Patents by Inventor Shuji Tomura

Shuji Tomura 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: 11411414
    Abstract: There is provided a power supply device including a plurality of battery modules, the battery modules being connected in series with one another according to a gate driving signal from a controller, the power supply device transmitting the gate driving signal from upstream of the series connection toward downstream of the series connection after the gate driving signal is delayed at delay circuits included in the respective battery modules, and returning the gate driving signal to the controller from a most downstream battery module, wherein the power supply device performs malfunction determination of the delay circuits based on a time difference from a transmission time of a signal from the controller to a reception time of the signal.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: August 9, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shigeaki Goto, Kyosuke Tanemura, Shuji Tomura, Naoki Yanagizawa, Kazuo Ootsuka, Junta Izumi, Kenji Kimura
  • Patent number: 11404897
    Abstract: A power supply system includes a plurality of sweep modules that is connected to a main line. Each sweep module includes a switching element that switches between connection and disconnection between a battery module and the main line and is formed of a MOSFET. A failure detecting device of the power supply system includes a temperature detecting unit configured to detect temperatures of the plurality of sweep modules and a failure determining unit configured to determine whether a difference between a temperature of one sweep module selected from the plurality of sweep modules and a reference temperature which is determined based on the temperatures of other sweep modules is greater than a predetermined threshold value.
    Type: Grant
    Filed: November 15, 2019
    Date of Patent: August 2, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Juni Yasoshima, Junta Izumi, Kenji Kimura, Toshihiro Katsuda, Kohei Matsuura, Junichi Matsumoto, Shuji Tomura, Shigeaki Goto, Naoki Yanagizawa, Kyosuke Tanemura, Kazuo Ootsuka, Takayuki Ban, Hironobu Nishi
  • Patent number: 11349156
    Abstract: In a power supply device including a plurality of battery modules each including a secondary battery, in which the battery modules are connected in series to one another according to a gate driving signal from a controller and in each of the battery modules, the gate driving signal is delayed in a gate driving signal processing circuit included in the battery module and then transmitted from upstream to downstream of the series connection, an ID is provided for each of the battery modules by transmitting an ID setting signal for providing an ID unique to the battery module using a gate signal line for transmitting the gate driving signal.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: May 31, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoki Yanagizawa, Shuji Tomura, Kyosuke Tanemura, Kazuo Ootsuka, Shigeaki Goto, Junta Izumi, Kenji Kimura
  • Publication number: 20220123562
    Abstract: A power supply device includes: a first high-voltage line for exchanging the electric power externally; a second high-voltage line for applying current flowing in a direction opposite to the first high-voltage line; a plurality of batteries; a plurality of SUs, the SUs being provided corresponding to the respective batteries, switching a connection state of the batteries to the first high-voltage line, and being disposed in a circle; and an SCU that controls the SUs. The SU can switch between a first state in which the battery corresponding to the SU is connected in series to the first high-voltage line and a second state in which the battery is not connected to the first high-voltage line. The SCU controls the SUs to switch to the first state or the second state in accordance with a voltage of the electric power to be charged and discharged.
    Type: Application
    Filed: October 18, 2021
    Publication date: April 21, 2022
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Junta IZUMI, Kenji KIMURA, Masakazu HABU, Hiroshi TSUKADA, Atsuhiro TAKAHASHI, Takashi KOJIMA, Shuji TOMURA, Kazuo OOTSUKA, Naoki YANAGIZAWA, Kyosuke TANEMURA
  • Patent number: 11302970
    Abstract: A power supply system includes a controller, and a plurality of battery modules. The battery modules are connected in series, according to a gate drive signal from the controller, to provide series connection, and each of the battery modules has a disconnecting device configured to force the battery module to be disconnected from the series connection. The controller is configured to estimate the internal resistance of the battery module disconnected from the series connection by the disconnecting device, from a module voltage of the battery module before the battery module is disconnected from the series connection, a module voltage immediately after the battery module is disconnected, and a module current delivered from the battery module.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: April 12, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kyosuke Tanemura, Shuji Tomura, Naoki Yanagizawa, Kazuo Ootsuka, Junta Izumi, Kenji Kimura
  • Patent number: 11218013
    Abstract: A power supply system includes a plurality of battery modules and a control unit, and supplies electric power from the battery modules in an uppermost stage and a lowermost stage to a load. The control unit is configured to perform ON/OFF control for setting the battery modules to an ON state in an active time, setting the battery modules to an OFF state in a non-active time, and alternately repeating the active time and the non-active time. The control unit is configured to delay an ON/OFF control timing for the battery module in a lower stage adjacent to the battery module in a higher stage by a control delay time in comparison with the battery module in the higher stage. The control unit is configured to randomly determine the control delay times for the battery modules in lower stages than the battery module in the uppermost stage.
