A pole piece die cutting device

Abstract

The application discloses an electrode piece die-cutting device, which cuts an electrode strip by a movable cutter die-cutting piece to obtain an electrode piece with a predetermined shape, and then removes burrs and metal deformation from the edge of the electrode piece with the predetermined shape by a laser trimming piece. The cutter die-cuting piece and the laser trimming piece are combined to produce an electrode piece with an electrode lug, which does not affect the production efficiency of the electrode piece with the electrode lug on the one hand, and removes burrs and metal deformation from the edge of the electrode piece with the electrode lug on the other hand, so that the edge of the electrode piece with the electrode lug is more neat, the risk of burrs piercing a battery isolation film is avoided, and the safety performance of the battery is improved. In addition, the carrying table is also provided with a laser position calibration part, which calibrates the position of the laser trimming piece in space before the cutting of the cutter die-cutting piece, so that the laser trimming piece is ensured to be in a preset position, and the effect of removing burrs and metal deformation is affected due to the misalignment of the laser trimming piece.

Description

Technical Field

[0001] This utility model generally relates to the field of battery technology, and in particular to an electrode die-cutting device. Background Technology

[0002] Die-cutting is a crucial step in lithium battery manufacturing, used to cut electrode strips to form electrodes with tabs.

[0003] In related technologies, metal die punching or laser cutting are used. Metal die punching has high production efficiency, but the stamping process may generate large stress, which may have a certain impact on the electrode sheet; there may be small burrs and metal deformation on the cutting edge; laser cutting has no mechanical stress, causes little damage to the electrode sheet, and has high cutting precision, but it has the problem of low cutting efficiency, making it difficult to use for mass production. Utility Model Content

[0004] This utility model provides an electrode die-cutting device, including: a die-cutting part, a laser trimming part, and a support platform.

[0005] A die-cutting component is used to cut electrode strips to obtain electrode sheets of a predetermined shape; a laser trimming component is used to trim the outer edge of the electrode sheet with a laser to at least remove burrs from the outer edge of the electrode sheet. A support platform is located below the die-cutting component and the laser trimming component. The support platform is provided with a laser position calibration section, and in the horizontal orthographic projection of the support platform, the edge line of the laser position calibration section is arranged along at least a portion of the edge line of the die-cutting component.

[0006] The cutting die is movable and has a cutting position and a avoidance position. When the cutting die is in the avoidance position, the cutting die is positioned away from the electrode of the predetermined shape to avoid blocking the laser from the laser trimming part that is directed toward the outer edge of the electrode.

[0007] As an implementation method, the cutting die reciprocates in the vertical direction, the cutting die is provided with a clearance hole extending in the vertical direction, and the laser emitting part of the laser trimming part is located within the boundary range of the orthographic projection of the clearance hole.

[0008] As an alternative implementation, when the die-cutting part is in the avoidance position, the laser emission part is located below the die-cutting part.

[0009] As an implementation method, the laser position calibration unit includes a calibration groove disposed on the side of the support platform facing the laser trimming part, wherein the calibration groove is a groove disposed intermittently or a groove disposed continuously. In the horizontal orthographic projection of the support platform, the edge line of the die-cut part is located within the area enclosed by the calibration groove, and the inner edge of the calibration groove is the edge line of the laser position calibration part.

[0010] As an alternative implementation, the support platform further includes an adsorption area with multiple adsorption holes. An adsorption auxiliary component is sealed and connected below the adsorption area. The adsorption auxiliary component has an adsorption cavity with a shape that is larger at the top and smaller at the bottom. Each of the adsorption holes communicates with the adsorption cavity. The calibration groove surrounds the adsorption area.

[0011] In one possible implementation, the electrode includes a main body and an electrode tab located on one side of the main body. The electrode die-cutting apparatus further includes a dust removal mechanism located above the support platform, and the dust removal mechanism has a suction port at least along a portion of the main body.

[0012] As one possible implementation, the dust removal mechanism includes a circumferentially enclosed body, the orthographic projection of which surrounds the electrode on the support platform, and the dust suction port is opened on the lower side of the circumferentially enclosed body.

[0013] As an alternative implementation, the dust removal mechanism further includes a fan assembly and a collection container. The fan assembly includes a fan hood and a fan disposed inside the fan hood. Pollutants entering the dust suction port are collected in the collection container by the fan.

