Patents by Inventor Yuki Ida

Yuki Ida has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12157373
    Abstract: To provide a battery heater failure diagnostic device for a vehicle capable of diagnosing failure of a battery heater with a high degree of accuracy, a battery output sensor capable of detecting a battery output value that is a current value or a voltage value of a battery is provided. When a specified failure diagnosis condition is satisfied, a first control for stopping actuation of a battery heater and at least one non-heater device and a second control for actuating the battery heater while maintaining a stop of the actuation of the at least one non-heater device after execution of the first control are executed. The failure of the battery heater is diagnosed based on battery output values detected by the battery output sensor during execution of the first control and during execution of the second control.
    Type: Grant
    Filed: September 16, 2022
    Date of Patent: December 3, 2024
    Assignee: Mazda Motor Corporation
    Inventors: Shinya Fujioka, Atsushi Yoshimoto, Yuki Ida
  • Publication number: 20230131093
    Abstract: A battery charging control device for a vehicle is provided, which includes a motor, a high-voltage battery, a low-voltage battery, a charging connecting device, an auxiliary charging device, a temporary storage device, a storage device, a write processing device which performs write processing for writing and storing in the storage device information stored in the temporary storage device, and a control device which includes a determination module and a charging control module.
    Type: Application
    Filed: September 13, 2022
    Publication date: April 27, 2023
    Inventors: Shinya Fujioka, Masahiro Doi, Yuki Ida, Hirotaka Sugie
  • Publication number: 20230116289
    Abstract: To provide a contactor failure determination apparatus capable of appropriately determining failure of a contactor provided in a vehicle, a voltage sensor capable of detecting rising or dropping of a voltage of a second circuit including an external charger is provided. When an external charging request is made, a first control for closing each external charging contactor is executed, a second control for closing a pre-charge contactor is executed after execution of the first control, a third control for closing a second main contactor is executed after execution of the second control, and response to the voltage sensor detecting that the voltage of the second circuit has not risen after execution of the third control, it is determined that at least one of the external charging contactors has failed in an open state.
    Type: Application
    Filed: September 15, 2022
    Publication date: April 13, 2023
    Inventors: Shinya Fujioka, Haruki Yamane, Junya Kono, Yuki Ida, Yuta Otsuka
  • Publication number: 20230103895
    Abstract: To provide a battery heater failure diagnostic device for a vehicle capable of diagnosing failure of a battery heater with a high degree of accuracy, a battery output sensor capable of detecting a battery output value that is a current value or a voltage value of a battery is provided. When a specified failure diagnosis condition is satisfied, a first control for stopping actuation of a battery heater and at least one non-heater device and a second control for actuating the battery heater while maintaining a stop of the actuation of the at least one non-heater device after execution of the first control are executed. The failure of the battery heater is diagnosed based on battery output values detected by the battery output sensor during execution of the first control and during execution of the second control.
    Type: Application
    Filed: September 16, 2022
    Publication date: April 6, 2023
    Inventors: Shinya Fujioka, Atsushi Yoshimoto, Yuki Ida
  • Publication number: 20230106827
    Abstract: To provide a contactor failure determination apparatus capable of appropriately determining failure of a contactor provided in a vehicle, a voltage sensor capable of detecting rising or dropping of a voltage of a second circuit including an external charger is provided. When a vehicle start request is made, a first control for closing one external charging contactor is executed, a second control for closing a pre-charge contactor is executed after execution of the first control, a third control for closing a main contactor, which is not parallel with the pre-charge contactor, is executed after execution of the second control, and in response to the voltage sensor detecting that the voltage of the second circuit has risen after execution of the third control, it is determined that the other external charging contactor has failed in a closed state.
    Type: Application
    Filed: September 14, 2022
    Publication date: April 6, 2023
    Inventors: Shinya Fujioka, Haruki Yamane, Junya Kono, Yuki Ida, Yuta Otsuka