurring in the cut electrode sheets.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and more specifically, to an electrode cutting device and a battery production line. Background Technology

[0002] Currently, during the high-speed stamping of battery electrodes, debris such as electrode active materials and metals is typically generated. These foreign objects have a significant impact on the lifespan and safety of lithium batteries. Therefore, a dust extraction mechanism needs to be installed on the cutting device to remove the debris. However, because the electrode sheets after cutting are relatively small in mass and thin in thickness, they are easily disturbed or even rolled up under the suction of the dust extraction mechanism, leading to poor electrode sheet production. Utility Model Content

[0003] The problem this invention addresses is: how to improve the production quality of electrode sheets.

[0004] To address the aforementioned problems, this utility model provides an electrode cutting device and a battery production line.

[0005] In a first aspect, the present invention provides an electrode cutting device, including an upper cutting blade assembly, a lower cutting blade assembly and a blocking assembly. The upper cutting blade assembly is used to reciprocate relative to the lower cutting blade assembly along a first predetermined direction. The blocking assembly is located on one side of the lower cutting blade assembly along a second predetermined direction and is connected to the upper cutting blade assembly. The lower cutting blade assembly includes a lower cutting blade and a lower blade holder. The lower blade holder has a dust suction groove and a dust suction port that are interconnected. The dust suction port is located on the side of the lower blade holder near the shielding assembly and on the side of the lower cutting blade away from the upper cutting blade assembly. The dust suction groove is used to provide suction to the dust suction port. The shielding assembly is used to expose the dust suction port when the upper cutting blade assembly cuts in a direction close to the lower cutting blade, and to shield the dust suction port when the upper cutting blade assembly resets in a direction away from the lower cutting blade. The first set direction and the second set direction are perpendicular to each other and are respectively perpendicular to the extension direction of the blade of the lower cutting blade.

[0006] Optionally, the shielding assembly includes a connecting rod and a baffle. The upper cutting blade assembly and the baffle are spaced apart along the first predetermined direction and connected by the connecting rod. The baffle is used to expose or block the dust suction port.

[0007] Optionally, the baffle includes a first baffle and a second baffle that are vertically connected and extend along the length of the lower cutter. The second baffle is opposite to and spaced apart from the lower cutter holder. The first baffle is connected to one end of the second baffle that is close to the upper cutter assembly along the first predetermined direction and is located on the side of the second baffle facing the lower cutter holder. When the upper cutter assembly is in the cutting position, the first baffle is located on the side of the dust suction port that is away from the upper cutter assembly along the first predetermined direction. When the upper cutter assembly is reset, the first baffle is located on the side of the dust suction port that is close to the upper cutter assembly along the first predetermined direction, and the second baffle is opposite to the dust suction port.

[0008] Optionally, the baffle also includes an air guide, wherein the first baffle and the second baffle form an opening at one end along the length of the lower cutter, and the air guide is located at the opening and partially blocks the opening.

[0009] Optionally, when the baffle bar blocks the dust suction port, the distance h1 between the end of the first baffle plate away from the second baffle plate along the first set direction and the blade of the lower cutter in the first set direction is between 0.5 mm and 3 mm. And / or, the distance h2 between the edge of the suction port near the end of the upper cutter assembly along the first set direction and the blade of the lower cutter in the first set direction is between 3 mm and 10 mm; And / or, the dust collection groove has a first groove wall and a second groove wall arranged opposite to and parallel to each other, the distance d between the first groove wall and the second groove wall constitutes the groove width of the dust collection groove, and the value of d is between 0.5mm and 3mm.

[0010] Optionally, one end of the suction groove extends through the side of the lower blade holder to form the suction port. The suction groove is inclined relative to the set plane along its depth direction, and the suction port is located at one end of the suction groove near the lower cutter along the first set direction. The set plane is a plane perpendicular to the first set direction.

[0011] Optionally, the inclination angle of the suction groove is between 30° and 60°.

[0012] Optionally, the upper cutting blade assembly includes an upper blade holder, an upper cutting blade, and an adjustment structure. The upper cutting blade is connected to the upper blade holder through the adjustment structure, and the adjustment structure is used to adjust the preload between the upper cutting blade and the upper blade holder.

[0013] Optionally, the adjustment structure includes a connector and a spring sleeved on the connector. The upper blade holder and the upper cutter are respectively provided with a first insertion groove and a second insertion groove. The connector passes through the first insertion groove and the second insertion groove, and the spring is located between the upper blade holder and the upper cutter.

[0014] Secondly, this utility model provides a battery production line, including the electrode cutting device described above.

