Soldering connector, and Battery module and Battery pack comprising the same

PURPOSE: A soldering connector capable of enhancing safety of secondary battery, a battery module and a battery pack including the same are provided to rapidly seclude electrical connection between unit cells. CONSTITUTION: A soldering connector(10) is composed of lead-free alloy containing tin and copper, and has a melting point of 100-250 deg. Celsius. The content of tin is 80-99.9 wt% and the content of the copper is 0.01-20 wt%. The soldering connector additionally includes one or more metals selected from nickel and silver. The battery module comprises a plurality of unit cells(20) and the soldering connector.