An ultrasonic roll bonding jig

Abstract

This utility model belongs to the field of ultrasonic welding technology, specifically relating to an ultrasonic rolling welding fixture for clamping and positioning a battery cell assembly so that the battery cell tabs are located between the upper and lower welding heads of the welding machine. The fixture includes a base plate, a support mechanism, a lateral movement mechanism, a lifting mechanism, and a positioning mechanism. The lateral movement mechanism is used to adjust the horizontal position of the battery cell assembly, the lifting mechanism is used to adjust the height of the battery cell assembly, and the positioning mechanism is provided on the lifting mechanism to position the battery cell assembly so that the upper and lower welding heads can perform rolling welding on the battery cell tabs. This utility model controls the movement of the battery cell assembly through the lateral movement mechanism, ensuring that the battery cell tabs move synchronously with the upper and lower welding heads during the rolling welding process. This ensures that the weld marks on the tabs remain uniform and avoids incomplete or over-welded welds.

Description

Technical Field

[0001] This utility model belongs to the field of ultrasonic welding technology, and specifically relates to an ultrasonic rolling welding fixture. Background Technology

[0002] Ultrasonic rolling welding, as an advanced welding technology, boasts high fusion strength, good conductivity, spark-free operation, near-cold processing, and the characteristic that the weld material does not melt, preventing brittle metals. The welded material exhibits excellent conductivity with an extremely low or near-zero resistivity. It has low requirements for the surface of the weld metal; oxidation or electroplating is acceptable. The welding time is short, and no flux, gas, or solder is needed. The welding process is spark-free, making it environmentally friendly and safe. However, ultrasonic rolling welding places high demands on the welding process. Inappropriate welding parameter settings and insecure workpiece positioning can significantly reduce the service life and conductivity of the welded product.

[0003] Ultrasonic rolling welding is a continuous welding technique that uses ultrasonic technology to weld thin copper or aluminum sheets together. It is widely used in the lithium battery industry. In common applications, ultrasonic rolling welding is a continuous welding process, and the welding area is generally planar.

[0004] Currently, conventional rolling welding machines consist of an upper welding head and a lower welding head. During ultrasonic welding, the workpiece needs to be rolled and welded synchronously by the upper and lower welding heads. When welding lithium battery tabs, it is usually necessary to manually place the tabs between the upper and lower welding heads so that the tabs roll with the upper and lower welding heads. Because it is impossible to ensure that the tabs move at the same speed as the upper and lower welding heads during manual operation, it is easy to cause uneven weld marks or curved trajectories, resulting in phenomena such as cold welds or over-welds.

[0005] Therefore, it is necessary to improve the shortcomings of the existing technology in order to overcome its deficiencies in practical applications. Utility Model Content

[0006] Based on the aforementioned shortcomings and deficiencies in the prior art, one of the objectives of this utility model is to at least solve one or more of the aforementioned problems in the prior art. In other words, one of the objectives of this utility model is to provide an ultrasonic rolling welding fixture that meets one or more of the aforementioned requirements.

[0007] To achieve the above-mentioned objectives, this utility model adopts the following technical solution:

[0008] This utility model provides an ultrasonic rolling welding fixture for clamping and positioning a battery cell assembly so that the battery cell tabs are located between the upper and lower welding heads of a welding machine. The fixture comprises a base plate, a support mechanism, a lateral movement mechanism, a lifting mechanism, and a positioning mechanism. The lateral movement mechanism adjusts the horizontal position of the battery cell assembly, the lifting mechanism adjusts the height of the battery cell assembly, and the lifting mechanism is equipped with a positioning mechanism for positioning the battery cell assembly so that the upper and lower welding heads can perform rolling welding on the battery cell tabs.

[0009] As a preferred embodiment, the support mechanism includes a bracket and a support platform, with the bottom end of the bracket connected to the base plate and the top end of the bracket connected to the support platform.

