Dust removal device and laser processing apparatus

Abstract

A dust removal device and a laser processing apparatus. The dust removal device comprises a dust removal hood (1), the dust removal hood (1) being used for covering the surface of an object to be dedusted, and defining a dust removal chamber (101) with the surface of said object. The dust removal hood (1) comprises: a first opening (41) used for coming into contact with the surface of said object; an air inlet (31) located on a first side of the dust removal chamber (101) and used for connecting to an air source; an air outlet (32) located on a second side of the dust removal chamber (101), the dust removal chamber (101) connecting the air inlet (31) to the air outlet (32); and an air outlet chamber (102) located on the side of the dust removal chamber (101) close to the air outlet (32) and connecting the air outlet (32) to the dust removal chamber (101), the air outlet chamber (102) being connected to part of the periphery of the first opening (41).

Description

Dust removal device and laser processing equipment

[0001] Cross-reference to related applications

[0002] The present disclosure incorporates by reference in its entirety the Chinese Patent Application No. 202410444173.6, filed on April 12, 2024, entitled “Dust removal device and laser processing equipment”. TECHNICAL FIELD

[0003] The present application relates to the technical field of laser equipment, and in particular to a dust removal device and a laser processing equipment. BACKGROUND

[0004] Dust removal refers to a process of separating and removing solid particles and liquid droplets from air through specific methods and equipment.

[0005] In the process of processing a target object (such as a battery), dust is generated. For example, in the process of processing a target object by using laser technology (such as laser welding, laser cleaning, etc.), dust is generated and adsorbed on the target object. It is necessary to efficiently remove the dust on the target object to avoid affecting the quality of the target object.

[0006] SUMMARY

[0007] The present application aims to at least solve one of the technical problems existing in the background art. To this end, one object of the present application is to provide a dust removal device and a laser processing equipment to improve the problem that the dust removal efficiency of the dust removal device on the dust on the object to be dusted is low and affects the quality of the object to be dusted.

[0008] Embodiments of the first aspect of the present application provide a dust removal device, comprising: a dust removal cover, the dust removal cover is used to cover the surface of the object to be dusted, and the dust removal cover and the surface of the object to be dusted form a dust removal chamber, the dust removal cover comprises: a first opening, used to contact the surface of the object to be dusted; an air inlet, located at a first side of the dust removal chamber, used to communicate with an air source; an air outlet, located at a second side of the dust removal chamber, the dust removal chamber communicates with the air inlet and the air outlet; and an air outlet chamber, located at a side of the dust removal chamber close to the air outlet, communicating the air outlet and the dust removal chamber, the air outlet chamber is connected to a part of the outer periphery of the first opening.

[0009] In the technical scheme of the embodiment of the present application, the airflow is transmitted from the air inlet to the dust removal chamber, carries away the dust of the object to be dusted at the first opening, and flows out from the air outlet, thereby realizing dust removal of the object to be dusted. The part of the air outlet chamber connected to the outer periphery of the first opening enables the airflow entering from the air inlet to be directly discharged from the air outlet chamber to the air outlet after carrying away the dust on the object to be dusted at the first opening, reduces the flow of the airflow carrying dust in the dust removal chamber, thereby improving the problem of airflow turbulence caused by the flow of the airflow carrying dust in the dust removal chamber, reducing the residual dust in the dust removal chamber, and improving the dust removal efficiency of the object to be dusted.

[0010] In some embodiments, the dust removal cover further has an air inlet chamber, and the air inlet chamber comprises: a slit air channel; and a buffer cavity, one side of the buffer cavity being in communication with the air inlet, and the other side of the buffer cavity being connected to the dust removal chamber through the slit air channel, and the cross section of the slit air channel perpendicular to the extension direction of the slit air channel being strip-shaped. The airflow blown out of the slit air channel is high-speed airflow, and the airflow is strip-shaped, so that the blowing range of the airflow blown into the dust removal chamber is large, and the airflow can blow to each part in the dust removal chamber, thereby efficiently flushing the surface of the object to be dusted at the second opening and carrying away the dust on the surface of the object to be dusted.

[0011] In some embodiments, the slit thickness of the slit air channel is 0.02mm-0.5mm. Within this range, the airflow blown out of the slit air channel is high-speed airflow, thereby improving the dust removal efficiency of the object to be dusted.

[0012] In some embodiments, the dust removal cover comprises a base and a cover plate arranged on the base, and the base and the cover plate cooperate to enclose the air inlet chamber. The air inlet chamber is formed by cooperation of the base and the cover plate, which is conducive to simplifying the process of preparing the air inlet chamber with a specific shape.

[0013] In some embodiments, the base comprises a first protruding part protruding towards the cover plate, and the cover plate comprises a second protruding part protruding towards the base, and the first protruding part and the second protruding part cooperate to form the slit air channel. The first protruding part and the second protruding part for forming the slit air channel are arranged on the base and the cover plate respectively, which is easy to control the slit thickness of the slit air channel and simplify the process of preparing the slit air channel.

[0014] In some embodiments, the dust removal device is used for dust removal during laser processing of the object to be dusted, the dust removal chamber penetrates through the dust removal cover, the first opening is located at one end of the dust removal chamber, the other end of the dust removal chamber has the second opening, and the second opening is at least partially opposite to the first opening along the first direction, so that the laser can irradiate from the second opening to the first opening to process the object to be dusted located at the first opening. In this way, the object to be dusted can be efficiently dusted while being processed by laser, the quality of the laser processing procedure is improved, and the quality of the object to be dusted is improved.

[0015] In some embodiments, the dust removal chamber penetrates the dust removal cover along a first direction. In this way, the first opening and the second opening of the dust removal chamber are all facing each other in the first direction, which is conducive to improving the efficiency of laser processing on the object to be removed.

[0016] In some embodiments, the air inlet and the air outlet are located on opposite sides of the dust removal chamber in a second direction, and the first direction is perpendicular to the second direction. In this way, the air inlet and the air outlet are located on opposite sides of the dust removal chamber, respectively, and the airflow is transmitted to the dust removal chamber from the air inlet located on one side of the dust removal chamber, carries away the dust of the object to be removed, and then flows out from the air outlet located on the other side of the dust removal chamber, reducing the flow of airflow carrying dust in the entire dust removal chamber, thereby reducing the residual dust in the dust removal chamber.

[0017] In some embodiments, the dust removal chamber includes a first part and a second part adjacent along the first direction, the first opening is located in the first part, and the second opening is located in the second part. The maximum cross-sectional area of the first part in the second direction is greater than the maximum cross-sectional area of the second part in the second direction. In this way, the airflow has a larger flow space in the first part, which can more effectively carry away the dust of the object to be removed at the first opening.

[0018] In some embodiments, at least part of the sidewall of the second part is parallel to the first direction, and at least part of the sidewall of the first part is inclined away from the center of the first part. That is, at least part of the sidewall of the second part is a vertical sidewall, which has a shape of a partial straight cylinder, and at least part of the sidewall of the first part is an inclined sidewall, which has a shape of a partial cone, which is conducive to forming a structure in which the cross-sectional area of the first part is greater than that of the second part, so that the airflow has a larger flow space in the first part.

[0019] In some embodiments, the sidewall of the dust removal chamber is arc-shaped. That is, at least part of the sidewall of the dust removal chamber is an arc-shaped sidewall, which can reduce the cleaning dead angle of the dust removal chamber, thereby improving the problem of dust accumulation in the cleaning dead angle carried by the airflow, and improving the dust removal efficiency of the dust removal cover.

[0020] In some embodiments, in the case where the dust removal cover includes a base and a cover plate, the base and the cover plate cooperate to enclose the dust removal chamber. In this way, it is easy to form a dust removal chamber with a specific shape, and the preparation process is simplified.

[0021] In some embodiments, in the case where the dust removal chamber includes a first part and a second part adjacent to each other, the second part is formed on the cover plate, and the first part is formed on the base. It is easy to form the second part and the first part on the cover plate and the base, respectively, so that the second part and the first part have different shapes.

[0022] In some embodiments, the air outlet chamber extends along a third direction, and a sidewall of the air outlet chamber is parallel to the third direction, the third direction being different from the first direction. That is, the transmission direction of the airflow in the air outlet chamber is the third direction, which is different from the first direction, so as to improve the problem that the airflow carrying dust flows too much in the dust removal chamber along the first direction, and further improve the problem that the dust carried in the airflow remains in the dust removal chamber.

[0023] In some embodiments, when the dust removal cover comprises a base and a cover plate, the base and the cover plate cooperate to enclose the air outlet chamber, the second opening is formed at the top of the cover plate, the first opening is formed at the bottom of the base, and the air outlet is arranged close to the top of the cover plate. In this way, the air outlet can draw the dust at the first opening away in a direction away from the first opening, and can better improve the problem of excessive accumulation of dust at the first opening.

