Battery pole piece cutting and chamfering die

Abstract

The application provides a battery pole piece cutting and chamfering die, which comprises an upper die, a lower die and a lower cutter assembly. The upper die has an upper die top plate and an upper die plate, and is provided with an upper cutter groove. The lower die comprises a lower die bottom plate, a lower die plate and a lower die pressing plate, and is installed on the upper die in a liftable manner. Two groups of V-shaped blade structures are symmetrically arranged on the lower cutter body, and each group comprises a chamfering blade part and a cutting blade part. This design can simultaneously and independently cut and chamfer two adjacent battery pole pieces, thereby improving production efficiency and reducing cost. The V-shaped blade design ensures the consistency of the cutting action, so that the pole pieces are uniformly stressed during cutting, and the cutting deviation is reduced. In summary, the innovative design optimizes the production process of the battery pole piece, and improves the product quality and production efficiency.

Description

Technical Field

[0001] This application relates to the field of battery electrode cutting molds, and in particular to a battery electrode cutting chamfering mold. Background Technology

[0002] In the battery manufacturing industry, battery electrodes are a core component of batteries, and their production quality and efficiency directly affect the performance and market competitiveness of the final battery product. A battery electrode cutting and chamfering die is a key mold specifically designed for processing battery electrodes. It combines cutting and rounding functions, aiming to automate the cutting of coiled battery electrodes and the rounding of the cut edges.

[0003] It can adapt to the processing of continuous roll battery electrode sheets through the overall movement of the mold, that is, to precisely cut the battery electrode sheets, and at the same time, to smooth the sides of the electrode sheets to eliminate sharp right-angle edges, prevent scratching the battery cells during subsequent processing or use, and improve product safety and yield.

[0004] Chinese utility model patent discloses a novel rounded corner cutter for lithium battery electrodes, publication number CN209124682U. It discloses a lower die frame equipped with a cutting and chamfering mechanism and a material support plate, and an upper die frame equipped with a pressure plate. The electrode is placed on the cutting and chamfering mechanism and the material support plate, and the pressure plate applies pressure to the electrode. The cutting and chamfering mechanism can cut and chamfer the electrode in one step, which is convenient and fast. However, the disadvantage of this novel rounded corner cutter for lithium battery electrodes is:

[0005] (1) This cutting blade design is only suitable for cutting and rounding one side of a single battery electrode sheet. For electrodes that need to be processed on both sides, a second operation is required, which reduces the overall production efficiency.

[0006] In summary, although this patent has solved the problems of battery electrode cutting and rounding to some extent, the processing efficiency still needs further improvement and optimization. Summary of the Invention

[0007] The purpose of this invention is to provide a battery electrode cutting and chamfering die, which is particularly suitable for continuous cutting and edge rounding of rolled battery electrodes. It enables simultaneous cutting and rounding of two adjacent battery electrodes, significantly improving production efficiency and processing quality.

[0008] A battery electrode cutting and chamfering die includes an upper die with an upper die top plate and an upper template disposed at the bottom of the upper die top plate, the upper template having an upper cutting groove; a lower die, movably mounted on the upper die via guide posts, the lower die including a lower die bottom plate, a lower template mounted on the lower die bottom plate, and a lower die pressure plate, the lower die pressure plate being mounted on the lower template via pressure plate guide posts; and a lower cutting blade assembly including a lower cutting blade body, the bottom of the lower cutting blade body being mounted on the lower die bottom plate, the top of the lower cutting blade body passing upward through corresponding through grooves in the lower template and the lower die pressure plate, to simultaneously engage with corresponding upper cutting grooves on the upper template to cut two adjacent battery electrodes. The electrode sheets are cut and rounded. The lower cutting blade has two sets of blade structures symmetrically arranged on its main body. These two sets of blade structures are V-shaped, and each set includes a chamfering blade and a cutting blade. The chamfering and cutting blades in the first set work together to cut one battery electrode sheet and round its cut edges. Simultaneously, the chamfering and cutting blades in the second set work together to cut the other battery electrode sheet and round its cut edges. The two sets of blade structures are symmetrically arranged to ensure that the adjacent sides of the two battery electrodes can be cut and rounded simultaneously and independently.

