MOPA pulsed fiber laser is used to clean copper hair-pins in the new energy field

The electric motor is one of the core parts of new energy vehicles and is constantly developing towards high power density and high motor efficiency. The application of flat enameled wire can significantly increase the effective copper area and reduce copper consumption. The copper wires in the slot are arranged more regularly and the slot full rate is higher, thus improving the efficiency and power density of the drive motor. The trend of automobile intelligence and electrification is obvious. Due to the increase in demand for hair-pin motors, the demand for flat enameled wires has also been further expanded. The copper hair-pin inside the motor must ensure insulation and achieve electrical isolation. It is usually covered with a layer of paint or an organic insulation layer. Before hair-pin welding, the insulation layer in the welding area needs to be effectively removed. Mechanical stripping can damage the wires, and CO2 lasers often cannot completely remove the insulation. Based on this, Raycus Laser has developed the Flag Series P500MX MOPA pulsed fiber laser, which can achieve cleaning results efficiently. 



The P500MX MOPA pulse fiber laser of the Flagship series launched by Raycus Laser can be widely used in battery pole cutting, metal deep engraving, flat copper wire cleaning, battery pole cleaning, positive and negative pole cleaning, battery box pole cleaning, battery box surface electrolyte cleaning, etc. It is an ideal choice for industrial applications such as fine processing of thin foils and coatings, surface treatment, micro-machining, photovoltaics, scribing and new energy. It adopts a water-cooling design, has good stability, high single pulse energy (2mJ), high beam quality (≤1.8), a variety of pulse widths available from 20-500ns, repetition frequency 1-4000kHz, the first pulse is available, it has a continuous mode, parameters can be switched in real time, and it has a network port function.

 

The use of the Flag series high-power 500W MOPA laser has a high cleaning effect, and the temperature during the cleaning process does not exceed 40°C, which does not affect the material properties. After cleaning, the surface is cleaned without residue, and the roughness value is slightly increased, which is conducive to Hair-pin welding.

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