[0024] In some embodiments, the dust removal device further comprises a pressing plate having a first through hole, the dust removal cover is fixed on the pressing plate, and the first opening of the dust removal chamber communicates with the first through hole. The pressing plate can provide support for the dust removal cover, and the object to be dusted is located on the side of the pressing plate away from the dust removal cover and opposite the first through hole, so that the first opening can expose the surface of the object to be dusted, and the airflow in the dust removal chamber can blow through the first opening to remove the dust on the surface of the object to be dusted exposed by the first opening.

[0025] Embodiments of the second aspect of the present application provide a laser processing device for laser processing of a battery, which comprises the dust removal device in the above embodiments, and the dust removal device is used to remove dust generated by laser processing. Since the dust removal device can improve the problem that the airflow carrying dust flows in the dust removal chamber, which causes the airflow to be turbulent and the dust to remain in the dust removal chamber, the dust removal efficiency of the object to be dusted is improved, and the battery can be efficiently dusted while the battery is laser processed by the laser processing device, so as to improve the quality of the battery.

[0026] In some embodiments, the laser processing device is configured to perform laser cleaning on the liquid injection port of the battery. The dust removal device can efficiently remove the dust generated when the liquid injection port of the battery is laser cleaned, thereby improving the cleaning efficiency of the liquid injection port of the battery.

[0027] The above description is only a summary of the technical solutions of the present application, in order to more clearly understand the technical means of the present application, the specific embodiments of the present application can be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0028] In the drawings, like reference numerals refer to same or similar components throughout the several views. The drawings are not necessarily to scale. It should be understood that the drawings are merely schematic representations, which are illustrate some embodiments according to this disclosure and should not be interpreted in a limiting sense.

[0029] Fig. 1 is an exploded structural schematic diagram of a battery according to some embodiments of the present disclosure;

[0030] Fig. 2 is an exploded structural schematic diagram of a battery cell according to some embodiments of the present disclosure;

[0031] Fig. 3 is a sectional structural schematic diagram of a dust removal device according to some embodiments of the present disclosure;

[0032] Fig. 4 is a sectional structural schematic diagram of a dust removal device according to some other embodiments of the present disclosure;

[0033] Fig. 5 is a sectional structural schematic diagram of a dust removal device according to some further embodiments of the present disclosure;

[0034] Fig. 6 is an enlarged structural schematic diagram of a slit air passage according to some embodiments of the present disclosure;

[0035] Fig. 7 is a perspective structural schematic diagram of a base according to some embodiments of the present disclosure;

[0036] Fig. 8 is a top structural schematic diagram of a base according to some embodiments of the present disclosure;

[0037] Fig. 9 is a sectional structural schematic diagram of a base according to some embodiments of the present disclosure;

[0038] Fig. 10 is a perspective structural schematic diagram of a cover plate according to some embodiments of the present disclosure;

[0039] Fig. 11 is a top structural schematic diagram of a cover plate according to some embodiments of the present disclosure;

[0040] Fig. 12 is a sectional structural schematic diagram of a cover plate according to some embodiments of the present disclosure;

[0041] Fig. 13 is a perspective structural schematic diagram of a dust removal device according to some embodiments of the present disclosure from one viewing angle;

[0042] Fig. 14 is a perspective structural schematic diagram of a dust removal device according to some embodiments of the present disclosure from another viewing angle;

[0043] Fig. 15 is a bottom structural schematic diagram of a dust removal device according to some embodiments of the present disclosure;

[0044] Fig. 16 is a sectional structural schematic diagram of a dust removal device according to some further embodiments of the present disclosure. DETAILED DESCRIPTION

[0045] The embodiments of the present application will be described in detail below with reference to the drawings. The following examples are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot be used to limit the protection scope of the present application.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application; the terms "comprising," "comprises" and "including" as used herein are synonymous with and meant to have the same meaning as the term "including"; the term "coupled" as used herein means the joining of two members together with one or more intervening members.

[0047] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0048] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to each other. The skilled person explicitly and implicitly understands that the embodiments described herein can be combined with other embodiments.

[0049] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0050] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0051] In the description of the embodiments of the present application, the orientations or positional relationships indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0052] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mount", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0053] In the process of processing the object, a large amount of dust is generated, which is adsorbed on the surface of the object, affecting the quality of the object. Therefore, it is necessary to carry out dust removal on the object.

[0054] In the related art, in order to carry out dust removal on the object to be removed, a dust removal cover is used, however, the flow direction of the air flow used to carry away the dust in the dust removal cover in the related art is disordered, the dust cannot be discharged from the dust removal cover in time, resulting in that a large amount of dust remains in the dust removal cover, and the battery cannot be efficiently removed.

[0055] Based on the above consideration, in order to solve the problem of low dust removal efficiency at the welding position, the embodiments of the present application provide a dust removal device, the dust removal chamber has a first opening for contacting the surface of the object to be removed. The part of the outlet chamber connected to the outer periphery of the first opening, so that after the air flow entering from the air inlet carries away the dust on the object to be removed at the first opening, it can be directly discharged from the outlet chamber to the air outlet, improve the problem of air flow disorder caused by the flow of air flow carrying dust in the dust removal chamber, improve the dust removal efficiency of the object to be removed.

[0056] The object to be removed in the embodiments of the present application can be a battery or other objects that need to be removed. The dust removal device disclosed in the embodiments of the present application can be used in the production of batteries, and the produced batteries can be used in electric devices such as vehicles, ships or aircraft. The power supply system of the electric device can be composed of the batteries produced by using the dust removal device disclosed in the embodiments of the present application.

[0057] The electric device can be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, an electric vehicle, an electric automobile, a ship, a spacecraft, and the like. Among them, the electric toy can include a fixed or mobile electric toy, such as a game console, an electric automobile toy, an electric ship toy, an electric aircraft toy, and the like; and the spacecraft can include an airplane, a rocket, a space shuttle, a spacecraft, and the like.

[0058] Next, taking the battery as an example of the object to be dedusted, the battery is described.

[0059] Please refer to FIG. 1, which is an exploded structural schematic diagram of a battery provided by some embodiments of the present application. The battery 100 includes a box body 10 and a battery monomer 20, and the battery monomer 20 is contained in the box body 10. Among them, the box body 10 is used to provide a containing space for the battery monomer 20, and the box body 10 can adopt various structures. In some embodiments, the box body 10 can include a first part 11 and a second part 12, the first part 11 and the second part 12 are mutually covered, and the first part 11 and the second part 12 jointly define a containing space for containing the battery monomer 20.

[0060] In the battery 100, the battery monomer 20 can be multiple. Each battery monomer 20 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery monomer 20 can be in the shape of a cylinder, a flat body, a cuboid, or other shapes, etc.

[0061] Please refer to FIG. 2, which is an exploded structural schematic diagram of a battery monomer provided by some embodiments of the present application. The battery monomer 20 refers to the smallest unit that constitutes a battery. As shown in FIG. 2, the battery monomer 20 includes an end cover 21, a shell 22, an electric core assembly 23, and other functional components.

[0062] The end cover 21 refers to a component that covers the opening of the shell 22 to isolate the internal environment of the battery monomer 20 from the external environment. The end cover 21 can be provided with functional components such as an electrode terminal 21a. The electrode terminal 21a can be used to electrically connect with the electric core assembly 23 for outputting or inputting the electric energy of the battery monomer 20.

[0063] In some embodiments, the end cover is also provided with a liquid injection port 21b and an explosion-proof valve. The liquid injection port 21b is used to inject electrolyte into the shell 22. The battery electrolyte is the carrier of ion transmission in the battery. The electrolyte plays a role in conducting ions between the positive and negative electrodes of the battery, which helps the battery to obtain the advantages of high voltage and high specific energy. After the injection of the electrolyte is completed, the liquid injection port 21b is sealed by a sealing nail, thereby ensuring the sealing of the inside of the battery monomer 20.

[0064] The material of the end cover 21 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0065] The shell 22 is a component for fitting the end cover 21 to form an internal environment of the battery cell 20, wherein the formed internal environment can be used to accommodate the electrode assembly 23, electrolyte and other components.

[0066] The electrode assembly 23 is a component in which electrochemical reactions occur in the battery cell 20. One or more electrode assemblies 23 can be contained in the shell 22. The electrode assembly 23 is mainly formed by winding or stacking positive and negative electrode sheets, and a separator is usually provided between the positive and negative electrode sheets. The positive and negative electrode sheets have portions with active materials constituting a main body of the electrode assembly, and portions without active materials of the positive and negative electrode sheets each constitute a tab 23a. The positive and negative tabs can be located together at one end of the main body or at two ends of the main body, respectively. In the charging and discharging process of the battery, the positive and negative active materials react with the electrolyte, and the tab 23a connects the electrode terminal to form a current loop.

[0067] Referring to FIG. 3 and FIG. 4, FIG. 3 is a cross-sectional structure diagram of a dust removal device according to some embodiments of the present application; and FIG. 4 is a cross-sectional structure diagram of a dust removal device according to some other embodiments of the present application.

