A cutting device and a battery production apparatus

Abstract

The application discloses a cutting device and a battery production equipment. The cutting device comprises a cutting member and an auxiliary member. The cutting member is configured to cut a to-be-cut member located in a cutting area. The auxiliary member comprises a jetting part and a suction part. The jetting part is formed with a jetting channel, an air inlet and a jetting port. The jetting channel is configured to blow a protective gas towards the cutting area through the jetting port. The suction part is configured to suck the to-be-cut member when the cutting member cuts the to-be-cut member. In this way, the cutting quality and the cutting precision of the cutting device on the to-be-cut member can be improved.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and in particular to a cutting device and battery manufacturing equipment. Background Technology

[0002] With the booming development of the new energy industry, the technological requirements for new energy batteries are becoming increasingly complex. During battery manufacturing, materials such as electrodes and separators need to be cut with high precision.

[0003] During battery production, the cutting device generates high temperatures when cutting materials (such as electrodes). This can cause oxidation reactions between the cut surfaces and oxygen in the air, affecting the quality of the cut materials and the performance of the produced batteries. Utility Model Content

[0004] The main objective of this application is to provide a cutting device and battery production equipment, which aims to solve the technical problem in the related art that the cutting surface may undergo an oxidation reaction with oxygen in the air, affecting the quality of the cut material and the performance of the produced battery.

[0005] To address the aforementioned problems, this application provides a cutting apparatus comprising a slitting component and an auxiliary component. The slitting component is configured to cut a workpiece located in a cutting area. The auxiliary component includes a jetting section and an adsorption section. The jetting section forms a jetting channel and an air inlet and a jet outlet communicating with the jetting channel. The jetting channel is configured to blow protective gas towards the cutting area through the jet outlet. The adsorption section is configured to adsorb the workpiece to be cut when the slitting component cuts it. Thus, when the slitting component cuts the workpiece in the cutting area, the jetting component can spray protective gas towards the cutting area through the jetting channel and the jet outlet, and the protective gas can cover at least a portion of the cutting area. This reduces the contact between the cutting surface and oxygen in the air, reduces oxidation reactions on the cutting surface, reduces contamination of the cutting surface by slag or fumes, and improves cutting quality. When the slitting component is in operation, the adsorption section can adsorb the workpiece to be cut, thereby stabilizing the workpiece, reducing vibration and displacement of the workpiece during the cutting process, and improving the cutting accuracy of the slitting component. When this cutting apparatus is applied to battery production, it can improve the performance of the produced batteries.

[0006] In some embodiments, the adsorption unit has an air intake channel and an air intake port and an air outlet communicating with the air intake channel, the air intake port being configured to face the workpiece to be cut. Thus, the adsorption unit can draw air through the air intake channel to generate a negative pressure on one side of the workpiece to be cut, thereby adsorbing the workpiece. When the slitting component cuts the workpiece, the adsorption unit can stabilize the workpiece by generating negative pressure, thereby improving the cutting accuracy of the slitting component.

[0007] In some embodiments, the jet nozzle and the intake port are oriented differently. The jet nozzle of the jet section is used to eject protective gas, and the intake port of the suction section is used to draw in air. The two are oriented differently, thereby reducing airflow interference between the jet nozzle and the intake port.

[0008] In some embodiments, the adsorption section and the jetting section are integrally molded to form a single structure. This integrated structure enhances the overall strength and rigidity of the auxiliary component and improves vibration resistance. Furthermore, it reduces the number of assembly parts in the cutting device, lowering assembly and maintenance costs.

[0009] In some embodiments, the air jet and the air intake are located on different sides of the integral structure. Since the air jet and the air intake are located on different sides of the auxiliary component, when the air intake adsorbs the workpiece to be cut, the workpiece contacts the side of the auxiliary component with the air intake, which does not affect the air jet operation and reduces mutual interference between the two.

[0010] In some embodiments, the suction port includes a plurality of sub-inlet holes arranged in an array; the distance between two adjacent sub-inlet holes along a first direction is less than the length of the workpiece to be cut along the first direction, wherein the first direction is perpendicular to the arrangement direction of the adsorption part and the workpiece to be cut. Thus, the array of sub-inlet holes can form a "negative pressure matrix," which can reduce adsorption deformation and the problem of "central collapse" for easily deformable materials. Furthermore, the small distance between adjacent sub-inlet holes and the large width of the workpiece to be cut mean that the workpiece to be cut will not be entirely located between adjacent sub-inlet holes; at least some sub-inlet holes will act on the workpiece to be cut, reducing the risk of leakage due to positional fluctuations of the workpiece to be cut and improving the reliability of the adsorption part.

[0011] In some embodiments, the intake port and the outlet port are located on different sides of the adsorption section. This increases the adsorption area on the intake port side and improves the adsorption uniformity on the adsorption side.

[0012] In some embodiments, the adsorption unit includes a magnet configured to generate a magnetic field to attract the workpiece to be cut. The adsorption unit magnetically attracts the workpiece by generating a magnetic field. When the workpiece is being cut, the magnet magnetically attracts it, thereby stabilizing the workpiece, reducing vibration and displacement during cutting, improving the cutting accuracy, and enhancing the quality of the cut workpiece. Furthermore, this method results in a simple cutting device with low cost.

[0013] In some embodiments, the jet nozzle includes a plurality of sub-jet holes, which are arranged sequentially at intervals along a second direction, wherein the second direction is perpendicular to the arrangement direction of the jet section and the workpiece to be cut. Thus, by discretizing and precisely controlling the flow, airflow waste can be reduced, and the uniformity of the airflow ejection can be improved.

