Patents by Inventor Yoshinori Wariishi
Yoshinori Wariishi 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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Solid polymer electrolyte fuel cell assembly, fuel cell stack, and method of operating cell assembly
Patent number: 7687165Abstract: A cell assembly is formed by stacking a first unit cell and a second unit cell to each other. The first unit cell includes a first unified body, and the second unit cell includes a second unified body. In the cell assembly, the first and second unit cells have structures different from each other.Type: GrantFiled: September 30, 2008Date of Patent: March 30, 2010Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Seiji Sugiura, Yoshinori Wariishi, Naoyuki Enjoji, Narutoshi Sugita -
Patent number: 7566511Abstract: A cell assembly (10) includes a first unit cell (12) and a second unit cell (14). The first unit cell (12) and the second unit cell (14) are juxtaposed such that electrode surfaces of the first unit cell (12) and electrode surfaces of the second unit cell (14) are aligned in parallel with each other. An oxygen-containing gas flow passage (32) includes a first oxygen-containing gas passage (38) in the first unit cell (12), an oxygen-containing gas connection passage (40) in a connection passage member (16), and a second oxygen-containing gas passage (42) in the second unit cell (14). The first oxygen-containing gas passage (38), the oxygen-containing gas connection passage (40), and the second oxygen-containing gas passage (42) are connected serially from the first unit cell (12) to the second unit cell (14).Type: GrantFiled: June 26, 2003Date of Patent: July 28, 2009Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Yoshinori Wariishi, Naoyuki Enjoji, Yoichi Asano, Hiroshi Shinkai
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SOLID POLYMER ELECTROLYTE FUEL CELL ASSEMBLY, FUEL CELL STACK, AND METHOD OF OPERATING CELL ASSEMBLY
Publication number: 20090042069Abstract: A cell assembly is formed by stacking a first unit cell and a second unit cell to each other. The first unit cell includes a first unified body, and the second unit cell includes a second unified body. In the cell assembly, the first and second unit cells have structures different from each other.Type: ApplicationFiled: September 30, 2008Publication date: February 12, 2009Applicant: HONDA GIKEN KOGYO KABUSHIKI KAISHAInventors: Seiji SUGIURA, Yoshinori WARIISHI, Naoyuki ENJOJI, Narutoshi SUGITA -
Solid polymer electrolyte fuel cell assembly, fuel cell stack, and method of operating cell assembly
Patent number: 7465515Abstract: A cell assembly is formed by stacking a first unit cell and a second unit cell to each other. The first unit cell includes a first unified body, and the second unit cell includes a second unified body. In the cell assembly, the first and second unit cells have structures different from each other.Type: GrantFiled: March 6, 2002Date of Patent: December 16, 2008Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Seiji Sugiura, Yoshinori Wariishi, Naoyuki Enjoji, Narutoshi Sugita -
Patent number: 7459231Abstract: A fuel cell stack (10) includes a first sub-stack (12), a second sub-stack (14), and a third sub-stack (16) disposed in the flow direction of an oxidizing gas. An intermediate plate (18a) is interposed between the first and second sub-stacks (12, 14), and an intermediate plate (18b) is interposed between the second and third sub-stacks (14, 16). In this fuel stack (10), the flow of an oxidizing gas is set such that the oxidizing gas flows in series in the direction from the first sub-stack (12) to the third sub-stack (16). Between the sub-stacks additional oxidizing gas supplies (70,74) are provided through which oxidizing gas of lower humidity than the humidity of the oxidizing gas entering the first sub-stack is supplied. This arrangement allows an efficient management of the humidity water content of the oxidizing gas with sufficient moisturizing of the solid polymer membrane whilst avoiding excessive condensation of water vapour within the stack.Type: GrantFiled: March 5, 2002Date of Patent: December 2, 2008Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Yoshinori Wariishi, Naoyuki Enjoji, Hideaki Kikuchi, Narutoshi Sugita, Masaharu Suzuki, Seiji Sugiura
