Patents by Inventor Motoi Ito

Motoi Ito 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: 10158241
    Abstract: An electricity storage system includes an electricity storage block including an electricity storage element for performing charging and discharging; a relay switched between an ON state in which the electric storage block is connected to a load and an OFF state in which a connection between the electricity storage block and the load is cut off; a controller for controlling the ON state and the OFF state of the relay; and a current cutoff circuit so as to cut off energization of the electricity storage block. The current cutoff circuit has an alarm circuit to indicate that the electricity storage block is in an overcharged state by comparing a voltage value of the electricity storage block and a threshold; a latch circuit retains the alarm signal; and a transistor receives an output signal of the latch circuit and switches the relay from the ON state to the OFF state.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: December 18, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yukinari Tanabe, Yuji Nishi, Hiroyuki Kaiya, Hiromasa Tanaka, Keiji Kaita, Motoi Ito
  • Patent number: 10096992
    Abstract: An electrical storage system includes an electrical storage device (10); a relay (SMR-B, SMR-G, SMR-P) switching between on/off states; a current interruption circuit (60) interrupting energization of the electrical storage device by causing the relay to switch from the on state to the off state; and a controller (30) executing drive control over the relay. The current interruption circuit includes an alarm circuit (63) outputting an alarm signal indicating overcharging/overdischarging of any one electrical storage block by comparing a voltage value of each electrical storage block with a threshold; a latch circuit (64) retaining the alarm signal; and a transistor (68) causing the relay to switch from the on state to the off state upon reception of an output signal of the latch circuit. The controller determines an energization state of the electrical storage device by executing control for turning on the relay while control for causing the alarm circuit to output the alarm signal is being executed.
    Type: Grant
    Filed: November 29, 2013
    Date of Patent: October 9, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keiji Kaita, Yuji Nishi, Yukinari Tanabe, Hiromasa Tanaka, Motoi Ito
  • Patent number: 9941712
    Abstract: An electrical storage system includes a relay switching between an on state where an electrical storage device (10) is connected to a load and an off state where connection of the electrical storage device with the load is interrupted; a controller controlling an on-off state of the relay; and a current interruption circuit (60) interrupting energization of the electrical storage device. The current interruption circuit includes an alarm circuit (63) outputting an alarm signal indicating that any one electrical storage block is in an overcharged state by comparing a voltage value of each electrical storage block with a threshold; a latch circuit (64) retaining the alarm signal; a transistor (66) causing the relay to switch from the on state to the off state upon reception of an output signal of the latch circuit; and a power supply circuit (63d) generating electric power for operating the latch circuit using electric power of the electrical storage device.
    Type: Grant
    Filed: November 28, 2013
    Date of Patent: April 10, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keiji Kaita, Yuji Nishi, Yukinari Tanabe, Hiromasa Tanaka, Motoi Ito
  • Patent number: 9577458
    Abstract: An electrical storage system includes: an electrical storage device (10) including serially connected electrical storage blocks; a relay (SMR-B, SMR-G) switching a connection state between the electrical storage device and a load; a controller (30, 34) controlling the relay; and a current interruption circuit (60) interrupting energization of the electrical storage device. The current interruption circuit (60) includes an alarm circuit (63) outputting an alarm signal indicating that any one electrical storage block is overcharged or overdischarged by comparing a voltage value of each electrical storage block with a threshold; a latch circuit (64) retaining the alarm signal; and a transistor (68) causing the relay to switch from an on state to an off state upon reception of a latch circuit output signal. The controller determines an energization state of the electrical storage device after executing control for causing the alarm circuit to output the alarm signal by changing the voltage value or the threshold.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: February 21, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keiji Kaita, Yuji Nishi, Yukinari Tanabe, Hiromasa Tanaka, Motoi Ito
  • Publication number: 20150357856
    Abstract: [Problem] To provide a configuration for cutting off energization of an electricity storage block without interposing a controller. [Solution] The electricity storage system has: an electricity storage block including an electricity storage element (11) for performing charging and discharging; a relay (SMR-B, SMR-G) switched between an ON state in which the electric storage block is connected to a load (22, 23) and an OFF state in which a connection between the electricity storage block and the load is cut off; a controller (34) for controlling the ON state and the OFF state of the relay; and a current cutoff circuit (60) for switching the relay from the ON state to the OFF state, so as to cut off energization of the electricity storage block.
