ELECTRODE ASSEMBLY AND CONTAINING THE ELECTRODE ASSEMBLY, ELECTROCHEMICAL CELL

摘要

The present invention relates to the structure of a secondary battery capable of improving contact error. Especially, the present invention is to realize a secondary battery which includes an anode collector, a cathode collector, an electrode lead which is connected to the anode collector or the cathode collector and includes an electrode assembly where a contact pattern for electric contract on the surface of the electrode lead is realized. According to the present invention, the contact error between a lead part and the gripper of a charging/discharging device is prevented by realizing the electrode assembly of a structure where a protrusion type pattern is formed on the surface of the lead part and a secondary battery including the same. Thereby, maintenance costs can be reduced by improving yield and the lifetime of the gripper.