Patents by Inventor Tatsuhiro NUMATA

Tatsuhiro NUMATA 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: 12294065
    Abstract: A power system includes a battery module and a battery ECU. The battery module includes multiple battery stacks. Each of multiple battery stacks includes multiple battery cells, multiple detectors which independently detect physical values of the multiple battery cells, respectively, and multiple individual communicators which wirelessly output detection results of the multiple detectors. Each of the multiple individual communicators communicates a radio signal wirelessly to and from a general monitor. The multiple battery stacks and the general monitor are accommodated in a storage space in a housing having electromagnetic shielding performance. A shield is also accommodated in the storage space while facing a communication hole formed on the housing.
    Type: Grant
    Filed: March 16, 2023
    Date of Patent: May 6, 2025
    Assignee: DENSO CORPORATION
    Inventors: Kousuke Aoki, Tatsuhiro Numata
  • Publication number: 20250123336
    Abstract: A battery monitoring system includes battery measuring devices and a battery monitoring device. Each of the battery measuring devices detects voltage information on a corresponding battery. The battery monitoring device is configured to: acquire the voltage information from each of the battery measuring devices by using wireless communication; and acquire current information on current flowing through the corresponding battery from an electric-current sensor. The battery monitoring device includes a control unit and a wireless communication unit. The wireless communication unit executes wireless communication with the battery measuring devices with a predetermined period.
    Type: Application
    Filed: September 2, 2022
    Publication date: April 17, 2025
    Applicants: DENSO TEN Limited, DENSO CORPORATION
    Inventors: Ryuusuke MIYAKE, Tatsuhiro NUMATA, Takeshi IIDA
  • Patent number: 12270859
    Abstract: A battery monitoring apparatus includes a battery ECU, satellite devices each of which measures the voltage at a battery cell in response to a command signal from the battery ECU, and a wireless module which achieves a wireless communication between the battery ECU and each of the satellite devices after a wireless connection between the battery ECU and each of the satellite devices is completed. when receiving a start signal outputted before a start switch for a drive power source of the vehicle is turned on, the wireless module is activated to start the wireless connection between the battery ECU and each of the satellite devices. This establishes and completes the wireless connections faster than when the wireless module is activated simultaneously with turning on of the start switch for the drive power source. This achieves quick monitoring of the state of the battery cells.
    Type: Grant
    Filed: August 24, 2023
    Date of Patent: April 8, 2025
    Assignee: DENSO CORPORATION
    Inventors: Akihiko Ito, Tatsuhiro Numata
  • Patent number: 12266854
    Abstract: The wireless communication apparatus includes a communicator that performs at least one of transmission of signals to an antenna and reception of the signals from the antenna through a microstrip line. The microstrip line is formed with a first stub provided on the side of the communicator and a second stub provided on the side of the antenna, which stubs have resonant characteristics.
    Type: Grant
    Filed: April 12, 2023
    Date of Patent: April 1, 2025
    Assignees: DENSO TEN Limited, DENSO CORPORATION
    Inventors: Hiroyuki Fuji, Naoki Nakajima, Yuto Honda, Tatsuhiro Numata
  • Patent number: 12265130
    Abstract: A monitoring system includes monitoring devices provided in a monitored device, and a controller that wirelessly communicates with the monitoring devices to acquire monitoring information. In an operating state of the monitored device, the controller and the monitoring devices establish individual connections in which the controller acting as a communication master performs wireless communication with each of the monitoring devices acting as communication slaves. In a non-operating state of the monitored device, the controller and the monitoring devices maintain communication between the controller and the monitoring devices by establishing a sequential connection.
