Patent ID: 11916258
Assignee: LG ENERGY SOLUTION, LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A secondary battery comprising:
an electrode assembly in which a first electrode, a separator, and a second electrode are alternately stacked and wound together;
a can having an accommodation part configured to receive the electrode assembly therein, the can comprising a first can and a second can each having a tubular shape with an opening in a direction facing one another, the first can overlapping the second can at an overlapping portion; and
an insulator having a thickness configured to insulate the overlapping portion between the first can and the second can,
wherein the first can is electrically connected to the first electrode, and the second can is electrically connected to the second electrode,
the insulator includes a short-circuit induction through-part defined by a through-hole or a frangible seam extending through the thickness of the insulator, the short-circuit induction through-part being configured such that when sufficient heat or pressure is applied to contract or expand the insulator, a shape of the short-circuit induction through-part will deform to cause a short circuit between the first can and the second can.