Composite current collector ultrasonic roll welding device

Abstract

The utility model discloses a composite current collector ultrasonic roll welding device which comprises a supporting platform, a welding platform and an ultrasonic roll welding module, the ultrasonic roll welding module is installed on a sliding rail of the supporting platform, the upper ultrasonic roll welding module is connected with a driving mechanism, a linear welding bottom die is installed on the welding platform, and the linear welding bottom die is connected with the supporting platform. A welding roller of the ultrasonic roller welding module and the linear welding bottom die are oppositely arranged to form an automatic welding area; a circular welding bottom die is mounted at one end of the welding platform, and welding rollers of the ultrasonic roll welding module and welding rollers of the circular welding bottom die are oppositely arranged to form a manual welding area. The utility model has the beneficial effects that two modes of automatic welding and manual welding can be realized, the application scene requirement is improved, and the selection flexibility is higher; and the structure is simple, the manufacturing cost is low, the structure is stable, and the welding requirements of various foils and the layer number requirement can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic welding, in particular to a composite current collector ultrasonic roller welding device. Background Art

[0002] The current collector is a key auxiliary material of lithium-ion batteries. Its main function is to conduct electricity. It collects the current generated by the active materials of the battery to form a larger current output, thereby realizing the process of converting chemical energy into electrical energy. The current collector acts as a carrier of the positive and negative active materials, and also acts as a collector and conductor of positive and negative electrons to generate a larger output current. Therefore, the current collector needs to have comprehensive properties such as high conductivity, good stability, good mechanical strength, and low cost.

[0003] The current collector is one of the key factors to improve the performance of lithium-ion batteries, and the improvement of its welding performance is also a key area of ​​industry research. Due to the advantages of ultrasonic welding, the ultrasonic welding technology of composite current collectors is currently receiving more and more attention from the industry and is being used more and more widely. Research on ultrasonic welding technology is also a hot area of ​​scientific research. In the process of researching welding technology, it is often necessary to use welding equipment that is similar to on-site production conditions, but the manufacturing cost of a complete set of ultrasonic welding equipment is relatively high and expensive, which inevitably increases the cost of research and development. In addition, the corresponding welding equipment currently has a single function and cannot meet the various process test requirements during the research process. Utility Model Content

[0004] The purpose of the utility model is to provide a composite current collector ultrasonic roller welding device in view of the deficiencies in the above-mentioned prior art, which has single-sided automatic welding and double-sided dual ultrasonic manual welding modes to choose from, can meet various small-scale welding test needs, and has a simple structure and low manufacturing cost.

[0005] The utility model adopts the following technical solution to solve the technical problem: a composite current collector ultrasonic roller welding device, comprising a supporting platform, a welding platform and an ultrasonic roller welding module, wherein the ultrasonic roller welding module is installed on the slide rail of the supporting platform, the ultrasonic roller welding module is connected to a driving mechanism, a linear welding bottom mold is installed on the welding platform, and the welding roller of the ultrasonic roller welding module is arranged relative to the welding bottom mold to form an automatic welding area.

[0006] A circular welding bottom mold is installed at one end of the welding platform. In the manual welding mode, the ultrasonic roller welding module is located above the circular welding bottom mold, and the welding roller of the ultrasonic roller welding module is arranged relative to the circular welding bottom mold to form a manual welding area.

[0007] The welding platform is installed in the frame, and the linear welding bottom mold is installed on the upper part of the welding platform to cooperate with the welding roller of the ultrasonic roller welding module to form an automatic welding area.

[0008] The supporting platform is located at the lower part of one side of the welding platform in the frame.

[0009] Two slide rails are arranged on the support platform, a moving plate is installed on the slide rails, and the upper ultrasonic roller welding module is fixedly installed on the moving plate.

[0010] The driving mechanism includes a servo motor and a screw rod. The servo motor is installed between the two slide rails. The output shaft of the servo motor is connected to the screw rod. The screw rod is connected to the screw hole in the flange fixed on the movable plate. The servo motor rotates the screw rod to drive the movable plate to slide on the track.

[0011] A heightening seat is arranged between the ultrasonic roller welding module and the movable plate to increase the height of the ultrasonic roller welding module and facilitate installation and heat dissipation.

