公开(公告)号：US20210408593A1

公开(公告)日：2021-12-30

申请号：US17468766

申请日：2021-09-08

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Yumiko YONEDA ,  Masaki YAMAKAJI ,  Ryota TAJIMA ,  Masaaki HIROKI

IPC: H01M10/0565 ,  H01M4/02 ,  H01M4/13 ,  H01M10/04 ,  H01M10/052 ,  H01M10/0585

Abstract: A gel electrolyte and a separator are provided between the positive electrode current collector and the negative electrode current collector. The plurality of positive electrode current collectors and the plurality of negative electrode current collectors are stacked such that surfaces of negative electrodes with which active material layers are not coated or surfaces of positive electrodes with which active material layers are not coated are in contact with each other.

公开(公告)号：US20210288357A1

公开(公告)日：2021-09-16

申请号：US16603487

申请日：2018-04-20

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kazutaka KURIKI ,  Ryota TAJIMA ,  Kouhei TOYOTAKA ,  Hideaki SHISHIDO ,  Toshiyuki ISA

IPC: H01M10/48 ,  H01M10/44 ,  G06N3/04 ,  G06N3/063 ,  H02J7/00

Abstract: A power storage system with excellent characteristics is provided. A power storage system with a high degree of safety is provided. A power storage system with less deterioration is provided. A storage battery with excellent characteristics is provided. The power storage system includes a neural network and a storage battery. The neural network includes an input layer, an output layer, and one or more hidden layers between the input layer and the output layer. The predetermined hidden layer is connected to the previous hidden layer or the previous input layer by a predetermined weight coefficient, and connected to the next hidden layer or the next output layer by a predetermined weight coefficient. In the storage battery, voltage and time at which the voltage is obtained are measured as one of sets of data. The sets of data measured at different times are input to the input layer and the operational condition of the storage battery is changed in accordance with a signal output from the output layer.

公开(公告)号：US20210190471A1

公开(公告)日：2021-06-24

申请号：US17263170

申请日：2019-07-24

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takayuki IKEDA ,  Ryota TAJIMA ,  Yuki OKAMOTO ,  Shunpei YAMAZAKI

IPC: G01B7/16 ,  H03K5/24 ,  H03K21/08 ,  H01L27/105 ,  H01L27/12 ,  H01L29/423 ,  H01L29/786

Abstract: An anomaly detection system that outputs an anomaly detection signal before a safety valve of a secondary battery is opened is provided. The anomaly detection system includes a strain sensor, a memory, and a comparator. The memory has a function of retaining an analog potential, and the comparator has a function of comparing a potential output by the strain sensor and the analog potential retained by the memory. The strain sensor is attached to the secondary battery before use, and a predetermined potential is retained in the memory. When a housing of the secondary battery expands while the secondary battery is used, and the potential output by the strain sensor becomes higher (or lower) than the predetermined potential, an anomaly detection signal is output.

公开(公告)号：US20210005853A1

公开(公告)日：2021-01-07

申请号：US17000941

申请日：2020-08-24

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Ryota TAJIMA

IPC: H01M2/02 ,  H01M10/04

Abstract: A secondary battery with high capacity per unit volume can be provided. A flexible secondary battery with a novel structure can be provided. A secondary battery that can be bent repeatedly can be provided. A highly reliable secondary battery can be provided. A long-life secondary battery can be provided. A secondary battery comprises an inner structure and an exterior body that surrounds the inner structure. The inner structure comprises a positive electrode and a negative electrode. The exterior body comprises a first exterior film and a second exterior film. A region comprising reduced graphene oxide lies between the first exterior film and the second exterior film. The graphene oxide preferably comprises a region where the concentration of oxygen is higher than or equal to 2 atomic percent and lower than or equal to 20 atomic percent.

公开(公告)号：US20200295413A1

公开(公告)日：2020-09-17

申请号：US16640233

申请日：2018-08-28

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Shunpei YAMAZAKI ,  Koji KUSUNOKI ,  Kazunori WATANABE ,  Ryota TAJIMA ,  Hideaki SHISHIDO ,  Kensuke YOSHIZUMI

IPC: H01M10/48 ,  H01Q1/38 ,  H01Q1/22 ,  H01M2/10 ,  G01R31/382 ,  G01R31/371 ,  G01K1/14 ,  G06N3/04

Abstract: A semiconductor device capable of monitoring the state of a battery or the like is provided. The states of a plurality of batteries in a battery module is easily acquired. The semiconductor device that can be attached to an electrode of a battery or the like includes a first substrate, an element layer, and first to third conductive layers. The element layer includes a first circuit and a second circuit and is provided on a side of a first surface of the first substrate. The first conductive layer and the second conductive layer are provided on a side of a second surface positioned opposite to the first surface of the first substrate. The first circuit is electrically connected to each of the first conductive layer and the second conductive layer through an opening provided in the first substrate. The third conductive layer is provided to be stacked on a side opposite to the first substrate side of the element layer and electrically connected to the second circuit. The first conductive layer and the second conductive layer each function as a terminal, and the third conductive layer functions as an antenna.

公开(公告)号：US20180226629A1

公开(公告)日：2018-08-09

申请号：US15944023

申请日：2018-04-03

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Masaaki HIROKI ,  Ryota TAJIMA

IPC: H01M4/02 ,  H01M4/139 ,  H01M4/04

CPC classification number: H01M4/02 ,  H01M4/0404 ,  H01M4/139 ,  H01M2004/021 ,  H01M2220/30

Abstract: Part of an electrode, specifically a current collector and an active material layer, for a secondary battery is subjected to cutting processing to have a complex shape. For example, a stack of the first current collector and the first active material layer has a first slit and a second slit. The first slit extends from a first edge of the stack. The second slit extends from a second edge of the stack, is the slit closest to an electrode tab, and is not parallel or vertical to the longest edge of the current collector.

