US 12,230,817 B2
Secondary battery
Minoru Takahashi, Nagano (JP); and Ryota Tajima, Kanagawa (JP)
Assigned to SEMICONDUCTOR ENERGY LABORATORY CO., LTD., Kanagawa-ken (JP)
Filed by SEMICONDUCTOR ENERGY LABORATORY CO., LTD., Atsugi (JP)
Filed on Aug. 24, 2023, as Appl. No. 18/237,635.
Application 18/237,635 is a continuation of application No. 17/980,073, filed on Nov. 3, 2022, granted, now 11,742,543.
Application 17/980,073 is a continuation of application No. 16/812,412, filed on Mar. 9, 2020, granted, now 11,495,853, issued on Nov. 8, 2022.
Application 16/812,412 is a continuation of application No. 16/382,249, filed on Apr. 12, 2019, granted, now 10,586,955, issued on Mar. 10, 2020.
Application 16/382,249 is a continuation of application No. 14/558,781, filed on Dec. 3, 2014, granted, now 10,263,223, issued on Apr. 16, 2019.
Claims priority of application No. 2013-251175 (JP), filed on Dec. 4, 2013.
Prior Publication US 2023/0402692 A1, Dec. 14, 2023
Int. Cl. H01M 50/186 (2021.01); H01M 50/10 (2021.01); H01M 50/105 (2021.01); H01M 50/116 (2021.01); H01M 50/119 (2021.01); H01M 50/121 (2021.01); H01M 50/129 (2021.01); H01M 50/136 (2021.01); H01M 50/183 (2021.01); H01M 50/184 (2021.01); H01M 50/198 (2021.01)
CPC H01M 50/186 (2021.01) [H01M 50/10 (2021.01); H01M 50/105 (2021.01); H01M 50/116 (2021.01); H01M 50/119 (2021.01); H01M 50/121 (2021.01); H01M 50/129 (2021.01); H01M 50/136 (2021.01); H01M 50/183 (2021.01); H01M 50/184 (2021.01); H01M 50/198 (2021.01)] 4 Claims
OG exemplary drawing
 
1. A power storage device comprising:
a positive electrode;
a negative electrode;
an electrolytic solution; and
an exterior body being sheet-like,
wherein the exterior body has a shape comprising:
a first portion enclosing at least a part of the positive electrode, at least a part of the negative electrode, and the electrolytic solution with two exterior body films; and
a second portion that the two exterior body films are in contact with each other,
wherein the exterior body comprises a shape that an interface between the first portion and the second portion is linear except for corners,
wherein at least one of the corners of the interface of the exterior body has a shape with a curved shape or an arc shape,
wherein the shape with a curved shape or an arc shape has a shape protruding toward an inside of the power storage device in a plane view,
wherein the power storage device has a flexible region, and
wherein the interface comprises the at least one of the corners having the shape with a curved shape or an arc shape of the at least one of the corners in the flexible region.