Patents by Inventor Tomoyuki Mizuno

Tomoyuki Mizuno 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: 9647264
    Abstract: A nonaqueous electrolyte secondary battery capable of achieving a high battery performance (e.g., high energy density and high power density) is provided. The nonaqueous electrolyte secondary battery is equipped with a positive electrode having a positive electrode current collector and a positive electrode active material layer that is formed on the positive electrode current collector and includes at least a positive electrode active material and a conductive material. The positive electrode active material includes a lithium-transition metal composite oxide. The conductive material includes a lithium phosphate compound coated, on at least part of the surface thereof, with a conductive carbon, and a proportion of the conductive material in the positive electrode active material layer is 10% by mass or less.
    Type: Grant
    Filed: September 4, 2012
    Date of Patent: May 9, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Tomoyuki Mizuno
  • Patent number: 9466999
    Abstract: A vehicle 10 according to an embodiment of the present invention is applied to a charge-discharge system CDS. The charge-discharge system includes the vehicle 10, an electric power cable 20, a plug-in station 30, a HEMS 40, and a commercial power supply 50. In a state where the connector 21 of the electric power cable 20 is connected with the inlet of the vehicle 10, an electric power is discharged/supplied from the vehicle electric storage device 11 to an external electric load (e.g., external electric storage device 41). Further, the vehicle electric storage device 11 is capable of being charged by the external power supply 50 through the electric power cable 20. A control device 12 of the vehicle 10 obtains/detects a permissible current value of the electric power cable 20, based on a specific signal (control pilot signal) which is transmitted through a CPLT terminal of the connector 21 before it starts the discharge to the external electric load from the vehicle electric storage device 11.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: October 11, 2016
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Daisuke Ishii, Shigeki Kinomura, Tomoyuki Mizuno, Takashi Ogawa, Hiroki Sawada, Yasuo Suzuki
  • Publication number: 20160207402
    Abstract: A power supply system includes a first controller that, controls an MG1 inverter, a second controller that controls an MG2 inverter, and a voltage sensor that detects a voltage generated from a pair of output terminals. The first controller controls the MG1 inverter according to a target value of the voltage generated from the output terminals, irrespective of the magnitude of a deviation between the target value of the voltage generated from the output terminals, and the detected voltage. The second controller controls the MG2 inverter according to the deviation. This processing is implemented by an effective value computing unit, effective value PI control unit, and a neutral point output voltage command unit.
    Type: Application
    Filed: September 22, 2014
    Publication date: July 21, 2016
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, TOYOTA TURBINE AND SYSTEMS INC.
    Inventors: Shingo UEDA, Tomoyuki MIZUNO
  • Patent number: 9387767
    Abstract: A vehicle 10 according to the embodiment of the present invention is applied to a charge-discharge system CDS. The charge-discharge system includes the vehicle 10, an electric power cable 20, a plug-in station 30, a HEMS 40, and a commercial power supply 50. From the HEMS 40 to the vehicle 10, a request for charge to charge an electric storage device 11 and a request for discharge to allow an external electric load to use an electric power of the electric storage device 11 are transmitted. When a request is changed from the request for charge to the request for discharge, or vice versa, the vehicle 10 realizes a charge-discharge stop state in which neither a charging operation nor a discharging operation is performed without directly changing from the charging operation to the discharging operation, or vice versa.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: July 12, 2016
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Daisuke Ishii, Shigeki Kinomura, Tomoyuki Mizuno, Takashi Ogawa, Hiroki Sawada, Yasuo Suzuki
  • Publication number: 20160152154
    Abstract: A vehicle includes: an electrical storage device; an inlet; a power conversion unit; and an ECU configured to: (a) determine whether the connector connected to the inlet is a charge connector for charging the electrical storage device or a discharge connector for feeding electric power to an external device on the basis of a first signal that is supplied via the inlet; (b) determine whether the discharge connector is a power extracting connector for feeding electric power to a single load or a facility connector for feeding electric power to a facility on the basis of a second signal that is supplied via the inlet when the ECU determines that the connector is the discharge connector; and (c) control an exchange of electric power between the inlet and the electrical storage device with the use of the power conversion unit on the basis of the determination of the connector.
    Type: Application
    Filed: June 20, 2014
    Publication date: June 2, 2016
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, TOYOTA TURBINE AND SYSTEMS INC.
    Inventors: Tomoyuki MIZUNO, Yoshiyuki IGARASHI
  • Publication number: 20160156037
    Abstract: A non-aqueous electrolyte secondary battery in which, even when a current collector terminal is welded to a current collector part, separation of the constituent materials and detachment of the mixture layer are effectively suppressed. A method by which the secondary battery can be produced with high productivity and at lower cost. A non-aqueous electrolyte secondary battery having a layered structure in which power-generating components including an electrode are layered. The electrode includes an electrode current collector and an electrode mixture layer provided in a part of the electrode current collector, which includes a current collector part not provided with the electrode mixture layer of the electrode current collector, and the current collector part includes a weld section welded to the current collector part of another electrode current collector adjacent in a layering direction.
