Patents by Inventor Kazuaki Takizawa

Kazuaki Takizawa 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: 11462783
    Abstract: Provided is an electric vehicle equipped with a battery mounted on a vehicle and capable of being charged by supplying electric power from outside of the vehicle; a temperature adjuster configured to adjust a temperature of the battery; and an air conditioner configured to control air-conditioning in a passenger compartment by a predetermined schedule, in which, if both an operating condition of the temperature adjuster and an operating condition of the air conditioner are established, the air conditioner operates after the temperature adjuster operates for a predetermined time.
    Type: Grant
    Filed: June 16, 2020
    Date of Patent: October 4, 2022
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Kazuaki Takizawa, Yoshikazu Onuma, Noriyasu Hakuta, Kodai Kasai, Toru Ogaki
  • Patent number: 11370371
    Abstract: A vehicle includes a vehicle interior, a battery provided below the vehicle interior with a floor panel in between, a front room provided in front of the vehicle interior with a dashboard in between, a charging port disposed in the front room, and a junction box which electrically connects a first power line extending from the charging port and a second power line extending from a power line connection portion of the battery. The junction box is disposed on a virtual line connecting the charging port and the power line connection portion in a side view.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: June 28, 2022
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Kazuaki Takizawa, Makoto Hatami, Takanori Suzuki, Naoto Kochi
  • Publication number: 20210291688
    Abstract: A power system includes a charge circuit connecting a low voltage circuit to a high voltage circuit; a charge control unit configured to execute an auxiliary charge control to charge a low voltage battery; a BCM configured to accept an ON operation or an OFF operation; and an auxiliary charge timing setting unit configured to set an auxiliary charge timing at which the auxiliary charge control is to be executed during a standstill period, the standstill period starting from acceptance of the OFF operation and ending at acceptance of the ON operation. If a soak time is shorter than an auxiliary charge-allowing period, the charge control unit executes the auxiliary charge control at the auxiliary charge timing set by the auxiliary charge timing setting unit, whereas if the soak time is longer than the auxiliary charge-allowing period, the charge control unit does not execute the auxiliary charge control.
    Type: Application
    Filed: March 15, 2021
    Publication date: September 23, 2021
    Inventors: Motohisa HIROSE, Natsuki EHARA, Nobuyuki ARUGA, Kazuaki TAKIZAWA
  • Publication number: 20210008963
    Abstract: An air conditioner includes: a secondary battery which is chargeable with electric power supplied from outside of a vehicle and store the electric power for running the vehicle; an air conditioning unit which performs air conditioning in a vehicle interior of the vehicle; a timer for managing a time for operating the air conditioning unit; and a control unit which sets a charging prohibition time period for prohibiting charging of the secondary battery for a time period set by a user.
    Type: Application
    Filed: June 16, 2020
    Publication date: January 14, 2021
    Inventors: Kazuaki Takizawa, Hiroyuki Kurokawa, Masahito Watanabe, Kazuhiro Matsuoka, Akira Saita, Kazufumi Kuroda
  • Publication number: 20210013564
    Abstract: Provided is an electric vehicle equipped with a battery mounted on a vehicle and capable of being charged by supplying electric power from outside of the vehicle; a temperature adjuster configured to adjust a temperature of the battery; and an air conditioner configured to control air-conditioning in a passenger compartment by a predetermined schedule, in which, if both an operating condition of the temperature adjuster and an operating condition of the air conditioner are established, the air conditioner operates after the temperature adjuster operates for a predetermined time.
    Type: Application
    Filed: June 16, 2020
    Publication date: January 14, 2021
    Inventors: Kazuaki Takizawa, Yoshikazu Onuma, Noriyasu Hakuta, Kodai Kasai, Toru Ogaki
  • Publication number: 20200079305
    Abstract: A vehicle includes a vehicle interior, a battery provided below the vehicle interior with a floor panel in between, a front room provided in front of the vehicle interior with a dashboard in between, a charging port disposed in the front room, and a junction box which electrically connects a first power line extending from the charging port and a second power line extending from a power line connection portion of the battery. The junction box is disposed on a virtual line connecting the charging port and the power line connection portion in a side view.
