Dust removal mechanism, laser die-cutting device and pole piece manufacturing equipment

Abstract

The present application discloses a dust removal mechanism, a laser die-cutting device and a pole piece manufacturing device. The dust removal mechanism includes a first shell and an air supply component. The first shell is used to be arranged outside the lens of the laser cutting mechanism to form a first cavity with the lens. The first shell has a first side located in the first cavity and facing the lens. The first side is provided with a plurality of first air outlets and a first channel running through the first shell in a first direction, and the first channel is used for laser to pass through. The plurality of first air outlets are arranged at intervals along the periphery of the first channel. The first direction is parallel to the extension direction of the laser. The air supply component is used to provide gas to the first cavity through the plurality of first air outlets. The technical solution provided in the present application can improve the production quality of batteries.

Description

Technical Field

[0001] The present application relates to the field of battery production, and more specifically, to a dust removal mechanism, a laser die-cutting device and a pole piece manufacturing equipment. Background Art

[0002] Energy conservation and emission reduction are the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages in energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in their development.

[0003] In the development of battery technology, how to improve the production quality of batteries is a technical problem that needs to be solved urgently. Utility Model Content

[0004] The embodiments of the present application provide a dust removal mechanism, a laser die-cutting device and a pole piece manufacturing equipment, which can improve the production quality of batteries.

[0005] In a first aspect, an embodiment of the present application provides a dust removal mechanism including a first shell and an air supply component. The first shell is used to be arranged outside the lens of the laser cutting mechanism to form a first cavity with the lens. The first shell has a first side located in the first cavity and facing the lens. The first side is provided with a plurality of first air outlets and a first channel running through the first shell in a first direction, and the first channel is used for laser to pass through. The plurality of first air outlets are arranged at intervals along the periphery of the first channel. The first direction is parallel to the extension direction of the laser. The air supply component is used to provide gas to the first cavity through the plurality of first air outlets.

[0006] In the technical solution of the embodiment of the present application, a plurality of first air outlets are arranged at intervals along the periphery of the first channel, and the air supply component provides gas to the first cavity through the plurality of first air outlets, so that the air supply component can evenly provide gas to the first cavity, thereby increasing the air pressure in the first cavity, and thereby forming a positive pressure in the first channel relative to the outside world. As a result, the gas is discharged from the first cavity through the first channel, thereby limiting the debris and external dust generated during the cutting of the pole piece from entering the first cavity through the first channel and being adsorbed on the lens. This reduces the risk of the laser beam quality being reduced due to dust contamination of the field lens, thereby affecting the pole piece cutting quality, thereby improving the production quality of the battery.

[0007] In some embodiments, the cross-sectional area of ​​the first channel gradually decreases in a direction away from the first cavity.

[0008] In the above scheme, the cross-sectional area of ​​the first channel gradually decreases in the direction away from the first cavity, so that when the gas is discharged from the first cavity through the first channel, the movement speed gradually increases, thereby reducing the risk of debris and external dust generated during pole piece cutting entering the first cavity through the first channel.

[0009] In some embodiments, a second cavity and multiple second channels are disposed inside the first shell, the first cavity and the second cavity are spaced apart along the first direction, the multiple second channels respectively connect the second cavity and the multiple first air outlets, and the air supply component is used to provide gas to the second cavity.

[0010] In the above scheme, the gas supply component is used to provide gas to the second cavity, and the gas enters the first cavity through the second channel and the first gas outlet, and then the gas provided by the gas supply component is buffered by the second cavity, thereby reducing the flow rate of the gas when entering the first cavity, thereby reducing the risk of gas flow turbulence in the first cavity and the first channel.

[0011] In some embodiments, the second cavity is an annular cavity extending along the outer circumference of the first channel, and the extension directions of the plurality of second channels are parallel to the first direction.

[0012] In the above solution, the second cavity is an annular cavity extending along the periphery of the first channel, and the extension direction of the plurality of second channels is parallel to the first direction, so that the gas provided by the gas supply component can be more evenly distributed around the periphery of the first channel after entering the second cavity, and enter the first cavity along the first direction through the plurality of second channels. The gas in the second cavity can enter the first cavity more evenly, thereby reducing the risk of turbulence in the flow direction of the gas in the first cavity and the first channel due to vortex generated when the gas enters the first cavity.

[0013] In some embodiments, the first shell has a second side located in the second cavity and away from the first cavity along the first direction. The second side is provided with a plurality of second air outlets, and the plurality of second air outlets are arranged at intervals along the periphery of the first channel. A third cavity, a first air inlet and a plurality of third channels are arranged inside the first shell. The first cavity, the second cavity and the third cavity are arranged at intervals along the first direction. The plurality of third channels are respectively connected to the third cavity and the plurality of second air outlets, and the gas supply component is used to provide gas to the third cavity through the first air inlet.

[0014] In the above scheme, the gas supply component is used to provide gas to the third cavity, and the gas enters the second cavity through the third channel and the second gas outlet, and then the gas provided by the gas supply component is buffered by the third cavity, thereby reducing the flow rate of the gas entering the second cavity, thereby reducing the flow rate of the gas when entering the first cavity, thereby reducing the risk of gas flow disorder in the first cavity and the first channel.

[0015] In some embodiments, the first air inlet is a plurality of first air inlets arranged at intervals along the outer circumference of the first shell.

[0016] In the above scheme, there are multiple first air inlets arranged at intervals along the outer periphery of the first shell, so that the gas provided by the air supply component to the third cavity can enter the third cavity relatively evenly, thereby reducing the risk of gas flow disorder in the third cavity, the second cavity, the first cavity and the first channel.

[0017] In some embodiments, the dust removal mechanism further includes a second housing. Along the first direction, the first housing has a third side away from the lens, and the second housing is disposed on the third side. The second housing has a fourth channel connected to the first channel, and the fourth channel is used for laser to pass through.

[0018] In the above scheme, by providing a second shell, and the second shell has a fourth channel connected to the first channel, the fourth channel is used for the laser to pass through. Thus, the gas in the first cavity is discharged from the first cavity through the first channel and the fourth channel in sequence, thereby reducing the risk of debris and external dust generated during the cutting of the pole piece entering the first cavity through the fourth channel and the first channel in sequence.

[0019] In some embodiments, along the second direction, the second housing has a fourth side and a fifth side that are arranged opposite to each other, and the second direction is perpendicular to the first direction. The fourth side is provided with a fifth channel connected to the fourth channel. The fifth channel extends to the fifth side along the second direction, and the gas supply component is further used to provide gas to the fifth channel.

[0020] In the above scheme, the fourth side is provided with a fifth channel extending to the fifth side, and the fifth channel is connected to the fourth channel. The gas supply component is also used to provide gas to the fifth channel so that the gas moves in the second direction in the fifth channel. On the one hand, when the debris and external dust generated during the cutting of the pole piece pass through the connection between the fourth channel and the fifth channel along the first direction, they are restricted from continuing to move in the first direction, thereby reducing the risk of debris and external dust generated during the cutting of the pole piece entering the first cavity; on the other hand, when the gas in the first cavity passes through the connection between the fourth channel and the fifth channel, it drives the gas discharged from the first cavity to move in the second direction, thereby reducing the risk of the pole piece shaking due to the gas discharged from the first cavity touching the pole piece, thereby reducing the risk of the pole piece cutting quality decreasing.

[0021] In some embodiments, the fifth channel is a plurality of channels spaced apart along the first direction.

