Patents by Inventor Yasuharu Terada

Yasuharu Terada 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: 10919468
    Abstract: A vehicular electric power supply system that is mounted in a vehicle includes: a load is configured to be supplied with electric power from one or both of a first-series electric power supply line and a second-series electric power supply line that are provided independently of each other; a first battery; a second battery; and a connection control device is configured to control connection of the first battery and the second battery to the first-series electric power supply line and the second-series electric power supply line, based on a state of the vehicle.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: February 16, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yasuhiro Taoka, Yasuharu Terada, Takahiro Ito
  • Publication number: 20200238832
    Abstract: A power source system includes a first power source, a second power source, a Direct Current to Direct Current converter, a first load including a vehicle control device configured to perform predetermined control regarding at least one of traveling, steering, and braking of the vehicle regardless of a driving operation performed by a driver of the vehicle, and an electric actuator as a control target of the vehicle control device, and connected to the first path so as to be supplied with power from the first power source, and a power source control device configured to control an operation of the Direct Current to Direct Current converter such that power is supplied to the first path from the second power source in a case where the predetermined control is performed.
    Type: Application
    Filed: April 17, 2020
    Publication date: July 30, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shu NAKAYAMA, Isao YONEYAMA, Tomohiro USAMI, Yasuharu TERADA
  • Patent number: 10723228
    Abstract: A power source system includes a first power source, a second power source, a Direct Current to Direct Current converter, a first load including a vehicle control device configured to perform predetermined control regarding at least one of traveling, steering, and braking of the vehicle regardless of a driving operation performed by a driver of the vehicle, and an electric actuator as a control target of the vehicle control device, and connected to the first path so as to be supplied with power from the first power source, and a power source control device configured to control an operation of the Direct Current to Direct Current converter such that power is supplied to the first path from the second power source in a case where the predetermined control is performed.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: July 28, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shu Nakayama, Isao Yoneyama, Tomohiro Usami, Yasuharu Terada
  • Patent number: 10601230
    Abstract: An electric power supply system for a vehicle includes a first battery, a second battery connected in parallel with the first battery, a voltage sensor configured to detect a voltage value of the second battery, a current sensor configured to detect a current value of the second battery, an electronic control unit configured to make a voltage of the alternator fluctuate according to a predetermined voltage waveform, and calculate internal resistance of the second battery using the voltage value and the current value of the second battery respectively detected by the voltage sensor and the current sensor while the electronic control unit is making the voltage of the alternator fluctuate according to the predetermined voltage waveform.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: March 24, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Sunao Horitake, Hiroshi Nate, Yasuharu Terada
  • Publication number: 20190256018
    Abstract: A vehicular electric power supply system that is mounted in a vehicle includes: a load is configured to be supplied with electric power from one or both of a first-series electric power supply line and a second-series electric power supply line that are provided independently of each other; a first battery; a second battery; and a connection control device is configured to control connection of the first battery and the second battery to the first-series electric power supply line and the second-series electric power supply line, based on a state of the vehicle.
    Type: Application
    Filed: February 11, 2019
    Publication date: August 22, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yasuhiro TAOKA, Yasuharu TERADA, Takahiro ITO
  • Publication number: 20190044344
    Abstract: An electric power supply system for a vehicle includes a first battery, a second battery connected in parallel with the first battery, a voltage sensor configured to detect a voltage value of the second battery, a current sensor configured to detect a current value of the second battery, an electronic control unit configured to make a voltage of the alternator fluctuate according to a predetermined voltage waveform, and calculate internal resistance of the second battery using the voltage value and the current value of the second battery respectively detected by the voltage sensor and the current sensor while the electronic control unit is making the voltage of the alternator fluctuate according to the predetermined voltage waveform.
    Type: Application
    Filed: October 5, 2018
    Publication date: February 7, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Sunao Horitake, Hiroshi Nate, Yasuharu Terada
  • Patent number: 10135264
    Abstract: An electric power supply system for a vehicle includes a first battery, a second battery connected in parallel with the first battery, a voltage sensor configured to detect a voltage value of the second battery, a current sensor configured to detect a current value of the second battery, an electronic control unit configured to make a voltage of the alternator fluctuate according to a predetermined voltage waveform, and calculate internal resistance of the second battery using the voltage value and the current value of the second battery respectively detected by the voltage sensor and the current sensor while the electronic control unit is making the voltage of the alternator fluctuate according to the predetermined voltage waveform.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: November 20, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Sunao Horitake, Hiroshi Nate, Yasuharu Terada
  • Publication number: 20170349048
    Abstract: A power source system includes a first power source, a second power source, a Direct Current to Direct Current converter, a first load including a vehicle control device configured to perform predetermined control regarding at least one of traveling, steering, and braking of the vehicle regardless of a driving operation performed by a driver of the vehicle, and an electric actuator as a control target of the vehicle control device, and connected to the first path so as to be supplied with power from the first power source, and a power source control device configured to control an operation of the Direct Current to Direct Current converter such that power is supplied to the first path from the second power source in a case where the predetermined control is performed.
