公开(公告)号：US20180019453A1

公开(公告)日：2018-01-18

申请号：US15555250

申请日：2016-10-27

Applicant: LG CHEM, LTD.

Inventor： Jin Oh YANG ,  Suk Jin SONG ,  Suk Hoon LEE ,  Yeon Ok YI

IPC: H01M2/10 ,  G06F1/16

CPC classification number: H01M2/1022 ,  G06F1/16 ,  G06F1/1635 ,  H01M2/1061 ,  H01M2/1094 ,  H01M2220/30

Abstract: A battery pack that is mounted to a laptop computer, wherein two or more battery cells that can be charged and discharged are housed in a pack case; the battery cells are cylindrical battery cells having a circular vertical cross-section; the pack case is configured with a lower case in which battery cells are received and an upper case that is coupled to the lower case in order to close and seal the battery cells; in the upper case, a thickness of an upper contact point portion that contacts an upper end external circumferential surface of the battery cells is 70% or less of that of the remaining portions of the upper case, and a first sheet is attached to an outer surface of the upper case corresponding to the upper contact point portion; and in the lower case, a thickness of a lower contact point portion that contacts a lower end external circumferential surface of the battery cells is 70% or less of that of the remaining portions of the lower case, and a second sheet is attached to an outer surface of the lower case corresponding to the lower contact point portion.