With the continuous development of laser technology, the application worldwide is more and more extensive. China also attaches great importance to the development of the laser industry. "Made in China 2025" regards the laser industry as one of the core industries for key development. According to relevant market statistics, the laser industry will maintain a rapid growth of around 10% in the next five years.
Fiber laser is a very common industrial equipment. Fiber laser applications are widely used, including laser fiber communication, laser space telematics, industrial shipbuilding, automobile manufacturing, laser engraving laser marking laser cutting, printing rolls, metal non-metal Drilling/cutting/welding (brazing, quenching, cladding and deep welding), military defense security, medical instrumentation, large infrastructure, pumping sources for other lasers, etc.
In recent years, in addition to the above-mentioned traditional application fields, with the rapid development of China's new energy vehicles, new energy vehicles will become the next growth pole of fiber lasers.
Fiber lasers are useful in the new energy vehicle marketThe application of laser welding in lithium batteries is mainly used in many places, such as battery explosion-proof valve welding, battery ear soldering, battery pole spot welding, power battery housing and cover sealing welding, power battery module and pack welding. With the gradual outbreak of the new energy vehicle market, fiber lasers will have great market potential in the future.
Many well-known laser companies in the industry are optimistic about the new energy vehicle market. For example, the world-renowned fiber laser manufacturer has said that fiber lasers are suitable for many applications. One of the most exciting areas is the automotive industry, especially electric vehicles. As the global automotive industry is shifting from fuel vehicles to electric vehicles, there is a high demand for cutting, welding and surface treatment (cleaning, cladding, strengthening, etc.) using fiber lasers. So this will be the next potential application for fiber lasers. Huagong Technology, Dazu Laser, etc. have also said that they will focus on the new energy vehicle market.
Laser welding is an excellent choice for power battery production processes
As we all know, the cost of new energy vehicles is still high, and the cost of power batteries is a big part. The laser welding on the battery is promising because of the many welding parts and the considerable process difficulty. Laser welding is a very important process in the production of power batteries, which directly determines the consistency, stability and safety of the battery.
Compared with the traditional welding method, the advantages of laser welding are small loss of welding consumables, stable and easy operation of equipment, high welding quality and high degree of automation. These are the necessary conditions for laser welding in large-area applications in the battery industry.
Widely used in motor manufacturing
In addition to battery manufacturing, motor technology is a very important part of the new energy automotive industry, and laser technology can be widely used. Since the motor manufacturing requires high welding strength, small heat affected zone and high precision for the welded parts, the advantages of laser welding are obvious compared with the conventional welding methods. For example, CO2 gas shielded welding or tungsten argon arc welding is generally used for the ring welds before the rotor shaft and the pressure ring of the motor. The welding will cause large deformation, and the heat generated by the welding will affect the magnetic steel in the motor body. The laser welding method uses high energy concentration, high density, high heating efficiency and high speed. Therefore, the deformation of the welded parts is small, and the metal in the non-melting zone is less affected by heat, which is superior to other welding methods.
Domestic fiber laser statusChina's fiber laser industrialization started relatively late. In the early days, almost all domestic fiber lasers were imported from overseas. IPG's fiber lasers once occupied more than 80% of the domestic market. In recent years, fiber laser technology has developed rapidly. The annual growth rate of fiber lasers exceeds 35%, which is much higher than the growth rate of 7%-9% of global industrial lasers. Fiber lasers are gradually encroaching on the market share of solid and carbon dioxide lasers due to their innate advantages, and fiber lasers are gradually opening up new applications.
It is expected that in the next three years, China's fiber laser market will continue to grow at a high speed, and its market share continues to expand. Under the driving force of market competition, the price of some products will fall further, making fiber lasers more popular, but the decline of low-power fiber lasers is not large; the demand for domestic high-power fiber lasers has increased, which has greatly boosted the sales of domestic fiber lasers.
Fiber laser technology also needs to break throughWhether fiber lasers can fully occupy the new energy vehicle market depends not only on the market and cost, but also on technological breakthroughs. Compared to ordinary lasers, pump energy analysis is currently a technical difficulty. Since the working medium used in the fiber laser has the form of fiber, its characteristics are affected by the fiber conducting properties. In order to improve the pumping efficiency, the ion distribution and the pump energy distribution should be overlapped as much as possible, and different models and special types should be introduced. Analytical methods to achieve the best analytical results.
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