Fully automatic energy storage battery laser welding line customization service ！

Energy storage is an important part of the technology industry in the field of new energy. The development of energy storage in the domestic market depends on the degree of energy structure transformation and power system reform. Electrochemical energy storage has been widely used in power systems. The installed capacity of the domestic energy storage battery industry is increasing rapidly. The cost of energy storage projects in the market is now showing a downward trend. The demand for photovoltaic storage projects and long-term energy storage is greater. The global energy storage battery market will maintain a rapid growth trend and also promote the development of fully automatic laser welding lines. Shangtuo Laser can provide fully automatic energy storage battery laser welding line customization services.

The history of laser welding and its advantages and characteristics
At present, energy storage battery welding has higher and higher requirements for welding strength and appearance. Traditional welding methods will inevitably cause problems such as distortion and deformation of workpieces due to their huge heat input. In order to compensate for the deformation problem, a large number of subsequent methods are required, which will lead to an increase in costs. The fully automatic laser welding method has the smallest heat input and a very small heat-affected zone. While significantly improving the quality of welded workpieces, it reduces the cost of subsequent work and greatly improves welding efficiency and stability.
Another advantage of laser welding is that it can switch freely between deep fusion welding and heat conduction welding by controlling the amount of defocus. Compared with deep fusion welding, heat conduction welding requires a smaller laser energy density and a smaller welding speed, but it can obtain a very beautiful welding surface effect.

Difficulties in laser welding of energy storage battery modules

During the assembly and welding of energy storage batteries, a large number of nickel sheets or copper-plated nickel sheets are required to meet the connection of battery packs, mainly nickel-aluminum welding. Due to the high reflectivity and sensitivity of pores of aluminum alloy, pores, thermal cracks and bursts are prone to occur during welding. The specific manifestations are:

1. Porosity: During laser welding, the problem of hydrogen generation is particularly prominent due to the rapid cooling time, which is prone to hydrogen holes and pores caused by pore rupture, and also leads to pores caused by the collapse of small holes.

2. Thermal cracks: Aluminum alloy is a typical eutectic alloy. Thermal cracks are prone to occur during welding, such as welding crystallization cracking, HAZ liquefaction cracking, etc. Due to the composition analysis of the weld zone, the grain boundary melts. Under the action of stress, liquefaction

3. Cracks will occur at the grain boundary. Explosion: There are many reasons for explosion, such as the cleanliness of the material, the purity of the material, the properties of the material itself, etc., and stability is the key to the decision.

With the increasing labor costs, fully automatic laser welding lines are a trend. Shangtuo Laser can customize fully automatic laser welding lines, and customize welding lines exclusive to customers according to their technical requirements and on-site production needs to maximize customer benefits.