Title:
SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2023/100647
Kind Code:
A1
Abstract:
Provided is a secondary battery in which: at least a portion of a first outermost peripheral tape (30a) opposes a first end portion heat resistant layer (34a); at least a portion of a second outermost peripheral tape (30b) opposes a second end portion heat resistant layer (34b); a thickness of the first end portion heat resistant layer (34a) and a thickness of the second end portion heat resistant layer (34b) are less than a thickness of a central portion heat resistant layer (34c) and are greater than 0.001 mm; and a ratio (A1/W) of a length (A1) from one end, in a width direction, of a separator (13) to a central side end portion, in the width direction, of the first outermost peripheral tape (30a) to a length (W), in the width direction, of the separator (13), and a ratio (A2/W) of a length (A2) from the other end, in the width direction, of the separator (13) to a central side end portion, in the width direction, of the second outermost peripheral tape (30b) to the length (W), in the width direction, of the separator (13), are each at most equal to 0.25.
Inventors:
NAMBUYA SHUNSUKE
TSUNODA SHUICHI
TSUNODA SHUICHI
Application Number:
PCT/JP2022/042444
Publication Date:
June 08, 2023
Filing Date:
November 15, 2022
Export Citation:
Assignee:
PANASONIC ENERGY CO LTD (JP)
International Classes:
H01M10/052; H01M50/451; H01M10/0587; H01M50/463; H01M50/489
Domestic Patent References:
| WO2019187755A1 | 2019-10-03 | |||
| WO2019244817A1 | 2019-12-26 |
Foreign References:
| JP2011034859A | 2011-02-17 |
Attorney, Agent or Firm:
YKI INTELLECTUAL PROPERTY ATTORNEYS (JP)
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