WELDING POSITIONING APPARATUS, BATTERY PRODUCTION LINE, AND WELDING METHOD

A welding positioning apparatus includes a carrier and a pressing module. The carrier includes a pressing region and placement regions, where the pressing region is formed between two placement regions spaced apart along a first direction. The pressing module includes a pressing block and a driving apparatus, where the driving apparatus is drivingly connected to the pressing block to drive the pressing block to move toward the pressing region along a second direction. A side of the pressing block facing the pressing region is provided with a pressing surface and an avoidance space. The pressing surface is configured to press a portion of a tab of an electrode assembly along the second direction. The avoidance space is located on a side of the pressing surface along the first direction and is open on a side facing the pressing region.