Patents by Inventor Takuya Naruse

Takuya Naruse 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).

  • Publication number: 20240213523
    Abstract: The solid electrolyte material of the present disclosure comprises lithium and a plurality of anion elements. The plurality of anion elements comprises a pnictogen element, a chalcogen element, and a halogen element. The pnictogen element includes at least one selected from the group consisting of N, P, As, Sb, and Bi, the chalcogen element is at least one selected from the group consisting of S, Se, and Te, and the halogen element is at least one selected from the group consisting of Br and I. The battery of the present disclosure comprises a positive electrode, a negative electrode, and an electrolyte layer provided between the positive electrode and the negative electrode. At least one selected from the group consisting of the positive electrode, the negative electrode, and the electrolyte layer comprises the solid electrolyte material of the present disclosure.
    Type: Application
    Filed: January 24, 2024
    Publication date: June 27, 2024
    Inventors: TOMOYASU YOKOYAMA, KOSEI OHURA, TAKUYA NARUSE
  • Publication number: 20240171102
    Abstract: An electric motor includes processing circuitry. The processing circuitry estimates the position of a rotor in a mode selected from an induced voltage mode and a harmonic superimposition mode. The induced voltage mode is a mode of estimating the position of the rotor based on an induced voltage that is generated in three-phase coils. The harmonic superimposition mode is a mode of estimating the position of the rotor by superimposing a harmonic on a command value. The processing circuitry estimates the position of the rotor using the induced voltage mode when the output voltage is greater than or equal to a predetermined threshold value and estimates the position of the rotor using the harmonic superimposition mode when the output voltage is less than the threshold value.
    Type: Application
    Filed: November 8, 2023
    Publication date: May 23, 2024
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Masashi KUBOTA, Takuya NARUSE, Takashi KAWASHIMA
  • Publication number: 20240162842
    Abstract: An electric motor includes processing circuitry estimates a position of a rotor in a mode selected from an induced voltage mode and a harmonic superimposition mode. The processing circuitry estimates the position of the rotor using the induced voltage mode when the input voltage is less than or equal to a predetermined voltage threshold value or when the phase current is greater than or equal to a predetermined current threshold value and estimates the position of the rotor using the harmonic superimposition mode when the input voltage is greater than the voltage threshold value and the phase current is less than the current threshold value.
    Type: Application
    Filed: November 8, 2023
    Publication date: May 16, 2024
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Masashi KUBOTA, Takuya NARUSE, Takashi KAWASHIMA
  • Publication number: 20240097185
    Abstract: The solid electrolyte material of the present disclosure comprises a crystal phase comprising Li, Mg, and X. Here, X is at least one selected from the group consisting of F, Cl, Br, and I, and the crystal phase has a crystal structure belonging to the space group Fm-3m. The battery of the present disclosure comprises a positive electrode, a negative electrode, and an electrolyte layer disposed between the positive electrode and the negative electrode. At least one selected from the group consisting of the positive electrode, the negative electrode, and the electrolyte layer comprises the solid electrolyte material of the present disclosure.
    Type: Application
    Filed: November 28, 2023
    Publication date: March 21, 2024
    Inventors: KOSEI OHURA, TOMOYASU YOKOYAMA, TAKUYA NARUSE
  • Publication number: 20240088436
    Abstract: The solid electrolyte material of the present disclosure comprises lithium and a plurality of anion elements. The plurality of anion elements includes antimony and at least one element selected from the group consisting of pnictogen elements excluding antimony, chalcogen elements, and halogen elements. The battery of the present disclosure comprises a positive electrode, a negative electrode, and an electrolyte layer disposed between the positive electrode and the negative electrode, wherein at least one selected from the group consisting of the positive electrode, the negative electrode, and the electrolyte layer contains the solid electrolyte material of the present disclosure.
    Type: Application
    Filed: November 20, 2023
    Publication date: March 14, 2024
    Inventors: TOMOYASU YOKOYAMA, KOSEI OHURA, TAKUYA NARUSE
  • Publication number: 20240056016
    Abstract: An electric motor device includes an electric motor, an inverter, a noise reducer, a control unit, and a metal housing. The controller controls switching elements using a PWM signal generated from a voltage instruction value and a carrier frequency. The control unit includes a calculation portion that calculates a modulation factor of the voltage instruction value and a setting portion that sets the carrier frequency in accordance with the modulation factor. The carrier frequency set by the setting portion is higher when the modulation factor is less than a predetermined modulation factor than when the modulation factor is greater than or equal to the predetermined modulation factor.
    Type: Application
    Filed: August 4, 2023
    Publication date: February 15, 2024
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takuya NARUSE, Shunsuke AMBO, Takashi OGAMI
  • Publication number: 20240021871
    Abstract: The solid electrolyte material of the present disclosure includes Li, La, O, X, and a hydride. X is at least one selected from the group consisting of F, Cl, Br, and I. The battery of the present disclosure includes a positive electrode, a negative electrode, and an electrolyte layer. The electrolyte layer is disposed between the positive electrode and the negative electrode. At least one selected from the group consisting of the positive electrode, the negative electrode, and the electrolyte layer contains the solid electrolyte material of the present disclosure.
