Tab welding device

Abstract

The utility model provides a tab welding device. The tab welding device comprises a welding seat, a welding rod and a welding rod, wherein the welding seat is used for placing a tab connected with an electrode assembly main body and a current collector; the welding head is arranged above the welding seat in a lifting manner, and the welding head is used for welding a tab and a current collecting piece; and the spraying assembly is used for spraying insulating glue to the joint of the tab and the electrode assembly main body. According to the utility model, the problem that the tab is easy to tear in the production process of the secondary battery in the prior art is solved.

Description

Technical Field

[0001] This utility model relates to the field of new energy technology, and more specifically, to an electrode welding device. Background Technology

[0002] Secondary batteries typically consist of a casing and an electrode assembly housed inside the casing. The electrode assembly usually includes tabs and an electrode assembly body. One end of the tab is connected to the electrode assembly body, and the other end is connected to the electrode terminals on the casing via a current collector. During the manufacturing process of secondary batteries, the tabs and current collectors need to be welded together. As the welding head moves towards the welding base to press the tabs and current collectors together, the tabs are subjected to significant pressure and bend downwards. When the tabs are short, tearing can easily occur at the connection between the tab and the electrode assembly body during bending, leading to an increased product defect rate and significant safety hazards during use of the finished electrode assembly.

[0003] As can be seen from the above, there is a problem in the existing technology that the tabs are easily torn during the production of secondary batteries. Utility Model Content

[0004] The main purpose of this invention is to provide a tab welding device to solve the problem that the tabs are easily torn during the production of secondary batteries in the prior art.

[0005] To achieve the above objectives, this utility model provides an electrode tab welding device, comprising: a welding base for placing an electrode tab and a current collector connected to the electrode assembly body; a welding head for welding the electrode tab and the current collector, which is vertically and flexibly disposed above the welding base; and a spraying assembly for spraying insulating adhesive onto the connection between the electrode tab and the electrode assembly body.

[0006] Furthermore, there are two spraying components, located on the upper and lower sides of the electrode tab.

[0007] Furthermore, the spraying assembly includes: a storage tank for storing insulating adhesive; a tube body, one end of which is connected to the storage tank; and a spraying component disposed at the other end of the tube body for spraying insulating adhesive onto the tabs.

[0008] Furthermore, the spraying assembly also includes an on / off valve, which is located on the pipe body.

[0009] Furthermore, the coated part is detachably connected to the welding head or welding seat.

[0010] Furthermore, the electrode welding device also includes a limiting connector, which is disposed on the welding head and connected to the spraying part.

[0011] Furthermore, the sprayed part has a nozzle structure or a brush head structure.

[0012] Furthermore, the brush head structure includes: a main body connected to the tube, the main body having a receiving cavity for accommodating insulating adhesive; and a brush head fitted onto the main body and communicating with the main body.

[0013] Furthermore, the brush head structure also includes a drive unit, the brush head is rotatably mounted on the main body, and the drive unit is mounted on the main body to drive the brush head to rotate around the main body.

[0014] Furthermore, the electrode welding device also includes a controller, which is signal-connected to the spraying assembly.

[0015] The present invention provides a tab welding device comprising a welding base, a welding head, and a spraying assembly. The welding base holds the tabs and current collectors connected to the electrode assembly body. The welding head is vertically detachable above the welding base and is used to weld the tabs and current collectors. The spraying assembly sprays insulating adhesive onto the connection between the tabs and the electrode assembly body. By sequentially placing the tabs and current collectors on the welding base, and bringing the welding head close to the welding base, the current collectors and tabs are pressed together. The spraying assembly applies insulating adhesive to the connection between the tabs and the electrode assembly body, and the welding head welds the current collector to the tabs. This strengthens the tensile strength at the connection between the tabs and the electrode assembly body through the insulating adhesive, preventing tearing during the bending process caused by the welding head. This solves the problem of tabs being easily torn during secondary battery production in the prior art. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic diagram of the electrode welding device in a specific embodiment of the present invention is shown; and

[0018] Figure 2 A schematic diagram of the spraying assembly in another specific embodiment of the present invention is shown;

[0019] Figure 3 A schematic diagram of the electrode welding device in another specific embodiment of the present invention is shown.

