Sealed battery

a b a b a b a b a b The center pin is cylindrical and tube-shaped, and each of the planes formed by the external surface of the center pin in the vicinity of the edges and of the slit is angled toward the inside of the center pin . The edges and are therefore arranged to be more inward than the imag...

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Bibliographic Details
Main Authors Iwanaga, Masato, Yamashita, Syuichi, Ogi, Masanori, Yasutake, Zensaku
Format Patent
LanguageEnglish
Published 22.03.2005
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Summary:a b a b a b a b a b The center pin is cylindrical and tube-shaped, and each of the planes formed by the external surface of the center pin in the vicinity of the edges and of the slit is angled toward the inside of the center pin . The edges and are therefore arranged to be more inward than the imaginary circumference that complements the gap from the slit of the center pin , and consequently, the edges and have less possibility of contacting and damaging the spiral-wound electrode assembly in the event an external force deforms the center pin Further, the planes formed by the external surface of the center pin in the vicinal areas and of the edges and are angled so as to form an angle of no greater than 120 degrees.