In addition, it affects the output laser beam quality and power. When the product is actually used, if the deviation angle between the laser direction and the axis of the optical path is too large, part of the output laser will be irradiated on the nozzle, which will cause the temperature rise of the nozzle to be too large. The high-power laser is prevented from damaging the fusion joint, and the power bearing capacity of the fiber optical cable is enhanced. The high-efficiency and high-reliability fusion between the quartz end cap and the optical fiber head is realized through the special welding technology. The fusion splicing of large diameter quartz end caps and optical fibers is one of the key technologies for the development of high power fiber optical cable components. As a result, defects such as air holes, cracks, poor forming, and blast holes can be effectively reduced during laser welding of power batteries. In response to these problems of power battery laser welding, the QBH produced by Optizone has improved fusion splicing technology, laser coaxial technology, 3D spot technology and other technologies. Since 2015, Optizone has mass-produced the kilowatt-level fiber optical cable, also known as the laser output head (QBH), and has been recognized by customers in the industry for its advantages such as stable performance. Beam characteristics such as laser pulse waveform, spot radius, beam path, and laser wavelength have a significant impact on welding quality, and can further eliminate welding defects. ②On the basis of process optimization, the characteristics of the laser light source also have a certain impact on the welding quality of the power battery. In response to these problems, a large number of manufacturers focus on process optimization, and effectively reduce defects through technical improvement. These defects lead to a decrease in the strength of the battery pack, a decrease in sealing and conductivity, and cause a series of safety problems such as battery explosion, liquid leakage and heat generation. ①At present, the main problems of laser welding in power batteries are welding defects such as air holes, cracks, poor forming, and blast holes. From 2021 to 2025, the new demand for laser welding equipment in China’s power battery field is increased from 5.6 to 22.1 billion yuan, and the CAGR from 2021 to 2025 is 41%. These laser processes account for 15% to 20% of the power battery investment, while welding accounts for 5% to 15%. Power battery laser processing includes cutting, cleaning, welding and marking. The installed capacity of power batteries reached 154.5GWh, a year-on-year increase of 142.8%. The data shows that in 2021, China’s new energy vehicle sales reached 3.521 million, a year-on-year increase of 157.5%. Author:Optizone Technology (Shenzhen) Limited Click: Time: 09:00:00
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