    Type: Grant
    Filed: August 26, 2022
    Date of Patent: April 1, 2025
    Assignee: DENSO CORPORATION
    Inventors: Shogo Shigemori, Tatsuhiro Numata, Tetsuya Watanabe
  • Patent number: 12255297
    Abstract: In a battery monitoring system including a plurality of battery modules each including one or more cells, the battery modules are connected in series to each other. The battery monitoring system monitors the state of each cell based on the voltage value of the cell and the current value of the battery modules. A current detection unit detects the current value. Each voltage detection unit is associated with the corresponding one of the battery modules and detects the voltage value. Each slave unit is associated with the corresponding one of the battery modules, and wirelessly transmits information including synchronous current and voltage values detected by the current detection unit and the voltage detection unit. A master unit receives the information transmitted from the slave units. A central monitoring unit receives the information received by the master unit.
    Type: Grant
    Filed: January 16, 2024
    Date of Patent: March 18, 2025
    Assignee: DENSO CORPORATION
    Inventors: Tatsuhiro Numata, Shunichi Kubo
  • Publication number: 20250058675
    Abstract: A battery unit configured to be exchangeable with respect to an external load, in which the battery unit includes: a battery member capable of supplying power to the external load in a state where the battery unit is connected to the external load; a battery load connected to the battery member, a measurement unit that measures at least either a current flowing through the battery load or a voltage applied to the battery load; and a control unit configured to operate with the battery member as a power source in a state where the battery unit is removed from the external load, cause a current to flow to the battery load from the battery member at a predetermined timing and acquire a measurement result measured by the measurement unit at a time when the current is caused to flow.
    Type: Application
    Filed: November 6, 2024
    Publication date: February 20, 2025
    Applicant: DENSO CORPORATION
    Inventors: Tatsuhiro NUMATA, Masaki UCHIYAMA, Taisuke KURACHI, Tetsuya WATANABE
  • Publication number: 20250055049
    Abstract: A power system includes a battery module and a battery ECU. The battery module includes multiple battery stacks. Each of multiple battery stacks includes multiple battery cells, multiple detectors which independently detect physical values of the multiple battery cells, respectively, and multiple individual communicators which wirelessly output detection results of the multiple detectors. Each of the multiple individual communicators communicates a radio signal wirelessly to and from a general monitor. The multiple battery stacks and the general monitor are accommodated in a storage space in a housing having electromagnetic shielding performance. A shield is also accommodated in the storage space while facing a communication hole formed on the housing.
    Type: Application
    Filed: October 29, 2024
    Publication date: February 13, 2025
    Applicant: DENSO CORPORATION
    Inventors: Kousuke AOKI, Tatsuhiro NUMATA
  • Patent number: 12202375
    Abstract: A battery management system includes multiple monitoring devices and a control device. The monitoring devices are disposed in a housing that accommodates a battery of a vehicle and monitors battery information indicating a state of the battery. The control device performs wireless communication with each of the monitoring devices and acquires data including the battery information to execute a predetermined process. The control device sets a cycle in which the multiple monitoring devices make a round in order to perform wireless communication with each of the monitoring devices, and is capable of adjusting the cycle.
    Type: Grant
    Filed: April 19, 2022
    Date of Patent: January 21, 2025
    Assignee: DENSO CORPORATION
    Inventors: Shogo Shigemori, Takeshi Iida, Tatsuhiro Numata
  • Publication number: 20250010758
    Abstract: A monitoring device is configured to monitor a state of a battery and transmitting the state of the battery as battery information to a control device by wireless communication. The monitoring device includes a monitoring-device-side communication unit configured to execute a connection process with a control-device-side communication unit and communicate the battery information. The monitoring-device-side communication unit is configured to set a communication speed when at least a part of a predetermined connection process of the connection process is executed with the control-device-side communication unit to be lower than a communication speed when the battery information is transmitted to the control-device-side communication unit.