[0014] As an implementation method, the laser trimming part is trimmed and cut using nanosecond, picosecond, or femtosecond lasers in the infrared, green, or ultraviolet bands; the laser power W of the laser trimming part and the cutting speed V of the laser trimming part are 0.02≤W / V≤0.25.

[0015] As an alternative implementation, an unwinding mechanism and a winding mechanism are also included, wherein the unwinding mechanism includes an unwinding roller and the winding mechanism includes a winding roller, and at least one of the unwinding roller and the winding roller is covered with antistatic rubber on its side.

[0016] In the above-described scheme, this application first uses a moving die-cutting component to cut the electrode strip to obtain an electrode sheet of a predetermined shape, and then uses a laser trimming component to remove burrs and metal deformation from the edges of the electrode sheet of the predetermined shape. The combination of the die-cutting component and the laser trimming component produces electrode sheets with tabs. On the one hand, this does not affect the production efficiency of electrode sheets with tabs; on the other hand, the laser removes burrs and metal deformation from the edges of the electrode sheets with tabs, resulting in cleaner edges and avoiding the risk of burrs piercing the battery separator, thus improving battery safety. Furthermore, a laser position calibration unit is provided on the support platform. Before the die-cutting component cuts, the laser position calibration unit calibrates the spatial position of the laser trimming component to ensure that it is in the preset position, avoiding any impact on the vaporization of burrs and metal deformation due to inaccuracy of the laser trimming component. Attached Figure Description

[0017] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is an isometric schematic diagram of the electrode die-cutting device provided in an embodiment of the present invention; Figure 2 An exploded view of the electrode die-cutting device provided in this embodiment of the utility model; Figure 3 A schematic diagram showing the connection between the die-cutting part and the laser-trimmed part provided in this embodiment of the utility model; Figure 4 This is a schematic diagram of the dust removal mechanism provided in an embodiment of the present utility model; Figure 5 This is a top view of the support platform provided in an embodiment of the present utility model; 10 die-cut parts, 20 laser-trimmed parts, and 30 linear telescopic parts; Support platform 40, adsorption area 41, adsorption hole 411, laser position calibration unit 42, adsorption auxiliary component 43, vacuum assembly 44; Dust removal mechanism 50, circumferentially enclosed body 51, dust suction port 511, fan assembly 54, fan cover 541, fan 542, fan mounting plate 543, fan mounting hole 5431, collection container 55; Unwinding mechanism 61, winding mechanism 62, antistatic rubber 70. Detailed Implementation

[0018] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] The electrode strip includes a current collector and an active material layer. The current collector has a coated area with the active material layer and an uncoated area along the width of the electrode strip. Tabs are cut into the uncoated current collector to enable charging and discharging of the electrode assembly. The current collector can be a metal foil, such as copper foil or aluminum foil.

[0021] The manufacturing process of electrode sheets includes a die-cutting step, which involves using a die-cutting device to cut tabs into the uncoated area of ​​the electrode sheet. When cutting the uncoated area of ​​the electrode strip, the die-cutting device typically uses cutting parts, including laser cutting parts and blade cutting parts. Both metal die-cutting and laser cutting are used. Metal die-cutting offers high production efficiency, but the stamping process can generate significant stress, causing some impact on the electrode sheet; the cut edges may have microburrs and metal deformation. Laser cutting has no mechanical stress, causes minimal damage to the electrode sheet, and offers high cutting precision, but it suffers from low cutting efficiency, making it difficult to use for mass production.

[0022] Based on this, this application proposes an electrode die-cutting apparatus, which includes a cutting die-cutting component 10 and a laser trimming component 20. The cutting die-cutting component 10 cuts the electrode strip to obtain an electrode sheet of a predetermined shape, and the laser trimming component 20 treats the small burrs or metal deformations on the edge of the electrode sheet of the predetermined shape by vaporizing the burrs and metal deformations with a pulsed laser to eliminate the risk of short circuits. At the same time, it does not affect the production efficiency of electrode sheets with tabs and is conducive to mass production.

[0023] Among them, such as Figures 1-5 As shown, the electrode die-cutting apparatus includes: a die-cutting component 10, a laser trimming component 20, and a support platform 40. The die-cutting component 10 is used to cut electrode strips to obtain electrode sheets of a predetermined shape; the laser trimming component 20 is used to perform laser trimming on the outer edge of the electrode sheet to at least remove burrs from the outer edge of the electrode sheet; the support platform 40 is located below the die-cutting component 10 and the laser trimming component 20, and the support platform 40 is provided with a laser position calibration section 42. In the horizontal orthographic projection of the support platform 40, the edge line of the laser position calibration section 42 is arranged along at least a portion of the edge line of the die-cutting component 10.

