Welding dust removal apparatus and welding device

Abstract

The application provides a dust removal device and a welding device, and relates to the technical field of welding. The shell of the welding dust removal device comprises a containing cavity, a first inlet, a second inlet and an outlet which are in communication with the containing cavity. The first inlet is used for allowing welding slag to enter the containing cavity. The second inlet is used for allowing laser outside the shell to pass through the containing cavity and be emitted from the first inlet. A negative pressure mechanism is in communication with the outlet. The negative pressure mechanism is used for separating the welding slag in the containing cavity from the containing cavity through the negative pressure formed in the containing cavity. An electric field generating mechanism is arranged in the containing cavity. The electric field generating mechanism is used for applying an electric field force to the welding slag in the containing cavity and the electric field force is directed to the outlet. The welding dust removal device can improve the separation effect of the welding slag in the containing cavity.

Description

Technical Field

[0001] This application relates to the field of welding technology, and in particular to a welding dust removal device and welding apparatus. Background Technology

[0002] The assembly of various battery components requires welding. The welding slag generated during the welding process can cause short circuits and other problems for the battery. Therefore, it is necessary to install welding dust removal equipment to remove the welding slag generated during the welding process from the vicinity of the battery and reduce the impact of the welding slag on the battery.

[0003] Welding dust removal equipment generally includes a receiving cavity, a welding head, and a negative pressure mechanism. The welding head is located inside the housing. During the welding process, the negative pressure mechanism is used to draw the welding slag generated during the welding process into the receiving cavity by creating a negative pressure inside the receiving cavity, and then further extract the welding slag in the receiving cavity to an area away from the battery by the negative pressure mechanism.

[0004] However, the welding dust removal equipment in the aforementioned related technologies has a poor effect on removing welding slag from the containment cavity. Utility Model Content

[0005] This application provides a welding dust removal device and a welding apparatus to solve the technical problem that the welding dust removal devices in the above-mentioned related technologies have poor extraction effect on welding slag in the receiving cavity.

[0006] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0007] A first aspect of this application provides a welding dust removal device, comprising:

[0008] The housing includes a receiving cavity, and a first inlet, a second inlet, and an outlet communicating with the receiving cavity. The first inlet and the second inlet are disposed opposite to each other along a first direction. The first inlet is used to allow welding slag to enter the receiving cavity, and the second inlet is used to allow laser light from outside the housing to pass through the receiving cavity and exit from the first inlet.

[0009] A negative pressure mechanism, connected to the outlet, is used to extract welding slag from the receiving cavity by the negative pressure formed in the receiving cavity.

[0010] An electric field generating mechanism is disposed within the receiving cavity, and the electric field generating mechanism is used to apply an electric field force toward the outlet to the welding slag within the receiving cavity.

[0011] This application provides a welding dust control device. The internal cavity of the housing is maintained open through two opposing first and second inlets, allowing a laser beam to enter and penetrate the entire cavity from the second inlet. Welding dust particles enter the cavity through the first inlet and move towards the outlet under the directional airflow generated by the negative pressure mechanism. An electric field generating mechanism establishes an electric field gradient extending from the mechanism to the outlet within the cavity. Under the action of the electric field generating mechanism, the welding slag becomes charged and is accelerated towards the outlet by an additional electric field force. The superposition of these two forces significantly increases the particle migration speed. The electric field force is proportional to the particle surface area, providing a stronger driving force for large-diameter particles. This reduces the amount of welding slag deposited in the cavity, improves the slag removal effect, and extends the equipment maintenance cycle.

[0012] Furthermore, in existing technologies, the movement of welding slag is greatly affected by random eddy currents. This solution uses a directional electric field to constrain the trajectory of the welding slag, effectively reducing the disordered collisions of the welding slag in the cavity, thereby helping the welding slag to move to the outlet and be discharged from the receiving cavity.

[0013] In addition, the staggered arrangement of the laser beam penetration path and the electric field area can prevent high-voltage discharge from interfering with optical components.

[0014] In one possible implementation, the electric field generating mechanism includes:

[0015] A fixing component is disposed on the inner wall of the housing;

[0016] A generating component, connected to the fixing component, is used to charge the weld slag within the receiving cavity;

[0017] A grounding component is disposed on the side of the outlet opposite to the receiving cavity;

[0018] The potential of the generating component is higher than that of the grounding component, so as to form an electric field force along the generating component to the grounding component.

[0019] In one possible implementation, the generating component includes:

[0020] Back plate, connected to the fixing assembly;

[0021] The power supply is electrically connected to the backplate.

[0022] A discharge structure is disposed on the side of the back plate facing away from the power source, and the discharge structure is used to discharge to the welding slag under the action of the power source.

[0023] In one possible implementation, the electric field generating mechanism further includes a first insulating element;

[0024] The first insulating member is disposed between the fixing component and the generating component, and the first insulating member is used to insulate the fixing component and the generating component from each other.

[0025] In one possible implementation, the fixing component includes:

[0026] A bracket is fixed to the inner wall of the housing;

[0027] The rotating shaft is rotatably connected at one end to the bracket and at the other end to the generating component;

[0028] The rotating shaft is used to drive the generating component to rotate, so as to adjust the direction of the electric field force.

[0029] In one possible implementation, the fixing component further includes a connecting plate;

[0030] The connecting plate includes a connecting part and a planar part that are connected to each other. The connecting part is connected to the rotating shaft, and the planar part is connected to the generating component.

[0031] In one possible implementation, the negative pressure mechanism includes:

[0032] The pipe has one end connected to the environment outside the cavity and the other end connected to the outlet;

[0033] A negative pressure generating structure is provided in the pipeline to create negative pressure in the pipeline and the receiving cavity;

[0034] A portion of the grounding assembly is disposed inside the pipe on the side facing the outlet, and another portion extends to the outside of the pipe and is grounded.

