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Patent Searching and Data


Title:
WINDING CORE, DEVICE FOR MANUFACTURING WOUND ELECTRODE, AND METHOD FOR MANUFACTURING WOUND ELECTRODE
Document Type and Number:
WIPO Patent Application WO/2018/025785
Kind Code:
A1
Abstract:
An embodiment of the present invention provides a winding core and device and method for manufacturing a wound electrode. The winding core is provided for manufacturing a wound electrode including a positive electrode, a separator having a surface dynamic friction coefficient of 0.2 or greater, and a negative electrode. The winding core has an elongated main body part having, on a surface thereof, a contact surface part which is in contact with the separator. The contact surface part has a plurality of linear groove parts which are provided in the longitudinal direction of the main body part, and which has a maximum width greater than or equal to 1 μm and less than 1 mm in the direction perpendicular to the longitudinal direction. In the projected area when the contact surface part is viewed in a plan view, the total area A of the groove parts and the area B, in which the groove parts are not present, satisfy the relationship represented by 0.1≤A/(A+B)≤0.8.

Inventors:
YOSHITOMI TAKASHI (JP)
HAMADA TOMOYA (JP)
OTSUKA ATSUHIRO (JP)
NISHIKAWA SATOSHI (JP)
Application Number:
PCT/JP2017/027576
Publication Date:
February 08, 2018
Filing Date:
July 28, 2017
Export Citation:
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Assignee:
TEIJIN LTD (JP)
International Classes:
H01M10/0587; H01M10/04; H01M50/409; H01M50/489; H01M50/491
Foreign References:
JP2009259722A2009-11-05
JP2003017110A2003-01-17
JP2011082155A2011-04-21
JP2010265118A2010-11-25
JP2012151064A2012-08-09
JP2008152946A2008-07-03
JP2009230861A2009-10-08
Attorney, Agent or Firm:
NAKAJIMA, Jun et al. (JP)
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