    Type: Application
    Filed: September 11, 2019
    Publication date: March 12, 2020
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Kazuaki TAKIZAWA, Makoto HATAMI, Takanori SUZUKI, Naoto KOCHI
  • Patent number: 9379589
    Abstract: A stator includes: a plurality of stator pieces around which coils are wound; a stator holder which supports the plurality of stator pieces by arranging the plurality of stator pieces in a peripheral wall portion in an annular shape; and a housing which is disposed on an outer side of the stator holder to support the stator holder, wherein the stator holder includes a flange portion which continuously protrudes outward in a radial direction thereof from an edge of one end side in an axial line direction thereof and is fixed to the housing, and a reinforcing portion which suppresses vibration in the radial direction of the stator holder on an outer peripheral surface of the peripheral wall portion.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: June 28, 2016
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Tatsuya Choji, Michihisa Kono, Kazuaki Takizawa
  • Patent number: 8674664
    Abstract: There is provided a charge controller capable of charging a capacitor while suppressing the progress of deterioration of the capacitor without unnecessary charge/discharge of the capacitor. The charge controller includes a voltage sensor 133 that detects the voltage of a capacitor 101, a current sensor 135 that detects the charge/discharge current of the capacitor 101, a battery ECU 123 that estimates the SOC of the capacitor 101 based on the detected voltage, and a management ECU 117. The management ECU 117 calculates the charge/discharge amount from the start of charging of the capacitor 101 by integrating the charge/discharge currents detected by the current sensor 135 and controls the charging of the capacitor 101 based on the estimated SOC and the calculated charge/discharge amount. The management ECU 117 updates and sets the estimated SOC to an actual use upper limit SOC based on the state characteristics of the capacitor 101.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: March 18, 2014
    Assignee: Honda Motor Co., Ltd
    Inventors: Kazuaki Takizawa, Yoshikazu Ohnuma, Mutsuji Suzuki, Yoshihiro Sunaga, Naoki Maruno, Satoru Komoda, Atsushi Shibutani, Yoshikazu Nishida
  • Publication number: 20130302152
    Abstract: A stator includes: a plurality of stator pieces around which coils are wound; a stator holder which supports the plurality of stator pieces by arranging the plurality of stator pieces in a peripheral wall portion in an annular shape; and a housing which is disposed on an outer side of the stator holder to support the stator holder, wherein the stator holder includes a flange portion which continuously protrudes outward in a radial direction thereof from an edge of one end side in an axial line direction thereof and is fixed to the housing, and a reinforcing portion which suppresses vibration in the radial direction of the stator holder on an outer peripheral surface of the peripheral wall portion.
    Type: Application
    Filed: November 29, 2011
    Publication date: November 14, 2013
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Tatsuya Choji, Michihisa Kono, Kazuaki Takizawa
  • Publication number: 20110221400
    Abstract: There is provided a charge controller capable of charging a capacitor while suppressing the progress of deterioration of the capacitor without unnecessary charge/discharge of the capacitor. The charge controller includes a voltage sensor 133 that detects the voltage of a capacitor 101, a current sensor 135 that detects the charge/discharge current of the capacitor 101, a battery ECU 123 that estimates the SOC of the capacitor 101 based on the detected voltage, and a management ECU 117. The management ECU 117 calculates the charge/discharge amount from the start of charging of the capacitor 101 by integrating the charge/discharge currents detected by the current sensor 135 and controls the charging of the capacitor 101 based on the estimated SOC and the calculated charge/discharge amount. The management ECU 117 updates and sets the estimated SOC to an actual use upper limit SOC based on the state characteristics of the capacitor 101.
