Battery pole piece laser cutting device

Abstract

The utility model relates to battery manufacturing technical field discloses a kind of battery pole piece laser cutting device, comprising: material roller subassembly, including upper transmission roller, lower transmission roller and front press roller, upper transmission roller and lower transmission roller are used to convey battery pole piece, and cutting position is formed between the two, and upper transmission roller and lower transmission roller are all used to abut the reverse of battery pole piece, and front press roller is used to abut the front of battery pole piece, and close to being set in the upper of cutting position;Laser generator is set in the side close to material roller subassembly, and laser beam emitted by laser generator is directly opposite cutting position;And material removing subassembly is set in the below of the material roller subassembly, and close to the cutting position, for collecting the waste generated after battery pole piece cutting.The utility model is realized by the abutment mode of three places of material roller subassembly, and battery pole piece shaking caused by laser cutting impact can be effectively inhibited.

Description

Technical Field

[0001] This utility model belongs to the field of battery manufacturing technology, specifically relating to a battery electrode laser cutting device. Background Technology

[0002] In the battery cell manufacturing process, the cutting of the electrode sheet is a crucial step that directly affects the quality of the subsequently formed electrode tabs, and thus has a decisive impact on the electrochemical performance and assembly precision of the battery cell.

[0003] Currently, existing laser cutting equipment requires a reserved channel for the laser beam to pass through, and the upper and lower pressure rollers are spaced a certain distance apart, forming a suspended area for the electrode. When the laser acts on the electrode in this suspended area, the energy generated by the laser cutting causes the electrode to vibrate. This vibration directly reduces the positional accuracy of the laser cutting and also affects the smoothness of the cut, thus reducing the processing quality of the electrode tab. Utility Model Content

[0004] To address the shortcomings of the prior art, this utility model provides a battery electrode laser cutting device. Its material roller assembly adopts a three-point contact method, which can effectively suppress the vibration of the battery electrode caused by the impact of laser cutting. Furthermore, by setting up a material removal component, it can achieve the function of self-cleaning and collecting waste materials after cutting.

[0005] The technical effects to be achieved by this utility model are realized through the following aspects: This utility model provides a laser cutting device for battery electrodes, comprising: The material roller assembly includes an upper drive roller, a lower drive roller, and a front pressure roller. The upper drive roller and the lower drive roller are used to convey battery electrode sheets and form a cutting position between them. The upper drive roller and the lower drive roller are both used to abut the back of the battery electrode sheet. The front pressure roller is used to abut the front of the battery electrode sheet and is positioned close to and above the cutting position. A laser generator is positioned on one side near the material roller assembly, and the laser beam emitted by the laser generator is directed directly at the cutting position; and The material removal component is located below the material roller assembly and near the cutting position, and is used to collect the waste generated after the battery electrode is cut.

[0006] In some implementations, the material roller assembly further includes an upper support roller and a lower support roller, both of which are disposed within the cutting position and are used to abut against the reverse side of the battery electrode sheet.

[0007] In some implementations, the upper roller and the lower roller are both mounted on the same support frame, so that the battery electrode between the upper roller and the lower roller forms a laser cutting plane perpendicular to the emission direction of the laser beam.

[0008] In some implementations, the contact surfaces of the upper roller, the lower roller, and the front pressure roller are all coated with an anti-sticking layer.

[0009] In some implementations, the horizontal distance between the upper roller, the lower roller and the laser generator is less than the horizontal distance between the upper drive roller, the lower drive roller and the laser generator.

[0010] In some implementations, the front pressure roller is located on the side close to the upper support roller.

[0011] In some implementations, the material removal assembly includes an adsorption mechanism and a waste collection mechanism, wherein the adsorption mechanism is used to transfer the waste generated at the cutting position to the waste collection mechanism; The adsorption mechanism includes an adsorption belt and a drive component for driving the adsorption belt to operate. The adsorption belt is provided with a plurality of adsorption holes, and a negative pressure cavity communicating with a negative pressure source is provided on the inner side of the adsorption belt. The adsorption holes are in communication with the negative pressure cavity.

[0012] In some implementations, the adsorption mechanism is sealed by a sealing plate to form the negative pressure cavity, and a strip-shaped vent is provided on the sealing plate near the side of the adsorption belt, the strip-shaped vent corresponding to the position of the adsorption hole.

[0013] In some implementations, a cleaning component is also included, which is disposed on one side of the material roller assembly and includes an air knife facing the periphery of the front pressure roller.

