Patents by Inventor Hae Sung Nam

Hae Sung Nam 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).

  • High-voltage relay system for vehicle and diagnostic method therefor
    Patent number: 11571988
    Abstract: A high-voltage relay system for a vehicle is provided. The system includes a relay, a first contact part positioned between a battery and a power converter, a voltage application unit, and a second contact part positioned between the voltage application unit and the ground. A first resistor is connected, at a first end thereof, in series to a second end of the second contact part and connected, at a second end thereof, to the ground. A controller operates the relay in response to an ON/OFF control signal to short-circuit or open the contacts at both ends of the first contact part or the contacts at both ends of the second and determines whether the relay fails based on the type of the ON/OFF control signal and the voltage value between both ends of the first resistor.
    Type: Grant
    Filed: September 10, 2019
    Date of Patent: February 7, 2023
    Assignees: Hyundai Motor Company, Kia Motors Corporation, Yura Corporation Co., Ltd.
    Inventors: Sang Ho Shin, Hae Sung Nam, Bum Kyo Jung, Ho Kyung Kim
  • HIGH-VOLTAGE RELAY SYSTEM FOR VEHICLE AND DIAGNOSTIC METHOD THEREFOR
    Publication number: 20200298725
    Abstract: A high-voltage relay system for a vehicle is provided. The system includes a relay, a first contact part positioned between a battery and a power converter, a voltage application unit, and a second contact part positioned between the voltage application unit and the ground. A first resistor is connected, at a first end thereof, in series to a second end of the second contact part and connected, at a second end thereof, to the ground. A controller operates the relay in response to an ON/OFF control signal to short-circuit or open the contacts at both ends of the first contact part or the contacts at both ends of the second and determines whether the relay fails based on the type of the ON/OFF control signal and the voltage value between both ends of the first resistor.
    Type: Application
    Filed: September 10, 2019
    Publication date: September 24, 2020
    Inventors: Sang Ho Shin, Hae Sung Nam, Bum Kyo Jung, Ho Kyung Kim