[0068] The dust removal device provided by the embodiments of the present application comprises a dust removal cover 1, which is used to cover the surface of an object to be dusted and encloses a dust removal chamber 101 with the surface of the object to be dusted. The dust removal cover 1 further comprises a first opening 41, which is used to contact the surface of the object to be dusted; an air inlet 31, which is located at a first side of the dust removal chamber 101 and is used to communicate with an air source; and an air outlet 32, which is located at a second side of the dust removal chamber 101 and is used to communicate with the air inlet 31 and the air outlet 32. The dust removal cover 1 further comprises an air outlet chamber 102, which is located at a side of the dust removal chamber 101 close to the air outlet 32, communicates with the air outlet 32 and the dust removal chamber 101, and is connected to a part of the outer periphery of the first opening 41.

[0069] The first opening 41 contacts the surface of the object to be dusted to expose the object to be dusted.

[0070] The air flow enters the dust removal chamber 101 from the air inlet 31, carries away the dust on the surface of the object to be dusted exposed by the first opening 41 when flowing through the dust removal chamber 101, and is sent out from the air outlet 32 carrying the dust, thereby completing the dust removal.

[0071] The air source can be a device for providing air flow for dust removal. In some embodiments, the air source can provide high-pressure gas, which refers to gas with a pressure greater than normal pressure. The high-pressure gas can enhance the dust removal effect. In some other embodiments, the air source can also provide normal-pressure gas.

[0072] In some embodiments, the air inlet 31 and the air outlet 32 are arranged on the sidewall of the dust cover 1. As shown in FIG. 4, the dust removal device can include an air inlet pipe 51 connected to the air inlet 31 and an air source connected to the air inlet pipe 51. The air outlet 32 can be connected to an air extraction device to extract the airflow in the dust cover 1 through the air outlet, which can accelerate the delivery of the airflow to the air outlet. The air extraction device can include an air extraction pipe 52 connected to the air outlet 32 and an air extraction equipment connected to the air extraction pipe 52. The air extraction pipe 52 and the air outlet can be connected through a flange 53.

[0073] The air source and the air extraction equipment are any equipment with air supply and air extraction functions known to those skilled in the art.

[0074] After the airflow leaves the dust removal chamber 101, it is transmitted to the air outlet chamber 102 and finally flows out of the air outlet 32.

[0075] In some embodiments, the air outlet chamber 102 can include a third opening and a fourth opening opposite to each other. The third opening is arranged towards and connected to the dust removal chamber 101, and the fourth opening is arranged towards and connected to the air outlet 32.

[0076] The air outlet chamber 102 is connected to part of the outer periphery of the first opening 41, i.e., part of the outer periphery of the third opening of the air outlet chamber 102 is connected to part of the outer periphery of the first opening 41, and the remaining part of the outer periphery of the third opening is connected to the sidewall of the dust removal chamber 101. In other words, part of the sidewall of the air outlet chamber 102 is directly connected to part of the outer periphery of the first opening 41, and the third opening of the air outlet chamber 102 is arranged close to the first opening 41. In this way, the airflow near the first opening 41 will directly enter the dust removal chamber 101 through the third opening.

[0077] Since the object to be dusted is located at the first opening 41, the airflow near the first opening 41 carries a large amount of dust. Part of the sidewall of the air outlet chamber 102 is directly connected to part of the outer periphery of the first opening 41, so that the airflow near the first opening 41 carrying a large amount of dust can be directly discharged from the air outlet chamber 102, reducing the flow of the airflow carrying dust in the dust removal chamber 101, thereby improving the problem of airflow turbulence caused by the flow of the airflow carrying dust in the dust removal chamber 101, and further improving the dusting efficiency of the object to be dusted.

[0078] Referring to FIGS. 5 and 6, FIG. 5 is a cross-sectional structure schematic diagram of a dust removal device according to some embodiments of the present application, and FIG. 6 is an enlarged structure schematic diagram of a slit air channel according to some embodiments of the present application.

[0079] According to some embodiments of the present application, the dust cover 1 further comprises an air inlet chamber 103, which comprises a slit air channel 103a and a buffer chamber 103b. The buffer chamber 103b is in communication with the air inlet 31 on one side and connected to the dust removal chamber 101 through the slit air channel 103a on the other side. The cross section of the slit air channel 103a perpendicular to the extension direction thereof is strip-shaped.

[0080] Due to the fact that the flow rate of the air flow increases when passing through the narrow part, the air flow blown out of the slit air channel 103a is a high-speed air flow, which can wash the surface of the object to be dusted and carry away more dust.

[0081] The air flow is transmitted in the extension direction of the slit air channel 103a. The cross section of the slit air channel 103a perpendicular to the extension direction thereof is the cross section perpendicular to the transmission direction of the air flow in the slit air channel 103a. That is, the cross section perpendicular to the transmission direction of the air flow in the slit air channel 103a is strip-shaped, so that the air flow blown out of the slit air channel 103a is strip-shaped.

[0082] In some embodiments, the width dimension of the strip-shaped extension direction is not less than the width dimension of the first opening 41. In this way, the strip-shaped air flow blown out of the slit air channel 103a can sweep all the first openings 41, so that the air flow can cover the surface of the object to be dusted exposed by the first openings 41 and efficiently carry away the dust on the surface of the object to be dusted.

[0083] It can be understood that the extension direction of the strip-shaped herein refers to the direction perpendicular to the transmission direction of the air flow flowing into and out of the air inlet chamber 103, so that the coverage area of the air flow is larger, thereby being able to vertically clean each position of the dust cover 1.

[0084] In some embodiments, the slit air channel 103a is arranged towards the first opening 41, so that the high-speed air flow in the slit air channel 103a is transmitted towards the first opening 41, thereby enabling the high-speed air flow to closely wash the surface of the object to be dusted at the first opening 41 and more efficiently carry away the dust on the surface of the object to be dusted.

[0085] The side of the buffer chamber 103b facing the slit air channel 103a has a strip-shaped opening matching the strip-shaped slit air channel 103a, and the strip-shaped opening is connected to the slit air channel 103a, so that the flow passage of the air flow flowing out of the buffer chamber 103b to the slit air channel 103a and the flow passage of the air flow entering the slit air channel 103a have the same or similar size, thereby being able to improve the problem of poor air flow transmission due to sudden decrease of the air flow speed.

[0086] The height dimension of the strip-shaped opening is smaller than the height dimension of the buffer cavity 103b, so that the flow-through space of the air flow in the buffer cavity 103b is larger than the flow-through space when the air flow passes through the strip-shaped opening, and is larger than the flow-through space when the air flow passes through the slit air passage 103a. In other words, the strip-shaped opening is only an opening in the side wall of the buffer cavity 103b in a partial height direction, and the buffer cavity 103b can provide a larger flow-through space for the air flow entering from the air inlet 31, and store more air flow in advance for delivery to the slit air passage 103a.

[0087] In some embodiments, the air inlet chamber 103 further comprises a gas delivery air passage 103c, one end of the gas delivery air passage 103c is connected with the air inlet 31, and the other end of the gas delivery air passage 103c is connected with the buffer cavity 103b, for transmitting the air flow delivered by the air inlet 31 into the buffer cavity 103b.

[0088] In some embodiments, the cross-sectional shape of the gas delivery air passage 103c in the direction perpendicular to the extension direction of the gas delivery air passage 103c is circular, square, rectangular, pentagonal, or other polygonal shape, which is different from the strip shape. That is, by providing the buffer cavity 103b, the transmission shape of the air flow when flowing out of the gas delivery air passage 103c can be changed from circular, square, rectangular, pentagonal, or other polygonal shape to strip shape when flowing into the slit air passage 103a, so that the air flow can fill the slit air passage 103a and be better transmitted in the slit air passage 103a.

[0089] In some embodiments, the cross-sectional shape of the gas delivery air passage 103c in the direction perpendicular to the extension direction of the gas delivery air passage 103c is the same as the shape of the air inlet 31.

[0090] In some embodiments, the cross-sectional area of the gas delivery air passage 103c in the direction perpendicular to the extension direction of the gas delivery air passage 103c is the same as the area of the air inlet 31. In the extension direction of the strip shape formed by the slit air passage 103a, the width dimension of the gas delivery air passage 103c is smaller than the width dimension of the slit air passage 103a, that is, the sweeping width of the air flow entering from the air inlet 31 is small, and the buffer cavity 103b can increase the sweeping width of the air flow blown out of the slit air passage 103a.

[0091] By providing the buffer cavity 103b and the slit air passage 103a, the air flow blown out of the slit air passage 103a is a high-speed air flow, and the air flow is in a strip shape, so that the sweeping range of the air flow blown into the dust removal chamber 101 is large, and the air flow can blow to each part in the dust removal chamber 101, and the surface of the object to be dusted located at the first opening 41 can be washed in a large range, and the dust on the surface of the object to be dusted can be efficiently taken away.

