Title:
CYLINDRICAL NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2018/116876
Kind Code:
A1
Abstract:
The non-aqueous electrolyte secondary battery according to an embodiment of the present invention comprises a wound electrode body (14) wherein a positive electrode (11), and a negative electrode (12) having a negative electrode mixture layer formed over a negative electrode core body are wound into a spiral shape with a separator (13) therebetween. The negative electrode (12) includes a non-facing portion (12a) that has been wound 1.25 turns or more from the inner end in the winding direction of the wound electrode body (14) in a non-facing state with the positive electrode with the separator (13) therebetween. The non-facing portion (12a) has a negative electrode mixture layer formed portion (12c) comprising the negative electrode mixture layer formed on at least one surface thereof, continuously from an external end in the winding direction, inwards in the winding direction, the negative electrode mixture layer formed portion (12c) being wound 0.75 turns or more.
Inventors:
SUGAYA JUNICHI
MIZAWA ATSUSHI
YAMAGAMI YUJI
UEDA TOMOMICHI
NAKAMURA MASAHIRO
MIZAWA ATSUSHI
YAMAGAMI YUJI
UEDA TOMOMICHI
NAKAMURA MASAHIRO
Application Number:
PCT/JP2017/044291
Publication Date:
June 28, 2018
Filing Date:
December 11, 2017
Export Citation:
Assignee:
SANYO ELECTRIC CO (JP)
International Classes:
H01M10/0587; H01M4/13; H01M4/48; H01M10/052; H01M50/531; H01M50/534; H01M50/536
Foreign References:
| JP2011091020A | 2011-05-06 | |||
| JP2014060063A | 2014-04-03 | |||
| JP2009151977A | 2009-07-09 | |||
| JP2003123829A | 2003-04-25 | |||
| JP2004273153A | 2004-09-30 |
Attorney, Agent or Firm:
TOKUDA Yoshiaki et al. (JP)
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