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1. (WO2018084439) BATTERY SYSTEM

Pub. No.:    WO/2018/084439    International Application No.:    PCT/KR2017/010829
Publication Date: Sat May 12 01:59:59 CEST 2018 International Filing Date: Fri Sep 29 01:59:59 CEST 2017
IPC: H01M 2/12
H01M 2/10
H01M 10/613
H01M 10/6562
H01M 10/6551
Applicants: SAMSUNG SDI CO., LTD.
삼성에스디아이 주식회사
Inventors: GOLUBKOV, Andrej
The present invention relates to a battery system comprising at least one plurality of aligned battery cells arranged along a first direction. Each battery cell comprises a battery case in which an electrode assembly is accommodated, a cap assembly disposed in the battery case, and a vent hole provided in the cap assembly. The battery system further comprises a battery system cover for covering the plurality of aligned battery cells. The battery system cover comprises at least one ridge portion disposed on a lower surface and facing the plurality of aligned battery cells. The ridge portion extends along the first direction so as to be aligned with the vent holes formed in the plurality of aligned battery cells, and the ridge portion is configured to deflect gases ejected from the vent holes along a second direction substantially perpendicular to the first direction. The gases ejected from the battery cells are dispersed away from an adjacent cell disposed along the first direction, and thus the battery system may reduce the risk of thermal runaway propagation.