Patent ID: 6103424
Filing Date: 2000-08-15
Classification: H01M,Y02E,Y02P

Abstract:
A battery comprising:a rectangular battery case including a container having a closed bottom end, an open top end, and a cover sealed on said open top end of said container such that said battery case is airtight; andan electrode group inserted into said container, said electrode group including:a plurality of negative electrodes;a plurality of positive electrodes, wherein said negative and positive electrodes are stacked alternately and define first and second outermost electrodes, wherein said first and second outermost electrodes are disposed on opposite ends of said electrode group and have the same polarity;separators for separating said positive electrodes from said negative electrodes,wherein each of said first and second outermost electrodes includes a core plate having an inner surface facing an adjacent electrode and an outer surface facing and directly contacting an inner surface of said battery case; andan active substance held on said inner surface of said core plate, wherein said core plate outer surface has no active material thereon.