Document Type and Number:
Japanese Patent JPWO2021187259
Kind Code:
A1
Abstract:
Disclosed is a secondary battery in which a positive electrode active material non-covered portion is joined to a positive electrode current collector plate at one end portion of an electrode winding body, a negative electrode active material non-covered portion is joined to a negative electrode current collector plate at the other end portion of the electrode winding body, the positive electrode current collector plate has a positive electrode bead on a surface thereof, the negative electrode current collector plate has a negative electrode bead on a surface thereof, a width of the positive electrode bead is 0.05 mm or more and 0.18 mm or less, a width of the negative electrode bead is 0.03 mm or more and 0.12 mm or less.
Application Number:
JP2022508248A
Publication Date:
September 23, 2021
Filing Date:
March 10, 2021
Export Citation:
