Patents by Inventor Jihui Yang

Jihui Yang 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).

  • Publication number: 20080311466
    Abstract: A method of controlling a temperature of a battery is disclosed. The method includes providing a thermoelectric device in thermally-conductive contact with the battery, measuring an actual temperature of the battery, comparing the actual temperature of the battery to a reference temperature for the battery, heating the battery by operation of the thermoelectric device when the actual temperature is less than the reference temperature and cooling the battery by operation of the thermoelectric device when the actual temperature exceeds the reference temperature.
    Type: Application
    Filed: February 6, 2007
    Publication date: December 18, 2008
    Applicant: General Motors Corporation
    Inventors: Jihui Yang, Kelly B. Ledbetter, Francis R. Stabler, David S. Scott
  • Patent number: 7443003
    Abstract: An information storage device includes a substrate and a shape memory alloy film established on the substrate. The shape memory alloy film may receive, supply, and store digital information. One or more thermoelectric modules is/are nanoimprinted between the substrate and the shape memory alloy film. The thermoelectric modules(s) is adapted to selectively erase at least some of the digital information from the shape memory alloy film.
    Type: Grant
    Filed: October 12, 2005
    Date of Patent: October 28, 2008
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Jihui Yang, Dexter D. Snyder, Yang-Tse Cheng
  • Patent number: 7405013
    Abstract: A method of generating electrical current in a system comprising a power-plant unit and/or hydrogen storage medium by transferring heat generated by the hydrogen storage medium and/or power-plant unit to a thermoelectric device, and converting the heat to generate electrical current using the thermoelectric device.
    Type: Grant
    Filed: June 6, 2005
    Date of Patent: July 29, 2008
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Jihui Yang, Mark W. Verbrugge, Jan F. Herbst
  • Patent number: 7321157
    Abstract: A method of fabricating a CoSb3-based thermoelectric device is disclosed. The method includes providing a high-temperature electrode, providing a buffer layer on the high-temperature electrode, forming composite n-type and p-type layers, attaching the buffer layer to the composite n-type and p-type layers, providing a low-temperature electrode on the composite n-type and p-type layers and separating the composite n-type and p-type layers from each other to define n-type and p-type legs between the high-temperature electrode and the low-temperature electrode.
    Type: Grant
    Filed: April 1, 2005
    Date of Patent: January 22, 2008
    Assignees: GM Global Technology Operations, Inc., Dalian Institute of Chemical Physics, Chinese Academy of Sciences
    Inventors: Lidong Chen, Junfeng Fan, Shengqiang Bai, Jihui Yang
  • Publication number: 20070081444
    Abstract: An information storage device includes a substrate and a shape memory alloy film established on the substrate. The shape memory alloy film may receive, supply, and store digital information. One or more thermoelectric modules is/are nanoimprinted between the substrate and the shape memory alloy film. The thermoelectric module(s) is adapted to selectively erase at least some of the digital information from the shape memory alloy film.
    Type: Application
    Filed: October 12, 2005
    Publication date: April 12, 2007
    Inventors: Jihui Yang, Dexter Snyder, Yang-Tse Cheng
  • Publication number: 20060185710
    Abstract: A thermoelectric device includes a nanocomposite material with nanowires of at least one thermoelectric material having a predetermined figure of merit, the nanowires being formed in a porous substrate having a low thermal conductivity and having an average pore diameter ranging from about 4 nm to about 300 nm.
    Type: Application
    Filed: February 15, 2006
    Publication date: August 24, 2006
    Inventors: Jihui Yang, Dexter Snyder
  • Publication number: 20060157908
    Abstract: A fixture device generally includes a base member, a reconfigurable pad comprising a shape memory material configured to selectively conform to a surface contour of a workpiece, and a thermoelectric unit in operative communication with the shape memory material of the reconfigurable pad. A process for operating a fixture device includes passing a current in a first direction through a thermoelectric unit in operative communication with a reconfigurable pad in an amount effective to heat a shape memory material therein to or above a shape setting temperature, contacting a surface of a workpiece with the reconfigurable pad, cooling the shape memory material below the shape setting temperature, and fixturing the workpiece with the fixture device.
    Type: Application
    Filed: January 19, 2006
    Publication date: July 20, 2006
    Inventors: Mark Verbrugge, Jihui Yang, Yang Cheng, Michael Lukitsch, Alan Browne, Nilesh Mankame
  • Patent number: 7051522
    Abstract: A method for controlling temperature of a catalytic converter in an automobile exhaust system is disclosed. The method includes establishing a reference temperature for the catalytic converter, distributing a stream of exhaust gases through the catalytic converter, obtaining a measured temperature of the catalytic converter and converting thermal energy from the stream of exhaust gases into electrical energy when the measured temperature exceeds the reference temperature. An apparatus for controlling temperature of a catalytic converter in an automobile exhaust system is also disclosed.
    Type: Grant
    Filed: June 4, 2004
    Date of Patent: May 30, 2006
    Assignee: General Motors Corporation
    Inventors: Jihui Yang, Mei Cai, Francis R. Stabler
  • Publication number: 20060066106
    Abstract: An auxiliary electrical power supply includes a fuel combustor passively sourced with fuel for combusting fuel and a thermoelectric generator close-coupled to the combustor for converting the heat from the combustor to electric power.