    Type: Application
    Filed: November 20, 2009
    Publication date: September 15, 2011
    Applicant: HONDA MOTOR CO., LTD
    Inventors: Kazuaki Takizawa, Yushikazu Ohnuma, Mutsuji Suzuki, Yoshihiro Sunaga, Naoki Maruno, Satoru Komoda, Atsushi Shibutani, Yoshikazu Nishida
  • Patent number: 6878093
    Abstract: The power transmission mechanism reliably starts an internal combustion engine that is stopped during travel of a vehicle. While the internal combustion engine is stopped and the internal combustion engine and the transmission are disengaged by the main clutch, it is determined whether the mode is the EV travel mode, corresponding to the driving mode by the electric motor. In the case of the motor driving mode, and if the vehicle speed is less than a predetermined value, the engine is started in a neutral mode. If the vehicle speed is higher than a predetermined value, the engine is started in a standby mode. When starting in the standby mode, a gear set is selected based on the vehicle speed, and the input shaft and the output shaft are engaged.
    Type: Grant
    Filed: November 22, 2002
    Date of Patent: April 12, 2005
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Tatsuya Fukushima, Kazuaki Takizawa, Eijiro Shimabukuro, Katsuhiro Kitamura
  • Patent number: 6845832
    Abstract: The present invention is made to operate auxiliary machine while an engine is stopped, to start an engine and to charge a battery by providing a single motor and a simple construction and by providing a simple control operation. An engine system comprises an engine, a motor, and auxiliary machine, and further comprises a planetary mechanism having three elements comprising a sun gear, a carrier and a ring gear, to which any one of an output shaft of the engine, an output shaft of the motor and a drive shaft of the auxiliary machine are respectively connected, a uniting connection device capable of uniting two or more elements of the planetary mechanism, and a rotation direction restriction device which restricts a rotation direction of the drive shaft of the auxiliary machine to one direction.
    Type: Grant
    Filed: November 18, 2002
    Date of Patent: January 25, 2005
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Kazuaki Takizawa, Tatsuya Fukushima, Katsuya Minami, Masato Fujioka, Kazuo Ooyama, Eijiro Shimabukuro, Junya Tachikawa
  • Patent number: 6823954
    Abstract: In a hybrid vehicle control system equipped with an internal combustion engine (10), an electric motor (14) connected to the engine through a hydraulic clutch (12) and an automatic transmission (16) connected to the motor to be inputted with an output torque outputted from the engine and the motor to transmit the same to driven wheels (24) of the vehicle, the output torque of the motor (TM) and supply of hydraulic pressure to the clutch (PCL) is increased until the determined speed difference (dN) is less than a threshold value (dN3) and then the output torque of the engine is reduced such that the engine speed (NE) is synchronized with the motor speed (NM) when the speed difference (dN) becomes less than the predetermined value (dN3), while increasing the supply of hydraulic pressure to a line pressure equivalent value. With this, it can effectively reduces shock at clutch engagement during switchover from electric motor-powered driving to internal combustion engine-powered driving.
    Type: Grant
    Filed: May 14, 2002
    Date of Patent: November 30, 2004
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Eijiro Shimabukuro, Kazuaki Takizawa, Kenji Hagiwara
  • Publication number: 20030104901
    Abstract: The present invention reliably starts an internal combustion engine that is stopped during travel of the vehicle. While the internal combustion engine is stopped and the internal combustion engine and the transmission are disengaged by the main clutch, it is determined whether the mode is the EV travel mode, corresponding to the driving mode by the electric motor. In the case of the motor driving mode, and if the vehicle speed is less than a predetermined value, the engine is started in neutral mode. If the vehicle speed is higher than a predetermined value, the engine is started in standby mode. When starting in the standby mode, a gear set is selected based on the vehicle speed, and the input shaft and the output shaft are engaged.
