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).
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Publication number: 20160339776Abstract: A hybrid vehicle is identified as a vehicle including a first drive unit driven by a first energy source, a first reservoir unit 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, a second drive unit driven by a second energy source different from the first energy source, a second reservoir unit 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. The first connection unit is provided at one lateral surface of the vehicle and the second connection unit is provided at the other lateral surface of the vehicle, the one lateral surface and the other lateral surface being arranged in a width direction of the vehicle.Type: ApplicationFiled: August 3, 2016Publication date: November 24, 2016Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Hichirosai OYOBE
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Publication number: 20160264001Abstract: A vehicle control apparatus is provided with an upper controlling device and a lower controlling device. The upper controlling device has: a first determining device configured to determine whether or not the number of revolutions of a three-phase AC motor is less than or equal to a predetermined threshold value and whether or not a stop operation which can stop the vehicle is performed; a second determining device configured to determine that the vehicle is stopped if it is determined that the number of revolutions of the three-phase AC motor is less than or equal to the predetermined threshold value and that the stop operation is performed; and a commanding device configured to output a particular control command for setting the state of a power converter to a particular state if it is determined that the vehicle is stopped. The lower controlling device controls the power converter to be in the particular state after a lapse of a predetermined period from the reception of the particular control command.Type: ApplicationFiled: October 31, 2014Publication date: September 15, 2016Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shintaro TSUJII, Yoshitaka NIIMI, Masaki OKAMURA, Wanleng ANG, Hideaki YAGUCHI, Keisuke MORISAKI, Hichirosai OYOBE
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Patent number: 9421868Abstract: A power transfer system transfers electric power from a power feeding device external to a vehicle to a power receiving device mounted on the vehicle in a contactless manner. The power feeding device includes a first reflective wall formed at a rear side of a transmitting coil with respect to a power transferring direction from the transmitting coil, to allow reflection of a magnetic flux output from the transmitting coil in the power transferring direction. The transmitting coil and the first reflective wall are arranged spaced apart from each other. The power receiving device includes a second reflective wall formed at a rear side of a receiving coil with respect to a power receiving direction from the transmitting coil, to allow reflection of a magnetic flux output from the transmitting coil to the receiving coil. The receiving coil and the second reflective wall are arranged spaced apart from each other.Type: GrantFiled: April 10, 2015Date of Patent: August 23, 2016Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hichirosai Oyobe, Tetsuhiro Ishikawa
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Publication number: 20160164289Abstract: An electric-power supply system includes a plurality of vehicles each configured to supply AC electric power to an electric load external to the vehicles, and a switching apparatus provided between the electric load and the plurality of vehicles and that electrically connects one of the vehicles to the electric load. Each of the vehicles includes an internal combustion engine, an electric-power generation device that generates the AC electric power to be supplied to the electric load using output of the internal combustion engine, and a controller controlling the electric-power generation device, when power supply to the electric load is switched by the switching apparatus from one of the vehicles to the vehicle having the controller, to generate the AC electric power in synchronization with a phase of AC voltage which has been output from the one of the vehicles that previously supplied the AC electric power.Type: ApplicationFiled: February 12, 2016Publication date: June 9, 2016Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hichirosai OYOBE, Tetsuhiro ISHIKAWA, Yukihiro MINEZAWA, Hitoshi SATO
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Patent number: 9302668Abstract: A control device of the invention is applied for a hybrid vehicle comprising an internal combustion engine, a motor and a rotational position detector to detect a rotational position of a rotary shaft of the motor. The control device performs a procedure for obtaining an offset amount according to a request for obtaining the offset amount, which offset amount is a difference between a detected rotational position of the rotary shaft with the rotational position detector and an actual rotational position of the rotary shaft. The control device is configured to perform the procedure for obtaining the offset amount while the engine is running, when the vehicle stops and the control device determines that there is the request for obtaining the offset amount.Type: GrantFiled: April 11, 2012Date of Patent: April 5, 2016Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hichirosai Oyobe, Kenji Yamada
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Patent number: 9236736Abstract: A power supply system that supplies electric power to a load includes a first power storage device, a second power storage device, a power line for transmitting electric power input and output to and from the load, a converter for executing bidirectional DC voltage conversion between the first power storage device and the power line, and a switch connected between the second power storage device and the power line. When the switch is OFF, the control device performs voltage control of the converter so that a voltage value of the power line becomes a voltage command value, and when the switch is ON, the control device performs current control of the converter so that a current value of the first power storage device becomes a current command value.Type: GrantFiled: September 27, 2011Date of Patent: January 12, 2016Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hichirosai Oyobe, Makoto Nakamura, Munehiro Kamiya