[0022] In the above scheme, the fifth channel is arranged in a plurality of intervals along the first direction. On the one hand, when the debris and external dust generated during the cutting of the pole piece enter the fourth channel along the first direction, they will pass through the connection between the fourth channel and the fifth channel for many times, thereby further reducing the risk of the debris and external dust generated during the cutting of the pole piece entering the first cavity; on the other hand, when the gas discharged from the first cavity moves along the fourth channel, it will pass through the connection between the fourth channel and the fifth channel for many times, thereby further reducing the risk of the gas discharged from the first cavity touching the pole piece, causing the pole piece to shake, thereby reducing the risk of the pole piece cutting quality.

[0023] In some embodiments, along the third direction, two opposite sides of the fifth channel respectively exceed two opposite sides of the fourth channel, and the first direction, the second direction and the third direction are perpendicular to each other.

[0024] In the above scheme, the two relative sides of the fifth channel in the third direction respectively exceed the two relative sides of the fourth channel in the third direction, so that the gas moving along the second direction in the fifth channel can cover the fourth channel, thereby further reducing the risk of debris and external dust generated during the cutting of the pole piece entering the first cavity, and further reducing the risk of the gas discharged from the first cavity touching the pole piece, causing the pole piece to shake, thereby reducing the quality of the pole piece cutting.

[0025] In some embodiments, the cross section of the first channel is rectangular, the cross section of the fourth channel is rectangular, and the width direction of the cross section of the fourth channel is parallel to the second direction.

[0026] In the above scheme, the cross section of the fourth channel is rectangular, and the width direction of the cross section of the fourth channel is parallel to the second direction. Thus, the size of the fourth channel in the second direction is reduced, and then the size of the connection between the fourth channel and the fifth channel in the second direction is reduced. Thus, when the gas moving in the fifth channel along the second direction passes through the connection between the fourth channel and the fifth channel, the distance moved in the fourth channel is shorter. Thus, the risk of gas flow disorder in the fifth channel is reduced.

[0027] In some embodiments, the fifth channel includes a first segment disposed on the fourth side and a second segment disposed on the fifth side, and on a plane perpendicular to the second direction, an orthographic projection of the first segment is located within an orthographic projection of the second segment.

[0028] In the above scheme, on the plane perpendicular to the second direction, the orthographic projection of the first segment is located within the orthographic projection of the second segment, thereby reducing the risk of gas in the first segment colliding with the side wall of the fourth channel away from the first segment in the second direction after passing through the fourth channel, thereby causing gas flow turbulence.

[0029] In some embodiments, the dust removal mechanism further includes a third shell, which is disposed on the fourth side and encloses a portion of the fourth side to form a fourth cavity. The fourth cavity is connected to the first section, the third shell is provided with a second air inlet, and the air supply component is further used to provide gas to the fourth cavity through the second air inlet.

[0030] In the above scheme, the gas supply component is used to provide gas to the fourth cavity, and the gas is discharged from the fourth cavity through the fifth channel, and then the gas provided by the gas supply component is buffered by the fourth cavity, thereby reducing the flow rate of the gas when entering the fifth channel, thereby reducing the risk of gas flow disorder in the fifth channel.

[0031] In some embodiments, the first housing includes a first body and a second body. The first body is annular, and the axis of the first body is parallel to the first direction. Along the first direction, the first body has a sixth side and a seventh side arranged in sequence, and the sixth side is used to cover the non-lens area of ​​the laser cutting mechanism. The second body, the first side is arranged on the second body, and the second body is connected to the seventh side to form a first cavity with the lens and the inner wall of the first body.

[0032] In the above solution, the first housing includes a first body and a second body, and the first body is connected to the laser cutting mechanism. On the one hand, when the laser cutting mechanism needs to be repaired, the first housing is split, which is more conducive to the lens inspection and cleaning by disassembling the first body and the second body. On the other hand, the split first housing is easier to manufacture than the integrated first housing, so the manufacturing cost of the first housing can also be reduced.

[0033] In some embodiments, the dust removal mechanism further includes a seal, and along the first direction, the seal is located between the laser cutting mechanism and the sixth side.

[0034] In the above solution, the dust removal mechanism further includes a seal, and along the first direction, the seal is located between the non-lens area of ​​the laser cutting mechanism and the sixth side. Therefore, when the first housing is connected to the laser cutting mechanism, the sixth side can cooperate with the non-lens area of ​​the laser cutting mechanism to press the seal to fill the gap between the sixth side and the non-lens area of ​​the laser cutting mechanism, thereby reducing the risk of dust entering the first cavity through the gap to contaminate the lens.

[0035] In some embodiments, along the first direction, the first body has an eighth side and a seventh side that are arranged opposite to each other. The eighth side is recessed toward the seventh side to form a countersink, and the sixth side is arranged at the bottom of the countersink. The countersink is sleeved outside the laser cutting mechanism.

[0036] In the above scheme, the countersunk hole is sleeved outside the laser cutting mechanism. On the one hand, the first body is partially located outside the outer peripheral side of the laser cutting mechanism, thereby reducing the risk of direct collision between external components and the laser cutting mechanism; on the other hand, the laser cutting mechanism forms a structural limit on the first body through the countersunk hole to limit the movement of the first body relative to the laser cutting mechanism in a direction perpendicular to the first direction.

[0037] In a second aspect, an embodiment of the present application provides a laser die-cutting device including a laser cutting mechanism and a dust removal mechanism provided in any one embodiment of the first aspect.

[0038] In the above scheme, since the laser die-cutting device includes the dust removal mechanism provided by any one of the embodiments of the first aspect, the laser die-cutting device also has the beneficial effects of the embodiments of the first aspect.

[0039] In a third aspect, an embodiment of the present application provides a pole piece manufacturing device including the laser die-cutting device provided in the second aspect.

[0040] In the above scheme, since the pole piece manufacturing equipment includes any laser die-cutting device provided in the second aspect, and since the laser die-cutting device includes the dust removal mechanism provided in any embodiment of the first aspect, the pole piece manufacturing equipment also has the beneficial effects of the embodiments of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 A schematic diagram of the structure of a dust removal mechanism provided in some embodiments of the present application;

[0043] Figure 2 for Figure 1 Sectional view of AA in the middle;

[0044] Figure 3 for Figure 2 Cross-sectional view of the middle BB;

[0045] Figure 4 for Figure 2 Enlarged view of part C;

[0046] Figure 5 for Figure 2 Cross-sectional view of the middle DD;

[0047] Figure 6A schematic structural diagram of another dust removal mechanism provided in some embodiments of the present application;

[0048] Figure 7 for Figure 6 Sectional view of EE;

[0049] Figure 8 for Figure 6 Enlarged view of part F;

[0050] Fig. 9 for Figure 7 Enlarged view of section G;

[0051] Fig.10 An exploded view of a first housing provided in some embodiments of the present application;

[0052] Fig.11 An exploded view of a first body and a laser cutting mechanism provided for some embodiments of the present application.

[0053] Icon: 100-dust removal mechanism;

[0054] 10-first shell; 11-first cavity; 12-first channel; 13-second channel; 14-second cavity; 15-third channel; 16-third cavity; 17-first air inlet;

[0055] 10A-first main body; 10a-first protrusion; 10b-first base; 10c-seventh side; 10d-sixth side; 10e-eighth side;

[0056] 10B-second body; 101-first buffer; 101A-first side; 101B-first air outlet; 101C-first concave portion; 101D-second convex portion; 101E-first annular convex portion; 101F-first annular groove;

[0057] 102-second buffer; 102A-second side; 102B-second air outlet; 102C-third convex portion; 102D-second annular convex portion; 102E-second annular groove;

[0058] 103-cover plate; 103A-third side;

[0059] 104-connecting piece; 105-locking piece;

[0060] 20-second housing; 20A-fourth side; 20B-fifth side; 21-fourth channel; 22-fifth channel; 22A-first section; 22B-second section;

[0061] 30-third shell; 31-fourth cavity; 32-second air inlet;

[0062] 40-lock buckle;

[0063] 200-laser cutting mechanism; 210-lens; 220-laser;

[0064] X-first direction; Y-second direction; Z-third direction. DETAILED DESCRIPTION

[0065] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0066] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0067] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0068] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0069] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0070] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0071] The term "plurality" used in the present application refers to two or more (including two).

