Spray gun assembly and battery production equipment

Abstract

The utility model provides a spray gun assembly and battery production equipment, and relates to the technical field of battery manufacturing, and the spray gun assembly comprises a plasma spray gun used for spraying plasma jet flow; and the gas spray gun is connected with the plasma spray gun, located on at least one side of the plasma spray gun and used for spraying gas towards the periphery of the plasma jet flow. By arranging the gas spray gun on at least one side of the plasma spray gun, a protective gas curtain can be formed to limit the diffusion range of plasma jet flow, effectively block diffusion of the plasma jet flow, isolate the plasma jet flow from a conductive part, prevent the plasma jet flow from being in contact with a battery pole or other conductive parts, remarkably reduce potential safety hazards such as short circuit and discharge, and improve the service life of the battery. And the safety of the plasma cleaning process is improved. In addition, according to the spray gun assembly, existing equipment does not need to be comprehensively transformed, the implementation threshold and the implementation cost of upgrading and transformation are reduced, and the transformation period is shortened.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and more specifically, to a spray gun assembly and battery production equipment. Background Technology

[0002] During plasma cleaning of batteries, the plasma jet has strong diffusivity and conductivity, easily coming into contact with sensitive conductive components such as battery terminals, leading to short circuits, discharges, or arcing, thus posing serious safety hazards. Related technologies attempt to mitigate this problem by adding an insulating protective layer or adjusting the spray gun position, but these methods have the following shortcomings:

[0003] (1) Adding an extra insulating protective layer will increase the process cost and may affect the cleaning effect.

[0004] (2) Adjusting the position of the spray gun cannot completely prevent the diffusion of the plasma jet, and there is still a risk of contact with conductive parts.

[0005] Therefore, there is an urgent need for a technical solution that can effectively control the diffusion range of plasma jets and prevent them from contacting conductive components without increasing additional costs. Utility Model Content

[0006] In view of this, this application provides a spray gun assembly and battery production equipment that can effectively control the diffusion range of plasma jets and prevent them from contacting conductive parts without increasing additional costs.

[0007] Therefore, the first aspect of this application proposes a spray gun assembly.

[0008] The second aspect of this application proposes a battery manufacturing apparatus.

[0009] In view of this, the first aspect of this application provides a spray gun assembly for a battery cleaning device, the spray gun assembly comprising: a plasma spray gun for ejecting plasma to form a plasma jet; and a gas spray gun connected to the plasma spray gun and located on at least one side of the plasma spray gun for ejecting gas toward the periphery of the plasma jet.

[0010] The spray gun assembly proposed in this application is used in battery cleaning equipment for plasma cleaning of batteries. The spray gun assembly of this application has a gas spray gun disposed on at least one side of the plasma spray gun. The gas spray gun can spray air around the plasma jet to form a protective air curtain, thereby limiting the diffusion range of the plasma jet, effectively blocking its spread, isolating the plasma jet from the battery's conductive components, and preventing the plasma jet from contacting the battery terminals or other conductive components. This significantly reduces safety hazards such as short circuits and discharges, and improves the safety of the plasma cleaning process.

[0011] Furthermore, by directly adding a gas spray gun, the plasma spray gun can be made consistent with the existing structure without the need for an additional insulating protective layer. This eliminates the need for a complete overhaul of the existing equipment, lowers the implementation threshold and upgrade costs, shortens the modification cycle, and improves the implementation efficiency of the technical solution.

[0012] By connecting the gas spray gun to the plasma spray gun, it is easier to control the synchronous movement of the plasma spray gun and the gas spray gun. It is also beneficial to limit the range of the gas spray airflow of the gas spray gun, making the range of the gas sprayed by the gas spray gun easier to control.

[0013] The gas includes at least one of compressed air, compressed argon, compressed helium, compressed nitrogen, and compressed oxygen.

[0014] In any of the above technical solutions, optionally, there are at least two gas spray guns, which are installed on opposite sides of the plasma spray gun.

[0015] In these technical solutions, by setting at least two gas spray guns, the gas flow rate of the gas spray guns can be increased, the blocking effect of the formed air curtain on the plasma jet can be improved, and the isolation effect between the plasma jet and the conductive component can be better.

[0016] Optionally, in any of the above technical solutions, the gas spray gun includes a compressed air spray gun.

[0017] Among these technical solutions, compressed air spray guns are less expensive than spray guns using other gases because air (i.e., the mixture of gases in Earth's atmosphere) is easier to obtain. Furthermore, air has better stability, which meets the requirements of gas spray guns.

[0018] In any of the above technical solutions, optionally, the gas spray gun can slide relative to the plasma spray gun. When the gas spray gun slides, it can move away from or closer to the plasma spray gun to adjust the distance between the gas spray gun and the plasma spray gun.

[0019] In these technical solutions, by adjusting the distance between the gas spray gun and the plasma spray gun, it is possible to adapt to battery terminals or other target components of different shapes or sizes. This allows the position of the gas spray gun to be adjusted according to actual needs, thereby enhancing the adaptability of the spray gun assembly. It can effectively control the diffusion range of the plasma jet without significantly affecting the cleaning effect, thus ensuring the cleaning efficiency and quality of the battery cleaning equipment.

