Advantages of resistance welding: good working conditions, low equipment cost, simple operation and no need for special welding tools. lack
Key points: it is not suitable for welding dissimilar materials, and the electrode rod needs to be replaced, which may cause damage to the welding part. Replace the welding part.
Large shape and poor welding consistency.
Advantages of laser welding: high energy density, high welding speed, small heat affected zone, small workpiece deformation and automatic process.
Height and good consistency. Disadvantages: high requirements for surface cleanliness and flatness of welding workpiece, high welding machine structure,
Supporting equipment is expensive and requires special welding tools.
Prospect of resistance welding and laser welding technology
The advantages of resistance welding can be seen from the application of resistance welding and laser welding technology in lithium batteries.
Potentially, the equipment is low in price, but it is not suitable for welding foreign bodies, and the electrode rods are replaced and maintained frequently, so it is not suitable for welding.
Large material loss and large product deformation. The advantage of laser welding is that it is suitable for welding dissimilar materials.
Welding material loss is small, welding workpiece deformation is small, equipment performance is stable and easy to operate, and welding quality is good, but equipment is not equal to welding quality.
The supporting system is more expensive.
In recent years, many domestic and foreign lithium battery manufacturers, in a more complicated production process, are different.
Different welding methods are used in different working procedures and welding parts, but the cost of resistance welding technology is low.
The advantages of are still the most common applications. With the development of new energy vehicles, the matching and welding of lithium batteries
The precision and quality of welding put forward higher requirements, and resistance welding has been difficult to meet these requirements in some aspects.
. At the same time, the laser industry in China has developed rapidly, and the introduction of laser welding has made a breakthrough, and the equipment price has also.
Will be further reduced, which will reduce the cost of laser welding in the production of lithium batteries, initially more lithium batteries.
Manufacturers will choose laser welding. Laser welding will be more and more widely used in lithium battery industry, and form a new
Development trend.