[0014] In some embodiments, the jet nozzle extends along a second direction, which is perpendicular to the arrangement direction of the jet section and the workpiece to be cut. This simplifies the structure of the jet section, reduces processing difficulty, and minimizes the risk of the jet nozzle becoming clogged with dust.

[0015] In some embodiments, the jet nozzle and the air inlet are located at opposite ends of the jet section. This reduces interference between the jet nozzle and the air inlet. Furthermore, locating the jet nozzle and the air inlet on opposite sides increases the length of the jet passage and allows for the construction of a through-type straight flow channel, improving the stability of the airflow output from the jet section.

[0016] In some embodiments, the jet channel includes a first connecting channel, a first buffer chamber, and a second connecting channel. One end of the first connecting channel is connected to the air inlet, and the other end of the first connecting channel is connected to the first buffer chamber. One end of the second connecting channel is connected to the first buffer chamber, and the other end of the second connecting channel is connected to the jet outlet. This simplifies the composition of the jet channel, reduces the structure of the jet section, and lowers the manufacturing difficulty of the jet section.

[0017] In some embodiments, the jet passage includes at least two buffer chambers. These buffer chambers, acting as airflow transfer stations, effectively reduce turbulence or pressure fluctuations in the protective gas input to the inlet, resulting in a smoother output airflow and more uniform ejection of gas. Multiple buffer chambers can gradually adjust the airflow state, reducing turbulence caused by direct impact. Furthermore, the expansion and deceleration of the airflow through multiple buffer chambers reduces high-frequency whistling noise.

[0018] In some embodiments, the jet passage includes a second buffer chamber, a third buffer chamber, a fourth buffer chamber, a third connecting channel, a fourth connecting channel, a fifth connecting channel, and a sixth connecting channel. One end of the third connecting channel is connected to the air inlet, and the other end is connected to the second buffer chamber. Similarly, one end of the fourth connecting channel is connected to the second buffer chamber, and the other end is connected to the third buffer chamber. One end of the fifth connecting channel is connected to the third buffer chamber, and the other end is connected to the fourth buffer chamber. One end of the sixth connecting channel is connected to the fourth buffer chamber, and the other end is connected to the jet outlet. Thus, all three buffer chambers can serve as airflow transfer stations for the protective gas, effectively reducing turbulence or pressure fluctuations in the protective gas input to the air inlet, resulting in a smoother output airflow and more uniform gas distribution.

[0019] In some embodiments, the slitting part includes a laser cutting head configured to emit a laser beam toward the cutting area. The focused laser beam has a small spot diameter, suitable for high-precision pattern cutting. Furthermore, laser cutting is a non-contact process, which reduces material deformation or edge burrs on the part to be cut.

[0020] This application also provides a battery production apparatus, which includes a conveyor and a cutting device according to any of the above embodiments. The conveyor is configured to support and convey a workpiece to be cut, and the cutting device is located on one side of the conveyor and configured to cut the workpiece in the cutting area. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a battery production equipment provided in some embodiments of this application;

[0023] Figure 2 This is a schematic diagram of the structure of a cutting device provided in some embodiments of this application;

[0024] Figure 3 yes Figure 2 A schematic diagram of the first structure of the auxiliary components and the cutting area in the cutting device shown;

[0025] Figure 4 yes Figure 2 The diagram shows the second structure of the auxiliary component in the cutting device.

[0026] Figure 5 This is a schematic diagram of the structure of a cutting device provided in some other embodiments of this application;

[0027] Figure 6 yes Figure 5 Enlarged structural diagram at point A in the middle circle;

[0028] Figure 7 yes Figure 5 A schematic diagram of the first structure of the auxiliary component in the cutting device shown;

[0029] Figure 8 yes Figure 7 A side view of the auxiliary component shown.

[0030] Figure 9 yes Figure 8 A schematic diagram of the first structure of the jet nozzle in the auxiliary component shown;

[0031] Figure 10 yes Figure 8 The diagram shows the second structure of the jet nozzle in the auxiliary component.

[0032] Figure 11 yes Figure 5 The diagram shows the second structure of the auxiliary component in the cutting device.

[0033] Reference numerals: 10. Cutting device; 11. Slitting part; 12. Auxiliary part; 121. Jet jet section; 122. Adsorption section; 20. Part to be cut; 30. Conveying part; 31. Conveying roller; 101. Jet jet channel; 102. Air inlet; 103. Jet jet nozzle; 104. Suction channel; 105. Suction port; 106. Air outlet; 107. Cutting area; 108. Sub-air inlet; 109. Sub-jet jet nozzle; 1011. First connecting channel; 1012. First buffer chamber; 1013. Second connecting channel; 1014. Second buffer chamber; 1015. Third buffer chamber; 1016. Fourth buffer chamber; 1017. Third connecting channel; 1018. Fourth connecting channel; 1019. Fifth connecting channel; 1020. Sixth connecting channel; 100. Battery production equipment. Detailed Implementation

[0034] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0036] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0037] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0038] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0039] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0040] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0041] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" 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. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0042] Currently, judging from market trends, battery applications are becoming increasingly widespread. Batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in aerospace and other fields. With the continuous expansion of battery applications, market demand is also constantly increasing.

