Power storage device and electronic device
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsMasayuki Kimura, Junya Goto
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Abstract
To improve the flexibility of a power storage device, or provide a high-capacity power storage device. The power storage device includes a positive electrode, a negative electrode, an exterior body, and an electrolyte. The outer periphery of each of the positive electrode active material layer and the negative electrode active material layer is a closed curve. The exterior body includes a film and a thermocompression-bonded region. The inner periphery of the thermocompression-bonded region is a closed curve. The electrolyte, the positive electrode active material layer, and the negative electrode active material layer are in a region surrounded by the thermocompression-bonded region.
Claims10
A power storage device comprising:
- an electrode;
- and
- an exterior body,
- wherein an outer periphery of the exterior body comprises a first side, a second side, and a vertex,
- wherein the vertex is a cross point of the first side and the second side,
- wherein the distance between the outer periphery of the electrode and the vertex is larger than the distance between the outer periphery of the electrode and a part of the first side,
- wherein a part of the outer periphery of the electrode is a curved line,
- wherein the exterior body comprises a film having a thermocompression-bonded region,
- wherein an inner periphery of the thermal compression-bonded region is a closed curve, and
- wherein the closed curve include no vertex.
Dependencies are inferred from the claim text.