[0072] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0073] Battery cells include, but are not limited to, lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-hydrogen batteries, nickel-cadmium batteries, lead-acid batteries, and the like.

[0074] The core component of the battery that can achieve repeated charge and discharge functions is the electrode assembly in the battery cell. The electrode assembly includes pole pieces and diaphragms. The pole pieces include positive pole pieces and negative pole pieces. The diaphragm is usually arranged between the positive pole piece and the negative pole piece to insulate the positive pole piece and the negative pole piece from each other. The material of the diaphragm can be PP (polypropylene) or PE (polyethylene), etc. The battery cell mainly relies on the movement of metal ions between the positive pole piece and the negative pole piece to work. Among them, the pole piece includes a current collector and an active material layer. The current collector has a coating area coated with an active material layer and an uncoated area not coated with an active material layer along the width direction of the pole piece. A pole ear is cut on the current collector that is not coated with an active material layer, and the pole ear realizes the charging and discharging of the electrode assembly. The current collector can be a metal foil, such as copper foil, aluminum foil, etc. In the manufacturing process of the pole piece, there are die-cutting process and slitting process. The die-cutting process is the process of cutting the pole ear on the uncoated area of ​​the pole piece with a die-cutting device, and the slitting process is the process of cutting and shaping the coated area of ​​the pole piece with a slitting device.

[0075] When the die-cutting device cuts the uncoated area of ​​the pole piece, it generally cuts through a cutting mechanism, and the uncoated area of ​​the pole piece is cut by moving the pole piece relative to the cutting mechanism so that the cutting mechanism moves relative to the uncoated area of ​​the pole piece.

[0076] Both the die-cutting device and the slitting device can use a laser cutting mechanism as the cutting mechanism. When the laser cutting mechanism cuts the pole piece, the scattered dust of copper, aluminum, graphite, etc. in the cutting room increases greatly, and the lens used for focusing and outputting the laser in the laser cutting mechanism is greatly affected by the working environment and the cleanliness of the lens surface.

[0077] In view of this, in order to improve the stability of laser cutting, and thus improve the production quality of batteries. The present application provides a dust removal mechanism including a first shell and an air supply component. The first shell is used to be arranged outside the lens of the laser cutting mechanism to form a first cavity with the lens. The first shell has a first side located in the first cavity and facing the lens. The first side is provided with a plurality of first air outlets and a first channel that runs through the first shell along the laser extension direction, and the first channel is used for laser passing through. The plurality of first air outlets are arranged at intervals along the periphery of the first channel. The air supply component is used to provide gas to the first cavity through the plurality of first air outlets. So that the air supply component can evenly provide gas to the first cavity, thereby increasing the air pressure in the first cavity, and thereby forming a positive pressure in the first channel relative to the outside. Thereby, the gas is discharged from the first cavity through the first channel, thereby limiting the debris and external dust generated during the cutting of the pole piece from entering the first cavity through the first channel and adsorbing on the lens. Thereby reducing the risk of the laser beam quality being reduced due to dust contamination of the field lens, thereby affecting the pole piece cutting quality, thereby improving the production quality of the battery.

[0078] The specific structure of the dust removal mechanism is described in detail below in conjunction with the accompanying drawings.

[0079] Please refer to Figure 1 , and please refer to Figure 2 , Figure 3 and Figure 4 , Figure 1 A schematic diagram of the structure of a dust removal mechanism 100 provided in some embodiments of the present application, Figure 2 for Figure 1 The cross-sectional view of AA in the figure, Figure 3 for Figure 2 The cross-sectional view of the BB, Figure 4 for Figure 2 Magnified view of part C.

[0080] The embodiment of the present application provides a dust removal mechanism 100 including a first shell 10 and an air supply component (not shown in the figure). The first shell 10 is used to be arranged outside the lens 210 of the laser cutting mechanism 200 to form a first cavity 11 with the lens 210. The first shell 10 has a first side 101A located in the first cavity 11 and facing the lens 210. The first side 101A is provided with a plurality of first air outlets 101B and a first channel 12 that runs through the first shell 10 along a first direction X, and the first channel 12 is used for the laser 220 to pass through. The plurality of first air outlets 101B are arranged at intervals along the periphery of the first channel 12. The first direction X is parallel to the extension direction of the laser 220. The air supply component (not shown in the figure) is used to provide gas to the first cavity 11 through the plurality of first air outlets 101B.

[0081] The first direction X is the extending direction of the laser 220 .

[0082] The first shell 10 is a component of the dust removal mechanism 100 and is used to surround the lens 210 of the laser cutting mechanism 200 to form a first cavity 11 .

[0083] Exemplarily, the first shell 10 is a hollow structure with an opening at one end, and the lens 210 of the laser cutting mechanism 200 can be inserted into the first shell 10 through the opening side, and the other peripheral sides of the laser cutting mechanism 200 cover the opening side to form the first cavity 11; alternatively, the lens 210 of the laser cutting mechanism 200 can also directly cover the opening side to form the first cavity 11.

[0084] The gas supply component (not shown in the figure) is a component used to provide gas to the first cavity 11. It can be understood that the gas supply component (not shown in the figure) can be a gas supply pipe, or can be a mechanism or device that can provide gas. Exemplarily, the gas supply component (not shown in the figure) can be a gas tank, a fan, etc.

[0085] It can be understood that the above-mentioned gas can be one or more of air, carbon dioxide, nitrogen or inert gas.

[0086] The first side 101A is a surface of the first housing 10 located in the first cavity 11 and facing the lens 210. Optionally, the first side 101A may be a plane perpendicular to the first direction X.

[0087] The cross section of the first channel 12 may be circular, oval or square.

[0088] Reference Figure 3 The first gas outlet 101B may be arranged in a circle at intervals along the outer periphery of the first channel 12, or may be arranged in multiple circles at intervals along the outer periphery of the first channel 12. Thus, the gas provided by the gas supply component (not shown in the figure) to the first cavity 11 can enter the first cavity 11 uniformly, so that the pressure of different areas of the first cavity 11 is uniformly increased, and the gas flow disorder caused by the pressure difference in some areas of the first cavity 11 is reduced.

[0089] Reference Figure 2 The gas supply component (not shown) provides gas to the first cavity 11 to increase the pressure in the first cavity 11, thereby driving the gas in the first cavity 11 to be discharged from the first cavity 11 along the first channel 12 along the N1 direction. The N1 direction is parallel to the first direction X.

[0090] In the above scheme, a plurality of first gas outlets 101B are arranged at intervals along the outer periphery of the first channel 12, and the gas supply component (not shown in the figure) provides gas to the first cavity 11 through the plurality of first gas outlets 101B, so that the gas supply component (not shown in the figure) can evenly provide gas to the first cavity 11, thereby increasing the gas pressure in the first cavity 11, and thereby forming a positive pressure in the first channel 12 relative to the outside. As a result, the gas is discharged from the first cavity 11 through the first channel 12 along the N1 direction, thereby limiting the sundries and external dust generated during the cutting of the pole piece from entering the first cavity 11 through the first channel 12 and being adsorbed on the lens 210. As a result, the risk of the laser 220 beam quality being reduced due to dust contamination of the field lens, thereby affecting the pole piece cutting quality, thereby improving the production quality of the battery.

