Patent ID: 7468220
Filing Date: 2008-12-23
Classification: H01M,Y02E

Abstract:
1. A film covered battery comprising: a battery element having a positive electrode and a negative electrode opposing each other; lead terminals connected to said positive electrode and said negative electrode of said battery element, respectively; a flexible casing for sealing said battery element and said lead terminals together with an electrolytic solution, said lead terminals partially extending from said casing; a buffer formed in at least a portion of said casing for accumulating a gas generated within said casing through deformation of said casing, said buffer being formed continuously with a region in which said battery element is accommodated; wherein said film covered battery comprises said buffer above and below said battery element, said lower buffer being limited in deformation of said casing; and a casing presser member at a position corresponding to said lower buffer for pressing said casing from the outside thereof.