[0010] As a preferred embodiment, the transverse mechanism includes a servo module, a transverse plate, a slider, and a slide rail. The servo module and the slide rail are mounted on the support platform. The slider slides on the slide rail. The slider is connected to the transverse plate. The servo module drives the transverse plate to reciprocate along the slide rail.

[0011] As a preferred embodiment, the lifting mechanism includes a cylinder, a lifting plate, and a guide assembly. The guide assembly is provided between the lifting plate and the transverse plate. The cylinder is mounted on the transverse plate and is connected to the lifting plate in a transmission manner. The cylinder drives the lifting plate to move up and down along the guide assembly.

[0012] As a preferred embodiment, the guiding assembly includes a guide rail and a guide block, the guide block is connected to the transverse plate, the guide rail passes through the transverse plate and is connected to the lifting plate, and the guide block cooperates with the guide rail.

[0013] As a preferred embodiment, the lifting mechanism further includes two limiting components, which are respectively disposed on both sides of the transverse plate to limit the position of the lifting plate in the vertical direction.

[0014] As a preferred embodiment, the limiting assembly includes a limiting rod, a limiting nut, and a locking nut. The limiting rod passes through the support platform, and one end of the limiting rod is connected to the lifting plate. The limiting nut and the locking nut are installed on the limiting rod, and the limiting nut and the locking nut cooperate to limit the movement position of the limiting rod.

[0015] As a preferred embodiment, the positioning mechanism includes a stop block, a first limiting block, and a second limiting block. The stop block is fixedly connected to the lifting plate, and the first limiting block and the second limiting block are detachably connected to the lifting plate. The first limiting block, the second limiting block, and the stop block cooperate to position the battery cell assembly.

[0016] As a preferred embodiment, the battery cell assembly includes a battery cell and a battery cell clamp. The battery cell has battery cell tabs at both ends. The battery cell clamp is used to clamp and position the battery cell so that the battery cell tabs are located between the upper welding head and the lower welding head.

[0017] Compared with the prior art, the advantages of this utility model are:

[0018] This utility model provides an ultrasonic rolling welding fixture. A transverse mechanism drives the battery cell tabs to move synchronously with the upper and lower welding heads. A lifting mechanism ensures the battery cell tabs are in contact with the upper and lower welding heads. A positioning mechanism fixes the position of the battery cell relative to the upper and lower welding heads, thus fulfilling the rolling welding requirements for the battery cell's movement. The welding position is adjustable, facilitating the welding of different lithium battery cells. It offers high welding efficiency and stable welding quality. During the rolling welding process, the battery cell tabs maintain synchronized movement speed with the upper and lower welding heads, ensuring uniform weld marks and preventing incomplete or over-welded welds. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other embodiments can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the ultrasonic rolling welding fixture according to an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the support mechanism according to an embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the lifting mechanism according to an embodiment of this application;

[0023] Figure 4 This is a schematic diagram of the structure of the battery cell clamp according to an embodiment of this application;

[0024] Figure 5 This is a top view of the battery cell clamp according to an embodiment of this application;

[0025] Figure 6 This is a schematic diagram of the structure of the limiting component according to an embodiment of this application;

[0026] In the diagram: 0 Base plate, 1 Support mechanism, 11 Bracket, 12 Support platform, 2 Transverse mechanism, 21 Transverse plate, 22 Servo module, 23 Slider, 24 Slide rail, 3 Lifting mechanism, 31 Cylinder, 32 Lifting plate, 33 Guide assembly, 331 Guide rail, 332 Guide block, 34 Limit assembly, 341 Limit rod, 342 Limit nut, 343 Locking nut, 4 Positioning mechanism, 41 First limit block, 42 ​​Second limit block, 43 Stop block, 5 Welding machine, 51 Upper welding head, 52 Lower welding head, 6 Battery cell assembly, 61 Battery cell clamp, 62 Battery cell tab. Detailed Implementation

[0027] To more clearly illustrate the embodiments of this application, the specific implementation methods of this application will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this application. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0028] In the description of the embodiments of this application, the terms "upper," "lower," "front," "rear," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the application. In addition, the terms "first," "second," etc., are only used for distinction in description and have no special meaning.