[0092] Referring to FIG. 6, according to some embodiments of the present application, the slit thickness d of the slit air passage 103a is 0.02 millimeters (mm) to 0.5 mm.

[0093] The slit thickness d refers to the thickness dimension of the slit air passage 103a in the direction perpendicular to the transmission path of the airflow in the slit air passage 103a, i.e. the thickness dimension in the direction perpendicular to the extension direction of the strip-shaped slit air passage 103a.

[0094] In some embodiments, the slit thickness d of the slit air passage 103a can be 0.05mm-0.1mm, within which range, a high-speed airflow with a large flow rate can be blown out of the slit air passage 103a.

[0095] In other embodiments, the slit thickness d of the slit air passage 103a can also be 0.02mm-0.05mm, 0.05mm-0.1mm, 0.1mm-0.2mm or 0.2mm-0.5mm, within which range, the problem of insufficient airflow blown out of the slit air passage 103a due to too small slit thickness d can be improved, and the flow rate of the airflow is large.

[0096] Within the above range of the slit thickness d of the slit air passage 103a, the airflow blown out of the slit air passage 103a is a high-speed airflow, which improves the dust removal efficiency on the object to be dusted.

[0097] Referring to FIGS. 5-15, FIG. 7 is a perspective view of the base of some embodiments of the present application, FIG. 8 is a top view of the base of some embodiments of the present application, FIG. 9 is a sectional view of the base of some embodiments of the present application, FIG. 10 is a perspective view of the cover plate of some embodiments of the present application, FIG. 11 is a top view of the cover plate of some embodiments of the present application, FIG. 12 is a sectional view of the cover plate of some embodiments of the present application, FIG. 13 is a perspective view of the dust removal device of some embodiments of the present application from one viewing angle, FIG. 14 is a perspective view of the dust removal device of some embodiments of the present application from another viewing angle, and FIG. 15 is a bottom view of the dust removal device of some embodiments of the present application.

[0098] According to some embodiments of the present application, the dust cover 1 comprises a base 111 and a cover plate 112 arranged on the base 111, and the base 111 and the cover plate 112 cooperate to enclose the air inlet chamber 103.

[0099] Part of the side wall of the air inlet chamber 103 is formed on the base 111, and the remaining part of the side wall of the air inlet chamber 103 is formed on the cover plate 112, so that the cover plate 112 is arranged on the base 111, and the side walls formed in the base 111 and the cover plate 112 corresponding to different parts of the air inlet chamber 103 can be connected to each other and enclose the air inlet chamber 103 with a specific shape.

[0100] In some embodiments, the air inlet chamber 103 comprises a section of slit air passage 103a, which can be located in the cover plate 112, or in the base 111, or part of the slit air passage 103a is located in the cover plate 112 and the remaining part of the slit air passage 103a is located in the base 111.

[0101] In some embodiments, the air inlet chamber 103 comprises a buffer chamber 103b, which can be located in the cover plate 112, or in the base 111, or part of the buffer chamber 103b is located in the cover plate 112 and the remaining part of the buffer chamber 103b is located in the base 111.

[0102] In some embodiments, the air inlet chamber 103 can further comprise a gas feeding passage 103c, which can be located in the cover plate 112, or in the base 111, or part of the gas feeding passage 103c is located in the cover plate 112 and the remaining part of the gas feeding passage 103c is located in the base 111.

[0103] It can be understood that the base 111 and the cover plate 112 each have an assembly part and a connecting part for forming the air inlet chamber 103. The connecting part of the base 111 and the connecting part of the cover plate 112 are connected to each other, so that the cover plate 112 is arranged on the base 111.

[0104] In some embodiments, the connecting part of the base 111 has a first connecting surface, and the connecting part of the cover plate 112 has a second connecting surface, the first connecting surface and the second connecting surface are tightly fitted to each other, so that the dust removal cover 1 has good sealing performance in the part other than the first opening 41, the air inlet 31 and the air outlet 32.

[0105] In some embodiments, the cover plate 112 and the base 111 can be detachably connected, so that the cover plate 112 and the base 111 can be easily detached for maintenance of the dust removal cover 1.

[0106] In some embodiments, the cover plate 112 and the base 111 can be connected by bolt connection, buckle connection, pin connection or other detachable connection.

[0107] In other embodiments, the cover plate 112 and the base 111 can also be fixedly connected, for example, by welding or the like.

[0108] The air inlet chamber 103 is formed by the cooperation of the base 111 and the cover plate 112, and the part of the air inlet chamber 103 can be prepared on the base 111 and the cover plate 112 respectively, which is beneficial to simplify the process of preparing the air inlet chamber 103 with a specific shape.

[0109] Referring to FIGS. 6-12, according to some embodiments of the present application, the base 111 can include a first protruding portion 1031 protruding toward the cover plate 112; the cover plate 112 can include a second protruding portion 1032 protruding toward the base 111; wherein the first protruding portion 1031 cooperates with the second protruding portion 1032 to form a slit air passage 103a.

[0110] The surface of the first protruding portion 1031 facing the cover plate 112 is a first surface, the surface of the second protruding portion 1032 facing the base 111 is a second surface, the first surface is opposite to the second surface, and the gap between the first surface and the second surface constitutes the slit air passage 103a.

[0111] In some embodiments, the first surface and the second surface are parallel to each other, so that the slit thickness d of the slit air passage 103a formed thereby is the same at each location along the extension direction thereof.

[0112] In some embodiments, the first surface and the second surface can also be approximately parallel, i.e., a slight included angle can be formed between the extension surfaces of the first surface and the second surface, so that the slit thickness d of the slit air passage 103a formed thereby is slightly different at each location along the extension direction thereof, but the values of the slit thickness d at each location are relatively close. The slight included angle is configured not to affect the blowing of high-speed airflow by the slit air passage 103a, so that the process difficulty of preparing the slit air passage 103a can be reduced.

[0113] In some embodiments, the first protruding portion 1031 can be located within the base 111, and the second protruding portion 1032 can extend out of the cover plate 112 and into the base 111, so that the slit air passage 103a is formed within the base 111.

[0114] In some embodiments, the first opening 41 is formed at the bottom of the base 111 away from the cover plate 112, the second opening 42 is formed at the top of the cover plate 112 away from the base 111, and the slit air passage 103a is formed within the base 111, so that the high-speed airflow within the slit air passage 103a is transmitted toward the first opening 41, and the high-speed airflow can closely flush the surface of the object to be dedusted at the first opening 41.

[0115] In some embodiments, the slit air passage 103a is formed within the base 111, and both the first surface and the second surface extend toward the direction of the first opening 41, so that the slit air passage 103a is arranged toward the first opening 41.

[0116] In other embodiments, the second protruding portion 1032 can also be located within the cover plate 112, and the first protruding portion 1031 can extend out of the base 111 and into the cover plate 112, so that the slit air passage 103a is formed within the cover plate 112.

[0117] Referring to FIGS. 7-12, in some embodiments, the base 111 can further include a first recessed portion 1033 recessed in a direction away from the cover plate 112 relative to the first protruding portion 1031, and the cover plate 112 can further include a second recessed portion 1034 recessed in a direction away from the base 111 relative to the second protruding portion 1032, and the first recessed portion 1033 and the second recessed portion 1034 cooperate to form the buffer cavity 103b. The first recessed portion 1033 is adjacent to the first protruding portion 1031, and the second recessed portion 1034 is adjacent to the second protruding portion 1032, so that the buffer cavity 103b is in communication with the slit air passage 103a.

[0118] It can be found that, in the structure described above for forming the buffer cavity 103b and the slit air passage 103a, the buffer cavity 103b is formed by two recessed portions, and the slit air passage 103a is formed by two protruding portions, so that the flow-through space of the airflow in the buffer cavity 103b is greater than the flow-through space of the airflow in the slit air passage 103a.

[0119] In some embodiments, the surface of the second recessed portion 1034 facing the first recessed portion 1033 can be flush with the junction of the cover plate 112 and the base 111, and the first recessed portion 1033 can be located in the base 111, so that the buffer cavity 103b formed thereby is located in the base 111.

[0120] In other embodiments, the second recessed portion 1034 can also be located in the cover plate 112, and the surface of the first recessed portion 1033 facing the second recessed portion 1034 can be flush with the junction of the cover plate 112 and the base 111, so that the buffer cavity 103b formed thereby is located in the cover plate 112.

[0121] In yet other embodiments, the second recessed portion 1034 can be located in the cover plate 112, and the first recessed portion 1033 can also be located in the cover plate 112, so that the buffer cavity 103b formed thereby is located both in the cover plate 112 and in the base 111.

