Patents by Inventor Shuko Yamauchi

Shuko Yamauchi 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: 10193190
    Abstract: A battery control system is provided with a plurality of battery cell management devices that are provided respectively corresponding to a plurality of battery cell groups each constituted by one or a plurality of battery cells and each acquire a measurement result of the state of charge of the battery cell of the corresponding battery cell group and an assembled battery management device for wirelessly communicating with the battery cell management devices. When it is impossible to wirelessly communicate with any of the battery cell management devices, the assembled battery management device wirelessly communicates with the said any of the battery cell management devices via any of other battery cell management devices except the said any of the battery cell management devices.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: January 29, 2019
    Assignee: HITACHI, LTD.
    Inventors: Takanori Yamazoe, Shuko Yamauchi
  • Publication number: 20160294019
    Abstract: A battery system includes: a battery cell group composed of one or more battery cells; a battery cell management device that is provided corresponding to each battery cell group and acquires a measurement result concerning a charge state of each battery cell of the battery cell group; and a battery pack management device that performs radio communication with the battery cell management device. In the radio communication, a plurality of radio frequencies can be used.
    Type: Application
    Filed: December 16, 2013
    Publication date: October 6, 2016
    Applicant: HITACHI, LTD.
    Inventors: Shuko YAMAUCHI, Takanori YAMAZOE
  • Publication number: 20160268642
    Abstract: A battery control system is provided with a plurality of battery cell management devices that are provided respectively corresponding to a plurality of battery cell groups each constituted by one or a plurality of battery cells and each acquire a measurement result of the state of charge of the battery cell of the corresponding battery cell group and an assembled battery management device for wirelessly communicating with the battery cell management devices. When it is impossible to wirelessly communicate with any of the battery cell management devices, the assembled battery management device wirelessly communicates with the said any of the battery cell management devices via any of other battery cell management devices except the said any of the battery cell management devices.
    Type: Application
    Filed: November 1, 2013
    Publication date: September 15, 2016
    Applicant: HITACHI, LTD.
    Inventors: Takanori YAMAZOE, Shuko YAMAUCHI
  • Patent number: 9397374
    Abstract: A secondary battery module includes a battery information storage unit for storing electric characteristic information and usage history information of the secondary battery module. A battery information management device and a terminal device respectively include interfaces to be connected to the secondary battery module. The battery information management device is provided with a battery information database. The battery information management device is connected to the terminal device through a communications network. In this way, battery information stored in the battery information storage unit, which is acquired by the battery information management device and the terminal device, is accumulated in the battery information database. Moreover, the battery information management device grades the secondary battery module for reuse based on the battery information and a predetermined threshold.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: July 19, 2016
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Shuko Yamauchi, Youhei Kawahara, Akihiko Emori
  • Publication number: 20130018610
    Abstract: A secondary battery module includes a battery information storage unit for storing electric characteristic information and usage history information of the secondary battery module. A battery information management device and a terminal device respectively include interfaces to be connected to the secondary battery module. The battery information management device is provided with a battery information database. The battery information management device is connected to the terminal device through a communications network. In this way, battery information stored in the battery information storage unit, which is acquired by the battery information management device and the terminal device, is accumulated in the battery information database. Moreover, the battery information management device grades the secondary battery module for reuse based on the battery information and a predetermined threshold.
    Type: Application
    Filed: September 14, 2012
    Publication date: January 17, 2013
    Inventors: Shuko YAMAUCHI, Youhei Kawahara, Akihiko Emori
  • Patent number: 8299757
    Abstract: A secondary battery module includes a battery information storage unit for storing electric characteristic information and usage history information of the secondary battery module. A battery information management device and a terminal device respectively include interfaces to be connected to the secondary battery module. The battery information management device is provided with a battery information database. The battery information management device is connected to the terminal device through a communications network. In this way, battery information stored in the battery information storage unit, which is acquired by the battery information management device and the terminal device, is accumulated in the battery information database. Moreover, the battery information management device grades the secondary battery module for reuse based on the battery information and a predetermined threshold.
