Patents by Inventor Michihiko Matsumoto
Michihiko Matsumoto 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: 9685669Abstract: A power generation characteristic estimation device for fuel cell includes a reference characteristic setting unit for setting a reference power generation characteristic of a fuel cell, a current detection unit for detecting an actual current of the fuel cell, a voltage detection unit for detecting an actual voltage of the fuel cell, and a characteristic estimation unit for estimating an actual power generation characteristic of the fuel cell based on a voltage difference between a voltage on the reference power generation characteristic and an actual voltage at the actual current. The characteristic estimation unit estimates the power generation characteristic during a warm-up operation of the fuel cell when a pressure of a gas supplied to the fuel cell is not lower than a predetermined value.Type: GrantFiled: August 14, 2012Date of Patent: June 20, 2017Assignee: NISSAN MOTOR CO., LTD.Inventor: Michihiko Matsumoto
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Publication number: 20170170495Abstract: A wet state control device for fuel cell includes a priority control unit for preferentially controlling either one of a pressure and a flow rate of cathode gas when a wet state of a fuel cell is adjusted, a water temperature control unit for controlling a temperature of cooling water when the wet state of the fuel cell is not completely adjustable by a control of the priority control unit, and a complementary control unit for controlling the other of the pressure and the flow rate of the cathode gas to complement a response delay of the water temperature control unit.Type: ApplicationFiled: February 28, 2017Publication date: June 15, 2017Applicant: NISSAN MOTOR CO., LTD.Inventors: Tetsuya AOKI, Michihiko Matsumoto
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Patent number: 9680167Abstract: A system for adjusting temperature of cooling-liquid comprises: a radiator; a cooling-liquid circulation flow-channel; a radiator bypass flow-channel; a thermostat valve; and a valve bypass flow-channel through which the cooling-liquid of the radiator bypass flow-channel is allowed to flow in a predetermined amount even if the thermostat valve is completely closed.Type: GrantFiled: June 14, 2012Date of Patent: June 13, 2017Assignee: NISSAN MOTOR CO., LTD.Inventors: Hayato Chikugo, Michihiko Matsumoto, Tetsuya Aoki, Masato Odashima, Shinichiro Takemoto
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Patent number: 9620797Abstract: A wet state control device for fuel cell includes a priority control unit for preferentially controlling either one of a pressure and a flow rate of cathode gas when a wet state of a fuel cell is adjusted, a water temperature control unit for controlling a temperature of cooling water when the wet state of the fuel cell is not completely adjustable by a control of the priority control unit, and a complementary control unit for controlling the other of the pressure and the flow rate of the cathode gas to complement a response delay of the water temperature control unit.Type: GrantFiled: April 19, 2012Date of Patent: April 11, 2017Assignee: NISSAN MOTOR CO., LTD.Inventors: Tetsuya Aoki, Michihiko Matsumoto
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Publication number: 20170089984Abstract: An impedance measuring device includes power supply means configured to output an alternating current to a positive electrode and a negative electrode of a laminated battery and detection means configured to detect at least one of an alternating-current potential difference between the positive electrode and an intermediate point of the laminated battery and an alternating-current potential difference between the negative electrode and the intermediate point of the laminated battery. The impedance measuring device includes computation means configured to compute an impedance of the laminated battery on the basis of the alternating-current potential difference detected by the detection means and the alternating current output from the power supply means, and an element having an impedance of a prescribed value necessary to calculate a measurement error of the impedance.Type: ApplicationFiled: March 26, 2014Publication date: March 30, 2017Applicant: NISSAN MOTOR CO., LTD.Inventors: Masanobu SAKAI, Michihiko MATSUMOTO, Tetsuya AOKI
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Patent number: 9605470Abstract: A protector with a sensor is installed on a sliding door for detecting an object by touch between two core wires in a hollow part. In a terminal part of the protector with the sensor, the core wires drawn out are connected with legs of a resistor. A primary seal is formed by grinding a surface of the hollow part of the terminal part of an extrusion molded part, positioning a ground part on a die and covering wire connection parts and a side of another end of an insert while also covering the ground part by means of injection molding. A secondary seal is formed by means of the injection molding for coating a part formed with the primary seal for forming an external shape of a product.Type: GrantFiled: March 5, 2015Date of Patent: March 28, 2017Assignee: NISHIKAWA RUBBER CO., LTD.Inventors: Michihiko Matsumoto, Yuzo Hirakawa
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Patent number: 9605473Abstract: A protector with a sensor is installed on a sliding door for detecting an object by touch between two core wires in a hollow part. In a terminal part of the protector with the sensor, the core wires drawn out are connected with leads joined with a control unit. A primary seal is formed by means of injection molding for covering wire connection parts and another end side of an insert while also covering a skin of a wire harness which ties and coats the two leads. A secondary seal is formed by means of the injection molding for coating a part formed with the primary seal and for forming an external shape of a product.Type: GrantFiled: March 5, 2015Date of Patent: March 28, 2017Assignee: NISHIKAWA RUBBER CO., LTD.Inventors: Michihiko Matsumoto, Yuzo Hirakawa