[0035] In one possible implementation, the grounding component includes:

[0036] A grounding element is installed on the inner wall of the pipe and near the outlet;

[0037] The grounding wire has one end electrically connected to the grounding component and the other end extending to the outside of the pipe and grounded.

[0038] In one possible implementation, the housing is a metal housing, and the pipe is a metal pipe;

[0039] The welding dust removal equipment further includes a second insulating component, which is disposed between the grounding component and the inner wall of the metal pipe. The second insulating component is used to insulate the grounding component from the metal pipe, and neither the grounding component nor the grounding wire makes conductive contact with the metal shell.

[0040] In one possible implementation, the electric field generating mechanism is positioned close to the first inlet relative to the second inlet, and the electric field generating mechanism and the outlet are arranged at intervals along a second direction, which intersects the first direction.

[0041] In one possible implementation, the extension direction of the outlet forms an angle with the first direction, the angle being greater than 0° and less than or equal to 90°.

[0042] One possible implementation also includes:

[0043] A pressure block is disposed on the outer surface of the housing and at the first inlet. The pressure block has a first through hole communicating with the first inlet. The pressure block is used to press the workpiece to be welded.

[0044] A second aspect of the embodiments of this application provides a welding apparatus, which includes a body and a welding dust removal device as described above;

[0045] The body includes a welding head, which is disposed outside the housing and facing the second inlet. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 This is a schematic diagram of the structure of a welding dust removal device provided in an embodiment of this application;

[0048] Figure 2 This is a cross-sectional schematic diagram of a welding dust removal device provided in an embodiment of this application;

[0049] Figure 3 This is a schematic diagram of the structure of an electric field generating mechanism provided in an embodiment of this application;

[0050] Figure 4 This is a schematic diagram of the structure of an electric field generating mechanism from another angle, provided as an embodiment of this application.

[0051] Figure 5 This is a schematic diagram of the structure of a generating component provided in an embodiment of this application;

[0052] Figure 6 An exploded view of a fixing component provided in an embodiment of this application;

[0053] Figure 7for Figure 2 A partial schematic diagram at point N.

[0054] Explanation of reference numerals in the attached figures:

[0055] 100. Shell;

[0056] 110. Receiving cavity; 120. First inlet; 130. Second inlet; 140. Outlet;

[0057] 200. Negative pressure mechanism;

[0058] 210. Pipeline; 220. Negative pressure generating structure;

[0059] 300. Electric field generating mechanism;

[0060] 310. Fixed component; 320. Generating component; 330. Grounding component;

[0061] 311. Bracket; 312. Shaft; 313. Connecting plate; 321. Back plate;

[0062] 322. Discharge structure; 323. First insulating component; 331. Grounding component; 332. Grounding wire;

[0063] 3131, Connecting part; 3132, Flat part; 3221, Support column; 3222, Discharge tip;

[0064] 3231. Partition panel; 3232. Side panel;

[0065] 400. Second insulating component;

[0066] 500, pressing blocks;

[0067] 600. Laser channel. Detailed Implementation

[0068] As described in the background section, the welding dust removal equipment in the aforementioned related technologies has a poor effect on removing welding slag from the containment cavity.

[0069] The reason for this problem is that, in existing technologies, welding dust removal devices in battery production processes mostly use negative pressure air extraction to remove welding slag particles. Traditional devices guide the movement of welding slag through the drag force of airflow within the dust removal chamber, but large-diameter particles tend to deposit on the inner wall of the device or the surface of the battery cell due to gravity, resulting in reduced removal efficiency. The uncertainty of airflow direction may expand the diffusion range of welding slag, while eddy currents cause some particles to remain suspended for extended periods, affecting the stability of laser welding power. For example, in the tab welding process, if spattered welding slag is not removed in time, it may contaminate the laser lens or deposit inside the battery cell, increasing the risk of short circuits.

[0070] To address the aforementioned issues, this application provides a welding dust control device and welding apparatus. The cavity formed inside the housing is maintained open through two opposing first and second inlets, allowing a laser beam to enter from the second inlet and penetrate the entire cavity. Welding dust particles enter the cavity through the first inlet and move towards the outlet under the directional airflow generated by the negative pressure mechanism. An electric field generating mechanism establishes an electric field gradient extending from the generating mechanism towards the outlet within the cavity. Under the action of the electric field generating mechanism, the welding slag becomes charged, and is accelerated towards the outlet by an additional electric field force. The superposition of these two forces significantly increases the particle migration speed. The electric field force is proportional to the particle surface area, providing a stronger driving force for large-diameter particles. This reduces the amount of welding slag deposited within the cavity, improves the slag removal effect, and extends the equipment maintenance cycle.

[0071] Furthermore, in existing technologies, the movement of welding slag is greatly affected by random eddy currents. This solution uses a directional electric field to constrain the trajectory of the welding slag, effectively reducing the disordered collisions of the welding slag in the cavity, thereby helping the welding slag to move to the outlet and be discharged from the receiving cavity.

[0072] In addition, the staggered arrangement of the laser beam penetration path and the electric field area can prevent high-voltage discharge from interfering with optical components.

[0073] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0074] refer to Figure 1 and Figure 2 This application provides a welding dust removal device, which may include a housing 100, a negative pressure mechanism 200, and an electric field generating mechanism 300.

[0075] The housing 100 may include a receiving cavity 110, and a first inlet 120, a second inlet 130, and an outlet 140 communicating with the receiving cavity 110. The first inlet 120 and the second inlet 130 are along a first direction (e.g., Figure 1 The two inlets are arranged opposite each other in the X direction. The first inlet 120 is used to allow welding slag to enter the receiving cavity 110, and the second inlet 130 is used to allow laser from outside the housing 100 to pass through the receiving cavity 110 and exit from the first inlet 120.

