Power storage device, battery management unit, and electronic device
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsJunya GOTO, Ai NAKAGAWA, Yuika SATO
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Abstract
A repeatedly bendable power storage device is provided. A highly reliable power storage device is provided. A long-life power storage device is provided. A repeatedly bendable electronic device is provided. A flexible electronic device is provided. The power storage device includes a positive electrode, a negative electrode, and an exterior body wrapping the positive electrode and the negative electrode. The exterior body includes a metal layer and a resin layer. The thickness of the metal layer in at least part of an outer edge of the exterior body is smaller than that in a region other than the outer edge. The exterior body has a plurality of slits in the outer edge.
Claims24
A power storage device comprising:
- a positive electrode;
- a negative electrode;
- and
- an exterior body wrapping the positive electrode and the negative electrode,
- wherein the exterior body includes an outer edge comprising a first slit.
A power storage device comprising:
- a positive electrode;
- a negative electrode;
- and
- an exterior body wrapping the positive electrode and the negative electrode,
- wherein the exterior body includes an outer edge,
- wherein the outer edge has a band-like shape,
- wherein the outer edge comprises:
- a first slit comprising a first edge on an edge side of the exterior body;
- and
- a second slit comprising a second edge on the edge side of the exterior body,
- wherein the second edge is closer to a center of the power storage device than the first edge,
- wherein an angle between a major axis of the first slit and a major axis of the outer edge is represented as a°,
- wherein an angle between a major axis of the second slit and the major axis of the outer edge is represented as b°, and
- wherein a is larger than b.
A power storage device comprising:
- a positive electrode;
- a negative electrode;
- and
- an exterior body wrapping the positive electrode and the negative electrode,
- wherein the exterior body includes an outer edge,
- wherein the outer edge comprises a first plurality of holes arranged linearly, and
- wherein the exterior body comprises a resin layer.
Dependencies are inferred from the claim text.