[0024] In detail, such as Figure 1 and Figure 2As shown, an unwinding mechanism 61 is provided on the left side of the support platform 40, and a winding mechanism 62 is provided on the right side of the support platform 40. The unwinding mechanism 61 includes an unwinding roller on which electrode strip is wound, and the unwinding roller rotates to output the electrode strip; the winding mechanism 62 includes a winding roller for winding the remaining portion of the electrode strip, which is the material remaining after cutting the electrode with tabs. The unwinding roller and the winding roller work together, and the electrode strip passes through the support platform 40 from left to right, which helps the die-cutting part 10 to cut continuously.

[0025] like Figure 2 and Figure 5 As shown, an adsorption area 41 is provided on the support platform 40, and the shape of the adsorption area 41 matches the shape of the electrode sheet with tabs. Several adsorption holes 411 are formed in the adsorption area 41, arranged in a rectangular or circular array. The electrode sheet with tabs includes a main body and a tab portion located on one side of the main body. The adsorption area 41 includes a first part and a second part, the first part corresponding to the main body and the tab portion corresponding to the second part. Several adsorption holes 411 are provided in the first part and the second part. The adsorption holes 411 adsorb the electrode sheet to be cut through a vacuum assembly 44, and the adsorption holes 411 and the vacuum assembly 44 form an adsorption mechanism. This configuration allows the adsorption force to be evenly distributed throughout the adsorption area 41, maximizing the adsorption of the electrode sheet material and helping to keep the electrode sheet material stationary or fixed during cutting.

[0026] A die-cutting part 10 and a laser trimming part 20 are provided above the support platform 40. The laser trimming part 20 is stationary relative to the support platform 40, and there is a preset distance between the laser trimming part 20 and the support platform 40. The preset distance can be selected by those skilled in the art according to the design, and this embodiment does not limit it.

[0027] The die-cutting part 10 moves relative to the support table 40 and has a cutting position and a clearance position. When the die-cutting part 10 is in the cutting position, it punches and cuts the electrode strip to form an electrode of a predetermined shape. When the die-cutting part 10 is in the clearance position, it is positioned away from the electrode of the predetermined shape to avoid blocking the laser from the laser trimming part 20 that is directed toward the outer edge of the electrode.

[0028] The cutting position and the avoidance position can form a straight line trajectory or a broken line trajectory.

[0029] For example, such as Figure 3As shown, the movable end of the linear telescopic component 30 is connected to the cutting die component 10, which reciprocates in the vertical direction to form a linear trajectory. The laser trimming component 20 and the cutting die component 10 are approximately equal in height in the vertical direction. The cutting die component 10 is provided with a clearance hole 11 extending in the vertical direction, and the laser emission part of the laser trimming component 20 is located within the boundary range of the orthographic projection of the clearance hole 11.

[0030] When the die-cutting part 10 is in the clearance position, the laser trimming part 20 is located inside the clearance hole 11, and the laser emission part of the laser trimming part 20 is located below the die-cutting part 10. At this moment, the laser emitted from the laser emission part of the laser trimming part 20 is not blocked or affected by the die-cutting part 10. When the die-cutting part 10 switches from the clearance position to the cutting position, the die-cutting part 10 moves downward and approaches the support table 40 until the stamped and cut electrode strip is an electrode with tabs.

[0031] The reciprocating motion of the die-cutting part 10 in the vertical direction helps to shorten the cutting trajectory of the die-cutting part 10, shorten the time of the entire cutting cycle, and thus improve cutting efficiency. The laser trimming part 20 is approximately the same height as the die-cutting part 10 in the vertical direction, which helps to reduce the overall height of the electrode die-cutting device and avoid the device occupying too much space.