    Type: Grant
    Filed: April 8, 2010
    Date of Patent: October 30, 2012
    Assignee: Hitachi Vehicle Energy, Ltd.
    Inventors: Shuko Yamauchi, Youhei Kawahara, Akihiko Emori
  • Patent number: 8054045
    Abstract: In a status detector for a power supply, a power supply, and an initial characteristic extracting device for use with the power supply, a measuring unit obtains measured values of at least current, voltage and temperature of the electricity accumulating unit. A processing unit executes status detection of the electricity accumulating unit by using the measured values and the characteristic information of the electricity accumulating unit which is stored in a memory unit. A discrepancy detecting unit detects the presence of a discrepancy away from a theoretical value when a result of the status detection is changed over a predetermined threshold or reversed with respect to the measured values. A modifying unit modifies the characteristic information depending on the detected discrepancy.
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: November 8, 2011
    Assignee: Hitachi Vehicle Energy, Ltd.
    Inventors: Youhei Kawahara, Akihiko Emori, Shuko Yamauchi, Hirotaka Takahashi, Masami Shida, Akihiko Kudo
  • Patent number: 8004239
    Abstract: A battery management system which can output a battery state enabling optimum charge and discharge control to be performed even when a temperature variation occurs among individual single cells. A plurality of temperature sensors measure temperature values of a battery. A measurement unit measures a voltage and a current of the battery. A maximum/minimum temperature selection unit in a calculation unit determines a maximum temperature and a minimum temperature from the temperature values measured by the temperature sensors. An available power calculation unit calculates respective values of maximum available charge and discharge powers or maximum available charge and discharge currents of the battery corresponding to the maximum temperature and the minimum temperature based on the voltage and the current of the battery.
    Type: Grant
    Filed: March 9, 2009
    Date of Patent: August 23, 2011
    Assignee: Hitachi Vehicle Energy, Ltd.
    Inventors: Youhei Kawahara, Akihiko Emori, Shuko Yamauchi, Hirotaka Takahashi, Masami Shida, Yoshinori Aoshima
  • Publication number: 20100188039
    Abstract: A secondary battery module includes a battery information storage unit for storing electric characteristic information and usage history information of the secondary battery module. A battery information management device and a terminal device respectively include interfaces to be connected to the secondary battery module. The battery information management device is provided with a battery information database. The battery information management device is connected to the terminal device through a communications network. In this way, battery information stored in the battery information storage unit, which is acquired by the battery information management device and the terminal device, is accumulated in the battery information database. Moreover, the battery information management device grades the secondary battery module for reuse based on the battery information and a predetermined threshold.
    Type: Application
    Filed: April 8, 2010
    Publication date: July 29, 2010
    Inventors: Shuko YAMAUCHI, Youhei KAWAHARA, Akihiko EMORI
  • Patent number: 7755331
    Abstract: A storage battery managing apparatus which ensures charge-discharge control of a storage battery in consideration of state variation of each unit cell even if the battery pack includes a number of component unit cells, and a vehicle controlling apparatus providing the same. A storage battery includes a plurality of chargeable-dischargeable unit cells connected in which battery management ICs detect the cell voltage of each unit cell, a voltage sensor detects a storage battery voltage and a current sensor detects currents to be charged and discharged in the storage battery. A degree of SOC imbalance is obtained by use of detected cell voltage of each unit cell when the storage battery is being neither charged nor discharged.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: July 13, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Youhei Kawahara, Akihiko Emori, Shuko Yamauchi, Hirotaka Takahashi, Masami Shida, Yoshinori Aoshima
  • Patent number: 7710073
    Abstract: A secondary battery module includes a battery information storage unit for storing electric characteristic information and usage history information of the secondary battery module. A battery information management device and a terminal device respectively include interfaces to be connected to the secondary battery module. The battery information management device is provided with a battery information database. The battery information management device is connected to the terminal device through a communications network. In this way, battery information stored in the battery information storage unit, which is acquired by the battery information management device and the terminal device, is accumulated in the battery information database. Moreover, the battery information management device grades the secondary battery module for reuse based on the battery information and a predetermined threshold.