[0015] The beneficial effects of the electrode cutting device of this utility model are as follows: by connecting the shielding component to the upper cutting blade assembly which can reciprocate relative to the lower cutting blade assembly in a first set direction, and setting the shielding component on one side of the lower cutting blade assembly in a second set direction, the shielding component can reciprocate relative to the lower cutting blade assembly together with the upper cutting blade assembly. At the same time, by setting a dust collection groove on the lower blade holder and extending the dust collection groove through the side of the lower blade holder near the shielding component to form a dust collection port, the suction force generated in the dust collection groove can be used to suck the debris generated during the cutting process into the dust collection port, thereby achieving the purpose of cleaning the debris. In this way, when the upper cutting blade assembly cuts towards the lower cutting blade relative to the lower cutting blade assembly, the blocking assembly can move synchronously towards the lower cutting blade, thus exposing the dust suction port. This allows the suction force generated during the cutting process to be drawn into the dust suction port using the dust generated in the dust suction groove. When the upper cutting blade assembly returns to its original position relative to the lower cutting blade assembly away from the lower cutting blade, the blocking assembly also moves synchronously away from the lower cutting blade to block the dust suction port. This prevents the cut electrode sheets from experiencing defects such as misalignment, breakage, or curling due to the suction force at the dust suction port, ensuring that the cut electrode sheets can be properly conveyed and leave the cutting device, thereby improving the production quality of the electrode sheets. In addition, by placing the dust suction port on the side of the lower cutting blade away from the upper cutting blade assembly, such as below the lower cutting blade, it is possible to prevent the upper cutting blade assembly from blocking the dust suction port when cutting downwards. This would prevent the dust suction port from being able to draw in the debris located on the outer side of the cutting blade (the debris generated during cutting is mainly distributed on the outer side of the cutting blade), thereby improving the dust suction effect of the dust suction port. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the electrode cutting device in an embodiment of the present invention; Figure 2 This is a cross-sectional view of the electrode cutting device in an embodiment of the present invention when the dust suction port is exposed; Figure 3 This is a cross-sectional view of the electrode cutting device in this embodiment of the present invention when the dust suction port is blocked; Figure 4 This is a partial cross-sectional view of the baffle strip blocking the dust suction port in an embodiment of this utility model; Figure 5This is a schematic diagram of the structure of one end of the baffle in an embodiment of the present invention; Figure 6 This is an exploded view of the upper cutting blade assembly in an embodiment of the present invention; Figure 7 This is a schematic diagram of the upper cutting blade in an embodiment of the present invention; Figure 8 This is a partial cross-sectional view of the upper cutting blade assembly at the connector in an embodiment of this utility model.

[0017] Explanation of reference numerals in the attached figures: 1. Upper cutter assembly; 11. Upper cutter holder; 111. First insertion slot; 12. Upper cutter; 121. Second insertion slot; 13. Adjustment structure; 131. Connector; 132. Spring; 2. Lower cutter assembly; 21. Lower cutter holder; 211. Dust suction groove; 212. Dust suction port; 213. First groove wall; 214. Second groove wall; 22. Lower cutter; 3. Shielding assembly; 31. Connecting rod; 32. Baffle; 321. First shield; 322. Second shield; 323. Air guide; 324. Opening; 500. Electrode. Detailed Implementation

[0018] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Although some embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this utility model. It should be understood that the drawings and embodiments of this utility model are for illustrative purposes only and are not intended to limit the scope of protection of this utility model.

[0019] In the attached figures, the X-axis represents the front-to-back position, with the positive direction of the X-axis representing the front and the negative direction representing the rear. The Y-axis represents the left-to-right position, with the positive direction representing the left and the negative direction representing the right. The Z-axis represents the up-down position, with the positive direction representing the top and the negative direction representing the bottom. It should be noted that the aforementioned representations of the X, Y, and Z axes are for ease of description and simplification of the invention, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0020] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0021] It should be noted that the terms "one" and "multiple" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0022] In related technologies, during high-speed stamping of battery electrodes, debris such as electrode active materials and metals is typically generated. These foreign objects have a significant impact on the lifespan and safety of lithium batteries. Therefore, a dust extraction structure needs to be installed on the cutting device to remove the debris. However, because the electrode sheets after cutting are relatively small in mass and thin in thickness, they are easily disturbed or even rolled up under the suction of the dust extraction structure, leading to poor electrode sheet production.

[0023] To address the problems existing in the aforementioned related technologies, this utility model provides an electrode cutting device and a battery production line.

[0024] Combination Figure 1 , Figure 2 and Figure 3 As shown, an electrode cutting device according to an embodiment of the present invention includes an upper cutting blade assembly 1, a lower cutting blade assembly 2, and a blocking assembly 3. The upper cutting blade assembly 1 is used to reciprocate relative to the lower cutting blade assembly 2 along a first set direction. The blocking assembly 3 is located on one side of the lower cutting blade assembly 2 along a second set direction and is connected to the upper cutting blade assembly 1. The lower cutter assembly 2 includes a lower cutter holder 21 and a lower cutter 22 disposed on the lower cutter holder 21. The lower cutter holder 21 is provided with a dust suction groove 211 and a dust suction port 212 that are interconnected. The dust suction port 212 is disposed on the side of the lower cutter holder 21 near the shielding assembly 3 and on the side of the lower cutter 22 away from the upper cutter assembly 1. The dust suction groove 211 is used to provide suction to the dust suction port 212. The shielding assembly 3 is used to expose the dust suction port 212 when the upper cutter assembly 1 cuts relative to the lower cutter assembly 2 in a direction closer to the lower cutter 22, and to shield the dust suction port 212 when the upper cutter assembly 1 resets relative to the lower cutter assembly 2 in a direction away from the lower cutter 22. The first setting direction and the second setting direction are perpendicular to each other and are respectively perpendicular to the extension direction of the blade of the lower cutter 22.

