Patents by Inventor Kazuya Oyama

Kazuya Oyama 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: 11318848
    Abstract: A power supply system includes a first drive motor, a second drive motor, a first power line to which a first inverter and a first battery are connected, a second power line to which a second inverter and a second battery are connected, a voltage converter that converts a voltage between the first power line and the second power line, and an ECU that operates the first and second inverters and the voltage converter and controls charging and discharging of the first and second batteries. In a case where total required power is larger than first outputtable power of the first battery, the ECU discharges a shortage of power from the second battery to the second power line, wherein the shortage of power is obtained by excluding an amount that is output by the first battery from the total required power.
    Type: Grant
    Filed: April 26, 2021
    Date of Patent: May 3, 2022
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kazuya Oyama, Yuto Otsuki, Hirokazu Oguma
  • Patent number: 11260771
    Abstract: A vehicle power supply system is provided. The system includes a first power line connected by a first inverter and a first battery, a second power line connected by a second inverter and a second battery, a voltage converter, and a charging and discharging control device operating the inverters and the voltage converter. The control device charges the second battery with second regenerative electric power that is power supplied from the second inverter to the second power line in a case where a second SOC is equal to or less than the second regeneration permission upper limit during regenerative deceleration, and prohibits the second battery from being charged and supplies at least a portion of the second regenerative electric power to the first battery through the voltage converter and the first power line when the second SOC is larger than the second regeneration permission upper limit.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: March 1, 2022
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kazuya Oyama, Yuto Otsuki, Hirokazu Oguma
  • Patent number: 11203272
    Abstract: A vehicle power supply system includes two drive motors, a first power line to which a first inverter and a first battery are connected, a second power line to which a second inverter and a second battery are connected, a voltage converter that converts a voltage between these power lines, and a charging and discharging control device that controls charging and discharging of the batteries by operating the inverters and the voltage converter. In a case where a second SOC is equal to or greater than a second normal upper limit, the charging and discharging control device discharges power from the second battery to the second power line, and discharges a shortage of power from the first battery through the voltage converter to the second power line, wherein the shortage of power is obtained by excluding power discharged by the second battery from power required in the second power line.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: December 21, 2021
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kazuya Oyama, Hirokazu Oguma
  • Patent number: 11167660
    Abstract: A vehicle power supply system is provided. The vehicle power supply system includes a first power line to which a first inverter and a first battery are connected, a second power line to which a second inverter and a second battery are connected, a voltage converter, a charging and discharging control device that operates the inverters and the voltage converter, and a second regeneration permission upper limit setting unit that sets a threshold for a second SOC of the second battery. The charging and discharging control device prohibits the second battery from being charged in a case where the second SOC is larger than the threshold during regenerative deceleration, and the second regeneration permission upper limit setting unit changes the threshold to a second regeneration permission upper limit or a second normal upper limit on the basis of a state of the first battery.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: November 9, 2021
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kazuya Oyama, Hirokazu Oguma
  • Publication number: 20210245608
    Abstract: A power supply system includes a first drive motor, a second drive motor, a first power line to which a first inverter and a first battery are connected, a second power line to which a second inverter and a second battery are connected, a voltage converter that converts a voltage between the first power line and the second power line, and an ECU that operates the first and second inverters and the voltage converter and controls charging and discharging of the first and second batteries. In a case where total required power is larger than first outputtable power of the first battery, the ECU discharges a shortage of power from the second battery to the second power line, wherein the shortage of power is obtained by excluding an amount that is output by the first battery from the total required power.
    Type: Application
    Filed: April 26, 2021
    Publication date: August 12, 2021
    Applicant: Honda Motor Co., Ltd.