[0014] In some implementations, a connecting plate is also included, which is used to carry and connect the material removal component and the cleaning component; The connecting plate is provided with a guide block, and the front pressure roller is mounted on the guide block for adjusting the direction of the front pressure roller.

[0015] In summary, this utility model has at least the following advantages: This utility model provides a laser cutting device for battery electrodes. Through a material roller assembly, it employs a three-point contact method involving an upper drive roller, a lower drive roller, and a front pressure roller. This ensures that the battery electrodes maintain a certain tension during the cutting process, and the front pressure roller provides stable clamping force from the front of the electrode, effectively suppressing electrode vibration caused by laser cutting impact. Furthermore, the waste generated during battery electrode cutting can be uniformly collected and processed by a waste removal component, achieving full automation from electrode conveying and cutting to waste collection, thus improving the overall efficiency of battery electrode cutting. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of the battery electrode laser cutting device provided in the embodiment of this utility model.

[0017] Figure 2 This is a cross-sectional structural diagram of the material removal component provided in an embodiment of the present utility model.

[0018] Figure 3 A partial structural schematic diagram of the battery electrode laser cutting device provided in this embodiment of the utility model.

[0019] Figure 4 Another partial structural schematic diagram of the battery electrode laser cutting device provided in this embodiment of the utility model.

[0020] Figure 5 This is a partial structural diagram of the roller assembly provided in an embodiment of the present invention.

[0021] Marked in the image: 1. Material roller assembly; 11. Upper drive roller; 12. Lower drive roller; 13. Front pressure roller; 14. Upper support roller; 15. Lower support roller; 16. Support frame; 17. Cutting position; 18. Support arm; 2. Laser generator; 3. Material removal assembly; 31. Adsorption mechanism; 311. Adsorption hole; 312. Waste adsorption section; 313. Waste falling section; 314. Adsorption belt; 32. Waste collection mechanism; 33. Drive component; 34. Sealing plate; 341. Strip vent; 35. Negative pressure chamber; 36. First driven wheel; 37. Second driven wheel; 38. Drive wheel; 4. Cleaning assembly; 41. Air knife; 5. Battery electrode; 6. Connecting plate. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are some, but not all, of the embodiments of this utility model.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] Example 1: Please see Figure 1 , Figure 1 The structure of a battery electrode laser cutting device according to this utility model is shown. The battery electrode laser cutting device includes: a material roller assembly 1, including an upper drive roller 11, a lower drive roller 12 and a front pressure roller 13. The upper drive roller 11 and the lower drive roller 12 are used to convey the battery electrode 5 and form a cutting position 17 between them. The upper drive roller 11 and the lower drive roller 12 are both used to abut the back of the battery electrode 5, and the front pressure roller 13 is used to abut the front of the battery electrode 5 and is positioned close to the upper part of the cutting position 17; a laser generator 2 is positioned on one side close to the material roller assembly 1, and the laser beam emitted by the laser generator 2 is directed towards the cutting position 17; and a material removal assembly 3 is positioned below the material roller assembly 1 and close to the cutting position 17, for collecting the waste generated after the battery electrode 5 is cut.

[0025] Specifically, the front pressure roller 13 of the material roller assembly 1 is disposed on the top of the connecting plate 6, while the bottom of the connecting plate 6 is fixed to the material removal assembly 3. The upper drive roller 11 and the lower drive roller 12 of the material roller assembly 1 are both disposed on one side of the top position of the connecting plate 6, and the two are separated by the fed battery electrode sheet 5. The material roller assembly 1 is used to transport the fed battery electrode sheet 5 to the laser cutting work position. The upper drive roller 11 and the lower drive roller 12 of the material roller assembly 1 are disposed on the same side, with the lower drive roller 12 located below the upper drive roller 11 and perpendicular to the upper drive roller 11. Both the upper drive roller 11 and the lower drive roller 12 are used to abut against the back of the battery electrode sheet 5. The battery electrode sheet 5 enters from the upper drive roller 11, is conveyed vertically downward, and is carried out by the rotation of the lower drive roller 12.

