SQUARE BATTERY CONTAINER, METHOD OF MANUFACTURING THE CONTAINER, AND SQUARE BATTERY USING THE CONTAINER

摘要

A method of manufacturing a square battery container, comprising a first step for forming an intermediate cup body (8) by impact-forming a pellet (7) of a specified shape and a second step of forming a square battery container (9) of generally rectangular shape in cross section by continuously drawing and ironing the intermediate cup body (8) simultaneously by DI processing, whereby the square battery container with a high dimensional accuracy can be manufactured while increasing a productivity.