[0009] Furthermore, all the cutting blades are inclined.

[0010] Furthermore, the chamfered cutting edges are respectively disposed on both sides of the cutting edge.

[0011] Furthermore, guide portions are provided on both sides of the lower cutter body.

[0012] Furthermore, the guide portion is V-shaped.

[0013] Furthermore, the lower cutting blade assembly also includes a discharge pin, which is located between the two sets of cutting blade structures.

[0014] Furthermore, the discharge ejector pin includes a first ejector pin and a second ejector pin, wherein the length of the first ejector pin is shorter than the length of the second ejector pin.

[0015] Furthermore, the first ejector pin has two prongs respectively located near the chamfered cutting edge, and the second ejector pin has three prongs evenly distributed between the first ejector pins.

[0016] Furthermore, the lower cutter body is also provided with an air blowing hole.

[0017] Furthermore, the air inlet is located between the cutting blades.

[0018] The beneficial effects of this application are:

[0019] (1) This application achieves simultaneous cutting and rounding of two adjacent battery electrode sheets by symmetrically setting two sets of blade structures on the lower cutting blade body. Each set of blade structures includes a chamfering blade part and a cutting blade part, thereby significantly improving production efficiency and reducing production costs.

[0020] (2) The V-shaped blade structure of this application ensures the consistency of the cutting action on both sides, so that the two adjacent battery plates can be evenly stressed during the cutting process, avoiding cutting deviation caused by uneven stress. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a battery electrode cutting and chamfering mold provided in one embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the structure of a battery electrode cutting and chamfering mold provided in one embodiment of this application;

[0023] Figure 3 This is a top view of a battery electrode cutting and chamfering die provided in an embodiment of this application;

[0024] Figure 4 This is a cross-sectional view at point AA of this application;

[0025] Figure 5 A three-dimensional structural schematic diagram of the lower cutting blade body provided in an embodiment of this application;

[0026] Figure 6 A front view of the lower cutter body provided in an embodiment of this application;

[0027] Figure 7 A three-dimensional structural diagram of the first ejector pin, the second ejector pin, and the air blowing hole provided in an embodiment of this application;

[0028] Figure 8 A cross-sectional view of a first ejector pin, a second ejector pin, and an air blowing hole provided in an embodiment of this application;

[0029] Figure 9 This is a top view of a battery electrode cutting and chamfering die provided in an embodiment of this application;

[0030] Figure 10 for Figure 9 Sectional view at BB;

[0031] Figure 11 This is a three-dimensional structural schematic diagram of a driving device provided in an embodiment of this application;

[0032] Figure 12 This is a three-dimensional structural schematic diagram of a belt tension adjustment assembly provided in an embodiment of this application;

[0033] Figure 13 This is a cross-sectional view of a battery electrode cutting and chamfering die provided in an embodiment of this application;

[0034] Figure 14 A perspective view of a waste discharge box provided in an embodiment of this application;

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Upper mold; 2. Lower mold; 3. Lower cutter assembly; 4. Guide pillars; 5. Drive unit; 6. Waste removal device;

[0037] 11. Upper mold top plate; 12. Upper template;

[0038] 121. Upper cutting groove; 122. First waste discharge groove; 111. Second waste discharge groove;

[0039] 21. Lower mold base plate; 22. Lower template; 23. Lower mold pressure plate; 24. Auxiliary extension plate; 25. Equal height sleeve; 26. Equal height spring;

[0040] 31. Lower cutting blade body; 32. First ejector pin; 33. Second ejector pin; 34. Air blowing hole;

[0041] 311. Chamfered cutting edge; 312. Cutting cutting edge; 313. Guide section;

[0042] 51. Drive motor; 52. Drive screw; 53. Drive nut seat; 54. Drive belt; 55. Drive pulley; 56. Fixed side plate; 57. Screw mounting seat; 58. Belt tension adjustment assembly;