[0025] It should be noted that the first set direction can be Figure 1 In the Z-axis direction, i.e., the vertical direction, the upper cutting blade assembly 1 and the lower cutting blade assembly 2 of the electrode cutting device are arranged in the vertical direction. Correspondingly, since the blade edge of the lower cutting blade 22 is along the vertical direction... Figure 1 The extension direction is set in the Y-axis direction (i.e., the left-right direction), meaning the cutting edge of the lower cutter 22 extends in the left-right direction. Therefore, the second set direction is... Figure 1 The X-axis direction is the front-to-back direction; the first set direction can also be a direction that is inclined relative to the Z-axis. In this case, the upper cutter assembly 1 and the lower cutter assembly 2 of the electrode cutting device are arranged along the inclined direction.

[0026] It should also be noted that the cutting mechanism can be either a stationary lower cutting blade assembly 2, with the upper cutting blade assembly 1 moving towards the lower cutting blade assembly 2 along a first predetermined direction for cutting, or a stationary upper cutting blade assembly 1, with the lower cutting blade assembly 2 moving towards the lower cutting blade assembly 2 along a first predetermined direction for cutting. For ease of description, the following text will use the first predetermined direction to represent the vertical direction and the second predetermined direction to represent the horizontal direction, with the lower cutting blade assembly 2 stationary and the upper cutting blade assembly 1 cutting downwards and then resetting upwards as an example for detailed explanation. In this case, the reciprocating motion of the upper cutting blade assembly 1 relative to the lower cutting blade assembly 2 along the first predetermined direction can be understood as the upper cutting blade assembly 1 moving up and down in the vertical direction; the blocking assembly 3 being located on one side of the lower cutting blade assembly 2 along the second predetermined direction can be understood as the blocking assembly 3 being located on one side of the lower cutting blade assembly 2 along the horizontal direction, for example... Figure 1 As shown, the shielding component 3 is located on the front side of the lower cutter component 2; the dust suction port 212 is located on the side of the lower cutter 22 away from the upper cutter component 1, which can be understood as the dust suction port 212 being located below the lower cutter 22.

[0027] It should also be noted that the electrode cutting device also includes a drive assembly and a dust collection assembly not shown in the figure. The drive assembly (e.g., a telescopic cylinder) is used to drive the upper cutter assembly 1 to move up and down in the vertical direction. The dust collection assembly (e.g., a fan) is used to generate negative pressure suction in the dust collection groove 211. The negative pressure suction acts on the dust collection port 212 connected to the dust collection groove 211 through the dust collection groove 211, so that the dust collection port 212 has the suction force to suck up debris.

[0028] Specifically, the lower cutter assembly 2 is typically fixed to the worktable, and the upper cutter assembly 1 is located above the lower cutter assembly 2 and is used for cutting along the vertical direction (i.e., ...). Figure 1The upper cutter assembly 1 moves vertically in the Z-axis direction. When the upper cutter assembly 1 moves downward, the upper cutter 12 (described later) in the upper cutter assembly 1 cooperates with the lower cutter 22 in the lower cutter assembly 2 to cut the electrode sheet 500 laid on the conveyor belt and located between the upper cutter 12 and the lower cutter 22. High-speed cutting can be achieved when the upper cutter assembly 1 moves vertically rapidly. The shielding assembly 3 is connected to the upper cutter assembly 1 and located on the side of the lower cutter assembly 2 where the lower cutter 22 is located, such as... Figure 1 As shown, since the lower cutter 22 is located on the front side of the lower cutter assembly 2 (i.e., the lower cutter assembly 2 is located at...), Figure 1 Located on one side of the positive X-axis direction, the shielding component 3 is positioned in front of the lower cutter assembly 2. Furthermore, the lower cutter holder 21 is equipped with a dust collection groove 211 and a dust collection port 212 that communicate with each other. The dust collection groove 211 can be located below the lower cutter 22 (e.g., on one side of the positive X-axis direction), therefore the shielding component 3 is located in front of the lower cutter assembly 2. Figure 2 As shown, it can also be located above the lower cutter 22, or partly above the lower cutter 22 and partly below the lower cutter 22, with the suction port 212 located on the side of the lower cutter holder 21 near the shielding assembly 3 (i.e., the front side of the lower cutter holder 21) and below the lower cutter 22. When the upper cutter assembly 1 cuts downwards, the shielding assembly 3 moves downwards simultaneously to expose the suction port 212; when the upper cutter assembly 1 resets upwards, i.e., when the upper cutter assembly 1 moves upwards to the initial position, the shielding assembly 3 moves upwards simultaneously to block the suction port 212.

