公开(公告)号：US20240387809A1

公开(公告)日：2024-11-21

申请号：US18632926

申请日：2024-04-11

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Naohiro MASHIMO ,  Mitsutoshi Otaki ,  Jun Yoshida

IPC: H01M4/38 ,  H01M4/02 ,  H01M10/0525

Abstract: The present disclosure provides a method for manufacturing a silicon clathrate electrode active material capable of improving the treatment efficiency of a sodium-containing silicon clathrate in a sodium removal step and capable of reducing the amount of sodium remaining in the obtained silicon clathrate electrode active material, and a method for manufacturing a lithium-ion battery comprising manufacturing such a silicon clathrate electrode active material. The method of the present disclosure for manufacturing a silicon clathrate electrode active material comprises (a) providing a sodium-containing silicon clathrate; and (b) contacting the sodium-containing silicon clathrate with a hydrogen fluoride solution to remove at least a portion of sodium from the sodium-containing silicon clathrate.

公开(公告)号：US20240380233A1

公开(公告)日：2024-11-14

申请号：US18418475

申请日：2024-01-22

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hideki HAGIWARA ,  Hiroshi Nagase ,  Yasumasa Oguma ,  Jun Yoshida ,  Tsubasa Migita ,  Yoshihiro Uchida

IPC: H02J7/00 ,  H01M10/46 ,  H01M10/48

Abstract: The ECU performs a step of determining whether charging/discharging control is being executed, a step of acquiring the temperature of the terminal portion when it is determined that charging/discharging control is being executed, and a step of determining the charging power limit value, a step of setting a discharge power limit value, and a step of performing charge/discharge control using the set charge power limit value and the set discharge power limit value.

公开(公告)号：US12142728B2

公开(公告)日：2024-11-12

申请号：US18462729

申请日：2023-09-07

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Jun Yoshida ,  Shinya Shiotani ,  Masaru Kubota ,  Yohei Shindo ,  Takeshi Usami

IPC: H01M10/0562 ,  H01M4/02 ,  H01M4/48 ,  H01M10/44

Abstract: A solid-state battery having a low heat generation amount and low resistance, and a method for producing the same. The solid-state battery is a solid-state battery comprising: a cathode comprising a cathode layer that contains an oxide-based cathode active material, an anode comprising an anode layer that contains an anode active material, and a solid electrolyte layer being disposed between the cathode layer and the anode layer and containing a solid electrolyte, wherein at least any one of the cathode layer and the solid electrolyte layer contains a sulfide-based solid electrolyte, and wherein the sulfide-based solid electrolyte comprises a high oxygen concentration layer on a contact surface with the oxide-based cathode active material, the high oxygen concentration layer having a higher oxygen element concentration than other parts except the contact surface.

公开(公告)号：US20240351474A1

公开(公告)日：2024-10-24

申请号：US18413263

申请日：2024-01-16

Applicant: Toyota Jidosha Kabushiki Kaisha

Inventor： Mitsutoshi OTAKI ,  Shinji Nakanishi ,  Tetsuya Waseda ,  Jun Yoshida ,  Tsubasa Migita ,  Yoshihiro Uchida

IPC: B60L58/22 ,  B60L53/62 ,  H01M10/46 ,  H02J7/00

CPC classification number: B60L58/22 ,  B60L53/62 ,  H01M10/46 ,  H02J7/0014 ,  H02J7/0048 ,  H02J7/00712

Abstract: An all-solid-state battery system includes an assembled battery configured by connecting a plurality of cells, and a control device that performs charge control and discharge control of the assembled battery. Each of the plurality of cells is an all-solid-state battery. The control device is configured to perform an equalization process of evenly approximating the amount of stored electricity between the cells in the plateau region in the relationship between the voltage and the amount of stored electricity of the assembled battery in the charge control or the discharge control of the assembled battery.

公开(公告)号：US20240266630A1

公开(公告)日：2024-08-08

申请号：US18405334

申请日：2024-01-05

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hideki Hagiwara ,  Hiroshi Nagase ,  Yasumasa Oguma ,  Jun Yoshida ,  Tsubasa Migita ,  Yoshihiro Uchida

IPC: H01M10/633 ,  H01M10/0562 ,  H01M10/48 ,  H01M50/317 ,  H01M50/367 ,  H01M50/392

CPC classification number: H01M10/633 ,  H01M10/0562 ,  H01M10/48 ,  H01M50/317 ,  H01M50/367 ,  H01M50/392 ,  H01M2220/20 ,  H01M2300/0068

Abstract: A battery system includes: a battery case; a battery housed in the battery case, the battery being composed of a sulfide-based all-solid-state battery; a first detection unit located on a bottom surface of the battery case inside the battery case and configured to detect hydrogen sulfide; a second detection unit located vertically above the bottom surface inside the battery case and configured to detect hydrogen sulfide; and a control device. The control device includes an abnormality processing unit configured to perform an abnormality process based on detection results from the first detection unit and the second detection unit. The abnormality processing unit is configured to perform a first abnormality process when hydrogen sulfide is detected only by the first detection unit, and to perform a second abnormality process when hydrogen sulfide is detected by the second detection unit.