[0020] The above figures include the following reference numerals:

[0021] 10. Welding base; 20. Welding head; 30. Spraying assembly; 31. Glue storage tank; 32. Pipe body; 33. Spraying component; 331. Main body; 332. Brush head; 34. On / off valve; 40. Limiting connector; 50. Controller; 100. Electrode assembly body; 110. Electrode tab; 120. Current collector. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0024] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0025] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0026] To address the problem of electrode tabs being easily torn during the production of secondary batteries in the prior art, this utility model provides an electrode tab welding device.

[0027] like Figures 1 to 3 As shown, the electrode welding device includes a welding base 10, a welding head 20, and a spraying assembly 30. The welding base 10 is used to hold the electrode tab 110 and the current collector 120, which are connected to the electrode assembly body 100. The welding head 20 is vertically and vertically positioned above the welding base 10 and is used to weld the electrode tab 110 and the current collector 120. The spraying assembly 30 is used to spray insulating adhesive onto the connection between the electrode tab 110 and the electrode assembly body 100.

[0028] By sequentially mounting the tabs 110 and current collector 120 of the electrode assembly on the welding base 10, and with the welding head 20 close to the welding base 10, the current collector 120 and the tabs 110 are pressed together. The spraying assembly 30 sprays insulating adhesive at the connection between the tabs 110 and the electrode assembly body 100, and the welding head 20 welds the current collector 120 and the tabs 110 together. This method uses insulating adhesive to enhance the tensile strength at the connection between the tabs 110 and the electrode assembly body 100, preventing tearing at the connection between the tabs 110 and the electrode assembly body 100 during bending caused by the welding head 20.

[0029] In this embodiment, the spraying component 30 is disposed above the welding base 10, and the spraying component 30 is disposed correspondingly to the connection between the tab 110 and the electrode assembly body 100. After the welding head 20 is used to cover the position to be welded, insulating glue is sprayed before welding.

[0030] In one embodiment of the present invention (not shown), there are two spraying components 30, which are located on the upper and lower sides of the tab 110.

[0031] Specifically, the tab 110 and current collector 120 are horizontally positioned, and two spraying components 30 are respectively positioned on both sides of the tab 110 in the thickness direction, thereby spraying insulating adhesive on both sides of the connection between the tab 110 and the electrode assembly body 100, thus improving the tensile strength of the connection between the tab 110 and the electrode assembly body 100. Simultaneously, the design of the dual spraying components 30 ensures comprehensive insulating adhesive spraying, achieving complete coverage of the connection between the tab 110 and the electrode assembly body 100, reducing potential short-circuit problems, further improving product safety and reliability, thereby increasing the production yield of the electrode assembly during the production process, and ultimately improving overall production efficiency and product quality.

[0032] like Figures 1 to 3 As shown, the spraying assembly 30 includes a glue storage tank 31, a tube 32, and a spraying component 33. The glue storage tank 31 is used to store insulating glue. One end of the tube 32 is connected to the glue storage tank 31. The spraying component 33 is disposed at the other end of the tube 32 and is used to spray insulating glue onto the tab 110.

[0033] Specifically, such as Figure 1 As shown, the adhesive storage tank 31 is positioned above the welding base 10, and the tube body 32 is made of a soft material to facilitate adjustment of the position of the spraying component 33, enabling precise spraying of insulating adhesive to the connection between the tab 110 and the electrode assembly body 100. The opening size of the spraying component 33 does not exceed the width of the tab 110 to avoid wasting insulating adhesive, and the soft material of the tube body 32 allows the spraying component 33 to be moved upwards or in other directions after the work is completed, avoiding interference with subsequent welding processes.

[0034] like Figures 1 to 3 As shown, the spraying assembly 30 also includes an on / off valve 34, which is disposed on the pipe body 32.

[0035] Specifically, the on / off valve 34 is a manual valve or a solenoid valve. When it is necessary to spray insulating adhesive, the on / off valve 34 is opened to achieve the spraying of insulating adhesive. Of course, the on / off valve 34 can also have the function of adjusting the amount and speed of insulating adhesive sprayed to meet the welding requirements. Optionally, the on / off valve 34 is set on the spraying part 33, and the flow of insulating adhesive is controlled by operating the button on the spraying part 33 corresponding to the on / off valve 34.