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Patent number: 9193267Abstract: A control device is applied to a vehicle having a motor with a rotary shaft connected to a drive shaft of the vehicle, a rotational position detector to detect a rotational position of the rotary shaft of the motor, and a battery. The control device performs a procedure for obtaining an offset amount in response to a request for obtaining the offset amount, store the obtained offset amount, and keep the stored offset amount without relying on electric power supplied from the battery, which offset amount is a difference between a detected rotational position of the rotary shaft with the rotational position detector and an actual rotational position of the rotary shaft. The control device is configured to find an occurrence of the request for obtaining the offset amount when battery is dismounted from the vehicle.Type: GrantFiled: March 22, 2012Date of Patent: November 24, 2015Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hichirosai Oyobe, Kenji Yamada
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Patent number: 9180779Abstract: 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: GrantFiled: January 25, 2011Date of Patent: November 10, 2015Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hichirosai Oyobe, Tetsuhiro Ishikawa
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Patent number: 9184681Abstract: A vehicle, including a motor having a rotor, a resolver that detects a rotation angle of the rotor and a control device, and a control method for the vehicle are provided. The control device executes rectangular-wave control over the motor using the rotation angle of the rotor, detected by the resolver, executes zero learning for learning a deviation between an origin of an actual rotation angle of the rotor and an origin of the detected rotation angle of the rotor, corrects the detected rotation angle of the rotor on the basis of a result of the zero learning, and, when the zero learning has not been completed yet, executes avoidance control for avoiding a rapid variation in output of the motor.Type: GrantFiled: August 12, 2013Date of Patent: November 10, 2015Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hichirosai Oyobe, Tetsutaka Yamamoto, Hiroyuki Oyanagi
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Publication number: 20150251546Abstract: A power transfer system transfers electric power from a power feeding device external to a vehicle to a power receiving device mounted on the vehicle in a contactless manner. The power feeding device includes a first reflective wall formed at a rear side of a transmitting coil with respect to a power transferring direction from the transmitting coil, to allow reflection of a magnetic flux output from the transmitting coil in the power transferring direction. The transmitting coil and the first reflective wall are arranged spaced apart from each other. The power receiving device includes a second reflective wall formed at a rear side of a receiving coil with respect to a power receiving direction from the transmitting coil, to allow reflection of a magnetic flux output from the transmitting coil to the receiving coil. The receiving coil and the second reflective wall are arranged spaced apart from each other.Type: ApplicationFiled: April 10, 2015Publication date: September 10, 2015Inventors: Hichirosai OYOBE, Tetsuhiro ISHIKAWA
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Publication number: 20150210170Abstract: A power receiving device mounted on an electrical powered vehicle includes a receiving coil and a reflective wall. The receiving coil is configured to be magnetically coupled with a transmitting coil external to the vehicle by a magnetic field, and to receive electric power from the transmitting coil. The reflective wall is formed at a rear side of the receiving coil with respect to a power receiving direction from the transmitting coil, to allow reflection of a magnetic flux output from the transmitting coil to the receiving coil. The receiving coil and the reflective wall are arranged spaced apart from each other.Type: ApplicationFiled: April 10, 2015Publication date: July 30, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hichirosai OYOBE, Tetsuhiro ISHIKAWA
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Rotor position estimating device, electric motor control system and rotor position estimating method
Patent number: 9077275Abstract: A rotor position estimating device includes a voltage application unit, a current detecting unit and an estimating unit. The voltage application unit is configured to apply a d-axis voltage to an electric motor including a salient-pole rotor during a stop of the electric motor. The current detecting unit is configured to detect a q-axis current flowing through the electric motor at the time when the d-axis voltage is applied. The estimating unit is configured to estimate a rotor position during a stop of the electric motor on the basis of the q-axis current detected by the current detecting unit. The voltage application unit is configured to set a voltage application time in correspondence with peak timing at which the q-axis current reaches a peak in a transitional response characteristic of the q-axis current at the time when the d-axis voltage is applied.Type: GrantFiled: August 6, 2013Date of Patent: July 7, 2015Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hichirosai Oyobe, Takuya Nishimoto, Hiroyuki Oyanagi -
Publication number: 20150151639Abstract: A control device is applied to a vehicle having a motor with a rotary shaft connected to a drive shaft of the vehicle, a rotational position detector to detect a rotational position of the rotary shaft of the motor, and a battery. The control device performs a procedure for obtaining an offset amount in response to a request for obtaining the offset amount, store the obtained offset amount, and keep the stored offset amount without relying on electric power supplied from the battery, which offset amount is a difference between a detected rotational position of the rotary shaft with the rotational position detector and an actual rotational position of the rotary shaft. The control device is configured to find an occurrence of the request for obtaining the offset amount when battery is dismounted from the vehicle.Type: ApplicationFiled: March 22, 2012Publication date: June 4, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hichirosai Oyobe, Kenji Yamada
