Secondary battery
A secondary battery is provided in which a first electrode (negative electrode) terminal and a second electrode (positive electrode) terminal may be concurrently (e.g., simultaneously) implemented in a cap assembly. A secondary battery includes: a case including a beading part and a crimping part; an electrode assembly physically coupled to the case and including a first electrode plate and a second electrode plate, the first electrode plate being electrically connected to the case; a first insulating gasket between the beading part and the crimping part; a cap plate coupled between the beading part and the crimping part through the first insulating gasket; a second insulating gasket extending through and coupled to the cap plate; and a rivet terminal extending through and physically coupled to the second insulating gasket, wherein the rivet terminal is electrically connected to the second electrode plate of the electrode assembly.
1 . A secondary battery comprising:
a case comprising a beading part and a crimping part;
an electrode assembly physically coupled to the case and comprising a first electrode plate and a second electrode plate, the first electrode plate being electrically connected to the case;
a first insulating gasket between the beading part and the crimping part;
a cap plate coupled between the beading part and the crimping part through the first insulating gasket;
a second insulating gasket extending through and coupled to the cap plate; and
a rivet terminal extending through and physically coupled to the second insulating gasket, and
wherein the rivet terminal is electrically connected to the second electrode plate of the electrode assembly.
2 . The secondary battery of claim 1 , wherein the crimping part and the cap plate are connected to each other.
3 . The secondary battery of claim 1 , wherein an outer surface of the crimping part and the cap plate are connected to each other by a conductive adhesive.
4 . The secondary battery of claim 1 , wherein an inner surface of the crimping part and the cap plate are connected to each other by a conductive adhesive.
5 . The secondary battery of claim 1 , wherein the crimping part and the cap plate are connected to each other by a welding region.
6 . The secondary battery of claim 5 , wherein the welding region is provided on a partial region of the crimping part or is provided on an entire region of the crimping part.
7 . The secondary battery of claim 1 , wherein an inner insulator is on an inner surface of the cap plate.
8 . The secondary battery of claim 1 , wherein the cap plate comprises:
a cap plate-peripheral region coupled between the beading part and the crimping part;
a cap plate-inclined region extending from the cap plate-peripheral region and inclined upward; and
a cap plate-center region extending from the cap plate-inclined region and coupled to the second insulating gasket and the rivet terminal.
9 . The secondary battery of claim 8 , wherein an outer surface of the crimping part and an outer surface of the cap plate-center region are coplanar.
10 . The secondary battery of claim 1 , wherein the case further comprises a bottom surface, and the bottom surface comprises a safety vent.
11 . The secondary battery of claim 1 , wherein the second electrode plate of the electrode assembly is electrically connected to the rivet terminal through a second lead tab.
12 . The secondary battery of claim 10 , wherein the first electrode plate of the electrode assembly is electrically connected to the safety vent through a first lead tab.