Current collector, battery cell, battery pack, and vehicle including the same

A battery cell comprising:

• an electrode assembly including a first electrode and a second electrode with a separator interposed therebetween, and the first electrode, second electrode and separator being wound around a winding axis in a winding direction to define a core and an outer peripheral surface, wherein the first electrode includes a first uncoated portion, which is not coated with an active material layer, along the winding direction;
• a battery housing having an opening at one side thereof and configured to accommodate the electrode assembly through the opening;
• and
• a current collector including a support portion disposed directly on the electrode assembly, a tab coupling portion extending from the support portion and directly coupled to the first uncoated portion, and a housing coupling portion extending from the support portion and electrically coupled to an inner surface of the battery housing,
• wherein a fracture portion configured to have lower strength than a surrounding region is provided at a boundary between the support portion and the tab coupling portion, and
• wherein the fracture portion is configured to be fractured to allow the tab coupling portion to be separated from the support portion.