BATTERY MODULE HAVING IMPROVED HEAT DISSIPATION, BATTERY PACK COMPRISING SAID BATTERY MODULE, AND VEHICLE COMPRISING SAID BATTERY PACK

Provided are a battery module that improves heat dissipation by causing electronic cooling to occur at a specific voltage or higher, a battery pack including the battery module and a vehicle including the battery pack. The battery module including a plurality of battery cells and lead junction parts in which respective leads of the battery cells are joined to each other includes a thermoelectric device mounted onto the lead junction part; and a constant voltage device configured to divert a current of the battery module to the thermoelectric device when an overcharge of the battery module occurs, and wherein the thermoelectric device is driven to electronically cool the lead junction part of the battery module when the overcharge of the battery module occurs.