Electrode cutting equipment and rectifiers, rectifier blocks

Abstract

This application discloses an electrode cutting device and a rectifier and rectifier block, relating to the field of battery manufacturing technology. The electrode cutting device includes a support device, a laser generator, and a rectifier. The light-emitting part of the laser generator is positioned opposite to the support device. The rectifier includes a rectifier block and a gas output device. The rectifier block has a cavity and a gas delivery channel. The cavity extends through the rectifier block, and the two ends of the gas delivery channel are connected to the cavity and the gas output device, respectively. The rectifier block is located between the light-emitting part and the support device. The end of the rectifier block facing away from the light-emitting part is used to abut against the electrode. The two openings of the cavity face the light-emitting part and the support device, respectively. The gas delivery channel can deliver protective gas from the gas output device into the cavity, thereby facilitating the accumulation of protective gas within the cavity at the laser cutting position. This helps reduce defects such as oxide bands and molten beads, improving the electrode cutting yield, and also helps reduce protective gas consumption by accumulating the protective gas.

Description

Technical Field

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

[0002] In the production process of batteries such as lithium batteries and sodium batteries, after the electrode sheets have completed processes such as coating and rolling, they need to undergo cutting processes such as pre-slitting and tab die-cutting.

[0003] Electrode cutting methods mainly include blade cutting and laser cutting. Blade cutting results in larger burrs on the electrode edges, easily damaging the coating area and making it difficult to guarantee electrode quality, leading to a lower pass rate. Currently, laser cutting technology is more widely used because it is easier to programmatically control the cutting to specific sizes and shapes, resulting in a relatively higher pass rate for electrode cutting.

[0004] However, during the laser cutting process of electrodes, defects such as molten burrs (molten beads) sometimes appear on the cut surface of the electrodes, which leads to a decrease in the pass rate of electrode cutting. Utility Model Content

[0005] The main purpose of this application is to provide an electrode cutting device and a rectifier and rectifier block, which can help improve the pass rate of electrode cutting.

[0006] To achieve the above objectives, the electrode cutting equipment proposed in this application includes a carrier device, a laser generator, and a rectifier. The carrier device is used to carry the electrode. The light-emitting part of the laser generator is arranged opposite to the carrier device, and the light-emitting part is used to output a die-cutting laser for cutting the electrode. The rectifier includes a rectifier block and a gas output device. The rectifier block has a cavity and a gas delivery channel. The cavity passes through the rectifier block, and the two ends of the gas delivery channel are respectively connected to the cavity and the gas output device. The rectifier block is located between the light-emitting part and the carrier device. The end of the rectifier block facing away from the light-emitting part is used to abut the electrode, and the two openings of the cavity face the light-emitting part and the carrier device, respectively.

[0007] When the electrode cutting equipment provided in this application is in use, the die-cutting laser output from the laser generator's output section can pass through the cavity of the rectifier block to cut the electrode. The gas delivery channel of the rectifier block can deliver protective gas from the gas output device into the cavity, which helps to concentrate the protective gas in the cavity at the laser cutting position. This helps to prevent the cutting surface from reacting with oxygen in the air, reduces defects such as oxide bands and molten beads, improves the pass rate of electrode cutting, and reduces the consumption of protective gas by concentrating the protective gas.

[0008] In some implementations, the gas delivery channel includes a delivery section and an output channel connected together. The delivery section is connected to a gas output device. The opening of the output channel is connected to a cavity, and the opening of the output channel is arranged around the cavity in a circumferential direction.

[0009] At this time, the outlet of the output slot is arranged around the circumference of the cavity, which helps the protective gas to flow to the cutting area from multiple directions, which helps to form a more stable flow field in the cutting area and reduces the risk of foreign matter such as molten slag and dust contaminating the cutting surface.

[0010] In some implementations, along the direction through which the cavity penetrates the rectifier block, the rectifier block has a first end face and a second end face that are arranged opposite to each other; the cavity penetrates to the first end face and the second end face respectively, the first end face faces the light-emitting part, and the second end face is used to abut against the electrode; the slot opening of the output slot has a first distance to the first end face, and the slot opening of the output slot has a second distance to the second end face, the second distance being less than the first distance.

[0011] At this time, the opening of the output slot is closer to the electrode during the cutting process, which is more conducive to the accumulation of protective gas in the cutting area.

[0012] In some implementations, the distance between the edge of the output slot facing the second end face and the second end face is less than or equal to 2 mm.

[0013] At this time, the opening of the output slot is closer to the electrode during the cutting process, which is more conducive to the accumulation of protective gas in the cutting area.

[0014] In some implementations, the width of the output slot opening is set along the direction in which the cavity penetrates the rectifier block, and the width of the output slot opening is less than or equal to 0.5 mm.

[0015] At this time, the width of the outlet slot is smaller, which helps the protective gas to flow more concentratedly to the cutting area, thus making it easier for the protective gas to accumulate in the cutting area.

[0016] In some implementations, the portion of the output slot that connects to the cavity is tilted along the direction toward the support device.

[0017] At this time, the part connecting the output slot and the cavity is inclined in the direction towards the bearing device, which is conducive to the flow of protective gas to the cutting area, and thus more conducive to the accumulation of protective gas in the cutting area.

