Patents by Inventor Hidekazu Fujimura

Hidekazu Fujimura 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: 10522799
    Abstract: A battery pack that reduces a temperature difference between single cells and can increase a battery capacity per volume and a container provided with the same are provided. A battery pack 100, includes: a battery module 10 including a plurality of single cells 1 arranged in parallel in a line; and a partition member 20 provided on a side surface of the battery module 10 and forming a flow channel 21 through which a gas for exchanging heat with the plurality of single cells 1 is flowable, and the partition member 20 is provided so that the gas flowing through the flow channel 21 and at least two single cells 1 exchange heat and is inclined with respect to a direction orthogonal to an arrangement direction of the plurality of single cells 1 arranged in parallel in a line.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: December 31, 2019
    Assignee: HITACHI, LTD.
    Inventors: Nae Hisano, Shin Yamauchi, Mitsutoshi Honda, Hidekazu Fujimura, Kenji Takeda
  • Publication number: 20180123105
    Abstract: The present invention proposes a structure of a battery module in which a spacer can slide by means of a guide member constituting the battery module and can be positioned. A battery module according to the present invention is a battery module 9 provided with a battery block 8 in which a plurality of rectangular battery cells 1 are arranged and laminated, and includes a spacer 2 which intervenes between the plurality of battery cells 1, guide members 4 and 5 which slidably support the spacer 2 along a laminating direction of the battery cells 1, and end plates 3 as a pair which are respectively arranged on one side and the other side of the guide members 4 and 5 in a sliding direction and which sandwich the battery block 8 from both sides in the sliding direction.
    Type: Application
    Filed: December 26, 2017
    Publication date: May 3, 2018
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Naoya TOKOO, Osamu KUBOTA, Hidekazu FUJIMURA, Michihiro KIMURA, Naoki KOJIMA, Takashi SUZUKI
  • Patent number: 9876207
    Abstract: The present invention proposes a structure of a battery module in which a spacer can slide by means of a guide member constituting the battery module and can be positioned. A battery module according to the present invention is a battery module 9 provided with a battery block 8 in which a plurality of rectangular battery cells 1 are arranged and laminated, and includes a spacer 2 which intervenes between the plurality of battery cells 1, guide members 4 and 5 which slidably support the spacer 2 along a laminating direction of the battery cells 1, and end plates 3 as a pair which are respectively arranged on one side and the other side of the guide members 4 and 5 in a sliding direction and which sandwich the battery block 8 from both sides in the sliding direction.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: January 23, 2018
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Naoya Tokoo, Osamu Kubota, Hidekazu Fujimura, Michihiro Kimura, Naoki Kojima, Takashi Suzuki
  • Publication number: 20160149180
    Abstract: The present invention proposes a structure of a battery module in which a spacer can slide by means of a guide member constituting the battery module and can be positioned. A battery module according to the present invention is a battery module 9 provided with a battery block 8 in which a plurality of rectangular battery cells 1 are arranged and laminated, and includes a spacer 2 which intervenes between the plurality of battery cells 1, guide members 4 and 5 which slidably support the spacer 2 along a laminating direction of the battery cells 1, and end plates 3 as a pair which are respectively arranged on one side and the other side of the guide members 4 and 5 in a sliding direction and which sandwich the battery block 8 from both sides in the sliding direction.
    Type: Application
    Filed: May 28, 2014
    Publication date: May 26, 2016
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Naoya TOKOO, Osamu KUBOTA, Hidekazu FUJIMURA, Michihiro KIMURA, Naoki KOJIMA, Takashi SUZUKI
  • Patent number: 9325040
    Abstract: An electrical storage apparatus 1 includes a plurality of battery modules 10 and cooling passages A, B for cooling each of the battery modules 10. The cooling passage A is configured so as to cool all battery modules 10 mounted in the electrical storage apparatus 1 at all times during charging. The cooling passage B is configured so as to cool only a new battery module 10a as a replacement during charging. This enables the battery module 10a having a temperature during charging higher than that of a battery module 10 yet to be replaced to be subject to forced cooling, thereby preventing performance of the battery module 10a from being degraded.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: April 26, 2016
    Assignee: Hitachi, Ltd.
