Secondary battery
The secondary battery includes: a can, and electrode assembly disposed in the can; a protection circuit board disposed around an opening of the can, including an external connection terminal; a double-coated adhesive tape interposed between the can and the protection circuit board; a cap assembly including a cap-up, to seal the opening of the can; a first lead connected to the protection circuit board and welded to the cap-up; a second lead connected to the protection circuit board and welded to a bead of the can; and a top cover having a terminal hole corresponding to the external connection terminal.
1. A secondary battery, comprising:
a can;
an electrode assembly in the can;
a cap assembly sealing an opening of the can and comprising a cap-up that extends away from the electrode assembly;
a protection circuit board located on a periphery of the opening of the can and comprising an external connection terminal;
a double-coated adhesive tape attaching the can to the protection circuit board;
a first lead extending from the protection circuit board and coupled to the cap-up;
a second lead extending from the protection circuit board and coupled to a bead of the can such that the second lead is exposed on an exterior surface of the can; and
a top cover disposed on the protection circuit board, having a terminal hole through which the external connection terminal is exposed.
2. The secondary battery according to claim 1 , wherein the double-coated adhesive tape is ring-shaped.
3. The secondary battery according to claim 1 , wherein the protection circuit board is ring-shaped.
4. The secondary battery according to claim 1 , wherein the first and second leads comprise nickel.
5. The secondary battery according to claim 1 , wherein the first lead comprises a positive temperature coefficient thermistor.
6. The secondary battery according to claim 1 , wherein the first lead is plate-shaped.
7. The secondary battery according to claim 1 , wherein the first lead is welded to an inner or outer surface of the cap-up.
8. A secondary battery comprising:
a can;
an electrode assembly in the can;
a cap assembly sealing an opening of the can and comprising a cap-up that extends away from the electrode assembly;
a protection circuit board located on a periphery of the opening of the can and comprising an external connection terminal;
a double-coated adhesive tape attaching the can to the protection circuit board;
a first lead extending from the protection circuit board and coupled to the cap-up;
a second lead extending from the protection circuit board and coupled to a crimping part of the can such that the second lead is exposed on an exterior surface of the can; and
a top cover on the protection circuit board and having a terminal hole through which the external connection terminal is exposed.
9. The secondary battery according to claim 8 , wherein the double-coated adhesive tape is ring-shaped and has a cut part.
10. The secondary battery according to claim 8 , wherein the protection circuit board is ring-shaped and has a cut part.
11. The secondary battery according to claim 8 , wherein the first and second leads comprise nickel.
12. The secondary battery according to claim 8 , wherein the first lead comprises a positive temperature coefficient thermistor.
13. The secondary battery according to claim 8 , wherein the first lead is plate-shaped.
14. The secondary battery according to claim 8 , wherein the first lead is welded to an inner or outer surface of the cap-up.
15. The secondary battery according to claim 8 , wherein:
the double-coated adhesive tape is ring-shaped and has a first cut part;
the protection circuit board is ring-shaped, has a second cut part; and the second lead is welded to the can through the first cut part and the second cut part.