Cutting structure and cutting device comprising same

Abstract

The utility model relates to the technical field of cutting, in particular to a cutting structure which comprises a base body and an adjusting device arranged on the base body, and the adjusting device is connected with two correspondingly-arranged cutting knives. The cutting knife comprises a connecting body connected with the adjusting device and a cutting body connected with the connecting body, the cutting body is arranged to be of an arc-shaped structure, or the connecting body and the cutting body are combined to be of an arc-shaped structure. By means of the cutting knife, the seal of the formed naked battery cell can be cut into an arc shape, so that the abnormal situation that the seal edge pricks a battery cell main body in the manufacturing process can be effectively avoided, and the quality of the battery cell is improved. In addition, the utility model further discloses a cutting device comprising the cutting structure.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting, in particular to a cutting knife and a cutting device comprising the cutting knife. Background Art

[0002] Lithium-ion batteries are a new generation of green high-energy batteries with excellent performance and have become one of the key points of high-tech development. Lithium-ion batteries have the following characteristics: high voltage, high capacity, low consumption, no memory effect, no pollution, small size, low internal resistance, low self-discharge, and many cycles. Due to the above characteristics, lithium-ion batteries are widely used in many civil and military fields such as mobile phones, laptops, tablet computers, etc.

[0003] The soft-pack cell packaging process of lithium-ion batteries involves steps such as punching the shell with aluminum-plastic film, placing the bare cell, and top / side sealing / degassing packaging. In order to ensure the size of the cell, it is necessary to cut and seal after the side sealing, and then go through the processes of baking, liquid injection, static, formation, degassing and packaging. However, after the seal of the existing cell is hardened, the cutting part forms a sharp right angle, which can easily pierce the main body of the cell, causing leakage and bloating, and affecting the quality. The prior art represented by Patent Publication No. CN204770108U only performs corresponding shearing on the battery pole piece inside the bare cell, and cannot solve the problem that the bare cell will form a right angle at the cutting part after the seal is hardened.

[0004] Therefore, a technical solution is urgently needed to solve the defects in the prior art. Utility Model Content

[0005] One of the purposes of the utility model is to propose a cutting structure to address the deficiencies of the prior art, which can perform arc-shaped cutting on the sealing edge of a bare battery cell to avoid forming a right-angle sealing edge.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A cutting knife comprises a base body and an adjusting device arranged on the base body, wherein the adjusting device is connected to two correspondingly arranged cutting knives;

[0008] The cutting knife comprises a connecting body connected with the adjusting device and a cutting body connected with the connecting body. The cutting body is arranged as an arc structure, or the connecting body and the cutting body are arranged as an arc structure in combination.

[0009] The cutting knife proposed by the utility model has the following technical effects:

[0010] The cutting knife of the present application can cut the seal of the bare battery cell after formation into an arc shape, thereby effectively avoiding the abnormality of the seal edge piercing the battery cell body during the manufacturing process and improving the quality of the battery cell. Specifically, the cutting body is set as an arc structure, or the connector and the cutting body are combined into an arc structure, which can form an arc-shaped incision during cutting to avoid damage to the battery cell body by a right-angle incision. In addition, the setting of the adjustment device allows the cutting knife to be flexibly adjusted to meet the cutting needs of batteries of different sizes, thereby improving the versatility and practicality of the cutting knife.

[0011] Meanwhile, the cutting knife of the utility model has a simple structure, is easy to manufacture and maintain, has low cost, is suitable for large-scale production and use. In addition, the cutting knife has a long service life and can be reused, which reduces resource waste and environmental pollution and meets the requirements of sustainable development.

[0012] As an improvement to the cutting knife of the utility model, the connecting body and the cutting body are an integrally formed structure, and the connecting body and the cutting body have an arc surface, and the curvature R of the arc surface satisfies the relationship: 0.5π <R<π。

[0013] As an improvement to the cutting knife of the utility model, the radian R of the arc surface is 0.7-0.8π.

