ELECTRODE GROUP, SECONDARY BATTERY, AND MANUFACTURING METHOD OF THE ELECTRODE GROUP

摘要

PROBLEM TO BE SOLVED: To provide an electrode group with high mass productivity, a secondary battery, and a manufacturing method of the electrode group.SOLUTION: The electrode group includes: a first laminate formed by overlapping a first positive electrode and a first negative electrode; and a second laminate formed by overlapping a second positive electrode and a second negative electrode. The electrode group is formed by overlapping and winding the first laminate and the second laminate.