[0076] The cavity 110 of the housing 100 refers to a structure with a sealed space, which can be a box structure made of metal or engineering plastic. The first inlet 120 and the second inlet 130 are symmetrically opened along the length of the equipment, for example, rectangular openings are provided on both sides of the cuboid housing 100.

[0077] The negative pressure mechanism 200 is connected to the outlet 140. The negative pressure mechanism 200 is used to extract the welding slag in the receiving cavity 110 from the receiving cavity 110 by the negative pressure formed in the receiving cavity 110.

[0078] Among them, the negative pressure mechanism 200 refers to a device that can generate a negative pressure environment. Specifically, it can be a centrifugal fan or vacuum pump connected to the pipeline 210 system, which continuously draws in gas through the outlet 140 to form a directional airflow.

[0079] An electric field generating mechanism 300 is disposed inside the receiving cavity 110. The electric field generating mechanism 300 is used to apply an electric field force to make the welding slag inside the receiving cavity 110 move toward the outlet 140.

[0080] Among them, the electric field generating mechanism 300 refers to a device that can establish a directional electric field. Specifically, it can be a combination of high-voltage electrodes and grounding electrodes, and a potential difference can be formed between the electrodes by a DC power supply. For example, a discharge electrode can be arranged at the top of the receiving cavity 110 and a grounding electrode can be set at the bottom to form a vertical electric field.

[0081] In practice, the laser beam enters the receiving cavity 110 through the second inlet 130 and then exits through the first inlet 120 to weld the workpiece corresponding to the first inlet 120. The weld slag generated during welding enters the receiving cavity 110 through the first inlet 120. When the negative pressure mechanism 200 operates, it creates an airflow from the first inlet 120 to the outlet 140 within the cavity. Simultaneously, the electric field generating mechanism 300 generates an electric field pointing towards the outlet 140. Under the combined action of the airflow drag force and the electric field force, the charged weld slag moves along a predetermined trajectory. The superposition of these two forces enhances the kinetic energy of the particles. The electric field direction is aligned with the airflow direction to avoid force field cancellation. For example, the high-voltage electrode is positioned close to the first inlet 120, and the grounding electrode is integrated into the inner wall of the outlet 140 pipe 210. This structure ensures that the weld slag is immediately subjected to the electric field upon entering the cavity, effectively shortening the particle residence time.

[0082] This application provides a welding dust control device. The receiving cavity 110 formed inside the housing 100 is maintained as an open channel through two opposing first inlets 120 and second inlets 130, allowing a laser beam to enter from the second inlet 130 and penetrate the entire cavity. Welding dust particles enter the cavity through the first inlet 120 and move towards the outlet 140 under the directional airflow generated by the negative pressure mechanism 200. An electric field generating mechanism 300 establishes an electric field gradient extending from the electric field generating mechanism 300 towards the outlet 140 within the cavity. Under the action of the electric field generating mechanism 300, the welding slag becomes charged and is accelerated towards the outlet 140 by an additional electric field force. The superposition of these two forces significantly increases the particle migration speed. The electric field force is proportional to the particle surface area, providing a stronger driving force for large-diameter particles. This reduces the amount of welding slag deposited in the receiving cavity 110, improves the removal effect of welding slag from the receiving cavity 110, and extends the equipment maintenance cycle.

[0083] Furthermore, in the existing technology, the movement of welding slag is greatly affected by random eddy currents. This solution uses a directional electric field to constrain the trajectory of welding slag, effectively reducing the disordered collisions of welding slag in the cavity, thereby helping the welding slag to move to the outlet 140 and be discharged from the receiving cavity 110.

[0084] In addition, the staggered arrangement of the laser beam penetration path and the electric field area can prevent high-voltage discharge from interfering with optical components.

[0085] refer to Figure 2 In some embodiments, the electric field generating mechanism 300 is positioned close to the first inlet 120 relative to the second inlet 130, and the electric field generating mechanism 300 and the outlet 140 are along a second direction (e.g., Figure 2 The second direction is arranged at intervals with the first direction (e.g., the Y direction). Figure 2 Intersects in the X direction.

[0086] The first direction refers to the relative direction between the first inlet 120 and the second inlet 130, which can be either horizontal or vertical. The second direction refers to the arrangement direction of the electric field generating mechanism 300 and the outlet 140, which can be a direction that forms an angle with the first direction, such as a vertical direction.

[0087] Among them, the interval arrangement means that the electric field generating mechanism 300 and the outlet 140 are spatially separated in the second direction, which can be achieved by staggered arrangement or symmetrical arrangement.

[0088] The electric field generating mechanism 300 being positioned close to the first inlet 120 means that the horizontal distance between its installation position and the first inlet 120 is less than the horizontal distance between its installation position and the second inlet 130.

[0089] In practical implementation, when welding slag enters the receiving cavity 110 through the first inlet 120, the electric field generating mechanism 300 applies an electric field force at the initial stage of slag entry. The direction of the electric field force and the direction of the airflow generated by the negative pressure mechanism 200 form a resultant force in the second direction, so that the welding slag is simultaneously driven by both electric field force and negative pressure during its movement. The structure in which the electric field generating mechanism 300 and the outlet 140 are spaced apart along the second direction ensures that the area of ​​action of the electric field force covers the main movement path of the welding slag after it enters. In this layout, the spatial angle formed by the second direction and the first direction can adjust the vector superposition effect of the electric field force and the airflow force. For example, when the second direction is perpendicular to the first direction, the electric field force can be decomposed into a lateral component force to assist the welding slag in detaching from the deposition area.