[0014] As an improvement to the cutting knife of the utility model, the cutting knife has a blade, and the blade is arranged in a conical structure.

[0015] As an improvement to the cutting knife of the utility model, the adjustment device includes a clamping groove which is built in the base and parallel to the edge thereof, and a clamping piece which is matched and connected to the clamping groove, and the connecting body is connected to the clamping piece.

[0016] As an improvement to the cutting knife of the utility model, the connecting body can be rotatably connected to the clamping piece.

[0017] As an improvement to the cutting knife of the utility model, the card slot has a plurality of card holes arranged in an array and interconnected.

[0018] As an improvement to the cutting knife of the utility model, the adjustment device includes a plurality of array-arranged clamping protrusions fixedly arranged on the base and parallel to its edge, and the connector has a clamping hole matching each clamping protrusion, and the clamping hole is cooperatively connected with the clamping protrusion.

[0019] As an improvement to the cutting knife of the utility model, the adjustment device includes a plurality of array-arranged through holes disposed on the base and parallel to its edge, and the connector has a connecting pin matching each through hole, and the connecting pin is cooperatively connected with the through hole.

[0020] The second purpose of the present invention is to provide a cutting device to further improve the working stability of the cutting knife of the present invention.

[0021] A cutting knife device comprises a workbench, a positioning device and the aforementioned cutting structure. A bare cell is positioned on the workbench by the positioning device, and the cutting knife is adjusted in position by the adjusting device to cut the bare cell.

[0022] The cutting device proposed by the utility model has the following technical effects:

[0023] The cutting device can place the bare battery cell to be cut on the workbench through the setting of the workbench, and then adjust the position and angle of the cutting knife through the adjustment device to adapt to the cutting needs of bare batteries of different sizes and shapes. When the cutting knife is cutting, since the cutting body is set as an arc structure or the connecting body and the cutting body are combined to form an arc structure, an arc-shaped incision can be formed to avoid damage to the battery body by a right-angle incision.

[0024] In addition, the cutting device has a simple structure, is easy to manufacture and maintain, has low cost, and is suitable for large-scale production and use. At the same time, the cutting device has a long service life and can be reused, which reduces resource waste and environmental pollution and meets the requirements of sustainable development. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The schematic implementation of the present invention and its description are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0026] Figure 1 This is a schematic structural diagram of the cutting structure of implementation mode 1 of the present utility model;

[0027] Figure 2 This is a schematic structural diagram of a connector according to Embodiment 1 of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of another type of connector in implementation mode 1 of the present utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the blade of Embodiment 3 of the present utility model;

[0030] Figure 5 It is a schematic cross-sectional structure diagram of an adjustment device according to Embodiment 4 of the present utility model;

[0031] Figure 6 It is a top view of the adjustment device of embodiment 7 of the present utility model;

[0032] Figure 7 It is a side view of the card protrusion of embodiment 7 of the utility model;

[0033] Figure 8A top view of a cutting knife according to Embodiment 7 of the present invention;

[0034] Fig. 9 It is a longitudinal sectional view of an adjustment device according to Embodiment 8 of the present utility model;

[0035] Fig.10 This is a schematic diagram of the structure of implementation mode 9 of the present utility model;

[0036] Fig.11 This is a working state diagram of implementation mode 9 in the present utility model.

[0037] in:

[0038] 100-cutting structure;

[0039] 1-matrix;

[0040] 11-Adjustment device;

[0041] 111-card slot;

[0042] 1111-card connection hole; 1112-card protrusion;

[0043] 1113-through hole;

[0044] 112-Cards;

[0045] 12-functional hole; 2-cutting knife;

[0046] 21-connector;

[0047] 211-connection substrate;

[0048] 212-connecting pin;

[0049] 213-Card hole;

[0050] 22-cut body;

[0051] 221-Blade;

[0052] 3- Workbench;

[0053] 31-cutting position; 4-positioning device;

[0054] 41-bolt;

[0055] 42-screw head;

[0056] 43-nut;

[0057] 44- elastic component;

[0058] 5-Bare Cell

[0059] R - radians. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0061] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific implementation methods and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0062] Reference to "embodiment" in this application means that a particular feature, structure or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0063] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0064] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0065] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0066] The present invention will be further described in detail below in conjunction with the accompanying drawings, but the present invention is not limited thereto.

