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1. (WO2018020906) RECTANGULAR SECONDARY BATTERY

Pub. No.:    WO/2018/020906    International Application No.:    PCT/JP2017/022646
Publication Date: Fri Feb 02 00:59:59 CET 2018 International Filing Date: Wed Jun 21 01:59:59 CEST 2017
IPC: H01M 10/04
H01M 2/14
H01M 2/26
H01M 2/34
Applicants: HITACHI AUTOMOTIVE SYSTEMS, LTD.
日立オートモティブシステムズ株式会社
Inventors: ARIGA Toshiyuki
有賀 稔之
HORI Nobuyuki
堀 伸行
ITO Riyosuke
伊藤 良介
YAMAMOTO Yuki
山本 祐輝
IIZUKA Yoshinori
飯塚 佳士
Title: RECTANGULAR SECONDARY BATTERY
Abstract:
Provided is a rectangular secondary battery capable of preventing internal micro short circuiting (voltage reduction) which occurs due to conductive impurities entering from the negative terminal collector side. This rectangular secondary battery 100 has a flat-shaped wound group 3 which is wound such that separators 33 and 35 are interposed between a positive terminal 34 and a negative terminal 32. The positive terminal 34 has a positive-terminal mixture layer 34b applied to a positive-terminal metal foil, and a positive-terminal metal foil exposed part 34c where the positive-terminal metal foil is exposed. A resin layer 50 for adhesion between the separators 33 and 35 is provided at an end part on the opposite side of the positive-terminal metal foil exposed part 34c.