[0090] This solution optimizes the position of the electric field generating mechanism 300, allowing the electric field force to intervene from the initial stage of weld slag entry, preventing large particles from prematurely depositing due to gravity. Early intervention with the electric field force reduces the suspension time of weld slag inside the equipment, thus minimizing the risk of deposition.

[0091] Through the above technical solution, this application achieves the synergistic effect of electric field force and negative pressure on welding slag in the initial stage of movement, effectively improving the removal efficiency of large-particle welding slag. The electric field generating mechanism 300 and the outlet 140 are arranged in a specific direction to form a composite force field, avoiding particle retention caused by a single force direction. This structural layout, while ensuring dust removal effect, reduces the installation complexity of the electric field generating mechanism 300 through spatial optimization, which is conducive to the miniaturization design of the equipment.

[0092] refer to Figure 2 In some embodiments, the extension direction of outlet 140 (e.g.) Figure 2 The M direction in the equation forms an angle with the first direction (e.g., the direction M in the equation forms an angle with the first direction). Figure 2 The included angle (a) is greater than 0° and less than or equal to 90°. For example, the included angle (a) can be one of 10°, 30°, 45°, 60° and 80°.

[0093] By keeping the angle between the extension direction of outlet 140 and the first direction between 0° and 90°, it is possible to avoid excessive resistance to the driving force of the electric field on the welding slag due to an excessively large angle, thereby reducing the load of the electric field and the power consumption of the electric field generating mechanism 300, and reducing the operating cost of the welding dust removal equipment.

[0094] refer to Figure 2 In some embodiments, the welding dust removal equipment may further include a pressure block 500. The pressure block 500 is disposed on the outer surface of the housing 100 and at the first inlet 120. The pressure block 500 has a first through hole communicating with the first inlet 120 and is used to press the workpiece to be welded.

[0095] By setting the pressure block 500, the parts to be welded can be pressed tightly during the welding dust removal process, preventing the welding from loosening and improving the welding effect.

[0096] In some embodiments, the welding dust removal equipment may further include a laser channel 600, which has a second through-hole communicating with the second inlet 130. The second through-hole is capable of aligning the laser so that the laser can enter the receiving cavity 110 through the laser channel 600 and the second inlet 130. By providing the laser channel 600, the path of welding slag splashing from the second inlet 130 to the outside of the housing 100 can be increased, thereby reducing the probability of welding slag splashing to the outside from the laser channel 600.

[0097] refer to Figure 2 , Figure 3 and Figure 4 In some embodiments, the electric field generating mechanism 300 may include a fixing component 310, a generating component 320, and a grounding component 330.

[0098] The fixing component 310 is disposed on the inner wall of the housing 100. The fixing component 310 refers to the structure used to fix the generating component 320 to the inner wall of the housing 100. Specifically, it can be implemented by a bracket 311 or a rotating shaft 312. The bracket 311 is fixed to the inner wall of the housing 100 by welding or bolts, and the rotating shaft 312 is rotatably connected to the bracket 311 through a bearing.

[0099] The generating component 320 is connected to the fixing component 310 and is used to charge the welding slag within the receiving cavity 110. Charging the welding slag can be understood as the welding slag being a molten metallic substance formed during the welding process. When an electric field is applied to the welding slag, ions or electrons in the slag will move directionally under the influence of the electric field force, thereby causing the welding slag to become charged.

[0100] Among them, the generating component 320 refers to the component used to generate a high potential and discharge to the welding slag. Specifically, it can be implemented by using a back plate 321, a power supply and a discharge structure 322. The back plate 321 is connected to the power supply through wires, and the discharge structure 322 is fixed to the surface of the back plate 321 by welding or snap-fit.

[0101] The grounding component 330 is located on the side of the outlet 140 away from the receiving cavity 110.

[0102] Among them, the grounding component 330 refers to the component used to provide low potential grounding. Specifically, it can be implemented by grounding element 331 and grounding wire 332. Grounding element 331 is fixed to the inner wall of pipe 210 by threads or clamps. One end of grounding wire 332 is welded to grounding element 331, and the other end is connected to external grounding stake.

[0103] The potential of the generating component 320 is higher than that of the grounding component 330 to form an electric field force along the generating component 320 to the grounding component 330.

[0104] In practice, the fixing component 310 is fixed to the inner wall of the housing 100 by welding or bolts, the generating component 320 is connected to the fixing component 310 by bolts or clips, and the grounding component 330 is installed in the pipe 210 outside the outlet 140 by threads or clamps. When power is supplied to the generating component 320, it generates a tip discharge phenomenon, causing the welding slag particles to carry a charge. Under the action of the potential difference between the generating component 320 and the grounding component 330, the charged welding slag is subjected to an electric field force towards the outlet 140. This electric field force is in the same direction as the airflow drag force generated by the negative pressure mechanism 200, and together they drive the welding slag to move towards the outlet 140.

[0105] Compared with existing technologies, current dust removal devices rely solely on negative pressure airflow to pull welding slag, and the trajectory of the welding slag is greatly affected by airflow eddies, making it easy for large particles of welding slag to deposit on the inner wall of the device. This solution, through a combination structure of fixed component 310, generating component 320 and grounding component 330, forms a directional electric field while maintaining the compactness of the device, causing the welding slag to move in a directional manner under the dual forces.

[0106] Through the above technical solution, this application realizes the modular design of the electric field generating mechanism 300. The rigid connection between the fixed component 310 and the housing 100 ensures the discharge stability, and the potential difference setting between the generating component 320 and the grounding component 330 makes the electric field direction controllable.

