Title:
NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2022/249989
Kind Code:
A1
Abstract:
Provided is a non-aqueous electrolyte secondary battery in which the positions of a plurality of exposed parts are controlled so that it is possible to connect a plurality of tabs to predetermined positions in accordance with a thickness variation of electrodes. A non-aqueous electrolyte secondary battery according to one aspect of the present disclosure comprises: an electrode body in which a positive electrode and a negative electrode are wound with a separator therebetween; an electrolyte; and a cylindrical outer can which accommodates the electrode body and the electrolyte, wherein the positive electrode has a current collector and a mixed layer laminated on at least a portion of the surface of the current collector, a plurality of exposed parts where the current collector is exposed are formed on the surface of the positive electrode, tabs are connected to the respective exposed parts, and when the rotation angle of the electrode body from a winding start-side end to a winding finish-side end of the exposed parts relative to the winding center is defined as an exposed part angle, the exposed part angle of the exposed parts positioned on the winding start side is greater than the exposed part angle of the exposed parts positioned on the winding finish side.
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Inventors:
SHIMIZU ARISA
KOBAYASHI KEI
MAKHIJA GAGAN
MIZUKOSHI FUMIKAZU
MIZAWA ATSUSHI
KOBAYASHI KEI
MAKHIJA GAGAN
MIZUKOSHI FUMIKAZU
MIZAWA ATSUSHI
Application Number:
PCT/JP2022/020987
Publication Date:
December 01, 2022
Filing Date:
May 20, 2022
Export Citation:
Assignee:
SANYO ELECTRIC CO (JP)
International Classes:
H01M4/13; H01M10/052; H01M10/0566; H01M10/0587; H01M50/538
Domestic Patent References:
| WO2021251121A1 | 2021-12-16 |
Foreign References:
| US20170092926A1 | 2017-03-30 | |||
| JP2014225326A | 2014-12-04 | |||
| EP3696899A1 | 2020-08-19 | |||
| JP2000277155A | 2000-10-06 | |||
| JP2002164044A | 2002-06-07 |
Attorney, Agent or Firm:
YKI INTELLECTUAL PROPERTY ATTORNEYS (JP)
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