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: January 4, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroshi Tsukada, Shuji Tomura, Kazuo Ootsuka, Naoki Yanagizawa, Kyosuke Tanemura, Junta Izumi, Kenji Kimura
  • Patent number: 11196271
    Abstract: Provided is a full-charge-capacity estimating device that has one or more of a plurality of battery modules, as battery-modules-to-be-measured, charged or discharged by means of a first switch element and a second switch element according to whether a power supply device is in a powering state or a regenerating state, measures an integrated current value and a change in the state-of-charge of the battery-module-to-be-measured, and then estimates the full charge capacity of the battery-module-to-be-measured from the integrated current value and the change in the state-of-charge.
    Type: Grant
    Filed: October 7, 2019
    Date of Patent: December 7, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shuji Tomura, Shigeaki Goto, Naoki Yanagizawa, Kyosuke Tanemura, Kazuo Ootsuka, Junta Izumi, Kenji Kimura, Toshihiro Katsuda, Kohei Matsuura, Takayuki Ban
  • Patent number: 11196252
    Abstract: A power supply system includes a plurality of sweep modules. Each sweep module includes a battery module, an input and output circuit, a switching element, a capacitor, and a line. The input and output circuit connects the battery module to a main line. The switching element switches between connection and disconnection between the battery module and the main line. The capacitor is attached in parallel to the battery module. The line connects the input and output circuit to the battery module. The line is maintained in a state in which a loop portion is formed.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: December 7, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Juni Yasoshima, Junta Izumi, Kenji Kimura, Toshihiro Katsuda, Kohei Matsuura, Junichi Matsumoto, Shuji Tomura, Shigeaki Goto, Naoki Yanagizawa, Kyosuke Tanemura, Kazuo Ootsuka, Takayuki Ban, Hironobu Nishi
  • Patent number: 11139682
    Abstract: A control device of a power supply system is configured to control inputting of electric power from a power system connected to a power distribution device to a plurality of strings connected to the power distribution device and outputting of electric power from the plurality of strings to the power system and to execute a process of stopping control for switching the at least one switching element between connection and disconnection on a string in which inputting of electric power and outputting of electric power are stopped out of the plurality of strings.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: October 5, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Juni Yasoshima, Junta Izumi, Kenji Kimura, Toshihiro Katsuda, Kohei Matsuura, Junichi Matsumoto, Shuji Tomura, Shigeaki Goto, Naoki Yanagizawa, Kyosuke Tanemura, Kazuo Ootsuka, Takayuki Ban, Hironobu Nishi
  • Patent number: 11101648
    Abstract: A power supply system includes a main line, a plurality of sweep modules, and a control unit. Each sweep module includes a battery module and a power circuit module. The power circuit module switches between connection and disconnection between the battery module and the main line. The control unit executes sweep control for sequentially switching the battery modules which are to be connected to the main line. The control unit maintains connection of a refreshing module which is to be subjected to refreshing charging/discharging to the main line while sweep control is being executed in a state in which the refreshing module is excluded in at least one of outputting of electric power to the outside and inputting of electric power from the outside.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: August 24, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Juni Yasoshima, Junta Izumi, Kenji Kimura, Toshihiro Katsuda, Kohei Matsuura, Junichi Matsumoto, Shuji Tomura, Shigeaki Goto, Naoki Yanagizawa, Kyosuke Tanemura, Kazuo Ootsuka, Takayuki Ban, Hironobu Nishi
  • Publication number: 20210249951
    Abstract: A power supply device includes battery circuit modules 10a, 10b, 10c, . . . each having a battery B, a first switching element S1 connected in parallel to the battery B, and a second switching element S2 connected in series to the battery B between the battery B and the first switching element S1, the second switching element S2 being turned off when the first switching element S1 is turned on, a battery circuit module group 100 in which the battery circuit modules 10a, 10b, 10c, . . . are connected in series, and a control circuit 11 for outputting, at intervals of a certain time, a gate signal for turning on and off the first switching element S1 and the second switching element S2 to the battery circuit modules 10a, 10b, 10c, . . . .