[0107] refer to Figure 3 and Figure 5 In some embodiments, the generating component 320 may include a backplane 321 and a power supply and discharge structure 322.

[0108] The backplate 321 is connected to the fixing component 310. The backplate 321 refers to a plate-like structure used for support and conduction, which can be made of metal sheet or conductive composite material. The backplate 321 can uniformly conduct the current output by the power supply to the discharge structure 322.

[0109] The power supply is electrically connected to the backplane 321. The power supply refers to the device that provides the potential difference, which can be implemented using a DC high-voltage power supply or a pulse power supply.

[0110] A discharge structure 322 is disposed on the side of the back plate 321 facing away from the power source. The discharge structure 322 is used to discharge to the welding slag under the action of the power source. There can be multiple discharge structures 322, which are spaced apart and evenly arranged on the back plate 321. The discharge structure 322 refers to the component used to release charge, which can be implemented by means of barbs or an array of multiple rod-shaped structures. The tip of the discharge structure 322 ionizes the air under high voltage and releases charge to the welding slag.

[0111] refer to Figure 3 and Figure 5 In some embodiments, if the discharge structure 322 is a barb, the barb may include a support post 3221 and a discharge tip 3222. One end of the support post 3221 is connected to the back plate 321, and the other end is connected to the discharge tip 3222. The back plate 321 transmits current from the support post 3221 to the discharge tip 3222. The discharge tip 3222 can perform tip discharge to charge the welding slag.

[0112] In practical implementation, the backplate 321 is mechanically fixed to the fixing assembly 310. Power is supplied to the backplate 321 via wires, and the discharge structures 322 are fixed to the surface of the backplate 321 by welding or bolting. When the power is turned on, the backplate 321 uniformly transmits the electric potential to each discharge structure 322. The tips of the discharge structures 322 generate a strong electric field due to the curvature effect, causing the surrounding air to ionize and form ions. The charged welding slag moves towards the outlet 140 under the drive of the electric field force, while the airflow generated by the negative pressure mechanism 200 further accelerates the discharge of the welding slag. The planar structure of the backplate 321 ensures a uniform distribution density of the discharge structures 322, avoiding localized charge accumulation or uneven discharge.

[0113] Compared to existing technologies, current dust removal devices typically employ a single airflow traction method without an active charging structure, resulting in the deposition of large welding slag particles due to gravity. This solution, however, achieves uniform charging of the welding slag while simplifying the structure through the combination of a backplate 321 and a discharge structure 322. This eliminates the need for a complex electrode array, reducing manufacturing costs and maintenance complexity.

[0114] Through the above technical solution, this application solves the problem of insufficient control over the trajectory of welding slag movement in traditional dust removal devices. By uniformly distributing current to each discharge structure 322 through the back plate 321, the consistency of welding slag charging efficiency is ensured, while reducing dust removal blind spots caused by uneven local discharge. The direct connection between the back plate 321 and the discharge structure 322 reduces power transmission loss and improves the efficiency of electric field generation.

[0115] refer to Figure 3 , Figure 4 and Figure 5In some embodiments, the electric field generating mechanism 300 may further include a first insulating member 323. The first insulating member 323 is disposed between the fixing component 310 and the generating component 320, and the first insulating member 323 is used to insulate the fixing component 310 and the generating component 320 from each other.

[0116] The first insulating component 323 refers to an insulating material used to block current conduction. Specifically, it can be made of plastic, ceramic or rubber. These materials have high resistance characteristics and can effectively prevent current from flowing between the fixed component 310 and the generating component 320.

[0117] In a specific implementation, the first insulating member 323 is installed between the contact surfaces of the fixing component 310 and the generating component 320. By providing the first insulating member 323, current conduction between the fixing component 310 and the generating component 320 is effectively blocked, preventing the fixing component 310 from transferring charge to the housing 100 or other external structures due to conductivity. For example, when the generating component 320 applies charge to the welding slag through the discharge structure 322, the first insulating member 323 can prevent the charge from being conducted to the surface of the housing 100 through the fixing component 310, thereby eliminating the risk of leakage. This insulating connection method further ensures the stability and controllability of the electric field force, enabling the electric field generating mechanism 300 to continuously and efficiently drive the welding slag towards the outlet 140.

[0118] Through the above technical solution, this application achieves reliable insulation between the fixed component 310 and the generating component 320, avoiding unintended conduction of charge to the housing 100, thereby improving the safety of the welding dust removal equipment. Simultaneously, the insulated connection ensures the concentrated effect of the electric field force, further optimizing the slag removal efficiency and reducing equipment maintenance requirements.

[0119] refer to Figure 3 and Figure 4 In some embodiments, the generating component 320 may include a backplate 321 and a discharge structure 322, and a first insulating member 323 may be disposed between the fixing component 310 and the backplate 321 to insulate the backplate 321 from the fixing component 310.

[0120] refer to Figure 3 and Figure 4 In some embodiments, the first insulating member 323 may include a side panel and an insulating plate located between the fixing assembly 310 and the generating assembly 320. The insulating plate is used to prevent current from being transmitted from the generating assembly 320 to the fixing assembly 310. The side panel is disposed along the outer edge of the insulating plate and can surround the outer periphery of the generating assembly 320, thereby reducing weld spatter and causing it to fall onto the generating assembly 320.

[0121] refer to Figure 3 and Figure 4In some embodiments, if the component 320 may include a back plate 321 and a discharge structure 322, an insulating plate may be disposed between the back plate 321 and the fixing component 310, and a side enclosure may be disposed around the outer periphery of the back plate 321 and the discharge structure 322 to reduce the probability of solder slag splashing and falling on the back plate 321 and the discharge structure 322.

