Title:
SECONDARY BATTERY AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2024/042915
Kind Code:
A1
Abstract:
The present invention provides a secondary battery in which not only a residual gas is sufficiently degassed, but also contraction of a separator and warping of a battery element are sufficiently suppressed. The present invention pertains to a secondary battery including: a battery element in which a positive electrode 2 and a negative electrode are stacked with a separator 1 therebetween; and an exterior body which accommodates the battery element, wherein the separator 1 has, in one peripheral edge section-facing region (outer regions x and y) which faces a peripheral edge section of the positive electrode, two or more first recesses 10a, and one or more second recesses 10b which are disposed between two first recesses adjacent to each other among the two or more first recesses 10a.
Inventors:
HORIE TAKUYA (JP)
KUJIRADA HIKARU (JP)
KUJIRADA HIKARU (JP)
Application Number:
PCT/JP2023/026088
Publication Date:
February 29, 2024
Filing Date:
July 14, 2023
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01M50/463; H01M10/052; H01M10/0585; H01M50/46
Foreign References:
| JP2015201404A | 2015-11-12 | |||
| JP2017152284A | 2017-08-31 | |||
| JP2003092100A | 2003-03-28 |
Attorney, Agent or Firm:
YAMAO, Norihito et al. (JP)
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