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Patent number: 7413821Abstract: A cell assembly includes a first unit cell and a second unit cell which are stacked to each other. The first unit cell has a first unified body, and the second unit cell has a second unified body. A plurality of oxidizing gas passages and a plurality of fuel gas passages are provided in the cell assembly. The oxidizing gas passages in the first unit cell and the oxidizing gas passages in the second unit cell are communicated in series to each other. The fuel gas passages in the first unit cell and the fuel gas passages in the second unit cell are communicated in series to each other.Type: GrantFiled: March 5, 2002Date of Patent: August 19, 2008Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Seiji Sugiura, Yoshinori Wariishi, Narutoshi Sugita, Naoyuki Enjoji
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Patent number: 7368199Abstract: A casing includes end plates and first through fourth side plates. The first and third side plates are short, and the second and fourth side plates are long. At least cross sectional areas or shapes of the first through fourth side plates are determined such that the sides of the end plates have substantially the same deflection in the stacking direction.Type: GrantFiled: October 20, 2004Date of Patent: May 6, 2008Assignee: Honda Motor Co., Ltd.Inventors: Yoshinori Wariishi, Narutoshi Sugita
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Patent number: 7348083Abstract: A humidity sensor is disposed in a circulation passage as a passage of a hydrogen gas supplied to an anode of a fuel cell stack. A load current setting unit determines a level of electrical current supplied to a load. A flow rate controller controls a compressor based on the humidity detected by the humidity sensor and the load current determined by the load current setting unit to regulate a flow rate of the air supplied to a cathode of the fuel cell stack for maintaining the humidity of the hydrogen gas within a predetermined range less than 100%. The fuel cell stack generates the load current efficiently without discharging the hydrogen gas to the outside.Type: GrantFiled: March 12, 2004Date of Patent: March 25, 2008Assignee: Honda Motor Co., Ltd.Inventors: Naoyuki Enjoji, Norimasa Kawagoe, Masaharu Suzuki, Yoshinori Wariishi
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Patent number: 7311987Abstract: A heat medium passage for controlling the temperature of the electric power generation section is separated from the electric power generation section of a fuel cell including a plurality of separators and electric power generating elements alternately laminated in a lamination direction. A heat plate exchanges heat with at least one of the heat medium passage and a heat medium in the heat medium passage and is connected to the separators to provide electrical conduction between the separators in the lamination direction. An electrical insulator is provided for insulation between the heat medium and the heat plate. Another heat medium passage may be provided on the other side. A temperature control system for the fuel cell may include a burner for supplying the heated heat medium to the heat medium passage and may comprise first and second fluidic passages independently to selectively use the first and second fluidic passage.Type: GrantFiled: June 9, 2004Date of Patent: December 25, 2007Assignee: Honda Motor Co., Ltd.Inventors: Naoyuki Enjoji, Yoshinori Wariishi, Kazuya Sasamoto, Yuichiro Kosaka
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Patent number: 7306873Abstract: A fuel cell includes an electrolyte electrode assembly and a pair of first and second separators. First through fourth oxygen-containing gas holes, first through fourth coolant holes, and first through fourth fuel gas holes extend through the fuel cell. The first through fourth oxygen-containing gas holes are selectively used as oxygen-containing gas supply ports or oxygen-containing gas discharge ports to change the flow direction of an oxygen-containing gas in an oxygen-containing gas flow field continuously.Type: GrantFiled: August 15, 2003Date of Patent: December 11, 2007Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Yoshinori Wariishi, Naoyuki Enjoji, Masaharu Suzuki, Yuichiro Kosaka