[0122] refer to Figure 4 and Figure 6 In some embodiments, the fixing component 310 may include a bracket 311 and a pivot 312.

[0123] The bracket 311 is fixed to the inner wall of the housing 100. The bracket 311 refers to the support structure fixed to the inner wall of the housing 100, which can be implemented by using an L-shaped or U-shaped frame made of metal or plastic, and is used to provide a stable mounting base for the rotating shaft 312.

[0124] One end of the rotating shaft 312 is rotatably connected to the bracket 311, and the other end is connected to the generating component 320. The rotating shaft 312 is used to drive the generating component 320 to rotate, so as to adjust the direction of the electric field force. The rotating shaft 312 refers to the rotatable component connecting the bracket 311 and the generating component 320, and can change the spatial orientation of the generating component 320 by rotation.

[0125] In practice, the bracket 311 is fixed to the inner wall of the housing 100 by bolts or welding. One end of the rotating shaft 312 is rotatably connected to the bracket 311, and the other end is connected to the generating assembly 320 via a flange or snap-fit ​​structure, or by welding. When it is necessary to adjust the direction of the electric field, the generating assembly 320 is rotated around the axis of the rotating shaft 312 by rotating the rotating shaft 312, thereby changing the orientation of the discharge structure 322 in the generating assembly 320.

[0126] Through the above technical solution, the rotating connection between the rotating shaft 312 and the bracket 311 allows the electric field direction to be dynamically adjusted according to the distribution of welding slag or the airflow state, which improves the flexibility of the electric field generating mechanism 300 in use, and enables the electric field force to adapt to different welding angles or airflow conditions, avoiding the problem of reduced dust removal efficiency caused by a fixed electric field direction, and improving the capture efficiency of welding slag particles.

[0127] refer to Figure 4 and Figure 6 In some embodiments, the fixing component 310 may further include a connecting plate 313. The connecting plate 313 may include a connecting portion 3131 and a planar portion 3132 that are connected to each other. The connecting portion 3131 is connected to the rotating shaft 312, and the planar portion 3132 is connected to the generating component 320.

[0128] The connecting plate 313 is a transition component used to connect the rotating shaft 312 and the generating assembly 320. It can be made of stamped metal sheet and connected to the rotating shaft 312 and the generating assembly 320 by welding or bolting. The flat portion 3132 is the flat area in the connecting plate 313 that contacts the generating assembly 320. It can be a rectangular or circular plate structure, increasing the contact area to improve connection stability. The connecting portion 3131 is the mounting area in the connecting plate 313 that mates with the rotating shaft 312. It can be a sleeve structure or a flange structure, using a keyway or thread to transmit torque to the rotating shaft 312.

[0129] In a specific implementation, if the generating component 320 includes a back plate 321 and a discharge structure 322, the planar portion 3132 and the back plate 321 of the generating component 320 form a surface contact through bolts or by welding, thereby improving the connection stability between the back plate 321 and the connecting plate 313.

[0130] Compared to the direct connection of the rotating shaft 312 to the back plate 321 of the generating component 320, which transmits torque only through point or line contact, the connection is prone to loosening when the electric field direction is frequently adjusted. However, this application improves the connection method between the rotating shaft 312 and the back plate 321 to surface contact by adding a connecting plate 313 with a flat portion 3132, which significantly improves the shear resistance of the connection interface.

[0131] Through the above technical solution, this application effectively solves the problem of insufficient connection stability of the electric field generating device during direction adjustment, ensuring the accuracy of electric field force direction control. The large-area contact design between the flat part 3132 and the back plate 321 allows mechanical vibration energy to be dispersed and absorbed through the contact surface, avoiding connection failure caused by local stress concentration and extending the equipment maintenance cycle.

[0132] In some embodiments, there may be two fixing components 310, which can be connected to both ends of the generating component 320 along its length. The two fixing components 310 can have identical structures and components. This improves the connection stability between the generating component 320 and the fixing components 310.

[0133] refer to Figure 1 , Figure 2 and Figure 7 In some embodiments, the negative pressure mechanism 200 may include a conduit 210 and a negative pressure generating structure 220.

[0134] One end of the pipe 210 is connected to the external environment of the receiving cavity 110, and the other end is connected to the outlet 140. The pipe 210 refers to the channel connecting the receiving cavity 110 and the external environment. It can be implemented by using a round or square pipe made of metal or plastic. Its function is to provide an airflow channel for the removal of welding slag.

[0135] The negative pressure generating structure 220 is installed in the pipe 210 to create a negative pressure in the pipe 210 and the receiving cavity 110. The negative pressure generating structure 220 is a device that generates negative pressure, which can be implemented by a centrifugal fan or a vacuum pump. Its function is to create a negative pressure environment in the receiving cavity 110 through the pipe 210, driving the welding slag to move towards the outlet 140.

[0136] A portion of the grounding component 330 is disposed inside the pipe 210 on the side facing the outlet 140, while another portion extends to the outside of the pipe 210 and is grounded. The portion of the grounding component 330 disposed inside the pipe 210 refers to arranging the conductive component inside the pipe 210 near the outlet 140, which can be achieved using an annular metal sleeve or a mesh structure. Its function is to create a potential difference with the generating component 320, subjecting the charged welding slag to a directional electric field force. The other portion of the grounding component 330 extending to the outside of the pipe 210 and being grounded refers to connecting the conductive component inside the pipe 210 to the ground via a conductor, which can be achieved using copper or aluminum wire welding. Its function is to maintain a stable potential reference and ensure that the direction of the electric field force is controllable.