[0020] In any of the above technical solutions, optionally, the gas spray gun can rotate relative to the plasma spray gun to adjust the angle between the central axes of the gas spray gun and the plasma spray gun.

[0021] In these technical solutions, by adjusting the angle of the gas spray gun relative to the plasma spray gun, it is possible to adapt to battery terminals or other target components of different shapes or sizes. This allows the spray angle of the gas spray gun to be adjusted according to actual needs, thereby enhancing the adaptability of the spray gun assembly. It can effectively control the diffusion range of the plasma jet without significantly affecting the cleaning effect, thus ensuring the cleaning efficiency and quality of the battery cleaning equipment.

[0022] Optionally, in any of the above technical solutions, the spray gun assembly further includes: a mounting base on which the plasma spray gun is mounted, a groove provided on the mounting base, a first end of the gas spray gun being slidably connected to the groove, and a second end of the gas spray gun being provided with a nozzle; a guide block slidably mounted in the groove; the first end of the gas spray gun being rotatably mounted on the guide block, and the angle between the central axes of the gas spray gun and the plasma spray gun being adjustable by rotating the guide block.

[0023] In these technical solutions, by setting a mounting base, the gas spray gun and plasma spray gun can be connected into a whole, providing a mounting platform for installing the gas spray gun around the periphery of the plasma spray gun, and facilitating the sliding installation of the gas spray gun relative to the plasma spray gun. Guide blocks guide the sliding of the gas spray gun, ensuring the accuracy of its sliding path. Furthermore, the guide blocks also provide a mounting platform for the rotational installation of the gas spray gun, ensuring that the gas spray gun can be rotated relative to the plasma spray gun.

[0024] In any of the above technical solutions, optionally, the gas spray gun has a first state in which it is arranged parallel to the plasma spray gun. The gas spray gun can rotate 15°-30° from the first state toward the direction closer to the plasma spray gun.

[0025] The gas spray gun can be rotated to a first state where it is parallel to the plasma spray gun, in which case the spray directions of both are the same or parallel. For example, the gas spray gun can be rotated 15°-30° from the first state toward the direction closer to the plasma spray gun.

[0026] Optionally, in any of the above technical solutions, the spray gun assembly further includes: a limiting block, mounted on the mounting base and located on at least one side of the slide groove, for cooperating with the gas spray gun to limit the sliding range of the gas spray gun.

[0027] By setting a limit block, the sliding range of the gas spray gun can be limited, making the gas spray gun slide more smoothly.

[0028] In any of the above technical solutions, optionally, the gas spray gun includes a jet flow channel, and the jet flow channel includes a spray section. An outlet is provided on the outlet side of the spray section, and the flow area of ​​the spray section gradually decreases from the inlet side to the outlet side.

[0029] In these technical solutions, by reducing the flow area of ​​the outlet section (i.e., the ejection section) of the jet channel, a channel structure with a large inlet and a small outlet can be formed. This structure is equivalent to blocking at least part of the area of ​​the ejection outlet, which increases the speed of the gas jet ejected from the gas gun. Furthermore, the shape of the ejected gas jet naturally has a downward tilt angle due to the reduced size of the ejection outlet. This allows the gas jet to exert both dynamic suppression and physical isolation on the plasma jet. Dynamic suppression refers to the downward momentum and pressure difference generated by the gas curtain providing a downward force, acting like an "invisible lid" to directly counteract and offset the natural upward buoyancy of the plasma due to its density difference. Physical isolation refers to the downward-tilted airflow forming a directional flow barrier above the target structure (such as a battery), which can more precisely "blow" the newly injected plasma jet towards the front of the target (the surface that needs cleaning or deposition).

[0030] By reducing the flow area of ​​the jet channel's outlet section, the problem of plasma diffusion to structures such as battery cell electrodes can be blocked more precisely, enabling more effective protection of the target's front side (the surface that needs to be cleaned or deposited).

[0031] Optionally, the spray gun assembly also includes a rotating shaft, through which the first end of the gas spray gun is rotatably mounted on a guide block, so that the gas spray gun can rotate to adjust the angle between the gas spray gun and the plasma spray gun.

[0032] The second aspect of this application discloses a battery production apparatus, including a battery cleaning device for cleaning batteries, the battery cleaning device including the spray gun assembly in any of the above technical solutions.

[0033] The battery production equipment proposed in this application includes a battery cleaning device, which in turn includes the spray gun assembly in any of the above-mentioned technical solutions. Therefore, the battery production equipment has all the beneficial effects of the spray gun assembly in any of the above-mentioned technical solutions, which will not be elaborated here.

[0034] Optionally, in any of the above technical solutions, the battery cleaning equipment further includes: a gas tank connected to the plasma spray gun to supply gas to the plasma spray gun; and an adjustment switch for connecting the gas tank and the gas spray gun to adjust the flow rate and / or pressure of the gas supplied from the gas tank to the gas spray gun.

[0035] In these technical solutions, the parameters of the compressed gas are adjusted by regulating the gas flow rate and pressure, thereby optimizing the formation effect of the protective air curtain and ensuring its effectiveness. This allows the air curtain to effectively limit the diffusion of the plasma jet without affecting the cleaning efficiency. As a result, there is no need to add an additional insulating protective layer, the structure is simple, easy to install and maintain, and the process cost is reduced.

