BATTERY CELL HAVING LEAD-TAP JOINT OF IMPROVED COUPLING FORCE

摘要

The present invention relates to a battery cell having a lead-tap joint having an improved binding force. More specifically, by connecting more than two anodes with an anode lead an anode terminal is formed, and, by connecting more than two cathodes with a cathode a cathode terminal is formed. The anodes and cathodes respectively have anode taps and cathode taps which are not coated with active materials, protruded from current collectors, and the anode taps and cathodes taps are coupled to respective anode leads and cathode leads to form electrode lead-electrode tap binding portions. On the electrode lead-electrode tap binding portions, at least either of the anode or cathode has the electrode leads bound to the electrode taps, in a condition wherein the contact surface area between the electrode leads and electrode taps becomes maximum.