[0122] The junction of the cover plate 112 and the base 111 can be the junction of the first connecting surface and the second connecting surface that are in abutment with each other. The first connecting surface and the second connecting surface can be used as boundaries to distinguish between the inside and outside of the cover plate 112 or the base 111. If a structure in the base 111 is located between the plane where the first connecting surface is located and the plane where the bottom of the base 111 is located, it is considered that the structure is located in the base 111. Conversely, it is located outside the base 111. If a structure in the cover plate 112 is located between the plane where the second connecting surface is located and the plane where the top of the cover plate 112 is located, it is considered that the structure is located in the cover plate 112. Conversely, it is located outside the cover plate 112.

[0123] Based on the above description, it is not difficult to find that the first protruding part 1031 and the second protruding part 1032 for forming the slit air channel 103a are arranged on the base 111 and the cover plate 112 respectively, which is easy to control the slit thickness d of the slit air channel 103a and simplify the process of manufacturing the slit air channel 103a.

[0124] Moreover, the first recessed part 1033 and the second recessed part 1034 are formed on the base 111 and the cover plate 112 respectively, which can make the buffer cavity 103b and the slit air channel 103a communicate through simple shapes and is easy to process.

[0125] Referring to FIGS. 3-5, according to some embodiments of the present application, the dust removal device can be used for dust removal when a to-be-cleaned object is subjected to laser processing. The dust removal chamber 101 penetrates the dust removal cover 1. The first opening 41 is located at one end of the dust removal chamber 101. The other end of the dust removal chamber 101 has a second opening 42. The second opening 42 is at least partially opposite to the first opening 41 along the first direction X, so that the laser can irradiate to the first opening 41 through the second opening 42, and process the to-be-cleaned object located at the first opening 41.

[0126] Laser technology is widely used in manufacturing, such as laser welding, laser cleaning, laser cutting, etc. For example, in the manufacturing process of a battery, the battery is subjected to laser processing. Laser processing produces dust, which is adsorbed on the battery. The dust adsorbed on the battery during laser processing needs to be removed to avoid affecting the quality of the battery.

[0127] In some embodiments, the laser processing can include laser cleaning of the liquid injection port of the battery to achieve cleaning of the liquid injection port of the battery.

[0128] The liquid injection port of the battery is used to inject battery electrolyte into the battery. During the injection process, it is difficult to avoid the electrolyte remaining on the contact surface of the liquid injection port of the battery. Laser cleaning is a non-contact cleaning process that uses a high-energy laser beam to irradiate the surface to separate and evaporate stains and attachments. Through laser cleaning, the liquid injection port can be better cleaned.

[0129] However, whether it is laser cleaning or other laser processes, dust is inevitably generated, which is adsorbed on the surface of the battery and affects the quality of the battery.

[0130] The first opening 41 and the second opening 42 are two openings opposite to each other in the penetration direction of the dust removal chamber 101 in the dust removal cover 1. The first opening 41 and the second opening 42 at least partially face each other along the first direction X, so that after the laser irradiates to the first opening 41 along the first direction X, it can irradiate to the surface of the to-be-cleaned object corresponding to the facing part of the first opening 41 and the second opening 42, and then process the surface of the to-be-cleaned object.

[0131] In some embodiments, the first opening 41 and the second opening 42 are only partially opposite along the first direction X, i.e., the through direction of the dust removal chamber 101 is different from the first direction X.

[0132] In other embodiments, the first opening 41 and the second opening 42 are fully opposite along the first direction X, i.e., the through direction of the dust removal chamber 101 is the same as the first direction X.

[0133] In the above technical solutions, the object to be dusted is efficiently dusted while being subjected to laser processing, the quality of the laser processing process is improved, and the quality of the object to be dusted is improved.

[0134] Referring to FIGS. 3-5, according to some embodiments of the present application, the dust removal chamber 101 penetrates the dust removal cover 1 along the first direction X.

[0135] The first opening 41 and the second opening 42 are two openings opposite in the through direction of the dust removal chamber 101 in the dust removal cover 1, i.e., the first opening 41 and the second opening 42 are two openings opposite in the first direction X, and the first opening 41 and the second opening 42 are fully opposite in the first direction X.

[0136] The laser incident along the second opening 42 can fully irradiate the surface of the object to be dusted exposed by the first opening 41 along the first direction X.

[0137] In some embodiments, the first direction X can be the thickness direction of the dust removal cover 1. The second opening 42 can be provided on the top of the dust removal cover 1, and the first opening 41 can be provided on the bottom of the dust removal cover 1. The thickness direction of the dust removal cover 1 is the direction from the top of the dust removal cover 1 to the bottom of the dust removal cover 1.

[0138] In other embodiments, the dust removal cover 1 can also penetrate the dust removal cover 1 along a direction inclined to the first direction X, i.e., the through direction of the dust removal cover 1 has an included angle with the first direction X, so that the first opening 41 and the second opening 42 are partially opposite in the first direction X. The laser incident along the second opening 42 can irradiate the surface of the object to be dusted exposed by the first opening 41 opposite to the second opening 42 along the first direction X.

[0139] The dust removal chamber 101 is arranged to penetrate the dust removal cover 1 along the first direction X, so that the first opening 41 and the second opening 42 of the dust removal chamber 101 are fully opposite in the first direction X, which is beneficial to improve the efficiency of laser processing of the object to be dusted.

[0140] Continuing to refer to FIGS. 3-5, according to some embodiments of the present application, the air inlet 31 and the air outlet 32 are located on opposite sides of the dust removal chamber in the second direction Y, and the first direction X is perpendicular to the second direction Y.

[0141] That is, the relative direction of the first opening 41 and the second opening 42 is perpendicular to the relative direction of the air inlet 31 and the air outlet 32. That is, the relative direction of the air inlet 31 and the air outlet 32 is different from the extension direction of the dust removal chamber 101. In this way, the airflow enters the dust removal chamber 101, and after washing the surface of the object to be dusted at the first opening 41 and carrying away the dust, the airflow carrying the dust flows out from the side of the second direction Y of the dust removal chamber 101. Since the second direction Y is different from the extension direction of the dust removal chamber 101, the flow of the airflow in the extension direction of the dust removal chamber 101 is reduced.

[0142] It can be understood that in other embodiments, the first direction X can also be approximately perpendicular to the second direction Y, that is, the included angle between the first direction X and the second direction Y is approximately 90 degrees (°), for example, it can be slightly greater than 90°, or slightly less than 90°.

[0143] In yet other embodiments, the first direction X and the second direction Y can also not be perpendicular, as long as the first direction X and the second direction Y intersect.

[0144] The first direction X and the second direction Y are set to be perpendicular, so that the air inlet 31 and the air outlet 32 are located on opposite sides of the dust removal chamber 101, the airflow is transmitted from the air inlet 31 located on one side of the dust removal chamber to the dust removal chamber 101, carrying away the dust of the object to be dusted, and then crossing the dust removal chamber 101, flowing out from the air outlet 32 located on the other side of the dust removal chamber, reducing the flow of the airflow carrying dust in the entire dust removal chamber 101, and further reducing the residual dust in the dust removal chamber 101.

[0145] Referring to FIG. 5, according to some embodiments of the present application, the dust removal chamber 101 includes a first part 101a and a second part 101b adjacent along the first direction X, the first opening 41 is located in the first part 101a, and the second opening 42 is located in the second part 101b. The maximum cross-sectional area of the first part 101a along the second direction Y is greater than the maximum cross-sectional area of the second part 101b along the second direction Y.

[0146] Since the dust removal chamber 101 penetrates through the dust removal cover 1, i.e., the dust removal chamber 101 is a hollow cavity with both ends open, after the airflow enters the dust removal chamber 101 from the air inlet 31, the airflow will flow up and down along the penetration direction of the dust removal chamber 101. For example, if the airflow enters from the second part 101b of the dust removal chamber 101, part of the airflow in the second part 101b will flow to the first part 101a, and then the airflow flowing to the first part 101a and the airflow in the second part 101b will flow into the air outlet chamber 102. If the airflow enters from the first part 101a of the dust removal chamber 101, part of the airflow in the first part 101a will flow to the second part 101b, and then the airflow flowing to the second part 101b and the airflow in the first part 101a will flow into the air outlet chamber 102.

[0147] The maximum cross-sectional area of the first part 101a in the second direction Y is greater than the maximum cross-sectional area of the second part 101b in the second direction Y, so that the airflow has a larger flow space in the first part 101a.

[0148] In some embodiments, in the direction of the first part 101a pointing to the second part 101b, the cross-sectional area of the second part 101b in the second direction Y can be constant, i.e., at any position in the direction of the first part 101a pointing to the second part 101b, the cross-sectional area of the second part 101b in the second direction Y can be taken as the maximum cross-sectional area. In this way, the second part 101b has a straight cylinder shape.

[0149] In other embodiments, the maximum cross-sectional area of the second part 101b in the second direction Y can be the cross-sectional area at the position where the first part 101a is connected. That is, in the direction of the second part 101b pointing to the first part 101a, the maximum cross-sectional area of the second part 101b in the second direction Y can gradually increase, showing a conical shape.

