Patents by Inventor Tatsuo Horiba
Tatsuo Horiba 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).
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Patent number: 6835215Abstract: Provided is a carbon material having a superior reversibility in lithium intercalation-deintercalation reaction, and a non-aqueous secondary battery using the carbon material as an active material for a negative electrode, which has a high energy density and an excellent rapid charging and discharging characteristics. Graphite powder having a maximum particle diameter of less than 100 &mgr;m and an existing reaction of rhombohedral structure in the crystalline structure of less than 20% is used as an active material for the negative electrode of the non-aqueous secondary battery. The graphite powder can be obtained by pulverizing raw graphite with a jet mill, and subsequently treating the powder at a temperature equal to or higher than 900°C.Type: GrantFiled: December 19, 2001Date of Patent: December 28, 2004Assignee: Hitachi, Ltd.Inventors: Hidetoshi Honbo, Seiji Takeuchi, Hideto Momose, Tatsuo Horiba, Yasushi Muranaka, Yoshito Ishii
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Publication number: 20040175619Abstract: Objects of the present invention is to provide a carbon material having a superior reversibility in lithium intercalation-deintercalation reaction, and a non-aqueous secondary battery using the carbon material as an active material for a negative electrode, which has a high energy density and an excellent rapid charging and discharging characteristics.Type: ApplicationFiled: March 18, 2004Publication date: September 9, 2004Inventors: Hidetoshi Honbo, Seiji Takeuchi, Hideto Momose, Tatsuo Horiba, Yasushi Muranaka, Yoshito Ishii
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Publication number: 20040175620Abstract: Objects of the present invention is to provide a carbon material having a superior reversibility in lithium intercalation-deintercalation reaction, and a non-aqueous secondary battery using the carbon material as an active material for a negative electrode, which has a high energy density and an excellent rapid charging and discharging characteristics.Type: ApplicationFiled: March 18, 2004Publication date: September 9, 2004Inventors: Hidetoshi Honbo, Seiji Takeuchi, Hideto Momose, Tatsuo Horiba, Yasushi Muranaka, Yoshito Ishii
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Patent number: 6723466Abstract: A storage battery includes a rolled, laminated battery element made up of two groups of electrode materials composed of positive and negative electrode materials, laminated together through separators, an outer sheathing enclosing therein the laminated battery element, a spindle around which the laminated battery element is wound and rolled up so that the spindle and the laminated battery element are fixedly connected to each other. One axial end of the spindle is constrained in the axial direction of the laminated battery element by the bottom of the outer sheathing, while the other axial end of the spindle is elastically supported by an upper lid portion hermetically covering the opening end, so as to stably support the laminated battery element by the spindle and to prevent displacement of the laminated battery element from its set position even during application of vibrations to the storage battery.Type: GrantFiled: March 13, 2001Date of Patent: April 20, 2004Assignees: Nissan Motor Co., Ltd., Shin-Kobe Electric Machinery Co., Ltd.Inventors: Etsuo Oogami, Tatsuo Horiba
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Patent number: 6541154Abstract: A multi-cell structure battery (1A) comprising: a plurality of columnar cells accommodated in a casing (11); bus bars (23A, 23B) to connect respective terminals of the cells; signal transmitting wires (16) to connect the respective cells to an external device; a cell holder (12) to hold the cells; and a covering (13) fixed to the cell holder so as to oppose against the terminals of the cells, the bus bars being disposed on an inner surface of the covering opposed to the terminals of the cells and the signal transmitting wires being disposed in an outer surface of the covering.Type: GrantFiled: March 13, 2001Date of Patent: April 1, 2003Assignees: Nissan Motor Co., Ltd., Shin-Kobe Electric Machinery Co., Ltd.Inventors: Etsuo Oogami, Tatsuo Horiba
