Patents by Inventor Jun Kikuchi

Jun Kikuchi 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: 9853544
    Abstract: A method according to an exemplary aspect of the present disclosure includes, among other things, controlling a power supply system to avoid an over-voltage event across one or more switching devices of the power supply system, the controlling step based on switching overlap information that includes instructions for either advancing or retarding a switching signal associated with at least one of the switching devices.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: December 26, 2017
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Arvind Govindaraj, Jun Kikuchi
  • Publication number: 20170366005
    Abstract: In management device (10) for managing power storage device (20) in which a plurality of power storage blocks (B1 to B3) in which a plurality of series circuits of fuses and power storage cells is connected in parallel is connected in series, equalization controller 15 performs, when a voltage difference among the power storage blocks exceeds a set voltage difference, a control for equalizing power storage blocks (B1 to B3). Fuse blowout determination unit 18 determines, based on a frequency of equalization performed by equalization controller 15, whether one of the fuses is blown.
    Type: Application
    Filed: July 27, 2016
    Publication date: December 21, 2017
    Inventors: YASUMASA ISSHIKI, MUTSUHIKO TAKEDA, NORIHARU KOBAYASHI, JUN KIKUCHI
  • Publication number: 20170264284
    Abstract: A vehicle includes an electric machine, an IGBT, and a gate driver. The IGBT has a gate, an emitter, and a collector and is configured to flow an electric charge through a phase of the electric machine. The gate driver is configured to flow current onto the gate at a first level, and in response to a time integral of a voltage across the phase exceeding a predetermined level, transition from the first level to a second level less than the first level.
    Type: Application
    Filed: March 11, 2016
    Publication date: September 14, 2017
    Inventors: Zhuxian Xu, Chingchi Chen, Ke Zou, Xi Lu, Michael W. Degner, Jun Kikuchi
  • Patent number: 9676383
    Abstract: A vehicle control device includes a remaining capacity detecting module that detects a remaining capacity of a secondary battery which supplies an electric power to the drive motor, and a cruise mode switching module that switches a cruise mode from the first cruise mode to the second cruise mode on the basis of the remaining capacity, and switches the cruise mode from the second cruise mode to the first cruise mode on the basis of an external charging.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: June 13, 2017
    Assignee: FUJI JUKOGYO KABUSHIKI KAISHA
    Inventors: Mamoru Akita, Jun Kikuchi
  • Patent number: 9553540
    Abstract: A power converter has a phase leg with upper and lower switching devices coupled across a DC link. A junction between the devices is coupled to a load. A current sensor detects direction of current flow from the junction to the load. A gate driver activates the devices according to upper and lower gate signals in response to pulse-width modulation (PWM) to generate nominal gate signals from a variable duty cycle. When the positive current direction is detected then the upper gate signal has turn-on and turn-off times shifted by a predetermined offset with respect to the nominal signals, and dead-times are added to the lower gate signals. When the negative direction is detected then the lower gate signal has turn-on and turn-off times shifted by the predetermined offset with respect to the nominal signals, and dead-times are added to the upper gate signals.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: January 24, 2017
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Michael W. Degner, Chingchi Chen, Jun Kikuchi
  • Patent number: 9538691
    Abstract: A power inverter includes a plurality of power modules stacked in an array. A plurality of coolant chambers are interleaved with the modules. Each of the chambers includes an inlet and an outlet interconnected by a coolant path configured to circulate coolant within the chamber. Fins project into the coolant path and are configured to alter shape based on a temperature of the coolant to alter a turbulence associated with the coolant.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: January 3, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Jun Kikuchi, Guangyin Lei, Ming Su, Tienli Wang, Edward Chan-Jiun Jih, Michael W. Degner
  • Publication number: 20160309614
    Abstract: A power inverter includes a plurality of power modules stacked in an array. A plurality of coolant chambers are interleaved with the modules. Each of the chambers includes an inlet and an outlet interconnected by a coolant path configured to circulate coolant within the chamber. Fins project into the coolant path and are configured to alter shape based on a temperature of the coolant to alter a turbulence associated with the coolant.
