Lead plate with a joint portion having a surface area smaller than that of its mounting portion

摘要

A lead plate for connecting a printed circuit board (PCB) of a secondary battery to an bare cell includes a mounting portion connected to the PCB, a joint portion connected to the bare cell, a surface area of the joint portion facing the bare cell being smaller than a surface area of the mounting portion facing the PCB, and a step portion connecting the mounting portion and the joint portion to each other.