[0029] In this embodiment, the shielding component 3 can be connected to the upper cutting blade assembly 1, which can reciprocate relative to the lower cutting blade assembly 2 along a first predetermined direction, and the shielding component 3 can be disposed on one side of the lower cutting blade assembly 2 along a second predetermined direction, so that the shielding component 3 can reciprocate relative to the lower cutting blade assembly 2 together with the upper cutting blade assembly 1. At the same time, by providing a dust suction groove 211 and a dust suction port 212 that are interconnected on the lower blade holder 21, and disposing of the dust suction port 212 on the side of the lower blade holder 21 near the shielding component 3, the suction force generated in the dust suction groove 211 can be used to suck the debris generated during the cutting process into the dust suction port 212, thereby achieving the purpose of cleaning the debris. In this way, when the upper cutting blade assembly 1 is cutting relative to the lower cutting blade assembly 2 towards the lower cutting blade 22, the blocking assembly 3 can move synchronously towards the lower cutting blade 22, thereby exposing the dust suction port 212. This allows the dust generated in the dust suction groove 211 to be sucked into the dust suction port 212. When the upper cutting blade assembly 1 is resetting relative to the lower cutting blade assembly 2 away from the lower cutting blade 22, the blocking assembly 3 also moves synchronously away from the lower cutting blade 22 to block the dust suction port 212. This prevents the cut electrode sheet 500 from experiencing defects such as misalignment, breakage, or curling due to the suction at the dust suction port 212. This ensures that the cut electrode sheet 500 can be properly conveyed to leave the cutting device, thereby improving the production quality of the electrode sheet 500. In addition, by setting the suction port 212 on the side of the lower cutter 22 away from the upper cutter assembly 1, for example, below the lower cutter 22, the upper cutter assembly 1 can be prevented from blocking the suction port 212 when cutting downwards, so that the suction port 212 cannot suck up the debris located on the outer side of the cutter (the debris generated during cutting is mainly distributed on the outer side of the cutter), thereby improving the suction effect of the suction port 212.

[0030] Optionally, combined Figures 1 to 3 As shown, the shielding assembly 3 includes a connecting rod 31 and a baffle 32. The upper cutter assembly 1 and the baffle 32 are spaced apart along a first set direction and connected by the connecting rod 31. The baffle 32 is used to expose or block the dust suction port 212.

[0031] In this optional embodiment, the upper cutting blade assembly 1 and the stop bar 32 are spaced apart in the vertical direction, the connecting rod 31 can extend in the vertical direction, and the stop bar 32 can extend in the left-right direction (i.e., Figure 1 The connecting rod 31 extends along the Y-axis and is connected at one end to the baffle 32 and at the other end to the upper cutter assembly 1, thus connecting the baffle assembly 3 and the upper cutter assembly 1. The connecting rod 31 is typically connected to the end of the baffle 32 to prevent interference between the connecting rod 31 and the electrode 500 laid between the upper cutter 12 and the lower cutter 22 when the connecting rod 31 moves up and down. The baffle 32 has a long strip structure, and its cross-section can be L-shaped, T-shaped, or rectangular, for example... Figure 4The diagram provides an example of an L-shaped cross-section for the baffle 32. The baffle 32 is located below the upper cutter assembly 1, specifically below the upper cutter 12 of the upper cutter assembly 1, and the baffle 32 and the upper cutter 12 are spaced apart vertically. This allows the electrode sheet 500 to be cut to pass through the cavity formed by the gap between the baffle 32 and the upper cutter 12 and be laid on the conveyor belt, facilitating the transport of the cut electrode sheet 500 to the next workstation. When the upper cutter assembly 1 cuts downwards, the baffle 32 moves downwards simultaneously to expose the dust suction port 212; when the upper cutter assembly 1 returns to its original position, the baffle 32 moves upwards simultaneously to block the dust suction port 212. This achieves the exposure or blocking of the dust suction port 212 by the blocking component 3. Furthermore, using the connecting rod 31 and the baffle 32 as the blocking component 3 simplifies its structure, making it easier to manufacture and reducing production costs.

[0032] Furthermore, combined Figure 1 As shown, there are two connecting rods 31, and each end of the baffle 32 is connected to the upper cutter assembly 1 via a connecting rod 31. This ensures that the baffle 32 is subjected to uniform force, preventing fatigue bending due to uneven force. It also improves the stability of the connection between the shielding assembly 3 and the upper cutter assembly 1, preventing the baffle 32 from vibrating excessively during the operation of the cutting device, thus ensuring that the baffle 32 can better expose or shield the dust suction port 212.

[0033] Optionally, combined Figure 4 As shown, the baffle 32 includes a first baffle 321 and a second baffle 322 that are vertically connected and extend along the length of the lower cutter 22. The second baffle 322 is opposite to and spaced apart from the lower cutter holder 21. The first baffle 321 is connected to one end of the second baffle 322 that is close to the upper cutter assembly 1 along a first set direction and is located on the side of the second baffle 322 facing the lower cutter holder 21. When the upper cutter assembly 1 is in the cutting position, the first baffle 321 is located on the side of the dust suction port 212 that is away from the upper cutter assembly 1 along the first set direction. When the upper cutter assembly 1 is reset, the first baffle 321 is located on the side of the dust suction port 212 that is close to the upper cutter assembly 1 along the first set direction, and the second baffle 322 is opposite to the dust suction port 212.

[0034] Specifically, the first baffle 321 being connected to the second baffle 322 at the end near the upper cutter assembly 1 along the first set direction can be understood as the first baffle 321 being connected to the upper end of the second baffle 322; when the upper cutter assembly 1 is in the cutting position, the first baffle 321 being located on the side of the suction port 212 away from the upper cutter assembly 1 along the first set direction can be understood as the first baffle 321 being located below the suction port 212; when the upper cutter assembly 1 is reset, the first baffle 321 being located on the side of the suction port 212 near the upper cutter assembly 1 along the first set direction can be understood as the first baffle 321 being located above the suction port 212.