[0067] Implementation Method 1

[0068] like Figure 1 As shown, the cutting structure 100 of the present application includes a base 1 and an adjustment device 11 disposed on the base 1, and the adjustment device 11 is connected to two correspondingly disposed cutting knives 2. The base 1 is the base of the entire cutting knives 2, as shown in the attached figure of the present application. Figure 1 The base 1 shown in the figure is designed in a square shape. In order to ensure the safety and convenience of the user during use and prevent the user from being injured by the sharp corners of the base 1, the corners of the base 1 can be designed into arcs or other shapes with equivalent effects. In a specific embodiment, the base 1 of the present application is also provided with functional holes 12 for connecting with other devices, such as being assembled on a machine tool, or for installing the adjustment device 11 of the cutting structure 100. The number and position of these functional holes 12 are designed according to actual needs to meet the working requirements of the cutting structure 100.

[0069] In the design of the cutting structure 100 of the present application, the function of the adjustment device 11 is to adjust the distance between the two cutting knives 2 to meet the cutting requirements of bare cells 5 of different widths. When the adjustment device 11 is connected to the base 1 in an assembly form, it can be fixed with bolts, screws or other parts that can achieve the same fastening effect. This design method is based on the fact that the utility model is mainly used for cutting bare cells 5, and multiple cutting may cause unpredictable factors to damage the adjustment device 11. Therefore, it is designed to be replaceable, although some stability may be sacrificed, but the safety of the entire device can be ensured. If the adjustment device 11 is used as a fixed part of the base 1, although it cannot be replaced, it can ensure stability during use and reduce errors and unstable factors caused by frequent replacement of the adjustment device 11.

[0070] In addition, the specific implementation of the adjustment device 11 can be selected according to actual needs, for example, the adjustment of the cutting knife 2 can be achieved by rotation, sliding (by embedding a pulley in the adjustment device 11 and designing a corresponding stop position device), etc. The two corresponding cutting knives 2 designed and connected to the adjustment device 11 can be the same or different, and the specific selection is determined according to actual needs. The blade 221 of the cutting knife 2 should have sufficient hardness and sharpness to ensure the cutting effect.

[0071] Secondly, the cutting blade 2 includes a connecting body 21 connected to the adjusting device 11 and a cutting body 22 connected to the connecting body 21. The cutting body 22 is configured as an arc structure, or the connecting body 21 and the cutting body 22 are configured as an arc structure in combination.

[0072] like Figure 2 As shown, the cutting body 22 is the key part for actually performing the cutting operation of the bare battery cell 5. It is connected to the connecting body 21 of different shapes by splicing, clamping, welding or other appropriate methods to ensure that the entire cutting blade 2 works stably on the adjustment device 11 of the base 1. Figure 2 The connecting body 21 shown includes a connecting base 211 and a connecting pin 212. Here, a square is used as an example to illustrate its structure, but it can also be designed into other shapes with a connecting pin 212 as needed. The connecting pin 212 is fixed to the outer side of the connecting body 21 and is used to establish a connection with the adjustment device 11. Its connection method is not limited to threaded connection.

[0073] In a specific implementation, the connecting base 211 and the cutting body 22 can form an arc-shaped structure (eg Figure 1 As shown in the figure, this design can ensure the cutting effect while making the structure of the cutting knife 2 more compact. The connection between the connecting body 21 and the cutting body 22 can be welded or bolted to ensure the firmness and stability of the connection.

[0074] Specifically, the connection surface of the connection pin 212 can be designed into various shapes that are suitable for connection with the adjustment device 11, not limited to a cylindrical shape. Figure 3 As shown, the connection surface of the connecting pin 212 can also be consistent with the connection surface of the connecting base 211, and the adjusting device 11 selects a matching connection method. This design not only ensures the stability of the connection, but also makes the design of the connecting pin 212 more flexible, so that the cutting knife 2 with different types of connecting bodies 21 can be produced according to customer needs during production.