    Type: Application
    Filed: June 24, 2014
    Publication date: June 2, 2016
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Tomoyuki MIZUNO
  • Patent number: 9278624
    Abstract: A vehicle is capable of charging a power storage device mounted thereon using electric power from two power paths of an external DC power supply and AC power supply. The vehicle includes a DC charger for converting electric power from the DC power supply into charging electric power for the power storage device, and an AC charger for converting electric power from the AC power supply into charging electric power for the power storage device. A vehicle ECU selects an electric power path to be used for charging based on the state of the power storage device and efficiency of the DC charger and the AC charger.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: March 8, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shigeki Kinomura, Shinji Ichikawa, Tomoyuki Mizuno
  • Patent number: 9242568
    Abstract: A vehicle is capable of charging a power storage device mounted thereon using electric power from two power paths of an external DC power supply and AC power supply. The vehicle includes a DC charger for converting electric power from the DC power supply into charging electric power for the power storage device, and an AC charger for converting electric power from the AC power supply into charging electric power for the power storage device. A vehicle ECU selects an electric power path to be used for charging based on the state of the power storage device and efficiency of the DC charger and the AC charger.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: January 26, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shigeki Kinomura, Shinji Ichikawa, Tomoyuki Mizuno
  • Patent number: 9216655
    Abstract: A vehicle includes a charging unit receiving electric power supplied from an external power supply through a power feeding cable connected to an inlet for charging a power storage device; a discharging unit for supplying electric power from the power storage device to the power feeding cable through the inlet; a discharge relay; and a charge relay. When ending a discharging operation, an ECU outputs an opening instruction to the discharge relay and determines based on the state of a power line during output of the opening instruction whether the discharge relay is welded or not. When starting the discharging operation, the ECU outputs a closing instruction to the discharge relay and does not determine during output of the closing instruction whether the discharge relay is welded or not.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: December 22, 2015
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Daisuke Ishii, Tomoyuki Mizuno
  • Patent number: 9184587
    Abstract: A power feeding device receives power from a vehicle and feeds the received power to a load external to the vehicle. A communication unit communicates between the vehicle and the power feeding device. A power supply unit supplies the communication unit with power. When an external power supply has failed, the power feeding device supplies the power that is received from the vehicle to the power supply unit to activate the communication unit, and the power feeding device also transmits via the communication unit to an ECU a specification regarding power supplied from the external power supply to the load. While the ECU follows a predetermined specification to control the power feeding unit, once the specification regarding power supplied from the external power supply to the load has been received, the ECU follows the received specification, rather than the predetermined specification, to control the power feeding unit.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: November 10, 2015
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Tomoyuki Mizuno
  • Patent number: 9139100
    Abstract: A vehicular power supply apparatus includes a Scott transformer, a first output port and a second output port. The Scott transformer is configured to convert three-phase AC power supplied from a three-phase AC power source into first and second single-phase AC powers. The first output port is for supplying the first single-phase AC power to a vehicle. The second output port is for supplying the second single-phase AC power to a vehicle.
    Type: Grant
    Filed: June 9, 2011
    Date of Patent: September 22, 2015
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shinji Ichikawa, Tomoyuki Mizuno
  • Publication number: 20150239362
    Abstract: A power supply system supplies power from a plurality of vehicles to an external electrical apparatus. When power is supplied, the plurality of vehicles can select one of a generated-power supply mode, in which an engine is driven and a charged-power supply mode in which the engine is not driven. The power supply system includes a control unit that controls power to be supplied from the plurality of vehicles and, when power is supplied to the electrical apparatus, performs control so that the charged-power supply mode is selected for at least one of the plurality of vehicles that are power supply sources.
    Type: Application
    Filed: September 23, 2013
    Publication date: August 27, 2015
    Applicants: TOYOTA TURBINE AND SYSTEMS INC., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Tomoyuki Mizuno
  • Publication number: 20150244032
    Abstract: A manufacturing method according to the present invention is a method for manufacturing a nonaqueous electrolyte secondary battery including graphite as a negative-electrode active material. The manufacturing method includes: a step of assembling the battery including a positive electrode and a negative electrode; and a step of performing an initial charging process of performing first charging on the battery. In the initial charging process, charging is performed at a relatively large first current value when a gas generation amount caused in the battery during the charging does not depend on a charging current value, and the charging is performed at a second current value smaller than the first current value when the gas generation amount depends on the charging current value.
    Type: Application
    Filed: February 20, 2015
    Publication date: August 27, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kunimitsu YAMAMOTO, Yukiyoshi UENO, Tomoyuki MIZUNO, Junko OHIRA
  • Publication number: 20150207134
    Abstract: A secondary battery includes an electrode body. The electrode body includes a positive electrode active material layer. The positive electrode active material layer includes a plurality of hollow positive electrode active material particles, a plurality of void supporting particles, and a plurality of conductive material particles. The void supporting particles are configured to provide voids having a pore diameter of 0.5 ?m or more in the positive electrode active material layer. The conductive material particles are configured to provide an electrical continuity of the positive electrode active material layer. A ratio of an average particle size of the void supporting particles to an average particle size of the hollow positive electrode active material particles is1/3 or more and 2 or less. The crushing strength of the void supporting particles is larger than the crushing strength of the conductive material particles.