[0043] The domestic battery industry is ushering in new development opportunities, with battery technology and manufacturing processes becoming key research directions. High-precision cutting is a crucial step in battery production. During battery manufacturing, materials such as positive electrode sheets, negative electrode sheets, and separators typically require cutting equipment. The localized high temperatures generated during cutting can easily cause oxidation reactions between the cut surface and oxygen in the air, forming oxide bands and resulting in defects such as heat-affected zones and molten burrs (molten beads). These defects not only directly affect the quality of the cut components but also ultimately impair the overall performance of the battery.

[0044] To address the aforementioned technical problems, this application provides a cutting device. The cutting device includes a slitting component and auxiliary components. The slitting component is configured to cut a workpiece located in a cutting area. The cutting area is the region corresponding to the slitting component where the workpiece is cut. The auxiliary components include a jetting section and an adsorption section. The jetting section forms a jetting channel and an air inlet and a jet outlet communicating with the jetting channel. The jetting channel is configured to blow protective gas towards the cutting area through the jet outlet. The adsorption section is configured to adsorb the workpiece during the slitting process. When the cutting device cuts the workpiece within the cutting area, the jetting section can spray protective gas towards the cutting area through the jetting channel and the jet outlet. By applying protective gas to the cutting area (covering part or all of the cutting area), oxygen in the air can be minimized, reducing oxidation reactions on the cut surface and thus improving the cutting quality of the workpiece. Simultaneously, the adsorption section of the cutting device can stably adsorb the workpiece during the cutting process, significantly reducing its vibration and displacement, improving cutting accuracy, and ultimately improving the quality of the finished product. When this cutting device is applied to battery production, it can improve the performance of the produced batteries.

[0045] The solution of this application will be described in detail below with reference to the accompanying drawings and embodiments.

[0046] This application provides a battery manufacturing device, such as... Figure 1 As shown, Figure 1 This is a schematic diagram of the structure of a battery production equipment provided in some embodiments of this application. The battery production equipment 100 includes a conveyor 30 and a cutting device 10, with the cutting device 10 located on one side of the conveyor 30.

[0047] The conveyor 30 is configured to support and convey the workpiece 20 to be cut. The cutting device 10 is located on one side of the conveyor 30 and is configured to cut the workpiece 20 in the cutting area.

[0048] The conveyor 30 is used to convey the workpiece 20 to be cut to the cutting area, and the cutting device 10 is used to cut the workpiece 20 that has entered the cutting area. Figure 1In the illustrated embodiment, the conveying member 30 includes a conveying roller 31, and the part to be cut 20 is a battery electrode. The conveying roller 31 is used to convey the battery electrode to the cutting area. Multiple conveying rollers 31 can be provided to release the wound electrode to the cutting area.

[0049] In the above embodiments, the part to be cut 20 can be a positive electrode sheet or a negative electrode sheet, which are materials that require high-precision cutting in battery production. In other embodiments, the part to be cut 20 can also be a battery separator or other materials.

[0050] In other embodiments, the conveyor 30 may be other conveying mechanisms, which may be configured according to the type of workpiece 20 to be cut. For example, the conveyor 30 may also be a belt conveyor structure, which is suitable for brittle materials (such as dried electrode sheets) or scenarios requiring buffering.

[0051] Batteries, as discussed in this field, can be categorized into primary batteries and rechargeable batteries based on whether they are rechargeable. Primary batteries, also known as "use-and-discard" batteries or galvanic cells, cannot be recharged after their charge is depleted and must be discarded. Rechargeable batteries, also called secondary batteries or rechargeable batteries, differ from primary batteries in their manufacturing materials and processes. Their advantage lies in their ability to be cycled multiple times after charging, and their output current capacity is higher than most primary batteries. Common types of rechargeable batteries include lead-acid batteries, nickel-metal hydride batteries, and lithium-ion batteries. Lithium-ion batteries are lightweight, have a large capacity (1.5 to 2 times that of a nickel-metal hydride battery of the same weight), no memory effect, and a very low self-discharge rate, thus enjoying widespread use despite their relatively high price. Lithium-ion batteries are also widely used in pure electric vehicles and hybrid vehicles. While the capacity of lithium-ion batteries used in these applications is relatively lower, they offer a larger output and charging current, and a longer lifespan, but at a higher cost.

[0052] The battery described in the embodiments of this application refers to a rechargeable battery or a disposable battery.

[0053] A battery may include a housing and individual battery cells, with the individual cells housed within the housing. The housing provides space for the individual battery cells. In a battery assembly, there may be multiple individual battery cells, which can be connected in series, parallel, or a combination thereof. A combination of series and parallel connections refers to multiple individual battery cells being connected in both series and parallel configurations. Multiple individual battery cells can be directly connected in series, parallel, or a combination thereof, and then the assembly is housed within the housing. Alternatively, the battery assembly can consist of multiple individual battery cells first connected in series, parallel, or a combination thereof to form battery modules, which are then connected in series, parallel, or a combination thereof to form a single assembly housed within the housing. The battery assembly may also include other structures; for example, it may include a busbar for electrical connection between the multiple individual battery cells.

[0054] A single battery cell includes end caps, a housing, electrode assemblies, and other functional components.

[0055] An end cap is a component that covers the opening of a housing to isolate the internal environment of a battery cell from the external environment. The shape of the end cap can be adapted to the shape of the housing to fit it. Optionally, the end cap can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cap is less prone to deformation under pressure and impact, allowing the battery cell to have higher structural strength and improved safety performance. Functional components such as electrode terminals can be provided on the end cap. Electrode terminals can be used for electrical connection with electrode assemblies to output or input electrical energy into the battery cell. In some embodiments, electrode terminals can include terminals. Terminals can include positive and negative terminals for current output and connection to external circuits. In some embodiments, the end cap can also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of the battery cell reaches a threshold. The material of the end cap can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this application embodiment does not impose any special limitations on this. In some embodiments, an insulating element may be provided on the inner side of the end cap. The insulating element can be used to isolate the electrical connection components within the housing from the end cap to reduce the risk of short circuits. For example, the insulating element may be made of plastic, rubber, etc.

