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).
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Patent number: 11752875Abstract: 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: GrantFiled: December 9, 2022Date of Patent: September 12, 2023Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shu Nakayama, Isao Yoneyama, Tomohiro Usami, Yasuharu Terada
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Patent number: 11752874Abstract: 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: GrantFiled: October 21, 2021Date of Patent: September 12, 2023Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shu Nakayama, Isao Yoneyama, Tomohiro Usami, Yasuharu Terada
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Publication number: 20230104493Abstract: 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: ApplicationFiled: December 9, 2022Publication date: April 6, 2023Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shu NAKAYAMA, Isao YONEYAMA, Tomohiro USAMI, Yasuharu TERADA
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Patent number: 11312239Abstract: 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: GrantFiled: April 17, 2020Date of Patent: April 26, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shu Nakayama, Isao Yoneyama, Tomohiro Usami, Yasuharu Terada
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Publication number: 20220041059Abstract: 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: ApplicationFiled: October 21, 2021Publication date: February 10, 2022Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shu NAKAYAMA, Isao YONEYAMA, Tomohiro USAMI, Yasuharu TERADA
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Patent number: 10919468Abstract: 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: GrantFiled: February 11, 2019Date of Patent: February 16, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yasuhiro Taoka, Yasuharu Terada, Takahiro Ito
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Publication number: 20200238832Abstract: 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: ApplicationFiled: April 17, 2020Publication date: July 30, 2020Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shu NAKAYAMA, Isao YONEYAMA, Tomohiro USAMI, Yasuharu TERADA
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Patent number: 10723228Abstract: 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: GrantFiled: June 2, 2017Date of Patent: July 28, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shu Nakayama, Isao Yoneyama, Tomohiro Usami, Yasuharu Terada
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Patent number: 10601230Abstract: 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: GrantFiled: October 5, 2018Date of Patent: March 24, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Sunao Horitake, Hiroshi Nate, Yasuharu Terada
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Publication number: 20190256018Abstract: 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: ApplicationFiled: February 11, 2019Publication date: August 22, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yasuhiro TAOKA, Yasuharu TERADA, Takahiro ITO
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Publication number: 20190044344Abstract: 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: ApplicationFiled: October 5, 2018Publication date: February 7, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Sunao Horitake, Hiroshi Nate, Yasuharu Terada
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Patent number: 10135264Abstract: 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: GrantFiled: March 8, 2017Date of Patent: November 20, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Sunao Horitake, Hiroshi Nate, Yasuharu Terada
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Publication number: 20170349048Abstract: 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: ApplicationFiled: June 2, 2017Publication date: December 7, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shu NAKAYAMA, Isao YONEYAMA, Tomohiro USAMI, Yasuharu TERADA
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Patent number: 9815376Abstract: 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: GrantFiled: December 8, 2015Date of Patent: November 14, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Sunao Horitake, Yasuharu Terada, Hiroshi Nate, Takeaki Suzuki, Michihiro Miyashita, Kazuhito Eshima
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Publication number: 20170264104Abstract: 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: ApplicationFiled: March 8, 2017Publication date: September 14, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Sunao HORITAKE, Hiroshi NATE, Yasuharu TERADA
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Patent number: 9741992Abstract: 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: GrantFiled: February 23, 2015Date of Patent: August 22, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yasuharu Terada, Norio Nishiwaki, Takayoshi Amano
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Patent number: 9525356Abstract: 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: GrantFiled: November 8, 2013Date of Patent: December 20, 2016Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takahiro Hirano, Yasuharu Terada
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Publication number: 20160185240Abstract: 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: ApplicationFiled: December 8, 2015Publication date: June 30, 2016Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Sunao HORITAKE, Yasuharu TERADA, Hiroshi NATE, Takeaki SUZUKI, Michihiro MIYASHITA, Kazuhito ESHIMA
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Patent number: 9270187Abstract: 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: GrantFiled: March 18, 2014Date of Patent: February 23, 2016Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kenichi Takagi, Masanori Ishigaki, Takaji Umeno, Takahiro Hirano, Jun Muto, Yasuharu Terada, Kenichiro Nagashita
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Patent number: 9209701Abstract: 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: GrantFiled: February 21, 2014Date of Patent: December 8, 2015Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kenichi Takagi, Masanori Ishigaki, Takaji Umeno, Kenichiro Nagashita, Takahiro Hirano, Jun Muto, Yasuharu Terada