[0043] 581. Belt tension adjusting wheel; 582. Adjusting slider; 583. Adjusting pressure block;

[0044] 61. Waste discharge box; 62. Waste discharge pipe; 63. Box cover; 64. Cover closing switch; 65. Sealing groove; 66. Sealing ring; Detailed Implementation

[0045] The terminology used in the implementation section of this application is only for explaining specific embodiments of this application and is not intended to limit this application. The implementation of the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0046] The battery electrode cutting and chamfering die is installed at an angle to accommodate the tight installation space and specific processing techniques. Despite the limited installation space, the die's design and installation must ensure its functionality and precision. Furthermore, the overall mobility of the die is designed to support continuous operation on the production line, ensuring efficient and accurate cutting and chamfering. These characteristics collectively highlight the importance and complexity of this die in the battery electrode processing.

[0047] like Figure 1 As shown, a battery electrode cutting and chamfering die includes an upper die 1, a lower die 2, a lower cutting blade assembly 3, a guide post 4, a driving device 5, and a waste discharge device 6.

[0048] like Figure 2 and Figure 4 As shown, the upper mold has an upper mold top plate 11 and an upper template 12 disposed at the bottom of the upper mold top plate 11. The upper template 12 is provided with an upper cutting groove 121. The lower mold is mounted on the upper mold via guide pillars 4. The lower mold includes a lower mold bottom plate 21, a lower template 22 mounted on the lower mold bottom plate 21, and a lower mold pressure plate 23. The lower mold pressure plate 23 is mounted on the lower template 22 via pressure plate guide pillars 4.

[0049] like Figure 5 As shown, the lower cutting blade assembly 3 includes a lower cutting blade body 31. The bottom of the lower cutting blade body 31 is mounted on the lower mold base plate 21. The top of the lower cutting blade body 31 passes upward through the corresponding through slots in the lower template 22 and the lower mold pressing plate 23, so as to simultaneously cooperate with the corresponding upper cutting blade slot 121 on the upper template 12 to cut and round the corners of two adjacent battery electrode sheets. The lower cutting blade body 31 is symmetrically provided with two sets of blade structures, which are V-shaped. Each set of blade structures includes a chamfering blade. The first set of blades, consisting of a chamfering blade 311 and a cutting blade 312, works together to cut one of the battery electrodes and round off its cut edges. Simultaneously, the second set of blades, also consisting of a chamfering blade 311 and a cutting blade 312, works together to cut the other battery electrode and round off its cut edges. The two sets of blades are symmetrically arranged to ensure that the adjacent sides of the two battery electrodes can be cut and rounded off simultaneously and independently.

[0050] The mold mainly consists of an upper mold, a lower mold, and a lower cutting blade assembly 3. Initially, the upper and lower molds are separated, and the lower mold pressure plate 23 is not clamped. When the mold moves to the cutting position, the lower mold begins to rise. Before cutting, the lower mold pressure plate 23 clamps the battery electrode. This step ensures that the battery electrode does not move or misalign during cutting, thus guaranteeing the accuracy and consistency of the cut. The lower mold continues to rise, aligning the blade of the lower cutting blade assembly 3 with the cutting groove of the upper mold. Once aligned, the cutting blade 312 begins to work, precisely cutting the clamped battery electrode. Simultaneously, the chamfering blade 311 chamfers the edges of the cut battery electrode, removing sharp edges and improving battery safety. After completing the side cutting and chamfering operations of two adjacent battery electrodes, the lower mold begins to descend, and the lower mold pressure plate 23 releases its clamping force on the battery electrode. Then, the cut and chamfered battery electrodes can be unloaded. The mold returns to its initial state.

[0051] like Figure 6 As shown, in this embodiment, the cutting blades 312 are all inclined, that is, they gradually decrease from left to right. The inclined blades can gradually cut into the material during the cutting process, rather than cutting vertically all at once, thereby reducing the force required for cutting.

[0052] The angled blade can more effectively distribute stress during the cutting process, reducing tearing or deformation of the material. This helps ensure the flatness and precision of the cut surface, thereby improving the overall quality of the battery electrode.