[0075] Implementation Method 2

[0076] like Figure 1As shown, different from Embodiment 1: The connecting body 21 and the cutting body 22 in this embodiment are of an integrally formed structure. The connecting body 21 and the cutting body 22 have a circular arc surface, and the radian R of the circular arc surface satisfies the relation: 0.5π < R < π. Its radian represents the numerical value of the radian R of the arc surface of the cutting surface. In other embodiments, the radian R can be adjusted according to actual needs, specifically, it can be 0.55π, 0.6π, 0.7π, 0.8, 0.9π to meet different application scenarios. Additionally, in other embodiments, such as Figure 2 and Figure 4 shown, the connecting body 21 and the cutting body 22 can also be set as a split structure.

[0077] Specifically, the radian R of the circular arc surface is 0.7 - 0.8π. Preferably, the radian R of the circular arc surface formed by the connecting body 21 and the cutting body 22 is 0.7π. In a specific embodiment, the design of this radian R can ensure that during the cutting process, the cutting knife 2 cuts the bare battery cell 5 more precisely and smoothly, avoiding problems such as uneven cutting or over-cutting caused by too large or too small an angle. The radian design of 0.7π can improve the cutting efficiency while ensuring the cutting quality. This is because this radian can not only ensure the stability of the cutting knife 2 during the cutting process but also enable the cutting knife 2 to quickly reset after cutting to prepare for the next cutting. In addition, considering that the cutting knife 2 will be affected by various stresses during use, the radian design of 0.7π can reduce stress concentration to a certain extent, thereby prolonging the service life of the cutting knife 2.

[0078] Others are the same as Embodiment 1 and will not be elaborated here.

[0079] Embodiment 3

[0080] As Figure 2 and 4 shown, different from Embodiment 1: The cutting knife 2 shown in this embodiment has a cutting edge 221, and the cutting edge 221 is set as a conical structure. Wherein the projection of the cutting edge 221 on the bottom surface of the cutting body 22 coincides with the projection on the bottom surface of the cutting body 22, or the projection of the cutting edge 221 on the bottom surface of the cutting body 22 intersects with the edge of the bottom surface of the cutting body 22. This conical structure design makes the cutting edge 221 sharper, improving the cutting precision and efficiency. At the same time, the setting position of the cutting edge 221 also ensures the stability of the cutting knife 2 during the cutting process, avoiding problems such as inaccurate cutting or over-cutting caused by improper position of the cutting edge 221.

[0081] In a specific embodiment, the projection of the blade 221 is consistent with the projection of the bottom surface of the cutting body 22, which means that the shape of the blade 221 completely matches the shape of the bottom surface of the cutting body 22. This design method can ensure that the cutting knife 2 can accurately align with the cutting position 31 during the cutting process, thereby improving the cutting accuracy. On the other hand, the projection of the blade 221 intersects with the edge of the bottom surface of the cutting body 22, which means that the position of the blade 221 is at the edge of the bottom surface of the cutting body 22. This design method can ensure that the cutting knife 2 can better adapt to the cutting requirements of bare cells 5 of different widths during the cutting process, thereby improving the flexibility and efficiency of cutting.

[0082] In a specific embodiment, the blade 221 can be biased toward one side of the inner circle of the cutting body 22 or toward one side of the outer circle of the cutting body 22, so that the cutting direction and angle can be adjusted according to actual needs, making the cutting more flexible and accurate. At the same time, the biased design of the blade 221 can also reduce the resistance generated during the cutting process to a certain extent, thereby improving the cutting efficiency.

[0083] In addition, in order to further improve the cutting effect and service life of the cutting knife 2, the present application can coat a layer of wear-resistant material, such as ceramic, diamond, etc., on the blade 221. These materials have excellent wear resistance and can effectively reduce the wear of the blade 221 during the cutting process, thereby extending the service life of the cutting knife 2.