    Type: Application
    Filed: December 3, 2012
    Publication date: December 10, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yukinari TANABE, Yuji NISHI, Hiroyuki KAIYA, Hiromasa TANAKA, Keiji KAITA, Motoi ITO
  • Publication number: 20150255979
    Abstract: An electrical storage system includes an electrical storage device (10); a relay (SMR-B, SMR-G, SMR-P) switching between on/off states; a current interruption circuit (60) interrupting energization of the electrical storage device by causing the relay to switch from the on state to the off state; and a controller (30) executing drive control over the relay. The current interruption circuit includes an alarm circuit (63) outputting an alarm signal indicating overcharging/overdischarging of any one electrical storage block by comparing a voltage value of each electrical storage block with a threshold; a latch circuit (64) retaining the alarm signal; and a transistor (68) causing the relay to switch from the on state to the off state upon reception of an output signal of the latch circuit. The controller determines an energization state of the electrical storage device by executing control for turning on the relay while control for causing the alarm circuit to output the alarm signal is being executed.
    Type: Application
    Filed: November 29, 2013
    Publication date: September 10, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keiji Kaita, Yuji Nishi, Yukinari Tanabe, Hiromasa Tanaka, Motoi Ito
  • Publication number: 20150229143
    Abstract: An electrical storage system includes a relay switching between an on state where an electrical storage device (10) is connected to a load and an off state where connection of the electrical storage device with the load is interrupted; a controller controlling an on-off state of the relay; and a current interruption circuit (60) interrupting energization of the electrical storage device. The current interruption circuit includes an alarm circuit (63) outputting an alarm signal indicating that any one electrical storage block is in an overcharged state by comparing a voltage value of each electrical storage block with a threshold; a latch circuit (64) retaining the alarm signal; a transistor (66) causing the relay to switch from the on state to the off state upon reception of an output signal of the latch circuit; and a power supply circuit (63d) generating electric power for operating the latch circuit using electric power of the electrical storage device.
    Type: Application
    Filed: November 28, 2013
    Publication date: August 13, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keiji Kaita, Yuji Nishi, Yukinari Tanabe, Hiromasa Tanaka, Motoi Ito
  • Publication number: 20150229154
    Abstract: An electrical storage system includes: an electrical storage device (10) including serially connected electrical storage blocks; a relay (SMR-B, SMR-G) switching a connection state between the electrical storage device and a load; a controller (30, 34) controlling the relay; and a current interruption circuit (60) interrupting energization of the electrical storage device. The current interruption circuit (60) includes an alarm circuit (63) outputting an alarm signal indicating that any one electrical storage block is overcharged or overdischarged by comparing a voltage value of each electrical storage block with a threshold; a latch circuit (64) retaining the alarm signal; and a transistor (68) causing the relay to switch from an on state to an off state upon reception of a latch circuit output signal. The controller determines an energization state of the electrical storage device after executing control for causing the alarm circuit to output the alarm signal by changing the voltage value or the threshold.
    Type: Application
    Filed: November 27, 2013
    Publication date: August 13, 2015
    Inventors: Keiji Kaita, Yuji Nishi, Yukinari Tanabe, Hiromasa Tanaka, Motoi Ito
  • Patent number: 5996521
    Abstract: A large-sized columnar body made of a fiber reinforced plastics materials (FRP) has three layers A, B and C in this order, respectively formed by a fiber reinforced plastics material consisting of continuous fibers and a resin, wherein the reinforcing fibers of the layer B are carbon fibers arranged in the longitudinal direction of the columnar body and that the reinforcing fibers of the layers A and C are carbon fibers and/or glass fibers arranged at .+-.50 to .+-.70 degrees with respect to the longitudinal direction of the columnar body. The large-sized columnar body made of FRP has a high compressive strength and hence can be lighter than conventional large-sized columnar bodies. Hence, it is suitable as a primary structural member used in buildings, structural components, aircraft, ships, and the like.
    Type: Grant
    Filed: January 16, 1998
    Date of Patent: December 7, 1999
    Assignee: Toray Industries, Inc.
    Inventors: Akihiko Kitano, Masanobu Kobayashi, Motoi Ito