[0137] In practice, one end of pipe 210 is connected to outlet 140 of receiving cavity 110, and the other end is connected to the external environment. After the negative pressure generating structure 220 is activated, an airflow is formed inside pipe 210, drawing the welding slag inside receiving cavity 110 out through outlet 140. The annular metal sleeve of grounding component 330 is fixed to the inner wall of pipe 210 near outlet 140, and its outer side extends to the outside of pipe 210 and is connected to the ground via a wire. When generating component 320 applies a charge to the welding slag, the charged welding slag accelerates towards outlet 140 under the combined action of negative pressure airflow and electric field force, and is eventually drawn out of receiving cavity 110. Grounding component 330 inside pipe 210 not only maintains a stable potential gradient, but also prevents electrostatic adsorption of welding slag on the inner wall of pipe 210.

[0138] Through the above technical solution, this application solves the problem of blockage caused by electrostatic adsorption of welding slag on the inner wall of pipe 210 in traditional dust removal devices. Simultaneously, the combined effect of electric field force and negative pressure airflow significantly improves the extraction efficiency of large-diameter welding slag. The arrangement of the grounding component 330 inside pipe 210 simplifies the equipment structure, avoids the installation of additional grounding components, and makes the dust removal process more stable and reliable.

[0139] refer to Figure 2 and Figure 7 In some embodiments, the grounding component 330 may include a grounding element 331 and a grounding wire 332.

[0140] The grounding element 331 is disposed around the inner wall of the pipe 210 and near the outlet 140. Simultaneously, the grounding element 331 is also disposed around the outer periphery of the outlet 140. The grounding element 331 refers to a conductive component arranged circumferentially around the inner wall of the pipe 210, which can be implemented using a ring-shaped metal ring or a metal mesh structure. This structure enables the electric field force to form a uniformly distributed closed loop across the cross-section of the pipe 210, preventing excessively high electric field strength in local areas from causing charge accumulation.

[0141] One end of the grounding wire 332 is electrically connected to the grounding component 331, and the other end extends to the outside of the pipe 210 and is grounded. The grounding wire 332 is a conductive connecting cable, which can be made of copper core wire or metal braided tape. This cable maintains reliable conductivity with the grounding component 331 through welding or bolting, ensuring that the grounding potential is stably conducted to the earth.

[0142] In practical implementation, a ring-shaped grounding element 331 is installed inside the outlet 140 of pipe 210. The grounding wire 332 is led out from the pre-reserved wire hole in the side wall of pipe 210 and connected to the external grounding stake. When the electric field generating mechanism 300 is working, a uniform electric field is formed between the grounding element 331 and the high-potential discharge structure 322 along the extension direction of outlet 140. The charged welding slag moves along the extension direction of outlet 140 under the drive of the electric field force, avoiding the welding slag from being unable to be extracted from outlet 140 due to uneven electric field distribution at outlet 140.

[0143] The ring-shaped grounding element 331 of this application, through its circumferential equipotential design, makes the electric field lines radially and uniformly distributed at the outlet 140, effectively eliminating the electric field blind zone.

[0144] Through the above technical solution, this application solves the problem of uneven electric field distribution caused by traditional single-point grounding, so that the charged welding slag is subjected to uniform electric field force at the outlet 140, avoiding welding slag retention caused by insufficient local electric field strength.

[0145] refer to Figure 2 and Figure 7 In some embodiments, the housing 100 is a metal shell, and the pipe 210 is a metal tube. The welding dust removal equipment may also include a second insulating element 400, which is disposed between the grounding element 331 and the inner wall of the metal tube. The second insulating element 400 is used to insulate the grounding element 331 from the metal tube, and neither the grounding element 331 nor the grounding wire 332 makes conductive contact with the metal shell.

[0146] The metal shell refers to an outer shell made of metal materials, specifically aluminum alloy or stainless steel. The metal material provides structural strength and forms electromagnetic shielding. The metal pipe refers to a metal pipe 210 connected to the shell 100. It can be made of the same material as the shell 100 to achieve structural consistency.

[0147] The second insulating component 400 refers to an isolation component with electrical insulation properties, which can be made of polytetrafluoroethylene or ceramic materials. Its function is to block the conductive path between the grounding component 331 and the metal tube.

[0148] In practical implementation, the metal shell and the metal tube form a continuous conductive structure, and the grounding element 331 is isolated from the inner wall of the metal tube by the second insulating element 400. The second insulating element 400 can be sleeved on the inner wall surface of the metal tube. The grounding element 331 is configured as an annular interlayer surrounding the inner wall of the pipe 210, and the grounding element 331 can be fixed to the inner wall surface of the metal tube by interference fit. One end of the grounding wire 332 is welded to the outside of the grounding element 331, and the other end extends to the outside of the pipe 210 through the hole reserved in the second insulating element 400. The metal shell and the metal tube are connected by welding, and the grounding wire 332 avoids contact with the metal shell during its extension.

[0149] This solution achieves physical isolation between the grounding component 331 and the metal tube through the second insulating component 400, effectively avoiding interference from the metal casing 100 on the electric field distribution.

[0150] Through the above technical solution, this application achieves electrical isolation between the grounding component 330 and the housing 100, ensuring a stable and controllable direction of the electric field force. The grounding component 331 maintains a stable low potential under insulation protection, ensuring the directional movement of charged welding slag under the action of the electric field force, thereby improving dust removal efficiency.

[0151] This application embodiment also provides a welding apparatus, which may include a body and the aforementioned welding dust removal equipment. The body may include a welding head, disposed outside the housing 100 and facing the second inlet 130.

[0152] The welding apparatus provided in this application embodiment can improve the efficiency of welding slag removal by using the above-mentioned welding dust removal equipment. Furthermore, since the welding head is located outside the welding dust removal equipment, the probability of the welding head being contaminated or damaged by welding slag can be reduced, thereby improving the durability and service life of the welding head, and thus extending the service life of the welding apparatus.

