BATTERY CELL OF IMPROVED CONNECTION RELIABILITY AND BATTERY PACK COMPRISING THE SAME

摘要

PURPOSE: A battery cell improves bonding force between an electrode lead and an electrode tab even if an external impact or vibration is applied. CONSTITUTION: A battery cell has an electrode assembly with a positive electrode/separator/negative electrode structure accommodated in the accommodation part of a battery case; electrode tab on which active material is not spread is protruded from each electrode plate composing the electrode assembly; and an electrode lead (60) which electrically connects the electrode tabs and is placed at one end of the electrode tabs. In the electric connection part of the electrode tabs and electrode leads, the electrode leads are injected into the electrode tabs with physical bonding force.