    Type: Application
    Filed: September 19, 2023
    Publication date: January 18, 2024
    Inventors: TAKUYA NARUSE, TOMOYASU YOKOYAMA
  • Publication number: 20240006658
    Abstract: The solid electrolyte material of the present disclosure consists of Li, La, O, and I. The battery of the present disclosure includes a positive electrode, a negative electrode, and an electrolyte layer. The electrolyte layer is disposed between the positive electrode and the negative electrode. At least one selected from the group consisting of the positive electrode, the negative electrode, and the electrolyte layer contains the solid electrolyte material of the present disclosure.
    Type: Application
    Filed: September 19, 2023
    Publication date: January 4, 2024
    Inventors: TAKUYA NARUSE, TOMOYASU YOKOYAMA
  • Publication number: 20230318500
    Abstract: A controller uses a differential pressure between a discharge pressure and a suction pressure to estimate an execution time of braking control needed to fix a position of a rotor at a specific angle. Further, the controller executes the braking control by the estimated execution time. This prevents the controller from unnecessarily continuing to execute the braking control.
    Type: Application
    Filed: March 29, 2023
    Publication date: October 5, 2023
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Keita TATEMATSU, Takashi Kawashima, Takuya Naruse
  • Patent number: 11437945
    Abstract: The motor-driven compressor includes an electric motor, a housing, a compression portion, and an inverter device. The inverter device includes an inverter circuit, a current sensor, a coordinate converter, a speed controller, a current controller, a PWM controller, and a rotation angle estimator. The speed controller generates a d-axis current command value and a q-axis current command value such that a necessary torque to drive the electric motor occurs. The inverter device includes a heat-generating current command section that increases a temperature of the electric motor by changing the d-axis current command value and the q-axis current command value. The heat-generating current command section changes the d-axis current command value and the q-axis current command value so as to shift them in a direction in which a d-axis current value increases along a constant torque curve in a d-q coordinate system.
    Type: Grant
    Filed: March 2, 2021
    Date of Patent: September 6, 2022
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takuya Naruse, Kazuki Najima
  • Publication number: 20210281201
    Abstract: The motor-driven compressor includes an electric motor, a housing, a compression portion, and an inverter device. The inverter device includes an inverter circuit, a current sensor, a coordinate converter, a speed controller, a current controller, a PWM controller, and a rotation angle estimator. The speed controller generates a d-axis current command value and a q-axis current command value such that a necessary torque to drive the electric motor occurs. The inverter device includes a heat-generating current command section that increases a temperature of the electric motor by changing the d-axis current command value and the q-axis current command value. The heat-generating current command section changes the d-axis current command value and the q-axis current command value so as to shift them in a direction in which a d-axis current value increases along a constant torque curve in a d-q coordinate system.
    Type: Application
    Filed: March 2, 2021
    Publication date: September 9, 2021
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takuya NARUSE, Kazuki NAJIMA
  • Patent number: 9590552
    Abstract: A motor drive device drives a multi-phase synchronous motor in an electric compressor. The multi-phase synchronous motor includes a rotor that is provided with a permanent magnet and a stator having coils of different phases. The motor drive device includes an inverter that supplies current to the coils and a control unit that controls the inverter. The control unit executes an initial angular position calculation processing of detecting a d-axis and a q-axis as an initial angular position of the rotor, a rotating processing of rotating the d-axis and the q-axis in a direction opposite to rotation of the rotor, an acceleration processing of accelerating the rotation of the rotor, and a sensorless control processing of controlling the rotation of the rotor.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: March 7, 2017
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yoshiki Nagata, Takuya Naruse, Akimitsu Ichihara
  • Publication number: 20150311845
    Abstract: A motor drive device drives a multi-phase synchronous motor in an electric compressor. The multi-phase synchronous motor includes a rotor that is provided with a permanent magnet and a stator having coils of different phases. The motor drive device includes an inverter that supplies current to the coils and a control unit that controls the inverter. The control unit executes an initial angular position calculation processing of detecting a d-axis and a q-axis as an initial angular position of the rotor, a rotating processing of rotating the d-axis and the q-axis in a direction opposite to rotation of the rotor, an acceleration processing of accelerating the rotation of the rotor, and a sensorless control processing of controlling the rotation of the rotor.
    Type: Application
    Filed: April 22, 2015
    Publication date: October 29, 2015
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yoshiki NAGATA, Takuya NARUSE, Akimitsu ICHIHARA
  • Publication number: 20140375240
    Abstract: In an electric compressor for a vehicle, a sensor is provided between a filter circuit and a negative terminal of the electric motor that is connected to an in-vehicle power source. An inverter includes a controller which is configured to check the frequency of the ripple component of the input current to the inverter based on the current measured by the current sensor and variably sets the carrier frequency of the inverter so as not to coincide with the checked frequency.