[0035] In this optional embodiment, the first baffle plate 321 and the second baffle plate 322 of the baffle strip 32 can be flat plate structures extending in the left-right direction, wherein the first baffle plate 321 is horizontally arranged and the second baffle plate 322 is vertically arranged. When the upper cutter assembly 1 is in the cutting position, both the first baffle plate 321 and the second baffle plate 322 are located below the dust suction port 212; when the upper cutter assembly 1 is reset upward, the first baffle plate 321 is located above the dust suction port 212, and the second baffle plate 322 is located in front of the dust suction port 212 and opposite to the dust suction port 212. In this way, the first baffle plate 321 can be used to block the dust inlet 212 from above, and the second baffle plate 322 can be used to block the dust inlet 212 from the front. This allows the baffle strip 32 to cover the dust inlet 212, preventing the cut electrode sheet 500 from being misaligned, damaged, or rolled up due to the suction force at the dust inlet 212, thereby improving the production quality of the electrode sheet 500. Moreover, by setting the second baffle plate 322 opposite to and spaced apart from the lower cutter holder 21, the baffle strip 32 will not block the dust inlet 212 when it is blocked. This allows the dust inlet 212 to continue to suck up the air below the electrode sheet 500 through the gap between the second baffle plate 322 and the lower cutter holder 21 when the upper cutter 12 is reset, preventing dust in the air from adhering to the surface of the electrode sheet 500 and affecting the production quality of the electrode sheet 500.

[0036] Optionally, combined Figure 5 As shown, the baffle 32 also includes an air guide 323. The first baffle 321 and the second baffle 322 form an opening 324 along one end of the length direction of the lower cutter 22. The air guide 323 is located at the opening 324 and partially blocks the opening 324.

[0037] It should be noted that, due to the lower cutter 22 along... Figure 1 The middle Y-axis direction is extended, therefore the length direction of the lower cutter 22 is... Figure 1 The Y-axis direction, i.e., the left-right direction.

[0038] In this optional embodiment, an air guide 323 is provided at the opening 324 at the end of the baffle 32 to guide the negative pressure airflow at the end of the baffle 32 to the dust suction port 212, thereby improving the dust suction effect. Moreover, by partially blocking the opening 324 with the air guide 323, the dust suction port 212 can suck up and remove dust from the opening 324 of the baffle 32, thereby expanding the dust removal range and further improving the dust removal effect.

[0039] In addition, the baffle 32 has openings 324 at both ends along its length, and air guides 323 are provided at both ends of the baffle 32. This ensures that the negative pressure airflow at both ends of the baffle 32 can be guided to the dust suction port 212 by the corresponding air guides 323.

[0040] Furthermore, combined Figure 5 As shown, the dimensions of the air guide 323 in both the vertical and longitudinal directions are between 1 mm and 3 mm. This ensures that the air guide 323 can partially block the opening 324 of the baffle 32.

[0041] Optionally, combined Figure 4 As shown, when the baffle 32 blocks the dust suction port 212, the distance h1 between the end of the first baffle 321 away from the second baffle 322 along the first set direction and the blade of the lower cutter 22 in the first set direction is between 0.5mm and 3mm.

[0042] Specifically, the end of the first baffle plate 321 that is away from the second baffle plate 322 along the first set direction can be understood as the upper end of the first baffle plate 321, and the distance h1 is the distance between the upper end of the first baffle plate 321 and the blade of the lower cutter 22 along the vertical direction.

[0043] Since the distance between the upper edge of the suction port 212 and the blade of the lower cutter 22 in the vertical direction is usually between 3mm and 10mm, if h1 is set too large, for example, greater than 3mm, the first baffle plate 321 may block the suction port 212, making it impossible for the suction port 212 to continuously generate suction to remove dust from the air around the electrode 500, causing dust in the air to easily adhere to the surface of the electrode 500 and affecting the production quality of the electrode 500; if h1 is set too small, for example, less than 0.5mm, the first baffle plate 321 and the electrode 500 may interfere due to their close proximity, affecting the transmission of the electrode 500. Therefore, in this optional embodiment, by setting h1 between 0.5mm and 3mm, the baffle 32 is prevented from affecting the transmission of the electrode 500, and the first baffle 321 of the baffle 32 is prevented from blocking the dust suction port 212. This ensures that the dust suction port 212 can continue to remove dust from the air around the electrode 500 when the upper cutter 12 is reset, thereby providing a clean air environment for the electrode 500 and improving the production quality of the electrode 500.

[0044] Optionally, combined Figure 4 As shown, the distance h2 between the edge of the suction port 212 near the upper cutter assembly 1 and the blade of the lower cutter 22 in the first set direction is between 3mm and 10mm.

[0045] Specifically, the edge of the suction port 212 near the end of the upper cutter assembly 1 along the first set direction can be understood as the upper edge of the suction port 212, and the distance h2 is the distance between the upper edge of the suction port 212 and the blade of the lower cutter 22 along the vertical direction.