[0150] In some embodiments, in the direction of the second part 101b pointing to the first part 101a, the cross-sectional area of the first part 101a in the second direction Y gradually increases or increases in a stepped manner. The maximum cross-sectional area of the first part 101a in the second direction Y is the cross-sectional area of the first opening 41. That is, the cross-sectional area of the first opening 41 is greater than the cross-sectional area of the second opening 42, so that the first opening 41 can expose a larger area of the object to be dusted, thereby performing more efficient laser processing and dust removal on the object to be dusted.

[0151] In other embodiments, in the direction of the second part 101b pointing to the first part 101a, the cross-sectional area of the first part 101a in the second direction Y can also show a change trend of first increasing and then decreasing.

[0152] It can be understood that, in the embodiments of the present application, the first part 101a and the second part 101b can have other irregular shapes in addition to the shapes described in the above embodiments, as long as the maximum cross-sectional area of the first part 101a in the second direction Y is greater than the maximum cross-sectional area of the second part 101b in the second direction Y. The second direction Y can be perpendicular to the first direction X, and the dust removal chamber 101 extends through the dust removal cover 1 along the first direction X.

[0153] The maximum cross-sectional area of the first part 101a in the second direction Y is greater than the maximum cross-sectional area of the second part 101b in the second direction Y, so that the airflow has a larger flow space in the first part 101a, and can more effectively carry away the dust of the object to be removed at the first opening 41.

[0154] According to some embodiments of the present application, at least part of the side wall of the second part 101b is parallel to the first direction X, and at least part of the side wall of the first part 101a is inclined away from the center of the first part 101a.

[0155] The area surrounded by at least part of the side wall of the second part 101b parallel to the first direction X has the shape of a straight cylinder cavity extending at least partially in the first direction X.

[0156] In some embodiments, all the side walls of the second part 101b are parallel to the first direction X, so that the shape of the second part 101b is a straight cylinder cavity.

[0157] In other embodiments, part of the side wall of the second part 101b is parallel to the first direction X, so that part of the second part 101b has the shape of a straight cylinder cavity. The remaining part of the side wall of the second part 101b can be inclined away from the center of the second part 101b compared to the first direction X, so that the shape surrounded by the remaining part of the side wall of the second part 101b has the shape of an at least partially conical cavity or other shaped cavity.

[0158] The first part 101a can include a first end close to the second part 101b and a second end away from the second part 101b, and the first opening 41 is located at the second end. At least part of the second end is inclined away from the center of the first part 101a compared to the first end, so that at least part of the side wall is inclined away from the center of the first part 101a compared to the first direction X. That is, at least part of the first part 101a has the shape of an at least partially conical cavity.

[0159] In some embodiments, all the side walls of the first part 101a are inclined away from the center of the first part 101a, that is, the first part 101a has the shape of a conical cavity, so that the cross-sectional area of the second end is greater than that of the first end, and thus the opening size of the first opening 41 is larger.

[0160] In some embodiments, the first portion 101a can be a first hollow cavity extending through the base 111, and the second portion 101b can be a second hollow cavity extending through the cover 112. The first hollow cavity and the second hollow cavity can be opposite to and in communication with each other. The first opening 41 can be an opening of the first hollow cavity away from the second hollow cavity, and the second opening 42 can be an opening of the second hollow cavity away from the first hollow cavity.

[0161] Referring to FIGS. 5-15, according to some embodiments of the present application, in the case that the dust cover 1 comprises a base 111 and a cover 112, the base 111 cooperates with the cover 112 to form the dust removal chamber 101.

[0162] The base 111 and the cover 112 respectively have accommodation spaces for forming different portions of the dust removal chamber 101. After the cover 112 is placed on the base 111, the cover 112 is in communication with the accommodation spaces in the base 111 and the cover 112 for forming different portions of the dust removal chamber 101, and forms the dust removal chamber 101. Among them, part of the dust removal chamber 101 is formed in the base 111, and the remaining part of the dust removal chamber 101 is formed in the cover 112.

[0163] In some embodiments, the second opening 42 is formed on the top of the cover 112, and the first opening 41 is formed on the bottom of the base 111. The second opening 42 and the first opening 41 at least partially face each other along the first direction X, which can be the direction in which the cover 112 points to the base 111, that is, the thickness direction of the dust cover 1.

[0164] The connection mode between the cover 112 and the base 111 can be described with reference to the above description of the cover 112 and the base 111, and will not be described here.

[0165] Through the cooperation of the base 111 and the cover 112, it is easy to form a dust removal chamber 101 with a specific shape, and simplify the preparation process.

[0166] Continuing to refer to FIGS. 5-15, according to some embodiments of the present application, in the case that the dust removal chamber 101 comprises an abutting first portion 101a and a second portion 101b, the second portion 101b can be formed in the cover 112, and the first portion 101a can be formed in the base 111.

[0167] The first portion 101a can be a first hollow cavity extending through the base 111, and the second portion 101b can be a second hollow cavity extending through the cover 112. The first hollow cavity and the second hollow cavity can be opposite to and in communication with each other. The first opening 41 can be an opening of the first hollow cavity away from the second hollow cavity, and the second opening 42 can be an opening of the second hollow cavity away from the first hollow cavity.

[0168] The outer periphery of the openings of the first hollow cavity and the second hollow cavity in the direction of approaching each other can be partially connected, so that the connection of the dust removal chamber 101 formed after the first hollow cavity and the second hollow cavity are communicated is a smooth connection, reducing the accumulation of dust carried in the airflow at this place.

[0169] In some embodiments, the air inlet chamber 103 can be communicated with the side of the first hollow cavity facing the air inlet chamber 103.

[0170] In other embodiments, the air inlet chamber 103 can also be communicated with the side of the second hollow cavity facing the air inlet chamber 103.

[0171] In yet other embodiments, the air inlet chamber 103 can also be communicated with the side of the first hollow cavity facing the air inlet chamber 103 and the side of the second hollow cavity facing the air inlet chamber 103.

[0172] In some embodiments, the base 111 and the cover plate 112 cooperate to enclose the air outlet chamber 102, so that the air outlet chamber 102 can be communicated with the side of the first hollow cavity facing the air outlet chamber 102 and the side of the second hollow cavity facing the air outlet chamber 102.

[0173] In other embodiments, the air outlet chamber 102 can also be communicated with only the side of the first hollow cavity facing the air outlet chamber 102.

[0174] In yet other embodiments, the air outlet chamber 102 can also be communicated with only the side of the second hollow cavity facing the air outlet chamber 102.

[0175] The first part 101a and the second part 101b are respectively formed on the base 111 and the cover plate 112, so that the first part 101a and the second part 101b are easily made to have different shapes, forming a dust removal chamber 101 with a specific shape.

[0176] Referring to FIGS. 4-5, according to some embodiments of the present application, the air outlet chamber 102 extends along a third direction Z, and the side wall of the air outlet chamber 102 is parallel to the third direction Z, and the third direction Z is different from the first direction X.

[0177] The first opening 41 and the second opening 42 are opposite along the first direction X, and the air inlet 31 and the air outlet 32 are opposite along the second direction Y.

[0178] In some embodiments, with the direction in which the second opening 42 is located relative to the first opening 41 as up, the direction in which the first opening 41 is located relative to the second opening 42 as down, the direction in which the air inlet 31 is located relative to the air outlet 32 as right, and the direction in which the air outlet 32 is located relative to the air inlet 31 as left, the third direction Z can be the upper left of the first opening 41. That is, the air outlet chamber 102 extends along the upper left of the first opening 41, and the air outlet 32 is located at the upper left of the first opening 41, so that the airflow at the first opening 41 carrying a large amount of dust is transported to the air outlet 32 along the upper left oblique direction.

[0179] In other embodiments, the third direction Z can also be the lower left of the first opening 41.

[0180] In some embodiments, the included angle between the third direction Z and the first direction X can be adjusted according to different dust removal requirements.

[0181] In some embodiments, the third direction Z can be parallel to the second direction Y, and the second direction Y is perpendicular to the first direction X. That is, the air outlet chamber 102 extends along a direction parallel to the plane in which the first opening 41 is located, so that the airflow at the first opening 41 is transmitted to the air outlet chamber 102 along a horizontal direction.

[0182] The side wall of the air outlet chamber 102 is parallel to the third direction Z, that is, the air outlet chamber 102 has the shape of a straight cylinder, so that the airflow is transmitted along a straight line path in the third direction Z in the air outlet chamber 102, which is beneficial to improve the transmission efficiency of the airflow in the air outlet chamber 102.

