Rechargeable battery

Abstract

A rechargeable battery according to an exemplary embodiment of the present invention includes a case, an electrode assembly received by the case, a cap plate combined with the opening of the case, a protective circuit board electrically connected with a first electrode of the electrode assembly, and a protective device attached on a top surface or side surface of the protective circuit board, electrically connected with a second electrode of the electrode assembly, and electrically connected with the protective circuit board.

What is claimed is: 
     
         1 . A rechargeable battery comprising:
 a bare cell comprising:
 a case for housing an electrode assembly, and 
 a cap plate for capping an opening of the case; and 
   a protective circuit module comprising:
 a protective circuit board electrically connected with a first electrode of the electrode assembly, and 
 a protective device comprising:
 a first protective device portion mounted to a first surface of the protective circuit board to be electrically connected with the protective circuit board, 
 a second protective device portion electrically connected with a second electrode of the electrode assembly and mounted on a second surface of the protective circuit board, the second surface facing oppositely away from the first surface, and 
 a third protective device portion mounted on a third surface of the protective circuit board to electrically connect the first protective portion with the second protective device portion, 
 the first surface of the protective circuit board being connected with the second surface of the protective circuit board via the third surface of the protective circuit board. 
 
   
     
     
         2 . The rechargeable battery of  claim 1 , wherein:
 the first protective device portion comprises a protective device body and a protective device protrusion extending at one side of the protective device body and electrically connected with the first electrode on the first surface of the protective circuit board, the protective device body comprising a protective chip or lead; and   the second protective device portion comprises a fixing part electrically connected with the second electrode on the second surface of the protective circuit board.   
     
     
         3 . The rechargeable battery of  claim 1 , wherein:
 the third protective device portion comprises:
 a protective device body extending from and attached to the third surface of the protective circuit board, and 
 a protective device supporting part body; 
   the protective device body comprises a protective chip or lead;   the protective device supporting part body supports a surface of the protective device body;   the first protective device portion comprises a protective device protrusion extending at one side of the protective device body and electrically connected with the first electrode on the first surface of the protective circuit board; and   the second protective device portion comprises a supporting part protrusion extending at one side of the protective device supporting part body and electrically connected with the second electrode on the second surface of the protective circuit board.   
     
     
         4 . The rechargeable battery of  claim 3 , wherein the length of the protective circuit board is less than the length of the protective circuit module. 
     
     
         5 . The rechargeable battery of  claim 3 , wherein the length of the protective circuit module encompasses both the length of the protective device body and the length of the protective circuit board. 
     
     
         6 . The rechargeable battery of  claim 1 , wherein:
 the third protective device portion comprises a protective device body extending from and attached to the third surface of the protective circuit board;   the protective device body comprises a protective chip or lead;   the first protective device portion comprises a first protective device protrusion extending at one side of the protective device body and electrically connected with the first electrode on the first surface of the protective circuit board; and   the second protective device portion comprises a second protective device protrusion also extending at the one side of the protective device body, separated from the first protective device protrusion, and electrically connected with the second electrode on the second surface of the protective circuit board.   
     
     
         7 . The rechargeable battery of  claim 6 , wherein the protective device body is integrally provided with the first protective device protrusion and the second protective device protrusion.