[0018] In some implementations, the electrode cutting equipment also includes a first suction device, and the rectifier block also has a first suction channel connected to the first suction device, the first suction channel having a first suction port connected to the cavity; along the direction from the light-emitting part to the carrier device, one end of the gas conveying channel connected to the cavity is disposed between the first suction port and the carrier device.

[0019] At this time, the first suction channel can adsorb foreign objects such as dust raised during the laser cutting process through the first suction port, thereby reducing the risk of foreign objects escaping to the outside and causing pollution.

[0020] In some implementations, the first suction channel includes a first connecting section and a first suction groove connected to each other. The first connecting section is connected to the first suction device. The opening of the first suction groove forms a first suction port. The opening of the first suction groove is connected to the cavity. The opening of the first suction groove is arranged around the cavity in the circumferential direction.

[0021] At this time, the opening of the first suction groove is arranged around the circumference of the cavity, so that dust and other foreign objects can be adsorbed in more positions, reducing the risk of foreign objects escaping to the outside.

[0022] In some implementations, the electrode cutting equipment also includes a second suction device, and the rectifier block also has a second suction channel communicating with the second suction device. The second suction channel has a second suction port, which is located on the end face of the rectifier block facing the carrier device.

[0023] At this point, for foreign objects such as dust that may escape along the surface of the electrode, the second suction channel can adsorb them through the second suction port, thereby reducing the risk of foreign objects escaping to the outside and causing contamination. In addition, the second suction port can provide adsorption force to the electrode, reducing the vibration and displacement of the electrode during the cutting process and improving the cutting accuracy of the electrode.

[0024] In some implementations, the second suction channel includes a second connecting section and a second suction groove connected to each other. The second connecting section is connected to the second suction device. The opening of the second suction groove forms a second suction port. The opening of the second suction groove is located on the end face of the rectifier block facing the bearing device. The opening of the second suction groove is arranged around the cavity in the circumferential direction.

[0025] At this time, the opening of the second suction groove is arranged around the circumference of the cavity, which can not only adsorb foreign objects such as dust in more positions to reduce the risk of pollution, but also adsorb the electrode sheet in more positions to improve the cutting accuracy of the electrode sheet.

[0026] In some implementations, the edge of the rectifier block facing the support device has an inclined surface, which is inclined in a direction away from the support device and extends to the opening of the second suction groove.

[0027] At this point, the inclined surface extends to the opening of the second suction groove, which helps to form a stable airflow towards the second suction port at the edge of the rectifier block. This not only improves the success rate of adsorbing foreign objects near the edge of the rectifier block, but also enables more stable adsorption of the electrode sheet.

[0028] This application also provides a rectifier for use in electrode cutting equipment. The electrode cutting equipment includes a support device and a laser generator. The support device is used to support the electrode. The light-emitting part of the laser generator is disposed opposite to the support device. The light-emitting part is used to output a die-cutting laser for cutting the electrode. The rectifier includes a rectifier block and a gas output device. The rectifier block has a cavity and a gas delivery channel. The cavity passes through the rectifier block, and the two ends of the gas delivery channel are respectively connected to the cavity and the gas output device. The rectifier block is located between the light-emitting part and the support device. The end of the rectifier block facing away from the light-emitting part is used to abut against the electrode. The two openings of the cavity face the light-emitting part and the support device, respectively.

[0029] When the rectifier provided in this application is used, the rectifier enables the die-cutting laser output from the laser generator's output section to pass through the cavity of the rectifier block to cut the electrode. The gas delivery channel of the rectifier block can deliver protective gas from the gas output device into the cavity, which helps to concentrate the protective gas in the cavity at the laser cutting position. This helps to prevent the cutting surface from reacting with oxygen in the air, reduces defects such as oxide bands and molten beads, improves the pass rate of electrode cutting, and reduces the consumption of protective gas by concentrating the protective gas.

[0030] This application also provides a rectifier block for use as a rectifier in an electrode cutting device. The electrode cutting device includes a support device and a laser generator. The support device is used to support the electrode. The light-emitting part of the laser generator is disposed opposite to the support device. The light-emitting part is used to output a die-cutting laser for cutting the electrode. The rectifier includes a gas output device. The rectifier block has a cavity and a gas delivery channel. The cavity extends through the rectifier block. The two ends of the gas delivery channel are respectively connected to the cavity and the gas output device. The rectifier block is located between the light-emitting part and the support device. The end of the rectifier block facing away from the light-emitting part is used to abut against the electrode. The two openings of the cavity face the light-emitting part and the support device, respectively.

[0031] When the rectifier block provided in this application is used, the rectifier block enables the die-cutting laser output from the laser generator's output section to pass through the cavity of the rectifier block to cut the electrode sheet. The gas delivery channel of the rectifier block can deliver protective gas from the gas output device into the cavity, which helps to concentrate the protective gas in the cavity at the laser cutting position. This helps to prevent the cutting surface from reacting with oxygen in the air, which helps to reduce defects such as oxide bands and molten beads, thereby improving the pass rate of electrode sheet cutting. It also helps to reduce the consumption of protective gas by concentrating the protective gas. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.

