Title:
SECONDARY BATTERY, AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2023/054582
Kind Code:
A1
Abstract:
Provided is a secondary battery comprising an electrode wound body formed by winding an electrode-constituting layer configured from a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode. The electrode wound body includes a central cavity which extends centrally along a winding axis, and any one of the positive electrode and the negative electrode is provided, at an end surface of the electrode wound body, with a current collecting foil extended portion in which a current collector extends further outward than the other electrode. The current collecting foil extended portion in the vicinity of the central cavity is bent so as to be folded back toward the central cavity, and the electrode-constituting layer is offset from the end surface toward an interior of the electrode wound body.
Inventors:
GOKITA YASUO (JP)
Application Number:
PCT/JP2022/036431
Publication Date:
April 06, 2023
Filing Date:
September 29, 2022
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01M10/04; H01M10/052; H01M10/0587
Domestic Patent References:
| WO2021177149A1 | 2021-09-10 | |||
| WO2020199248A1 | 2020-10-08 | |||
| WO2020105916A1 | 2020-05-28 |
Foreign References:
| JP2002289251A | 2002-10-04 |
Attorney, Agent or Firm:
YAMAO, Norihito et al. (JP)
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