Metal tab and secondary battery using the same

摘要

A secondary battery and a manufacturing method thereof, the secondary battery including a bare cell having an electrode terminal connected thereto; a protection circuit board (PCB) substrate; and a metal tab to connect the PCB substrate to the electrode terminal, disposed in an accommodating groove of the PCP substrate. The metal tab includes wing portions laid across the accommodating groove, a terminal contact portion that comes in contact with the electrode terminal, and curved portions disposed between the terminal contact portion and the wing portions.

主权项

1. A metal tab connected to an electrode terminal of a bare cell through an accommodating groove formed in a protection circuit board (PCB) substrate, the metal tab comprising:
a terminal contact portion connected to the electrode terminal, extending in a first direction and inserted into the accommodating groove; sidewalls extending from opposing sides of the terminal contact portion, in a second direction that is substantially perpendicular to the first direction; wing portions extending outward from the sidewalls, in the first direction, so as to be seated on the upper surface of the PCB substrate, portions of the wing portions contacting the PCB substrate having widths greater than the sidewalls; and bent portions disposed between the sidewalls and the wing portions, the bent portions being curved, so as to protrude away from the terminal contact portion, above the wing portions, wherein the metal tab includes notches formed where the terminal contact portions contact the sidewalls.