[0046] If h2 is set too large, for example, greater than 10mm, the distance between the suction port 212 and the lower cutter 22 will be too far, affecting the suction effect. If h2 is set too small, for example, less than 3mm, the distance between the suction port 212 and the lower cutter 22 will be too close, requiring a smaller thickness of the lower cutter 22 (i.e., the dimension of the lower cutter 22 in the vertical direction), which in turn results in poor rigidity of the lower cutter 22, making it prone to breakage and other defects during the cutting process. Therefore, in this optional embodiment, h2 is set between 3mm and 10mm to improve the suction effect of the suction port 212 while ensuring that the lower cutter 22 has a certain thickness.

[0047] Optionally, combined Figure 4 As shown, the dust collection groove 211 has a first groove wall 213 and a second groove wall 214 arranged opposite to each other and parallel to each other. The distance d between the first groove wall 213 and the second groove wall 214 constitutes the groove width of the dust collection groove 211, and the value of d is between 0.5mm and 3mm.

[0048] It should be noted that the distance between the first groove wall 213 and the second groove wall 214 near the end of the lower cutter 22 constitutes the suction port 212. Since the first groove wall 213 and the second groove wall 214 are both extended along the length direction (i.e., the left and right direction) of the lower cutter 22, the dimension of the suction groove 211 in the left and right direction is the groove length of the suction groove 211. Correspondingly, the distance d between the first groove wall 213 and the second groove wall 214 is the groove width of the suction groove 211, and the distance between the suction port 212 and the groove wall opposite to the suction port 212 is the groove depth of the suction groove 211.

[0049] If the distance d between the first groove wall 213 and the second groove wall 214 is set too large, that is, the width of the suction groove 211 is set too large, for example, greater than 3mm, the volume of the suction channel will be too large, resulting in more energy consumption when providing the same suction power. If the distance d between the first groove wall 213 and the second groove wall 214 is set too small, that is, the width of the suction groove 211 is set too small, for example, less than 0.5mm, the volume of the suction channel will be too small, which will easily lead to debris clogging the suction port 212. Therefore, in this optional embodiment, by setting the value of d between 0.5mm and 3mm, the risk of debris clogging the suction port 212 is reduced while ensuring economy, thereby improving the suction effect.

[0050] Optionally, combined Figure 4 As shown, one end of the suction groove 211 penetrates the side of the lower cutter holder 21 to form a suction port 212. The suction groove 211 is inclined relative to the set plane along its groove depth direction, and the suction port 212 is located at the end of the suction groove 211 near the lower cutter 22 along the first set direction. The set plane is a plane perpendicular to the first set direction.

[0051] Specifically, since the first set direction represents the vertical direction, the plane perpendicular to the first set direction is a horizontal plane, that is, the set plane is a horizontal plane; correspondingly, the suction port 212 located at the end of the suction groove 211 near the lower cutter 22 along the first set direction can be understood as the suction port 212 being located at the upper end of the suction groove 211. In other words, the suction groove 211 is inclined downwards.

[0052] In practical applications, the upper surface of the lower blade holder 21 can be considered as a horizontal plane. The dust collection groove 211 is inclined relative to the horizontal plane along its depth direction, and the dust collection port 212 is located at the upper end of the dust collection groove 211. This means that the depth direction of the dust collection groove 211 is inclined relative to the upper surface of the lower blade holder 21, and specifically, it is gradually inclined upward (i.e., towards the upper surface of the lower blade holder 21) from the bottom of the groove to the opening (dust collection port 212). Since the debris generated by cutting the electrode sheet 500 is mainly distributed on the outer side of the cutter (i.e., the side away from the blade holder), and the debris moves downward under the influence of gravity, the dust collection groove 211, which is inclined downward, can more effectively capture the debris, thereby improving the dust collection effect.

[0053] Optionally, combined Figure 4 As shown, the tilt angle α of the dust collection groove 211 is between 30° and 60°.

[0054] It should be noted that the tilt angle α of the suction groove 211 is the angle between the suction groove 211 and the horizontal plane, such as... Figure 4 As shown.

[0055] If the tilt angle α of the suction groove 211 is set too large, for example, greater than 60°, the horizontal distance between the plane of the suction groove 211 and the outer side of the cutter will be small. This results in a small horizontal distance between the debris on the outer side of the cutter and the negative pressure airflow at the suction port 212, leading to a small suction coverage area at the suction port 212 and limited debris capture. Conversely, if the tilt angle α of the suction groove 211 is set too small, for example, less than 30°, the horizontal distance between the plane of the suction groove 211 and the outer side of the cutter will be large. This results in a large horizontal distance between the debris on the outer side of the cutter and the negative pressure airflow, making it difficult for the suction at the suction port 212 to effectively capture the debris on the outer side of the cutter. Therefore, in this optional embodiment, by setting the tilt angle α of the suction groove 211 between 30° and 60°, the suction provided by the suction groove 211 to the suction port 212 can effectively capture debris generated during cutting over a larger range, thereby improving the suction effect.

[0056] Optionally, combined Figure 6 As shown, the upper cutter assembly 1 includes an upper cutter 12, an upper cutter holder 11, and an adjustment structure 13. The upper cutter 12 is connected to the upper cutter holder 11 through the adjustment structure 13, and the adjustment structure 13 is used to adjust the preload between the upper cutter 12 and the upper cutter holder 11.