[0033] Figure 1 A schematic diagram of the electrical equipment corresponding to an embodiment of the electrode cutting equipment provided in this application;

[0034] Figure 2 A schematic diagram of a battery device corresponding to an embodiment of the electrode cutting equipment provided in this application;

[0035] Figure 3 A schematic diagram of a battery cell corresponding to an embodiment of the electrode cutting equipment provided in this application;

[0036] Figure 4 A schematic diagram of an embodiment of the electrode cutting equipment provided in this application;

[0037] Figure 5 A schematic diagram of a partial structure of an embodiment of the electrode cutting equipment provided in this application;

[0038] Figure 6 This is a perspective view of the rectifier block in one embodiment of this application;

[0039] Figure 7 This is a top view of the rectifier block in one embodiment of this application;

[0040] Figure 8 for Figure 7 A cross-sectional view at position AA in the middle;

[0041] Figure 9 for Figure 8 A magnified view of a section at point B.

[0042] Explanation of icon numbers:

[0043] 10. Electrical equipment; 11. Controller; 12. Motor;

[0044] 20. Battery assembly; 21. Battery housing; 22. Individual battery cell assembly;

[0045] 221. Battery cell; 222. Casing; 223. Terminal post; 230. Electrode sheet; 231. Tab;

[0046] 300. Electrode cutting equipment; 310. Supporting device;

[0047] 320. Laser generator; 321. Beam output section; 322. Die-cutting laser;

[0048] 330, rectifier; 400, rectifier block; 401, first end face; 402, second end face;

[0049] 410. Cavity; 420. Gas delivery channel; 421. Delivery section; 422. Output trough;

[0050] 430. First suction channel; 431. First suction port; 432. First connecting section;

[0051] 433. First suction groove;

[0052] 440. Second suction channel; 441. Second suction port;

[0053] 442. Second connecting section; 443. Second suction groove; 444. Inclined surface.

[0054] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0055] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0056] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0057] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0058] In the production process of batteries such as lithium batteries and sodium batteries, after the electrode sheets have completed processes such as coating and rolling, they need to undergo cutting processes such as pre-slitting and tab die-cutting.

[0059] Electrode cutting methods mainly include blade cutting and laser cutting. Blade cutting results in larger burrs on the electrode edges, easily damaging the coating area and making it difficult to guarantee electrode quality, leading to a lower pass rate. Currently, laser cutting technology is more widely used because it is easier to programmatically control the cutting to specific sizes and shapes, resulting in a relatively higher pass rate for electrode cutting.

[0060] However, during the laser cutting process of electrodes, defects such as molten burrs (molten beads) sometimes appear on the cut surface of the electrodes, which leads to a decrease in the pass rate of electrode cutting.

[0061] Based on the above considerations, in order to improve the pass rate of electrode cutting, this application proposes an electrode cutting device and a rectifier and rectifier block. The aforementioned electrode cutting device and rectifier and rectifier block, during use, facilitate the accumulation of protective gas within the cavity at the laser cutting position, thereby preventing oxidation of the cutting surface by the protective gas and oxygen in the air.

[0062] The electrode cutting equipment, rectifier, and rectifier block proposed in this application will be explained and described in detail below with specific implementation methods.

[0063] The electrode sheets cut by the electrode cutting equipment can be used in battery devices and corresponding electrical equipment. It is understood that these electrical devices can include, but are not limited to, mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships, and spacecraft, with spacecraft including airplanes, rockets, space shuttles, and spacecraft.

[0064] For ease of explanation, the following embodiments use a vehicle as an example of electrical equipment. Unless there are obvious contradictions, the following embodiments can also be applied to electrical equipment other than vehicles.

[0065] Reference Figure 1 The aforementioned electrical equipment 10 includes a battery device 20. The vehicle's battery device 20 can be located at the bottom, front, or rear of the vehicle. The battery device 20 can be used to power the vehicle; for example, it can serve as the vehicle's operating power source. This vehicle electrical equipment 10 may also include a controller 11 and a motor 12. The controller 11 controls the battery device 20 to supply power to the motor 12, for example, to power the vehicle's starting, navigation, and driving.

[0066] Reference Figure 2The battery device 20 includes a battery housing 21 and battery cell assemblies 22, with the battery cell assemblies 22 housed within the battery housing 21. The battery device 20 (Battery Apparatus) mentioned in the embodiments of this application may include one or more battery cell assemblies 22, which provide voltage and capacity. The battery cell assembly 22 may include multiple battery cells 221, which are connected in series, parallel, or mixed connections via a busbar, wherein a mixed connection can be understood as including both series and parallel connections.

[0067] The battery cell assembly 22 can be a battery module, which is formed by arranging and fixing multiple battery cells 221 together. For example, a battery module can be formed by bundling multiple battery cells 221 together with cable ties. In some embodiments, the battery cell assembly 22 can be housed in the battery housing 21 by fixing it to the battery housing 21. Of course, the battery cell assembly 22 may also include only one battery cell 221, and this embodiment is not limited to this.

