公开(公告)号：US20250046937A1

公开(公告)日：2025-02-06

申请号：US18713462

申请日：2022-11-18

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Yasuhiro JINBO ,  Yosuke TSUKAMOTO ,  Kazutaka KURIKI ,  Tetsuji ISHITANI ,  Shuhei YOSHITOMI ,  Takeshi OSADA

IPC: H01M50/247 ,  H01M10/0525 ,  H01M10/42 ,  H01M10/48 ,  H01M50/238 ,  H01M50/284

Abstract: A safe charging environment with respect to a flexible battery capable of following the movement of a housing is provided. A flexible battery management system or an electronic device mounted with the flexible battery includes a sensor that senses a movement of the flexible battery and a charge control circuit having a function of starting charging or stopping charging of the flexible battery on the basis of a signal from the sensor; charging of the flexible battery is started using the charge control circuit when the sensor senses the flexible battery in a first mode where the flexible battery is opened and senses the flexible battery in a second mode where the flexible battery is curved.

公开(公告)号：US20240405308A1

公开(公告)日：2024-12-05

申请号：US18695496

申请日：2022-09-20

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Yohei MOMMA ,  Tetsuya KAKEHATA ,  Tetsuji ISHITANI ,  Yuji IWAKI ,  Ryota TAJIMA ,  Shuhei YOSHITOMI

IPC: H01M10/615 ,  B60L58/27 ,  H01M10/44 ,  H01M10/48 ,  H01M10/625 ,  H01M10/63 ,  H01M10/653 ,  H01M50/136 ,  H01M50/213

Abstract: A power storage device that is less likely to be influenced by an ambient temperature is provided. The power storage device capable of being charged and discharged even in a low-temperature environment is provided. A first secondary battery capable of being charged and discharged even at low temperatures and a general second secondary battery are adjacent to each other in the power storage device. The power storage device having such a structure can use, as an internal heat source in a low-temperature environment, heat generated by charge and discharge of the secondary battery capable of being charged and discharged even at low temperatures. Specifically, the power storage device includes the first secondary battery and the second secondary battery adjacent to each other, the first secondary battery has flexibility, and a value of discharge capacity in discharge at −40° C. is higher than or equal to 50% of a value of discharge capacity in discharge at 25° C.

公开(公告)号：US20240097278A1

公开(公告)日：2024-03-21

申请号：US18029779

申请日：2021-10-19

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kaori OGITA ,  Tetsuji ISHITANI ,  Shuhei YOSHITOMI ,  Fumiko TANAKA ,  Shotaro MURATSUBAKI ,  Teppei OGUNI

IPC: H01M50/451 ,  H01M10/0525 ,  H01M50/403 ,  H01M50/434 ,  H01M50/491

CPC classification number: H01M50/451 ,  H01M10/0525 ,  H01M50/403 ,  H01M50/434 ,  H01M50/491

Abstract: A secondary battery with little deterioration is provided. A secondary battery with high safety is provided. A separator having excellent characteristics is provided. A separator achieving the secondary battery with high safety is provided. A novel separator is provided. In the separator, a polymer porous film and a layer including a ceramic-based material containing a metal oxide microparticle are stacked, the thickness of the layer including a ceramic-based material is greater than or equal to 1 μm and less than or equal to 100 μm, and the film thickness of the polymer porous film is greater than or equal to 4 μm and less than or equal to 50 μm.

公开(公告)号：US20230290992A1

公开(公告)日：2023-09-14

申请号：US18017191

申请日：2021-07-27

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shuhei YOSHITOMI ,  Tetsuji ISHITANI ,  Shunpei YAMAZAKI

IPC: H01M10/04 ,  H01M10/0583

CPC classification number: H01M10/0431 ,  H01M10/0404 ,  H01M10/0583

Abstract: At least part of a fabrication process of a secondary battery is automated. A highly reliable secondary battery is provided. The secondary battery is fabricated by placing a first electrode over a first exterior body; placing a separator over the first electrode; placing a second electrode over the separator; dripping an electrolyte on at least one of the first electrode, the separator, and the second electrode; impregnating the at least one of the first electrode, the separator, and the second electrode with the electrolyte; then placing a second exterior body over the first exterior body to cover the first electrode, the separator, and the second electrode; and sealing the first electrode, the separator, and the second electrode with the first exterior body and the second exterior body. The electrolyte is dripped from a position whose shortest distance from a surface where the electrolyte is dripped is greater than 0 mm and less than or equal to 1 mm.