[0084] The rest is the same as Implementation 1 and will not be described again here.

[0085] Implementation 4

[0086] like Figure 6 As shown, the difference from Embodiment 1 is that the adjustment device 11 of this embodiment includes a slot 111 provided inside the base 1 and parallel to the edge thereof, and a clamping member 112 matched and connected to the slot 111 , and the connecting body 21 is connected to the clamping member 112 .

[0087] This design makes the connection between the cutting blade 2 and the adjustment device 11 more stable and reliable. Figure 5As shown, the card slot 111 is arranged on the inner side of the base 1 and is parallel to the edge of the base 1, so that the card 112 can be accurately inserted into the card slot 111, thereby achieving a stable connection between the connector 21 and the base 1. The design of the card 112 can be selected according to specific needs, and can be a rectangular, triangular or other shape to meet different connection requirements. The connector 21 establishes a stable connection relationship with the base 1 through the connection between the card 112 and the card slot 111, thereby ensuring the stability and accuracy of the cutting knife 2 during the cutting process. This design also provides great flexibility, allowing the cutting knife 2 to be fixed at different positions of the base 1. Before the connector 21 is connected to the tightest, the card 112 can slide in the card slot 111, so that the cutting knife 2 can be fine-tuned along the direction of the card slot 111. This fine-tuning function is very useful in scenarios where the cutting position needs to be precisely controlled. For example, when cutting materials of different sizes, a more precise cutting effect can be achieved by adjusting the position of the cutting knife 2.

[0088] In addition, this design also has the advantage of being easy to replace the cutting blade 2. When the cutting blade 2 needs to be replaced, it is only necessary to pull the clamp 112 out of the clamp slot 111, and then connect the new cutting blade 2 to the base body 1 through the clamp 112, which is simple and quick to operate.

[0089] In a specific embodiment, the design of the slot 111 and the clamp 112 also needs to take into account the tightness and stability of the connection to ensure that the cutting blade 2 will not become loose or fall off during the cutting process. At the same time, the materials of the slot 111 and the clamp 112 also need to have certain wear resistance and corrosion resistance to ensure the service life and stability of the cutting blade 2.

[0090] Specifically, Figure 5 The connector 21 shown can be rotatably connected to the clamp 112 . By designing the clamp 112 to be a threaded structure, the connector 21 having the same matching threaded structure can be rotatably connected to the clamp 112 .

[0091] Specifically, the card slot 111 also has a plurality of card holes 1111 arranged in an array and interconnected, and has the advantage of being able to adaptably change the spacing between the two cutting knives 2 according to the battery size, which facilitates production. This design further enhances the connection stability between the cutting knife 2 and the adjustment device 11. The presence of the card holes 1111 allows the card member 112 to be more firmly connected through the array arrangement of the holes when inserted into the card slot 111. After the card member 112 is inserted into the card slot 111, the cooperation between the card hole 1111 and the card member 112 can ensure that when the connector 21 rotates, the card member 112 will not shift or loosen, thereby ensuring the stability and accuracy of the cutting knife 2 during operation.

[0092] In addition, the design of the clamping hole 1111 also has a certain buffering effect. During the cutting process, the cutting knife 2 is subjected to a certain impact force, and this impact force may be transmitted to the connecting body 21 and the clamping member 112. The existence of the clamping hole 1111 can absorb part of the impact force, reduce the damage to the connecting body 21 and the clamping member 112, and thus extend their service life.

[0093] In addition, the array of snap-in holes 1111 can also increase the contact area between the connector 21 and the snap member 112, making the connection more uniform and stable. This design can also effectively prevent the connector 21 from generating excessive friction when rotating, making the cutting blade 2 smoother and more flexible during adjustment.

[0094] Implementation method 5

[0095] like Figure 6 As shown, the difference from Embodiment 1 is that the cutting knife 2 of this embodiment further includes a temperature sensing device. The temperature sensing device can monitor the temperature generated by the cutting knife 2 during use in real time. When the temperature exceeds a preset safety threshold, the temperature sensing device will send a warning signal to prompt the operator to stop using the cutting knife 2 in time to avoid damage or safety problems caused by excessive temperature.

