Patents by Inventor Lan Dang HUNG

Lan Dang HUNG 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).

  • Electrical system and method for diagnosing the functionality of power relays in an electrical system
    Patent number: 11073559
    Abstract: An electrical system comprises at least one high-voltage battery, at least one DC link capacitor and at least two power relays, whereby one power relay is arranged between a positive connector of the high-voltage battery and the DC link capacitor, while the other power relay is arranged between a negative connector of the high-voltage battery and the DC link capacitor, whereby the electrical system has a galvanically isolated DC/DC converter that is connected to a voltage source in the electrical system, whereby the DC/DC converter is configured such that it can transmit electric energy to a high-voltage side with the DC link capacitor in order to pre-charge the DC link capacitor, whereby the electrical system has a diagnostic device to test the power relays, whereby the diagnostic device has switchable voltage sensors.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: July 27, 2021
    Assignee: VOLKSWAGEN AKTIENGESELLSCHAFT
    Inventors: Jens Uwe Müller, Lan Dang Hung, Markus Stolz, Hendrik Gerth
  • ELECTRICAL SYSTEM AND METHOD FOR DIAGNOSING THE FUNCTIONALITY OF POWER RELAYS IN AN ELECTRICAL SYSTEM
    Publication number: 20190187211
    Abstract: An electrical system comprises at least one high-voltage battery, at least one DC link capacitor and at least two power relays, whereby one power relay is arranged between a positive connector of the high-voltage battery and the DC link capacitor, while the other power relay is arranged between a negative connector of the high-voltage battery and the DC link capacitor, whereby the electrical system has a galvanically isolated DC/DC converter that is connected to a voltage source in the electrical system, whereby the DC/DC converter is configured such that it can transmit electric energy to a high-voltage side with the DC link capacitor in order to pre-charge the DC link capacitor, whereby the electrical system has a diagnostic device to test the power relays, whereby the diagnostic device has switchable voltage sensors, whereby one voltage sensor is arranged in parallel to the high-voltage battery, one voltage sensor is arranged in parallel to the DC link capacitor, in each case, one voltage sensor is arrange
    Type: Application
    Filed: December 19, 2018
    Publication date: June 20, 2019
    Applicant: Volkswagen Aktiengesellschaft
    Inventors: Jens Uwe MÜLLER, Lan Dang HUNG, Markus STOLZ, Hendrik GERTH