    Inventors: Kazuya OYAMA, Yuto OTSUKI, Hirokazu OGUMA
  • Patent number: 11021077
    Abstract: A vehicle power supply system includes a first drive motor, a second drive motor, a first power line to which a first inverter and a first battery are connected, a second power line to which a second inverter and a second battery are connected, a voltage converter that convert a voltage between the power lines, and a charging and discharging control device that controls charging and discharging of the batteries and by operating the inverters and and the voltage converter. A vehicle is able to travel in a drive mode of any of an all-wheel drive mode and a two-wheel drive mode. The charging and discharging control device drives the first drive motor with power that is discharged from the first battery in a case where the drive mode is the two-wheel drive mode.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: June 1, 2021
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kazuya Oyama, Hirokazu Oguma
  • Patent number: 11007883
    Abstract: A power supply system includes a first drive motor, a second drive motor, a first power line to which a first inverter and a first battery are connected, a second power line to which a second inverter and a second battery are connected, a voltage converter that converts a voltage between the first power line and the second power line, and an ECU that operates the first and second inverters and the voltage converter and controls charging and discharging of the first and second batteries. In a case where total required power is larger than first outputtable power of the first battery, the ECU discharges a shortage of power from the second battery to the second power line, wherein the shortage of power is obtained by excluding an amount that is output by the first battery from the total required power.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: May 18, 2021
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kazuya Oyama, Yuto Otsuki, Hirokazu Oguma
  • Patent number: 10960768
    Abstract: A vehicle power supply system includes a first power line to which a first inverter and a first battery are connected, a second power line to which a second inverter and a second battery are connected, a voltage converter, a charging and discharging control device that operates the inverters and the voltage converter, and a second regenerable electric power acquisition unit that acquires second regenerable electric power. The charging and discharging control device charges the second battery with second regenerative electric power that is power supplied from the second inverter to the second power line during regenerative deceleration, and supplies second surplus regenerative electric power to the first power line in a case where the second regenerative electric power is larger than the second regenerable electric power, wherein the second surplus regenerative electric power is obtained by excluding the second regenerable electric power from the second regenerative electric power.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: March 30, 2021
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kazuya Oyama, Yuto Otsuki, Hirokazu Oguma
  • Patent number: 10889202
    Abstract: A vehicle power supply system is provided. The vehicle power supply system includes a first power line connected by a first inverter and a first battery, a second power line connected by a second inverter and a second battery, a voltage converter converting a voltage between the power lines, a charging and discharging control device that controls charging and discharging of the batteries by operating the inverters and the voltage converter, and a permission unit that permits or prohibits execution of the electrical pass control for charging the second battery with power discharged from the first battery. The charging and discharging control device executes the electrical pass control when a second SOC is equal to or less than a predetermined value and the electrical pass control is permitted by the permission unit. The permission unit does not permit the execution of the electrical pass control during regenerative deceleration.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: January 12, 2021
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kazuya Oyama, Hirokazu Oguma
  • Publication number: 20190299798
    Abstract: A power supply system includes a first drive motor, a second drive motor, a first power line to which a first inverter and a first battery are connected, a second power line to which a second inverter and a second battery are connected, a voltage converter that converts a voltage between the first power line and the second power line, and an ECU that operates the first and second inverters and and the voltage converter and controls charging and discharging of the first and second batteries. In a case where total required power is larger than first outputtable power of the first battery, the ECU discharges a shortage of power from the second battery to the second power line, wherein the shortage of power is obtained by excluding an amount that is output by the first battery from the total required power.
    Type: Application
    Filed: March 28, 2019
    Publication date: October 3, 2019
    Applicant: Honda Motor Co.,Ltd.
    Inventors: Kazuya OYAMA, Yuto OTSUKI, Hirokazu OGUMA
  • Publication number: 20190299809
    Abstract: A vehicle power supply system is provided. The vehicle power supply system includes a first power line connected by a first inverter and a first battery, a second power line connected by a second inverter and a second battery, a voltage converter converting a voltage between the power lines, a charging and discharging control device that controls charging and discharging of the batteries by operating the inverters and the voltage converter, and a permission unit that permits or prohibits execution of the electrical pass control for charging the second battery with power discharged from the first battery. The charging and discharging control device executes the electrical pass control when a second SOC is equal to or less than a predetermined value and the electrical pass control is permitted by the permission unit. The permission unit does not permit the execution of the electrical pass control during regenerative deceleration.
