Patents by Inventor Katsuhisa MICHINAGA

Katsuhisa MICHINAGA 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).

  • Management apparatus, energy storage apparatus, and energy storage system
    Patent number: 11411409
    Abstract: A management device 21 comprising a main control part 23 that, during charging of a plurality of power storage elements 41 connected in series, outputs a first pull-down signal to a converter 11 so as to lower a charging voltage when the cell voltage of any of the power storage elements 41 is equal to or greater than a first threshold value.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: August 9, 2022
    Assignee: GS Yuasa International Ltd.
    Inventors: Tomoshige Inoue, Katsuhisa Michinaga, Takatomo Yoshioka, Takashi Ikeda, Kota Seto
  • MANAGEMENT APPARATUS, ENERGY STORAGE APPARATUS, AND ENERGY STORAGE SYSTEM
    Publication number: 20200153255
    Abstract: A management device 21 comprising a main control part 23 that, during charging of a plurality of power storage elements 41 connected in series, outputs a first pull-down signal to a converter 11 so as to lower a charging voltage when the cell voltage of any of the power storage elements 41 is equal to or greater than a first threshold value.
    Type: Application
    Filed: April 27, 2018
    Publication date: May 14, 2020
    Inventors: Tomoshige INOUE, Katsuhisa MICHINAGA, Takatomo YOSHIOKA, Takashi IKEDA, Kota SETO
  • Energy storage apparatus, energy storage system, and method of determining state of energy storage apparatus
    Patent number: 10539626
    Abstract: An energy storage apparatus includes a plurality of energy storage devices connected in series, a voltage detection unit configured to detect voltage of each of the energy storage devices, and a monitoring unit configured to monitor the plurality of energy storage devices. The monitoring unit determines a state of the energy storage apparatus in accordance with average cell voltage or an average SOC of the plurality of energy storage devices and minimum cell voltage of the plurality of energy storage devices.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: January 21, 2020
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventors: Takatomo Yoshioka, Katsuhisa Michinaga, Takumi Kimura
  • ENERGY STORAGE APPARATUS, ENERGY STORAGE SYSTEM, AND METHOD OF DETERMINING STATE OF ENERGY STORAGE APPARATUS
    Publication number: 20180095137
    Abstract: An energy storage apparatus includes a plurality of energy storage devices connected in series, a voltage detection unit configured to detect voltage of each of the energy storage devices, and a monitoring unit configured to monitor the plurality of energy storage devices. The monitoring unit determines a state of the energy storage apparatus in accordance with average cell voltage or an average SOC of the plurality of energy storage devices and minimum cell voltage of the plurality of energy storage devices.
    Type: Application
    Filed: September 11, 2017
    Publication date: April 5, 2018
    Inventors: Takatomo Yoshioka, Katsuhisa Michinaga, Takumi Kimura
  • Energy storage unit connection information acquiring apparatus
    Patent number: 9404976
    Abstract: An energy storage unit connection information acquiring apparatus that acquires information for connecting a plurality of energy storage units in parallel, each energy storage unit including one or more energy storage elements connected in series, the connection information acquiring apparatus including: a connectable range acquiring unit that acquires a connectable range by determining the connectable range that is a range of energy storage units that can be connected in parallel among the plurality of energy storage units; and a charge/discharge information acquiring unit that acquires information for charging or discharging a connected energy storage unit group such that at least one energy storage unit outside the connectable range can be connected in parallel to the connected energy storage unit group that is composed of the energy storage units in the connectable range that are connected in parallel.
    Type: Grant
    Filed: January 22, 2014
    Date of Patent: August 2, 2016
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventors: Katsuhisa Michinaga, Takumi Kimura, Shigenori Kikuta, Kazuo Kawarabayashi, Nasa Tomozoe
  • ENERGY STORAGE UNIT CONNECTION INFORMATION ACQUIRING APPARATUS
    Publication number: 20140203812
    Abstract: An energy storage unit connection information acquiring apparatus that acquires information for connecting a plurality of energy storage units in parallel, each energy storage unit including one or more energy storage elements connected in series, the connection information acquiring apparatus including: a connectable range acquiring unit that acquires a connectable range by determining the connectable range that is a range of energy storage units that can be connected in parallel among the plurality of energy storage units; and a charge/discharge information acquiring unit that acquires information for charging or discharging a connected energy storage unit group such that at least one energy storage unit outside the connectable range can be connected in parallel to the connected energy storage unit group that is composed of the energy storage units in the connectable range that are connected in parallel.
    Type: Application
    Filed: January 22, 2014
    Publication date: July 24, 2014
    Applicant: GS Yuasa International Ltd.
    Inventors: Katsuhisa MICHINAGA, Takumi KIMURA, Shigenori KIKUTA, Kazuo KAWARABAYASHI, Nasa TOMOZOE