New energy tram lithium battery laser welding machine

New energy tram lithium battery laser welding machine

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 dramatically. The energy density and safety performance of power batteries and the requirements for production automation are gradually increasing, which puts forward higher requirements for the accuracy, safety and consistency of production equipment. As the core component of new energy vehicles, the power battery has a complex manufacturing process, and its manufacturing technology and equipment requirements are extremely high.

It is an indisputable fact that the global automobile market is transformed to electrification as a whole, and under this general development trend, lithium battery equipment will undoubtedly benefit in an all-round way. The global market for lithium battery laser equipment is broad, and industry insiders pointed out that the dividend of lithium battery 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 companies will usher in explosive growth opportunities. With the continuous expansion of the production capacity of various power battery manufacturers, reducing production costs has become an important consideration for power battery manufacturers, and improving production efficiency through equipment automation has become an inevitable choice. With the continuous advancement of technology and process methods, the characteristics of lasers as non-contact flexible manufacturing tools will become more obvious. Laser manufacturing will inevitably become an advanced manufacturing technology that is convenient, efficient, green and environmentally friendly, energy-saving and consumption-reducing, promotes technological progress in my country's industrial field and product technological transformation, and meets the development needs of the national economy, especially the manufacturing industry.

How many welding methods are there for lithium batteries?

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

Ultrasonic welding: The advantage of this solution is that the welding is simple, but it takes up a lot of space, and the volume grouping efficiency of the module will be lower;

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

Dissimilar metal laser welding: This welding method is also highly efficient in groups and has a fast production speed.

Application range:

For 18650 battery welding, 18650 battery cap penetration welding, 18650 battery tab penetration welding, polymer battery welding, polymer battery tab penetration welding, square battery welding, aluminum shell battery welding, square battery welding, which are often used in the battery industry Battery cover sealing butt welding, square battery cover penetration spot welding, battery pack welding, battery pack connecting piece penetration welding, power battery welding and other welding processes in the battery industry, the corresponding lasers specially developed for the majority of battery manufacturers welding equipment.

Application of laser welding in lithium battery industry

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

The welding of the battery explosion-proof valve is performed by pulsed laser welding, and continuous sealing welding is realized by overlapping and covering the welding point and the welding point, but the welding efficiency is low, and the sealing performance is relatively poor. Continuous laser welding can achieve high-speed and high-quality welding, and welding stability, welding efficiency and yield can be guaranteed.

With the continuous advancement of technology and process methods, the characteristics of laser as a non-contact flexible manufacturing tool will be more obvious. Laser manufacturing will inevitably become an advanced manufacturing technology that is convenient, efficient, green and environmentally friendly, energy-saving and consumption-reducing, promotes technological progress in my country's industrial field and product technological transformation, and meets the development needs of the national economy, especially the manufacturing industry.

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