[0053] like Figure 5 As shown, in this embodiment, the chamfering blade portions 311 are respectively disposed on both sides of the cutting blade portion 312, that is, the lower cutting blade body 31 is provided with four chamfering blade portions 311. By integrating the chamfering blade portions 311 and the cutting blade portions 312, it can be ensured that the edges of the battery electrode sheet receive a consistent chamfering treatment after each cutting. This consistency is crucial for ensuring the quality and performance of the battery electrode sheet.

[0054] like Figure 5 As shown, in this embodiment, guide portions 313 are respectively provided on both sides of the lower cutter body 31. The guide portions 313 can guide the movement direction of the lower cutter during the cutting process, ensuring the accuracy and precision of the cutting. Especially when the mold is tilted, the guide portions 313 can correct the deviation that may be caused by the tilt, maintaining the straightness and consistency of the cutting.

[0055] Since the drive unit 5 is located on one side, the lower cutter may generate an unbalanced torque when subjected to force during cutting. The design of the guide part 313 can increase the stability of the lower cutter, reduce shaking and deviation during the cutting process, and thus ensure the cutting quality.

[0056] like Figure 5 As shown, in this embodiment, the guide portion 313 is V-shaped. The shape of the guide portion 313 matches the shape of the blade structure, which helps to maintain stability and accuracy during the cutting process. When the blade cuts along the V-shaped path, the V-shaped guide portion 313 can provide corresponding guidance to ensure that the cutting force and the guiding force are in the same direction, thereby reducing deviations and errors during cutting.

[0057] like Figure 7 As shown in this embodiment, the lower cutting blade assembly 3 also includes a discharge ejector pin, which is located between the two sets of cutting blade structures. The discharge ejector pin's location between the two sets of cutting blade structures helps to eject waste material from between the blades during the cutting process, ensuring that the cut material does not get stuck between the blades, thereby maintaining the continuity and smoothness of the cutting process.

[0058] Because of the discharge pin, there is no need to frequently stop the machine to clean the waste stuck between the blades during the cutting process, thereby reducing production downtime and improving production efficiency.

[0059] like Figure 7 As shown, in this embodiment, the discharge ejector includes a first ejector 32 and a second ejector 33, with the length of the first ejector 32 being shorter than the length of the second ejector 33. The middle section of battery electrode waste is narrower, therefore a longer ejector (i.e., the second ejector 33) is needed to ensure the waste can be effectively ejected. A longer ejector can provide greater force, allowing the waste to be smoothly discharged from the cutting blade structure. The side section of battery electrode waste is wider and relatively easier to eject. Therefore, a shorter ejector (i.e., the first ejector 32) can be used to accomplish this task. A shorter ejector is equally effective in ejecting side waste and may be more flexible and easier to control.

[0060] like Figure 7 As shown in this embodiment, the first ejector pin 32 is provided with two pins respectively close to the chamfered cutting edge 311, and the second ejector pin 33 is provided with three pins evenly distributed between the first ejector pins 32.

[0061] like Figure 8 As shown, in this embodiment, the lower cutter body 31 is also provided with an air blowing hole 34. The setting of the air blowing hole 34 to realize the air blowing function mainly includes the following steps: First, prepare a stable air source, such as an air compressor, to provide compressed air; second, design an airflow channel on the lower die base plate 21 to ensure that it is connected to the air blowing hole 34 on the lower cutter body 31; then, connect the air source and the airflow channel tightly through an air pipe to realize the air blowing function of the air blowing hole 34.

[0062] During the cutting process, a large amount of chips and dust are generated. The air vent 34 effectively blows away these chips and dust by expelling air, keeping the cutting area clean. This not only helps maintain a clean working environment but also prevents chips and dust from harming the equipment and operators.

[0063] In some cases, cut material may stick to the blade or equipment due to static electricity or other reasons. The gas blown out by the air vent 34 can effectively break this adhesion, ensuring that the cut material can be easily removed, thereby improving production efficiency.