[0036] The plasma spray gun is also connected to a gas tank, allowing the gas spray gun to be connected to existing air compressor tanks on the battery cleaning equipment. This eliminates the need for a separate gas source for the gas spray gun, thus simplifying the structure of the battery cleaning equipment.

[0037] Additional aspects and advantages of this application will become apparent in the following description or may be learned by practice of this application. Attached Figure Description

[0038] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0039] Figure 1 This is one of the structural schematic diagrams of the spray gun assembly in some embodiments of this application;

[0040] Figure 2 This is a second schematic diagram of the structure of the spray gun assembly in some embodiments of this application;

[0041] Figure 3 This is one of the operational state diagrams of the spray gun assembly in some embodiments of this application;

[0042] Figure 4 This is a schematic diagram of the plasma jetting region and the gas jetting region in some embodiments of this application;

[0043] Figure 5 This is the second diagram showing the working state of the spray gun assembly in some embodiments of this application;

[0044] Figure 6 This is the third of several embodiments of the spray gun assembly in operation.

[0045] Figure 7 This is a partial structural diagram of the spray gun assembly in some embodiments of this application;

[0046] Figure 8 This is one of the connection diagrams of the spray gun assembly and the gas tank in some embodiments of this application;

[0047] Figure 9 This is a second schematic diagram showing the connection between the spray gun assembly and the gas tank in some embodiments of this application;

[0048] Figure 10 This is a schematic diagram of the jet flow channel of the spray gun assembly in some embodiments of this application.

[0049] in:

[0050] 1. Plasma spray gun, 2. Gas spray gun, 22. Spray outlet, 24. Gas flow channel, 242. Spray section, 3. Mounting base, 32. Slide groove, 4. Guide block, 5. Gas tank, 6. Adjustment switch, 7. Battery, 72. Conductive component, 8. Plasma spray area, 9. Gas spray area, 10. Rotary shaft, 11. Limit block. Detailed Implementation

[0051] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0052] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0053] In the manufacturing process of batteries (such as lithium batteries), plasma cleaning is required for battery components. During plasma cleaning, the plasma jet has strong diffusivity and conductivity, easily coming into contact with sensitive conductive components such as battery terminals, leading to short circuits, discharges, or arcing, thus posing serious safety hazards. Related technologies attempt to mitigate this problem by adding an insulating protective layer or adjusting the spray gun position, but these methods have the following shortcomings:

[0054] (1) Adding an extra insulating protective layer will increase the process cost and may affect the cleaning effect.

[0055] (2) Adjusting the position of the spray gun cannot completely prevent the diffusion of the plasma jet, and there is still a risk of contact with conductive parts.

[0056] To address the aforementioned technical problems, this application provides a spray gun assembly for use in a battery cleaning device, which performs plasma cleaning on batteries. The spray gun assembly includes a plasma spray gun and a gas spray gun. The gas spray gun is disposed on at least one side of the plasma spray gun and is used to spray gas around the plasma jet to limit its diffusion range. Furthermore, the distance and angle of the gas spray gun relative to the plasma spray gun are adjustable.

[0057] By incorporating a gas spray gun, the diffusion range of the plasma jet can be limited, effectively blocking its spread and isolating it from the battery's conductive components. This prevents the plasma jet from contacting the battery terminals or other conductive parts, significantly reducing safety hazards such as short circuits and discharges, and improving the safety of the plasma cleaning process. By directly adding a gas spray gun, the plasma spray gun's structure is consistent with existing structures, eliminating the need for additional insulation layers. This avoids a complete overhaul of existing equipment, lowering the implementation threshold and upgrade costs, shortening the modification cycle, and improving the implementation efficiency of the embodiment. Adjusting the distance and angle of the gas spray gun relative to the plasma spray gun enhances the adaptability of the spray gun assembly, allowing for more precise control of the protective air curtain's coverage area and improving the protection of conductive components. Adjusting the gas flow rate and pressure effectively controls the diffusion range of the plasma jet without significantly affecting the cleaning effect, ensuring the cleaning efficiency and quality of the spray gun assembly.

[0058] The spray gun assembly in this embodiment is mainly used in battery cleaning equipment. Battery cleaning equipment is primarily used for cleaning target components with conductive structures, such as batteries.

[0059] In the battery pack assembly process, individual cells need to be reliably connected to adjacent cells via pressure strips and adhesive. It is worth noting that the adhesive strength is directly related to the cleanliness of the interface: if contaminants (such as organic matter, oxides, etc.) are present in the pressure strip installation area of ​​the battery cover (i.e., the subsequent adhesive application area), it may lead to poor adhesive wetting and reduced adhesion, ultimately affecting the structural stability and lifespan of the battery pack. Therefore, before the adhesive application process, specific areas of the battery cover must be plasma cleaned. High-energy particles from the plasma bombardment remove surface contaminants and activate the material surface to improve adhesive adhesion. The spray gun assembly of this application can be used to clean the battery cover of the cells to meet the above cleaning requirements.

[0060] The following reference Figures 1 to 10 The present application will describe in detail some embodiments of the spray gun assembly and battery cleaning device.

