Lithium battery tab welding dust removal device

Abstract

The utility model discloses a lithium battery pole lug welding dust collector, including control assembly, ultrasonic welding head, dust removal subassembly, and mobile assembly, control assembly one side and fixed plate all are provided with ultrasonic welding head, and control assembly sets up on the fixed plate, and the fixed plate is linked with mobile assembly through the connecting plate, and the side of ultrasonic welding head is provided with dust removal subassembly. The utility model improves the welding quality, guarantees the battery safety through the dust removal processing before and after welding, and its flexible mobile assembly increases the applicability, and the reasonable structure layout realizes the automation operation and promotes the work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of lithium-ion battery manufacturing equipment technology, specifically to a dust removal device for lithium battery tab welding. Background Technology

[0002] With the rapid increase in demand for lithium-ion batteries from consumer electronics, energy storage systems, power tools, and other fields, the automation, yield, and consistency of battery production lines have become key indicators. In the assembly of various battery types, such as pouch, cylindrical, and prismatic, the ultrasonic welding process of the tabs (also known as current collector tabs) is the core link connecting the cell electrode (copper foil / aluminum foil composite electrode) to the external conductive current collector.

[0003] 1. The criticality of electrode tab welding

[0004] The tabs are typically made of nickel strip and copper foil as the negative electrode, while aluminum strip and aluminum foil are connected as the positive electrode using ultrasonic welding. Ultrasonic energy generates high-frequency vibrations at the contact surface between the welding head and the tabs, causing the metal interface to be locally heated, plastically deformed, and diffused together.

[0005] Welding quality directly affects the battery's internal resistance, consistency, and cycle life. Any poor solder joint, false solder joint, or incomplete bonding between interfaces will lead to increased contact resistance, and may even cause localized overheating or uneven heating during high-rate discharge or overcharging.

[0006] 2. Sources and impacts of surface contamination

[0007] During the electrode coating and slitting process, trace amounts of dust and particulate residues inevitably occur at the edges or welding areas of the positive and negative electrode active materials. These materials include metal oxides, lithium carbonate, binders, and conductive agents, which, after adhering to the area to be welded on the electrode tabs, become "insulators" or "semiconductors" impurities that hinder electron flow.

[0008] During welding, these impurities are easily "pressed" into the welding interface by high-frequency vibration, resulting in weld sticking, open welds, or insufficient "undercut". On the other hand, residual particles will generate "flying dust" under vibration and slight misalignment, which will contaminate the ultrasonic welding head and accelerate the wear of the welding head.

[0009] 3. Insufficient existing technology

[0010] Currently, most lithium battery production lines rely solely on electrostatic dust removal brushes or manual wiping for pre-welding cleaning of the electrode tabs. This method is inefficient and cannot guarantee the cleanliness and consistency of the area. Some lines use air-blowing dust removal, but compressed air often carries rust or moisture, causing the blown-off dust to float to other critical parts of the production line, resulting in secondary pollution. There is a lack of online dust removal solutions that specifically target the welding area and balance the travel speed of the flexible electrode sheets with thorough dust removal.

[0011] In summary, to overcome the problems of incomplete cleaning before electrode welding, poor welding, and large quality fluctuations in the existing technology, there is an urgent need for a high-efficiency, online, and non-secondary-pollution electrode welding dust removal device to improve welding yield and battery consistency. Utility Model Content

[0012] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a dust removal device for welding lithium battery tabs. By removing dust before and after welding, the device can improve welding quality and ensure battery safety. Its flexible moving components increase applicability, and its reasonable structural layout enables automated operation and improves work efficiency.

[0013] To achieve the above objectives, this utility model is implemented through the following technical solution: a lithium battery tab welding dust removal device, comprising a control component, an ultrasonic welding head, a dust removal component, and a moving component. An ultrasonic welding head is provided on one side of the control component and on a fixed plate. The control component is mounted on the fixed plate, and the fixed plate is connected to the moving component through a connecting plate. A dust removal component is provided on the side of the ultrasonic welding head.

[0014] Preferably, the dust removal assembly includes a suction pipe support, a suction pipe, a first connecting block support rod, and a support base. The suction pipe is mounted on the suction pipe support, and the suction pipe support is mounted on the support rod via the first connecting block. The support rod is mounted on a fixed plate.

[0015] Preferably, the movable component includes a second connecting block, a linear module, a slide rail mounting plate, a slide rail, and a module dust cover. The second connecting block is disposed at the bottom of the connecting plate and slides in a sliding fit with the slide rail. The slide rail is mounted on the slide rail mounting plate, and a linear module is disposed between the slide rails. A module dust cover is disposed on the outside of the linear module.

