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1. (WO2017037981) NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Pub. No.:    WO/2017/037981    International Application No.:    PCT/JP2016/003140
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Fri Jul 01 01:59:59 CEST 2016
IPC: H01M 2/34
H01M 2/26
H01M 10/0587
Applicants: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
パナソニックIPマネジメント株式会社
Inventors: OURA, Yuji
大浦 勇士
SHIOZAKI, Tomoki
塩崎 朝樹
Title: NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
Abstract:
This nonaqueous electrolyte secondary battery is provided with: a positive electrode having a positive electrode collector and a positive electrode active material layer; a negative electrode having a negative electrode collector and a negative electrode active material layer; a separator interposed between the positive electrode and the negative electrode; a nonaqueous electrolyte; a positive electrode lead; and an insulating tape covering at least a part of the positive electrode. The positive electrode collector has an exposed part that does not support the positive electrode active material layer; and the positive electrode lead is connected to the exposed part. The positive electrode lead has: a lead-out part extruding from the exposed part; and an overlap part overlapping the exposed part. At least a part of the exposed part is covered, together with at least a part of the overlap part, by the insulating tape. The insulating tape comprises a base layer and an adhesive layer. The base layer contains a polyimide; and the adhesive layer has an electrical resistance of 1 kΩ/mm2 or more at 500°C.