[0061] like Figure 1 As shown, the first aspect of this application discloses a spray gun assembly for use in a battery cleaning device. The battery cleaning device cleans target structures such as batteries by spraying plasma. The battery cleaning device includes a plasma spray gun 1 for spraying plasma. In this application, a gas spray gun 2 is provided for the plasma spray gun 1, such that the gas spray gun 2 and the plasma spray gun 1 together form the spray gun structure (i.e., spray gun assembly) of the battery cleaning device. The gas spray gun 2 is disposed on at least one side of the plasma spray gun 1 and is used to spray air around the plasma jet, thereby forming a gas layer around the plasma jet to block the diffusion of the plasma jet and limit the diffusion range of the plasma.

[0062] Battery cleaning equipment, also known as plasma surface treatment equipment, is a high-tech device that uses plasma to clean, activate, and coat the surface of an object.

[0063] Among them, the gas spray gun 2 is a structure used to spray gas. The gas sprayed can be air, or other gases, such as inert gases (such as argon, helium, nitrogen, etc.), oxygen, or nitrogen-hydrogen mixtures.

[0064] When the gas spray gun 2 is working, the nozzle of the gas spray gun 2 is directed towards the diffusion area of ​​the plasma jet, so that the area formed by the jetting airflow (such as...) Figure 4 The gas injection region 9 shown is located in the injection region of the plasma jet (e.g., Figure 4 The plasma jet area 8) shown is surrounded by an airflow to form a protective air curtain around the plasma, effectively blocking the diffusion of the plasma jet.

[0065] The plasma spray gun 1 includes a plasma chamber, which may contain a tungsten electrode. When the plasma spray gun 1 is in operation, a mixture of gases such as argon and nitrogen can be introduced into the plasma chamber, and then the mixture is ionized through the tungsten electrode to generate the desired plasma.

[0066] The battery cleaning equipment can be specifically used for cleaning battery 7.

[0067] By providing a gas spray gun 2 on at least one side of the plasma spray gun 1, air can be sprayed around the plasma jet through the gas spray gun 2 to form a protective air curtain, thereby limiting the diffusion range of the plasma jet, effectively blocking the diffusion of the plasma jet, and isolating the plasma jet from conductive components (such as...). Figure 4 The conductive component 72 on the battery 7 prevents the plasma jet from contacting the battery terminals or other conductive components, significantly reducing safety hazards such as short circuits and discharges, and improving the safety of the plasma cleaning process.

[0068] Furthermore, by directly adding the gas spray gun 2, the plasma spray gun 1 can be made consistent with the existing structure without the need for additional insulation protection layers. This eliminates the need for a complete overhaul of the existing equipment, lowers the implementation threshold and upgrade costs, shortens the modification cycle, and improves the implementation efficiency of the embodiment.

[0069] In any of the above embodiments, optionally, as Figure 1 and Figure 2 As shown, the gas spray gun 2 is connected to the plasma spray gun 1.

[0070] In these embodiments, the gas spray gun 2 is directly mounted on the plasma spray gun 1, that is, the gas spray gun 2 and the plasma spray gun 1 are assembled into a single component. Of course, in other embodiments, the gas spray gun 2 may simply be mounted around the plasma spray gun 1, without being assembled into a single unit with the plasma spray gun 1.

[0071] By directly mounting the gas spray gun onto the plasma spray gun 1, it is easier to control the synchronous movement of the plasma spray gun 1 and the gas spray gun 2. It also helps to limit the range of the gas jet from the gas spray gun 2, making the range of the gas jet from the gas spray gun 2 easier to control.

[0072] In any of the above embodiments, optionally, the number of gas spray guns can be set to one or more. Meanwhile, as... Figure 3 , Figure 5 and Figure 6 As shown, two or more gas spray guns 2 can be installed symmetrically relative to the plasma spray gun 1.

[0073] The number of gas spray guns depends on the shape of the gas spray gun 2 and the range of the airflow to be sprayed. At least two gas spray guns 2 can be installed symmetrically or asymmetrically.

[0074] By setting at least two gas spray guns 2, the gas flow rate of the gas spray guns 2 can be increased, the blocking effect of the formed air curtain on the plasma jet can be improved, and the isolation effect between the plasma jet and the conductive parts can be better.

[0075] In any of the above embodiments, the gas spray gun 2 may optionally include a compressed air spray gun.

[0076] In these embodiments, the gas spray gun is specifically a compressed air spray gun, that is, a structure that sprays compressed air. In the design, the air can be compressed, and then the compressed air is supplied to the gas spray gun 2. When the gas spray gun 2 is working, it can spray compressed air to form an air curtain around the plasma jet, thereby blocking the plasma diffusion and limiting the diffusion range of the plasma jet.

[0077] Among these, compressed air spray guns are less expensive than those using other gases because air is readily available. Furthermore, the stability of air is better, meeting the requirements of gas spray gun 2.

[0078] In any of the above embodiments, optionally, as Figure 3 and Figure 5 As shown, the gas spray gun 2 can slide relative to the plasma spray gun 1. When the gas spray gun 2 slides, it can move away from or closer to the plasma spray gun 1 to adjust the distance between the gas spray gun 2 and the plasma spray gun 1.

