CN201154427Y - Lithium-ion battery spot welding welding spot positioning device - Google Patents

Abstract

The utility model discloses a lithium-ion battery spot welding spot positioning device, which comprises a spot welding base, a linear guide rail connected to the spot welding base and a positioning pin connected thereon, and a positioning seat connected to the linear guide rail The spot welding fixture is connected to the positioning seat, and the positioning blocks located on both sides of the spot welding fixture are respectively connected with positioning blocks that move laterally with it through the connecting structure. The utility model has the beneficial effects of simple structure and convenient use, and can be used in the manufacturing process of various liquid square lithium-ion batteries and polymer batteries, effectively ensuring product quality and improving production efficiency.

Description

Lithium-ion battery spot welding welding spot positioning device

technical field

The utility model relates to a spot welding welding point positioning device, in particular to a lithium ion battery spot welding welding point positioning device.

Background technique

At present, in general, in order to ensure the safety of lithium-ion batteries, lithium-ion cells must be assembled with protective circuit boards to ensure the safety of finished batteries by protecting the circuit boards, but the connection between them The method is generally completed by the process of spot welding. In the actual production process, the welding between the two generally adopts manual positioning operation, and manual operation will cause poor welding strength due to the inability to ensure the parallelism between the two and the positions of the two solder joints. Some will cause damage to the tabs of the battery cell and the nickel sheet of the protective circuit board, and have to be scrapped; some will affect the service life of the product and cause complaints from users; seriously affect the safety of the product.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art, and provide a lithium-ion battery spot welding welding spot positioning device with simple structure, easy to use, accurate and reliable.

The technical scheme that the utility model adopts for realizing the above object is:

Lithium-ion battery spot welding spot positioning device, which includes a spot welding base, a linear guide rail connected to the spot welding base on which a positioning pin is connected, and a positioning seat connected to the linear guide rail and corresponding to it Sliding fit, the spot welding fixture is connected on the positioning seat, and the positioning blocks located on both sides of the spot welding fixture are respectively connected with positioning blocks that move laterally with it through the connecting structure.

The beneficial effects of the utility model are:

1. Simple operation and high efficiency. Before starting work, after the technician has adjusted the device through the standard sample, the operator only needs to simply put the battery and protective circuit board into the spot welding fixture for welding, which eliminates the differences in the techniques of different personnel. The concern of unstable point position and the risk that the welding quality cannot be effectively guaranteed, so as to manufacture good products more accurately and credibly.

2. The application range is very wide, all kinds of square, polymer and liquid batteries are applicable.

3. Low cost, easy and fast replacement. By adopting the device, the efficiency is high and the cost is low.

In a word, the utility model is simple in structure and easy to use, and can be used in the manufacturing process of various liquid prismatic lithium-ion batteries and polymer batteries, effectively ensuring product quality and improving production efficiency.

Description of drawings

Fig. 1 is the front view of the lithium-ion battery spot welding welding spot positioning device of the present utility model;

Fig. 2 is the top view of device shown in Fig. 1;

Fig. 3 is a view of the spot welding fixture of the device shown in Fig. 1 .

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in the accompanying drawings, the lithium ion battery spot welding spot positioning device includes a spot welding base 2, a linear guide rail 4 connected with a positioning pin 5 on the spot welding base 2, and a positioning seat 3 connected to the spot welding base 2. On the described linear guide rail 4 and slidably fit with it, the spot welding fixture 8 is connected on the described positioning seat 3, and the positioning seats on both sides of the described spot welding fixture are respectively connected with a connecting structure and The corresponding positioning block 1 is moved laterally. The connection structure includes a U-shaped groove formed on the positioning block, and bolts are arranged in the groove to connect with the positioning seat.

Lithium-ion battery spot welding spot positioning device is characterized in that the positions of the positive and negative tabs of the battery and the two nickel contact pieces of the protection circuit board B+ and B- can be effectively guaranteed by position control in the X, Y, and Z directions. , due to the movability in the Y direction, through the adjustment of the positioning pins on the spot welding base, the front and rear welding points and the optimal distance between them can be controlled.

Specific usage method:

1) Fix the spot welding base on the working table of the spot welding machine first, and fasten it with screws;

2) Put the battery cell 7 and the protective circuit board 6 into the spot welding fixture, and place them as required;

3) At this time, put the spot welding fixture into the positioning seat again, adjust the Y direction of the welding point to the required position through the positioning pin of the spot welding base; adjust the X direction of the welding point to the required position through the positioning block of the positioning seat position; adjust the upper and lower electrodes of the spot welding machine, the battery tabs and the contacts of the protective circuit board to the required positions.

4) Push the positioning seat forward, and the welding of the first solder spot can be performed when it reaches the limit position; then push it backward, and the second solder spot can be welded when it reaches the limit position.

5) Subsequent work only needs to put the spot welding fixture with the battery cell and the protective circuit board into the positioning seat and repeat the action of 4).

The above-mentioned detailed description of the lithium-ion battery spot welding spot welding spot positioning device with reference to the embodiment is illustrative rather than restrictive, so changes and modifications without departing from the general concept of the present utility model should belong to the utility model within the scope of protection.

Claims (2)

1. Lithium-ion battery spot welding welding point positioning device, it is characterized in that: it comprises spot welding base, is connected on the described spot welding base and is connected with the linear guide rail that is connected with positioning pin on it, and positioning seat is connected on the described straight line On the guide rail and slidingly matched with it, the spot welding fixture is connected to the positioning seat, and the positioning blocks located on both sides of the spot welding fixture are respectively connected to the positioning block through the connecting structure to move laterally with it. . 2. The lithium-ion battery spot welding spot welding spot positioning device according to claim 1, characterized in that: the connection structure includes a U-shaped groove opened on the positioning block, and bolts are arranged in the groove Connect with the positioning seat described above.

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