[0056] The housing is a component used to fit with the end cap to form the internal environment of a battery cell. This internal environment can accommodate electrode components, electrolyte, and other parts. The housing and end cap can be independent components. An opening can be provided on the housing, and the end cap closes the opening to form the internal environment of the battery cell. Alternatively, the end cap and housing can be integrated. Specifically, the end cap and housing can form a common connecting surface before other components are inserted into the housing. When it is necessary to encapsulate the interior of the housing, the end cap closes the housing. The housing can have various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing can be determined according to the specific shape and size of the electrode components. The housing can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. This application does not impose any special limitations on these materials.

[0057] Electrode assemblies are the components within a single battery cell where electrochemical reactions occur. The casing may contain one or more electrode assemblies. Electrode assemblies are primarily formed by winding or stacking electrode sheets (including positive and negative electrodes), and typically a separator is placed between the positive and negative electrodes. The portions of the positive and negative electrodes containing active material constitute the main body of the electrode assembly, while the portions without active material each constitute a tab. The positive and negative tabs can be located together at one end of the main body or separately at both ends. During the charging and discharging process, the positive and negative active materials react with the electrolyte, and the tabs connect to the electrode terminals to form a current loop.

[0058] To improve the cutting quality of the workpiece 20, this application also provides a cutting apparatus 10. Please refer to... Figure 2 , Figure 3 and Figure 4 As shown, Figure 2 This is a schematic diagram of the structure of a cutting device provided in some embodiments of this application. Figure 3 yes Figure 2 A schematic diagram of the auxiliary components and the cutting area in the cutting device shown from another perspective; Figure 4 yes Figure 2 The diagram shows a first structural schematic of the auxiliary component in the cutting apparatus. In some embodiments, the cutting apparatus 10 includes a slitting component 11 and an auxiliary component 12. The slitting component 11 is configured to cut the workpiece 20 located in the cutting area 107; the auxiliary component 12 includes an air jet section 121 and an adsorption section 122. Figure 4 As shown, the jet section 121 has a jet passage 101 and an air inlet 102 and a jet outlet 103 communicating with the jet passage 101. The jet passage 101 is configured to blow protective gas toward the cutting area 107 through the jet outlet 103; the adsorption section 122 is configured to adsorb the workpiece 20 to be cut when the slitting piece 11 cuts it.

[0059] The cutting area 107 is the area corresponding to the slitting part 11 where the workpiece 20 to be cut is performed. When the workpiece 20 to be cut needs to be cut, it is first moved to the cutting area 107. When the cutting device 10 cuts the workpiece 20 in the cutting area 107, the jet unit 121 sprays protective gas into the cutting area 107. The protective gas enters the jet channel 101 through the air inlet 102 of the jet unit 121, and the protective gas in the jet channel 101 is then sprayed out to the cutting area 107 through the jet outlet 103. The protective gas can cover part of the cutting area 107 or cover the entire cutting area 107. In this way, when the slitting part 11 cuts the workpiece 20 in the cutting area 107, the cutting surface can reduce its contact with air under the action of the protective gas, thereby reducing the oxidation reaction between the cutting surface and oxygen. By adjusting the pressure and flow rate of the protective gas, the gas flow field in the cutting area 107 can be stabilized, reducing the contamination of the cutting surface by slag or dust and improving the quality of the finished product after cutting.

[0060] When the cutting device 10 is cutting, the adsorption part 122 can adsorb the workpiece 20 to be cut, thereby stabilizing the workpiece 20, reducing the vibration and displacement of the workpiece 20 during the cutting process, and improving the cutting accuracy of the slitting part 11.

[0061] The cutting device 10 stabilizes the workpiece 20 to be cut through the adsorption section 122 to suppress vibration displacement and covers the cutting area 107 with a protective gas to reduce oxidation reaction, aiming to solve common problems in the cutting process of the workpiece 20 (such as heat-affected zone, oxide zone, molten burrs, and dimensional accuracy control). Therefore, the design of this cutting device 10 is highly versatile. This cutting device 10 can be used to cut battery electrodes. In other embodiments, this cutting device 10 can also be applied to materials such as battery separators. For example, as a polymer film, the separator is soft, easily deformable, and heat-sensitive; the stable adsorption environment and oxidation protection provided by the cutting device 10 in the above embodiment can improve the cutting quality.

[0062] Protective gases can include, but are not limited to, nitrogen, argon, and helium. For example, nitrogen is suitable for stainless steel and aluminum; argon is suitable for special materials such as titanium alloys and high-temperature alloys; and helium is suitable for highly reflective materials such as copper and gold.

[0063] In some embodiments, such as Figure 4 As shown, the adsorption section 122 has an air intake channel 104 and an air intake port 105 and an air outlet 106 communicating with the air intake channel 104. The air intake port 105 is configured to face the workpiece 20 to be cut.

[0064] In the above embodiment, the air intake 105 can be positioned towards the workpiece 20 to be cut. The adsorption part 122 draws in air through the air intake 105 and then discharges it through the air intake channel 104 and the air outlet 106, thereby generating a negative pressure on one side of the air intake 105 to adsorb the workpiece 20 to be cut. The adsorption part 122 can stabilize the operation of the workpiece 20 to be cut. When the slitting part 11 cuts the workpiece 20 to be cut, the adsorption part 122 stabilizes the workpiece 20 to be cut, thus improving the cutting accuracy of the slitting part 11 on the workpiece 20 to be cut.