[0091] According to some embodiments of this application, please refer to Figure 1 and Figure 2 , along the direction away from the first cavity 11, the cross-sectional area of ​​the first channel 12 gradually decreases.

[0092] In an embodiment where the cross-section of the first channel 12 is circular, the diameter of the cross-section of the first channel 12 gradually decreases in the direction away from the first cavity 11; in an embodiment where the cross-section of the first channel 12 is square, the side length of the cross-section of the first channel 12 decreases proportionally in the direction away from the first cavity 11.

[0093] It can be understood that according to the continuity principle, the mass flow rate of the gas must remain unchanged. The mass flow rate refers to the mass of the gas passing through a certain cross-sectional area per unit time, which can be expressed as mass flow rate = gas density × flow rate × cross-sectional area of ​​the first channel 12. Therefore, if the cross-sectional area of ​​the first channel 12 is reduced, in order to keep the mass flow rate unchanged, the flow rate of the gas must be increased.

[0094] In the above scheme, the cross-sectional area of ​​the first channel 12 gradually decreases in the direction away from the first cavity 11, so that when the gas is discharged from the first cavity 11 through the first channel 12, the movement speed gradually increases, thereby reducing the risk of debris and external dust generated during pole piece cutting entering the first cavity 11 through the first channel 12.

[0095] According to some embodiments of this application, please refer to Figure 2 , Figure 3 and Figure 4 A second cavity 14 and a plurality of second channels 13 are provided inside the first shell 10. The first cavity 11 and the second cavity 14 are spaced apart along the first direction X. The plurality of second channels 13 respectively connect the second cavity 14 and the plurality of first gas outlets 101B. An air supply component (not shown in the figure) is used to provide gas to the second cavity 14.

[0096] The second cavity 14 is a cavity disposed in a wall portion of the first housing 10 away from the lens 210 in the first direction X. Exemplarily, the second cavity 14 may be a cavity located on one side of the first channel 12 , or may be annularly designed around the outer circumference of the first channel 12 .

[0097] The second channel 13 is a channel in the first housing 10 connecting the first air outlet 101B and the second cavity 14 .

[0098] In the above scheme, the gas supply component (not shown in the figure) is used to provide gas to the second cavity 14, and the gas enters the first cavity 11 through the second channel 13 and the first gas outlet 101B, and then the gas provided by the gas supply component (not shown in the figure) is buffered by the second cavity 14, thereby reducing the flow rate of the gas when entering the first cavity 11, thereby reducing the risk of turbulent flow of the gas in the first cavity 11 and the first channel 12.

[0099] According to some embodiments of the present application, referring to Figure 2 , Figure 3 and Figure 4 The second cavity 14 is an annular cavity extending along the outer periphery of the first channel 12 , and the extension directions of the plurality of second channels 13 are all parallel to the first direction X.

[0100] Exemplarily, the first channel 12 is located within the range defined by the second cavity 14. Optionally, the geometric center of the cross section of the first channel 12 overlaps with the geometric center of the range defined by the second cavity 14.

[0101] In the above scheme, the second cavity 14 is an annular cavity extending along the periphery of the first channel 12, and the extension directions of the plurality of second channels 13 are parallel to the first direction X, so that the gas provided by the gas supply component (not shown in the figure) can be more evenly distributed around the periphery of the first channel 12 after entering the second cavity 14, and enter the first cavity 11 through the plurality of second channels 13 along the first direction X. The gas in the second cavity 14 can enter the first cavity 11 more evenly, thereby reducing the risk of turbulence in the flow direction of the gas in the first cavity 11 and the first channel 12 due to vortex generated when the gas enters the first cavity 11.

[0102] According to some embodiments of the present application, referring to Figure 2 , Figure 3 and Figure 4 , and please refer to Figure 5 , Figure 5 for Figure 2The first shell 10 has a second side 102A located in the second cavity 14 and away from the first cavity 11 along the first direction X. The second side 102A is provided with a plurality of second gas outlets 102B, and the plurality of second gas outlets 102B are arranged at intervals along the periphery of the first channel 12. The first shell 10 is provided with a third cavity 16, a first air inlet 17 and a plurality of third channels 15. The first cavity 11, the second cavity 14 and the third cavity 16 are arranged at intervals along the first direction X. The plurality of third channels 15 are respectively connected to the third cavity 16 and the plurality of second gas outlets 102B, and the gas supply component (not shown in the figure) is used to provide gas to the third cavity 16 through the first air inlet 17.

[0103] The second side 102A is a surface of the first housing 10 located in the second cavity 14 and away from the first cavity 11. Optionally, the second side 102A may be a plane perpendicular to the first direction X.

[0104] Reference Figure 3 The second gas outlet 102B may be arranged in a circle at intervals along the outer periphery of the first channel 12, or may be arranged in multiple circles at intervals along the outer periphery of the first channel 12. Thus, the gas provided by the gas supply component (not shown in the figure) to the second cavity 14 can enter the second cavity 14 uniformly, so that the pressure of different areas of the second cavity 14 is uniformly increased, and the gas flow disorder caused by the pressure difference in some areas of the second cavity 14 is reduced.

[0105] The third cavity 16 is disposed in the first housing 10 and is located on a side of the second cavity 14 away from the first cavity 11 .

[0106] For example, the second cavity 14 may be a cavity located at one side of the first channel 12 , or may be an annular cavity designed around the outer circumference of the first channel 12 .

[0107] The third channel 15 is a channel in the first housing 10 connecting the second air outlet 102B and the third cavity 16 .

[0108] In some embodiments, the third cavity 16 is an annular cavity extending along the periphery of the first channel 12 , and the extension directions of the plurality of third channels 15 are all parallel to the first direction X. The geometric center of the cross section of the first channel 12 overlaps with the geometric center of the range defined by the third cavity 16 .

[0109] It can be understood that the gas provided by the gas supply component (not shown in the figure) enters the first cavity 11 through the buffer of the third cavity 16, the third channel 15, the second cavity 14 and the second channel 13 in sequence, thereby reducing the flow rate of the gas entering the first cavity 11, which is beneficial to reducing the risk of gas flow turbulence.

[0110] The first air inlet 17 is an opening formed on the first shell 10 and connected to the third cavity 16 .

[0111] In some embodiments, the third cavity 16 and the third channel 15 may be multiple and spaced apart in the first shell 10 along the first direction X, adjacent third cavities 16 are connected by the third channels 15, and the first air inlet 17 is connected to the third cavity 16 farthest from the first cavity 11 in the first direction X.

[0112] In the above scheme, the gas supply component (not shown in the figure) is used to provide gas to the third cavity 16, and the gas enters the second cavity 14 through the third channel 15 and the second gas outlet 102B, and then the gas provided by the gas supply component (not shown in the figure) is buffered by the third cavity 16, thereby reducing the flow rate of the gas entering the second cavity 14, thereby reducing the flow rate of the gas when entering the first cavity 11, and thereby reducing the risk of turbulent flow of the gas in the first cavity 11 and the first channel 12.

[0113] According to some embodiments of the present application, referring to Figure 2 and Figure 3 The first air inlets 17 are multiple and spaced apart from each other along the outer circumference of the first shell 10 .

[0114] In the above scheme, a plurality of first air inlets 17 are arranged at intervals along the outer periphery of the first shell 10, so that the gas provided to the third cavity 16 by the air supply component (not shown in the figure) can enter the third cavity 16 relatively evenly, thereby reducing the risk of turbulent flow of gas in the third cavity 16, the second cavity 14, the first cavity 11 and the first channel 12.

