Patents by Inventor Ken Takeuchi

Ken Takeuchi 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: 20180320338
    Abstract: It is an object of the present invention to provide hybrid construction machinery in which a power storage apparatus can be warmed up quickly and a life of the power storage apparatus can be lengthened. The hybrid construction machinery includes: an electric motor assisting a prime mover in power and generating electric power; the power storage apparatus transferring electric power to and from the electric motor; a warm-up circuit circulating a warming medium in the vicinity of the power storage apparatus; and a control device controlling circulation of the warming medium in the warm-up circuit. The hybrid construction machinery is provided with on-board equipment state detection units that detect states of on-board equipment to estimate an output request for the power storage apparatus from the on-board equipment.
    Type: Application
    Filed: October 31, 2016
    Publication date: November 8, 2018
    Inventors: Tadashi OSAKA, Ken TAKEUCHI, Seiji ISHIDA
  • Patent number: 10060095
    Abstract: A hybrid work machine includes a controller and a temperature sensor that detects an electric storage device temperature. In a case where (Tp+Tc)?Te_min, the controller carries out a first comparison in which the controller compares a value of [(Tp+Tc)?Te_min] with a value of Ta_SOC, and the controller then selects a lower value of the first comparison. The controller then carries out a second comparison in which the controller compares the selected lower value of the first comparison with a value of [(Tp+Tc)?Te_max)]. The controller then sets a higher value of the second comparison as the torque of the assist motor Ta, wherein Tc is an accessory torque, Ta_SOC is an adjustment assist motor torque based on a current state of charge of the electric storage device, Ta is the torque of the assist motor, and Te_max is an engine maximum torque.
    Type: Grant
    Filed: February 3, 2015
    Date of Patent: August 28, 2018
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Shinya Imura, Masafumi Hita, Hiroaki Amano, Seiji Ishida, Ken Takeuchi, Itaru Naya, Chiaki Takahashi
  • Patent number: 9977733
    Abstract: When a data utilization ratio R which is a utilization ratio of sectors in one page is not lower than a threshold value Rth1 and when write data is not frequently-rewritten data, a flash memory is controlled such that the write data is stored into the flash memory. When the data utilization ratio R which is the utilization ratio of sectors in one page is lower than the threshold value Rth1 or when the write data is frequently-rewritten data although the data utilization ratio R is not lower than the threshold value Rth1, a ReRAM is controlled such that the write data is stored into the ReRAM. This suppresses deterioration of the flash memory.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: May 22, 2018
    Assignee: THE UNIVERSITY OF TOKYO
    Inventors: Ken Takeuchi, Kousuke Miyaji, Koh Johguchi, Hiroki Fujii
  • Patent number: 9947396
    Abstract: To improve a reading speed and a writing speed while preventing occurrence of disturbance in a resistance storage element, specifically, a nonvolatile storage device that has a memory having at least one nonvolatile resistance storage element and a control unit configured to write a high resistance state or a low resistance state to the resistance storage element, wherein the control unit applies a bias to the resistance storage element in a verification operation carried out after writing the high resistance state, or applies a bias to the resistance storage element in a verification operation carried out after writing the low resistance state, these biases being in directions opposite to each other.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: April 17, 2018
    Assignee: CHUO UNIVERSITY
    Inventors: Tomoko Iwasaki, Kosuke Miyaji, Ken Takeuchi
  • Patent number: 9896822
    Abstract: A hybrid construction machine which can improve temperature control efficiency of an electrical storage device. It includes an engine 1, an assisting electricity generation motor 2 which performs assistance of power for the engine 1 and electricity generation and an electrical storage device 8 which performs transfer of electric power with this assisting electricity generation motor 2. The electrical storage device 8 includes a plurality of battery cells 200, a housing 220 which covers the plurality of battery cells 200 in a state of leaving them separated, a cooling plate 203 which is attached to this housing 220 and performs heat exchange with the plurality of battery cells 200, and a projection 214 which is interposed between the housing 220 and the cooling plate 203 and hinders heat transfer between the housing 220 and the cooling plate 203.