[0065] In some embodiments, the jet nozzle 103 and the air intake 105 are oriented differently.

[0066] The jet nozzle 103 is used for jetting air, and the intake nozzle 105 is used for inhaling air. Since their airflow directions are different, the airflow drawn in by the intake nozzle 105 is prone to interfering with the protective airflow generated by the jet nozzle 103. By oriented the jet nozzle 103 and the intake nozzle 105 differently, the direction of air intake differs from the direction of jetting air. This reduces airflow interference between the jet nozzle 103 and the intake nozzle 105, and also reduces mutual interference between the adsorption section 122 and the jet section 121 during operation.

[0067] In some embodiments, such as Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, Figure 5 This is a schematic diagram of the structure of a cutting device provided in some other embodiments of this application. Figure 6 yes Figure 5 Enlarged structural diagram at point A in the middle circle; Figure 7 yes Figure 5 The diagram shows the structure of the auxiliary components in the cutting device.

[0068] Figure 8 yes Figure 7 The diagram shows a side view of the auxiliary component. The adsorption section 122 and the jet section 121 can be integrally molded to form a single structure.

[0069] The adsorption section 122 and the jet section 121 form an integrated structure, that is, the auxiliary component 12 is a single unit. This reduces the number of assembly parts during assembly, lowering assembly and maintenance costs. Furthermore, it eliminates the need for separate assembly of the adsorption section 122 and the jet section 121, reducing assembly errors. Additionally, the integrated structure enhances the overall strength and rigidity of the auxiliary component 12, improving its vibration resistance.

[0070] In some embodiments, the jet port 103 and the air intake port 105 may be located on different sides of the integral structure.

[0071] For example, such as Figure 7 and Figure 8 As shown, the air jet 103 is located at the bottom of the integral structure, and the air intake 105 is located on the side of the integral structure. The air intake 105 can abut against the workpiece 20 to be cut, and the air jet 103 can be located on the upper side of the cutting area 107. In other embodiments, the air intake 105 and the air jet 103 can also be located on opposite sides of the integral structure.

[0072] The above configuration can reduce airflow interference between the jet nozzle 103 and the suction port 105. When the suction port 105 adsorbs the workpiece 20 to be cut, the workpiece 20 to be cut contacts the side of the auxiliary component 12 with the suction port 105, which will not affect the jet operation of the jet nozzle 103. Both the jet part 121 and the adsorption part 122 can work normally.

[0073] It is understood that in other embodiments, the adsorption section 122 and the jet section 121 may not be integrally formed. For example, in some embodiments, the adsorption section 122 and the jet section 121 are independent components, arranged adjacent to each other. In this way, the adsorption section 122 and the jet section 121 can be replaced individually as needed without replacing the entire auxiliary component 12, thus reducing the maintenance cost of the auxiliary component 12.

[0074] In some embodiments, such as Figure 7 As shown, the air intake 105 includes at least a plurality of sub-air inlets 108 arranged in an array. The distance between two adjacent sub-air inlets 108 along the first direction X is less than the length of the workpiece 20 to be cut along the first direction X, wherein the first direction X is perpendicular to the arrangement direction of the adsorption part 122 and the workpiece 20 to be cut.

[0075] The intake port 105 includes multiple sub-intake holes 108 arranged in an array, thus forming a "negative pressure matrix". When adsorbing easily deformable materials, the adsorption section 122 can reduce adsorption deformation and reduce the risk of "central collapse".

[0076] The first direction X can be the width direction of the workpiece 20 to be cut. The spacing between adjacent sub-air inlets 108 on the adsorption section 122 is designed to be relatively large in this width direction, while the width of the workpiece 20 to be cut is relatively small. With this design, when the workpiece 20 to be cut passes through the adsorption section 122, it will not fall completely into the gap area between two adjacent sub-air inlets 108 (i.e., it will not be "missed"). Even if the position of the workpiece 20 to be cut may fluctuate during the production process, at least a portion of the sub-air inlets 108 will always be able to cover it and generate adsorption force. This design can reduce the risk of the workpiece 20 to be cut being missed, improve the reliability of adsorption, and thus improve the yield of the finished products cut by the cutting device 10.

[0077] In some embodiments, the air inlet 105 and the air outlet 106 may be located on different sides of the adsorption portion 122.

[0078] The air inlet 105 and the air outlet 106 are not on the same side, so the air outlet 106 does not occupy the space of the air inlet 105. This increases the area of ​​the air inlet 105, thereby increasing the area of ​​the adsorption side. Furthermore, having the air inlet 105 and the air outlet 106 on different sides reduces the bends in the air intake channel 104, thus reducing the complexity of the air intake channel 104. For example, as... Figure 7 and Figure 8 As shown, the air intake 105 is disposed on the side of the adsorption section 122, and the air outlet 106 is disposed at the upper end of the adsorption section 122. It can be understood that in other embodiments, the air intake 105 and the air outlet 106 may also be disposed on opposite sides to form a through airflow in the adsorption section 122.

[0079] In some embodiments, such as Figure 9 As shown, Figure 9 yes Figure 8 The diagram shows a first structural schematic of the jet nozzle in the auxiliary component. The jet nozzle 103 can extend along a second direction Y, wherein the second direction Y is perpendicular to the arrangement direction of the jet section 121 and the part to be cut 20.

