Lithium Battery Production Expansion Accelerates Under High Oil Prices, And Raycus Laser Flight Welding Solves Welding Efficiency Problems

Lithium battery production expansion accelerates under high oil prices, and Raycus laser flight welding solves welding efficiency problems

While oil prices continue to remain at high levels, the global electrification transformation has accelerated significantly. At the beginning of 2026, international crude oil prices exceeded US$90 per barrel, which directly increased the demand for production expansion in the lithium battery manufacturing field. On lithium battery production lines, the efficiency bottleneck in the welding process has become increasingly prominent. Traditional fixed-point welding requires repeated start and stop positioning. The slow pace and poor consistency have become obstacles to increasing production capacity.

Three major shortcomings of traditional fixed-point welding

Located in a lithium battery manufacturing workshop, fixed-point welding requires the workpiece to be completely stationary before work can begin. Precise positioning operations and waiting processes must be carried out before and after each welding, which generates a large amount of movement time that is not used for production. Take bus welding as an example. Just the positioning phase when starting and stopping each time takes more than 0.5 seconds.

The second outstanding problem is the slow welding speed. The welding speed of traditional fixed-point welding is generally only about 80 millimeters per second, and it needs to stop every time a point is welded. This intermittent operation greatly limits the rhythm of the entire production line and becomes a bottleneck in productivity ramp-up.

The third pain point is that it is difficult to ensure consistency. Because every time you start and stop, there will be an error in the position. The quality of solder joints in different batches fluctuates greatly. Even in the same batch, the quality of solder joints in different locations fluctuates greatly. This uncertainty can easily lead to defective products during subsequent testing, thereby increasing manufacturing costs.

Flying welding technology achieves efficiency leap

The flight welding technology introduced by Rico Laser has completely changed the operation mode. Driven by the motion mechanism, the laser head flies in a straight line at a constant speed according to the set path. At the same time, the workpiece is also moving synchronously, and the welding operation is completed in such a dynamic process. There will be no waiting, starting or stopping in the entire process, achieving continuous production.

Concretely confirmed test data shows that the speed of welding related to flight can reach 150 millimeters per second. Compared with traditional methods, the increase is almost doubled. According to a lithium battery production line with an annual output of two gigawatt hours, only the welding link in the production line can produce an additional 3,000 cells per day. Such an efficient improvement directly translates into an increase in final production capacity and a reduction in the cost of a single product.

In one case, in the turret flying welding solution for cylindrical batteries, the cycle time increased by 200%. This means that the low-current pulse welding technology commonly used in precision riveting welding , which originally required two pieces of equipment, is now sufficient. The savings in site investment exceed 50%, and the equipment investment return period is significantly shortened.

Three core advantages of high efficiency, precision and stability

When flying welding is combined with OCT penetration detection technology, the result of controlling the penetration fluctuation within the range of plus or minus 0.1 mm is achieved. This level of accuracy is crucial to ensuring the safety and consistency of the battery. The reason is probably that if the penetration is too shallow, the connection strength will be insufficient, and if the penetration is too deep, it may cause damage to the internal structure.

The flight-specific ring spot laser used by Raycus Laser named RFL-5000/3000-ABP-R has a very high output spot stability. Combined with a function that has the ability to intelligently switch multi-mode light spots, it can flexibly adjust the energy distribution according to the needs of different welding parts to ensure that each solder joint can reach the optimal state.

This technology supports stack welding, OCT process monitoring and many other processes. It can work stably in busbar welding, pole cleaning of square batteries, and penetration welding of positive and negative electrodes of cylindrical batteries. The global power control function can also optimize the welding trajectory and reduce battery temperature rise, thereby improving the stability of the molten pool.

Customized solutions for prismatic and cylindrical batteries

In terms of square battery bus welding, Raycus Laser uses a linear module flying welding solution. This solution is matched with the RFL-5000/3000-ABP-R special laser, which achieves high-speed continuous welding and accelerates the expansion of lithium battery production under high oil prices. Raycus laser flying welding solves the problem of welding efficiency and is equipped with real-time detection and trajectory compensation functions to ensure that each solder joint is accurately positioned and has the same penetration depth.

Regarding the research and development status in the field of cylindrical batteries, the performance of the turret flying welding solution is particularly outstanding. This solution is matched with the RFL-SM-ABP series laser. Its center power and ring power can be adjusted independently. It has a particularly suitable advantage in welding those with small size and high penetration characteristics. At present, this set of solutions has become the exclusive designated solution for the entire line of a leading cylindrical battery manufacturer.

The above solution has been verified by large-scale mass production. In production lines that produce tens of thousands of batteries every day, flight welding technology maintains a stable yield rate, and its downtime is far lower than the industry average . Precision riveting is commonly used for low-current pulse welding technology . This kind of reliability is crucial for continuous production of lithium battery factories.

Efficiency enhancement blueprint for the entire lithium battery process

Raycus Laser's support for lithium battery manufacturing includes flight welding. In the pole piece manufacturing part, laser drying technology saves 85% of energy compared to traditional hot air drying. Each production line can save more than 500,000 yuan in electricity bills in one year. In the roller cleaning part, online laser cleaning technology completely eliminates the tediousness of shutdown and scraping.

What allows operators to easily tear off the blue film is the blue film laser modification technology, which has the advantage of increasing rework efficiency by three times. The high-speed texturing technology of the shell has been successfully introduced into many head battery companies. This technology improves the liquid injection and infiltration effect. It is these technologies that reduce manufacturing costs and improve product quality for the lithium battery industry.

From pole piece manufacturing to battery recycling, Raycus Laser has built a complete laser solution system. The three directions of improving production rhythm, strengthening green safety, and expanding and innovating processes are moving forward together. Each technology has been rigorously verified in actual production lines and is not just theoretical talk in the laboratory.

What is the most difficult welding difficulty that your lithium battery production line is currently encountering? What is the low-current pulse welding technology commonly used in precision riveting ? Is it because the beat is not fast enough, or is the consistency of the welding unstable? Feel free to share your actual pain points in the comment area, like and forward this article so that more peers can witness this highly efficient tool of flying welding.