[0057] In this way, the preload between the upper cutter 12 and the upper cutter holder 11 can be adjusted by adjusting the adjustment structure 13 to change the squeezing force of the upper cutter 12 during cutting. This allows the cutting device to adjust the squeezing force during cutting according to the material and thickness of the electrode 500 and the speed of the cutter, thereby making the cutting device suitable for cutting electrode 500 of different sizes and specifications, and thus more versatile.

[0058] In addition, the connecting rod 31 of the shielding component 3 can be connected to the upper blade holder 11 of the upper cutter component 1 or to the upper cutter 12. No specific limitation is made here. In actual application, the connecting rod 31 can be connected to the upper blade holder 11 to avoid setting a connecting structure on the upper cutter 12 to connect with the connecting rod 31, so as not to change the original structure of the upper cutter 12.

[0059] Optionally, combined Figure 6 and Figure 8 As shown, the adjustment structure 13 includes a connector 131 and a spring 132 sleeved outside the connector 131. The upper blade holder 11 and the upper cutter 12 are respectively provided with a first insertion groove 111 and a second insertion groove 121. The connector 131 passes through the first insertion groove 111 and the second insertion groove 121, and the spring 132 is located between the upper blade holder 11 and the upper cutter 12.

[0060] In this optional embodiment, the connector 131 can be a bolt with external threads at both ends. During assembly, one end of the bolt can be threaded into the first insertion slot 111, then the spring 132 can be sleeved on the outside of the bolt, and then the other end of the bolt can be passed through the second insertion slot 121 and tightened with a nut to complete the assembly of the upper blade holder 11 and the upper cutter 12. At this time, the spring 132 is pressed between the upper blade holder 11 and the upper cutter 12, so that the upper cutter 12 and the upper blade holder 11 are relatively fixed while still retaining a certain adjustment displacement. Because the upper cutter 12 is in a high-speed motion state during the cutting process, this slight displacement adjustment not only enables the upper cutter 12 to achieve adaptive cooperation with the lower cutter 22 to always meet the working conditions, but also greatly reduces the risk of defects such as burrs and material loss of the electrode 500 during cutting. At the same time, it can also avoid edge biting caused by the small gap between the blades of the upper and lower cutters, reduce the impact of blade vibration caused by stress change caused by cutting in a very short time, and thus effectively extend the service life of the cutter.

[0061] When it is necessary to adjust the preload between the upper cutter 12 and the upper cutter holder 11, for example, to increase the preload for cutting thicker electrode sheets 500, shims can be added between the upper cutter 12 and the spring 132 or between the upper cutter holder 11 and the spring 132. This increases the compression of the spring 132 without changing the distance between the upper cutter 12 and the upper cutter holder 11, thereby increasing the preload between the upper cutter 12 and the upper cutter holder 11, and thus increasing the squeezing force of the upper cutter 12 during cutting. Conversely, when it is necessary to decrease the preload between the upper cutter 12 and the upper cutter holder 11, only the number of shims needs to be reduced. In this way, the upper cutter assembly 1 can adjust the squeezing force during cutting according to the material and thickness of the electrode sheet 500 and the cutting speed, and the structure is simple and easy to adjust.

[0062] Furthermore, combined Figure 6 As shown, the upper cutter holder 11 has multiple rows and columns of first insertion slots 111, and the upper cutter 12 has multiple rows and columns of second insertion slots 121, with the first insertion slots 111, the second insertion slots 121, and the adjustment structure 13 arranged in a one-to-one correspondence. That is, the upper cutter holder 11 and the upper cutter 12 are connected by the adjustment structure 13 arranged in multiple rows and columns. This improves the connection strength and stability between the upper cutter holder 11 and the upper cutter 12.

[0063] Furthermore, combined Figure 7 As shown, the blade of the upper cutter 12 is inclined relative to the length direction of the upper cutter 12, and the inclination angle θ of the blade of the upper cutter 12 is between 0.5° and 2.5°.

[0064] It should be noted that, due to the upper cutting blade 12 edge Figure 1 The upper cutter 12 is set to extend along the Y-axis, therefore its length direction is... Figure 1 The Y-axis direction is the left-right direction. The blade of the upper cutter 12 is inclined relative to its length direction, which can be understood as the blade of the upper cutter 12 forming an angle with the Y-axis direction, and this angle is between 0.5° and 2.5°.

[0065] In this way, by tilting the blade of the upper cutter 12, the instantaneous vertical impact cutting when the upper cutter 12 cuts downward is transformed into a gradual and continuous progressive shearing. This not only makes it easier to cut the electrode 500, but also reduces debris, ensures a smooth cut, reduces the risk of burrs on the electrode 500, and thus improves the production quality of the electrode 500.

[0066] Furthermore, if the inclination angle θ of the upper cutting blade 12 is set too large, for example, greater than 2.5°, it may cause the upper cutting blade 12 to "push" the electrode 500 away when cutting downwards, affecting the cutting quality. If θ is set too small, for example, less than 0.5°, the entire cutting edge of the upper cutting blade 12 will almost simultaneously contact the electrode 500, requiring a huge instantaneous impact force to overcome the material's full shear strength, resulting in a large instantaneous cutting force and easy damage to the cutting blade. Therefore, by setting the inclination angle θ of the upper cutting blade 12 to between 0.5° and 2.5°, the instantaneous cutting force is reduced and the cutting quality is improved.