[0080] In the above embodiment, the number of jet nozzles 103 is one, and the jet nozzle 103 can be a slit (elongated). In other embodiments, the jet nozzle 103 may also include at least two spaced slits. This arrangement simplifies the structure of the jet section 121 and reduces the manufacturing difficulty of the jet section 121. Moreover, setting the jet nozzle 103 as an elongated shape can reduce the risk of the jet nozzle 103 being blocked by dust. By controlling the size of the slits, the diffusion area and diffusion speed of the protective gas can be effectively controlled. For example, when the part to be cut 20 is a battery electrode, the length of the jet nozzle 103 can be matched with the width of the electrode tab, the length of the slit can range from 20mm to 35mm, and the width of the slit can range from 0.1mm to 0.5mm.

[0081] In other embodiments, such as Figure 10 As shown, Figure 10 yes Figure 8 The diagram shows a second structural schematic of the jet nozzle in the auxiliary component. Optionally, the jet nozzle 103 may include a plurality of sub-jet holes 109, which are arranged sequentially at intervals along a second direction X, wherein the second direction Y is perpendicular to the arrangement direction of the jet section 121 and the workpiece 20 to be cut.

[0082] The diameter of each sub-jet nozzle 109 can range from 0.1 mm to 1 mm. The spacing between two adjacent sub-jet nozzles 109 can range from 0.1 mm to 2 mm. Figure 10In the illustrated embodiment, by arranging the jet nozzle 103 into a series of sub-jet holes 109 in a straight line, airflow waste can be reduced through discrete and precise flow control. The sub-jet holes 109 can be arranged at equal intervals to improve the uniformity of airflow.

[0083] In some embodiments, the length of the jet nozzle 103 along the second direction Y may not be less than the length of the cutting region 107 along the second direction Y.

[0084] The length of the jet nozzle 103 along the second direction Y can be greater than the length of the cutting area 107 along the second direction Y. Alternatively, the length of the jet nozzle 103 along the second direction Y can also be equal to the length of the cutting area 107 along the second direction Y. This arrangement allows the protective gas ejected by the jet nozzle 121 to cover the cutting area 107 as completely as possible. Thus, when the workpiece 20 is cut in the cutting area 107, the cut surface can be almost entirely within the coverage of the protective gas. Therefore, the contact between the cut surface of the workpiece 20 and oxygen in the air can be reduced, thereby effectively improving problems such as oxidation, burrs, and molten beads caused by high temperatures during the cutting process, and improving the cutting quality.

[0085] In some embodiments, the jet nozzle 103 and the air inlet 102 are located at opposite ends of the jet section 121.

[0086] like Figure 8 As shown, the jet nozzle 103 can be located at the lower end of the jet section 121, and the air inlet 102 can be located at the upper end of the jet section 121. Firstly, positioning the jet nozzle 103 and the air inlet 102 on opposite sides of the jet section 121 increases the area of ​​the jet nozzle 103, thereby increasing the coverage of the protective gas. Secondly, the greater distance between the jet nozzle 103 and the air inlet 102 reduces interference between them, increasing the uniformity of the jet flow from the jet nozzle 103. Furthermore, positioning the jet nozzle 103 and the air inlet 102 on opposite sides of the jet section 121 reduces bends in the jet passage 101, creating a through-flow channel, improving the stability of the jet section 121's output, reducing airflow fluctuations, and ensuring smooth airflow output.

[0087] It is understood that in other embodiments, the jet nozzle 103 may be located at the lower end of the jet section 121, and the air inlet 102 may be located on the side of the jet section 121. In this way, the jet nozzle 103 and the air inlet 102 will not interfere with each other, and the area of ​​the jet nozzle 103 can be designed to be larger.

[0088] In some embodiments, such as Figure 8As shown, the jet channel 101 includes a first connecting channel 1011, a first buffer chamber 1012, and a second connecting channel 1013. One end of the first connecting channel 1011 is connected to the air inlet 102, and the other end of the first connecting channel 1011 is connected to the first buffer chamber 1012. One end of the second connecting channel 1013 is connected to the first buffer chamber 1012, and the other end of the second connecting channel 1013 is connected to the jet outlet 103.

[0089] The jet channel 101 is provided with a first buffer chamber 1012 and connecting channels located on both sides of the first buffer chamber 1012. When the protective gas passes through the jet channel 101, it first enters the first buffer chamber 1012 through the first connecting channel 1011, then enters the second connecting channel 1013 through the first buffer chamber 1012, and is then ejected through the jet nozzle 103. The protective gas can be transferred in the first buffer chamber 1012, which can reduce the fluctuation of the airflow of the input protective gas and enable the protective gas to be ejected more evenly. Moreover, the jet channel 101 has a simple structure, which can simplify the manufacturing process of the jet section 121 and save the manufacturing cost of the cutting device 10.

[0090] In some embodiments, the jet passage 101 may include at least two buffer chambers.

[0091] For example, the jet channel 101 can be equipped with two, three, or more buffer chambers, depending on the dimensions of the jet section 121. As airflow transfer stations, multiple buffer chambers allow for gradual adjustment of the protective gas flow, progressively reducing turbulence or pressure fluctuations in the protective gas input through the inlet 102. By gradually adjusting the airflow through multiple buffer chambers to achieve gradual flow stabilization, the airflow ejected from the jet nozzle 103 becomes smoother and more uniform. Furthermore, the gradual expansion and deceleration of the protective gas flow through multiple buffer chambers significantly reduces high-frequency whistling noise. The segmented channel design also reduces sharp turns in the airflow and minimizes eddy noise.

