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公开(公告)号：US20220199973A1
公开(公告)日：2022-06-23
申请号：US17510472
申请日：2021-10-26
Inventor： TOSHIYUKI KOJIMA , AKIHIRO HORIKAWA
IPC: H01M4/36
Abstract: Positive electrode layer 20 is used for an all-solid-state battery. Positive electrode layer 20 includes positive electrode active material 2 and solid electrolyte 1. A filling rate of positive electrode layer 20 is 85% or more. A porosity of positive electrode active material 2 is 5% or less.
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公开(公告)号：US20190013129A1
公开(公告)日：2019-01-10
申请号：US16026035
申请日：2018-07-02
Inventor： MASATO MAEDE , TOSHIYUKI KOJIMA
Abstract: A dust core capable of reducing the eddy-current loss of a soft magnetic powder, and having a small loss, particularly in a high-frequency region includes a powder of a soft magnetic composition having a maximum roundness of 0.5 or more, and a mean roundness of 0.2 or more. The powder includes a pulverized powder and a spherical powder. The pulverized powder has a maximum roundness of 0.5 or more, and a mean roundness of 0.2 or more. The spherical powder has a maximum roundness of 0.9 or more, and a mean roundness of 0.5 or more.
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公开(公告)号：US20240421358A1
公开(公告)日：2024-12-19
申请号：US18817288
申请日：2024-08-28
Inventor： SHUZO TSUCHIDA , TOSHIYUKI KOJIMA
IPC: H01M10/0585 , H01M4/02 , H01M4/133 , H01M4/1393 , H01M4/36 , H01M4/62
Abstract: All-solid-state battery (100) has a structure in which positive electrode current collector (7), positive electrode layer (20) including positive electrode active material (2) and solid electrolyte (1), solid electrolyte layer (10) including solid electrolyte (5), negative electrode layer (30) including negative electrode active material (3) and solid electrolyte (4), and negative electrode current collector (8) are stacked in this order. Negative electrode active material (3) includes a plurality of flat active material particles having a structure of a plurality of stacked pieces of graphite. Negative electrode layer (30) has, in a cross section, active material orientation region (14) including two or more of a plurality of flat active material particles that are adjacently oriented. The major axis of each of the two or more flat active material particles has an angle of 0° or more and 30° or less with respect to the thickness direction of negative electrode layer (30).
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公开(公告)号：US20190156976A1
公开(公告)日：2019-05-23
申请号：US16300232
申请日：2017-04-04
Inventor： MITSUO SAITOH , YOSHIE TAKAHASHI , TAKAO KUROMIYA , TOSHIYUKI KOJIMA
Abstract: A dust core including an iron-based magnetic powder containing iron as a main component, including: a first magnetic powder which has a first peak in a particle size distribution of the iron-based magnetic powder; and a second magnetic powder which has a second peak corresponding to a particle size larger than a particle size corresponding to the first peak in the particle size distribution of the iron-based magnetic powder, and of which a crystal structure is nanocrystal or amorphous, in which a particle of the first magnetic powder and a particle of the second magnetic powder are in a state of being bonded to each other.
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公开(公告)号：US20230405627A1
公开(公告)日：2023-12-21
申请号：US18460644
申请日：2023-09-04
Inventor： AKIHIRO HORIKAWA , TOSHIYUKI KOJIMA
CPC classification number: B05C1/06 , B05C19/04 , B05C19/008
Abstract: A squeegee is to be relatively moved in a certain direction while a desired gap is being formed with respect to a base material to uniformly level a thickness of a powder layer including powder supplied on the base material, and includes: a first portion that vibrates in contact with the powder on an upstream side of a relative movement direction of the base material with respect to the squeegee; and a second portion that vibrates in contact with the powder on a downstream side of the relative movement direction of the base material with respect to the squeegee, a vibration direction of the first portion being different from a vibration direction of the second portion.