    Inventors: Kou Takahashi, Hidekazu Fujimura, Tadashi Yoshida
  • Patent number: 9166207
    Abstract: A secondary battery module includes a plurality of plate shaped secondary cells; and a casing that is formed with a plurality of grooves extending in its depth direction, with at least one of the secondary cells being housed in a space defined between neighboring grooves, wherein: the plurality of grooves each extends from a lower portion of the casing towards an upper portion of the casing; and the plurality of secondary cells are electrically connected together in a space defined above the grooves and internal to the casing.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: October 20, 2015
    Assignee: HITACHI, LTD.
    Inventor: Hidekazu Fujimura
  • Publication number: 20150214521
    Abstract: A battery pack that reduces a temperature difference between single cells and can increase a battery capacity per volume and a container provided with the same are provided. A battery pack 100, includes: a battery module 10 including a plurality of single cells 1 arranged in parallel in a line; and a partition member 20 provided on a side surface of the battery module 10 and forming a flow channel 21 through which a gas for exchanging heat with the plurality of single cells 1 is flowable, and the partition member 20 is provided so that the gas flowing through the flow channel 21 and at least two single cells 1 exchange heat and is inclined with respect to a direction orthogonal to an arrangement direction of the plurality of single cells 1 arranged in parallel in a line.
    Type: Application
    Filed: July 31, 2013
    Publication date: July 30, 2015
    Applicant: Hitachi, Ltd.
    Inventors: Nae Hisano, Shin Yamauchi, Mitsutoshi Honda, Hidekazu Fujimura, Kenji Takeda
  • Patent number: 8658323
    Abstract: The invention provides a solid oxide fuel cell generation system and a start up method thereof which heat up a reformer and a cell main body without any water and nitrogen gas, and start up for a short time until a power generation and without deteriorating a reliability of the cell. In a solid oxide fuel cell generation system having a power generation cell including an anode, a cathode and a solid electrolyte membrane, a mixing portion for obtaining a mixed gas by mixing a used fuel gas discharged from the anode with a raw fuel, a reducing combustion gas generating apparatus, and a reforming portion, the reducing combustion gas generating apparatus has a starting burner generating a reducing combustion gas, and the mixing portion, the reducing combustion gas generating apparatus, the reforming portion and the anode are coupled alphabetically from an upstream side.
    Type: Grant
    Filed: October 7, 2008
    Date of Patent: February 25, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Hidekazu Fujimura, Hiromi Tokoi, Shin Takahashi
  • Publication number: 20130177791
    Abstract: An electrical storage apparatus 1 includes a plurality of battery modules 10 and cooling passages A, B for cooling each of the battery modules 10. The cooling passage A is configured so as to cool all battery modules 10 mounted in the electrical storage apparatus 1 at all times during charging. The cooling passage B is configured so as to cool only a new battery module 10a as a replacement during charging. This enables the battery module 10a having a temperature during charging higher than that of a battery module 10 yet to be replaced to be subject to forced cooling, thereby preventing performance of the battery module 10a from being degraded.
    Type: Application
    Filed: September 30, 2010
    Publication date: July 11, 2013
    Applicant: Hitachi, Ltd.
    Inventors: Kou Takahashi, Hidekazu Fujimura, Tadashi Yoshida
  • Patent number: 8349505
    Abstract: A fuel cell power generation system of the invention includes a hydrogen supply unit for reforming hydrocarbon fuel to generate reformed gas including hydrogen or generating reaction gas including the hydrogen from a hydrogen material, an oxygen supply unit, a fuel cell for receiving the hydrogen from the hydrogen supply unit and oxygen from the oxygen supply unit, for power generation, temperature sensors each for detecting a temperature of the hydrogen supply unit, and a temperature control unit for adjusting generated power, thereby controlling the temperature of the hydrogen supply unit, based on the detected temperature. The temperature control unit includes a target power setting unit for setting first and second target powers as generated power target values, and a target power switching unit for performing target value switching between the first and second target powers according to a predetermined change in the detected temperature.
