Patent ID: 9722217
Date: 2017-08-01
CPC Classifications: C22C,H01M,Y02E

Claim:
1. A pouch type battery cell comprising: an electrode assembly comprising a first electrode plate, a second electrode plate, and a separator located between the first and second electrode plates; a first case comprising a first accommodating portion in which at least one portion of the electrode assembly is accommodated, wherein the first accommodating portion is generally concave; and a second case covering the first case, wherein the first case and the second case each include a metal layer comprising 3003-O JIS H 4160 and 3004-O JIS H 4160 hard aluminum that has not been annealed located between and directly contacting a first and a second insulating layer, and wherein a depth of the first accommodating portion is between about 1 mm and about 4 mm, and wherein a thickness of the metal layer is between about 40 μm and about 100 μm.