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Patent Agency Ranking
公开(公告)号：US20210351393A1
公开(公告)日：2021-11-11
申请号：US17232395
申请日：2021-04-16
Inventor： TOSHIYUKI KOJIMA , MOTOHIRO OKOCHI , SHUNICHI MATSUNO , AKIHIRO HORIKAWA
IPC: H01M4/04 , H01M10/0525 , B05C19/00
Abstract: A powder applying apparatus includes a transport device, a powder supplier, and a squeegee. The transport device moves a sheet in a predetermined direction. The powder supplier supplies powder on a surface of the sheet. The squeegee has a distance from the sheet, and the powder supplier adjusts the thickness of powder supplied onto the surface of the sheet. The squeegee vibrates at a frequency of 2 kHz or more and 300 kHz or less.
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公开(公告)号：US20230093941A1
公开(公告)日：2023-03-30
申请号：US17929752
申请日：2022-09-06
Inventor： TOSHIYUKI KOJIMA , AKIHIRO HORIKAWA , SHUZO TSUCHIDA
IPC: H01M4/04
Abstract: A powder layer composite includes a current collector, and a powder layer formed on the current collector and having a film thickness of 50 μm or more. The powder layer contains a powder made of at least one type of particle material. A concentration of a solvent contained in the powder layer is 50 ppm or less. A variation in a weight per unit area of the powder layer is 10% or less in an optional region with 30 mm×30 mm in the powder layer.
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公开(公告)号：US20220199974A1
公开(公告)日：2022-06-23
申请号：US17522968
申请日：2021-11-10
Inventor： TOSHIYUKI KOJIMA , AKIHIRO HORIKAWA
IPC: H01M4/36 , H01M10/0562 , H01M4/04 , H01M10/0585
Abstract: Positive electrode active material 2 is used for positive electrode layer 20 of all-solid-state battery 100, and contains plural secondary particles 2b in each of which plural primary particles 1a are aggregated. Plural of secondary particles 2b contain impregnation particles, the impregnation particles each being a secondary particle having a region impregnated with solid electrolyte 1 in a gap between plural primary particles 1a. The region impregnated with solid electrolyte 1 is a region in which solid electrolyte 1 is impregnated in a distance of 1 μm or more from an outer periphery of the impregnation particle toward an inside of the impregnation particle.
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9.发明申请公开(公告)号：US20190013127A1
公开(公告)日：2019-01-10
申请号：US16019458
申请日：2018-06-26
Inventor： MASATO MAEDE , KAZUTO FUKUDA , TOSHIYUKI KOJIMA , MITSUO SAITOH
IPC: H01F1/33 , H01F27/255 , B22F1/02
Abstract: A soft magnetic powder that can exhibit desirable soft magnetic characteristics. A dust core using the soft magnetic powder is also provided. The soft magnetic powder includes: a soft magnetic powder layer of an unoxidized soft magnetic material; a second oxide layer as an oxide with iron or boron residing around the soft magnetic powder layer; and a first oxide layer of an iron oxide residing around the second oxide layer. The first oxide layer and the second oxide layer reside in a region of 20 nm or more and 500 nm or less from a surface of the soft magnetic powder, and are absent in a region of more than 500 nm and 1,600 nm or less from the surface.
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10.发明申请公开(公告)号：US20190013125A1
公开(公告)日：2019-01-10
申请号：US16019469
申请日：2018-06-26
Inventor： TOSHIYUKI KOJIMA , MASATO MAEDE , TAKAO KUROMIYA
IPC: H01F1/153 , H01F27/255 , C22C45/00
Abstract: Provided herein is a dust core having high mechanical strength and high magnetic permeability. An alloy powder constituting the dust core is also provided. A soft magnetic powder is used that has a plurality of protrusions of 0.1 μm or more and 5 μm or less on an alloy powder surface. A dust core is used that contains at least 80 weight % of the soft magnetic alloy powder. A method for producing a soft magnetic powder is used that includes producing an amorphous soft magnetic alloy ribbon by liquid quenching; and pulverizing the amorphous soft magnetic alloy ribbon into a powder having a thickness of 0.1 μm or more and 40 μm or less without heat treatment. The pulverization cleaves the amorphous soft magnetic alloy ribbon, and produces a protrusion on a powder surface.
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