[0068] In some embodiments, the battery housing 21 may include a first housing and a second housing. The first housing and the second housing are fastened together, thereby forming a closed space inside the battery housing 21 to house the aforementioned battery cells 221 or battery cell assemblies 22. Here, "closed" refers to covering or shutting down, which can be sealed or unsealed. Furthermore, the first housing may be a top cover or a bottom plate; the battery housing 21 may include a top cover, a frame, and a bottom plate, with the top cover and bottom plate respectively connected to the frame, thereby forming the aforementioned closed space inside the battery housing 21 to house the aforementioned battery cells 221 or battery cell assemblies 22. It is understood that the first housing and the second housing may each have an opening, thereby forming the aforementioned closed space by fastening together through their respective openings; of course, it is also possible that only one of the first housing and the second housing has an opening, for example, the first housing does not have an opening and the second housing has an opening, and this embodiment does not limit this.

[0069] In some embodiments, the battery device may be a battery pack, which may include a battery housing 21 and one or more battery cell assemblies 22 housed within the battery housing 21. In some embodiments, the battery housing 21 may be part of the chassis structure of the vehicle, the electrical device 10. For example, the top cover of the battery housing 21 may be at least part of the vehicle's floor, or the frame of the battery housing 21 may be at least part of the vehicle's crossbeams and longitudinal beams.

[0070] In some embodiments, the battery device 20 may also refer to an energy storage device, which may include one or more battery clusters to increase the voltage and capacity of the energy storage device. A battery cluster may include multiple individual battery cells 221, which are connected in series via a busbar to increase the voltage of the energy storage device. When the energy storage device includes multiple battery clusters, the multiple battery clusters are connected in parallel to increase the capacity of the energy storage device. The energy storage device may include a battery housing 21, with a door on at least one side. The energy storage device may include an energy storage container, an energy storage cabinet, etc.

[0071] It is understandable that the battery device 20 can not only serve as the operating power source for the vehicle, an electrical device 10, but also as the driving power source for the vehicle, thereby completely or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0072] Reference Figure 3 The aforementioned battery cell 221 is composed of a positive electrode, a negative electrode, a separator, and an electrolyte, and is charged and discharged through an electrochemical reaction. The battery cell 221 can be configured as a prismatic battery, a cylindrical battery, or a pouch battery. The battery cell 221 includes a casing 222, a cell, and terminals 223. The cell can be formed from the aforementioned electrode sheets through subsequent winding, stacking, and other processes, and is housed within the casing 222. The battery cell 221 includes positive and negative terminals 223; in the battery cell assembly 22, the terminals 223 can be connected to various busbars to achieve series, parallel, or mixed connections between the individual battery cells 221.

[0073] Reference Figure 4 In one embodiment of this application, the electrode cutting device 300 includes a carrier device 310, a laser generator 320, and a rectifier 330. The carrier device 310 is used to carry the electrode 230. The light-emitting part 321 of the laser generator 320 is disposed opposite to the carrier device 310, and the light-emitting part 321 is used to output a die-cutting laser 322. The die-cutting laser 322 is used to cut the electrode 230, for example, to die-cut electrode tabs 231 on the electrode 230. The rectifier 330 includes a rectifier block 4. The rectifier block 400 has a cavity 410 and a gas delivery channel 420. The cavity 410 passes through the rectifier block 400, and the two ends of the gas delivery channel 420 are respectively connected to the cavity 410 and the gas output device. The rectifier block 400 is located between the light-emitting part 321 and the carrier device 310. The end of the rectifier block 400 facing away from the light-emitting part 321 is used to abut against the electrode 230. The two ends of the cavity 410 open towards the light-emitting part 321 and the carrier device 310, respectively.

[0074] The carrying device 310 can be understood as a device for carrying loads. For example, the carrying device can be configured as a conveyor line, which may include conveyor rollers arranged side by side, or the conveyor line may include a conveyor belt, etc.

[0075] The laser generator 320 can be understood as a device for generating laser light. For example, the laser generator 320 may include a galvanometer as a component, thereby outputting the aforementioned die-cutting laser 322; wherein, the aforementioned light-emitting part 321 may be correspondingly disposed on the galvanometer. (Refer to...) Figure 4 The light-emitting part 321 and the supporting device 310 can be arranged opposite each other in the vertical direction as shown in the figure, so that the laser output by the light-emitting part 321 can cut the electrode 230, for example, the electrode tab 231 can be cut out at a preset position.

[0076] A gas output device can be understood as a device capable of outputting protective gas. For example, a gas output device may include a gas storage tank or cylinder for storing protective gas. It is understood that before using the aforementioned electrode cutting equipment 300, the operator can prepare the corresponding protective gas in advance, such as nitrogen or argon, to prevent oxidation at the cutting location of the electrode 230. The gas output device can be connected to the aforementioned gas delivery channel 420 via components such as gas pipes. It is understood that the operator can adjust the pressure and flow rate of the protective gas through the gas output device or valves on the corresponding connecting gas pipes to stabilize the gas flow field within the cutting area, thereby better preventing slag or dust contamination of the cutting surface.

