Patents by Inventor Masami Shida

Masami Shida 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: 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
  • 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: 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: 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: 6321734
    Abstract: In order to provide a resin sealed electronic device which is capable of securing high reliability by packaging with a transfer molding resin without using any under filler material, a resin sealed electronic device mounts a flip chip type monolithic IC on a hybrid circuit board through bumps and is packaged with a thermosetting resin through transfer molding. The transfer molding resin has a linear expansion coefficient of 3×10−6 to 17×10−6 and contains a filler having a particle size smaller than a height of the bump by more than 10 &mgr;m. The resin sealed electronic device is integrated in a unit including the hybrid circuit board mounting the flip chip type monolithic IC through transfer molding with the transfer molding resin, and the bump is restrained from moving by the transfer molding resin flowing around at transfer-molding.
    Type: Grant
    Filed: April 6, 2000
    Date of Patent: November 27, 2001
    Assignees: Hitachi, Ltd., Hitachi Car Engineering Co., Ltd.
    Inventors: Toshiaki Kaminaga, Masami Shida, Noboru Sugiura, Ryoichi Kobayashi, Katsuaki Fukatsu
  • Patent number: 6014604
    Abstract: The object of this invention is to reduce shift shocks by controlling the driving torque during gear shift changing so that the driving torque is represented by a smooth, ideal waveform.The driving torque calculating means estimates the output shaft torque of the automatic transmission from the engine torque characteristic or torque converter characteristic and, based on the estimated driving torque, generate a targeted torque pattern during gear shift changing. The engine torque control value calculating means calculates the control value for controlling the engine output torque, i.e., an ignition timing correction value .DELTA..theta.ig, so as to eliminate the deviation between the targeted torque and the driving torque estimated by the driving torque calculating means. This ignition timing correction approximates the driving torque to the smooth targeted torque. This configuration realizes the object mentioned above.
    Type: Grant
    Filed: October 13, 1998
    Date of Patent: January 11, 2000
    Assignee: Hitachi, Ltd. & Hitachi Car Engineering Co., Ltd.
    Inventors: Hiroshi Kuroiwa, Masahiko Ibamoto, Kazuhiko Sato, Mitsuyoshi Okada, Masami Shida
  • Patent number: 5826208
    Abstract: The object of this invention is to reduce shift shocks by controlling the driving torque during gear shift changing so that the driving torque is represented by a smooth, ideal waveform. The driving torque calculating means estimates the output shaft torque of the automatic transmission from the engine torque characteristic or torque converter characteristic and, based on the estimated driving torque, generate a targeted torque pattern during gear shift changing. The engine torque control value calculating means calculates the control value for controlling the engine output torque, i.e., an ignition timing correction value .DELTA..theta.ig, so as to eliminate the deviation between the targeted torque and the driving torque estimated by the driving torque calculating means. This ignition timing correction approximates the driving torque to smooth the targeted torque.
    Type: Grant
    Filed: October 26, 1995
    Date of Patent: October 20, 1998
    Assignees: Hitachi, Ltd., Hitachi Car Engineering Co., Ltd.
    Inventors: Hiroshi Kuroiwa, Masahiko Ibamoto, Kazuhiko Sato, Mitsuyoshi Okada, Masami Shida
  • Patent number: 5816976
    Abstract: Disclosed is a driving torque control device for a vehicle comprising the elements. The device can effectively suppress fluctuation of engine torque. (1) Means for calculating a torque control timing to determine and output at least two control timings of an engine torque generated by an engine during speed shifting. (2) Means for calculating and outputting an engine torque control quantity in response to the output from said torque control timing calculating means to calculate and output the engine torque control quantity (3) Means for controlling the engine torque during speed shifting in response to the outputs from said engine torque control quantity calculating means.The engine torque is reduced by a certain quantity at a first timing of said engine torque control timings, followed by increasing the engine torque at the second engine torque control timing, and then returning the engine torque to the engine torque of the time immediately before the first engine torque control timing.
    Type: Grant
    Filed: December 7, 1995
    Date of Patent: October 6, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Hiroshi Kuroiwa, Seiji Suda, Masami Shida, Masahide Sakamoto
  • Patent number: 5021960
    Abstract: A combustion fault detection apparatus for an internal combustion engine, in which a cylinder signal is generated when the piston in each cylinder of the engine is located at a predetermined position, a time interval between cylinder signal is determined, and time intervals for respective cylinders are compared and computed thereby to detect when a combustion fault, if any, has occurred in a specific cylinder.
