Patent ID: 9614194
Date: 2017-04-04
CPC Classifications: H01M,Y02E,Y02P,Y02T

Claim:
1. A battery comprising: an electrode group comprising a case comprising a case portion where the electrode group is housed and an edge portion provided at a circumference of the case portion, the edge portion comprising a heat sealed part and a non-sealed part, the heat sealed part comprising a bonding portion where sealant layers are bonded to each other through heat sealing; a positive electrode lead electrically connected to an end portion of the at least one positive electrode current collector tab such that an end portion extends outwardly through the edge portion of the case; and a negative electrode lead electrically connected to an end portion of the at least one negative electrode current collector tab such that an end portion extends outwardly through the edge portion of the case, wherein the electrode group is housed in the case portion while the end portion of at least one of the positive electrode current collector tab and the negative electrode current collector tab is directly nipped by the non-sealed part of the edge portion of the case forming a nipped portion, wherein the negative electrode current collector tab and positive electrode current collector tab are only contained in the nipped portion.