BATTERY AND ITS MANUFACTURE

摘要

PROBLEM TO BE SOLVED: To provide a battery having a battery case having improved energy density, improved insulating characteristic, no seal leaks and high reliability and its manufacturing method. SOLUTION: In this battery, a battery body 7 is contained in a battery case 1 composed by a laminate material comprising a metallic foil 5 and its armor materials 6a, 6b with an electrode terminal 3 projected from an end part of the case 1. Sealing material 4 to be weld with the armor material 6a and the terminal 3 is intervened between a sealing part 2 of the case 1 in which the terminal 3 is projected therefrom to seal the case 1 by heat-welding. An insulating film 9 thicker than the sealing material 4 is arranged at the end part of the case 1 in which the terminal 3 is projected therefrom.