[0115] According to some embodiments of this application, please refer to Figure 6 and Figure 7 , Figure 6 This is a schematic diagram of the structure of another dust removal mechanism 100 provided in some embodiments of the present application. Figure 7 for Figure 6 The dust removal mechanism 100 further includes a second housing 20. Along the first direction X, the first housing 10 has a third side 103A away from the lens 210, and the second housing 20 is disposed on the third side 103A. The second housing 20 has a fourth channel 21 connected to the first channel 12, and the fourth channel 21 is used for the laser 220 to pass through.

[0116] The third side 103A is a surface of the first housing 10 in the first direction X away from the first cavity 11 .

[0117] Exemplarily, the second shell 20 may be an annular structure, and the hollow portion in the middle of the second shell 20 forms the fourth channel 21. It can be understood that the edge of the cross section of the fourth channel 21 coincides with the edge of the cross section of the first channel 12, thereby reducing the risk of flow turbulence caused by touching the second shell 20 when the gas enters the fourth channel 21 from the first channel 12 along the N1 direction.

[0118] The second housing 20 may be detachably connected to the third side 103A by bolt connection, or may be non-detachably connected to the third side 103A by welding.

[0119] It can be understood that the fourth channel 21 can be regarded as an extension of the first channel 12. In the embodiment where the second shell 20 is detachably connected to the third side 103A by bolts, the second shell 20 with a fourth channel 21 of an adaptive length can be selected according to actual usage to suit different working conditions. This is beneficial to improving the ability of the dust removal mechanism 100 to adapt to working conditions.

[0120] In the above solution, the second housing 20 is provided, and the second housing 20 has a fourth channel 21 connected to the first channel 12, and the fourth channel 21 is used for passing the laser 220. Thus, the gas in the first cavity 11 is discharged from the first cavity 11 through the first channel 12 and the fourth channel 21 in sequence, thereby reducing the risk of debris and external dust generated during the cutting of the pole piece entering the first cavity 11 through the fourth channel 21 and the first channel 12 in sequence.

[0121] According to some embodiments of this application, please refer to Figure 6 and Figure 7 , and please refer to Figure 8 , Figure 8 for Figure 6 The enlarged view of the F part in FIG. The second housing 20 has a fourth side 20A and a fifth side 20B arranged opposite to each other along the second direction Y, and the second direction Y is perpendicular to the first direction X. The fourth side 20A is provided with a fifth channel 22 connected to the fourth channel 21. The fifth channel 22 extends to the fifth side 20B along the second direction Y, and the gas supply component (not shown in the figure) is also used to provide gas to the fifth channel 22.

[0122] The first direction X may be an extension direction of the laser 220 , and the second direction Y may be any direction perpendicular to the extension direction of the laser 220 .

[0123] The fourth side 20A and the fifth side 20B are two surfaces of the second housing 20 that are opposite to each other in the second direction Y.

[0124] The fifth channel 22 is a channel on the second housing 20 connecting the fourth side 20A and the fifth side 20B.

[0125] For example, the fifth channel 22 may be a through hole penetrating the second housing 20 along the second direction Y, or the second housing 20 may be recessed along the first direction X away from the first housing 10 on one side facing the first housing 10 to form a groove. The groove and part of the third side 103A enclose the fifth channel 22.

[0126] Reference Figure 7 , the gas provided by the gas supply component (not shown in the figure) to the fifth channel 22 moves along the second direction Y. Since the fifth channel 22 is connected to the fourth channel 21, the gas provided by the gas supply component (not shown in the figure) to the fifth channel 22 will pass through the connection between the fourth channel 21 and the fifth channel 22 along the second direction Y. Thus, the gas discharged from the first cavity 11 from the first channel 12 along the N1 direction moves along the second direction Y when passing through the connection between the fourth channel 21 and the fifth channel 22. At the same time, since the first cavity 11 is under positive pressure, the risk of the gas in the fifth channel 22 entering the first cavity 11 along the first channel 12 to drive dust into the first cavity 11 is reduced.

[0127] It can be understood that the gas in the fifth channel 22 can move along the N2 direction from the fourth side 20A to the fifth side 20B, or the gas in the fifth channel 22 can move along the opposite direction of the N2 direction from the fifth side 20B to the fourth side 20A. The N2 direction is parallel to the second direction Y.

[0128] In the above scheme, the fourth side 20A is provided with a fifth channel 22 extending to the fifth side 20B, and the fifth channel 22 is connected to the fourth channel 21. The gas supply component (not shown in the figure) is also used to provide gas to the fifth channel 22, so that the gas moves along the second direction Y in the fifth channel 22. On the one hand, when the debris and external dust generated during the cutting of the pole piece pass through the connection between the fourth channel 21 and the fifth channel 22 along the first direction X, it is restricted from continuing to move along the first direction X, thereby reducing the risk of the debris and external dust generated during the cutting of the pole piece entering the first cavity 11; on the other hand, when the gas in the first cavity 11 passes through the connection between the fourth channel 21 and the fifth channel 22, it drives the gas discharged from the first cavity 11 to move along the second direction Y, thereby reducing the risk of the pole piece shaking due to the gas discharged from the first cavity 11 touching the pole piece, thereby reducing the risk of the pole piece cutting quality decreasing.

[0129] According to some embodiments of this application, please refer to Figure 6 and Figure 7 , and please refer to Figure 8 The fifth channels 22 are multiple and spaced apart along the first direction X.

[0130] In the above scheme, the fifth channels 22 are multiple and spaced along the first direction X. On the one hand, when the debris and external dust generated during the cutting of the pole piece enter the fourth channel 21 along the first direction X, they will pass through the connection between the fourth channel 21 and the fifth channel 22 for many times, thereby further reducing the risk of the debris and external dust generated during the cutting of the pole piece entering the first cavity 11; on the other hand, when the gas discharged from the first cavity 11 moves along the fourth channel 21, it will pass through the connection between the fourth channel 21 and the fifth channel 22 for many times, thereby further reducing the risk of the gas discharged from the first cavity 11 touching the pole piece, causing the pole piece to shake, thereby reducing the quality of the pole piece cutting.

[0131] According to some embodiments of this application, please refer to Figure 6 and Figure 7 , and please refer to Figure 8 Along the third direction Z, the opposite sides of the fifth channel 22 respectively exceed the opposite sides of the fourth channel 21, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0132] The first direction X may be an extension direction of the laser 220 , and the second direction Y and the third direction Z may be any direction perpendicular to the extension direction of the laser 220 , wherein the second direction Y is perpendicular to the third direction Z.

[0133] Exemplarily, the dimension of the fifth channel 22 in the third direction Z is greater than the dimension of the fourth channel 21 in the third direction Z, and opposite sides of the fifth channel 22 in the third direction Z respectively exceed opposite sides of the fourth channel 21 in the third direction Z. Optionally, the midpoint of the dimension of the fifth channel 22 in the third direction Z coincides with the midpoint of the fourth channel 21 in the third direction Z.

[0134] In the above scheme, the relative sides of the fifth channel 22 in the third direction Z respectively exceed the relative sides of the fourth channel 21 in the third direction Z, so that the gas moving along the second direction Y in the fifth channel 22 can cover the fourth channel 21, thereby further reducing the risk of debris and external dust generated during the cutting of the pole piece entering the first cavity 11, and further reducing the risk of the gas discharged from the first cavity 11 touching the pole piece, causing the pole piece to shake, thereby reducing the quality of the pole piece cutting.

[0135] According to some embodiments of this application, please refer to Figure 6 and Figure 7 , and please refer to Figure 8 The cross section of the fourth channel 21 is rectangular, and the width direction of the cross section of the fourth channel 21 is parallel to the second direction Y.

[0136] In the embodiment in which the cross section of the fourth channel 21 is a rectangle, the cross section of the first channel 12 may also be a rectangle corresponding to the cross section of the fourth channel 21 .