    Type: Application
    Filed: April 15, 2015
    Publication date: October 20, 2016
    Inventors: Jun KIKUCHI, Guangyin LEI, Ming SU, Tienli WANG, Edward Chan-Jiun JIH, Michael W. DEGNER
  • Publication number: 20160211772
    Abstract: A power converter has one or more phase legs, each with upper and lower switching devices. A current sensor detects a magnitude of a current flow from a respective leg. A gate driver activates the upper and lower devices according to gate signals determined in response to a PWM control signal. When the detected current magnitude is greater than a positive threshold then the lower gate signal includes a dead-time insertion and the upper gate signal does not include a dead-time insertion. When the detected current magnitude is less than a negative threshold then the upper gate signal includes a dead-time insertion and the lower gate signal does not include a dead-time insertion. When the detected current magnitude is between the positive threshold and the negative threshold then the upper gate signal and the lower gate signal both include a dead-time insertion. Output distortion and control delay are greatly reduced.
    Type: Application
    Filed: January 21, 2015
    Publication date: July 21, 2016
    Inventors: MICHAEL W. DEGNER, CHINGCHI CHEN, JUN KIKUCHI
  • Publication number: 20160211774
    Abstract: A power converter has a phase leg with upper and lower switching devices coupled across a DC link. A junction between the devices is coupled to a load. A current sensor detects direction of current flow from the junction to the load. A gate driver activates the devices according to upper and lower gate signals in response to pulse-width modulation (PWM) to generate nominal gate signals from a variable duty cycle. When the positive current direction is detected then the upper gate signal has turn-on and turn-off times shifted by a predetermined offset with respect to the nominal signals, and dead-times are added to the lower gate signals. When the negative direction is detected then the lower gate signal has turn-on and turn-off times shifted by the predetermined offset with respect to the nominal signals, and dead-times are added to the upper gate signals.
    Type: Application
    Filed: January 21, 2015
    Publication date: July 21, 2016
    Inventors: MICHAEL W. DEGNER, CHINGCHI CHEN, JUN KIKUCHI
  • Publication number: 20160211773
    Abstract: A power converter receives a DC supply voltage across a phase leg. The phase leg comprises an upper switching device and a lower switching device coupled across the DC link, wherein a junction between the upper and lower switching devices is configured to be coupled to a load. A gate driver is coupled to the phase leg activating the respective upper switching device according to an upper gate signal and activating the respective lower switching device according to a lower gate signal in response to a pulse-width modulation (PWM) control signal at a PWM frequency. The gate driver shuffles among a plurality of alternate paired sets of dead-time inserted signals. Each paired set of dead-time inserted signals corresponds to a different distortion of a current flowing in the load, so that overall distortion is dispersed.
    Type: Application
    Filed: January 21, 2015
    Publication date: July 21, 2016
    Inventors: MICHAEL W. DEGNER, CHINGCHI CHEN, JUN KIKUCHI
  • Patent number: 9337678
    Abstract: A battery block for use in a power source system including battery blocks is provided with: a secondary battery; a communication circuit which outputs voltage information outside, the voltage information relating to a terminal voltage Vt of the secondary battery; a communication circuit which acquires the voltage information output from another battery block as other voltage information; and a discharge controller which discharges the secondary battery in a host battery block when a host voltage, which is the terminal voltage Vt of the secondary battery in the host battery block, is higher than a terminal voltage indicated by the other voltage information.
    Type: Grant
    Filed: May 1, 2012
    Date of Patent: May 10, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Jun Kikuchi
  • Publication number: 20160090081
    Abstract: A vehicle control device includes a remaining capacity detecting module that detects a remaining capacity of a secondary battery which supplies an electric power to the drive motor, and a cruise mode switching module that switches a cruise mode from the first cruise mode to the second cruise mode on the basis of the remaining capacity, and switches the cruise mode from the second cruise mode to the first cruise mode on the basis of an external charging.