[0032] Of course, it is understandable that in another embodiment, the cutting die 10 reciprocates vertically to form a straight trajectory. The laser trimming component 20 and the cutting die 10 can be arranged vertically, with the laser trimming component 20 positioned above the cutting die 10. The cutting die 10 has a vertically extending clearance hole 11, the cross-section of which gradually increases from top to bottom, and the clearance hole 11 is a conical hole. When the cutting die 10 is in the clearance position, the laser emitted from the laser emitting part of the laser trimming component 20 will not be blocked or affected by the inner wall of the clearance hole 11. Alternatively, In another embodiment, the cutting die 10 and the laser trimming part 20 can be arranged vertically, with the cutting die 10 positioned above the laser trimming part 20. The cutting die 10 has a clearance hole 11 extending vertically. The laser trimming part 20 is projected orthographically onto the cutting die 10, and the projection of the laser trimming part 20 is completely within the clearance hole 11. A preset gap exists between the projection outline of the laser trimming part 20 and the outline of the clearance hole 11. When the cutting die 10 switches from the clearance position to the cutting position, the cutting die 10 moves downward through the laser trimming part 20 until the stamped and cut electrode strip is an electrode with tabs.

[0033] The laser trimming part 20 uses nanosecond, picosecond, or femtosecond lasers in the infrared, green, or ultraviolet bands for trimming and cutting. Picosecond pulses induce plasma micro-detonation, completely vaporizing burrs and metal deformation at the edges of the predetermined-shaped electrode sheet; nanosecond pulses achieve thermal evaporation to remove burrs and metal deformation from the edges of the predetermined-shaped electrode sheet, preventing the coating on the predetermined-shaped electrode sheet from peeling off. Femtosecond laser trimming and cutting avoids heat accumulation on the predetermined-shaped electrode sheet, which could affect the coating on the electrode sheet.

[0034] The laser power W of the laser trimming part 20 and the cutting speed V of the laser trimming part 20 are 0.02≤W / V≤0.25.

[0035] It should be noted that, considering the energy and spot area required to remove burrs or deform metal, a laser power between 40W and 500W is selected. This can vaporize burrs and deform metal while avoiding the risk of puncture.

[0036] In practical applications, if the cutting speed of the laser trimming part 20 is too fast, it will affect the effect of vaporizing burrs and deforming metal; if the cutting speed of the laser trimming part 20 is too slow, it will affect production efficiency. Based on this, this embodiment selects a cutting speed V of the laser trimming part 20 between 2000mm / s and 20000mm / s to balance the removal effect and production efficiency.

[0037] Among them, such as Figure 5 As shown, the support platform 40 is also equipped with a laser position calibration unit 42. In the horizontal orthographic projection of the support platform 40, the edge line of the laser position calibration unit 42 is set along at least part of the edge line of the die-cutting part 10. Before the die-cutting part 10 is cut, the laser position calibration unit 42 is used to calibrate the position of the laser trimming part 20 in space to ensure that the laser trimming part 20 is in a preset position, so as to avoid affecting the vaporization of burrs and metal deformation due to the inaccuracy of the laser trimming part 20.

[0038] In summary, this application first uses a moving die cutter 10 to cut the electrode strip to obtain an electrode sheet of a predetermined shape, and then uses a laser trimming device 20 to remove burrs and metal deformation from the edges of the electrode sheet of the predetermined shape. The die cutter 10 and the laser trimming device 20 are combined to produce electrode sheets with tabs. On the one hand, this does not affect the production efficiency of electrode sheets with tabs; on the other hand, the laser can remove burrs and metal deformation from the edges of the electrode sheets with tabs within 0.03s, with the burrs controlled within 1μm. This makes the edges of the electrode sheets with tabs cleaner, avoiding the risk of burrs piercing the battery separator and improving the battery's safety performance. In addition, the support stage 40 is also equipped with a laser position calibration unit 42. Before the die cutter 10 cuts, the laser position calibration unit 42 calibrates the spatial position of the laser trimming device 20 to ensure that the laser trimming device 20 is in the preset position, avoiding the effect of vaporizing burrs and metal deformation due to the inaccuracy of the laser trimming device 20.

[0039] The laser position calibration unit 42 includes a calibration groove disposed on the side of the support platform 40 facing the laser trimming part 20. The calibration groove is a groove that is intermittently spaced or continuously disposed. In the horizontal orthographic projection of the support platform 40, the edge line of the cutter die 10 is located within the range enclosed by the calibration groove, and the inner edge of the calibration groove is the edge line of the laser position calibration unit 42.

