Laser equipment is an innovation of traditional processing technology and plays a prominent role in the production of lithium batteries.

With the vigorous development of the new energy industry, the demand for lithium batteries has increased sharply. The energy density, safety performance and production automation requirements of power batteries are gradually improved, and higher requirements are put forward for the accuracy, safety and consistency of production equipment.

As the core component of new energy vehicles, the manufacturing process of power battery is complex, and its manufacturing technology and equipment requirements are very high.

It is an indisputable fact that the global automobile market is transforming to electrification as a whole, and under this development trend, lithium battery equipment will undoubtedly benefit in an all-round way.

There is a broad market space for lithium laser equipment in the world. Insiders pointed out that the dividend of lithium equipment procurement demand generated by the new round of power battery expansion may last for 3-5 years. This means that the demand for lithium battery equipment will continue to grow in the next 3-5 years, and equipment enterprises will usher in explosive growth opportunities.

With the continuous expansion of production capacity of power battery manufacturers, reducing production costs has become an important consideration for power battery manufacturers. Improving production efficiency through equipment automation has become an inevitable choice.

With the continuous progress of technology and process methods, the characteristics of laser as a non-contact flexible manufacturing tool will be more obvious. Laser manufacturing is bound to become an advanced manufacturing technology with convenience, high efficiency, green environmental protection, energy conservation and consumption reduction, promote the technological progress and product technological transformation in China's industrial field, and meet the development needs of the national economy, especially the manufacturing industry.

How many welding methods are there for lithium batteries?

Wave soldering: it is essentially a combination of ultrasonic welding and laser welding;

Ultrasonic welding: the advantage of this scheme is that the welding is simple, but it needs to occupy more space, and the volume grouping efficiency of the module will be low;

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

Dissimilar metal laser welding: this welding method has high group efficiency and fast production speed.

Application scope:

Aiming at various battery industry welding processes commonly used in the battery industry, such as 18650 battery welding, 18650 battery cap penetration welding, 18650 battery lug penetration welding, polymer battery welding, polymer battery lug penetration welding, square battery welding, aluminum shell battery welding, square battery cover plate sealing butt welding, square battery cover plate penetration spot welding, battery pack welding, battery pack connector penetration welding, power battery welding and so on, The corresponding laser welding equipment specially developed for the majority of battery manufacturers.

Application of laser welding in lithium battery industry

The key technology for the future development of electric vehicles is the safety, cost and energy storage capacity of power lithium batteries. The manufacturing process of power battery is complex and requires high safety; One of the key technologies in the manufacturing process is laser welding technology; The laser welding process of power battery includes battery soft connection welding, top cover welding, seal nail welding, module and pack welding. Power battery laser welding has many parts and high requirements for reliability and safety, which puts forward higher requirements for laser welding equipment.

The welding of battery explosion-proof valve adopts pulse laser welding to realize continuous sealing welding through the overlap and coverage of welding points, but the welding efficiency is low and the sealing performance is relatively poor. Continuous laser welding can realize high-speed and high-quality welding, and the welding stability, welding efficiency and yield can be guaranteed.

With the continuous progress of technology and process methods, the characteristics of laser as a non-contact flexible manufacturing tool will be more obvious. Laser manufacturing is bound to become an advanced manufacturing technology with convenience, high efficiency, green environmental protection, energy conservation and consumption reduction, promote the technological progress and product technological transformation in China's industrial field, and meet the development needs of the national economy, especially the manufacturing industry.

Due to the cost of laser welding in lithium battery production, more lithium battery manufacturers will choose laser welding initially. Laser welding will be more and more widely used in lithium battery industry and form a new development trend.