公开(公告)号：US11901556B2

公开(公告)日：2024-02-13

申请号：US17960597

申请日：2022-10-05

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroyuki Yamaguchi ,  Hironori Daikoku ,  Jun Yoshida ,  Kazuhiro Suzuki ,  Mitsutoshi Otaki

IPC: H01M4/58 ,  C01B33/06 ,  H01M10/0525 ,  H01M10/0565

CPC classification number: H01M4/58 ,  C01B33/06 ,  C01P2002/72 ,  C01P2002/77 ,  C01P2006/40

Abstract: A main object of the present disclosure is to provide an active material wherein an expansion upon intercalation of a metal ion such as a Li ion is suppressed. The present disclosure achieves the object by providing an active material comprising a silicon clathrate type crystal phase, and the active material includes a Na element, a Si element and a M element that is a metal element with an ion radius larger than the Si element, and a proportion of the M element to a total of the Si element and the M element is 0.1 atm % or more and 5 atm % or less.

公开(公告)号：US11894551B2

公开(公告)日：2024-02-06

申请号：US17329480

申请日：2021-05-25

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kazuhiro Suzuki ,  Jun Yoshida

IPC: H01M4/38 ,  H01M4/04 ,  H01M4/36

CPC classification number: H01M4/386 ,  H01M4/0471 ,  H01M4/366

Abstract: A main object of the present disclosure is to provide an active material wherein a volume variation due to charge/discharge is small. The present disclosure achieves the object by providing an active material comprising at least Si and Al, including a silicon clathrate type crystal phase, and a proportion of the Al to a total of the Si and the Al is 0.1 atm % or more and 1 atm % or less.

公开(公告)号：US11380887B2

公开(公告)日：2022-07-05

申请号：US16658248

申请日：2019-10-21

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Satoshi Wakasugi ,  Jun Yoshida

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/40 ,  H01M4/02

Abstract: Provided is an anode active material configured to achieve both an increase in the coulombic efficiency during initial charge and discharge of an all-solid-state battery, and suppression of an increase in the resistance of the all-solid-state battery. The anode active material may be an anode active material, wherein the anode active material is an anode active material for use in all-solid-state batteries; wherein the anode active material comprises a lithium-silicon alloy and elemental silicon; and wherein the anode active material has peaks at positions of 2θ=20.2°±0.5°, 23.3°±0.5°, 40.5°±0.5°, and 46.0°±0.5° in a XRD spectrum obtained by XRD measurement using CuKα radiation.

公开(公告)号：US20250112231A1

公开(公告)日：2025-04-03

申请号：US18754431

申请日：2024-06-26

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Mitsutoshi Otaki ,  Jun Yoshida ,  Masafumi Nose

IPC: H01M4/38 ,  H01M4/02 ,  H01M4/134 ,  H01M10/0562

Abstract: In the present disclosure, the problem is solved by providing an electrode active material of which volume change due to charging and discharging is small. The electrode active material has a silicon-clathrate-II-type crystal phase. In the electrode active material, a five-membered ring size in the crystal phase is 3.752 Å or more and 3.780 Å or less.

公开(公告)号：US11851733B2

公开(公告)日：2023-12-26

申请号：US17844175

申请日：2022-06-20

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroyuki Kawaura ,  Yasuhito Kondo ,  Ryo Suzuki ,  Hiroshi Nozaki ,  Jun Yoshida ,  Tetsuya Waseda ,  Mitsutoshi Otaki

IPC: C22C1/08 ,  H01M10/0525 ,  C22C1/10 ,  C22C29/18

CPC classification number: C22C1/08 ,  C22C1/1094 ,  C22C29/18 ,  H01M10/0525

Abstract: The manufacturing method of a porous silicon material of the present disclosure includes a particle forming step of melting a raw material containing Al as a first element in an amount of 50% by mass or more and Si in an amount of 50% by mass or less to obtain a silicon alloy, a pore forming step of removing the first element from the silicon alloy to obtain a porous material, and a heat treatment step of heating the porous material to diffuse elements other than Si to a surface of the porous material.