Patents by Inventor Yoshirou Shimoyama
Yoshirou Shimoyama 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: 7402355Abstract: A cooling method for a fuel cell using a heat exchanger is provided. The method comprises the steps of: providing an ion exchanger in a circulation system for the cooling fluid; decreasing ion concentration in the cooling fluid by circulating the cooling fluid through the fuel cell and the ion exchanger when the temperature of the cooling fluid is below a thermostat operating temperature; distributing a portion of the cooling fluid discharged from the fuel cell, mixing the portion of the cooling fluid returning from the heat exchanger with another portion of the cooling fluid whose ion concentration has been decreased in the previous step, and returning the cooling fluid mixture to the fuel cell, when the temperature of the cooling fluid is approaching the thermostat operating temperature; and cooling the fuel cell by circulating the cooling fluid through the fuel cell and the heat exchanger after the temperature of the cooling fluid reaches the thermostat operating temperature.Type: GrantFiled: May 10, 2006Date of Patent: July 22, 2008Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Mitsuharu Imaseki, Takeshi Ushio, Yoshirou Shimoyama
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Patent number: 7358003Abstract: The cooling structure for a fuel cell vehicle comprises a fuel cell, a drive motor for driving the fuel cell vehicle using the energy generated by the fuel cell, a first cooling flow passage for cooling the fuel cell using a main radiator, and a second cooling flow passage for cooling the drive motor or the power control unit of the drive motor using auxiliary radiators. The main radiator is disposed in the central portion of the front surface of a vehicle body. The auxiliary radiators are respectively disposed on the front surface of the vehicle body in such a manner that their heat exchange surface are situated shifted in the vehicle-width direction so as to prevent them from being overlapped with the heat exchange surface of the main radiator.Type: GrantFiled: November 20, 2003Date of Patent: April 15, 2008Assignee: Honda Motor Co., Ltd.Inventors: Mitsuharu Imaseki, Yoshirou Shimoyama, Hiroyuki Hattori
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Patent number: 7294422Abstract: A cooling method for a fuel cell using a heat exchanger is provided. The method comprises the steps of: providing an ion exchanger in a circulation system for the cooling fluid; decreasing ion concentration in the cooling fluid by circulating the cooling fluid through the fuel cell and the ion exchanger when the temperature of the cooling fluid is below a thermostat operating temperature; distributing a portion of the cooling fluid discharged from the fuel cell, mixing the portion of the cooling fluid returning from the heat exchanger with another portion of the cooling fluid whose ion concentration has been decreased in the previous step, and returning the cooling fluid mixture to the fuel cell, when the temperature of the cooling fluid is approaching the thermostat operating temperature; and cooling the fuel cell by circulating the cooling fluid through the fuel cell and the heat exchanger after the temperature of the cooling fluid reaches the thermostat operating temperature.Type: GrantFiled: May 10, 2006Date of Patent: November 13, 2007Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Mitsuharu Imaseki, Takeshi Ushio, Yoshirou Shimoyama
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Publication number: 20060216554Abstract: A cooling method for a fuel cell using a heat exchanger is provided. The method comprises the steps of: providing an ion exchanger in a circulation system for the cooling fluid; decreasing ion concentration in the cooling fluid by circulating the cooling fluid through the fuel cell and the ion exchanger when the temperature of the cooling fluid is below a thermostat operating temperature; distributing a portion of the cooling fluid discharged from the fuel cell, mixing the portion of the cooling fluid returning from the heat exchanger with another portion of the cooling fluid whose ion concentration has been decreased in the previous step, and returning the cooling fluid mixture to the fuel cell, when the temperature of the cooling fluid is approaching the thermostat operating temperature; and cooling the fuel cell by circulating the cooling fluid through the fuel cell and the heat exchanger after the temperature of the cooling fluid reaches the thermostat operating temperature.Type: ApplicationFiled: May 10, 2006Publication date: September 28, 2006Applicant: Honda Giken Kogyo Kabushiki KaishaInventors: Mitsuharu Imaseki, Takeshi Ushio, Yoshirou Shimoyama