[0079] In these embodiments, the gas spray gun 2 is slidable relative to the plasma spray gun 1. When the gas spray gun 2 slides, it can move away from or closer to the plasma spray gun 1 to adjust the distance between them. Figure 2 and Figure 3 The gas spray gun 2 is positioned closest to the plasma spray gun 1. Figure 5 For gas spray gun 2 relative Figure 2 or Figure 3 The state after moving outward a certain distance.

[0080] By adjusting the distance between the gas spray gun 2 and the plasma spray gun 1, it is possible to adapt to battery terminals or other target components of different shapes or sizes. This allows the position of the gas spray gun 2 to be adjusted according to actual needs, thereby enhancing the adaptability of the spray gun assembly. It can effectively control the diffusion range of the plasma jet without significantly affecting the cleaning effect, thus ensuring the cleaning efficiency and quality of the battery cleaning equipment for the battery 7.

[0081] Sliding of the gas spray gun 2 refers to the lateral translation of the gas spray gun 2 relative to the plasma spray gun 1, so that the gas spray gun 2 can move away from or closer to the plasma spray gun 1.

[0082] In any of the above embodiments, optionally, as Figure 6 As shown, the gas spray gun 2 can rotate relative to the plasma spray gun 1 to adjust the angle between the central axis of the gas spray gun 2 and the plasma spray gun 1.

[0083] like Figure 6 As shown, the gas spray gun 2 can rotate relative to the plasma spray gun 1 to adjust the angle A between the central axes of the gas spray gun 2 and the plasma spray gun 1. Rotation of the gas spray gun 2 means that the first end (i.e., the mounting end) of the gas spray gun 2 is rotatably connected to the plasma spray gun 1, and the second end (i.e., the end with the nozzle 22) of the gas spray gun 2 can swing relative to the plasma spray gun 1 to adjust the angle between the gas spray gun 2 and the plasma spray gun 1.

[0084] The gas spray gun 2 can slide alone or rotate alone. For example, the gas spray gun 2 can both rotate and slide.

[0085] By adjusting the angle A between the gas spray gun 2 and the plasma spray gun 1, it is possible to adapt to battery terminals or other target components of different shapes or sizes. This allows the spray angle of the gas spray gun 2 to be adjusted according to actual needs, thereby enhancing the adaptability of the spray gun assembly. It can effectively control the diffusion range of the plasma jet without significantly affecting the cleaning effect, thus ensuring the cleaning efficiency and quality of the battery cleaning equipment for the battery 7.

[0086] In any of the above embodiments, optionally, as Figure 2 , Figure 3 and Figure 7 As shown, the spray gun assembly also includes a mounting base 3. The plasma spray gun 1 is mounted on the mounting base 3, and the gas spray gun 2 is also mounted on the mounting base 3. Optionally, the mounting base 3 is provided with a sliding groove 32, the first end of the gas spray gun 2 is slidably connected to the sliding groove 32, and the second end of the gas spray gun 2 is provided with a nozzle 22. The spray gun assembly also includes a guide block 4, which is slidably mounted within the sliding groove 32; the first end of the gas spray gun 2 is rotatably mounted on the guide block 4, and the angle between the central axis of the gas spray gun 2 and the central axis of the plasma spray gun 1 can be adjusted by rotating the guide block 4.

[0087] In these embodiments, the spray gun assembly further includes a mounting base 3. The mounting base 3 is used to mount the plasma spray gun 1. Exemplarily, the mounting base 3 is provided with a groove 32, and the first end (i.e., the mounting end) of the gas spray gun 2 is slidably connected to the groove 32, so that the gas spray gun 2 can slide along the groove 32, thereby adjusting the distance between the gas spray gun 2 and the plasma spray gun 1.

[0088] The first end of the gas spray gun 2 can be directly installed in the slide groove 32, or indirectly installed in the slide groove 32 through a connector (such as a guide block 4). The first end of the gas spray gun 2 is the installation end, and the second end of the gas spray gun 2 is the spraying end with the spray outlet 22.

[0089] Mounting base 3 can be part of plasma spray gun 1, or it can be a separate structure independent of plasma spray gun 1.

[0090] By setting the mounting base 3, the gas spray gun 2 and the plasma spray gun 1 can be connected into a whole, providing an installation platform for installing the gas spray gun 2 on the periphery of the plasma spray gun 1, and making it easier to slide the gas spray gun 2 relative to the plasma spray gun 1.

[0091] The spray gun assembly also includes a guide block 4. The guide block 4 is slidably mounted within the slide groove 32. The first end of the gas spray gun 2 is mounted on the guide block 4. By sliding the guide block 4 within the slide groove 32, the gas spray gun 2 can rotate relative to the slide groove 32. Simultaneously, the gas spray gun 2 is rotatably connected to the guide block 4, and by rotating the gas spray gun 2, the angle between the gas spray gun 2 and the central axis of the plasma spray gun 1 can be adjusted.

[0092] The guide block 4 is used to guide the gas spray gun 2 on the mounting base 3. It can be integrated with the gas spray gun 2 or set up independently of the gas spray gun 2.

