The year of the dragon just started, BYD on the new energy vehicle price war "first shot", a number of new energy vehicle enterprises have followed, 2024 national new energy vehicle market competition further white-hot. The intensification of competition is not only in price, but also in quality.
In new energy vehicles, power lithium batteries as a core component directly determines the vehicle range and power performance, its manufacturing quality of new energy vehicles has an important impact, and welding is an important process of lithium battery manufacturing, welding process selection will directly affect the cost of the battery, quality, safety and consistency of the battery.
In the field of power battery manufacturing, the sealing nail is an important part of the battery pack, is a square aluminum shell lithium-ion battery in the assembly of the last process, when the electrolyte is injected into the battery, the sealing nail needs to be laser welded, which will isolate the entire core from the external environment, to ensure that the battery sealing safety and reliability.
As the last process of assembly, taking into account the efficiency and at the same time, the excellent rate is also very important, the one-time excellent rate of the sealing nails is required to meet 99.5%, or even higher; the excellent rate of the sealing nails welding, in addition to the influence of the liquid injection port is not clean, the stability of the laser is also one of the important factors affecting the excellent rate.
Chuangxin laser subsidiary Baochenxin has a deep technical accumulation and market experience in the field of new energy, in order to meet the high standard demand of sealing nail welding, for the strict process requirements developed a set of reliable sealing nail welding laser solution, and carried out a number of rigorous tests, for lithium battery sealing nail welding escort.
The solution adopts an advanced welding technology that utilizes a high energy density laser beam to perform precise and efficient welding operations on metal materials. It is specifically designed to meet the needs of smart manufacturing industries such as power battery manufacturing, and aims to improve productivity, product quality and safety.
At the heart of the solution is the high-power QCW laser, which is capable of generating continuous or pulsed laser beams with high energy density and good beam quality. With a precise control system and optics, the laser beam is able to focus precisely on the sealing pegs for fast, reliable welding.
The solution uses QCW's 600/6000W model, which is capable of achieving high peak power and energy in pulse mode, which gives it a significant advantage when processing materials with high hardness, high reflectivity or high thermal conductivity; it also adopts pulse modulation, which enables high-precision, high repetition-frequency pulse control; QCW lasers also have the advantages of good beam quality, high beam brightness, long service life, etc. for sealing nails. QCW laser also has the advantages of good beam quality, high beam brightness, long service life, etc., which provides reliable guarantee for sealing nail welding. Compared with the 600W YAG laser on the market, QCW's 600/6000W laser can achieve more than twice the welding speed, and has a high photoelectric conversion rate, no need to calibrate the optical path, no optical consumables, and low maintenance.
In addition to the high-power and high-efficiency QCW lasers, this sealing nail welding laser solution also uses specialized welding heads and selects the optimal external light path to obtain better welding results.
The use of QWC lasers in sealing nail welding offers significant advantages:
-High precision and flexibility: The solution allows for precise positioning and focus control, resulting in highly accurate welding results. At the same time, the small focused spot of the laser beam enables micro-welding and is suitable for sealing nails of various complex shapes and sizes.
-Efficient and energy-saving: characterized by high energy density and fast welding, it is able to realize efficient and fast sealing nail welding and improve production efficiency. At the same time, the welding energy consumption is low, compared with the traditional YAG welding method, the power consumption is only 10%, but the efficiency is more than double.
-Automation and Intelligent: With the development of industrial automation and intelligent manufacturing, the degree of automation and intelligence of the sealing nail laser welding is constantly improving, and it can realize automated feeding, positioning, welding and other operations to improve production efficiency and product quality.
-No consumables, maintenance-free: with modular design, it is simple and quick to replace or repair parts, and it only needs electric energy to run, no additional gas or solid medium to generate laser, no consumables consumption in the process of using, reducing the running cost.
-Wide range of applications: sealing nail welding has a wide range of applications in power battery manufacturing, automotive manufacturing, electronic equipment manufacturing and other fields.
