Patent ID: 9728758
Date: 2017-08-08
CPC Classifications: H01M,Y02E,Y02P,Y02T,Y10T

Claim:
1. An electrode assembly comprising at least one negative electrode, at least one positive electrode, and a plurality of separation films, the negative and positive electrodes each having an outer periphery including at least one curved portion defined between adjacent first and second linear side portions, at least one of the separation films having an interposed portion interposed between the at least one negative electrode and the at least one positive electrode, wherein each of the plurality of separation films includes a cut portion formed by cutting the respective separation film so as to correspond to shapes of the negative and positive electrodes, the cut portion having a lower degree of porosity than that of the interposed portion, and wherein each of the cut portions of the plurality of separation films protrude outwardly from the outer periphery of adjacent ones of the positive and negative electrodes along the curved corner portion, such that the cut portions are spaced apart from one another and have the same shape as one another, wherein the plurality of separation films do not protrude outwardly from the outer periphery along the first and second linear side portions.