Patent ID: 9406922
Filing Date: 2016-08-02
CPC Classification: H01M,Y02E,Y02P,Y10T

Claim Text:
1. A secondary battery comprising: one or more anodes having an anode tab attached to the anode; one or more cathodes having a cathode tab attached to the cathode; an electrode assembly formed by stacking the one or more anodes and the one or more cathodes on each other to have a separation film interposed between the anode and the cathode; a pouch receiving the electrode assembly and having an upper portion and a lower portion; an anode tab bonding part electrically connected to overlapped portions of the anode tabs stacked on each other; a cathode tab bonding part electrically connected to overlapped portions of the cathode tabs stacked on each other; an anode lead connected to the anode tab bonding part; a cathode lead connected to the cathode tab bonding part; a lead film encompassing the anode lead and the cathode lead to have a form in which portions of the anode lead and the cathode lead are exposed externally; and a sealing portion formed by allowing an upper pouch and a lower pouch to be subjected to a heat fusion process in a state in which the lead film is interposed between outer edges of the upper pouch and the lower pouch, to then be formed on an outer edge of the pouch, wherein the anode lead and the cathode lead are aligned to be parallel with respect to each other and are encompassed by a single lead film, wherein the lead film includes one or more cut portions having a structure recessed inwardly from the exterior, between the anode lead and the cathode lead, and wherein exterior material of the pouch overlapped with the cut portion is removed to have the same form as that of the cut portion so as not to form the sealing portion.