[0092] like Figure 11 As shown, Figure 11 yes Figure 5The diagram shows a second structural schematic of the auxiliary component in the cutting device. In some embodiments, the jet channel 101 may include a second buffer chamber 1014, a third buffer chamber 1015, a fourth buffer chamber 1016, a third connecting channel 1017, a fourth connecting channel 1018, a fifth connecting channel 1019, and a sixth connecting channel 1020. One end of the third connecting channel 1017 is connected to the air inlet 102, and the other end of the third connecting channel 1017 is connected to the second buffer chamber 1014. One end of the fourth connecting channel 1018 is connected to the second buffer chamber 1014, and the other end of the fourth connecting channel 1018 is connected to the third buffer chamber 1015. One end of the fifth connecting channel 1019 is connected to the third buffer chamber 1015, and the other end of the fifth connecting channel 1019 is connected to the fourth buffer chamber 1016. One end of the sixth connecting channel 1020 is connected to the fourth buffer chamber 1016, and the other end of the sixth connecting channel 1020 is connected to the jet outlet 103.

[0093] In the above embodiment, the jet channel 101 includes three buffer chambers, which are connected sequentially through connecting channels. Protective gas enters the jet channel 101 from the inlet 102, passes through the third connecting channel 1017 into the second buffer chamber 1014, then through the fourth connecting channel 1018 into the third buffer chamber 1015, then through the fifth connecting channel 1019 into the fourth buffer chamber 1016, and finally exits from the jet nozzle 103 through the sixth connecting channel 1020. The protective gas can sequentially pass through the second buffer chamber 1014, the third buffer chamber 1015, and the fourth buffer chamber 1016 to adjust the airflow state, gradually reducing the pressure fluctuation of the protective gas flow. After passing through three buffer stages, the pressure fluctuation of the airflow is smaller, and the airflow ejected from the jet nozzle 103 is more uniform.

[0094] In some embodiments, the adsorption unit 122 can also adsorb the workpiece 20 to be cut by magnetic force. Specifically, the adsorption unit 122 may include a magnet (not shown) configured to generate a magnetic field to adsorb the workpiece 20 to be cut.

[0095] The aforementioned magnet can be an electromagnet or a permanent magnet, etc. The magnet generates a magnetic field to magnetically attract the workpiece 20 to be cut. When the slitting piece 11 is cutting the workpiece 20, the magnet magnetically attracts it, thereby stabilizing the material to be cut, reducing vibration and displacement of the workpiece 20 during the cutting process, improving the cutting accuracy of the slitting piece 11, and improving the quality of the finished product after cutting the workpiece 20. This configuration results in a simple structure for the adsorption unit 122 and lower cost.

[0096] In some embodiments, the slitting element 11 may include a laser cutting head configured to emit a laser beam toward the cutting area 107.

[0097] Laser cutting involves focusing a laser beam emitted from a laser source into a high-power-density beam via an optical path system. This beam irradiates the surface of the workpiece, causing it to reach its melting or boiling point. As the relative position of the beam and the workpiece moves, a kerf is formed, achieving the cutting purpose. Laser cutting uses an invisible laser beam to replace traditional mechanical blades. It features high speed, high precision, and high adaptability, along with advantages such as small kerf width, small heat-affected zone, high-quality cut surface, noiseless cutting, easy automation, no limitations on cutting patterns, and low processing costs. Laser cutting can be applied in battery manufacturing, automotive, locomotive manufacturing, aerospace, chemical, and electrical and electronic fields. The small diameter of the focused laser beam is suitable for high-precision pattern cutting. Furthermore, laser cutting is a non-contact process, reducing material deformation and edge burrs on the workpiece.

[0098] It is understood that in other embodiments, the slitting element 11 may also include a plasma cutting head. Plasma cutting is a process that uses a high-temperature plasma arc to melt the workpiece 20 to be cut, forming a cut. High voltage is applied between the electrode and the workpiece 20 to be cut, ionizing the gas to form a plasma arc. The high temperature of the plasma arc instantly melts the workpiece 20 to be cut.

[0099] For example, please refer to some embodiments of this application. Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the cutting device 10 includes a laser cutting head and an auxiliary component 12. The laser cutting head is used to cut the electrode sheet of the battery. The auxiliary component 12 is located above the cutting area 107 corresponding to the laser cutting head. The auxiliary component 12 is used to adsorb the electrode sheet when the laser cutting head cuts the electrode sheet to stabilize the electrode sheet, and to blow protective gas into the cutting area 107.

[0100] Please see Figure 7 and Figure 8 As shown, the auxiliary component 12 is an integral structure. This integral structure forms a jet channel 101 and a jet port 103 and an air inlet 102 communicating with the jet channel 101. The jet port 103 and the air inlet 102 are located on opposite sides of the auxiliary component 12. This integral structure also forms an intake channel 104 and an intake port 105 and an exhaust port 106 communicating with the intake channel 104. The intake port 105 is located on the side of the integral structure and faces the electrode.

[0101] The jet nozzle 103 can be a slit nozzle, the length of which can be matched with the tab. For example, the length of the slit nozzle can be in the range of 20mm to 35mm, and the width of the slit can be in the range of 0.1mm to 0.5mm.

[0102] When the laser cutting head cuts the electrode in the cutting area 107, the auxiliary component 12 inputs protective gas into the jet channel 101 through the air inlet 102, and the protective gas is sprayed onto the cutting area 107 through the jet nozzle 103 so that the protective gas can cover the cutting area 107.