[0096] In a specific embodiment, the temperature sensing device can be arranged at a key position of the cutting knife 2, such as near the blade 221 or on the connecting body 21, so that the temperature generated by the cutting knife 2 during operation can be more accurately monitored. At the same time, in order to ensure the accuracy and stability of the temperature sensing device, it is necessary to select a temperature sensor with high temperature tolerance and high sensitivity.

[0097] In addition, in order to improve the durability and service life of the cutting knife 2, the present application can also coat a layer of heat resistance material on the surface of the cutting knife 2, which can effectively reduce the heat generated by the cutting knife 2 during operation, thereby protecting the cutting knife 2 from damage.

[0098] The rest is the same as Implementation 1 and will not be described again here.

[0099] Implementation 6

[0100] like Figure 1 As shown, the difference from the first embodiment is that the cutting knife 2 of this embodiment can also be equipped with an intelligent control system. The intelligent control system can automatically adjust the parameters such as the cutting angle, speed and force of the cutting knife 2 according to the parameters such as the size, shape and cutting requirements of the bare battery cell 5 to achieve the best cutting effect.

[0101] In a specific implementation, the intelligent control system can communicate with the sensor on the cutting knife 2 to obtain various parameter information of the cutting process in real time, such as cutting speed, cutting force, cutting angle, etc., and automatically adjust the working state of the cutting knife 2 according to these parameter information to achieve the best cutting effect.

[0102] In addition, the intelligent control system can also automatically perform fault detection and early warning according to the actual situation during the cutting process. When the cutting knife 2 shows abnormal conditions such as wear, looseness or overtemperature, the intelligent control system will promptly issue a warning signal to prompt the operator to take timely action, thereby ensuring the stability and safety of the cutting process.

[0103] The rest is the same as Implementation 1 and will not be described again here.

[0104] Implementation 7

[0105] like Figure 7 As shown, the difference from Implementation 1 is that the adjustment device 11 of this implementation includes a plurality of array-arranged latching protrusions 1112 fixedly disposed on the base 1 and parallel to its edge, and the connector 21 has a latching hole 213 matching each latching protrusion 1112 , and the latching hole 213 is cooperatively connected with the latching protrusion 1112 .

[0106] Specifically, if Figure 7 As shown, a plurality of array-arranged protrusions 1112 are fixedly disposed on the substrate 1 and are parallel to the edge of the substrate 1. The design of the protrusions 1112 can be determined according to the specific needs of the cutting blade 2, such as shape, size and spacing, to meet different adjustment requirements. Figure 8 As shown, the connector 21 has a hole 213 matching each protrusion 1112 , and the design of the hole 213 also needs to take into account the matching and stability with the protrusion 1112 to ensure that the connector 21 can be firmly connected to the protrusion 1112 .

[0107] In addition, the protrusions 1112 are spaced apart and have a certain spacing, and the spacing is designed to be large enough to accommodate the movement space of the cutting blade 2 when the cutting blade 2 is threadedly rotated around the hole 213. When the cutting blade 2 is threadedly rotated, it can smoothly rotate around the hole 213 without being disturbed by the protrusions 1112. This design ensures the stability and smoothness of the cutting blade 2 during the rotational connection process.

[0108] By designing the matching mode of the clamping protrusions 1112 and the clamping holes 213, the connector 21 can be flexibly adjusted in the arrangement direction of the clamping protrusions 1112. When the position or angle of the cutting blade 2 needs to be adjusted, it is only necessary to align and insert the clamping holes 213 on the connector 21 with the corresponding clamping protrusions 1112, and then fix the connector 21. This design mode not only simplifies the adjustment process, but also improves the accuracy and stability of the adjustment.

