Patents by Inventor Yoshinori Aoshima

Yoshinori Aoshima 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).

  • Publication number: 20120025769
    Abstract: A battery system for a vehicle is provided with discharge circuits (R1, 129A through 129D, 128A through 128D) that discharge battery cells (BC1 through BC4) via measurement lines of those battery cells (BC1 through BC4).
    Type: Application
    Filed: February 18, 2010
    Publication date: February 2, 2012
    Applicants: Hitachi Vehicle Energy, Ltd., Hitachi, LTD.
    Inventors: Mutsumi Kikuchi, Akihiko Kudo, Gosuke Shibahara, Yoshinori Aoshima, Kenji Kubo, Yasuo Uemura
  • Patent number: 8058842
    Abstract: A cell controller having excellent productivity is provided. A cell-con 80 has 12 ICs IC-1 to IC-12 mounted on a substrate, and these ICs detect voltages of respective cells constituting a cell pack, perform capacity adjustment on the respective cells, and are mounted two by two on rectangular longer sides of a rectangular continuous straight line L-L? defined on a substrate from the IC-1 on a highest potential side to the IC-12 on a lowest potential side continuously in order of potential differences of the corresponding cell packs. Distances between the rectangular shorter sides of the rectangular continuous straight line L-L? are the same. On the cell-con 80, between the IC-1 to IC-12 having different ground voltages, each of the ICs has signal output terminals connected to signal input terminals of a lower order IC respectively in an electrically non-insulated state.
    Type: Grant
    Filed: July 30, 2007
    Date of Patent: November 15, 2011
    Assignee: Hitachi Vehicle Energy, Ltd
    Inventors: Tsuyoshi Kai, Tunemi Aiba, Akihiko Kudo, Yoshinori Aoshima, Akihiko Emori
  • 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: 20110193413
    Abstract: A battery control device for a battery module includes a plurality of integrated circuits. Each integrated circuit includes: a constant voltage circuit that lowers a total voltage of a battery cell group corresponding to the integrated circuit to an integrated circuit internal voltage; a signal generation circuit that generates, based upon a first signal provided by a higher-order control circuit, a second signal assuming a wave height value different from a wave height value of the first signal and outputs the second signal; and a startup circuit that includes a first comparator assuming a first decision-making threshold value corresponding to the first signal and a second comparator assuming a second decision-making threshold value corresponding to the second signal, and starts up the constant voltage circuit in response to a change in an output from at least either the first comparator or the second comparator.
    Type: Application
    Filed: February 3, 2011
    Publication date: August 11, 2011
    Applicant: Hitachi Vehicle Energy, Ltd,
    Inventors: Akihiko KUDO, Mutsumi Kikuchi, Gosuke Shibahara, Akihiko Emori, Yasuo Uemura, Tatsumi Yamauchi, Kenji Kubo, Yoshinori Aoshima
  • Patent number: 7830126
    Abstract: When detecting an abnormality in some storage batteries, the hybrid vehicle control system separates the faulty storage batteries and leads the sound storage batteries to a high SOC.
    Type: Grant
    Filed: April 5, 2007
    Date of Patent: November 9, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Youhei Kawahara, Akihiko Emori, Manabu Jyou, Yoshinori Aoshima
  • Publication number: 20100264878
    Abstract: A vehicle battery control system includes: a battery module that is constituted with a plurality of cells that are connected in series; a cell controller that detects each voltage at the plurality of cells; and a battery control unit that detects a total voltage of the battery module based on a signal from a voltage sensor disposed between a contactor connected to the battery module and an inverter equipment connected to the contactor and calculates a battery state of the battery module based upon the detected total voltage. And the battery control unit calculates the battery state based upon a total value of voltages at the plurality of cells detected by the cell controller in place of the total voltage when the contactor is in an open state.
    Type: Application
    Filed: April 19, 2010
    Publication date: October 21, 2010
    Applicants: Hitachi, Ltd., Hitachi Vehicle Energy, Ltd.
    Inventors: Masahiro Ueda, Yoshinori Aoshima
  • Publication number: 20100244847
    Abstract: A battery monitoring system, comprises a battery state detection circuit that detects battery states of a plurality of battery cells that are connected in series, based on respective cell voltages of the plurality of battery cells, and a control circuit that monitors state of a battery cell, based on each cell voltage of the plurality of battery cells. The control circuit inputs pseudo voltage information to the battery state detection circuit, and thereby diagnoses whether or not the battery state detection circuit is operating normally.
    Type: Application
    Filed: February 25, 2010
    Publication date: September 30, 2010
    Applicants: Hitachi, Ltd., Hitachi Vehicle Energy, Ltd.
