Electronic device and glasses-type device including secondary battery
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsRyota Tajima, Masaaki Hiroki, Daisuke Furumatsu
Life of this patent
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Abstract
A wearable device needs to have a design corresponding to complicated surfaces of human bodies. Thus, an electronic device that can fit the characteristics of each individual human body after being purchased and can be worn naturally and comfortably is provided. The electronic device includes a secondary battery which can be transformed. By using a secondary battery which can be transformed, for example, a secondary battery can be efficiently placed in a narrow and elongated space in the electronic device, and the elongated secondary battery can be bent together with the electronic device. Furthermore, the weight balance of the electronic device can be easily adjusted.
Claims8
An electronic device comprising a secondary battery,
- wherein the secondary battery includes a first positive electrode current collector, a second positive electrode current collector, a first negative electrode current collector, and a second negative electrode current collector,
- wherein the first positive electrode current collector and the second positive electrode current collector are electrically connected to each other at a first side of the secondary battery,
- wherein the first negative electrode current collector and the second negative electrode current collector are electrically connected to each other at a second side of the secondary battery,
- wherein the secondary battery includes a curved portion,
- wherein the curved portion is closer to the second side than a midpoint of a long side of the secondary battery,
- wherein the first negative electrode current collector is provided with a negative electrode active material layer on a first surface and is not provided with a negative electrode active material layer on an entirety of a second surface,
- wherein the second negative electrode current collector is not provided with a negative electrode active material layer on an entirety of a first surface and is provided with a negative electrode active material layer on a second surface,
- wherein the second surface of the first negative electrode current collector and the first surface of the second negative electrode current collector are in direct contact with each other, and
- wherein the entirety of the second surface of the first negative electrode current collector and the entirety of the first surface of the second negative electrode current collector are regions that are not coated with the negative electrode active material layers.
Dependencies are inferred from the claim text.