Patents by Inventor Koji Umetsu

Koji Umetsu 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: 11594903
    Abstract: A power storage system of the present technology includes a battery board configured to accommodate a secondary battery, a branch board, a first frame on which the battery board is placed, a second frame on which the branch board is placed, and a plurality of connection wirings that are disposed in the first frame and the second frame and connects the battery board and the branch board. The plurality of connection wirings are aggregated in the second frame.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: February 28, 2023
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Naoyuki Sugeno, Koji Umetsu
  • Patent number: 10916948
    Abstract: A power control apparatus has a switch configured to interrupt power supply from a system power when the switch has detected a drop of voltage from the system power below a threshold, a first power controller configured to receive a voltage drop signal supplied from the switch unit, a first power storage unit connected to the first power controller, a second power controller configured to receive a discharge start signal supplied from the first power controller, a second power storage unit connected to the second power controller, and a rotary machine generator that receives an operation control signal supplied from the second power controller or the second power storage unit.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: February 9, 2021
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Naoyuki Sugeno, Koji Umetsu
  • Publication number: 20200195027
    Abstract: A power storage system of the present technology includes a battery board configured to accommodate a secondary battery, a branch board, a first frame on which the battery board is placed, a second frame on which the branch board is placed, and a plurality of connection wirings that are disposed in the first frame and the second frame and connects the battery board and the branch board. The plurality of connection wirings are aggregated in the second frame.
    Type: Application
    Filed: February 21, 2020
    Publication date: June 18, 2020
    Inventors: Naoyuki SUGENO, Koji UMETSU
  • Patent number: 10587127
    Abstract: There is provided a charging device including a charging voltage providing unit configured to provide a maximum charging voltage for an electricity storage unit, wherein the electricity storage unit includes a plurality of battery cells, and wherein the maximum charging voltage satisfies an equation (1) below: Maximum Charging Voltage=Total Battery Voltage+(Fully Charged Voltage?Maximum Cell Voltage)*n (1) wherein n represents a total number of the battery cells connected in series.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: March 10, 2020
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Naoyuki Sugeno, Hisato Asai, Eiji Kumagai, Noritoshi Imamura, Koji Umetsu
  • Publication number: 20200076231
    Abstract: A power control apparatus has a switch configured to interrupt power supply from a system power when the switch has detected a drop of voltage from the system power below a threshold, a first power controller configured to receive a voltage drop signal supplied from the switch unit, a first power storage unit connected to the first power controller, a second power controller configured to receive a discharge start signal supplied from the first power controller, a second power storage unit connected to the second power controller, and a rotary machine generator that receives an operation control signal supplied from the second power controller or the second power storage unit.
    Type: Application
    Filed: November 8, 2019
    Publication date: March 5, 2020
    Inventors: Naoyuki SUGENO, Koji UMETSU
  • Patent number: 10523027
    Abstract: Provided is a power supply apparatus including a power storage module, a DC-AC inverter, a bypass circuit, and a controller. The DC-AC inverter converts output of the power storage module into AC power. The bypass circuit directly transmits the AC power. The controller switches between a discharge mode for supplying output of the DC-AC inverter to a load, and a bypass mode for supplying output of the bypass circuit to the load. A threshold for switching between the discharge mode and the bypass mode is set to a range that enables the power storage module to provide output in an overload state.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: December 31, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Naoyuki Sugeno, Hiroaki Yoshida, Kazumi Sato, Koji Umetsu
  • Patent number: 10361575
    Abstract: A power storage apparatus includes a plurality of power storage modules connected in series and a control apparatus that controls each power storage module. The power storage module includes a battery section, a controller, a communication unit, a first insulator that insulates the controller from the communication unit, and a second insulator having a withstand voltage higher than a withstand voltage of the first insulator. The second insulator is provided between the communication unit of each power storage module and the control apparatus.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: July 23, 2019
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Naoyuki Sugeno, Koji Umetsu, Noritoshi Imamura, Hiroaki Ono, Kazumi Sato, Atsushi Ozawa
  • Patent number: 10164298
    Abstract: A storage device includes a storage unit, and an evaluation value acquisition unit wherein the evaluation value acquisition unit is configured to acquire an evaluation value including at least a first evaluation value corresponding to the storage unit in a low-temperature region and a second evaluation value corresponding to the storage unit in a high-temperature region.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: December 25, 2018
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Naoyuki Sugeno, Yoshihiro Odashima, Kazumi Sato, Masumi Terauchi, Naruhiko Endo, Toshio Tajima, Koji Umetsu
  • Patent number: 10069311
    Abstract: A power storage device includes: power storage units each including at least one battery, the power storage units being connected in series; cell balance units connected in parallel to the respective power storage units via switches; and a control unit that performs control to charge the power storage units with a first constant current value, and, when the power storage unit having the highest voltage among the power storage units reaches a first potential, connect the corresponding one of the cell balance units to the power storage unit having the highest voltage, and switch the charging current to a second constant current value that is smaller than the first constant current value.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: September 4, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Naoyuki Sugeno, Kohki Watanabe, Masumi Terauchi, Shuichi Takizawa, Noritoshi Imamura, Koji Umetsu
  • Patent number: 10056773
    Abstract: A battery package including a power storage portion; and a control device, where the control device determines if a first temperature of the power storage portion is higher than a predetermined temperature, and if the first temperature is higher than the predetermined temperature, discharges the power storage portion at a first discharge rate.
