Patents by Inventor Lihua GE

Lihua GE 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).

  • Automotive high voltage rectifier circuit
    Patent number: 11996776
    Abstract: A power system includes a DC/AC converter, a traction battery, an AC/DC converter electrically connected between the DC/AC converter and traction battery, and a transformer electrically connected between the DC/AC converter and AC/DC converter. The AC/DC converter includes a plurality of semiconductor devices and a plurality of capacitors such that during power transfer from the DC/AC converter to the traction battery, a voltage across each of the capacitors is half of a battery voltage.
    Type: Grant
    Filed: January 7, 2022
    Date of Patent: May 28, 2024
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Yantao Song, Baoming Ge, Lihua Chen, Serdar Hakki Yonak
  • Dual traction battery power system with charge balancing circuitry
    Patent number: 11981231
    Abstract: A power system includes an inverter, a pair of traction batteries electrically in series, and collectively in parallel with the inverter, a plurality of switches electrically in series, and collectively electrically in parallel with the traction batteries and inverter such that the switches are connected between the traction batteries and inverter, and one or more controllers programmed to operate the switches during charge of one of the traction batteries or operation of the inverter to balance states of charge of the traction batteries.
    Type: Grant
    Filed: August 18, 2022
    Date of Patent: May 14, 2024
    Assignee: Ford Global Technologies, LLC
    Inventors: Lihua Chen, Boris Curuvija, Baoming Ge
  • Variable voltage inductor with direct liquid cooling
    Patent number: 11972888
    Abstract: An inductor for a converter of an electric machine includes a core defining a channel configured to receive transmission fluid on an outer surface of the core. Coils made of windings are wrapped on the core. The windings enclose an open side of the channel to define an oil flow passage, wherein oil flowing through the oil flow passage is in direct contact with both the windings and the core to absorb heat from the windings and the core.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: April 30, 2024
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Moon Young Lee, Baoming Ge, Fan Wang, Lihua Chen
  • AUTOMOTIVE VARIABLE VOLTAGE CONVERTER WITH MULTIPLE SETS OF POWER SWITCHES
    Publication number: 20240106345
    Abstract: A variable voltage converter includes a pair of series connected switches, a series connected switch and inductor, and a capacitor having a terminal sharing a node with adjacent terminals of the series connected switches and another terminal sharing a node with adjacent terminals of the series connected switch and inductor such that during operation, a voltage input to the variable voltage converter and a voltage across the capacitor are same and less than a voltage output by the variable voltage converter.
    Type: Application
    Filed: September 23, 2022
    Publication date: March 28, 2024
    Inventors: Baoming Ge, Lihua Chen, Serdar Hakki Yonak
  • AUTOMOTIVE ELECTRIC DRIVE WITH THREE PHASE COUPLED INVERTER
    Publication number: 20240100959
    Abstract: A vehicle power system includes an inverter electrically connected between a traction battery and electric machine, a three phase coupled inductor electrically connected between the traction battery and inverter, and one or more controllers that operate the inverter while a common mode voltage at a neutral point of the electric machine is constant.
    Type: Application
    Filed: September 23, 2022
    Publication date: March 28, 2024
    Inventors: Baoming Ge, Lihua Chen, Serdar Hakki Yonak
  • MAGNETIC ELEMENT, METAL ANNULAR WINDING AND METHOD FOR MANUFACTURING THE SAME
    Publication number: 20190139697
    Abstract: The present invention discloses a magnetic element, a metal annular winding and a method of manufacturing the same. The metal annular winding includes a first flat plate portion, a winding support portion and a through hole. The winding support portion is disposed on the first flat plate portion; the through hole is formed in the middle of each of the first flat plate portion and the winding support portion; both the first flat plate portion and the winding support portion enclose the through hole in a ring shape.
    Type: Application
    Filed: October 31, 2018
    Publication date: May 9, 2019
    Inventors: Zengyi LU, Lihua GE, Tianding HONG