    Type: Application
    Filed: June 16, 2014
    Publication date: December 25, 2014
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takashi KAWASHIMA, Yoshiki NAGATA, Takuya NARUSE
  • Publication number: 20140322048
    Abstract: A motor-driven compressor in which an electric driving mechanism is capable of keeping high efficiency. The compressor includes an electric driving mechanism, a compression mechanism and a motor drive circuit. The electric driving mechanism is accommodated in a housing. The housing has a main body portion in a cylindrical shape, a bulging portion that bulges in a radially outward direction from the main body portion, and a partition wall. In the main body portion, a stator accommodation chamber is formed. In the stator accommodation chamber, a stator of the electric driving mechanism is accommodated. In the bulging portion, a cluster block accommodation chamber is formed. In the cluster block accommodation chamber, a cluster block is accommodated. A partition wall separates the stator accommodation chamber and the cluster block accommodation chamber in a radial direction. The main body portion and the partition wall support a stator core.
    Type: Application
    Filed: April 23, 2014
    Publication date: October 30, 2014
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Tomoyoshi INAGAKI, Taku ADANIYA, Hiroki NAGANO, Takuya NARUSE
  • Patent number: 8736221
    Abstract: A direct-current to three-phase alternating-current inverter system includes a three-phase motor, a plurality of switching elements, an inverter circuit for the three-phase motor, a capacitor, a direct-current power source and a control circuit. The switching elements arranged in the inverter circuit serve as upper and lower arms for the respective three phases of the three-phase motor, respectively. The capacitor is connected in parallel to the respective pairs of the upper and lower arms. The direct-current power source is arranged between the neutral-point of the three-phase motor and the respective lower arms or the respective upper arms. The control circuit controls the switching elements such that at least the switching frequency of one pair of the switching elements for one phase through which the current having the greatest value flows is lower than the switching frequencies of the other pairs of the switching elements for the other phases.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: May 27, 2014
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Takuya Naruse, Kazuki Najima
  • Patent number: 8441225
    Abstract: A DC to three-phase AC inverter system includes a three-phase motor, an inverter circuit, switching elements, a capacitor, a DC power source and a control circuit. The DC power source is connected to the three-phase motor at a neutral point thereof. The control circuit calculates voltage commands, first through third divided boost commands by dividing a boost command, and first through third drive signals based on the voltage commands and the first through third divided boost commands. The second and third divided boost commands are used when the PWM control is performed by turning on and off the switching elements for the second and third phases while the switching elements for the first phase continues to be on or off state is set larger than those used when the PWM control is performed by turning on and off the switching elements for the first through third phases.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: May 14, 2013
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Takuya Naruse, Kazuki Najima
  • Publication number: 20110241585
    Abstract: A DC to three-phase AC inverter system includes a three-phase motor, an inverter circuit, switching elements, a capacitor, a DC power source and a control circuit. The DC power source is connected to the three-phase motor at a neutral point thereof. The control circuit calculates voltage commands, first through third divided boost commands by dividing a boost command, and first through third drive signals based on the voltage commands and the first through third divided boost commands. The second and third divided boost commands are used when the PWM control is performed by turning on and off the switching elements for the second and third phases while the switching elements for the first phase continues to be on or off state is set larger than those used when the PWM control is performed by turning on and off the switching elements for the first through third phases.
    Type: Application
    Filed: March 30, 2011
    Publication date: October 6, 2011
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takuya NARUSE, Kazuki NAJIMA
  • Publication number: 20110241587
    Abstract: A direct-current to three-phase alternating-current inverter system includes a three-phase motor, a plurality of switching elements, an inverter circuit for the three-phase motor, a capacitor, a direct-current power source and a control circuit. The switching elements arranged in the inverter circuit serve as upper and lower arms for the respective three phases of the three-phase motor, respectively. The capacitor is connected in parallel to the respective pairs of the upper and lower arms. The direct-current power source is arranged between the neutral-point of the three-phase motor and the respective lower arms or the respective upper arms. The control circuit controls the switching elements such that at least the switching frequency of one pair of the switching elements for one phase through which the current having the greatest value flows is lower than the switching frequencies of the other pairs of the switching elements for the other phases.
    Type: Application
    Filed: March 30, 2011
    Publication date: October 6, 2011
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takuya NARUSE, Kazuki Najima
  • Publication number: 20060235926
    Abstract: A portable communication apparatus is provided, in which a plurality of event information items are acquired, each of which includes information acquired when a user executes a predetermined function of mobile phone and a date and time of this execution, and the plurality of event information items are stored in a memory in the form of an event list. When the user operates an operational unit and selects desired event information from the event list displayed on a display device, control means control such that the selected event information is read from the memory and sent to a server by communication means as information displayed with a predetermined display format. A server provides a simplified website including information sent from the portable communication apparatus. Accordingly, daily activities of the user are automatically recorded, and the user can easily build a simplified website (blog) based on the recorded contents of action.
    Type: Application
    Filed: March 29, 2006
    Publication date: October 19, 2006
    Applicant: SONY ERICSSON MOBILE COMMUNICATIONS JAPAN, INC.
    Inventor: Takuya Naruse