1. Integrated automatic loading and unloading, battery core sorting, battery polarity detection, voltage resistance test, plastic film, scanning code electric core box, connector assembly, CCD visual detection, positive and negative pole welding etc. 2. According to the welding process requirements, spot welding and line welding is optional 3. Modular design, each function block can work independently and linkage, a variety of laser is optional 4. Welding material: aluminum alloy or nickel or copper alloy (thickness t=0.3-2mm)