Title:
NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2023/190027
Kind Code:
A1
Abstract:
Provided is a non-aqueous electrolyte secondary battery including: a wound electrode assembly (14) obtained by winding together a strip-shaped positive electrode plate (11) and a strip-shaped negative electrode plate (12) with a separator (13) therebetween; and an outer can (15) that houses the electrode assembly (14). A negative electrode core or positive electrode core is exposed at the outermost periphery of the assembly (14), and a portion at at least one location on the wound-side end of the outermost peripheral surface is fixed by at least one piece of tape (30). When a region of the outermost peripheral surface where at least one piece of tape (30) is affixed is a first region A, a region thereof where no piece of tape has been affixed is a second region B1, and a region thereof that overlaps with the second region B1 on the inner wound surface of the outermost peripheral section of the negative electrode plate (12) is a third region B2, a spacer (32) is provided on a portion of the third region B2.
Inventors:
IMANISHI YOSUKE
Application Number:
PCT/JP2023/011487
Publication Date:
October 05, 2023
Filing Date:
March 23, 2023
Export Citation:
Assignee:
PANASONIC ENERGY CO LTD (JP)
International Classes:
H01M10/0587; H01M50/474; H01M50/477
Domestic Patent References:
| WO2019187755A1 | 2019-10-03 | |||
| WO2019244818A1 | 2019-12-26 |
Foreign References:
| JP2009283218A | 2009-12-03 |
Attorney, Agent or Firm:
YKI INTELLECTUAL PROPERTY ATTORNEYS (JP)
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