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Publication number: 20020102457Abstract: A multi-cell structure battery (1A) comprising: a plurality of columnar cells accommodated in a casing (11); bus bars (23A, 23B) to connect respective terminals of the cells; signal transmitting wires (16) to connect the respective cells to an external device; a cell holder (12) to hold the cells; and a covering (13) fixed to the cell holder so as to oppose against the terminals of the cells, the bus bars being disposed on an inner surface of the covering opposed to the terminals of the cells and the signal transmitting wires being disposed in an outer surface of the covering.Type: ApplicationFiled: March 13, 2001Publication date: August 1, 2002Inventors: Etsuo Oogami, Tatsuo Horiba
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Patent number: 6383467Abstract: Objects of the present invention is to provide a carbon material having a superior reversibility in lithium intercalation-deintercalation reaction, and a non-aqueous secondary battery using the carbon material as an active material for a negative electrode, which has a high energy density and an excellent rapid charging and discharging characteristics. Graphite powder having a maximum particle diameter of less than 100 &mgr;m and an existing fraction of rhombohedral structure in the crystalline structure of less than 20% is used as an active material for the negative electrode of the non-aqueous secondary battery. The graphite powder can be obtained by pulverizing raw graphite with a jet mill, and subsequently treating the powder at a temperature equal to or higher than 900° C.Type: GrantFiled: December 28, 1999Date of Patent: May 7, 2002Assignee: Hitachi, Ltd.Inventors: Hidetoshi Honbo, Seiji Takeuchi, Hideto Momose, Tatsuo Horiba, Yasushi Muranaka, Yoshito Ishii
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Publication number: 20020045100Abstract: Objects of the present invention is to provide a carbon material having a superior reversibility in lithium intercalation-deintercalation reaction, and a non-aqueous secondary battery using the carbon material as an active material for a negative electrode, which has a high energy density and an excellent rapid charging and discharging characteristics.Type: ApplicationFiled: December 19, 2001Publication date: April 18, 2002Inventors: Hidetoshi Honbo, Seiji Takeuchi, Hideto Momose, Tatsuo Horiba, Yasushi Muranaka, Yoshito Ishii
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Publication number: 20010049059Abstract: Objects of the present invention is to provide a carbon material having a superior reversibility in lithium intercalation-deintercalation reaction, and a non-aqueous secondary battery using the carbon material as an active material for a negative electrode, which has a high energy density and an excellent rapid charging and discharging characteristics.Type: ApplicationFiled: July 3, 2001Publication date: December 6, 2001Inventors: Hidetoshi Honbo, Seiji Takeuchi, Hideto Momose, Tatsuo Horiba, Yasushi Muranaka, Yoshito Ishii
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Publication number: 20010036571Abstract: A storage battery includes a rolled, laminated battery element made up of two groups of electrode materials composed of positive and negative electrode materials, laminated together through separators, an outer sheathing enclosing therein the laminated battery element, a spindle around which the laminated battery element is wound and rolled up so that the spindle and the laminated battery element are fixedly connected to each other. One axial end of the spindle is constrained in the axial direction of the laminated battery element by the bottom of the outer sheathing, while the other axial end of the spindle is elastically supported by an upper lid portion hermetically covering the opening end, so as to stably support the laminated battery element by the spindle and to prevent displacement of the laminated battery element from its set position even during application of vibrations to the storage battery.Type: ApplicationFiled: March 13, 2001Publication date: November 1, 2001Inventors: Etsuo Oogami, Tatsuo Horiba
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Publication number: 20010020927Abstract: A system using a secondary cell having at least one of a heat source, motor, controlling circuit, driving circuit, LSI, IC and display element, each having a capacity of 0.5 to 50 kWh, and secondary cells, wherein at least one of the secondary cells includes a positive electrode and a negative electrode and has a discharge time of at least 15 minutes at a discharge of 580 W/l or more, and at least one of the positive electrode and the negative electrode containing a particle with cracks.Type: ApplicationFiled: February 16, 2001Publication date: September 13, 2001Inventors: Kyoko Ikawa, Yasushi Muranaka, Yosimi Komatu, Tatsuo Horiba, Yoshiro Mikami
