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1. JP2022025431 - SECONDARY BATTERY

Office
Japan
Application Number 2020128245
Application Date 29.07.2020
Publication Number 2022025431
Publication Date 10.02.2022
Publication Kind A
IPC
H01M 10/04
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
04Construction or manufacture in general
H01M 10/0585
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
058Construction or manufacture
0585of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
CPC
H01M 10/04
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
04Construction or manufacture in general
H01M 10/0585
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
058Construction or manufacture
0585of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
Applicants HITACHI LTD
株式会社日立製作所
Inventors ITO SHOTA
伊藤 渉太
MOTOKURA KOHEI
本蔵 耕平
KAWAJI JUN
川治 純
Agents 特許業務法人平木国際特許事務所
Title
(EN) SECONDARY BATTERY
(JA) 二次電池
Abstract
(EN)

PROBLEM TO BE SOLVED: To suppress the material degradation of electrodes and improve the safety of a recovery process by suppressing the unevenness of recovery by the recovery process in a secondary battery to recover a reduced battery capacity.

SOLUTION: The secondary battery has a positive electrode, a negative electrode, and a capacity recovery electrode as a third electrode. The secondary battery has an electrode group 1, which is formed by stacking the positive electrode 11, negative electrode 12, and capacity recovery electrode 15. In the electrode group 1, the capacity recovery electrode 15 is arranged inside the electrode group 1, which is located in the inner side of the stacking direction than the outermost side of the stacking direction of the electrode group 1.

SELECTED DRAWING: Figure 2

COPYRIGHT: (C)2022,JPO&INPIT


(JA) 【課題】減少した電池容量を回復する二次電池において、回復処理による回復ムラを抑制することにより、電極の材料劣化を抑制するとともに回復処理の安全性を向上する。
【解決手段】本発明の二次電池は、正極、負極、及び第三極としての容量回復極を有する二次電池であって、正極11と負極12と容量回復極15を積層することにより構成される電極群1を備えている。そして、電極群1は、電極群1の積層方向外側の最外部よりも積層方向内側の位置となる電極群1の内部に容量回復極15が配置されていることを特徴とする。
【選択図】図2

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