A new ultrasonic welding device

Abstract

The utility model discloses a novel ultrasonic welding device, include: negative electrode welding head, the negative electrode welding head below is equipped with negative electrode welding seat, be equipped with three welding head surfaces on the negative electrode welding head, be welding head A surface, welding head B surface and welding head C surface respectively. The utility model discloses through to the optimization of welding head structure, under the premise of not changing the size of the weld mark, not only can guarantee that welding remains is sufficient, satisfies the demand of the big current charge -discharge of electric core, and greatly prolongs the service life of negative electrode welding head and negative electrode welding seat, reduces the equipment welding head replacement time, improves the equipment production efficiency, reduces the equipment maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of battery production technology, and more specifically to a novel ultrasonic welding device. Background Technology

[0002] In the production process of the negative electrode of pouch cells, ultrasonic welding is used to weld the nickel tabs to the copper foil. This results in a short lifespan for the negative electrode welding head, which needs to be replaced frequently, affecting equipment uptime and increasing equipment maintenance costs.

[0003] Currently, to solve the problem of low lifespan of negative electrode welding heads, the size of the weld teeth is usually increased to improve the strength of the weld and extend the lifespan of the welding head. However, this results in a reduction in the residual welding area, which cannot meet the high current charging and discharging requirements during the use of the battery cell.

[0004] Therefore, how to provide a new type of ultrasonic welding device that can extend the life of the welding head is one of the technical problems that urgently need to be solved in this field. Utility Model Content

[0005] In view of this, the present invention provides a novel ultrasonic welding device, the purpose of which is to solve the problems existing in the prior art.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A novel ultrasonic welding device includes: a negative electrode welding head; a negative electrode welding base is provided below the negative electrode welding head; the negative electrode welding head is provided with three welding head surfaces, namely welding head surface A, welding head surface B and welding head surface C.

[0008] Preferably, the negative electrode welding head is in the shape of a triangular prism.

[0009] Preferably, the negative electrode welding socket is provided with four welding surfaces; each welding surface is provided with four welding socket surfaces, namely welding socket 1# welding surface, welding socket 2# welding surface, welding socket 3# welding surface and welding socket 4# welding surface.

[0010] Preferably, the negative electrode socket is rectangular in shape.

[0011] Compared with the prior art, the present invention has achieved the following technical effects: By optimizing the welding head structure, the present invention can not only ensure sufficient welding residue to meet the high current charging and discharging requirements of the battery cell without changing the size of the weld pattern, but also greatly extend the service life of the negative electrode welding head and negative electrode welding seat, reduce the equipment welding head replacement time, improve the equipment production utilization rate, and reduce equipment maintenance costs. Attached Figure Description

[0012] Figure 1This is a schematic diagram of the structure of a novel ultrasonic welding device according to the present invention;

[0013] Figure 2 This is a schematic diagram of the negative electrode welding head from one perspective.

[0014] Figure 3 This is a schematic diagram of the negative electrode welding head from another perspective.

[0015] Figure 4 This is a schematic diagram of the negative electrode solder pad.

[0016] In the diagram: 1. Negative electrode welding head; 11. Welding head A side; 12. Welding head B side; 13. Welding head C side; 2. Negative electrode welding base; 21. Welding base 1# welding surface; 22. Welding base 2# welding surface; 23. Welding base 3# welding surface; 24. Welding base 4# welding surface; 3. Negative electrode tab; 4. Negative electrode plate. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example

[0019] Reference Figure 1-4 As shown, this utility model discloses a novel ultrasonic welding device, comprising: a negative electrode welding head 1; a negative electrode welding seat 2 is provided below the negative electrode welding head 1, which is used to support the negative electrode tab 3 and the negative electrode sheet 4 during the welding process; the negative electrode welding head 1 is provided with three welding head surfaces, namely welding head A surface 11, welding head B surface 12 and welding head C surface 13; in use, firstly, the foil area of ​​the negative electrode sheet 4 is driven by rollers to be directly below the negative electrode welding head 1 and then stops, and at the same time, the negative electrode tab 3 is accurately transported above the negative electrode sheet 4 by the electrode tab feeding mechanism. At this time, the negative electrode tab 3 is located directly below the welding head A surface 11 on the negative electrode welding head 1. Then, the negative electrode welding head 1 is pressed down under the drive of a cylinder or motor, and works together with the negative electrode welding seat 2 in an ultrasonic environment to weld the negative electrode tab 3 to the foil area of ​​the negative electrode sheet 4. When the negative electrode welding head 1 is worn and needs to be replaced, the currently used welding head A side 11 can be quickly switched to the spare welding head B side 12 by rotating the negative electrode welding head 1, achieving the purpose of quick replacement and maintenance. Similarly, when the welding head B side 12 is worn, the welding head B side 12 can be quickly switched to the welding head C side 13 for use by rotating the negative electrode welding head 1 again.

[0020] The above technical solution optimizes the welding head structure, increasing the number of welding head surfaces from two (positive and negative) to three, meaning one welding head can produce three surfaces. This ensures sufficient welding residue to meet the high-current charging and discharging requirements of the battery cell without changing the size of the weld pattern. It also significantly extends the service life of the negative electrode welding head and negative electrode welding socket, reduces equipment welding head replacement time, improves equipment uptime, and reduces equipment maintenance costs.

[0021] In this embodiment, the middle part of the negative electrode welding head 1 is a triangular prism shape.

[0022] In this embodiment, the negative electrode soldering base 2 is provided with four soldering surfaces; each soldering surface is provided with four soldering surfaces, namely soldering surface 1# 21, soldering surface 2# 22, soldering surface 3# 23 and soldering surface 4# 24; when soldering surface 1# 21 on the negative electrode soldering base 2 is worn, the other three soldering surfaces on the same soldering surface can be quickly replaced and used directly under the negative electrode soldering head 1 by swapping and rotating the negative electrode soldering base 2; when all four soldering surfaces on the same soldering surface are used up, the four soldering surfaces on the other three soldering surfaces can be replaced by rotating the negative electrode soldering base 2.

[0023] In this embodiment, the negative electrode solder pad 2 is rectangular in shape.

[0024] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A novel ultrasonic welding device, characterized in that, include: A negative electrode welding head (1); a negative electrode welding seat (2) is provided below the negative electrode welding head (1); the negative electrode welding head (1) is provided with three welding head surfaces, namely welding head A surface (11), welding head B surface (12) and welding head C surface (13).

2. The novel ultrasonic welding device according to claim 1, characterized in that, The negative electrode welding head (1) is in the shape of a triangular prism.

3. The novel ultrasonic welding device according to claim 1, characterized in that, The negative electrode welding base (2) is provided with four welding surfaces; each welding surface is provided with four welding base surfaces, namely welding base 1# welding surface (21), welding base 2# welding surface (22), welding base 3# welding surface (23) and welding base 4# welding surface (24).

4. A novel ultrasonic welding device according to claim 3, characterized in that, The negative electrode welding base (2) is rectangular in shape.

Images