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1. (WO2015046531) LITHIUM ION SECONDARY BATTERY SYSTEM

Pub. No.:    WO/2015/046531    International Application No.:    PCT/JP2014/075949
Publication Date: Fri Apr 03 01:59:59 CEST 2015 International Filing Date: Tue Sep 30 01:59:59 CEST 2014
IPC: H01M 10/44
H01M 2/10
H01M 4/505
H01M 4/525
H01M 10/0567
H01M 10/0569
Applicants: NEC CORPORATION
日本電気株式会社
Inventors: SASAKI, Hideaki
佐々木 英明
NOGUCHI, Takehiro
野口 健宏
KATOU, Yuukou
加藤 有光
TAKAHASHI, Makiko
高橋 牧子
Title: LITHIUM ION SECONDARY BATTERY SYSTEM
Abstract:
The purpose of the present invention is to provide a battery system which has improved output characteristics and/or improved storage characteristics, while utilizing a high energy density of a lithium ion secondary battery that is provided with a positive electrode containing a positive electrode active material having an operating potential of 4.5 V or more with respect to lithium metal. The present invention relates to a battery system which is provided with: a first battery that is composed of a 5V class battery; a second battery that is composed of a 4V class battery; and a control system.