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Patent number: 9601790Abstract: In a fuel cell system which executes a stop process of stopping an output from a fuel cell when a required power generation amount for the fuel cell is smaller than a predetermined power generation amount and supplies oxidant during a stop process period, fuel gas is intermittently supplied to a fuel electrode at a basic supply interval, which is set in advance and at which carbon dioxide is not generated in an oxidant electrode, during the stop process period.Type: GrantFiled: April 3, 2012Date of Patent: March 21, 2017Assignee: NISSAN MOTOR CO., LTD.Inventors: Shinichi Makino, Yasushi Ichikawa, Michihiko Matsumoto, Mitsunori Kumada, Yoshitomo Asai
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Publication number: 20170072777Abstract: A structure of an end part of a weather strip is for use on a space in which a flange breaks off. The flange is on a door of an automobile. The weather strip is formed by integrally molding a hollow part with an installation base member having a U-shaped cross section. The weather strip has an insert buried therein. The insert has a convex formed thereon. The convex extends in a longitudinal direction of the weather strip. A concave of the installation base member on the end part of the weather strip formed by extrusion molding is fit on the convex, and die molding material integrally connects the end part of the weather strip formed by extrusion molding and the insert.Type: ApplicationFiled: September 6, 2016Publication date: March 16, 2017Inventors: Toshimichi KAWAGUCHI, Michihiko MATSUMOTO
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Publication number: 20170045588Abstract: An impedance measuring device outputs an alternating current of a prescribed frequency to each of a positive electrode terminal and a negative electrode terminal of a laminated type battery and detects an alternating-current potential difference between the positive electrode terminal and an intermediate-point terminal and an alternating-current potential difference between the negative electrode terminal and the intermediate-point terminal. The impedance measuring device adjusts an amplitude of the alternating current such that the alternating-current potential difference between the positive electrode terminal and the intermediate-point terminal and the alternating-current potential difference between the negative electrode terminal and the intermediate-point terminal coincide, and computes an impedance on the basis of the adjusted alternating current and alternating-current potential differences.Type: ApplicationFiled: January 7, 2015Publication date: February 16, 2017Applicant: NISSAN MOTOR CO., LTD.Inventors: Tetsuya AOKI, Masanobu SAKAI, Michihiko MATSUMOTO, Hidetaka NISHIMURA, Masashi SATO
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Publication number: 20170012305Abstract: A fuel cell system includes a fuel cell for generating electrical power upon being supplied with anode gas and cathode gas. The fuel cell system includes a wetness control state determination unit that determines whether or not a wetness control of controlling a degree of wetness of an electrolyte membrane of the fuel cell is normally executed, a combined capacitance calculation unit that calculates a combined capacitance of the fuel cell, and an anode gas concentration control unit that determines the occurrence of decrease in an anode gas concentration in the fuel cell or executes a control for increasing the anode gas concentration if the combined capacitance of the fuel cell is smaller than a predetermined value when the wetness control is determined to be normally executed.Type: ApplicationFiled: December 15, 2014Publication date: January 12, 2017Applicant: NISSAN MOTOR CO., LTD.Inventors: Tetsuya AOKI, Michihiko MATSUMOTO, Youhei KANEKO
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Publication number: 20160356858Abstract: An impedance measuring device outputs an alternating current of a prescribed frequency to a positive electrode terminal and a negative electrode terminal of the laminated type battery. The impedance measuring device detects an alternating-current potential difference between the positive electrode terminal and an intermediate-point terminal, and an alternating-current potential difference between the negative electrode terminal and the intermediate-point terminal. The impedance measuring device adjusts an amplitude of the alternating current such that the alternating-current potential difference between the positive electrode terminal and the intermediate-point terminal, and the alternating-current potential difference between the negative electrode terminal and the intermediate-point terminal coincide. The impedance measuring device computes an impedance of the laminated type battery on the basis of the alternating current adjusted and the alternating-current potential difference.Type: ApplicationFiled: February 19, 2014Publication date: December 8, 2016Applicant: NISSAN MOTOR CO., LTD.Inventors: Masanobu SAKAI, Tetsuya AOKI, Hidetaka NISHIMURA, Masashi SATO, Michihiko MATSUMOTO
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Patent number: 9441408Abstract: A protector having a hollow part with a sensor that detects an object between two conductive parts. The two conductive parts having a space therebetween. The hollow part has a wall having a horseshoe shaped cross section. Both ends of the wall are connected with an installation base member. The two conductive parts including a conductive part having a convex shape and a conductive part having a concave shape. The conductive parts are positioned in a manner such that the space substantially has a V-shaped cross section and a uniform width in cross section. Both ends of the V-shaped cross section terminate on an inner surface of the wall.Type: GrantFiled: March 5, 2015Date of Patent: September 13, 2016Assignee: NISHIKAWA RUBBER CO., LTD.Inventors: Michihiko Matsumoto, Eiichi Baba