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: January 8, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Takaaki Mizukami, Hidekazu Fujimura, Tsutomu Okusawa
  • Publication number: 20120270075
    Abstract: A secondary battery module includes a plurality of plate shaped secondary cells; and a casing that is formed with a plurality of grooves extending in its depth direction, with at least one of the secondary cells being housed in a space defined between neighboring grooves, wherein: the plurality of grooves each extends from a lower portion of the casing towards an upper portion of the casing; and the plurality of secondary cells are electrically connected together in a space defined above the grooves and internal to the casing.
    Type: Application
    Filed: April 18, 2012
    Publication date: October 25, 2012
    Inventor: Hidekazu FUJIMURA
  • Patent number: 8277996
    Abstract: A fuel cell according to the present invention comprises a membrane electrode assembly, a bipolar plate for guiding a reaction gas to the membrane electrode assembly, two layers of coolant flow fields formed on the bipolar plane opposite to another plane on which a reaction gas flow field is formed, and an interlayer separation plate; wherein the interlayer separation plate separates the two layers of coolant flow fields and has permeability or jet orifices so as to allow a coolant to pass through.
    Type: Grant
    Filed: August 28, 2007
    Date of Patent: October 2, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Tsutomu Okusawa, Masaya Kozakai, Hidekazu Fujimura, Ko Takahashi
  • Publication number: 20120081076
    Abstract: A secondary battery system capable of controlling charge/discharge of a secondary battery that includes a core winding: calculates a change quantity ?TT indicating an extent of change in the temperature difference ?T between the temperatures in the central area and in the outer circumferential area of the core winding represented by a difference between a temperature difference ?T1 calculated at a start of use of the secondary battery and a temperature difference ?T2 calculated after a predetermined length of time elapses following the start of use of the secondary battery; and executes detection of a heat generation distribution at the core winding based upon the change quantity ?TT.
    Type: Application
    Filed: August 18, 2011
    Publication date: April 5, 2012
    Applicant: Hitachi, Ltd.
    Inventors: Hidekazu FUJIMURA, Kazuo TAKAHASHI
  • Publication number: 20110129706
    Abstract: A lithium-ion secondary battery includes: a winding body in a coil formation at a battery container, the winding body wrapping a cathode film in which lithium ions store and from which lithium ions extract and a anode film in which lithium ions store and from which lithium ions extract, and the cathode film and the anode film being electrically separated from each other via a porous separator; and a heat sink disposed inside the battery container, which contacts the battery container and transmits heat inside the winding body to the battery container.
    Type: Application
    Filed: August 17, 2010
    Publication date: June 2, 2011
    Applicant: Hitachi, Ltd.
    Inventors: Kazuo TAKAHASHI, Hidekazu Fujimura, Ko Takahashi, Yoshimi Yanai
  • Publication number: 20090104484
    Abstract: The invention provides a solid oxide fuel cell generation system and a start up method thereof which heat up a reformer and a cell main body without any water and nitrogen gas, and start up for a short time until a power generation and without deteriorating a reliability of the cell. In a solid oxide fuel cell generation system having a power generation cell including an anode, a cathode and a solid electrolyte membrane, a mixing portion for obtaining a mixed gas by mixing a used fuel gas discharged from the anode with a raw fuel, a reducing combustion gas generating apparatus, and a reforming portion, the reducing combustion gas generating apparatus has a starting burner generating a reducing combustion gas, and the mixing portion, the reducing combustion gas generating apparatus, the reforming portion and the anode are coupled alphabetically from an upstream side.
