Patents by Inventor Kouji Higashimoto

Kouji Higashimoto 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).

  • Battery control device
    Patent number: 8583389
    Abstract: A plurality of resistance value tables of a battery group with respect to temperature and SOC of the assembled battery, which are measured in advance when currents of different change patterns flow in the assembled battery, are stored. A resistance value for the assembled battery is calculated, based upon its voltage and current. From among the plurality of resistance value tables, a resistance value table is selected so that it corresponds to the change pattern of the current flowing in the assembled battery when the voltage and the current of the assembled battery were measured, and a resistance value is searched for from that resistance value table corresponding to the temperature and the SOC of the assembled battery. Then the calculated resistance value and the one from the table are compared to determine the life of the assembled battery.
    Type: Grant
    Filed: January 12, 2010
    Date of Patent: November 12, 2013
    Assignees: Hitachi Vehicle Energy, Ltd., Hitachi, Ltd.
    Inventors: Yoshinori Aoshima, Masahiro Ueda, Youhei Kawahara, Kouji Higashimoto
  • Battery Control Device
    Publication number: 20100185405
    Abstract: A plurality of resistance value tables of a battery group with respect to temperature and SOC of the assembled battery, which are measured in advance when currents of different change patterns flow in the assembled battery, are stored. A resistance value for the assembled battery is calculated, based upon its voltage and current. From among the plurality of resistance value tables, a resistance value table is selected so that it corresponds to the change pattern of the current flowing in the assembled battery when the voltage and the current of the assembled battery were measured, and a resistance value is searched for from that resistance value table corresponding to the temperature and the SOC of the assembled battery. Then the calculated resistance value and the one from the table are compared to determine the life of the assembled battery.
    Type: Application
    Filed: January 12, 2010
    Publication date: July 22, 2010
    Applicants: Hitachi Vehicle Energy, Ltd., Hitachi, Ltd.
    Inventors: Yoshinori AOSHIMA, Masahiro Ueda, Youhei Kawahara, Kouji Higashimoto