Patent ID: 7501206
Filing Date: 2009-03-10
Classification: H01M,Y02E,Y02P,Y02T

Abstract:
1. A bipolar battery, comprising: a battery element composed by stacking in series a plurality of bipolar electrodes, in each of which a positive electrode is formed on one surface of a collector and a negative electrode is formed on the other surface, with electrolytes interposed therebetween; laminate films covering the battery element, each of the laminate films containing a metal layer, the battery element being hermetically sealed in a space formed by the laminate films; and tabs being electrically connected to the battery element and being drawn from inside of the space to outside of the laminate films so that a part of each tab is exposed to the outside of the laminate films, wherein, in peripheral portions of the laminate films, which are sealed, a resin layer covers around each tab, and thickness of the resin layer interposed between each tab and the metal layer is within a range of 1 to 5 times thickness of each tab in all directions around the tabs.