[0109] In addition, the plurality of array-arranged latches 1112 can also increase the contact area between the connector 21 and the substrate 1, making the connection more uniform and stable. This design can also effectively prevent the connector 21 from generating excessive friction during the adjustment process, making the cutting blade 2 smoother and more flexible during the adjustment process. In addition, the design of the latch 1112 and the latch hole 213 also has a certain buffering effect. During the cutting process, since the cutting blade 2 will be subjected to a certain impact force, this impact force may be transmitted to the connector 21. The presence of the latch 1112 and the latch hole 213 can absorb part of the impact force, reduce damage to the connector 21, and thus extend its service life.

[0110] Implementation 8

[0111] like Figure 1 and Fig. 9 As shown, the difference from Embodiment 1 is that the adjustment device 11 of this embodiment includes a plurality of arrayed through holes 1113 arranged on the substrate 1 and parallel to its edge, and the connector 21 has a connecting pin 212 matching each through hole 1113, and the connecting pin 212 is matched and connected with the through hole 1113. Specifically, the above-mentioned through hole 1113 can be set to an internal thread structure corresponding to the connecting pin 212. By providing a connecting pin 212 with an external thread structure, it can be rotated in the internal thread structure of the through hole 1113 until it is tightly combined. This design method allows the position of the cutting knife 2 on the substrate 1 to be more flexibly adjusted to meet the cutting requirements of bare cells 5 of different sizes and shapes. Specifically, the through holes can be set to multiple, arranged in an array at a certain spacing on the edge of the substrate 1, and the connecting pins 212 on the connector 21 can be matched and connected with these through holes 1113. Since the through holes 1113 are arranged in an array, the connector 21 can be adjusted in the arrangement direction of the through holes 1113, thereby realizing flexible positioning of the cutting blade 2 on the substrate 1. This design not only improves the adaptability of the cutting blade 2, but also makes the cutting operation more convenient and quick.

[0112] In a specific implementation, the number and spacing of the through holes 1113 can be adjusted according to actual needs to meet the cutting requirements in different scenarios. At the same time, in order to ensure the connection stability between the connecting pin 212 and the through hole 1113, a certain matching gap can be set between the connecting pin 212 and the through hole, so that the connecting pin 212 can be smoothly inserted into the through hole 1113, and the stability of the connecting pin 212 in the through hole can be ensured, so as to avoid problems such as falling off or shaking during the cutting process.

[0113] The rest is the same as Implementation 1 and will not be described again here.

[0114] Implementation method 9

[0115] like Figure 1-9 As shown, this embodiment discloses a cutting device, including a workbench 3, a positioning device 4 and a cutting structure 100 described in any one of embodiments 1 to 8, as shown in FIG. Fig.10 The bare cell 5 is positioned on the workbench 3 by the positioning device 4, and the cutting knife 2 is adjusted to cut the bare cell 5 by the adjusting device 11. The positioning device 4 is used to position the bare cell 5 to ensure that the cutting knife 2 can accurately cut to the specified position of the bare cell 5. The adjusting device 11 is connected to two correspondingly arranged cutting knives 2, and the workbench 3 is arranged under the cutting knife 2 and connected to the adjusting device 11.

[0116] The positioning device 4 is connected to the workbench 3 through the screw head 42. The positioning device 4 also includes an elastic component 44. The elastic component 44 is sleeved on the bolt 41 of the positioning device 4 passing through the functional hole 12, and a nut 43 is connected to the top of the bolt 41. The radius of the nut 43 is larger than the radius of the functional hole 12. When the nut 43 is tightened, the elastic component 44 is compressed, generating a certain elastic force, and the cutting knife 2 can rebound immediately after completing the downward cutting work. This design can facilitate the staff to prepare for the next cutting. In addition, since the radius of the nut 43 is larger than the radius of the functional hole 12, the nut 43 cannot pass through the functional hole 12, so that the nut 43 is stably fixed on the base 1, further improving the connection stability.