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Patent number: 7226688Abstract: A fuel gas inlet is provided at an outer circumferential edge portion of a second separator. First fuel gas flow passage grooves for supplying a fuel gas to an anode electrode are formed on a side of a surface of the second separator. First fuel gas connecting flow passages, which make communication between the fuel gas inlet and the first fuel gas flow passage grooves, include flow passage grooves which are provided on a side of a surface, and through-holes which penetrate through the second separator to make communication with the first fuel gas flow passage grooves. Accordingly, excellent sealing performance is ensured with a simple structure, and it is possible to realize a thin-walled fuel cell.Type: GrantFiled: October 3, 2003Date of Patent: June 5, 2007Assignee: Honda Motor Co., Ltd.Inventors: Yosuke Fujii, Noriaki Osao, Yoshinori Wariishi, Takaki Nakagawa, Hiroshi Shinkai, Katsumi Hayashi
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Patent number: 7201990Abstract: An intermediate plate is interposed between first and second sub-stacks. The intermediate plate has, defined in a surface thereof, an oxygen-containing gas mixing passage interconnecting an oxygen-containing gas outlet in the first sub-stack which is located upstream and an oxygen-containing gas inlet in the second sub-stack which is located downstream. In the first and second sub-stacks, an oxygen-containing gas is supplied from the oxygen-containing gas inlet and discharged to the oxygen-containing gas outlet at all times.Type: GrantFiled: September 17, 2002Date of Patent: April 10, 2007Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Yoshinori Wariishi, Masaharu Suzuki, Hideaki Kikuchi, Narutoshi Sugita, Ichiro Baba, Ken Takahashi, Seiji Sugiura, Yosuke Fujii, Daisuke Wachi
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Patent number: 7201981Abstract: A fuel cell stack is formed by stacking a plurality of fuel cells. A heating mechanism is provided for heating an outermost fuel cell by external electrical energy. A power generation circuit including electric heaters corresponding to the fuel cells is provided. Further, a switching mechanism including switches for selectively connecting the fuel cells to the power generation circuit or selectively disconnecting the fuel cells from the power generation circuit is provided.Type: GrantFiled: November 18, 2003Date of Patent: April 10, 2007Assignee: Honda Motor Co., Ltd.Inventors: Naoyuki Enjoji, Toshiaki Ariyoshi, Yuichiro Kosaka, Kazuya Sasamoto, Yoshinori Wariishi
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Patent number: 7174977Abstract: A fuel cell system incorporated in a vehicle has a main electric motor, a drive power transmitting mechanism for engaging and disengaging a fuel gas pump, a coolant fluid pump, a supercharger, and a compressor, which serve as auxiliary equipment, and transmitting a drive power to the auxiliary equipment, and an auxiliary electric motor coaxially connectable to the main electric motor for transmitting a drive power to the auxiliary equipment depending on the manner in which the vehicle is operated.Type: GrantFiled: February 5, 2003Date of Patent: February 13, 2007Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Naoyuki Enjoji, Masaharu Suzuki, Hideaki Kikuchi, Yoshinori Wariishi, Masaru Oda
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Patent number: 7093792Abstract: An upper wing surface of a laminar-flow airfoil for decreasing an undesirable head-lowering pitching moment around an aerodynamic center of the airfoil. The upper wing surface includes: a convex front profile portion extending from a leading edge to a largest-thickness point located corresponding to 38% of a wing chord length. A convex central profile portion extends from the largest-thickness point to a position corresponding to 90% of the wing chord length at which a value obtained by dividing a thicknesswise difference between the position and the largest-thickness point by a distance in a direction of the wing chord from the largest-thickness point is equal to or smaller than 0.12. A concave rear profile portion extends from a position corresponding to 95% of the wing chord length to the trailing edge. The rear profile portion forms a pressure gradient is steeper than that formed by the central profile portion.Type: GrantFiled: February 27, 2003Date of Patent: August 22, 2006Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Michimasa Fujino, Yoshinori Wariishi
