Lithium polymer secondary battery with external wrapping member

摘要

A secondary battery includes an electrode assembly comprising a first electrode, a second electrode, and a separator between the first electrode and the second electrode; an external member wrapped around a side surface of the electrode assembly; a cover coupled to the external member; and a terminal protection member between the electrode assembly and the cover.

主权项

1. A secondary battery comprising:
an electrode assembly comprising a first electrode, a second electrode, and a separator between the first electrode and the second electrode; an external member wrapped around the electrode assembly, the external member comprising a laminate film having a substantially rectangular sheet shape and comprising an outer layer, a shield layer, and an inner layer stacked together, wherein the external member directly contacts the electrode assembly; a cover directly coupled to the external member; a circuit board comprising a protective circuit on the cover; a secondary protective device spaced from the circuit board and electrically coupled to one of the first electrode and the second electrode; and a terminal protection member directly contacting the electrode assembly and the cover, wherein the terminal protection member comprises a flat surface and an outer wall connected to the flat surface, wherein the outer wall extends towards the electrode assembly from the flat surface and is coupled to the electrode assembly.