Lithium-ion battery is a kind of secondary battery (rechargeable battery), which mainly relies on the movement of lithium ions between the positive and negative electrodes to work. As a new type of clean energy, lithium batteries can not only power new energy vehicles, but also power various products such as electric trains, electric bicycles, and golf carts. The production of lithium-ion batteries includes three parts: pole piece manufacturing, battery cell manufacturing and battery assembly. Lasers are widely used in the production process of lithium-ion batteries.
Laser cleaning can be used to clean the pole piece before coating, before battery welding and during battery assembly. Laser welding can be used for explosion-proof valve welding, tab welding, soft connection welding, helmet spot welding, battery shell sealing welding, module and PACK welding of lithium-ion batteries. Laser cutting is a key process in the manufacture of new energy batteries. Lasers can be used to cut and drill battery tabs, pole pieces, and various conductive materials. The application of lasers in the production of new energy batteries is conducive to improving production efficiency, effectively reducing costs, and improving product quality.
A solar cell is a photoelectric semiconductor sheet that uses sunlight to directly generate electricity. In the solar cell industry, laser processing is mainly used in laser grooved buried grids, laser scribing thin film batteries, and laser drilling to make back contact solar cells. At present, the leading product in the photovoltaic market is crystalline silicon solar cells. In the production process of crystalline silicon solar, lasers can be used to cut wafers and insulate edges. With its rapid, precise, and good thermal effect, the laser has demonstrated its outstanding superiority in the production of solar cells.