[0077] The rectifier block 400 can be made of materials such as metal. The cavity 410 and gas delivery channel 420 on the rectifier block 400 can be formed by additive printing technology (such as 3D printing), casting, machining (such as drilling and milling). (Refer to...) Figure 4 The cavity 410 can extend through the rectifier block 400 in the vertical direction shown in the figure, which can be understood as the cavity 410 penetrating the rectifier block 400 in the vertical direction shown in the figure. Furthermore, along the direction through which the cavity 410 penetrates the rectifier block 400, for example, along the vertical direction shown in the figure, the rectifier block 400 has a first end face 401 and a second end face 402 arranged opposite to each other. For example, the first end face 401 can be set as the upper end face of the rectifier block 400, and the second end face 402 can be set as the lower end face of the rectifier block 400. In this case, the first end face 401 faces the light-emitting part 321, and the second end face 402 faces the supporting device 310. Correspondingly, the second end face 402 can be positioned away from the light-emitting part 321, and during use, the second end face 402 abuts against the electrode 230. Furthermore, corresponding to the relative movement between the light-emitting part 321 and the electrode 230, the cavity 410 can be designed to mimic the relative movement trajectory between the light-emitting part 321 and the electrode 230, which will not be elaborated upon here.

[0078] In use, the electrode cutting device 300 of the above embodiment allows the die-cutting laser 322 output from the light-emitting section 321 of the laser generator 320 to pass through the cavity 410 of the rectifier block 400 and cut the electrode 230, for example, by forming a cutting slit to cut out the tab 231. It is understood that after cutting, the portion of the electrode 230 containing the tab 231 (e.g., ...) remains. Figure 4 The upper left portion of the middle electrode 230 continues to be used in subsequent cell manufacturing processes, while the electrode 230 does not include the edge portion of the tab 231 (e.g., Figure 4 The lower right side of the intermediate electrode 230 forms excess material.

[0079] Furthermore, the gas delivery channel 420 of the rectifier block 400 can deliver protective gas from the gas output device into the cavity 410, which helps the protective gas in the cavity 410 to accumulate at the laser cutting position. The accumulation of protective gas can be understood as the flow rate of protective gas at that point being relatively slow, so that the accumulated protective gas can be used to cover the cutting area. This helps prevent the cutting surface from undergoing oxidation reaction with oxygen in the air, which helps reduce defects such as oxide bands and molten beads, thereby improving the pass rate of electrode cutting. It also helps reduce the consumption of protective gas by accumulating protective gas.

[0080] In some implementations, refer to Figure 5 and Figure 6 The gas delivery channel 420 includes a delivery section 421 and an output channel 422 connected together. The delivery section 421 is connected to a gas output device, for example, through a gas pipe or other component. The opening of the output channel 422 is connected to the cavity 410, which can be understood as the opening of the output channel 422 being located on the cavity wall of the cavity 410. Furthermore, the opening of the output channel 422 is arranged around the circumference of the cavity 410, which can be understood as the output channel 422 being an annular channel with its opening connected to the cavity 410. For example, if the cavity 410 extends vertically through the rectifier block 400, then the circumference of the cavity surrounds the vertical direction, and the opening of the output channel 422 is annular and parallel to the horizontal plane. The connected delivery section 421 and output channel 422 can be formed using additive printing technology, casting, or other techniques.

[0081] In this embodiment, the opening of the output slot 422 is arranged around the circumferential direction of the cavity 410, which facilitates the flow of protective gas to the cutting area from multiple directions, helps to form a more stable flow field in the cutting area, and reduces the risk of foreign matter such as molten slag and dust contaminating the cutting surface.

[0082] In some implementations, refer to Figure 7 , Figure 8 and Figure 9The aforementioned cavity 410 extends through the first end face 401 and the second end face 402 of the rectifier block 400, respectively. The slot opening of the output slot 422 is at a first distance from the first end face 401, and the slot opening of the output slot 422 is at a second distance from the second end face 402, the second distance being less than the first distance. It can be understood that the slot opening of the output slot 422 is farther from the first end face 401 (e.g., the upper end face) of the rectifier block 400, and the slot opening of the output slot 422 is closer to the second end face 402 (e.g., the lower end face) of the rectifier block 400.

[0083] In this embodiment, the opening of the output slot 422 is closer to the second end face 402 during the cutting process, and thus closer to the electrode 230, which is more conducive to the accumulation of protective gas in the cutting area.

[0084] In some implementations, refer to Figure 9 ,in Figure 9 for Figure 8 A magnified view of a portion at point B; where the distance L between the edge of the output slot 422 facing the second end face 402 and the second end face 402 is less than or equal to 2 mm, for example... Figure 9 In this context, distance L can be understood as the distance between the lower edge of the slot opening of output slot 422 and the second end face 402. Furthermore, this distance L can be greater than or equal to 0.1 mm and less than or equal to 2 mm.

[0085] In this embodiment, the opening of the output slot 422 is closer to the electrode 230 during the cutting process, which is more conducive to the accumulation of protective gas in the cutting area.