[0012] A welding platform is installed on the welding platform outside the linear welding bottom mold, and a detachable tooling platform is installed on the welding platform.

[0013] The tooling platform is provided with a clamp pressing plate for pressing the workpiece to be welded, playing a role in positioning and fixing, and improving welding reliability and stability.

[0014] A first roll rack and a second roll rack are arranged on the feeding side of the frame for placing foil coils, and the first roll rack and the second roll rack are fixed on a material rack, and the material rack is fixed on the feeding side of the frame.

[0015] At least one pair of pressing rollers is arranged between the material rack and the linear welding bottom die of the welding platform.

[0016] Compared with the prior art, the beneficial effects of the utility model are: it can realize two modes of single-sided automatic welding and manual welding, improve the application scenario requirements, and have higher selection flexibility; it has a simple structure, low manufacturing cost, and a stable structure, and can meet the welding needs of various foils and layer requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional structural diagram of a composite current collector ultrasonic roller welding device of the utility model;

[0018] Figure 2 This is a main structural diagram of a composite current collector ultrasonic roller welding device of the utility model;

[0019] Figure 3 This is a left-side structural diagram of a composite current collector ultrasonic roller welding device of the utility model;

[0020] Figure 4 The utility model is a top view of the structure of a composite current collector ultrasonic roller welding device. DETAILED DESCRIPTION

[0021] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] A composite current collector ultrasonic roller welding device, such as Figure 1-4As shown, it includes a frame 1, a support platform 12, a welding platform 11, a linear welding bottom mold 6, an ultrasonic roller welding module, a welding table 8 and a circular welding bottom mold 7. The circular welding bottom mold 7 is fixedly installed on one side (initial side) of the welding platform 11. The welding platform 11 is installed in the frame 1, and the linear welding bottom mold 6 is installed on the upper part thereof. The welding roller of the ultrasonic roller welding module 5 is arranged opposite to the upper surface of the linear welding bottom mold 6 to form an automatic welding area. The support platform 12 is located in the frame 1, at the lower part of one side of the welding platform 11, so as to avoid the influence of vibration when the ultrasonic roller welding module 5 slides on the welding. Two slide rails 13 are arranged on the support platform 12, and a movable plate 15 is installed on the slide rail 13. The ultrasonic roller welding module 5 is fixedly installed on the movable plate 15. A servo motor 14 is installed between the two slide rails 13, and the output shaft of the servo motor 14 is connected to a screw rod, and the screw rod is connected to a screw hole in a flange that can be fixed on the moving plate 15 by a nut. The servo motor 14 rotates the screw rod to drive the moving plate 15 to slide on the track to achieve an automatic welding function. A heightening seat 16 is set between the ultrasonic roller welding module 5 and the moving plate 15 to increase the height of the ultrasonic roller welding module 5 and facilitate installation and heat dissipation. The electrical connection line of the ultrasonic roller welding module 5 is connected by a drag chain structure to improve the connection reliability.

[0025] The ultrasonic roller welding module 5 is an ultrasonic roller welding assembly, which includes a machine base, a roller welding mold installed in the base, and a transducer, etc. The roller welding mold is connected by a cylinder drive so that it has a downward pressure during welding. The roller welding mold includes a welding roller.

[0026] On the welding platform 11, a welding platform 8 is installed outside the linear welding bottom mold 6, and a detachable tooling platform 9 is installed on the welding platform 8. A clamp plate 10 is provided on the tooling platform 9 to press the workpiece to be welded, play a positioning and fixing role, and improve welding reliability and stability. In addition to relying on the gravity of the clamp plate 10 itself, the clamp plate 10 and the tooling platform 9 also have a magnetic suction function to increase the pressure. A movable positioning bar is also provided on the tooling platform 9 for positioning and measurement.

[0027] A first roll rack 3 and a second roll rack 4 are provided on the feeding side of the frame 1 for placing foil coils. Preferably, the first roll rack 3 and the second roll rack 4 are fixed on the material rack 2, and the material rack 2 is fixed on the feeding side of the frame 1. At least one pair of pressing rollers 17 is provided between the material rack 2 and the linear welding bottom die 6 of the welding platform 11, which is used to press and shape the foil pulled out from the material rack 2 and then place it on the linear welding bottom die 6 of the welding platform 11 or the manual welding area composed of the ultrasonic roller welding module 5 and the circular welding bottom die 7 for welding.