公开(公告)号：US20180366726A1

公开(公告)日：2018-12-20

申请号：US16114312

申请日：2018-08-28

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takahiro KAWAKAMI ,  Teruaki OCHIAI ,  Shuhei YOSHITOMI ,  Takuya HIROHASHI ,  Mako MOTOYOSHI ,  Yohei MOMMA ,  Junya GOTO

IPC: H01M4/505 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/36

Abstract: To increase capacity per weight of a power storage device, a particle includes a first region, a second region in contact with at least part of a surface of the first region and located on the outside of the first region, and a third region in contact with at least part of a surface of the second region and located on the outside of the second region. The first and the second regions contain lithium and oxygen. At least one of the first region and the second region contains manganese. At least one of the first and the second regions contains an element M. The first region contains a first crystal having a layered rock-salt structure. The second region contains a second crystal having a layered rock-salt structure. An orientation of the first crystal is different from an orientation of the second crystal.

公开(公告)号：US20150014581A1

公开(公告)日：2015-01-15

申请号：US14328251

申请日：2014-07-10

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takahiro KAWAKAMI ,  Shuhei YOSHITOMI ,  Teruaki OCHIAI ,  Yumiko SAITO ,  Yohei MOMMA ,  Satoshi SEO

IPC: H01M4/505 ,  H01M4/36 ,  H01M4/58

CPC classification number: H01M4/505 ,  H01M4/364 ,  H01M4/485 ,  H01M4/525

Abstract: A positive electrode active material that achieves high capacity and high energy density of a secondary battery is provided. The positive electrode active material is represented by Li2Mn1-XAXO3 and contains a metal element, Si, or P as A. The positive electrode active material has higher discharge capacity than Li2MnO3.

Abstract translation: 提供了实现二次电池的高容量和高能量密度的正极活性物质。 正极活性物质由Li2Mn1-XAXO3表示，并含有金属元素Si或P为A.正极活性物质的放电容量高于Li2MnO3。

公开(公告)号：US20130280857A1

公开(公告)日：2013-10-24

申请号：US13917012

申请日：2013-06-13

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Masashi TSUBUKU ,  Shuhei YOSHITOMI ,  Takahiro TUJI ,  Miyuki HOSOBA ,  Junichiro SAKATA ,  Hiroyuki TOMATSU ,  Masahiko HAYAKAWA

IPC: H01L29/66

CPC classification number: H01L27/1262 ,  H01L21/02554 ,  H01L21/02565 ,  H01L21/02595 ,  H01L21/02631 ,  H01L21/02667 ,  H01L27/1248 ,  H01L27/127 ,  H01L29/66765 ,  H01L29/66969 ,  H01L29/7869

Abstract: It is an object to provide a manufacturing method of a structure of a thin film transistor including an oxide semiconductor film, in which threshold voltage at which a channel is formed is positive and as close to 0 V as possible. A protective insulating layer is formed to cover a thin film transistor including an oxide semiconductor layer that is dehydrated or dehydrogenated by first heat treatment, and second heat treatment at a temperature that is lower than that of the first heat treatment, in which the increase and decrease in temperature are repeated plural times, is performed, whereby a thin film transistor including an oxide semiconductor layer, in which threshold voltage at which a channel is formed is positive and as close to 0 V as possible without depending on the channel length, can be manufactured.