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Publication number: 20060204797Abstract: A cooling method for a fuel cell using a heat exchanger is provided. The method comprises the steps of: providing an ion exchanger in a circulation system for the cooling fluid; decreasing ion concentration in the cooling fluid by circulating the cooling fluid through the fuel cell and the ion exchanger when the temperature of the cooling fluid is below a thermostat operating temperature; distributing a portion of the cooling fluid discharged from the fuel cell, mixing the portion of the cooling fluid returning from the heat exchanger with another portion of the cooling fluid whose ion concentration has been decreased in the previous step, and returning the cooling fluid mixture to the fuel cell, when the temperature of the cooling fluid is approaching the thermostat operating temperature; and cooling the fuel cell by circulating the cooling fluid through the fuel cell and the heat exchanger after the temperature of the cooling fluid reaches the thermostat operating temperature.Type: ApplicationFiled: May 10, 2006Publication date: September 14, 2006Applicant: Honda Giken Kogyo Kabushiki KaishaInventors: Mitsuharu Imaseki, Takeshi Ushio, Yoshirou Shimoyama
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Patent number: 7070873Abstract: A cooling method for a fuel cell using a heat exchanger is provided. The method comprises the steps of: providing an ion exchanger in a circulation system for the cooling fluid; decreasing ion concentration in the cooling fluid by circulating the cooling fluid through the fuel cell and the ion exchanger when the temperature of the cooling fluid is below a thermostat operating temperature; distributing a portion of the cooling fluid discharged from the fuel cell, mixing the portion of the cooling fluid returning from the heat exchanger with another portion of the cooling fluid whose ion concentration has been decreased in the previous step, and returning the cooling fluid mixture to the fuel cell, when the temperature of the cooling fluid is approaching the thermostat operating temperature; and cooling the fuel cell by circulating the cooling fluid through the fuel cell and the heat exchanger after the temperature of the cooling fluid reaches the thermostat operating temperature.Type: GrantFiled: October 15, 2002Date of Patent: July 4, 2006Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Mitsuharu Imaseki, Takeshi Ushio, Yoshirou Shimoyama
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Patent number: 6905792Abstract: The present invention provides a cooling system of fuel cell, which solves the gas biting noise problem by trapping bubble in a coolant, gives protection to a stack (MEA) and the membrane of a humidifier by regulating the coolant pressure of fuel cell and improves the life of a ion exchanger by preventing foreign materials (carbonate ion etc.) from dissolving into the coolant.Type: GrantFiled: October 5, 2001Date of Patent: June 14, 2005Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Mitsuharu Imaseki, Takeshi Ushio, Yoshirou Shimoyama
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Publication number: 20030072981Abstract: A cooling method for a fuel cell using a heat exchanger is provided. The method comprises the steps of: providing an ion exchanger in a circulation system for the cooling fluid; decreasing ion concentration in the cooling fluid by circulating the cooling fluid through the fuel cell and the ion exchanger when the temperature of the cooling fluid is below a thermostat operating temperature; distributing a portion of the cooling fluid discharged from the fuel cell, mixing the portion of the cooling fluid returning from the heat exchanger with another portion of the cooling fluid whose ion concentration has been decreased in the previous step, and returning the cooling fluid mixture to the fuel cell, when the temperature of the cooling fluid is approaching the thermostat operating temperature; and cooling the fuel cell by circulating the cooling fluid through the fuel cell and the heat exchanger after the temperature of the cooling fluid reaches the thermostat operating temperature.Type: ApplicationFiled: October 15, 2002Publication date: April 17, 2003Applicant: HONDA GIKEN KOGYO KABUSHIKI KAISHAInventors: Mitsuharu Imaseki, Takeshi Ushio, Yoshirou Shimoyama
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Publication number: 20020061426Abstract: The present invention provides a cooling system of fuel cell, which solves the gas biting noise problem by trapping bubble in a coolant, gives protection to a stack (MEA) and the membrane of a humidifier by regulating the coolant pressure of fuel cell and improves the life of a ion exchanger by preventing foreign materials (carbonate ion etc.) from dissolving into the coolant.Type: ApplicationFiled: October 5, 2001Publication date: May 23, 2002Applicant: Honda Giken Kogyo Kabushiki KaishaInventors: Mitsuharu Imaseki, Takeshi Ushio, Yoshirou Shimoyama