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Patent number: 6268086Abstract: A carbon material is provided having a superior reversibility in lithium intercalation-deintercalation reaction, and a non-aqueous secondary battery is provided which uses the carbon material as an active material for a negative electrode, which has a high energy density and an excellent rapid charging and discharging characteristics. Graphite powder having a maximum particle diameter of less than 100 &mgr;m and an existing fraction of rhombohedral structure in the crystalline structure of less than 20% is used as an active material for the negative electrode of the non-aqueous secondary battery. The graphite powder can be obtained by pulverizing raw graphite with a jet mill, and subsequently treating the powder at a temperature equal to or higher than 900° C.Type: GrantFiled: April 10, 1996Date of Patent: July 31, 2001Assignee: Hitachi, Ltd.Inventors: Hidetoshi Honbo, Seiji Takeuchi, Hideto Momose, Tatsuo Horiba, Yasushi Muranaka, Yoshito Ishii
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Patent number: 6083645Abstract: A lithium secondary battery suitable for use as a power source for a secondary battery using system such as an electric automobile, motor bicycle or portable equipment includes a negative electrode (17) composed of a carbon material including carbon particles carrying fine particles of a metal which forms an alloy with lithium. The carbon particles have a face-to-face dimension which is 3.354 to 3.369 .ANG. and a crystal grain size in a C-axis direction which is equal to or greater than 300 .ANG.. The metal forming an alloy with lithium has a particle size which is equal to or smaller than 1000 .ANG.. With the use of the charge/discharge capacity of an alloy of the metal and lithium, a value exceeding the theoretical capacity 372 mAh/g of graphite can be obtained. The lithium secondary battery is capable of discharge with an output energy density equal to or higher than 350 W/kg.Type: GrantFiled: September 18, 1998Date of Patent: July 4, 2000Assignee: Hitachi, Ltd.Inventors: Seiji Takeuchi, Hidetoshi Honbo, Takeo Yamagata, Tatsuo Horiba, Yasushi Muranaka
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Patent number: 6034507Abstract: The present invention provides a distributed secondary battery type power storage system capable of maintaining the soundness of the secondary battery and of efficient electric power charging and discharging operations. The secondary battery power storage system comprises a secondary battery connected to a load, a charge/discharge unit connectable to a power system and connected to the secondary battery, and a plurality of loads connected to the charge/discharge unit. A power receiving object is selected and a capacity is determined on the basis of information about the operating condition of the plurality of loads, and the surplus electric power remaining in the secondary battery after feeding electric power from the secondary battery to the load is fed to the selected power receiving object through the charge/discharge unit. The secondary battery power storage system is capable of maintaining the soundness of the secondary battery and of efficient charging and discharging operation.Type: GrantFiled: August 14, 1998Date of Patent: March 7, 2000Assignee: Hitachi, Ltd.Inventors: Kyoko Ikawa, Tatsuo Horiba
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Patent number: 5922491Abstract: A secondary battery having a large capacity, and a preferable characteristics in both rapid charging and rapid discharging comprises a positive electrode a negative electrode, and an electrolyte which separates said electrodes, in which any one of the positive electrode or negative electrode contains particles composed of a material contributing to a charge-discharge reaction, and the particles comprise at least two phases and fine pores which are formed by dissolving at least one of the phases.Type: GrantFiled: June 6, 1996Date of Patent: July 13, 1999Assignees: Hitachi, Ltd., Hitachi Chemical Co., Ltd.Inventors: Kyoko Ikawa, Yasushi Muranaka, Tatsuo Horiba, Yosimi Komatu
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Patent number: 5879829Abstract: A treating fluid is in contact with a negative electrode containing lithium of a lithium cell under a first condition to react a surface portion of the negative electrode, and a treating fluid is in contact with lithium existing inside an article formed on the surface of the above-described negative electrode under a second condition. The cells can be effectively treated under safety condition to collect either the valuable substances, or the cell constructive components.Type: GrantFiled: October 17, 1997Date of Patent: March 9, 1999Assignee: Hitachi, Ltd.Inventors: Katsunori Nishimura, Hidetoshi Honbo, Akihiro Gotoh, Mamoru Mizumoto, Tatsuo Horiba