[0117] In a specific implementation, the elastic component 44 can be made of a material with certain elasticity and wear resistance, such as a spring, rubber, etc. Through this design, the cutting knife 2 device of the present application can accurately position and stably fix the bare battery cell 5, thereby improving the cutting accuracy and product quality. At the same time, by adopting the design of components such as the elastic component 44 and the nut 43, the connection stability and service life between the positioning device 4 and the workbench 3 are enhanced, providing a more reliable and efficient cutting solution for the production of lithium batteries.

[0118] Specifically, a cutting position 31 is distributed on one side of the workbench 3 corresponding to the cutting knife 2. The shape of the cutting position 31 corresponds to the shape and size of the cutting knife 2, so that the cutting effect is more accurate.

[0119] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. Fig.11 As shown, the cutting knife 2 of the present application can be aligned with the sealing side of the bare battery cell 5 for cutting. In embodiment 1, by adjusting the position of the device 11 on the substrate 1, the cutting knife 2 can accurately cut to the sealing side of the bare battery cell 5, thereby realizing the accurate cutting of the bare battery cell 5 into a circular arc sealing angle. This design method not only improves the cutting accuracy, but also ensures the cutting quality, making the production process of lithium batteries more efficient and reliable. At the same time, through the design of the adjustment device 11, it is also possible to achieve flexible adjustment of the angle and position of the cutting knife 2 to meet the cutting requirements of bare batteries 5 of different sizes and shapes, further improving the adaptability and flexibility of the cutting knife 2. In the above embodiment, the number, shape, size, etc. of the cutting knife 2 can also be adjusted according to actual needs to meet the cutting requirements in different scenarios.

[0120] The above are only preferred implementations of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A cutting structure, characterized in that: It comprises a base body (1) and an adjustment device (11) arranged on the base body (1), wherein the adjustment device (11) is connected to two correspondingly arranged cutting knives (2); The cutting knife (2) comprises a connecting body (21) connected to the adjusting device (11) and a cutting body (22) connected to the connecting body (21); the cutting body (22) is arranged as an arc-shaped structure, or the connecting body (21) and the cutting body (22) are arranged as an arc-shaped structure in combination.

2. The cutting structure according to claim 1, characterized in that: The connecting body (21) and the cutting body (22) are an integrally formed structure, and the connecting body (21) and the cutting body (22) form an arc surface, and the radian R of the arc surface satisfies the relationship: 0.5π <R<π。 3. The cutting structure according to claim 2, characterized in that: The radian R of the arc surface is 0.7-0.8π.

4. The cutting structure according to claim 1, characterized in that: The cutting knife (2) has a blade (221), and the blade (221) is arranged in a conical structure.

5. The cutting structure according to claim 1, characterized in that: The adjustment device (11) comprises a slot (111) disposed inside the base (1) and parallel to an edge thereof, and a clamping piece (112) matched and connected to the slot (111), and the connecting body (21) is connected to the clamping piece (112).

6. The cutting structure according to claim 5, characterized in that: The connecting body (21) is rotatably connected to the clamping member (112).

7. The cutting structure according to claim 5, characterized in that: The card slot (111) has a plurality of card holes (1111) arranged in an array and interconnected.

8. The cutting structure according to claim 1, characterized in that: The adjustment device (11) comprises a plurality of array-arranged latching protrusions (1112) fixedly disposed on the base (1) and parallel to the edge thereof; the connector (21) comprises a latching hole (213) matching each of the latching protrusions (1112); the latching hole (213) is cooperatively connected with the latching protrusions (1112).

9. The cutting structure according to claim 1, characterized in that: The adjustment device (11) comprises a plurality of array-arranged through holes (1113) provided on the base (1) and parallel to the edge thereof, and the connecting body (21) comprises a connecting pin (212) matching each of the through holes (1113), and the connecting pin (212) is cooperatively connected with the through holes (1113).

10. A cutting device, characterized in that: It comprises a workbench (3), a positioning device (4) and a cutting structure (100) as described in any one of claims 1 to 9, wherein the bare battery cell (5) is positioned on the workbench (3) by the positioning device (4), and the cutting knife (2) is adjusted in position by the adjusting device (11) to cut the bare battery cell (5).

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