    Type: Application
    Filed: March 29, 2019
    Publication date: October 3, 2019
    Applicant: Honda Motor Co.,Ltd.
    Inventors: Kazuya OYAMA, Hirokazu OGUMA
  • Publication number: 20190299788
    Abstract: A vehicle power supply system includes a first power line to which a first inverter and a first battery are connected, a second power line to which a second inverter and a second battery are connected, a voltage converter, a charging and discharging control device that operates the inverters and the voltage converter, and a second regenerable electric power acquisition unit that acquires second regenerable electric power. The charging and discharging control device charges the second battery with second regenerative electric power that is power supplied from the second inverter to the second power line during regenerative deceleration, and supplies second surplus regenerative electric power to the first power line in a case where the second regenerative electric power is larger than the second regenerable electric power, wherein the second surplus regenerative electric power is obtained by excluding the second regenerable electric power from the second regenerative electric power.
    Type: Application
    Filed: March 29, 2019
    Publication date: October 3, 2019
    Applicant: Honda Motor Co.,Ltd.
    Inventors: Kazuya OYAMA, Yuto OTSUKI, Hirokazu OGUMA
  • Publication number: 20190299806
    Abstract: A vehicle power supply system is provided. The vehicle power supply system includes a first power line to which a first inverter and a first battery are connected, a second power line to which a second inverter and a second battery are connected, a voltage converter, a charging and discharging control device that operates the inverters and the voltage converter, and a second regeneration permission upper limit setting unit that sets a threshold for a second SOC of the second battery. The charging and discharging control device prohibits the second battery from being charged in a case where the second SOC is larger than the threshold during regenerative deceleration, and the second regeneration permission upper limit setting unit changes the threshold to a second regeneration permission upper limit or a second normal upper limit on the basis of a state of the first battery.
    Type: Application
    Filed: March 28, 2019
    Publication date: October 3, 2019
    Applicant: Honda Motor Co.,Ltd.
    Inventors: Kazuya OYAMA, Hirokazu OGUMA
  • Publication number: 20190299796
    Abstract: A vehicle power supply system is provided. The vehicle power supply system includes a first power line connected by a first battery, a second power line to which a second battery is connected, a voltage converter, a charging and discharging control device that controls charging and discharging of the batteries by operating inverters and the voltage converter, and a permission unit that permits or prohibits execution of the electrical pass control for charging the second battery with power discharged from the first battery. The charging and discharging control device executes the electrical pass control when a second SOC is equal to or less than a predetermined value and the electrical pass control is permitted by the permission unit. The permission unit permits the execution of the electrical pass control with the power discharged from the first battery being supplied to a second drive motor through the voltage converter as a condition.
    Type: Application
    Filed: March 29, 2019
    Publication date: October 3, 2019
    Applicant: Honda Motor Co.,Ltd.
    Inventors: Kazuya OYAMA, Yuto OTSUKI, Hirokazu OGUMA
  • Publication number: 20190299804
    Abstract: A vehicle power supply system includes two drive motors, a first power line to which a first inverter and a first battery are connected, a second power line to which a second inverter and a second battery are connected, a voltage converter that converts a voltage between these power lines, and a charging and discharging control device that controls charging and discharging of the batteries by operating the inverters and the voltage converter. In a case where a second SOC is equal to or greater than a second normal upper limit, the charging and discharging control device discharges power from the second battery to the second power line, and discharges a shortage of power from the first battery through the voltage converter to the second power line, wherein the shortage of power is obtained by excluding power discharged by the second battery from power required in the second power line.
    Type: Application
    Filed: March 29, 2019
    Publication date: October 3, 2019
    Applicant: Honda Motor Co.,Ltd.