公开(公告)号：US20180198106A1

公开(公告)日：2018-07-12

申请号：US15914590

申请日：2018-03-07

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Minoru TAKAHASHI ,  Ryota TAJIMA

IPC: H01M2/30 ,  H01M10/0585 ,  H01M10/0525 ,  H01M2/06 ,  H01M2/26

CPC classification number: H01M2/30 ,  H01M2/06 ,  H01M2/266 ,  H01M10/0525 ,  H01M10/0585 ,  Y10T29/49108

Abstract: Provided is a power storage device having a positive electrode and a negative electrode which are enveloped in an exterior body. The positive electrode has a first tab region which extends outside the exterior body so as to electrically connect the positive electrode to a positive electrode lead. Similarly, the negative electrode has a second tab region which extends outside the exterior body so as to electrically connect the negative electrode to a negative electrode lead. Each of the first tab region and the second tab region has a plurality of holes which are placed in the exterior body. A method for fabricating the power storage device is also disclosed.

公开(公告)号：US20180012915A1

公开(公告)日：2018-01-11

申请号：US15677097

申请日：2017-08-15

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kazutaka KURIKI ,  Ryota TAJIMA ,  Tamae MORIWAKA

IPC: H01L27/13 ,  H01L27/12 ,  H01G11/46 ,  H01G11/56 ,  H01G11/84 ,  H01G11/08 ,  H01M10/0562 ,  H01M10/052 ,  H01L29/786 ,  H01L29/66 ,  H01L29/24 ,  H01M10/0585 ,  H01M10/0565

CPC classification number: H01L27/13 ,  H01G11/08 ,  H01G11/46 ,  H01G11/56 ,  H01G11/84 ,  H01L27/1225 ,  H01L27/124 ,  H01L27/1248 ,  H01L27/1255 ,  H01L27/1259 ,  H01L29/24 ,  H01L29/66969 ,  H01L29/7869 ,  H01M10/052 ,  H01M10/0562 ,  H01M10/0565 ,  H01M10/0585 ,  H01M2300/0065 ,  H01M2300/0071 ,  H01M2300/0082 ,  Y02E60/122 ,  Y02E60/13 ,  Y02P70/54 ,  Y10T29/49115

Abstract: Disclosed is a power storage element including a positive electrode current collector layer and a negative electrode current collector layer which are arranged on the same plane and can be formed through a simple process. The power storage element further includes a positive electrode active material layer on the positive electrode current collector layer; a negative electrode active material layer on the negative electrode current collector layer; and a solid electrolyte layer in contact with at least the positive electrode active material layer and the negative electrode active material layer. The positive electrode active material layer and the negative electrode active material layer are formed by oxidation treatment.

公开(公告)号：US20170373285A1

公开(公告)日：2017-12-28

申请号：US15626757

申请日：2017-06-19

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Ryota TAJIMA ,  Kensuke YOSHIZUMI

IPC: H01M2/02 ,  H01M10/0525 ,  H01M10/0585

CPC classification number: H01M2/0275 ,  H01M2/0207 ,  H01M2/266 ,  H01M4/661 ,  H01M10/0525 ,  H01M10/0585 ,  H01M2220/30

Abstract: To provide a battery capable of changing in shape safely. To provide a battery capable of repeatedly bent. The battery includes a first lead, a second lead, a first current collector, and a second current collector. The first current collector includes a first portion bonded to the first lead and a second portion coated with a first active material. The second current collector includes a third portion bonded to the second lead and a fourth portion coated with a second active material. The first lead, the second portion, and the fourth portion overlap with each other in a portion. The second lead, the second portion, and the fourth portion overlap with each other in a portion.

公开(公告)号：US20170117589A1

公开(公告)日：2017-04-27

申请号：US15334571

申请日：2016-10-26

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Ryota TAJIMA ,  Teppei OGUNI ,  Kazuhei NARITA ,  Junya GOTO ,  Ai NAKAGAWA ,  Minoru TAKAHASHI

IPC: H01M10/42 ,  H01M4/587 ,  H01M4/04 ,  H01M4/62 ,  H01M4/66 ,  G01R31/36 ,  H01M10/0569 ,  H01M2/16 ,  H01M10/0567 ,  H05K5/00 ,  G01R31/02 ,  H01M10/0525 ,  H01M4/525

CPC classification number: H01M10/4235 ,  G01R31/02 ,  G01R31/3832 ,  H01M2/1653 ,  H01M4/0404 ,  H01M4/0435 ,  H01M4/0471 ,  H01M4/525 ,  H01M4/587 ,  H01M4/622 ,  H01M4/623 ,  H01M4/625 ,  H01M4/661 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2220/30 ,  H01M2300/0037 ,  H05K5/0017 ,  H05K5/0086 ,  Y02T10/7011

Abstract: To provide a power storage device whose charging and discharging characteristics are unlikely to be degraded by heat treatment. To provide a power storage device that is highly safe against heat treatment. The power storage device includes a positive electrode, a negative electrode, a separator, an electrolytic solution, and an exterior body. The separator is located between the positive electrode and the negative electrode. The separator contains polyphenylene sulfide. The electrolytic solution contains a solute and two or more kinds of solvents. The solute contains LiFSA at a concentration of higher than or equal to 0.1 wt % and lower than or equal to 50 wt % in the electrolytic solution. One of the solvents is propylene carbonate.