Patents by Inventor Hongjie Wu

Hongjie Wu 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: 20180065489
    Abstract: A vehicle may include an electric drive system including switches having gates configured to control the switches. The vehicle may include a galvanic isolation coupling having a primary side electrically connected with an input power source and a secondary side electrically connected with a gate driver circuit. The gat driver circuit has a controller configured to actuate the gates and a power supply circuit electrically connected to the controller to provide backup power. The galvanic isolation coupling may be a flyback converter.
    Type: Application
    Filed: September 6, 2016
    Publication date: March 8, 2018
    Inventors: Yan Zhou, Shuitao Yang, Lihua Chen, Yuqing Tang, Hongjie Wu
  • Publication number: 20170355267
    Abstract: A DC link capacitor coupled to positive and negative DC busses between a high voltage DC source and an electric vehicle inverter is quickly discharged during a shutdown. An active discharge circuit connected across the link capacitor has a discharge resistor in series with a discharge switch. The discharge switch has a control terminal for selectably turning the discharge switch on and off. A disable circuit is coupled to the control terminal and is responsive to a disable command signal to turn off the discharge switch. The disable circuit turns on the discharge switch upon cessation of the disable command signal. A timing circuit powered by a voltage from the link capacitor initiates a predetermined time interval upon cessation of the disable command signal, and continuously turns off the discharge switch after the predetermined time interval while the voltage from the link capacitor remains above a threshold.
    Type: Application
    Filed: June 14, 2016
    Publication date: December 14, 2017
    Inventors: YAN ZHOU, YUQING TANG, HONGJIE WU, LIHUA CHEN, SHAHRAM ZAREI
  • Patent number: 9815456
    Abstract: A vehicle includes a transmission, a motor, and at least one controller. The motor is configured to be selectively coupled to the transmission. The at least one controller is programmed to output a fault for a coil temperature sensor of the motor based on an oil temperature of the transmission, a phase current of the motor, and a temperature change in a coil of the motor.
    Type: Grant
    Filed: November 13, 2014
    Date of Patent: November 14, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Hongjie Wu, Yuqing Tang, Shahram Zarei
  • Patent number: 9381819
    Abstract: An apparatus for charging and discharging an electrical device in a vehicle is provided with a first power source for providing low voltage energy and a second power source for providing high voltage energy. A switch enables/disables the first power source. A first contactor includes a first winding connected to the first power source and a first switch connected to the second power source. The first contactor enables the second power source to provide the HV energy for charging the electrical device in response to the switch enabling the first power source. A second contactor includes a second winding connected to the first power source for receiving the LV energy and a second switch connected to the second power source for receiving the HV energy. The second contactor is in an open state in response to the switch enabling the first power source.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: July 5, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Hongjie Wu, Yuqing Tang
  • Publication number: 20160137192
    Abstract: A vehicle includes a transmission, a motor, and at least one controller. The motor is configured to be selectively coupled to the transmission. The at least one controller is programed to output a fault for a coil temperature sensor of the motor based on an oil temperature of the transmission, a phase current of the motor, and a temperature change in a coil of the motor.
    Type: Application
    Filed: November 13, 2014
    Publication date: May 19, 2016
    Inventors: Hongjie WU, Yuqing TANG, Shahram ZAREI
  • Publication number: 20160099665
    Abstract: A hybrid electric vehicle includes a traction battery, traction motor and power inverter therebetween. The power inverter converts the DC power of the traction battery to AC power to drive each phase of the traction motor. The power inverter includes Insulated Gate Bipolar junction Transistors (IGBTs) to modulate the power to the traction motor. The speed at which the IGBTs are modulated impacts the system performance including power loss, voltage overshoot and current overshoot. Using a dual emitter IGBT to provide a current mirror of the drive current, circuitry may be used with the gate drive circuitry such that the gate drive speed may be dynamically adjusted based on characteristics including temperature and traction motor rotational speed.
    Type: Application
    Filed: October 6, 2014
    Publication date: April 7, 2016
    Inventors: Lihua Chen, Dong Cao, Shailesh Shrikant Kozarekar, Shahram Zarei, Hongjie Wu, Yuqing Tang
  • Publication number: 20160085798
    Abstract: According to an embodiment, in a first storing system, a record corresponding to an account number ID is stored. In the record, a primary key is the account number ID, and a value is an account number mode and an account number name of the account number. The second storing system obtains the account number and the account number ID from the first storing system, determines whether the account number satisfies the preset reverse-searching condition. If yes, the second storing system generates and stores a record. In the record, a primary key is the account number mode and the account number name of the account number, and a value is the account number ID.