[0026] A cutting position 17 is formed between the upper drive roller 11 and the lower drive roller 12. A front pressure roller 13 is positioned beside the cutting position 17 between the upper drive roller 11 and the lower drive roller 12, and is used to abut against the front side of the battery electrode 5. The contact surface of the front pressure roller 13 is positioned close to the upper part of the cutting position 17. The front pressure roller 13 can provide a clamping force on the battery electrode 5 through a driving device, so that the front pressure roller 13, in conjunction with the upper drive roller 11 and the lower drive roller 12, gives the battery electrode 5 located at the cutting position 17 a certain tension, preventing vibration during cutting.

[0027] It is worth noting that the side of the battery electrode 5 facing the laser cutting is the front side, and the other side is the back side. The front pressure roller 13 is positioned on the side that abuts against the front side of the battery electrode 5, while the upper drive roller 11 and the lower drive roller 12 are positioned on the side that abuts against the back side of the battery electrode 5. The front pressure roller 13 can be equipped with a pressure roller made of elastic material and a drive device with adjustable clamping force to adapt to the cutting requirements of different battery electrode 5, and there is no limitation on this.

[0028] Additionally, the laser generator 2 is mounted on the connecting plate 6 on one side of the material roller assembly 1, and the laser beam emitted by the laser generator 2 is directed directly at the front of the battery electrode at the cutting position 17. The material removal assembly 3 is located at the bottom of the connecting plate 6, below the material roller assembly 1. The adsorption mechanism 31 of the material removal assembly 3 is close to the lower drive roller 12, so that the waste material cut from the battery electrode 5 falls off after rotation and is adsorbed and received by the adsorption mechanism 31 below, preventing the waste material from sticking to the electrode. The adsorption mechanism 31 rotates synchronously with the drive roller, and a waste collection mechanism 32 is provided at the bottom of the adsorption mechanism 31. The adsorption mechanism 31 transfers the adsorbed waste material to the waste collection mechanism 32 for subsequent unified recycling and processing, realizing full automation of the process from cutting the battery electrode 5 to waste collection, reducing the need for maintenance due to production interruptions.

[0029] In this embodiment, after the equipment is started, the area to be processed of the battery electrode 5 is conveyed to the cutting position 17 via the upper drive roller 11 and the lower drive roller 12. Simultaneously, the front pressure roller 13, in conjunction with the drive roller, provides a certain clamping force to the battery electrode 5, maintaining stable tension at the cutting position 17. When the area to be cut reaches the cutting position 17, the laser generator 2 emits a laser beam for cutting. The battery electrode 5 at the cutting position 17 is subjected to the clamping force, effectively suppressing vibration during cutting. After cutting, the waste material is transferred to the waste collection mechanism 32 via the adsorption mechanism 31 for unified collection, while the finished electrode continues to be conveyed to subsequent processes via the lower drive roller 12. The battery electrode laser cutting device adopts a modular design, with different components working together to meet the cutting requirements of the battery electrode 5. The components are easy to clean and maintain, effectively improving equipment production efficiency.

[0030] Example 2: This embodiment represents a further structural optimization of the battery electrode laser cutting device of this invention. Please refer to [link to previous document]. Figure 1 and Figure 2 and combined Figure 5 .

[0031] In some embodiments, the material roller assembly 1 further includes an upper support roller 14 and a lower support roller 15, both of which are disposed within the cutting position 17 and are used to abut against the reverse side of the battery electrode sheet 5.

[0032] Specifically, an upper support roller 14 and a lower support roller 15 are provided between the upper drive roller 11 and the lower drive roller 12 to support the battery electrode sheet 5. Both the upper support roller 14 and the lower support roller 15 are positioned on the cutting position 17, on the opposite side of the battery electrode sheet 5 from the laser cutting process. During laser cutting, the battery electrode sheet 5 is impacted, causing it to vibrate, which affects the stability of the laser cutting. The upper support roller 14 and the lower support roller 15 provide a pre-existing cutting area and a support point adjacent to the cutting point, minimizing the suspension area of ​​the battery electrode sheet 5 on the cutting position 17. The upper support roller 14 and the lower support roller 15 provide close-range support for the battery electrode sheet 5 during laser cutting, further suppressing vibration during the cutting process.

[0033] In some embodiments, the upper roller 14 and the lower roller 15 are both mounted on the same support frame 16 so that the battery electrode 5 between the upper roller 14 and the lower roller 15 forms a laser cutting plane perpendicular to the emission direction of the laser beam.

[0034] Specifically, the support frame 16 can prevent the slight tilt caused by the different sizes of vertical shaking of the battery electrode 5, prevent the accuracy of the cutting position from decreasing, and thus ensure the consistency of the cut quality of the battery electrode 5 after laser cutting; at the same time, the support frame 16 makes the laser cutting plane formed by the battery electrode 5 located between the upper roller 14 and the lower roller 15 perpendicular to the laser beam emission direction.