    Type: Application
    Filed: November 22, 2002
    Publication date: June 5, 2003
    Applicant: HONDA GIKEN KOGYO KABUSHIKI KAISHA
    Inventors: Tatsuya Fukushima, Kazuaki Takizawa, Eijiro Shimabukuro, Katsuhiro Kitamura
  • Publication number: 20030094317
    Abstract: The present invention is made to operate auxiliary machine while an engine is stopped, to start an engine and to charge a battery by providing a single motor and a simple construction and by providing a simple control operation. An engine system comprises an engine, a motor, and auxiliary machine, and further comprises a planetary mechanism having three elements comprising a sun gear, a carrier and a ring gear, to which any one of an output shaft of the engine, an output shaft of the motor and a drive shaft of the auxiliary machine are respectively connected, a uniting connection device capable of uniting two or more elements of the planetary mechanism, and a rotation direction restriction device which restricts a rotation direction of the drive shaft of the auxiliary machine to one direction.
    Type: Application
    Filed: November 18, 2002
    Publication date: May 22, 2003
    Applicant: HONDA GIKEN KOGYO KABUSHIKI KAISHA
    Inventors: Kazuaki Takizawa, Tatsuya Fukushima, Katsuya Minami, Masato Fujioka, Kazuo Ooyama, Eijiro Shimabukuro, Junya Tachikawa
  • Publication number: 20020170758
    Abstract: In a hybrid vehicle control system equipped with an internal combustion engine (10), an electric motor (14) connected to the engine through a hydraulic clutch (12) and an automatic transmission (16) connected to the motor to be inputted with an output torque outputted from the engine and the motor to transmit the same to driven wheels (24) of the vehicle, the output torque of the motor (TM) and supply of hydraulic pressure to the clutch (PCL) is increased until the determined speed difference (dN) is less than a threshold value (dN3) and then the output torque of the engine is reduced such that the engine speed (NE) is synchronized with the motor speed (NM) when the speed difference (dN) becomes less than the predetermined value (dN3), while increasing the supply of hydraulic pressure to a line pressure equivalent value. With this, it can effectively reduces shock at clutch engagement during switchover from electric motor-powered driving to internal combustion engine-powered driving.
    Type: Application
    Filed: May 14, 2002
    Publication date: November 21, 2002
    Applicant: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Eijiro Shimabukuro, Kazuaki Takizawa, Kenji Hagiwara
  • Patent number: 6377017
    Abstract: A control device for an alternating current motor includes: a target current generating unit which generates a current order value, based on a torque order, as a d-axis target current and a q-axis target current on dq coordinates; a current detection device which detects an alternating current supplied to each phase of a polyphase alternating current motor; a coordinate transforming unit which transforms the alternating current detected by the current detection device into a d-axis current and a q-axis current on the dq coordinates; and a vector control unit which carries out a current feedback control so that the d-axis current follows up the d-axis target current and the q-axis current follows up the q-axis target current.
    Type: Grant
    Filed: December 20, 2000
    Date of Patent: April 23, 2002
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Hajime Kondou, Yuuji Saito, Hideyuki Jinzai, Kazuaki Takizawa, Hiroaki Shinoki, Tomoyuki Itoh
  • Publication number: 20010006335
    Abstract: A control device for an alternating current motor includes: a target current generating unit which generates a current order value, based on a torque order, as a d-axis target current and a q-axis target current on dq coordinates; a current detection device which detects an alternating current supplied to each phase of a polyphase alternating current motor; a coordinate transforming unit which transforms the alternating current detected by the current detection device into a d-axis current and a q-axis current on the dq coordinates; and a vector control unit which carries out a current feedback control so that the d-axis current follows up the d-axis target current and the q-axis current follows up the q-axis target current.
    Type: Application
    Filed: December 20, 2000
    Publication date: July 5, 2001
    Applicant: HONDA GIKEN KOGYO KABUSHIKIKAISHA
    Inventors: Hajime Kondou, Yuuji Saito, Hideyuki Jinzai, Kazuaki Takizawa, Hiroaki Shinoki