[0016] This utility model has the following beneficial effects:

[0017] 1. Improve welding quality: By performing dust removal treatment on the welding area before and after welding, dust and tiny welding slag are effectively removed, avoiding impurities from affecting the welding effect and improving the welding quality of lithium battery tabs.

[0018] 2. Ensure battery safety: Secondary dust removal can prevent tiny welding slag residues from remaining on the electrode sheets, reducing the risk of safety hazards caused by short circuits and other problems, and improving the safety and reliability of lithium batteries.

[0019] 3. Flexible movement: The movable components allow the device to move flexibly according to welding requirements, adapting to welding of electrode tabs in different positions, thus increasing the applicability and flexibility of the device.

[0020] 4. Reasonable structure: The components are arranged in a reasonable manner. The control components, ultrasonic welding head, dust removal components and moving components work together to realize the automated welding and dust removal process and improve work efficiency. Attached Figure Description

[0021] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments;

[0022] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] Reference Figure 1 The specific embodiment adopts the following technical solution: a lithium battery tab welding dust removal device, including a control component 1, an ultrasonic welding head 2, a dust removal component 3, and a moving component 4. The ultrasonic welding head 2 is provided on one side of the control component 1 and on the fixed plate 5. The control component 1 is set on the fixed plate 5. The fixed plate 5 is connected to the moving component 4 through a connecting plate 6. The dust removal component 3 is provided on the side of the ultrasonic welding head 2.

[0025] It is worth noting that the dust removal component 3 includes a suction pipe support 31, a suction pipe 32, a first connecting block 33, a support rod 34, and a support base 35. The suction pipe 32 is provided on the suction pipe support 31, and the suction pipe support 31 is set on the support rod 34 through the first connecting block 33. The support rod 34 is set on the fixing plate 5.

[0026] In addition, the movable component 4 includes a second connecting block 41, a linear module 42, a slide rail mounting plate 43, a slide rail 44, and a module dust cover 45. The second connecting block 41 is disposed at the bottom of the connecting plate 6 and slides the slide rail 44. The slide rail 44 is mounted on the slide rail mounting plate 43. The linear module 42 is disposed between the slide rails 44, and a module dust cover 45 is disposed on the outside of the linear module 42.

[0027] The working principle of this specific implementation is as follows: Electrode positioning: The electrode is conveyed by a conveyor roller, and a sensor positions the welding area of ​​the electrode to the welding position. Pre-dust removal: Before welding, the control component activates the dust removal component, and the suction pipe performs a first dust removal treatment on the welding area to remove dust and other impurities. Welding operation: After pre-dust removal, the control component controls the ultrasonic welding head to weld the welding area of ​​the electrode. Secondary dust removal: After welding, the dust removal component restarts, and the suction pipe performs a secondary dust removal on the welded area to prevent tiny weld slag generated by the high-frequency vibration of the welding head from remaining on the electrode, which could cause short circuits or other safety hazards. Position movement: The linear module of the moving component drives the second connecting block to slide on the slide rail, moving the fixed plate and the control component, ultrasonic welding head, and dust removal component on the fixed plate to adapt to welding requirements at different positions.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A dust removal device for welding lithium battery tabs, characterized in that, It includes a control component (1), an ultrasonic welding head (2), a dust removal component (3), and a moving component (4). The ultrasonic welding head (2) is provided on one side of the control component (1) and on the fixed plate (5). The control component (1) is set on the fixed plate (5). The fixed plate (5) is connected to the moving component (4) through a connecting plate (6). The dust removal component (3) is provided on the side of the ultrasonic welding head (2).

2. The lithium battery tab welding dust removal device according to claim 1, characterized in that, The dust removal assembly (3) includes a suction pipe support (31), a suction pipe (32), a first connecting block (33), a support rod (34), and a support base (35). The suction pipe support (31) is provided with a suction pipe (32), and the suction pipe support (31) is set on the support rod (34) through the first connecting block (33). The support rod (34) is set on the fixed plate (5).

3. The lithium battery tab welding dust removal device according to claim 1, characterized in that, The moving component (4) includes a second connecting block (41), a linear module (42), a slide rail mounting plate (43), a slide rail (44), and a module dust cover (45). The second connecting block (41) is located at the bottom of the connecting plate (6). The second connecting block (41) is slidably engaged with the slide rail (44). The slide rail (44) is mounted on the slide rail mounting plate (43). The linear module (42) is arranged between the slide rails (44). The linear module (42) is provided with a module dust cover (45) on its exterior.

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