    Inventors: Akihiko Kudo, Mutsumi Kikuchi, Gosuke Shibahara, Akihiko Emori, Yasuo Uemura, Tatsumi Yamauchi, Kenji Kubo, Masahito Sonehara, Masahiko Amano, Yoshinori Aoshima
  • Publication number: 20100244886
    Abstract: A state detection device for power supply system comprises: a measurement unit that obtains current, voltage, and temperature at a chargeable and dischargeable power storage unit as measurement values; a storage unit that stores property information of the power storage unit; an arithmetic unit that uses different methods to calculate first and second states of charge for the power storage unit based upon the measurement values and the property information; a conflict detection unit that detects a conflict in an event that a difference between the first state of charge and the second state of charge is equal to or greater than a predetermined threshold; and a correction unit that corrects the property information during charging or discharging of the power storage unit in response to the conflict having been detected by the conflict detection unit.
    Type: Application
    Filed: March 30, 2010
    Publication date: September 30, 2010
    Applicants: Hitachi, Ltd., Hitachi Vehicle Energy, Ltd.,
    Inventors: Youhei KAWAHARA, Yoshinori Aoshima, Kenichiro Tsuru, Akihiko Kudo, Akihiko Emori, Tatsumi Yamauchi
  • 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
  • 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
  • Publication number: 20100136390
    Abstract: A battery storage system includes: a plurality of battery modules that are electrically connected in series and in parallel, each comprising a plurality of battery cells; a plurality of sensors provided to each of the plurality of battery modules, that output at least signals corresponding to voltage and current of the each of the battery modules; a plurality of first control devices each of which is provided to the each of the plurality of battery modules, and obtains a power that can be inputted and outputted to and from the each of the battery modules based upon the voltage and current obtained from the output signals of the sensors of the each of the battery modules; and a second control device that performs overall control of the plurality of first control devices, and if a fault of a sensor in any one of the plurality of battery modules has occurred, the second control device obtains a total power that can be inputted and outputted to and from the all of the battery modules, based upon powers each of wh
    Type: Application
    Filed: November 25, 2009
    Publication date: June 3, 2010
    Applicants: Hitachi, Ltd., Hitachi Vehicle Energy, Ltd.
    Inventors: Masahiro UEDA, Yoshinori AOSHIMA
  • 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: 20080050645
    Abstract: A cell controller having excellent productivity is provided. A cell-con 80 has 12 ICs IC-1 to IC-2 mounted on a substrate, and these ICs detect voltages of respective cells constituting a cell pack, perform capacity adjustment on the respective cells, and are mounted two by two on rectangular longer sides of a rectangular continuous straight line L-L? defined on a substrate from the IC-1 on a highest potential side to the IC-12 on a lowest potential side continuously in order of potential differences of the corresponding cell packs. Distances between the rectangular shorter sides of the rectangular continuous straight line L-L? are the same. On the cell-con 80, between the IC-1 to IC-12 having different ground voltages, each of the ICs has signal output terminals connected to signal input terminals of a lower order IC respectively in an electrically non-insulated state.
    Type: Application
    Filed: July 30, 2007
    Publication date: February 28, 2008
    Applicant: HITACHI VEHICLE ENERGY, LTD.
    Inventors: Tsuyoshi KAI, Tunemi AIBA, Akihiko KUDO, Yoshinori AOSHIMA, Akihiko EMORI
  • Publication number: 20070247106
    Abstract: When detecting an abnormality in some storage batteries, the hybrid vehicle control system separates the faulty storage batteries and leads the sound storage batteries to a high SOC.
    Type: Application
    Filed: April 5, 2007
    Publication date: October 25, 2007
    Applicant: Hitachi, Ltd.
    Inventors: Youhei Kawahara, Akihiko Emori, Manabu Jyou, 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
  • Patent number: 7133703
    Abstract: A small electronic device has a battery level detection unit for real-time detection of the current battery level and a communication unit for transmitting report data on a detected battery level to another small electronic device, such as a pocket PC device. The receiving small electronic device compares the data with data on its own battery level detected therein and displays the lower battery level data.
    Type: Grant
    Filed: March 18, 2004
    Date of Patent: November 7, 2006
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Yoshinori Aoshima, Kazuhiko Daido
  • Publication number: 20040185913
    Abstract: A small electronic device has a battery level detection unit for real-time detection of the current battery level and a communication unit for transmitting report data on a detected battery level to another small electronic device, such as a pocket PC device. The receiving small electronic device compares the data with data on its own battery level detected therein and displays the lower battery level data.
    Type: Application
    Filed: March 18, 2004
    Publication date: September 23, 2004
    Inventors: Yoshinori Aoshima, Kazuhiko Daido