    Type: Application
    Filed: June 2, 2017
    Publication date: December 7, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shu NAKAYAMA, Isao YONEYAMA, Tomohiro USAMI, Yasuharu TERADA
  • Patent number: 9815376
    Abstract: A power supply apparatus includes a first battery, a second battery, and an ECU configured to determine whether the following conditions i), ii), and iii) are satisfied: i) a degree of deterioration of the second battery is lower than a first threshold; ii) a state-of-charge of the second battery is lower than a second threshold; and iii) the state-of-charge is equal to or higher than a third threshold. The second threshold is higher by a prescribed value than a lowest allowable value of the state-of-charge at which the second battery can function as a backup power supply. The third threshold corresponds to the lowest allowable value. When determining that the conditions i), ii) and iii) are all satisfied, the ECU executes single-battery-using control in which regeneration control using the regenerative electric power is executed with use of the first battery and the second battery is not used for regeneration control.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: November 14, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Sunao Horitake, Yasuharu Terada, Hiroshi Nate, Takeaki Suzuki, Michihiro Miyashita, Kazuhito Eshima
  • Publication number: 20170264104
    Abstract: An electric power supply system for a vehicle includes a first battery, a second battery connected in parallel with the first battery, a voltage sensor configured to detect a voltage value of the second battery, a current sensor configured to detect a current value of the second battery, an electronic control unit configured to make a voltage of the alternator fluctuate according to a predetermined voltage waveform, and calculate internal resistance of the second battery using the voltage value and the current value of the second battery respectively detected by the voltage sensor and the current sensor while the electronic control unit is making the voltage of the alternator fluctuate according to the predetermined voltage waveform.
    Type: Application
    Filed: March 8, 2017
    Publication date: September 14, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Sunao HORITAKE, Hiroshi NATE, Yasuharu TERADA
  • Patent number: 9741992
    Abstract: A bus bar module includes bus bars and block circuits. A voltage detection circuit included in each block circuit detects voltage values of electric storage elements via lines connected to the respective bus bars. The number of the electric storage elements assigned to a first block circuit is an even number equal to or larger than a minimum number and smaller than a maximum number. The number of the electric storage elements assigned to a second block circuit is equal to or larger than the minimum number and smaller than the maximum number. The number of the electric storage elements assigned to each third block circuit is the maximum number.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: August 22, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yasuharu Terada, Norio Nishiwaki, Takayoshi Amano
  • Patent number: 9525356
    Abstract: An electric power conversion system includes a primary conversion circuit, and a secondary conversion circuit magnetically coupled to the primary conversion circuit by a transformer. At least one of the primary conversion circuit and the secondary conversion circuit includes a bypass circuit that short-circuits respective ends of a coil constituting the transformer. The primary conversion circuit, the secondary conversion circuit, the bypass circuit, and the transformer are configured such that electric power conversion is performed between any two input/output ports from among four input/output ports formed of two input/output ports of the primary conversion circuit and two input/output ports of the secondary conversion circuit.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: December 20, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takahiro Hirano, Yasuharu Terada
  • Publication number: 20160185240
    Abstract: A power supply apparatus includes a first battery, a second battery, and an ECU configured to determine whether the following conditions i), ii), and iii) are satisfied: i) a degree of deterioration of the second battery is lower than a first threshold; ii) a state-of-charge of the second battery is lower than a second threshold; and iii) the state-of-charge is equal to or higher than a third threshold. The second threshold is higher by a prescribed value than a lowest allowable value of the state-of-charge at which the second battery can function as a backup power supply. The third threshold corresponds to the lowest allowable value. When determining that the conditions i), ii) and iii) are all satisfied, the ECU executes single-battery-using control in which regeneration control using the regenerative electric power is executed with use of the first battery and the second battery is not used for regeneration control.
    Type: Application
    Filed: December 8, 2015
    Publication date: June 30, 2016
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Sunao HORITAKE, Yasuharu TERADA, Hiroshi NATE, Takeaki SUZUKI, Michihiro MIYASHITA, Kazuhito ESHIMA
  • Patent number: 9270187
    Abstract: An electric power conversion system includes: a primary electric power conversion circuit including a primary coil connected to a connection point between a plurality of transistors; a secondary electric power conversion circuit configured similarly to the primary electric power conversion circuit and including a secondary coil corresponding to the primary coil; and a control circuit controlling transfer of electric power between the primary and secondary electric power conversion circuits. The control circuit executes feedforward control for setting one of an on/off ratio of a terminal voltage signal of the primary coil and an on/off ratio of a terminal voltage signal of the secondary coil, in response to at least one of fluctuations in voltage ratio between both waveforms and fluctuations in phase symmetry between both waveforms, when the terminal voltage waveform of the primary coil and the terminal voltage waveform of the secondary coil are different from each other.