[0035] Furthermore, the contact surfaces of the upper idler roller 14, the lower idler roller 15, and the front pressure roller 13 are all coated with an anti-stick layer. This anti-stick layer can be, but is not limited to, a DLC coating. In addition to being wear-resistant, the DLC coating also has high-temperature resistance, which can prevent dust from sticking to the roller surface and making it impossible to clean.

[0036] In some embodiments, the horizontal distance between the upper roller 14, the lower roller 15 and the laser generator 2 is less than the horizontal distance between the upper drive roller 11, the lower drive roller 12 and the laser generator 2.

[0037] Specifically, such as Figure 5 As shown, the horizontal distance between the upper drive roller 11 and the lower drive roller 12 on the material roller assembly 1 and the laser generator 2 is D1. The horizontal distance between the upper support roller 14 and the lower support roller 15 on the material roller assembly 1 and the laser generator 2 is D2, and D2 is less than D1. It can be understood that the upper support roller 14 and the lower support roller 15 are used to abut against the battery electrode 5, causing the laser-cutting plane formed by the battery electrode 5 located between the upper support roller 14 and the lower support roller 15 to bulge towards the laser generator 2.

[0038] It is worth noting that D1 is slightly larger than D2. The upper roller 14 and the lower roller 15 are used to abut against the back of the battery electrode 5, so that the upper roller 14 and the lower roller 15 make slight contact with the back of the electrode 5, so as to facilitate laser cutting and ensure that the electrode is within the effective focal depth range during cutting.

[0039] Furthermore, the front pressure roller 13 is located on the side close to the upper support roller 14. The front pressure roller 13 can cooperate with the upper support roller 14 to press against the front and back surfaces of the same area on the battery electrode 5, forming a clamping action, which better prevents vibration of the battery electrode 5 during laser cutting.

[0040] In some embodiments, the battery laser cutting apparatus further includes a cleaning component 4, which is disposed on one side of the material roller assembly 1. The cleaning component 4 includes an air knife 41 facing the periphery of the front pressure roller 13.

[0041] Specifically, the cleaning component 4 is located on one side of the material roller assembly 1 and is used to clean the rollers near the cutting position 17. The cleaning component 4 includes an air knife cleaning method, in which compressed air flows to the air knife nozzle 41 and is sprayed onto the front pressure roller 13 for cleaning.

[0042] Furthermore, the battery electrode laser cutting device also includes a connecting plate 6, which supports and connects the material removal component 3 and the cleaning component 4. The connecting plate 6 is provided with a guide block 18, on which the front pressure roller 13 is mounted to adjust its direction. The cleaning component 4 is disposed on the connecting plate 6, and its air knife 41 is positioned facing the periphery of the front pressure roller 13, forming an air knife against the front pressure roller 13, and allowing the front and rear flow fields of the upper support roller 14 and the lower support roller 15 to be transparent.

[0043] In this embodiment, an upper support roller 14 and a lower support roller 15 are respectively arranged above and below the cutting position 17. The upper support roller 14 and the lower support roller 15 make slight contact with the reverse side of the battery electrode 5 and form a laser cutting plane to ensure that the battery electrode 5 is within the effective focal depth range during cutting. An anti-stick layer is provided on the contact surfaces of the front pressure roller 13, the upper support roller 14, and the lower support roller 15 with the battery electrode 5 to prevent dust from sticking to the roller surface and making it impossible to clean. At the same time, the roller surfaces near the cutting position 17 are cleaned by an air knife to ensure that the device is stable and reliable, and has the characteristics of stable cutting and good dust removal effect.

[0044] Example 3: This embodiment represents a further structural optimization of the battery electrode laser cutting device of this invention. Please refer to [link to previous document]. Figure 3 and Figure 4 and combined Figure 2 .

[0045] In some embodiments, the adsorption mechanism 31 includes an adsorption belt 314 and a drive member 33 for driving the adsorption belt 314 to operate. The adsorption belt 314 is provided with a plurality of adsorption holes 311. The inner side of the adsorption belt 314 is provided with a negative pressure cavity 35 that communicates with a negative pressure source. The adsorption holes 311 communicate with the negative pressure cavity 35.