公开(公告)号：US20240429381A1

公开(公告)日：2024-12-26

申请号：US18692527

申请日：2022-09-09

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Jo SAITO ,  Atsushi KAWATSUKI ,  Yohei MOMMA ,  Shuhei YOSHITOMI ,  Kenta NAKANISHI ,  Tetsuya KAKEHATA

IPC: H01M4/525 ,  C01G51/00 ,  H01M10/0525 ,  H01M10/0569

Abstract: A method for forming a positive electrode active material that can be used for a lithium ion battery having excellent discharge characteristics even in a low-temperature environment is provided. The method includes a first step in which lithium cobalt oxide with a median diameter (D50) of less than or equal to 10 μm is heated at a temperature higher than or equal to 700° C. and lower than or equal to 1000° C. for longer than or equal to 1 hour and shorter than or equal to 5 hours, a second step in which a first mixture is formed by mixing a fluorine source and a magnesium source to the lithium cobalt oxide subjected to the first step, a third step in which the first mixture is heated at a temperature higher than or equal to 800° C. and lower than or equal to 1100° C. for longer than or equal to 1 hour and shorter than or equal to 10 hours, a fourth step in which a second mixture is formed by mixing a nickel source and an aluminum source to the first mixture subjected to the third step, and a fifth step in which the second mixture is heated at a temperature higher than or equal to 800° C. and lower than or equal to 950° C. for longer than or equal to 1 hour and shorter than or equal to 5 hours.

公开(公告)号：US20240347760A1

公开(公告)日：2024-10-17

申请号：US18293877

申请日：2022-07-26

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kazuya SHIMADA ,  Yohei MOMMA ,  Shuhei YOSHITOMI ,  Fumiko TANAKA ,  Kazutaka KURIKI

IPC: H01M10/0525 ,  H01M4/02 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0568 ,  H01M10/44

CPC classification number: H01M10/0525 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0568 ,  H01M10/443 ,  H01M2004/021

Abstract: A lithium ion battery having an excellent discharge characteristics even at temperatures below freezing is to be provided. The lithium ion battery includes a positive electrode including a positive electrode active material, an electrolyte, and a negative electrode including a negative electrode active material that is a carbon material. In the lithium ion battery, a value of discharge capacity obtained by, after performing constant current charging at a charge rate of 0.1 C (where 1 C=200 mA/g) until a voltage reaches 4.5 V and then performing constant voltage charging at 4.5 V until a current value achieves 0.01 C in an environment of 25° C., performing constant current discharging at a discharge rate of 0.1 C until a voltage reaches 2.5 V in an environment of −40° C. is higher than or equal to 50% of a value of discharge capacity obtained by, after performing constant current charging at a charge rate of 0.1 C (where 1 C=200 mA/g) until a voltage reaches 4.5 V and then performing constant voltage charging at 4.5 V until a current value achieves 0.01 C in an environment of 25° C., performing constant current discharging at a discharge rate of 0.1 C until a voltage reaches 2.5V in an environment of 25° C.

公开(公告)号：US20230387394A1

公开(公告)日：2023-11-30

申请号：US18249901

申请日：2021-10-13

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Shunpei YAMAZAKI ,  Tetsuya KAKEHATA ,  Shuhei YOSHITOMI ,  Atsushi KAWATSUKI

IPC: H01M4/36 ,  H01M4/525 ,  H01M4/58 ,  H01M4/48 ,  C01G53/00 ,  C01F7/02 ,  C01G49/00

CPC classification number: H01M4/366 ,  H01M4/525 ,  H01M4/5825 ,  H01M4/483 ,  C01G53/66 ,  C01F7/02 ,  C01G49/009 ,  H01M2004/028

Abstract: A positive electrode active material that is stable in a high potential state or a high temperature state and a highly safe secondary battery are provided. The positive electrode includes a first material and a second material and includes a region where at least part of a surface of the first material is covered with the second material. The first material includes a lithium cobalt oxide containing magnesium, fluorine, aluminum, and nickel. The second material includes a composite oxide (containing one or more selected from Fe, Ni, Co, and Mn) having an olivine crystal structure.