    Type: Grant
    Filed: January 19, 2015
    Date of Patent: February 20, 2018
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Ryuji Kohno, Ken Takeuchi, Shigeyuki Yoshihara
  • Publication number: 20170291501
    Abstract: Provided is hybrid construction machine that can charge/discharge an electrical storage device appropriately and can suppress stop of an engine accompanying sharp increase of a load. The present invention includes a hybrid controller 22 that controls power of a hydraulic pump 17 and electric power of an inverter 15 in response to storage battery characteristics of the electrical storage device 16, and an output command unit 22F of the hybrid controller 22 is configured to control at least either one of the power of the hydraulic pump 17 and the electric power of the inverter 15 on the basis of at least either one of electric current or voltage of the storage battery characteristics and at least either one of temperature or a state of charge of the storage battery characteristics.
    Type: Application
    Filed: October 13, 2015
    Publication date: October 12, 2017
    Inventors: Chiaki TAKAHASHI, Shinya IMURA, Ken TAKEUCHI, Seiji ISHIDA, Itaru NAYA, Masafumi HITA
  • Publication number: 20170284062
    Abstract: The object of the present invention is to provide a hybrid construction machine that can quickly warm up an electrical storage device and can improve the service life of the electrical storage device. This hybrid construction machine is equipped with: a prime mover (1); an electric motor that supplements the power of the prime mover (1) and generates electric power; an electrical storage device (8) that transmits power to and receives power from the electric motor; a warm-up circuit (25) that circulates a heating medium heated by waste heat from the prime mover (1) or the electric motor, or by a heater (40), to the vicinity of the electrical storage device (8); a control device that controls charging/discharging of the electrical storage device (8) and circulation of the heating medium of the warm-up circuit (25); and an outside air temperature measurement device that measures the outside air temperature.
    Type: Application
    Filed: February 29, 2016
    Publication date: October 5, 2017
    Inventors: Tadashi OSAKA, Ken TAKEUCHI, Akira WATANABE
  • Publication number: 20170274891
    Abstract: A motor generator (27) is connected mechanically to an engine (21) and a hydraulic pump (23). The hydraulic pump (23) delivers pressurized oil to cylinders (11D) to (11F) in a working mechanism (11), a traveling hydraulic motor (25) and a revolving hydraulic motor (26). The revolving hydraulic motor (26) drives a revolving device (3) in cooperation with a revolving electric motor (33). The motor generator (27) and the revolving electric motor (33) are connected electrically to an electricity storage device (31). An HCU (36) sets a target electricity storage rate (SOC0) of the electricity storage device (31) and a pump output limit (POL0) of the hydraulic pump (23) corresponding to a mode selected by a mode selection device (38). The HCU (36) controls the engine (21), the motor generator (27), the revolving electric motor (33) and the electricity storage device (31) corresponding to the target electricity storage rate (SOC0) and the pump output limit (POL0).
    Type: Application
    Filed: December 8, 2015
    Publication date: September 28, 2017
    Inventors: Masafumi HITA, Seiji ISHIDA, Ken TAKEUCHI, Shinya IMURA
  • Patent number: 9753652
    Abstract: To reduce deterioration of non-volatile memory and write data at higher speed, writing data is stored in a ReRAM when a page utilization rate R is lower than a threshold Rth1 and/or the writing data is frequently-rewritten data. With an empty space Semp2 in the ReRAM being less than a threshold Sth (step S110), when the data in the ReRAM is infrequently-rewritten data and the page utilization rate R obtained if target data is stored in a flash memory 22 is equal to or higher than a threshold value Rth3 (steps S120 and S130), data of logical sectors contained in N logical page addresses stored in a transfer list is read from the ReRAM to be written to the flash memory (steps S140 to S160). These steps reduce deterioration of the flash memory and allow higher data writing.