[0137] In the above solution, the cross section of the fourth channel 21 is rectangular, and the width direction of the cross section of the fourth channel 21 is parallel to the second direction Y. Thus, the size of the fourth channel 21 in the second direction Y is reduced, and then the size of the connection between the fourth channel 21 and the fifth channel 22 in the second direction Y is reduced. As a result, when the gas moving along the second direction Y in the fifth channel 22 passes through the connection between the fourth channel 21 and the fifth channel 22, the distance moved in the fourth channel 21 is shorter. Thus, the risk of gas flow disorder in the fifth channel 22 is reduced.

[0138] According to some embodiments of this application, please refer to Figure 6 and Figure 7 , and please refer to Figure 8 The fifth channel 22 includes a first segment 22A disposed on the fourth side 20A and a second segment 22B disposed on the fifth side 20B. On a plane perpendicular to the second direction Y, the orthographic projection of the first segment 22A is located within the orthographic projection of the second segment 22B.

[0139] The first section 22A is a portion of the fifth channel 22 connecting the fourth side 20A and the fourth channel 21 ; the second section 22B is a portion of the fifth channel 22 connecting the fifth side 20B and the fourth channel 21 .

[0140] “On a plane perpendicular to the second direction Y, the orthographic projection of the first segment 22A is located within the orthographic projection of the second segment 22B” can be understood as that the projection of the first segment 22A along the N2 direction is located within the cross section of the second segment 22B.

[0141] In some embodiments, the side of the second segment 22B away from the first cavity 11 in the first direction X exceeds the side of the first segment 22A away from the first cavity 11 in the first direction X. In an embodiment where the fifth channel 22 is arranged in a plurality of intervals along the first direction X, the portions of the second segments 22B away from the first cavity 11 in the first direction X are recessed in a direction away from the first cavity 11, so that adjacent second segments 22B are connected along the first direction X. Thus, the gas discharged from the first segment 22A in the N2 direction can still be received by the second segment 22B after being deflected in the N1 direction by the gas discharged from the first channel 12 into the fourth channel 21 in the N1 direction, thereby reducing the risk of the gas discharged from the first segment 22A in the N2 direction being deflected in the N1 direction by the gas discharged from the first channel 12 into the fourth channel 21 in the N1 direction and touching the wall of the fourth channel 21, causing the gas flow direction to be disturbed.

[0142] In the above scheme, on the plane perpendicular to the second direction Y, the orthographic projection of the first segment 22A is located within the orthographic projection of the second segment 22B, thereby reducing the risk of the gas in the first segment 22A colliding with the side wall of the fourth channel 21 away from the first segment 22A in the second direction Y after passing through the fourth channel 21, thereby causing gas flow turbulence.

[0143] According to some embodiments of this application, please refer to Figure 6 and Figure 7 The dust removal mechanism 100 further includes a third housing 30, which is disposed on the fourth side 20A and is surrounded by a portion of the fourth side 20A to form a fourth cavity 31. The fourth cavity 31 is connected to the first section 22A, and the third housing 30 is provided with a second air inlet 32. The air supply component (not shown in the figure) is also used to provide gas to the fourth cavity 31 through the second air inlet 32.

[0144] The third shell 30 is a component of the dust removal mechanism 100 for forming a fourth cavity 31 together with the fourth side 20A. It can be understood that the third shell 30 can also be arranged on the fifth side 20B and form the fourth cavity 31 together with part of the fifth side 20B.

[0145] Exemplarily, the third shell 30 is a hollow structure with an open end, the fourth side 20A covers the open side to form a fourth cavity 31 , and the portion where the fourth side 20A is connected to the fifth channel 22 is located in the fourth cavity 31 .

[0146] In some embodiments, two second air inlets 32 are respectively disposed on two opposite side walls of the fourth cavity 31 in the third direction Z. Thus, the gas provided by the gas supply component (not shown) can enter the fourth cavity 31 more evenly.

[0147] In the above scheme, the gas supply component (not shown in the figure) is used to provide gas to the fourth cavity 31, and the gas is discharged from the fourth cavity 31 through the fifth channel 22, and then the gas provided by the gas supply component (not shown in the figure) is buffered by the fourth cavity 31, thereby reducing the flow rate of the gas when entering the fifth channel 22, thereby reducing the risk of gas flow turbulence in the fifth channel 22.

[0148] According to some embodiments of this application, please refer to Figure 6 and Figure 7 , and please refer to Fig. 9 , Fig.10 and Fig.11 , Fig. 9 for Figure 7 The enlarged view of the G part. Fig.10 An exploded view of the first shell 10 provided in some embodiments of the present application. Fig.11An exploded view of a first body 10A and a laser cutting mechanism 200 provided for some embodiments of the present application. The first housing 10 includes a first body 10A and a second body 10B. The first body 10A is annular, and the axis of the first body 10A is parallel to the first direction X. Along the first direction X, the first body 10A has a sixth side 10d and a seventh side 10c arranged in sequence, and the sixth side 10d is used to cover the non-lens 210 area of ​​the laser cutting mechanism 200. The second body 10B, the first side 101A is arranged on the second body 10B, and the second body 10B is connected to the seventh side 10c to form a first cavity 11 with the inner wall of the lens 210 and the first body 10A.

[0149] The first body 10A and the second body 10B are two components of the first housing 10 .

[0150] Exemplarily, the first body 10A and the second body 10B may be detachably connected by a lock 40 or a bolt, and the first body 10A is ring-shaped.

[0151] The seventh side 10 c is a surface of the first body 10A facing the second body 10B along the first direction X.

[0152] Reference Fig. 9 and Fig.10 In an embodiment in which the first body 10A and the second body 10B are detachably connected by a lock 40 or a bolt, the first body 10A may include a first base 10b and a first protrusion 10a, the seventh side 10c is located on the first base 10b, and the first protrusion 10a protrudes from the seventh side 10c. For example, the cross section of the first base 10b and the cross section of the first protrusion 10a are both annular, and the outer diameter of the cross section of the first base 10b is greater than the outer diameter of the cross section of the first protrusion 10a. The second body 10B is recessed along the first direction X facing the side of the first body 10A away from the first body 10A to form a first recess 101C corresponding to the first protrusion 10a, and the peripheral wall of the first recess 101C is sleeved outside the first protrusion 10a to limit the movement of the first body 10A and the second body 10B in a direction perpendicular to the first direction X. This facilitates the installation of the bolts of the first body 10A and the second body 10B, or the locking of the lock 40.

[0153] Reference Fig. 9 and Fig.10In the embodiment where the first housing 10 has the second cavity 14 and the third cavity 16, the second body 10B may include a first buffer 101, a second buffer 102 and a cover plate 103 arranged in sequence along the first direction X. The first side 101A is provided on the first buffer 101, and the first buffer 101 has a second convex portion 101D and a first annular convex portion 101E protruding from the side of the first buffer 101 away from the first side 101A along the first direction X, wherein the first annular convex portion 101E is arranged around the outer periphery of the second convex portion 101D to form a first annular groove 101F. A portion of the first channel 12 passes through the first convex portion 10a along the first direction X. The second channel (not shown in the figure) is connected to the bottom of the first annular groove 101F.

[0154] The second side (not shown in the figure) is provided on the second buffer 102, and the second buffer 102 covers the first annular groove 101F so that the second side (not shown in the figure) and the first annular groove 101F are surrounded to form a second cavity (not shown in the figure). The second buffer 102 has a third convex portion 102C and a second annular convex portion 102D protruding from the side of the second buffer 102 away from the second side (not shown in the figure) along the first direction X, wherein the second annular convex portion 102D is arranged around the outer periphery of the third convex portion 102C to form a second annular groove 102E. The third channel (not shown in the figure) is connected to the bottom of the second annular groove 102E.