    Type: Application
    Filed: June 12, 2024
    Publication date: January 9, 2025
    Inventors: SHOGO SHIGEMORI, TAKESHI IIDA, TAKUYA OHATA, TSUYOO MORIYA, TATSUHIRO NUMATA
  • Patent number: 12177920
    Abstract: A battery monitoring apparatus includes a battery ECU, a plurality of voltage monitors, and a wireless device. The wireless device contains a main unit disposed to the battery ECU and sub units disposed to the corresponding voltage monitors. In response to establishment of communication connection of wireless communication between the main unit and the sub units, the main unit wirelessly transmits a command by the battery ECU to the sub units, and the sub units wirelessly transmit voltage information detected by the voltage monitors to the main unit. The wireless device acquires voltage monitor information prior to establishment of initial communication connection, and establishes communication connection based on the voltage monitor information. The battery ECU or each voltage monitor is provided with a storage unit configured to store voltage monitor information. At re-connection, the wireless device performs communication re-connection using the voltage monitor information stored in the storage unit.
    Type: Grant
    Filed: September 13, 2021
    Date of Patent: December 24, 2024
    Assignee: DENSO CORPORATION
    Inventor: Tatsuhiro Numata
  • Patent number: 12144050
    Abstract: A battery monitoring apparatus includes a battery ECU, a plurality of voltage monitors, and a wireless device. The wireless device contains a main unit disposed to the battery ECU and sub units disposed to the corresponding voltage monitors. In response to establishment of communication connection of wireless communication between the main unit and the sub units, the main unit wirelessly transmits a command by the battery ECU to the sub units, and the sub units wirelessly transmit voltage information detected by the voltage monitors to the main unit. The wireless device acquires voltage monitor information prior to establishment of initial communication connection, and establishes communication connection based on the voltage monitor information. The battery ECU or each voltage monitor is provided with a storage unit configured to store voltage monitor information. At re-connection, the wireless device performs communication re-connection using the voltage monitor information stored in the storage unit.
    Type: Grant
    Filed: December 8, 2023
    Date of Patent: November 12, 2024
    Assignee: DENSO CORPORATION
    Inventor: Tatsuhiro Numata
  • Patent number: 12117494
    Abstract: A battery management system includes a monitoring device and a controller. The monitoring device is arranged in a housing accommodating a battery. The monitoring device monitors the battery and acquires battery monitoring information that includes information indicating a state of the battery. The controller performs wireless communication with the monitoring device and executes a predetermined process based on the battery monitoring information. The monitoring device holds imperfect information that is battery monitoring information indicating failure of data transmission/reception between the monitoring device and the controller. The monitoring device retransmits information corresponding to the imperfect information from next time the battery monitoring information is transmitted.
    Type: Grant
    Filed: August 26, 2022
    Date of Patent: October 15, 2024
    Assignee: DENSO CORPORATION
    Inventors: Takuma Nakagawa, Shogo Shigemori, Tatsuhiro Numata, Tetsuya Watanabe, Masaki Uchiyama, Taisuke Kurachi
  • Patent number: 12105153
    Abstract: A battery management system includes a monitoring device and a controller. The monitoring device is arranged in a housing accommodating a battery, monitors the battery and acquires battery monitoring information that includes information indicating a state of the battery. The controller performs wireless communication with the monitoring device and execute a predetermined process based on the battery monitoring information. The controller transmits a request for battery monitoring information to the monitoring device. The monitoring device transmits the battery monitoring information to the controller in response to the request. The controller determines whether missing of the battery monitoring information has occurred based on a correlation between the battery monitoring information acquired from the monitoring device via wireless communication and relationship information held by the controller related to the battery monitoring information.
    Type: Grant
    Filed: August 26, 2022
    Date of Patent: October 1, 2024
    Assignee: DENSO CORPORATION
    Inventors: Takuya Ohata, Shogo Shigemori, Tatsuhiro Numata, Tetsuya Watanabe, Masaki Uchiyama, Taisuke Kurachi
  • Publication number: 20240322269
    Abstract: A power system includes a battery module and a battery ECU. The battery module includes multiple battery stacks. Each of multiple battery stacks includes multiple battery cells, multiple detectors which independently detect physical values of the multiple battery cells, respectively, and multiple individual communicators which wirelessly output detection results of the multiple detectors. Each of the multiple individual communicators communicates a radio signal wirelessly to and from a general monitor. The multiple battery stacks and the general monitor are accommodated in a storage space in a housing having electromagnetic shielding performance. A shield is also accommodated in the storage space while facing a communication hole formed on the housing.