    Type: Application
    Filed: April 19, 2021
    Publication date: August 12, 2021
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Shigeaki GOTO, Keisuke ISHIKAWA, Shuji TOMURA, Naoki YANAGIZAWA
  • Patent number: 11052842
    Abstract: A vehicle control device includes: first and second power supplies, and a control unit controlling to, when a remaining capacity difference between the first power supply and the second power supply is large, to reduce a first operating range, in which the connection state with the electrical load is controlled to be series connection state of the power supplies, and increase a second operating range, in which the connection state with the electrical load is controlled to be the parallel connection state of the power supplies or the single connection state of one of the power supplies having a larger remaining capacity, as compared with a case where the remaining capacity difference is small.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: July 6, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoshitaka Niimi, Naoyoshi Takamatsu, Shunya Kobayashi, Satoru Ito, Takuya Sakamoto, Hirotsugu Ohata, Shigeaki Goto, Shuji Tomura, Naoki Yanagizawa
  • Publication number: 20210203178
    Abstract: A power supply system includes a plurality of battery modules and a control unit, and supplies electric power from the battery modules in an uppermost stage and a lowermost stage to a load. The control unit is configured to perform ON/OFF control for setting the battery modules to an ON state in an active time, setting the battery modules to an OFF state in a non-active time, and alternately repeating the active time and the non-active time. The control unit is configured to delay an ON/OFF control timing for the battery module in a lower stage adjacent to the battery module in a higher stage by a control delay time in comparison with the battery module in the higher stage. The control unit is configured to randomly determine the control delay times for the battery modules in lower stages than the battery module in the uppermost stage.
    Type: Application
    Filed: September 4, 2020
    Publication date: July 1, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroshi Tsukada, Shuji Tomura, Kazuo Ootsuka, Naoki Yanagizawa, Kyosuke Tanemura, Junta Izumi, Kenji Kimura
  • Patent number: 11050247
    Abstract: The present teaching provides a power supply system capable of fully utilizing a plurality of batteries having different performances. A power supply system disclosed here includes a main line, a plurality of sweep modules, and a controller. Each of the sweep modules includes a battery module and an electric power circuit module. The electric power circuit module includes a switching device for connecting a connection state between the battery modules and the main line between connection and disconnection. The controller performs sweep control of sequentially switching the battery module connected to the main line among the plurality of battery modules. During an input of electric power from outside, the controller disconnects the battery module whose SOC level satisfies a high SOC condition from the main line (S7), and continues sweep control (S8, S9).