[0040] like Figure 5 As shown, the support platform 40 is provided with an adsorption area 41, and a calibration groove is provided on the outer periphery of the adsorption area 41, surrounding the adsorption area 41. The calibration groove includes an inner annular contour 421 and an outer annular contour 422. The orthographic projection of the die-cutting part 10 onto the support platform 40 coincides with the inner annular contour 421. At the same time, the contour of the adsorption area 41 coincides with the inner annular contour 421. In this way, the electrode burrs or metal deformations of the predetermined shape are located between the inner annular contour 421 and the outer annular contour 422, and the laser emitted by the laser emitting part of the laser trimming part 20 is also located between the inner annular contour 421 and the outer annular contour 422, which helps to ensure the removal effect of burrs and metal deformations.

[0041] It should be noted that the distance between the inner annular contour 421 and the outer annular contour 422 can be adjusted by those skilled in the art according to the actual situation, and this embodiment does not impose any restrictions.

[0042] The adsorption zone 41 is sealed below an adsorption auxiliary component 43. The adsorption auxiliary component 43 is provided with an adsorption cavity, which is larger at the top and smaller at the bottom. Each adsorption hole 411 is connected to the adsorption cavity.

[0043] like Figure 2As shown, the adsorption zone 41 is configured as an adsorption plate with several adsorption holes 411. An adsorption auxiliary component 43 is located below the adsorption plate, and the adsorption auxiliary component 43 has an adsorption cavity. The adsorption cavity is shaped like a cone, with a larger upper section and a smaller lower section. The adsorption plate covers the upper opening of the adsorption cavity, and the two are sealed together. The lower opening of the adsorption cavity is connected to the vacuum assembly 44 via a connecting pipe. The adsorption cavity causes a Venturi effect when the airflow passes through, forming a gradient negative pressure field in the adsorption zone 41 with strong adsorption at the center and weak adsorption at the edges. This helps the electrode strip remain stationary or fixed during cutting.

[0044] The electrode sheet with tabs includes a main body and a tab portion located on one side of the main body. The electrode sheet die-cutting device also includes a dust removal mechanism 50, which is located above the support table 40, and the dust removal mechanism 50 has a dust suction port 511 at least along a portion of the main body.

[0045] like Figure 2 and Figure 4 As shown, the dust removal mechanism 50 includes a circumferentially enclosed body 51 and a support base. The shape of the circumferentially enclosed body 51 matches the shape of the electrode tab with electrode plates. The support base positions the circumferentially enclosed body 51 above the support platform 40. The distance between the circumferentially enclosed body 51 and the adsorption area 41 is d1, where 3mm ≤ d1 ≤ 10mm.

[0046] The orthographic projection of the circumferentially enclosed body 51 on the support platform 40 surrounds the adsorption area 41. The circumferentially enclosed body 51 has a dust suction port 511. Several dust suction ports 511 are arranged along the circumference of the circumferentially enclosed body 51, and the dust suction ports 511 are set towards the calibration groove outside the adsorption area 41.

[0047] The dust removal mechanism 50 can remove contaminants on the cutting path, thereby reducing contaminants or impurities around the electrode strip, reducing pollution to the electrode strip, electrode die-cutting device and the surrounding environment, and preventing contaminants or impurities from affecting the cutting accuracy of the electrode die-cutting device.

[0048] In addition, the dust removal mechanism 50 also includes a fan assembly 54 and a collection container 55. The fan assembly 54 includes a fan cover 541 and a fan 542 disposed inside the fan cover 541. The material entering the dust suction port 511 is collected in the collection container 55 by the fan 542.

[0049] like Figure 4As shown, the fan assembly 54 includes a fan cover 541, a fan 542, and a fan mounting plate 543. The fan mounting plate 543 is located inside the fan cover 541 and has a fan mounting hole 5431 on it. The fan 542 is mounted in the fan mounting hole 5431. The circumferentially enclosed body 51 is connected to the fan cover 541 of the fan assembly 54 via a flexible connecting pipe 52. A protective cover 53 is installed at one of the opposite openings of the fan cover 541, and the flexible connecting pipe 52 is located inside the protective cover 53. A collection container 55 is installed at the other opposite opening of the fan cover 541. Pollutants entering the dust suction port 511 quickly enter the collection container 55 with the assistance of the fan 542, avoiding secondary pollution of the pollutants.

[0050] It should be noted that the fan cover 541 and the collection container 55 are detachably connected. For example, the open end face of the fan cover 541 is provided with an annular magnetic groove, and the collection container 55 is embedded with a magnetic strip that matches the annular magnetic groove. This makes it easy to detach the fan cover 541 and the collection container 55, which helps to clean the pollutants in the container regularly.