[0086] In some implementations, refer to Figure 9 The width direction of the slot opening of the output slot 422 is set along the direction through which the cavity 410 passes through the rectifier block 400, for example, along the vertical direction shown in the figure; wherein, the width W of the slot opening of the output slot 422 is less than or equal to 0.5 mm. Furthermore, the width W can be greater than or equal to 0.1 mm and less than or equal to 0.5 mm.

[0087] In this embodiment, the width of the opening of the output slot 422 is small, which helps the protective gas to flow more concentratedly to the cutting area, thereby making it more conducive to the protective gas to accumulate in the cutting area.

[0088] In some implementations, refer to Figure 4 and Figure 9 Along the direction toward the support device 310, the portion where the output slot 422 connects to the cavity 410 (e.g.) Figure 9 The left side portion of the output slot 422 is tilted, for example... Figure 9 The left side of the middle output slot 422 is tilted downwards to the left.

[0089] In this embodiment, the portion of the output slot 422 connected to the cavity 410 is inclined in the direction toward the bearing device 310, which facilitates the flow of protective gas toward the cutting area, thereby making it more conducive to the accumulation of protective gas in the cutting area.

[0090] In some embodiments, the electrode cutting apparatus 300 further includes a first suction device, which may include a vacuum pump, etc. (See reference...) Figure 4 and Figure 8 The rectifier block 400 also has a first suction channel 430 communicating with the first suction device, and the first suction channel 430 has a first suction port 431 communicating with the cavity 410; wherein, the first suction channel 430 can be formed by additive printing of the rectifier block 400, or by casting, machining (e.g., drilling). In addition, along the direction from the light-emitting part 321 to the carrier device 310, for example along the up and down direction in the figure, one end of the gas delivery channel 420 communicating with the cavity 410 (e.g., the left end in the figure) is located between the first suction port 431 and the carrier device 310; for example, in the figure, the left end of the gas delivery channel 420 is located below the first suction port 431, and the carrier device 310 is located below the left end of the gas delivery channel 420.

[0091] In this embodiment, the first suction channel 430 can adsorb foreign objects such as dust raised during the laser cutting process through the first suction port 431, thereby reducing the risk of foreign objects escaping to the outside and causing pollution. This can be understood as helping to reduce the risk of foreign objects escaping from the top of the cavity 410.

[0092] In some implementations, refer to Figure 8 The first suction channel 430 includes a first connecting section 432 and a first suction groove 433 connected together. The first connecting section 432 and the first suction groove 433 can be formed by additive printing, casting, or other technologies. Furthermore, the first connecting section 432 is connected to the first suction device. The opening of the first suction groove 433 forms the first suction port 431, which is connected to the cavity 410. The opening of the first suction groove 433 is arranged around the cavity 410 in the circumferential direction. For example, if the cavity 410 penetrates the rectifier block 400 in the vertical direction, then the circumferential direction of the cavity surrounds the vertical direction, and the opening of the first suction groove 433 is annular and parallel to the horizontal plane.

[0093] In this embodiment, the opening of the first suction groove 433 is arranged around the circumferential direction of the cavity 410, thereby enabling the adsorption of foreign objects such as dust in more locations and reducing the risk of foreign objects escaping to the outside.

[0094] In some embodiments, the electrode cutting equipment 300 further includes a second suction device, which may include a vacuum pump, etc. Furthermore, the second suction device may be the same device as the first suction device described above; however, the second suction device may also be a different device from the first suction device, and this embodiment does not impose any limitations on this. (Refer to...) Figure 4 , Figure 8 and Figure 9 The rectifier block 400 also has a second suction channel 440 communicating with the second suction device, and the second suction channel 440 has a second suction port 441. The second suction channel 440 can be formed by additive manufacturing of the rectifier block 400, or by casting, machining (e.g., drilling). Furthermore, the second suction port 441 is located on the end face of the rectifier block 400 facing the support device 310, for example, on the aforementioned second end face 402, or on the lower end face of the rectifier block 400, thereby facilitating the adsorption of foreign matter such as dust on the electrode 230.

[0095] In this embodiment, for foreign objects such as dust that may escape along the surface of the electrode 230, the second suction channel 440 can adsorb them through the second suction port 441, thereby reducing the risk of foreign objects escaping to the outside and causing contamination. In addition, the second suction port 441 can provide adsorption force to the electrode 230, reducing the vibration and displacement of the electrode 230 during the cutting process and improving the cutting accuracy of the electrode 230.

[0096] In some implementations, refer to Figure 8 and Figure 9 The second suction channel 440 includes a second connecting section 442 and a second suction groove 443 connected together. The second connecting section 442 and the second suction groove 443 can be formed by additive printing technology, casting, or other technologies. The second connecting section 442 is connected to the second suction device. The groove opening of the second suction groove 443 forms a second suction port 441. The groove opening of the second suction groove 443 (which can be understood as the second suction port 441) is provided on the end face of the rectifier block 400 facing the support device 310, for example, on the second end face 402, or on the lower end face of the rectifier block 400. In addition, the groove opening of the second suction groove 443 is arranged around the cavity 410 in the circumferential direction. For example, if the cavity 410 penetrates the rectifier block 400 in the vertical direction, then the circumferential direction of the cavity surrounds the vertical direction, and the groove opening of the second suction groove 443 is annular and parallel to the horizontal plane.