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Publication number: 20160248107Abstract: A fuel cell system configured to generate an electric power by supplying an anode gas and a cathode gas to a fuel cell includes: a connection line configured to connect the fuel cell to an electric load; a converter connected to the connection line and a battery, the converter being configured to adjust a voltage of the connection line; a target output current calculating unit configured to calculate a target output current of the fuel cell in accordance with a load of the electric load; a converter control unit configured to carry out a switching control for the converter in accordance with the target output current; and a flow rate control unit configured to control a flow rate of the cathode gas to be supplied to the fuel cell in accordance with the target output current.Type: ApplicationFiled: September 10, 2014Publication date: August 25, 2016Applicant: NISSAN MOTOR CO., LTD.Inventor: Michihiko MATSUMOTO
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Publication number: 20160144802Abstract: A protector with a sensor comprises: a hollow part; and an installation base member formed on the hollow part. In the hollow part, a plurality of conductive parts have core wires embedded therein respectively and a space is positioned between the plurality of conductive parts. The plurality of conductive parts include: a conductive part on a lower part of the hollow part as a side of the installation base member; and a conductive part on an upper part of the hollow part separated from the side of the installation base member by the space. The hollow part includes: an oblique side on an inner-cabin side extending from an inner-cabin side end connected with the installation base member to a tip; and an oblique side on an outer-cabin side extending from an outer-cabin side end connected with the installation base member to the tip.Type: ApplicationFiled: November 16, 2015Publication date: May 26, 2016Inventors: Yuzo HIRAKAWA, Michihiko MATSUMOTO, Hironori KOEDA, Tomoki KAMEYAMA
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Patent number: 9246182Abstract: A power generation control device 3 for a fuel cell 1 of the present invention comprises: a target generated power calculating unit 31 configured to calculate target generated power of the fuel cell 1, based on a load condition of an electrical load device connected to the fuel cell 1; a target generated current calculating unit 34 configured to calculate a target generated current to be taken out of the fuel cell 1, based on the target generated power; a current change rate limit value calculating unit 35 configured to calculate a limit value for a rate of change in the target generated current, based on an operating condition parameter correlated with an operating temperature of the fuel cell 1; and a current limiting unit 37 configured to limit the target generated current so that the rate of change in the target generated current does not exceed the limit value calculated by the current change rate limit value calculating unit 35.Type: GrantFiled: October 28, 2009Date of Patent: January 26, 2016Assignee: NISSAN MOTOR CO., LTD.Inventors: Michihiko Matsumoto, Keisuke Suzuki
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Publication number: 20150267462Abstract: A protector with a sensor is installed on a sliding door for detecting an object by touch between two core wires in a hollow part. In a terminal part of the protector with the sensor, the core wires drawn out are connected with leads joined with a control unit. A primary seal is formed by means of injection molding for covering wire connection parts and another end side of an insert while also covering a skin of a wire harness which ties and coats the two leads. A secondary seal is formed by means of the injection molding for coating a part formed with the primary seal and for forming an external shape of a product.Type: ApplicationFiled: March 5, 2015Publication date: September 24, 2015Inventors: Michihiko MATSUMOTO, Yuzo HIRAKAWA
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Publication number: 20150267457Abstract: A protector with a sensor is installed on a sliding door for detecting an object by touch between two core wires in a hollow part. In a terminal part of the protector with the sensor, the core wires drawn out are connected with legs of a resistor. A primary seal is formed by grinding a surface of the hollow part of the terminal part of an extrusion molded part, positioning a ground part on a die and covering wire connection parts and a side of another end of an insert while also covering the ground part by means of injection molding. A secondary seal is formed by means of the injection molding for coating a part formed with the primary seal for forming an external shape of a product.Type: ApplicationFiled: March 5, 2015Publication date: September 24, 2015Inventors: Michihiko MATSUMOTO, Yuzo HIRAKAWA
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Publication number: 20150267453Abstract: A protector with a sensor detects an object by touch between two conductive parts in a hollow part with a space therebetween. An outer peripheral surface of the hollow part is an outer coat substantially having a horseshoe shaped cross section. Both ends of the outer coat are connected with the installation base member. The two conductive parts including a conductive part having a convex shape on a lower part of the hollow part and a conductive part having a concave shape on an upper part of the hollow part are shaped and positioned in a manner that the space substantially has a V-shaped cross section and a uniform width in cross section, an opening of the V-shaped cross section faces a side of said installation base member, and both ends of the V-shaped cross section are continuously provided on an inner surface of the outer coat.Type: ApplicationFiled: March 5, 2015Publication date: September 24, 2015Inventors: Michihiko MATSUMOTO, Eiichi BABA
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Patent number: 8882186Abstract: A tangent 140 on a contact part 80 on which a hollow seal member 32 of a weather strip 30 mounted on a side door 21 first touches a roof door 23 is a straight line which divides an angle ?2 on an acute angle side between an advancing locus 110 of the side door 21 and an advancing locus 120 of a roof door 23 into a substantially half angle ?1, the two advancing loci intersecting on the contact part 80.Type: GrantFiled: April 22, 2013Date of Patent: November 11, 2014Assignee: Nishikawa Rubber Co., LtdInventors: Michihiko Matsumoto, Eiichi Baba, Kenichi Kitayama