Title:
CYLINDRICAL BATTERY
Document Type and Number:
WIPO Patent Application WO/2024/048145
Kind Code:
A1
Abstract:
According to the present invention, a positive electrode (11) includes, between the winding start side end (42a) of a positive electrode mixture layer (42) and the winding end side end (42b) of the positive electrode mixture layer (42) in an α-direction, a first positive electrode core exposed portion (45) which is positioned at one edge in a β-direction and to which a positive electrode lead (20) is connected, and a second positive electrode core exposed portion (46) which is positioned at the other edge in the β-direction and at least part of which is opposite the first positive electrode core exposed portion (45) in the β-direction with a part (42c) of the positive electrode mixture layer (42) therebetween. The part (42c) of the positive electrode mixture layer (42) is disposed between the first positive electrode core exposed portion (45) and the second positive electrode core exposed portion (46) in the β-direction. The width-direction length a between the first positive electrode core exposed portion (45) and the second positive electrode core exposed portion (46) is not less than 10% of the β-direction length b of the positive electrode (11).
Inventors:
MATSUSHITA KAZUKI
GAMANO YUSUKE
MORI SHINYA
GAMANO YUSUKE
MORI SHINYA
Application Number:
PCT/JP2023/027314
Publication Date:
March 07, 2024
Filing Date:
July 26, 2023
Export Citation:
Assignee:
PANASONIC ENERGY CO LTD (JP)
International Classes:
H01M50/531; H01M10/04; H01M10/052; H01M10/0587
Foreign References:
| JPH09306471A | 1997-11-28 | |||
| JP2003068271A | 2003-03-07 |
Attorney, Agent or Firm:
YKI INTELLECTUAL PROPERTY ATTORNEYS (JP)
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