Battery cell of curved shape and battery pack employed with the same

摘要

Disclosed herein is a battery cell configured such that an electrode assembly of a cathode/separator/anode stack structure is mounted in a changeable cell case in a state in which the electrode assembly is impregnated with an electrolyte, wherein the electrode assembly and the cell case are curved in the same direction on axial vertical sections thereof in a state in which opposite ends of the electrode assembly and opposite ends of the cell case are directed in the same direction about a middle part of the electrode assembly and a middle part of the cell case.

主权项

1. A manufacturing method of a curved battery cell having a curved portion, comprising:
(a) providing an electrode assembly in a chargeable battery cell; (b) placing the battery cell between upper and lower jigs having a predetermined radius of curvature and moving at least one of the upper and lower jigs toward the other of the upper and lower jigs to press the battery cell; and (c) separating the upper and lower jigs from each other to remove the battery cell from the upper and lower jigs, wherein the manufacturing method further comprises initially charging the chargeable battery prior to moving the upper and lower jigs toward each other.