Patent ID: 7427453
Filing Date: 2008-09-23
Classification: H01M,Y02E,Y02P

Abstract:
1. A pouched lithium secondary battery comprising: a battery unit comprising: a positive electrode tab electrically connected with the positive electrode plate, comprising an exposed portion, and insulating tapes flanking the exposed portion; a negative electrode tab electrically connected with the negative electrode plate, comprising sealing tape wound thereon, to insulate the negative electrode tab from the intermediate layer of the case; a case comprising an intermediate layer comprising a metal thin film, and internal and external layers coated on opposite surfaces of the intermediate layer, respectively, and having a space to accommodate the battery unit, and a sealing edge around the space; and a positive electrode voltage applying unit to apply a positive electrode voltage to both the positive electrode tab and the case, wherein the positive electrode voltage applying unit comprises the exposed portion of the positive electrode tab, which is electrically connected to an exposed portion of the intermediate layer.