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: September 5, 2017
    Assignee: CHUO UNIVERSITY
    Inventors: Chao Sun, Kosuke Miyaji, Ken Takeuchi
  • Patent number: 9744962
    Abstract: The hybrid construction machine includes an engine 11, an electric motor/generator 14, a hydraulic pump unit 17, an electricity storage device 16, an inverter 15, a temperature regulator (16D or 16E), and a hybrid control unit 22. The hybrid control unit 22 executes at least one of first control for controlling a warming-up battery temperature regulator 16D so that it increases a temperature of the electricity storage device 16, second control for controlling the inverter 15 so that it reduces the power output from the inverter 15, and third control for controlling a pump capacity control unit 21 so that it reduces the flow rate of a hydraulic fluid delivered from the hydraulic pump unit 17, according to a charge/discharge history of the electricity storage device 16.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: August 29, 2017
    Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Chiaki Takahashi, Ken Takeuchi, Shinya Imura
  • Patent number: 9745723
    Abstract: Construction machine including: an inverter; a battery; a battery controller; a main controller controlling the inverter based on limited power modes prescribed; and a display device displaying a remaining battery electric power. The main controller calculates open circuit voltage and battery resistance values of the battery at the state of energy of the battery based on the specification information about the battery and state of energy of the battery which are input from the battery controller, calculates an amount of electric power stored in the battery in each of the limited power modes based on the open circuit voltage value and battery resistance value of the battery as well as limited power and operating voltage prescribed for each of the limited power modes, and outputs a display signal for displaying the amount of electric power stored in the battery in each of the limited power.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: August 29, 2017
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Takeshi Inoue, Motoo Futami, Ken Takeuchi, Kei Sakabe
  • Patent number: 9684464
    Abstract: A semiconductor storage device includes at least one memory from among a primary memory, a mirror memory storing data corresponding to data stored in the primary memory, and a buffer memory; and a controller that controls the at least one memory so as to store data in the at least one memory and read data from the at least one memory.
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: June 20, 2017
    Assignee: CHUO UNIVERSITY
    Inventors: Ken Takeuchi, Shuhei Tanakamaru
  • Publication number: 20170145658
    Abstract: Provided is a hybrid work machine capable of performing a warm-up operation on an electric storage device by charging and discharging while suppressing the occurrence of lug-down or over-revolution to an engine. The hybrid work machine includes: an engine; an assist motor mechanically connected to the engine, causing a discharge by generating a drive torque, and generating electric power by generating a brake torque; a hydraulic pump driven by a total torque of the engine and the assist motor; an electric storage device storing the electric power generated by the assist motor and supplying the electric power when the assist motor is discharged; and a controller outputting a torque command signal in order to control the drive torque or the brake torque of the assist motor.
    Type: Application
    Filed: February 3, 2015
    Publication date: May 25, 2017
    Inventors: Shinya IMURA, Masafumi HITA, Hiroaki AMANO, Seiji ISHIDA, Ken TAKEUCHI, Itaru NAYA, Chiaki TAKAHASHI
  • Patent number: 9611624
    Abstract: An electric power storage device (19) disposed on a revolving frame (6) located closer to an upstream side in a flow direction of cooling air (F) than a heat exchanger (18) is provided on an upper revolving structure (4). The electric power storage device (19) has a box-shaped casing (20) forming an outer wall and a battery module (29) provided in the casing (20) and accommodating an electrolyte. An electrolyte discharge pipe (30) for discharging an electrolyte mist and/or electrolyte injected out of the battery module (29) at abnormality of the battery module (29) to an outside of the upper revolving structure (4) is provided on the casing (20).
