Secondary battery for medium and large size battery module

Abstract

Disclosed herein is a secondary battery for medium- or large-sized battery modules. The secondary battery is assembled while an electrically connecting member used at the time of manufacturing a battery module is previously welded to at least one of electrode terminals of the secondary battery.

1 . A secondary battery for medium- or large-sized battery modules, wherein 
 the secondary battery is assembled while an electrically connecting member used at the time of manufacturing a battery module is previously welded to at least one of electrode terminals of the secondary battery.    
   
   
       2 . The secondary battery according to  claim 1 , wherein the secondary battery is a pouch-shaped battery having an electrode assembly mounted in a pouch-shaped sheet case including a high-polymer resin layer and a metal layer in a sealed state.  
   
   
       3 . The secondary battery according to  claim 1 , wherein the connecting member is a bus bar.  
   
   
       4 . The secondary battery according to  claim 1 , wherein the connecting member is coupled to an electrode terminal from which relatively high heat is generated during welding and/or which is needed to be welded for a relatively long period of time.  
   
   
       5 . The secondary battery according to  claim 1 , wherein, when a cathode terminal of the secondary battery is made of aluminum, an anode terminal of the secondary battery is made of copper, and the bus bar is made of copper, the bus bar is welded to the cathode terminal before the secondary battery is assembled.  
   
   
       6 . The secondary battery according to  claim 1 , wherein the connecting member is provided at one end thereof with a connection coupling part, which is electrically connected to an external input and output terminal.  
   
   
       7 . The secondary battery according to  claim 1 , wherein the electrode terminals of the secondary battery are electrode leads connected to pluralities of electrode taps.  
   
   
       8 . The secondary battery according to  claim 1 , wherein secondary batteries are assembled while the connecting member is welded to cathode and anode terminals of the secondary batteries.  
   
   
       9 . A battery module constructed using a secondary battery according to  claim 1 .  
   
   
       10 . A battery module constructed using a secondary battery according to  claim 2 .  
   
   
       11 . A battery module constructed using a secondary battery according to  claim 3 .  
   
   
       12 . A battery module constructed using a secondary battery according to  claim 4 .  
   
   
       13 . A battery module constructed using a secondary battery according to  claim 5 .  
   
   
       14 . A battery module constructed using a secondary battery according to  claim 6 .  
   
   
       15 . A battery module constructed using a secondary battery according to  claim 7 .  
   
   
       16 . A battery module constructed using a secondary battery according to  claim 8.