[0051] The unwinding mechanism 61 includes an unwinding roller, and the winding mechanism 62 includes a winding roller. At least one of the unwinding roller and the winding roller is covered with antistatic rubber 70 on one side.

[0052] It should be noted that charged electrode strips easily attract environmental dust, contaminating them. At least one of the unwinding and take-up rollers is covered with antistatic rubber 70 on its side to eliminate electrostatic adsorption interference during electrode strip transport and prevent contamination.

[0053] It should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" used above to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "frame" and "layout" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "frame" or "layout" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0054] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An electrode die-cutting device, characterized in that, include: The die-cutting part (10) is used to cut electrode strips to obtain electrode sheets of a predetermined shape; A laser trimming component (20) is used to laser trim the outer edge of the electrode sheet to at least remove burrs from the outer edge of the electrode sheet. A support platform (40) is located below the cutting die (10) and the laser trimming part (20). The support platform (40) is provided with a laser position calibration part (42). In the horizontal orthographic projection of the support platform (40), the edge line of the laser position calibration part (42) is arranged along at least part of the edge line of the cutting die (10). The cutting die (10) is movable and has a cutting position and a avoidance position. When the cutting die (10) is in the avoidance position, the cutting die (10) is set away from the electrode of the predetermined shape to avoid blocking the laser from the laser trimming part (20) directed toward the outer edge of the electrode.

2. The electrode die-cutting apparatus according to claim 1, characterized in that, The cutting die (10) reciprocates in the vertical direction. The cutting die (10) is provided with a clearance hole (11) extending in the vertical direction, and the laser emitting part of the laser trimming part (20) is located within the boundary range of the orthographic projection of the clearance hole (11).

3. The electrode die-cutting apparatus according to claim 2, characterized in that, When the cutting die (10) is in the avoidance position, the laser emission part is located below the cutting die (10).

4. The electrode die-cutting apparatus according to claim 1, characterized in that, The laser position calibration unit (42) includes a calibration groove disposed on the side of the support platform (40) facing the laser trimming part (20), wherein the calibration groove is a groove disposed intermittently or a groove disposed continuously; In the horizontal orthographic projection of the support platform (40), the edge of the cutter die (10) is located within the area enclosed by the calibration groove, and the inner edge of the calibration groove is the edge of the laser position calibration part (42).

5. The electrode die-cutting apparatus according to claim 4, characterized in that, The support platform (40) also includes an adsorption area (41), which is provided with a plurality of adsorption holes (411). An adsorption auxiliary component (43) is sealed and connected below the adsorption area (41). The adsorption auxiliary component (43) is provided with an adsorption cavity. The adsorption cavity is shaped with a larger top and a smaller bottom. Each of the adsorption holes (411) is connected to the adsorption cavity. The calibration groove surrounds the adsorption area (41).

6. The electrode die-cutting apparatus according to claim 1, characterized in that, The electrode includes a main body and an electrode tab located on one side of the main body. The electrode die-cutting device also includes a dust removal mechanism (50), which is located above the support platform (40) and has a dust suction port (511) at least along a portion of the main body.

7. The electrode die-cutting apparatus according to claim 6, characterized in that, The dust removal mechanism (50) includes a circumferentially enclosed body (51), the orthographic projection of the circumferentially enclosed body (51) on the support platform (40) surrounds the electrode, and the dust suction port (511) is opened on the lower side of the circumferentially enclosed body (51).

8. The electrode die-cutting apparatus according to claim 6, characterized in that, The dust removal mechanism (50) also includes a fan assembly (54) and a collection container (55). The fan assembly (54) includes a fan cover (541) and a fan (542) disposed inside the fan cover (541). Pollutants entering the dust suction port (511) are collected in the collection container (55) by the fan (542).

9. The electrode die-cutting apparatus according to any one of claims 1-8, characterized in that, The laser trimming part (20) is trimmed and cut using nanosecond, picosecond, or femtosecond lasers in the infrared, green, or ultraviolet bands; the laser power W of the laser trimming part (20) and the cutting speed V of the laser trimming part (20) are 0.02≤W / V≤0.

25.

10. The electrode die-cutting apparatus according to any one of claims 1-8, characterized in that, It also includes an unwinding mechanism (61) and a winding mechanism (62), the unwinding mechanism (61) including an unwinding roller, the winding mechanism (62) including a winding roller, and at least one of the unwinding roller and the winding roller having an antistatic rubber (70) side-covered.

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