[0036] Furthermore, the addition of the on / off valve 34 allows the equipment to precisely control the amount of insulating adhesive sprayed according to welding requirements, avoiding problems of over- or under-application. By precisely controlling the amount of insulating adhesive sprayed, this design not only avoids the problem of adhesive overflow caused by excessive spraying, but also prevents the risk of insufficient tensile strength caused by insufficient spraying.

[0037] In this embodiment, the spraying part 33 is detachably connected to the welding head 20.

[0038] Specifically, the spraying component 33 is detachably connected to the welding head 20. When synchronous movement between the spraying component 33 and the welding head 20 is required, the spraying component 33 is connected to the welding head 20 to press the electrode tab 110 and the current collector 120 together. At the same time, the spraying component 33 is aligned with the connection between the electrode tab 110 and the electrode assembly body 100 and sprays insulating adhesive. When synchronous movement between the spraying component 33 and the welding head 20 is not required, the spraying component 33 can be detached from the welding head 20. Two installation methods for the spraying component 33 are provided, which can be selected according to actual needs.

[0039] In one optional embodiment of this utility model, the spraying part 33 and the welding head 20 are integrally formed, and the tube body 32 and the spraying part 33 are detachably connected, such as by threaded connection or snap-fit.

[0040] like Figure 3 As shown, in another optional embodiment of the present invention, the electrode welding device further includes a limiting connector 40, which is disposed on the welding head 20 and connected to the spraying component 33.

[0041] Specifically, the limiting connector 40 is located on one side of the welding head 20 and is integrally formed with or detachably connected to the welding head 20. The limiting connector 40 is provided with a slot, and the spraying part 33 is snapped into the slot of the limiting connector 40. Optionally, the limiting connector 40 is a clamp.

[0042] Furthermore, the setting of the limiting connector 40 ensures the relative position of the spraying part 33 and the welding head 20, ensuring that the insulating adhesive can be accurately sprayed on the connection between the tab 110 and the electrode assembly body 100, improving the spraying accuracy and product quality, and also avoiding equipment failure caused by insulating adhesive contamination, reducing the maintenance frequency of the production line, thereby improving production efficiency and equipment reliability.

[0043] In this embodiment, the spraying component 33 is a nozzle structure or a brush head structure.

[0044] Specifically, the type of spraying component 33 is selected according to actual needs. When the spraying component 33 is a nozzle structure, it can quickly spray out a large amount of insulating adhesive; when the spraying component 33 is a brush head structure, it can evenly apply the insulating adhesive to the connection between the tab 110 and the electrode assembly body 100. The nozzle structure can quickly spray out a large amount of insulating adhesive in a short time, shortening the time for applying the insulating adhesive. When using the brush head structure, the insulating adhesive can be released reasonably, improving the uniformity of the insulating adhesive coating.

[0045] Furthermore, the choice of nozzle and brush head structures can be flexibly adjusted according to specific product requirements and process conditions. A nozzle structure can be selected for precise dispensing, while a brush head structure can be selected for large-area application of insulating adhesive. This design flexibility significantly improves the applicability and production efficiency of the equipment.

[0046] like Figure 2 As shown, the brush head structure includes a main body 331 and a brush head 332. The main body 331 is connected to the tube 32 and has a receiving cavity for accommodating insulating adhesive. The brush head 332 is sleeved on the main body 331 and communicates with the main body 331.

[0047] Specifically, the receiving cavity in the main body 331 can hold a small amount of insulating adhesive. The brush head 332 is connected to the main body 331. An opening is provided in the main body 331 facing the connection between the tab 110 and the electrode assembly body 100, allowing the insulating adhesive to enter the brush head 332 through the opening. The brush head 332 includes a connecting plate and soft bristles. The insulating adhesive reaches the soft bristles through through holes in the connecting plate, and the insulating adhesive can be brushed onto the tab 110 by manually operating the spraying component 33. When using a brush head structure, it is preferable to provide the brush head structure only above the connection between the tab 110 and the electrode assembly body 100.

[0048] In an optional embodiment of the present invention, the brush head structure further includes a driving part, the brush head 332 is rotatably disposed on the main body 331, the driving part is disposed on the main body 331, and the driving part is used to drive the brush head 332 to rotate around the main body 331.

[0049] Specifically, the drive unit is a drive motor, which is set on the main body 331. The movable structure of the drive unit is set on the brush head 332. The drive unit drives the brush head 332 to rotate around the main body 331. At this time, the tube 32 can be made of a rigid material to enable the drive unit to drive the brush head to move and evenly apply insulating glue to the connection between the tab 110 and the electrode assembly body 100.