[0097] In this embodiment, the opening of the second suction groove 443 is arranged around the cavity 410 in the circumferential direction, which can not only adsorb foreign objects such as dust in more positions to reduce the risk of pollution, but also adsorb the electrode 230 in more positions to improve the cutting accuracy of the electrode.

[0098] In some implementations, refer to Figure 9 The rectifier block 400 has an inclined surface 444 on the edge of its end face facing the support device 310. This can be understood as the edge of the second end face 402 having the inclined surface 444. The inclined surface 444 is inclined in a direction away from the support device 310, for example... Figure 9 The inclined surface 444 is inclined upward and extends to the opening of the second suction groove 443.

[0099] In this embodiment, the inclined surface 444 extends to the opening of the second suction groove 443, which facilitates the formation of a stable airflow towards the second suction port 441 at the edge of the rectifier block 400. This not only improves the success rate of adsorbing foreign objects near the edge of the rectifier block 400, but also enables more stable adsorption of the electrode 230.

[0100] Reference Figures 4 to 9In one embodiment of this application, the electrode cutting device 300 includes a support device 310, a laser generator 320, and a rectifier 330. The support device 310 is used to support the electrode 230. The light-emitting part 321 of the laser generator 320 is disposed opposite to the support device 310. The light-emitting part 321 is used to output a die-cutting laser 322, which is used to cut the electrode 230. The rectifier 330 includes a rectifier block 400 and a gas output device. The rectifier block 400 has a cavity 410 and a gas delivery channel 420. The cavity 410 passes through the rectifier block 400, and the two ends of the gas delivery channel 420 are respectively connected to the cavity 410 and the gas output device. The rectifier block 400 is located between the light-emitting part 321 and the support device 310. The end of the rectifier block 400 facing away from the light-emitting part 321 is used to abut against the electrode 230. The two openings of the cavity 410 are respectively facing the light-emitting part 321 and the support device 310. The gas delivery channel 420 includes a delivery section 421 and an output slot 422 connected to each other. The delivery section 421 is connected to a gas output device. The opening of the output slot 422 is connected to a cavity 410, and the opening of the output slot 422 is arranged around the cavity 410 in a circumferential direction. Along the direction through which the cavity 410 penetrates the rectifier block 400, the rectifier block 400 has a first end face 401 and a second end face 402 arranged opposite to each other. The cavity 410 penetrates to both the first end face 401 and the second end face 402. The first end face 401 faces the light-emitting part 321, and the second end face 402 is used to abut against the electrode 230. The opening of the output slot 422 has a first distance from the first end face 401, and the opening of the output slot 422 has a second distance from the second end face 402, the second distance being less than the first distance. The distance between the edge of the opening of the output slot 422 facing the second end face 402 and the second end face 402 is less than or equal to 2 mm. The width of the slot opening of the output slot 422 is set along the direction through which the cavity 410 passes through the rectifier block 400, and the width of the slot opening of the output slot 422 is less than or equal to 0.5 mm. The portion of the output slot 422 connected to the cavity 410 is inclined along the direction toward the support device 310. The electrode cutting equipment 300 also includes a first suction device, and the rectifier block 400 further has a first suction channel 430 communicating with the first suction device. The first suction channel 430 has a first suction port 431 communicating with the cavity 410. Along the direction from the light-emitting portion 321 to the support device 310, one end of the gas delivery channel 420 communicating with the cavity 410 is located between the first suction port 431 and the support device 310. The first suction channel 430 includes a first connecting section 432 and a first suction groove 433 connected to each other. The first connecting section 432 is connected to the first suction device. The groove opening of the first suction groove 433 forms a first suction port 431. The groove opening of the first suction groove 433 is connected to the cavity 410. The groove opening of the first suction groove 433 is arranged around the cavity 410 in the circumferential direction.The electrode cutting equipment 300 also includes a second suction device. The rectifier block 400 further has a second suction channel 440 communicating with the second suction device. The second suction channel 440 has a second suction port 441, which is disposed on the end face of the rectifier block 400 facing the support device 310. The second suction channel 440 includes a second connecting section 442 and a second suction groove 443 connected to each other. The second connecting section 442 communicates with the second suction device. The opening of the second suction groove 443 forms the second suction port 441. The opening of the second suction groove 443 is disposed on the end face of the rectifier block 400 facing the support device 310, and the opening of the second suction groove 443 is arranged around the cavity 410 in the circumferential direction. The edge of the end face of the rectifier block 400 facing the support device 310 is provided with an inclined surface 444. The inclined surface 444 is inclined in a direction away from the support device 310 and extends to the opening of the second suction groove 443.

[0101] This application also provides a rectifier 330, which can be used in the above-mentioned electrode cutting equipment 300. The rectifier 330 includes the above-mentioned rectifier block 400 and a gas output device.

[0102] This application also provides a rectifier block 400, which can be used in the rectifier 330 of the electrode cutting equipment 300 described above. The rectifier block 400 has the cavity 410 and the gas delivery channel 420 described above.

