The ultrasonic metal welding machine adopts a German ultrasonic system, which ensures firm welding points, is not easily oxidized, has low internal resistance, fast speed, is safe and aesthetically pleasing, and is easy to operate. Used for pre welding of lithium battery foil and welding of foil and current collector. Welding of cables to electronic components or connectors, and welding of nickel mesh and nickel sheets for nickel hydrogen batteries.