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1. (WO2017154999) BATTERY PACK

Pub. No.:    WO/2017/154999    International Application No.:    PCT/JP2017/009325
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Thu Mar 09 00:59:59 CET 2017
IPC: H01M 2/04
H01M 2/02
H01M 2/12
H01M 2/22
H01M 2/26
H01M 4/62
H01M 10/0585
H01M 10/48
Applicants: NISSAN MOTOR CO., LTD.
Inventors: SATOU, Hajime
佐藤 一
OHSAWA, Yasuhiko
大澤 康彦
草地 雄樹
AKAMA, Hiroshi
赤間 弘
HORIE, Hideaki
堀江 英明
MIZUNO, Yusuke
水野 雄介
EMORI, Yusuke
江守 悠祐
IMAISHI, Takahiro
今石 高寛
[Problem] To provide a battery pack allowing, even if an electrode surface area is large, an appropriate pushing pressure to be applied readily onto a layered body comprising single cells that have been layered. [Solution] The invention comprises: the layered body 140 wherein single cells 10 are layered; a cell case 120 having a first opening portion 126 and having the layered body 140 disposed therein; and a first lid member 170 sealing the first opening portion 126. The first opening portion 126 is positioned in such a manner as to face a surface 142 of the layered body 140 in the single cell layering direction S. The first lid member 170 is configured in such a manner that, if the internal pressure of the cell case 120 is lower than the atmospheric pressure, the first lid member 170 deforms while maintaining a sealed state, abuts the surface 142 of the layered body 140, and applies onto the abutted surface a pressure that is based on the pressure difference between the atmospheric pressure and the cell case 120 internal pressure.