Cylindrical Battery, Battery Pack And Vehicle

Abstract: Disclosed are a cylindrical battery, and a battery pack and a vehicle, including same. The cylindrical battery includes: an electrode assembly in which a core and the outer periphery are defined as a first electrode and a second electrode and a separator interposed therebetween are wound around a winding axis; and a cylindrical battery housing which accommodates the electrode assembly. When a first fan-shaped region surrounded by a first straight line and a second straight line which pass through the core-side end of the first electrode and the core-side end of the second electrode, respectively, from the center of the core, and by the outer periphery is defined as a stress-vulnerable region, and a second fan-shaped region surrounded by a third straight line and a fourth straight line which pass through the outer periphery-side end of the first electrode and the outer periphery-side end of the second electrode, respectively, from the center of the core, and by the outer periphery is defined as a stress-amplification region, the electrode assembly has a wound structure in which at least the outer periphery-side end of the first electrode in the stress-amplification region is spaced apart from the inside of the stress-vulnerable region along the circumferential direction.

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