[0093] Guided by guide block 4, the sliding of gas spray gun 2 can be guided, ensuring the accuracy of the sliding path of gas spray gun 2. In addition, guide block 4 also provides an installation platform for the rotational installation of gas spray gun 2, ensuring that gas spray gun 2 can be rotated relative to plasma spray gun 1.

[0094] In any of the above embodiments, optionally, the gas spray gun 2 can rotate at an angle greater than or equal to 15° and less than or equal to 30°.

[0095] In these embodiments, the rotation angle of the gas spray gun 2 can be set according to actual needs, but its rotation angle can be set in the range of 15°-30°. By adjusting the angle of the gas spray gun 2, the spray direction of the gas spray gun 2 can be adjusted, thereby adjusting the airflow spray area of ​​the gas spray gun 2. This allows the spray gun structure to better adapt to the spraying needs in different scenarios.

[0096] Optionally, the gas spray gun 2 has a first state in which it is arranged parallel to the plasma spray gun 1 (e.g., Figure 2 , Figure 3 and Figure 5 (As shown in the diagram), the gas spray gun 2 can rotate 15°-30° from the first state toward the direction of the plasma spray gun 1.

[0097] The gas spray gun 2 can be rotated to a first state where it is parallel to the plasma spray gun 1, in which case the spray directions of both are the same or parallel. For example, the gas spray gun 2 can rotate 15°-30° from the first state toward the plasma spray gun 1.

[0098] In any of the above embodiments, the spray gun assembly may optionally include a limiting block 11. The limiting block 11 is mounted on the mounting base 3 and located on at least one side of the slide groove 32. The limiting block 11 is used to cooperate with the gas spray gun 2 to limit the sliding range of the gas spray gun 2.

[0099] The limiting block 11 can be a structure such as a position detection sensor. By setting the limiting block 11, the sliding range of the gas spray gun 2 can be limited, making the sliding of the gas spray gun 2 more stable.

[0100] In any of the above embodiments, optionally, as Figure 10 As shown, the gas spray gun 2 includes a jet flow channel 24, which includes a spray section 242. A spray outlet 22 is provided on the outlet side of the spray section 242, and the flow area of ​​the spray section 242 gradually decreases from the inlet side to the outlet side. Figure 10 The arrows in the diagram indicate the direction of gas flow.

[0101] In these embodiments, the gas spray gun 2 includes a gas jet channel 24. The gas jet channel 24 is a channel for introducing gas and ejecting the gas. The gas jet channel 24 includes an ejection section 242. The ejection section 242 is a structure provided with an outlet 22. The flow area of ​​the ejection section 242 gradually decreases from the inlet side to the outlet side (i.e., the side provided with the outlet 22).

[0102] By reducing the flow area of ​​the outlet section of the jet channel 24, a channel structure with a large inlet and a small outlet can be formed. This structure is equivalent to blocking at least part of the area of ​​the nozzle 22, which increases the speed of the airflow ejected from the gas nozzle 2. Furthermore, the shape of the ejected airflow naturally has a downward tilt angle due to the reduced size of the nozzle 22. This allows the airflow to exert both dynamic suppression and physical isolation on the plasma jet. Dynamic suppression refers to the downward momentum and pressure difference generated by the gas curtain providing a downward force, acting like an "invisible lid" to directly counteract and offset the natural upward buoyancy of the plasma due to its density difference. Physical isolation refers to the downward-tilted airflow forming a directional flow barrier above the target structure (such as battery 7), which can more precisely "blow" the newly injected plasma jet towards the front of the target (the surface that needs cleaning or deposition).

[0103] By reducing the flow area of ​​the outlet section (i.e., ejection section 242) of the jet channel 24, the problem of plasma diffusion to structures such as the battery cell electrode can be blocked more precisely, and the front of the target (the surface that needs to be cleaned or deposited) can be protected more effectively.

[0104] The flow area of ​​the inlet section of the jet flow channel 24 can remain unchanged, and the inlet section of the jet flow channel 24 can also be set with a variable cross section.

[0105] Optionally, the spray gun assembly also includes a rotating shaft 10, on which the first end of the gas spray gun 2 is rotatably mounted on the guide block 4 via the rotating shaft 10, so that the gas spray gun 2 can rotate to adjust the angle between the gas spray gun 2 and the plasma spray gun 1.

[0106] like Figure 8 and Figure 9 As shown, this application proposes a battery cleaning device, including the spray gun assembly in any of the above embodiments.

[0107] Battery cleaning equipment is used to clean target components, especially those with conductive parts (such as battery 7). Also known as a plasma surface treatment machine, it is a high-tech device that uses plasma to clean, activate, and coat object surfaces.

[0108] The battery cleaning device proposed in this application, since it includes the spray gun assembly in any embodiment of the first aspect, has all the beneficial effects of the spray gun assembly in any embodiment of the first aspect, which will not be repeated here.

[0109] This application discloses a battery production apparatus, including the battery cleaning apparatus of any of the above embodiments. The battery cleaning apparatus includes the spray gun assembly of any of the above embodiments.

