Dust removal device for ultrasonic welding of battery tabs

Abstract

The utility model discloses a dust removal device for ultrasonic welding of battery tabs. The dust removal device comprises a dust removal cover and a dust baffle, a welding head groove capable of containing a welding head is formed in the dust removal cover, a through hole is formed in the side face of the dust removal cover and used for being connected with a dust suction pipe, and the dust removal cover can synchronously ascend and descend along with the welding head. The dust baffle is used for isolating the welding area from the diaphragm area and comprises a first component and a second component vertically connected with the first component, the first component can move up and down relative to the battery tray, and the second component can move left and right relative to the first component; the dust baffle is matched with the dust removal cover in shape, and the dust baffle and the dust removal cover can form a closed cavity. When the welding head ascends and descends, the dust removal cover ascends and descends synchronously along with the welding head, on this basis, the dust baffle can move within a small range in the up-down dimension and the left-right dimension, airflow enters the dust removal cover from the outside of the dust baffle and flows out of the dust suction pipe, and dust is effectively prevented from splashing to a diaphragm area during welding.

Description

Technical Field

[0001] This utility model relates to the technical field of battery tab welding equipment, and more specifically to a dust removal device for ultrasonic welding of battery tabs. Background Technology

[0002] In the manufacturing process of lithium batteries, ultrasonic welding of the electrode tabs is generally performed. The ultrasonic equipment generates dust during the welding process. If not properly controlled, the dust may fall into the separator, resulting in disadvantages such as high short circuit rate and large self-discharge, increasing safety risks.

[0003] Currently, most ultrasonic welding equipment for lithium batteries uses vacuum dust collection. However, the up-and-down movement of the welding head prevents the dust collection hood from sealing effectively, resulting in reduced dust collection efficiency. To enhance dust collection, the dust collection air velocity is usually increased. However, excessively increasing the dust collection air velocity can cause vibration of the electrode connecting plates or protective plates, leading to poor welding.

[0004] Chinese utility model patent document (application number 202320560304.8) discloses a dust removal device for ultrasonic welding of battery tabs. The blowing component of the dust removal device can blow positive pressure airflow toward the dust generation point and blow the dust into the suction component. At the same time, since the input end below the suction component is under negative pressure and there is a gap in the space above, downward airflow can prevent dust from escaping. Meanwhile, the downward airflow can counteract the upward suction force to prevent the welding part from shaking, so that increasing the dust removal air velocity will not affect the welding performance.

[0005] Although the above technical solution effectively solved the problem of increased wind speed interference, the inventors found in practice that it was still difficult to solve the problem of dust escaping to both diaphragms.

[0006] There is an urgent need to solve the problem of dust diffusion to the diaphragm while maximizing the dust removal air velocity. Utility Model Content

[0007] Technical problem to be solved by the utility model

[0008] In view of this, the purpose of this utility model is to provide a dust removal device for ultrasonic welding of battery tabs, which effectively solves the problem of dust entering the diaphragm during the welding process by adopting a follow-type sealing cover.

[0009] Technical solution and its beneficial effects

[0010] To achieve the above objectives, this utility model provides the following technical solution:

[0011] This utility model discloses a dust removal device for ultrasonic welding of battery tabs, comprising a dust removal hood and a dust baffle.

[0012] The dust removal hood is equipped with a welding head groove that can accommodate the welding head, and a through hole for connecting a dust suction pipe. The dust removal hood can be raised and lowered synchronously with the welding head.

[0013] The dust baffle is used to isolate the welding area from the separator area, and includes a first component and a second component connected to the first component. The first component can move up and down relative to the battery tray, and the second component can move left and right relative to the first component.

[0014] The shape of the dust baffle is adapted to the shape of the dust collector hood, and the two can form a sealed cavity.

[0015] Through the coordinated operation of the dust hood and dust baffle, the dust hood can rise and fall synchronously with the welding head when the welding head is raised and lowered. On this basis, the dust baffle can move within a small range in both vertical and horizontal dimensions, so that the dust hood and dust baffle form a sealed cavity. The dust baffle isolates the welding area from the diaphragm area, and the airflow enters the dust hood from the outside of the dust baffle and flows out from the dust suction pipe, effectively preventing dust from splashing into the diaphragm area during welding.

[0016] Furthermore, the welding head groove constructed on the dust removal hood is a U-shaped groove.