[0046] Specifically, the adsorption belt 314 is driven by a drive unit 33, which may be, but is not limited to, a servo motor drive. The inner side of the adsorption belt 314 is provided with a negative pressure cavity 35 that is connected to a negative pressure source. The adsorption belt 314 is provided with a plurality of adsorption holes 311. The plurality of adsorption holes 311 can be continuously and spaced along the rotation direction of the adsorption belt 314. The adsorption holes 311 are connected to the negative pressure cavity 35 inside the adsorption belt 314 to form a negative pressure on the surface of the adsorption belt 314 for adsorbing waste materials falling from the material roller assembly 1.

[0047] It is understandable that the laser beam cuts the battery electrode 5 at the cutting position 17, generating waste material. The waste material and the battery electrode 5 move together towards the lower drive roller 12. Since the upper end of the adsorption belt 314 is close to one side of the lower drive roller 12, it can adsorb the waste material moving with the battery electrode 5. The battery electrode 5 continues to move backward through the lower drive roller 12, while the waste material is adsorbed on the adsorption belt 314 under negative pressure and is brought into the waste collection mechanism 32 for unified collection.

[0048] In some embodiments, the adsorption mechanism 31 is closed by a sealing plate 34 to form a negative pressure cavity 35. A strip-shaped ventilation opening 341 is provided on the sealing plate 34 near the adsorption belt 314, and the position of the strip-shaped ventilation opening 341 corresponds to that of the adsorption hole 311.

[0049] Specifically, the negative pressure cavity 35 inside the adsorption belt 314 is sealed with a sealing plate 34 to increase the negative pressure intensity. A strip-shaped ventilation opening 341 is provided on the side near the adsorption belt 314, and this strip-shaped ventilation opening 341 is located close to the feed roller assembly 1. Negative pressure is generated only when the adsorption holes 311 on the adsorption belt 314 pass through the strip-shaped ventilation opening 341 to adsorb waste materials, thereby avoiding unnecessary energy loss caused by the entire adsorption belt 314 working together to achieve a negative pressure adsorption effect.

[0050] In some embodiments, the material removal assembly 3 further includes a first driven wheel 36, a second driven wheel 37, and a driving wheel 38 that are connected to the adsorption belt 314. The driving wheel 38 is connected to the drive end of a servo motor. The first driven wheel 36 is located near the lower part of the cutting position 17, and the second driven wheel 37 is located near the lower part of the lower transmission roller 12. The adsorption belt 314 forms a waste adsorption section 312 between the first driven wheel 36 and the second driven wheel 37. The driving wheel 38 is located above the waste collection mechanism 32. The adsorption belt 314 forms a waste falling section 313 between the second driven wheel 37 and the driving wheel 38. The adsorption belt 314 located in the waste falling section 313 has an inverted inclined surface.

[0051] Specifically, the adsorption belt 314 is driven by a drive wheel 38 and rotates in a closed-loop transmission manner supported by at least two driven wheels. The driven wheels include a first driven wheel 36 and a second driven wheel 37. The two driven wheels are located near the lower drive roller 12 to support the adsorption belt 314 close to the lower drive roller 12, so as to separate the waste from the battery electrode 5 by negative pressure adsorption. The first driven wheel 36, the second driven wheel 37, the drive wheel 38, and the adsorption belt 314 together constitute the adsorption mechanism. The drive wheel 38 is located at the bottom of the adsorption mechanism and above the feed inlet of the waste collection mechanism 32. The adsorption belt 314 forms a waste adsorption section 312 between the first driven wheel 36 and the second driven wheel 37, and a waste dropping section 313 between the second driven wheel 37 and the driving wheel 38. The waste adsorption section 312 is parallel to the conveying direction of the battery electrode 5, while the waste dropping section 313 is an inverted inclined plane. As the adsorption belt 314 rotates, the waste gradually detaches from the waste dropping section 313 under its own gravity and falls into the waste collection mechanism 32 below.

[0052] In some embodiments, the negative pressure chamber 35 is close to the inner side of the adsorption belt 314. On the waste drop section 313, as the adsorption belt 314 is conveyed, the negative pressure chamber 35 and the adsorption belt 314 gradually separate.