    Type: Application
    Filed: December 8, 2015
    Publication date: March 24, 2016
    Inventors: Hongjie WU, Zhongwei LI, Ming TIAN
  • Patent number: 9274158
    Abstract: Apparatus and methods for detection of a ground fault on a DC side as well as on an AC side of an inverter are presented. A detection means can receive forward and reverse current and provide an induced current based on the difference between them. A parameter associated with the induced current, or a parameter associated with a voltage generated by conduction of the induced current through a device, can be used to detect a ground fault. In addition, a detection means can be configured to receive transient current, and a resulting voltage at the detection means can be used for fault detection. A detection means can be disposed at the DC side of an inverter or at the AC side of the inverter. Apparatus and methods can be configured to detect AC leakage current caused by a ground fault.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: March 1, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Yuqing Tang, Hongjie Wu
  • Publication number: 20150256502
    Abstract: Embodiments of the present invention disclose a method and system for processing social network information. The method includes: establishing a list of posted information for each user; adding received newly-posted information of a user to the list of posted information of the corresponding user; acquiring, after receiving an access request of a client, the list of associated users of a user designated in the access request; separately reading a predetermined amount of information from the list of posted information of each user in the list of associated users; and returning all the read information posted by the associated users to the client.
    Type: Application
    Filed: May 21, 2015
    Publication date: September 10, 2015
    Inventors: Hongjie WU, Ming TIAN, Zhongwei LI
  • Patent number: 9130487
    Abstract: A hybrid-electric vehicle and method of controlling a hybrid-vehicle is provided. The vehicle includes a traction battery, at least one electric-machine, and a controller. The controller is configured to alter a voltage between the battery and the electric-machine based on a measured voltage of the battery or the high voltage bus. In response to an indication that the measured voltage is faulty during a drive cycle, the controller instead alters the voltage between the battery and the electric machine based on a substituted battery voltage signal such that the electric-machine remains operable for the drive cycle.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: September 8, 2015
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Rimma Isayeva, David Crist Gabriel, Michael W. Degner, Yuqing Tang, Hongjie Wu
  • Publication number: 20140132278
    Abstract: Apparatus and methods for detection of a ground fault on a DC side as well as on an AC side of an inverter are presented. A detection means can receive forward and reverse current and provide an induced current based on the difference between them. A parameter associated with the induced current, or a parameter associated with a voltage generated by conduction of the induced current through a device, can be used to detect a ground fault. In addition, a detection means can be configured to receive transient current, and a resulting voltage at the detection means can be used for fault detection. A detection means can be disposed at the DC side of an inverter or at the AC side of the inverter. Apparatus and methods can be configured to detect AC leakage current caused by a ground fault.
    Type: Application
    Filed: November 15, 2012
    Publication date: May 15, 2014
    Applicant: Ford Global Technologies, LLC
    Inventors: Yuqing Tang, Hongjie Wu
  • Patent number: 8680795
    Abstract: An automotive electric drive system may include an electric power source, an electric machine, and a DC-DC power converter electrically connected between the electric power source and the electric machine. The DC-DC power converter may include an inductor and a first switch each disposed in a different current path connecting the electric power source and the electric machine. The currents paths may be electrically in parallel.
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: March 25, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Yuqing Tang, Hongjie Wu, William Paul Perkins
  • Publication number: 20140062349
    Abstract: A hybrid-electric vehicle and method of controlling a hybrid-vehicle is provided. The vehicle includes a traction battery, at least one electric-machine, and a controller. The controller is configured to alter a voltage between the battery and the electric-machine based on a measured voltage of the battery or the high voltage bus. In response to an indication that the measured voltage is faulty during a drive cycle, the controller instead alters the voltage between the battery and the electric machine based on a substituted battery voltage signal such that the electric-machine remains operable for the drive cycle.