[0064] like Figure 7 As shown, in this embodiment, the air blowing hole 34 is located between the cutting blades. The air blowing hole 34 is aligned with the center of the waste material, allowing for more targeted removal of the waste. Since the waste material is typically cut from the blades, its position is precisely between the blades, thus ensuring that the waste material is effectively blown away from the cutting area.

[0065] like Figure 2 As shown in this embodiment, an auxiliary extension plate 24 is provided on one side of the lower die pressing plate 23 to support the battery electrode sheet. By providing the auxiliary extension plate 24, the positional accuracy of the battery electrode sheet during processing can be ensured.

[0066] like Figure 10 As shown in this embodiment, a height equalization sleeve 25 is also provided on the lower mold base plate 21. The lower end of the height equalization sleeve 25 is installed on the lower mold base plate 21 and abuts against the height equalization spring 26. The upper end of the height equalization sleeve 25 passes through the lower template 22 and connects to the lower mold pressure plate 23. The synergistic effect of the height equalization sleeve 25 and the height equalization spring 26 ensures that the lower mold pressure plate 23 can maintain a consistent height and stability throughout the entire processing.

[0067] like Figure 11 As shown, this embodiment also includes a driving device 5, which includes a driving motor 51, a driving screw 52, ​​a driving nut seat 53, and a belt assembly. A fixed side plate 56 is provided on the rear side of the top of the upper mold. The driving motor 51 is installed on the rear side of the fixed plate. The driving screw 52 is installed on the top of the upper mold and the fixed side plate 56 respectively through a screw mounting seat 57. The driving nut seat 53 is installed on the driving screw 52 and is connected to the lower mold base plate 21. The driving motor 51 is connected to the driving screw 52 through the belt assembly and drives the driving screw 52 to rotate. The driving screw 52 drives the driving nut seat 53 to drive the lower mold base plate 21 to move upward along the guide post 4. The lower mold base plate 21 drives the lower mold pressing plate 23 to press the battery electrode sheet to be cut onto the upper template 12. At the same time, the lower template 22 drives the lower cutting blade body 31 to cut and round the corners of the battery electrode sheet.

[0068] The drive motor 51 is mounted on the rear side of the fixed plate, while the drive screw 52 is mounted on the top of the upper mold and the fixed side plate 56 respectively through the screw mounting seat 57. The drive motor 51 and the drive screw 52 are symmetrically arranged. The symmetrical arrangement helps to maintain the stability of the center of gravity of the whole device, reduce vibration and unbalanced force caused by the center of gravity shift, thereby improving the smoothness of the equipment operation and the cutting accuracy.

[0069] The drive motor 51 is connected to the drive screw 52 via a belt assembly, which can efficiently convert the rotational motion of the motor into linear motion, thereby driving the lower mold base plate 21 to move upward along the guide post 4. This design ensures a fast and accurate action response.

[0070] like Figure 11 As shown in this embodiment, the belt assembly includes a drive belt 54 and drive pulleys 55. The drive pulleys 55 are connected to the drive motor 51 and the drive screw 52 respectively, and the drive belt 54 is mounted on the two drive pulleys 55.

[0071] like Figure 12As shown in this embodiment, the belt tension adjustment assembly 58 includes a belt tension adjustment wheel 581, an adjustment slider 582, and adjustment blocks 583. The belt tension adjustment wheel 581 is mounted on the adjustment slider 582, which is located between the two adjustment blocks 583. After adjustment, the adjustment slider 582 is locked with bolts. The belt tension adjustment wheel 581 is mounted on the adjustment slider 582, allowing the belt tension to be flexibly adjusted as needed. This design adapts to different belt tension requirements under different working environments.

[0072] like Figure 13 As shown in this embodiment, a waste discharge device 6 is provided on the upper mold top plate 11, a first waste discharge groove 122 is provided on the upper mold plate 12, and a second waste discharge groove 111 is provided on the upper mold top plate 11. The waste discharge device 6 discharges waste and dust from the battery electrode sheets from the first waste discharge groove 122 and the second waste discharge groove 111 by means of air extraction. Timely discharge of waste and dust by air extraction helps maintain the cleanliness of the work area and reduces the impact of pollutants on the working environment and operators.