[0028] A human-machine interface operation screen 11 is provided on the frame 1 for inputting parameters. A plurality of drawer compartments are provided in the lower space of the frame 1, and the circuit template of the ultrasonic generator 18 is installed in the drawer compartments.

[0029] The utility model can realize two modes of automatic welding on the linear welding bottom die 6 and manual welding between the welding roller of the ultrasonic roller welding die and the circular welding bottom die, which improves the application scenario requirements. In the initial state, the ultrasonic roller welding module 5 is located above the circular welding bottom die 7, and the welding roller of the ultrasonic roller welding module 5 and the welding roller of the circular welding bottom die 7 are arranged relative to each other, forming a manual welding function structure in which circles are tangent to each other. When the automatic welding mode is selected, the servo motor drives the ultrasonic roller welding module 5 to slide, and the welding roller of the ultrasonic roller welding module 6 cooperates with the linear welding bottom die 6 to complete the automatic welding mode operation.

[0030] The utility model has a simple structure, low manufacturing cost and a stable structure, and can meet the welding requirements of various foil materials and layer requirements.

[0031] The above is only a preferred embodiment of the present utility model, and it cannot be used to limit the scope of the implementation of the present utility model. That is, all simple equivalent changes and modifications made according to the scope of the patent application of the present utility model and the content of the utility model description are still within the scope of the present utility model patent.

Claims

1. A composite current collector ultrasonic roller welding device, characterized in that: It includes a supporting platform, a welding platform and an ultrasonic roller welding module. The ultrasonic roller welding module is installed on the slide rail of the supporting platform, the ultrasonic roller welding module is connected to a driving mechanism, a linear welding bottom mold is installed on the welding platform, and the welding roller of the ultrasonic roller welding module is arranged opposite to the linear welding bottom mold to form an automatic welding area.

2. The composite current collector ultrasonic roller welding device according to claim 1, characterized in that: A circular welding bottom mold is installed at one end of the welding platform, and the ultrasonic roller welding module is located above the circular welding bottom mold. The welding roller of the ultrasonic roller welding module and the welding roller of the circular welding bottom mold are arranged oppositely to form a manual welding area.

3. The composite current collector ultrasonic roller welding device according to claim 2, characterized in that: The welding platform is installed in the frame, and the linear welding bottom mold is installed on the upper part of the welding platform.

4. The composite current collector ultrasonic roller welding device according to claim 3, characterized in that: The supporting platform is located at the lower part of one side of the welding platform in the frame.

5. The composite current collector ultrasonic roller welding device according to claim 4, characterized in that: Two slide rails are arranged on the support platform, a moving plate is installed on the slide rails, and the ultrasonic roller welding module is fixedly installed on the moving plate.

6. The composite current collector ultrasonic roller welding device according to claim 5, characterized in that: The driving mechanism comprises a servo motor and a screw rod. The servo motor is installed between the two slide rails. The output shaft of the servo motor is connected to the screw rod. The screw rod is connected to a screw hole in a flange fixed on the moving plate.

7. The composite current collector ultrasonic roller welding device according to claim 6, characterized in that: A heightening seat is arranged between the ultrasonic roller welding module and the movable plate.

8. The composite current collector ultrasonic roller welding device according to claim 3, characterized in that: A welding platform is installed on the welding platform outside the linear welding bottom mold, and a detachable tooling platform is installed on the welding platform.

9. The composite current collector ultrasonic roller welding device according to claim 8, characterized in that: A clamp pressing plate is arranged on the tooling platform.

10. The composite current collector ultrasonic roller welding device according to claim 9, characterized in that: A first roll rack and a second roll rack are arranged on the feeding side of the frame, the first roll rack and the second roll rack are fixed on the material rack, the material rack is fixed on the feeding side of the frame, and at least one pair of pressure rollers are arranged between the material rack and the linear welding bottom mold of the welding platform.

Images