SECONDARY BATTERY

Japanese Patent JP2013038030

A

To suppress variations in surface pressure of a secondary battery which results from charging or discharging.

A secondary battery (1) has: a power generation element (20) charging and discharging and a case (10) formed into a cylindrical shape and housing the power generation element. The power generation element has a laminated body (25) and a shaft core (24). The laminated body is formed by laminating a positive electrode plate (21) and a negative electrode plate (22) with separators (23) sandwiched therebetween and includes a reaction region (A) where chemical reactions, resulting from charging or discharging, are caused. The laminated body is wound around the shaft core so as to be arranged along a periphery of a predetermined shaft. The shaft core is in contact with the laminated body at both end parts (B) of the reaction region in the direction that the predetermined shaft extends and is separated from the laminated body at a region of the reaction region excluding both end parts.

WO/2019/008545	SUB-UNIT OF ELECTRODE BODY, ELECTRODE UNIT, LAMINATED ELECTRODE BODY, AND ENERGY STORAGE ELEMENT
JP6624272	Quality control method for power storage devices
JP5939133	A separator whose electrode has been stored, an accumulating electricity device, and a manufacturing method of the separator whose electrode has been stored

KOBAYASHI KEIICHIRO

JP2011175443A

February 21, 2013

August 10, 2011

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TOYOTA MOTOR CORP

H01M10/04; H01M2/02; H01M10/052; H01M10/0566; H01M10/0587

JPH09219212A	1997-08-19
JP2007188859A	2007-07-26
JP2008243684A	2008-10-09

US20090280403A1	2009-11-12
US20110052973A1	2011-03-03
WO2010101180A1	2010-09-10

Mizuno Katsufumi
Makoto Ide
Hiroshi Suzawa

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