[0073] By incorporating an extraction device, which may include a fan or vacuum pump, the extraction device is connected to the waste discharge device 6 to generate negative pressure suction. The extraction device is connected to the first waste discharge trough 122 and the second waste discharge trough 111 via pipes. When the extraction device is activated, it generates negative pressure at the waste discharge troughs, attracting waste and dust. The sucked-in waste and dust are then transported through pipes to designated collection containers, such as dust bags or filters, thereby achieving the separation and collection of waste and dust.

[0074] like Figure 14 As shown, in this embodiment, the waste discharge device 6 includes a waste discharge box 61. The top of the waste discharge box 61 has a first opening, and the bottom of the waste discharge box 61 has a second opening. A waste discharge pipe 62 is provided on the left side of the waste discharge box 61, which is used to connect to an air extraction device. The waste discharge box 61 communicates with the second waste discharge trough 111 through the second opening. A cover 63 that can be closed is provided at the first opening. The design of the waste discharge box 61 allows waste and dust to be collected and managed centrally, avoiding the scattering and accumulation of waste in the working area, thereby maintaining a clean working environment.

[0075] The waste discharge box 61 is connected to the second waste discharge trough 111 through the second opening, ensuring that waste and dust can smoothly enter the waste discharge box 61 and avoid secondary pollution during operation.

[0076] The cover 63 at the first opening allows the waste discharge box 61 to remain sealed when waste discharge is not required, preventing leakage and spread of waste, while also facilitating opening and cleaning when needed.

[0077] like Figure 14 As shown, in this embodiment, the lid 63 is hinged to one side of the waste discharge box 61, and a closing switch 64 is provided on both the lid 63 and the waste discharge box 61. The hinged lid 63 makes opening and closing the lid 63 very simple and convenient. Operators can easily access the interior of the waste discharge box 61 for cleaning or maintenance by flipping the lid 63. The closing switch 64 ensures that the lid 63 fits tightly against the waste discharge box 61 when closed, preventing waste and dust leakage. This design not only protects the working environment but also reduces the risk of operators being exposed to potentially hazardous substances.

[0078] like Figure 14 As shown, in this embodiment, the cover closing switch 64 is a magnetic switch.

[0079] like Figure 13 As shown, in this embodiment, a sealing groove 65 is provided at the edge of the first opening, and a sealing ring 66 is provided inside the sealing groove 65. By providing the sealing groove 65 and the sealing ring 66, the sealing performance of the waste discharge box 61 can be significantly enhanced. The sealing ring 66 can fit tightly against the contact surface between the box cover 63 and the waste discharge box 61, effectively preventing gas and dust from leaking from the interface.

[0080] The working principle of the battery electrode cutting and chamfering die is as follows:

[0081] First, the battery electrode cutting and chamfering die is mounted on the worktable, and to accommodate the compact installation space and specific processing techniques, the die is installed at an angle. This angle not only saves space but also allows the die to better integrate with the production line for continuous operation.

[0082] When a cutting operation is required, the mold first moves as a whole to the battery electrode cutting position. At this time, the lower mold is in the lowest position, the upper mold and the lower mold are separated, and the lower mold pressure plate 23 is also not clamped.

[0083] Next, the drive unit 5 starts. The drive unit 5 includes components such as a drive motor 51, a drive screw 52, ​​a drive nut seat 53, and a belt assembly, which work together to drive the lower die to move upward. Specifically, the drive motor 51 drives the drive screw 52 to rotate via the belt assembly, and the drive nut seat 53 rises with the rotation of the screw, thereby pushing the lower die base plate 21 and the lower die template 22 and lower die pressure plate 23 mounted on it to rise together.

[0084] Before cutting, the lower die pressure plate 23 presses the battery electrode sheet firmly. This step is to ensure that the battery electrode sheet will not move or misalign during the cutting process, thereby ensuring the accuracy and consistency of the cutting. As the lower die continues to rise, the blade of the lower cutting blade assembly 3 gradually aligns with the cutting groove of the upper die.