[0017] Furthermore, the suction pipe is equipped with a suction pipe clamp, which is fixedly connected to the welding head. During welding, the welding head rises and falls, which synchronously drives the suction pipe clamp to rise and fall. In turn, the suction pipe clamp drives the suction pipe to rise and fall synchronously, and the dust cover rises and falls synchronously with the rise and fall of the suction pipe.

[0018] The dust hood's vertical position is adjusted using a suction pipe clamp. Since the clamp is installed at the welding station, the installation position automatically lowers during welding, making it convenient, quick, stable, and providing a good seal.

[0019] Furthermore, the battery tray is provided with a first pin, and the first component is provided with a first waist hole corresponding to the first pin, and the first component can move up and down along the first pin through the first waist hole.

[0020] Furthermore, the battery tray has two first pins arranged side by side, and the first component has first waist holes corresponding to the two pins. The first component can move up and down along the first pins through the first waist holes.

[0021] Furthermore, the first component is provided with a second pin, and the second component is provided with a second waist hole, through which the second component can move left and right along the second pin.

[0022] Furthermore, the second component is divided into left and right parts, each of which is constructed with a second waist hole. The first component is constructed with a second pin corresponding to the second waist hole. Both the left and right parts of the second component can move left and right along the second pin through the second waist hole.

[0023] Furthermore, the second component has slots on both its left and right sides.

[0024] The dust baffle has slots on both sides to ensure sufficient air intake speed while performing negative pressure dust removal on the diaphragm areas on both sides, further improving the dust removal effect.

[0025] Furthermore, dust stickers are affixed to the left and right sides of the second component.

[0026] When the tool is working, the airflow outside the dust baffle flows into the dust baffle due to negative pressure, which may cause the original dust in the diaphragm area to disperse. Adding dust stickers to both sides of the dust baffle can prevent the diffusion of large dust particles that are difficult to escape due to insufficient wind speed, and can also reduce dust splashing in the diaphragm area.

[0027] Furthermore, the dust removal device also includes an air blowing pipe, the output end of which is inside the dust baffle, and the input end of which is connected to an external air compressor through an air blowing pipe.

[0028] The input end of the suction pipe is located inside the dust removal hood, and the other end is connected to an external dust removal machine.

[0029] The suction pipe has a higher air velocity than the blowing pipe, creating negative pressure within the dust baffle cavity. The side slots suction the diaphragm, drawing in small dust particles while larger particles adhere through the dust sticker, effectively solving the diaphragm dust problem. The dust baffle only has ventilation openings at the bottom, allowing airflow to move from the bottom to the dust hood, reducing interference with airflow direction. This ensures stable dust flow during welding, minimizing dust escape and improving welding yield.

[0030] In addition to the purposes, features, and effects described above, this utility model has other purposes, features, and effects. The present utility model will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall dust removal equipment according to an embodiment of the present invention;

[0032] Figure 2 This is an exploded view of the dust collector hood and dust baffle according to an embodiment of the present invention.

[0033] Figure 3 This is a schematic diagram of a dust baffle according to an embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of a dust removal hood according to an embodiment of the present invention.

[0035] The following are the labels in the diagram: 1. Suction pipe, 2. Dust hood, 21. Welding head groove, 3. Dust baffle, 31. First component, 32. Second component, 4. Suction pipe clamp, 5. Airflow pipe, 6. Welding head, 7. Battery, 8. Battery tray, 9. First pin, 10. First waist hole, 11. Airflow pipe, 12. Groove, 13. Dust sticker, 14. Second pin, 15. Second waist hole. Detailed Implementation

[0036] To enable those skilled in the art to better understand this technical solution, the technical solution of this utility model will be clearly and completely described below in conjunction with the accompanying drawings and embodiments.

[0037] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the disclosed technical content. Furthermore, terms such as "upper," "lower," "left," "right," "top," "bottom," "first," and "second" used in this specification are merely for clarity and not intended to limit the scope of implementation. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0038] In current lithium battery ultrasonic welding dust removal devices that use vacuum suction, the inventors have found that the up-and-down movement of the welding head makes it difficult to effectively seal the dust removal hood, allowing dust to easily diffuse into the diaphragm area, resulting in unsatisfactory dust removal performance. The main idea of ​​this invention is to adopt a following-type sealing hood, where the dust removal hood rises and falls synchronously with the welding head, ensuring a good seal between the dust removal hood and the dust baffle during operation, effectively preventing dust from diffusing into the diaphragm area.