    Type: Grant
    Filed: November 14, 2006
    Date of Patent: May 4, 2010
    Assignee: Hitachi Vehicle Energy, Ltd.
    Inventors: Shuko Yamauchi, Youhei Kawahara, Akihiko Emori
  • Publication number: 20100030499
    Abstract: In a status detector for a power supply, a power supply, and an initial characteristic extracting device for use with the power supply, a measuring unit obtains measured values of at least current, voltage and temperature of the electricity accumulating unit. A processing unit executes status detection of the electricity accumulating unit by using the measured values and the characteristic information of the electricity accumulating unit which is stored in a memory unit. A discrepancy detecting unit detects the presence of a discrepancy away from a theoretical value when a result of the status detection is changed over a predetermined threshold or reversed with respect to the measured values. A modifying unit modifies the characteristic information depending on the detected discrepancy.
    Type: Application
    Filed: October 13, 2009
    Publication date: February 4, 2010
    Applicant: Hitachi Vehicle Energy, Ltd.
    Inventors: Youhei KAWAHARA, Akihiko Emori, Shuko Yamauchi, Hirotaka Takahashi, Masami Shida, Akihiko Kudo
  • Patent number: 7622894
    Abstract: In a status detector for a power supply, a power supply, and an initial characteristic extracting device for use with the power supply, a measuring unit obtains measured values of at least current, voltage and temperature of the electricity accumulating unit. A processing unit executes status detection of the electricity accumulating unit by using the measured values and the characteristic information of the electricity accumulating unit which is stored in a memory unit. A discrepancy detecting unit detects the presence of a discrepancy away from a theoretical value when a result of the status detection is changed over a predetermined threshold or reversed with respect to the measured values. A modifying unit modifies the characteristic information depending on the detected discrepancy.
    Type: Grant
    Filed: February 6, 2006
    Date of Patent: November 24, 2009
    Assignee: Hitachi Vehicle Energy, Ltd.
    Inventors: Youhei Kawahara, Akihiko Emori, Shuko Yamauchi, Hirotaka Takahashi, Masami Shida, Akihiko Kudo
  • Publication number: 20090174369
    Abstract: A battery management system which can output a battery state enabling optimum charge and discharge control to be performed even when a temperature variation occurs among individual single cells. A plurality of temperature sensors measure temperature values of a battery. A measurement unit measures a voltage and a current of the battery. A maximum/minimum temperature selection unit in a calculation unit determines a maximum temperature and a minimum temperature from the temperature values measured by the temperature sensors. An available power calculation unit calculates respective values of maximum available charge and discharge powers or maximum available charge and discharge currents of the battery corresponding to the maximum temperature and the minimum temperature based on the voltage and the current of the battery.
    Type: Application
    Filed: March 9, 2009
    Publication date: July 9, 2009
    Applicant: Hitachi Vehicle Energy, Ltd.
    Inventors: Youhei KAWAHARA, Akihiko EMORI, Shuko YAMAUCHI, Hirotaka TAKAHASHI, Masami SHIDA, Yoshinori AOSHIMA
  • Patent number: 7514905
    Abstract: A battery management system which can output a battery state enabling optimum charge and discharge control to be performed even when a temperature variation occurs among individual single cells. A plurality of temperature sensors measure temperature values of a battery. A measurement unit measures a voltage and a current of the battery. A maximum/minimum temperature selection unit in a calculation unit determines a maximum temperature and a minimum temperature from the temperature values measured by the temperature sensors. An available power calculation unit calculates respective values of maximum available charge and discharge powers or maximum available charge and discharge currents of the battery corresponding to the maximum temperature and the minimum temperature based on the voltage and the current of the battery.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: April 7, 2009
    Assignee: Hitachi Vehicle Energy, Ltd.
