Patents by Inventor Hichirosai Oyobe

Hichirosai Oyobe 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: 7898103
    Abstract: A power supply apparatus for a vehicle includes first and second batteries, a power supply line, first and second boost converters, a system main relay, a capacitor, and a control device controlling the first and second boost converters and a connecting portion. Upon receiving a startup instruction IGON, the control device controls the first boost converter such that a feeding node capacitor is charged from the first battery, and controls the second boost converter such that the capacitor is charged from the power supply line. After the charging of the capacitor is completed, the control device switches the system main relay from a disconnected state to a connected state.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: March 1, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hichirosai Oyobe, Wanleng Ang, Hiroshi Yoshida, Hiroki Sawada
  • Patent number: 7891451
    Abstract: An ECU detects an effective value and phase of a voltage from a commercial power supply, based on a voltage from a voltage sensor. Further, ECU generates a command current, which is a command value of current caused to flow through power lines and in-phase with the voltage of the commercial power supply, based on the detected effective value and the phase and on a charge/discharge power command value for a power storage device. Then, ECU controls zero-phase voltage of inverters based on the generated command current.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: February 22, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hichirosai Oyobe, Tetsuhiro Ishikawa, Yoshitoshi Watanabe, Katsuhiro Asano
  • Patent number: 7859201
    Abstract: When it is determined that an electric storage is to be charged from a commercial power source, a controller sets a control target of a voltage of a power line to be controlled by a boost converter, based on a voltage of the commercial power source. Specifically, the controller sets the control target of the voltage to a level approximately equal to the crest value of voltage. Then, the controller outputs an input permission command to a relay circuit, and controls inverters to execute charging of the electric storage.
    Type: Grant
    Filed: September 20, 2006
    Date of Patent: December 28, 2010
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hichirosai Oyobe, Makoto Nakamura, Tetsuhiro Ishikawa, Hiroshi Yoshida
  • Patent number: 7855901
    Abstract: An AC command voltage obtained by compensating a reference value of a commercial AC voltage output from a multiplication unit using an FB control unit is multiplied by k (0?k?1) by a multiplication unit and output to a first inverter control unit, and the remaining part is output to a second inverter control unit. The first and second inverter control units generate signals, based on command voltages obtained by superposing the AC command voltage from an AC output control unit on respective phase command voltages.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: December 21, 2010
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hichirosai Oyobe, Makoto Nakamura, Tetsuhiro Ishikawa, Shigenori Togashi
  • Patent number: 7847495
    Abstract: A hybrid automobile, wherein a second power source operated with less frequency can be forcibly operated. The hybrid automobile comprises a storage battery as a first power source. The hybrid automobile further comprises an engine and a motor generator or a fuel cell as the second power source. When the hybrid automobile is run by the first power source, a driver can change over an operation mode to a running by the second power source by operating an input device. The hybrid automobile further comprises a notification means for prompting the driver to operate the input device when the non-operating time of the second power source exceeds a predetermined time or longer.
    Type: Grant
    Filed: August 30, 2006
    Date of Patent: December 7, 2010
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hichirosai Oyobe, Makoto Nakamura
  • Patent number: 7839013
    Abstract: A power supply device for a vehicle includes a battery (B1) which serves as a first power storage device, a battery (B2) which serves as a second power storage device, a vehicle load, a selection switch (RY0) which selects one of the first and second power storage devices and connects the selected power storage device to the vehicle load, and a control device (60) which, when a current flowing through the selection switch (RY0) is larger than a prescribed value, controls the vehicle load so that the current flowing through the selection switch (RY0) is made smaller than the prescribed value, and switches the selection switch. Preferably, when the control device (60) switches the selection switch (RY0), the control device controls inverters (20, 30) to achieve a balance between electric power generated in a first motor generator (MG2) and electric power consumed in a second motor generator (MG1).
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: November 23, 2010
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Makoto Nakamura, Hichirosai Oyobe, Tsuyoshi Yano
  • Patent number: 7832507
    Abstract: During the communication with a house through an electric power line, a control device determines whether an engine is operating or not. If it is determined that the engine is operating, the control device stops the engine and a motor generator to stop the electric power generation by the motor generator using the output of the engine.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: November 16, 2010
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Makoto Nakamura, Hichirosai Oyobe, Tetsuhiro Ishikawa
  • Patent number: 7819213
    Abstract: A power output apparatus generates a commercial AC voltage across neutral points of first and second motor generators. The power output apparatus includes a leakage detecting device, and upon detection of leakage by the leakage detecting device, causes an AC output cutoff circuit to operate and also shuts down one or both of the first and second motor generators according to the operational states at the time. Further, the leakage detecting device performs checking of the leakage detecting function in response to a test signal from a control device, before outputting the commercial AC voltage.