    Type: Application
    Filed: June 6, 2024
    Publication date: September 26, 2024
    Applicant: DENSO CORPORATION
    Inventors: Kousuke AOKI, Tatsuhiro NUMATA
  • Publication number: 20240304080
    Abstract: A control apparatus performing a wireless communication with a supervisory apparatus that acquires battery information indicating a battery state and transmits the acquired battery information, and controlling the supervisory apparatus based on the battery information. The control apparatus includes a wireless communication unit that wirelessly transmits a plurality of commands which are combined to the supervisory apparatus corresponding to a control period set for a control of monitoring the battery state.
    Type: Application
    Filed: March 11, 2024
    Publication date: September 12, 2024
    Applicant: DENSO CORPORATION
    Inventors: Shogo SHIGEMORI, Takeshi IIDA, Tatsuhiro NUMATA, Tetsuya WATANABE, Hironori TSUCHIYA, Takuya HARADA, Kenji YAMADA
  • Publication number: 20240272226
    Abstract: A battery monitoring system includes a battery, a battery monitoring device that monitors a state of the battery, and a battery control device that performs wireless communication with the battery monitoring device to acquire battery information representing results of the monitoring by the battery monitoring device and execute various controls. Moreover, the battery monitoring device is configured to execute, while executing a first process between it and the battery control device via the wireless communication, a second process that is different from the first process.
    Type: Application
    Filed: April 22, 2024
    Publication date: August 15, 2024
    Applicant: DENSO CORPORATION
    Inventor: Tatsuhiro NUMATA
  • Patent number: 12036887
    Abstract: A battery management system includes a monitoring device and a control device. The control device transmits request data requesting transmission of battery information, and the monitoring device transmits response data including the battery information to the control device. The control device makes next request data include communication establishment information and transmits the next request data. The monitoring device includes a transmission buffer capable of individually accumulating the battery information for multiple times. The monitoring device deletes the battery information corresponding to communication establishment from the transmission buffer, and holds the battery information corresponding to communication failure in the transmission buffer based on the communication establishment information.
    Type: Grant
    Filed: March 4, 2022
    Date of Patent: July 16, 2024
    Assignee: DENSO CORPORATION
    Inventors: Takeshi Iida, Shogo Shigemori, Tatsuhiro Numata
  • Patent number: 12024054
    Abstract: A battery management system in a vehicle includes: monitoring devices arranged in a housing accommodating battery; and a control device arranged in the housing, acquiring battery information from the monitoring devices, and performing a predetermined process. The control device stores, in advance as learning data, data that correlates with an electric field intensity in the housing for frequency channels that are usable to transmit and receive data to and from each of the monitoring devices performing wireless communication. The control device determines a target frequency channel of the frequency channel hopping based on the learning data.
    Type: Grant
    Filed: March 21, 2022
    Date of Patent: July 2, 2024
    Assignee: DENSO CORPORATION
    Inventors: Shogo Shigemori, Takeshi Iida, Tatsuhiro Numata
  • Patent number: 12024053
    Abstract: A battery management system includes monitoring devices arranged in a housing that houses batteries and a control device. The monitoring device includes (i) a monitoring IC capable of acquiring battery information and (ii) a wireless IC. At a start-up time of the plurality of monitoring devices, each of the wireless ICs performs an advertising operation in a cyclic advertising event for establishing a connection of wireless communication between the plurality of monitoring devices and the control device, and the control device performs a scan operation. The wireless IC of each of the two or more monitoring devices has, respectively, an event management unit that manages a generation cycle of the adverting event, for performing the advertising operation at respectively different timings.
    Type: Grant
    Filed: February 17, 2022
    Date of Patent: July 2, 2024
    Assignee: DENSO CORPORATION
    Inventors: Shogo Shigemori, Takeshi Iida, Tatsuhiro Numata