Battery Cell And Bonding Apparatus For Manufacturing Same

Abstract: A battery cell according to an embodiment of the present invention comprises: an electrode assembly comprising a plurality of electrodes stacked with separators interposed therebetween; and a battery case accommodating the electrode assembly, wherein the electrode assembly comprises a plurality of electrode tabs extending respectively from the plurality of electrodes and comprising an electrode tab bundle portion formed by coupling tabs of a same polarity, and a pattern portion on at least one surface of the electrode tab bundle portion. The pattern portion comprises a plurality of sub-patterns which are arranged in rows along the transverse direction and longitudinal direction of the electrode tabs, and the sub-pattern has a concave shape in the height direction of the electrode tab bundle portion and corners of the pattern portion respectively have chamfered portions.

Patent Information

Applicants

Inventors

Specification

Documents

Application Documents