    Inventors: Youhei Kawahara, Akihiko Emori, Shuko Yamauchi, Hirotaka Takahashi, Masami Shida, Yoshinori Aoshima
  • Publication number: 20080156551
    Abstract: An object of the present invention is to provide a storage battery managing apparatus that can ensure charge-discharge control of a storage battery in consideration of state variation of each unit cell even if the battery pack includes a number of component unit cells, and a vehicle controlling apparatus providing the same. A storage battery 110 includes a plurality of chargeable-dischargeable unit cells connected. Battery management ICs 122 detect the cell voltage of each unit cell. A voltage sensor 150 detects a storage battery voltage. A current sensor 140 detects currents to be charged and discharged in the storage battery. Processing means 132 obtains a degree of SOC imbalance by use of the cell voltage of each unit cell detected by the battery management ICs 122 when the storage battery is being neither charged nor discharged.
    Type: Application
    Filed: October 17, 2007
    Publication date: July 3, 2008
    Applicant: Hitachi, Ltd.
    Inventors: Youhei Kawahara, Akihiko Emori, Shuko Yamauchi, Hirotaka Takahashi, Masami Shida, Yoshinori Aoshima
  • Publication number: 20070145954
    Abstract: A battery management system which can output a battery state enabling optimum charge and discharge control to be performed even when a temperature variation occurs among individual single cells. A plurality of temperature sensors measure temperature values of a battery. A measurement unit measures a voltage and a current of the battery. A maximum/minimum temperature selection unit in a calculation unit determines a maximum temperature and a minimum temperature from the temperature values measured by the temperature sensors. An available power calculation unit calculates respective values of maximum available charge and discharge powers or maximum available charge and discharge currents of the battery corresponding to the maximum temperature and the minimum temperature based on the voltage and the current of the battery.
    Type: Application
    Filed: December 14, 2006
    Publication date: June 28, 2007
    Applicant: Hitachi Vehicle Energy, Ltd.
    Inventors: Youhei Kawahara, Akihiko Emori, Shuko Yamauchi, Hirotaka Takahashi, Masami Shida, Yoshinori Aoshima
  • Publication number: 20070108946
    Abstract: A secondary battery module includes a battery information storage unit for storing electric characteristic information and usage history information of the secondary battery module. A battery information management device and a terminal device respectively include interfaces to be connected to the secondary battery module. The battery information management device is provided with a battery information database. The battery information management device is connected to the terminal device through a communications network. In this way, battery information stored in the battery information storage unit, which is acquired by the battery information management device and the terminal device, is accumulated in the battery information database. Moreover, the battery information management device grades the secondary battery module for reuse based on the battery information and a predetermined threshold.
    Type: Application
    Filed: November 14, 2006
    Publication date: May 17, 2007
    Inventors: Shuko Yamauchi, Youhei Kawahara, Akihiko Emori
  • Publication number: 20060202857
    Abstract: A status detector for a power supply, a power supply, and an initial characteristic extracting device for use with the power supply, each of which can detect the status of an electricity accumulating unit with high accuracy by sequentially modifying characteristic information necessary for the status detection of the electricity accumulating unit. A measuring unit obtains measured values of at least current, voltage and temperature of the electricity accumulating unit. A processing unit executes status detection of the electricity accumulating unit by using the measured values and the characteristic information of the electricity accumulating unit which is stored in a memory unit. A discrepancy detecting unit detects the presence of a discrepancy away from a theoretical value when a result of the status detection obtained by the processing unit is changed over a predetermined threshold or reversed with respect to the measured values obtained by the measuring unit.
    Type: Application
    Filed: February 6, 2006
    Publication date: September 14, 2006
    Applicant: HITACHI VEHICLE ENERGY, LTD.
    Inventors: Youhei Kawahara, Akihiko Emori, Shuko Yamauchi, Hirotaka Takahashi, Masami Shida, Akihiko Kudo
  • Patent number: 6030726
    Abstract: A lithium secondary battery having a high energy density, a long life, a low cost, an improved safety and a high output density uses a high crystalline carbon or an amorphous carbon bearing fine particles of a metal which forms an alloy with lithium, and a metal which does not form any alloy with lithium, in the range of 5-10% by weight, as a material for the negative electrode thereof.
    Type: Grant
    Filed: June 5, 1997
    Date of Patent: February 29, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Seiji Takeuchi, Hidetoshi Honbo, Yasushi Muranaka, Shuko Yamauchi, Masanori Yoshikawa