[0039] refer to Figures 1 to 4 As shown in the figure, a dust removal device for ultrasonic welding of battery tabs according to an embodiment of the present invention includes a dust removal hood 2 and a dust baffle 3; the dust removal hood 2 is provided with a welding head groove 21 for accommodating the welding head 6, preferably the welding head groove 21 is a U-shaped groove, the side of the dust removal hood 2 is provided with a through hole for connecting a dust suction pipe 1, and the dust removal hood 2 can be raised and lowered synchronously with the welding head 6, that is, when the welding head is raised and lowered, the dust removal hood can be raised and lowered synchronously with the welding head.

[0040] The dust baffle 3 is used to isolate the welding area from the diaphragm area. It includes a first component 31 and a second component 32 that is perpendicularly connected to the first component 31. The first component 31 can move up and down relative to the battery tray 8, and the second component 32 can move left and right relative to the first component 31.

[0041] The dust baffle 3 is installed on the battery tray 8. On the one hand, the dust baffle 3 isolates the welding area from the separator area, and on the other hand, it can fix the battery and ensure the battery position is accurate.

[0042] The shape of the dust baffle 3 is adapted to the shape of the dust collector hood 2, and the two can form a sealed cavity.

[0043] The dust hood and dust baffle work together. The dust baffle can move within a small range in both vertical and horizontal dimensions, forming a sealed cavity. The dust baffle isolates the welding area from the diaphragm area. Airflow enters the dust hood from the outside of the dust baffle and flows out from the suction pipe, effectively preventing dust from splashing onto the diaphragm area during welding.

[0044] In some embodiments, a suction pipe clamp 4 is provided at the top of the suction pipe 1. The suction pipe clamp 4 is fixedly connected to the welding head 6. When the welding fixture is working, the welding head 6 rises and falls, which synchronously drives the suction pipe clamp 4 to rise and fall. In turn, the suction pipe clamp 4 drives the suction pipe 1 to rise and fall synchronously. The dust cover 2 rises and falls synchronously with the rise and fall of the suction pipe 1.

[0045] The position of the dust cover 2 in the up and down direction is adjusted by the suction pipe clamp 4. At the same time, since the clamp is installed on the welding station, the installation position automatically descends during welding, which is convenient, quick, stable, and has a good sealing effect.

[0046] The battery tray 8 is provided with a first pin 9, and the first component 31 is provided with a first slot 10 corresponding to the first pin 9. The first component 31 can move up and down along the first pin 9 through the first slot 10; or...

[0047] The battery tray 8 has a first waist hole 10, and the first component 31 has a first pin 9 corresponding to the first waist hole 10. The first component 31 can move up and down along the first waist hole 10 via the first pin 9.

[0048] Preferably, the battery tray 8 has two first pins 9 arranged side by side, and the first component 31 has first waist holes 10 corresponding to the two first pins 9, allowing the first component 31 to move up and down along the first pins 9 through the first waist holes 10; or...

[0049] The battery tray 8 has two first waist holes 10 arranged side by side, and the first component 31 has a first pin 9 corresponding to the two first waist holes 10. The first component 31 can move up and down along the first waist holes 10 via the first pin 9; or...

[0050] Alternatively, a waist hole and a pin can be constructed on the battery tray 8, and the first component 31 can be constructed with a corresponding pin and a waist hole, which can also realize the vertical movement of the first component 31 relative to the battery tray 8.

[0051] In some embodiments, the first component 31 is provided with a second pin 14, and the second component 32 is provided with a second waist hole 15, and the second component 32 can move left and right along the second pin 14 through the second waist hole 15.

[0052] Preferably, the second component 32 is divided into left and right parts, each of which is constructed with a second waist hole 15. The first component 31 is constructed with a second pin 14 corresponding to the second waist hole 15. Both the left and right parts of the second component 32 can move left and right along the second pin 14 through the second waist hole 15.

[0053] After the waist hole moves relative to the pin, fasteners can be used to fix the pin if necessary to prevent relative movement between the waist hole and the pin, so that the tooling remains stable.

[0054] The second component 32 has slots 12 on its left and right sides, preferably the slots 12 are strip-shaped slots.

[0055] The dust baffle 3 has slots on both sides to ensure sufficient air intake speed while performing negative pressure dust removal on the diaphragm areas on both sides, further improving the dust removal effect.

[0056] Dust stickers 13 are affixed to the left and right sides of the second component 32.

