二次電池

Japanese Patent JP6958004

B2

A secondary battery has an electrode assembly including a negative electrode plate and a positive electrode plate and a battery case accommodating the electrode assembly. The negative electrode plate includes a negative electrode core body and first and second negative electrode active material mix layers disposed on the respective surfaces of the negative electrode core body. A first separator is bonded to the first negative electrode active material mix layer, and a second separator is bonded to the second negative electrode active material mix layer. In at least one side edge portion of the negative electrode plate, the first separator has a first bent portion bent toward the second separator, the negative electrode core body has a second bent portion bent toward the second separator, and the second negative electrode active material mix layer includes a region having a thickness less than the thickness of the central portion.

WO/2016/087311	ELECTRICAL STORAGE SYSTEM COMPRISING A SHEET-TYPE DISCRETE ELEMENT, DISCRETE SHEET-TYPE ELEMENT, METHOD FOR THE PRODUCTION THEREOF AND USE THEREOF
WO/2013/092063	BATTERY ARRANGEMENT, BATTERY AND PRODUCTION METHOD
WO/2022/014551	STACKED CELL MANUFACTURING DEVICE

Maruyama Masahide

JP2017115557A

November 02, 2021

June 13, 2017

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Sanyo Electric Co., Ltd.

H01M10/04; H01M4/02; H01M4/13; H01M10/058; H01M10/0585; H01M50/103; H01M50/15; H01M50/46; H01M50/463; H01M50/586; H01M50/593

JP10275628A
JP2011204615A
JP2006324095A
JP2015222632A
JP2014110160A
JP2014041724A
JP2018081857A

WO2012081331A1
KR1020160023072A

Tokuda Yoshiaki
Masato Murayama

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