[0029] Please refer to some embodiments of this application. Figures 1 to 6 As shown, an ultrasonic rolling welding fixture is provided for clamping and positioning a battery cell assembly 6 so that the battery cell tabs are located between the upper welding head 51 and the lower welding head 52 of the welding machine 5. The fixture includes a base plate 0, a support mechanism 1, a transverse mechanism 2, a lifting mechanism 3, and a positioning mechanism 4. The transverse mechanism 2 is used to adjust the horizontal position of the battery cell assembly 6, and the lifting mechanism 3 is used to adjust the height of the battery cell assembly 6. The lifting mechanism 3 is provided with a positioning mechanism 4, which is used to position the battery cell assembly 6 so that the upper welding head 51 and the lower welding head 52 can perform rolling welding on the battery cell tabs 62.

[0030] In some embodiments of this application, the support mechanism 1 includes a bracket 11 and a support platform 12, with the bottom end of the bracket 11 connected to the base plate 0 and the top end of the bracket 11 connected to the support platform 12.

[0031] In some embodiments of this application, the transverse mechanism 2 includes a servo module 22, a transverse plate 21, a slider 23, and a slide rail 24. The servo module 22 and the slide rail 24 are mounted on the support platform 12. The slider 23 is slidably fitted on the slide rail 24. The slider 23 is connected to the transverse plate 21. The servo module 22 drives the transverse plate 21 to reciprocate along the slide rail 24 in the front-back direction.

[0032] In some embodiments of this application, the lifting mechanism 3 includes a cylinder 31, a lifting plate 32, and a guide assembly 33. The guide assembly 33 is provided between the lifting plate 32 and the transverse plate 21. The cylinder 31 is mounted on the transverse plate 21 and is connected to the lifting plate 32 in a transmission manner. The cylinder 31 drives the lifting plate 32 to move up and down along the guide assembly 33.

[0033] In some embodiments of this application, the guide component 33 includes a guide rail 331 and a guide block 332. The guide block 332 is connected to the transverse plate 21, the guide rail 331 passes through the transverse plate 21 and is connected to the lifting plate 32, and the guide block 332 cooperates with the guide rail 331.

[0034] In some embodiments of this application, the lifting mechanism 3 further includes two limiting components 34, which are respectively disposed on both sides of the transverse plate 21 to limit the position of the lifting plate 32 in the vertical direction.

[0035] In some embodiments of this application, the limiting component 34 includes a limiting rod 341, a limiting nut 342, and a locking nut 343. The limiting rod 341 passes through the support platform 12, and one end of the limiting rod 341 is connected to the lifting plate 32. The limiting nut 342 and the locking nut 343 are installed on the limiting rod 341. The limiting nut 342 and the locking nut 343 cooperate to limit the movement position of the limiting rod 341, thereby limiting the lifting plate 32.

[0036] In some embodiments of this application, the positioning mechanism 4 includes a stop 43, a first limiting block 41, and a second limiting block 42. The stop 43 is fixedly connected to the front side of the lifting plate 32, and the first limiting block 41 and the second limiting block 42 are detachably connected to the rear side and the left side of the lifting plate 32, respectively. The first limiting block 41 and the second limiting block 42 cooperate with the stop 43 and abut against the front side, the rear side, and the left side of the battery cell assembly 6, respectively, thereby achieving the positioning of the battery cell assembly 6.

[0037] In some embodiments of this application, the battery cell assembly 6 includes a battery cell and a battery cell clamp 61. The battery cell has battery cell tabs 62 at both ends. The battery cell clamp 61 is used to clamp and position the battery cell so that the battery cell tabs 62 are located between the upper welding head 51 and the lower welding head 52.

