Battery cell with improved weldability and apparatus for processing the same

A battery cell processing apparatus, the battery cell processing apparatus being configured to process a battery cell, the battery cell processing apparatus comprising:

• a base portion having a seating die provided on an upper surface thereof, the seating die being configured to support a cell case and a pair of electrode leads;
• a vertical fixing portion fixed to a predetermined region of one side of the base portion so as to be perpendicular to the base portion;
• a block portion connected by a first connection portion to the vertical fixing portion so as to be movable upwards and downwards relative to the vertical fixing portion;
• a pair of cutters located at a bottom surface of the block portion, the pair of cutters being configured to cut a negative electrode lead and a positive electrode lead respectively, the pair of cutters being spaced apart from each other by a predetermined distance;
• and
• a pair of support portions located at the bottom surface of the block portion, the pair of support portions being located parallel to the pair of cutters in a horizontal direction, respectively,
• wherein:
• one of the pair of support portions is provided on a bottom surface thereof with protrusions configured to form one or more embossed portions in the negative electrode lead,
• wherein the battery cell comprising:
• an electrode assembly received in the cell case;
• and
• the pair of electrode leads constituted by the negative electrode lead and the positive electrode lead protruding outwards from the cell case,
• wherein the negative electrode lead comprises a nickel material and is provided with the one or more embossed portions, and
• wherein the positive electrode lead comprises an aluminum material and is provided with no embossed portion.