    Type: Application
    Filed: November 30, 2012
    Publication date: March 6, 2014
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Rimma Isayeva, David Crist Gabriel, Michael W. Degner, Yuqing Tang, Hongjie Wu
  • Publication number: 20130141677
    Abstract: The present invention discloses a Liquid Crystal Display (LCD), a LCD substrate and a LCD manufacturing method. The boundary of the substrate, to be coated with alignment liquid, is provided with a boss or a groove which is used to prevent the alignment liquid from diffusing. Because the substrate of the LCD is provided with the boss or groove for preventing the alignment liquid from diffusing, the boss can prevent the alignment liquid from diffusing, and the groove can absorb the diffused alignment liquid. As a result, the alignment liquid is prevented from forming nonuniform boundary on the substrate with surface section difference, and the uniform boundary is formed; furthermore, the boundary of the active area of the LCD further deflects to the alignment layer, and the range of the active area is expanded. Under the action of the blockage by the boss or groove, the boss or groove can deflect to the sealant area, i.e.
    Type: Application
    Filed: December 7, 2011
    Publication date: June 6, 2013
    Inventors: Hongjie Wu, Bing-jei Liao, Hsiang-yin Shih, Cheng-chuan Chan
  • Publication number: 20120306412
    Abstract: An automotive electric drive system may include an electric power source, an electric machine, and a DC-DC power converter electrically connected between the electric power source and the electric machine. The DC-DC power converter may include an inductor and a first switch each disposed in a different current path connecting the electric power source and the electric machine. The currents paths may be electrically in parallel.
    Type: Application
    Filed: June 3, 2011
    Publication date: December 6, 2012
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Yuqing Tang, Hongjie Wu, William Paul Perkins
  • Patent number: 8284038
    Abstract: A display system for a vehicle is provided. The display system includes an information display that changes color based upon an operating state of a vehicle. The information display includes display lighting that illuminates at least a portion of the display in a color associated with the vehicle's current operating state to indicate the operating state to a driver.
    Type: Grant
    Filed: August 11, 2009
    Date of Patent: October 9, 2012
    Assignee: Ford Global Technologies, LLC
    Inventor: Hongjie Wu
  • Publication number: 20120091792
    Abstract: An apparatus for charging and discharging an electrical device in vehicle is provided. The apparatus comprises a switch, first and second power sources, and first and second contactors. The first power source is configured to provide a low voltage. The switch is configured to enable/disable the first power source. The second power source is configured to provide a high voltage for charging the electrical device. The first contactor is operably coupled to the first power source and to the second power source, the first contactor being configured to enable the second power source to provide the high voltage for charging the electrical device in response to the switch enabling the first power source. The second contactor is operably coupled to the first power source and to the second power source, the second contactor being in an open state in response to the switch enabling the first power supply.
    Type: Application
    Filed: June 29, 2011
    Publication date: April 19, 2012
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Hongjie Wu, Yuqing Tang
  • Publication number: 20110037582
    Abstract: A display system for a vehicle is provided. The display system includes an information display that changes color based upon an operating state of a vehicle. The information display includes display lighting that illuminates at least a portion of the display in a color associated with the vehicle's current operating state to indicate the operating state to a driver.
    Type: Application
    Filed: August 11, 2009
    Publication date: February 17, 2011
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventor: Hongjie Wu
  • Publication number: 20090221594
    Abstract: The invention provides a stable lyophilized composition of 5,10 methylenetetrahydrofolate suitable for use in the treatment of cancer and other therapies. The composition comprises 5,10-MTHF in combination with citric acid and ascorbic acid, with the ratio of citric acid to ascorbic acid from about 0.75:1 to about 2.25:1 by weight, and the ratio of total citric acid and ascorbic acid to 5,10-MTHF from about 1.4:1 to about 3.4:1 by weight. Prior to lyophilization, the solution is adjusted to an essentially neutral pH.
    Type: Application
    Filed: November 30, 2006
    Publication date: September 3, 2009
    Inventors: Andrew X. Chen, Hongjie Wu, Mark J. Cantwell, Joan M. Robbins
  • Patent number: 7557555
    Abstract: Measured or otherwise known operating characteristics of a DC/DC power converter are used to determine, without measuring, an operating characteristic of the DC/DC power converter.
    Type: Grant
    Filed: April 5, 2007
    Date of Patent: July 7, 2009
    Assignee: Ford Global Technologies, LLC
    Inventors: Jin Wang, Bernard Nefcy, Chingchi Chen, Michael Degner, Jeffery Scott, Lynn McCormick, Yuqing Tang, Hongjie Wu