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: June 29, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Juni Yasoshima, Junta Izumi, Kenji Kimura, Toshihiro Katsuda, Kohei Matsuura, Junichi Matsumoto, Shuji Tomura, Shigeaki Goto, Naoki Yanagizawa, Kyosuke Tanemura, Kazuo Ootsuka, Takayuki Ban, Hironobu Nishi
  • Patent number: 11034258
    Abstract: A power supply of a vehicle includes a first switching element, a second switching element, a third switching element, a first battery, a reactor element, a second battery, a smoothing capacitor, and a controller. When the connection state of the first battery and the second battery is switched from the series connection state to the parallel connection state, the controller is configured to perform a transition control so that a voltage of the smoothing capacitor is decreased to the higher of a voltage of the first battery and a voltage of the second battery, and perform a switching control to turn on the first switching element after a diode of the first switching element is energized.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: June 15, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoshitaka Niimi, Naoyoshi Takamatsu, Shunya Kobayashi, Satoru Ito, Takuya Sakamoto, Hirotsugu Ohata, Naoki Yanagizawa, Shuji Tomura, Shigeaki Goto
  • Patent number: 11011982
    Abstract: A power supply device includes battery circuit modules each having a battery, a first switching element S1 connected in parallel to the battery, and a second switching element S2 connected in series to the battery between the battery and the first switching element S1, the second switching element S2 being turned off when the first switching element S1 is turned on, a battery circuit module group in which the battery circuit modules are connected in series, and a control circuit for outputting, at intervals of a certain time, a gate signal for turning on and off the first switching element S1 and the second switching element S2 to the battery circuit modules.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: May 18, 2021
    Assignee: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Shigeaki Goto, Keisuke Ishikawa, Shuji Tomura, Naoki Yanagizawa
  • Patent number: 10985606
    Abstract: A power supply system disclosed here is connected to an electric power system through a distribution device. The power supply system includes a plurality of strings connected to the distribution device and a failure detector. The failure detector of the power supply system is configured to perform a first process of connecting at least one battery module to a main line to set a voltage detected by a string voltage detector at a voltage higher than a predetermined voltage in a state where a switch disconnects the distribution device and the main line, a second process of sending a disconnecting signal for disconnecting all the sweep modules from the main line, and a third process of determining whether the voltage detected by the string voltage detector is lower than the predetermined determination voltage or not after the second process.
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: April 20, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Juni Yasoshima, Junta Izumi, Kenji Kimura, Toshihiro Katsuda, Kohei Matsuura, Junichi Matsumoto, Shuji Tomura, Shigeaki Goto, Naoki Yanagizawa, Kyosuke Tanemura, Kazuo Ootsuka, Takayuki Ban, Hironobu Nishi
  • Patent number: 10972006
    Abstract: A power supply device includes battery circuit modules each having a battery, a first switching element S1 connected in parallel to the battery, and a second switching element S2 connected in series to the battery between the battery and the first switching element S1, the second switching element S2 being turned off when the first switching element S1 is turned on, a battery circuit module group in which the battery circuit modules are connected in series, and a control circuit for outputting, at intervals of a certain time, a gate signal for turning on and off the first switching element S1 and the second switching element S2 to the battery circuit modules.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: April 6, 2021
    Assignee: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Shigeaki Goto, Keisuke Ishikawa, Shuji Tomura, Naoki Yanagizawa
  • Patent number: 10965150
    Abstract: The present teaching provides a power supply system capable of appropriately performing replacement or repairing of a component of a module where a problem occurs without stopping the entire operation, in a case where the problem occurs in of the module in a plurality of modules. The power supply system includes a plurality of sweep modules, a problem detector, an indicator, and a controller. Each sweep module includes a battery module and an electric power circuit module. The problem detector detects a problem for each sweep module. The indicator indicates a sweep module in which a problem is detected. In a case where a problem is detected in the sweep module (S4: YES), the controller causes the indicator to indicate a failure sweep module in which the problem is detected (S5). The controller disconnects the failure sweep module from a main line, and continues sweep control (S6 through S8).
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: March 30, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Juni Yasoshima, Junta Izumi, Kenji Kimura, Toshihiro Katsuda, Kohei Matsuura, Junichi Matsumoto, Shuji Tomura, Shigeaki Goto, Naoki Yanagizawa, Kyosuke Tanemura, Kazuo Ootsuka, Takayuki Ban, Hironobu Nishi
  • Patent number: 10944262
    Abstract: A control device of a power supply system includes a stopping process unit. The stopping process unit is configured to operate a switching element when connection between a power system and a main line is cut off by a system breaker and to perform a stopping process of sequentially switching battery modules which are connected to the main line such that the number of battery modules which are connected to the main line decreases gradually.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: March 9, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Juni Yasoshima, Junta Izumi, Kenji Kimura, Toshihiro Katsuda, Kohei Matsuura, Junichi Matsumoto, Shuji Tomura, Shigeaki Goto, Naoki Yanagizawa, Kyosuke Tanemura, Kazuo Ootsuka, Takayuki Ban, Hironobu Nishi