METHOD FOR CONTROLLING A BATTERY-POWERED WELDING DEVICE, AND BATTERY-POWERED WELDING DEVICE

摘要

The invention relates to a method for controlling a battery-powered welding device (1) and to a battery-powered welding device (1) comprising a battery (2) having a battery voltage (Uin) and a battery current (Iin) and comprising a welding controller (3) containing a boost converter (4) having at least a switch (5) and a buck converter (6) having at least one switch (7) for regulating a welding current (Iout) and a welding voltage (Uout) supplied to a welding torch (11). In order to achieve a high level of efficiency and dynamics and optimal welding characteristics a switch (8) for bypassing the boost converter (4) is provided, which switch(8) is connected to a switch controller (9), which switch controller (9) is designed to close the switch (8) if the intermediate circuit voltage (Uzw) between the boost converter (4) and the buck converter (6) is less than or equal to the battery voltage (Uin), and to open the switch (8) if the boost converter (4) is activated.