[0155] The third side 103A is disposed on the cover plate 103 , and the cover plate 103 is engaged with the second annular groove 102E to form a third cavity (not shown in the figure) with the second annular groove 102E. A portion of the first channel 12 passes through the cover plate 103 along the first direction X.

[0156] In some embodiments, along the first direction X, one end of the second protrusion 101D away from the first cavity 11 is flush with one end of the first annular protrusion 101E away from the first cavity 11, and a portion of the first channel 12 passes through the third protrusion 102C along the first direction X, that is, the first channel 12 passes through the second protrusion 101D, the third protrusion 102C and the cover plate 103 in sequence.

[0157] In other embodiments, along the first direction X, one end of the second protrusion 101D away from the first cavity 11 exceeds one end of the first annular protrusion 101E away from the first cavity 11, and a through hole is provided on the third protrusion 102C for the second protrusion 101D to pass through, and the second protrusion 101D passes through the through hole and abuts against the cover plate 103.

[0158] In some embodiments, the first body 10A is detachably connected to the laser cutting mechanism 200 via bolts.

[0159] In other embodiments, the first housing 10 further includes a connecting member 104 and a locking member 105. The locking member 105 is annular and is used to be sleeved on the outer periphery of the laser cutting mechanism 200. The connecting members 104 are multiple and are arranged at intervals around the outer periphery of the laser cutting mechanism 200. One end of each of the multiple connecting members 104 is connected to the locking member 105, and one end of each of the multiple connecting members 104 is connected to the first body 10A. Exemplarily, the connecting member 104 can be a pin or a screw. This facilitates the disassembly and installation of the first body 10A and the laser cutting mechanism 200.

[0160] In the above solution, the first housing 10 includes a first body 10A and a second body 10B, and the first body 10A is connected to the laser cutting mechanism 200. On the one hand, when the laser cutting mechanism 200 needs to be repaired, the first housing 10 is split, which is more conducive to the inspection and cleaning of the lens 210 by disassembling the first body 10A and the second body 10B. On the other hand, the split first housing 10 is easier to manufacture than the integrated first housing 10, so the manufacturing cost of the first housing 10 can also be reduced.

[0161] According to some embodiments of this application, please refer to Figure 7 and Fig. 9 The dust removal mechanism 100 further includes a seal, and along the first direction X, the seal is located between the laser cutting mechanism 200 and the sixth side 10d.

[0162] The seal is a component for preventing dust from penetrating from a gap between the laser cutting mechanism 200 and the sixth side 10 d.

[0163] Exemplarily, the sealing member may be a sealing ring or a sealant.

[0164] In the above solution, the dust removal mechanism 100 further includes a seal, and the seal is located between the non-lens 210 area of ​​the laser cutting mechanism 200 and the sixth side 10d along the first direction X. Therefore, when the first housing 10 is connected to the laser cutting mechanism 200, the sixth side 10d can cooperate with the non-lens 210 area of ​​the laser cutting mechanism 200 to press the seal to fill the gap between the sixth side 10d and the non-lens 210 area of ​​the laser cutting mechanism 200, thereby reducing the risk of dust entering the first cavity 11 through the gap to contaminate the lens 210.

[0165] According to some embodiments of this application, please refer to Figure 7 , along the first direction X, the first body 10A has an eighth side 10e and a seventh side 10c that are oppositely disposed. The eighth side 10e is recessed toward the seventh side 10c to form a countersink, and the sixth side 10d is disposed at the bottom of the countersink. The countersink is sleeved outside the laser cutting mechanism 200.

[0166] In the embodiment where the first housing 10 further includes a connecting member 104 and a locking member 105 , the connecting member 104 is connected to the eighth side 10 e .

[0167] In the above solution, the countersunk hole is sleeved outside the laser cutting mechanism 200. On the one hand, part of the first body 10A is located outside the peripheral side of the laser cutting mechanism 200, thereby reducing the risk of direct collision between external components and the laser cutting mechanism 200; on the other hand, the laser cutting mechanism 200 forms a structural limit on the first body 10A through the countersunk hole to limit the movement of the first body 10A relative to the laser cutting mechanism 200 in a direction perpendicular to the first direction X.

[0168] An embodiment of the present application provides a laser 220 die-cutting device including a laser cutting mechanism 200 and a dust removal mechanism 100 provided in any one of the above embodiments.

[0169] In the above scheme, since the laser 220 die-cutting device includes the dust removal mechanism 100 provided by any one of the above embodiments, the laser 220 die-cutting device also has the beneficial effects of any one of the above embodiments.

[0170] An embodiment of the present application provides a pole piece manufacturing device including the laser 220 die-cutting device provided in the above embodiment.

[0171] In the above scheme, since the pole piece manufacturing equipment includes the laser 220 die-cutting device provided in the above embodiment, and since the laser 220 die-cutting device includes the dust removal mechanism 100 provided in any one of the above embodiments, the pole piece manufacturing equipment also has the beneficial effects of any one of the above embodiments.

[0172] According to some embodiments of the present application, a dust removal mechanism 100 is provided. Figure 1-Figure 11 A dust removal mechanism 100 includes a first housing 10 and an air supply component (not shown).

[0173] The first direction X is the extension direction of the laser 220 , and the second direction Y and the third direction Z are any directions perpendicular to the extension direction of the laser 220 , wherein the second direction Y is perpendicular to the third direction Z.

[0174] The first housing 10 is used to be arranged outside the lens 210 of the laser cutting mechanism 200 to form a first cavity 11 with the lens 210. The first housing 10 has a first side 101A located in the first cavity 11 and facing the lens 210. The first side 101A is provided with a plurality of first air outlets 101B and a first channel 12 that penetrates the first housing 10 along a first direction X, and the first channel 12 is used for the laser 220 to pass through.

[0175] The plurality of first gas outlets 101B are arranged at intervals along the outer circumference of the first channel 12. The first direction X is parallel to the extending direction of the laser 220.

[0176] The first housing 10 is provided with a second cavity 14 , a plurality of second channels 13 , a third cavity 16 , a plurality of third channels 15 and a plurality of first air inlets 17 . The first cavity 11 , the second cavity 14 and the third cavity 16 are arranged along the first direction X at intervals.

[0177] The plurality of second channels 13 are respectively connected to the second cavity 14 and the plurality of first gas outlets 101B, and a gas supply component (not shown in the figure) is used to provide gas into the second cavity 14 .

[0178] The second cavity 14 is an annular cavity extending along the outer circumference of the first channel 12 , and the extension directions of the plurality of second channels 13 are all parallel to the first direction X.

[0179] The first housing 10 has a second side 102A located in the second cavity 14 and away from the first cavity 11 along the first direction X. The second side 102A is provided with a plurality of second air outlets 102B, which are arranged at intervals along the outer periphery of the first channel 12. The plurality of third channels 15 are respectively connected to the third cavity 16 and the plurality of second air outlets 102B.

[0180] There are a plurality of first air inlets 17 spaced apart along the outer circumference of the first shell 10 , and an air supply component (not shown in the figure) is used to provide gas to the third cavity 16 through the first air inlets 17 .

[0181] The dust removal mechanism 100 further includes a second housing 20 and a third housing 30. Along the first direction X, the first housing 10 has a third side 103A away from the lens 210, and the second housing 20 is disposed on the third side 103A. The second housing 20 has a fourth channel 21 connected to the first channel 12, and the fourth channel 21 is used for the laser 220 to pass through.

