ELECTRODE PLATE, LAMINATED ELECTRODE GROUP, BATTERY AND CYLINDRICAL BATTERY

摘要

PROBLEM TO BE SOLVED: To reduce internal resistance of an electrode plate and improve filling rate of an active material of the whole electrode, while enabling the number of collector terminals to reduce in a laminated electrode group.SOLUTION: A positive electrode plate 31 constituted by holding an active material on a collector, comprises: a first pole plate element 31P having an active material non-holding part 31A and approximately flat-shaped active material holding parts 31B formed at both sides of the active material non-holding part 31A to sandwich the active material non-holding part 31A, and in which the active material holding parts 31B are bent so as to face each other; and a second pole plate element 31Q having an active non-holding part 31C and an active holding part 31D. The active holding part 31D of the second pole plate element 31Q comes in contact with and overlaps with the active holding part 31B of the first pole plate element 31P, and the active non-holding part 31A of the first pole plate element 31P is soldered to the active non-holding part 31C of the second pole plate element 31Q.