BATTERY CAN, BATTERY USING THE SAME, AND METHOD FOR MANUFACTURING THE SAME

摘要

A battery can is manufactured by drawing and ironing a nickel plated steel plate. The nickel plated steel plate includes a steel plate and a nickel plating layer made of nickel grains layered. Nickel grains present in a surface portion of the nickel plating layer are greater than nickel grains present in the vicinity of the interface with the steel plate.