[0053] Specifically, the negative pressure provided by the suction holes 311 connected to the negative pressure chamber 35 is smaller at the end closer to the drive wheel 38, so that the waste adsorbed on the suction belt 314 can fall into the waste collection mechanism 32 before rotating to the drive wheel 38. The gradual decrease in negative pressure is reflected in the fact that the negative pressure chamber 35 is no longer close to the suction belt 314, that is, the strip vent 341 gradually moves away from the suction belt 314, and the negative pressure generated by the suction holes 311 passing through them decreases as the distance between them increases.

[0054] In this embodiment, the adsorption mechanism 31 has a negative pressure cavity 35 enclosed by a sealing plate 34 on its inner side. This negative pressure cavity 35 is connected to an external negative pressure source. The negative pressure cavity 35 provides negative pressure to the adsorption belt 314 through a strip-shaped ventilation port 341, so that the adsorption belt 314 is driven by the drive wheel 38, causing the adsorption holes 311 to rotate with the belt. The adsorption holes 311 generate negative pressure on the surface of the adsorption belt 314 only when they pass through the strip-shaped ventilation port 341, thereby forming an adsorption area for adsorbing the cutting waste. Subsequently, the waste is carried by the adsorption belt 314 to the waste collection mechanism 32 for unified collection. By setting the strip-shaped ventilation port 341, this device realizes the directional supply of negative pressure, realizes the automation and efficiency of the waste collection process, and can also ensure that the waste is firmly adsorbed in the waste adsorption section 312 and smoothly released into the waste collection mechanism 32 in the waste falling section 313 by adjusting the distance between the strip-shaped ventilation port 341 and the adsorption belt 314.

[0055] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0056] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0057] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0058] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0059] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A laser cutting device for battery electrodes, characterized in that, include: The material roller assembly includes an upper drive roller, a lower drive roller, and a front pressure roller. The upper drive roller and the lower drive roller are used to convey battery electrode sheets and form a cutting position between them. The upper drive roller and the lower drive roller are both used to abut the back of the battery electrode sheet. The front pressure roller is used to abut the front of the battery electrode sheet and is positioned close to and above the cutting position. A laser generator is located on one side near the material roller assembly, and the laser beam emitted by the laser generator is directed at the cutting position; as well as The material removal component is located below the material roller assembly and near the cutting position, and is used to collect the waste generated after the battery electrode is cut.

2. The battery electrode laser cutting device according to claim 1, characterized in that, The material roller assembly also includes an upper support roller and a lower support roller, both of which are disposed within the cutting position and are used to abut against the reverse side of the battery electrode sheet.

3. The battery electrode laser cutting device according to claim 2, characterized in that, The upper roller and the lower roller are both mounted on the same support frame so that the battery electrode between the upper roller and the lower roller forms a laser cutting plane perpendicular to the emission direction of the laser beam.

4. The battery electrode laser cutting device according to claim 2, characterized in that, The contact surfaces of the upper roller, the lower roller, and the front pressure roller are all coated with an anti-sticking layer.

5. The battery electrode laser cutting device according to claim 2, characterized in that, The horizontal distance between the upper support roller, the lower support roller and the laser generator is less than the horizontal distance between the upper drive roller, the lower drive roller and the laser generator.

6. The battery electrode laser cutting device according to claim 2, characterized in that, The front pressure roller is located on the side close to the upper support roller.

7. The battery electrode laser cutting device according to claim 1, characterized in that, The material removal assembly includes an adsorption mechanism and a waste collection mechanism. The adsorption mechanism is used to transfer the waste generated at the cutting position to the waste collection mechanism. The adsorption mechanism includes an adsorption belt and a drive component for driving the adsorption belt to operate. The adsorption belt is provided with a plurality of adsorption holes, and a negative pressure cavity communicating with a negative pressure source is provided on the inner side of the adsorption belt. The adsorption holes are in communication with the negative pressure cavity.

8. The battery electrode laser cutting device according to claim 7, characterized in that, The adsorption mechanism is sealed by a sealing plate to form the negative pressure cavity. A strip-shaped ventilation opening is provided on the sealing plate near the adsorption belt, and the position of the strip-shaped ventilation opening corresponds to that of the adsorption hole.

9. The battery electrode laser cutting device according to claim 1, characterized in that, It also includes a cleaning component disposed on one side of the material roller assembly, the cleaning component including an air knife facing the periphery of the front pressure roller.

10. The battery electrode laser cutting device according to claim 9, characterized in that, It also includes a connecting plate for supporting and connecting the material removal component and the cleaning component; The connecting plate is provided with a guide block, and the front pressure roller is mounted on the guide block for adjusting the direction of the front pressure roller.

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