    Type: Application
    Filed: August 14, 2015
    Publication date: March 31, 2016
    Inventors: Mamoru AKITA, Jun Kikuchi
  • Patent number: 9270102
    Abstract: An example multilayered bus bar includes, among other things, a first conductive layer, a second conductive layer, and a third conductive layer. The second conductive layer is sandwiched between the first and third conductive layers. A polarity of the second conductive layer is different than a polarity of the first and third conductive layers.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: February 23, 2016
    Assignee: Ford Global Technologies, Inc.
    Inventor: Jun Kikuchi
  • Patent number: 9051384
    Abstract: Antibody-containing solution formulations including a sugar as a stabilizer. Said solution formulations can further include a surfactant as a stabilizer.
    Type: Grant
    Filed: January 7, 2009
    Date of Patent: June 9, 2015
    Assignee: CHUGAI SEIYAKU KABUSHIKI KAISHA
    Inventors: Masaya Kakuta, Jun Kikuchi, Hidefumi Mizushima, Yoshimi Imaeda
  • Publication number: 20150145488
    Abstract: A method according to an exemplary aspect of the present disclosure includes, among other things, controlling a power supply system to avoid an over-voltage event across one or more switching devices of the power supply system, the controlling step based on switching overlap information that includes instructions for either advancing or retarding a switching signal associated with at least one of the switching devices.
    Type: Application
    Filed: November 25, 2013
    Publication date: May 28, 2015
    Applicant: Ford Global Technologies, LLC
    Inventors: Arvind GOVINDARAJ, Jun KIKUCHI
  • Publication number: 20150035496
    Abstract: An example multilayered bus bar includes, among other things, a first conductive layer, a second conductive layer, and a third conductive layer. The second conductive layer is sandwiched between the first and third conductive layers. A polarity of the second conductive layer is different than a polarity of the first and third conductive layers.
    Type: Application
    Filed: July 30, 2013
    Publication date: February 5, 2015
    Applicant: Ford Global Technologies, LLC
    Inventor: Jun Kikuchi
  • Publication number: 20140356925
    Abstract: The saccharification efficiency of cellulase is enhanced within reaction temperature regions of general fermenting microorganisms other than heat-resistant yeast. Cellulosic biomass is saccharified with cellulase in the presence of a polypeptide comprising the amino acid sequence shown in SEQ ID NO: 2 or 4 and having a function of enhancing the saccharifying activity of cellulase.
    Type: Application
    Filed: April 11, 2014
    Publication date: December 4, 2014
    Applicants: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Noriko SHISA, Nobuhiro ISHIDA, Chie IMAMURA, Shigeharu MORIYA, Jun KIKUCHI
  • Patent number: 8840884
    Abstract: Antibody-containing solution formulations including a sugar as a stabilizer. Said solution formulations can further include a surfactant as a stabilizer.
    Type: Grant
    Filed: February 14, 2003
    Date of Patent: September 23, 2014
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Masaya Kakuta, Jun Kikuchi, Hidefumi Mizushima, Yoshimi Imaeda
  • Patent number: 8766648
    Abstract: A method and system is provided for determining at least one operating characteristic associated with an inductor in a power converter system. The operating characteristic may be current through the inductor. The power converter system may be of the type used in a hybrid electric vehicle (HEV) to convert electric power from a high-voltage traction battery to drive an electric motor and/or a generator in the HEV.
    Type: Grant
    Filed: November 1, 2010
    Date of Patent: July 1, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Jun Kikuchi, Chingchi Chen, Michael W. Degner
  • Publication number: 20140167698
    Abstract: A battery block for use in a power source system including battery blocks is provided with: a secondary battery; a communication circuit which outputs voltage information outside, the voltage information relating to a terminal voltage Vt of the secondary battery; a communication circuit which acquires the voltage information output from another battery block as other voltage information; and a discharge controller which discharges the secondary battery in a host battery block when a host voltage, which is the terminal voltage Vt of the secondary battery in the host battery block, is higher than a terminal voltage indicated by the other voltage information.
    Type: Application
    Filed: May 1, 2012
    Publication date: June 19, 2014
    Applicant: PANASONIC CORPORATION
    Inventor: Jun Kikuchi