公开(公告)号：US20240405302A1

公开(公告)日：2024-12-05

申请号：US18640388

申请日：2024-04-19

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Keisuke UKITA ,  Yusuke KURUMA ,  Tsubasa MIGITA ,  Kei MORIKAWA ,  Yasumasa OGUMA

IPC: H01M10/48 ,  B60L3/00 ,  H01M10/52 ,  H01M50/249

Abstract: A power storage device is a power storage device including: a battery cell having a sulfide solid electrolyte; a case that accommodates the battery cell; and at least one gas collection unit that is disposed in the case and that detects hydrogen sulfide, wherein a protruding portion is formed in a bottom surface of an inner surface of the case, and the gas collection unit is disposed in the protruding portion.

公开(公告)号：US20250038377A1

公开(公告)日：2025-01-30

申请号：US18645639

申请日：2024-04-25

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Keisuke UKITA ,  Yusuke KURUMA ,  Tsubasa MIGITA ,  Kei MORIKAWA ,  Yasumasa OGUMA

IPC: H01M50/569 ,  H01M50/105

Abstract: A cell is a sulfide-based all-solid-state cell. The bus bar of the battery module composed of cells electrically connected in series is connected to the voltage detecting circuit via a printed circuit board including a first conductive trace, a second conductive trace, and a third conductive trace. A portion of the third conductive trace is exposed from the insulating coating film by a cutout portion (missing portion) of the insulating coating film. When the difference between the cell voltage between the first conductive trace and the second conductive trace and the cell voltage between the first conductive trace and the third conductive trace is equal to or larger than a predetermined value, it is determined that the exposed portion of the third conductive trace has been corroded by gas generated from the cell and that gas has been generated from the cell.

公开(公告)号：US20250128604A1

公开(公告)日：2025-04-24

申请号：US18892691

申请日：2024-09-23

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Tsubasa MIGITA ,  Yasumasa OGUMA ,  Kei MORIKAWA ,  Keisuke UKITA ,  Yusuke KURUMA

IPC: B60L3/00 ,  B60L58/26 ,  G07C5/08

Abstract: An ECU executes a process including: acquiring a result of detection; determining whether a vehicle is being stopped; determining, when the vehicle is being stopped, whether an output value of a hydrogen sulfide sensor is a first threshold value or more; turning on a warning light when the output value is the first threshold value or more; determining, when the vehicle is not being stopped, whether the output value of the hydrogen sulfide sensor is a second threshold value or more; and turning on a warning light when the output value is the second threshold value or more.

公开(公告)号：US20250023134A1

公开(公告)日：2025-01-16

申请号：US18644736

申请日：2024-04-24

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Tsubasa MIGITA ,  Masahide IIDA ,  Yasumasa OGUMA ,  Yusuke KURUMA ,  Keisuke UKITA

IPC: H01M10/613 ,  H01M10/0585 ,  H01M10/633 ,  H01M10/647 ,  H01M10/6561 ,  H01M10/6568 ,  H01M50/105 ,  H01M50/178 ,  H01M50/188 ,  H01M50/193

Abstract: In a laminated all-solid-state battery, a negative electrode terminal and a positive electrode terminal around which a resin sheet is wound are sandwiched between exterior members (laminate films), and the exterior members are joined by heat welding. The laminated all-solid-state battery is in contact with the heat exchanger via a heat conductive sheet. When the terminal temperature detected by the temperature sensor provided at the negative electrode terminal and the positive electrode terminal is equal to or higher than a predetermined value, the flow rate control valve is fully closed and the flow rate control valve is fully opened. The cooling amount of the joint portion in which the negative electrode terminal and the positive electrode terminal extend increases, the temperature of the joint portion decreases, the deformation of the resin sheet is suppressed, and the unsealing of the seal is suppressed.

公开(公告)号：US20250023131A1

公开(公告)日：2025-01-16

申请号：US18443745

申请日：2024-02-16

Applicant: Toyota Jidosha Kabushiki Kaisha

Inventor： Keisuke UKITA ,  Yusuke Kuruma ,  Tsubasa Migita ,  Kei Morikawa ,  Yasumasa Oguma

IPC: H01M10/52 ,  H01M10/0562 ,  H01M10/48

Abstract: The unit cell is composed of a sulfide-based all-solid-state battery. The battery pack includes a battery module in which a plurality of unit cells is stacked between a pair of end plates. The battery module is housed in a battery case. A duct is attached to the opening formed in the ceiling surface of the upper case. A desulfurization agent is disposed inside the duct, and is configured as a desulfurization unit. A hydrogen sulfide sensor is disposed inside the duct. By detecting the hydrogen sulfide by the hydrogen sulfide sensor, it is possible to sense that the adsorption amount of the hydrogen sulfide of the desulfurization agent is saturated or that there is a possibility of saturation.

公开(公告)号：US20240409003A1

公开(公告)日：2024-12-12

申请号：US18648665

申请日：2024-04-29

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Keisuke UKITA ,  Yusuke KURUMA ,  Tsubasa MIGITA ,  Kei MORIKAWA ,  Yasumasa OGUMA

IPC: B60L58/18 ,  B60L58/14

Abstract: When an ECU determines that a gas concentration within a battery pack is increasing, the ECU performs processing including: obtaining positional information; obtaining an amount of insolation; and performing gas exhaust processing when the ECU determines that a vehicle is traveling, determines that the position of the vehicle is a position where there is no cover above the vehicle, and determines that the position of the vehicle is a position where exhaust has no influence.