“Three electrical systems”(Battery, motor, electronic control) is the core of new energy vehicles, an important component that affects the overall performance of the vehicle, and also a standard for measuring whether a car has hardcore strength. With the rapid growth of sales of new energy vehicles, the development of three electric technologies for new energy vehicles is evident. During this process, laser equipment quickly released more market demand with its advantages of high safety, high automation level, and high precision.

Compared to single spot laser welding, light beam laser weldingFRM ring spot series laserDuring the welding process, it can be achieved that there is almost no spatter, explosion points, pinholes, or pits, and the surface is uniform and consistent, greatly improving the production yield.

01Square battery laser welding - Busbar welding

Busbar welding is mainly used for overlay welding of aluminum alloy materials. The Guanghui Laser FRM adjustable beam laser series products can easily achieve a welding speed of ≥ 100mm/s during the welding process, without spatter, and the surface of the weld seam is well formed. From the cross-section, it can be seen that there are no pores at the weld seam, which is uniform and consistent. The width of the weld seam connection can reach 2.3mm, and the shear force of the welded joint between the bar plate and the pole column is greater than 1kN.

02Square battery laser welding - pole welding

The battery pole refers to the positive and negative poles of the battery. Generally, the positive pole is made of aluminum and the negative pole is made of copper. When welding, while meeting the design requirements for tensile strength and conductivity, the optical fiber laser with adjustable beam FRM can achieve higher stability and less spatter in aluminum aluminum structure welding and copper structure welding of electrode columns, thereby improving welding yield.

03Laser welding of cylindrical batteries - sealing welding

The main material for sealing welding is the top cover or battery cell shell (aluminum Al3003). During the sealing welding process of Guanghui Laser FRM products, the welding speed is ≥ 200m/s, the penetration depth is>1.0mm, and there is no burning or melting of the pole and plastic parts. There is no virtual welding, welding slag, or explosive holes at the welding connection, and there are no pores or cracks inside the weld seam.

04Laser welding of cylindrical batteries - sealing nail welding

Sealed nail welding, also known as liquid injection welding, requires a rubber plug to be inserted immediately after the electrolyte is injected into the battery for laser welding sealing, thereby isolating the entire coil from the external environment and forming a closed electrochemical system. The FRM series products can achieve a welding speed of ≥ 60mm/s, with no spatter during the welding process, beautiful and uniform weld formation without explosive holes, greatly improving the first pass yield of the production line.

05Flat wire motor welding

Copper, as the main material for electric drive motor systems, is prone to a large amount of splashing and porosity during the processing due to factors such as absorption rate and thermal conductivity. Guanghui Laser FRM products can effectively correct the shape of keyholes, maintain keyhole stability, and improve the welding quality and efficiency of flat copper wires.

The leading position of GW Guanghui Laser in the field of new energy battery welding is not only reflected in its excellent product performance, but also in its attention and service to customers. We will always adhere to the principle of "putting users at the center", work closely with global users through unremitting technological innovation and high-quality services, provide customers with high-performance and efficient laser solutions, inject new technological directions into the industry, and stimulate unlimited possibilities.