[0110] Battery production equipment refers to some of the devices or production lines used in the battery production process, mainly for battery production and processing. The battery production equipment proposed in this application, since it includes the battery cleaning equipment in any of the above embodiments, therefore possesses all the beneficial effects of the battery cleaning equipment in any of the above embodiments, which will not be elaborated further here.

[0111] In any of the above embodiments, optionally, as Figure 8 and Figure 9 As shown, the battery cleaning equipment also includes a gas tank 5 and a regulating switch 6. The plasma spray gun 1 is connected to the gas tank 5. The regulating switch 6 connects the gas tank 5 and the gas spray gun 2 to regulate the flow rate and / or pressure of the gas supplied from the gas tank 5 to the gas spray gun 2.

[0112] In these embodiments, the battery cleaning equipment further includes a gas tank 5. The gas tank 5 is used to store gas for supplying the gas spray gun 2. An adjustment switch 6 is provided between the gas tank 5 and the gas spray gun 2 or on the gas spray gun 2, and the flow rate and / or pressure of the gas in the gas spray gun 2 can be adjusted by adjusting the adjustment switch 6.

[0113] By adjusting the gas flow rate and pressure, the parameters of the compressed gas are adjusted, optimizing the formation effect of the protective air curtain and ensuring its effectiveness. This allows the air curtain to effectively limit the diffusion of the plasma jet without affecting the cleaning efficiency. This eliminates the need for an additional insulating protective layer, resulting in a simple structure that is easy to install and maintain, thus reducing process costs.

[0114] The plasma spray gun 1 is also connected to a gas tank 5, which provides the plasma spray gun 1 with the necessary gas for ionization. For example, the gas tank 5 can be a compressed air tank. This structure allows the gas spray gun 2 to be connected to an existing compressed air tank in the battery cleaning equipment, eliminating the need for a separate gas source for the gas spray gun 2 and simplifying the structure of the battery cleaning equipment.

[0115] Optionally, the flow rate of the gas ejected from the gas nozzle 2 is 0.5 L / min to 1.0 L / min (L / min is the unit of flow rate, representing liters per minute), and the gas pressure is 0.3 MPa to 0.5 MPa. Experiments show that setting the gas flow rate to 0.5 L / min to 1.0 L / min and the gas pressure to 0.3 MPa to 0.5 MPa can effectively limit the diffusion range of the plasma jet.

[0116] When cleaning batteries using a battery cleaning device, first start the device, adjust the position of the spray gun assembly, then turn on the gas spray gun 2 to release compressed airflow and form a protective air curtain; finally, start the plasma jet to begin cleaning; after cleaning is complete, turn off the compressed air spray gun and the battery cleaning device. Alternatively, gas spray gun 2 and plasma spray gun 1 can be turned on simultaneously.

[0117] The following describes a spray gun assembly and a battery cleaning device.

[0118] like Figures 2 to 10 As shown, this embodiment provides a nozzle structure with compressed air protection, including a plasma direct injection nozzle (i.e., plasma nozzle 1) and two compressed air nozzles, which are symmetrically arranged on both sides of the plasma direct injection nozzle. The compressed air nozzles are used to release compressed air jets to form a protective air curtain, limiting the diffusion area of ​​the plasma jet and preventing it from contacting the battery terminals or other conductive parts.

[0119] The plasma cleaning method based on the above nozzle structure includes the following steps:

[0120] Start the battery cleaning equipment and adjust the nozzle position so that the plasma jet is aimed at the area to be cleaned;

[0121] At the same time, the compressed air spray gun is turned on to release the compressed air jet and form a protective air curtain;

[0122] By precisely controlling the airflow velocity and pressure parameters of the compressed air jet, the diffusion range of the plasma jet is controlled to prevent it from contacting the battery terminals or other conductive parts; after cleaning is completed, the compressed air spray gun and battery cleaning equipment are turned off.

[0123] Example Solution 1:

[0124] The spray gun assembly of the battery cleaning equipment includes a plasma direct-injection spray gun and a compressed air spray gun. Compressed air spray guns are symmetrically arranged on both sides of the plasma direct-injection spray gun, and are fixed to the spray gun body via connecting flanges. The nozzles of the compressed air spray guns face the diffusion area of ​​the plasma jet, forming a protective air curtain.

[0125] Plasma direct injection gun: includes a central plasma chamber with a built-in tungsten electrode, and is filled with a mixture of argon and nitrogen (ratio 4:1). The radio frequency power is 13.56MHz (MHz is a unit of frequency, representing megahertz).

[0126] Compressed air spray gun: Dual air channels are formed on both sides of the plasma direct injection gun. The dual air channels are symmetrically distributed on both sides of the plasma chamber, and the center distance is adjustable.

[0127] Angle adjustment mechanism: The nozzle tilt angle of the compressed air spray gun can be continuously adjusted from 15° to 30° by rotating the buckle;

[0128] Gas acceleration module: Compressed air is accelerated through a 0.3mm narrow slit and then enters a flow channel where the flow area first increases and then decreases or the flow area continues to decrease.

[0129] In Example Scheme 1, an asymmetric flow channel cross-section design is adopted to generate a downward component force in the compressed airflow, which counteracts the upward floating tendency of the plasma and solves the problem of floating contamination during the reverse cleaning of battery 7.

