Battery pack

摘要

A battery pack having a can housing having an electrode assembly and electrolyte, this can may include a cap plate coupled to an open end of the can. A recess is provided on a surface of the cap plate. A metal plate made of a material different from the cap plate is embedded in the recess. The metal plate includes a plurality grooves on at least one surface.

主权项

1. A battery pack having a can housing an electrode assembly and electrolyte, said can comprising:
a cap plate coupled to an open end of the can; a recess on a surface of the cap plate; a metal plate comprising a material different from the cap plate and embedded in the recess, said metal plate including a plurality of grooves on at least one surface; and a protection circuit module including at least one protection element coupled to a circuit board, a first lead tab coupled to the circuit board and a second lead tab coupled to the circuit board; said metal plate comprises:
a first metal layer; anda second metal layer attached to said first metal layer, wherein the first metal layer is composed of material different from the second metal layer, said second metal layer is welded to the second lead tab.