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US 2026/0100488 A1Published application
Secondary battery
AssigneeSamsung SDI Co., Ltd.
InventorsHyun Soo LEE, Jun Sun YONG
Life of this patent
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Abstract
A secondary battery, according to embodiments of the present disclosure, exhibits a reduced decrease in capacity by slimming a current collecting structure. By reducing the space occupied by the current collecting structure in the longitudinal direction of an electrode assembly, the size of the electrode assembly may be increased.
Claims20
A cap assembly comprising:
- a cap plate;
- a terminal part disposed at one side of the cap plate;
- and
- a current collecting part comprising a sub-plate electrically connected to the terminal part,
- wherein the sub-plate comprises a plurality of concave welding grooves on at least one plate surface.
2 more elements
A secondary battery comprising:
- a case comprising an opening at one side;
- an electrode assembly accommodated in the case and comprising a first substrate tab and a second substrate tab disposed in opposite directions along a longitudinal direction of the case;
- and
- a cap assembly, the cap assembly comprising:
- a cap plate coupled to the opening of the case;
- a first terminal part disposed at one side of the cap plate;
- a second terminal part disposed at the other side of the cap plate;
- a first current collecting part comprising a sub-plate electrically connected to the first terminal part;
- and
- a second current collecting part comprising a sub-plate electrically connected to the second terminal part,
- wherein the sub-plate of each of the first current collecting part and the second current collecting part comprises a plurality of concave welding grooves on at least one plate surface, and
- wherein the first substrate tab and the second substrate tab are welded to the welding grooves.
9 more elements
Dependencies are inferred from the claim text.