    Type: Grant
    Filed: May 13, 2015
    Date of Patent: April 4, 2017
    Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Ken Takeuchi, Shinichiro Yoshida, Itaru Naya, Shigeyuki Yoshihara
  • Patent number: 9598838
    Abstract: There are provided a work vehicle comprising a motor generator (6) driven by an engine, a hydraulic pump (4) driven by at least either of the motor generator and the engine, a work device (50) driven by hydraulic fluid from the hydraulic pump, a electric traction motor (9) driving wheels (61), an electrical storage device (11) connected to the motor generator and to the electric traction motor and charged electrically on the basis of a target SOC; and a control device (200) varying the target SOC for the electrical storage device (11) on the basis of total demanded power (Pf+Prun) of the hydraulic pump and the electric traction motor.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: March 21, 2017
    Assignee: KCM Corporation
    Inventors: Satoru Kaneko, Takashi Ikimi, Noritaka Itou, Hidekazu Moriki, Ken Takeuchi
  • Publication number: 20160257293
    Abstract: The hybrid construction machine includes an engine 11, an electric motor/generator 14, a hydraulic pump unit 17, an electricity storage device 16, an inverter 15, a temperature regulator (16D or 16E), and a hybrid control unit 22. The hybrid control unit 22 executes at least one of first control for controlling a warming-up battery temperature regulator 16D so that it increases a temperature of the electricity storage device 16, second control for controlling the inverter 15 so that it reduces the power output from the inverter 15, and third control for controlling a pump capacity control unit 21 so that it reduces the flow rate of a hydraulic fluid delivered from the hydraulic pump unit 17, according to a charge/discharge history of the electricity storage device 16.
    Type: Application
    Filed: January 8, 2016
    Publication date: September 8, 2016
    Inventors: Chiaki Takahashi, Ken Takeuchi, Shinya Imura
  • Publication number: 20160222631
    Abstract: Provided is a hybrid construction machine which can improve temperature control efficiency of an electrical storage device. It includes an engine 1, an assisting electricity generation motor 2 which performs assistance of power for the engine 1 and electricity generation and an electrical storage device 8 which performs transfer of electric power with this assisting electricity generation motor 2. The electrical storage device 8 includes a plurality of battery cells 200, a housing 220 which covers the plurality of battery cells 200 in a state of leaving them separated, a cooling plate 203 which is attached to this housing 220 and performs heat exchange with the plurality of battery cells 200, and a projection 214 which is interposed between the housing 220 and the cooling plate 203 and hinders heat transfer between the housing 220 and the cooling plate 203.
    Type: Application
    Filed: January 19, 2015
    Publication date: August 4, 2016
    Inventors: Ryuji KOHNO, Ken TAKEUCHI, Shigeyuki YOSHIHARA
  • Publication number: 20160147652
    Abstract: Degradation in processing capability due to copying during garbage collection is reduced. A data storage system includes a memory unit provided with a memory, into which data are written in units of pages, and a memory controller that controls writing of data to the memory; and a controller that indicates, to the memory controller, a logical page address to which data are to be written. The memory controller determines a target block that is a block to be erased when garbage collection is next performed and provides the controller with information on a logical page address corresponding to a physical page address of a valid page in the target block. The controller instructs the memory controller to write data to the logical page address received from the memory controller.
    Type: Application
    Filed: May 8, 2014
    Publication date: May 26, 2016
    Applicants: CHUO UNIVERSITY, CHUO UNIVERSITY
    Inventors: Kosuke MIYAJI, Chao SUN, Ken TAKEUCHI
  • Patent number: 9343143
    Abstract: To improve a reading speed and a writing speed while preventing occurrence of disturbance in a resistance storage element, specifically, a nonvolatile storage device that has a memory having at least one nonvolatile resistance storage element and a control unit configured to write a high resistance state or a low resistance state to the resistance storage element, wherein the control unit applies a bias to the resistance storage element in a verification operation carried out after writing the high resistance state, or applies a bias to the resistance storage element in a verification operation carried out after writing the low resistance state, these biases being in directions opposite to each other.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: May 17, 2016
    Assignee: CHUO UNIVERSITY
    Inventors: Tomoko Iwasaki, Kosuke Miyaji, Ken Takeuchi
  • Patent number: 9299436
    Abstract: One package contains a plurality of memory chips. Each memory chip has an I/O terminal which generates a busy signal. The busy signal enables a busy state when a power supply voltage value reaches a specified and guaranteed range after a power-on sequence. The busy signal maintains the busy state until completion of initialization operations for the plurality of memory chips. The busy signal releases the busy state after completion of all initialization operations for the plurality of memory chips.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: March 29, 2016
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hiroshi Nakamura, Kenichi Imamiya, Ken Takeuchi