Title:
NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2024/004630
Kind Code:
A1
Abstract:
Provided is a non-aqueous electrolyte secondary battery having excellent safety when an impact from the outside is received. A non-aqueous electrolyte secondary battery according to one aspect of the present disclosure comprises: an electrode body in which a band-shaped positive electrode and a band-shaped negative electrode are wound via a separator; a non-aqueous electrolyte; and an external body accommodating the electrode body and the non-aqueous electrolyte. The positive electrode has a positive electrode current collector and a positive electrode mixture layer formed on both surfaces of the positive electrode current collector. The positive electrode has, near a winding inner end, a tapered portion from the surface of one positive electrode mixture layer to the positive electrode current collector, the tapered portion becoming thinner toward the winding inner end.
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Inventors:
SHIBUTANI SATOSHI
Application Number:
PCT/JP2023/021895
Publication Date:
January 04, 2024
Filing Date:
June 13, 2023
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H01M10/0587; H01M4/13; H01M4/505; H01M4/525; H01M10/052
Domestic Patent References:
| WO2016116971A1 | 2016-07-28 | |||
| WO2020084986A1 | 2020-04-30 |
Foreign References:
| JP2009134916A | 2009-06-18 | |||
| JP2011198483A | 2011-10-06 |
Attorney, Agent or Firm:
YKI INTELLECTUAL PROPERTY ATTORNEYS (JP)
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