SOLDERING CONNECTOR, BATTERY MODULE HAVING THE SAME AND BATTERY PACK COMPRISING THE BATTERY MODULE.

The soldering connector according to the present invention, which electrically connects a plurality of unit cells to each other, comprises a lead-free alloy including tin (Sn) and copper (Cu). [0002] According to the present invention, when a secondary battery overheats due to the malfunction thereof, electrical connection between unit cells comprised in a battery module rapidly disconnects under a relatively low temperature and current range, thereby ensuring the safety of the secondary battery.