Surface treated steel sheet for battery case, battery case and battery using the case
AssigneeTokyo Kohan Co. Ltd.
InventorsHitoshi Ohmura, Tatsuo Tomomori, Yoshitaka Honda
Life of this patent
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Abstract
A surface treated steel sheet for a battery case, which has a diffusion layer of a nickel-phosphorus alloy or a nickel-cobalt-phosphorus alloy formed on the outermost layer of the inside surface of a plated steel sheet for a battery case; a battery case which is produced through forming the surface-treated steel sheet having a diffusion layer of a nickel-phosphorus alloy or a nickel-cobalt-phosphorus alloy by the deep drawing method, the DI forming or the DTR forming: and a battery using the battery case. The battery case can be used for producing a battery excellent in battery characteristics.
Claims22
A surface treated steel sheet for a battery case in which a diffusion layer of a nickel-phosphorus alloy is formed at a surface on the inner side of the battery case.
A surface treated steel sheet for a battery case, in which a diffusion layer of a nickel-cobalt-phosphorus alloy is formed at the surface on the inner side of the battery case.
A battery case in which a diffusion layer of a nickel-phosphorus alloy is formed on the inner side.
A battery case in which a diffusion layer of a nickel-cobalt-phosphorus alloy is formed on the inner side.
Dependencies are inferred from the claim text.