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: February 23, 2016
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kenichi Takagi, Masanori Ishigaki, Takaji Umeno, Takahiro Hirano, Jun Muto, Yasuharu Terada, Kenichiro Nagashita
  • Patent number: 9209701
    Abstract: An electric power conversion system includes: a primary electric power conversion circuit including primary right and left arms; a secondary electric power conversion circuit including secondary right and left arms; and a control circuit controlling transfer of electric power between the primary and secondary electric power conversion circuits by magnetically coupling a primary coil to a secondary coil. The control circuit sets an interphase difference in switching between right and left arm lower transistors in the primary electric power conversion circuit and an interphase difference in switching between right and left arm lower transistors in the secondary electric power conversion circuit on the basis of off times of the primary and secondary electric power conversion circuits such that a phase difference between terminal voltage waveforms of the primary and secondary coils is 0 and duty ratios of the terminal voltage waveforms are equal to each other.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: December 8, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kenichi Takagi, Masanori Ishigaki, Takaji Umeno, Kenichiro Nagashita, Takahiro Hirano, Jun Muto, Yasuharu Terada
  • Publication number: 20150243954
    Abstract: A bus bar module includes bus bars and block circuits. A voltage detection circuit included in each block circuit detects voltage values of electric storage elements via lines connected to the respective bus bars. The number of the electric storage elements assigned to a first block circuit is an even number equal to or larger than a minimum number and smaller than a maximum number. The number of the electric storage elements assigned to a second block circuit is equal to or larger than the minimum number and smaller than the maximum number. The number of the electric storage elements assigned to each third block circuit is the maximum number.
    Type: Application
    Filed: February 23, 2015
    Publication date: August 27, 2015
    Inventors: Yasuharu TERADA, Norio NISHIWAKI, Takayoshi AMANO
  • Publication number: 20140335385
    Abstract: A bus bar module may have a bus bar including a battery side terminal portion and a connection portion. The battery side terminal portion may electrically connect electrode terminals of two adjacent battery cells of a battery assembly. The connection portion may electrically connect the battery side terminal portion and a terminal of a circuit side member associated with the battery assembly. The bus bar may be configured as a single member.
    Type: Application
    Filed: May 5, 2014
    Publication date: November 13, 2014
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Masaki IKEYA, Norio NISHIWAKI, Yasuharu TERADA
  • Publication number: 20140335386
    Abstract: A bus bar module may include a circuit side member associated with a battery assembly having a plurality of battery cells arranged next to each other in an arrangement direction, and a bus bar electrically connecting the circuit side member with the battery cells of the battery assembly. A gas discharge duct may be integrated with the circuit side member and configured to allow flow therethrough of gas discharged from safety valves associated with the battery cells.
    Type: Application
    Filed: May 5, 2014
    Publication date: November 13, 2014
    Applicants: AISAN KOGYO KABUSHIKI KAISHA, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masaki IKEYA, Norio NISHIWAKI, Yasuharu TERADA
  • Publication number: 20140286055
    Abstract: An electric power conversion system includes: a primary electric power conversion circuit including a primary coil connected to a connection point between a plurality of transistors; a secondary electric power conversion circuit configured similarly to the primary electric power conversion circuit and including a secondary coil corresponding to the primary coil; and a control circuit controlling transfer of electric power between the primary and secondary electric power conversion circuits. The control circuit executes feedforward control for setting one of an on/off ratio of a terminal voltage signal of the primary coil and an on/off ratio of a terminal voltage signal of the secondary coil, in response to at least one of fluctuations in voltage ratio between both waveforms and fluctuations in phase symmetry between both waveforms, when the terminal voltage waveform of the primary coil and the terminal voltage waveform of the secondary coil are different from each other.
    Type: Application
    Filed: March 18, 2014
    Publication date: September 25, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenichi Takagi, Masanori Ishigaki, Takaji Umeno, Takahiro Hirano, Jun Muto, Yasuharu Terada, Kenichiro Nagashita
  • Publication number: 20140254209
    Abstract: An electric power conversion system includes: a primary electric power conversion circuit including primary right and left arms; a secondary electric power conversion circuit including secondary right and left arms; and a control circuit controlling transfer of electric power between the primary and secondary electric power conversion circuits by magnetically coupling a primary coil to a secondary coil. The control circuit sets an interphase difference in switching between right and left arm lower transistors in the primary electric power conversion circuit and an interphase difference in switching between right and left arm lower transistors in the secondary electric power conversion circuit on the basis of off times of the primary and secondary electric power conversion circuits such that a phase difference between terminal voltage waveforms of the primary and secondary coils is 0 and duty ratios of the terminal voltage waveforms are equal to each other.
    Type: Application
    Filed: February 21, 2014
    Publication date: September 11, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenichi Takagi, Masanori Ishigaki, Takaji Umeno, Kenichiro Nagashita, Takahiro Hirano, Jun Muto, Yasuharu Terada