    Inventors: Kazuya OYAMA, Hirokazu OGUMA
  • Publication number: 20190299807
    Abstract: A vehicle power supply system includes a first drive motor, a second drive motor, a first power line to which a first inverter and a first battery are connected, a second power line to which a second inverter and a second battery are connected, a voltage converter that convert a voltage between the power lines, and a charging and discharging control device that controls charging and discharging of the batteries and by operating the inverters and and the voltage converter. A vehicle is able to travel in a drive mode of any of an all-wheel drive mode and a two-wheel drive mode. The charging and discharging control device drives the first drive motor with power that is discharged from the first battery in a case where the drive mode is the two-wheel drive mode.
    Type: Application
    Filed: March 28, 2019
    Publication date: October 3, 2019
    Applicant: Honda Motor Co.,Ltd.
    Inventors: Kazuya OYAMA, Hirokazu OGUMA
  • Publication number: 20190299808
    Abstract: A vehicle power supply system is provided. The system includes a first power line connected by a first inverter and a first battery, a second power line connected by a second inverter and a second battery, a voltage converter, and a charging and discharging control device operating the inverters and the voltage converter. The control device charges the second battery with second regenerative electric power that is power supplied from the second inverter to the second power line in a case where a second SOC is equal to or less than the second regeneration permission upper limit during regenerative deceleration, and prohibits the second battery from being charged and supplies at least a portion of the second regenerative electric power to the first battery through the voltage converter and the first power line when the second SOC is larger than the second regeneration permission upper limit.
    Type: Application
    Filed: March 29, 2019
    Publication date: October 3, 2019
    Applicant: Honda Motor Co.,Ltd.
    Inventors: Kazuya OYAMA, Yuto OTSUKI, Hirokazu OGUMA
  • Publication number: 20150016088
    Abstract: A lighting device (100) for lighting by emitting lighting light by light emission of an LED element (6), wherein the area of a spectrum of the lighting light having a wavelength of 600 nm to 700 nm is 30% to 70%, and the area having a wavelength of 400 nm to 500 nm is 20% or less with respect to the area having a wavelength of 400 nm to 800 nm, the spectrum of the lighting light has a maximum value between 600 nm and 700 nm, and the value of the spectrum at 550 nm is 50% or less of the maximum value.
    Type: Application
    Filed: February 19, 2013
    Publication date: January 15, 2015
    Inventors: Yukishige Shiraichi, Masaki Ohtsuka, Akihiko Kuriyama, Toshihiro Senoo, Ikuo Tsuzuki, Kazuya Oyama
  • Publication number: 20100277105
    Abstract: A lighting apparatus is configured such that first luminous portions and second luminous portions having different light distribution characteristics are used, and respective luminous intensities of the first luminous portions and the second luminous portions are controlled by a control portion to change the amount of light in the wavelength range inhibiting melatonin secretion which is emitted in a predetermined direction from the first luminous portions and the second luminous portions. As a result, by changing the amount of light emitted in the direction (predetermined direction) toward the eyes of the user in a normal usage mode, the lighting apparatus regulates the amount of the light in the wavelength range inhibiting melatonin secretion which enters the eyes of the user to change the influence on the inhibition of melatonin secretion, and also perform adequate lighting in accordance with time or the lifestyle of the user.
    Type: Application
    Filed: November 27, 2008
    Publication date: November 4, 2010
    Inventor: Kazuya Oyama
  • Patent number: 7623896
    Abstract: When power to be transmitted varies, a control section instructs an AGC control section to control a gain of an IQ modulation processing section 6 in accordance with the power. A switch selects a power source voltage, corresponding to the power to be transmitted, from power source voltages V1 to V3 of a wireless module, in accordance with an instruction of the control section, so as to supply thus selected power source voltage to a power amplifier. Thus, it is possible to realize a wireless communication circuit which occupies a less area and consumes smaller amounts of power without narrowing a communication range.
    Type: Grant
    Filed: September 22, 2004
    Date of Patent: November 24, 2009
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Toshiyuki Tanaka, Shinji Hara, Kazuya Oyama, Manabu Omori