Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
非水電解質二次電池
Document Type and Number:
Japanese Patent JP5704413
Kind Code:
B2
Abstract:
A main object of the present invention to provide a nonaqueous electrolyte secondary battery having high durability towards charge and discharge cycles, by preventing buckling of a wound electrode body. The secondary battery provided by the present invention comprises: a nonaqueous electrolyte; and a wound electrode body 80 configured by superposing on each other, and winding a positive electrode sheet 10 having a positive electrode collector formed to a sheet shape and a positive electrode active material layer formed on that collector, a, negative electrode sheet 20 having a negative electrode collector formed to a sheet shape and a negative electrode active material layer formed on that collector, and a separator 40 formed to a sheet shape. The negative electrode active material contained in the negative electrode active material layer is oriented in a predetermined direction. The positive electrode sheet 10, negative electrode sheet 20 and separator sheet 40 all have a tensile elongation at break of 2% or higher.

Inventors:
Koji Takahata
Toshihiko Mihashi
Naoyuki Wada
Application Number:
JP2012534859A
Publication Date:
April 22, 2015
Filing Date:
September 22, 2010
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
H01M10/0587; H01M2/16; H01M4/131; H01M4/133; H01M4/1391; H01M4/1393; H01M4/505; H01M4/525; H01M4/587; H01M4/66; H01M10/0525
Domestic Patent References:
JP2004220926A2004-08-05
JP2009266761A2009-11-12
JP4366451B12009-11-18
JP2009064770A2009-03-26
JP2001189167A2001-07-10
JPH11273743A1999-10-08
JP2004220926A2004-08-05
JP2009266761A2009-11-12
JP4366451B12009-11-18
JP2009064770A2009-03-26
JP2001189167A2001-07-10
JPH11273743A1999-10-08
Attorney, Agent or Firm:
Makoto Abe
Michiko Oi
Shunsuke Fukutomi



 
Previous Patent: リニアソレノイド

Next Patent: 非水系二次電池