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Patent number: 9024575Abstract: 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: GrantFiled: October 18, 2011Date of Patent: May 5, 2015Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hichirosai Oyobe, Tetsuhiro Ishikawa
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Publication number: 20150120113Abstract: A control device of the invention is applied for a hybrid vehicle comprising an internal combustion engine, a motor and a rotational position detector to detect a rotational position of a rotary shaft of the motor. The control device performs a procedure for obtaining an offset amount according to a request for obtaining the offset amount, which offset amount is a difference between a detected rotational position of the rotary shaft with the rotational position detector and an actual rotational position of the rotary shaft. The control device is configured to perform the procedure for obtaining the offset amount while the engine is running, when the vehicle stops and the control device determines that there is the request for obtaining the offset amount.Type: ApplicationFiled: April 11, 2012Publication date: April 30, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hichirosai Oyobe, Kenji Yamada
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Publication number: 20140330468Abstract: A vehicle is capable of supplying electric power to an electric load external to the vehicle. The vehicle includes an electric-power generation device generating the electric power, a first connection terminal for electrically connecting the vehicle to another first vehicle to output the electric power generated by the electric-power generation device via the other first vehicle to the electric load, a second connection terminal for connecting another second vehicle to the vehicle to electrically connect the other second vehicle with the vehicle in parallel with respect to the electric load, and a system controller operating the electric-power generation device based on an electric power command received from the other first vehicle.Type: ApplicationFiled: July 17, 2014Publication date: November 6, 2014Inventors: Hichirosai OYOBE, Tetsuhiro ISHIKAWA, Yukihiro MINEZAWA, Hitoshi SATO
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Publication number: 20140225430Abstract: A power supply system that supplies electric power to a load includes a first power storage device, a second power storage device, a power line for transmitting electric power input and output to and from the load, a converter for executing bidirectional DC voltage conversion between the first power storage device and the power line, and a switch connected between the second power storage device and the power line. When the switch is OFF, the control device performs voltage control of the converter so that a voltage value of the power line becomes a voltage command value, and when the switch is ON, the control device performs current control of the converter so that a current value of the first power storage device becomes a current command value.Type: ApplicationFiled: September 27, 2011Publication date: August 14, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hichirosai Oyobe, Makoto Nakamura, Munehiro Kamiya
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Patent number: 8786238Abstract: A MG drive computer switches off system relays when a collision or a possibility of collision is detected. The computer also executes the revolution speed reduction control for reducing the revolution speed of a rotating electric machine and the discharge control for discharging a smoothing capacitor. In the revolution speed reduction control, the second control for switching on switching elements of three phases of an upper arm or lower arm of an inverter and switching off all other switching elements is performed when the revolution speed of the rotating electric machine is equal to or less than a second threshold. When the revolution speed is higher than the second threshold, the first control for switching on a switching element of one phase of the upper arm or lower arm and switching off other switching elements is performed.Type: GrantFiled: July 25, 2012Date of Patent: July 22, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hichirosai Oyobe, Shinjiro Ashida
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ROTOR POSITION ESTIMATING DEVICE, ELECTRIC MOTOR CONTROL SYSTEM AND ROTOR POSITION ESTIMATING METHOD
Publication number: 20140062353Abstract: A rotor position estimating device includes a voltage application unit, a current detecting unit and an estimating unit. The voltage application unit is configured to apply a d-axis voltage to an electric motor including a salient-pole rotor during a stop of the electric motor. The current detecting unit is configured to detect a q-axis current flowing through the electric motor at the time when the d-axis voltage is applied. The estimating unit is configured to estimate a rotor position during a stop of the electric motor on the basis of the q-axis current detected by the current detecting unit. The voltage application unit is configured to set a voltage application time in correspondence with peak timing at which the q-axis current reaches a peak in a transitional response characteristic of the q-axis current at the time when the d-axis voltage is applied.Type: ApplicationFiled: August 6, 2013Publication date: March 6, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hichirosai OYOBE, Takuya NISHIMOTO, Hiroyuki OYANAGI -
Publication number: 20140062359Abstract: A vehicle, including a motor having a rotor, a resolver that detects a rotation angle of the rotor and a control device, and a control method for the vehicle are provided. The control device executes rectangular-wave control over the motor using the rotation angle of the rotor, detected by the resolver, executes zero learning for learning a deviation between an origin of an actual rotation angle of the rotor and an origin of the detected rotation angle of the rotor, corrects the detected rotation angle of the rotor on the basis of a result of the zero learning, and, when the zero learning has not been completed yet, executes avoidance control for avoiding a rapid variation in output of the motor.Type: ApplicationFiled: August 12, 2013Publication date: March 6, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hichirosai OYOBE, Tetsutaka YAMAMOTO, Hiroyuki OYANAGI