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Why does the lithium battery industry need a large number of fiber laser welding machines?

Views: 34     Author: Site Editor     Publish Time: 10-14-2021      Origin: Site

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Laser equipment is an innovation of traditional processing technology and plays a prominent role in lithium battery manufacturing. In particular, laser technology represented by laser welding machines has been widely used in the manufacture of lithium batteries. With the overall transformation of the global automotive market to electrification, the demand for lithium batteries has increased sharply, and the global lithium battery laser equipment market has a broad space. So why does the lithium battery industry need a large number of fiber laser welding machines in the future? The Leapion laser analysis is as follows:

    

There are four common welding methods for lithium batteries:

1. Wave welding: essentially a combination of ultrasonic welding and laser welding;

2. Ultrasonic welding: The advantage of this scheme is that the welding is simple, but it takes up more space, and the volume of the module will be less efficient in grouping;

3. Laser welding: At present, this scheme is the most widely used, but the structure is slightly different;

4. Laser welding of dissimilar metals: This welding method is also very efficient in grouping and fast in production.

 

Because the production process of lithium batteries is complicated and the safety requirements are high, one of the key process technologies in the production process is laser welding technology; the laser welding process of power battery includes battery soft connection welding, top cover welding, sealing nail welding, module and PACK welding.

Because of its fast speed and high precision, the laser welding machine can greatly improve the safety and reliability of power batteries.

The fiber laser welding machine mainly has the following 5 major applications in the lithium battery manufacturing industry:

1. Welding of battery explosion-proof valve

2. Welding of battery tabs

3. Spot welding of battery poles

4. The battery shell and the cover plate are sealed and welded

5. Welding of power battery module and pack

7.1激光焊接2

Fiber laser welding machine has many unique advantages:

1. High efficiency of fiber laser welding

The fiber laser welding machine has a high degree of automation and a simple welding process. The non-contact operation method can meet the requirements of cleanliness and environmental protection. Processing workpieces with fiber laser welding machines can improve work efficiency. The finished workpieces have beautiful appearance, small welds, large welding depths and high welding quality.

 

2. Flexible fiber laser welding methods

There are many welding methods available for fiber laser welding machines, for example, spot welding, overlap welding, butt welding and sealing welding can be realized. It can be seen that the welding methods of fiber laser welding machines are diversified.

 

3. The fiber welding effect is good, and the welding seam is small

The fiber laser welding machine has a large weld depth ratio, a small specific energy, a small heat-affected zone, a small deformation of the weldment, and the welded workpiece is flat and beautiful. It is especially suitable for the welding of precision and heat-sensitive parts.

 

4. The materials for fiber laser welding are not limited

The laser beam emitted by the metal laser welding machine can quickly melt different types of metal materials, even metal materials that are difficult to weld with traditional welding machines, such as carbon steel, stainless steel, aluminum structural steel, copper and other metals can be welded.

 

5. The fiber laser welding machine has a wide range of uses and strong functions

The flexible optical fiber transmission device can not only precisely weld various devices on the host, but also repair and weld large workpieces far away from the host, which meets the various needs of different customers.

 

It can be seen that there are too many places where fiber laser welding machines are used in the lithium battery industry, and fiber laser welding machines have many application advantages. This is why the lithium battery industry will require a large number of fiber laser welding machines. For more professional questions about fiber laser welding machine, please consult Leapion Laser.


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