    Type: Grant
    Filed: September 26, 2005
    Date of Patent: October 26, 2010
    Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin AW Co., Ltd.
    Inventors: Hichirosai Oyobe, Tetsuhiro Ishikawa, Yukihiro Minezawa
  • Patent number: 7800347
    Abstract: A control apparatus of a DC-DC converter includes a reactor and a switching element, repeats an accumulation and a discharge of energy of the reactor by a switching operation of the switching element, and converts a direct-current input voltage to acquire a direct-current output voltage. The control apparatus includes: a current value acquiring unit that acquires current values of the reactor in a current rising section and a current descending section of a current waveform of the reactor at a time interval of a half of a switching period of the switching element; and a center value estimating unit that estimates a center value of a current of the reactor based on the current values acquired in the current rising section and the current descending section.
    Type: Grant
    Filed: July 13, 2009
    Date of Patent: September 21, 2010
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shintaro Tsujii, Hichirosai Oyobe, Kenji Yamada
  • Publication number: 20100225271
    Abstract: An electrical powered vehicle includes a secondary self-resonant coil, a secondary coil, a rectifier, and a power storage device. The secondary self-resonant coil is configured to be magnetically coupled with a primary self-resonant coil of a power feeding device by magnetic field resonance, and allow reception of high frequency power from the primary self-resonant coil. The secondary coil is configured to allow reception of electric power from the secondary self-resonant coil by electromagnetic induction. The rectifier rectifies the electric power received by the secondary coil. The power storage device stores the electric power rectified by the rectifier.
    Type: Application
    Filed: September 25, 2008
    Publication date: September 9, 2010
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hichirosai Oyobe, Tetsuhiro Ishikawa
  • Publication number: 20100207587
    Abstract: When the relation of battery temperature Tb1>battery temperature Tb2 is satisfied, a temperature increase request for a power storage unit becomes relatively large. Therefore, a target power value P2* for the power storage unit is determined with priority. The target power value P2* is calculated by multiplying the required power value Ps* by a distribution ratio Pr2 (0.5?distribution ratio Pr2?1.0) determined in accordance with temperature deviation between battery temperature Tb1 and battery temperature Tb2. The target power value P1* is determined by subtracting the target power value P2* from the required power value Ps*.
    Type: Application
    Filed: December 11, 2007
    Publication date: August 19, 2010
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hichirosai Oyobe, Shinji Ichikawa, Eiji Sato
  • Patent number: 7764051
    Abstract: A power output apparatus includes first and second motor generators, first and second inverters and a relay circuit. The first and second motor generators include first and second 3-phase coils, respectively. The first inverter alters periodically the potential at a first neutral point of the 3-phase coil. The second inverter alters periodically the potential of the second neutral point of the second 3-phase coil at phase corresponding to a phase-inverted version of the potential change of the first neutral point. The relay circuit responds to a control signal from the control device to electrically connect first and second AC lines to a connector, and provides an alternating voltage generated across the first and second neutral points to the connector.
    Type: Grant
    Filed: November 28, 2005
    Date of Patent: July 27, 2010
    Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin AW Co., Ltd.
    Inventors: Tetsuhiro Ishikawa, Hichirosai Oyobe, Yukihiro Minezawa
  • Patent number: 7755306
    Abstract: A load on a vehicle is connected to first and second neutral points in first and second motor generators through a relay circuit and power output lines. A control device controls inverters depending on a requested voltage of the load on a vehicle such that a potential at the first neutral point becomes higher than a potential at the second neutral point by that requested voltage.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: July 13, 2010
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hichirosai Oyobe, Shoichi Sasaki, Makoto Nakamura, Tetsuhiro Ishikawa
  • Publication number: 20100164278
    Abstract: A power supply apparatus for a vehicle includes first and second batteries, a power supply line, first and second boost converters, a system main relay, a capacitor, and a control device controlling the first and second boost converters and a connecting portion. Upon receiving a startup instruction IGON, the control device controls the first boost converter such that a feeding node capacitor is charged from the first battery, and controls the second boost converter such that the capacitor is charged from the power supply line. After the charging of the capacitor is completed, the control device switches the system main relay from a disconnected state to a connected state.
