Battery pack

摘要

A battery pack includes a pouch-type bare cell having a sealing region positioned in an extraction direction of an electrode lead; a protecting circuit module positioned in the sealing region of the bare cell and connected to the electrode lead; and a top case implemented in a shape in which only a surface facing the sealing region is opened and the other surfaces are integrally formed to cover the protecting circuit module. In the battery pack, a bottom surface of the top case comes in surface contact with a top surface of the bare cell, and the shape of the bottom surface of the top case is implemented in a bent shape so as to correspond to the shape of the top surface of the bare cell.

主权项

1. A battery pack comprising:
a pouch-type bare cell having a top surface that is bent and a sealing region positioned in an extraction direction of an electrode lead, wherein the top surface of the pouch-type bare cell is perpendicular to the extraction direction of the electrode lead; a protecting circuit module having a thickness that is positioned adjacent the sealing region of the bare cell and connected to the electrode lead; and a top case having a C-shape that defines an opening that faces the sealing region wherein the other surfaces of the top case, including a bottom surface, are integrally formed to cover the protecting circuit module wherein the opening of the top case has a width that is wider than the thickness of the protecting circuit module and wherein the top case is mounted on the to surface of the pouch-type bare cell so that the opening extends in a direction that is perpendicular to the top surface of the pouch-type bare cell and wherein the electrode lead extends into the top case and is connected to the protecting circuit module inside the top case via the opening in the top case, wherein the bottom surface of the top case comes in surface contact with the top surface of the bare cell, and the shape of the bottom surface of the top case is implemented in a bent shape so as to correspond to the shape of the top surface of the bare cell.