公开(公告)号：US11817726B2

公开(公告)日：2023-11-14

申请号：US17879394

申请日：2022-08-02

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Koji Kusunoki ,  Toshiyuki Isa ,  Akihiro Chida ,  Kouhei Toyotaka ,  Ryota Tajima

IPC: H02J7/00 ,  H02J50/10 ,  H02J7/04 ,  H02J50/40 ,  H01F27/34 ,  H02J50/12 ,  H02J7/02

CPC classification number: H02J7/0013 ,  H02J7/00032 ,  H02J7/00034 ,  H02J7/04 ,  H02J50/10 ,  H02J50/40 ,  H02J50/402 ,  H01F27/346 ,  H02J7/0048 ,  H02J7/02 ,  H02J50/12

Abstract: Deterioration of a storage battery included in an electronic device is reduced. Power consumption of an electronic device is reduced. A power feeding device having excellent performance is provided. The power feeding device includes a power feeding coil, a control circuit, and a neural network and has a function of charging a storage battery with a wireless signal supplied by the power feeding coil. The control circuit has a function of estimating a remaining capacity value of the storage battery, the control circuit has a function of supplying the estimated remaining capacity value to the neural network, the neural network outputs a value corresponding to the supplied remaining capacity value to the control circuit, the control circuit determines a charge condition for the storage battery on the basis of the value output by the neural network, and the power feeding device has a function of charging the storage battery under the determined charge condition.

公开(公告)号：US11448705B2

公开(公告)日：2022-09-20

申请号：US16753839

申请日：2018-10-25

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Ryota Tajima ,  Toshiyuki Isa ,  Akihiro Chida

IPC: G01R31/387 ,  H02J9/06

Abstract: It is difficult to know the remaining amount and the degradation state of a power storage device, and it is also difficult to estimate how long the power storage device can be used. Data obtained through midway discharge and mid-to-full charge is used as the learning data to calculate the degradation state and the capacity. In other words, the learning data includes both a discharge curve of midway discharge and a charge curve of mid-to-full charge, and neural network processing is performed with the use of the learned data.

公开(公告)号：US11201368B2

公开(公告)日：2021-12-14

申请号：US16431877

申请日：2019-06-05

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Minoru Takahashi ,  Ryota Tajima

IPC: H01M6/00 ,  H01M50/116 ,  H01M10/04 ,  H01M50/10 ,  H01M10/0525 ,  H01M10/052 ,  H01M50/124 ,  H01M50/543 ,  H01M10/0585

Abstract: A battery capable of changing its form safely is provided. A bendable battery having a larger thickness is provided. A battery with increased capacity is provided. For an exterior body of the battery, a film in the shape of a periodic wave in one direction is used. A space is provided in an area surrounded by the exterior body and between an end portion of the electrode stack that is not fixed and an interior wall of the exterior body. Furthermore, the phases of waves of a pair of portions of the exterior body between which the electrode stack is located are different from each other. In particular, the phases are different from each other by 180 degrees so that wave crest lines overlap with each other and wave trough lines overlap with each other.

公开(公告)号：US10930904B2

公开(公告)日：2021-02-23

申请号：US15471261

申请日：2017-03-28

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Ryota Tajima ,  Kazuhei Narita ,  Kensuke Yoshizumi

IPC: H01M2/10 ,  H01M2/20 ,  H01M2/02 ,  H01M2/26 ,  H01M2/30

Abstract: A battery module with high impact resistance is provided. A battery module using an elastic body such as rubber for its exterior body covering a battery is provided. A bendable battery module is provided. As the exterior body covering a battery, an elastic body such as rubber is used, and the exterior body is molded in two steps. First, a first portion provided with a depression in which a battery is stored is molded using a first mold. Next, a battery is inserted into the first portion. Subsequently, second molding is performed using a second mold so as to fill an opening of the depression in the first portion, so that a second portion is formed. The second portion serves as a cover for closing the opening of the depression in the first portion. The second portion is formed in contact with part of the electrodes in the battery and part of an end portion of the second exterior body in the battery.

公开(公告)号：US10886572B2

公开(公告)日：2021-01-05

申请号：US16802923

申请日：2020-02-27

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Masaki Yamakaji ,  Junpei Momo ,  Ryota Tajima ,  Takahiro Kasahara

IPC: H01M10/42 ,  H01M10/48 ,  H01M2/02 ,  H01M10/0525

Abstract: To provide a lithium-ion storage battery or electronic device that is flexible and highly safe. One embodiment of the present invention is a flexible storage battery including a positive electrode, a negative electrode, a separator between the positive electrode and the negative electrode, an exterior body that surrounds the positive electrode, the negative electrode, and the separator, and a wiring provided along the exterior body. At least part of the wiring is more easily breakable by deformation than the exterior body. The wiring is more vulnerable to deformation than the exterior body and thus damaged earlier than the exterior body. Damage to the wiring is detected and an alert is sent to a user; thus, the use of the storage battery can be stopped before the exterior body is damaged.