[0057] When the tool is working, the airflow outside the dust baffle 3 flows into the dust baffle due to the negative pressure, which may cause the original dust in the diaphragm area to disperse. Adding dust stickers to both sides of the dust baffle can prevent the diffusion of large dust particles that are difficult to escape due to insufficient wind speed, and can also reduce dust splashing in the diaphragm area.

[0058] The dust removal device also includes an air blowing pipe 11, the output end of which is inside the dust baffle 3, and the input end of which is connected to an external air compressor through an air blowing pipe 5.

[0059] The input end of the suction pipe 1 is located inside the dust removal hood 2, and the other end is connected to an external dust removal machine.

[0060] The suction pipe has a higher air velocity than the blowing pipe, creating negative pressure within the dust baffle cavity. The side slots suction the diaphragm, drawing in small dust particles while larger particles adhere through the dust sticker, effectively solving the diaphragm dust problem. The dust baffle only has ventilation openings at the bottom, allowing airflow to move from the bottom to the dust hood, reducing interference with airflow direction. This ensures stable dust flow during welding, minimizing dust escape and improving welding yield.

[0061] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. If any person skilled in the art, inspired by this description, designs a similar structure to the present invention without departing from its inventive spirit, such design shall fall within the protection scope of the present invention.

Claims

1. A dust removal device for ultrasonic welding of battery tabs, characterized in that, Includes a dust hood (2) and a dust baffle (3); The dust cover (2) is provided with a welding head groove (21) that can accommodate the welding head (6), and the dust cover (2) is provided with a through hole for connecting the suction pipe (1). The dust cover (2) can be raised and lowered synchronously with the welding head (6). The dust baffle (3) is used to separate the welding area from the diaphragm area. It includes a first component (31) and a second component (32) connected to the first component (31). The first component (31) can move up and down relative to the battery tray (8), and the second component (32) can move left and right relative to the first component (31). The shape of the dust baffle (3) is adapted to the shape of the dust hood (2), and the two can form a sealed cavity.

2. The dust removal device for ultrasonic welding of battery tabs according to claim 1, characterized in that, The welding head groove (21) constructed on the dust removal hood (2) is a U-shaped groove.

3. The dust removal device for ultrasonic welding of battery tabs according to claim 2, characterized in that, The suction pipe (1) is equipped with a suction pipe clamp (4), which is fixedly connected to the welding head (6). The welding head (6), suction pipe clamp (4), suction pipe (1) and dust cover (2) move up and down synchronously.

4. The dust removal device for ultrasonic welding of battery tabs according to claim 1, characterized in that, The battery tray (8) is provided with a first pin (9), and the first component (31) is provided with a first waist hole (10) corresponding to the first pin (9). The first component (31) can move up and down along the first pin (9) through the first waist hole (10).

5. The dust removal device for ultrasonic welding of battery tabs according to claim 4, characterized in that, The battery tray (8) has two first pins (9) arranged side by side. The first component (31) has a first waist hole (10) corresponding to the two pins (9). The first component (31) can move up and down along the first pins (9) through the first waist hole (10).

6. The dust removal device for ultrasonic welding of battery tabs according to claim 1, characterized in that, The first component (31) has a second pin (14) and the second component (32) has a second waist hole (15). The second component (32) can move left and right along the second pin (14) through the second waist hole (15).

7. The dust removal device for ultrasonic welding of battery tabs according to claim 6, characterized in that, The second component (32) is divided into left and right parts, each of which is constructed with a second waist hole (15). The first component (31) is constructed with a second pin (14) corresponding to the second waist hole (15). Both the left and right parts of the second component (32) can move left and right along the second pin (14) through the second waist hole (15).

8. The dust removal device for ultrasonic welding of battery tabs according to any one of claims 1 to 7, characterized in that, The second component (32) has slots (12) on its left and right sides.

9. The dust removal device for ultrasonic welding of battery tabs according to any one of claims 1 to 7, characterized in that, Dust stickers (13) are affixed to the left and right sides of the second component (32).

10. The dust removal device for ultrasonic welding of battery tabs according to any one of claims 1 to 7, characterized in that, It also includes an air blowing pipe (11), the output end of which is inside the dust baffle (3), and the input end of which is connected to an external air compressor through an air blowing pipe (5). The input end of the suction pipe (1) is located inside the dust removal hood (2), and the other end is connected to an external dust removal machine.

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