Secondary battery including a fixing part on the inside of the can with a defined distance between the fixing part and the electrode assembly

摘要

A secondary battery including a fixing part on the inside of the can is disclosed. In one embodiment, the battery includes an electrode assembly having a diameter of L2, a can housing the electrode assembly and at least one fixing portion extending from an inner wall of the can toward an outer surface of the electrode assembly. In one embodiment, L1 is defined as the shortest distance between two portions of the inner wall of the can which are substantially directly opposing with respect to each other. The electrode assembly is separated from the fixing part by a gap such that the electrode assembly is prevented from contacting the can.

主权项

1. A secondary battery comprising:
an electrode assembly having a diameter of L2; a can housing the electrode assembly and having a top and a bottom; and at least one fixing part extending from an inner wall of the can toward an outer surface of the electrode assembly, wherein L1 is defined as the shortest distance between two portions of the inner wall of the can which are directly opposing with respect to each other, wherein the fixing part does not contact the outer surface of the electrode assembly, wherein the electrode assembly is separated from the fixing part by a gap such that the electrode assembly is prevented from contacting the can, and wherein the electrode assembly has a first height measured in a first direction from the bottom of the can to the top of the can, wherein the fixing part has a second height measured in the first direction, and wherein the second height is equal to or greater than the first height.