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Patent number: 7090941Abstract: A cell assembly is formed by stacking a first cell and a second cell. In the cell assembly, oxygen-containing gas flow passages are connected in series by an intermediate oxygen-containing gas flow passage, and fuel gas flow passages are connected in series by an intermediate fuel gas flow passage. An additional oxygen-containing gas is supplied to an oxygen-containing gas passage which includes the intermediate oxygen-containing gas flow passage. An additional fuel gas is supplied to a fuel gas passage which includes the intermediate fuel gas flow passage.Type: GrantFiled: September 13, 2002Date of Patent: August 15, 2006Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Ichiro Baba, Yosuke Fujii, Ken Takahashi, Daisuke Wachi, Hiromichi Yoshida, Takaki Nakagawa, Yoshinori Wariishi, Masaharu Suzuki, Seiji Sugiura, Narutoshi Sugita, Hideaki Kikuchi
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Patent number: 7018733Abstract: A unit cell has a membrane electrode assembly. The membrane electrode assembly includes a cathode, and an anode, and a solid polymer electrolyte fuel cell interposed between the cathode and the anode. The membrane electrode assembly is interposed between a first separator and a second separator. A thin cooling plate is interposed between the second separator and another first separator. A first coolant flow passage and a second coolant flow passage are formed on both surfaces of the cooling plate. The coolant flows along one surface of the cooling plate, and turns back at an end of the cooling plate to flow along the other surface of the cooling plate.Type: GrantFiled: October 9, 2002Date of Patent: March 28, 2006Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Seiji Sugiura, Masaharu Suzuki, Tetsuya Koido, Yoshinori Wariishi, Yosuke Fujii, Takaki Nakagawa
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Patent number: 6969564Abstract: A cell assembly has reactant gas passages connected in series in first and second unit cells, and oxygen-containing gas inlets, intermediate oxygen-containing gas inlets, oxygen-containing gas outlets, intermediate oxygen-containing gas outlets which are defined in the first and second unit cells. The oxygen-containing gas inlets and the intermediate oxygen-containing gas inlets are disposed upwardly of the oxygen-containing gas outlets and the intermediate oxygen-containing gas outlets. The oxygen-containing gas outlets and the intermediate oxygen-containing gas outlets are disposed at least partly below electric energy generating surfaces of the first and second unit cells.Type: GrantFiled: September 12, 2002Date of Patent: November 29, 2005Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Yoshinori Wariishi, Narutoshi Sugita, Masaharu Suzuki, Seiji Sugiura, Daisuke Wachi, Yosuke Fujii
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Patent number: 6964824Abstract: A fuel cell includes an electrolyte electrode assembly and a pair of first and second separators. First through fourth oxygen-containing gas holes, first through fourth coolant holes, and first through fourth fuel gas holes extend through the fuel cell. The first through fourth oxygen-containing gas holes are selectively used as an oxygen-containing gas supply port or an oxygen-containing gas discharge port to cause an oxygen-containing gas to flow circularly along an electrode surface in an oxygen-containing gas flow field.Type: GrantFiled: August 15, 2003Date of Patent: November 15, 2005Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Naoyuki Enjoji, Yoshinori Wariishi, Masaharu Suzuki, Yuichiro Kosaka
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Publication number: 20050233181Abstract: A cell assembly (10) includes a first unit cell (12) and a second unit cell (14). The first unit cell (12) and the second unit cell (14) are juxtaposed such that electrode surfaces of the first unit cell (12) and electrode surfaces of the second unit cell (14) are aligned in parallel with each other. An oxygen-containing gas flow passage (32) includes a first oxygen-containing gas passage (38) in the first unit cell (12), an oxygen-containing gas connection passage (40) in a connection passage member (16), and a second oxygen-containing gas passage (42) in the second unit cell (14). The first oxygen-containing gas passage (38), the oxygen-containing gas connection passage (40), and the second oxygen-containing gas passage (42) are connected serially from the first unit cell (12) to the second unit cell (14).Type: ApplicationFiled: June 26, 2003Publication date: October 20, 2005Applicant: Honda Giken Kogyo Kabushiki KaishaInventors: Yoshinori Wariishi, Naoyuki Enjoji, Yoichi Asano, Hiroshi Shinkai