[0085] The cutting blade 312 begins operation, precisely cutting the pressed battery electrode sheets. Simultaneously, the chamfering blade 311 chamfers the edges of the cut battery electrode sheets, removing sharp edges to improve battery safety. During this process, the two sets of blades are symmetrically arranged to ensure that adjacent sides of the two battery electrode sheets can be cut and rounded simultaneously and independently.

[0086] After the cutting and chamfering operations are completed, the ejector pin begins to work, working in conjunction with the air blower 34 to push the waste material out from between the blades. The air blown out by the air blower 34 not only helps to push out the waste material, but also effectively blows away the chips and dust generated during the cutting process. The ejected waste material and the blown-out chips and dust are then quickly sucked away by the suction system of the waste discharge device 6. This step ensures that the cutting area remains clean, while preventing waste material and dust from affecting subsequent processing. Through the above waste cleaning process, it can be ensured that the cut material will not get stuck between the blades, thus maintaining the continuity and smoothness of the cutting operation. After the waste cleaning is completed, the lower die begins to descend and reset. As the lower die resets, the lower die pressure plate 23 also releases the clamping force on the battery electrode sheet. Finally, the cut and chamfered battery electrode sheet can be unloaded.

[0087] Finally, as the mold returns to its initial state, a complete cutting and chamfering process is finished. This design allows the mold to adapt to the needs of efficient, automated production lines, improving production efficiency and cutting quality while reducing production costs and operational complexity.

[0088] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or 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 the embodiments of this application according to the specific circumstances.

[0089] The devices or elements referred to in the embodiments of this application or implied herein must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of this application. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0090] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “may include” and “have,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of this application, and are not intended to limit them. Although the embodiments of this application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A battery electrode cutting and chamfering die, characterized in that: It includes an upper mold, having an upper mold top plate and an upper template set at the bottom of the upper mold top plate, with an upper cutting groove provided on the upper template; The lower mold is mounted on the upper mold in a liftable manner via guide pillars. The lower mold includes a lower mold base plate, a lower template mounted on the lower mold base plate, and a lower mold pressure plate. The lower mold pressure plate is mounted on the lower template via pressure plate guide pillars. The lower cutting blade assembly includes a lower cutting blade body. The bottom of the lower cutting blade body is mounted on the lower mold base plate. The top of the lower cutting blade body passes through the corresponding through slots in the lower template and the lower mold pressure plate, so as to cooperate with the corresponding upper cutting groove on the upper template to cut and round the corners of two adjacent battery electrode sheets. The lower cutting blade body is symmetrically provided with two sets of blade structures. The two sets of blade structures are V-shaped. Each set of blade structures includes a chamfering blade part and a cutting blade part. The chamfering blade part and the cutting blade part in the first set of blade structures cooperate to cut one of the battery electrode sheets and round the cut edges. At the same time, the chamfering blade part and the cutting blade part in the second set of blade structures cooperate to cut the other battery electrode sheet and round the cut edges. The two sets of blade structures are symmetrically arranged to ensure that the adjacent sides of the two battery electrode sheets can be cut and rounded simultaneously and independently. The cutting blades are all angled. The lower cutter body has guide portions on both sides, and the guide portions are V-shaped. The lower cutting blade assembly also includes a discharge pin, which is located between two sets of cutting blade structures. The discharge pin includes a first pin and a second pin, and the length of the first pin is less than the length of the second pin.

2. The battery electrode cutting and chamfering die according to claim 1, characterized in that: The chamfered cutting edges are respectively located on both sides of the cutting edge.

3. The battery electrode cutting and chamfering die according to claim 1, characterized in that: The first ejector pin has two pins respectively located near the chamfered cutting edge, and the second ejector pin has three pins evenly distributed between the first ejector pins.

4. The battery electrode cutting and chamfering die according to claim 1, characterized in that: The lower cutter body is also provided with an air blowing hole.

5. A battery electrode cutting and chamfering die according to claim 4, characterized in that: The air inlet is located between the cutting blades.

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