    Type: Application
    Filed: October 7, 2008
    Publication date: April 23, 2009
    Inventors: Hidekazu Fujimura, Hiromi Tokoi, Shin Takahashi
  • Publication number: 20080248346
    Abstract: A methanol water solution circulation system having a smaller heat capacity than that of a methanol water solution circulation system used at time of regular operation or a methanol water solution circulation system having a small total volume is installed for startup. Startup fuel is supplied to an anode, and the temperature thereof is raised using heat generation action of the fuel cell, thus the temperature of the cell rises. Fuel at the exit of the anode is circulated again to the entrance of the anode, and the processing is repeated, thus the power generation cell is heated up to the operating temperature.
    Type: Application
    Filed: April 2, 2008
    Publication date: October 9, 2008
    Inventors: Hidekazu Fujimura, Tsutomu Okusawa
  • Publication number: 20080081239
    Abstract: A fuel cell according to the present invention comprises a membrane electrode assembly, a bipolar plate for guiding a reaction gas to the membrane electrode assembly, two layers of coolant flow fields formed on the bipolar plane opposite to another plane on which a reaction gas flow field is formed, and an interlayer separation plate; wherein the interlayer separation plate separates the two layers of coolant flow fields and has permeability or jet orifices so as to allow a coolant to pass through.
    Type: Application
    Filed: August 28, 2007
    Publication date: April 3, 2008
    Inventors: Tsutomu OKUSAWA, Masaya KOZAKAI, Hidekazu FUJIMURA, Ko TAKAHASHI
  • Publication number: 20070031718
    Abstract: A fuel cell power generation system includes a hydrogen gas separator between a fuel gas feed unit and a fuel cell, and a circulation passage and a circulation blower for conveying an anode exhaust gas to the inlet of the hydrogen gas separator. The system is so configured as to convey a mixed gas of the anode exhaust gas and the fuel gas to the hydrogen gas separator via the circulation blower, and separated hydrogen gas is fed to the fuel cell.
    Type: Application
    Filed: August 8, 2006
    Publication date: February 8, 2007
    Inventors: Hidekazu Fujimura, Masahiro Komachiya
  • Patent number: 7152005
    Abstract: In order to provide an operation and maintenance planning aiding system for a power generation installation which prepares an operation plan for a plurality of power generation units by making use of actual plant data and based on a total judgment including a variety of circumstances of the machine and apparatus or the parts thereof in the power generation units, in the system the plurality of power generation units 41, 42, 51 and 52, a power supply command center 3 and a service center 1 are arranged and connected via a communication network 6, the service center 1 obtains the plant data via the communication network 6 from the plurality of power generation units 41, 42, 51 and 52, calculates in real time a power generation efficiency of a concerned power generation unit for every plurality of power generation units 41, 42, 51 and 52 by making use of the obtained plant data and design data of the concerned power generation unit and prepares an operation and maintenance plan for each of the power generation u
    Type: Grant
    Filed: April 12, 2005
    Date of Patent: December 19, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Yoshiharu Hayashi, Hidekazu Fujimura, Masao Furukawa, Katsuhito Shimizu, Yasushi Hayasaka
  • Publication number: 20060271553
    Abstract: Documents used for process control can be managed and maintained from a document server and a terminal. In order to update the documents quickly so that an operated process is always kept in the most preferable state of operation, the document server stores and manages production documents used for actually controlling and monitoring a control system plant, whereas the terminal system is used to refer and edit plant documents. The terminal can synchronize contents of the plant documents in the document server with those in the control system before storing the synchronized plant documents in the terminal.
    Type: Application
    Filed: February 15, 2006
    Publication date: November 30, 2006
    Inventors: Katsuhito Shimizu, Tooru Kimura, Yoshio Maruyama, Yukiko Mouri, Satoru Shimizu, Hidekazu Fujimura, Masao Furukawa, Yoshiharu Hayashi, Yasushi Hayasaka