[0130] Example 2:

[0131] The nozzle position of the compressed air spray gun can be adjusted according to the position of the battery terminals. By adjusting the flow rate and pressure of the compressed air, the effectiveness of the protective air curtain is ensured. Experiments show that when the compressed air flow rate is 0.5L / min-1.0L / min and the pressure is 0.3MPa-0.5MPa, the diffusion range of the plasma jet can be effectively limited.

[0132] Example Solution 3 - Optimization of Cleaning Method:

[0133] The cleaning method based on the battery cleaning equipment provided in this embodiment may include the following steps:

[0134] ① Start the battery cleaning equipment and adjust the nozzle position;

[0135] ② Turn on the compressed air spray gun to release the compressed air jet and form a protective air curtain;

[0136] ③ Start the plasma jet and begin cleaning;

[0137] ④ After cleaning is complete, turn off the compressed air spray gun and the battery cleaning equipment.

[0138] The spray gun structure and cleaning method provided in this embodiment have the following technical effects:

[0139] By adding compressed air jets to both sides of the plasma direct-injection gun, the nozzle structure of the battery cleaning equipment is redefined. Compressed air jets are added to both sides of the plasma gun 1, and compressed air protects the battery terminals. The protective air curtain formed by the compressed air jets effectively isolates the plasma jet from contact with conductive components, significantly reducing safety hazards such as short circuits and discharges, and improving the safety of the cleaning process.

[0140] Furthermore, by adding compressed air spray guns to both sides of the plasma spray gun 1, no comprehensive modification of the existing equipment is required, reducing the implementation cost of the upgrade. The nozzle structure is compatible with existing battery cleaning equipment, facilitating the upgrade and modification of existing equipment, lowering the implementation threshold, and the compatibility design with existing equipment shortens the modification cycle, improving the implementation efficiency of this embodiment.

[0141] The layout and angle of the compressed air spray gun are adjustable: To adapt to battery terminals or other target components of different shapes or sizes, the layout and nozzle angle of the compressed air spray gun can be adjusted according to actual needs. This can effectively control the diffusion range of the plasma jet without significantly affecting the cleaning effect, ensuring cleaning efficiency and quality.

[0142] By adjusting the flow rate and pressure of compressed air, the compressed air parameters are adjusted, optimizing the formation effect of the protective air curtain. This ensures that it can effectively limit the diffusion of the plasma jet without affecting the cleaning efficiency. This eliminates the need for an additional insulating protective layer, resulting in a simple structure that is easy to install and maintain, thus reducing process costs.

[0143] In this application, the term "multiple" refers to two or more unless otherwise expressly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0144] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The above are merely some embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A spray gun assembly, characterized in that, For use in battery cleaning equipment, the spray gun assembly includes: Plasma spray guns are used to spray plasma to form plasma jets. A gas spray gun, connected to the plasma spray gun and located on at least one side of the plasma spray gun, is used to spray gas toward the periphery of the plasma jet.

2. The spray gun assembly according to claim 1, characterized in that, There are at least two gas spray guns, which are installed on opposite sides of the plasma spray gun.

3. The spray gun assembly according to claim 1, characterized in that, The gas spray gun can slide relative to the plasma spray gun. When the gas spray gun slides, it can move away from or closer to the plasma spray gun to adjust the distance between the gas spray gun and the plasma spray gun.

4. The spray gun assembly according to claim 1, characterized in that, The gas spray gun can rotate relative to the plasma spray gun to adjust the angle between the central axis of the gas spray gun and the central axis of the plasma spray gun.

5. The spray gun assembly according to claim 4, characterized in that, Also includes: Mounting base, the plasma spray gun is mounted on the mounting base, the mounting base is provided with a sliding groove, the first end of the gas spray gun is slidably connected to the sliding groove, and the second end of the gas spray gun is provided with a spray outlet; The guide block is slidably mounted within the groove; The first end of the gas spray gun is rotatably mounted on the guide block. By rotating the guide block, the angle between the central axis of the gas spray gun and the plasma spray gun can be adjusted.

6. The spray gun assembly according to claim 4, characterized in that, The gas spray gun has a first state in which it is arranged parallel to the plasma spray gun, and the gas spray gun can rotate 15°-30° from the first state toward the direction of the plasma spray gun.

7. The spray gun assembly according to claim 5, characterized in that, Also includes: A limiting block, installed on the mounting base and located on at least one side of the slide groove, is used to cooperate with the gas spray gun to limit the sliding range of the gas spray gun.

8. The spray gun assembly according to any one of claims 1 to 7, characterized in that, The gas spray gun includes: The jet flow channel includes an ejection section, and an ejection outlet is provided on the outlet side of the ejection section. The flow area of ​​the ejection section gradually decreases from the inlet side to the outlet side.

9. A battery production equipment, characterized in that, The device includes a battery cleaning apparatus, which includes a spray gun assembly as described in any one of claims 1 to 8.

10. The battery production equipment according to claim 9, characterized in that, The battery cleaning equipment also includes: An air tank is connected to the plasma spray gun to supply air to the plasma spray gun. An adjustment switch is used to connect the gas tank and the gas spray gun to adjust the flow rate and / or pressure of the gas supplied from the gas tank to the gas spray gun.

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