[0153] In some embodiments, the welding dust removal equipment provided in this application can be used for dust removal during the welding process of battery cells and tabs, wherein the battery can supply power to electrical devices.

[0154] In some embodiments, the electrical equipment can be a vehicle or an energy storage device. The vehicle can be a new energy vehicle, such as a pure electric vehicle (PEV / BEV), a range-extended electric vehicle (REEV), a hybrid electric vehicle (HEV), or a fuel cell electric vehicle. The vehicle can also be any vehicle with a battery.

[0155] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0156] It should be noted that phrases such as "in specific implementations," "in some embodiments," "in this embodiment," and "exemplarily" in the specification indicate that the described embodiments may include specific features, structures, or characteristics, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0157] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0158] It should be readily understood that the terms “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0159] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0160] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A welding fume extraction apparatus characterized by, include: The housing (100) includes a receiving cavity (110) and has a first inlet (120), a second inlet (130) and an outlet (140) communicating with the receiving cavity (110). The first inlet (120) and the second inlet (130) are arranged opposite to each other along a first direction. The first inlet (120) is used to allow welding slag to enter the receiving cavity (110), and the second inlet (130) is used to allow laser light from outside the housing (100) to pass through the receiving cavity (110) and exit from the first inlet (120). A negative pressure mechanism (200) is connected to the outlet (140). The negative pressure mechanism (200) is used to extract the welding slag in the receiving cavity (110) from the receiving cavity (110) by the negative pressure formed in the receiving cavity (110). An electric field generating mechanism (300) is disposed in the receiving cavity (110). The electric field generating mechanism (300) is used to apply an electric field force to move the welding slag in the receiving cavity (110) toward the outlet (140).

2. The welding fume extraction apparatus of claim 1, wherein The electric field generating mechanism (300) includes: A fixing component (310) is disposed on the inner wall of the housing (100); A generating component (320) is connected to the fixing component (310) and is used to charge the welding slag in the receiving cavity (110); A grounding assembly (330) is disposed on the side of the outlet (140) opposite to the receiving cavity (110); The potential of the generating component (320) is higher than that of the grounding component (330) to form an electric field force along the generating component (320) to the grounding component (330).

3. The welding fume extraction apparatus of claim 2, wherein The generating component (320) includes: The back plate (321) is connected to the fixing assembly (310); The power supply is electrically connected to the back plate (321); A discharge structure (322) is disposed on the side of the back plate (321) facing away from the power source. The discharge structure (322) is used to discharge to the welding slag under the action of the power source.

4. The welding fume extraction apparatus of claim 2, wherein The electric field generating mechanism (300) also includes a first insulating element (323); The first insulating member (323) is disposed between the fixing component (310) and the generating component (320), and the first insulating member (323) is used to insulate the fixing component (310) and the generating component (320) from each other.

5. The welding fume extraction apparatus of claim 2, wherein The fixing component (310) includes: A bracket (311) is fixed to the inner wall of the housing (100); The rotating shaft (312) is rotatably connected at one end to the bracket (311) and at the other end to the generating component (320); The rotating shaft (312) is used to drive the generating component (320) to rotate in order to adjust the direction of the electric field force.

6. The welding fume extraction apparatus of claim 5, wherein The fixing component (310) also includes a connecting plate (313); The connecting plate (313) includes a connecting part (3131) and a planar part (3132) that are connected to each other. The connecting part (3131) is connected to the rotating shaft (312), and the planar part (3132) is connected to the generating component (320).

7. The welding dust removal equipment according to claim 2, characterized in that, The negative pressure mechanism (200) includes: The pipe (210) is connected at one end to the environment outside the receiving cavity (110) and at the other end to the outlet (140); A negative pressure generating structure (220) is disposed in the pipe (210) to generate negative pressure in the pipe (210) and the receiving cavity (110); A portion of the grounding assembly (330) is disposed inside the pipe (210) on the side facing the outlet (140), and another portion extends to the outside of the pipe (210) and is grounded.

8. The welding fume extraction apparatus of claim 7, wherein The grounding component (330) includes: A grounding element (331) is disposed on the inner wall of the pipe (210) and near the outlet (140); The grounding wire (332) is electrically connected at one end to the grounding component (331) and extends to the outside of the pipe (210) and is grounded at the other end.

9. The welding fume extraction apparatus of claim 8, wherein, The housing (100) is a metal housing, and the pipe (210) is a metal pipe; The welding dust removal equipment also includes a second insulating component (400), which is disposed between the grounding component (331) and the inner wall of the metal pipe. The second insulating component (400) is used to insulate the grounding component (331) from the metal pipe, and neither the grounding component (331) nor the grounding wire (332) makes conductive contact with the metal shell.

10. The welding fume extraction apparatus of any of claims 1-9, wherein, The electric field generating mechanism (300) is positioned close to the first inlet (120) relative to the second inlet (130), and the electric field generating mechanism (300) and the outlet (140) are arranged at intervals along a second direction, which intersects with the first direction.

11. The welding fume extraction apparatus of any of claims 1-9, wherein, The extension direction of the outlet (140) forms an angle with the first direction, the angle being greater than 0° and less than or equal to 90°.

12. The welding fume extraction apparatus of any of claims 1-9, wherein, Also includes: A pressure block (500) is disposed on the outer surface of the housing (100) and at the first inlet (120). The pressure block (500) has a first through hole communicating with the first inlet (120). The pressure block (500) is used to press the workpiece to be welded.

13. A welding device characterized by, It includes the body and the welding dust removal equipment as described in any one of claims 1 to 12; The body includes a welding head, which is disposed outside the housing and facing the second inlet.

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