[0103] The protective gas reduces oxidation reactions between the cut surface and oxygen in the air. Furthermore, by adjusting the gas pressure and flow rate, the gas flow field within the cutting zone 107 can be stabilized, reducing contamination of the cut surface by molten slag or dust. The structural design of the auxiliary component 12 reduces problems such as oxidation, burrs, and molten beads during laser cutting.

[0104] When the laser cutting head cuts the electrode, the suction port 105 of the auxiliary component 12 draws in air, which is then discharged through the suction channel 104 and the outlet 106, creating a negative pressure on the side of the auxiliary component 12 with the suction port 105. Under this negative pressure, the electrode is attracted and comes into contact with the side of the auxiliary component 12 with the suction port, thus stabilizing the electrode. In the above embodiment, the auxiliary component 12 also has an adsorption function, using negative pressure to keep the electrode stable when it enters the cutting area 107. The adsorption and blowing functions of the auxiliary component 12 work together to reduce vibration or displacement of the electrode during the cutting process, improving the cutting quality of the electrode.

[0105] In summary, in the above embodiments, the cutting device 10 is provided with an auxiliary component 12. The jetting part 121 in the auxiliary component 12 can spray protective gas towards the cutting area 107, reducing the contact between the cutting surface and oxygen in the air, reducing the oxidation reaction of the cutting surface, and the protective gas can reduce the contamination of the cutting surface by slag or dust, thereby improving the cutting quality. At the same time, the adsorption part 122 can adsorb the workpiece 20 to be cut during the cutting process, thereby stabilizing the workpiece 20 to be cut, reducing the vibration and displacement of the workpiece 20 to be cut during the cutting process, and improving the cutting accuracy of the workpiece 20 to be cut.

[0106] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has 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 therein. 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, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A cutting device, characterized in that, The cutting device includes: A slitting component, configured to cut a workpiece located in a cutting area; An auxiliary component includes a jetting section and an adsorption section. The jetting section has a jetting channel and an air inlet and a jetting port communicating with the jetting channel. The jetting channel is configured to blow protective gas toward the cutting area through the jetting port. The adsorption section is configured to adsorb the workpiece to be cut when the slitting component cuts the workpiece to be cut.

2. The cutting device according to claim 1, characterized in that, The adsorption section has an air intake channel and an air intake port and an air outlet communicating with the air intake channel. The air intake port is configured to face the workpiece to be cut.

3. The cutting device according to claim 2, characterized in that, The air inlet and the air outlet are oriented differently.

4. The cutting device according to claim 2 or 3, characterized in that, The adsorption section and the jet section are integrally molded to form a single structure.

5. The cutting device according to claim 4, characterized in that, The air inlet and the air outlet are located on different sides of the integral structure.

6. The cutting device according to claim 2, characterized in that, The air intake includes a plurality of sub-intake holes arranged in an array; The distance between two adjacent sub-inlet holes along the first direction is less than the length of the workpiece to be cut along the first direction, wherein the first direction is perpendicular to the arrangement direction of the adsorption part and the workpiece to be cut.

7. The cutting device according to claim 2, characterized in that, The air inlet and the air outlet are located on different sides of the adsorption section.

8. The cutting device according to claim 1, characterized in that, The adsorption unit includes a magnet configured to generate a magnetic field to adsorb the workpiece to be cut.

9. The cutting device according to claim 1, characterized in that, The jet nozzle includes a plurality of sub-jet holes, which are arranged sequentially at intervals along a second direction, wherein the second direction is perpendicular to the arrangement direction of the jet section and the workpiece to be cut.

10. The cutting device according to claim 1, characterized in that, The jet nozzle extends along a second direction, wherein the second direction is perpendicular to the arrangement direction of the jet section and the workpiece to be cut.

11. The cutting device according to claim 1, characterized in that, The jet nozzle and the air inlet are located at opposite ends of the jet section.

12. The cutting device according to claim 1, characterized in that, The jet channel includes a first connecting channel, a first buffer chamber, and a second connecting channel. One end of the first connecting channel is connected to the air inlet, and the other end of the first connecting channel is connected to the first buffer chamber. One end of the second connecting channel is connected to the first buffer chamber, and the other end of the second connecting channel is connected to the jet outlet.

13. The cutting device according to claim 1, characterized in that, The jet passage includes at least two buffer chambers.

14. The cutting device according to claim 13, characterized in that, The jet passage includes a second buffer chamber, a third buffer chamber, a fourth buffer chamber, a third connecting channel, a fourth connecting channel, a fifth connecting channel, and a sixth connecting channel. Wherein, one end of the third connecting channel is connected to the air inlet, and the other end of the third connecting channel is connected to the second buffer chamber; one end of the fourth connecting channel is connected to the second buffer chamber, and the other end of the fourth connecting channel is connected to the third buffer chamber; one end of the fifth connecting channel is connected to the third buffer chamber, and the other end of the fifth connecting channel is connected to the fourth buffer chamber; one end of the sixth connecting channel is connected to the fourth buffer chamber, and the other end of the sixth connecting channel is connected to the jet outlet.

15. The cutting device according to claim 1, characterized in that, The slitting component includes a laser cutting head configured to emit a laser beam toward the cutting area.

16. A battery manufacturing apparatus, characterized in that, The battery production equipment includes: A conveyor configured to support and convey the piece to be cut; The cutting device according to any one of claims 1 to 15, wherein the cutting device is disposed on one side of the conveyor, and the cutting device is configured to cut the workpiece to be cut in the cutting area.

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