| CPC H01M 50/533 (2021.01) [H01M 10/0427 (2013.01); H01M 50/109 (2021.01); H01M 50/46 (2021.01); H01M 50/528 (2021.01); H01M 50/531 (2021.01); H01M 50/54 (2021.01)] | 18 Claims |
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1. A secondary battery comprising a power generation element including a plurality of electrodes, the electrodes being stacked on each other in a stacking direction with a separator interposed therebetween, wherein
each of the electrodes includes a current collector led out in a first direction intersecting the stacking direction,
each of a plurality of the current collectors led out in the first direction includes an end part, wherein the end part includes a first bent part that is bent in a second direction intersecting the first direction,
each of a plurality of the first bent parts overlaps and is in contact with an adjacent first bent part in the second direction,
at least one of the first bent parts terminates at a middle point on an end face along the second direction of the power generation element, and
wherein the end part of each of one or more, but not all, of the current collectors led out in the first direction further includes a second bent part that is coupled to the first bent part and bent in a third direction to be along the power generation element, and wherein the third direction is opposite to the first direction.
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