    Type: Application
    Filed: September 14, 2005
    Publication date: March 30, 2006
    Inventors: Jihui Yang, Michael Matouka, Francis Stabler
  • Publication number: 20060028182
    Abstract: A method of controlling a temperature of a battery is disclosed. The method includes providing a thermoelectric device in thermally-conductive contact with the battery, measuring an actual temperature of the battery, comparing the actual temperature of the battery to a reference temperature for the battery, heating the battery by operation of the thermoelectric device when the actual temperature is less than the reference temperature and cooling the battery by operation of the thermoelectric device when the actual temperature exceeds the reference temperature.
    Type: Application
    Filed: January 4, 2005
    Publication date: February 9, 2006
    Inventors: Jihui Yang, Kelly Ledbetter, Francis Stabler
  • Publication number: 20060016470
    Abstract: A low-cost filled skutterudite for advanced thermoelectric applications is disclosed. The filled skutterudite uses the relatively low-cost mischmetal, either alone or in addition to rare earth elements, as a starting material for guest or filler atoms.
    Type: Application
    Filed: November 1, 2004
    Publication date: January 26, 2006
    Inventors: Jihui Yang, Gregory Meisner
  • Publication number: 20060017170
    Abstract: A method of fabricating a CoSb3-based thermoelectric device is disclosed. The method includes providing a high-temperature electrode, providing a buffer layer on the high-temperature electrode, forming composite n-type and p-type layers, attaching the buffer layer to the composite n-type and p-type layers, providing a low-temperature electrode on the composite n-type and p-type layers and separating the composite n-type and p-type layers from each other to define n-type and p-type legs between the high-temperature electrode and the low-temperature electrode.
    Type: Application
    Filed: April 1, 2005
    Publication date: January 26, 2006
    Inventors: Lidong Chen, Junfeng Fan, Shengqiang Bai, Jihui Yang
  • Publication number: 20060003193
    Abstract: A thermoelectric augmented fuel cell system is disclosed. The system includes a fuel cell stack for generating electrical power and a thermoelectric unit provided in thermal contact with the fuel cell stack for receiving thermal energy from the fuel cell stack and generating additional electrical power.
    Type: Application
    Filed: October 8, 2004
    Publication date: January 5, 2006
    Inventors: Francis Stabler, Jihui Yang
  • Publication number: 20050268598
    Abstract: A method for controlling temperature of a catalytic converter in an automobile exhaust system is disclosed. The method includes establishing a reference temperature for the catalytic converter, distributing a stream of exhaust gases through the catalytic converter, obtaining a measured temperature of the catalytic converter and converting thermal energy from the stream of exhaust gases into electrical energy when the measured temperature exceeds the reference temperature. An apparatus for controlling temperature of a catalytic converter in an automobile exhaust system is also disclosed.
    Type: Application
    Filed: June 4, 2004
    Publication date: December 8, 2005
    Inventors: Jihui Yang, Mei Cai, Francis Stabler
  • Publication number: 20050271916
    Abstract: A method of generating electrical current in a system comprising a power-plant unit and/or hydrogen storage medium by transferring heat generated by the hydrogen storage medium and/or power-plant unit to a thermoelectric device, and converting the heat to generate electrical current using the thermoelectric device.
    Type: Application
    Filed: June 6, 2005
    Publication date: December 8, 2005
    Inventors: Jihui Yang, Mark Verbrugge, Jan Herbst
  • Publication number: 20050241689
    Abstract: A method of improving the thermoelectric figure of merit (ZT) of a high-efficiency thermoelectric material is disclosed. The method includes the addition of fullerene (C60) clusters between the crystal grains of the material. It has been found that the lattice thermal conductivity (?L) of a thermoelectric material decreases with increasing fullerene concentration, due to enhanced phonon-large defect scattering. The resulting power factor (S2/?) decrease of the material is offset by the lattice thermal conductivity reduction, leading to enhanced ZT values at temperatures of between 350 degrees K and 700 degrees K.
    Type: Application
    Filed: April 30, 2004
    Publication date: November 3, 2005
    Inventors: Lidong Chen, Xun Shi, Jihui Yang, Gregory Meisner
  • Publication number: 20040112418
    Abstract: The present invention provides a thermoelectric material made from the ZrNiSn-based, half-Heusler structure where Pd is alloyed on the site of Ni, Hf alloyed on Zr, and Sb doped on Sn, all in accordance with the formula Zr0 5Hf0.5Ni1-xPdxSn0.99Sb0 01. The structure significantly increases the value of the figure of merit (ZT) by decreasing the structure's thermal conductivity, without significant increases to its Seebeck coefficient.
    Type: Application
    Filed: December 12, 2002
    Publication date: June 17, 2004
    Inventors: Jihui Yang, Lidong Chen, Gregory Paul Meisner, Ctirad Uher
  • Patent number: 6075437
    Abstract: A magnetic field sensor device is disclosed comprising two substantially identical n-doped, high carrier mobility semiconductor films (e.g., InSb films) each containing a pattern of cylindrical holes or antidots that cause the resistance of the respective films to vary depending upon the direction of the in-plane component of an applied magnetic field.
    Type: Grant
    Filed: March 9, 1998
    Date of Patent: June 13, 2000
    Assignee: General Motors Corporation
    Inventors: Joseph Pierre Heremans, Jihui Yang