    Type: Grant
    Filed: October 7, 2013
    Date of Patent: August 21, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Naoyuki Sugeno, Kohki Watanabe, Shuichi Takizawa, Kenji Sato, Koji Umetsu
  • Patent number: 10020662
    Abstract: A battery system includes a plurality of electronic storage modules serially connected together wherein the electronic storage modules include a battery block group including a plurality of battery cells, and a different magnetic core connected to each battery block group.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: July 10, 2018
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Yoshihiro Komatsu, Hidekazu Kikuchi, Koji Umetsu
  • Patent number: 10008862
    Abstract: There is provided a power storage device including a plurality of modules each including secondary batteries, a charging switch that controls charging to the secondary batteries, a discharging switch that controls discharging of the secondary batteries, and a voltage measuring unit that measures a voltage of the module, and a switch control unit that controls one or both of the charging switch and the discharging switch. The modules are connected in parallel. The switch control unit maintains an on state of the discharging switch for at least one of the modules for a predetermined period, and controls the charging switch of the module in which a maximum module charging current estimated based on the voltage of the module is a predetermined value or less, to be in an on state.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: June 26, 2018
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Shuichi Takizawa, Naoyuki Sugeno, Koji Umetsu, Eiji Kumagai, Bunya Sato, Aniket Khade, Tatsuya Adachi, Atsushi Chinen, Hisato Asai, Kohki Watanabe
  • Patent number: 9952287
    Abstract: A monitoring apparatus includes a first converter that converts first analog data indicating a voltage value of each of batteries into first digital data; and a second converter that converts second analog data indicating an electric current value flowing through the plurality of batteries into second digital data. The first analog data and the second analog data are data having the same timing.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: April 24, 2018
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Naoyuki Sugeno, Morihiko Sato, Koji Umetsu
  • Patent number: 9878634
    Abstract: A power reserve apparatus is disclosed. In one embodiment, the power reserve apparatus comprises a first module including a first set of battery cells and a first inter-cell balance adjustment unit configured to use passive balancing to reduce voltage variance among the first set of battery cells. The power reserve apparatus also comprises a second module including a second set of battery cells and a second inter-cell balance adjustment unit configured to use passive balancing to reduce voltage variance among the second set of battery cells. The power reserve apparatus further comprises an inter-module balance adjustment unit configured to use active balancing to reduce voltage variance among the first and second modules.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: January 30, 2018
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Naoyuki Sugeno, Morihiko Sato, Koji Umetsu
  • Publication number: 20170373520
    Abstract: A power storage apparatus includes a plurality of power storage modules connected in series and a control apparatus that controls each power storage module. The power storage module includes a battery section, a controller, a communication unit, a first insulator that insulates the controller from the communication unit, and a second insulator having a withstand voltage higher than a withstand voltage of the first insulator. The second insulator is provided between the communication unit of each power storage module and the control apparatus.
    Type: Application
    Filed: December 21, 2015
    Publication date: December 28, 2017
    Inventors: Naoyuki SUGENO, Koji UMETSU, Noritoshi IMAMURA, Hiroaki Ono, Kazumi SATO, Atsushi OZAWA
  • Publication number: 20170264111
    Abstract: A battery system includes a plurality of electronic storage modules serially connected together wherein the electronic storage modules include a battery block group including a plurality of battery cells, and a different magnetic core connected to each battery block group.
    Type: Application
    Filed: May 30, 2017
    Publication date: September 14, 2017
    Inventors: Yoshihiro KOMATSU, Hidekazu KIKUCHI, Koji UMETSU
  • Patent number: 9728821
    Abstract: A power storage apparatus, electric device, electric vehicle, and power system are disclosed. In an example embodiment, a power storage apparatus includes a battery block comprising a plurality of battery cells and an isolating unit that enables wireless information transfer regarding battery information of the battery block.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: August 8, 2017
    Assignee: SONY CORPORATION
    Inventors: Yoshihiro Komatsu, Hidekazu Kikuchi, Koji Umetsu, Naoyuki Sugeno, Morihiko Sato
  • Patent number: 9705341
    Abstract: A battery system includes a plurality of electronic storage modules serially connected together. Each electronic storage module includes a battery block group including a plurality of battery cells, and a different magnetic core connected to each battery block group. An electronic device, an electric vehicle and electric power system including the battery system are also provided.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: July 11, 2017
    Assignee: Sony Corporation
    Inventors: Yoshihiro Komatsu, Hidekazu Kikuchi, Koji Umetsu
  • Patent number: 9669723
    Abstract: An electronic storage module includes a plurality of batteries, a primary monitoring circuit configured to detect an operating state of the plurality of batteries, a microcontroller unit connected to the primary monitoring circuit via a primary communication path, and a secondary monitoring circuit connected to the microcontroller unit via a secondary communication path. The secondary monitoring circuit is configured to detect the operating state of the plurality of batteries when a determination is made of an abnormality in the primary communication path, or an abnormality in the operating state of the primary monitoring circuit.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: June 6, 2017
    Assignee: SONY CORPORATION
    Inventors: Naoyuki Sugeno, Morihiko Sato, Koji Umetsu
  • Publication number: 20170144565
    Abstract: A power reserve apparatus is disclosed. In one embodiment, the power reserve apparatus comprises a first module including a first set of battery cells and a first inter-cell balance adjustment unit configured to use passive balancing to reduce voltage variance among the first set of battery cells. The power reserve apparatus also comprises a second module including a second set of battery cells and a second inter-cell balance adjustment unit configured to use passive balancing to reduce voltage variance among the second set of battery cells. The power reserve apparatus further comprises an inter-module balance adjustment unit configured to use active balancing to reduce voltage variance among the first and second modules.
    Type: Application
    Filed: January 23, 2017
    Publication date: May 25, 2017
    Inventors: Naoyuki SUGENO, Morihiko SATO, Koji UMETSU