[0050] like Figure 2 As shown, the electrode welding device also includes a controller 50, which is signal-connected to the spraying assembly 30.

[0051] Specifically, the controller 50 is a computer, and the on / off valve 34 is a solenoid valve. The controller 50 controls the opening and closing of the on / off valve 34 or controls the size of the opening of the on / off valve 34.

[0052] Furthermore, the automated control of the controller 50 can not only automatically adjust the welding parameters and the amount of insulating adhesive sprayed according to the specific parameters of the electrode assembly body 100 on the production line, but also optimize the production process and improve the adaptability and production efficiency of the equipment through real-time data analysis and feedback.

[0053] From the above description, it can be seen that the above embodiments of this utility model achieve the following technical effects: By setting the electrode tab welding device including a welding base 10, a welding head 20, and a spraying assembly 30, the welding base 10 is used to place the electrode tab 110 and the current collector 120 connected to the electrode assembly body 100, the welding head 20 is movably positioned above the welding base 10, and the welding head 20 is used to weld the electrode tab 110 and the current collector 120, and the spraying assembly 30 is used to spray insulating adhesive onto the connection between the electrode tab 110 and the electrode assembly body 100, thereby achieving the following technical effects: by setting the electrode tab welding device including a welding base 10, a welding head 20, and a spraying assembly 30, the electrode tab 110 and the current collector 120 are welded together. Ear 110 and current collector 120 are sequentially arranged on welding base 10. Welding head 20 approaches welding base 10 to press current collector 120 and ear 110 together. After the spraying assembly 30 sprays insulating glue at the connection between ear 110 and electrode assembly body 100, welding head 20 welds current collector 120 and ear 110 together, thereby enhancing the connection strength between ear 110 and electrode assembly body 100 and preventing tearing at the connection between ear 110 and electrode assembly body 100 during the bending process of ear 110 driven by welding head 20.

[0054] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0055] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0056] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tab welding apparatus characterized by comprising: The application relates to a tab welding device. The tab welding device comprises: a welding seat (10) for placing a tab (110) connected with an electrode assembly body (100) and a current collector (120); a welding head (20) arranged above the welding seat (10) in a liftable manner, the welding head (20) being used for welding the tab (110) and the current collector (120); 2. The tab welding apparatus of claim 1, wherein a spraying assembly (30) used for spraying insulating glue to the connection between the tab (110) and the electrode assembly body (100).

3. The tab welding apparatus of claim 1, wherein The spraying assembly (30) is two, and the two spraying assemblies (30) are arranged on the upper and lower sides of the tab (110). The spraying assembly (30) comprises: a glue storage tank (31) used for storing the insulating glue; a pipe body (32) with one end communicating with the glue storage tank (31); 4. The tab welding apparatus of claim 3, wherein a spraying piece (33) arranged at the other end of the pipe body (32), the spraying piece (33) being used for spraying the insulating glue to the tab (110).

5. The tab welding apparatus of claim 3, wherein The spraying assembly (30) further comprises an opening and closing valve (34) arranged on the pipe body (32).

6. The tab welding apparatus of claim 5, wherein The spraying piece (33) is detachably connected with the welding head (20) or the welding seat (10).

7. The tab welding apparatus of claim 3, wherein The tab welding device further comprises a limiting connecting piece (40) arranged on the welding head (20), and the limiting connecting piece (40) is connected with the spraying piece (33).

8. The tab welding apparatus of claim 7, wherein The spraying piece (33) is in the structure of a nozzle or a brush head. The brush head structure comprises: a main body part (331) connected with the pipe body (32), the main body part (331) having a containing cavity containing the insulating glue; 9. The tab welding apparatus of claim 8, wherein a brush head part (332) sleeved on the main body part (331), and the brush head part (332) is in communication with the main body part (331).

10. The tab welding apparatus according to any one of claims 1 to 9, characterized by, The brush head structure further comprises a driving part, the brush head part (332) is rotatably arranged on the main body part (331), the driving part is arranged on the main body part (331), and the driving part is used for driving the brush head part (332) to rotate around the main body part (331). The tab welding device further comprises a controller (50) in signal connection with the spraying assembly (30).

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