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Patent number: 5834922Abstract: The present invention provides a distributed secondary battery type power storage system capable of maintaining the soundness of the secondary battery and of efficient electric power charging and discharging operations. The secondary battery power storage system comprises a secondary battery connected to a load, a charge/discharge unit connectable to a power system and connected to the secondary battery, and a plurality of loads connected to the charge/discharge unit. A power receiving object is selected and a capacity is determined on the basis of information about the operating condition of the plurality of loads, and the surplus electric power remaining in the secondary battery after feeding electric power from the secondary battery to the load is fed to the selected power receiving object through the charge/discharge unit. The secondary battery power storage system is capable of maintaining the soundness of the secondary battery and of efficient charging and discharging operation.Type: GrantFiled: February 23, 1996Date of Patent: November 10, 1998Assignee: Hitachi, Ltd.Inventors: Kyoko Ikawa, Tatsuo Horiba
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Patent number: 5770333Abstract: A non-aqueous secondary battery having a long life-time and a high capacity density is provided by increasing the discharging capacity of the negative electrode and extending the life-time of the negative electrode. The nonaqueous secondary battery has a positive electrode and a negative electrode reversibly absorbing and discharging an alkaline metal and a nonaqueous electrolyte, wherein the negative electrode is made of an inter-metallic compound containing at least one element selected from the group consisting of 4A group elements, P and Sb, the inter-metallic compound has any one of CaF.sub.2 type, ZnS type and AlLiSi type crystal structures, and the CaF.sub.2 type structure is any one an inverse-fluorite structure and a fluorite structure having a lattice constant larger than 6.36 .ANG..Type: GrantFiled: June 10, 1996Date of Patent: June 23, 1998Assignee: Hitachi, Ltd.Inventors: Akihiko Saito, Yasuhisa Aono, Tatsuo Horiba, Hideyo Kodama, Toshinori Dozono, Masahisa Inagaki
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Patent number: 5726551Abstract: A battery charging unit is provided with a charge controlling unit which is designed to perform at least one of rest mode operating function which causes to rest charging for respective battery, groups and discharge mode operating function which causes to discharge electric power from the respective battery groups in addition to charge mode operating function for the respective battery groups, the battery charging unit controls charging for the respective battery groups through the charge controlling unit while repeating at least two modes including the charging mode among the charging mode, rest mode and discharge mode in a predetermined time cycle and further performs a mutual control between the respective battery groups so that at least one battery group is placed in the rest mode in a predetermined sequence during the operation thereof, thereby, drawbacks of a conventional pulse like charging and burp charging, which are suitable for a quick charging but requires a large instantaneous charging current whType: GrantFiled: October 21, 1996Date of Patent: March 10, 1998Assignee: Hitachi, Ltd.Inventors: Taizou Miyazaki, Ryoso Masaki, Satoru Kaneko, Tatsuo Horiba
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Patent number: RE37678Abstract: The present invention provides a distributed secondary battery type power storage system capable of maintaining the soundness of the secondary battery and of efficient electric power charging and discharging operations. The secondary battery power storage system comprises a secondary battery connected to a load, a charge/discharge unit connectable to a power system and connected to the secondary battery, and a plurality of loads connected to the charge/discharge unit. A power receiving object is selected and a capacity is determined on the basis of information about the operating condition of the plurality of loads, and the surplus electric power remaining in the secondary battery feeding electric power from the secondary battery to the load is fed to the selected power receiving object through the charge/discharge unit. The secondary battery power storage system is capable of maintaining the soundness of the secondary battery and of efficient charging and discharging operation.Type: GrantFiled: November 9, 2000Date of Patent: April 30, 2002Assignee: Hitachi, Ltd.Inventors: Kyoko Ikawa, Tatsuo Horiba