Patents by Inventor Ho Byung CHAE

Ho Byung CHAE 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).

  • Patent number: 11605958
    Abstract: A method for preventing an inrush current of an electric vehicle charger may include the steps of determining whether there is a need for an increase or decrease in a charging current level while currently supplied to an electric vehicle to be charged; decreasing the charging current level at a predetermined ratio when it is determined that there is the need for the increase or decrease in the charging current level; checking whether an inrush current occurs for a first time; activating or deactivating at least one charging module to increase or decrease the charging current level according to the request of the electric vehicle to be charged, when the inrush current does not occur for the first time; checking whether the inrush current occurs for a second time; and increasing the charging current level by the charging current level requested by the electric vehicle to be charged, when the inrush current does not occur for the second time.
    Type: Grant
    Filed: November 29, 2021
    Date of Patent: March 14, 2023
    Assignee: SK SIGNET INC.
    Inventors: Ho Chul Hwang, Chung Youl Lee, Ho Byung Chae, Kyung Se Moon, Jae Uk Ham
  • Publication number: 20220166240
    Abstract: A method for preventing an inrush current of an electric vehicle charger may include the steps of determining whether there is a need for an increase or decrease in a charging current level while currently supplied to an electric vehicle to be charged; decreasing the charging current level at a predetermined ratio when it is determined that there is the need for the increase or decrease in the charging current level; checking whether an inrush current occurs for a first time; activating or deactivating at least one charging module to increase or decrease the charging current level according to the request of the electric vehicle to be charged, when the inrush current does not occur for the first time; checking whether the inrush current occurs for a second time; and increasing the charging current level by the charging current level requested by the electric vehicle to be charged, when the inrush current does not occur for the second time.
    Type: Application
    Filed: November 29, 2021
    Publication date: May 26, 2022
    Inventors: Ho Chul HWANG, Chung Youl LEE, Ho Byung CHAE, Kyung Se MOON, Jae Uk HAM
  • Publication number: 20220140365
    Abstract: A fuel cell electric vehicle and an electric vehicle, includes: a hydrogen tank that stores hydrogen and supplies the hydrogen to a fuel cell electric vehicle dispenser or a fuel cell stack pack; a fuel cell stack pack that operates in an electrolysis mode or a fuel cell mode; a battery pack that charges and stores DC power converted from AC power of a grid or power supplied from the fuel cell stack pack, and supplies the stored power to an electric vehicle dispenser; and a control unit that controls power transfer between the fuel cell stack pack and the battery pack and determines a driving mode of the fuel cell stack pack.
    Type: Application
    Filed: July 23, 2021
    Publication date: May 5, 2022
    Applicants: SIGNET EV INC., SIGNET ENERGY
    Inventors: Taeeun Mun, Ho Byung CHAE, Jong Hoon SHIN
  • Patent number: D969734
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: November 15, 2022
    Assignee: Signet EV Inc.
    Inventors: Taeeun Mun, Young Jun Kim, Ui Ram Kim, Hyun Ah Yang, Ho Byung Chae