[0183] In some embodiments, the dust removal device also has an air exhaust pipe 52 connected between the air exhaust pipe 52 and the air outlet 32 through a flange 53, and the air exhaust pipe 52 is used to connect an air exhaust device. The air exhaust pipe 52 extends along the third direction Z, that is, the extension direction of the air exhaust pipe 52 is consistent with the extension direction of the air outlet chamber 102, so that the airflow can be transmitted to the air exhaust device along the same direction after entering the dust removal chamber 101.

[0184] It can be found that the transmission direction of the airflow in the air outlet chamber 102 is the third direction Z, which is different from the first direction X, so that the problem that the airflow carrying dust flows too much in the dust removal chamber 101 due to the airflow carrying dust flowing along the first direction X can be improved, and the problem that the dust carried in the airflow remains in the dust removal chamber 101 can be further improved.

[0185] Referring to FIGS. 5-15, according to some embodiments of the present application, in the case that the dust cover 1 comprises a base 111 and a cover plate 112, the base 111 and the cover plate 112 cooperate to enclose the air outlet chamber 102, wherein the second opening 42 is formed at the top of the cover plate 112, the first opening 41 is formed at the bottom of the base 111, and the air outlet 32 is arranged close to the top of the cover plate 112.

[0186] That is, the air outlet 32 is disposed closer to the second opening 42 than to the first opening 41. Exemplarily, the relative distance from the center of the air outlet 32 to the bottom of the base 111 is greater than the relative distance from the center of the air outlet 32 to the top of the cover plate 112. The airflow carrying dust near the first opening 41 is transmitted to the air outlet 32 in a direction away from the first opening 41.

[0187] In some embodiments, the air outlet 32 can be disposed on the base 111 together with the first opening 41, and the second opening 42 is disposed on the cover plate 112.

[0188] Exemplarily, referring to FIG. 7, in some embodiments, the base 111 can include a substrate 1001 and a protruding structure 1002 fixed to one side of the substrate 1001, the protruding structure 1002 protruding toward the cover plate 112 relative to the substrate 1001.

[0189] Referring to FIGS. 5 and 7-12, the protruding structure 1002 has a third hollow cavity 102a inside the protruding structure 1002, the substrate 1001 has a first groove 102b inside, and the cover plate 112 has a second groove 102c inside. The first groove 102b is recessed away from the cover plate 112, and the second groove 102c is recessed away from the substrate 1001. The third hollow cavity 102a, the second groove 102b, and the second groove 102c are in communication with each other and enclose an air outlet chamber 102.

[0190] Among them, the side of the third hollow cavity 102a away from the first groove 102b is the air outlet 32, and the side of the third hollow cavity 102a toward the first groove 102b is in communication with the first groove 102b. The inner wall of the first groove 102b is connected with part of the inner wall of the third hollow cavity 102a, so that the third hollow cavity 102a and the first groove 102b are in communication.

[0191] The cover plate 112 is covered on the substrate 1001 of the base 111, so that the first groove 102b and the second groove 102c are opposite and in communication, and the remaining part of the inner wall of the third hollow cavity 102a is connected with the inner wall of the second groove 102c, so that the third hollow cavity 102a and the second groove 102c are also in communication, so that the third hollow cavity 102a, the first groove 102b, and the second groove 102c are all in communication and enclose the air outlet chamber 102.

[0192] In some embodiments, the inner wall of the third hollow cavity 102a is parallel to the third direction Z, the inner wall of the first groove 102b is parallel to the third direction Z, and the inner wall of the second groove is parallel to the third direction Z, so that the side wall of the air outlet chamber 102 enclosed thereby is parallel to the third direction Z.

[0193] In some embodiments, the first recess 102b is adjacent to and communicates with the first hollow cavity of the first part 101a forming the dust removal chamber, so that the dust removal chamber 101 communicates with the air outlet chamber 102.

[0194] In other embodiments, the air outlet 32 can also be arranged on the cover plate 112 together with the second opening 42, and the first opening 41 is arranged on the base 111. In this way, the air outlet 32 is arranged closer to the second opening 42 than the first opening 41, which is easy to achieve.

[0195] In some embodiments, the air outlet 32 can also be arranged close to the bottom of the base 111, i.e., the air outlet 32 is arranged closer to the first opening 41 than the second opening 42, so that the air flow at the first opening 41 has a shorter path to the air outlet 32, accelerating the air flow.

[0196] The air outlet 32 is arranged close to the top of the cover plate 112, i.e., the air outlet 32 is arranged closer to the second opening 42 than the first opening 41, so that the air outlet 32 can draw the dust at the first opening 41 away in a direction away from the first opening 41, which can better improve the problem of dust accumulation at the first opening 41.

[0197] Referring to FIG. 16, FIG. 16 is a cross-sectional structural schematic diagram of a dust removal device according to some embodiments of the present application.

[0198] According to some embodiments of the present application, the dust removal device further comprises a pressing plate 2 having a first through hole 61, and the dust removal cover 1 is fixed to the pressing plate 2, and the first opening 41 of the dust removal chamber 101 communicates with the first through hole 61.

[0199] The object to be dusted is located on the side of the pressing plate 2 away from the dust removal cover 1 and opposite the first through hole 61, so that the first through hole 61 exposes the surface of the object to be dusted. Since the first opening 41 communicates with the first through hole 61, the first opening 41 can also expose the surface of the object to be dusted.

[0200] In some embodiments, the first opening 41 and the first through hole 61 are all opposite.

[0201] In some embodiments, the first through hole 61 penetrates the pressing plate 2 along the first direction X, and in the direction of the dust removal cover 1 pointing to the pressing plate 2, the aperture of the first through hole 61 can gradually decrease, i.e., the first through hole 61 has a structure of a tapered cavity.

[0202] It can be understood that the opening of the first through hole 61 away from the dust removal cover 1 is used to expose the surface of the object to be dusted. In order to make the surface of the object to be dusted exposed by the first through hole 61 be exposed by the first opening 41, so as to perform efficient laser treatment on the object to be dusted, in some embodiments, the cross-sectional area of the first opening 41 is greater than the cross-sectional area of the opening of the first through hole 61 away from the dust removal cover 1.

[0203] In some embodiments, the first through hole 61 penetrates the pressing plate 2 along the first direction X, and the aperture of the first through hole 61 can also be constant in the direction of the dust cover 1 pointing to the pressing plate 2.

[0204] In some embodiments, the dust cover 1 comprises a base 111 and a cover plate 112, and the pressing plate 2 is connected to the base 111 on the side away from the cover plate 112.

[0205] In some embodiments, the pressing plate 2 and the base 111 can be detachably connected. For example, the connection can be achieved by bolt connection, buckle connection, pin connection or other detachable connection.

[0206] The pressing plate 2 can provide support for the dust cover 1, and the first opening 41 is in communication with the first through hole 61, so that the airflow in the dust removal chamber 101 can blow through the first opening 41 to carry away the dust on the surface of the object to be dusted exposed by the first through hole 61.

[0207] The embodiments of the present application also provide a laser processing device for laser processing of a battery, which comprises the dust removal device in the above embodiments. The dust removal device is used to remove dust generated by laser processing.

[0208] Referring to FIGS. 3-15, the laser emitted by the laser processing device can irradiate the first opening 41 along the second opening 42 to process the battery located at the first opening 41. At the same time, the dust cover 1 can remove the dust generated on the surface of the battery during the laser processing, achieving efficient dust removal while laser processing of the battery.

[0209] In some embodiments, the laser processing can include laser welding, laser cleaning, laser cutting and the like. The laser processing device can be any device known to those skilled in the art that can perform any of the processes of laser welding, laser cleaning, laser cutting and the like.

[0210] Since the dust removal device can improve the problem of airflow turbulence caused by the airflow carrying dust flowing in the dust removal chamber 101, thereby causing dust to remain in the dust removal chamber 101, and improve the dust removal efficiency of the object to be dusted, the battery can be efficiently dusted while being laser processed by the laser processing device, so that the quality of the battery is higher.

[0211] According to some embodiments of the present application, the laser processing device is configured for laser cleaning of the liquid injection port of the battery.

[0212] Referring to FIGS. 3-15, the first opening 41 of the dust removal cover 1 exposes the liquid injection port of the battery, so that the laser cleaning irradiates the surface of the liquid injection port of the battery by a high-energy light beam, and the dust peeled off from the liquid injection port of the battery is carried away by the airflow in the dust removal chamber 101.

[0213] Referring to FIG. 16, in some embodiments, the battery is located on the side of the pressing plate 2 away from the cover plate 112, and the liquid injection port of the battery is placed opposite to the first through hole 61 of the pressing plate 2, the first through hole 61 exposes the liquid injection port of the battery, and the first opening 41 is opposite to and communicates with the first through hole 61.

[0214] The dust removal device can efficiently remove the dust generated during the laser cleaning of the liquid injection port of the battery, thereby improving the cleaning efficiency of the liquid injection port of the battery.

