CPC H01M 10/0583 (2013.01) [H01M 10/0436 (2013.01); H01M 10/0585 (2013.01); H01M 10/0587 (2013.01); H01M 50/105 (2021.01); H01M 50/121 (2021.01); H01M 50/136 (2021.01); H01M 50/202 (2021.01); H01M 50/463 (2021.01)] | 20 Claims |
1. A secondary battery comprising:
an electrode assembly including a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode; and
an electrolyte encapsulated in an exterior body,
wherein the exterior body has a shape defining a cutout portion in a planar view thereof,
wherein the exterior body has a seal portion along a peripheral edge portion thereof,
wherein at least one portion of the seal portion is folded in a thickness direction of the secondary battery into a folded seal portion such that an end of the folded seal portion is located on a cutout portion side of the seal portion, and
wherein the folded seal portion extends along the thickness direction and a height h1 of the folded seal portion is less than or equal to a height h3 of the secondary battery.
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