Cylindrical secondary battery
AssigneeSamsung SDI Co., Ltd.
InventorsHyun Ki Jung, Woo Hyuk Choi
Life of this patent
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Abstract
A cylindrical secondary battery includes: an electrode assembly including a first electrode plate and a second electrode plate; a can having a bottom portion and a cylindrical side portion, accommodating the electrode assembly, and electrically connected to the first electrode plate; and a cap assembly. The cap assembly includes: a cap plate coupled to one end of the side portion of the can and electrically connected to the second electrode plate; a gasket insulating the cap plate and the side portion from each other; and a sub-plate covering at least a portion of the cap plate and at least a top portion of the side portion.
Claims7
A cylindrical secondary battery comprising:
- an electrode assembly comprising a first electrode plate and a second electrode plate;
- a can having a bottom portion and a cylindrical side portion, accommodating the electrode assembly, and electrically connected to the first electrode plate;
- and
- a cap assembly comprising:
- a cap plate coupled to one end of the side portion of the can and being electrically connected to the second electrode plate;
- a gasket insulating the cap plate and the side portion from each other;
- and
- a sub-plate covering at least a portion of the cap plate and at least a top portion of the side portion,
- wherein the sub-plate comprises:
- a base;
- a plurality of extending portions extending outwardly from an outer edge of the base;
- and
- arc-shaped bending portions respectively extending from an end of each of the extending portions in a circumferential direction of the base, and
- wherein the bending portions have an arc shape that matches a circumferential shape of the side portion of the can.
Dependencies are inferred from the claim text.