[0215] Referring to FIGS. 3-15, the dust removal device provided by the embodiments of the present application is also used for dust removal during laser processing of a to-be-cleaned object. The dust removal device comprises a dust removal cover 1, the dust removal cover 1 has a dust removal chamber 101 penetrating through the dust removal cover 1, and the dust removal chamber 101 has a first opening 41 and a second opening 42 opposite in a first direction X. The laser can irradiate the first opening 41 through the second opening 42 to process the to-be-cleaned object located at the first opening 41.

[0216] The dust removal cover 1 further comprises an air inlet 31 located on one side of the dust removal chamber 101 in a second direction Y and an air outlet 32 located on the other side of the dust removal chamber 101 in the second direction Y. The dust removal chamber 101 communicates with the air inlet 31 and the air outlet 32, and the first direction X is perpendicular to the second direction Y. The air inlet 31 is connected to an air inlet pipe 51, and the air outlet 32 is connected to an air outlet pipe 52.

[0217] The dust removal cover 1 further comprises an air outlet chamber 102 located on the side of the dust removal chamber 101 close to the air outlet 32, which communicates with the air outlet 32 and the dust removal chamber 101. The air outlet chamber 102 is connected to the part of the outer periphery of the first opening 41, and the air outlet chamber 102 extends along a third direction Z. The side wall of the air outlet chamber 102 is parallel to the third direction Z, and the included angles between the third direction Z and the first direction X and the second direction Y are both acute angles.

[0218] The dust removal cover 1 further comprises an air inlet chamber 103, one side of the air inlet chamber 103 communicates with the air inlet 31, and the other side of the air inlet chamber 103 is connected to the dust removal chamber 101 through a slit air passage 103a. The cross section of the slit air passage 103a perpendicular to the extension direction thereof is strip-shaped. The slit thickness d of the slit air passage 103a is 0.02mm-0.5mm. In some embodiments, the slit thickness d of the slit air passage 103a can be 0.05mm-0.1mm.

[0219] The air inlet chamber 103 further comprises a buffer cavity 103b located at the side of the slit air passage 103a away from the dust removal chamber 101, and the buffer cavity 103b is communicated with the air inlet 31 and the slit air passage 103a. The side of the buffer cavity 103b facing the slit air passage 103a has a strip-shaped opening matching the strip-shaped slit air passage 103a, the strip-shaped opening is connected to the slit air passage 103a, and the height dimension of the strip-shaped opening is smaller than the height dimension of the buffer cavity 103b.

[0220] The dust removal cover 1 comprises a base 111 and a cover plate 112 arranged on the base 111, and the base 111 and the cover plate 112 cooperate to enclose the dust removal chamber 101, the air inlet chamber 103 and the air outlet chamber 102.

[0221] The base 111 comprises a first protruding part 1031 protruding towards the cover plate 112, and the cover plate 112 comprises a second protruding part 1032 protruding towards the base 111, wherein the first protruding part 1031 and the second protruding part 1032 cooperate to form the slit air passage 103a.

[0222] The base 111 further comprises a first recessed part 1033 recessed away from the cover plate 112 relative to the first protruding part 1031, and the cover plate 112 further comprises a second recessed part 1034 recessed away from the base 111 relative to the second protruding part 1032, wherein the first recessed part 1033 and the second recessed part 1034 cooperate to form the buffer cavity 103b.

[0223] The cover plate 112 has a first hollow cavity penetrating through the base 111 and a second hollow cavity penetrating through the cover plate 112. The first hollow cavity and the second hollow cavity are opposite to each other and communicated with each other, and constitute the dust removal chamber 101. The air inlet chamber 103 is communicated with the side of the first hollow cavity facing the air inlet chamber 103. The air outlet chamber 102 can be communicated with the side of the first hollow cavity facing the air outlet chamber 102 and the side of the second hollow cavity facing the air outlet chamber 102.

[0224] The base 111 can comprise a base plate 1001 and a protruding structure 1002 fixed to one side of the base plate 1001, and the protruding structure 1002 protrudes towards the cover plate 112 relative to the base plate 1001. The protruding structure 1002 has a third hollow cavity 102a penetrating through the protruding structure 1002, the base plate 1001 has a first recess 102b, and the cover plate 112 has a second recess 102c. The first recess 102b is recessed away from the cover plate 112, and the second recess 102c is recessed away from the base plate 1001. The cover plate 112 is arranged on the base plate 1001 of the base 111, so that the first recess 102b and the second recess 102c are opposite to each other, the third hollow cavity 102a, the first recess 102b and the second recess 102c are communicated with each other, and enclose the air outlet chamber 102.

[0225] The flow direction of the air flow in the dust removal device is in sequence: the air inlet pipe 51, the buffer cavity 103b, the slit air channel 103a, the first hollow cavity, the second hollow cavity, the air outlet chamber 102, and the air outlet pipe 52.

[0226] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the description of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A dust removal device, comprising: A dust removal hood is used to cover the surface of the object to be dusted and to form a dust removal chamber with the surface of the object to be dusted. The dust removal hood includes: The first opening is used to contact the surface of the object to be dusted; an air inlet, located at a first side of the dust removal chamber, for connecting to an air source; an air outlet located at a second side of the dust removal chamber, the dust removal chamber being connected to the air inlet and the air outlet; and The air outlet chamber is located at a side of the dust removal chamber close to the air outlet, communicating with the air outlet and the dust removal chamber, and the air outlet chamber is connected to a portion of the outer periphery of the first opening.

2. The dust removal device according to claim 1, wherein: The dust cover also has an air intake chamber, which includes: slit airway; A buffer chamber, one side of the buffer chamber is connected to the air inlet, and the other side is connected to the dust removal chamber through the slit air channel, and the cross section of the slit air channel perpendicular to its extension direction is strip-shaped.

3. The dust removal device according to claim 2, wherein: The slit thickness of the slit airway is 0.02 mm to 0.5 mm.

4. The dust removal device according to claim 2 or 3, wherein: The dust removal cover includes a base and a cover plate covered on the base, and the base and the cover plate cooperate to enclose the air intake chamber.

5. The dust removal device according to claim 4, wherein: The base includes a first protrusion protruding toward the cover; the cover includes a second protrusion protruding toward the base; Wherein, the first protrusion and the second protrusion cooperate to form the slit airway.

6. The dust removal device according to any one of claims 1 to 5, wherein: The dust removal device is used to remove dust during laser processing of the object to be dusted, the dust removal chamber passes through the dust removal cover, the first opening is located at one end of the dust removal chamber, and the other end of the dust removal chamber has a second opening, the second opening is at least partially opposite to the first opening along a first direction, so that the laser can be irradiated along the second opening to the first opening to process the object to be dusted located at the first opening.

7. The dust removal device according to claim 6, wherein: The dust removal chamber penetrates the dust removal cover along the first direction.

8. The dust removal device according to claim 6 or 7, wherein: The air inlet and the air outlet are located on opposite sides of the dust removal chamber in a second direction, and the first direction is perpendicular to the second direction.

9. The dust removal device according to claim 8, wherein: The dust removal chamber includes a first portion and a second portion adjacent to each other along the first direction, the first opening is located in the first portion, the second opening is located in the second portion, and a maximum cross-sectional area of ​​the first portion along the second direction is greater than a maximum cross-sectional area of ​​the second portion along the second direction.

10. The dust removal device according to claim 9, wherein: At least a portion of the sidewall of the second portion is parallel to the first direction, and at least a portion of the sidewall of the first portion is inclined toward a direction away from the center of the first portion.

11. The dust removal device according to any one of claims 6 to 10, wherein: At least a portion of the side wall of the dust removal chamber is arc-shaped.

12. The dust removal device according to any one of claims 6 to 11, wherein: In a case where the dust removal cover includes a base and a cover plate, the base and the cover plate cooperate to enclose the dust removal chamber.

13. The dust removal device according to claim 12, wherein: In the case where the dust removal chamber includes a first portion and a second portion adjacent to each other, the second portion is formed on the cover plate, and the first portion is formed on the base.

14. The dust removal device according to any one of claims 6 to 13, wherein: The air outlet chamber extends along a third direction, and a sidewall of the air outlet chamber is parallel to the third direction, which is different from the first direction.

15. The dust removal device according to any one of claims 6 to 14, wherein: When the dust cover includes a base and a cover, the base and the cover cooperate to form the air outlet chamber, wherein the second opening is opened at the top of the cover, the first opening is opened at the bottom of the base, and the air outlet is arranged near the top of the cover.

16. The dust removal device according to any one of claims 1 to 15, wherein: Also includes: The pressing plate has a first through hole, the dust removal cover is fixed on the pressing plate, and the first opening of the dust removal chamber is communicated with the first through hole.

17. A laser processing device for performing laser processing on batteries, comprising the dust removal device according to any one of claims 1 to 16, wherein the dust removal device is used to remove dust generated by the laser processing.

18. The apparatus according to claim 17, wherein The laser processing equipment is configured to perform laser cleaning on the liquid injection port of the battery.

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