[0103] It is understood that since the rectifier 330 and the rectifier block 400 adopt all the technical solutions of all embodiments of the corresponding part of the electrode cutting equipment 300, they have at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0104] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A pole piece cutting apparatus, characterized by, The electrode cutting equipment includes: The support device is used to support the electrode sheet; A laser generator, wherein the light-emitting part of the laser generator is disposed opposite to the carrier device, the light-emitting part is used to output a die-cutting laser, and the die-cutting laser is used to cut the electrode sheet; A rectifier, comprising a rectifier block and a gas output device, wherein the rectifier block has a cavity and a gas delivery channel; the cavity extends through the rectifier block, and the two ends of the gas delivery channel are respectively connected to the cavity and the gas output device; The rectifier block is located between the light-emitting section and the carrier device. The end of the rectifier block facing away from the light-emitting section is used to abut the electrode. The two openings of the cavity face the light-emitting section and the carrier device, respectively.

2. The pole piece cutting apparatus of claim 1, wherein, The gas delivery channel includes a delivery section and an output channel connected to each other. The delivery section is connected to the gas output device. The opening of the output channel is connected to the cavity, and the opening of the output channel is arranged around the cavity in a circumferential direction.

3. The pole piece cutting apparatus of claim 2, wherein, Along the direction through which the cavity penetrates the rectifier block, the rectifier block has a first end face and a second end face that are disposed opposite to each other; the cavity penetrates through the first end face and the second end face respectively, the first end face facing the light-emitting part, and the second end face being used to abut against the electrode; The opening of the output slot is at a first distance from the first end face, and the opening of the output slot is at a second distance from the second end face, wherein the second distance is less than the first distance.

4. The pole piece cutting apparatus of claim 3, wherein, The distance between the edge of the output slot facing the second end face and the second end face is less than or equal to 2 mm.

5. The electrode cutting equipment as described in any one of claims 2 to 4, characterized in that, The width of the slot opening of the output slot is set along the direction in which the cavity penetrates the rectifier block, and the width of the slot opening of the output slot is less than or equal to 0.5 mm.

6. The pole piece cutting apparatus of any one of claims 2 to 4, wherein, Along the direction toward the bearing device, the portion of the output slot that connects to the cavity is inclined.

7. The pole piece cutting apparatus of any one of claims 1 to 4, wherein, The electrode cutting equipment further includes a first suction device, and the rectifier block also has a first suction channel communicating with the first suction device. The first suction channel has a first suction port communicating with the cavity. Along the direction from the light-emitting part to the carrier device, one end of the gas delivery channel communicating with the cavity is disposed between the first suction port and the carrier device.

8. The pole piece cutting apparatus of claim 7, wherein, The first suction channel includes a first connecting section and a first suction groove connected to each other. The first connecting section is connected to the first suction device. The opening of the first suction groove forms the first suction port. The opening of the first suction groove is connected to the cavity. The opening of the first suction groove is arranged around the cavity in the circumferential direction.

9. The pole piece cutting apparatus of any one of claims 1 to 4, wherein, The electrode cutting equipment further includes a second suction device, and the rectifier block also has a second suction channel communicating with the second suction device. The second suction channel has a second suction port, which is disposed on the end face of the rectifier block facing the support device.

10. The electrode cutting equipment as described in claim 9, characterized in that, The second suction channel includes a second connecting section and a second suction groove connected to each other. The second connecting section is in communication with the second suction device. The groove opening of the second suction groove forms a second suction port. The groove opening of the second suction groove is disposed on the end face of the rectifier block facing the bearing device. The groove opening of the second suction groove is arranged around the cavity in the circumferential direction.

11. The pole piece cutting apparatus of claim 10, wherein, The rectifier block has an inclined surface on its edge facing the end face of the support device. The inclined surface is inclined in a direction away from the support device and extends to the opening of the second suction groove.

12. A rectifier characterized by The rectifier is used in an electrode cutting device, which includes a support device and a laser generator. The support device is used to support the electrode. The light-emitting part of the laser generator is disposed opposite to the support device and is used to output a die-cutting laser for cutting the electrode. The rectifier includes a rectifier block and a gas output device. The rectifier block has a cavity and a gas delivery channel. The cavity extends through the rectifier block, and the two ends of the gas delivery channel are respectively connected to the cavity and the gas output device. The rectifier block is positioned between the light-emitting section and the carrier device. One end of the rectifier block facing away from the light-emitting section is used to abut against the electrode. The two openings of the cavity face the light-emitting section and the carrier device, respectively.

13. A rectifier block characterized by The rectifier block is used as a rectifier in the electrode cutting equipment. The electrode cutting equipment includes a support device and a laser generator. The support device is used to support the electrode. The light-emitting part of the laser generator is arranged opposite to the support device. The light-emitting part is used to output a die-cutting laser, which is used to cut the electrode. The rectifier includes a gas output device, and the rectifier block has a cavity and a gas delivery channel; the cavity extends through the rectifier block, and the two ends of the gas delivery channel are respectively connected to the cavity and the gas output device; The rectifier block is positioned between the light-emitting section and the carrier device. One end of the rectifier block facing away from the light-emitting section is used to abut against the electrode. The two openings of the cavity face the light-emitting section and the carrier device, respectively.

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