[0067] A battery production line according to an embodiment of the present invention includes an electrode cutting device as described above.

[0068] The beneficial effects of the battery production line in this embodiment are the same as those of the electrode cutting device described above, and will not be repeated here.

[0069] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.

Claims

1. An electrode cutting device, characterized in that, It includes an upper cutter assembly (1), a lower cutter assembly (2) and a shielding assembly (3). The upper cutter assembly (1) is used to reciprocate relative to the lower cutter assembly (2) in a first set direction. The shielding assembly (3) is located on one side of the lower cutter assembly (2) in a second set direction and is connected to the upper cutter assembly (1). The lower cutter assembly (2) includes a lower cutter seat (21) and a lower cutter (22) disposed on the lower cutter seat (21). The lower cutter seat (21) is provided with a dust suction groove (211) and a dust suction port (212) that are interconnected. The dust suction port (212) is located on the side of the lower cutter seat (21) near the shielding assembly (3) and on the side of the lower cutter (22) away from the upper cutter assembly (1). The dust suction groove (211) is used to provide suction to the dust suction port (212). The shielding component (3) is used to expose the suction port (212) when the upper cutting blade assembly (1) cuts relative to the lower cutting blade assembly (2) in a direction close to the lower cutting blade (22), and to shield the suction port (212) when the upper cutting blade assembly (1) resets relative to the lower cutting blade assembly (2) in a direction away from the lower cutting blade (22); wherein the first setting direction and the second setting direction are perpendicular to each other and are respectively perpendicular to the extension direction of the blade of the lower cutting blade (22).

2. The electrode cutting device according to claim 1, characterized in that, The shielding assembly (3) includes a connecting rod (31) and a baffle (32). The upper cutter assembly (1) and the baffle (32) are spaced apart along the first set direction and connected by the connecting rod (31). The baffle (32) is used to expose or block the dust suction port (212).

3. The electrode cutting device according to claim 2, characterized in that, The baffle (32) includes a first baffle (321) and a second baffle (322) that are vertically connected and extend along the length of the lower cutter. The second baffle (322) is opposite to and spaced apart from the lower cutter seat (21). The first baffle (321) is connected to one end of the second baffle (322) that is close to the upper cutter assembly (1) along the first set direction and is located on the side of the second baffle (322) facing the lower cutter seat (21). When the upper cutter assembly (1) is in the cutting position, the first baffle (321) is located on the side of the dust suction port (212) that is away from the upper cutter assembly (1) along the first set direction. When the upper cutter assembly (1) is reset, the first baffle (321) is located on the side of the dust suction port (212) that is close to the upper cutter assembly (1) along the first set direction, and the second baffle (322) is opposite to the dust suction port (212).

4. The electrode cutting device according to claim 3, characterized in that, The baffle (32) also includes an air guide (323). The first baffle (321) and the second baffle (322) form an opening (324) along one end of the length direction of the lower cutter (22). The air guide (323) is located at the opening (324) and partially blocks the opening (324).

5. The electrode cutting device according to claim 3, characterized in that, When the baffle (32) blocks the dust inlet (212), the distance h1 between the end of the first baffle (321) away from the second baffle (322) along the first set direction and the blade of the lower cutter (22) in the first set direction is between 0.5mm and 3mm. And / or, the distance h2 between the edge of the suction port (212) near the end of the upper cutter assembly (1) and the blade of the lower cutter (22) in the first set direction is between 3 mm and 10 mm. And / or, the dust collection groove (211) has a first groove wall (213) and a second groove wall (214) arranged opposite to each other and parallel to each other. The distance d between the first groove wall (213) and the second groove wall (214) constitutes the groove width of the dust collection groove (211), and the value of d is between 0.5mm and 3mm.

6. The electrode cutting device according to claim 1, characterized in that, One end of the suction groove (211) extends through the side of the lower blade holder (21) to form the suction port (212). The suction groove (211) is inclined relative to the set plane along its groove depth direction, and the suction port (212) is located at one end of the suction groove (211) near the lower cutter (22) along the first set direction. The set plane is a plane perpendicular to the first set direction.

7. The electrode cutting device according to claim 6, characterized in that, The tilt angle α of the dust collection groove (211) is between 30° and 60°.

8. The electrode cutting device according to claim 1, characterized in that, The upper cutter assembly (1) includes an upper cutter holder (11), an upper cutter (12), and an adjustment structure (13). The upper cutter (12) is connected to the upper cutter holder (11) through the adjustment structure (13). The adjustment structure (13) is used to adjust the preload between the upper cutter (12) and the upper cutter holder (11).

9. The electrode cutting device according to claim 8, characterized in that, The adjustment structure (13) includes a connector (131) and a spring (132) sleeved on the connector (131). The upper cutter (12) and the upper cutter holder (11) are respectively provided with a first insertion groove (111) and a second insertion groove (121). The connector (131) passes through the first insertion groove (111) and the second insertion groove (121), and the spring (132) is located between the upper cutter (12) and the upper cutter holder (11).

10. A battery production line, characterized in that, Includes the electrode cutting device as described in any one of claims 1 to 9.

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