公开(公告)号：US10770910B2

公开(公告)日：2020-09-08

申请号：US15434864

申请日：2017-02-16

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Ryota Tajima ,  Kensuke Yoshizumi

IPC: H02J7/00 ,  A44C5/14 ,  H01M2/10 ,  G04G17/06 ,  G04B37/14 ,  A44C5/00 ,  G04G19/00 ,  H01M2/20

Abstract: A device capable of being used for a long time is achieved. A power supply, a connection method of a power supply, or a connecting member, for easy attachment and detachment and non-detachment when in use, is provided. A power supply, a connection method of a power supply, or a connecting member for easy replacement is provided. A highly designed power supply is provided. Power from a battery is supplied to an electronic device through a connecting member including a pipe, a spring, and a pair of pivots. The pair of pivots are electrically insulated from each other, and electrically connected to any one of a pair of electrodes of the battery. The electronic device into which the pair of pivots are inserted includes a pair of bearings capable of receiving power.

公开(公告)号：US10601066B2

公开(公告)日：2020-03-24

申请号：US14709950

申请日：2015-05-12

Applicant: Semiconductor Energy Laboratory Co., LTD.

Inventor： Minoru Takahashi ,  Ryota Tajima ,  Takuya Miwa ,  Yuugo Goto

IPC: H01M10/04 ,  H01M2/18 ,  H01M10/42 ,  H01M2/02

Abstract: In the case where a film, which has lower strength than a metal can, is used as an exterior body of a secondary battery, a current collector provided in a region surrounded by the exterior body, an active material layer provided on a surface of the current collector, or the like might be damaged when force is externally applied to the secondary battery. A secondary battery that is durable even when force is externally applied thereto is provided. A cushioning material is provided in a region surrounded by an exterior body of a secondary battery. Specifically, a cushioning material is provided on the periphery of a current collector such that a sealing portion of an exterior body (film) is located outside the cushioning material.

公开(公告)号：US10586954B2

公开(公告)日：2020-03-10

申请号：US14717615

申请日：2015-05-20

Applicant: Semiconductor Energy Laboratory Co., LTD.

Inventor： Minoru Takahashi ,  Yuugo Goto ,  Yumiko Yoneda ,  Takuya Miwa ,  Ryota Tajima

IPC: H01M2/02 ,  H01M10/04 ,  H01M2/30

Abstract: In the case where a film, which has lower strength than a metal can, is used as an exterior body of a secondary battery, a current collector provided in a region surrounded by the exterior body, an active material layer provided on a surface of the current collector, or the like might be damaged when force is externally applied to the secondary battery. A secondary battery which is resistant to external force is obtained. An opening is provided in a central portion of the secondary battery, and a terminal is formed in the opening. An outer edge of the secondary battery is fixed by thermocompression bonding. In addition, the central portion of the secondary battery is fixed by thermocompression bonding, so that the amount of bending is limited even when the outer edge portion of the secondary battery is bent.

公开(公告)号：US10541409B2

公开(公告)日：2020-01-21

申请号：US15907317

申请日：2018-02-28

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Nobuhiro Inoue ,  Kai Kimura ,  Sachiko Kataniwa ,  Ryota Tajima

IPC: H01M4/00 ,  H01M4/131 ,  H01G11/68 ,  H01M4/62 ,  H01M4/1393 ,  H01M4/133 ,  H01M4/36 ,  H01G11/06 ,  H01G11/28 ,  H01G11/50 ,  H01G11/46 ,  H01G11/58 ,  H01M4/134 ,  H01M4/38 ,  H01M4/485 ,  H01G11/66 ,  H01M4/48 ,  H01M10/0525 ,  H01M4/02

Abstract: A decomposition reaction of an electrolyte solution and the like caused as a side reaction of charge and discharge is minimized in repeated charge and discharge of a lithium ion battery or a lithium ion capacitor, and thus the lithium ion battery or the lithium ion capacitor can have long-term cycle performance. A negative electrode for a power storage device includes a negative electrode current collector and a negative electrode active material layer which includes a plurality of particles of a negative electrode active material. Each of the particles of the negative electrode active material has an inorganic compound film containing a first inorganic compound on part of its surface. The negative electrode active material layer has a film in contact with an exposed part of the negative electrode active material and part of the inorganic compound film. The film contains an organic compound and a second inorganic compound.

公开(公告)号：US10026966B2

公开(公告)日：2018-07-17

申请号：US13691929

申请日：2012-12-03

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Tetsuya Kakehata ,  Ryota Tajima ,  Teppei Oguni ,  Takeshi Osada ,  Shunpei Yamazaki ,  Shunsuke Adachi ,  Takuya Hirohashi

IPC: H01M4/70 ,  H01M4/04 ,  H01M4/66 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/36 ,  H01M4/62 ,  B82Y30/00 ,  H01M10/052 ,  H01M4/02

Abstract: A lithium secondary battery which has high charge-discharge capacity, can be charged and discharged at high speed, and has little deterioration in battery characteristics due to charge and discharge is provided. A negative electrode includes a current collector and a negative electrode active material layer. The current collector includes a plurality of protrusion portions extending in a substantially perpendicular direction and a base portion connected to the plurality of protrusion portions. The protrusion portions and the base portion are formed using the same material containing titanium. A top surface of the base portion and at least a side surface of the protrusion portion are covered with the negative electrode active material layer. The negative electrode active material layer may be covered with graphene.