    Type: Application
    Filed: October 11, 2013
    Publication date: July 23, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tomoyuki Mizuno, Yutaka Oyama, Keiichi Takahashi, Akihiro Taniguchi, Hideaki Fujita
  • Publication number: 20150188123
    Abstract: A nonaqueous electrolyte secondary battery capable of achieving a high battery performance (e.g., high energy density and high power density) is provided. The nonaqueous electrolyte secondary battery is equipped with a positive electrode having a positive electrode current collector and a positive electrode active material layer that is formed on the positive electrode current collector and includes at least a positive electrode active material and a conductive material. The positive electrode active material includes a lithium-transition metal composite oxide. The conductive material includes a lithium phosphate compound coated, on at least part of the surface thereof, with a conductive carbon, and a proportion of the conductive material in the positive electrode active material layer is 10% by mass or less.
    Type: Application
    Filed: September 4, 2012
    Publication date: July 2, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Tomoyuki Mizuno
  • Publication number: 20150117898
    Abstract: An image forming apparatus includes a casing having a frame, a drive source configured to generate a driving force, a gear mechanism configured to receive the driving force of the drive source, and a drive source support formed in the frame. The drive source support encloses and supports the drive source. At least an upper portion of the drive source support has a plurality of first openings which are spaced from each other.
    Type: Application
    Filed: October 31, 2014
    Publication date: April 30, 2015
    Inventors: Tomoyuki Mizuno, Tomitake Aratachi, Tomonori Watanabe
  • Publication number: 20150042288
    Abstract: A vehicle 10 according to an embodiment of the present invention is applied to a charge-discharge system CDS. The charge-discharge system includes the vehicle 10, an electric power cable 20, a plug-in station 30, a HEMS 40, and a commercial power supply 50. In a state where the connector 21 of the electric power cable 20 is connected with the inlet of the vehicle 10, an electric power is discharged/supplied from the vehicle electric storage device 11 to an external electric load (e.g., external electric storage device 41). Further, the vehicle electric storage device 11 is capable of being charged by the external power supply 50 through the electric power cable 20. A control device 12 of the vehicle 10 obtains/detects a permissible current value of the electric power cable 20, based on a specific signal (control pilot signal) which is transmitted through a CPLT terminal of the connector 21 before it starts the discharge to the external electric load from the vehicle electric storage device 11.
    Type: Application
    Filed: August 6, 2012
    Publication date: February 12, 2015
    Inventors: Daisuke Ishii, Shigeki Kinomura, Tomoyuki Mizuno, Takashi Ogawa, Hiroki Sawada, Yasuo Suzuki
  • Publication number: 20140327408
    Abstract: A vehicle 10 according to the embodiment of the present invention is applied to a charge-discharge system CDS. The charge-discharge system includes the vehicle 10, an electric power cable 20, a plug-in station 30, a HEMS 40, and a commercial power supply 50. From the HEMS 40 to the vehicle 10, a request for charge to charge an electric storage device 11 and a request for discharge to allow an external electric load to use an electric power of the electric storage device 11 are transmitted. When a request is changed from the request for charge to the request for discharge, or vice versa, the vehicle 10 realizes a charge-discharge stop state in which neither a charging operation nor a discharging operation is performed without directly changing from the charging operation to the discharging operation, or vice versa.
    Type: Application
    Filed: July 31, 2012
    Publication date: November 6, 2014
    Inventors: Daisuke Ishii, Shigeki Kinomura, Tomoyuki Mizuno, Takashi Ogawa, Hiroki Sawada, Yasuo Suzuki
  • Publication number: 20140225441
    Abstract: A power supply system includes a vehicle, and a power feeding device for receiving power from the vehicle and feeding the received power to a load external to the vehicle. The vehicle includes a power generation unit, a power feeding unit for receiving power from the power generation unit and supplying the received power to the power feeding device, a storage unit for storing therein a specification of power supplied from an external power supply to the load, and a control device that controls the power feeding unit to convert power that is received from the power generation unit into power to drive the load, as based on the specification of the supplied power that is stored in the storage unit, once the external power supply has failed.
    Type: Application
    Filed: October 27, 2011
    Publication date: August 14, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tomoyuki Mizuno, Shigeki Kinomura
  • Publication number: 20140225437
    Abstract: A power feeding device receives power from a vehicle and feeds the received power to a load external to the vehicle. A communication unit communicates between the vehicle and the power feeding device. A power supply unit supplies the communication unit with power. When an external power supply has failed, the power feeding device supplies the power that is received from the vehicle to the power supply unit to activate the communication unit, and the power feeding device also transmits via the communication unit to an ECU a specification regarding power supplied from the external power supply to the load. While the ECU follows a predetermined specification to control the power feeding unit, once the specification regarding power supplied from the external power supply to the load has been received, the ECU follows the received specification, rather than the predetermined specification, to control the power feeding unit.
    Type: Application
    Filed: October 27, 2011
    Publication date: August 14, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Tomoyuki Mizuno