    Type: Grant
    Filed: August 4, 1989
    Date of Patent: June 4, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Toshio Manaka, Masami Shida
  • Patent number: 4995366
    Abstract: An estimating execution for an inner surface portion adhesion fuel amount is practiced distinctlly and independently to an execution processing for a basic fuel injection amount. A correction coefficient to be multiplied by the basic fuel injection amount is calculated in accordance with the estimation execution for the inner wall surface portion adhesion fuel amount. The correction coefficient is multiplied by the basic fuel injection amount. Since the fuel injection amount is corrected in accordance with the estimated inner surface portion adhesion fuel amount, an air-fuel ratio during a transitional period of an engine can be maintained at a desirable value.
    Type: Grant
    Filed: September 8, 1989
    Date of Patent: February 26, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Toshio Manaka, Masami Shida
  • Patent number: 4984167
    Abstract: In a control apparatus for an internal combustion engine for receiving outputs of a crank angle sensor, air flow sensor, etc., calculating control values from these outputs using a microcomputer to actuate actuators; calculated timings at which the respective actuators are deactuated are compared in advance with each other, the control value for the actuator which should be deactuated earliest is stored in an output compare register, and a deactuation signal for the actuator is generated with count matching of two inputs to a comparator of the output compare register. Thus the respective actuators are sequentially controlled.
    Type: Grant
    Filed: February 3, 1989
    Date of Patent: January 8, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Matsuo Amano, Masami Shida
  • Patent number: 4953530
    Abstract: A control unit has a fuel supply controller and a throttle valve opening degree controller. The fuel supply amount controller estimates and calculates the amount of fuel being supplied in cylinders with a real time. The throttle valve opening degree controller calculates a necessary opening degree so as to give a predetermined air-fuel ratio in accordance with a result value by the fuel supply amount controller. The fuel supply amount controller has a processing in which a fuel supply amount is corrected in accordance with an increase or decrease rate of an amount of fuel being adhered to an inner wall surface of an intake pipe. The throttle valve opening degree is controlled in accordance with a value obtained from the throttle valve opening degree controller as a control target value. A time lag in a follow-up for fuel is anticipated in advance, a desirable target air-fuel ratio is maintained correctly and easily.
    Type: Grant
    Filed: July 6, 1989
    Date of Patent: September 4, 1990
    Assignee: Hitachi, Ltd.
    Inventors: Toshio Manaka, Masami Shida
  • Patent number: 4939658
    Abstract: The fuel injection quantity required for maintaining the air-fuel ratio of the mixture supplied to each cylinder of an engine at a desired value is determined by a deposition rate X at which injected fuel deposits and forms a film mass on an intake manifold wall of the engine and a vaporization rate 1/.tau. at which the film mass vaporizes from the manifold wall, a current film mass quantity M.sub.f determined from the calculated X and l/.tau. and the fuel quantity by the preceding injection, a desired fuel quantity Q.sub.a /(A/F) to be supplied air-fuel ratio A/F in accordance with the following equation ##EQU1## an air-fuel ratio feedback correction factor .gamma. aiming at a stoichiometric air-fuel ratio based on a signal generated by an O.sub.2 sensor is calculated and an actual quantity of fuel corresponding to G.sub.f .multidot..gamma. is injected. A film mass quantity in a current computing cycle is based on the film mass quantity calculated during the previous computing cycle.
    Type: Grant
    Filed: August 19, 1988
    Date of Patent: July 3, 1990
    Assignee: Hitachi, Ltd.
    Inventors: Teruji Sekozawa, Makoto Shioya, Motohisa Funabashi, Mikihiko Onari, Masami Shida
  • Patent number: RE33890
    Abstract: A method of controlling fuel injection to an internal combustion engine by electronic circuits. A plurality of cylinders installed in the internal combustion engine are divided into two groups and two electronic circuits for controlling the respective two cylinder groups are provided. By comparing between the outputs of the two electronic circuits, whether the operations of the respective electronic circuits are normal or not is judged. The fuel injection controlled by the electronic circuit which has been judged to be abnormal is stopped, while the fuel injection controlled by the electronic circuit which has been judged to be normal is continued. Thus, the internal combustion engine is driven solely by one group of cylinders.
    Type: Grant
    Filed: October 6, 1989
    Date of Patent: April 21, 1992
    Assignee: Hitachi, Ltd.
    Inventors: Mikihiko Ohnari, Motohisa Funabashi, Makoto Shioya, Teruji Sekozawa, Masami Shida