Patent ID: 11973180
Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A battery comprising:
an exterior body;
a stack in the exterior body; and
an ionic liquid in the exterior body,
wherein the exterior body has a film-like form and is folded in half with the stack between facing portions of the exterior body,
wherein the exterior body includes a pair of first portions, a second portion, a pair of third portions, and a fourth portion,
wherein the pair of first portions overlaps with each other,
wherein each of the first portion is surrounded by the second portion, the pair of third portions, and the fourth portion and includes a portion overlapping with the stack,
wherein the second portion is a folded portion located between the pair of first portions,
wherein the pair of third portions is belt-like portions located opposite to each other with each of the first portions therebetween and extending in a direction intersecting with the second portion,
wherein the fourth portion is a belt-like portion located opposite to the second portion with the first portion therebetween,
wherein the exterior body is bonded in the third portions and the fourth portion,
wherein the stack comprises a first positive electrode current collector and a second positive electrode current collector,
wherein a first positive electrode active material layer is provided on a first surface of the first positive electrode current collector,
wherein a second positive electrode active material layer is provided on a first surface of the second positive electrode current collector, and
wherein a second surface of the first positive electrode current collector is in contact with a second surface of the second positive electrode current collector.