    Type: Application
    Filed: May 30, 2007
    Publication date: July 1, 2010
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hichirosai Oyobe, Wanleng Ang, Hiroshi Yoshida, Hiroki Sawada
  • Publication number: 20100132388
    Abstract: An air conditioning control device for a vehicle has an air conditioner for conditioning air in a vehicle interior, an input receiving unit for receiving inputs of both planned departure time of the vehicle and a target temperature in the vehicle interior, a pre-air-conditioning control unit for starting operation of the air conditioner at an air conditioning start time before the planned departure time so that the temperature in the vehicle interior at the planned departure time becomes the target temperature, and an outdoor air temperature acquisition unit for acquiring outdoor air temperature. The pre-air-conditioning control unit changes the air conditioning operation start time based on the outdoor air temperature acquired by the outdoor air temperature acquisition unit.
    Type: Application
    Filed: May 20, 2008
    Publication date: June 3, 2010
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hichirosai Oyobe, Yoshinori Fujitake
  • Publication number: 20100094497
    Abstract: In an electrical powered vehicle including a control device for generating an input/output power command value for a power storage device and a control device for controlling a power conversion device and a rotating electric machine, provided separately, when there is a sudden change in the rotational speed of a rotating electric machine, the input/output power command value of a power storage device intrinsically set by an HV-ECU is corrected corresponding to the change in the rotational speed of the rotating electric machine by a control device MG-ECU detecting the rotational speed of the rotating electric machine, without having to wait for modification of the input/output power command value from the HV-ECU.
    Type: Application
    Filed: October 5, 2009
    Publication date: April 15, 2010
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hichirosai Oyobe, Makoto Nakamura, Masaya Yamamoto, Hideaki Saida, Satoru Katoh, Hiroaki Kato, Yoshinori Tomita, Haruki Sato
  • Patent number: 7688604
    Abstract: A first inverter control unit includes a harmonic generation unit. The harmonic generation unit generates a harmonic voltage instruction having a phase opposite to a harmonic generated at a neutral point of a motor-generator when the motor-generator revolves, based on motor revolution number of the motor-generator. A PWM signal generation unit generates a signal based on a voltage instruction obtained by superimposing an AC voltage instruction from an AC output control unit and the harmonic voltage instruction from the harmonic generation unit onto each voltage instruction of U-phase, V-phase and W-phase from a conversion unit.
    Type: Grant
    Filed: June 22, 2006
    Date of Patent: March 30, 2010
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hichirosai Oyobe, Tetsuhiro Ishikawa, Yukihiro Minezawa, Shigenori Togashi
  • Publication number: 20100027305
    Abstract: Power lines are connected to neutral points of motor generators, respectively, and an electric power is transmitted and received between a vehicle and a load outside the vehicle via the power lines. In this transmission, an ECU simultaneously PWM-controls all phases of one of inverters, and controls the other inverter to keep continuously the conducting state.
    Type: Application
    Filed: December 18, 2007
    Publication date: February 4, 2010
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, NIPPON SOKEN, INC.
    Inventors: Hichirosai Oyobe, Yoshinori Fujitake, Toru Wakimoto
  • Publication number: 20100025127
    Abstract: A hybrid vehicle is identified as a vehicle including a first drive unit (4) driven by a first energy source, a first reservoir unit (201 ) reserving the first energy source, a first connection unit allowing a first energy source supply unit to be connected thereto and guiding the first energy source supplied from the first energy source supply unit to the first reservoir unit (201), a second drive unit (MG1, MG2) driven by a second energy source different from the first energy source, a second reservoir unit (B) reserving the second energy source, and a second connection unit allowing a second energy source supply unit to be connected thereto and guiding the second energy source supplied from the second energy source supply unit to the second reservoir unit.
    Type: Application
    Filed: March 4, 2008
    Publication date: February 4, 2010
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hichirosai Oyobe
  • Publication number: 20100026237
    Abstract: In charging first and second power storage devices from a charging station, an inverter ECU controls first and second inverters to convert AC power received at first and second neutral points into DC power and output the DC power to a power supply system. A converter ECU converts in voltage the electric power received from the first and second inverters to be charged and outputs the converted electric power to the first and second power storage devices, and for low temperature, controls first and second converters, to allow the first and second power storage devices to communicate electric power therebetween.
    Type: Application
    Filed: November 7, 2007
    Publication date: February 4, 2010
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shinji Ichikawa, Hichirosai Oyobe, Naoto Suzuki, Tetsuhiro Ishikawa