[0182] The second housing 20 has a fourth side 20A and a fifth side 20B that are oppositely disposed, and the second direction Y is perpendicular to the first direction X. The fourth side 20A is provided with a fifth channel 22 connected to the fourth channel 21. The fifth channel 22 extends along the second direction Y to the fifth side 20B, and a gas supply component (not shown in the figure) is also used to provide gas to the fifth channel 22.

[0183] Along the third direction Z, two opposite sides of the fifth channel 22 exceed two opposite sides of the fourth channel 21 respectively.

[0184] The cross section of the fourth channel 21 is rectangular, and the width direction of the cross section of the fourth channel 21 is parallel to the second direction Y.

[0185] The fifth channel 22 includes a first segment 22A disposed on the fourth side 20A and a second segment 22B disposed on the fifth side 20B. On a plane perpendicular to the second direction Y, the orthographic projection of the first segment 22A is located within the orthographic projection of the second segment 22B.

[0186] The fifth channels 22 are arranged in plurality along the first direction X at intervals. Parts of the second segments 22B on one side away from the first cavity 11 in the first direction X are recessed away from the first cavity 11 so that adjacent second segments 22B are connected along the first direction X.

[0187] In the above scheme, the gas supply component (not shown in the figure) is used to provide gas to the third cavity 16, and the gas enters the second cavity 14 through the third channel 15 and the second gas outlet 102B, and then the gas provided by the gas supply component (not shown in the figure) is buffered by the third cavity 16, reducing the flow rate of the gas entering the second cavity 14, thereby reducing the flow rate of the gas entering the first cavity 11, thereby reducing the risk of turbulence in the flow direction of the gas in the first cavity 11 and the first channel 12. At the same time, the air pressure in the first cavity 11 is increased, and the first channel 12 forms a positive pressure relative to the outside. As a result, the gas is discharged from the first cavity 11 through the first channel 12 along the N1 direction, thereby limiting the debris and external dust generated during the pole piece cutting from entering the first cavity 11 through the first channel 12 and adsorbing on the lens 210. As a result, the risk of the laser 220 beam quality being reduced due to dust contamination of the field lens, thereby affecting the pole piece cutting quality, thereby improving the production quality of the battery.

[0188] In addition, the gas supply component (not shown in the figure) is also used to provide gas to the fifth channel 22 so that the gas moves along the second direction Y in the fifth channel 22. On the one hand, when the debris and external dust generated during the cutting of the pole piece pass through the connection between the fourth channel 21 and the fifth channel 22 along the first direction X, they are restricted from continuing to move along the first direction X, thereby reducing the risk of the debris and external dust generated during the cutting of the pole piece entering the first cavity 11; on the other hand, when the gas in the first cavity 11 passes through the connection between the fourth channel 21 and the fifth channel 22, it drives the gas discharged from the first cavity 11 to move along the second direction Y, thereby reducing the risk of the gas discharged from the first cavity 11 touching the pole piece, causing the pole piece to shake, thereby reducing the quality of the pole piece cutting.

[0189] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0190] The above embodiments are only used to illustrate the technical solution of the present application and are not used to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A dust removal mechanism, characterized in that: include: A first shell, used to be arranged outside the lens of the laser cutting mechanism to form a first cavity with the lens, the first shell having a first side located in the first cavity and facing the lens, the first side being provided with a plurality of first air outlets and a first channel penetrating the first shell along a first direction, the first channel being used for laser to pass through, the plurality of first air outlets being arranged at intervals along the outer circumference of the first channel, and the first direction being parallel to the extension direction of the laser; A gas supply component is used to provide gas to the first cavity through the plurality of first gas outlets.

2. The dust removal mechanism according to claim 1, characterized in that: Along the direction away from the first cavity, the cross-sectional area of ​​the first channel gradually decreases.

3. The dust removal mechanism according to claim 1, characterized in that: A second cavity and a plurality of second channels are disposed inside the first shell. The first cavity and the second cavity are spaced apart along the first direction. The plurality of second channels respectively connect the second cavity and the plurality of first air outlets. The air supply component is used to provide gas into the second cavity.

4. The dust removal mechanism according to claim 3, characterized in that: The second cavity is an annular cavity extending along the outer circumference of the first channel, and the extension directions of the plurality of second channels are all parallel to the first direction.

5. The dust removal mechanism according to claim 3, characterized in that: The first shell has a second side located in the second cavity and away from the first cavity along the first direction, the second side is provided with a plurality of second air outlets, and the plurality of second air outlets are arranged at intervals along the periphery of the first channel; A third cavity, a first air inlet and a plurality of third channels are provided inside the first shell; the first cavity, the second cavity and the third cavity are spaced apart along the first direction; the plurality of third channels respectively connect the third cavity and the plurality of second air outlets; and the gas supply component is used to provide gas to the third cavity through the first air inlet.

6. The dust removal mechanism according to claim 5, characterized in that: The first air inlets are multiple and spaced apart from each other along the outer circumference of the first shell.

7. The dust removal mechanism according to claim 1, characterized in that: The dust removal mechanism also includes a second shell; Along the first direction, the first shell has a third side away from the lens, the second shell is arranged on the third side, and the second shell has a fourth channel connected to the first channel, and the fourth channel is used for laser to pass through.

8. The dust removal mechanism according to claim 7, characterized in that: The second housing has a fourth side and a fifth side that are oppositely disposed along a second direction, and the second direction is perpendicular to the first direction; The fourth side is provided with a fifth channel connected to the fourth channel, the fifth channel extends to the fifth side along the second direction, and the gas supply component is further used for providing gas to the fifth channel.

9. The dust removal mechanism according to claim 8, characterized in that: The fifth channels are multiple and spaced apart along the first direction.

10. The dust removal mechanism according to claim 8, characterized in that: Along the third direction, two opposite sides of the fifth channel respectively exceed two opposite sides of the fourth channel, and the first direction, the second direction and the third direction are perpendicular to each other.

11. The dust removal mechanism according to claim 8, characterized in that: The cross section of the fourth channel is rectangular, and the width direction of the cross section of the fourth channel is parallel to the second direction.

12. The dust removal mechanism according to claim 8, characterized in that: The fifth channel includes a first section arranged on the fourth side and a second section arranged on the fifth side, and on a plane perpendicular to the second direction, an orthographic projection of the first section is located within an orthographic projection of the second section.

13. The dust removal mechanism according to claim 12, characterized in that: The dust removal mechanism also includes a third shell, which is arranged on the fourth side and together with part of the fourth side forms a fourth cavity, the fourth cavity is connected to the first section, the third shell is provided with a second air inlet, and the air supply component is also used to provide gas to the fourth cavity through the second air inlet.

14. The dust removal mechanism according to claim 1, characterized in that: The first housing comprises: A first body, wherein the first body is annular, an axis of the first body is parallel to the first direction, and along the first direction, the first body has a sixth side and a seventh side which are sequentially arranged, and the sixth side is used to cover a non-lens area of ​​the laser cutting mechanism; The first side is arranged on the second body, and the second body is connected to the seventh side to form the first cavity together with the lens and the inner wall of the first body.

15. The dust removal mechanism according to claim 14, characterized in that: The dust removal mechanism further includes a sealing member, and along the first direction, the sealing member is located between the laser cutting mechanism and the sixth side.

16. The dust removal mechanism according to claim 14, characterized in that: Along the first direction, the first body has an eighth side and a seventh side that are oppositely disposed, the eighth side is recessed toward the seventh side to form a countersink, and the sixth side is disposed at the bottom of the countersink; The countersunk hole is sleeved outside the laser cutting mechanism.

17. A laser die-cutting device, characterized in that: It comprises a laser cutting mechanism and a dust removal mechanism as described in any one of claims 1 to 16.

18. A pole piece manufacturing device, characterized in that: Comprising the laser die-cutting device as described in claim 17.

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