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公开(公告)号：US20160313769A1
公开(公告)日：2016-10-27
申请号：US15095286
申请日：2016-04-11
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Yusuke YOSHITANI , Hideaki KUWABARA , Natsuko TAKASE
Abstract: A highly convenient electronic device used while being worn on a body is provided. The electronic device is an arm-worn electronic device including a display panel, a power storage device, a circuit, and a sealing structure. The display panel displays an image with power supplied from the power storage device. The circuit includes an antenna and charges the power storage device wirelessly. Inside the sealing structure, the display panel, the power storage device, and the circuit are provided. The sealing structure includes a portion that transmits visible light. The sealing structure can be worn on an arm or is connected to a structure body that can be worn on an arm.
Abstract translation: 提供了一种在身体上佩戴时使用的非常方便的电子装置。 电子装置是包括显示面板，蓄电装置，电路和密封结构的手臂式电子装置。 显示面板使用从蓄电装置提供的电力来显示图像。 该电路包括一个天线，并对无线存储设备充电。 在密封结构内，提供显示面板，蓄电装置和电路。 密封结构包括透射可见光的部分。 密封结构可以佩戴在臂上或连接到可以佩戴在手臂上的结构体。
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公开(公告)号：US20240396048A1
公开(公告)日：2024-11-28
申请号：US18697576
申请日：2022-09-26
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Yusuke YOSHITANI , Noriko MIYAIRI , Mayumi MIKAMI , Kazuki TANEMURA , Kanta ABE , Tatsuyoshi TAKAHASHI , Kenta NAKANISHI , Shunpei YAMAZAKI
Abstract: A secondary battery includes a positive electrode active material layer including a primary particle containing lithium, nickel, cobalt, and manganese and a secondary particle formed by aggregation of the primary particles, and calcium is contained between adjacent primary particles of the secondary particle. With such a structure, calcium inhibits oxygen release from the primary particle in charging and discharging, whereby the reliability of the secondary battery is improved.
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Patent Agency Ranking
公开(公告)号：US20240079583A1
公开(公告)日：2024-03-07
申请号：US18262126
申请日：2022-01-13
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Kazuya SHIMADA , Kousuke SASAKI , Takashi HIRAHARA , Yusuke YOSHITANI , Mayumi MIKAMI , Yohei MOMMA
CPC classification number: H01M4/525 , C01G51/42 , C01P2002/60 , C01P2002/72 , C01P2004/03 , C01P2006/40 , H01M2004/028
Abstract: A novel method for forming a positive electrode active material is provided. The method for forming a positive electrode active material includes causing a reaction between a cobalt aqueous solution and an alkaline aqueous solution to form a cobalt compound; mixing the cobalt compound and a lithium compound and performing a first heat treatment to form a first composite oxide; mixing the first composite oxide and a compound containing a first additive element and performing a second heat treatment to form a second composite oxide; and mixing the second composite oxide and a compound containing a second additive element and performing a third heat treatment. The first heat treatment is performed at a temperature higher than or equal to 700° C. and lower than or equal to 1100° C. The second heat treatment is performed at a temperature higher than or equal to 700° C. and lower than or equal to 1000° C. The third heat treatment is performed at a temperature equal to the temperature of the second heat treatment or at a temperature lower than the temperature of the second heat treatment.
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14.发明申请公开(公告)号：US20220250937A1
公开(公告)日：2022-08-11
申请号：US17587819
申请日：2022-01-28
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Shunpei YAMAZAKI , Yusuke YOSHITANI , Takashi HIRAHARA , Kunihiko SUZUKI , Kanta ABE
IPC: C01G53/00 , H01M10/0525
Abstract: A novel method for manufacturing a positive electrode active material is provided. In the method, an acid solution is formed by mixing an aqueous solution containing nickel, cobalt, and manganese with an aqueous solution containing a first additive element; a composite hydroxide containing nickel, cobalt, manganese, and the first additive element is formed by a reaction between the acid solution and an alkaline solution; the composite hydroxide and a lithium source are mixed and heated (first heating) to form a composite oxide; and the composite oxide and a second additive element source are mixed and heated (second heating). The first additive element is at least one of gallium, boron, aluminum, indium, magnesium, and fluorine, and the second additive element is at least one of calcium, gallium, boron, aluminum, indium, magnesium, and fluorine.
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公开(公告)号：US20220223831A1
公开(公告)日：2022-07-14
申请号：US17565031
申请日：2021-12-29
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Yusuke YOSHITANI , Takashi HIRAHARA , Noriko MIYAIRI , Masahiko HAYAKAWA , Yohei MOMMA
IPC: H01M4/04
Abstract: To provide a positive electrode active material with high charge and discharge capacity, or a novel positive electrode active material. The positive electrode active material is formed in the following manner: a cobalt compound (also referred to as a precursor) containing nickel, cobalt, and manganese is obtained by a coprecipitation method; a mixture obtained by mixing a lithium compound, the cobalt compound, and an additive is heated at first heating temperature; and the heated mixture is ground or crushed and further heated at second heating temperature that is higher than the first heating temperature. The first heating temperature is higher than or equal to 400° C. and lower than or equal to 700° C. The second heating temperature is higher than 700° C. and lower than or equal to 1050° C.
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公开(公告)号：US20220073367A1
公开(公告)日：2022-03-10
申请号：US17464205
申请日：2021-09-01
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Yohei MOMMA , Mayumi MIKAMI , Yusuke YOSHITANI , Kazuki TANEMURA
IPC: C01G53/00 , H01M10/0525
Abstract: The present invention relates to a method for manufacturing a secondary battery and a secondary battery. A method for manufacturing a positive electrode active material with high charge and discharge capacity is provided. A method for manufacturing a positive electrode active material with high charging and discharging voltages is provided. A method for manufacturing a positive electrode active material with little deterioration is provided. The positive electrode active material is manufactured through a step of forming a composite oxide that contains lithium, nickel, manganese, cobalt, and oxygen; and a step of mixing the composite oxide and a calcium compound, and then heating the mixture at a temperature higher than or equal to 500° C. and lower than or equal to 1100° C. for 2 hours to 20 hours. By the heating, calcium is distributed at a preferred concentration in a surface portion of the positive electrode active material.
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公开(公告)号：US20200264671A1
公开(公告)日：2020-08-20
申请号：US16864287
申请日：2020-05-01
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Yusuke YOSHITANI , Hideaki KUWABARA , Natsuko TAKASE
Abstract: A highly convenient electronic device used while being worn on a body is provided. The electronic device is an arm-worn electronic device including a display panel, a power storage device, a circuit, and a sealing structure. The display panel displays an image with power supplied from the power storage device. The circuit includes an antenna and charges the power storage device wirelessly. Inside the sealing structure, the display panel, the power storage device, and the circuit are provided. The sealing structure includes a portion that transmits visible light. The sealing structure can be worn on an arm or is connected to a structure body that can be worn on an arm.
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