US 11,990,586 B2
Secondary battery
Masahiro Otsuka, Nagaokakyo (JP); and Toru Kawai, Nagaokakyo (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Nagaokakyo (JP)
Filed by Murata Manufacturing Co., Ltd., Nagaokakyo (JP)
Filed on Feb. 15, 2019, as Appl. No. 16/276,942.
Application 16/276,942 is a continuation of application No. PCT/JP2017/033095, filed on Sep. 13, 2017.
Claims priority of application No. 2016-231707 (JP), filed on Nov. 29, 2016.
Prior Publication US 2019/0181505 A1, Jun. 13, 2019
Int. Cl. H01M 10/0583 (2010.01); H01M 10/04 (2006.01); H01M 10/0585 (2010.01); H01M 10/0587 (2010.01); 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)
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
OG exemplary drawing
 
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.