[0038] According to some embodiments of this application, a transverse mechanism drives the battery cell tab to move synchronously with the upper and lower welding heads, a lifting mechanism makes the battery cell tab fit with the upper and lower welding heads, and a positioning mechanism fixes the position between the battery cell and the upper and lower welding heads, thereby achieving the rolling welding requirements for the battery cell. The welding position is adjustable, which is convenient for welding different lithium battery cells. The welding efficiency is high and the welding quality is stable. During the rolling welding process, the battery cell tab keeps the upper and lower welding heads moving at a synchronous speed, which can ensure that the welding tab is uniform and avoid the phenomenon of cold welding or over-welding.

[0039] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0040] The above description is only a detailed explanation of the preferred embodiments and principles of this application. For those skilled in the art, there may be changes in the specific implementation methods based on the ideas provided in this application, and these changes should also be considered within the scope of protection of this application.

Claims

1. An ultrasonic rolling welding fixture for clamping and positioning a battery cell assembly so that the battery cell tabs are positioned between the upper and lower welding heads of a welding machine, characterized in that, The fixture includes a base plate, a support mechanism, a lateral movement mechanism, a lifting mechanism, and a positioning mechanism. The lateral movement mechanism is used to adjust the horizontal position of the battery cell assembly, the lifting mechanism is used to adjust the height of the battery cell assembly, and the lifting mechanism is equipped with a positioning mechanism for positioning the battery cell assembly so that the upper welding head and the lower welding head can perform rolling welding on the battery cell tabs.

2. The ultrasonic rolling welding fixture according to claim 1, characterized in that, The support mechanism includes a bracket and a support platform. The bottom end of the bracket is connected to the base plate, and the top end of the bracket is connected to the support platform.

3. The ultrasonic rolling welding fixture according to claim 2, characterized in that, The transverse mechanism includes a servo module, a transverse plate, a slider, and a slide rail. The servo module and the slide rail are mounted on the support platform. The slider slides on the slide rail. The slider is connected to the transverse plate. The servo module drives the transverse plate to reciprocate along the slide rail.

4. An ultrasonic rolling welding fixture according to claim 3, characterized in that, The lifting mechanism includes a cylinder, a lifting plate, and a guide assembly. The guide assembly is provided between the lifting plate and the transverse plate. The cylinder is mounted on the transverse plate and is connected to the lifting plate in a transmission manner. The cylinder drives the lifting plate to move up and down along the guide assembly.

5. An ultrasonic rolling welding fixture according to claim 4, characterized in that, The guiding assembly includes a guide rail and a guide block. The guide block is connected to the transverse plate. The guide rail passes through the transverse plate and is connected to the lifting plate. The guide block cooperates with the guide rail.

6. An ultrasonic rolling welding fixture according to claim 4, characterized in that, The lifting mechanism also includes two limiting components, which are respectively located on both sides of the horizontal sliding plate to limit the position of the lifting plate in the vertical direction.

7. An ultrasonic rolling welding fixture according to claim 6, characterized in that, The limiting assembly includes a limiting rod, a limiting nut, and a locking nut. The limiting rod passes through the support platform, and one end of the limiting rod is connected to the lifting plate. The limiting nut and the locking nut are installed on the limiting rod. The limiting nut and the locking nut cooperate to limit the movement position of the limiting rod.

8. An ultrasonic rolling welding fixture according to claim 4, characterized in that, The positioning mechanism includes a stop block, a first limiting block, and a second limiting block. The stop block is fixedly connected to the lifting plate, and the first limiting block and the second limiting block are detachably connected to the lifting plate. The first limiting block, the second limiting block, and the stop block cooperate to position the battery cell assembly.

9. An ultrasonic rolling welding fixture according to claim 1, characterized in that, The battery cell assembly includes a battery cell and a battery cell clamp. The battery cell has battery cell tabs at both ends. The battery cell clamp is used to clamp and position the battery cell so that the battery cell tabs are located between the upper welding head and the lower welding head.

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