Patents by Inventor Hirotaka KATAYA

Hirotaka KATAYA 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).

  • Control system, control method and integrated circuit for secondary battery protection
    Patent number: 11949258
    Abstract: A control system includes a secondary battery protection apparatus and a device. The secondary battery protection apparatus includes one or more monitoring terminals each provided in a path different from power paths, each monitoring terminal being operable for monitoring a potential at a negative electrode of a given secondary battery cell among a plurality of the secondary battery cells. The secondary battery protection apparatus includes one or more internal switches each of which is provided in an internal line between the negative electrode of a given secondary battery cell and a given monitoring terminal. The device includes a balance control circuit that adjusts, based on potentials monitored by the monitoring terminals, a current flowing into a line path that includes a corresponding internal line. The balance control circuit controls balance among the cell voltages for the secondary battery cells, based on the adjusted current.
    Type: Grant
    Filed: August 24, 2021
    Date of Patent: April 2, 2024
    Assignee: MITSUMI ELECTRIC CO., LTD.
    Inventors: Hirotaka Kataya, Iwao Kitamura
  • CONTROL SYSTEM, CONTROL METHOD AND INTEGRATED CIRCUIT FOR SECONDARY BATTERY PROTECTION
    Publication number: 20220069592
    Abstract: A control system includes a secondary battery protection apparatus and a device. The secondary battery protection apparatus includes one or more monitoring terminals each provided in a path different from power paths, each monitoring terminal being operable for monitoring a potential at a negative electrode of a given secondary battery cell among a plurality of the secondary battery cells. The secondary battery protection apparatus includes one or more internal switches each of which is provided in an internal line between the negative electrode of a given secondary battery cell and a given monitoring terminal. The device includes a balance control circuit that adjusts, based on potentials monitored by the monitoring terminals, a current flowing into a line path that includes a corresponding internal line. The balance control circuit controls balance among the cell voltages for the secondary battery cells, based on the adjusted current.
    Type: Application
    Filed: August 24, 2021
    Publication date: March 3, 2022
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Hirotaka KATAYA, Iwao KITAMURA